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 DEFINE_PCI_DEVICE_TABLE(i82092aa_pci_ids
) = {
29 { PCI_DEVICE(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82092AA_0
) },
32 MODULE_DEVICE_TABLE(pci
, i82092aa_pci_ids
);
34 static struct pci_driver i82092aa_pci_driver
= {
36 .id_table
= i82092aa_pci_ids
,
37 .probe
= i82092aa_pci_probe
,
38 .remove
= __devexit_p(i82092aa_pci_remove
),
42 /* the pccard structure and its functions */
43 static struct pccard_operations i82092aa_operations
= {
44 .init
= i82092aa_init
,
45 .get_status
= i82092aa_get_status
,
46 .set_socket
= i82092aa_set_socket
,
47 .set_io_map
= i82092aa_set_io_map
,
48 .set_mem_map
= i82092aa_set_mem_map
,
51 /* The card can do up to 4 sockets, allocate a structure for each of them */
55 int card_state
; /* 0 = no socket,
57 2 = card but not initialized,
58 3 = operational card */
59 unsigned int io_base
; /* base io address of the socket */
61 struct pcmcia_socket socket
;
62 struct pci_dev
*dev
; /* The PCI device for the socket */
66 static struct socket_info sockets
[MAX_SOCKETS
];
67 static int socket_count
; /* shortcut */
70 static int __devinit
i82092aa_pci_probe(struct pci_dev
*dev
, const struct pci_device_id
*id
)
72 unsigned char configbyte
;
75 enter("i82092aa_pci_probe");
77 if ((ret
= pci_enable_device(dev
)))
80 pci_read_config_byte(dev
, 0x40, &configbyte
); /* PCI Configuration Control */
81 switch(configbyte
&6) {
94 printk(KERN_ERR
"i82092aa: Oops, you did something we didn't think of.\n");
98 printk(KERN_INFO
"i82092aa: configured as a %d socket device.\n", socket_count
);
100 if (!request_region(pci_resource_start(dev
, 0), 2, "i82092aa")) {
102 goto err_out_disable
;
105 for (i
= 0;i
<socket_count
;i
++) {
106 sockets
[i
].card_state
= 1; /* 1 = present but empty */
107 sockets
[i
].io_base
= pci_resource_start(dev
, 0);
108 sockets
[i
].socket
.features
|= SS_CAP_PCCARD
;
109 sockets
[i
].socket
.map_size
= 0x1000;
110 sockets
[i
].socket
.irq_mask
= 0;
111 sockets
[i
].socket
.pci_irq
= dev
->irq
;
112 sockets
[i
].socket
.cb_dev
= dev
;
113 sockets
[i
].socket
.owner
= THIS_MODULE
;
115 sockets
[i
].number
= i
;
117 if (card_present(i
)) {
118 sockets
[i
].card_state
= 3;
119 dprintk(KERN_DEBUG
"i82092aa: slot %i is occupied\n",i
);
121 dprintk(KERN_DEBUG
"i82092aa: slot %i is vacant\n",i
);
125 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
126 configbyte
= 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
127 pci_write_config_byte(dev
, 0x50, configbyte
); /* PCI Interrupt Routing Register */
129 /* Register the interrupt handler */
130 dprintk(KERN_DEBUG
"Requesting interrupt %i \n",dev
->irq
);
131 if ((ret
= request_irq(dev
->irq
, i82092aa_interrupt
, IRQF_SHARED
, "i82092aa", i82092aa_interrupt
))) {
132 printk(KERN_ERR
"i82092aa: Failed to register IRQ %d, aborting\n", dev
->irq
);
133 goto err_out_free_res
;
136 pci_set_drvdata(dev
, &sockets
[i
].socket
);
138 for (i
= 0; i
<socket_count
; i
++) {
139 sockets
[i
].socket
.dev
.parent
= &dev
->dev
;
140 sockets
[i
].socket
.ops
= &i82092aa_operations
;
141 sockets
[i
].socket
.resource_ops
= &pccard_nonstatic_ops
;
142 ret
= pcmcia_register_socket(&sockets
[i
].socket
);
144 goto err_out_free_sockets
;
148 leave("i82092aa_pci_probe");
151 err_out_free_sockets
:
154 pcmcia_unregister_socket(&sockets
[i
].socket
);
157 free_irq(dev
->irq
, i82092aa_interrupt
);
159 release_region(pci_resource_start(dev
, 0), 2);
161 pci_disable_device(dev
);
165 static void __devexit
i82092aa_pci_remove(struct pci_dev
*dev
)
167 struct pcmcia_socket
*socket
= pci_get_drvdata(dev
);
169 enter("i82092aa_pci_remove");
