[deliverable/linux.git] / drivers / parisc / superio.c

/*      National Semiconductor NS87560UBD Super I/O controller used in
 *      HP [BCJ]x000 workstations.
 *
 *      This chip is a horrid piece of engineering, and National
 *      denies any knowledge of its existence. Thus no datasheet is
 *      available off www.national.com. 
 *
 *	(C) Copyright 2000 Linuxcare, Inc.
 * 	(C) Copyright 2000 Linuxcare Canada, Inc.
 *	(C) Copyright 2000 Martin K. Petersen <mkp@linuxcare.com>
 * 	(C) Copyright 2000 Alex deVries <alex@onefishtwo.ca>
 *      (C) Copyright 2001 John Marvin <jsm fc hp com>
 *      (C) Copyright 2003 Grant Grundler <grundler parisc-linux org>
 *	(C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org>
 *
 *	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.  
 *
 *	The initial version of this is by Martin Peterson.  Alex deVries
 *	has spent a bit of time trying to coax it into working.
 *
 *      Major changes to get basic interrupt infrastructure working to
 *      hopefully be able to support all SuperIO devices. Currently
 *      works with serial. -- John Marvin <jsm@fc.hp.com>
 *
 *	Converted superio_init() to be a PCI_FIXUP_FINAL callee.
 *         -- Kyle McMartin <kyle@parisc-linux.org>
 */


/* NOTES:
 * 
 * Function 0 is an IDE controller. It is identical to a PC87415 IDE
 * controller (and identifies itself as such).
 *
 * Function 1 is a "Legacy I/O" controller. Under this function is a
 * whole mess of legacy I/O peripherals. Of course, HP hasn't enabled
 * all the functionality in hardware, but the following is available:
 *
 *      Two 16550A compatible serial controllers
 *      An IEEE 1284 compatible parallel port
 *      A floppy disk controller
 *
 * Function 2 is a USB controller.
 *
 * We must be incredibly careful during initialization.  Since all
 * interrupts are routed through function 1 (which is not allowed by
 * the PCI spec), we need to program the PICs on the legacy I/O port
 * *before* we attempt to set up IDE and USB.  @#$!&
 *
 * According to HP, devices are only enabled by firmware if they have
 * a physical device connected.
 *
 * Configuration register bits:
 *     0x5A: FDC, SP1, IDE1, SP2, IDE2, PAR, Reserved, P92
 *     0x5B: RTC, 8259, 8254, DMA1, DMA2, KBC, P61, APM
 *
 */

#include <linux/errno.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/serial.h>
#include <linux/pci.h>
#include <linux/parport.h>
#include <linux/parport_pc.h>
#include <linux/termios.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/delay.h>

#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/superio.h>

static struct superio_device sio_dev;


#undef DEBUG_SUPERIO_INIT

#ifdef DEBUG_SUPERIO_INIT
#define DBG_INIT(x...)  printk(x)
#else
#define DBG_INIT(x...)
#endif

#define SUPERIO	"SuperIO"
#define PFX	SUPERIO ": "

static irqreturn_t
superio_interrupt(int parent_irq, void *devp, struct pt_regs *regs)
{
	u8 results;
	u8 local_irq;

	/* Poll the 8259 to see if there's an interrupt. */
	outb (OCW3_POLL,IC_PIC1+0);

	results = inb(IC_PIC1+0);

	/*
	 * Bit    7:	1 = active Interrupt; 0 = no Interrupt pending
	 * Bits 6-3:	zero
	 * Bits 2-0:	highest priority, active requesting interrupt ID (0-7)
	 */
	if ((results & 0x80) == 0) {
		/* I suspect "spurious" interrupts are from unmasking an IRQ.
		 * We don't know if an interrupt was/is pending and thus
		 * just call the handler for that IRQ as if it were pending.
		 */
		return IRQ_NONE;
	}

	/* Check to see which device is interrupting */
	local_irq = results & 0x0f;

	if (local_irq == 2 || local_irq > 7) {
		printk(KERN_ERR PFX "slave interrupted!\n");
		return IRQ_HANDLED;
	}

	if (local_irq == 7) {

		/* Could be spurious. Check in service bits */

		outb(OCW3_ISR,IC_PIC1+0);
		results = inb(IC_PIC1+0);
		if ((results & 0x80) == 0) { /* if ISR7 not set: spurious */
			printk(KERN_WARNING PFX "spurious interrupt!\n");
			return IRQ_HANDLED;
		}
	}

	/* Call the appropriate device's interrupt */
	__do_IRQ(local_irq, regs);

	/* set EOI - forces a new interrupt if a lower priority device
	 * still needs service.
	 */
	outb((OCW2_SEOI|local_irq),IC_PIC1 + 0);
	return IRQ_HANDLED;
}

/* Initialize Super I/O device */
static void
superio_init(struct pci_dev *pcidev)
{
	struct superio_device *sio = &sio_dev;
	struct pci_dev *pdev = sio->lio_pdev;
	u16 word;

        if (sio->suckyio_irq_enabled)                                       
		return;

	if (!pdev) BUG();
	if (!sio->usb_pdev) BUG();

