E: kraxel@suse.de
D: video4linux, bttv, vesafb, some scsi, misc fixes
+N: Hans J. Koch
+D: USERSPACE I/O, MAX6650
+D: Hans passed away in June 2016, and will be greatly missed.
+W: https://lwn.net/Articles/691000/
+
N: Harald Koenig
E: koenig@tat.physik.uni-tuebingen.de
D: XFree86 (S3), DCF77, some kernel hacks and fixes
What: /sys/class/mic/mic(x)/heartbeat_enable
Date: March 2015
-KernelVersion: 3.20
+KernelVersion: 4.4
Contact: Ashutosh Dixit <ashutosh.dixit@intel.com>
Description:
The MIC drivers detect and inform user space about card crashes
+++ /dev/null
-What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input
-Date: June 2010
-Contact: Christoph Mair <christoph.mair@gmail.com>
-Description: Start a pressure measurement and read the result. Values
- represent the ambient air pressure in pascal (0.01 millibar).
-
- Reading: returns the current air pressure.
-
-
-What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input
-Date: June 2010
-Contact: Christoph Mair <christoph.mair@gmail.com>
-Description: Measure the ambient temperature. The returned value represents
- the ambient temperature in units of 0.1 degree celsius.
-
- Reading: returns the current temperature.
-
-
-What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling
-Date: June 2010
-Contact: Christoph Mair <christoph.mair@gmail.com>
-Description: Tell the bmp085 to use more samples to calculate a pressure
- value. When writing to this file the chip will use 2^x samples
- to calculate the next pressure value with x being the value
- written. Using this feature will decrease RMS noise and
- increase the measurement time.
-
- Reading: returns the current oversampling setting.
-
- Writing: sets a new oversampling setting.
- Accepted values: 0..3.
= Rockchip eFuse device tree bindings =
Required properties:
-- compatible: Should be "rockchip,rockchip-efuse"
+- compatible: Should be one of the following.
+ - "rockchip,rk3066a-efuse" - for RK3066a SoCs.
+ - "rockchip,rk3188-efuse" - for RK3188 SoCs.
+ - "rockchip,rk3288-efuse" - for RK3288 SoCs.
+ - "rockchip,rk3399-efuse" - for RK3399 SoCs.
- reg: Should contain the registers location and exact eFuse size
- clocks: Should be the clock id of eFuse
- clock-names: Should be "pclk_efuse"
+Deprecated properties:
+- compatible: "rockchip,rockchip-efuse"
+ Old efuse compatible value compatible to rk3066a, rk3188 and rk3288
+ efuses
+
= Data cells =
Are child nodes of eFuse, bindings of which as described in
bindings/nvmem/nvmem.txt
Example:
efuse: efuse@ffb40000 {
- compatible = "rockchip,rockchip-efuse";
+ compatible = "rockchip,rk3288-efuse";
reg = <0xffb40000 0x20>;
#address-cells = <1>;
#size-cells = <1>;
with the VME subsystem, typically called from the devices init routine. This is
achieved via a call to the following function:
- int vme_register_driver (struct vme_driver *driver);
+ int vme_register_driver (struct vme_driver *driver, unsigned int ndevs);
If driver registration is successful this function returns zero, if an error
occurred a negative error code will be returned.
A pointer to a structure of type 'vme_driver' must be provided to the
-registration function. The structure is as follows:
+registration function. Along with ndevs, which is the number of devices your
+driver is able to support. The structure is as follows:
struct vme_driver {
struct list_head node;
should be correctly set. The '.name' element is a pointer to a string holding
the device driver's name.
-The '.match' function allows controlling the number of devices that need to
-be registered. The match function should return 1 if a device should be
+The '.match' function allows control over which VME devices should be registered
+with the driver. The match function should return 1 if a device should be
probed and 0 otherwise. This example match function (from vme_user.c) limits
the number of devices probed to one:
adjacent locations:
int vme_lm_attach(struct vme_resource *res, int num,
- void (*callback)(int));
+ void (*callback)(void *));
int vme_lm_detach(struct vme_resource *res, int num);
The callback function is declared as follows.
- void callback(int num);
+ void callback(void *data);
Slot Detection
F: drivers/hwmon/max20751.c
MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
-M: "Hans J. Koch" <hjk@hansjkoch.de>
L: linux-hwmon@vger.kernel.org
-S: Maintained
+S: Orphan
F: Documentation/hwmon/max6650
F: drivers/hwmon/max6650.c
F: fs/hppfs/
USERSPACE I/O (UIO)
-M: "Hans J. Koch" <hjk@hansjkoch.de>
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
"b.L_switcher",
&bL_switcher_fops
};
-
-static int __init bL_switcher_dummy_if_init(void)
-{
- return misc_register(&bL_switcher_device);
-}
-
-static void __exit bL_switcher_dummy_if_exit(void)
-{
- misc_deregister(&bL_switcher_device);
-}
-
-module_init(bL_switcher_dummy_if_init);
-module_exit(bL_switcher_dummy_if_exit);
+module_misc_device(bL_switcher_device);
.name = "coreb",
.fops = &coreb_fops,
};
-
-static int __init bf561_coreb_init(void)
-{
- return misc_register(&coreb_dev);
-}
-module_init(bf561_coreb_init);
-
-static void __exit bf561_coreb_exit(void)
-{
- misc_deregister(&coreb_dev);
-}
-module_exit(bf561_coreb_exit);
+module_misc_device(coreb_dev);
MODULE_AUTHOR("Bas Vermeulen <bvermeul@blackstar.xs4all.nl>");
MODULE_DESCRIPTION("BF561 Core B Support");
.name = "watchdog",
.fops = &harddog_fops,
};
-
-static char banner[] __initdata = KERN_INFO "UML Watchdog Timer\n";
-
-static int __init harddog_init(void)
-{
- int ret;
-
- ret = misc_register(&harddog_miscdev);
-
- if (ret)
- return ret;
-
- printk(banner);
-
- return 0;
-}
-
-static void __exit harddog_exit(void)
-{
- misc_deregister(&harddog_miscdev);
-}
-
-module_init(harddog_init);
-module_exit(harddog_exit);
+module_misc_device(harddog_miscdev);
.fops = &vhci_fops,
.minor = VHCI_MINOR,
};
-
-static int __init vhci_init(void)
-{
- BT_INFO("Virtual HCI driver ver %s", VERSION);
-
- return misc_register(&vhci_miscdev);
-}
-
-static void __exit vhci_exit(void)
-{
- misc_deregister(&vhci_miscdev);
-}
-
-module_init(vhci_init);
-module_exit(vhci_exit);
+module_misc_device(vhci_miscdev);
module_param(amp, bool, 0644);
MODULE_PARM_DESC(amp, "Create AMP controller device");
.name = DRIVER_NAME,
.fops = &bfin_otp_fops,
};
-
-/**
- * bfin_otp_init - Initialize module
- *
- * Registers the device and notifier handler. Actual device
- * initialization is handled by bfin_otp_open().
- */
-static int __init bfin_otp_init(void)
-{
- int ret;
-
- stampit();
-
- ret = misc_register(&bfin_otp_misc_device);
- if (ret) {
- pr_init(KERN_ERR PFX "unable to register a misc device\n");
- return ret;
- }
-
- pr_init(KERN_INFO PFX "initialized\n");
-
- return 0;
-}
-
-/**
- * bfin_otp_exit - Deinitialize module
- *
- * Unregisters the device and notifier handler. Actual device
- * deinitialization is handled by bfin_otp_close().
- */
-static void __exit bfin_otp_exit(void)
-{
- stampit();
-
- misc_deregister(&bfin_otp_misc_device);
-}
-
-module_init(bfin_otp_init);
-module_exit(bfin_otp_exit);
+module_misc_device(bfin_otp_misc_device);
MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
MODULE_DESCRIPTION("Blackfin OTP Memory Interface");
char *kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
int err = 0;
+ if (!pfn_valid(PFN_DOWN(p)))
+ return -EIO;
+
read = 0;
if (p < (unsigned long) high_memory) {
low_count = count;
char *kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */
int err = 0;
+ if (!pfn_valid(PFN_DOWN(p)))
+ return -EIO;
+
if (p < (unsigned long) high_memory) {
unsigned long to_write = min_t(unsigned long, count,
(unsigned long)high_memory - p);
MKBYTE(rSlaveControl));
rSlaveControl_Save = rSlaveControl;
- rSlaveControl.ConfigMode = TRUE;
+ rSlaveControl.ConfigMode = true;
PRINTK_2(TRACE_3780I,
"3780i::dsp3780i_WriteGenCfg entry rSlaveControl+ConfigMode %x\n",
MKBYTE(rSlaveControl) = InByteDsp(DSP_IsaSlaveControl);
rSlaveControl_Save = rSlaveControl;
- rSlaveControl.ConfigMode = TRUE;
+ rSlaveControl.ConfigMode = true;
OutByteDsp(DSP_IsaSlaveControl, MKBYTE(rSlaveControl));
OutByteDsp(DSP_ConfigAddress, (unsigned char) uIndex);
ucValue = InByteDsp(DSP_ConfigData);
rUartCfg1.BaseIO = 3;
break;
}
- rUartCfg2.Enable = TRUE;
+ rUartCfg2.Enable = true;
}
rHBridgeCfg1.Reserved = rHBridgeCfg2.Reserved = 0;
rHBridgeCfg1.IrqPulse = pSettings->bDspIrqPulse;
rHBridgeCfg1.Irq = (unsigned char) pIrqMap[pSettings->usDspIrq];
rHBridgeCfg1.AccessMode = 1;
- rHBridgeCfg2.Enable = TRUE;
+ rHBridgeCfg2.Enable = true;
rBusmasterCfg2.Reserved = 0;
* soft-reset active for 10ms.
*/
rSlaveControl.ClockControl = 0;
- rSlaveControl.SoftReset = TRUE;
- rSlaveControl.ConfigMode = FALSE;
+ rSlaveControl.SoftReset = true;
+ rSlaveControl.ConfigMode = false;
rSlaveControl.Reserved = 0;
PRINTK_4(TRACE_3780I,
for (i = 0; i < 11; i++)
udelay(2000);
- rSlaveControl.SoftReset = FALSE;
+ rSlaveControl.SoftReset = false;
OutWordDsp(DSP_IsaSlaveControl, MKWORD(rSlaveControl));
MKWORD(tval) = InWordDsp(DSP_IsaSlaveControl);
}
- rHBridgeControl.EnableDspInt = FALSE;
- rHBridgeControl.MemAutoInc = TRUE;
- rHBridgeControl.IoAutoInc = FALSE;
- rHBridgeControl.DiagnosticMode = FALSE;
+ rHBridgeControl.EnableDspInt = false;
+ rHBridgeControl.MemAutoInc = true;
+ rHBridgeControl.IoAutoInc = false;
+ rHBridgeControl.DiagnosticMode = false;
PRINTK_3(TRACE_3780I,
"3780i::dsp3780i_EnableDSP DSP_HBridgeControl %x rHBridgeControl %x\n",
ChipID = ReadMsaCfg(DSP_ChipID);
PRINTK_2(TRACE_3780I,
- "3780i::dsp3780I_EnableDSP exiting bRC=TRUE, ChipID %x\n",
+ "3780i::dsp3780I_EnableDSP exiting bRC=true, ChipID %x\n",
ChipID);
return 0;
PRINTK_1(TRACE_3780I, "3780i::dsp3780i_DisableDSP entry\n");
rSlaveControl.ClockControl = 0;
- rSlaveControl.SoftReset = TRUE;
- rSlaveControl.ConfigMode = FALSE;
+ rSlaveControl.SoftReset = true;
+ rSlaveControl.ConfigMode = false;
rSlaveControl.Reserved = 0;
spin_lock_irqsave(&dsp_lock, flags);
OutWordDsp(DSP_IsaSlaveControl, MKWORD(rSlaveControl));
PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Reset rHBridgeControl %x\n",
MKWORD(rHBridgeControl));
- rHBridgeControl.EnableDspInt = FALSE;
+ rHBridgeControl.EnableDspInt = false;
OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl));
spin_unlock_irqrestore(&dsp_lock, flags);
/* Reset the core via the boot domain register */
- rBootDomain.ResetCore = TRUE;
- rBootDomain.Halt = TRUE;
- rBootDomain.NMI = TRUE;
+ rBootDomain.ResetCore = true;
+ rBootDomain.Halt = true;
+ rBootDomain.NMI = true;
rBootDomain.Reserved = 0;
PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Reset rBootDomain %x\n",
/* Transition the core to a running state */
- rBootDomain.ResetCore = TRUE;
- rBootDomain.Halt = FALSE;
- rBootDomain.NMI = TRUE;
+ rBootDomain.ResetCore = true;
+ rBootDomain.Halt = false;
+ rBootDomain.NMI = true;
rBootDomain.Reserved = 0;
WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain));
udelay(5);
- rBootDomain.ResetCore = FALSE;
+ rBootDomain.ResetCore = false;
WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain));
udelay(5);
- rBootDomain.NMI = FALSE;
+ rBootDomain.NMI = false;
WriteMsaCfg(DSP_MspBootDomain, MKWORD(rBootDomain));
udelay(5);
/* Enable DSP to PC interrupt */
spin_lock_irqsave(&dsp_lock, flags);
MKWORD(rHBridgeControl) = InWordDsp(DSP_HBridgeControl);
- rHBridgeControl.EnableDspInt = TRUE;
+ rHBridgeControl.EnableDspInt = true;
PRINTK_2(TRACE_3780I, "3780i::dsp3780i_Run rHBridgeControl %x\n",
MKWORD(rHBridgeControl));
spin_unlock_irqrestore(&dsp_lock, flags);
- PRINTK_1(TRACE_3780I, "3780i::dsp3780i_Run exit bRC=TRUE\n");
+ PRINTK_1(TRACE_3780I, "3780i::dsp3780i_Run exit bRC=true\n");
return 0;
}
PRINTK_1(TRACE_3780I,
- "3780I::dsp3780I_ReadDStore exit bRC=TRUE\n");
+ "3780I::dsp3780I_ReadDStore exit bRC=true\n");
return 0;
}
PRINTK_1(TRACE_3780I,
- "3780I::dsp3780I_ReadAndClearDStore exit bRC=TRUE\n");
+ "3780I::dsp3780I_ReadAndClearDStore exit bRC=true\n");
return 0;
}
PRINTK_1(TRACE_3780I,
- "3780I::dsp3780D_WriteDStore exit bRC=TRUE\n");
+ "3780I::dsp3780D_WriteDStore exit bRC=true\n");
return 0;
}
}
PRINTK_1(TRACE_3780I,
- "3780I::dsp3780I_ReadIStore exit bRC=TRUE\n");
+ "3780I::dsp3780I_ReadIStore exit bRC=true\n");
return 0;
}
}
PRINTK_1(TRACE_3780I,
- "3780I::dsp3780I_WriteIStore exit bRC=TRUE\n");
+ "3780I::dsp3780I_WriteIStore exit bRC=true\n");
return 0;
}
*/
spin_lock_irqsave(&dsp_lock, flags);
MKWORD(rHBridgeControl) = InWordDsp(DSP_HBridgeControl);
- rHBridgeControl.EnableDspInt = FALSE;
+ rHBridgeControl.EnableDspInt = false;
OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl));
*pusIPCSource = InWordDsp(DSP_Interrupt);
OutWordDsp(DSP_Interrupt, (unsigned short) ~(*pusIPCSource));
- rHBridgeControl.EnableDspInt = TRUE;
+ rHBridgeControl.EnableDspInt = true;
OutWordDsp(DSP_HBridgeControl, MKWORD(rHBridgeControl));
spin_unlock_irqrestore(&dsp_lock, flags);
} DSP_UART_CFG_1;
typedef struct {
- unsigned char Enable:1; /* RW: Enable I/O and IRQ: 0=FALSE, 1=TRUE */
+ unsigned char Enable:1; /* RW: Enable I/O and IRQ: 0=false, 1=true */
unsigned char Reserved:7; /* 0: Reserved */
} DSP_UART_CFG_2;
} DSP_HBRIDGE_CFG_1;
typedef struct {
- unsigned char Enable:1; /* RW: enable I/O and IRQ: 0=FALSE, 1=TRUE */
+ unsigned char Enable:1; /* RW: enable I/O and IRQ: 0=false, 1=true */
unsigned char Reserved:7; /* 0: Reserved */
} DSP_HBRIDGE_CFG_2;
typedef struct {
- unsigned char GateIOCHRDY:1; /* RW: Enable IOCHRDY gating: 0=FALSE, 1=TRUE */
+ unsigned char GateIOCHRDY:1; /* RW: Enable IOCHRDY gating: 0=false, 1=true */
unsigned char Reserved:7; /* 0: Reserved */
} DSP_ISA_PROT_CFG;
typedef struct {
- unsigned char Enable:1; /* RW: Enable low power suspend/resume 0=FALSE, 1=TRUE */
+ unsigned char Enable:1; /* RW: Enable low power suspend/resume 0=false, 1=true */
unsigned char Reserved:7; /* 0: Reserved */
} DSP_POWER_MGMT_CFG;
pDrvData->IPCs[ipcnum].usIntCount);
mutex_lock(&mwave_mutex);
- pDrvData->IPCs[ipcnum].bIsHere = FALSE;
- pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
+ pDrvData->IPCs[ipcnum].bIsHere = false;
+ pDrvData->IPCs[ipcnum].bIsEnabled = true;
mutex_unlock(&mwave_mutex);
PRINTK_2(TRACE_MWAVE,
pDrvData->IPCs[ipcnum].usIntCount);
mutex_lock(&mwave_mutex);
- if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
+ if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
DECLARE_WAITQUEUE(wait, current);
PRINTK_2(TRACE_MWAVE,
" ipc %x going to sleep\n",
ipcnum);
add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
- pDrvData->IPCs[ipcnum].bIsHere = TRUE;
+ pDrvData->IPCs[ipcnum].bIsHere = true;
set_current_state(TASK_INTERRUPTIBLE);
/* check whether an event was signalled by */
/* the interrupt handler while we were gone */
" application\n",
ipcnum);
}
- pDrvData->IPCs[ipcnum].bIsHere = FALSE;
+ pDrvData->IPCs[ipcnum].bIsHere = false;
remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
set_current_state(TASK_RUNNING);
PRINTK_2(TRACE_MWAVE,
return -EINVAL;
}
mutex_lock(&mwave_mutex);
- if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
- pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
- if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
+ if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
+ pDrvData->IPCs[ipcnum].bIsEnabled = false;
+ if (pDrvData->IPCs[ipcnum].bIsHere == true) {
wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
}
}
if (pDrvData->device_registered) {
device_unregister(&mwave_device);
- pDrvData->device_registered = FALSE;
+ pDrvData->device_registered = false;
}
#endif
memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
- pDrvData->bBDInitialized = FALSE;
- pDrvData->bResourcesClaimed = FALSE;
- pDrvData->bDSPEnabled = FALSE;
- pDrvData->bDSPReset = FALSE;
- pDrvData->bMwaveDevRegistered = FALSE;
+ pDrvData->bBDInitialized = false;
+ pDrvData->bResourcesClaimed = false;
+ pDrvData->bDSPEnabled = false;
+ pDrvData->bDSPReset = false;
+ pDrvData->bMwaveDevRegistered = false;
pDrvData->sLine = -1;
for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
- pDrvData->IPCs[i].bIsEnabled = FALSE;
- pDrvData->IPCs[i].bIsHere = FALSE;
+ pDrvData->IPCs[i].bIsEnabled = false;
+ pDrvData->IPCs[i].bIsHere = false;
pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
}
" Failed to initialize board data\n");
goto cleanup_error;
}
- pDrvData->bBDInitialized = TRUE;
+ pDrvData->bBDInitialized = true;
retval = tp3780I_CalcResources(&pDrvData->rBDData);
PRINTK_2(TRACE_MWAVE,
" Failed to claim resources\n");
goto cleanup_error;
}
- pDrvData->bResourcesClaimed = TRUE;
+ pDrvData->bResourcesClaimed = true;
retval = tp3780I_EnableDSP(&pDrvData->rBDData);
PRINTK_2(TRACE_MWAVE,
" Failed to enable DSP\n");
goto cleanup_error;
}
- pDrvData->bDSPEnabled = TRUE;
+ pDrvData->bDSPEnabled = true;
if (misc_register(&mwave_misc_dev) < 0) {
PRINTK_ERROR(KERN_ERR_MWAVE
" Failed to register misc device\n");
goto cleanup_error;
}
- pDrvData->bMwaveDevRegistered = TRUE;
+ pDrvData->bMwaveDevRegistered = true;
pDrvData->sLine = register_serial_portandirq(
pDrvData->rBDData.rDspSettings.usUartBaseIO,
if (device_register(&mwave_device))
goto cleanup_error;
- pDrvData->device_registered = TRUE;
+ pDrvData->device_registered = true;
for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
PRINTK_ERROR(KERN_ERR_MWAVE
typedef struct _MWAVE_IPC {
unsigned short usIntCount; /* 0=none, 1=first, 2=greater than 1st */
- BOOLEAN bIsEnabled;
- BOOLEAN bIsHere;
+ bool bIsEnabled;
+ bool bIsHere;
/* entry spin lock */
wait_queue_head_t ipc_wait_queue;
} MWAVE_IPC;
THINKPAD_BD_DATA rBDData; /* board driver's data area */
unsigned long ulIPCSource_ISR; /* IPC source bits for recently processed intr, set during ISR processing */
unsigned long ulIPCSource_DPC; /* IPC source bits for recently processed intr, set during DPC processing */
- BOOLEAN bBDInitialized;
- BOOLEAN bResourcesClaimed;
- BOOLEAN bDSPEnabled;
- BOOLEAN bDSPReset;
+ bool bBDInitialized;
+ bool bResourcesClaimed;
+ bool bDSPEnabled;
+ bool bDSPReset;
MWAVE_IPC IPCs[16];
- BOOLEAN bMwaveDevRegistered;
+ bool bMwaveDevRegistered;
short sLine;
int nr_registered_attrs;
int device_registered;
}
-int smapi_set_DSP_power_state(BOOLEAN bOn)
+int smapi_set_DSP_power_state(bool bOn)
{
int bRC = -EIO;
unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
PRINTK_ERROR("smapi::smapi_init, ERROR unable to read from SMAPI port\n");
} else {
PRINTK_2(TRACE_SMAPI,
- "smapi::smapi_init, exit TRUE g_usSmapiPort %x\n",
+ "smapi::smapi_init, exit true g_usSmapiPort %x\n",
g_usSmapiPort);
retval = 0;
//SmapiQuerySystemID();
#ifndef _LINUX_SMAPI_H
#define _LINUX_SMAPI_H
-#define TRUE 1
-#define FALSE 0
-#define BOOLEAN int
-
typedef struct {
int bDSPPresent;
int bDSPEnabled;
int smapi_init(void);
int smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings);
int smapi_set_DSP_cfg(void);
-int smapi_set_DSP_power_state(BOOLEAN bOn);
+int smapi_set_DSP_power_state(bool bOn);
#endif
WriteMsaCfg(DSP_GpioModeControl_15_8, MKWORD(rGpioMode));
MKWORD(rGpioDriverEnable) = 0;
- rGpioDriverEnable.Enable10 = TRUE;
- rGpioDriverEnable.Mask10 = TRUE;
+ rGpioDriverEnable.Enable10 = true;
+ rGpioDriverEnable.Mask10 = true;
WriteMsaCfg(DSP_GpioDriverEnable_15_8, MKWORD(rGpioDriverEnable));
MKWORD(rGpioOutputData) = 0;
rGpioOutputData.Latch10 = 0;
- rGpioOutputData.Mask10 = TRUE;
+ rGpioOutputData.Mask10 = true;
WriteMsaCfg(DSP_GpioOutputData_15_8, MKWORD(rGpioOutputData));
PRINTK_1(TRACE_TP3780I, "tp3780i::EnableSRAM exit\n");
PRINTK_2(TRACE_TP3780I,
"tp3780i::DspInterrupt usIntCount %x\n",
pDrvData->IPCs[usPCNum - 1].usIntCount);
- if (pDrvData->IPCs[usPCNum - 1].bIsEnabled == TRUE) {
+ if (pDrvData->IPCs[usPCNum - 1].bIsEnabled == true) {
PRINTK_2(TRACE_TP3780I,
"tp3780i::DspInterrupt, waking up usPCNum %x\n",
usPCNum - 1);
PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_InitializeBoardData entry pBDData %p\n", pBDData);
- pBDData->bDSPEnabled = FALSE;
- pSettings->bInterruptClaimed = FALSE;
+ pBDData->bDSPEnabled = false;
+ pSettings->bInterruptClaimed = false;
retval = smapi_init();
if (retval) {
if (pSettings->bInterruptClaimed) {
free_irq(pSettings->usDspIrq, NULL);
- pSettings->bInterruptClaimed = FALSE;
+ pSettings->bInterruptClaimed = false;
}
PRINTK_2(TRACE_TP3780I,
int tp3780I_EnableDSP(THINKPAD_BD_DATA * pBDData)
{
DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings;
- BOOLEAN bDSPPoweredUp = FALSE, bInterruptAllocated = FALSE;
+ bool bDSPPoweredUp = false, bInterruptAllocated = false;
PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_EnableDSP entry pBDData %p\n", pBDData);
}
}
- pSettings->bDspIrqActiveLow = pSettings->bDspIrqPulse = TRUE;
- pSettings->bUartIrqActiveLow = pSettings->bUartIrqPulse = TRUE;
+ pSettings->bDspIrqActiveLow = pSettings->bDspIrqPulse = true;
+ pSettings->bUartIrqActiveLow = pSettings->bUartIrqPulse = true;
if (pBDData->bShareDspIrq) {
- pSettings->bDspIrqActiveLow = FALSE;
+ pSettings->bDspIrqActiveLow = false;
}
if (pBDData->bShareUartIrq) {
- pSettings->bUartIrqActiveLow = FALSE;
+ pSettings->bUartIrqActiveLow = false;
}
pSettings->usNumTransfers = TP_CFG_NumTransfers;
PRINTK_3(TRACE_TP3780I,
"tp3780i::tp3780I_EnableDSP, got interrupt %x bShareDspIrq %x\n",
pSettings->usDspIrq, pBDData->bShareDspIrq);
- bInterruptAllocated = TRUE;
- pSettings->bInterruptClaimed = TRUE;
+ bInterruptAllocated = true;
+ pSettings->bInterruptClaimed = true;
}
- smapi_set_DSP_power_state(FALSE);
- if (smapi_set_DSP_power_state(TRUE)) {
- PRINTK_ERROR(KERN_ERR_MWAVE "tp3780i::tp3780I_EnableDSP: Error: smapi_set_DSP_power_state(TRUE) failed\n");
+ smapi_set_DSP_power_state(false);
+ if (smapi_set_DSP_power_state(true)) {
+ PRINTK_ERROR(KERN_ERR_MWAVE "tp3780i::tp3780I_EnableDSP: Error: smapi_set_DSP_power_state(true) failed\n");
goto exit_cleanup;
} else {
- bDSPPoweredUp = TRUE;
+ bDSPPoweredUp = true;
}
if (dsp3780I_EnableDSP(pSettings, s_ausThinkpadIrqToField, s_ausThinkpadDmaToField)) {
EnableSRAM(pBDData);
- pBDData->bDSPEnabled = TRUE;
+ pBDData->bDSPEnabled = true;
PRINTK_1(TRACE_TP3780I, "tp3780i::tp3780I_EnableDSP exit\n");
exit_cleanup:
PRINTK_ERROR("tp3780i::tp3780I_EnableDSP: Cleaning up\n");
if (bDSPPoweredUp)
- smapi_set_DSP_power_state(FALSE);
+ smapi_set_DSP_power_state(false);
if (bInterruptAllocated) {
free_irq(pSettings->usDspIrq, NULL);
- pSettings->bInterruptClaimed = FALSE;
+ pSettings->bInterruptClaimed = false;
}
return -EIO;
}
dsp3780I_DisableDSP(&pBDData->rDspSettings);
if (pSettings->bInterruptClaimed) {
free_irq(pSettings->usDspIrq, NULL);
- pSettings->bInterruptClaimed = FALSE;
+ pSettings->bInterruptClaimed = false;
}
- smapi_set_DSP_power_state(FALSE);
- pBDData->bDSPEnabled = FALSE;
+ smapi_set_DSP_power_state(false);
+ pBDData->bDSPEnabled = false;
}
PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_DisableDSP exit retval %x\n", retval);
int retval = 0;
DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings;
unsigned short usDspBaseIO = pSettings->usDspBaseIO;
- BOOLEAN bRC = 0;
+ bool bRC = 0;
PRINTK_6(TRACE_TP3780I,
"tp3780i::tp3780I_ReadWriteDspDStore entry pBDData %p, uOpcode %x, pvBuffer %p, uCount %x, ulDSPAddr %lx\n",
int retval = 0;
DSP_3780I_CONFIG_SETTINGS *pSettings = &pBDData->rDspSettings;
unsigned short usDspBaseIO = pSettings->usDspBaseIO;
- BOOLEAN bRC = 0;
+ bool bRC = 0;
PRINTK_6(TRACE_TP3780I,
"tp3780i::tp3780I_ReadWriteDspIStore entry pBDData %p, uOpcode %x, pvBuffer %p, uCount %x, ulDSPAddr %lx\n",
struct parport *port;
struct pardevice *pdev = NULL;
char *name;
- int fl;
+ struct pardev_cb ppdev_cb;
name = kasprintf(GFP_KERNEL, CHRDEV "%x", minor);
if (name == NULL)
return -ENXIO;
}
- fl = (pp->flags & PP_EXCL) ? PARPORT_FLAG_EXCL : 0;
- pdev = parport_register_device(port, name, NULL,
- NULL, pp_irq, fl, pp);
+ memset(&ppdev_cb, 0, sizeof(ppdev_cb));
+ ppdev_cb.irq_func = pp_irq;
+ ppdev_cb.flags = (pp->flags & PP_EXCL) ? PARPORT_FLAG_EXCL : 0;
+ ppdev_cb.private = pp;
+ pdev = parport_register_dev_model(port, name, &ppdev_cb, minor);
parport_put_port(port);
if (!pdev) {
device_destroy(ppdev_class, MKDEV(PP_MAJOR, port->number));
}
+static int pp_probe(struct pardevice *par_dev)
+{
+ struct device_driver *drv = par_dev->dev.driver;
+ int len = strlen(drv->name);
+
+ if (strncmp(par_dev->name, drv->name, len))
+ return -ENODEV;
+
+ return 0;
+}
+
static struct parport_driver pp_driver = {
.name = CHRDEV,
- .attach = pp_attach,
+ .probe = pp_probe,
+ .match_port = pp_attach,
.detach = pp_detach,
+ .devmodel = true,
};
static int __init ppdev_init(void)
event_nasid = ia64_sn_get_console_nasid();
+ snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
+ if (IS_ERR(snsc_class)) {
+ printk("%s: failed to allocate class\n", __func__);
+ return PTR_ERR(snsc_class);
+ }
+
if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
SYSCTL_BASENAME) < 0) {
printk("%s: failed to register SN system controller device\n",
__func__);
return -ENODEV;
}
- snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
for (cnode = 0; cnode < num_cnodes; cnode++) {
geoid = cnodeid_get_geoid(cnode);
version = channel->wr_buffers[0]->addr;
- /* Check version number. Accept anything below 0x82 for now. */
+ /* Check version number. Reject anything above 0x82. */
if (*version > 0x82) {
dev_err(endpoint->dev,
- "No support for IDT version 0x%02x. Maybe the xillybus driver needs an upgarde. Aborting.\n",
+ "No support for IDT version 0x%02x. Maybe the xillybus driver needs an upgrade. Aborting.\n",
*version);
return -ENODEV;
}
config FPGA_MGR_ZYNQ_FPGA
tristate "Xilinx Zynq FPGA"
+ depends on ARCH_ZYNQ || COMPILE_TEST
depends on HAS_DMA
help
FPGA manager driver support for Xilinx Zynq FPGAs.
.minor = UHID_MINOR,
.name = UHID_NAME,
};
+module_misc_device(uhid_misc);
-static int __init uhid_init(void)
-{
- return misc_register(&uhid_misc);
-}
-
-static void __exit uhid_exit(void)
-{
- misc_deregister(&uhid_misc);
-}
-
-module_init(uhid_init);
-module_exit(uhid_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
MODULE_DESCRIPTION("User-space I/O driver support for HID subsystem");
{
struct hv_monitor_page *monitorpage;
- if (channel->offermsg.monitor_allocated) {
+ /*
+ * For channels marked as in "low latency" mode
+ * bypass the monitor page mechanism.
+ */
+ if ((channel->offermsg.monitor_allocated) &&
+ (!channel->low_latency)) {
/* Each u32 represents 32 channels */
sync_set_bit(channel->offermsg.child_relid & 31,
(unsigned long *) vmbus_connection.send_int_page +
{
struct vmbus_channel_open_channel *open_msg;
struct vmbus_channel_msginfo *open_info = NULL;
- void *in, *out;
unsigned long flags;
int ret, err = 0;
- unsigned long t;
struct page *page;
+ if (send_ringbuffer_size % PAGE_SIZE ||
+ recv_ringbuffer_size % PAGE_SIZE)
+ return -EINVAL;
+
spin_lock_irqsave(&newchannel->lock, flags);
if (newchannel->state == CHANNEL_OPEN_STATE) {
newchannel->state = CHANNEL_OPENING_STATE;
recv_ringbuffer_size));
if (!page)
- out = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
- get_order(send_ringbuffer_size +
- recv_ringbuffer_size));
- else
- out = (void *)page_address(page);
+ page = alloc_pages(GFP_KERNEL|__GFP_ZERO,
+ get_order(send_ringbuffer_size +
+ recv_ringbuffer_size));
- if (!out) {
+ if (!page) {
err = -ENOMEM;
- goto error0;
+ goto error_set_chnstate;
}
- in = (void *)((unsigned long)out + send_ringbuffer_size);
-
- newchannel->ringbuffer_pages = out;
+ newchannel->ringbuffer_pages = page_address(page);
newchannel->ringbuffer_pagecount = (send_ringbuffer_size +
recv_ringbuffer_size) >> PAGE_SHIFT;
- ret = hv_ringbuffer_init(
- &newchannel->outbound, out, send_ringbuffer_size);
+ ret = hv_ringbuffer_init(&newchannel->outbound, page,
+ send_ringbuffer_size >> PAGE_SHIFT);
if (ret != 0) {
err = ret;
- goto error0;
+ goto error_free_pages;
}
- ret = hv_ringbuffer_init(
- &newchannel->inbound, in, recv_ringbuffer_size);
+ ret = hv_ringbuffer_init(&newchannel->inbound,
+ &page[send_ringbuffer_size >> PAGE_SHIFT],
+ recv_ringbuffer_size >> PAGE_SHIFT);
if (ret != 0) {
err = ret;
- goto error0;
+ goto error_free_pages;
}
newchannel->ringbuffer_gpadlhandle = 0;
ret = vmbus_establish_gpadl(newchannel,
- newchannel->outbound.ring_buffer,
- send_ringbuffer_size +
- recv_ringbuffer_size,
- &newchannel->ringbuffer_gpadlhandle);
+ page_address(page),
+ send_ringbuffer_size +
+ recv_ringbuffer_size,
+ &newchannel->ringbuffer_gpadlhandle);
if (ret != 0) {
err = ret;
- goto error0;
+ goto error_free_pages;
}
/* Create and init the channel open message */
GFP_KERNEL);
if (!open_info) {
err = -ENOMEM;
- goto error_gpadl;
+ goto error_free_gpadl;
}
init_completion(&open_info->waitevent);
if (userdatalen > MAX_USER_DEFINED_BYTES) {
err = -EINVAL;
- goto error_gpadl;
+ goto error_free_gpadl;
}
if (userdatalen)
if (ret != 0) {
err = ret;
- goto error1;
+ goto error_clean_msglist;
}
- t = wait_for_completion_timeout(&open_info->waitevent, 5*HZ);
- if (t == 0) {
- err = -ETIMEDOUT;
- goto error1;
- }
+ wait_for_completion(&open_info->waitevent);
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&open_info->msglistentry);
if (open_info->response.open_result.status) {
err = -EAGAIN;
- goto error_gpadl;
+ goto error_free_gpadl;
}
newchannel->state = CHANNEL_OPENED_STATE;
kfree(open_info);
return 0;
-error1:
+error_clean_msglist:
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&open_info->msglistentry);
spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
-error_gpadl:
+error_free_gpadl:
vmbus_teardown_gpadl(newchannel, newchannel->ringbuffer_gpadlhandle);
-
-error0:
- free_pages((unsigned long)out,
- get_order(send_ringbuffer_size + recv_ringbuffer_size));
kfree(open_info);
+error_free_pages:
+ hv_ringbuffer_cleanup(&newchannel->outbound);
+ hv_ringbuffer_cleanup(&newchannel->inbound);
+ __free_pages(page,
+ get_order(send_ringbuffer_size + recv_ringbuffer_size));
+error_set_chnstate:
newchannel->state = CHANNEL_OPEN_STATE;
return err;
}
* create_gpadl_header - Creates a gpadl for the specified buffer
*/
static int create_gpadl_header(void *kbuffer, u32 size,
- struct vmbus_channel_msginfo **msginfo,
- u32 *messagecount)
+ struct vmbus_channel_msginfo **msginfo)
{
int i;
int pagecount;
gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys(
kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT;
*msginfo = msgheader;
- *messagecount = 1;
pfnsum = pfncount;
pfnleft = pagecount - pfncount;
}
msgbody->msgsize = msgsize;
- (*messagecount)++;
gpadl_body =
(struct vmbus_channel_gpadl_body *)msgbody->msg;
msgheader = kzalloc(msgsize, GFP_KERNEL);
if (msgheader == NULL)
goto nomem;
+
+ INIT_LIST_HEAD(&msgheader->submsglist);
msgheader->msgsize = msgsize;
gpadl_header = (struct vmbus_channel_gpadl_header *)
kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT;
*msginfo = msgheader;
- *messagecount = 1;
}
return 0;
struct vmbus_channel_gpadl_header *gpadlmsg;
struct vmbus_channel_gpadl_body *gpadl_body;
struct vmbus_channel_msginfo *msginfo = NULL;
- struct vmbus_channel_msginfo *submsginfo;
- u32 msgcount;
+ struct vmbus_channel_msginfo *submsginfo, *tmp;
struct list_head *curr;
u32 next_gpadl_handle;
unsigned long flags;
next_gpadl_handle =
(atomic_inc_return(&vmbus_connection.next_gpadl_handle) - 1);
- ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount);
+ ret = create_gpadl_header(kbuffer, size, &msginfo);
if (ret)
return ret;
if (ret != 0)
goto cleanup;
- if (msgcount > 1) {
- list_for_each(curr, &msginfo->submsglist) {
-
- submsginfo = (struct vmbus_channel_msginfo *)curr;
- gpadl_body =
- (struct vmbus_channel_gpadl_body *)submsginfo->msg;
+ list_for_each(curr, &msginfo->submsglist) {
+ submsginfo = (struct vmbus_channel_msginfo *)curr;
+ gpadl_body =
+ (struct vmbus_channel_gpadl_body *)submsginfo->msg;
- gpadl_body->header.msgtype =
- CHANNELMSG_GPADL_BODY;
- gpadl_body->gpadl = next_gpadl_handle;
+ gpadl_body->header.msgtype =
+ CHANNELMSG_GPADL_BODY;
+ gpadl_body->gpadl = next_gpadl_handle;
- ret = vmbus_post_msg(gpadl_body,
- submsginfo->msgsize -
- sizeof(*submsginfo));
- if (ret != 0)
- goto cleanup;
+ ret = vmbus_post_msg(gpadl_body,
+ submsginfo->msgsize -
+ sizeof(*submsginfo));
+ if (ret != 0)
+ goto cleanup;
- }
}
wait_for_completion(&msginfo->waitevent);
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&msginfo->msglistentry);
spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
+ list_for_each_entry_safe(submsginfo, tmp, &msginfo->submsglist,
+ msglistentry) {
+ kfree(submsginfo);
+ }
kfree(msginfo);
return ret;
static int vmbus_close_internal(struct vmbus_channel *channel)
{
struct vmbus_channel_close_channel *msg;
- struct tasklet_struct *tasklet;
int ret;
/*
* To resolve the race, we can serialize them by disabling the
* tasklet when the latter is running here.
