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 const struct pci_device_id 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 = 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 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 for (i = 0; i<socket_count; i++) {
137 sockets[i].socket.dev.parent = &dev->dev;
138 sockets[i].socket.ops = &i82092aa_operations;
139 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
140 ret = pcmcia_register_socket(&sockets[i].socket);
142 goto err_out_free_sockets;
146 leave("i82092aa_pci_probe");
149 err_out_free_sockets:
152 pcmcia_unregister_socket(&sockets[i].socket);
155 free_irq(dev->irq, i82092aa_interrupt);
157 release_region(pci_resource_start(dev, 0), 2);
159 pci_disable_device(dev);
163 static void i82092aa_pci_remove(struct pci_dev *dev)
167 enter("i82092aa_pci_remove");
169 free_irq(dev->irq, i82092aa_interrupt);
171 for (i = 0; i < socket_count; i++)
172 pcmcia_unregister_socket(&sockets[i].socket);
174 leave("i82092aa_pci_remove");
177 static DEFINE_SPINLOCK(port_lock);
179 /* basic value read/write functions */
181 static unsigned char indirect_read(int socket, unsigned short reg)
183 unsigned short int port;
186 spin_lock_irqsave(&port_lock,flags);
187 reg += socket * 0x40;
188 port = sockets[socket].io_base;
191 spin_unlock_irqrestore(&port_lock,flags);
196 static unsigned short indirect_read16(int socket, unsigned short reg)
198 unsigned short int port;
201 spin_lock_irqsave(&port_lock,flags);
202 reg = reg + socket * 0x40;
203 port = sockets[socket].io_base;
208 tmp = tmp | (inb(port+1)<<8);
209 spin_unlock_irqrestore(&port_lock,flags);
214 static void indirect_write(int socket, unsigned short reg, unsigned char value)
216 unsigned short int port;
218 spin_lock_irqsave(&port_lock,flags);
219 reg = reg + socket * 0x40;
220 port = sockets[socket].io_base;
223 spin_unlock_irqrestore(&port_lock,flags);
226 static void indirect_setbit(int socket, unsigned short reg, unsigned char mask)
228 unsigned short int port;
231 spin_lock_irqsave(&port_lock,flags);
232 reg = reg + socket * 0x40;
233 port = sockets[socket].io_base;
239 spin_unlock_irqrestore(&port_lock,flags);
243 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
245 unsigned short int port;
248 spin_lock_irqsave(&port_lock,flags);
249 reg = reg + socket * 0x40;
250 port = sockets[socket].io_base;
256 spin_unlock_irqrestore(&port_lock,flags);
259 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
261 unsigned short int port;
264 spin_lock_irqsave(&port_lock,flags);
265 reg = reg + socket * 0x40;
266 port = sockets[socket].io_base;
277 spin_unlock_irqrestore(&port_lock,flags);
280 /* simple helper functions */
281 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
282 static int cycle_time = 120;
284 static int to_cycles(int ns)
287 return ns/cycle_time;
293 /* Interrupt handler functionality */
295 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
301 unsigned int events, active=0;
303 /* enter("i82092aa_interrupt");*/
308 printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
314 for (i=0;i<socket_count;i++) {
316 if (sockets[i].card_state==0) /* Inactive socket, should not happen */
319 csc = indirect_read(i,I365_CSC); /* card status change register */
321 if (csc==0) /* no events on this socket */
326 if (csc & I365_CSC_DETECT) {
328 printk("Card detected in socket %i!\n",i);
331 if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) {
332 /* For IO/CARDS, bit 0 means "read the card" */
333 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
335 /* Check for battery/ready events */
336 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
337 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
338 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
342 pcmcia_parse_events(&sockets[i].socket, events);
347 if (active==0) /* no more events to handle */
351 return IRQ_RETVAL(handled);
352 /* leave("i82092aa_interrupt");*/
357 /* socket functions */
359 static int card_present(int socketno)
362 enter("card_present");
364 if ((socketno<0) || (socketno >= MAX_SOCKETS))
366 if (sockets[socketno].io_base == 0)
370 val = indirect_read(socketno, 1); /* Interface status register */
372 leave("card_present 1");
376 leave("card_present 0");
380 static void set_bridge_state(int sock)
382 enter("set_bridge_state");
383 indirect_write(sock, I365_GBLCTL,0x00);
384 indirect_write(sock, I365_GENCTL,0x00);
386 indirect_setbit(sock, I365_INTCTL,0x08);
387 leave("set_bridge_state");
395 static int i82092aa_init(struct pcmcia_socket *sock)
398 struct resource res = { .start = 0, .end = 0x0fff };
399 pccard_io_map io = { 0, 0, 0, 0, 1 };
400 pccard_mem_map mem = { .res = &res, };
402 enter("i82092aa_init");
404 for (i = 0; i < 2; i++) {
406 i82092aa_set_io_map(sock, &io);
408 for (i = 0; i < 5; i++) {
410 i82092aa_set_mem_map(sock, &mem);
413 leave("i82092aa_init");
417 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
419 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
422 enter("i82092aa_get_status");
424 status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
427 if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
431 /* IO cards have a different meaning of bits 0,1 */
432 /* Also notice the inverse-logic on the bits */
433 if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
435 if (!(status & I365_CS_STSCHG))
437 } else { /* non I/O card */
438 if (!(status & I365_CS_BVD1))
439 *value |= SS_BATDEAD;
440 if (!(status & I365_CS_BVD2))
441 *value |= SS_BATWARN;
445 if (status & I365_CS_WRPROT)
446 (*value) |= SS_WRPROT; /* card is write protected */
