2 * Driver for Intel I82092AA PCI-PCMCIA bridge.
4 * (C) 2001 Red Hat, Inc.
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>
20 #include <asm/system.h>
26 MODULE_LICENSE("GPL");
28 /* PCI core routines */
29 static struct pci_device_id i82092aa_pci_ids[] = {
31 .vendor = PCI_VENDOR_ID_INTEL,
32 .device = PCI_DEVICE_ID_INTEL_82092AA_0,
33 .subvendor = PCI_ANY_ID,
34 .subdevice = PCI_ANY_ID,
38 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
40 static struct pci_driver i82092aa_pci_driver = {
42 .id_table = i82092aa_pci_ids,
43 .probe = i82092aa_pci_probe,
44 .remove = __devexit_p(i82092aa_pci_remove),
48 /* the pccard structure and its functions */
49 static struct pccard_operations i82092aa_operations = {
50 .init = i82092aa_init,
51 .get_status = i82092aa_get_status,
52 .set_socket = i82092aa_set_socket,
53 .set_io_map = i82092aa_set_io_map,
54 .set_mem_map = i82092aa_set_mem_map,
57 /* The card can do upto 4 sockets, allocate a structure for each of them */
61 int card_state; /* 0 = no socket,
63 2 = card but not initialized,
64 3 = operational card */
65 unsigned int io_base; /* base io address of the socket */
67 struct pcmcia_socket socket;
68 struct pci_dev *dev; /* The PCI device for the socket */
72 static struct socket_info sockets[MAX_SOCKETS];
73 static int socket_count; /* shortcut */
76 static int __devinit i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
78 unsigned char configbyte;
81 enter("i82092aa_pci_probe");
83 if ((ret = pci_enable_device(dev)))
86 pci_read_config_byte(dev, 0x40, &configbyte); /* PCI Configuration Control */
87 switch(configbyte&6) {
100 printk(KERN_ERR "i82092aa: Oops, you did something we didn't think of.\n");
102 goto err_out_disable;
104 printk(KERN_INFO "i82092aa: configured as a %d socket device.\n", socket_count);
106 if (!request_region(pci_resource_start(dev, 0), 2, "i82092aa")) {
108 goto err_out_disable;
111 for (i = 0;i<socket_count;i++) {
112 sockets[i].card_state = 1; /* 1 = present but empty */
113 sockets[i].io_base = pci_resource_start(dev, 0);
114 sockets[i].socket.features |= SS_CAP_PCCARD;
115 sockets[i].socket.map_size = 0x1000;
116 sockets[i].socket.irq_mask = 0;
117 sockets[i].socket.pci_irq = dev->irq;
118 sockets[i].socket.cb_dev = dev;
119 sockets[i].socket.owner = THIS_MODULE;
121 sockets[i].number = i;
123 if (card_present(i)) {
124 sockets[i].card_state = 3;
125 dprintk(KERN_DEBUG "i82092aa: slot %i is occupied\n",i);
127 dprintk(KERN_DEBUG "i82092aa: slot %i is vacant\n",i);
131 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
132 configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
133 pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */
135 /* Register the interrupt handler */
136 dprintk(KERN_DEBUG "Requesting interrupt %i \n",dev->irq);
137 if ((ret = request_irq(dev->irq, i82092aa_interrupt, IRQF_SHARED, "i82092aa", i82092aa_interrupt))) {
138 printk(KERN_ERR "i82092aa: Failed to register IRQ %d, aborting\n", dev->irq);
139 goto err_out_free_res;
142 pci_set_drvdata(dev, &sockets[i].socket);
144 for (i = 0; i<socket_count; i++) {
145 sockets[i].socket.dev.parent = &dev->dev;
146 sockets[i].socket.ops = &i82092aa_operations;
147 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
148 ret = pcmcia_register_socket(&sockets[i].socket);
150 goto err_out_free_sockets;
154 leave("i82092aa_pci_probe");
157 err_out_free_sockets:
160 pcmcia_unregister_socket(&sockets[i].socket);
163 free_irq(dev->irq, i82092aa_interrupt);
165 release_region(pci_resource_start(dev, 0), 2);
167 pci_disable_device(dev);
171 static void __devexit i82092aa_pci_remove(struct pci_dev *dev)
173 struct pcmcia_socket *socket = pci_get_drvdata(dev);
175 enter("i82092aa_pci_remove");
177 free_irq(dev->irq, i82092aa_interrupt);
180 pcmcia_unregister_socket(socket);
182 leave("i82092aa_pci_remove");
185 static DEFINE_SPINLOCK(port_lock);
187 /* basic value read/write functions */
189 static unsigned char indirect_read(int socket, unsigned short reg)
191 unsigned short int port;
194 spin_lock_irqsave(&port_lock,flags);
195 reg += socket * 0x40;
196 port = sockets[socket].io_base;
199 spin_unlock_irqrestore(&port_lock,flags);
204 static unsigned short indirect_read16(int socket, unsigned short reg)
206 unsigned short int port;
209 spin_lock_irqsave(&port_lock,flags);
210 reg = reg + socket * 0x40;
211 port = sockets[socket].io_base;
216 tmp = tmp | (inb(port+1)<<8);
217 spin_unlock_irqrestore(&port_lock,flags);
222 static void indirect_write(int socket, unsigned short reg, unsigned char value)
224 unsigned short int port;
226 spin_lock_irqsave(&port_lock,flags);
227 reg = reg + socket * 0x40;