171 free_irq(dev
->irq
, i82092aa_interrupt
);
174 pcmcia_unregister_socket(socket
);
176 leave("i82092aa_pci_remove");
179 static DEFINE_SPINLOCK(port_lock
);
181 /* basic value read/write functions */
183 static unsigned char indirect_read(int socket
, unsigned short reg
)
185 unsigned short int port
;
188 spin_lock_irqsave(&port_lock
,flags
);
189 reg
+= socket
* 0x40;
190 port
= sockets
[socket
].io_base
;
193 spin_unlock_irqrestore(&port_lock
,flags
);
198 static unsigned short indirect_read16(int socket
, unsigned short reg
)
200 unsigned short int port
;
203 spin_lock_irqsave(&port_lock
,flags
);
204 reg
= reg
+ socket
* 0x40;
205 port
= sockets
[socket
].io_base
;
210 tmp
= tmp
| (inb(port
+1)<<8);
211 spin_unlock_irqrestore(&port_lock
,flags
);
216 static void indirect_write(int socket
, unsigned short reg
, unsigned char value
)
218 unsigned short int port
;
220 spin_lock_irqsave(&port_lock
,flags
);
221 reg
= reg
+ socket
* 0x40;
222 port
= sockets
[socket
].io_base
;
225 spin_unlock_irqrestore(&port_lock
,flags
);
228 static void indirect_setbit(int socket
, unsigned short reg
, unsigned char mask
)
230 unsigned short int port
;
233 spin_lock_irqsave(&port_lock
,flags
);
234 reg
= reg
+ socket
* 0x40;
235 port
= sockets
[socket
].io_base
;
241 spin_unlock_irqrestore(&port_lock
,flags
);
245 static void indirect_resetbit(int socket
, unsigned short reg
, unsigned char mask
)
247 unsigned short int port
;
250 spin_lock_irqsave(&port_lock
,flags
);
251 reg
= reg
+ socket
* 0x40;
252 port
= sockets
[socket
].io_base
;
258 spin_unlock_irqrestore(&port_lock
,flags
);
261 static void indirect_write16(int socket
, unsigned short reg
, unsigned short value
)
263 unsigned short int port
;
266 spin_lock_irqsave(&port_lock
,flags
);
267 reg
= reg
+ socket
* 0x40;
268 port
= sockets
[socket
].io_base
;
279 spin_unlock_irqrestore(&port_lock
,flags
);
282 /* simple helper functions */
283 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
284 static int cycle_time
= 120;
286 static int to_cycles(int ns
)
289 return ns
/cycle_time
;
295 /* Interrupt handler functionality */
297 static irqreturn_t
i82092aa_interrupt(int irq
, void *dev
)
303 unsigned int events
, active
=0;
305 /* enter("i82092aa_interrupt");*/
310 printk(KERN_ERR
"i82092aa: infinite eventloop in interrupt \n");
316 for (i
=0;i
<socket_count
;i
++) {
318 if (sockets
[i
].card_state
==0) /* Inactive socket, should not happen */
321 csc
= indirect_read(i
,I365_CSC
); /* card status change register */
323 if (csc
==0) /* no events on this socket */
328 if (csc
& I365_CSC_DETECT
) {
330 printk("Card detected in socket %i!\n",i
);
333 if (indirect_read(i
,I365_INTCTL
) & I365_PC_IOCARD
) {
334 /* For IO/CARDS, bit 0 means "read the card" */
335 events
|= (csc
& I365_CSC_STSCHG
) ? SS_STSCHG
: 0;
337 /* Check for battery/ready events */
338 events
|= (csc
& I365_CSC_BVD1
) ? SS_BATDEAD
: 0;
339 events
|= (csc
& I365_CSC_BVD2
) ? SS_BATWARN
: 0;
340 events
|= (csc
& I365_CSC_READY
) ? SS_READY
: 0;
344 pcmcia_parse_events(&sockets
[i
].socket
, events
);
349 if (active
==0) /* no more events to handle */
353 return IRQ_RETVAL(handled
);
354 /* leave("i82092aa_interrupt");*/
359 /* socket functions */
361 static int card_present(int socketno
)
364 enter("card_present");
366 if ((socketno
<0) || (socketno
>= MAX_SOCKETS
))
368 if (sockets
[socketno
].io_base
== 0)
372 val
= indirect_read(socketno
, 1); /* Interface status register */
374 leave("card_present 1");
378 leave("card_present 0");
382 static void set_bridge_state(int sock
)
384 enter("set_bridge_state");
385 indirect_write(sock
, I365_GBLCTL
,0x00);
386 indirect_write(sock