448 if (status & I365_CS_READY)
449 (*value) |= SS_READY; /* card is not busy */
451 if (status & I365_CS_POWERON)
452 (*value) |= SS_POWERON; /* power is applied to the card */
455 leave("i82092aa_get_status");
460 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
462 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
465 enter("i82092aa_set_socket");
467 /* First, set the global controller options */
469 set_bridge_state(sock);
471 /* Values for the IGENC register */
474 if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */
475 reg = reg | I365_PC_RESET;
476 if (state->flags & SS_IOCARD)
477 reg = reg | I365_PC_IOCARD;
479 indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
481 /* Power registers */
483 reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
485 if (state->flags & SS_PWR_AUTO) {
486 printk("Auto power\n");
487 reg |= I365_PWR_AUTO; /* automatic power mngmnt */
489 if (state->flags & SS_OUTPUT_ENA) {
490 printk("Power Enabled \n");
491 reg |= I365_PWR_OUT; /* enable power */
494 switch (state->Vcc) {
498 printk("setting voltage to Vcc to 5V on socket %i\n",sock);
502 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
503 leave("i82092aa_set_socket");
508 switch (state->Vpp) {
510 printk("not setting Vpp on socket %i\n",sock);
513 printk("setting Vpp to 5.0 for socket %i\n",sock);
514 reg |= I365_VPP1_5V | I365_VPP2_5V;
517 printk("setting Vpp to 12.0\n");
518 reg |= I365_VPP1_12V | I365_VPP2_12V;
521 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
522 leave("i82092aa_set_socket");
526 if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
527 indirect_write(sock,I365_POWER,reg);
529 /* Enable specific interrupt events */
532 if (state->csc_mask & SS_DETECT) {
533 reg |= I365_CSC_DETECT;
535 if (state->flags & SS_IOCARD) {
536 if (state->csc_mask & SS_STSCHG)
537 reg |= I365_CSC_STSCHG;
539 if (state->csc_mask & SS_BATDEAD)
540 reg |= I365_CSC_BVD1;
541 if (state->csc_mask & SS_BATWARN)
542 reg |= I365_CSC_BVD2;
543 if (state->csc_mask & SS_READY)
544 reg |= I365_CSC_READY;
548 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
550 indirect_write(sock,I365_CSCINT,reg);
551 (void)indirect_read(sock,I365_CSC);
553 leave("i82092aa_set_socket");
557 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
559 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
560 unsigned char map, ioctl;
562 enter("i82092aa_set_io_map");
566 /* Check error conditions */
568 leave("i82092aa_set_io_map with invalid map");
571 if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
572 leave("i82092aa_set_io_map with invalid io");
576 /* Turn off the window before changing anything */
577 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
578 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
580 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
582 /* write the new values */
583 indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
584 indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
586 ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
588 if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
589 ioctl |= I365_IOCTL_16BIT(map);
591 indirect_write(sock,I365_IOCTL,ioctl);
593 /* Turn the window back on if needed */
594 if (io->flags & MAP_ACTIVE)
595 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
597 leave("i82092aa_set_io_map");
601 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
603 struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
604 unsigned int sock = sock_info->number;
605 struct pci_bus_region region;
606 unsigned short base, i;
609 enter("i82092aa_set_mem_map");
611 pcibios_resource_to_bus(sock_info->dev->bus, ®ion, mem->res);
615 leave("i82092aa_set_mem_map: invalid map");
620 if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
621 (mem->speed > 1000) ) {
622 leave("i82092aa_set_mem_map: invalid address / speed");
623 printk("invalid mem map for socket %i: %llx to %llx with a "
626 (unsigned long long)region.start,
627 (unsigned long long)region.end,
632 /* Turn off the window before changing anything */
633 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
634 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
637 /* 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); */
639 /* write the start address */
640 base = I365_MEM(map);
641 i = (region.start >> 12) & 0x0fff;
642 if (mem->flags & MAP_16BIT)
644 if (mem->flags & MAP_0WS)
646 indirect_write16(sock,base+I365_W_START,i);
648 /* write the stop address */
650 i= (region.end >> 12) & 0x0fff;
651 switch (to_cycles(mem->speed)) {
661 i |= I365_MEM_WS1 | I365_MEM_WS0;
665 indirect_write16(sock,base+I365_W_STOP,i);
669 i = ((mem->card_start - region.start) >> 12) & 0x3fff;
670 if (mem->flags & MAP_WRPROT)
671 i |= I365_MEM_WRPROT;
672 if (mem->flags & MAP_ATTRIB) {
673 /* printk("requesting attribute memory for socket %i\n",sock);*/
676 /* printk("requesting normal memory for socket %i\n",sock);*/
678 indirect_write16(sock,base+I365_W_OFF,i);
680 /* Enable the window if necessary */
681 if (mem->flags & MAP_ACTIVE)
682 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
684 leave("i82092aa_set_mem_map");
688 static int i82092aa_module_init(void)
690 return pci_register_driver(&i82092aa_pci_driver);
693 static void i82092aa_module_exit(void)
695 enter("i82092aa_module_exit");
696 pci_unregister_driver(&i82092aa_pci_driver);
697 if (sockets[0].io_base>0)
698 release_region(sockets[0].io_base, 2);
699 leave("i82092aa_module_exit");
702 module_init(i82092aa_module_init);
703 module_exit(i82092aa_module_exit);