	/* use the IRQ iosapic found for USB INT D... */
	pdev->irq = sio->usb_pdev->irq;

	/* ...then properly fixup the USB to point at suckyio PIC */
	sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev);

	printk(KERN_INFO PFX "Found NS87560 Legacy I/O device at %s (IRQ %i) \n",
	       pci_name(pdev), pdev->irq);

	pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base);
	sio->sp1_base &= ~1;
	printk(KERN_INFO PFX "Serial port 1 at 0x%x\n", sio->sp1_base);

	pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base);
	sio->sp2_base &= ~1;
	printk(KERN_INFO PFX "Serial port 2 at 0x%x\n", sio->sp2_base);

	pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base);
	sio->pp_base &= ~1;
	printk(KERN_INFO PFX "Parallel port at 0x%x\n", sio->pp_base);

	pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base);
	sio->fdc_base &= ~1;
	printk(KERN_INFO PFX "Floppy controller at 0x%x\n", sio->fdc_base);
	pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base);
	sio->acpi_base &= ~1;
	printk(KERN_INFO PFX "ACPI at 0x%x\n", sio->acpi_base);

	request_region (IC_PIC1, 0x1f, "pic1");
	request_region (IC_PIC2, 0x1f, "pic2");
	request_region (sio->acpi_base, 0x1f, "acpi");

	/* Enable the legacy I/O function */
        pci_read_config_word (pdev, PCI_COMMAND, &word);
	word |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO;
	pci_write_config_word (pdev, PCI_COMMAND, word);

	pci_set_master (pdev);
	pci_enable_device(pdev);

	/*
	 * Next project is programming the onboard interrupt controllers.
	 * PDC hasn't done this for us, since it's using polled I/O.
	 *
	 * XXX Use dword writes to avoid bugs in Elroy or Suckyio Config
	 *     space access.  PCI is by nature a 32-bit bus and config
	 *     space can be sensitive to that.
	 */

	/* 0x64 - 0x67 :
		DMA Rtg 2
		DMA Rtg 3
		DMA Chan Ctl
		TRIGGER_1    == 0x82   USB & IDE level triggered, rest to edge
	*/
	pci_write_config_dword (pdev, 0x64,         0x82000000U);

	/* 0x68 - 0x6b :
		TRIGGER_2    == 0x00   all edge triggered (not used)
		CFG_IR_SER   == 0x43   SerPort1 = IRQ3, SerPort2 = IRQ4
		CFG_IR_PF    == 0x65   ParPort  = IRQ5, FloppyCtlr = IRQ6
		CFG_IR_IDE   == 0x07   IDE1 = IRQ7, reserved
	*/
	pci_write_config_dword (pdev, TRIGGER_2,    0x07654300U);

	/* 0x6c - 0x6f :
		CFG_IR_INTAB == 0x00
		CFG_IR_INTCD == 0x10   USB = IRQ1
		CFG_IR_PS2   == 0x00
		CFG_IR_FXBUS == 0x00
	*/
	pci_write_config_dword (pdev, CFG_IR_INTAB, 0x00001000U);

	/* 0x70 - 0x73 :
		CFG_IR_USB   == 0x00  not used. USB is connected to INTD.
		CFG_IR_ACPI  == 0x00  not used.
		DMA Priority == 0x4c88  Power on default value. NFC.
	*/
	pci_write_config_dword (pdev, CFG_IR_USB, 0x4c880000U);

	/* PIC1 Initialization Command Word register programming */
	outb (0x11,IC_PIC1+0);	/* ICW1: ICW4 write req | ICW1 */
	outb (0x00,IC_PIC1+1);	/* ICW2: interrupt vector table - not used */
	outb (0x04,IC_PIC1+1);	/* ICW3: Cascade */
	outb (0x01,IC_PIC1+1);	/* ICW4: x86 mode */

	/* PIC1 Program Operational Control Words */
	outb (0xff,IC_PIC1+1);	/* OCW1: Mask all interrupts */
	outb (0xc2,IC_PIC1+0);  /* OCW2: priority (3-7,0-2) */

	/* PIC2 Initialization Command Word register programming */
	outb (0x11,IC_PIC2+0);	/* ICW1: ICW4 write req | ICW1 */
	outb (0x00,IC_PIC2+1);	/* ICW2: N/A */
	outb (0x02,IC_PIC2+1);	/* ICW3: Slave ID code */
	outb (0x01,IC_PIC2+1);	/* ICW4: x86 mode */
		
	/* Program Operational Control Words */
	outb (0xff,IC_PIC1+1);	/* OCW1: Mask all interrupts */
	outb (0x68,IC_PIC1+0);	/* OCW3: OCW3 select | ESMM | SMM */

	/* Write master mask reg */
	outb (0xff,IC_PIC1+1);