*/
- tasklet = hv_context.event_dpc[channel->target_cpu];
- tasklet_disable(tasklet);
+ hv_event_tasklet_disable(channel);
/*
* In case a device driver's probe() fails (e.g.,
get_order(channel->ringbuffer_pagecount * PAGE_SIZE));
out:
- tasklet_enable(tasklet);
+ hv_event_tasklet_enable(channel);
return ret;
}
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, num_vecs,
- &signal, lock);
+ &signal, lock, channel->signal_policy);
/*
* Signalling the host is conditional on many factors:
* mechanism which can hurt the performance otherwise.
*/
- if (channel->signal_policy)
- signal = true;
- else
- kick_q = true;
-
if (((ret == 0) && kick_q && signal) ||
(ret && !is_hvsock_channel(channel)))
vmbus_setevent(channel);
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
- &signal, lock);
+ &signal, lock, channel->signal_policy);
/*
* Signalling the host is conditional on many factors:
* enough condition that it should not matter.
*/
- if (channel->signal_policy)
- signal = true;
- else
- kick_q = true;
-
if (((ret == 0) && kick_q && signal) || (ret))
vmbus_setevent(channel);
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
- &signal, lock);
+ &signal, lock, channel->signal_policy);
if (ret == 0 && signal)
vmbus_setevent(channel);
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
- &signal, lock);
+ &signal, lock, channel->signal_policy);
if (ret == 0 && signal)
vmbus_setevent(channel);
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
+#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mm.h>
},
};
-static u16 hv_get_dev_type(const uuid_le *guid)
+static const struct {
+ uuid_le guid;
+} vmbus_unsupported_devs[] = {
+ { HV_AVMA1_GUID },
+ { HV_AVMA2_GUID },
+ { HV_RDV_GUID },
+};
+
+static bool is_unsupported_vmbus_devs(const uuid_le *guid)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vmbus_unsupported_devs); i++)
+ if (!uuid_le_cmp(*guid, vmbus_unsupported_devs[i].guid))
+ return true;
+ return false;
+}
+
+static u16 hv_get_dev_type(const struct vmbus_channel *channel)
{
+ const uuid_le *guid = &channel->offermsg.offer.if_type;
u16 i;
+ if (is_hvsock_channel(channel) || is_unsupported_vmbus_devs(guid))
+ return HV_UNKOWN;
+
for (i = HV_IDE; i < HV_UNKOWN; i++) {
if (!uuid_le_cmp(*guid, vmbus_devs[i].guid))
return i;
vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released));
}
+void hv_event_tasklet_disable(struct vmbus_channel *channel)
+{
+ struct tasklet_struct *tasklet;
+ tasklet = hv_context.event_dpc[channel->target_cpu];
+ tasklet_disable(tasklet);
+}
+
+void hv_event_tasklet_enable(struct vmbus_channel *channel)
+{
+ struct tasklet_struct *tasklet;
+ tasklet = hv_context.event_dpc[channel->target_cpu];
+ tasklet_enable(tasklet);
+
+ /* In case there is any pending event */
+ tasklet_schedule(tasklet);
+}
+
void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
{
unsigned long flags;
struct vmbus_channel *primary_channel;
- vmbus_release_relid(relid);
-
BUG_ON(!channel->rescind);
BUG_ON(!mutex_is_locked(&vmbus_connection.channel_mutex));
+ hv_event_tasklet_disable(channel);
if (channel->target_cpu != get_cpu()) {
put_cpu();
smp_call_function_single(channel->target_cpu,
percpu_channel_deq(channel);
put_cpu();
}
+ hv_event_tasklet_enable(channel);
if (channel->primary_channel == NULL) {
list_del(&channel->listentry);
* We need to free the bit for init_vp_index() to work in the case
* of sub-channel, when we reload drivers like hv_netvsc.
*/
- cpumask_clear_cpu(channel->target_cpu,
- &primary_channel->alloced_cpus_in_node);
+ if (channel->affinity_policy == HV_LOCALIZED)
+ cpumask_clear_cpu(channel->target_cpu,
+ &primary_channel->alloced_cpus_in_node);
+
+ vmbus_release_relid(relid);
free_channel(channel);
}
goto err_free_chan;
}
- dev_type = hv_get_dev_type(&newchannel->offermsg.offer.if_type);
+ dev_type = hv_get_dev_type(newchannel);
+ if (dev_type == HV_NIC)
+ set_channel_signal_state(newchannel, HV_SIGNAL_POLICY_EXPLICIT);
init_vp_index(newchannel, dev_type);
+ hv_event_tasklet_disable(newchannel);
if (newchannel->target_cpu != get_cpu()) {
put_cpu();
smp_call_function_single(newchannel->target_cpu,
percpu_channel_enq(newchannel);
put_cpu();
}
+ hv_event_tasklet_enable(newchannel);
/*
* This state is used to indicate a successful open
return;
err_deq_chan:
- vmbus_release_relid(newchannel->offermsg.child_relid);
-
mutex_lock(&vmbus_connection.channel_mutex);
list_del(&newchannel->listentry);
mutex_unlock(&vmbus_connection.channel_mutex);
+ hv_event_tasklet_disable(newchannel);
if (newchannel->target_cpu != get_cpu()) {
put_cpu();
smp_call_function_single(newchannel->target_cpu,
percpu_channel_deq(newchannel);
put_cpu();
}
+ hv_event_tasklet_enable(newchannel);
+
+ vmbus_release_relid(newchannel->offermsg.child_relid);
err_free_chan:
free_channel(newchannel);
}
/*
- * We distribute primary channels evenly across all the available
- * NUMA nodes and within the assigned NUMA node we will assign the
- * first available CPU to the primary channel.
- * The sub-channels will be assigned to the CPUs available in the
- * NUMA node evenly.
+ * Based on the channel affinity policy, we will assign the NUMA
+ * nodes.
*/
- if (!primary) {
+
+ if ((channel->affinity_policy == HV_BALANCED) || (!primary)) {
while (true) {
next_node = next_numa_node_id++;
- if (next_node == nr_node_ids)
+ if (next_node == nr_node_ids) {
next_node = next_numa_node_id = 0;
+ continue;
+ }
if (cpumask_empty(cpumask_of_node(next_node)))
continue;
break;
cur_cpu = -1;
- /*
- * Normally Hyper-V host doesn't create more subchannels than there
- * are VCPUs on the node but it is possible when not all present VCPUs
- * on the node are initialized by guest. Clear the alloced_cpus_in_node
- * to start over.
- */
- if (cpumask_equal(&primary->alloced_cpus_in_node,
- cpumask_of_node(primary->numa_node)))
- cpumask_clear(&primary->alloced_cpus_in_node);
+ if (primary->affinity_policy == HV_LOCALIZED) {
+ /*
+ * Normally Hyper-V host doesn't create more subchannels
+ * than there are VCPUs on the node but it is possible when not
+ * all present VCPUs on the node are initialized by guest.
+ * Clear the alloced_cpus_in_node to start over.
+ */
+ if (cpumask_equal(&primary->alloced_cpus_in_node,
+ cpumask_of_node(primary->numa_node)))
+ cpumask_clear(&primary->alloced_cpus_in_node);
+ }
while (true) {
cur_cpu = cpumask_next(cur_cpu, &available_mask);
continue;
}
- /*
- * NOTE: in the case of sub-channel, we clear the sub-channel
- * related bit(s) in primary->alloced_cpus_in_node in
- * hv_process_channel_removal(), so when we reload drivers
- * like hv_netvsc in SMP guest, here we're able to re-allocate
- * bit from primary->alloced_cpus_in_node.
- */
- if (!cpumask_test_cpu(cur_cpu,
- &primary->alloced_cpus_in_node)) {
- cpumask_set_cpu(cur_cpu,
- &primary->alloced_cpus_in_node);
+ if (primary->affinity_policy == HV_LOCALIZED) {
+ /*
+ * NOTE: in the case of sub-channel, we clear the
+ * sub-channel related bit(s) in
+ * primary->alloced_cpus_in_node in
+ * hv_process_channel_removal(), so when we
+ * reload drivers like hv_netvsc in SMP guest, here
+ * we're able to re-allocate
+ * bit from primary->alloced_cpus_in_node.
+ */
+ if (!cpumask_test_cpu(cur_cpu,
+ &primary->alloced_cpus_in_node)) {
+ cpumask_set_cpu(cur_cpu,
+ &primary->alloced_cpus_in_node);
+ cpumask_set_cpu(cur_cpu, alloced_mask);
+ break;
+ }
+ } else {
cpumask_set_cpu(cur_cpu, alloced_mask);
break;
}
union hv_connection_id conn_id;
int ret = 0;
int retries = 0;
- u32 msec = 1;
+ u32 usec = 1;
conn_id.asu32 = 0;
conn_id.u.id = VMBUS_MESSAGE_CONNECTION_ID;
}
retries++;
- msleep(msec);
- if (msec < 2048)
- msec *= 2;
+ udelay(usec);
+ if (usec < 2048)
+ usec *= 2;
}
return ret;
}
*
* This routine is called normally during driver unloading or exiting.
*/
-void hv_cleanup(void)
+void hv_cleanup(bool crash)
{
union hv_x64_msr_hypercall_contents hypercall_msr;
if (hv_context.hypercall_page) {
hypercall_msr.as_uint64 = 0;
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
- vfree(hv_context.hypercall_page);
+ if (!crash)
+ vfree(hv_context.hypercall_page);
hv_context.hypercall_page = NULL;
}
hypercall_msr.as_uint64 = 0;
wrmsrl(HV_X64_MSR_REFERENCE_TSC, hypercall_msr.as_uint64);
- vfree(hv_context.tsc_page);
+ if (!crash)
+ vfree(hv_context.tsc_page);
hv_context.tsc_page = NULL;
}
#endif
* currently hot added. We hot add in multiples of 128M
* chunks; it is possible that we may not be able to bring
* online all the pages in the region. The range
- * covered_end_pfn defines the pages that can
+ * covered_start_pfn:covered_end_pfn defines the pages that can
* be brough online.
*/
struct hv_hotadd_state {
struct list_head list;
unsigned long start_pfn;
+ unsigned long covered_start_pfn;
unsigned long covered_end_pfn;
unsigned long ha_end_pfn;
unsigned long end_pfn;
+ /*
+ * A list of gaps.
+ */
+ struct list_head gap_list;
+};
+
+struct hv_hotadd_gap {
+ struct list_head list;
+ unsigned long start_pfn;
+ unsigned long end_pfn;
};
struct balloon_state {
*/
struct task_struct *thread;
- struct mutex ha_region_mutex;
+ /*
+ * Protects ha_region_list, num_pages_onlined counter and individual
+ * regions from ha_region_list.
+ */
+ spinlock_t ha_lock;
/*
* A list of hot-add regions.
void *v)
{
struct memory_notify *mem = (struct memory_notify *)v;
+ unsigned long flags;
switch (val) {
- case MEM_GOING_ONLINE:
- mutex_lock(&dm_device.ha_region_mutex);
- break;
-
case MEM_ONLINE:
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
dm_device.num_pages_onlined += mem->nr_pages;
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
case MEM_CANCEL_ONLINE:
- if (val == MEM_ONLINE ||
- mutex_is_locked(&dm_device.ha_region_mutex))
- mutex_unlock(&dm_device.ha_region_mutex);
if (dm_device.ha_waiting) {
dm_device.ha_waiting = false;
complete(&dm_device.ol_waitevent);
break;
case MEM_OFFLINE:
- mutex_lock(&dm_device.ha_region_mutex);
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
dm_device.num_pages_onlined -= mem->nr_pages;
- mutex_unlock(&dm_device.ha_region_mutex);
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
break;
+ case MEM_GOING_ONLINE:
case MEM_GOING_OFFLINE:
case MEM_CANCEL_OFFLINE:
break;
.priority = 0
};
+/* Check if the particular page is backed and can be onlined and online it. */
+static void hv_page_online_one(struct hv_hotadd_state *has, struct page *pg)
+{
+ unsigned long cur_start_pgp;
+ unsigned long cur_end_pgp;
+ struct hv_hotadd_gap *gap;
+
+ cur_start_pgp = (unsigned long)pfn_to_page(has->covered_start_pfn);
+ cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn);
+
+ /* The page is not backed. */
+ if (((unsigned long)pg < cur_start_pgp) ||
+ ((unsigned long)pg >= cur_end_pgp))
+ return;
+
+ /* Check for gaps. */
+ list_for_each_entry(gap, &has->gap_list, list) {
+ cur_start_pgp = (unsigned long)
+ pfn_to_page(gap->start_pfn);
+ cur_end_pgp = (unsigned long)
+ pfn_to_page(gap->end_pfn);
+ if (((unsigned long)pg >= cur_start_pgp) &&
+ ((unsigned long)pg < cur_end_pgp)) {
+ return;
+ }
+ }
+
+ /* This frame is currently backed; online the page. */
+ __online_page_set_limits(pg);
+ __online_page_increment_counters(pg);
+ __online_page_free(pg);
+}
-static void hv_bring_pgs_online(unsigned long start_pfn, unsigned long size)
+static void hv_bring_pgs_online(struct hv_hotadd_state *has,
+ unsigned long start_pfn, unsigned long size)
{
int i;
- for (i = 0; i < size; i++) {
- struct page *pg;
- pg = pfn_to_page(start_pfn + i);
- __online_page_set_limits(pg);
- __online_page_increment_counters(pg);
- __online_page_free(pg);
- }
+ for (i = 0; i < size; i++)
+ hv_page_online_one(has, pfn_to_page(start_pfn + i));
}
static void hv_mem_hot_add(unsigned long start, unsigned long size,
unsigned long start_pfn;
unsigned long processed_pfn;
unsigned long total_pfn = pfn_count;
+ unsigned long flags;
for (i = 0; i < (size/HA_CHUNK); i++) {
start_pfn = start + (i * HA_CHUNK);
+
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
has->ha_end_pfn += HA_CHUNK;
if (total_pfn > HA_CHUNK) {
}
has->covered_end_pfn += processed_pfn;
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
init_completion(&dm_device.ol_waitevent);
- dm_device.ha_waiting = true;
+ dm_device.ha_waiting = !memhp_auto_online;
- mutex_unlock(&dm_device.ha_region_mutex);
nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
ret = add_memory(nid, PFN_PHYS((start_pfn)),
(HA_CHUNK << PAGE_SHIFT));
*/
do_hot_add = false;
}
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
has->ha_end_pfn -= HA_CHUNK;
has->covered_end_pfn -= processed_pfn;
- mutex_lock(&dm_device.ha_region_mutex);
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
break;
}
/*
- * Wait for the memory block to be onlined.
- * Since the hot add has succeeded, it is ok to
- * proceed even if the pages in the hot added region
- * have not been "onlined" within the allowed time.
+ * Wait for the memory block to be onlined when memory onlining
+ * is done outside of kernel (memhp_auto_online). Since the hot
+ * add has succeeded, it is ok to proceed even if the pages in
+ * the hot added region have not been "onlined" within the
+ * allowed time.
*/
- wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ);
- mutex_lock(&dm_device.ha_region_mutex);
+ if (dm_device.ha_waiting)
+ wait_for_completion_timeout(&dm_device.ol_waitevent,
+ 5*HZ);
post_status(&dm_device);
}
static void hv_online_page(struct page *pg)
{
- struct list_head *cur;
struct hv_hotadd_state *has;
unsigned long cur_start_pgp;
unsigned long cur_end_pgp;
+ unsigned long flags;
- list_for_each(cur, &dm_device.ha_region_list) {
- has = list_entry(cur, struct hv_hotadd_state, list);
- cur_start_pgp = (unsigned long)pfn_to_page(has->start_pfn);
- cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn);
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
+ list_for_each_entry(has, &dm_device.ha_region_list, list) {
+ cur_start_pgp = (unsigned long)
+ pfn_to_page(has->start_pfn);
+ cur_end_pgp = (unsigned long)pfn_to_page(has->end_pfn);
- if (((unsigned long)pg >= cur_start_pgp) &&
- ((unsigned long)pg < cur_end_pgp)) {
- /*
- * This frame is currently backed; online the
- * page.
- */
- __online_page_set_limits(pg);
- __online_page_increment_counters(pg);
- __online_page_free(pg);
- }
+ /* The page belongs to a different HAS. */
+ if (((unsigned long)pg < cur_start_pgp) ||
+ ((unsigned long)pg >= cur_end_pgp))
+ continue;
+
+ hv_page_online_one(has, pg);
+ break;
}
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
}
-static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
+static int pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
{
- struct list_head *cur;
struct hv_hotadd_state *has;
+ struct hv_hotadd_gap *gap;
unsigned long residual, new_inc;
+ int ret = 0;
+ unsigned long flags;
- if (list_empty(&dm_device.ha_region_list))
- return false;
-
- list_for_each(cur, &dm_device.ha_region_list) {
- has = list_entry(cur, struct hv_hotadd_state, list);
-
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
+ list_for_each_entry(has, &dm_device.ha_region_list, list) {
/*
* If the pfn range we are dealing with is not in the current
* "hot add block", move on.
*/
if (start_pfn < has->start_pfn || start_pfn >= has->end_pfn)
continue;
+
+ /*
+ * If the current start pfn is not where the covered_end
+ * is, create a gap and update covered_end_pfn.
+ */
+ if (has->covered_end_pfn != start_pfn) {
+ gap = kzalloc(sizeof(struct hv_hotadd_gap), GFP_ATOMIC);
+ if (!gap) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ INIT_LIST_HEAD(&gap->list);
+ gap->start_pfn = has->covered_end_pfn;
+ gap->end_pfn = start_pfn;
+ list_add_tail(&gap->list, &has->gap_list);
+
+ has->covered_end_pfn = start_pfn;
+ }
+
/*
* If the current hot add-request extends beyond
* our current limit; extend it.
has->end_pfn += new_inc;
}
- /*
- * If the current start pfn is not where the covered_end
- * is, update it.
- */
-
- if (has->covered_end_pfn != start_pfn)
- has->covered_end_pfn = start_pfn;
-
- return true;
-
+ ret = 1;
+ break;
}
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
- return false;
+ return ret;
}
static unsigned long handle_pg_range(unsigned long pg_start,
unsigned long start_pfn = pg_start;
unsigned long pfn_cnt = pg_count;
unsigned long size;
- struct list_head *cur;
struct hv_hotadd_state *has;
unsigned long pgs_ol = 0;
unsigned long old_covered_state;
+ unsigned long res = 0, flags;
- if (list_empty(&dm_device.ha_region_list))
- return 0;
-
- list_for_each(cur, &dm_device.ha_region_list) {
- has = list_entry(cur, struct hv_hotadd_state, list);
-
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
+ list_for_each_entry(has, &dm_device.ha_region_list, list) {
/*
* If the pfn range we are dealing with is not in the current
* "hot add block", move on.
if (pgs_ol > pfn_cnt)
pgs_ol = pfn_cnt;
+ has->covered_end_pfn += pgs_ol;
+ pfn_cnt -= pgs_ol;
/*
* Check if the corresponding memory block is already
* online by checking its last previously backed page.
*/
if (start_pfn > has->start_pfn &&
!PageReserved(pfn_to_page(start_pfn - 1)))
- hv_bring_pgs_online(start_pfn, pgs_ol);
+ hv_bring_pgs_online(has, start_pfn, pgs_ol);
- has->covered_end_pfn += pgs_ol;
- pfn_cnt -= pgs_ol;
}
if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) {
} else {
pfn_cnt = size;
}
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
hv_mem_hot_add(has->ha_end_pfn, size, pfn_cnt, has);
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
}
/*
* If we managed to online any pages that were given to us,
* we declare success.
*/
- return has->covered_end_pfn - old_covered_state;
-
+ res = has->covered_end_pfn - old_covered_state;
+ break;
}
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
- return 0;
+ return res;
}
static unsigned long process_hot_add(unsigned long pg_start,
unsigned long rg_size)
{
struct hv_hotadd_state *ha_region = NULL;
+ int covered;
+ unsigned long flags;
if (pfn_cnt == 0)
return 0;
- if (!dm_device.host_specified_ha_region)
- if (pfn_covered(pg_start, pfn_cnt))
+ if (!dm_device.host_specified_ha_region) {
+ covered = pfn_covered(pg_start, pfn_cnt);
+ if (covered < 0)
+ return 0;
+
+ if (covered)
goto do_pg_range;
+ }
/*
* If the host has specified a hot-add range; deal with it first.
return 0;
INIT_LIST_HEAD(&ha_region->list);
+ INIT_LIST_HEAD(&ha_region->gap_list);
- list_add_tail(&ha_region->list, &dm_device.ha_region_list);
ha_region->start_pfn = rg_start;
ha_region->ha_end_pfn = rg_start;
+ ha_region->covered_start_pfn = pg_start;
ha_region->covered_end_pfn = pg_start;
ha_region->end_pfn = rg_start + rg_size;
+
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
+ list_add_tail(&ha_region->list, &dm_device.ha_region_list);
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
}
do_pg_range:
resp.hdr.size = sizeof(struct dm_hot_add_response);
#ifdef CONFIG_MEMORY_HOTPLUG
- mutex_lock(&dm_device.ha_region_mutex);
pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;
pfn_cnt = dm->ha_wrk.ha_page_range.finfo.page_cnt;
rg_start, rg_sz);
dm->num_pages_added += resp.page_count;
- mutex_unlock(&dm_device.ha_region_mutex);
#endif
/*
* The result field of the response structure has the
static void post_status(struct hv_dynmem_device *dm)
{
struct dm_status status;
- struct sysinfo val;
unsigned long now = jiffies;
unsigned long last_post = last_post_time;
if (!time_after(now, (last_post_time + HZ)))
return;
- si_meminfo(&val);
memset(&status, 0, sizeof(struct dm_status));
status.hdr.type = DM_STATUS_REPORT;
status.hdr.size = sizeof(struct dm_status);
* num_pages_onlined) as committed to the host, otherwise it can try
* asking us to balloon them out.
*/
- status.num_avail = val.freeram;
+ status.num_avail = si_mem_available();
status.num_committed = vm_memory_committed() +
dm->num_pages_ballooned +
(dm->num_pages_added > dm->num_pages_onlined ?
int ret;
bool done = false;
int i;
- struct sysinfo val;
+ long avail_pages;
unsigned long floor;
/* The host balloons pages in 2M granularity. */
*/
alloc_unit = 512;
- si_meminfo(&val);
+ avail_pages = si_mem_available();
floor = compute_balloon_floor();
/* Refuse to balloon below the floor, keep the 2M granularity. */
- if (val.freeram < num_pages || val.freeram - num_pages < floor) {
- num_pages = val.freeram > floor ? (val.freeram - floor) : 0;
+ if (avail_pages < num_pages || avail_pages - num_pages < floor) {
+ num_pages = avail_pages > floor ? (avail_pages - floor) : 0;
num_pages -= num_pages % PAGES_IN_2M;
}
bl_resp->hdr.size = sizeof(struct dm_balloon_response);
bl_resp->more_pages = 1;
-
num_pages -= num_ballooned;
num_ballooned = alloc_balloon_pages(&dm_device, num_pages,
bl_resp, alloc_unit);
init_completion(&dm_device.host_event);
init_completion(&dm_device.config_event);
INIT_LIST_HEAD(&dm_device.ha_region_list);
- mutex_init(&dm_device.ha_region_mutex);
+ spin_lock_init(&dm_device.ha_lock);
INIT_WORK(&dm_device.balloon_wrk.wrk, balloon_up);
INIT_WORK(&dm_device.ha_wrk.wrk, hot_add_req);
dm_device.host_specified_ha_region = false;
static int balloon_remove(struct hv_device *dev)
{
struct hv_dynmem_device *dm = hv_get_drvdata(dev);
- struct list_head *cur, *tmp;
- struct hv_hotadd_state *has;
+ struct hv_hotadd_state *has, *tmp;
+ struct hv_hotadd_gap *gap, *tmp_gap;
+ unsigned long flags;
if (dm->num_pages_ballooned != 0)
pr_warn("Ballooned pages: %d\n", dm->num_pages_ballooned);
restore_online_page_callback(&hv_online_page);
unregister_memory_notifier(&hv_memory_nb);
#endif
- list_for_each_safe(cur, tmp, &dm->ha_region_list) {
- has = list_entry(cur, struct hv_hotadd_state, list);
+ spin_lock_irqsave(&dm_device.ha_lock, flags);
+ list_for_each_entry_safe(has, tmp, &dm->ha_region_list, list) {
+ list_for_each_entry_safe(gap, tmp_gap, &has->gap_list, list) {
+ list_del(&gap->list);
+ kfree(gap);
+ }
list_del(&has->list);
kfree(has);
}
+ spin_unlock_irqrestore(&dm_device.ha_lock, flags);
return 0;
}
hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper);
}
+static void fcopy_register_done(void)
+{
+ pr_debug("FCP: userspace daemon registered\n");
+ hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper);
+}
+
static int fcopy_handle_handshake(u32 version)
{
u32 our_ver = FCOPY_CURRENT_VERSION;
break;
case FCOPY_VERSION_1:
/* Daemon expects us to reply with our own version */
- if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver)))
+ if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver),
+ fcopy_register_done))
return -EFAULT;
dm_reg_value = version;
break;
*/
return -EINVAL;
}
- pr_debug("FCP: userspace daemon ver. %d registered\n", version);
- hv_poll_channel(fcopy_transaction.recv_channel, fcopy_poll_wrapper);
+ pr_debug("FCP: userspace daemon ver. %d connected\n", version);
return 0;
}
}
fcopy_transaction.state = HVUTIL_USERSPACE_REQ;
- rc = hvutil_transport_send(hvt, out_src, out_len);
+ rc = hvutil_transport_send(hvt, out_src, out_len, NULL);
if (rc) {
pr_debug("FCP: failed to communicate to the daemon: %d\n", rc);
if (cancel_delayed_work_sync(&fcopy_timeout_work)) {
hv_kvp_onchannelcallback(channel);
}
+static void kvp_register_done(void)
+{
+ /*
+ * If we're still negotiating with the host cancel the timeout
+ * work to not poll the channel twice.
+ */
+ pr_debug("KVP: userspace daemon registered\n");
+ cancel_delayed_work_sync(&kvp_host_handshake_work);
+ hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper);
+}
+
static void
kvp_register(int reg_value)
{
kvp_msg->kvp_hdr.operation = reg_value;
strcpy(version, HV_DRV_VERSION);
- hvutil_transport_send(hvt, kvp_msg, sizeof(*kvp_msg));
+ hvutil_transport_send(hvt, kvp_msg, sizeof(*kvp_msg),
+ kvp_register_done);
kfree(kvp_msg);
}
}
/*
* We have a compatible daemon; complete the handshake.
*/
- pr_debug("KVP: userspace daemon ver. %d registered\n",
- KVP_OP_REGISTER);
+ pr_debug("KVP: userspace daemon ver. %d connected\n",
+ msg->kvp_hdr.operation);
kvp_register(dm_reg_value);
- /*
- * If we're still negotiating with the host cancel the timeout
- * work to not poll the channel twice.
- */
- cancel_delayed_work_sync(&kvp_host_handshake_work);
- hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper);
-
return 0;
}
}
kvp_transaction.state = HVUTIL_USERSPACE_REQ;
- rc = hvutil_transport_send(hvt, message, sizeof(*message));
+ rc = hvutil_transport_send(hvt, message, sizeof(*message), NULL);
if (rc) {
pr_debug("KVP: failed to communicate to the daemon: %d\n", rc);
if (cancel_delayed_work_sync(&kvp_timeout_work)) {
static __u8 *recv_buffer;
static struct hvutil_transport *hvt;
-static void vss_send_op(struct work_struct *dummy);
static void vss_timeout_func(struct work_struct *dummy);
+static void vss_handle_request(struct work_struct *dummy);
static DECLARE_DELAYED_WORK(vss_timeout_work, vss_timeout_func);
-static DECLARE_WORK(vss_send_op_work, vss_send_op);
+static DECLARE_WORK(vss_handle_request_work, vss_handle_request);
static void vss_poll_wrapper(void *channel)
{
hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper);
}
+static void vss_register_done(void)
+{
+ hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper);
+ pr_debug("VSS: userspace daemon registered\n");
+}
+
static int vss_handle_handshake(struct hv_vss_msg *vss_msg)
{
u32 our_ver = VSS_OP_REGISTER1;
dm_reg_value = VSS_OP_REGISTER;
break;
case VSS_OP_REGISTER1:
- /* Daemon expects us to reply with our own version*/
- if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver)))
+ /* Daemon expects us to reply with our own version */
+ if (hvutil_transport_send(hvt, &our_ver, sizeof(our_ver),
+ vss_register_done))
return -EFAULT;
dm_reg_value = VSS_OP_REGISTER1;
break;
default:
return -EINVAL;
}
- hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper);
- pr_debug("VSS: userspace daemon ver. %d registered\n", dm_reg_value);
+ pr_debug("VSS: userspace daemon ver. %d connected\n", dm_reg_value);
return 0;
}
return vss_handle_handshake(vss_msg);
} else if (vss_transaction.state == HVUTIL_USERSPACE_REQ) {
vss_transaction.state = HVUTIL_USERSPACE_RECV;
+
+ if (vss_msg->vss_hdr.operation == VSS_OP_HOT_BACKUP)
+ vss_transaction.msg->vss_cf.flags =
+ VSS_HBU_NO_AUTO_RECOVERY;
+
if (cancel_delayed_work_sync(&vss_timeout_work)) {
vss_respond_to_host(vss_msg->error);
/* Transaction is finished, reset the state. */
return 0;
}
-
-static void vss_send_op(struct work_struct *dummy)
+static void vss_send_op(void)
{
int op = vss_transaction.msg->vss_hdr.operation;
int rc;
vss_msg->vss_hdr.operation = op;
vss_transaction.state = HVUTIL_USERSPACE_REQ;
- rc = hvutil_transport_send(hvt, vss_msg, sizeof(*vss_msg));
+
+ schedule_delayed_work(&vss_timeout_work, VSS_USERSPACE_TIMEOUT);
+
+ rc = hvutil_transport_send(hvt, vss_msg, sizeof(*vss_msg), NULL);
if (rc) {
pr_warn("VSS: failed to communicate to the daemon: %d\n", rc);
if (cancel_delayed_work_sync(&vss_timeout_work)) {
return;
}
+static void vss_handle_request(struct work_struct *dummy)
+{
+ switch (vss_transaction.msg->vss_hdr.operation) {
+ /*
+ * Initiate a "freeze/thaw" operation in the guest.
+ * We respond to the host once the operation is complete.
+ *
+ * We send the message to the user space daemon and the operation is
+ * performed in the daemon.
+ */
+ case VSS_OP_THAW:
+ case VSS_OP_FREEZE:
+ case VSS_OP_HOT_BACKUP:
+ if (vss_transaction.state < HVUTIL_READY) {
+ /* Userspace is not registered yet */
+ vss_respond_to_host(HV_E_FAIL);
+ return;
+ }
+ vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED;
+ vss_send_op();
+ return;
+ case VSS_OP_GET_DM_INFO:
+ vss_transaction.msg->dm_info.flags = 0;
+ break;
+ default:
+ break;
+ }
+
+ vss_respond_to_host(0);
+ hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper);
+}
+
/*
* Send a response back to the host.
*/
vss_transaction.recv_req_id = requestid;
vss_transaction.msg = (struct hv_vss_msg *)vss_msg;
- switch (vss_msg->vss_hdr.operation) {
- /*
- * Initiate a "freeze/thaw"
- * operation in the guest.
- * We respond to the host once
- * the operation is complete.
- *
- * We send the message to the
- * user space daemon and the
- * operation is performed in
- * the daemon.
- */
- case VSS_OP_FREEZE:
- case VSS_OP_THAW:
- if (vss_transaction.state < HVUTIL_READY) {
- /* Userspace is not registered yet */
- vss_respond_to_host(HV_E_FAIL);
- return;
- }
- vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED;
- schedule_work(&vss_send_op_work);
- schedule_delayed_work(&vss_timeout_work,
- VSS_USERSPACE_TIMEOUT);
- return;
-
- case VSS_OP_HOT_BACKUP:
- vss_msg->vss_cf.flags =
- VSS_HBU_NO_AUTO_RECOVERY;
- vss_respond_to_host(0);
- return;
-
- case VSS_OP_GET_DM_INFO:
- vss_msg->dm_info.flags = 0;
- vss_respond_to_host(0);
- return;
-
- default:
- vss_respond_to_host(0);
- return;
-
- }
-
+ schedule_work(&vss_handle_request_work);
+ return;
}
icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
{
vss_transaction.state = HVUTIL_DEVICE_DYING;
cancel_delayed_work_sync(&vss_timeout_work);
- cancel_work_sync(&vss_send_op_work);
+ cancel_work_sync(&vss_handle_request_work);
hvutil_transport_destroy(hvt);
}
#define SD_MINOR 0
#define SD_VERSION (SD_MAJOR << 16 | SD_MINOR)
-#define SD_WS2008_MAJOR 1
-#define SD_WS2008_VERSION (SD_WS2008_MAJOR << 16 | SD_MINOR)
+#define SD_MAJOR_1 1
+#define SD_VERSION_1 (SD_MAJOR_1 << 16 | SD_MINOR)
-#define TS_MAJOR 3
+#define TS_MAJOR 4
#define TS_MINOR 0
#define TS_VERSION (TS_MAJOR << 16 | TS_MINOR)
-#define TS_WS2008_MAJOR 1
-#define TS_WS2008_VERSION (TS_WS2008_MAJOR << 16 | TS_MINOR)
+#define TS_MAJOR_1 1
+#define TS_VERSION_1 (TS_MAJOR_1 << 16 | TS_MINOR)
+
+#define TS_MAJOR_3 3
+#define TS_VERSION_3 (TS_MAJOR_3 << 16 | TS_MINOR)
#define HB_MAJOR 3
-#define HB_MINOR 0
+#define HB_MINOR 0
#define HB_VERSION (HB_MAJOR << 16 | HB_MINOR)
-#define HB_WS2008_MAJOR 1
-#define HB_WS2008_VERSION (HB_WS2008_MAJOR << 16 | HB_MINOR)
+#define HB_MAJOR_1 1
+#define HB_VERSION_1 (HB_MAJOR_1 << 16 | HB_MINOR)
static int sd_srv_version;
static int ts_srv_version;
.util_cb = shutdown_onchannelcallback,
};
+static int hv_timesync_init(struct hv_util_service *srv);
+static void hv_timesync_deinit(void);
+
static void timesync_onchannelcallback(void *context);
static struct hv_util_service util_timesynch = {
.util_cb = timesync_onchannelcallback,
+ .util_init = hv_timesync_init,
+ .util_deinit = hv_timesync_deinit,
};
static void heartbeat_onchannelcallback(void *context);
schedule_work(&shutdown_work);
}
-/*
- * Set guest time to host UTC time.
- */
-static inline void do_adj_guesttime(u64 hosttime)
-{
- s64 host_tns;
- struct timespec host_ts;
-
- host_tns = (hosttime - WLTIMEDELTA) * 100;
- host_ts = ns_to_timespec(host_tns);
-
- do_settimeofday(&host_ts);
-}
-
/*
* Set the host time in a process context.
*/
struct adj_time_work {
struct work_struct work;
u64 host_time;
+ u64 ref_time;
+ u8 flags;
};
static void hv_set_host_time(struct work_struct *work)
{
struct adj_time_work *wrk;
+ s64 host_tns;
+ u64 newtime;
+ struct timespec host_ts;
wrk = container_of(work, struct adj_time_work, work);
- do_adj_guesttime(wrk->host_time);
- kfree(wrk);
+
+ newtime = wrk->host_time;
+ if (ts_srv_version > TS_VERSION_3) {
+ /*
+ * Some latency has been introduced since Hyper-V generated
+ * its time sample. Take that latency into account before
+ * using TSC reference time sample from Hyper-V.
+ *
+ * This sample is given by TimeSync v4 and above hosts.
