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);