2 * Driver for Intel I82092AA PCI-PCMCIA bridge.
4 * (C) 2001 Red Hat, Inc.
6 * Author: Arjan Van De Ven <arjanv@redhat.com>
7 * Loosly based on i82365.c from the pcmcia-cs package
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/init.h>
14 #include <linux/workqueue.h>
15 #include <linux/interrupt.h>
16 #include <linux/device.h>
18 #include <pcmcia/ss.h>
25 MODULE_LICENSE("GPL");
27 /* PCI core routines */
28 static struct pci_device_id i82092aa_pci_ids
[] = {
30 .vendor
= PCI_VENDOR_ID_INTEL
,
31 .device
= PCI_DEVICE_ID_INTEL_82092AA_0
,
32 .subvendor
= PCI_ANY_ID
,
33 .subdevice
= PCI_ANY_ID
,
37 MODULE_DEVICE_TABLE(pci
, i82092aa_pci_ids
);
39 static struct pci_driver i82092aa_pci_driver
= {
41 .id_table
= i82092aa_pci_ids
,
42 .probe
= i82092aa_pci_probe
,
43 .remove
= __devexit_p(i82092aa_pci_remove
),
47 /* the pccard structure and its functions */
48 static struct pccard_operations i82092aa_operations
= {
49 .init
= i82092aa_init
,
50 .get_status
= i82092aa_get_status
,
51 .set_socket
= i82092aa_set_socket
,
52 .set_io_map
= i82092aa_set_io_map
,
53 .set_mem_map
= i82092aa_set_mem_map
,
56 /* The card can do up to 4 sockets, allocate a structure for each of them */
60 int card_state
; /* 0 = no socket,
62 2 = card but not initialized,
63 3 = operational card */
64 unsigned int io_base
; /* base io address of the socket */
66 struct pcmcia_socket socket
;
67 struct pci_dev
*dev
; /* The PCI device for the socket */
71 static struct socket_info sockets
[MAX_SOCKETS
];
72 static int socket_count
; /* shortcut */
75 static int __devinit
i82092aa_pci_probe(struct pci_dev
*dev
, const struct pci_device_id
*id
)
77 unsigned char configbyte
;
80 enter("i82092aa_pci_probe");
82 if ((ret
= pci_enable_device(dev
)))
85 pci_read_config_byte(dev
, 0x40, &configbyte
); /* PCI Configuration Control */
86 switch(configbyte
&6) {
99 printk(KERN_ERR
"i82092aa: Oops, you did something we didn't think of.\n");
101 goto err_out_disable
;
103 printk(KERN_INFO
"i82092aa: configured as a %d socket device.\n", socket_count
);
105 if (!request_region(pci_resource_start(dev
, 0), 2, "i82092aa")) {
107 goto err_out_disable
;
110 for (i
= 0;i
<socket_count
;i
++) {
111 sockets
[i
].card_state
= 1; /* 1 = present but empty */
112 sockets
[i
].io_base
= pci_resource_start(dev
, 0);
113 sockets
[i
].socket
.features
|= SS_CAP_PCCARD
;
114 sockets
[i
].socket
.map_size
= 0x1000;
115 sockets
[i
].socket
.irq_mask
= 0;
116 sockets
[i
].socket
.pci_irq
= dev
->irq
;
117 sockets
[i
].socket
.cb_dev
= dev
;
118 sockets
[i
].socket
.owner
= THIS_MODULE
;
120 sockets
[i
].number
= i
;
122 if (card_present(i
)) {
123 sockets
[i
].card_state
= 3;
124 dprintk(KERN_DEBUG
"i82092aa: slot %i is occupied\n",i
);
126 dprintk(KERN_DEBUG
"i82092aa: slot %i is vacant\n",i
);
130 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
131 configbyte
= 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
132 pci_write_config_byte(dev
, 0x50, configbyte
); /* PCI Interrupt Routing Register */
134 /* Register the interrupt handler */
135 dprintk(KERN_DEBUG
"Requesting interrupt %i \n",dev
->irq
);
136 if ((ret
= request_irq(dev
->irq
, i82092aa_interrupt
, IRQF_SHARED
, "i82092aa", i82092aa_interrupt
))) {
137 printk(KERN_ERR
"i82092aa: Failed to register IRQ %d, aborting\n", dev
->irq
);
138 goto err_out_free_res
;
141 pci_set_drvdata(dev
, &sockets
[i
].socket
);
143 for (i
= 0; i
<socket_count
; i
++) {
144 sockets
[i
].socket
.dev
.parent
= &dev
->dev
;
145 sockets
[i
].socket
.ops
= &i82092aa_operations
;
146 sockets
[i
].socket
.resource_ops
= &pccard_nonstatic_ops
;
147 ret
= pcmcia_register_socket(&sockets
[i
].socket
);
149 goto err_out_free_sockets
;
153 leave("i82092aa_pci_probe");
156 err_out_free_sockets
:
159 pcmcia_unregister_socket(&sockets