+ */
+ u64 current_tick;
+
+ rdmsrl(HV_X64_MSR_TIME_REF_COUNT, current_tick);
+ newtime += (current_tick - wrk->ref_time);
+ }
+ host_tns = (newtime - WLTIMEDELTA) * 100;
+ host_ts = ns_to_timespec(host_tns);
+
+ do_settimeofday(&host_ts);
}
/*
* ICTIMESYNCFLAG_SYNC flag bit indicates reboot, restore events of the VM.
* After reboot the flag ICTIMESYNCFLAG_SYNC is included in the first time
* message after the timesync channel is opened. Since the hv_utils module is
- * loaded after hv_vmbus, the first message is usually missed. The other
- * thing is, systime is automatically set to emulated hardware clock which may
- * not be UTC time or in the same time zone. So, to override these effects, we
- * use the first 50 time samples for initial system time setting.
+ * loaded after hv_vmbus, the first message is usually missed. This bit is
+ * considered a hard request to discipline the clock.
+ *
+ * ICTIMESYNCFLAG_SAMPLE bit indicates a time sample from host. This is
+ * typically used as a hint to the guest. The guest is under no obligation
+ * to discipline the clock.
*/
-static inline void adj_guesttime(u64 hosttime, u8 flags)
+static struct adj_time_work wrk;
+static inline void adj_guesttime(u64 hosttime, u64 reftime, u8 flags)
{
- struct adj_time_work *wrk;
- static s32 scnt = 50;
- wrk = kmalloc(sizeof(struct adj_time_work), GFP_ATOMIC);
- if (wrk == NULL)
+ /*
+ * This check is safe since we are executing in the
+ * interrupt context and time synch messages arre always
+ * delivered on the same CPU.
+ */
+ if (work_pending(&wrk.work))
return;
- wrk->host_time = hosttime;
- if ((flags & ICTIMESYNCFLAG_SYNC) != 0) {
- INIT_WORK(&wrk->work, hv_set_host_time);
- schedule_work(&wrk->work);
- return;
+ wrk.host_time = hosttime;
+ wrk.ref_time = reftime;
+ wrk.flags = flags;
+ if ((flags & (ICTIMESYNCFLAG_SYNC | ICTIMESYNCFLAG_SAMPLE)) != 0) {
+ schedule_work(&wrk.work);
}
-
- if ((flags & ICTIMESYNCFLAG_SAMPLE) != 0 && scnt > 0) {
- scnt--;
- INIT_WORK(&wrk->work, hv_set_host_time);
- schedule_work(&wrk->work);
- } else
- kfree(wrk);
}
/*
u64 requestid;
struct icmsg_hdr *icmsghdrp;
struct ictimesync_data *timedatap;
+ struct ictimesync_ref_data *refdata;
u8 *time_txf_buf = util_timesynch.recv_buffer;
struct icmsg_negotiate *negop = NULL;
time_txf_buf,
util_fw_version,
ts_srv_version);
+ pr_info("Using TimeSync version %d.%d\n",
+ ts_srv_version >> 16, ts_srv_version & 0xFFFF);
} else {
- timedatap = (struct ictimesync_data *)&time_txf_buf[
- sizeof(struct vmbuspipe_hdr) +
- sizeof(struct icmsg_hdr)];
- adj_guesttime(timedatap->parenttime, timedatap->flags);
+ if (ts_srv_version > TS_VERSION_3) {
+ refdata = (struct ictimesync_ref_data *)
+ &time_txf_buf[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+
+ adj_guesttime(refdata->parenttime,
+ refdata->vmreferencetime,
+ refdata->flags);
+ } else {
+ timedatap = (struct ictimesync_data *)
+ &time_txf_buf[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+ adj_guesttime(timedatap->parenttime,
+ 0,
+ timedatap->flags);
+ }
}
icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
switch (vmbus_proto_version) {
case (VERSION_WS2008):
util_fw_version = UTIL_WS2K8_FW_VERSION;
- sd_srv_version = SD_WS2008_VERSION;
- ts_srv_version = TS_WS2008_VERSION;
- hb_srv_version = HB_WS2008_VERSION;
+ sd_srv_version = SD_VERSION_1;
+ ts_srv_version = TS_VERSION_1;
+ hb_srv_version = HB_VERSION_1;
break;
-
- default:
+ case(VERSION_WIN10):
util_fw_version = UTIL_FW_VERSION;
sd_srv_version = SD_VERSION;
ts_srv_version = TS_VERSION;
hb_srv_version = HB_VERSION;
+ break;
+ default:
+ util_fw_version = UTIL_FW_VERSION;
+ sd_srv_version = SD_VERSION;
+ ts_srv_version = TS_VERSION_3;
+ hb_srv_version = HB_VERSION;
}
ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0,
.remove = util_remove,
};
+static int hv_timesync_init(struct hv_util_service *srv)
+{
+ INIT_WORK(&wrk.work, hv_set_host_time);
+ return 0;
+}
+
+static void hv_timesync_deinit(void)
+{
+ cancel_work_sync(&wrk.work);
+}
+
static int __init init_hyperv_utils(void)
{
pr_info("Registering HyperV Utility Driver\n");
hvt->outmsg = NULL;
hvt->outmsg_len = 0;
+ if (hvt->on_read)
+ hvt->on_read();
+ hvt->on_read = NULL;
+
out_unlock:
mutex_unlock(&hvt->lock);
return ret;
mutex_unlock(&hvt->lock);
}
-int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
+int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len,
+ void (*on_read_cb)(void))
{
struct cn_msg *cn_msg;
int ret = 0;
memcpy(cn_msg->data, msg, len);
ret = cn_netlink_send(cn_msg, 0, 0, GFP_ATOMIC);
kfree(cn_msg);
+ /*
+ * We don't know when netlink messages are delivered but unlike
+ * in CHARDEV mode we're not blocked and we can send next
+ * messages right away.
+ */
+ if (on_read_cb)
+ on_read_cb();
return ret;
}
/* HVUTIL_TRANSPORT_CHARDEV */
if (hvt->outmsg) {
memcpy(hvt->outmsg, msg, len);
hvt->outmsg_len = len;
+ hvt->on_read = on_read_cb;
wake_up_interruptible(&hvt->outmsg_q);
} else
ret = -ENOMEM;
struct list_head list; /* hvt_list */
int (*on_msg)(void *, int); /* callback on new user message */
void (*on_reset)(void); /* callback when userspace drops */
+ void (*on_read)(void); /* callback on message read */
u8 *outmsg; /* message to the userspace */
int outmsg_len; /* its length */
wait_queue_head_t outmsg_q; /* poll/read wait queue */
u32 cn_idx, u32 cn_val,
int (*on_msg)(void *, int),
void (*on_reset)(void));
-int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len);
+int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len,
+ void (*on_read_cb)(void));
void hvutil_transport_destroy(struct hvutil_transport *hvt);
#endif /* _HV_UTILS_TRANSPORT_H */
extern int hv_init(void);
-extern void hv_cleanup(void);
+extern void hv_cleanup(bool crash);
extern int hv_post_message(union hv_connection_id connection_id,
enum hv_message_type message_type,
/* Interface */
-int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void *buffer,
- u32 buflen);
+int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
+ struct page *pages, u32 pagecnt);
void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info);
int hv_ringbuffer_write(struct hv_ring_buffer_info *ring_info,
struct kvec *kv_list,
- u32 kv_count, bool *signal, bool lock);
+ u32 kv_count, bool *signal, bool lock,
+ enum hv_signal_policy policy);
int hv_ringbuffer_read(struct hv_ring_buffer_info *inring_info,
void *buffer, u32 buflen, u32 *buffer_actual_len,
#include <linux/mm.h>
#include <linux/hyperv.h>
#include <linux/uio.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
#include "hyperv_vmbus.h"
* arrived.
*/
-static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi)
+static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi,
+ enum hv_signal_policy policy)
{
virt_mb();
if (READ_ONCE(rbi->ring_buffer->interrupt_mask))
return false;
+ /*
+ * When the client wants to control signaling,
+ * we only honour the host interrupt mask.
+ */
+ if (policy == HV_SIGNAL_POLICY_EXPLICIT)
+ return true;
+
/* check interrupt_mask before read_index */
virt_rmb();
/*
void *ring_buffer = hv_get_ring_buffer(ring_info);
u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);
- u32 frag_len;
-
- /* wrap-around detected at the src */
- if (destlen > ring_buffer_size - start_read_offset) {
- frag_len = ring_buffer_size - start_read_offset;
-
- memcpy(dest, ring_buffer + start_read_offset, frag_len);
- memcpy(dest + frag_len, ring_buffer, destlen - frag_len);
- } else
-
- memcpy(dest, ring_buffer + start_read_offset, destlen);
-
+ memcpy(dest, ring_buffer + start_read_offset, destlen);
start_read_offset += destlen;
start_read_offset %= ring_buffer_size;
{
void *ring_buffer = hv_get_ring_buffer(ring_info);
u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);
- u32 frag_len;
- /* wrap-around detected! */
- if (srclen > ring_buffer_size - start_write_offset) {
- frag_len = ring_buffer_size - start_write_offset;
- memcpy(ring_buffer + start_write_offset, src, frag_len);
- memcpy(ring_buffer, src + frag_len, srclen - frag_len);
- } else
- memcpy(ring_buffer + start_write_offset, src, srclen);
+ memcpy(ring_buffer + start_write_offset, src, srclen);
start_write_offset += srclen;
start_write_offset %= ring_buffer_size;
/* Initialize the ring buffer. */
int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
- void *buffer, u32 buflen)
+ struct page *pages, u32 page_cnt)
{
- if (sizeof(struct hv_ring_buffer) != PAGE_SIZE)
- return -EINVAL;
+ int i;
+ struct page **pages_wraparound;
+
+ BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE));
memset(ring_info, 0, sizeof(struct hv_ring_buffer_info));
- ring_info->ring_buffer = (struct hv_ring_buffer *)buffer;
+ /*
+ * First page holds struct hv_ring_buffer, do wraparound mapping for
+ * the rest.
+ */
+ pages_wraparound = kzalloc(sizeof(struct page *) * (page_cnt * 2 - 1),
+ GFP_KERNEL);
+ if (!pages_wraparound)
+ return -ENOMEM;
+
+ pages_wraparound[0] = pages;
+ for (i = 0; i < 2 * (page_cnt - 1); i++)
+ pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1];
+
+ ring_info->ring_buffer = (struct hv_ring_buffer *)
+ vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL);
+
+ kfree(pages_wraparound);
+
+
+ if (!ring_info->ring_buffer)
+ return -ENOMEM;
+
ring_info->ring_buffer->read_index =
ring_info->ring_buffer->write_index = 0;
/* Set the feature bit for enabling flow control. */
ring_info->ring_buffer->feature_bits.value = 1;
- ring_info->ring_size = buflen;
- ring_info->ring_datasize = buflen - sizeof(struct hv_ring_buffer);
+ ring_info->ring_size = page_cnt << PAGE_SHIFT;
+ ring_info->ring_datasize = ring_info->ring_size -
+ sizeof(struct hv_ring_buffer);
spin_lock_init(&ring_info->ring_lock);
/* Cleanup the ring buffer. */
void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)
{
+ vunmap(ring_info->ring_buffer);
}
/* Write to the ring buffer. */
int hv_ringbuffer_write(struct hv_ring_buffer_info *outring_info,
- struct kvec *kv_list, u32 kv_count, bool *signal, bool lock)
+ struct kvec *kv_list, u32 kv_count, bool *signal, bool lock,
+ enum hv_signal_policy policy)
{
int i = 0;
u32 bytes_avail_towrite;
if (lock)
spin_unlock_irqrestore(&outring_info->ring_lock, flags);
- *signal = hv_need_to_signal(old_write, outring_info);
+ *signal = hv_need_to_signal(old_write, outring_info, policy);
return 0;
}
static const char *fb_mmio_name = "fb_range";
static struct resource *fb_mmio;
-struct resource *hyperv_mmio;
-DEFINE_SEMAPHORE(hyperv_mmio_lock);
+static struct resource *hyperv_mmio;
+static DEFINE_SEMAPHORE(hyperv_mmio_lock);
static int vmbus_exists(void)
{
bus_unregister(&hv_bus);
err_cleanup:
- hv_cleanup();
+ hv_cleanup(false);
return ret;
}
vmbus_initiate_unload(false);
for_each_online_cpu(cpu)
smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1);
- hv_cleanup();
+ hv_cleanup(false);
};
static void hv_crash_handler(struct pt_regs *regs)
* for kdump.
*/
hv_synic_cleanup(NULL);
- hv_cleanup();
+ hv_cleanup(true);
};
static int __init hv_acpi_init(void)
&hyperv_panic_block);
}
bus_unregister(&hv_bus);
- hv_cleanup();
+ hv_cleanup(false);
for_each_online_cpu(cpu) {
tasklet_kill(hv_context.event_dpc[cpu]);
smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1);
if (coresight_timeout(drvdata->base, ETB_FFCR, ETB_FFCR_BIT, 0)) {
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- ETB_FFCR);
+ "timeout while waiting for completion of Manual Flush\n");
}
/* disable trace capture */
if (coresight_timeout(drvdata->base, ETB_FFSR, ETB_FFSR_BIT, 1)) {
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- ETB_FFCR);
+ "timeout while waiting for Formatter to Stop\n");
}
CS_LOCK(drvdata->base);
};
#define coresight_etb10_simple_func(name, offset) \
- coresight_simple_func(struct etb_drvdata, name, offset)
+ coresight_simple_func(struct etb_drvdata, NULL, name, offset)
coresight_etb10_simple_func(rdp, ETB_RAM_DEPTH_REG);
coresight_etb10_simple_func(sts, ETB_STATUS_REG);
struct coresight_platform_data *pdata = NULL;
struct etb_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
if (np) {
return -ENOMEM;
}
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
- desc->type = CORESIGHT_DEV_TYPE_SINK;
- desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
- desc->ops = &etb_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- desc->groups = coresight_etb_groups;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_SINK;
+ desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
+ desc.ops = &etb_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_etb_groups;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev))
return PTR_ERR(drvdata->csdev);
#include <linux/types.h>
#include <linux/workqueue.h>
+#include "coresight-etm-perf.h"
#include "coresight-priv.h"
static struct pmu etm_pmu;
static void etm_event_read(struct perf_event *event) {}
-static int etm_event_init(struct perf_event *event)
+static int etm_addr_filters_alloc(struct perf_event *event)
{
- if (event->attr.type != etm_pmu.type)
- return -ENOENT;
+ struct etm_filters *filters;
+ int node = event->cpu == -1 ? -1 : cpu_to_node(event->cpu);
+
+ filters = kzalloc_node(sizeof(struct etm_filters), GFP_KERNEL, node);
+ if (!filters)
+ return -ENOMEM;
+
+ if (event->parent)
+ memcpy(filters, event->parent->hw.addr_filters,
+ sizeof(*filters));
+
+ event->hw.addr_filters = filters;
return 0;
}
+static void etm_event_destroy(struct perf_event *event)
+{
+ kfree(event->hw.addr_filters);
+ event->hw.addr_filters = NULL;
+}
+
+static int etm_event_init(struct perf_event *event)
+{
+ int ret = 0;
+
+ if (event->attr.type != etm_pmu.type) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ret = etm_addr_filters_alloc(event);
+ if (ret)
+ goto out;
+
+ event->destroy = etm_event_destroy;
+out:
+ return ret;
+}
+
static void free_event_data(struct work_struct *work)
{
int cpu;
}
for_each_cpu(cpu, mask) {
- if (event_data->path[cpu])
+ if (!(IS_ERR_OR_NULL(event_data->path[cpu])))
coresight_release_path(event_data->path[cpu]);
}
* referenced later when the path is actually needed.
*/
event_data->path[cpu] = coresight_build_path(csdev);
- if (!event_data->path[cpu])
+ if (IS_ERR(event_data->path[cpu]))
goto err;
}
event->hw.state = 0;
/* Finally enable the tracer */
- if (source_ops(csdev)->enable(csdev, &event->attr, CS_MODE_PERF))
+ if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF))
goto fail_end_stop;
out:
return;
/* stop tracer */
- source_ops(csdev)->disable(csdev);
+ source_ops(csdev)->disable(csdev, event);
/* tell the core */
event->hw.state = PERF_HES_STOPPED;
etm_event_stop(event, PERF_EF_UPDATE);
}
+static int etm_addr_filters_validate(struct list_head *filters)
+{
+ bool range = false, address = false;
+ int index = 0;
+ struct perf_addr_filter *filter;
+
+ list_for_each_entry(filter, filters, entry) {
+ /*
+ * No need to go further if there's no more
+ * room for filters.
+ */
+ if (++index > ETM_ADDR_CMP_MAX)
+ return -EOPNOTSUPP;
+
+ /*
+ * As taken from the struct perf_addr_filter documentation:
+ * @range: 1: range, 0: address
+ *
+ * At this time we don't allow range and start/stop filtering
+ * to cohabitate, they have to be mutually exclusive.
+ */
+ if ((filter->range == 1) && address)
+ return -EOPNOTSUPP;
+
+ if ((filter->range == 0) && range)
+ return -EOPNOTSUPP;
+
+ /*
+ * For range filtering, the second address in the address
+ * range comparator needs to be higher than the first.
+ * Invalid otherwise.
+ */
+ if (filter->range && filter->size == 0)
+ return -EINVAL;
+
+ /*
+ * Everything checks out with this filter, record what we've
+ * received before moving on to the next one.
+ */
+ if (filter->range)
+ range = true;
+ else
+ address = true;
+ }
+
+ return 0;
+}
+
+static void etm_addr_filters_sync(struct perf_event *event)
+{
+ struct perf_addr_filters_head *head = perf_event_addr_filters(event);
+ unsigned long start, stop, *offs = event->addr_filters_offs;
+ struct etm_filters *filters = event->hw.addr_filters;
+ struct etm_filter *etm_filter;
+ struct perf_addr_filter *filter;
+ int i = 0;
+
+ list_for_each_entry(filter, &head->list, entry) {
+ start = filter->offset + offs[i];
+ stop = start + filter->size;
+ etm_filter = &filters->etm_filter[i];
+
+ if (filter->range == 1) {
+ etm_filter->start_addr = start;
+ etm_filter->stop_addr = stop;
+ etm_filter->type = ETM_ADDR_TYPE_RANGE;
+ } else {
+ if (filter->filter == 1) {
+ etm_filter->start_addr = start;
+ etm_filter->type = ETM_ADDR_TYPE_START;
+ } else {
+ etm_filter->stop_addr = stop;
+ etm_filter->type = ETM_ADDR_TYPE_STOP;
+ }
+ }
+ i++;
+ }
+
+ filters->nr_filters = i;
+}
+
int etm_perf_symlink(struct coresight_device *csdev, bool link)
{
char entry[sizeof("cpu9999999")];
{
int ret;
- etm_pmu.capabilities = PERF_PMU_CAP_EXCLUSIVE;
-
- etm_pmu.attr_groups = etm_pmu_attr_groups;
- etm_pmu.task_ctx_nr = perf_sw_context;
- etm_pmu.read = etm_event_read;
- etm_pmu.event_init = etm_event_init;
- etm_pmu.setup_aux = etm_setup_aux;
- etm_pmu.free_aux = etm_free_aux;
- etm_pmu.start = etm_event_start;
- etm_pmu.stop = etm_event_stop;
- etm_pmu.add = etm_event_add;
- etm_pmu.del = etm_event_del;
+ etm_pmu.capabilities = PERF_PMU_CAP_EXCLUSIVE;
+
+ etm_pmu.attr_groups = etm_pmu_attr_groups;
+ etm_pmu.task_ctx_nr = perf_sw_context;
+ etm_pmu.read = etm_event_read;
+ etm_pmu.event_init = etm_event_init;
+ etm_pmu.setup_aux = etm_setup_aux;
+ etm_pmu.free_aux = etm_free_aux;
+ etm_pmu.start = etm_event_start;
+ etm_pmu.stop = etm_event_stop;
+ etm_pmu.add = etm_event_add;
+ etm_pmu.del = etm_event_del;
+ etm_pmu.addr_filters_sync = etm_addr_filters_sync;
+ etm_pmu.addr_filters_validate = etm_addr_filters_validate;
+ etm_pmu.nr_addr_filters = ETM_ADDR_CMP_MAX;
ret = perf_pmu_register(&etm_pmu, CORESIGHT_ETM_PMU_NAME, -1);
if (ret == 0)
#ifndef _CORESIGHT_ETM_PERF_H
#define _CORESIGHT_ETM_PERF_H
+#include "coresight-priv.h"
+
struct coresight_device;
+/*
+ * In both ETMv3 and v4 the maximum number of address comparator implentable
+ * is 8. The actual number is implementation specific and will be checked
+ * when filters are applied.
+ */
+#define ETM_ADDR_CMP_MAX 8
+
+/**
+ * struct etm_filter - single instruction range or start/stop configuration.
+ * @start_addr: The address to start tracing on.
+ * @stop_addr: The address to stop tracing on.
+ * @type: Is this a range or start/stop filter.
+ */
+struct etm_filter {
+ unsigned long start_addr;
+ unsigned long stop_addr;
+ enum etm_addr_type type;
+};
+
+/**
+ * struct etm_filters - set of filters for a session
+ * @etm_filter: All the filters for this session.
+ * @nr_filters: Number of filters
+ * @ssstatus: Status of the start/stop logic.
+ */
+struct etm_filters {
+ struct etm_filter etm_filter[ETM_ADDR_CMP_MAX];
+ unsigned int nr_filters;
+ bool ssstatus;
+};
+
+
#ifdef CONFIG_CORESIGHT
int etm_perf_symlink(struct coresight_device *csdev, bool link);
struct etm_config config;
};
-enum etm_addr_type {
- ETM_ADDR_TYPE_NONE,
- ETM_ADDR_TYPE_SINGLE,
- ETM_ADDR_TYPE_RANGE,
- ETM_ADDR_TYPE_START,
- ETM_ADDR_TYPE_STOP,
-};
-
static inline void etm_writel(struct etm_drvdata *drvdata,
u32 val, u32 off)
{
#include <linux/pm_runtime.h>
#include <linux/sysfs.h>
#include "coresight-etm.h"
+#include "coresight-priv.h"
static ssize_t nr_addr_cmp_show(struct device *dev,
struct device_attribute *attr, char *buf)
};
#define coresight_etm3x_simple_func(name, offset) \
- coresight_simple_func(struct etm_drvdata, name, offset)
+ coresight_simple_func(struct etm_drvdata, NULL, name, offset)
coresight_etm3x_simple_func(etmccr, ETMCCR);
coresight_etm3x_simple_func(etmccer, ETMCCER);
#define ETM3X_SUPPORTED_OPTIONS (ETMCR_CYC_ACC | ETMCR_TIMESTAMP_EN)
static int etm_parse_event_config(struct etm_drvdata *drvdata,
- struct perf_event_attr *attr)
+ struct perf_event *event)
{
struct etm_config *config = &drvdata->config;
+ struct perf_event_attr *attr = &event->attr;
if (!attr)
return -EINVAL;
}
static int etm_enable_perf(struct coresight_device *csdev,
- struct perf_event_attr *attr)
+ struct perf_event *event)
{
struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
return -EINVAL;
/* Configure the tracer based on the session's specifics */
- etm_parse_event_config(drvdata, attr);
+ etm_parse_event_config(drvdata, event);
/* And enable it */
etm_enable_hw(drvdata);
}
static int etm_enable(struct coresight_device *csdev,
- struct perf_event_attr *attr, u32 mode)
+ struct perf_event *event, u32 mode)
{
int ret;
u32 val;
ret = etm_enable_sysfs(csdev);
break;
case CS_MODE_PERF:
- ret = etm_enable_perf(csdev, attr);
+ ret = etm_enable_perf(csdev, event);
break;
default:
ret = -EINVAL;
dev_info(drvdata->dev, "ETM tracing disabled\n");
}
-static void etm_disable(struct coresight_device *csdev)
+static void etm_disable(struct coresight_device *csdev,
+ struct perf_event *event)
{
u32 mode;
struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
struct coresight_platform_data *pdata = NULL;
struct etm_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
etm_init_trace_id(drvdata);
etm_set_default(&drvdata->config);
- desc->type = CORESIGHT_DEV_TYPE_SOURCE;
- desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
- desc->ops = &etm_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- desc->groups = coresight_etm_groups;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_SOURCE;
+ desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
+ desc.ops = &etm_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_etm_groups;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto err_arch_supported;
.mask = 0x0003ffff,
.data = "ETM 3.3",
},
+ { /* ETM 3.5 - Cortex-A5 */
+ .id = 0x0003b955,
+ .mask = 0x0003ffff,
+ .data = "ETM 3.5",
+ },
{ /* ETM 3.5 */
.id = 0x0003b956,
.mask = 0x0003ffff,
#include <linux/pm_runtime.h>
#include <linux/sysfs.h>
#include "coresight-etm4x.h"
+#include "coresight-priv.h"
static int etm4_set_mode_exclude(struct etmv4_drvdata *drvdata, bool exclude)
{
NULL,
};
+struct etmv4_reg {
+ void __iomem *addr;
+ u32 data;
+};
+
+static void do_smp_cross_read(void *data)
+{
+ struct etmv4_reg *reg = data;
+
+ reg->data = readl_relaxed(reg->addr);
+}
+
+static u32 etmv4_cross_read(const struct device *dev, u32 offset)
+{
+ struct etmv4_drvdata *drvdata = dev_get_drvdata(dev);
+ struct etmv4_reg reg;
+
+ reg.addr = drvdata->base + offset;
+ /*
+ * smp cross call ensures the CPU will be powered up before
+ * accessing the ETMv4 trace core registers
+ */
+ smp_call_function_single(drvdata->cpu, do_smp_cross_read, ®, 1);
+ return reg.data;
+}
+
#define coresight_etm4x_simple_func(name, offset) \
- coresight_simple_func(struct etmv4_drvdata, name, offset)
+ coresight_simple_func(struct etmv4_drvdata, NULL, name, offset)
+
+#define coresight_etm4x_cross_read(name, offset) \
+ coresight_simple_func(struct etmv4_drvdata, etmv4_cross_read, \
+ name, offset)
-coresight_etm4x_simple_func(trcoslsr, TRCOSLSR);
coresight_etm4x_simple_func(trcpdcr, TRCPDCR);
coresight_etm4x_simple_func(trcpdsr, TRCPDSR);
coresight_etm4x_simple_func(trclsr, TRCLSR);
-coresight_etm4x_simple_func(trcconfig, TRCCONFIGR);
-coresight_etm4x_simple_func(trctraceid, TRCTRACEIDR);
coresight_etm4x_simple_func(trcauthstatus, TRCAUTHSTATUS);
coresight_etm4x_simple_func(trcdevid, TRCDEVID);
coresight_etm4x_simple_func(trcdevtype, TRCDEVTYPE);
coresight_etm4x_simple_func(trcpidr1, TRCPIDR1);
coresight_etm4x_simple_func(trcpidr2, TRCPIDR2);
coresight_etm4x_simple_func(trcpidr3, TRCPIDR3);
+coresight_etm4x_cross_read(trcoslsr, TRCOSLSR);
+coresight_etm4x_cross_read(trcconfig, TRCCONFIGR);
+coresight_etm4x_cross_read(trctraceid, TRCTRACEIDR);
static struct attribute *coresight_etmv4_mgmt_attrs[] = {
&dev_attr_trcoslsr.attr,
NULL,
};
-coresight_etm4x_simple_func(trcidr0, TRCIDR0);
-coresight_etm4x_simple_func(trcidr1, TRCIDR1);
-coresight_etm4x_simple_func(trcidr2, TRCIDR2);
-coresight_etm4x_simple_func(trcidr3, TRCIDR3);
-coresight_etm4x_simple_func(trcidr4, TRCIDR4);
-coresight_etm4x_simple_func(trcidr5, TRCIDR5);
+coresight_etm4x_cross_read(trcidr0, TRCIDR0);
+coresight_etm4x_cross_read(trcidr1, TRCIDR1);
+coresight_etm4x_cross_read(trcidr2, TRCIDR2);
+coresight_etm4x_cross_read(trcidr3, TRCIDR3);
+coresight_etm4x_cross_read(trcidr4, TRCIDR4);
+coresight_etm4x_cross_read(trcidr5, TRCIDR5);
/* trcidr[6,7] are reserved */
-coresight_etm4x_simple_func(trcidr8, TRCIDR8);
-coresight_etm4x_simple_func(trcidr9, TRCIDR9);
-coresight_etm4x_simple_func(trcidr10, TRCIDR10);
-coresight_etm4x_simple_func(trcidr11, TRCIDR11);
-coresight_etm4x_simple_func(trcidr12, TRCIDR12);
-coresight_etm4x_simple_func(trcidr13, TRCIDR13);
+coresight_etm4x_cross_read(trcidr8, TRCIDR8);
+coresight_etm4x_cross_read(trcidr9, TRCIDR9);
+coresight_etm4x_cross_read(trcidr10, TRCIDR10);
+coresight_etm4x_cross_read(trcidr11, TRCIDR11);
+coresight_etm4x_cross_read(trcidr12, TRCIDR12);
+coresight_etm4x_cross_read(trcidr13, TRCIDR13);
static struct attribute *coresight_etmv4_trcidr_attrs[] = {
&dev_attr_trcidr0.attr,
#include <linux/uaccess.h>
#include <linux/perf_event.h>
#include <linux/pm_runtime.h>
-#include <linux/perf_event.h>
#include <asm/sections.h>
#include <asm/local.h>
/* The number of ETMv4 currently registered */
static int etm4_count;
static struct etmv4_drvdata *etmdrvdata[NR_CPUS];
-static void etm4_set_default(struct etmv4_config *config);
+static void etm4_set_default_config(struct etmv4_config *config);
+static int etm4_set_event_filters(struct etmv4_drvdata *drvdata,
+ struct perf_event *event);
static enum cpuhp_state hp_online;
static int etm4_trace_id(struct coresight_device *csdev)
{
struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- unsigned long flags;
- int trace_id = -1;
-
- if (!local_read(&drvdata->mode))
- return drvdata->trcid;
-
- spin_lock_irqsave(&drvdata->spinlock, flags);
-
- CS_UNLOCK(drvdata->base);
- trace_id = readl_relaxed(drvdata->base + TRCTRACEIDR);
- trace_id &= ETM_TRACEID_MASK;
- CS_LOCK(drvdata->base);
- spin_unlock_irqrestore(&drvdata->spinlock, flags);
-
- return trace_id;
+ return drvdata->trcid;
}
static void etm4_enable_hw(void *info)
/* wait for TRCSTATR.IDLE to go up */
if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 1))
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- TRCSTATR);
+ "timeout while waiting for Idle Trace Status\n");
writel_relaxed(config->pe_sel, drvdata->base + TRCPROCSELR);
writel_relaxed(config->cfg, drvdata->base + TRCCONFIGR);
writel_relaxed(config->vmid_mask0, drvdata->base + TRCVMIDCCTLR0);
writel_relaxed(config->vmid_mask1, drvdata->base + TRCVMIDCCTLR1);
+ /*
+ * Request to keep the trace unit powered and also
+ * emulation of powerdown
+ */
+ writel_relaxed(readl_relaxed(drvdata->base + TRCPDCR) | TRCPDCR_PU,
+ drvdata->base + TRCPDCR);
+
/* Enable the trace unit */
writel_relaxed(1, drvdata->base + TRCPRGCTLR);
/* wait for TRCSTATR.IDLE to go back down to '0' */
if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 0))
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- TRCSTATR);
+ "timeout while waiting for Idle Trace Status\n");
CS_LOCK(drvdata->base);
}
static int etm4_parse_event_config(struct etmv4_drvdata *drvdata,
- struct perf_event_attr *attr)
+ struct perf_event *event)
{
+ int ret = 0;
struct etmv4_config *config = &drvdata->config;
+ struct perf_event_attr *attr = &event->attr;
- if (!attr)
- return -EINVAL;
+ if (!attr) {
+ ret = -EINVAL;
+ goto out;
+ }
/* Clear configuration from previous run */
memset(config, 0, sizeof(struct etmv4_config));
config->mode = ETM_MODE_EXCL_USER;
/* Always start from the default config */
- etm4_set_default(config);
+ etm4_set_default_config(config);
- /*
- * By default the tracers are configured to trace the whole address
- * range. Narrow the field only if requested by user space.
- */
- if (config->mode)
- etm4_config_trace_mode(config);
+ /* Configure filters specified on the perf cmd line, if any. */
+ ret = etm4_set_event_filters(drvdata, event);
+ if (ret)
+ goto out;
/* Go from generic option to ETMv4 specifics */
if (attr->config & BIT(ETM_OPT_CYCACC))
if (attr->config & BIT(ETM_OPT_TS))
config->cfg |= ETMv4_MODE_TIMESTAMP;
- return 0;
+out:
+ return ret;
}
static int etm4_enable_perf(struct coresight_device *csdev,
- struct perf_event_attr *attr)
+ struct perf_event *event)
{
+ int ret = 0;
struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
- if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id()))
- return -EINVAL;
+ if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id())) {
+ ret = -EINVAL;
+ goto out;
+ }
/* Configure the tracer based on the session's specifics */
- etm4_parse_event_config(drvdata, attr);
+ ret = etm4_parse_event_config(drvdata, event);
+ if (ret)
+ goto out;
/* And enable it */
etm4_enable_hw(drvdata);
- return 0;
+out:
+ return ret;
}
static int etm4_enable_sysfs(struct coresight_device *csdev)
}
static int etm4_enable(struct coresight_device *csdev,
- struct perf_event_attr *attr, u32 mode)
+ struct perf_event *event, u32 mode)
{
int ret;
u32 val;
ret = etm4_enable_sysfs(csdev);
break;
case CS_MODE_PERF:
- ret = etm4_enable_perf(csdev, attr);
+ ret = etm4_enable_perf(csdev, event);
break;
default:
ret = -EINVAL;
CS_UNLOCK(drvdata->base);
+ /* power can be removed from the trace unit now */
+ control = readl_relaxed(drvdata->base + TRCPDCR);
+ control &= ~TRCPDCR_PU;
+ writel_relaxed(control, drvdata->base + TRCPDCR);
+
control = readl_relaxed(drvdata->base + TRCPRGCTLR);
/* EN, bit[0] Trace unit enable bit */
dev_dbg(drvdata->dev, "cpu: %d disable smp call done\n", drvdata->cpu);
}
-static int etm4_disable_perf(struct coresight_device *csdev)
+static int etm4_disable_perf(struct coresight_device *csdev,
+ struct perf_event *event)
{
+ u32 control;
+ struct etm_filters *filters = event->hw.addr_filters;
struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
if (WARN_ON_ONCE(drvdata->cpu != smp_processor_id()))
return -EINVAL;
etm4_disable_hw(drvdata);
+
+ /*
+ * Check if the start/stop logic was active when the unit was stopped.
+ * That way we can re-enable the start/stop logic when the process is
+ * scheduled again. Configuration of the start/stop logic happens in
+ * function etm4_set_event_filters().
+ */
+ control = readl_relaxed(drvdata->base + TRCVICTLR);
+ /* TRCVICTLR::SSSTATUS, bit[9] */
+ filters->ssstatus = (control & BIT(9));
+
return 0;
}
dev_info(drvdata->dev, "ETM tracing disabled\n");
}
-static void etm4_disable(struct coresight_device *csdev)
+static void etm4_disable(struct coresight_device *csdev,
+ struct perf_event *event)
{
u32 mode;
struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
etm4_disable_sysfs(csdev);
break;
case CS_MODE_PERF:
- etm4_disable_perf(csdev);
+ etm4_disable_perf(csdev, event);
break;
}
CS_LOCK(drvdata->base);
}
-static void etm4_set_default(struct etmv4_config *config)
+static void etm4_set_default_config(struct etmv4_config *config)
{
- if (WARN_ON_ONCE(!config))
- return;
-
- /*
- * Make default initialisation trace everything
- *
- * Select the "always true" resource selector on the
- * "Enablign Event" line and configure address range comparator
- * '0' to trace all the possible address range. From there
- * configure the "include/exclude" engine to include address
- * range comparator '0'.
- */
-
/* disable all events tracing */
config->eventctrl0 = 0x0;
config->eventctrl1 = 0x0;
/* TRCVICTLR::EVENT = 0x01, select the always on logic */
config->vinst_ctrl |= BIT(0);
+}
+
+static u64 etm4_get_access_type(struct etmv4_config *config)
+{
+ u64 access_type = 0;
+
+ /*
+ * EXLEVEL_NS, bits[15:12]
+ * The Exception levels are:
+ * Bit[12] Exception level 0 - Application
+ * Bit[13] Exception level 1 - OS
+ * Bit[14] Exception level 2 - Hypervisor
+ * Bit[15] Never implemented
+ *
+ * Always stay away from hypervisor mode.
+ */
+ access_type = ETM_EXLEVEL_NS_HYP;
+
+ if (config->mode & ETM_MODE_EXCL_KERN)
+ access_type |= ETM_EXLEVEL_NS_OS;
+
+ if (config->mode & ETM_MODE_EXCL_USER)
+ access_type |= ETM_EXLEVEL_NS_APP;
+
+ /*
+ * EXLEVEL_S, bits[11:8], don't trace anything happening
+ * in secure state.
+ */
+ access_type |= (ETM_EXLEVEL_S_APP |
+ ETM_EXLEVEL_S_OS |
+ ETM_EXLEVEL_S_HYP);
+
+ return access_type;
+}
+
+static void etm4_set_comparator_filter(struct etmv4_config *config,
+ u64 start, u64 stop, int comparator)
+{
+ u64 access_type = etm4_get_access_type(config);
+
+ /* First half of default address comparator */
+ config->addr_val[comparator] = start;
+ config->addr_acc[comparator] = access_type;
+ config->addr_type[comparator] = ETM_ADDR_TYPE_RANGE;
+
+ /* Second half of default address comparator */
+ config->addr_val[comparator + 1] = stop;
+ config->addr_acc[comparator + 1] = access_type;
+ config->addr_type[comparator + 1] = ETM_ADDR_TYPE_RANGE;
+
+ /*
+ * Configure the ViewInst function to include this address range
+ * comparator.
+ *
+ * @comparator is divided by two since it is the index in the
+ * etmv4_config::addr_val array but register TRCVIIECTLR deals with
+ * address range comparator _pairs_.
