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);