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/cs_types.h>
19 #include <pcmcia/ss.h>
20 #include <pcmcia/cs.h>
22 #include <asm/system.h>
28 MODULE_LICENSE("GPL");
30 /* PCI core routines */
31 static struct pci_device_id i82092aa_pci_ids[] = {
33 .vendor = PCI_VENDOR_ID_INTEL,
34 .device = PCI_DEVICE_ID_INTEL_82092AA_0,
35 .subvendor = PCI_ANY_ID,
36 .subdevice = PCI_ANY_ID,
40 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
43 static int i82092aa_socket_suspend (struct pci_dev *dev, pm_message_t state)
45 return pcmcia_socket_dev_suspend(&dev->dev, state);
48 static int i82092aa_socket_resume (struct pci_dev *dev)
50 return pcmcia_socket_dev_resume(&dev->dev);
54 static struct pci_driver i82092aa_pci_driver = {
56 .id_table = i82092aa_pci_ids,
57 .probe = i82092aa_pci_probe,
58 .remove = __devexit_p(i82092aa_pci_remove),
60 .suspend = i82092aa_socket_suspend,
61 .resume = i82092aa_socket_resume,
66 /* the pccard structure and its functions */
67 static struct pccard_operations i82092aa_operations = {
68 .init = i82092aa_init,
69 .get_status = i82092aa_get_status,
70 .set_socket = i82092aa_set_socket,
71 .set_io_map = i82092aa_set_io_map,
72 .set_mem_map = i82092aa_set_mem_map,
75 /* The card can do upto 4 sockets, allocate a structure for each of them */
79 int card_state; /* 0 = no socket,
81 2 = card but not initialized,
82 3 = operational card */
83 unsigned int io_base; /* base io address of the socket */
85 struct pcmcia_socket socket;
86 struct pci_dev *dev; /* The PCI device for the socket */
90 static struct socket_info sockets[MAX_SOCKETS];
91 static int socket_count; /* shortcut */
94 static int __devinit i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
96 unsigned char configbyte;
99 enter("i82092aa_pci_probe");
101 if ((ret = pci_enable_device(dev)))
104 pci_read_config_byte(dev, 0x40, &configbyte); /* PCI Configuration Control */
105 switch(configbyte&6) {
118 printk(KERN_ERR "i82092aa: Oops, you did something we didn't think of.\n");
120 goto err_out_disable;
122 printk(KERN_INFO "i82092aa: configured as a %d socket device.\n", socket_count);
124 if (!request_region(pci_resource_start(dev, 0), 2, "i82092aa")) {
126 goto err_out_disable;
129 for (i = 0;i<socket_count;i++) {
130 sockets[i].card_state = 1; /* 1 = present but empty */
131 sockets[i].io_base = pci_resource_start(dev, 0);
132 sockets[i].socket.features |= SS_CAP_PCCARD;
133 sockets[i].socket.map_size = 0x1000;
134 sockets[i].socket.irq_mask = 0;
135 sockets[i].socket.pci_irq = dev->irq;
136 sockets[i].socket.owner = THIS_MODULE;
138 sockets[i].number = i;
140 if (card_present(i)) {
141 sockets[i].card_state = 3;
142 dprintk(KERN_DEBUG "i82092aa: slot %i is occupied\n",i);
144 dprintk(KERN_DEBUG "i82092aa: slot %i is vacant\n",i);
148 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
149 configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
150 pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */
152 /* Register the interrupt handler */
153 dprintk(KERN_DEBUG "Requesting interrupt %i \n",dev->irq);
154 if ((ret = request_irq(dev->irq, i82092aa_interrupt, IRQF_SHARED, "i82092aa", i82092aa_interrupt))) {
155 printk(KERN_ERR "i82092aa: Failed to register IRQ %d, aborting\n", dev->irq);
156 goto err_out_free_res;
159 pci_set_drvdata(dev, &sockets[i].socket);
161 for (i = 0; i<socket_count; i++) {
162 sockets[i].socket.dev.parent = &dev->dev;
163 sockets[i].socket.ops = &i82092aa_operations;
164 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
165 ret = pcmcia_register_socket(&sockets[i].socket);
167 goto err_out_free_sockets;
171 leave("i82092aa_pci_probe");
174 err_out_free_sockets:
177 pcmcia_unregister_socket(&sockets[i].socket);
180 free_irq(dev->irq, i82092aa_interrupt);
182 release_region(pci_resource_start(dev, 0), 2);
184 pci_disable_device(dev);
188 static void __devexit i82092aa_pci_remove(struct pci_dev *dev)
190 struct pcmcia_socket *socket = pci_get_drvdata(dev);
192 enter("i82092aa_pci_remove");
194 free_irq(dev->irq, i82092aa_interrupt);
197 pcmcia_unregister_socket(socket);
199 leave("i82092aa_pci_remove");
202 static DEFINE_SPINLOCK(port_lock);
204 /* basic value read/write functions */
206 static unsigned char indirect_read(int socket, unsigned short reg)
208 unsigned short int port;
211 spin_lock_irqsave(&port_lock,flags);
212 reg += socket * 0x40;
213 port = sockets[socket].io_base;
216 spin_unlock_irqrestore(&port_lock,flags);
221 static unsigned short indirect_read16(int socket, unsigned short reg)
223 unsigned short int port;
226 spin_lock_irqsave(&port_lock,flags);
227 reg = reg + socket * 0x40;
228 port = sockets[socket].io_base;
233 tmp = tmp | (inb(port+1)<<8);
