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
9 * $Id: i82092aa.c,v 1.2 2001/10/23 14:43:34 arjanv Exp $
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/pci.h>
15 #include <linux/init.h>
16 #include <linux/workqueue.h>
17 #include <linux/interrupt.h>
18 #include <linux/device.h>
20 #include <pcmcia/cs_types.h>
21 #include <pcmcia/ss.h>
22 #include <pcmcia/cs.h>
24 #include <asm/system.h>
30 MODULE_LICENSE("GPL");
32 /* PCI core routines */
33 static struct pci_device_id i82092aa_pci_ids
[] = {
35 .vendor
= PCI_VENDOR_ID_INTEL
,
36 .device
= PCI_DEVICE_ID_INTEL_82092AA_0
,
37 .subvendor
= PCI_ANY_ID
,
38 .subdevice
= PCI_ANY_ID
,
42 MODULE_DEVICE_TABLE(pci
, i82092aa_pci_ids
);
45 static int i82092aa_socket_suspend (struct pci_dev
*dev
, pm_message_t state
)
47 return pcmcia_socket_dev_suspend(&dev
->dev
, state
);
50 static int i82092aa_socket_resume (struct pci_dev
*dev
)
52 return pcmcia_socket_dev_resume(&dev
->dev
);
56 static struct pci_driver i82092aa_pci_drv
= {
58 .id_table
= i82092aa_pci_ids
,
59 .probe
= i82092aa_pci_probe
,
60 .remove
= __devexit_p(i82092aa_pci_remove
),
62 .suspend
= i82092aa_socket_suspend
,
63 .resume
= i82092aa_socket_resume
,
68 /* the pccard structure and its functions */
69 static struct pccard_operations i82092aa_operations
= {
70 .init
= i82092aa_init
,
71 .get_status
= i82092aa_get_status
,
72 .set_socket
= i82092aa_set_socket
,
73 .set_io_map
= i82092aa_set_io_map
,
74 .set_mem_map
= i82092aa_set_mem_map
,
77 /* The card can do upto 4 sockets, allocate a structure for each of them */
81 int card_state
; /* 0 = no socket,
83 2 = card but not initialized,
84 3 = operational card */
85 kio_addr_t io_base
; /* base io address of the socket */
87 struct pcmcia_socket socket
;
88 struct pci_dev
*dev
; /* The PCI device for the socket */
92 static struct socket_info sockets
[MAX_SOCKETS
];
93 static int socket_count
; /* shortcut */
96 static int __devinit
i82092aa_pci_probe(struct pci_dev
*dev
, const struct pci_device_id
*id
)
98 unsigned char configbyte
;
101 enter("i82092aa_pci_probe");
103 if ((ret
= pci_enable_device(dev
)))
106 pci_read_config_byte(dev
, 0x40, &configbyte
); /* PCI Configuration Control */
107 switch(configbyte
&6) {
120 printk(KERN_ERR
"i82092aa: Oops, you did something we didn't think of.\n");
122 goto err_out_disable
;
124 printk(KERN_INFO
"i82092aa: configured as a %d socket device.\n", socket_count
);
126 if (!request_region(pci_resource_start(dev
, 0), 2, "i82092aa")) {
128 goto err_out_disable
;
131 for (i
= 0;i
<socket_count
;i
++) {
132 sockets
[i
].card_state
= 1; /* 1 = present but empty */
133 sockets
[i
].io_base
= pci_resource_start(dev
, 0);
134 sockets
[i
].socket
.features
|= SS_CAP_PCCARD
;
135 sockets
[i
].socket
.map_size
= 0x1000;
136 sockets
[i
].socket
.irq_mask
= 0;
137 sockets
[i
].socket
.pci_irq
= dev
->irq
;
138 sockets
[i
].socket
.owner
= THIS_MODULE
;
140 sockets
[i
].number
= i
;
142 if (card_present(i
)) {
143 sockets
[i
].card_state
= 3;
144 dprintk(KERN_DEBUG
"i82092aa: slot %i is occupied\n",i
);
146 dprintk(KERN_DEBUG