	/* Setup USB power regulation */
	outb(1, sio->acpi_base + USB_REG_CR);
	if (inb(sio->acpi_base + USB_REG_CR) & 1)
		printk(KERN_INFO PFX "USB regulator enabled\n");
	else
		printk(KERN_ERR PFX "USB regulator not initialized!\n");

	if (request_irq(pdev->irq, superio_interrupt, SA_INTERRUPT,
			SUPERIO, (void *)sio)) {

		printk(KERN_ERR PFX "could not get irq\n");
		BUG();
		return;
	}

	sio->suckyio_irq_enabled = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO, superio_init);

static void superio_disable_irq(unsigned int irq)
{
	u8 r8;

	if ((irq < 1) || (irq == 2) || (irq > 7)) {
		printk(KERN_ERR PFX "Illegal irq number.\n");
		BUG();
		return;
	}

	/* Mask interrupt */

	r8 = inb(IC_PIC1+1);
	r8 |= (1 << irq);
	outb (r8,IC_PIC1+1);
}

static void superio_enable_irq(unsigned int irq)
{
	u8 r8;

	if ((irq < 1) || (irq == 2) || (irq > 7)) {
		printk(KERN_ERR PFX "Illegal irq number (%d).\n", irq);
		BUG();
		return;
	}

	/* Unmask interrupt */
	r8 = inb(IC_PIC1+1);
	r8 &= ~(1 << irq);
	outb (r8,IC_PIC1+1);
}

static unsigned int superio_startup_irq(unsigned int irq)
{
	superio_enable_irq(irq);
	return 0;
}

static struct hw_interrupt_type superio_interrupt_type = {
	.typename =	SUPERIO,
	.startup =	superio_startup_irq,
	.shutdown =	superio_disable_irq,
	.enable =	superio_enable_irq,
	.disable =	superio_disable_irq,
	.ack =		no_ack_irq,
	.end =		no_end_irq,
};

#ifdef DEBUG_SUPERIO_INIT
static unsigned short expected_device[3] = {
	PCI_DEVICE_ID_NS_87415,
	PCI_DEVICE_ID_NS_87560_LIO,
	PCI_DEVICE_ID_NS_87560_USB
};
#endif

int superio_fixup_irq(struct pci_dev *pcidev)
{
	int local_irq, i;

#ifdef DEBUG_SUPERIO_INIT
	int fn;
	fn = PCI_FUNC(pcidev->devfn);

	/* Verify the function number matches the expected device id. */
	if (expected_device[fn] != pcidev->device) {
		BUG();
		return -1;
	}
	printk("superio_fixup_irq(%s) ven 0x%x dev 0x%x from %p\n",
		pci_name(pcidev),
		pcidev->vendor, pcidev->device,
		__builtin_return_address(0));
#endif

	for (i = 0; i < 16; i++) {
		irq_desc[i].handler = &superio_interrupt_type;
	}

	/*
	 * We don't allocate a SuperIO irq for the legacy IO function,
	 * since it is a "bridge". Instead, we will allocate irq's for
	 * each legacy device as they are initialized.
	 */

	switch(pcidev->device) {
	case PCI_DEVICE_ID_NS_87415:		/* Function 0 */
		local_irq = IDE_IRQ;
		break;
	case PCI_DEVICE_ID_NS_87560_LIO:	/* Function 1 */
		sio_dev.lio_pdev = pcidev;	/* save for superio_init() */
		return -1;
	case PCI_DEVICE_ID_NS_87560_USB:	/* Function 2 */
		sio_dev.usb_pdev = pcidev;	/* save for superio_init() */
		local_irq = USB_IRQ;
		break;
	default:
		local_irq = -1;
		BUG();
		break;
	}

	return local_irq;
}

static struct uart_port serial[] = {
	{
		.iotype		= UPIO_PORT,
		.line		= 0,
		.type		= PORT_16550A,
		.uartclk	= 115200*16,
		.fifosize	= 16,
	},
	{
		.iotype		= UPIO_PORT,
		.line		= 1,
		.type		= PORT_16550A,
		.uartclk	= 115200*16,
		.fifosize	= 16,
	}
};

static void __devinit superio_serial_init(void)
{
#ifdef CONFIG_SERIAL_8250
	int retval;
        
	serial[0].iobase = sio_dev.sp1_base;
	serial[0].irq = SP1_IRQ;
	spin_lock_init(&serial[0].lock);

	retval = early_serial_setup(&serial[0]);
	if (retval < 0) {
		printk(KERN_WARNING PFX "Register Serial #0 failed.\n");
		return;
	}

	serial[1].iobase = sio_dev.sp2_base;
	serial[1].irq = SP2_IRQ;
	spin_lock_init(&serial[1].lock);
	retval = early_serial_setup(&serial[1]);

	if (retval < 0)
		printk(KERN_WARNING PFX "Register Serial #1 failed.\n");
#endif /* CONFIG_SERIAL_8250 */
}


static void __devinit superio_parport_init(void)
{
#ifdef CONFIG_PARPORT_PC
	if (!parport_pc_probe_port(sio_dev.pp_base,
			0 /*base_hi*/,
			PAR_IRQ, 
			PARPORT_DMA_NONE /* dma */,
			NULL /*struct pci_dev* */) )

		printk(KERN_WARNING PFX "Probing parallel port failed.\n");
#endif	/* CONFIG_PARPORT_PC */
}


static void superio_fixup_pci(struct pci_dev *pdev)
{
	u8 prog;

	pdev->class |= 0x5;
	pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class);