, I365_GENCTL
,0x00);
388 indirect_setbit(sock
, I365_INTCTL
,0x08);
389 leave("set_bridge_state");
397 static int i82092aa_init(struct pcmcia_socket
*sock
)
400 struct resource res
= { .start
= 0, .end
= 0x0fff };
401 pccard_io_map io
= { 0, 0, 0, 0, 1 };
402 pccard_mem_map mem
= { .res
= &res
, };
404 enter("i82092aa_init");
406 for (i
= 0; i
< 2; i
++) {
408 i82092aa_set_io_map(sock
, &io
);
410 for (i
= 0; i
< 5; i
++) {
412 i82092aa_set_mem_map(sock
, &mem
);
415 leave("i82092aa_init");
419 static int i82092aa_get_status(struct pcmcia_socket
*socket
, u_int
*value
)
421 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
424 enter("i82092aa_get_status");
426 status
= indirect_read(sock
,I365_STATUS
); /* Interface Status Register */
429 if ((status
& I365_CS_DETECT
) == I365_CS_DETECT
) {
433 /* IO cards have a different meaning of bits 0,1 */
434 /* Also notice the inverse-logic on the bits */
435 if (indirect_read(sock
, I365_INTCTL
) & I365_PC_IOCARD
) {
437 if (!(status
& I365_CS_STSCHG
))
439 } else { /* non I/O card */
440 if (!(status
& I365_CS_BVD1
))
441 *value
|= SS_BATDEAD
;
442 if (!(status
& I365_CS_BVD2
))
443 *value
|= SS_BATWARN
;
447 if (status
& I365_CS_WRPROT
)
448 (*value
) |= SS_WRPROT
; /* card is write protected */
450 if (status
& I365_CS_READY
)
451 (*value
) |= SS_READY
; /* card is not busy */
453 if (status
& I365_CS_POWERON
)
454 (*value
) |= SS_POWERON
; /* power is applied to the card */
457 leave("i82092aa_get_status");
462 static int i82092aa_set_socket(struct pcmcia_socket
*socket
, socket_state_t
*state
)
464 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
467 enter("i82092aa_set_socket");
469 /* First, set the global controller options */
471 set_bridge_state(sock
);
473 /* Values for the IGENC register */
476 if (!(state
->flags
& SS_RESET
)) /* The reset bit has "inverse" logic */
477 reg
= reg
| I365_PC_RESET
;
478 if (state
->flags
& SS_IOCARD
)
479 reg
= reg
| I365_PC_IOCARD
;
481 indirect_write(sock
,I365_INTCTL
,reg
); /* IGENC, Interrupt and General Control Register */
483 /* Power registers */
485 reg
= I365_PWR_NORESET
; /* default: disable resetdrv on resume */
487 if (state
->flags
& SS_PWR_AUTO
) {
488 printk("Auto power\n");
489 reg
|= I365_PWR_AUTO
; /* automatic power mngmnt */
491 if (state
->flags
& SS_OUTPUT_ENA
) {
492 printk("Power Enabled \n");
493 reg
|= I365_PWR_OUT
; /* enable power */
496 switch (state
->Vcc
) {
500 printk("setting voltage to Vcc to 5V on socket %i\n",sock
);
504 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state
->Vcc
);
505 leave("i82092aa_set_socket");
510 switch (state
->Vpp
) {
512 printk("not setting Vpp on socket %i\n",sock
);
515 printk("setting Vpp to 5.0 for socket %i\n",sock
);
516 reg
|= I365_VPP1_5V
| I365_VPP2_5V
;
519 printk("setting Vpp to 12.0\n");
520 reg
|= I365_VPP1_12V
| I365_VPP2_12V
;
523 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state
->Vcc
);
524 leave("i82092aa_set_socket");
528 if (reg
!= indirect_read(sock
,I365_POWER
)) /* only write if changed */
529 indirect_write(sock
,I365_POWER
,reg
);
531 /* Enable specific interrupt events */
534 if (state
->csc_mask
& SS_DETECT
) {
535 reg
|= I365_CSC_DETECT
;
537 if (state
->flags
& SS_IOCARD
) {
538 if (state
->csc_mask
& SS_STSCHG
)
539 reg
|= I365_CSC_STSCHG
;
541 if (state
->csc_mask
& SS_BATDEAD
)
542 reg
|= I365_CSC_BVD1
;
543 if (state
->csc_mask
& SS_BATWARN
)
544 reg
|= I365_CSC_BVD2
;
545 if (state
->csc_mask
& SS_READY
)
546 reg
|= I365_CSC_READY
;
550 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
552 indirect_write(sock
,I365_CSCINT
,reg
);
553 (void)indirect_read(sock