"i82092aa: slot %i is vacant\n",i
);
150 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
151 configbyte
= 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
152 pci_write_config_byte(dev
, 0x50, configbyte
); /* PCI Interrupt Routing Register */
154 /* Register the interrupt handler */
155 dprintk(KERN_DEBUG
"Requesting interrupt %i \n",dev
->irq
);
156 if ((ret
= request_irq(dev
->irq
, i82092aa_interrupt
, IRQF_SHARED
, "i82092aa", i82092aa_interrupt
))) {
157 printk(KERN_ERR
"i82092aa: Failed to register IRQ %d, aborting\n", dev
->irq
);
158 goto err_out_free_res
;
161 pci_set_drvdata(dev
, &sockets
[i
].socket
);
163 for (i
= 0; i
<socket_count
; i
++) {
164 sockets
[i
].socket
.dev
.dev
= &dev
->dev
;
165 sockets
[i
].socket
.ops
= &i82092aa_operations
;
166 sockets
[i
].socket
.resource_ops
= &pccard_nonstatic_ops
;
167 ret
= pcmcia_register_socket(&sockets
[i
].socket
);
169 goto err_out_free_sockets
;
173 leave("i82092aa_pci_probe");
176 err_out_free_sockets
:
179 pcmcia_unregister_socket(&sockets
[i
].socket
);
182 free_irq(dev
->irq
, i82092aa_interrupt
);
184 release_region(pci_resource_start(dev
, 0), 2);
186 pci_disable_device(dev
);
190 static void __devexit
i82092aa_pci_remove(struct pci_dev
*dev
)
192 struct pcmcia_socket
*socket
= pci_get_drvdata(dev
);
194 enter("i82092aa_pci_remove");
196 free_irq(dev
->irq
, i82092aa_interrupt
);
199 pcmcia_unregister_socket(socket
);
201 leave("i82092aa_pci_remove");
204 static DEFINE_SPINLOCK(port_lock
);
206 /* basic value read/write functions */
208 static unsigned char indirect_read(int socket
, unsigned short reg
)
210 unsigned short int port
;
213 spin_lock_irqsave(&port_lock
,flags
);
214 reg
+= socket
* 0x40;
215 port
= sockets
[socket
].io_base
;
218 spin_unlock_irqrestore(&port_lock
,flags
);
223 static unsigned short indirect_read16(int socket
, unsigned short reg
)
225 unsigned short int port
;
228 spin_lock_irqsave(&port_lock
,flags
);
229 reg
= reg
+ socket
* 0x40;
230 port
= sockets
[socket
].io_base
;
235 tmp
= tmp
| (inb(port
+1)<<8);
236 spin_unlock_irqrestore(&port_lock
,flags
);
241 static void indirect_write(int socket
, unsigned short reg
, unsigned char value
)
243 unsigned short int port
;
245 spin_lock_irqsave(&port_lock
,flags
);
246 reg
= reg
+ socket
* 0x40;
247 port
= sockets
[socket
].io_base
;
250 spin_unlock_irqrestore(&port_lock
,flags
);
253 static void indirect_setbit(int socket
, unsigned short reg
, unsigned char mask
)
255 unsigned short int port
;
258 spin_lock_irqsave(&port_lock
,flags
);
259 reg
= reg
+ socket
* 0x40;
260 port
= sockets
[socket
].io_base
;
266 spin_unlock_irqrestore(&port_lock
,flags
);
270 static void indirect_resetbit(int socket
, unsigned short reg
, unsigned char mask
)
272 unsigned short int port
;
275 spin_lock_irqsave(&port_lock
,flags
);
276 reg
= reg
+ socket
* 0x40;
277 port
= sockets
[socket
].io_base
;
283 spin_unlock_irqrestore(&port_lock
,flags
);
286 static void indirect_write16(int socket
, unsigned short reg
, unsigned short value
)
288 unsigned short int port
;