+ *
+ * Therefore:
+ * index 0 -> compatator pair 0
+ * index 2 -> comparator pair 1
+ * index 4 -> comparator pair 2
+ * ...
+ * index 14 -> comparator pair 7
+ */
+ config->viiectlr |= BIT(comparator / 2);
+}
+
+static void etm4_set_start_stop_filter(struct etmv4_config *config,
+ u64 address, int comparator,
+ enum etm_addr_type type)
+{
+ int shift;
+ u64 access_type = etm4_get_access_type(config);
+
+ /* Configure the comparator */
+ config->addr_val[comparator] = address;
+ config->addr_acc[comparator] = access_type;
+ config->addr_type[comparator] = type;
+
+ /*
+ * Configure ViewInst Start-Stop control register.
+ * Addresses configured to start tracing go from bit 0 to n-1,
+ * while those configured to stop tracing from 16 to 16 + n-1.
+ */
+ shift = (type == ETM_ADDR_TYPE_START ? 0 : 16);
+ config->vissctlr |= BIT(shift + comparator);
+}
+
+static void etm4_set_default_filter(struct etmv4_config *config)
+{
+ u64 start, stop;
+
+ /*
+ * Configure address range comparator '0' to encompass all
+ * possible addresses.
+ */
+ start = 0x0;
+ stop = ~0x0;
+
+ etm4_set_comparator_filter(config, start, stop,
+ ETM_DEFAULT_ADDR_COMP);
/*
* TRCVICTLR::SSSTATUS == 1, the start-stop logic is
*/
config->vinst_ctrl |= BIT(9);
+ /* No start-stop filtering for ViewInst */
+ config->vissctlr = 0x0;
+}
+
+static void etm4_set_default(struct etmv4_config *config)
+{
+ if (WARN_ON_ONCE(!config))
+ return;
+
/*
- * Configure address range comparator '0' to encompass all
- * possible addresses.
+ * Make default initialisation trace everything
+ *
+ * Select the "always true" resource selector on the
+ * "Enablign Event" line and configure address range comparator
+ * '0' to trace all the possible address range. From there
+ * configure the "include/exclude" engine to include address
+ * range comparator '0'.
*/
+ etm4_set_default_config(config);
+ etm4_set_default_filter(config);
+}
- /* First half of default address comparator: start at address 0 */
- config->addr_val[ETM_DEFAULT_ADDR_COMP] = 0x0;
- /* trace instruction addresses */
- config->addr_acc[ETM_DEFAULT_ADDR_COMP] &= ~(BIT(0) | BIT(1));
- /* EXLEVEL_NS, bits[12:15], only trace application and kernel space */
- config->addr_acc[ETM_DEFAULT_ADDR_COMP] |= ETM_EXLEVEL_NS_HYP;
- /* EXLEVEL_S, bits[11:8], don't trace anything in secure state */
- config->addr_acc[ETM_DEFAULT_ADDR_COMP] |= (ETM_EXLEVEL_S_APP |
- ETM_EXLEVEL_S_OS |
- ETM_EXLEVEL_S_HYP);
- config->addr_type[ETM_DEFAULT_ADDR_COMP] = ETM_ADDR_TYPE_RANGE;
+static int etm4_get_next_comparator(struct etmv4_drvdata *drvdata, u32 type)
+{
+ int nr_comparator, index = 0;
+ struct etmv4_config *config = &drvdata->config;
/*
- * Second half of default address comparator: go all
- * the way to the top.
- */
- config->addr_val[ETM_DEFAULT_ADDR_COMP + 1] = ~0x0;
- /* trace instruction addresses */
- config->addr_acc[ETM_DEFAULT_ADDR_COMP + 1] &= ~(BIT(0) | BIT(1));
- /* Address comparator type must be equal for both halves */
- config->addr_acc[ETM_DEFAULT_ADDR_COMP + 1] =
- config->addr_acc[ETM_DEFAULT_ADDR_COMP];
- config->addr_type[ETM_DEFAULT_ADDR_COMP + 1] = ETM_ADDR_TYPE_RANGE;
+ * nr_addr_cmp holds the number of comparator _pair_, so time 2
+ * for the total number of comparators.
+ */
+ nr_comparator = drvdata->nr_addr_cmp * 2;
+
+ /* Go through the tally of comparators looking for a free one. */
+ while (index < nr_comparator) {
+ switch (type) {
+ case ETM_ADDR_TYPE_RANGE:
+ if (config->addr_type[index] == ETM_ADDR_TYPE_NONE &&
+ config->addr_type[index + 1] == ETM_ADDR_TYPE_NONE)
+ return index;
+
+ /* Address range comparators go in pairs */
+ index += 2;
+ break;
+ case ETM_ADDR_TYPE_START:
+ case ETM_ADDR_TYPE_STOP:
+ if (config->addr_type[index] == ETM_ADDR_TYPE_NONE)
+ return index;
+
+ /* Start/stop address can have odd indexes */
+ index += 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ /* If we are here all the comparators have been used. */
+ return -ENOSPC;
+}
+
+static int etm4_set_event_filters(struct etmv4_drvdata *drvdata,
+ struct perf_event *event)
+{
+ int i, comparator, ret = 0;
+ u64 address;
+ struct etmv4_config *config = &drvdata->config;
+ struct etm_filters *filters = event->hw.addr_filters;
+
+ if (!filters)
+ goto default_filter;
+
+ /* Sync events with what Perf got */
+ perf_event_addr_filters_sync(event);
/*
- * Configure the ViewInst function to filter on address range
- * comparator '0'.
+ * If there are no filters to deal with simply go ahead with
+ * the default filter, i.e the entire address range.
*/
- config->viiectlr = BIT(0);
+ if (!filters->nr_filters)
+ goto default_filter;
+
+ for (i = 0; i < filters->nr_filters; i++) {
+ struct etm_filter *filter = &filters->etm_filter[i];
+ enum etm_addr_type type = filter->type;
+
+ /* See if a comparator is free. */
+ comparator = etm4_get_next_comparator(drvdata, type);
+ if (comparator < 0) {
+ ret = comparator;
+ goto out;
+ }
+
+ switch (type) {
+ case ETM_ADDR_TYPE_RANGE:
+ etm4_set_comparator_filter(config,
+ filter->start_addr,
+ filter->stop_addr,
+ comparator);
+ /*
+ * TRCVICTLR::SSSTATUS == 1, the start-stop logic is
+ * in the started state
+ */
+ config->vinst_ctrl |= BIT(9);
+
+ /* No start-stop filtering for ViewInst */
+ config->vissctlr = 0x0;
+ break;
+ case ETM_ADDR_TYPE_START:
+ case ETM_ADDR_TYPE_STOP:
+ /* Get the right start or stop address */
+ address = (type == ETM_ADDR_TYPE_START ?
+ filter->start_addr :
+ filter->stop_addr);
+
+ /* Configure comparator */
+ etm4_set_start_stop_filter(config, address,
+ comparator, type);
+
+ /*
+ * If filters::ssstatus == 1, trace acquisition was
+ * started but the process was yanked away before the
+ * the stop address was hit. As such the start/stop
+ * logic needs to be re-started so that tracing can
+ * resume where it left.
+ *
+ * The start/stop logic status when a process is
+ * scheduled out is checked in function
+ * etm4_disable_perf().
+ */
+ if (filters->ssstatus)
+ config->vinst_ctrl |= BIT(9);
+
+ /* No include/exclude filtering for ViewInst */
+ config->viiectlr = 0x0;
+ break;
+ default:
+ ret = -EINVAL;
+ goto out;
+ }
+ }
- /* no start-stop filtering for ViewInst */
- config->vissctlr = 0x0;
+ goto out;
+
+
+default_filter:
+ etm4_set_default_filter(config);
+
+out:
+ return ret;
}
void etm4_config_trace_mode(struct etmv4_config *config)
struct coresight_platform_data *pdata = NULL;
struct etmv4_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
etm4_init_trace_id(drvdata);
etm4_set_default(&drvdata->config);
- desc->type = CORESIGHT_DEV_TYPE_SOURCE;
- desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
- desc->ops = &etm4_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- desc->groups = coresight_etmv4_groups;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_SOURCE;
+ desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
+ desc.ops = &etm4_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_etmv4_groups;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto err_arch_supported;
}
static struct amba_id etm4_ids[] = {
- { /* ETM 4.0 - Qualcomm */
- .id = 0x0003b95d,
- .mask = 0x0003ffff,
+ { /* ETM 4.0 - Cortex-A53 */
+ .id = 0x000bb95d,
+ .mask = 0x000fffff,
.data = "ETM 4.0",
},
- { /* ETM 4.0 - Juno board */
+ { /* ETM 4.0 - Cortex-A57 */
.id = 0x000bb95e,
.mask = 0x000fffff,
.data = "ETM 4.0",
#define TRCSTATR_IDLE_BIT 0
#define ETM_DEFAULT_ADDR_COMP 0
+/* PowerDown Control Register bits */
+#define TRCPDCR_PU BIT(3)
+
/* secure state access levels */
#define ETM_EXLEVEL_S_APP BIT(8)
#define ETM_EXLEVEL_S_OS BIT(9)
ETM_CTX_CTXID_VMID,
};
-enum etm_addr_type {
- ETM_ADDR_TYPE_NONE,
- ETM_ADDR_TYPE_SINGLE,
- ETM_ADDR_TYPE_RANGE,
- ETM_ADDR_TYPE_START,
- ETM_ADDR_TYPE_STOP,
-};
-
extern const struct attribute_group *coresight_etmv4_groups[];
void etm4_config_trace_mode(struct etmv4_config *config);
#endif
struct coresight_platform_data *pdata = NULL;
struct funnel_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
if (np) {
drvdata->base = base;
pm_runtime_put(&adev->dev);
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
- desc->type = CORESIGHT_DEV_TYPE_LINK;
- desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
- desc->ops = &funnel_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- desc->groups = coresight_funnel_groups;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_LINK;
+ desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_MERG;
+ desc.ops = &funnel_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_funnel_groups;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev))
return PTR_ERR(drvdata->csdev);
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/coresight.h>
+#include <linux/pm_runtime.h>
/*
* Coresight management registers (0xf00-0xfcc)
#define ETM_MODE_EXCL_KERN BIT(30)
#define ETM_MODE_EXCL_USER BIT(31)
-#define coresight_simple_func(type, name, offset) \
+typedef u32 (*coresight_read_fn)(const struct device *, u32 offset);
+#define coresight_simple_func(type, func, name, offset) \
static ssize_t name##_show(struct device *_dev, \
struct device_attribute *attr, char *buf) \
{ \
type *drvdata = dev_get_drvdata(_dev->parent); \
- return scnprintf(buf, PAGE_SIZE, "0x%x\n", \
- readl_relaxed(drvdata->base + offset)); \
+ coresight_read_fn fn = func; \
+ u32 val; \
+ pm_runtime_get_sync(_dev->parent); \
+ if (fn) \
+ val = fn(_dev->parent, offset); \
+ else \
+ val = readl_relaxed(drvdata->base + offset); \
+ pm_runtime_put_sync(_dev->parent); \
+ return scnprintf(buf, PAGE_SIZE, "0x%x\n", val); \
} \
static DEVICE_ATTR_RO(name)
+enum etm_addr_type {
+ ETM_ADDR_TYPE_NONE,
+ ETM_ADDR_TYPE_SINGLE,
+ ETM_ADDR_TYPE_RANGE,
+ ETM_ADDR_TYPE_START,
+ ETM_ADDR_TYPE_STOP,
+};
+
enum cs_mode {
CS_MODE_DISABLED,
CS_MODE_SYSFS,
struct resource *res = &adev->res;
struct coresight_platform_data *pdata = NULL;
struct replicator_state *drvdata;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
void __iomem *base;
dev_set_drvdata(dev, drvdata);
pm_runtime_put(&adev->dev);
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
- desc->type = CORESIGHT_DEV_TYPE_LINK;
- desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
- desc->ops = &replicator_cs_ops;
- desc->pdata = adev->dev.platform_data;
- desc->dev = &adev->dev;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_LINK;
+ desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
+ desc.ops = &replicator_cs_ops;
+ desc.pdata = adev->dev.platform_data;
+ desc.dev = &adev->dev;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev))
return PTR_ERR(drvdata->csdev);
struct device *dev = &pdev->dev;
struct coresight_platform_data *pdata = NULL;
struct replicator_drvdata *drvdata;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = pdev->dev.of_node;
if (np) {
pm_runtime_enable(&pdev->dev);
platform_set_drvdata(pdev, drvdata);
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc) {
- ret = -ENOMEM;
- goto out_disable_pm;
- }
-
- desc->type = CORESIGHT_DEV_TYPE_LINK;
- desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
- desc->ops = &replicator_cs_ops;
- desc->pdata = pdev->dev.platform_data;
- desc->dev = &pdev->dev;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_LINK;
+ desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
+ desc.ops = &replicator_cs_ops;
+ desc.pdata = pdev->dev.platform_data;
+ desc.dev = &pdev->dev;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto out_disable_pm;
/**
* struct channel_space - central management entity for extended ports
* @base: memory mapped base address where channels start.
+ * @phys: physical base address of channel region.
* @guaraneed: is the channel delivery guaranteed.
*/
struct channel_space {
void __iomem *base;
+ phys_addr_t phys;
unsigned long *guaranteed;
};
}
static int stm_enable(struct coresight_device *csdev,
- struct perf_event_attr *attr, u32 mode)
+ struct perf_event *event, u32 mode)
{
u32 val;
struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
stm_hwevent_disable_hw(drvdata);
}
-static void stm_disable(struct coresight_device *csdev)
+static void stm_disable(struct coresight_device *csdev,
+ struct perf_event *event)
{
struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
if (!drvdata || !drvdata->csdev)
return;
- stm_disable(drvdata->csdev);
+ stm_disable(drvdata->csdev, NULL);
+}
+
+static phys_addr_t
+stm_mmio_addr(struct stm_data *stm_data, unsigned int master,
+ unsigned int channel, unsigned int nr_chans)
+{
+ struct stm_drvdata *drvdata = container_of(stm_data,
+ struct stm_drvdata, stm);
+ phys_addr_t addr;
+
+ addr = drvdata->chs.phys + channel * BYTES_PER_CHANNEL;
+
+ if (offset_in_page(addr) ||
+ offset_in_page(nr_chans * BYTES_PER_CHANNEL))
+ return 0;
+
+ return addr;
}
static long stm_generic_set_options(struct stm_data *stm_data,
static DEVICE_ATTR_RW(traceid);
#define coresight_stm_simple_func(name, offset) \
- coresight_simple_func(struct stm_drvdata, name, offset)
+ coresight_simple_func(struct stm_drvdata, NULL, name, offset)
coresight_stm_simple_func(tcsr, STMTCSR);
coresight_stm_simple_func(tsfreqr, STMTSFREQR);
drvdata->stm.sw_end = 1;
drvdata->stm.hw_override = true;
drvdata->stm.sw_nchannels = drvdata->numsp;
+ drvdata->stm.sw_mmiosz = BYTES_PER_CHANNEL;
drvdata->stm.packet = stm_generic_packet;
+ drvdata->stm.mmio_addr = stm_mmio_addr;
drvdata->stm.link = stm_generic_link;
drvdata->stm.unlink = stm_generic_unlink;
drvdata->stm.set_options = stm_generic_set_options;
struct resource *res = &adev->res;
struct resource ch_res;
size_t res_size, bitmap_size;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
if (np) {
ret = stm_get_resource_byname(np, "stm-stimulus-base", &ch_res);
if (ret)
return ret;
+ drvdata->chs.phys = ch_res.start;
base = devm_ioremap_resource(dev, &ch_res);
if (IS_ERR(base))
return -EPROBE_DEFER;
}
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc) {
- ret = -ENOMEM;
- goto stm_unregister;
- }
-
- desc->type = CORESIGHT_DEV_TYPE_SOURCE;
- desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE;
- desc->ops = &stm_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- desc->groups = coresight_stm_groups;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_SOURCE;
+ desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE;
+ desc.ops = &stm_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_stm_groups;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto stm_unregister;
#include "coresight-priv.h"
#include "coresight-tmc.h"
-void tmc_etb_enable_hw(struct tmc_drvdata *drvdata)
+static void tmc_etb_enable_hw(struct tmc_drvdata *drvdata)
{
CS_UNLOCK(drvdata->base);
int i;
bufp = drvdata->buf;
+ drvdata->len = 0;
while (1) {
for (i = 0; i < drvdata->memwidth; i++) {
read_data = readl_relaxed(drvdata->base + TMC_RRD);
return;
memcpy(bufp, &read_data, 4);
bufp += 4;
+ drvdata->len += 4;
}
}
}
spin_unlock_irqrestore(&drvdata->spinlock, flags);
/* Free memory outside the spinlock if need be */
- if (!used && buf)
+ if (!used)
kfree(buf);
if (!ret)
#include "coresight-priv.h"
#include "coresight-tmc.h"
-void tmc_etr_enable_hw(struct tmc_drvdata *drvdata)
+static void tmc_etr_enable_hw(struct tmc_drvdata *drvdata)
{
u32 axictl;
rwp = readl_relaxed(drvdata->base + TMC_RWP);
val = readl_relaxed(drvdata->base + TMC_STS);
- /* How much memory do we still have */
- if (val & BIT(0))
+ /*
+ * Adjust the buffer to point to the beginning of the trace data
+ * and update the available trace data.
+ */
+ if (val & TMC_STS_FULL) {
drvdata->buf = drvdata->vaddr + rwp - drvdata->paddr;
- else
+ drvdata->len = drvdata->size;
+ } else {
drvdata->buf = drvdata->vaddr;
+ drvdata->len = rwp - drvdata->paddr;
+ }
}
static void tmc_etr_disable_hw(struct tmc_drvdata *drvdata)
if (coresight_timeout(drvdata->base,
TMC_STS, TMC_STS_TMCREADY_BIT, 1)) {
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- TMC_STS);
+ "timeout while waiting for TMC to be Ready\n");
}
}
if (coresight_timeout(drvdata->base,
TMC_FFCR, TMC_FFCR_FLUSHMAN_BIT, 0)) {
dev_err(drvdata->dev,
- "timeout observed when probing at offset %#x\n",
- TMC_FFCR);
+ "timeout while waiting for completion of Manual Flush\n");
}
tmc_wait_for_tmcready(drvdata);
struct tmc_drvdata, miscdev);
char *bufp = drvdata->buf + *ppos;
- if (*ppos + len > drvdata->size)
- len = drvdata->size - *ppos;
+ if (*ppos + len > drvdata->len)
+ len = drvdata->len - *ppos;
if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) {
if (bufp == (char *)(drvdata->vaddr + drvdata->size))
*ppos += len;
dev_dbg(drvdata->dev, "%s: %zu bytes copied, %d bytes left\n",
- __func__, len, (int)(drvdata->size - *ppos));
+ __func__, len, (int)(drvdata->len - *ppos));
return len;
}
}
#define coresight_tmc_simple_func(name, offset) \
- coresight_simple_func(struct tmc_drvdata, name, offset)
+ coresight_simple_func(struct tmc_drvdata, NULL, name, offset)
coresight_tmc_simple_func(rsz, TMC_RSZ);
coresight_tmc_simple_func(sts, TMC_STS);
NULL,
};
-ssize_t trigger_cntr_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t trigger_cntr_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val = drvdata->trigger_cntr;
struct coresight_platform_data *pdata = NULL;
struct tmc_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
if (np) {
pdata = of_get_coresight_platform_data(dev, np);
- if (IS_ERR(pdata))
- return PTR_ERR(pdata);
+ if (IS_ERR(pdata)) {
+ ret = PTR_ERR(pdata);
+ goto out;
+ }
adev->dev.platform_data = pdata;
}
+ ret = -ENOMEM;
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
- return -ENOMEM;
+ goto out;
drvdata->dev = &adev->dev;
dev_set_drvdata(dev, drvdata);
/* Validity for the resource is already checked by the AMBA core */
base = devm_ioremap_resource(dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
+ if (IS_ERR(base)) {
+ ret = PTR_ERR(base);
+ goto out;
+ }
drvdata->base = base;
pm_runtime_put(&adev->dev);
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc) {
- ret = -ENOMEM;
- goto err_devm_kzalloc;
- }
-
- desc->pdata = pdata;
- desc->dev = dev;
- desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
- desc->groups = coresight_tmc_groups;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ desc.groups = coresight_tmc_groups;
if (drvdata->config_type == TMC_CONFIG_TYPE_ETB) {
- desc->type = CORESIGHT_DEV_TYPE_SINK;
- desc->ops = &tmc_etb_cs_ops;
+ desc.type = CORESIGHT_DEV_TYPE_SINK;
+ desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
+ desc.ops = &tmc_etb_cs_ops;
} else if (drvdata->config_type == TMC_CONFIG_TYPE_ETR) {
- desc->type = CORESIGHT_DEV_TYPE_SINK;
- desc->ops = &tmc_etr_cs_ops;
+ desc.type = CORESIGHT_DEV_TYPE_SINK;
+ desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_BUFFER;
+ desc.ops = &tmc_etr_cs_ops;
} else {
- desc->type = CORESIGHT_DEV_TYPE_LINKSINK;
- desc->subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_FIFO;
- desc->ops = &tmc_etf_cs_ops;
+ desc.type = CORESIGHT_DEV_TYPE_LINKSINK;
+ desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_FIFO;
+ desc.ops = &tmc_etf_cs_ops;
}
- drvdata->csdev = coresight_register(desc);
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
- goto err_devm_kzalloc;
+ goto out;
}
drvdata->miscdev.name = pdata->name;
drvdata->miscdev.fops = &tmc_fops;
ret = misc_register(&drvdata->miscdev);
if (ret)
- goto err_misc_register;
-
- return 0;
-
-err_misc_register:
- coresight_unregister(drvdata->csdev);
-err_devm_kzalloc:
- if (drvdata->config_type == TMC_CONFIG_TYPE_ETR)
- dma_free_coherent(dev, drvdata->size,
- drvdata->vaddr, drvdata->paddr);
+ coresight_unregister(drvdata->csdev);
+out:
return ret;
}
* @buf: area of memory where trace data get sent.
* @paddr: DMA start location in RAM.
* @vaddr: virtual representation of @paddr.
- * @size: @buf size.
+ * @size: trace buffer size.
+ * @len: size of the available trace.
* @mode: how this TMC is being used.
* @config_type: TMC variant, must be of type @tmc_config_type.
* @memwidth: width of the memory interface databus, in bytes.
dma_addr_t paddr;
void __iomem *vaddr;
u32 size;
+ u32 len;
local_t mode;
enum tmc_config_type config_type;
enum tmc_mem_intf_width memwidth;
struct coresight_platform_data *pdata = NULL;
struct tpiu_drvdata *drvdata;
struct resource *res = &adev->res;
- struct coresight_desc *desc;
+ struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
if (np) {
pm_runtime_put(&adev->dev);
- desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
- desc->type = CORESIGHT_DEV_TYPE_SINK;
- desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_PORT;
- desc->ops = &tpiu_cs_ops;
- desc->pdata = pdata;
- desc->dev = dev;
- drvdata->csdev = coresight_register(desc);
+ desc.type = CORESIGHT_DEV_TYPE_SINK;
+ desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_PORT;
+ desc.ops = &tpiu_cs_ops;
+ desc.pdata = pdata;
+ desc.dev = dev;
+ drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev))
return PTR_ERR(drvdata->csdev);
{
if (atomic_dec_return(csdev->refcnt) == 0) {
if (source_ops(csdev)->disable) {
- source_ops(csdev)->disable(csdev);
+ source_ops(csdev)->disable(csdev, NULL);
csdev->enable = false;
}
}
path = kzalloc(sizeof(struct list_head), GFP_KERNEL);
if (!path)
- return NULL;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(path);
/* We have found at least one orphan connection */
if (conn->child_dev == NULL) {
/* Does it match this newly added device? */
- if (!strcmp(dev_name(&csdev->dev), conn->child_name)) {
+ if (conn->child_name &&
+ !strcmp(dev_name(&csdev->dev), conn->child_name)) {
conn->child_dev = csdev;
} else {
/* This component still has an orphan */
int nr_refcnts = 1;
atomic_t *refcnts = NULL;
struct coresight_device *csdev;
- struct coresight_connection *conns;
+ struct coresight_connection *conns = NULL;
csdev = kzalloc(sizeof(*csdev), GFP_KERNEL);
if (!csdev) {
csdev->nr_inport = desc->pdata->nr_inport;
csdev->nr_outport = desc->pdata->nr_outport;
- conns = kcalloc(csdev->nr_outport, sizeof(*conns), GFP_KERNEL);
- if (!conns) {
- ret = -ENOMEM;
- goto err_kzalloc_conns;
- }
- for (i = 0; i < csdev->nr_outport; i++) {
- conns[i].outport = desc->pdata->outports[i];
- conns[i].child_name = desc->pdata->child_names[i];
- conns[i].child_port = desc->pdata->child_ports[i];
+ /* Initialise connections if there is at least one outport */
+ if (csdev->nr_outport) {
+ conns = kcalloc(csdev->nr_outport, sizeof(*conns), GFP_KERNEL);
+ if (!conns) {
+ ret = -ENOMEM;
+ goto err_kzalloc_conns;
+ }
+
+ for (i = 0; i < csdev->nr_outport; i++) {
+ conns[i].outport = desc->pdata->outports[i];
+ conns[i].child_name = desc->pdata->child_names[i];
+ conns[i].child_port = desc->pdata->child_ports[i];
+ }
}
csdev->conns = conns;
rdev = of_coresight_get_endpoint_device(rparent);
if (!rdev)
- continue;
+ return ERR_PTR(-EPROBE_DEFER);
pdata->child_names[i] = dev_name(rdev);
pdata->child_ports[i] = rendpoint.id;
break;
}
}
+ of_node_put(dn);
return pdata;
}
config BMP280
tristate "Bosch Sensortec BMP180/BMP280 pressure sensor I2C driver"
depends on (I2C || SPI_MASTER)
- depends on !(BMP085_I2C=y || BMP085_I2C=m)
- depends on !(BMP085_SPI=y || BMP085_SPI=m)
select REGMAP
select BMP280_I2C if (I2C)
select BMP280_SPI if (SPI_MASTER)
.minor = UINPUT_MINOR,
.name = UINPUT_NAME,
};
+module_misc_device(uinput_misc);
+
MODULE_ALIAS_MISCDEV(UINPUT_MINOR);
MODULE_ALIAS("devname:" UINPUT_NAME);
-static int __init uinput_init(void)
-{
- return misc_register(&uinput_misc);
-}
-
-static void __exit uinput_exit(void)
-{
- misc_deregister(&uinput_misc);
-}
-
MODULE_AUTHOR("Aristeu Sergio Rozanski Filho");
MODULE_DESCRIPTION("User level driver support for input subsystem");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.3");
-
-module_init(uinput_init);
-module_exit(uinput_exit);
.nodename = "lightnvm/control",
.fops = &_ctl_fops,
};
+module_misc_device(_nvm_misc);
MODULE_ALIAS_MISCDEV(MISC_DYNAMIC_MINOR);
-static int __init nvm_mod_init(void)
-{
- int ret;
-
- ret = misc_register(&_nvm_misc);
- if (ret)
- pr_err("nvm: misc_register failed for control device");
-
- return ret;
-}
-
-static void __exit nvm_mod_exit(void)
-{
- misc_deregister(&_nvm_misc);
-}
-
MODULE_AUTHOR("Matias Bjorling <m@bjorling.me>");
MODULE_LICENSE("GPL v2");
MODULE_VERSION("0.1");
-module_init(nvm_mod_init);
-module_exit(nvm_mod_exit);
If build as a module, the module is called mcb-pci.ko
+config MCB_LPC
+ tristate "LPC (non PCI) based MCB carrier"
+ default n
+ help
+
+ This is a MCB carrier on a LPC or non PCI device.
+
+ If build as a module, the module is called mcb-lpc.ko
+
endif # MCB
mcb-y += mcb-parse.o
obj-$(CONFIG_MCB_PCI) += mcb-pci.o
+obj-$(CONFIG_MCB_LPC) += mcb-lpc.o
if (!dev)
return NULL;
- INIT_LIST_HEAD(&dev->bus_list);
dev->bus = bus;
return dev;
return 0;
}
-static int __mcb_bus_add_child(struct device *dev, void *data)
-{
- struct mcb_device *mdev = to_mcb_device(dev);
- struct mcb_bus *child;
-
- BUG_ON(!mdev->is_added);
- child = mdev->subordinate;
-
- if (child)
- mcb_bus_add_devices(child);
-
- return 0;
-}
-
/**
* mcb_bus_add_devices() - Add devices in the bus' internal device list
* @bus: The @mcb_bus we add the devices
void mcb_bus_add_devices(const struct mcb_bus *bus)
{
bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_devices);
- bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_child);
-
}
EXPORT_SYMBOL_GPL(mcb_bus_add_devices);
u32 size;
} __packed;
+struct chameleon_bar {
+ u32 addr;
+ u32 size;
+};
+
+#define BAR_CNT(x) ((x) & 0x07)
+#define CHAMELEON_BAR_MAX 6
+#define BAR_DESC_SIZE(x) ((x) * sizeof(struct chameleon_bar) + sizeof(__le32))
+
int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
void __iomem *base);
--- /dev/null
+/*
+ * MEN Chameleon Bus.
+ *
+ * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
+ * Author: Andreas Werner <andreas.werner@men.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/mcb.h>
+#include <linux/io.h>
+#include "mcb-internal.h"
+
+struct priv {
+ struct mcb_bus *bus;
+ struct resource *mem;
+ void __iomem *base;
+};
+
+static int mcb_lpc_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct priv *priv;
+ int ret = 0;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!priv->mem) {
+ dev_err(&pdev->dev, "No Memory resource\n");
+ return -ENODEV;
+ }
+
+ res = devm_request_mem_region(&pdev->dev, priv->mem->start,
+ resource_size(priv->mem),
+ KBUILD_MODNAME);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to request IO memory\n");
+ return -EBUSY;
+ }
+
+ priv->base = devm_ioremap(&pdev->dev, priv->mem->start,
+ resource_size(priv->mem));
+ if (!priv->base) {
+ dev_err(&pdev->dev, "Cannot ioremap\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ priv->bus = mcb_alloc_bus(&pdev->dev);
+ if (IS_ERR(priv->bus))
+ return PTR_ERR(priv->bus);
+
+ ret = chameleon_parse_cells(priv->bus, priv->mem->start, priv->base);
+ if (ret < 0) {
+ mcb_release_bus(priv->bus);
+ return ret;
+ }
+
+ dev_dbg(&pdev->dev, "Found %d cells\n", ret);
+
+ mcb_bus_add_devices(priv->bus);
+
+ return 0;
+
+}
+
+static int mcb_lpc_remove(struct platform_device *pdev)
+{
+ struct priv *priv = platform_get_drvdata(pdev);
+
+ mcb_release_bus(priv->bus);
+
+ return 0;
+}
+
+static struct platform_device *mcb_lpc_pdev;
+
+static int mcb_lpc_create_platform_device(const struct dmi_system_id *id)
+{
+ struct resource *res = id->driver_data;
+ int ret;
+
+ mcb_lpc_pdev = platform_device_alloc("mcb-lpc", -1);
+ if (!mcb_lpc_pdev)
+ return -ENOMEM;
+
+ ret = platform_device_add_resources(mcb_lpc_pdev, res, 1);
+ if (ret)
+ goto out_put;
+
+ ret = platform_device_add(mcb_lpc_pdev);
+ if (ret)
+ goto out_put;
+
+ return 0;
+
+out_put:
+ platform_device_put(mcb_lpc_pdev);
+ return ret;
+}
+
+static struct resource sc24_fpga_resource = {
+ .start = 0xe000e000,
+ .end = 0xe000e000 + CHAM_HEADER_SIZE,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_driver mcb_lpc_driver = {
+ .driver = {
+ .name = "mcb-lpc",
+ },
+ .probe = mcb_lpc_probe,
+ .remove = mcb_lpc_remove,
+};
+
+static const struct dmi_system_id mcb_lpc_dmi_table[] = {
+ {
+ .ident = "SC24",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "MEN"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "14SC24"),
+ },
+ .driver_data = (void *)&sc24_fpga_resource,
+ .callback = mcb_lpc_create_platform_device,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(dmi, mcb_lpc_dmi_table);
+
+static int __init mcb_lpc_init(void)
+{
+ if (!dmi_check_system(mcb_lpc_dmi_table))
+ return -ENODEV;
+
+ return platform_driver_register(&mcb_lpc_driver);
+}
+
+static void __exit mcb_lpc_exit(void)
+{
+ platform_device_unregister(mcb_lpc_pdev);
+ platform_driver_unregister(&mcb_lpc_driver);
+}
+
+module_init(mcb_lpc_init);
+module_exit(mcb_lpc_exit);
+
+MODULE_AUTHOR("Andreas Werner <andreas.werner@men.de>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MCB over LPC support");
}
static int chameleon_parse_bdd(struct mcb_bus *bus,
- phys_addr_t mapbase,
+ struct chameleon_bar *cb,
void __iomem *base)
{
return 0;
}
static int chameleon_parse_gdd(struct mcb_bus *bus,
- phys_addr_t mapbase,
- void __iomem *base)
+ struct chameleon_bar *cb,
+ void __iomem *base, int bar_count)
{
struct chameleon_gdd __iomem *gdd =
(struct chameleon_gdd __iomem *) base;
struct mcb_device *mdev;
+ u32 dev_mapbase;
u32 offset;
u32 size;
int ret;
mdev->group = GDD_GRP(reg2);
mdev->inst = GDD_INS(reg2);
+ /*
+ * If the BAR is missing, dev_mapbase is zero, or if the
+ * device is IO mapped we just print a warning and go on with the
+ * next device, instead of completely stop the gdd parser
+ */
+ if (mdev->bar > bar_count - 1) {
+ pr_info("No BAR for 16z%03d\n", mdev->id);
+ ret = 0;
+ goto err;
+ }
+
+ dev_mapbase = cb[mdev->bar].addr;
+ if (!dev_mapbase) {
+ pr_info("BAR not assigned for 16z%03d\n", mdev->id);
+ ret = 0;
+ goto err;
+ }
+
+ if (dev_mapbase & 0x01) {
+ pr_info("IO mapped Device (16z%03d) not yet supported\n",
+ mdev->id);
+ ret = 0;
+ goto err;
+ }
+
pr_debug("Found a 16z%03d\n", mdev->id);
mdev->irq.start = GDD_IRQ(reg1);
mdev->irq.end = GDD_IRQ(reg1);
mdev->irq.flags = IORESOURCE_IRQ;
- mdev->mem.start = mapbase + offset;
+ mdev->mem.start = dev_mapbase + offset;
+
mdev->mem.end = mdev->mem.start + size - 1;
mdev->mem.flags = IORESOURCE_MEM;
return ret;
}
+static void chameleon_parse_bar(void __iomem *base,
+ struct chameleon_bar *cb, int bar_count)
+{
+ char __iomem *p = base;
+ int i;
+
+ /* skip reg1 */
+ p += sizeof(__le32);
+
+ for (i = 0; i < bar_count; i++) {
+ cb[i].addr = readl(p);
+ cb[i].size = readl(p + 4);
+
+ p += sizeof(struct chameleon_bar);
+ }
+}
+
+static int chameleon_get_bar(char __iomem **base, phys_addr_t mapbase,
+ struct chameleon_bar **cb)
+{
+ struct chameleon_bar *c;
+ int bar_count;
+ __le32 reg;
+ u32 dtype;
+
+ /*
+ * For those devices which are not connected
+ * to the PCI Bus (e.g. LPC) there is a bar
+ * descriptor located directly after the
+ * chameleon header. This header is comparable
+ * to a PCI header.
+ */
+ dtype = get_next_dtype(*base);
+ if (dtype == CHAMELEON_DTYPE_BAR) {
+ reg = readl(*base);
+
+ bar_count = BAR_CNT(reg);
+ if (bar_count <= 0 && bar_count > CHAMELEON_BAR_MAX)
+ return -ENODEV;
+
+ c = kcalloc(bar_count, sizeof(struct chameleon_bar),
+ GFP_KERNEL);
+ if (!c)
+ return -ENOMEM;
+
+ chameleon_parse_bar(*base, c, bar_count);
+ *base += BAR_DESC_SIZE(bar_count);
+ } else {
+ c = kzalloc(sizeof(struct chameleon_bar), GFP_KERNEL);
+ if (!c)
+ return -ENOMEM;
+
+ bar_count = 1;
+ c->addr = mapbase;
+ }
+
+ *cb = c;
+
+ return bar_count;
+}
+
int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
void __iomem *base)
{
- char __iomem *p = base;
struct chameleon_fpga_header *header;
- uint32_t dtype;
+ struct chameleon_bar *cb;
+ char __iomem *p = base;
int num_cells = 0;
+ uint32_t dtype;
+ int bar_count;
int ret = 0;
u32 hsize;
if (header->magic != CHAMELEONV2_MAGIC) {
pr_err("Unsupported chameleon version 0x%x\n",
header->magic);
- kfree(header);
- return -ENODEV;
+ ret = -ENODEV;
+ goto free_header;
}
p += hsize;
snprintf(bus->name, CHAMELEON_FILENAME_LEN + 1, "%s",
header->filename);
+ bar_count = chameleon_get_bar(&p, mapbase, &cb);
+ if (bar_count < 0)
+ goto free_header;
+
for_each_chameleon_cell(dtype, p) {
switch (dtype) {
case CHAMELEON_DTYPE_GENERAL:
- ret = chameleon_parse_gdd(bus, mapbase, p);
+ ret = chameleon_parse_gdd(bus, cb, p, bar_count);
if (ret < 0)
- goto out;
+ goto free_bar;
p += sizeof(struct chameleon_gdd);
break;
case CHAMELEON_DTYPE_BRIDGE:
- chameleon_parse_bdd(bus, mapbase, p);
+ chameleon_parse_bdd(bus, cb, p);
p += sizeof(struct chameleon_bdd);
break;
case CHAMELEON_DTYPE_END:
default:
pr_err("Invalid chameleon descriptor type 0x%x\n",
dtype);
- kfree(header);
- return -EINVAL;
+ ret = -EINVAL;
+ goto free_bar;
}
num_cells++;
}
if (num_cells == 0)
num_cells = -EINVAL;
+ kfree(cb);
kfree(header);
return num_cells;
-out:
+free_bar:
+ kfree(cb);
+free_header:
kfree(header);
+
return ret;
}
EXPORT_SYMBOL_GPL(chameleon_parse_cells);
#include <linux/gfp.h>
#include <memory/jedec_ddr.h>
#include <linux/export.h>
+#include "of_memory.h"
/**
* of_get_min_tck() - extract min timing values for ddr
line and the Linux version on the second line, but that's
still useful.