	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
	printk("PCI: Enabled native mode for NS87415 (pif=0x%x)\n", prog);
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415, superio_fixup_pci);


static int __devinit
superio_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
	struct superio_device *sio = &sio_dev;

	/*
	** superio_probe(00:0e.0) ven 0x100b dev 0x2 sv 0x0 sd 0x0 class 0x1018a
	** superio_probe(00:0e.1) ven 0x100b dev 0xe sv 0x0 sd 0x0 class 0x68000
	** superio_probe(00:0e.2) ven 0x100b dev 0x12 sv 0x0 sd 0x0 class 0xc0310
	*/
	DBG_INIT("superio_probe(%s) ven 0x%x dev 0x%x sv 0x%x sd 0x%x class 0x%x\n",
		pci_name(dev),
		dev->vendor, dev->device,
		dev->subsystem_vendor, dev->subsystem_device,
		dev->class);

	if (!sio->suckyio_irq_enabled)
		BUG(); /* Enabled by PCI_FIXUP_FINAL */

	if (dev->device == PCI_DEVICE_ID_NS_87560_LIO) {	/* Function 1 */
		superio_parport_init();
		superio_serial_init();
		/* REVISIT XXX : superio_fdc_init() ? */
		return 0;
	} else if (dev->device == PCI_DEVICE_ID_NS_87415) {	/* Function 0 */
		DBG_INIT("superio_probe: ignoring IDE 87415\n");
	} else if (dev->device == PCI_DEVICE_ID_NS_87560_USB) {	/* Function 2 */
		DBG_INIT("superio_probe: ignoring USB OHCI controller\n");
	} else {
		DBG_INIT("superio_probe: WTF? Fire Extinguisher?\n");
	}

	/* Let appropriate other driver claim this device. */
	return -ENODEV;
}

static struct pci_device_id superio_tbl[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO) },
	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_USB) },
	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415) },
	{ 0, }
};

static struct pci_driver superio_driver = {
	.name =         SUPERIO,
	.id_table =     superio_tbl,
	.probe =        superio_probe,
};

static int __init superio_modinit(void)
{
	return pci_register_driver(&superio_driver);
}

static void __exit superio_exit(void)
{
	pci_unregister_driver(&superio_driver);
}