291 spin_lock_irqsave(&port_lock
,flags
);
292 reg
= reg
+ socket
* 0x40;
293 port
= sockets
[socket
].io_base
;
304 spin_unlock_irqrestore(&port_lock
,flags
);
307 /* simple helper functions */
308 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
309 static int cycle_time
= 120;
311 static int to_cycles(int ns
)
314 return ns
/cycle_time
;
320 /* Interrupt handler functionality */
322 static irqreturn_t
i82092aa_interrupt(int irq
, void *dev
)
328 unsigned int events
, active
=0;
330 /* enter("i82092aa_interrupt");*/
335 printk(KERN_ERR
"i82092aa: infinite eventloop in interrupt \n");
341 for (i
=0;i
<socket_count
;i
++) {
343 if (sockets
[i
].card_state
==0) /* Inactive socket, should not happen */
346 csc
= indirect_read(i
,I365_CSC
); /* card status change register */
348 if (csc
==0) /* no events on this socket */
353 if (csc
& I365_CSC_DETECT
) {
355 printk("Card detected in socket %i!\n",i
);
358 if (indirect_read(i
,I365_INTCTL
) & I365_PC_IOCARD
) {
359 /* For IO/CARDS, bit 0 means "read the card" */
360 events
|= (csc
& I365_CSC_STSCHG
) ? SS_STSCHG
: 0;
362 /* Check for battery/ready events */
363 events
|= (csc
& I365_CSC_BVD1
) ? SS_BATDEAD
: 0;
364 events
|= (csc
& I365_CSC_BVD2
) ? SS_BATWARN
: 0;
365 events
|= (csc
& I365_CSC_READY
) ? SS_READY
: 0;
369 pcmcia_parse_events(&sockets
[i
].socket
, events
);
374 if (active
==0) /* no more events to handle */
378 return IRQ_RETVAL(handled
);
379 /* leave("i82092aa_interrupt");*/
384 /* socket functions */
386 static int card_present(int socketno
)
389 enter("card_present");
391 if ((socketno
<0) || (socketno
>= MAX_SOCKETS
))
393 if (sockets
[socketno
].io_base
== 0)
397 val
= indirect_read(socketno
, 1); /* Interface status register */
399 leave("card_present 1");
403 leave("card_present 0");
407 static void set_bridge_state(int sock
)
409 enter("set_bridge_state");
410 indirect_write(sock
, I365_GBLCTL
,0x00);
411 indirect_write(sock
, I365_GENCTL
,0x00);
413 indirect_setbit(sock
, I365_INTCTL
,0x08);
414 leave("set_bridge_state");
422 static int i82092aa_init(struct pcmcia_socket
*sock
)
425 struct resource res
= { .start
= 0, .end
= 0x0fff };
426 pccard_io_map io
= { 0, 0, 0, 0, 1 };
427 pccard_mem_map mem
= { .res
= &res
, };
429 enter("i82092aa_init");
431 for (i
= 0; i
< 2; i
++) {
433 i82092aa_set_io_map(sock
, &io
);
435 for (i
= 0; i
< 5; i
++) {
437 i82092aa_set_mem_map(sock
, &mem
);
440 leave("i82092aa_init");
444 static int i82092aa_get_status(struct pcmcia_socket
*socket
, u_int
*value
)
446 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
449 enter("i82092aa_get_status");
451 status
= indirect_read(sock
,I365_STATUS
); /* Interface Status Register */
454 if ((status
& I365_CS_DETECT
) == I365_CS_DETECT
) {
458 /* IO cards have a different meaning of bits 0,1 */
459 /* Also notice the inverse-logic on the bits */
460 if (indirect_read(sock
, I365_INTCTL
) & I365_PC_IOCARD
) {
462 if (!(status
& I365_CS_STSCHG
))
464 } else { /* non I/O card */
465 if (!(status
& I365_CS_BVD1
))
466 *value
|= SS_BATDEAD
;
467 if (!(status
& I365_CS_BVD2
))