-config BMP085
- tristate
- depends on SYSFS
-
-config BMP085_I2C
- tristate "BMP085 digital pressure sensor on I2C"
- select BMP085
- select REGMAP_I2C
- depends on I2C && SYSFS
- help
- Say Y here if you want to support Bosch Sensortec's digital pressure
- sensor hooked to an I2C bus.
-
- To compile this driver as a module, choose M here: the
- module will be called bmp085-i2c.
-
-config BMP085_SPI
- tristate "BMP085 digital pressure sensor on SPI"
- select BMP085
- select REGMAP_SPI
- depends on SPI_MASTER && SYSFS
- help
- Say Y here if you want to support Bosch Sensortec's digital pressure
- sensor hooked to an SPI bus.
-
- To compile this driver as a module, choose M here: the
- module will be called bmp085-spi.
-
config PCH_PHUB
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) PHUB"
select GENERIC_NET_UTILS
obj-$(CONFIG_INTEL_MID_PTI) += pti.o
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
-obj-$(CONFIG_BMP085) += bmp085.o
-obj-$(CONFIG_BMP085_I2C) += bmp085-i2c.o
-obj-$(CONFIG_BMP085_SPI) += bmp085-spi.o
obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o
obj-$(CONFIG_ICS932S401) += ics932s401.o
obj-$(CONFIG_LKDTM) += lkdtm.o
+++ /dev/null
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/err.h>
-#include "bmp085.h"
-
-#define BMP085_I2C_ADDRESS 0x77
-
-static const unsigned short normal_i2c[] = { BMP085_I2C_ADDRESS,
- I2C_CLIENT_END };
-
-static int bmp085_i2c_detect(struct i2c_client *client,
- struct i2c_board_info *info)
-{
- if (client->addr != BMP085_I2C_ADDRESS)
- return -ENODEV;
-
- return bmp085_detect(&client->dev);
-}
-
-static int bmp085_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- int err;
- struct regmap *regmap = devm_regmap_init_i2c(client,
- &bmp085_regmap_config);
-
- if (IS_ERR(regmap)) {
- err = PTR_ERR(regmap);
- dev_err(&client->dev, "Failed to init regmap: %d\n", err);
- return err;
- }
-
- return bmp085_probe(&client->dev, regmap, client->irq);
-}
-
-static int bmp085_i2c_remove(struct i2c_client *client)
-{
- return bmp085_remove(&client->dev);
-}
-
-static const struct i2c_device_id bmp085_id[] = {
- { BMP085_NAME, 0 },
- { "bmp180", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, bmp085_id);
-
-static struct i2c_driver bmp085_i2c_driver = {
- .driver = {
- .name = BMP085_NAME,
- },
- .id_table = bmp085_id,
- .probe = bmp085_i2c_probe,
- .remove = bmp085_i2c_remove,
-
- .detect = bmp085_i2c_detect,
- .address_list = normal_i2c
-};
-
-module_i2c_driver(bmp085_i2c_driver);
-
-MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
-MODULE_DESCRIPTION("BMP085 I2C bus driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/spi/spi.h>
-#include <linux/err.h>
-#include "bmp085.h"
-
-static int bmp085_spi_probe(struct spi_device *client)
-{
- int err;
- struct regmap *regmap;
-
- client->bits_per_word = 8;
- err = spi_setup(client);
- if (err < 0) {
- dev_err(&client->dev, "spi_setup failed!\n");
- return err;
- }
-
- regmap = devm_regmap_init_spi(client, &bmp085_regmap_config);
- if (IS_ERR(regmap)) {
- err = PTR_ERR(regmap);
- dev_err(&client->dev, "Failed to init regmap: %d\n", err);
- return err;
- }
-
- return bmp085_probe(&client->dev, regmap, client->irq);
-}
-
-static int bmp085_spi_remove(struct spi_device *client)
-{
- return bmp085_remove(&client->dev);
-}
-
-static const struct of_device_id bmp085_of_match[] = {
- { .compatible = "bosch,bmp085", },
- { },
-};
-MODULE_DEVICE_TABLE(of, bmp085_of_match);
-
-static const struct spi_device_id bmp085_id[] = {
- { "bmp180", 0 },
- { "bmp181", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(spi, bmp085_id);
-
-static struct spi_driver bmp085_spi_driver = {
- .driver = {
- .name = BMP085_NAME,
- .of_match_table = bmp085_of_match
- },
- .id_table = bmp085_id,
- .probe = bmp085_spi_probe,
- .remove = bmp085_spi_remove
-};
-
-module_spi_driver(bmp085_spi_driver);
-
-MODULE_AUTHOR("Eric Andersson <eric.andersson@unixphere.com>");
-MODULE_DESCRIPTION("BMP085 SPI bus driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/* Copyright (c) 2010 Christoph Mair <christoph.mair@gmail.com>
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This driver supports the bmp085 and bmp18x digital barometric pressure
- * and temperature sensors from Bosch Sensortec. The datasheets
- * are available from their website:
- * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP085-DS000-05.pdf
- * http://www.bosch-sensortec.com/content/language1/downloads/BST-BMP180-DS000-07.pdf
- *
- * A pressure measurement is issued by reading from pressure0_input.
- * The return value ranges from 30000 to 110000 pascal with a resulution
- * of 1 pascal (0.01 millibar) which enables measurements from 9000m above
- * to 500m below sea level.
- *
- * The temperature can be read from temp0_input. Values range from
- * -400 to 850 representing the ambient temperature in degree celsius
- * multiplied by 10.The resolution is 0.1 celsius.
- *
- * Because ambient pressure is temperature dependent, a temperature
- * measurement will be executed automatically even if the user is reading
- * from pressure0_input. This happens if the last temperature measurement
- * has been executed more then one second ago.
- *
- * To decrease RMS noise from pressure measurements, the bmp085 can
- * autonomously calculate the average of up to eight samples. This is
- * set up by writing to the oversampling sysfs file. Accepted values
- * are 0, 1, 2 and 3. 2^x when x is the value written to this file
- * specifies the number of samples used to calculate the ambient pressure.
- * RMS noise is specified with six pascal (without averaging) and decreases
- * down to 3 pascal when using an oversampling setting of 3.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include "bmp085.h"
-#include <linux/interrupt.h>
-#include <linux/completion.h>
-#include <linux/gpio.h>
-
-#define BMP085_CHIP_ID 0x55
-#define BMP085_CALIBRATION_DATA_START 0xAA
-#define BMP085_CALIBRATION_DATA_LENGTH 11 /* 16 bit values */
-#define BMP085_CHIP_ID_REG 0xD0
-#define BMP085_CTRL_REG 0xF4
-#define BMP085_TEMP_MEASUREMENT 0x2E
-#define BMP085_PRESSURE_MEASUREMENT 0x34
-#define BMP085_CONVERSION_REGISTER_MSB 0xF6
-#define BMP085_CONVERSION_REGISTER_LSB 0xF7
-#define BMP085_CONVERSION_REGISTER_XLSB 0xF8
-#define BMP085_TEMP_CONVERSION_TIME 5
-
-struct bmp085_calibration_data {
- s16 AC1, AC2, AC3;
- u16 AC4, AC5, AC6;
- s16 B1, B2;
- s16 MB, MC, MD;
-};
-
-struct bmp085_data {
- struct device *dev;
- struct regmap *regmap;
- struct mutex lock;
- struct bmp085_calibration_data calibration;
- u8 oversampling_setting;
- u32 raw_temperature;
- u32 raw_pressure;
- u32 temp_measurement_period;
- unsigned long last_temp_measurement;
- u8 chip_id;
- s32 b6; /* calculated temperature correction coefficient */
- int irq;
- struct completion done;
-};
-
-static irqreturn_t bmp085_eoc_isr(int irq, void *devid)
-{
- struct bmp085_data *data = devid;
-
- complete(&data->done);
-
- return IRQ_HANDLED;
-}
-
-static s32 bmp085_read_calibration_data(struct bmp085_data *data)
-{
- u16 tmp[BMP085_CALIBRATION_DATA_LENGTH];
- struct bmp085_calibration_data *cali = &(data->calibration);
- s32 status = regmap_bulk_read(data->regmap,
- BMP085_CALIBRATION_DATA_START, (u8 *)tmp,
- (BMP085_CALIBRATION_DATA_LENGTH << 1));
- if (status < 0)
- return status;
-
- cali->AC1 = be16_to_cpu(tmp[0]);
- cali->AC2 = be16_to_cpu(tmp[1]);
- cali->AC3 = be16_to_cpu(tmp[2]);
- cali->AC4 = be16_to_cpu(tmp[3]);
- cali->AC5 = be16_to_cpu(tmp[4]);
- cali->AC6 = be16_to_cpu(tmp[5]);
- cali->B1 = be16_to_cpu(tmp[6]);
- cali->B2 = be16_to_cpu(tmp[7]);
- cali->MB = be16_to_cpu(tmp[8]);
- cali->MC = be16_to_cpu(tmp[9]);
- cali->MD = be16_to_cpu(tmp[10]);
- return 0;
-}
-
-static s32 bmp085_update_raw_temperature(struct bmp085_data *data)
-{
- u16 tmp;
- s32 status;
-
- mutex_lock(&data->lock);
-
- init_completion(&data->done);
-
- status = regmap_write(data->regmap, BMP085_CTRL_REG,
- BMP085_TEMP_MEASUREMENT);
- if (status < 0) {
- dev_err(data->dev,
- "Error while requesting temperature measurement.\n");
- goto exit;
- }
- wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies(
- BMP085_TEMP_CONVERSION_TIME));
-
- status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB,
- &tmp, sizeof(tmp));
- if (status < 0) {
- dev_err(data->dev,
- "Error while reading temperature measurement result\n");
- goto exit;
- }
- data->raw_temperature = be16_to_cpu(tmp);
- data->last_temp_measurement = jiffies;
- status = 0; /* everything ok, return 0 */
-
-exit:
- mutex_unlock(&data->lock);
- return status;
-}
-
-static s32 bmp085_update_raw_pressure(struct bmp085_data *data)
-{
- u32 tmp = 0;
- s32 status;
-
- mutex_lock(&data->lock);
-
- init_completion(&data->done);
-
- status = regmap_write(data->regmap, BMP085_CTRL_REG,
- BMP085_PRESSURE_MEASUREMENT +
- (data->oversampling_setting << 6));
- if (status < 0) {
- dev_err(data->dev,
- "Error while requesting pressure measurement.\n");
- goto exit;
- }
-
- /* wait for the end of conversion */
- wait_for_completion_timeout(&data->done, 1 + msecs_to_jiffies(
- 2+(3 << data->oversampling_setting)));
- /* copy data into a u32 (4 bytes), but skip the first byte. */
- status = regmap_bulk_read(data->regmap, BMP085_CONVERSION_REGISTER_MSB,
- ((u8 *)&tmp)+1, 3);
- if (status < 0) {
- dev_err(data->dev,
- "Error while reading pressure measurement results\n");
- goto exit;
- }
- data->raw_pressure = be32_to_cpu((tmp));
- data->raw_pressure >>= (8-data->oversampling_setting);
- status = 0; /* everything ok, return 0 */
-
-exit:
- mutex_unlock(&data->lock);
- return status;
-}
-
-/*
- * This function starts the temperature measurement and returns the value
- * in tenth of a degree celsius.
- */
-static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature)
-{
- struct bmp085_calibration_data *cali = &data->calibration;
- long x1, x2;
- int status;
-
- status = bmp085_update_raw_temperature(data);
- if (status < 0)
- goto exit;
-
- x1 = ((data->raw_temperature - cali->AC6) * cali->AC5) >> 15;
- x2 = (cali->MC << 11) / (x1 + cali->MD);
- data->b6 = x1 + x2 - 4000;
- /* if NULL just update b6. Used for pressure only measurements */
- if (temperature != NULL)
- *temperature = (x1+x2+8) >> 4;
-
-exit:
- return status;
-}
-
-/*
- * This function starts the pressure measurement and returns the value
- * in millibar. Since the pressure depends on the ambient temperature,
- * a temperature measurement is executed according to the given temperature
- * measurement period (default is 1 sec boundary). This period could vary
- * and needs to be adjusted according to the sensor environment, i.e. if big
- * temperature variations then the temperature needs to be read out often.
- */
-static s32 bmp085_get_pressure(struct bmp085_data *data, int *pressure)
-{
- struct bmp085_calibration_data *cali = &data->calibration;
- s32 x1, x2, x3, b3;
- u32 b4, b7;
- s32 p;
- int status;
-
- /* alt least every second force an update of the ambient temperature */
- if ((data->last_temp_measurement == 0) ||
- time_is_before_jiffies(data->last_temp_measurement + 1*HZ)) {
- status = bmp085_get_temperature(data, NULL);
- if (status < 0)
- return status;
- }
-
- status = bmp085_update_raw_pressure(data);
- if (status < 0)
- return status;
-
- x1 = (data->b6 * data->b6) >> 12;
- x1 *= cali->B2;
- x1 >>= 11;
-
- x2 = cali->AC2 * data->b6;
- x2 >>= 11;
-
- x3 = x1 + x2;
-
- b3 = (((((s32)cali->AC1) * 4 + x3) << data->oversampling_setting) + 2);
- b3 >>= 2;
-
- x1 = (cali->AC3 * data->b6) >> 13;
- x2 = (cali->B1 * ((data->b6 * data->b6) >> 12)) >> 16;
- x3 = (x1 + x2 + 2) >> 2;
- b4 = (cali->AC4 * (u32)(x3 + 32768)) >> 15;
-
- b7 = ((u32)data->raw_pressure - b3) *
- (50000 >> data->oversampling_setting);
- p = ((b7 < 0x80000000) ? ((b7 << 1) / b4) : ((b7 / b4) * 2));
-
- x1 = p >> 8;
- x1 *= x1;
- x1 = (x1 * 3038) >> 16;
- x2 = (-7357 * p) >> 16;
- p += (x1 + x2 + 3791) >> 4;
-
- *pressure = p;
-
- return 0;
-}
-
-/*
- * This function sets the chip-internal oversampling. Valid values are 0..3.
- * The chip will use 2^oversampling samples for internal averaging.
- * This influences the measurement time and the accuracy; larger values
- * increase both. The datasheet gives an overview on how measurement time,
- * accuracy and noise correlate.
- */
-static void bmp085_set_oversampling(struct bmp085_data *data,
- unsigned char oversampling)
-{
- if (oversampling > 3)
- oversampling = 3;
- data->oversampling_setting = oversampling;
-}
-
-/*
- * Returns the currently selected oversampling. Range: 0..3
- */
-static unsigned char bmp085_get_oversampling(struct bmp085_data *data)
-{
- return data->oversampling_setting;
-}
-
-/* sysfs callbacks */
-static ssize_t set_oversampling(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
- unsigned long oversampling;
- int err = kstrtoul(buf, 10, &oversampling);
-
- if (err == 0) {
- mutex_lock(&data->lock);
- bmp085_set_oversampling(data, oversampling);
- mutex_unlock(&data->lock);
- return count;
- }
-
- return err;
-}
-
-static ssize_t show_oversampling(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- return sprintf(buf, "%u\n", bmp085_get_oversampling(data));
-}
-static DEVICE_ATTR(oversampling, S_IWUSR | S_IRUGO,
- show_oversampling, set_oversampling);
-
-
-static ssize_t show_temperature(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int temperature;
- int status;
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- status = bmp085_get_temperature(data, &temperature);
- if (status < 0)
- return status;
- else
- return sprintf(buf, "%d\n", temperature);
-}
-static DEVICE_ATTR(temp0_input, S_IRUGO, show_temperature, NULL);
-
-
-static ssize_t show_pressure(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int pressure;
- int status;
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- status = bmp085_get_pressure(data, &pressure);
- if (status < 0)
- return status;
- else
- return sprintf(buf, "%d\n", pressure);
-}
-static DEVICE_ATTR(pressure0_input, S_IRUGO, show_pressure, NULL);
-
-
-static struct attribute *bmp085_attributes[] = {
- &dev_attr_temp0_input.attr,
- &dev_attr_pressure0_input.attr,
- &dev_attr_oversampling.attr,
- NULL
-};
-
-static const struct attribute_group bmp085_attr_group = {
- .attrs = bmp085_attributes,
-};
-
-int bmp085_detect(struct device *dev)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
- unsigned int id;
- int ret;
-
- ret = regmap_read(data->regmap, BMP085_CHIP_ID_REG, &id);
- if (ret < 0)
- return ret;
-
- if (id != data->chip_id)
- return -ENODEV;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(bmp085_detect);
-
-static void bmp085_get_of_properties(struct bmp085_data *data)
-{
-#ifdef CONFIG_OF
- struct device_node *np = data->dev->of_node;
- u32 prop;
-
- if (!np)
- return;
-
- if (!of_property_read_u32(np, "chip-id", &prop))
- data->chip_id = prop & 0xff;
-
- if (!of_property_read_u32(np, "temp-measurement-period", &prop))
- data->temp_measurement_period = (prop/100)*HZ;
-
- if (!of_property_read_u32(np, "default-oversampling", &prop))
- data->oversampling_setting = prop & 0xff;
-#endif
-}
-
-static int bmp085_init_client(struct bmp085_data *data)
-{
- int status = bmp085_read_calibration_data(data);
-
- if (status < 0)
- return status;
-
- /* default settings */
- data->chip_id = BMP085_CHIP_ID;
- data->last_temp_measurement = 0;
- data->temp_measurement_period = 1*HZ;
- data->oversampling_setting = 3;
-
- bmp085_get_of_properties(data);
-
- mutex_init(&data->lock);
-
- return 0;
-}
-
-struct regmap_config bmp085_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8
-};
-EXPORT_SYMBOL_GPL(bmp085_regmap_config);
-
-int bmp085_probe(struct device *dev, struct regmap *regmap, int irq)
-{
- struct bmp085_data *data;
- int err = 0;
-
- data = kzalloc(sizeof(struct bmp085_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
-
- dev_set_drvdata(dev, data);
- data->dev = dev;
- data->regmap = regmap;
- data->irq = irq;
-
- if (data->irq > 0) {
- err = devm_request_irq(dev, data->irq, bmp085_eoc_isr,
- IRQF_TRIGGER_RISING, "bmp085",
- data);
- if (err < 0)
- goto exit_free;
- }
-
- /* Initialize the BMP085 chip */
- err = bmp085_init_client(data);
- if (err < 0)
- goto exit_free;
-
- err = bmp085_detect(dev);
- if (err < 0) {
- dev_err(dev, "%s: chip_id failed!\n", BMP085_NAME);
- goto exit_free;
- }
-
- /* Register sysfs hooks */
- err = sysfs_create_group(&dev->kobj, &bmp085_attr_group);
- if (err)
- goto exit_free;
-
- dev_info(dev, "Successfully initialized %s!\n", BMP085_NAME);
-
- return 0;
-
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-EXPORT_SYMBOL_GPL(bmp085_probe);
-
-int bmp085_remove(struct device *dev)
-{
- struct bmp085_data *data = dev_get_drvdata(dev);
-
- sysfs_remove_group(&data->dev->kobj, &bmp085_attr_group);
- kfree(data);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(bmp085_remove);
-
-MODULE_AUTHOR("Christoph Mair <christoph.mair@gmail.com>");
-MODULE_DESCRIPTION("BMP085 driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Copyright (c) 2012 Bosch Sensortec GmbH
- * Copyright (c) 2012 Unixphere AB
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _BMP085_H
-#define _BMP085_H
-
-#include <linux/regmap.h>
-
-#define BMP085_NAME "bmp085"
-
-extern struct regmap_config bmp085_regmap_config;
-
-int bmp085_probe(struct device *dev, struct regmap *regmap, int irq);
-int bmp085_remove(struct device *dev);
-int bmp085_detect(struct device *dev);
-
-#endif
.err_handler = &genwqe_err_handler,
};
+/**
+ * genwqe_devnode() - Set default access mode for genwqe devices.
+ *
+ * Default mode should be rw for everybody. Do not change default
+ * device name.
+ */
+static char *genwqe_devnode(struct device *dev, umode_t *mode)
+{
+ if (mode)
+ *mode = 0666;
+ return NULL;
+}
+
/**
* genwqe_init_module() - Driver registration and initialization
*/
return -ENOMEM;
}
+ class_genwqe->devnode = genwqe_devnode;
+
debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL);
if (!debugfs_genwqe) {
rc = -ENOMEM;
void mei_amthif_reset_params(struct mei_device *dev)
{
/* reset iamthif parameters. */
- dev->iamthif_current_cb = NULL;
dev->iamthif_canceled = false;
dev->iamthif_state = MEI_IAMTHIF_IDLE;
dev->iamthif_stall_timer = 0;
struct mei_cl *cl = &dev->iamthif_cl;
int ret;
- if (mei_cl_is_connected(cl))
- return 0;
+ mutex_lock(&dev->device_lock);
+
+ if (mei_cl_is_connected(cl)) {
+ ret = 0;
+ goto out;
+ }
dev->iamthif_state = MEI_IAMTHIF_IDLE;
ret = mei_cl_link(cl);
if (ret < 0) {
dev_err(dev->dev, "amthif: failed cl_link %d\n", ret);
- return ret;
+ goto out;
}
ret = mei_cl_connect(cl, me_cl, NULL);
- return ret;
-}
-
-/**
- * mei_amthif_read - read data from AMTHIF client
- *
- * @dev: the device structure
- * @file: pointer to file object
- * @ubuf: pointer to user data in user space
- * @length: data length to read
- * @offset: data read offset
- *
- * Locking: called under "dev->device_lock" lock
- *
- * Return:
- * returned data length on success,
- * zero if no data to read,
- * negative on failure.
- */
-int mei_amthif_read(struct mei_device *dev, struct file *file,
- char __user *ubuf, size_t length, loff_t *offset)
-{
- struct mei_cl *cl = file->private_data;
- struct mei_cl_cb *cb;
- int rets;
- int wait_ret;
-
- dev_dbg(dev->dev, "checking amthif data\n");
- cb = mei_cl_read_cb(cl, file);
-
- /* Check for if we can block or not*/
- if (cb == NULL && file->f_flags & O_NONBLOCK)
- return -EAGAIN;
-
-
- dev_dbg(dev->dev, "waiting for amthif data\n");
- while (cb == NULL) {
- /* unlock the Mutex */
- mutex_unlock(&dev->device_lock);
-
- wait_ret = wait_event_interruptible(cl->rx_wait,
- !list_empty(&cl->rd_completed) ||
- !mei_cl_is_connected(cl));
-
- /* Locking again the Mutex */
- mutex_lock(&dev->device_lock);
-
- if (wait_ret)
- return -ERESTARTSYS;
-
- if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
- goto out;
- }
-
- cb = mei_cl_read_cb(cl, file);
- }
-
- if (cb->status) {
- rets = cb->status;
- dev_dbg(dev->dev, "read operation failed %d\n", rets);
- goto free;
- }
-
- dev_dbg(dev->dev, "Got amthif data\n");
- /* if the whole message will fit remove it from the list */
- if (cb->buf_idx >= *offset && length >= (cb->buf_idx - *offset))
- list_del_init(&cb->list);
- else if (cb->buf_idx <= *offset) {
- /* end of the message has been reached */
- list_del_init(&cb->list);
- rets = 0;
- goto free;
- }
- /* else means that not full buffer will be read and do not
- * remove message from deletion list
- */
-
- dev_dbg(dev->dev, "amthif cb->buf.size - %zu cb->buf_idx - %zu\n",
- cb->buf.size, cb->buf_idx);
-
- /* length is being truncated to PAGE_SIZE, however,
- * the buf_idx may point beyond */
- length = min_t(size_t, length, (cb->buf_idx - *offset));
-
- if (copy_to_user(ubuf, cb->buf.data + *offset, length)) {
- dev_dbg(dev->dev, "failed to copy data to userland\n");
- rets = -EFAULT;
- } else {
- rets = length;
- if ((*offset + length) < cb->buf_idx) {
- *offset += length;
- goto out;
- }
- }
-free:
- dev_dbg(dev->dev, "free amthif cb memory.\n");
- *offset = 0;
- mei_io_cb_free(cb);
out:
- return rets;
+ mutex_unlock(&dev->device_lock);
+ return ret;
}
/**
* mei_amthif_read_start - queue message for sending read credential
*
* @cl: host client
- * @file: file pointer of message recipient
+ * @fp: file pointer of message recipient
*
* Return: 0 on success, <0 on failure.
*/
-static int mei_amthif_read_start(struct mei_cl *cl, const struct file *file)
+static int mei_amthif_read_start(struct mei_cl *cl, const struct file *fp)
{
struct mei_device *dev = cl->dev;
struct mei_cl_cb *cb;
- int rets;
-
- cb = mei_io_cb_init(cl, MEI_FOP_READ, file);
- if (!cb) {
- rets = -ENOMEM;
- goto err;
- }
- rets = mei_io_cb_alloc_buf(cb, mei_cl_mtu(cl));
- if (rets)
- goto err;
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, fp);
+ if (!cb)
+ return -ENOMEM;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ cl->rx_flow_ctrl_creds++;
dev->iamthif_state = MEI_IAMTHIF_READING;
- dev->iamthif_fp = cb->fp;
- dev->iamthif_current_cb = cb;
-
- return 0;
-err:
- mei_io_cb_free(cb);
- return rets;
-}
-
-/**
- * mei_amthif_send_cmd - send amthif command to the ME
- *
- * @cl: the host client
- * @cb: mei call back struct
- *
- * Return: 0 on success, <0 on failure.
- */
-static int mei_amthif_send_cmd(struct mei_cl *cl, struct mei_cl_cb *cb)
-{
- struct mei_device *dev;
- int ret;
-
- if (!cl->dev || !cb)
- return -ENODEV;
-
- dev = cl->dev;
-
- dev->iamthif_state = MEI_IAMTHIF_WRITING;
- dev->iamthif_current_cb = cb;
- dev->iamthif_fp = cb->fp;
- dev->iamthif_canceled = false;
-
- ret = mei_cl_write(cl, cb, false);
- if (ret < 0)
- return ret;
-
- if (cb->completed)
- cb->status = mei_amthif_read_start(cl, cb->fp);
+ cl->fp = cb->fp;
return 0;
}
{
struct mei_cl *cl = &dev->iamthif_cl;
struct mei_cl_cb *cb;
+ int ret;
dev->iamthif_canceled = false;
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- dev->iamthif_fp = NULL;
dev_dbg(dev->dev, "complete amthif cmd_list cb.\n");
cb = list_first_entry_or_null(&dev->amthif_cmd_list.list,
typeof(*cb), list);
- if (!cb)
+ if (!cb) {
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ cl->fp = NULL;
return 0;
+ }
list_del_init(&cb->list);
- return mei_amthif_send_cmd(cl, cb);
+ dev->iamthif_state = MEI_IAMTHIF_WRITING;
+ cl->fp = cb->fp;
+
+ ret = mei_cl_write(cl, cb, false);
+ if (ret < 0)
+ return ret;
+
+ if (cb->completed)
+ cb->status = mei_amthif_read_start(cl, cb->fp);
+
+ return 0;
}
/**
/*
* The previous request is still in processing, queue this one.
*/
- if (dev->iamthif_state > MEI_IAMTHIF_IDLE &&
- dev->iamthif_state < MEI_IAMTHIF_READ_COMPLETE)
+ if (dev->iamthif_state != MEI_IAMTHIF_IDLE)
return 0;
return mei_amthif_run_next_cmd(dev);
/**
* mei_amthif_poll - the amthif poll function
*
- * @dev: the device structure
* @file: pointer to file structure
* @wait: pointer to poll_table structure
*
*
* Locking: called under "dev->device_lock" lock
*/
-
-unsigned int mei_amthif_poll(struct mei_device *dev,
- struct file *file, poll_table *wait)
+unsigned int mei_amthif_poll(struct file *file, poll_table *wait)
{
+ struct mei_cl *cl = file->private_data;
+ struct mei_cl_cb *cb = mei_cl_read_cb(cl, file);
unsigned int mask = 0;
- poll_wait(file, &dev->iamthif_cl.rx_wait, wait);
-
- if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE &&
- dev->iamthif_fp == file) {
-
+ poll_wait(file, &cl->rx_wait, wait);
+ if (cb)
mask |= POLLIN | POLLRDNORM;
- mei_amthif_run_next_cmd(dev);
- }
return mask;
}
-
-
/**
* mei_amthif_irq_write - write iamthif command in irq thread context.
*
return 0;
dev_dbg(dev->dev, "completed amthif read.\n ");
- dev->iamthif_current_cb = NULL;
dev->iamthif_stall_timer = 0;
return 0;
{
struct mei_device *dev = cl->dev;
- if (cb->fop_type == MEI_FOP_WRITE) {
+ dev_dbg(dev->dev, "completing amthif call back.\n");
+ switch (cb->fop_type) {
+ case MEI_FOP_WRITE:
if (!cb->status) {
dev->iamthif_stall_timer = MEI_IAMTHIF_STALL_TIMER;
mei_io_cb_free(cb);
return;
}
- /*
- * in case of error enqueue the write cb to complete read list
- * so it can be propagated to the reader
- */
- list_add_tail(&cb->list, &cl->rd_completed);
- wake_up_interruptible(&cl->rx_wait);
- return;
- }
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ cl->fp = NULL;
+ if (!dev->iamthif_canceled) {
+ /*
+ * in case of error enqueue the write cb to complete
+ * read list so it can be propagated to the reader
+ */
+ list_add_tail(&cb->list, &cl->rd_completed);
+ wake_up_interruptible(&cl->rx_wait);
+ } else {
+ mei_io_cb_free(cb);
+ }
+ break;
+ case MEI_FOP_READ:
+ if (!dev->iamthif_canceled) {
+ list_add_tail(&cb->list, &cl->rd_completed);
+ dev_dbg(dev->dev, "amthif read completed\n");
+ wake_up_interruptible(&cl->rx_wait);
+ } else {
+ mei_io_cb_free(cb);
+ }
- if (!dev->iamthif_canceled) {
- dev->iamthif_state = MEI_IAMTHIF_READ_COMPLETE;
dev->iamthif_stall_timer = 0;
- list_add_tail(&cb->list, &cl->rd_completed);
- dev_dbg(dev->dev, "amthif read completed\n");
- } else {
mei_amthif_run_next_cmd(dev);
+ break;
+ default:
+ WARN_ON(1);
}
-
- dev_dbg(dev->dev, "completing amthif call back.\n");
- wake_up_interruptible(&cl->rx_wait);
}
/**
* mei_clear_list - removes all callbacks associated with file
* from mei_cb_list
*
- * @dev: device structure.
* @file: file structure
* @mei_cb_list: callbacks list
*
* mei_clear_list is called to clear resources associated with file
* when application calls close function or Ctrl-C was pressed
- *
- * Return: true if callback removed from the list, false otherwise
*/
-static bool mei_clear_list(struct mei_device *dev,
- const struct file *file, struct list_head *mei_cb_list)
+static void mei_clear_list(const struct file *file,
+ struct list_head *mei_cb_list)
{
- struct mei_cl *cl = &dev->iamthif_cl;
struct mei_cl_cb *cb, *next;
- bool removed = false;
-
- /* list all list member */
- list_for_each_entry_safe(cb, next, mei_cb_list, list) {
- /* check if list member associated with a file */
- if (file == cb->fp) {
- /* check if cb equal to current iamthif cb */
- if (dev->iamthif_current_cb == cb) {
- dev->iamthif_current_cb = NULL;
- /* send flow control to iamthif client */
- mei_hbm_cl_flow_control_req(dev, cl);
- }
- /* free all allocated buffers */
- mei_io_cb_free(cb);
- removed = true;
- }
- }
- return removed;
-}
-/**
- * mei_clear_lists - removes all callbacks associated with file
- *
- * @dev: device structure
- * @file: file structure
- *
- * mei_clear_lists is called to clear resources associated with file
- * when application calls close function or Ctrl-C was pressed
- *
- * Return: true if callback removed from the list, false otherwise
- */
-static bool mei_clear_lists(struct mei_device *dev, const struct file *file)
-{
- bool removed = false;
- struct mei_cl *cl = &dev->iamthif_cl;
-
- /* remove callbacks associated with a file */
- mei_clear_list(dev, file, &dev->amthif_cmd_list.list);
- if (mei_clear_list(dev, file, &cl->rd_completed))
- removed = true;
-
- mei_clear_list(dev, file, &dev->ctrl_rd_list.list);
-
- if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list))
- removed = true;
-
- if (mei_clear_list(dev, file, &dev->write_waiting_list.list))
- removed = true;
-
- if (mei_clear_list(dev, file, &dev->write_list.list))
- removed = true;
-
- /* check if iamthif_current_cb not NULL */
- if (dev->iamthif_current_cb && !removed) {
- /* check file and iamthif current cb association */
- if (dev->iamthif_current_cb->fp == file) {
- /* remove cb */
- mei_io_cb_free(dev->iamthif_current_cb);
- dev->iamthif_current_cb = NULL;
- removed = true;
- }
- }
- return removed;
+ list_for_each_entry_safe(cb, next, mei_cb_list, list)
+ if (file == cb->fp)
+ mei_io_cb_free(cb);
}
/**
*/
int mei_amthif_release(struct mei_device *dev, struct file *file)
{
+ struct mei_cl *cl = file->private_data;
+
if (dev->iamthif_open_count > 0)
dev->iamthif_open_count--;
- if (dev->iamthif_fp == file &&
- dev->iamthif_state != MEI_IAMTHIF_IDLE) {
+ if (cl->fp == file && dev->iamthif_state != MEI_IAMTHIF_IDLE) {
dev_dbg(dev->dev, "amthif canceled iamthif state %d\n",
dev->iamthif_state);
dev->iamthif_canceled = true;
- if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) {
- dev_dbg(dev->dev, "run next amthif iamthif cb\n");
- mei_amthif_run_next_cmd(dev);
- }
}
- if (mei_clear_lists(dev, file))
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ mei_clear_list(file, &dev->amthif_cmd_list.list);
+ mei_clear_list(file, &cl->rd_completed);
+ mei_clear_list(file, &dev->ctrl_rd_list.list);
return 0;
}
goto out;
/* wait on event only if there is no other waiter */
- if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) {
+ /* synchronized under device mutex */
+ if (!waitqueue_active(&cl->rx_wait)) {
mutex_unlock(&bus->device_lock);
mutex_lock(&bus->device_lock);
if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
+ rets = -ENODEV;
goto out;
}
}
/* Prepare for the next read */
if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) {
mutex_lock(&bus->device_lock);
- mei_cl_read_start(cldev->cl, 0, NULL);
+ mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL);
mutex_unlock(&bus->device_lock);
}
}
if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) {
mutex_lock(&bus->device_lock);
- ret = mei_cl_read_start(cldev->cl, 0, NULL);
+ ret = mei_cl_read_start(cldev->cl, mei_cl_mtu(cldev->cl), NULL);
mutex_unlock(&bus->device_lock);
if (ret && ret != -EBUSY)
return ret;
container_of(work, struct mei_device, bus_rescan_work);
struct mei_me_client *me_cl;
- mutex_lock(&bus->device_lock);
me_cl = mei_me_cl_by_uuid(bus, &mei_amthif_guid);
if (me_cl)
mei_amthif_host_init(bus, me_cl);
mei_me_cl_put(me_cl);
- mutex_unlock(&bus->device_lock);
mei_cl_bus_rescan(bus);
}
*
* Return: mei_cl_cb pointer or NULL;
*/
-struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
- const struct file *fp)
+static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl,
+ enum mei_cb_file_ops type,
+ const struct file *fp)
{
struct mei_cl_cb *cb;
}
/**
- * mei_io_cb_alloc_buf - allocate callback buffer
+ * mei_cl_alloc_cb - a convenient wrapper for allocating read cb
*
- * @cb: io callback structure
+ * @cl: host client
* @length: size of the buffer
+ * @type: operation type
+ * @fp: associated file pointer (might be NULL)
*
- * Return: 0 on success
- * -EINVAL if cb is NULL
- * -ENOMEM if allocation failed
+ * Return: cb on success and NULL on failure
*/
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length)
+struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops fop_type,
+ const struct file *fp)
{
+ struct mei_cl_cb *cb;
+
+ cb = mei_io_cb_init(cl, fop_type, fp);
if (!cb)
- return -EINVAL;
+ return NULL;
if (length == 0)
- return 0;
+ return cb;
cb->buf.data = kmalloc(length, GFP_KERNEL);
- if (!cb->buf.data)
- return -ENOMEM;
+ if (!cb->buf.data) {
+ mei_io_cb_free(cb);
+ return NULL;
+ }
cb->buf.size = length;
- return 0;
+
+ return cb;
}
/**
- * mei_cl_alloc_cb - a convenient wrapper for allocating read cb
+ * mei_cl_enqueue_ctrl_wr_cb - a convenient wrapper for allocating
+ * and enqueuing of the control commands cb
*
* @cl: host client
* @length: size of the buffer
* @fp: associated file pointer (might be NULL)
*
* Return: cb on success and NULL on failure
+ * Locking: called under "dev->device_lock" lock
*/
-struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
- enum mei_cb_file_ops type,
- const struct file *fp)
+struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops fop_type,
+ const struct file *fp)
{
struct mei_cl_cb *cb;
- cb = mei_io_cb_init(cl, type, fp);
- if (!cb)
- return NULL;
+ /* for RX always allocate at least client's mtu */
+ if (length)
+ length = max_t(size_t, length, mei_cl_mtu(cl));
- if (mei_io_cb_alloc_buf(cb, length)) {
- mei_io_cb_free(cb);
+ cb = mei_cl_alloc_cb(cl, length, fop_type, fp);
+ if (!cb)
return NULL;
- }
+ list_add_tail(&cb->list, &cl->dev->ctrl_wr_list.list);
return cb;
}
mei_io_list_flush(&dev->ctrl_rd_list, cl);
mei_io_list_flush(&dev->ctrl_wr_list, cl);
mei_cl_wake_all(cl);
- cl->mei_flow_ctrl_creds = 0;
+ cl->rx_flow_ctrl_creds = 0;
+ cl->tx_flow_ctrl_creds = 0;
cl->timer_count = 0;
if (!cl->me_cl)
cl->me_cl->connect_count--;
if (cl->me_cl->connect_count == 0)
- cl->me_cl->mei_flow_ctrl_creds = 0;
+ cl->me_cl->tx_flow_ctrl_creds = 0;
mei_me_cl_put(cl->me_cl);
cl->me_cl = NULL;
cl->state = MEI_FILE_DISCONNECTING;
- cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT, NULL);
- rets = cb ? 0 : -ENOMEM;
- if (rets)
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT, NULL);
+ if (!cb) {
+ rets = -ENOMEM;
goto out;
-
- cl_dbg(dev, cl, "add disconnect cb to control write list\n");
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ }
if (mei_hbuf_acquire(dev)) {
rets = mei_cl_send_disconnect(cl, cb);
*
* @cl: host client
* @me_cl: me client
- * @file: pointer to file structure
+ * @fp: pointer to file structure
*
* Locking: called under "dev->device_lock" lock
*
* Return: 0 on success, <0 on failure.