module_init(superio_modinit);
module_exit(superio_exit);
Commit	Line	Data
1da177e4 LT	1	/* National Semiconductor NS87560UBD Super I/O controller used in
	2	* HP [BCJ]x000 workstations.
	3	*
	4	* This chip is a horrid piece of engineering, and National
	5	* denies any knowledge of its existence. Thus no datasheet is
	6	* available off www.national.com.
	7	*
	8	* (C) Copyright 2000 Linuxcare, Inc.
	9	* (C) Copyright 2000 Linuxcare Canada, Inc.
	10	* (C) Copyright 2000 Martin K. Petersen <mkp@linuxcare.com>
	11	* (C) Copyright 2000 Alex deVries <alex@onefishtwo.ca>
	12	* (C) Copyright 2001 John Marvin <jsm fc hp com>
	13	* (C) Copyright 2003 Grant Grundler <grundler parisc-linux org>
7efe1611	14	* (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org>
1da177e4 LT	15	*
	16	* This program is free software; you can redistribute it and/or
	17	* modify it under the terms of the GNU General Public License as
	18	* published by the Free Software Foundation; either version 2 of
	19	* the License, or (at your option) any later version.
	20	*
	21	* The initial version of this is by Martin Peterson. Alex deVries
	22	* has spent a bit of time trying to coax it into working.
	23	*
	24	* Major changes to get basic interrupt infrastructure working to
	25	* hopefully be able to support all SuperIO devices. Currently
	26	* works with serial. -- John Marvin <jsm@fc.hp.com>
a39cf72c KM	27	*
	28	* Converted superio_init() to be a PCI_FIXUP_FINAL callee.
	29	* -- Kyle McMartin <kyle@parisc-linux.org>
1da177e4 LT	30	*/
	31
	32
	33	/* NOTES:
	34	*
	35	* Function 0 is an IDE controller. It is identical to a PC87415 IDE
	36	* controller (and identifies itself as such).
	37	*
	38	* Function 1 is a "Legacy I/O" controller. Under this function is a
	39	* whole mess of legacy I/O peripherals. Of course, HP hasn't enabled
	40	* all the functionality in hardware, but the following is available:
	41	*
	42	* Two 16550A compatible serial controllers
	43	* An IEEE 1284 compatible parallel port
	44	* A floppy disk controller
	45	*
	46	* Function 2 is a USB controller.
	47	*
	48	* We must be incredibly careful during initialization. Since all
	49	* interrupts are routed through function 1 (which is not allowed by
	50	* the PCI spec), we need to program the PICs on the legacy I/O port
	51	* before we attempt to set up IDE and USB. @#$!&
	52	*
	53	* According to HP, devices are only enabled by firmware if they have
	54	* a physical device connected.
	55	*
	56	* Configuration register bits:
	57	* 0x5A: FDC, SP1, IDE1, SP2, IDE2, PAR, Reserved, P92
	58	* 0x5B: RTC, 8259, 8254, DMA1, DMA2, KBC, P61, APM
	59	*
	60	*/
	61
	62	#include <linux/errno.h>
	63	#include <linux/init.h>
	64	#include <linux/module.h>
	65	#include <linux/types.h>
	66	#include <linux/interrupt.h>
	67	#include <linux/ioport.h>
	68	#include <linux/serial.h>
	69	#include <linux/pci.h>
	70	#include <linux/parport.h>
	71	#include <linux/parport_pc.h>
	72	#include <linux/termios.h>
	73	#include <linux/tty.h>
	74	#include <linux/serial_core.h>
	75	#include <linux/delay.h>
	76
	77	#include <asm/io.h>
	78	#include <asm/hardware.h>
	79	#include <asm/superio.h>
	80
	81	static struct superio_device sio_dev;
	82
	83
	84	#undef DEBUG_SUPERIO_INIT
	85
	86	#ifdef DEBUG_SUPERIO_INIT
	87	#define DBG_INIT(x...) printk(x)
	88	#else
	89	#define DBG_INIT(x...)
	90	#endif
	91
16541c87 KM	92	#define SUPERIO "SuperIO"
	93	#define PFX SUPERIO ": "
	94
1da177e4 LT	95	static irqreturn_t
	96	superio_interrupt(int parent_irq, void devp, struct pt_regs regs)
	97	{
	98	u8 results;
	99	u8 local_irq;
	100
	101	/* Poll the 8259 to see if there's an interrupt. */
	102	outb (OCW3_POLL,IC_PIC1+0);
	103
	104	results = inb(IC_PIC1+0);
	105
	106	/*
	107	* Bit 7: 1 = active Interrupt; 0 = no Interrupt pending
	108	* Bits 6-3: zero
	109	* Bits 2-0: highest priority, active requesting interrupt ID (0-7)
	110	*/
	111	if ((results & 0x80) == 0) {
	112	/* I suspect "spurious" interrupts are from unmasking an IRQ.
	113	* We don't know if an interrupt was/is pending and thus
	114	* just call the handler for that IRQ as if it were pending.
	115	*/
	116	return IRQ_NONE;
	117	}
	118
	119	/* Check to see which device is interrupting */