228 port = sockets[socket].io_base;
231 spin_unlock_irqrestore(&port_lock,flags);
234 static void indirect_setbit(int socket, unsigned short reg, unsigned char mask)
236 unsigned short int port;
239 spin_lock_irqsave(&port_lock,flags);
240 reg = reg + socket * 0x40;
241 port = sockets[socket].io_base;
247 spin_unlock_irqrestore(&port_lock,flags);
251 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
253 unsigned short int port;
256 spin_lock_irqsave(&port_lock,flags);
257 reg = reg + socket * 0x40;
258 port = sockets[socket].io_base;
264 spin_unlock_irqrestore(&port_lock,flags);
267 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
269 unsigned short int port;
272 spin_lock_irqsave(&port_lock,flags);
273 reg = reg + socket * 0x40;
274 port = sockets[socket].io_base;
285 spin_unlock_irqrestore(&port_lock,flags);
288 /* simple helper functions */
289 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
290 static int cycle_time = 120;
292 static int to_cycles(int ns)
295 return ns/cycle_time;
301 /* Interrupt handler functionality */
303 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
309 unsigned int events, active=0;
311 /* enter("i82092aa_interrupt");*/
316 printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
322 for (i=0;i<socket_count;i++) {
324 if (sockets[i].card_state==0) /* Inactive socket, should not happen */
327 csc = indirect_read(i,I365_CSC); /* card status change register */
329 if (csc==0) /* no events on this socket */
334 if (csc & I365_CSC_DETECT) {
336 printk("Card detected in socket %i!\n",i);
339 if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) {
340 /* For IO/CARDS, bit 0 means "read the card" */
341 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
343 /* Check for battery/ready events */
344 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
345 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
346 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
350 pcmcia_parse_events(&sockets[i].socket, events);
355 if (active==0) /* no more events to handle */
359 return IRQ_RETVAL(handled);
360 /* leave("i82092aa_interrupt");*/
365 /* socket functions */
367 static int card_present(int socketno)
370 enter("card_present");
372 if ((socketno<0) || (socketno >= MAX_SOCKETS))
374 if (sockets[socketno].io_base == 0)
378 val = indirect_read(socketno, 1); /* Interface status register */
380 leave("card_present 1");
384 leave("card_present 0");
388 static void set_bridge_state(int sock)
390 enter("set_bridge_state");
391 indirect_write(sock, I365_GBLCTL,0x00);
392 indirect_write(sock, I365_GENCTL,0x00);
394 indirect_setbit(sock, I365_INTCTL,0x08);
395 leave("set_bridge_state");
403 static int i82092aa_init(struct pcmcia_socket *sock)
406 struct resource res = { .start = 0, .end = 0x0fff };
407 pccard_io_map io = { 0, 0, 0, 0, 1 };
408 pccard_mem_map mem = { .res = &res, };
410 enter("i82092aa_init");
412 for (i = 0; i < 2; i++) {
414 i82092aa_set_io_map(sock, &io);
416 for (i = 0; i < 5; i++) {
418 i82092aa_set_mem_map(sock, &mem);
421 leave("i82092aa_init");
425 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
427 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
430 enter("i82092aa_get_status");
432 status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
435 if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
439 /* IO cards have a different meaning of bits 0,1 */
440 /* Also notice the inverse-logic on the bits */
441 if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
443 if (!(status & I365_CS_STSCHG))
445 } else { /* non I/O card */
446 if (!(status & I365_CS_BVD1))
447 *value |= SS_BATDEAD;
448 if (!(status & I365_CS_BVD2))
449 *value |= SS_BATWARN;
453 if (status & I365_CS_WRPROT)
454 (*value) |= SS_WRPROT; /* card is write protected */
456 if (status & I365_CS_READY)
457 (*value) |= SS_READY; /* card is not busy */
459 if (status & I365_CS_POWERON)
460 (*value) |= SS_POWERON; /* power is applied to the card */
463 leave("i82092aa_get_status");
468 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
470 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
473 enter("i82092aa_set_socket");
475 /* First, set the global controller options */
477 set_bridge_state(sock);
479 /* Values for the IGENC register */
482 if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */
483 reg = reg | I365_PC_RESET;
484 if (state->flags & SS_IOCARD)
485 reg = reg | I365_PC_IOCARD;
487 indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
489 /* Power registers */
491 reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
493 if (state->flags & SS_PWR_AUTO) {
494 printk("Auto power\n");
495 reg |= I365_PWR_AUTO; /* automatic power mngmnt */