*/
int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
- const struct file *file)
+ const struct file *fp)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
goto nortpm;
}
- cb = mei_io_cb_init(cl, MEI_FOP_CONNECT, file);
- rets = cb ? 0 : -ENOMEM;
- if (rets)
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_CONNECT, fp);
+ if (!cb) {
+ rets = -ENOMEM;
goto out;
-
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ }
/* run hbuf acquire last so we don't have to undo */
if (!mei_cl_is_other_connecting(cl) && mei_hbuf_acquire(dev)) {
return ERR_PTR(ret);
}
-
-
/**
- * mei_cl_flow_ctrl_creds - checks flow_control credits for cl.
+ * mei_cl_tx_flow_ctrl_creds - checks flow_control credits for cl.
*
* @cl: host client
- * @fp: the file pointer associated with the pointer
*
- * Return: 1 if mei_flow_ctrl_creds >0, 0 - otherwise.
+ * Return: 1 if tx_flow_ctrl_creds >0, 0 - otherwise.
*/
-static int mei_cl_flow_ctrl_creds(struct mei_cl *cl, const struct file *fp)
+static int mei_cl_tx_flow_ctrl_creds(struct mei_cl *cl)
{
- int rets;
-
if (WARN_ON(!cl || !cl->me_cl))
return -EINVAL;
- if (cl->mei_flow_ctrl_creds > 0)
+ if (cl->tx_flow_ctrl_creds > 0)
return 1;
- if (mei_cl_is_fixed_address(cl)) {
- rets = mei_cl_read_start(cl, mei_cl_mtu(cl), fp);
- if (rets && rets != -EBUSY)
- return rets;
+ if (mei_cl_is_fixed_address(cl))
return 1;
- }
if (mei_cl_is_single_recv_buf(cl)) {
- if (cl->me_cl->mei_flow_ctrl_creds > 0)
+ if (cl->me_cl->tx_flow_ctrl_creds > 0)
return 1;
}
return 0;
}
/**
- * mei_cl_flow_ctrl_reduce - reduces flow_control.
+ * mei_cl_tx_flow_ctrl_creds_reduce - reduces transmit flow control credits
+ * for a client
*
- * @cl: private data of the file object
+ * @cl: host client
*
* Return:
* 0 on success
* -EINVAL when ctrl credits are <= 0
*/
-static int mei_cl_flow_ctrl_reduce(struct mei_cl *cl)
+static int mei_cl_tx_flow_ctrl_creds_reduce(struct mei_cl *cl)
{
if (WARN_ON(!cl || !cl->me_cl))
return -EINVAL;
return 0;
if (mei_cl_is_single_recv_buf(cl)) {
- if (WARN_ON(cl->me_cl->mei_flow_ctrl_creds <= 0))
+ if (WARN_ON(cl->me_cl->tx_flow_ctrl_creds <= 0))
return -EINVAL;
- cl->me_cl->mei_flow_ctrl_creds--;
+ cl->me_cl->tx_flow_ctrl_creds--;
} else {
- if (WARN_ON(cl->mei_flow_ctrl_creds <= 0))
+ if (WARN_ON(cl->tx_flow_ctrl_creds <= 0))
return -EINVAL;
- cl->mei_flow_ctrl_creds--;
+ cl->tx_flow_ctrl_creds--;
}
return 0;
}
* mei_cl_notify_request - send notification stop/start request
*
* @cl: host client
- * @file: associate request with file
+ * @fp: associate request with file
* @request: 1 for start or 0 for stop
*
* Locking: called under "dev->device_lock" lock
* Return: 0 on such and error otherwise.
*/
int mei_cl_notify_request(struct mei_cl *cl,
- const struct file *file, u8 request)
+ const struct file *fp, u8 request)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
}
fop_type = mei_cl_notify_req2fop(request);
- cb = mei_io_cb_init(cl, fop_type, file);
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, fop_type, fp);
if (!cb) {
rets = -ENOMEM;
goto out;
rets = -ENODEV;
goto out;
}
- list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
- } else {
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ list_move_tail(&cb->list, &dev->ctrl_rd_list.list);
}
mutex_unlock(&dev->device_lock);
return 0;
}
-/**
- * mei_cl_is_read_fc_cb - check if read cb is waiting for flow control
- * for given host client
- *
- * @cl: host client
- *
- * Return: true, if found at least one cb.
- */
-static bool mei_cl_is_read_fc_cb(struct mei_cl *cl)
-{
- struct mei_device *dev = cl->dev;
- struct mei_cl_cb *cb;
-
- list_for_each_entry(cb, &dev->ctrl_wr_list.list, list)
- if (cb->fop_type == MEI_FOP_READ && cb->cl == cl)
- return true;
- return false;
-}
-
/**
* mei_cl_read_start - the start read client message function.
*
if (!mei_cl_is_connected(cl))
return -ENODEV;
- /* HW currently supports only one pending read */
- if (!list_empty(&cl->rd_pending) || mei_cl_is_read_fc_cb(cl))
- return -EBUSY;
-
if (!mei_me_cl_is_active(cl->me_cl)) {
cl_err(dev, cl, "no such me client\n");
return -ENOTTY;
}
- /* always allocate at least client max message */
- length = max_t(size_t, length, mei_cl_mtu(cl));
- cb = mei_cl_alloc_cb(cl, length, MEI_FOP_READ, fp);
+ if (mei_cl_is_fixed_address(cl) || cl == &dev->iamthif_cl)
+ return 0;
+
+ /* HW currently supports only one pending read */
+ if (cl->rx_flow_ctrl_creds)
+ return -EBUSY;
+
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, fp);
if (!cb)
return -ENOMEM;
- if (mei_cl_is_fixed_address(cl)) {
- list_add_tail(&cb->list, &cl->rd_pending);
- return 0;
- }
-
rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
pm_runtime_put_noidle(dev->dev);
goto nortpm;
}
+ rets = 0;
if (mei_hbuf_acquire(dev)) {
rets = mei_hbm_cl_flow_control_req(dev, cl);
if (rets < 0)
goto out;
- list_add_tail(&cb->list, &cl->rd_pending);
- } else {
- rets = 0;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
+ list_move_tail(&cb->list, &cl->rd_pending);
}
+ cl->rx_flow_ctrl_creds++;
out:
cl_dbg(dev, cl, "rpm: autosuspend\n");
first_chunk = cb->buf_idx == 0;
- rets = first_chunk ? mei_cl_flow_ctrl_creds(cl, cb->fp) : 1;
+ rets = first_chunk ? mei_cl_tx_flow_ctrl_creds(cl) : 1;
if (rets < 0)
return rets;
cb->completed = mei_hdr.msg_complete == 1;
if (first_chunk) {
- if (mei_cl_flow_ctrl_reduce(cl))
+ if (mei_cl_tx_flow_ctrl_creds_reduce(cl))
return -EIO;
}
mei_hdr.msg_complete = 0;
mei_hdr.internal = cb->internal;
- rets = mei_cl_flow_ctrl_creds(cl, cb->fp);
+ rets = mei_cl_tx_flow_ctrl_creds(cl);
if (rets < 0)
goto err;
if (rets)
goto err;
- rets = mei_cl_flow_ctrl_reduce(cl);
+ rets = mei_cl_tx_flow_ctrl_creds_reduce(cl);
if (rets)
goto err;
case MEI_FOP_READ:
list_add_tail(&cb->list, &cl->rd_completed);
+ if (!mei_cl_is_fixed_address(cl) &&
+ !WARN_ON(!cl->rx_flow_ctrl_creds))
+ cl->rx_flow_ctrl_creds--;
if (!mei_cl_bus_rx_event(cl))
wake_up_interruptible(&cl->rx_wait);
break;
/*
* MEI IO Functions
*/
-struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type,
- const struct file *fp);
void mei_io_cb_free(struct mei_cl_cb *priv_cb);
-int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length);
-
/**
* mei_io_list_init - Sets up a queue list.
struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length,
enum mei_cb_file_ops type,
const struct file *fp);
+struct mei_cl_cb *mei_cl_enqueue_ctrl_wr_cb(struct mei_cl *cl, size_t length,
+ enum mei_cb_file_ops type,
+ const struct file *fp);
int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp);
/*
* @dev: the device structure
* @cl: client
* @hbm_cmd: host bus message command
+ * @buf: message buffer
* @len: buffer length
*
* Return: 0 on success, <0 on failure.
me_cl->props = res->client_properties;
me_cl->client_id = res->me_addr;
- me_cl->mei_flow_ctrl_creds = 0;
+ me_cl->tx_flow_ctrl_creds = 0;
mei_me_cl_add(dev, me_cl);
}
/**
- * mei_hbm_add_single_flow_creds - adds single buffer credentials.
+ * mei_hbm_add_single_tx_flow_ctrl_creds - adds single buffer credentials.
*
* @dev: the device structure
- * @flow: flow control.
+ * @fctrl: flow control response bus message
*
* Return: 0 on success, < 0 otherwise
*/
-static int mei_hbm_add_single_flow_creds(struct mei_device *dev,
- struct hbm_flow_control *flow)
+static int mei_hbm_add_single_tx_flow_ctrl_creds(struct mei_device *dev,
+ struct hbm_flow_control *fctrl)
{
struct mei_me_client *me_cl;
int rets;
- me_cl = mei_me_cl_by_id(dev, flow->me_addr);
+ me_cl = mei_me_cl_by_id(dev, fctrl->me_addr);
if (!me_cl) {
- dev_err(dev->dev, "no such me client %d\n",
- flow->me_addr);
+ dev_err(dev->dev, "no such me client %d\n", fctrl->me_addr);
return -ENOENT;
}
goto out;
}
- me_cl->mei_flow_ctrl_creds++;
+ me_cl->tx_flow_ctrl_creds++;
dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n",
- flow->me_addr, me_cl->mei_flow_ctrl_creds);
+ fctrl->me_addr, me_cl->tx_flow_ctrl_creds);
rets = 0;
out:
* mei_hbm_cl_flow_control_res - flow control response from me
*
* @dev: the device structure
- * @flow_control: flow control response bus message
+ * @fctrl: flow control response bus message
*/
-static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
- struct hbm_flow_control *flow_control)
+static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev,
+ struct hbm_flow_control *fctrl)
{
struct mei_cl *cl;
- if (!flow_control->host_addr) {
+ if (!fctrl->host_addr) {
/* single receive buffer */
- mei_hbm_add_single_flow_creds(dev, flow_control);
+ mei_hbm_add_single_tx_flow_ctrl_creds(dev, fctrl);
return;
}
- cl = mei_hbm_cl_find_by_cmd(dev, flow_control);
+ cl = mei_hbm_cl_find_by_cmd(dev, fctrl);
if (cl) {
- cl->mei_flow_ctrl_creds++;
+ cl->tx_flow_ctrl_creds++;
cl_dbg(dev, cl, "flow control creds = %d.\n",
- cl->mei_flow_ctrl_creds);
+ cl->tx_flow_ctrl_creds);
}
}
cl->state = MEI_FILE_DISCONNECTING;
cl->timer_count = 0;
- cb = mei_io_cb_init(cl, MEI_FOP_DISCONNECT_RSP, NULL);
+ cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT_RSP,
+ NULL);
if (!cb)
return -ENOMEM;
- list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}
return 0;
}
struct mei_hbm_cl_cmd *cl_cmd;
struct hbm_client_connect_request *disconnect_req;
- struct hbm_flow_control *flow_control;
+ struct hbm_flow_control *fctrl;
/* read the message to our buffer */
BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
case MEI_FLOW_CONTROL_CMD:
dev_dbg(dev->dev, "hbm: client flow control response: message received.\n");
- flow_control = (struct hbm_flow_control *) mei_msg;
- mei_hbm_cl_flow_control_res(dev, flow_control);
+ fctrl = (struct hbm_flow_control *)mei_msg;
+ mei_hbm_cl_tx_flow_ctrl_creds_res(dev, fctrl);
break;
case MEI_PG_ISOLATION_ENTRY_RES_CMD:
#define MEI_DEV_ID_BXT_M 0x1A9A /* Broxton M */
#define MEI_DEV_ID_APL_I 0x5A9A /* Apollo Lake I */
+#define MEI_DEV_ID_KBP 0xA2BA /* Kaby Point */
+#define MEI_DEV_ID_KBP_2 0xA2BB /* Kaby Point 2 */
+
/*
* MEI HW Section
*/
#include <linux/kthread.h>
#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
#include "mei_dev.h"
#include "hbm.h"
}
}
+ pm_runtime_set_active(dev->dev);
+
hcsr = mei_hcsr_read(dev);
/* H_RST may be found lit before reset is started,
* for example if preceding reset flow hasn't completed.
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/irqreturn.h>
+#include <linux/pm_runtime.h>
#include <linux/mei.h>
return ret;
}
+ pm_runtime_set_active(dev->dev);
+
/* enable input ready interrupts:
* SEC_IPC_HOST_INT_MASK.IPC_INPUT_READY_INT_MASK
*/
{
struct mei_device *dev = cl->dev;
struct mei_cl_cb *cb;
- unsigned char *buffer = NULL;
size_t buf_sz;
cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list);
if (!cb) {
- cl_err(dev, cl, "pending read cb not found\n");
- goto out;
+ if (!mei_cl_is_fixed_address(cl)) {
+ cl_err(dev, cl, "pending read cb not found\n");
+ goto discard;
+ }
+ cb = mei_cl_alloc_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, cl->fp);
+ if (!cb)
+ goto discard;
+ list_add_tail(&cb->list, &cl->rd_pending);
}
if (!mei_cl_is_connected(cl)) {
cl_dbg(dev, cl, "not connected\n");
- cb->status = -ENODEV;
- goto out;
- }
-
- if (cb->buf.size == 0 || cb->buf.data == NULL) {
- cl_err(dev, cl, "response buffer is not allocated.\n");
list_move_tail(&cb->list, &complete_list->list);
- cb->status = -ENOMEM;
- goto out;
+ cb->status = -ENODEV;
+ goto discard;
}
buf_sz = mei_hdr->length + cb->buf_idx;
list_move_tail(&cb->list, &complete_list->list);
cb->status = -EMSGSIZE;
- goto out;
+ goto discard;
}
if (cb->buf.size < buf_sz) {
cl_dbg(dev, cl, "message overflow. size %zu len %d idx %zu\n",
cb->buf.size, mei_hdr->length, cb->buf_idx);
- buffer = krealloc(cb->buf.data, buf_sz, GFP_KERNEL);
- if (!buffer) {
- cb->status = -ENOMEM;
- list_move_tail(&cb->list, &complete_list->list);
- goto out;
- }
- cb->buf.data = buffer;
- cb->buf.size = buf_sz;
+ list_move_tail(&cb->list, &complete_list->list);
+ cb->status = -EMSGSIZE;
+ goto discard;
}
- buffer = cb->buf.data + cb->buf_idx;
- mei_read_slots(dev, buffer, mei_hdr->length);
+ mei_read_slots(dev, cb->buf.data + cb->buf_idx, mei_hdr->length);
cb->buf_idx += mei_hdr->length;
pm_request_autosuspend(dev->dev);
}
-out:
- if (!buffer)
- mei_irq_discard_msg(dev, mei_hdr);
+ return 0;
+discard:
+ mei_irq_discard_msg(dev, mei_hdr);
return 0;
}
int slots;
int ret;
+ if (!list_empty(&cl->rd_pending))
+ return 0;
+
msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
slots = mei_hbuf_empty_slots(dev);
if (--dev->iamthif_stall_timer == 0) {
dev_err(dev->dev, "timer: amthif hanged.\n");
mei_reset(dev);
- dev->iamthif_canceled = false;
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
-
- mei_io_cb_free(dev->iamthif_current_cb);
- dev->iamthif_current_cb = NULL;
- dev->iamthif_fp = NULL;
mei_amthif_run_next_cmd(dev);
}
}
goto err_unlock;
}
+ cl->fp = file;
file->private_data = cl;
mutex_unlock(&dev->device_lock);
struct mei_cl *cl = file->private_data;
struct mei_device *dev;
struct mei_cl_cb *cb = NULL;
+ bool nonblock = !!(file->f_flags & O_NONBLOCK);
int rets;
- int err;
-
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
goto out;
}
- if (cl == &dev->iamthif_cl) {
- rets = mei_amthif_read(dev, file, ubuf, length, offset);
- goto out;
- }
-
cb = mei_cl_read_cb(cl, file);
if (cb)
goto copy_buffer;
if (*offset > 0)
*offset = 0;
- err = mei_cl_read_start(cl, length, file);
- if (err && err != -EBUSY) {
- cl_dbg(dev, cl, "mei start read failure status = %d\n", err);
- rets = err;
+ rets = mei_cl_read_start(cl, length, file);
+ if (rets && rets != -EBUSY) {
+ cl_dbg(dev, cl, "mei start read failure status = %d\n", rets);
goto out;
}
- if (list_empty(&cl->rd_completed) && !waitqueue_active(&cl->rx_wait)) {
- if (file->f_flags & O_NONBLOCK) {
- rets = -EAGAIN;
- goto out;
- }
+ if (nonblock) {
+ rets = -EAGAIN;
+ goto out;
+ }
+ if (rets == -EBUSY &&
+ !mei_cl_enqueue_ctrl_wr_cb(cl, length, MEI_FOP_READ, file)) {
+ rets = -ENOMEM;
+ goto out;
+ }
+
+ do {
mutex_unlock(&dev->device_lock);
if (wait_event_interruptible(cl->rx_wait,
- (!list_empty(&cl->rd_completed)) ||
- (!mei_cl_is_connected(cl)))) {
+ (!list_empty(&cl->rd_completed)) ||
+ (!mei_cl_is_connected(cl)))) {
if (signal_pending(current))
return -EINTR;
mutex_lock(&dev->device_lock);
if (!mei_cl_is_connected(cl)) {
- rets = -EBUSY;
+ rets = -ENODEV;
goto out;
}
- }
- cb = mei_cl_read_cb(cl, file);
- if (!cb) {
- rets = 0;
- goto out;
- }
+ cb = mei_cl_read_cb(cl, file);
+ } while (!cb);
copy_buffer:
/* now copy the data to user space */
goto out;
}
- if (cl == &dev->iamthif_cl) {
- mask = mei_amthif_poll(dev, file, wait);
- goto out;
- }
-
if (notify_en) {
poll_wait(file, &cl->ev_wait, wait);
if (cl->notify_ev)
mask |= POLLPRI;
}
+ if (cl == &dev->iamthif_cl) {
+ mask |= mei_amthif_poll(file, wait);
+ goto out;
+ }
+
if (req_events & (POLLIN | POLLRDNORM)) {
poll_wait(file, &cl->rx_wait, wait);
if (!list_empty(&cl->rd_completed))
mask |= POLLIN | POLLRDNORM;
else
- mei_cl_read_start(cl, 0, file);
+ mei_cl_read_start(cl, mei_cl_mtu(cl), file);
}
out:
enum iamthif_states {
MEI_IAMTHIF_IDLE,
MEI_IAMTHIF_WRITING,
- MEI_IAMTHIF_FLOW_CONTROL,
MEI_IAMTHIF_READING,
- MEI_IAMTHIF_READ_COMPLETE
};
enum mei_file_transaction_states {
MEI_IDLE,
MEI_WRITING,
MEI_WRITE_COMPLETE,
- MEI_FLOW_CONTROL,
- MEI_READING,
- MEI_READ_COMPLETE
};
/**
* @refcnt: struct reference count
* @props: client properties
* @client_id: me client id
- * @mei_flow_ctrl_creds: flow control credits
+ * @tx_flow_ctrl_creds: flow control credits
* @connect_count: number connections to this client
* @bus_added: added to bus
*/
struct kref refcnt;
struct mei_client_properties props;
u8 client_id;
- u8 mei_flow_ctrl_creds;
+ u8 tx_flow_ctrl_creds;
u8 connect_count;
u8 bus_added;
};
* @ev_async: event async notification
* @status: connection status
* @me_cl: fw client connected
+ * @fp: file associated with client
* @host_client_id: host id
- * @mei_flow_ctrl_creds: transmit flow credentials
+ * @tx_flow_ctrl_creds: transmit flow credentials
+ * @rx_flow_ctrl_creds: receive flow credentials
* @timer_count: watchdog timer for operation completion
- * @reserved: reserved for alignment
* @notify_en: notification - enabled/disabled
* @notify_ev: pending notification event
* @writing_state: state of the tx
struct fasync_struct *ev_async;
int status;
struct mei_me_client *me_cl;
+ const struct file *fp;
u8 host_client_id;
- u8 mei_flow_ctrl_creds;
+ u8 tx_flow_ctrl_creds;
+ u8 rx_flow_ctrl_creds;
u8 timer_count;
- u8 reserved;
u8 notify_en;
u8 notify_ev;
enum mei_file_transaction_states writing_state;
* @override_fixed_address: force allow fixed address behavior
*
* @amthif_cmd_list : amthif list for cmd waiting
- * @iamthif_fp : file for current amthif operation
* @iamthif_cl : amthif host client
- * @iamthif_current_cb : amthif current operation callback
* @iamthif_open_count : number of opened amthif connections
* @iamthif_stall_timer : timer to detect amthif hang
* @iamthif_state : amthif processor state
/* amthif list for cmd waiting */
struct mei_cl_cb amthif_cmd_list;
- /* driver managed amthif list for reading completed amthif cmd data */
- const struct file *iamthif_fp;
struct mei_cl iamthif_cl;
- struct mei_cl_cb *iamthif_current_cb;
long iamthif_open_count;
u32 iamthif_stall_timer;
enum iamthif_states iamthif_state;
int mei_amthif_host_init(struct mei_device *dev, struct mei_me_client *me_cl);
-int mei_amthif_read(struct mei_device *dev, struct file *file,
- char __user *ubuf, size_t length, loff_t *offset);
-
-unsigned int mei_amthif_poll(struct mei_device *dev,
- struct file *file, poll_table *wait);
+unsigned int mei_amthif_poll(struct file *file, poll_table *wait);
int mei_amthif_release(struct mei_device *dev, struct file *file);
{MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)},
{MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)},
+ {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, mei_me_pch8_cfg)},
+ {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, mei_me_pch8_cfg)},
+
/* required last entry */
{0, }
};
dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret);
+ if (ret && ret != -EAGAIN)
+ schedule_work(&dev->reset_work);
+
return ret;
}
dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret);
+ if (ret)
+ schedule_work(&dev->reset_work);
+
return ret;
}
dev_dbg(&pdev->dev, "rpm: txe: runtime suspend ret=%d\n", ret);
mutex_unlock(&dev->device_lock);
+
+ if (ret && ret != -EAGAIN)
+ schedule_work(&dev->reset_work);
+
return ret;
}
dev_dbg(&pdev->dev, "rpm: txe: runtime resume ret = %d\n", ret);
+ if (ret)
+ schedule_work(&dev->reset_work);
+
return ret;
}
*/
static
void __scif_rma_destroy_tcw(struct scif_mmu_notif *mmn,
- struct scif_endpt *ep,
u64 start, u64 len)
{
struct list_head *item, *tmp;
list_for_each_safe(item, tmp, &mmn->tc_reg_list) {
window = list_entry(item, struct scif_window, list);
- ep = (struct scif_endpt *)window->ep;
if (!len)
break;
start_va = window->va_for_temp;
struct scif_endpt *ep = mmn->ep;
spin_lock(&ep->rma_info.tc_lock);
- __scif_rma_destroy_tcw(mmn, ep, start, len);
+ __scif_rma_destroy_tcw(mmn, start, len);
spin_unlock(&ep->rma_info.tc_lock);
}
spin_lock(&ep->rma_info.tc_lock);
list_for_each_safe(item, tmp, &ep->rma_info.mmn_list) {
mmn = list_entry(item, struct scif_mmu_notif, list);
- __scif_rma_destroy_tcw(mmn, ep, 0, ULONG_MAX);
+ __scif_rma_destroy_tcw(mmn, 0, ULONG_MAX);
}
spin_unlock(&ep->rma_info.tc_lock);
}
{
struct scif_endpt *ep;
struct vma_pvt *vmapvt = vma->vm_private_data;
- int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int nr_pages = vma_pages(vma);
s64 offset;
struct scif_rma_req req;
struct scif_window *window = NULL;
struct scif_window *window = NULL;
struct scif_endpt *ep = (struct scif_endpt *)epd;
s64 start_offset = vma->vm_pgoff << PAGE_SHIFT;
- int nr_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int nr_pages = vma_pages(vma);
int err;
struct vma_pvt *vmapvt;
#include <linux/if_ether.h>
#include <linux/ctype.h>
#include <linux/dmi.h>
+#include <linux/of.h>
#define PHUB_STATUS 0x00 /* Status Register offset */
#define PHUB_CONTROL 0x04 /* Control Register offset */
/* CM-iTC */
#define CLKCFG_UART_48MHZ (1 << 16)
+#define CLKCFG_UART_25MHZ (2 << 16)
#define CLKCFG_BAUDDIV (2 << 20)
#define CLKCFG_PLL2VCO (8 << 9)
#define CLKCFG_UARTCLKSEL (1 << 18)
if (id->driver_data == 1) { /* EG20T PCH */
const char *board_name;
+ unsigned int prefetch = 0x000affaa;
+
+ if (pdev->dev.of_node)
+ of_property_read_u32(pdev->dev.of_node,
+ "intel,eg20t-prefetch",
+ &prefetch);
ret = sysfs_create_file(&pdev->dev.kobj,
&dev_attr_pch_mac.attr);
CLKCFG_UART_MASK);
/* set the prefech value */
- iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
+ iowrite32(prefetch, chip->pch_phub_base_address + 0x14);
/* set the interrupt delay value */
iowrite32(0x25, chip->pch_phub_base_address + 0x44);
chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
+
+ /* quirk for MIPS Boston platform */
+ if (pdev->dev.of_node) {
+ if (of_machine_is_compatible("img,boston")) {
+ pch_phub_read_modify_write_reg(chip,
+ (unsigned int)CLKCFG_REG_OFFSET,
+ CLKCFG_UART_25MHZ,
+ CLKCFG_UART_MASK);
+ }
+ }
} else if (id->driver_data == 2) { /* ML7213 IOH */
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
if (ret)
return -EINVAL;
}
- dg = kmalloc(send_info.len, GFP_KERNEL);
- if (!dg) {
+ dg = memdup_user((void __user *)(uintptr_t)send_info.addr,
+ send_info.len);
+ if (IS_ERR(dg)) {
vmci_ioctl_err(
"cannot allocate memory to dispatch datagram\n");
- return -ENOMEM;
- }
-
- if (copy_from_user(dg, (void __user *)(uintptr_t)send_info.addr,
- send_info.len)) {
- vmci_ioctl_err("error getting datagram\n");
- kfree(dg);
- return -EFAULT;
+ return PTR_ERR(dg);
}
if (VMCI_DG_SIZE(dg) != send_info.len) {
#include <linux/nvmem-provider.h>
#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
-#define EFUSE_A_SHIFT 6
-#define EFUSE_A_MASK 0x3ff
-#define EFUSE_PGENB BIT(3)
-#define EFUSE_LOAD BIT(2)
-#define EFUSE_STROBE BIT(1)
-#define EFUSE_CSB BIT(0)
-
-#define REG_EFUSE_CTRL 0x0000
-#define REG_EFUSE_DOUT 0x0004
+#define RK3288_A_SHIFT 6
+#define RK3288_A_MASK 0x3ff
+#define RK3288_PGENB BIT(3)
+#define RK3288_LOAD BIT(2)
+#define RK3288_STROBE BIT(1)
+#define RK3288_CSB BIT(0)
+
+#define RK3399_A_SHIFT 16
+#define RK3399_A_MASK 0x3ff
+#define RK3399_NBYTES 4
+#define RK3399_STROBSFTSEL BIT(9)
+#define RK3399_RSB BIT(7)
+#define RK3399_PD BIT(5)
+#define RK3399_PGENB BIT(3)
+#define RK3399_LOAD BIT(2)
+#define RK3399_STROBE BIT(1)
+#define RK3399_CSB BIT(0)
+
+#define REG_EFUSE_CTRL 0x0000
+#define REG_EFUSE_DOUT 0x0004
struct rockchip_efuse_chip {
struct device *dev;
struct clk *clk;
};
-static int rockchip_efuse_read(void *context, unsigned int offset,
- void *val, size_t bytes)
+static int rockchip_rk3288_efuse_read(void *context, unsigned int offset,
+ void *val, size_t bytes)
{
struct rockchip_efuse_chip *efuse = context;
u8 *buf = val;
return ret;
}
- writel(EFUSE_LOAD | EFUSE_PGENB, efuse->base + REG_EFUSE_CTRL);
+ writel(RK3288_LOAD | RK3288_PGENB, efuse->base + REG_EFUSE_CTRL);
udelay(1);
while (bytes--) {
writel(readl(efuse->base + REG_EFUSE_CTRL) &
- (~(EFUSE_A_MASK << EFUSE_A_SHIFT)),
+ (~(RK3288_A_MASK << RK3288_A_SHIFT)),
efuse->base + REG_EFUSE_CTRL);
writel(readl(efuse->base + REG_EFUSE_CTRL) |
- ((offset++ & EFUSE_A_MASK) << EFUSE_A_SHIFT),
+ ((offset++ & RK3288_A_MASK) << RK3288_A_SHIFT),
efuse->base + REG_EFUSE_CTRL);
udelay(1);
writel(readl(efuse->base + REG_EFUSE_CTRL) |
- EFUSE_STROBE, efuse->base + REG_EFUSE_CTRL);
+ RK3288_STROBE, efuse->base + REG_EFUSE_CTRL);
udelay(1);
*buf++ = readb(efuse->base + REG_EFUSE_DOUT);
writel(readl(efuse->base + REG_EFUSE_CTRL) &
- (~EFUSE_STROBE), efuse->base + REG_EFUSE_CTRL);
+ (~RK3288_STROBE), efuse->base + REG_EFUSE_CTRL);
+ udelay(1);
+ }
+
+ /* Switch to standby mode */
+ writel(RK3288_PGENB | RK3288_CSB, efuse->base + REG_EFUSE_CTRL);
+
+ clk_disable_unprepare(efuse->clk);
+
+ return 0;
+}
+
+static int rockchip_rk3399_efuse_read(void *context, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct rockchip_efuse_chip *efuse = context;
+ unsigned int addr_start, addr_end, addr_offset, addr_len;
+ u32 out_value;
+ u8 *buf;
+ int ret, i = 0;
+
+ ret = clk_prepare_enable(efuse->clk);
+ if (ret < 0) {
+ dev_err(efuse->dev, "failed to prepare/enable efuse clk\n");
+ return ret;
+ }
+
+ addr_start = rounddown(offset, RK3399_NBYTES) / RK3399_NBYTES;
+ addr_end = roundup(offset + bytes, RK3399_NBYTES) / RK3399_NBYTES;
+ addr_offset = offset % RK3399_NBYTES;
+ addr_len = addr_end - addr_start;
+
+ buf = kzalloc(sizeof(*buf) * addr_len * RK3399_NBYTES, GFP_KERNEL);
+ if (!buf) {
+ clk_disable_unprepare(efuse->clk);
+ return -ENOMEM;
+ }
+
+ writel(RK3399_LOAD | RK3399_PGENB | RK3399_STROBSFTSEL | RK3399_RSB,
+ efuse->base + REG_EFUSE_CTRL);
+ udelay(1);
+ while (addr_len--) {
+ writel(readl(efuse->base + REG_EFUSE_CTRL) | RK3399_STROBE |
+ ((addr_start++ & RK3399_A_MASK) << RK3399_A_SHIFT),
+ efuse->base + REG_EFUSE_CTRL);
udelay(1);
+ out_value = readl(efuse->base + REG_EFUSE_DOUT);
+ writel(readl(efuse->base + REG_EFUSE_CTRL) & (~RK3399_STROBE),
+ efuse->base + REG_EFUSE_CTRL);
+ udelay(1);
+
+ memcpy(&buf[i], &out_value, RK3399_NBYTES);
+ i += RK3399_NBYTES;
}
/* Switch to standby mode */
- writel(EFUSE_PGENB | EFUSE_CSB, efuse->base + REG_EFUSE_CTRL);
+ writel(RK3399_PD | RK3399_CSB, efuse->base + REG_EFUSE_CTRL);
+
+ memcpy(val, buf + addr_offset, bytes);
+
+ kfree(buf);
clk_disable_unprepare(efuse->clk);
};
static const struct of_device_id rockchip_efuse_match[] = {
- { .compatible = "rockchip,rockchip-efuse", },
+ /* deprecated but kept around for dts binding compatibility */
+ {
+ .compatible = "rockchip,rockchip-efuse",
+ .data = (void *)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3066a-efuse",
+ .data = (void *)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3188-efuse",
+ .data = (void *)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3288-efuse",
+ .data = (void *)&rockchip_rk3288_efuse_read,
+ },
+ {
+ .compatible = "rockchip,rk3399-efuse",
+ .data = (void *)&rockchip_rk3399_efuse_read,
+ },
{ /* sentinel */},
};
MODULE_DEVICE_TABLE(of, rockchip_efuse_match);
struct resource *res;
struct nvmem_device *nvmem;
struct rockchip_efuse_chip *efuse;
+ const struct of_device_id *match;
+ struct device *dev = &pdev->dev;
+
+ match = of_match_device(dev->driver->of_match_table, dev);
+ if (!match || !match->data) {
+ dev_err(dev, "failed to get match data\n");
+ return -EINVAL;
+ }
efuse = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_efuse_chip),
GFP_KERNEL);
efuse->dev = &pdev->dev;
econfig.size = resource_size(res);
- econfig.reg_read = rockchip_efuse_read;
+ econfig.reg_read = match->data;
econfig.priv = efuse;
econfig.dev = efuse->dev;
nvmem = nvmem_register(&econfig);
.name = "sclp",
.fops = &sclp_ctl_fops,
};
-
-/*
- * Register sclp_ctl misc device
- */
-static int __init sclp_ctl_init(void)
-{
- return misc_register(&sclp_ctl_device);
-}
-module_init(sclp_ctl_init);
-
-/*
- * Deregister sclp_ctl misc device
- */
-static void __exit sclp_ctl_exit(void)
-{
- misc_deregister(&sclp_ctl_device);
-}
-module_exit(sclp_ctl_exit);
+module_misc_device(sclp_ctl_device);
config SERIAL_PCH_UART
tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART"
- depends on PCI && (X86_32 || COMPILE_TEST)
+ depends on PCI && (X86_32 || MIPS || COMPILE_TEST)
select SERIAL_CORE
help
This driver is for PCH(Platform controller Hub) UART of Intel EG20T
#include <linux/dmi.h>
#include <linux/nmi.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <linux/debugfs.h>
#include <linux/dmaengine.h>
priv->trigger_level = 1;
priv->fcr = 0;
+ if (pdev->dev.of_node)
+ of_property_read_u32(pdev->dev.of_node, "clock-frequency"
+ , &user_uartclk);
+
#ifdef CONFIG_SERIAL_PCH_UART_CONSOLE
pch_uart_ports[board->line_no] = priv;
#endif
++uiomem;
}
- priv->dmem_region_start = i;
+ priv->dmem_region_start = uiomem - &uioinfo->mem[0];
priv->num_dmem_regions = pdata->num_dynamic_regions;
for (i = 0; i < pdata->num_dynamic_regions; ++i) {
"vhost-test",
&vhost_test_fops,
};
-
-static int vhost_test_init(void)
-{
- return misc_register(&vhost_test_misc);
-}
-module_init(vhost_test_init);
-
-static void vhost_test_exit(void)
-{
- misc_deregister(&vhost_test_misc);
-}
-module_exit(vhost_test_exit);
+module_misc_device(vhost_test_misc);
MODULE_VERSION("0.0.1");
MODULE_LICENSE("GPL v2");
help
If you say Y here you get support for the Tundra TSI148 VME bridge
chip.
+
+config VME_FAKE
+ tristate "Fake"
+ help
+ If you say Y here you get support for the fake VME bridge. This
+ provides a virtualised VME Bus for devices with no VME bridge. This
+ is mainly useful for VME development (in the absence of VME
+ hardware).
obj-$(CONFIG_VME_CA91CX42) += vme_ca91cx42.o
obj-$(CONFIG_VME_TSI148) += vme_tsi148.o
+obj-$(CONFIG_VME_FAKE) += vme_fake.o
{ },
};
+MODULE_DEVICE_TABLE(pci, ca91cx42_ids);
+
static struct pci_driver ca91cx42_driver = {
.name = driver_name,
.id_table = ca91cx42_ids,
for (i = 0; i < 4; i++) {
if (stat & CA91CX42_LINT_LM[i]) {
/* We only enable interrupts if the callback is set */
- bridge->lm_callback[i](i);
+ bridge->lm_callback[i](bridge->lm_data[i]);
serviced |= CA91CX42_LINT_LM[i];
}
}
* Callback will be passed the monitor triggered.