	120	local_irq = results & 0x0f;
	121
	122	if (local_irq == 2 \|\| local_irq > 7) {
16541c87	123	printk(KERN_ERR PFX "slave interrupted!\n");
1da177e4 LT	124	return IRQ_HANDLED;
	125	}
	126
	127	if (local_irq == 7) {
	128
	129	/* Could be spurious. Check in service bits */
	130
	131	outb(OCW3_ISR,IC_PIC1+0);
	132	results = inb(IC_PIC1+0);
	133	if ((results & 0x80) == 0) { /* if ISR7 not set: spurious */
16541c87	134	printk(KERN_WARNING PFX "spurious interrupt!\n");
1da177e4 LT	135	return IRQ_HANDLED;
	136	}
	137	}
	138
	139	/* Call the appropriate device's interrupt */
	140	__do_IRQ(local_irq, regs);
	141
	142	/* set EOI - forces a new interrupt if a lower priority device
	143	* still needs service.
	144	*/
	145	outb((OCW2_SEOI\|local_irq),IC_PIC1 + 0);
	146	return IRQ_HANDLED;
	147	}
	148
	149	/* Initialize Super I/O device */
a39cf72c KM	150	static void
a39cf72c KM	151	superio_init(struct pci_dev *pcidev)
1da177e4	152	{
a39cf72c	153	struct superio_device *sio = &sio_dev;
1da177e4 LT	154	struct pci_dev *pdev = sio->lio_pdev;
	155	u16 word;
	156
	157	if (sio->suckyio_irq_enabled)
	158	return;
	159
	160	if (!pdev) BUG();
	161	if (!sio->usb_pdev) BUG();
	162
	163	/* use the IRQ iosapic found for USB INT D... */
	164	pdev->irq = sio->usb_pdev->irq;
	165
	166	/* ...then properly fixup the USB to point at suckyio PIC */
	167	sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev);
	168
16541c87	169	printk(KERN_INFO PFX "Found NS87560 Legacy I/O device at %s (IRQ %i) \n",
a39cf72c	170	pci_name(pdev), pdev->irq);
1da177e4 LT	171
	172	pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base);
	173	sio->sp1_base &= ~1;
16541c87	174	printk(KERN_INFO PFX "Serial port 1 at 0x%x\n", sio->sp1_base);
1da177e4 LT	175
	176	pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base);
	177	sio->sp2_base &= ~1;
16541c87	178	printk(KERN_INFO PFX "Serial port 2 at 0x%x\n", sio->sp2_base);
1da177e4 LT	179
	180	pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base);
	181	sio->pp_base &= ~1;
16541c87	182	printk(KERN_INFO PFX "Parallel port at 0x%x\n", sio->pp_base);
1da177e4 LT	183
	184	pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base);
	185	sio->fdc_base &= ~1;
16541c87	186	printk(KERN_INFO PFX "Floppy controller at 0x%x\n", sio->fdc_base);
1da177e4 LT	187	pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base);
1da177e4 LT	188	sio->acpi_base &= ~1;
16541c87	189	printk(KERN_INFO PFX "ACPI at 0x%x\n", sio->acpi_base);
1da177e4 LT	190
	191	request_region (IC_PIC1, 0x1f, "pic1");
	192	request_region (IC_PIC2, 0x1f, "pic2");
	193	request_region (sio->acpi_base, 0x1f, "acpi");
	194
	195	/* Enable the legacy I/O function */
	196	pci_read_config_word (pdev, PCI_COMMAND, &word);
	197	word \|= PCI_COMMAND_SERR \| PCI_COMMAND_PARITY \| PCI_COMMAND_IO;
	198	pci_write_config_word (pdev, PCI_COMMAND, word);
	199
	200	pci_set_master (pdev);
	201	pci_enable_device(pdev);
	202
	203	/*
	204	* Next project is programming the onboard interrupt controllers.
	205	* PDC hasn't done this for us, since it's using polled I/O.
	206	*
	207	* XXX Use dword writes to avoid bugs in Elroy or Suckyio Config
	208	* space access. PCI is by nature a 32-bit bus and config
	209	* space can be sensitive to that.
	210	*/
	211
	212	/* 0x64 - 0x67 :
	213	DMA Rtg 2
	214	DMA Rtg 3
	215	DMA Chan Ctl
	216	TRIGGER_1 == 0x82 USB & IDE level triggered, rest to edge
	217	*/
	218	pci_write_config_dword (pdev, 0x64, 0x82000000U);
	219
	220	/* 0x68 - 0x6b :
	221	TRIGGER_2 == 0x00 all edge triggered (not used)
	222	CFG_IR_SER == 0x43 SerPort1 = IRQ3, SerPort2 = IRQ4
	223	CFG_IR_PF == 0x65 ParPort = IRQ5, FloppyCtlr = IRQ6
	224	CFG_IR_IDE == 0x07 IDE1 = IRQ7, reserved
	225	*/
	226	pci_write_config_dword (pdev, TRIGGER_2, 0x07654300U);
	227
	228	/* 0x6c - 0x6f :
	229	CFG_IR_INTAB == 0x00
	230	CFG_IR_INTCD == 0x10 USB = IRQ1
	231	CFG_IR_PS2 == 0x00
	232	CFG_IR_FXBUS == 0x00
	233	*/
	234	pci_write_config_dword (pdev, CFG_IR_INTAB, 0x00001000U);
	235
	236	/* 0x70 - 0x73 :
	237	CFG_IR_USB == 0x00 not used. USB is connected to INTD.
	238	CFG_IR_ACPI == 0x00 not used.
	239	DMA Priority == 0x4c88 Power on default value. NFC.
	240	*/
	241	pci_write_config_dword (pdev, CFG_IR_USB, 0x4c880000U);
	242