,I365_CSC
);
555 leave("i82092aa_set_socket");
559 static int i82092aa_set_io_map(struct pcmcia_socket
*socket
, struct pccard_io_map
*io
)
561 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
562 unsigned char map
, ioctl
;
564 enter("i82092aa_set_io_map");
568 /* Check error conditions */
570 leave("i82092aa_set_io_map with invalid map");
573 if ((io
->start
> 0xffff) || (io
->stop
> 0xffff) || (io
->stop
< io
->start
)){
574 leave("i82092aa_set_io_map with invalid io");
578 /* Turn off the window before changing anything */
579 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_IO(map
))
580 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_IO(map
));
582 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
584 /* write the new values */
585 indirect_write16(sock
,I365_IO(map
)+I365_W_START
,io
->start
);
586 indirect_write16(sock
,I365_IO(map
)+I365_W_STOP
,io
->stop
);
588 ioctl
= indirect_read(sock
,I365_IOCTL
) & ~I365_IOCTL_MASK(map
);
590 if (io
->flags
& (MAP_16BIT
|MAP_AUTOSZ
))
591 ioctl
|= I365_IOCTL_16BIT(map
);
593 indirect_write(sock
,I365_IOCTL
,ioctl
);
595 /* Turn the window back on if needed */
596 if (io
->flags
& MAP_ACTIVE
)
597 indirect_setbit(sock
,I365_ADDRWIN
,I365_ENA_IO(map
));
599 leave("i82092aa_set_io_map");
603 static int i82092aa_set_mem_map(struct pcmcia_socket
*socket
, struct pccard_mem_map
*mem
)
605 struct socket_info
*sock_info
= container_of(socket
, struct socket_info
, socket
);
606 unsigned int sock
= sock_info
->number
;
607 struct pci_bus_region region
;
608 unsigned short base
, i
;
611 enter("i82092aa_set_mem_map");
613 pcibios_resource_to_bus(sock_info
->dev
, ®ion
, mem
->res
);
617 leave("i82092aa_set_mem_map: invalid map");
622 if ( (mem
->card_start
> 0x3ffffff) || (region
.start
> region
.end
) ||
623 (mem
->speed
> 1000) ) {
624 leave("i82092aa_set_mem_map: invalid address / speed");
625 printk("invalid mem map for socket %i: %llx to %llx with a "
628 (unsigned long long)region
.start
,
629 (unsigned long long)region
.end
,
634 /* Turn off the window before changing anything */
635 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_MEM(map
))
636 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
639 /* 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); */
641 /* write the start address */
642 base
= I365_MEM(map
);
643 i
= (region
.start
>> 12) & 0x0fff;
644 if (mem
->flags
& MAP_16BIT
)
646 if (mem
->flags
& MAP_0WS
)
648 indirect_write16(sock
,base
+I365_W_START
,i
);
650 /* write the stop address */
652 i
= (region
.end
>> 12) & 0x0fff;
653 switch (to_cycles(mem
->speed
)) {
663 i
|= I365_MEM_WS1
| I365_MEM_WS0
;
667 indirect_write16(sock
,base
+I365_W_STOP
,i
);
671 i
= ((mem
->card_start
- region
.start
) >> 12) & 0x3fff;
672 if (mem
->flags
& MAP_WRPROT
)
673 i
|= I365_MEM_WRPROT
;
674 if (mem
->flags
& MAP_ATTRIB
) {
675 /* printk("requesting attribute memory for socket %i\n",sock);*/
678 /* printk("requesting normal memory for socket %i\n",sock);*/
680 indirect_write16(sock
,base
+I365_W_OFF
,i
);
682 /* Enable the window if necessary */
683 if (mem
->flags
& MAP_ACTIVE
)
684 indirect_setbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
686 leave("i82092aa_set_mem_map");
690 static int i82092aa_module_init(void)
692 return pci_register_driver(&i82092aa_pci_driver
);
695 static void i82092aa_module_exit(void)
697 enter("i82092aa_module_exit");
698 pci_unregister_driver(&i82092aa_pci_driver
);
699 if (sockets
[0].io_base
>0)
700 release_region(sockets
[0].io_base
, 2);
701 leave("i82092aa_module_exit");
704 module_init(i82092aa_module_init
);
705 module_exit(i82092aa_module_exit
);