[i
].socket
);
162 free_irq(dev
->irq
, i82092aa_interrupt
);
164 release_region(pci_resource_start(dev
, 0), 2);
166 pci_disable_device(dev
);
170 static void __devexit
i82092aa_pci_remove(struct pci_dev
*dev
)
172 struct pcmcia_socket
*socket
= pci_get_drvdata(dev
);
174 enter("i82092aa_pci_remove");
176 free_irq(dev
->irq
, i82092aa_interrupt
);
179 pcmcia_unregister_socket(socket
);
181 leave("i82092aa_pci_remove");
184 static DEFINE_SPINLOCK(port_lock
);
186 /* basic value read/write functions */
188 static unsigned char indirect_read(int socket
, unsigned short reg
)
190 unsigned short int port
;
193 spin_lock_irqsave(&port_lock
,flags
);
194 reg
+= socket
* 0x40;
195 port
= sockets
[socket
].io_base
;
198 spin_unlock_irqrestore(&port_lock
,flags
);
203 static unsigned short indirect_read16(int socket
, unsigned short reg
)
205 unsigned short int port
;
208 spin_lock_irqsave(&port_lock
,flags
);
209 reg
= reg
+ socket
* 0x40;
210 port
= sockets
[socket
].io_base
;
215 tmp
= tmp
| (inb(port
+1)<<8);
216 spin_unlock_irqrestore(&port_lock
,flags
);
221 static void indirect_write(int socket
, unsigned short reg
, unsigned char value
)
223 unsigned short int port
;
225 spin_lock_irqsave(&port_lock
,flags
);
226 reg
= reg
+ socket
* 0x40;
227 port
= sockets
[socket
].io_base
;
230 spin_unlock_irqrestore(&port_lock
,flags
);
233 static void indirect_setbit(int socket
, unsigned short reg
, unsigned char mask
)
235 unsigned short int port
;
238 spin_lock_irqsave(&port_lock
,flags
);
239 reg
= reg
+ socket
* 0x40;
240 port
= sockets
[socket
].io_base
;
246 spin_unlock_irqrestore(&port_lock
,flags
);
250 static void indirect_resetbit(int socket
, unsigned short reg
, unsigned char mask
)
252 unsigned short int port
;
255 spin_lock_irqsave(&port_lock
,flags
);
256 reg
= reg
+ socket
* 0x40;
257 port
= sockets
[socket
].io_base
;
263 spin_unlock_irqrestore(&port_lock
,flags
);
266 static void indirect_write16(int socket
, unsigned short reg
, unsigned short value
)
268 unsigned short int port
;
271 spin_lock_irqsave(&port_lock
,flags
);
272 reg
= reg
+ socket
* 0x40;
273 port
= sockets
[socket
].io_base
;
284 spin_unlock_irqrestore(&port_lock
,flags
);
287 /* simple helper functions */
288 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
289 static int cycle_time
= 120;
291 static int to_cycles(int ns
)
294 return ns
/cycle_time
;
300 /* Interrupt handler functionality */
302 static irqreturn_t
i82092aa_interrupt(int irq
, void *dev
)
308 unsigned int events
, active
=0;
310 /* enter("i82092aa_interrupt");*/
315 printk(KERN_ERR
"i82092aa: infinite eventloop in interrupt \n");
321 for (i
=0;i
<socket_count
;i
++) {
323 if (sockets
[i
].card_state
==0) /* Inactive socket, should not happen */
326 csc
= indirect_read(i
,I365_CSC
); /* card status change register */
328 if (csc
==0) /* no events on this socket */
333 if (csc
& I365_CSC_DETECT
) {
335 printk("Card detected in socket %i!\n",i
);
338 if (indirect_read(i
,I365_INTCTL
) & I365_PC_IOCARD
) {
339 /* For IO/CARDS, bit 0 means "read the card" */
340 events
|= (csc
& I365_CSC_STSCHG
) ? SS_STSCHG
: 0;
342 /* Check for battery/ready events */
343 events
|= (csc
& I365_CSC_BVD1
) ? SS_BATDEAD
: 0;
344 events
|= (csc
& I365_CSC_BVD2
) ? SS_BATWARN
: 0;
345 events
|= (csc
& I365_CSC_READY
) ? SS_READY
: 0;
349 pcmcia_parse_events(&sockets
[i
].socket
, events
);
354 if (active
==0) /* no more events to handle */
358 return IRQ_RETVAL(handled
);
359 /* leave("i82092aa_interrupt");*/
364 /* socket functions */
366 static int card_present(int socketno
)
369 enter("card_present");
371 if ((socketno
<0) || (socketno
>= MAX_SOCKETS
))
373 if (sockets
[socketno
].io_base
== 0)
377 val
= indirect_read(socketno
, 1); /* Interface status register */
379 leave("card_present 1");