468 *value
|= SS_BATWARN
;
472 if (status
& I365_CS_WRPROT
)
473 (*value
) |= SS_WRPROT
; /* card is write protected */
475 if (status
& I365_CS_READY
)
476 (*value
) |= SS_READY
; /* card is not busy */
478 if (status
& I365_CS_POWERON
)
479 (*value
) |= SS_POWERON
; /* power is applied to the card */
482 leave("i82092aa_get_status");
487 static int i82092aa_set_socket(struct pcmcia_socket
*socket
, socket_state_t
*state
)
489 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
492 enter("i82092aa_set_socket");
494 /* First, set the global controller options */
496 set_bridge_state(sock
);
498 /* Values for the IGENC register */
501 if (!(state
->flags
& SS_RESET
)) /* The reset bit has "inverse" logic */
502 reg
= reg
| I365_PC_RESET
;
503 if (state
->flags
& SS_IOCARD
)
504 reg
= reg
| I365_PC_IOCARD
;
506 indirect_write(sock
,I365_INTCTL
,reg
); /* IGENC, Interrupt and General Control Register */
508 /* Power registers */
510 reg
= I365_PWR_NORESET
; /* default: disable resetdrv on resume */
512 if (state
->flags
& SS_PWR_AUTO
) {
513 printk("Auto power\n");
514 reg
|= I365_PWR_AUTO
; /* automatic power mngmnt */
516 if (state
->flags
& SS_OUTPUT_ENA
) {
517 printk("Power Enabled \n");
518 reg
|= I365_PWR_OUT
; /* enable power */
521 switch (state
->Vcc
) {
525 printk("setting voltage to Vcc to 5V on socket %i\n",sock
);
529 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state
->Vcc
);
530 leave("i82092aa_set_socket");
535 switch (state
->Vpp
) {
537 printk("not setting Vpp on socket %i\n",sock
);
540 printk("setting Vpp to 5.0 for socket %i\n",sock
);
541 reg
|= I365_VPP1_5V
| I365_VPP2_5V
;
544 printk("setting Vpp to 12.0\n");
545 reg
|= I365_VPP1_12V
| I365_VPP2_12V
;
548 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state
->Vcc
);
549 leave("i82092aa_set_socket");
553 if (reg
!= indirect_read(sock
,I365_POWER
)) /* only write if changed */
554 indirect_write(sock
,I365_POWER
,reg
);
556 /* Enable specific interrupt events */
559 if (state
->csc_mask
& SS_DETECT
) {
560 reg
|= I365_CSC_DETECT
;
562 if (state
->flags
& SS_IOCARD
) {
563 if (state
->csc_mask
& SS_STSCHG
)
564 reg
|= I365_CSC_STSCHG
;
566 if (state
->csc_mask
& SS_BATDEAD
)
567 reg
|= I365_CSC_BVD1
;
568 if (state
->csc_mask
& SS_BATWARN
)
569 reg
|= I365_CSC_BVD2
;
570 if (state
->csc_mask
& SS_READY
)
571 reg
|= I365_CSC_READY
;
575 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
577 indirect_write(sock
,I365_CSCINT
,reg
);
578 (void)indirect_read(sock
,I365_CSC
);
580 leave("i82092aa_set_socket");
584 static int i82092aa_set_io_map(struct pcmcia_socket
*socket
, struct pccard_io_map
*io
)
586 unsigned int sock
= container_of(socket
, struct socket_info
, socket
)->number
;
587 unsigned char map
, ioctl
;
589 enter("i82092aa_set_io_map");
593 /* Check error conditions */
595 leave("i82092aa_set_io_map with invalid map");
598 if ((io
->start
> 0xffff) || (io
->stop
> 0xffff) || (io
->stop
< io
->start
)){
599 leave("i82092aa_set_io_map with invalid io");
603 /* Turn off the window before changing anything */