*/
static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor,
- void (*callback)(int))
+ void (*callback)(void *), void *data)
{
u32 lm_ctl, tmp;
struct ca91cx42_driver *bridge;
/* Attach callback */
bridge->lm_callback[monitor] = callback;
+ bridge->lm_data[monitor] = data;
/* Enable Location Monitor interrupt */
tmp = ioread32(bridge->base + LINT_EN);
/* Detach callback */
bridge->lm_callback[monitor] = NULL;
+ bridge->lm_data[monitor] = NULL;
/* If all location monitors disabled, disable global Location Monitor */
if ((tmp & (CA91CX42_LINT_LM0 | CA91CX42_LINT_LM1 | CA91CX42_LINT_LM2 |
wait_queue_head_t dma_queue;
wait_queue_head_t iack_queue;
wait_queue_head_t mbox_queue;
- void (*lm_callback[4])(int); /* Called in interrupt handler */
+ void (*lm_callback[4])(void *); /* Called in interrupt handler */
+ void *lm_data[4];
void *crcsr_kernel;
dma_addr_t crcsr_bus;
struct mutex vme_rmw; /* Only one RMW cycle at a time */
--- /dev/null
+/*
+ * Fake VME bridge support.
+ *
+ * This drive provides a fake VME bridge chip, this enables debugging of the
+ * VME framework in the absence of a VME system.
+ *
+ * This driver has to do a number of things in software that would be driven
+ * by hardware if it was available, it will also result in extra overhead at
+ * times when compared with driving actual hardware.
+ *
+ * Author: Martyn Welch <martyn@welches.me.uk>
+ * Copyright (c) 2014 Martyn Welch
+ *
+ * Based on vme_tsi148.c:
+ *
+ * Author: Martyn Welch <martyn.welch@ge.com>
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
+ *
+ * Based on work by Tom Armistead and Ajit Prem
+ * Copyright 2004 Motorola Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/vme.h>
+
+#include "../vme_bridge.h"
+
+/*
+ * Define the number of each that the fake driver supports.
+ */
+#define FAKE_MAX_MASTER 8 /* Max Master Windows */
+#define FAKE_MAX_SLAVE 8 /* Max Slave Windows */
+
+/* Structures to hold information normally held in device registers */
+struct fake_slave_window {
+ int enabled;
+ unsigned long long vme_base;
+ unsigned long long size;
+ dma_addr_t buf_base;
+ u32 aspace;
+ u32 cycle;
+};
+
+struct fake_master_window {
+ int enabled;
+ unsigned long long vme_base;
+ unsigned long long size;
+ u32 aspace;
+ u32 cycle;
+ u32 dwidth;
+};
+
+/* Structure used to hold driver specific information */
+struct fake_driver {
+ struct vme_bridge *parent;
+ struct fake_slave_window slaves[FAKE_MAX_SLAVE];
+ struct fake_master_window masters[FAKE_MAX_MASTER];
+ u32 lm_enabled;
+ unsigned long long lm_base;
+ u32 lm_aspace;
+ u32 lm_cycle;
+ void (*lm_callback[4])(void *);
+ void *lm_data[4];
+ struct tasklet_struct int_tasklet;
+ int int_level;
+ int int_statid;
+ void *crcsr_kernel;
+ dma_addr_t crcsr_bus;
+ /* Only one VME interrupt can be generated at a time, provide locking */
+ struct mutex vme_int;
+};
+
+/* Module parameter */
+static int geoid;
+
+static const char driver_name[] = "vme_fake";
+
+static struct vme_bridge *exit_pointer;
+
+static struct device *vme_root;
+
+/*
+ * Calling VME bus interrupt callback if provided.
+ */
+static void fake_VIRQ_tasklet(unsigned long data)
+{
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = (struct vme_bridge *) data;
+ bridge = fake_bridge->driver_priv;
+
+ vme_irq_handler(fake_bridge, bridge->int_level, bridge->int_statid);
+}
+
+/*
+ * Configure VME interrupt
+ */
+static void fake_irq_set(struct vme_bridge *fake_bridge, int level,
+ int state, int sync)
+{
+ /* Nothing to do */
+}
+
+/*
+ * Generate a VME bus interrupt at the requested level & vector. Wait for
+ * interrupt to be acked.
+ */
+static int fake_irq_generate(struct vme_bridge *fake_bridge, int level,
+ int statid)
+{
+ struct fake_driver *bridge;
+
+ bridge = fake_bridge->driver_priv;
+
+ mutex_lock(&bridge->vme_int);
+
+ bridge->int_level = level;
+
+ bridge->int_statid = statid;
+
+ /*
+ * Schedule tasklet to run VME handler to emulate normal VME interrupt
+ * handler behaviour.
+ */
+ tasklet_schedule(&bridge->int_tasklet);
+
+ mutex_unlock(&bridge->vme_int);
+
+ return 0;
+}
+
+/*
+ * Initialize a slave window with the requested attributes.
+ */
+static int fake_slave_set(struct vme_slave_resource *image, int enabled,
+ unsigned long long vme_base, unsigned long long size,
+ dma_addr_t buf_base, u32 aspace, u32 cycle)
+{
+ unsigned int i, granularity = 0;
+ unsigned long long vme_bound;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = image->parent;
+ bridge = fake_bridge->driver_priv;
+
+ i = image->number;
+
+ switch (aspace) {
+ case VME_A16:
+ granularity = 0x10;
+ break;
+ case VME_A24:
+ granularity = 0x1000;
+ break;
+ case VME_A32:
+ granularity = 0x10000;
+ break;
+ case VME_A64:
+ granularity = 0x10000;
+ break;
+ case VME_CRCSR:
+ case VME_USER1:
+ case VME_USER2:
+ case VME_USER3:
+ case VME_USER4:
+ default:
+ pr_err("Invalid address space\n");
+ return -EINVAL;
+ }
+
+ /*
+ * Bound address is a valid address for the window, adjust
+ * accordingly
+ */
+ vme_bound = vme_base + size - granularity;
+
+ if (vme_base & (granularity - 1)) {
+ pr_err("Invalid VME base alignment\n");
+ return -EINVAL;
+ }
+ if (vme_bound & (granularity - 1)) {
+ pr_err("Invalid VME bound alignment\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&image->mtx);
+
+ bridge->slaves[i].enabled = enabled;
+ bridge->slaves[i].vme_base = vme_base;
+ bridge->slaves[i].size = size;
+ bridge->slaves[i].buf_base = buf_base;
+ bridge->slaves[i].aspace = aspace;
+ bridge->slaves[i].cycle = cycle;
+
+ mutex_unlock(&image->mtx);
+
+ return 0;
+}
+
+/*
+ * Get slave window configuration.
+ */
+static int fake_slave_get(struct vme_slave_resource *image, int *enabled,
+ unsigned long long *vme_base, unsigned long long *size,
+ dma_addr_t *buf_base, u32 *aspace, u32 *cycle)
+{
+ unsigned int i;
+ struct fake_driver *bridge;
+
+ bridge = image->parent->driver_priv;
+
+ i = image->number;
+
+ mutex_lock(&image->mtx);
+
+ *enabled = bridge->slaves[i].enabled;
+ *vme_base = bridge->slaves[i].vme_base;
+ *size = bridge->slaves[i].size;
+ *buf_base = bridge->slaves[i].buf_base;
+ *aspace = bridge->slaves[i].aspace;
+ *cycle = bridge->slaves[i].cycle;
+
+ mutex_unlock(&image->mtx);
+
+ return 0;
+}
+
+/*
+ * Set the attributes of an outbound window.
+ */
+static int fake_master_set(struct vme_master_resource *image, int enabled,
+ unsigned long long vme_base, unsigned long long size,
+ u32 aspace, u32 cycle, u32 dwidth)
+{
+ int retval = 0;
+ unsigned int i;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = image->parent;
+
+ bridge = fake_bridge->driver_priv;
+
+ /* Verify input data */
+ if (vme_base & 0xFFFF) {
+ pr_err("Invalid VME Window alignment\n");
+ retval = -EINVAL;
+ goto err_window;
+ }
+
+ if (size & 0xFFFF) {
+ spin_unlock(&image->lock);
+ pr_err("Invalid size alignment\n");
+ retval = -EINVAL;
+ goto err_window;
+ }
+
+ if ((size == 0) && (enabled != 0)) {
+ pr_err("Size must be non-zero for enabled windows\n");
+ retval = -EINVAL;
+ goto err_window;
+ }
+
+ /* Setup data width */
+ switch (dwidth) {
+ case VME_D8:
+ case VME_D16:
+ case VME_D32:
+ break;
+ default:
+ spin_unlock(&image->lock);
+ pr_err("Invalid data width\n");
+ retval = -EINVAL;
+ goto err_dwidth;
+ }
+
+ /* Setup address space */
+ switch (aspace) {
+ case VME_A16:
+ case VME_A24:
+ case VME_A32:
+ case VME_A64:
+ case VME_CRCSR:
+ case VME_USER1:
+ case VME_USER2:
+ case VME_USER3:
+ case VME_USER4:
+ break;
+ default:
+ spin_unlock(&image->lock);
+ pr_err("Invalid address space\n");
+ retval = -EINVAL;
+ goto err_aspace;
+ }
+
+ spin_lock(&image->lock);
+
+ i = image->number;
+
+ bridge->masters[i].enabled = enabled;
+ bridge->masters[i].vme_base = vme_base;
+ bridge->masters[i].size = size;
+ bridge->masters[i].aspace = aspace;
+ bridge->masters[i].cycle = cycle;
+ bridge->masters[i].dwidth = dwidth;
+
+ spin_unlock(&image->lock);
+
+ return 0;
+
+err_aspace:
+err_dwidth:
+err_window:
+ return retval;
+
+}
+
+/*
+ * Set the attributes of an outbound window.
+ */
+static int __fake_master_get(struct vme_master_resource *image, int *enabled,
+ unsigned long long *vme_base, unsigned long long *size,
+ u32 *aspace, u32 *cycle, u32 *dwidth)
+{
+ unsigned int i;
+ struct fake_driver *bridge;
+
+ bridge = image->parent->driver_priv;
+
+ i = image->number;
+
+ *enabled = bridge->masters[i].enabled;
+ *vme_base = bridge->masters[i].vme_base;
+ *size = bridge->masters[i].size;
+ *aspace = bridge->masters[i].aspace;
+ *cycle = bridge->masters[i].cycle;
+ *dwidth = bridge->masters[i].dwidth;
+
+ return 0;
+}
+
+
+static int fake_master_get(struct vme_master_resource *image, int *enabled,
+ unsigned long long *vme_base, unsigned long long *size,
+ u32 *aspace, u32 *cycle, u32 *dwidth)
+{
+ int retval;
+
+ spin_lock(&image->lock);
+
+ retval = __fake_master_get(image, enabled, vme_base, size, aspace,
+ cycle, dwidth);
+
+ spin_unlock(&image->lock);
+
+ return retval;
+}
+
+
+void fake_lm_check(struct fake_driver *bridge, unsigned long long addr,
+ u32 aspace, u32 cycle)
+{
+ struct vme_bridge *fake_bridge;
+ unsigned long long lm_base;
+ u32 lm_aspace, lm_cycle;
+ int i;
+ struct vme_lm_resource *lm;
+ struct list_head *pos = NULL, *n;
+
+ /* Get vme_bridge */
+ fake_bridge = bridge->parent;
+
+ /* Loop through each location monitor resource */
+ list_for_each_safe(pos, n, &fake_bridge->lm_resources) {
+ lm = list_entry(pos, struct vme_lm_resource, list);
+
+ /* If disabled, we're done */
+ if (bridge->lm_enabled == 0)
+ return;
+
+ lm_base = bridge->lm_base;
+ lm_aspace = bridge->lm_aspace;
+ lm_cycle = bridge->lm_cycle;
+
+ /* First make sure that the cycle and address space match */
+ if ((lm_aspace == aspace) && (lm_cycle == cycle)) {
+ for (i = 0; i < lm->monitors; i++) {
+ /* Each location monitor covers 8 bytes */
+ if (((lm_base + (8 * i)) <= addr) &&
+ ((lm_base + (8 * i) + 8) > addr)) {
+ if (bridge->lm_callback[i] != NULL)
+ bridge->lm_callback[i](
+ bridge->lm_data[i]);
+ }
+ }
+ }
+ }
+}
+
+static u8 fake_vmeread8(struct fake_driver *bridge, unsigned long long addr,
+ u32 aspace, u32 cycle)
+{
+ u8 retval = 0xff;
+ int i;
+ unsigned long long start, end, offset;
+ u8 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ if ((addr >= start) && (addr < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u8 *)((void *)bridge->slaves[i].buf_base + offset);
+ retval = *loc;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+ return retval;
+}
+
+static u16 fake_vmeread16(struct fake_driver *bridge, unsigned long long addr,
+ u32 aspace, u32 cycle)
+{
+ u16 retval = 0xffff;
+ int i;
+ unsigned long long start, end, offset;
+ u16 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if ((addr >= start) && ((addr + 1) < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u16 *)((void *)bridge->slaves[i].buf_base + offset);
+ retval = *loc;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+ return retval;
+}
+
+static u32 fake_vmeread32(struct fake_driver *bridge, unsigned long long addr,
+ u32 aspace, u32 cycle)
+{
+ u32 retval = 0xffffffff;
+ int i;
+ unsigned long long start, end, offset;
+ u32 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if ((addr >= start) && ((addr + 3) < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u32 *)((void *)bridge->slaves[i].buf_base + offset);
+ retval = *loc;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+ return retval;
+}
+
+static ssize_t fake_master_read(struct vme_master_resource *image, void *buf,
+ size_t count, loff_t offset)
+{
+ int retval;
+ u32 aspace, cycle, dwidth;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *priv;
+ int i;
+ unsigned long long addr;
+ unsigned int done = 0;
+ unsigned int count32;
+
+ fake_bridge = image->parent;
+
+ priv = fake_bridge->driver_priv;
+
+ i = image->number;
+
+ addr = (unsigned long long)priv->masters[i].vme_base + offset;
+ aspace = priv->masters[i].aspace;
+ cycle = priv->masters[i].cycle;
+ dwidth = priv->masters[i].dwidth;
+
+ spin_lock(&image->lock);
+
+ /* The following code handles VME address alignment. We cannot use
+ * memcpy_xxx here because it may cut data transfers in to 8-bit
+ * cycles when D16 or D32 cycles are required on the VME bus.
+ * On the other hand, the bridge itself assures that the maximum data
+ * cycle configured for the transfer is used and splits it
+ * automatically for non-aligned addresses, so we don't want the
+ * overhead of needlessly forcing small transfers for the entire cycle.
+ */
+ if (addr & 0x1) {
+ *(u8 *)buf = fake_vmeread8(priv, addr, aspace, cycle);
+ done += 1;
+ if (done == count)
+ goto out;
+ }
+ if ((dwidth == VME_D16) || (dwidth == VME_D32)) {
+ if ((addr + done) & 0x2) {
+ if ((count - done) < 2) {
+ *(u8 *)(buf + done) = fake_vmeread8(priv,
+ addr + done, aspace, cycle);
+ done += 1;
+ goto out;
+ } else {
+ *(u16 *)(buf + done) = fake_vmeread16(priv,
+ addr + done, aspace, cycle);
+ done += 2;
+ }
+ }
+ }
+
+ if (dwidth == VME_D32) {
+ count32 = (count - done) & ~0x3;
+ while (done < count32) {
+ *(u32 *)(buf + done) = fake_vmeread32(priv, addr + done,
+ aspace, cycle);
+ done += 4;
+ }
+ } else if (dwidth == VME_D16) {
+ count32 = (count - done) & ~0x3;
+ while (done < count32) {
+ *(u16 *)(buf + done) = fake_vmeread16(priv, addr + done,
+ aspace, cycle);
+ done += 2;
+ }
+ } else if (dwidth == VME_D8) {
+ count32 = (count - done);
+ while (done < count32) {
+ *(u8 *)(buf + done) = fake_vmeread8(priv, addr + done,
+ aspace, cycle);
+ done += 1;
+ }
+
+ }
+
+ if ((dwidth == VME_D16) || (dwidth == VME_D32)) {
+ if ((count - done) & 0x2) {
+ *(u16 *)(buf + done) = fake_vmeread16(priv, addr + done,
+ aspace, cycle);
+ done += 2;
+ }
+ }
+ if ((count - done) & 0x1) {
+ *(u8 *)(buf + done) = fake_vmeread8(priv, addr + done, aspace,
+ cycle);
+ done += 1;
+ }
+
+out:
+ retval = count;
+
+ spin_unlock(&image->lock);
+
+ return retval;
+}
+
+void fake_vmewrite8(struct fake_driver *bridge, u8 *buf,
+ unsigned long long addr, u32 aspace, u32 cycle)
+{
+ int i;
+ unsigned long long start, end, offset;
+ u8 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if ((addr >= start) && (addr < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u8 *)((void *)bridge->slaves[i].buf_base + offset);
+ *loc = *buf;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+}
+
+void fake_vmewrite16(struct fake_driver *bridge, u16 *buf,
+ unsigned long long addr, u32 aspace, u32 cycle)
+{
+ int i;
+ unsigned long long start, end, offset;
+ u16 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if ((addr >= start) && ((addr + 1) < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u16 *)((void *)bridge->slaves[i].buf_base + offset);
+ *loc = *buf;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+}
+
+void fake_vmewrite32(struct fake_driver *bridge, u32 *buf,
+ unsigned long long addr, u32 aspace, u32 cycle)
+{
+ int i;
+ unsigned long long start, end, offset;
+ u32 *loc;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ if (aspace != bridge->slaves[i].aspace)
+ continue;
+
+ if (cycle != bridge->slaves[i].cycle)
+ continue;
+
+ start = bridge->slaves[i].vme_base;
+ end = bridge->slaves[i].vme_base + bridge->slaves[i].size;
+
+ if ((addr >= start) && ((addr + 3) < end)) {
+ offset = addr - bridge->slaves[i].vme_base;
+ loc = (u32 *)((void *)bridge->slaves[i].buf_base + offset);
+ *loc = *buf;
+
+ break;
+ }
+ }
+
+ fake_lm_check(bridge, addr, aspace, cycle);
+
+}
+
+static ssize_t fake_master_write(struct vme_master_resource *image, void *buf,
+ size_t count, loff_t offset)
+{
+ int retval = 0;
+ u32 aspace, cycle, dwidth;
+ unsigned long long addr;
+ int i;
+ unsigned int done = 0;
+ unsigned int count32;
+
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = image->parent;
+
+ bridge = fake_bridge->driver_priv;
+
+ i = image->number;
+
+ addr = bridge->masters[i].vme_base + offset;
+ aspace = bridge->masters[i].aspace;
+ cycle = bridge->masters[i].cycle;
+ dwidth = bridge->masters[i].dwidth;
+
+ spin_lock(&image->lock);
+
+ /* Here we apply for the same strategy we do in master_read
+ * function in order to assure the correct cycles.
+ */
+ if (addr & 0x1) {
+ fake_vmewrite8(bridge, (u8 *)buf, addr, aspace, cycle);
+ done += 1;
+ if (done == count)
+ goto out;
+ }
+
+ if ((dwidth == VME_D16) || (dwidth == VME_D32)) {
+ if ((addr + done) & 0x2) {
+ if ((count - done) < 2) {
+ fake_vmewrite8(bridge, (u8 *)(buf + done),
+ addr + done, aspace, cycle);
+ done += 1;
+ goto out;
+ } else {
+ fake_vmewrite16(bridge, (u16 *)(buf + done),
+ addr + done, aspace, cycle);
+ done += 2;
+ }
+ }
+ }
+
+ if (dwidth == VME_D32) {
+ count32 = (count - done) & ~0x3;
+ while (done < count32) {
+ fake_vmewrite32(bridge, (u32 *)(buf + done),
+ addr + done, aspace, cycle);
+ done += 4;
+ }
+ } else if (dwidth == VME_D16) {
+ count32 = (count - done) & ~0x3;
+ while (done < count32) {
+ fake_vmewrite16(bridge, (u16 *)(buf + done),
+ addr + done, aspace, cycle);
+ done += 2;
+ }
+ } else if (dwidth == VME_D8) {
+ count32 = (count - done);
+ while (done < count32) {
+ fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done,
+ aspace, cycle);
+ done += 1;
+ }
+
+ }
+
+ if ((dwidth == VME_D16) || (dwidth == VME_D32)) {
+ if ((count - done) & 0x2) {
+ fake_vmewrite16(bridge, (u16 *)(buf + done),
+ addr + done, aspace, cycle);
+ done += 2;
+ }
+ }
+
+ if ((count - done) & 0x1) {
+ fake_vmewrite8(bridge, (u8 *)(buf + done), addr + done, aspace,
+ cycle);
+ done += 1;
+ }
+
+out:
+ retval = count;
+
+ spin_unlock(&image->lock);
+
+ return retval;
+}
+
+/*
+ * Perform an RMW cycle on the VME bus.
+ *
+ * Requires a previously configured master window, returns final value.
+ */
+static unsigned int fake_master_rmw(struct vme_master_resource *image,
+ unsigned int mask, unsigned int compare, unsigned int swap,
+ loff_t offset)
+{
+ u32 tmp, base;
+ u32 aspace, cycle;
+ int i;
+ struct fake_driver *bridge;
+
+ bridge = image->parent->driver_priv;
+
+ /* Find the PCI address that maps to the desired VME address */
+ i = image->number;
+
+ base = bridge->masters[i].vme_base;
+ aspace = bridge->masters[i].aspace;
+ cycle = bridge->masters[i].cycle;
+
+ /* Lock image */
+ spin_lock(&image->lock);
+
+ /* Read existing value */
+ tmp = fake_vmeread32(bridge, base + offset, aspace, cycle);
+
+ /* Perform check */
+ if ((tmp && mask) == (compare && mask)) {
+ tmp = tmp | (mask | swap);
+ tmp = tmp & (~mask | swap);
+
+ /* Write back */
+ fake_vmewrite32(bridge, &tmp, base + offset, aspace, cycle);
+ }
+
+ /* Unlock image */
+ spin_unlock(&image->lock);
+
+ return tmp;
+}
+
+/*
+ * All 4 location monitors reside at the same base - this is therefore a
+ * system wide configuration.
+ *
+ * This does not enable the LM monitor - that should be done when the first
+ * callback is attached and disabled when the last callback is removed.
+ */
+static int fake_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
+ u32 aspace, u32 cycle)
+{
+ int i;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = lm->parent;
+
+ bridge = fake_bridge->driver_priv;
+
+ mutex_lock(&lm->mtx);
+
+ /* If we already have a callback attached, we can't move it! */
+ for (i = 0; i < lm->monitors; i++) {
+ if (bridge->lm_callback[i] != NULL) {
+ mutex_unlock(&lm->mtx);
+ pr_err("Location monitor callback attached, can't reset\n");
+ return -EBUSY;
+ }
+ }
+
+ switch (aspace) {
+ case VME_A16:
+ case VME_A24:
+ case VME_A32:
+ case VME_A64:
+ break;
+ default:
+ mutex_unlock(&lm->mtx);
+ pr_err("Invalid address space\n");
+ return -EINVAL;
+ }
+
+ bridge->lm_base = lm_base;
+ bridge->lm_aspace = aspace;
+ bridge->lm_cycle = cycle;
+
+ mutex_unlock(&lm->mtx);
+
+ return 0;
+}
+
+/* Get configuration of the callback monitor and return whether it is enabled
+ * or disabled.
+ */
+static int fake_lm_get(struct vme_lm_resource *lm,
+ unsigned long long *lm_base, u32 *aspace, u32 *cycle)
+{
+ struct fake_driver *bridge;
+
+ bridge = lm->parent->driver_priv;
+
+ mutex_lock(&lm->mtx);
+
+ *lm_base = bridge->lm_base;
+ *aspace = bridge->lm_aspace;
+ *cycle = bridge->lm_cycle;
+
+ mutex_unlock(&lm->mtx);
+
+ return bridge->lm_enabled;
+}
+
+/*
+ * Attach a callback to a specific location monitor.
+ *
+ * Callback will be passed the monitor triggered.
+ */
+static int fake_lm_attach(struct vme_lm_resource *lm, int monitor,
+ void (*callback)(void *), void *data)
+{
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = lm->parent;
+
+ bridge = fake_bridge->driver_priv;
+
+ mutex_lock(&lm->mtx);
+
+ /* Ensure that the location monitor is configured - need PGM or DATA */
+ if (bridge->lm_cycle == 0) {
+ mutex_unlock(&lm->mtx);
+ pr_err("Location monitor not properly configured\n");
+ return -EINVAL;
+ }
+
+ /* Check that a callback isn't already attached */
+ if (bridge->lm_callback[monitor] != NULL) {
+ mutex_unlock(&lm->mtx);
+ pr_err("Existing callback attached\n");
+ return -EBUSY;
+ }
+
+ /* Attach callback */
+ bridge->lm_callback[monitor] = callback;
+ bridge->lm_data[monitor] = data;
+
+ /* Ensure that global Location Monitor Enable set */
+ bridge->lm_enabled = 1;
+
+ mutex_unlock(&lm->mtx);
+
+ return 0;
+}
+
+/*
+ * Detach a callback function forn a specific location monitor.
+ */
+static int fake_lm_detach(struct vme_lm_resource *lm, int monitor)
+{
+ u32 tmp;
+ int i;
+ struct fake_driver *bridge;
+
+ bridge = lm->parent->driver_priv;
+
+ mutex_lock(&lm->mtx);
+
+ /* Detach callback */
+ bridge->lm_callback[monitor] = NULL;
+ bridge->lm_data[monitor] = NULL;
+
+ /* If all location monitors disabled, disable global Location Monitor */
+ tmp = 0;
+ for (i = 0; i < lm->monitors; i++) {
+ if (bridge->lm_callback[i] != NULL)
+ tmp = 1;
+ }
+
+ if (tmp == 0)
+ bridge->lm_enabled = 0;
+
+ mutex_unlock(&lm->mtx);
+
+ return 0;
+}
+
+/*
+ * Determine Geographical Addressing
+ */
+static int fake_slot_get(struct vme_bridge *fake_bridge)
+{
+ return geoid;
+}
+
+static void *fake_alloc_consistent(struct device *parent, size_t size,
+ dma_addr_t *dma)
+{
+ void *alloc = kmalloc(size, GFP_KERNEL);
+
+ if (alloc != NULL)
+ *dma = (dma_addr_t)(unsigned long)alloc;
+
+ return alloc;
+}
+
+static void fake_free_consistent(struct device *parent, size_t size,
+ void *vaddr, dma_addr_t dma)
+{
+ kfree(vaddr);
+/*
+ dma_free_coherent(parent, size, vaddr, dma);
+*/
+}
+
+/*
+ * Configure CR/CSR space
+ *
+ * Access to the CR/CSR can be configured at power-up. The location of the
+ * CR/CSR registers in the CR/CSR address space is determined by the boards
+ * Geographic address.
+ *
+ * Each board has a 512kB window, with the highest 4kB being used for the
+ * boards registers, this means there is a fix length 508kB window which must
+ * be mapped onto PCI memory.
+ */
+static int fake_crcsr_init(struct vme_bridge *fake_bridge)
+{
+ u32 vstat;
+ struct fake_driver *bridge;
+
+ bridge = fake_bridge->driver_priv;
+
+ /* Allocate mem for CR/CSR image */
+ bridge->crcsr_kernel = kzalloc(VME_CRCSR_BUF_SIZE, GFP_KERNEL);
+ bridge->crcsr_bus = (dma_addr_t)bridge->crcsr_kernel;
+ if (bridge->crcsr_kernel == NULL)
+ return -ENOMEM;
+
+ vstat = fake_slot_get(fake_bridge);
+
+ pr_info("CR/CSR Offset: %d\n", vstat);
+
+ return 0;
+}
+
+static void fake_crcsr_exit(struct vme_bridge *fake_bridge)
+{
+ struct fake_driver *bridge;
+
+ bridge = fake_bridge->driver_priv;
+
+ kfree(bridge->crcsr_kernel);
+}
+
+
+static int __init fake_init(void)
+{
+ int retval, i;
+ struct list_head *pos = NULL, *n;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *fake_device;
+ struct vme_master_resource *master_image;
+ struct vme_slave_resource *slave_image;
+ struct vme_lm_resource *lm;
+
+ /* We need a fake parent device */
+ vme_root = __root_device_register("vme", THIS_MODULE);
+
+ /* If we want to support more than one bridge at some point, we need to
+ * dynamically allocate this so we get one per device.
+ */
+ fake_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
+ if (fake_bridge == NULL) {
+ retval = -ENOMEM;
+ goto err_struct;
+ }
+
+ fake_device = kzalloc(sizeof(struct fake_driver), GFP_KERNEL);
+ if (fake_device == NULL) {
+ retval = -ENOMEM;
+ goto err_driver;
+ }
+
+ fake_bridge->driver_priv = fake_device;
+
+ fake_bridge->parent = vme_root;
+
+ fake_device->parent = fake_bridge;
+
+ /* Initialize wait queues & mutual exclusion flags */
+ mutex_init(&fake_device->vme_int);
+ mutex_init(&fake_bridge->irq_mtx);
+ tasklet_init(&fake_device->int_tasklet, fake_VIRQ_tasklet,
+ (unsigned long) fake_bridge);
+
+ strcpy(fake_bridge->name, driver_name);
+
+ /* Add master windows to list */
+ INIT_LIST_HEAD(&fake_bridge->master_resources);
+ for (i = 0; i < FAKE_MAX_MASTER; i++) {
+ master_image = kmalloc(sizeof(struct vme_master_resource),
+ GFP_KERNEL);
+ if (master_image == NULL) {
+ retval = -ENOMEM;
+ goto err_master;
+ }
+ master_image->parent = fake_bridge;
+ spin_lock_init(&master_image->lock);
+ master_image->locked = 0;
+ master_image->number = i;
+ master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
+ VME_A64;
+ master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
+ VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
+ VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
+ VME_PROG | VME_DATA;
+ master_image->width_attr = VME_D16 | VME_D32;
+ memset(&master_image->bus_resource, 0,
+ sizeof(struct resource));
+ master_image->kern_base = NULL;
+ list_add_tail(&master_image->list,
+ &fake_bridge->master_resources);
+ }
+
+ /* Add slave windows to list */
+ INIT_LIST_HEAD(&fake_bridge->slave_resources);
+ for (i = 0; i < FAKE_MAX_SLAVE; i++) {
+ slave_image = kmalloc(sizeof(struct vme_slave_resource),
+ GFP_KERNEL);
+ if (slave_image == NULL) {
+ retval = -ENOMEM;
+ goto err_slave;
+ }
+ slave_image->parent = fake_bridge;
+ mutex_init(&slave_image->mtx);
+ slave_image->locked = 0;
+ slave_image->number = i;
+ slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
+ VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
+ VME_USER3 | VME_USER4;
+ slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
+ VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
+ VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
+ VME_PROG | VME_DATA;
+ list_add_tail(&slave_image->list,
+ &fake_bridge->slave_resources);
+ }
+
+ /* Add location monitor to list */
+ INIT_LIST_HEAD(&fake_bridge->lm_resources);
+ lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
+ if (lm == NULL) {
+ pr_err("Failed to allocate memory for location monitor resource structure\n");
+ retval = -ENOMEM;
+ goto err_lm;
+ }
+ lm->parent = fake_bridge;
+ mutex_init(&lm->mtx);
+ lm->locked = 0;
+ lm->number = 1;
+ lm->monitors = 4;
+ list_add_tail(&lm->list, &fake_bridge->lm_resources);
+
+ fake_bridge->slave_get = fake_slave_get;
+ fake_bridge->slave_set = fake_slave_set;
+ fake_bridge->master_get = fake_master_get;
+ fake_bridge->master_set = fake_master_set;
+ fake_bridge->master_read = fake_master_read;
+ fake_bridge->master_write = fake_master_write;
+ fake_bridge->master_rmw = fake_master_rmw;
+ fake_bridge->irq_set = fake_irq_set;
+ fake_bridge->irq_generate = fake_irq_generate;
+ fake_bridge->lm_set = fake_lm_set;
+ fake_bridge->lm_get = fake_lm_get;
+ fake_bridge->lm_attach = fake_lm_attach;
+ fake_bridge->lm_detach = fake_lm_detach;
+ fake_bridge->slot_get = fake_slot_get;
+ fake_bridge->alloc_consistent = fake_alloc_consistent;
+ fake_bridge->free_consistent = fake_free_consistent;
+
+ pr_info("Board is%s the VME system controller\n",
+ (geoid == 1) ? "" : " not");
+
+ pr_info("VME geographical address is set to %d\n", geoid);
+
+ retval = fake_crcsr_init(fake_bridge);
+ if (retval) {
+ pr_err("CR/CSR configuration failed.\n");
+ goto err_crcsr;
+ }
+
+ retval = vme_register_bridge(fake_bridge);
+ if (retval != 0) {
+ pr_err("Chip Registration failed.\n");
+ goto err_reg;
+ }
+
+ exit_pointer = fake_bridge;
+
+ return 0;
+
+err_reg:
+ fake_crcsr_exit(fake_bridge);
+err_crcsr:
+err_lm:
+ /* resources are stored in link list */
+ list_for_each_safe(pos, n, &fake_bridge->lm_resources) {
+ lm = list_entry(pos, struct vme_lm_resource, list);
+ list_del(pos);
+ kfree(lm);
+ }
+err_slave:
+ /* resources are stored in link list */
+ list_for_each_safe(pos, n, &fake_bridge->slave_resources) {
+ slave_image = list_entry(pos, struct vme_slave_resource, list);
+ list_del(pos);
+ kfree(slave_image);
+ }
+err_master:
+ /* resources are stored in link list */
+ list_for_each_safe(pos, n, &fake_bridge->master_resources) {
+ master_image = list_entry(pos, struct vme_master_resource,
+ list);
+ list_del(pos);
+ kfree(master_image);
+ }
+
+ kfree(fake_device);
+err_driver:
+ kfree(fake_bridge);
+err_struct:
+ return retval;
+
+}
+
+
+static void __exit fake_exit(void)
+{
+ struct list_head *pos = NULL;
+ struct list_head *tmplist;
+ struct vme_master_resource *master_image;
+ struct vme_slave_resource *slave_image;
+ int i;
+ struct vme_bridge *fake_bridge;
+ struct fake_driver *bridge;
+
+ fake_bridge = exit_pointer;
+
+ bridge = fake_bridge->driver_priv;
+
+ pr_debug("Driver is being unloaded.\n");
+
+ /*
+ * Shutdown all inbound and outbound windows.
+ */
+ for (i = 0; i < FAKE_MAX_MASTER; i++)
+ bridge->masters[i].enabled = 0;
+
+ for (i = 0; i < FAKE_MAX_SLAVE; i++)
+ bridge->slaves[i].enabled = 0;
+
+ /*
+ * Shutdown Location monitor.
+ */
+ bridge->lm_enabled = 0;
+
+ vme_unregister_bridge(fake_bridge);
+
+ fake_crcsr_exit(fake_bridge);
+ /* resources are stored in link list */
+ list_for_each_safe(pos, tmplist, &fake_bridge->slave_resources) {
+ slave_image = list_entry(pos, struct vme_slave_resource, list);
+ list_del(pos);
+ kfree(slave_image);
+ }
+
+ /* resources are stored in link list */
+ list_for_each_safe(pos, tmplist, &fake_bridge->master_resources) {
+ master_image = list_entry(pos, struct vme_master_resource,
+ list);
+ list_del(pos);
+ kfree(master_image);
+ }
+
+ kfree(fake_bridge->driver_priv);
+
+ kfree(fake_bridge);
+
+ root_device_unregister(vme_root);
+}
+
+
+MODULE_PARM_DESC(geoid, "Set geographical addressing");
+module_param(geoid, int, 0);
+
+MODULE_DESCRIPTION("Fake VME bridge driver");
+MODULE_LICENSE("GPL");
+
+module_init(fake_init);
+module_exit(fake_exit);
{ },
};
+MODULE_DEVICE_TABLE(pci, tsi148_ids);
+
static struct pci_driver tsi148_driver = {
.name = driver_name,
.id_table = tsi148_ids,
for (i = 0; i < 4; i++) {
if (stat & TSI148_LCSR_INTS_LMS[i]) {
/* We only enable interrupts if the callback is set */
- bridge->lm_callback[i](i);
+ bridge->lm_callback[i](bridge->lm_data[i]);
serviced |= TSI148_LCSR_INTC_LMC[i];
}
}
* Callback will be passed the monitor triggered.
*/
static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
- void (*callback)(int))
+ void (*callback)(void *), void *data)
{
u32 lm_ctl, tmp;
struct vme_bridge *tsi148_bridge;
/* Attach callback */
bridge->lm_callback[monitor] = callback;
+ bridge->lm_data[monitor] = data;
/* Enable Location Monitor interrupt */
tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
/* Detach callback */
bridge->lm_callback[monitor] = NULL;
+ bridge->lm_data[monitor] = NULL;
/* If all location monitors disabled, disable global Location Monitor */
if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
void __iomem *base; /* Base Address of device registers */
wait_queue_head_t dma_queue[2];
wait_queue_head_t iack_queue;
- void (*lm_callback[4])(int); /* Called in interrupt handler */
+ void (*lm_callback[4])(void *); /* Called in interrupt handler */
+ void *lm_data[4];
void *crcsr_kernel;
dma_addr_t crcsr_bus;
struct vme_master_resource *flush_image;
* option) any later version.