383 leave("card_present 0");
387 static void set_bridge_state(int sock
)
389 enter("set_bridge_state");
390 indirect_write(sock
, I365_GBLCTL
,0x00);
391 indirect_write(sock
, I365_GENCTL
,0x00);
393 indirect_setbit(sock
, I365_INTCTL
,0x08);
394 leave("set_bridge_state");
402 static int i82092aa_init(struct pcmcia_socket
*sock
)
405 struct resource res
= { .start
= 0, .end
= 0x0fff };
406 pccard_io_map io
= { 0, 0, 0, 0, 1 };
407 pccard_mem_map mem
= { .res
= &res
, };
409 enter("i82092aa_init");
411 for (i
= 0; i
< 2; i
++) {
413 i82092aa_set_io_map(sock
, &io
);
415 for (i
= 0; i
< 5; i
++) {
417 i82092aa_set_mem_map(sock
, &mem
);
420 leave("i82092aa_init");
424 static int i82092aa_get_status(struct pcmcia_socket
*socket
, u_int
*value
)
426 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
429 enter("i82092aa_get_status");
431 status
= indirect_read(sock
,I365_STATUS
); /* Interface Status Register */
434 if ((status
& I365_CS_DETECT
) == I365_CS_DETECT
) {
438 /* IO cards have a different meaning of bits 0,1 */
439 /* Also notice the inverse-logic on the bits */
440 if (indirect_read(sock
, I365_INTCTL
) & I365_PC_IOCARD
) {
442 if (!(status
& I365_CS_STSCHG
))
444 } else { /* non I/O card */
445 if (!(status
& I365_CS_BVD1
))
446 *value
|= SS_BATDEAD
;
447 if (!(status
& I365_CS_BVD2
))
448 *value
|= SS_BATWARN
;
452 if (status
& I365_CS_WRPROT
)
453 (*value
) |= SS_WRPROT
; /* card is write protected */
455 if (status
& I365_CS_READY
)
456 (*value
) |= SS_READY
; /* card is not busy */
458 if (status
& I365_CS_POWERON
)
459 (*value
) |= SS_POWERON
; /* power is applied to the card */
462 leave("i82092aa_get_status");
467 static int i82092aa_set_socket(struct pcmcia_socket
*socket
, socket_state_t
*state
)
469 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
472 enter("i82092aa_set_socket");
474 /* First, set the global controller options */
476 set_bridge_state(sock
);
478 /* Values for the IGENC register */
481 if (!(state
->flags
& SS_RESET
)) /* The reset bit has "inverse" logic */
482 reg
= reg
| I365_PC_RESET
;
483 if (state
->flags
& SS_IOCARD
)
484 reg
= reg
| I365_PC_IOCARD
;
486 indirect_write(sock
,I365_INTCTL
,reg
); /* IGENC, Interrupt and General Control Register */
488 /* Power registers */
490 reg
= I365_PWR_NORESET
; /* default: disable resetdrv on resume */
492 if (state
->flags
& SS_PWR_AUTO
) {
493 printk("Auto power\n");
494 reg
|= I365_PWR_AUTO
; /* automatic power mngmnt */
496 if (state
->flags
& SS_OUTPUT_ENA
) {
497 printk("Power Enabled \n");
498 reg
|= I365_PWR_OUT
; /* enable power */
501 switch (state
->Vcc
) {
505 printk("setting voltage to Vcc to 5V on socket %i\n",sock
);
509 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state
->Vcc
);
510 leave("i82092aa_set_socket");
515 switch (state
->Vpp
) {
517 printk("not setting Vpp on socket %i\n",sock
);
520 printk("setting Vpp to 5.0 for socket %i\n",sock
);
521 reg
|= I365_VPP1_5V
| I365_VPP2_5V
;
524 printk("setting Vpp to 12.0\n");
525 reg
|= I365_VPP1_12V
| I365_VPP2_12V
;
528 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state
->Vcc
);
529 leave("i82092aa_set_socket");
533 if (reg
!= indirect_read(sock
,I365_POWER
)) /* only write if changed */
534 indirect_write(sock
,I365_POWER
,reg
);
536 /* Enable specific interrupt events */
539 if (state
->csc_mask
& SS_DETECT
) {
540 reg
|= I365_CSC_DETECT
;
542 if (state
->flags
& SS_IOCARD
) {
543 if (state
->csc_mask
& SS_STSCHG
)
544 reg
|= I365_CSC_STSCHG
;
546 if (state
->csc_mask
& SS_BATDEAD
)
547 reg
|= I365_CSC_BVD1
;
548 if (state
->csc_mask
& SS_BATWARN
)
549 reg
|= I365_CSC_BVD2
;
550 if (state
->csc_mask
& SS_READY
)
551 reg
|= I365_CSC_READY
;
555 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
557 indirect_write(sock
,I365_CSCINT
,reg