234 spin_unlock_irqrestore(&port_lock,flags);
239 static void indirect_write(int socket, unsigned short reg, unsigned char value)
241 unsigned short int port;
243 spin_lock_irqsave(&port_lock,flags);
244 reg = reg + socket * 0x40;
245 port = sockets[socket].io_base;
248 spin_unlock_irqrestore(&port_lock,flags);
251 static void indirect_setbit(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);
268 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
270 unsigned short int port;
273 spin_lock_irqsave(&port_lock,flags);
274 reg = reg + socket * 0x40;
275 port = sockets[socket].io_base;
281 spin_unlock_irqrestore(&port_lock,flags);
284 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
286 unsigned short int port;
289 spin_lock_irqsave(&port_lock,flags);
290 reg = reg + socket * 0x40;
291 port = sockets[socket].io_base;
302 spin_unlock_irqrestore(&port_lock,flags);
305 /* simple helper functions */
306 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
307 static int cycle_time = 120;
309 static int to_cycles(int ns)
312 return ns/cycle_time;
318 /* Interrupt handler functionality */
320 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
326 unsigned int events, active=0;
328 /* enter("i82092aa_interrupt");*/
333 printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
339 for (i=0;i<socket_count;i++) {
341 if (sockets[i].card_state==0) /* Inactive socket, should not happen */
344 csc = indirect_read(i,I365_CSC); /* card status change register */
346 if (csc==0) /* no events on this socket */
351 if (csc & I365_CSC_DETECT) {
353 printk("Card detected in socket %i!\n",i);
356 if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) {
357 /* For IO/CARDS, bit 0 means "read the card" */
358 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
360 /* Check for battery/ready events */
361 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
362 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
363 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
367 pcmcia_parse_events(&sockets[i].socket, events);
372 if (active==0) /* no more events to handle */
376 return IRQ_RETVAL(handled);
377 /* leave("i82092aa_interrupt");*/
382 /* socket functions */
384 static int card_present(int socketno)
387 enter("card_present");
389 if ((socketno<0) || (socketno >= MAX_SOCKETS))
391 if (sockets[socketno].io_base == 0)
395 val = indirect_read(socketno, 1); /* Interface status register */
397 leave("card_present 1");
401 leave("card_present 0");
405 static void set_bridge_state(int sock)
407 enter("set_bridge_state");
408 indirect_write(sock, I365_GBLCTL,0x00);
409 indirect_write(sock, I365_GENCTL,0x00);
411 indirect_setbit(sock, I365_INTCTL,0x08);
412 leave("set_bridge_state");
420 static int i82092aa_init(struct pcmcia_socket *sock)
423 struct resource res = { .start = 0, .end = 0x0fff };
424 pccard_io_map io = { 0, 0, 0, 0, 1 };
425 pccard_mem_map mem = { .res = &res, };
427 enter("i82092aa_init");
429 for (i = 0; i < 2; i++) {
431 i82092aa_set_io_map(sock, &io);
433 for (i = 0; i < 5; i++) {
435 i82092aa_set_mem_map(sock, &mem);
438 leave("i82092aa_init");
442 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
444 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
447 enter("i82092aa_get_status");
449 status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
452 if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
456 /* IO cards have a different meaning of bits 0,1 */
457 /* Also notice the inverse-logic on the bits */
458 if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
460 if (!(status & I365_CS_STSCHG))
462 } else { /* non I/O card */
463 if (!(status & I365_CS_BVD1))
464 *value |= SS_BATDEAD;
465 if (!(status & I365_CS_BVD2))
466 *value |= SS_BATWARN;
470 if (status & I365_CS_WRPROT)
471 (*value) |= SS_WRPROT; /* card is write protected */
473 if (status & I365_CS_READY)
474 (*value) |= SS_READY; /* card is not busy */
476 if (status & I365_CS_POWERON)
477 (*value) |= SS_POWERON; /* power is applied to the card */
480 leave("i82092aa_get_status");
485 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
487 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
490 enter("i82092aa_set_socket");
492 /* First, set the global controller options */
494 set_bridge_state(sock);
496 /* Values for the IGENC register */
499 if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */
500 reg = reg | I365_PC_RESET;
501 if (state->flags & SS_IOCARD)
502 reg = reg | I365_PC_IOCARD;
504 indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
506 /* Power registers */
508 reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
510 if (state->flags & SS_PWR_AUTO) {
511 printk("Auto power\n");