*/
-#include <linux/module.h>
-#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/export.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <linux/kernel.h>
static LIST_HEAD(vme_bus_list);
static DEFINE_MUTEX(vme_buses_lock);
-static void __exit vme_exit(void);
static int __init vme_init(void);
static struct vme_dev *dev_to_vme_dev(struct device *dev)
EXPORT_SYMBOL(vme_lm_get);
int vme_lm_attach(struct vme_resource *resource, int monitor,
- void (*callback)(int))
+ void (*callback)(void *), void *data)
{
struct vme_bridge *bridge = find_bridge(resource);
struct vme_lm_resource *lm;
return -EINVAL;
}
- return bridge->lm_attach(lm, monitor, callback);
+ return bridge->lm_attach(lm, monitor, callback, data);
}
EXPORT_SYMBOL(vme_lm_attach);
return retval;
}
-static int vme_bus_remove(struct device *dev)
-{
- int retval = -ENODEV;
- struct vme_driver *driver;
- struct vme_dev *vdev = dev_to_vme_dev(dev);
-
- driver = dev->platform_data;
-
- if (driver->remove != NULL)
- retval = driver->remove(vdev);
-
- return retval;
-}
-
struct bus_type vme_bus_type = {
.name = "vme",
.match = vme_bus_match,
.probe = vme_bus_probe,
- .remove = vme_bus_remove,
};
EXPORT_SYMBOL(vme_bus_type);
{
return bus_register(&vme_bus_type);
}
-
-static void __exit vme_exit(void)
-{
- bus_unregister(&vme_bus_type);
-}
-
subsys_initcall(vme_init);
-module_exit(vme_exit);
int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32);
int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *,
u32 *);
- int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
+ int (*lm_attach)(struct vme_lm_resource *, int,
+ void (*callback)(void *), void *);
int (*lm_detach) (struct vme_lm_resource *, int);
/* CR/CSR space functions */
/* return the address of the refcnt in the family data */
#define THERM_REFCNT(family_data) \
- (&((struct w1_therm_family_data*)family_data)->refcnt)
+ (&((struct w1_therm_family_data *)family_data)->refcnt)
static int w1_therm_add_slave(struct w1_slave *sl)
{
static void w1_therm_remove_slave(struct w1_slave *sl)
{
int refcnt = atomic_sub_return(1, THERM_REFCNT(sl->family_data));
- while(refcnt) {
+
+ while (refcnt) {
msleep(1000);
refcnt = atomic_read(THERM_REFCNT(sl->family_data));
}
.fops = &w1_therm_fops,
};
-struct w1_therm_family_converter
-{
+struct w1_therm_family_converter {
u8 broken;
u16 reserved;
struct w1_family *f;
uint8_t precision_bits;
uint8_t mask = 0x60;
- if(val > 12 || val < 9) {
+ if (val > 12 || val < 9) {
pr_warn("Unsupported precision\n");
return -1;
}
/* read values to only alter precision bits */
w1_write_8(dev, W1_READ_SCRATCHPAD);
- if ((count = w1_read_block(dev, rom, 9)) != 9)
+ count = w1_read_block(dev, rom, 9);
+ if (count != 9)
dev_warn(device, "w1_read_block() returned %u instead of 9.\n", count);
crc = w1_calc_crc8(rom, 8);
static inline int w1_DS18B20_convert_temp(u8 rom[9])
{
s16 t = le16_to_cpup((__le16 *)rom);
+
return t*1000/16;
}
for (i = 0; i < ARRAY_SIZE(w1_therm_families); ++i) {
if (w1_therm_families[i].f->fid == sl->family->fid) {
/* zero value indicates to write current configuration to eeprom */
- if (0 == val)
+ if (val == 0)
ret = w1_therm_families[i].eeprom(device);
else
ret = w1_therm_families[i].precision(device, val);
if (ret != 0)
goto post_unlock;
- if(!sl->family_data)
- {
+ if (!sl->family_data) {
ret = -ENODEV;
goto pre_unlock;
}
if (!w1_reset_select_slave(sl)) {
w1_write_8(dev, W1_READ_SCRATCHPAD);
- if ((count = w1_read_block(dev, rom, 9)) != 9) {
+ count = w1_read_block(dev, rom, 9);
+ if (count != 9) {
dev_warn(device, "w1_read_block() "
"returned %u instead of 9.\n",
count);
module_param_named(timeout, w1_timeout, int, 0);
MODULE_PARM_DESC(timeout, "time in seconds between automatic slave searches");
module_param_named(timeout_us, w1_timeout_us, int, 0);
-MODULE_PARM_DESC(timeout, "time in microseconds between automatic slave"
- " searches");
+MODULE_PARM_DESC(timeout_us,
+ "time in microseconds between automatic slave searches");
/* A search stops when w1_max_slave_count devices have been found in that
* search. The next search will start over and detect the same set of devices
* on a static 1-wire bus. Memory is not allocated based on this number, just
int (*cpu_id)(struct coresight_device *csdev);
int (*trace_id)(struct coresight_device *csdev);
int (*enable)(struct coresight_device *csdev,
- struct perf_event_attr *attr, u32 mode);
- void (*disable)(struct coresight_device *csdev);
+ struct perf_event *event, u32 mode);
+ void (*disable)(struct coresight_device *csdev,
+ struct perf_event *event);
};
struct coresight_ops {
HV_SIGNAL_POLICY_EXPLICIT,
};
+enum hv_numa_policy {
+ HV_BALANCED = 0,
+ HV_LOCALIZED,
+};
+
enum vmbus_device_type {
HV_IDE = 0,
HV_SCSI,
* ring lock to preserve the current behavior.
*/
bool acquire_ring_lock;
+ /*
+ * For performance critical channels (storage, networking
+ * etc,), Hyper-V has a mechanism to enhance the throughput
+ * at the expense of latency:
+ * When the host is to be signaled, we just set a bit in a shared page
+ * and this bit will be inspected by the hypervisor within a certain
+ * window and if the bit is set, the host will be signaled. The window
+ * of time is the monitor latency - currently around 100 usecs. This
+ * mechanism improves throughput by:
+ *
+ * A) Making the host more efficient - each time it wakes up,
+ * potentially it will process morev number of packets. The
+ * monitor latency allows a batch to build up.
+ * B) By deferring the hypercall to signal, we will also minimize
+ * the interrupts.
+ *
+ * Clearly, these optimizations improve throughput at the expense of
+ * latency. Furthermore, since the channel is shared for both
+ * control and data messages, control messages currently suffer
+ * unnecessary latency adversley impacting performance and boot
+ * time. To fix this issue, permit tagging the channel as being
+ * in "low latency" mode. In this mode, we will bypass the monitor
+ * mechanism.
+ */
+ bool low_latency;
+
+ /*
+ * NUMA distribution policy:
+ * We support teo policies:
+ * 1) Balanced: Here all performance critical channels are
+ * distributed evenly amongst all the NUMA nodes.
+ * This policy will be the default policy.
+ * 2) Localized: All channels of a given instance of a
+ * performance critical service will be assigned CPUs
+ * within a selected NUMA node.
+ */
+ enum hv_numa_policy affinity_policy;
};
c->signal_policy = policy;
}
+static inline void set_channel_affinity_state(struct vmbus_channel *c,
+ enum hv_numa_policy policy)
+{
+ c->affinity_policy = policy;
+}
+
static inline void set_channel_read_state(struct vmbus_channel *c, bool state)
{
c->batched_reading = state;
c->outbound.ring_buffer->pending_send_sz = size;
}
+static inline void set_low_latency_mode(struct vmbus_channel *c)
+{
+ c->low_latency = true;
+}
+
+static inline void clear_low_latency_mode(struct vmbus_channel *c)
+{
+ c->low_latency = false;
+}
+
void vmbus_onmessage(void *context);
int vmbus_request_offers(void);
.guid = UUID_LE(0x44c4f61d, 0x4444, 0x4400, 0x9d, 0x52, \
0x80, 0x2e, 0x27, 0xed, 0xe1, 0x9f)
+/*
+ * Linux doesn't support the 3 devices: the first two are for
+ * Automatic Virtual Machine Activation, and the third is for
+ * Remote Desktop Virtualization.
+ * {f8e65716-3cb3-4a06-9a60-1889c5cccab5}
+ * {3375baf4-9e15-4b30-b765-67acb10d607b}
+ * {276aacf4-ac15-426c-98dd-7521ad3f01fe}
+ */
+
+#define HV_AVMA1_GUID \
+ .guid = UUID_LE(0xf8e65716, 0x3cb3, 0x4a06, 0x9a, 0x60, \
+ 0x18, 0x89, 0xc5, 0xcc, 0xca, 0xb5)
+
+#define HV_AVMA2_GUID \
+ .guid = UUID_LE(0x3375baf4, 0x9e15, 0x4b30, 0xb7, 0x65, \
+ 0x67, 0xac, 0xb1, 0x0d, 0x60, 0x7b)
+
+#define HV_RDV_GUID \
+ .guid = UUID_LE(0x276aacf4, 0xac15, 0x426c, 0x98, 0xdd, \
+ 0x75, 0x21, 0xad, 0x3f, 0x01, 0xfe)
+
/*
* Common header for Hyper-V ICs
*/
u8 flags;
} __packed;
+struct ictimesync_ref_data {
+ u64 parenttime;
+ u64 vmreferencetime;
+ u8 flags;
+ char leapflags;
+ char stratum;
+ u8 reserved[3];
+} __packed;
+
struct hyperv_service_callback {
u8 msg_type;
char *log_msg;
struct icmsg_negotiate *, u8 *, int,
int);
+void hv_event_tasklet_disable(struct vmbus_channel *channel);
+void hv_event_tasklet_enable(struct vmbus_channel *channel);
+
void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid);
/*
char name[CHAMELEON_FILENAME_LEN + 1];
int (*get_irq)(struct mcb_device *dev);
};
-#define to_mcb_bus(b) container_of((b), struct mcb_bus, dev)
+
+static inline struct mcb_bus *to_mcb_bus(struct device *dev)
+{
+ return container_of(dev, struct mcb_bus, dev);
+}
/**
* struct mcb_device - MEN Chameleon Bus device
*
- * @bus_list: internal list handling for bus code
* @dev: device in kernel representation
* @bus: mcb bus the device is plugged to
- * @subordinate: subordinate MCBus in case of bridge
* @is_added: flag to check if device is added to bus
* @driver: associated mcb_driver
* @id: mcb device id
* @memory: memory resource
*/
struct mcb_device {
- struct list_head bus_list;
struct device dev;
struct mcb_bus *bus;
- struct mcb_bus *subordinate;
bool is_added;
struct mcb_driver *driver;
u16 id;
struct resource irq;
struct resource mem;
};
-#define to_mcb_device(x) container_of((x), struct mcb_device, dev)
+
+static inline struct mcb_device *to_mcb_device(struct device *dev)
+{
+ return container_of(dev, struct mcb_device, dev);
+}
/**
* struct mcb_driver - MEN Chameleon Bus device driver
void (*remove)(struct mcb_device *mdev);
void (*shutdown)(struct mcb_device *mdev);
};
-#define to_mcb_driver(x) container_of((x), struct mcb_driver, driver)
+
+static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv)
+{
+ return container_of(drv, struct mcb_driver, driver);
+}
static inline void *mcb_get_drvdata(struct mcb_device *dev)
{
#include <linux/major.h>
#include <linux/list.h>
#include <linux/types.h>
+#include <linux/device.h>
/*
* These allocations are managed by device@lanana.org. If you use an
extern int misc_register(struct miscdevice *misc);
extern void misc_deregister(struct miscdevice *misc);
+/*
+ * Helper macro for drivers that don't do anything special in module init / exit
+ * call. This helps in eleminating of boilerplate code.
+ */
+#define module_misc_device(__misc_device) \
+ module_driver(__misc_device, misc_register, misc_deregister)
+
#define MODULE_ALIAS_MISCDEV(minor) \
MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \
"-" __stringify(minor))
int vme_lm_count(struct vme_resource *);
int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32);
int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *);
-int vme_lm_attach(struct vme_resource *, int, void (*callback)(int));
+int vme_lm_attach(struct vme_resource *, int, void (*callback)(void *), void *);
int vme_lm_detach(struct vme_resource *, int);
void vme_lm_free(struct vme_resource *);
-#!/usr/bin/env python2
+#!/usr/bin/env python3
"""Find Kconfig symbols that are referenced but not defined."""
-# (c) 2014-2015 Valentin Rothberg <valentinrothberg@gmail.com>
+# (c) 2014-2016 Valentin Rothberg <valentinrothberg@gmail.com>
# (c) 2014 Stefan Hengelein <stefan.hengelein@fau.de>
#
# Licensed under the terms of the GNU GPL License version 2
+import argparse
import difflib
import os
import re
import signal
+import subprocess
import sys
from multiprocessing import Pool, cpu_count
-from optparse import OptionParser
-from subprocess import Popen, PIPE, STDOUT
# regex expressions
OPERATORS = r"&|\(|\)|\||\!"
-FEATURE = r"(?:\w*[A-Z0-9]\w*){2,}"
-DEF = r"^\s*(?:menu){,1}config\s+(" + FEATURE + r")\s*"
-EXPR = r"(?:" + OPERATORS + r"|\s|" + FEATURE + r")+"
+SYMBOL = r"(?:\w*[A-Z0-9]\w*){2,}"
+DEF = r"^\s*(?:menu){,1}config\s+(" + SYMBOL + r")\s*"
+EXPR = r"(?:" + OPERATORS + r"|\s|" + SYMBOL + r")+"
DEFAULT = r"default\s+.*?(?:if\s.+){,1}"
STMT = r"^\s*(?:if|select|depends\s+on|(?:" + DEFAULT + r"))\s+" + EXPR
-SOURCE_FEATURE = r"(?:\W|\b)+[D]{,1}CONFIG_(" + FEATURE + r")"
+SOURCE_SYMBOL = r"(?:\W|\b)+[D]{,1}CONFIG_(" + SYMBOL + r")"
# regex objects
REGEX_FILE_KCONFIG = re.compile(r".*Kconfig[\.\w+\-]*$")
-REGEX_FEATURE = re.compile(r'(?!\B)' + FEATURE + r'(?!\B)')
-REGEX_SOURCE_FEATURE = re.compile(SOURCE_FEATURE)
+REGEX_SYMBOL = re.compile(r'(?!\B)' + SYMBOL + r'(?!\B)')
+REGEX_SOURCE_SYMBOL = re.compile(SOURCE_SYMBOL)
REGEX_KCONFIG_DEF = re.compile(DEF)
REGEX_KCONFIG_EXPR = re.compile(EXPR)
REGEX_KCONFIG_STMT = re.compile(STMT)
REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
-REGEX_FILTER_FEATURES = re.compile(r"[A-Za-z0-9]$")
+REGEX_FILTER_SYMBOLS = re.compile(r"[A-Za-z0-9]$")
REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
REGEX_QUOTES = re.compile("(\"(.*?)\")")
def parse_options():
"""The user interface of this module."""
- usage = "%prog [options]\n\n" \
- "Run this tool to detect Kconfig symbols that are referenced but " \
- "not defined in\nKconfig. The output of this tool has the " \
- "format \'Undefined symbol\\tFile list\'\n\n" \
- "If no option is specified, %prog will default to check your\n" \
- "current tree. Please note that specifying commits will " \
- "\'git reset --hard\'\nyour current tree! You may save " \
- "uncommitted changes to avoid losing data."
-
- parser = OptionParser(usage=usage)
-
- parser.add_option('-c', '--commit', dest='commit', action='store',
- default="",
- help="Check if the specified commit (hash) introduces "
- "undefined Kconfig symbols.")
-
- parser.add_option('-d', '--diff', dest='diff', action='store',
- default="",
- help="Diff undefined symbols between two commits. The "
- "input format bases on Git log's "
- "\'commmit1..commit2\'.")
-
- parser.add_option('-f', '--find', dest='find', action='store_true',
- default=False,
- help="Find and show commits that may cause symbols to be "
- "missing. Required to run with --diff.")
-
- parser.add_option('-i', '--ignore', dest='ignore', action='store',
- default="",
- help="Ignore files matching this pattern. Note that "
- "the pattern needs to be a Python regex. To "
- "ignore defconfigs, specify -i '.*defconfig'.")
-
- parser.add_option('-s', '--sim', dest='sim', action='store', default="",
- help="Print a list of maximum 10 string-similar symbols.")
-
- parser.add_option('', '--force', dest='force', action='store_true',
- default=False,
- help="Reset current Git tree even when it's dirty.")
-
- (opts, _) = parser.parse_args()
-
- if opts.commit and opts.diff:
+ usage = "Run this tool to detect Kconfig symbols that are referenced but " \
+ "not defined in Kconfig. If no option is specified, " \
+ "checkkconfigsymbols defaults to check your current tree. " \
+ "Please note that specifying commits will 'git reset --hard\' " \
+ "your current tree! You may save uncommitted changes to avoid " \
+ "losing data."
+
+ parser = argparse.ArgumentParser(description=usage)
+
+ parser.add_argument('-c', '--commit', dest='commit', action='store',
+ default="",
+ help="check if the specified commit (hash) introduces "
+ "undefined Kconfig symbols")
+
+ parser.add_argument('-d', '--diff', dest='diff', action='store',
+ default="",
+ help="diff undefined symbols between two commits "
+ "(e.g., -d commmit1..commit2)")
+
+ parser.add_argument('-f', '--find', dest='find', action='store_true',
+ default=False,
+ help="find and show commits that may cause symbols to be "
+ "missing (required to run with --diff)")
+
+ parser.add_argument('-i', '--ignore', dest='ignore', action='store',
+ default="",
+ help="ignore files matching this Python regex "
+ "(e.g., -i '.*defconfig')")
+
+ parser.add_argument('-s', '--sim', dest='sim', action='store', default="",
+ help="print a list of max. 10 string-similar symbols")
+
+ parser.add_argument('--force', dest='force', action='store_true',
+ default=False,
+ help="reset current Git tree even when it's dirty")
+
+ parser.add_argument('--no-color', dest='color', action='store_false',
+ default=True,
+ help="don't print colored output (default when not "
+ "outputting to a terminal)")
+
+ args = parser.parse_args()
+
+ if args.commit and args.diff:
sys.exit("Please specify only one option at once.")
- if opts.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", opts.diff):
+ if args.diff and not re.match(r"^[\w\-\.]+\.\.[\w\-\.]+$", args.diff):
sys.exit("Please specify valid input in the following format: "
"\'commit1..commit2\'")
- if opts.commit or opts.diff:
- if not opts.force and tree_is_dirty():
+ if args.commit or args.diff:
+ if not args.force and tree_is_dirty():
sys.exit("The current Git tree is dirty (see 'git status'). "
"Running this script may\ndelete important data since it "
"calls 'git reset --hard' for some performance\nreasons. "
"'--force' if you\nwant to ignore this warning and "
"continue.")
- if opts.commit:
- opts.find = False
+ if args.commit:
+ args.find = False
- if opts.ignore:
+ if args.ignore:
try:
- re.match(opts.ignore, "this/is/just/a/test.c")
+ re.match(args.ignore, "this/is/just/a/test.c")
except:
sys.exit("Please specify a valid Python regex.")
- return opts
+ return args
def main():
"""Main function of this module."""
- opts = parse_options()
+ args = parse_options()
- if opts.sim and not opts.commit and not opts.diff:
- sims = find_sims(opts.sim, opts.ignore)
+ global COLOR
+ COLOR = args.color and sys.stdout.isatty()
+
+ if args.sim and not args.commit and not args.diff:
+ sims = find_sims(args.sim, args.ignore)
if sims:
- print "%s: %s" % (yel("Similar symbols"), ', '.join(sims))
+ print("%s: %s" % (yel("Similar symbols"), ', '.join(sims)))
else:
- print "%s: no similar symbols found" % yel("Similar symbols")
+ print("%s: no similar symbols found" % yel("Similar symbols"))
sys.exit(0)
# dictionary of (un)defined symbols
defined = {}
undefined = {}
- if opts.commit or opts.diff:
+ if args.commit or args.diff:
head = get_head()
# get commit range
commit_a = None
commit_b = None
- if opts.commit:
- commit_a = opts.commit + "~"
- commit_b = opts.commit
- elif opts.diff:
- split = opts.diff.split("..")
+ if args.commit:
+ commit_a = args.commit + "~"
+ commit_b = args.commit
+ elif args.diff:
+ split = args.diff.split("..")
commit_a = split[0]
commit_b = split[1]
undefined_a = {}
undefined_b = {}
# get undefined items before the commit
- execute("git reset --hard %s" % commit_a)
- undefined_a, _ = check_symbols(opts.ignore)
+ reset(commit_a)
+ undefined_a, _ = check_symbols(args.ignore)
# get undefined items for the commit
- execute("git reset --hard %s" % commit_b)
- undefined_b, defined = check_symbols(opts.ignore)
+ reset(commit_b)
+ undefined_b, defined = check_symbols(args.ignore)
# report cases that are present for the commit but not before
- for feature in sorted(undefined_b):
- # feature has not been undefined before
- if not feature in undefined_a:
- files = sorted(undefined_b.get(feature))
- undefined[feature] = files
- # check if there are new files that reference the undefined feature
+ for symbol in sorted(undefined_b):
+ # symbol has not been undefined before
+ if symbol not in undefined_a:
+ files = sorted(undefined_b.get(symbol))
+ undefined[symbol] = files
+ # check if there are new files that reference the undefined symbol
else:
- files = sorted(undefined_b.get(feature) -
- undefined_a.get(feature))
+ files = sorted(undefined_b.get(symbol) -
+ undefined_a.get(symbol))
if files:
- undefined[feature] = files
+ undefined[symbol] = files
# reset to head
- execute("git reset --hard %s" % head)
+ reset(head)
# default to check the entire tree
else:
- undefined, defined = check_symbols(opts.ignore)
+ undefined, defined = check_symbols(args.ignore)
# now print the output
- for feature in sorted(undefined):
- print red(feature)
+ for symbol in sorted(undefined):
+ print(red(symbol))
- files = sorted(undefined.get(feature))
- print "%s: %s" % (yel("Referencing files"), ", ".join(files))
+ files = sorted(undefined.get(symbol))
+ print("%s: %s" % (yel("Referencing files"), ", ".join(files)))
- sims = find_sims(feature, opts.ignore, defined)
+ sims = find_sims(symbol, args.ignore, defined)
sims_out = yel("Similar symbols")
if sims:
- print "%s: %s" % (sims_out, ', '.join(sims))
+ print("%s: %s" % (sims_out, ', '.join(sims)))
else:
- print "%s: %s" % (sims_out, "no similar symbols found")
+ print("%s: %s" % (sims_out, "no similar symbols found"))
- if opts.find:
- print "%s:" % yel("Commits changing symbol")
- commits = find_commits(feature, opts.diff)
+ if args.find:
+ print("%s:" % yel("Commits changing symbol"))
+ commits = find_commits(symbol, args.diff)
if commits:
for commit in commits:
commit = commit.split(" ", 1)
- print "\t- %s (\"%s\")" % (yel(commit[0]), commit[1])
+ print("\t- %s (\"%s\")" % (yel(commit[0]), commit[1]))
else:
- print "\t- no commit found"
- print # new line
+ print("\t- no commit found")
+ print() # new line
+
+
+def reset(commit):
+ """Reset current git tree to %commit."""
+ execute(["git", "reset", "--hard", commit])
def yel(string):
"""
Color %string yellow.
"""
- return "\033[33m%s\033[0m" % string
+ return "\033[33m%s\033[0m" % string if COLOR else string
def red(string):
"""
Color %string red.
"""
- return "\033[31m%s\033[0m" % string
+ return "\033[31m%s\033[0m" % string if COLOR else string
def execute(cmd):
"""Execute %cmd and return stdout. Exit in case of error."""
- pop = Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True)
- (stdout, _) = pop.communicate() # wait until finished
- if pop.returncode != 0:
- sys.exit(stdout)
+ try:
+ stdout = subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=False)
+ stdout = stdout.decode(errors='replace')
+ except subprocess.CalledProcessError as fail:
+ exit(fail)
return stdout
def find_commits(symbol, diff):
"""Find commits changing %symbol in the given range of %diff."""
- commits = execute("git log --pretty=oneline --abbrev-commit -G %s %s"
- % (symbol, diff))
+ commits = execute(["git", "log", "--pretty=oneline",
+ "--abbrev-commit", "-G",
+ symbol, diff])
return [x for x in commits.split("\n") if x]
def tree_is_dirty():
"""Return true if the current working tree is dirty (i.e., if any file has
been added, deleted, modified, renamed or copied but not committed)."""
- stdout = execute("git status --porcelain")
+ stdout = execute(["git", "status", "--porcelain"])
for line in stdout:
if re.findall(r"[URMADC]{1}", line[:2]):
return True
def get_head():
"""Return commit hash of current HEAD."""
- stdout = execute("git rev-parse HEAD")
+ stdout = execute(["git", "rev-parse", "HEAD"])
return stdout.strip('\n')
def partition(lst, size):
"""Partition list @lst into eveni-sized lists of size @size."""
- return [lst[i::size] for i in xrange(size)]
+ return [lst[i::size] for i in range(size)]
def init_worker():
signal.signal(signal.SIGINT, signal.SIG_IGN)
-def find_sims(symbol, ignore, defined = []):
+def find_sims(symbol, ignore, defined=[]):
"""Return a list of max. ten Kconfig symbols that are string-similar to
@symbol."""
if defined:
def get_files():
"""Return a list of all files in the current git directory."""
# use 'git ls-files' to get the worklist
- stdout = execute("git ls-files")
+ stdout = execute(["git", "ls-files"])
if len(stdout) > 0 and stdout[-1] == "\n":
stdout = stdout[:-1]
check_symbols() in order to properly terminate running worker processes."""
source_files = []
kconfig_files = []
- defined_features = []
- referenced_features = dict() # {file: [features]}
+ defined_symbols = []
+ referenced_symbols = dict() # {file: [symbols]}
for gitfile in get_files():
if REGEX_FILE_KCONFIG.match(gitfile):
# parse source files
arglist = partition(source_files, cpu_count())
for res in pool.map(parse_source_files, arglist):
- referenced_features.update(res)
-
+ referenced_symbols.update(res)
# parse kconfig files
arglist = []
for part in partition(kconfig_files, cpu_count()):
arglist.append((part, ignore))
for res in pool.map(parse_kconfig_files, arglist):
- defined_features.extend(res[0])
- referenced_features.update(res[1])
- defined_features = set(defined_features)
+ defined_symbols.extend(res[0])
+ referenced_symbols.update(res[1])
+ defined_symbols = set(defined_symbols)
- # inverse mapping of referenced_features to dict(feature: [files])
+ # inverse mapping of referenced_symbols to dict(symbol: [files])
inv_map = dict()
- for _file, features in referenced_features.iteritems():
- for feature in features:
- inv_map[feature] = inv_map.get(feature, set())
- inv_map[feature].add(_file)
- referenced_features = inv_map
-
- undefined = {} # {feature: [files]}
- for feature in sorted(referenced_features):
+ for _file, symbols in referenced_symbols.items():
+ for symbol in symbols:
+ inv_map[symbol] = inv_map.get(symbol, set())
+ inv_map[symbol].add(_file)
+ referenced_symbols = inv_map
+
+ undefined = {} # {symbol: [files]}
+ for symbol in sorted(referenced_symbols):
# filter some false positives
- if feature == "FOO" or feature == "BAR" or \
- feature == "FOO_BAR" or feature == "XXX":
+ if symbol == "FOO" or symbol == "BAR" or \
+ symbol == "FOO_BAR" or symbol == "XXX":
continue
- if feature not in defined_features:
- if feature.endswith("_MODULE"):
+ if symbol not in defined_symbols:
+ if symbol.endswith("_MODULE"):
# avoid false positives for kernel modules
- if feature[:-len("_MODULE")] in defined_features:
+ if symbol[:-len("_MODULE")] in defined_symbols:
continue
- undefined[feature] = referenced_features.get(feature)
- return undefined, defined_features
+ undefined[symbol] = referenced_symbols.get(symbol)
+ return undefined, defined_symbols
def parse_source_files(source_files):
"""Parse each source file in @source_files and return dictionary with source
files as keys and lists of references Kconfig symbols as values."""
- referenced_features = dict()
+ referenced_symbols = dict()
for sfile in source_files:
- referenced_features[sfile] = parse_source_file(sfile)
- return referenced_features
+ referenced_symbols[sfile] = parse_source_file(sfile)
+ return referenced_symbols
def parse_source_file(sfile):
- """Parse @sfile and return a list of referenced Kconfig features."""
+ """Parse @sfile and return a list of referenced Kconfig symbols."""
lines = []
references = []
if not os.path.exists(sfile):
return references
- with open(sfile, "r") as stream:
+ with open(sfile, "r", encoding='utf-8', errors='replace') as stream:
lines = stream.readlines()
for line in lines:
- if not "CONFIG_" in line:
+ if "CONFIG_" not in line:
continue
- features = REGEX_SOURCE_FEATURE.findall(line)
- for feature in features:
- if not REGEX_FILTER_FEATURES.search(feature):
+ symbols = REGEX_SOURCE_SYMBOL.findall(line)
+ for symbol in symbols:
+ if not REGEX_FILTER_SYMBOLS.search(symbol):
continue
- references.append(feature)
+ references.append(symbol)
return references
-def get_features_in_line(line):
- """Return mentioned Kconfig features in @line."""
- return REGEX_FEATURE.findall(line)
+def get_symbols_in_line(line):
+ """Return mentioned Kconfig symbols in @line."""
+ return REGEX_SYMBOL.findall(line)
def parse_kconfig_files(args):
pattern."""
kconfig_files = args[0]
ignore = args[1]
- defined_features = []
- referenced_features = dict()
+ defined_symbols = []
+ referenced_symbols = dict()
for kfile in kconfig_files:
defined, references = parse_kconfig_file(kfile)
- defined_features.extend(defined)
+ defined_symbols.extend(defined)
if ignore and re.match(ignore, kfile):
# do not collect references for files that match the ignore pattern
continue
- referenced_features[kfile] = references
- return (defined_features, referenced_features)
+ referenced_symbols[kfile] = references
+ return (defined_symbols, referenced_symbols)
def parse_kconfig_file(kfile):
- """Parse @kfile and update feature definitions and references."""
+ """Parse @kfile and update symbol definitions and references."""
lines = []
defined = []
references = []
if not os.path.exists(kfile):
return defined, references
- with open(kfile, "r") as stream:
+ with open(kfile, "r", encoding='utf-8', errors='replace') as stream:
lines = stream.readlines()
for i in range(len(lines)):
line = line.split("#")[0] # ignore comments
if REGEX_KCONFIG_DEF.match(line):
- feature_def = REGEX_KCONFIG_DEF.findall(line)
- defined.append(feature_def[0])
+ symbol_def = REGEX_KCONFIG_DEF.findall(line)
+ defined.append(symbol_def[0])
skip = False
elif REGEX_KCONFIG_HELP.match(line):
skip = True
pass
elif REGEX_KCONFIG_STMT.match(line):
line = REGEX_QUOTES.sub("", line)
- features = get_features_in_line(line)
+ symbols = get_symbols_in_line(line)
# multi-line statements
while line.endswith("\\"):
i += 1
line = lines[i]
line = line.strip('\n')
- features.extend(get_features_in_line(line))
- for feature in set(features):
- if REGEX_NUMERIC.match(feature):
+ symbols.extend(get_symbols_in_line(line))
+ for symbol in set(symbols):
+ if REGEX_NUMERIC.match(symbol):
# ignore numeric values
continue
- references.append(feature)
+ references.append(symbol)
return defined, references
-#!/bin/sh
+#!/bin/awk -f
# Before running this script please ensure that your PATH is
# typical as you use for compilation/installation. I use
# /bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may
# differ on your system.
-#
-echo 'If some fields are empty or look unusual you may have an old version.'
-echo 'Compare to the current minimal requirements in Documentation/Changes.'
-echo ' '
-uname -a
-echo ' '
-
-gcc -dumpversion 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("GNU C\t\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-make --version 2>&1 |
-awk '/GNU Make/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("GNU Make\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-ld -v 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Binutils\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-mount --version 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- $0 = substr($0,RSTART,RLENGTH)
- printf("Util-linux\t\t%s\nMount\t\t\t%s\n",$0,$0)
-}'
-
-depmod -V 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Module-init-tools\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-tune2fs 2>&1 |
-awk '/^tune2fs/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("E2fsprogs\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-fsck.jfs -V 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Jfsutils\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-reiserfsck -V 2>&1 |
-awk '/^reiserfsck/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Reiserfsprogs\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-fsck.reiser4 -V 2>&1 | grep ^fsck.reiser4 | awk \
-'NR==1{print "reiser4progs ", $2}'
-
-xfs_db -V 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Xfsprogs\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-pccardctl -V 2>&1 |
-awk '/pcmciautils/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Pcmciautils\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-cardmgr -V 2>&1| grep version | awk \
-'NR==1{print "pcmcia-cs ", $3}'
-
-quota -V 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Quota-tools\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-pppd --version 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("PPP\t\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-isdnctrl 2>&1 | grep version | awk \
-'NR==1{print "isdn4k-utils ", $NF}'
-
-showmount --version 2>&1 | grep nfs-utils | awk \
-'NR==1{print "nfs-utils ", $NF}'
-
-test -r /proc/self/maps &&
-sed '
- /.*libc-\(.*\)\.so$/!d
- s//Linux C Library\t\t\1/
- q
-' /proc/self/maps
-
-ldd --version 2>&1 |
-awk '/^ldd/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Dynamic linker (ldd)\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-libcpp=`ldconfig -p 2>/dev/null |
- awk '/(libg|stdc)[+]+\.so/ {
- print $NF
- exit
+BEGIN {
+ usage = "If some fields are empty or look unusual you may have an old version.\n"
+ usage = usage "Compare to the current minimal requirements in Documentation/Changes.\n"
+ print usage
+
+ system("uname -a")
+ printf("\n")
+
+ printversion("GNU C", version("gcc -dumpversion 2>&1"))
+ printversion("GNU Make", version("make --version 2>&1"))
+ printversion("Binutils", version("ld -v 2>&1"))
+ printversion("Util-linux", version("mount --version 2>&1"))
+ printversion("Mount", version("mount --version 2>&1"))
+ printversion("Module-init-tools", version("depmod -V 2>&1"))
+ printversion("E2fsprogs", version("tune2fs 2>&1"))
+ printversion("Jfsutils", version("fsck.jfs -V 2>&1"))
+ printversion("Reiserfsprogs", version("reiserfsck -V 2>&1"))
+ printversion("Reiser4fsprogs", version("fsck.reiser4 -V 2>&1"))
+ printversion("Xfsprogs", version("xfs_db -V 2>&1"))
+ printversion("Pcmciautils", version("pccardctl -V 2>&1"))
+ printversion("Pcmcia-cs", version("cardmgr -V 2>&1"))
+ printversion("Quota-tools", version("quota -V 2>&1"))
+ printversion("PPP", version("pppd --version 2>&1"))
+ printversion("Isdn4k-utils", version("isdnctrl 2>&1"))
+ printversion("Nfs-utils", version("showmount --version 2>&1"))
+
+ if (system("test -r /proc/self/maps") == 0) {
+ while (getline <"/proc/self/maps" > 0) {
+ n = split($0, procmaps, "/")
+ if (/libc.*so$/ && match(procmaps[n], /[0-9]+([.]?[0-9]+)+/)) {
+ ver = substr(procmaps[n], RSTART, RLENGTH)
+ printversion("Linux C Library", ver)
+ break
+ }
+ }
}
-'`
-test -r "$libcpp" &&
-ls -l $libcpp |
-sed '
- s!.*so\.!!
- s!^!Linux C++ Library\t!
-'
-ps --version 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Procps\t\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-ifconfig --version 2>&1 |
-awk '/tools/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Net-tools\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-loadkeys -V 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- $0 = substr($0,RSTART,RLENGTH)
- printf("Kbd\t\t\t%s\nConsole-tools\t\t%s\n",$0,$0)
-}'
-oprofiled --version 2>&1 | awk \
-'(NR==1 && ($2 == "oprofile")) {print "oprofile ", $3}'
+ printversion("Dynamic linker (ldd)", version("ldd --version 2>&1"))
-expr --v 2>&1 |
-awk '/^expr/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Sh-utils\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
-
-udevadm --version 2>&1 |
-awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Udev\t\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
+ while ("ldconfig -p 2>/dev/null" | getline > 0) {
+ if (/(libg|stdc)[+]+\.so/) {
+ libcpp = $NF
+ break
+ }
+ }
+ if (system("test -r " libcpp) == 0)
+ printversion("Linux C++ Library", version("readlink " libcpp))
+
+ printversion("Procps", version("ps --version 2>&1"))
+ printversion("Net-tools", version("ifconfig --version 2>&1"))
+ printversion("Kbd", version("loadkeys -V 2>&1"))
+ printversion("Console-tools", version("loadkeys -V 2>&1"))
+ printversion("Oprofile", version("oprofiled --version 2>&1"))
+ printversion("Sh-utils", version("expr --v 2>&1"))
+ printversion("Udev", version("udevadm --version 2>&1"))
+ printversion("Wireless-tools", version("iwconfig --version 2>&1"))
+
+ if (system("test -r /proc/modules") == 0) {
+ while ("sort /proc/modules" | getline > 0) {
+ mods = mods sep $1
+ sep = " "
+ }
+ printversion("Modules Loaded", mods)
+ }
+}
-iwconfig --version 2>&1 |
-awk '/version/{
- match($0, /[0-9]+([.]?[0-9]+)+/)
- printf("Wireless-tools\t\t%s\n",
- substr($0,RSTART,RLENGTH))
-}'
+function version(cmd, ver) {
+ while (cmd | getline > 0) {
+ if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) {
+ ver = substr($0, RSTART, RLENGTH)
+ break
+ }
+ }
+ close(cmd)
+ return ver
+}
-test -e /proc/modules &&
-sort /proc/modules |
-sed '
- s/ .*//
- H
-${
- g
- s/^\n/Modules Loaded\t\t/
- y/\n/ /
- q
+function printversion(name, value, ofmt) {
+ if (value != "") {
+ ofmt = "%-20s\t%s\n"
+ printf(ofmt, name, value)
+ }
}
- d
-'
openlog("KVP", 0, LOG_USER);
syslog(LOG_INFO, "KVP starting; pid is:%d", getpid());
- kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR);
+ kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC);
if (kvp_fd < 0) {
syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s",
syslog(LOG_ERR, "/etc/fstab and /proc/mounts");
}
break;
+ case VSS_OP_HOT_BACKUP:
+ syslog(LOG_INFO, "VSS: op=CHECK HOT BACKUP\n");
+ break;
default:
syslog(LOG_ERR, "Illegal op:%d\n", op);
}
projects / deliverable / linux.git / commitdiff