604 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_IO(map
))
605 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_IO(map
));
607 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
609 /* write the new values */
610 indirect_write16(sock
,I365_IO(map
)+I365_W_START
,io
->start
);
611 indirect_write16(sock
,I365_IO(map
)+I365_W_STOP
,io
->stop
);
613 ioctl
= indirect_read(sock
,I365_IOCTL
) & ~I365_IOCTL_MASK(map
);
615 if (io
->flags
& (MAP_16BIT
|MAP_AUTOSZ
))
616 ioctl
|= I365_IOCTL_16BIT(map
);
618 indirect_write(sock
,I365_IOCTL
,ioctl
);
620 /* Turn the window back on if needed */
621 if (io
->flags
& MAP_ACTIVE
)
622 indirect_setbit(sock
,I365_ADDRWIN
,I365_ENA_IO(map
));
624 leave("i82092aa_set_io_map");
628 static int i82092aa_set_mem_map(struct pcmcia_socket
*socket
, struct pccard_mem_map
*mem
)
630 struct socket_info
*sock_info
= container_of(socket
, struct socket_info
, socket
);
631 unsigned int sock
= sock_info
->number
;
632 struct pci_bus_region region
;
633 unsigned short base
, i
;
636 enter("i82092aa_set_mem_map");
638 pcibios_resource_to_bus(sock_info
->dev
, ®ion
, mem
->res
);
642 leave("i82092aa_set_mem_map: invalid map");
647 if ( (mem
->card_start
> 0x3ffffff) || (region
.start
> region
.end
) ||
648 (mem
->speed
> 1000) ) {
649 leave("i82092aa_set_mem_map: invalid address / speed");
650 printk("invalid mem map for socket %i : %lx to %lx with a start of %x \n",sock
,region
.start
, region
.end
, mem
->card_start
);
654 /* Turn off the window before changing anything */
655 if (indirect_read(sock
, I365_ADDRWIN
) & I365_ENA_MEM(map
))
656 indirect_resetbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
659 /* 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); */
661 /* write the start address */
662 base
= I365_MEM(map
);
663 i
= (region
.start
>> 12) & 0x0fff;
664 if (mem
->flags
& MAP_16BIT
)
666 if (mem
->flags
& MAP_0WS
)
668 indirect_write16(sock
,base
+I365_W_START
,i
);
670 /* write the stop address */
672 i
= (region
.end
>> 12) & 0x0fff;
673 switch (to_cycles(mem
->speed
)) {
683 i
|= I365_MEM_WS1
| I365_MEM_WS0
;
687 indirect_write16(sock
,base
+I365_W_STOP
,i
);
691 i
= ((mem
->card_start
- region
.start
) >> 12) & 0x3fff;
692 if (mem
->flags
& MAP_WRPROT
)
693 i
|= I365_MEM_WRPROT
;
694 if (mem
->flags
& MAP_ATTRIB
) {
695 /* printk("requesting attribute memory for socket %i\n",sock);*/
698 /* printk("requesting normal memory for socket %i\n",sock);*/
700 indirect_write16(sock
,base
+I365_W_OFF
,i
);
702 /* Enable the window if necessary */
703 if (mem
->flags
& MAP_ACTIVE
)
704 indirect_setbit(sock
, I365_ADDRWIN
, I365_ENA_MEM(map
));
706 leave("i82092aa_set_mem_map");
710 static int i82092aa_module_init(void)
712 return pci_register_driver(&i82092aa_pci_drv
);
715 static void i82092aa_module_exit(void)
717 enter("i82092aa_module_exit");
718 pci_unregister_driver(&i82092aa_pci_drv
);
719 if (sockets
[0].io_base
>0)
720 release_region(sockets
[0].io_base
, 2);
721 leave("i82092aa_module_exit");
724 module_init(i82092aa_module_init
);
725 module_exit(i82092aa_module_exit
);