497 if (state->flags & SS_OUTPUT_ENA) {
498 printk("Power Enabled \n");
499 reg |= I365_PWR_OUT; /* enable power */
502 switch (state->Vcc) {
506 printk("setting voltage to Vcc to 5V on socket %i\n",sock);
510 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
511 leave("i82092aa_set_socket");
516 switch (state->Vpp) {
518 printk("not setting Vpp on socket %i\n",sock);
521 printk("setting Vpp to 5.0 for socket %i\n",sock);
522 reg |= I365_VPP1_5V | I365_VPP2_5V;
525 printk("setting Vpp to 12.0\n");
526 reg |= I365_VPP1_12V | I365_VPP2_12V;
529 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
530 leave("i82092aa_set_socket");
534 if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
535 indirect_write(sock,I365_POWER,reg);
537 /* Enable specific interrupt events */
540 if (state->csc_mask & SS_DETECT) {
541 reg |= I365_CSC_DETECT;
543 if (state->flags & SS_IOCARD) {
544 if (state->csc_mask & SS_STSCHG)
545 reg |= I365_CSC_STSCHG;
547 if (state->csc_mask & SS_BATDEAD)
548 reg |= I365_CSC_BVD1;
549 if (state->csc_mask & SS_BATWARN)
550 reg |= I365_CSC_BVD2;
551 if (state->csc_mask & SS_READY)
552 reg |= I365_CSC_READY;
556 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
558 indirect_write(sock,I365_CSCINT,reg);
559 (void)indirect_read(sock,I365_CSC);
561 leave("i82092aa_set_socket");
565 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
567 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
568 unsigned char map, ioctl;
570 enter("i82092aa_set_io_map");
574 /* Check error conditions */
576 leave("i82092aa_set_io_map with invalid map");
579 if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
580 leave("i82092aa_set_io_map with invalid io");
584 /* Turn off the window before changing anything */
585 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
586 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
588 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
590 /* write the new values */
591 indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
592 indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
594 ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
596 if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
597 ioctl |= I365_IOCTL_16BIT(map);
599 indirect_write(sock,I365_IOCTL,ioctl);
601 /* Turn the window back on if needed */
602 if (io->flags & MAP_ACTIVE)
603 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
605 leave("i82092aa_set_io_map");
609 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
611 struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
612 unsigned int sock = sock_info->number;
613 struct pci_bus_region region;
614 unsigned short base, i;
617 enter("i82092aa_set_mem_map");
619 pcibios_resource_to_bus(sock_info->dev, ®ion, mem->res);
623 leave("i82092aa_set_mem_map: invalid map");
628 if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
629 (mem->speed > 1000) ) {
630 leave("i82092aa_set_mem_map: invalid address / speed");
631 printk("invalid mem map for socket %i: %llx to %llx with a "
634 (unsigned long long)region.start,
635 (unsigned long long)region.end,
640 /* Turn off the window before changing anything */
641 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
642 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
645 /* 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); */
647 /* write the start address */
648 base = I365_MEM(map);
649 i = (region.start >> 12) & 0x0fff;
650 if (mem->flags & MAP_16BIT)
652 if (mem->flags & MAP_0WS)
654 indirect_write16(sock,base+I365_W_START,i);
656 /* write the stop address */
658 i= (region.end >> 12) & 0x0fff;
659 switch (to_cycles(mem->speed)) {
669 i |= I365_MEM_WS1 | I365_MEM_WS0;
673 indirect_write16(sock,base+I365_W_STOP,i);
677 i = ((mem->card_start - region.start) >> 12) & 0x3fff;
678 if (mem->flags & MAP_WRPROT)
679 i |= I365_MEM_WRPROT;
680 if (mem->flags & MAP_ATTRIB) {
681 /* printk("requesting attribute memory for socket %i\n",sock);*/
684 /* printk("requesting normal memory for socket %i\n",sock);*/
686 indirect_write16(sock,base+I365_W_OFF,i);
688 /* Enable the window if necessary */
689 if (mem->flags & MAP_ACTIVE)
690 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
692 leave("i82092aa_set_mem_map");
696 static int i82092aa_module_init(void)
698 return pci_register_driver(&i82092aa_pci_driver);
701 static void i82092aa_module_exit(void)
703 enter("i82092aa_module_exit");
704 pci_unregister_driver(&i82092aa_pci_driver);
705 if (sockets[0].io_base>0)
706 release_region(sockets[0].io_base, 2);
707 leave("i82092aa_module_exit");
710 module_init(i82092aa_module_init);
711 module_exit(i82092aa_module_exit);