	243	/* PIC1 Initialization Command Word register programming */
	244	outb (0x11,IC_PIC1+0); /* ICW1: ICW4 write req \| ICW1 */
	245	outb (0x00,IC_PIC1+1); /* ICW2: interrupt vector table - not used */
	246	outb (0x04,IC_PIC1+1); /* ICW3: Cascade */
	247	outb (0x01,IC_PIC1+1); /* ICW4: x86 mode */
	248
	249	/* PIC1 Program Operational Control Words */
	250	outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */
	251	outb (0xc2,IC_PIC1+0); /* OCW2: priority (3-7,0-2) */
	252
	253	/* PIC2 Initialization Command Word register programming */
254	outb (0x11,IC_PIC2+0); /* ICW1: ICW4 write req \| ICW1 */
255	outb (0x00,IC_PIC2+1); /* ICW2: N/A */
256	outb (0x02,IC_PIC2+1); /* ICW3: Slave ID code */
257	outb (0x01,IC_PIC2+1); /* ICW4: x86 mode */
258
259	/* Program Operational Control Words */
260	outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */
261	outb (0x68,IC_PIC1+0); /* OCW3: OCW3 select \| ESMM \| SMM */
262
263	/* Write master mask reg */
264	outb (0xff,IC_PIC1+1);
265
266	/* Setup USB power regulation */
267	outb(1, sio->acpi_base + USB_REG_CR);
268	if (inb(sio->acpi_base + USB_REG_CR) & 1)
16541c87	269	printk(KERN_INFO PFX "USB regulator enabled\n");
1da177e4	270	else
16541c87	271	printk(KERN_ERR PFX "USB regulator not initialized!\n");
1da177e4 LT	272
1da177e4 LT	273	if (request_irq(pdev->irq, superio_interrupt, SA_INTERRUPT,
16541c87	274	SUPERIO, (void *)sio)) {
1da177e4	275
16541c87	276	printk(KERN_ERR PFX "could not get irq\n");
1da177e4 LT	277	BUG();
	278	return;
	279	}
	280
	281	sio->suckyio_irq_enabled = 1;
	282	}
a39cf72c	283	DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO, superio_init);
1da177e4 LT	284
	285	static void superio_disable_irq(unsigned int irq)
	286	{
	287	u8 r8;
	288
	289	if ((irq < 1) \|\| (irq == 2) \|\| (irq > 7)) {
16541c87	290	printk(KERN_ERR PFX "Illegal irq number.\n");
1da177e4 LT	291	BUG();
	292	return;
	293	}
	294
	295	/* Mask interrupt */
	296
	297	r8 = inb(IC_PIC1+1);
	298	r8 \|= (1 << irq);
	299	outb (r8,IC_PIC1+1);
	300	}
	301
	302	static void superio_enable_irq(unsigned int irq)
	303	{
	304	u8 r8;
	305
	306	if ((irq < 1) \|\| (irq == 2) \|\| (irq > 7)) {
16541c87	307	printk(KERN_ERR PFX "Illegal irq number (%d).\n", irq);
1da177e4 LT	308	BUG();
	309	return;
	310	}
	311
	312	/* Unmask interrupt */
	313	r8 = inb(IC_PIC1+1);
	314	r8 &= ~(1 << irq);
	315	outb (r8,IC_PIC1+1);
	316	}
	317
	318	static unsigned int superio_startup_irq(unsigned int irq)
	319	{
	320	superio_enable_irq(irq);
	321	return 0;
	322	}
	323
	324	static struct hw_interrupt_type superio_interrupt_type = {
16541c87	325	.typename = SUPERIO,
1da177e4 LT	326	.startup = superio_startup_irq,
	327	.shutdown = superio_disable_irq,
	328	.enable = superio_enable_irq,
	329	.disable = superio_disable_irq,
	330	.ack = no_ack_irq,
	331	.end = no_end_irq,
	332	};
	333
	334	#ifdef DEBUG_SUPERIO_INIT
	335	static unsigned short expected_device[3] = {
	336	PCI_DEVICE_ID_NS_87415,
	337	PCI_DEVICE_ID_NS_87560_LIO,
	338	PCI_DEVICE_ID_NS_87560_USB
	339	};
	340	#endif
	341
	342	int superio_fixup_irq(struct pci_dev *pcidev)
	343	{
	344	int local_irq, i;
	345
	346	#ifdef DEBUG_SUPERIO_INIT
	347	int fn;
	348	fn = PCI_FUNC(pcidev->devfn);
	349
	350	/* Verify the function number matches the expected device id. */
	351	if (expected_device[fn] != pcidev->device) {
	352	BUG();
	353	return -1;
	354	}
	355	printk("superio_fixup_irq(%s) ven 0x%x dev 0x%x from %p\n",
	356	pci_name(pcidev),
	357	pcidev->vendor, pcidev->device,
	358	__builtin_return_address(0));
	359	#endif
	360
	361	for (i = 0; i < 16; i++) {
	362	irq_desc[i].handler = &superio_interrupt_type;
	363	}
	364
	365	/*
	366	* We don't allocate a SuperIO irq for the legacy IO function,
	367	* since it is a "bridge". Instead, we will allocate irq's for
	368	* each legacy device as they are initialized.
	369	*/
	370
	371	switch(pcidev->device) {
	372	case PCI_DEVICE_ID_NS_87415: /* Function 0 */
	373	local_irq = IDE_IRQ;
	374	break;
	375	case PCI_DEVICE_ID_NS_87560_LIO: /* Function 1 */
	376	sio_dev.lio_pdev = pcidev; /* save for superio_init() */
	377	return -1;
	378	case PCI_DEVICE_ID_NS_87560_USB: /* Function 2 */
	379	sio_dev.usb_pdev = pcidev; /* save for superio_init() */