);
558 (void)indirect_read(sock
,I365_CSC
);
560 leave("i82092aa_set_socket");
564 static int i82092aa_set_io_map(struct pcmcia_socket
*socket
, struct pccard_io_map
*io
)
566 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
567 unsigned char map
, ioctl
;
569 enter("i82092aa_set_io_map");
573 /* Check error conditions */
575 leave("i82092aa_set_io_map with invalid map");
578 if ((io
->start
> 0xffff) || (io
->stop
> 0xffff) || (io
->stop
< io
->start
)){
579 leave("i82092aa_set_io_map with invalid io");
583 /* Turn off the window before changing anything */
584 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_IO(map
))
585 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_IO(map
));
587 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
589 /* write the new values */
590 indirect_write16(sock
,I365_IO(map
)+I365_W_START
,io
->start
);
591 indirect_write16(sock
,I365_IO(map
)+I365_W_STOP
,io
->stop
);
593 ioctl
= indirect_read(sock
,I365_IOCTL
) & ~I365_IOCTL_MASK(map
);
595 if (io
->flags
& (MAP_16BIT
|MAP_AUTOSZ
))
596 ioctl
|= I365_IOCTL_16BIT(map
);
598 indirect_write(sock
,I365_IOCTL
,ioctl
);
600 /* Turn the window back on if needed */
601 if (io
->flags
& MAP_ACTIVE
)
602 indirect_setbit(sock
,I365_ADDRWIN
,I365_ENA_IO(map
));
604 leave("i82092aa_set_io_map");
608 static int i82092aa_set_mem_map(struct pcmcia_socket
*socket
, struct pccard_mem_map
*mem
)
610 struct socket_info
*sock_info
= container_of(socket
, struct socket_info
, socket
);
611 unsigned int sock
= sock_info
->number
;
612 struct pci_bus_region region
;
613 unsigned short base
, i
;
616 enter("i82092aa_set_mem_map");
618 pcibios_resource_to_bus(sock_info
->dev
, ®ion
, mem
->res
);
622 leave("i82092aa_set_mem_map: invalid map");
627 if ( (mem
->card_start
> 0x3ffffff) || (region
.start
> region
.end
) ||
628 (mem
->speed
> 1000) ) {
629 leave("i82092aa_set_mem_map: invalid address / speed");
630 printk("invalid mem map for socket %i: %llx to %llx with a "
633 (unsigned long long)region
.start
,
634 (unsigned long long)region
.end
,
639 /* Turn off the window before changing anything */
640 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_MEM(map
))
641 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
644 /* printk("set_mem_map: Setting map %i range to %x - %x on socket %i, speed is %i, active = %i \n",map, region.start,region.end,sock,mem->speed,mem->flags & MAP_ACTIVE); */
646 /* write the start address */
647 base
= I365_MEM(map
);
648 i
= (region
.start
>> 12) & 0x0fff;
649 if (mem
->flags
& MAP_16BIT
)
651 if (mem
->flags
& MAP_0WS
)
653 indirect_write16(sock
,base
+I365_W_START
,i
);
655 /* write the stop address */
657 i
= (region
.end
>> 12) & 0x0fff;
658 switch (to_cycles(mem
->speed
)) {
668 i
|= I365_MEM_WS1
| I365_MEM_WS0
;
672 indirect_write16(sock
,base
+I365_W_STOP
,i
);
676 i
= ((mem
->card_start
- region
.start
) >> 12) & 0x3fff;
677 if (mem
->flags
& MAP_WRPROT
)
678 i
|= I365_MEM_WRPROT
;
679 if (mem
->flags
& MAP_ATTRIB
) {
680 /* printk("requesting attribute memory for socket %i\n",sock);*/
683 /* printk("requesting normal memory for socket %i\n",sock);*/
685 indirect_write16(sock
,base
+I365_W_OFF
,i
);
687 /* Enable the window if necessary */
688 if (mem
->flags
& MAP_ACTIVE
)
689 indirect_setbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
691 leave("i82092aa_set_mem_map");
695 static int i82092aa_module_init(void)
697 return pci_register_driver(&i82092aa_pci_driver
);
700 static void i82092aa_module_exit(void)
702 enter("i82092aa_module_exit");
703 pci_unregister_driver(&i82092aa_pci_driver
);
704 if (sockets
[0].io_base
>0)
705 release_region(sockets
[0].io_base
, 2);
706 leave("i82092aa_module_exit");
709 module_init(i82092aa_module_init
);
710 module_exit(i82092aa_module_exit
);