512 reg |= I365_PWR_AUTO; /* automatic power mngmnt */
514 if (state->flags & SS_OUTPUT_ENA) {
515 printk("Power Enabled \n");
516 reg |= I365_PWR_OUT; /* enable power */
519 switch (state->Vcc) {
523 printk("setting voltage to Vcc to 5V on socket %i\n",sock);
527 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
528 leave("i82092aa_set_socket");
533 switch (state->Vpp) {
535 printk("not setting Vpp on socket %i\n",sock);
538 printk("setting Vpp to 5.0 for socket %i\n",sock);
539 reg |= I365_VPP1_5V | I365_VPP2_5V;
542 printk("setting Vpp to 12.0\n");
543 reg |= I365_VPP1_12V | I365_VPP2_12V;
546 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
547 leave("i82092aa_set_socket");
551 if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
552 indirect_write(sock,I365_POWER,reg);
554 /* Enable specific interrupt events */
557 if (state->csc_mask & SS_DETECT) {
558 reg |= I365_CSC_DETECT;
560 if (state->flags & SS_IOCARD) {
561 if (state->csc_mask & SS_STSCHG)
562 reg |= I365_CSC_STSCHG;
564 if (state->csc_mask & SS_BATDEAD)
565 reg |= I365_CSC_BVD1;
566 if (state->csc_mask & SS_BATWARN)
567 reg |= I365_CSC_BVD2;
568 if (state->csc_mask & SS_READY)
569 reg |= I365_CSC_READY;
573 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
575 indirect_write(sock,I365_CSCINT,reg);
576 (void)indirect_read(sock,I365_CSC);
578 leave("i82092aa_set_socket");
582 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
584 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
585 unsigned char map, ioctl;
587 enter("i82092aa_set_io_map");
591 /* Check error conditions */
593 leave("i82092aa_set_io_map with invalid map");
596 if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
597 leave("i82092aa_set_io_map with invalid io");
601 /* Turn off the window before changing anything */
602 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
603 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
605 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
607 /* write the new values */
608 indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
609 indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
611 ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
613 if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
614 ioctl |= I365_IOCTL_16BIT(map);
616 indirect_write(sock,I365_IOCTL,ioctl);
618 /* Turn the window back on if needed */
619 if (io->flags & MAP_ACTIVE)
620 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
622 leave("i82092aa_set_io_map");
626 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
628 struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
629 unsigned int sock = sock_info->number;
630 struct pci_bus_region region;
631 unsigned short base, i;
634 enter("i82092aa_set_mem_map");
636 pcibios_resource_to_bus(sock_info->dev, ®ion, mem->res);
640 leave("i82092aa_set_mem_map: invalid map");
645 if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
646 (mem->speed > 1000) ) {
647 leave("i82092aa_set_mem_map: invalid address / speed");
648 printk("invalid mem map for socket %i: %llx to %llx with a "
651 (unsigned long long)region.start,
652 (unsigned long long)region.end,
657 /* Turn off the window before changing anything */
658 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
659 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
662 /* 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); */
664 /* write the start address */
665 base = I365_MEM(map);
666 i = (region.start >> 12) & 0x0fff;
667 if (mem->flags & MAP_16BIT)
669 if (mem->flags & MAP_0WS)
671 indirect_write16(sock,base+I365_W_START,i);
673 /* write the stop address */
675 i= (region.end >> 12) & 0x0fff;
676 switch (to_cycles(mem->speed)) {
686 i |= I365_MEM_WS1 | I365_MEM_WS0;
690 indirect_write16(sock,base+I365_W_STOP,i);
694 i = ((mem->card_start - region.start) >> 12) & 0x3fff;
695 if (mem->flags & MAP_WRPROT)
696 i |= I365_MEM_WRPROT;
697 if (mem->flags & MAP_ATTRIB) {
698 /* printk("requesting attribute memory for socket %i\n",sock);*/
701 /* printk("requesting normal memory for socket %i\n",sock);*/
703 indirect_write16(sock,base+I365_W_OFF,i);
705 /* Enable the window if necessary */
706 if (mem->flags & MAP_ACTIVE)
707 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
709 leave("i82092aa_set_mem_map");
713 static int i82092aa_module_init(void)
715 return pci_register_driver(&i82092aa_pci_driver);
718 static void i82092aa_module_exit(void)
720 enter("i82092aa_module_exit");
721 pci_unregister_driver(&i82092aa_pci_driver);
722 if (sockets[0].io_base>0)
723 release_region(sockets[0].io_base, 2);
724 leave("i82092aa_module_exit");
727 module_init(i82092aa_module_init);
728 module_exit(i82092aa_module_exit);