	380	local_irq = USB_IRQ;
	381	break;
	382	default:
	383	local_irq = -1;
	384	BUG();
	385	break;
	386	}
	387
	388	return local_irq;
	389	}
390
391	static struct uart_port serial[] = {
392	{
393	.iotype = UPIO_PORT,
394	.line = 0,
395	.type = PORT_16550A,
396	.uartclk = 115200*16,
397	.fifosize = 16,
398	},
399	{
400	.iotype = UPIO_PORT,
401	.line = 1,
402	.type = PORT_16550A,
403	.uartclk = 115200*16,
404	.fifosize = 16,
405	}
406	};
407
408	static void __devinit superio_serial_init(void)
409	{
410	#ifdef CONFIG_SERIAL_8250
411	int retval;
412
413	serial[0].iobase = sio_dev.sp1_base;
414	serial[0].irq = SP1_IRQ;
7efe1611	415	spin_lock_init(&serial[0].lock);
1da177e4 LT	416
	417	retval = early_serial_setup(&serial[0]);
	418	if (retval < 0) {
16541c87	419	printk(KERN_WARNING PFX "Register Serial #0 failed.\n");
1da177e4 LT	420	return;
	421	}
	422
	423	serial[1].iobase = sio_dev.sp2_base;
	424	serial[1].irq = SP2_IRQ;
7efe1611	425	spin_lock_init(&serial[1].lock);
1da177e4 LT	426	retval = early_serial_setup(&serial[1]);
	427
	428	if (retval < 0)
16541c87	429	printk(KERN_WARNING PFX "Register Serial #1 failed.\n");
1da177e4 LT	430	#endif /* CONFIG_SERIAL_8250 */
	431	}
	432
	433
	434	static void __devinit superio_parport_init(void)
	435	{
	436	#ifdef CONFIG_PARPORT_PC
	437	if (!parport_pc_probe_port(sio_dev.pp_base,
	438	0 /base_hi/,
	439	PAR_IRQ,
	440	PARPORT_DMA_NONE /* dma */,
	441	NULL /struct pci_dev */) )
	442
16541c87	443	printk(KERN_WARNING PFX "Probing parallel port failed.\n");
1da177e4 LT	444	#endif /* CONFIG_PARPORT_PC */
	445	}
	446
	447
	448	static void superio_fixup_pci(struct pci_dev *pdev)
	449	{
	450	u8 prog;
	451
	452	pdev->class \|= 0x5;
	453	pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class);
	454
	455	pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
	456	printk("PCI: Enabled native mode for NS87415 (pif=0x%x)\n", prog);
	457	}
	458	DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415, superio_fixup_pci);
	459
	460
a39cf72c KM	461	static int __devinit
a39cf72c KM	462	superio_probe(struct pci_dev dev, const struct pci_device_id id)
1da177e4	463	{
a39cf72c	464	struct superio_device *sio = &sio_dev;
1da177e4 LT	465
	466	/*
	467	** superio_probe(00:0e.0) ven 0x100b dev 0x2 sv 0x0 sd 0x0 class 0x1018a
	468	** superio_probe(00:0e.1) ven 0x100b dev 0xe sv 0x0 sd 0x0 class 0x68000
	469	** superio_probe(00:0e.2) ven 0x100b dev 0x12 sv 0x0 sd 0x0 class 0xc0310
	470	*/
	471	DBG_INIT("superio_probe(%s) ven 0x%x dev 0x%x sv 0x%x sd 0x%x class 0x%x\n",
	472	pci_name(dev),
	473	dev->vendor, dev->device,
	474	dev->subsystem_vendor, dev->subsystem_device,
	475	dev->class);
	476
a39cf72c KM	477	if (!sio->suckyio_irq_enabled)
a39cf72c KM	478	BUG(); /* Enabled by PCI_FIXUP_FINAL */
1da177e4 LT	479
	480	if (dev->device == PCI_DEVICE_ID_NS_87560_LIO) { /* Function 1 */
	481	superio_parport_init();
	482	superio_serial_init();
	483	/* REVISIT XXX : superio_fdc_init() ? */
	484	return 0;
	485	} else if (dev->device == PCI_DEVICE_ID_NS_87415) { /* Function 0 */
	486	DBG_INIT("superio_probe: ignoring IDE 87415\n");
	487	} else if (dev->device == PCI_DEVICE_ID_NS_87560_USB) { /* Function 2 */
	488	DBG_INIT("superio_probe: ignoring USB OHCI controller\n");
	489	} else {
	490	DBG_INIT("superio_probe: WTF? Fire Extinguisher?\n");
	491	}
	492
a39cf72c	493	/* Let appropriate other driver claim this device. */
1da177e4 LT	494	return -ENODEV;
	495	}
	496
	497	static struct pci_device_id superio_tbl[] = {
a39cf72c KM	498	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO) },
	499	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_USB) },
	500	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415) },
1da177e4 LT	501	{ 0, }
	502	};
	503
	504	static struct pci_driver superio_driver = {
16541c87	505	.name = SUPERIO,
a39cf72c KM	506	.id_table = superio_tbl,
a39cf72c KM	507	.probe = superio_probe,
1da177e4 LT	508	};
	509
	510	static int __init superio_modinit(void)
	511	{
	512	return pci_register_driver(&superio_driver);
	513	}
	514
	515	static void __exit superio_exit(void)
	516	{
	517	pci_unregister_driver(&superio_driver);
	518	}
	519
1da177e4 LT	520	module_init(superio_modinit);
1da177e4 LT	521	module_exit(superio_exit);