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);
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.cb_dev = dev;
137 sockets[i].socket.owner = THIS_MODULE;
139 sockets[i].number = i;
141 if (card_present(i)) {
142 sockets[i].card_state = 3;
143 dprintk(KERN_DEBUG "i82092aa: slot %i is occupied\n",i);
145 dprintk(KERN_DEBUG "i82092aa: slot %i is vacant\n",i);
149 /* Now, specifiy that all interrupts are to be done as PCI interrupts */
150 configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
151 pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */
153 /* Register the interrupt handler */
154 dprintk(KERN_DEBUG "Requesting interrupt %i \n",dev->irq);
155 if ((ret = request_irq(dev->irq, i82092aa_interrupt, IRQF_SHARED, "i82092aa", i82092aa_interrupt))) {
156 printk(KERN_ERR "i82092aa: Failed to register IRQ %d, aborting\n", dev->irq);
157 goto err_out_free_res;
160 pci_set_drvdata(dev, &sockets[i].socket);
162 for (i = 0; i<socket_count; i++) {
163 sockets[i].socket.dev.parent = &dev->dev;
164 sockets[i].socket.ops = &i82092aa_operations;
165 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
166 ret = pcmcia_register_socket(&sockets[i].socket);
168 goto err_out_free_sockets;
172 leave("i82092aa_pci_probe");
175 err_out_free_sockets:
178 pcmcia_unregister_socket(&sockets[i].socket);
181 free_irq(dev->irq, i82092aa_interrupt);
183 release_region(pci_resource_start(dev, 0), 2);
185 pci_disable_device(dev);
189 static void __devexit i82092aa_pci_remove(struct pci_dev *dev)
191 struct pcmcia_socket *socket = pci_get_drvdata(dev);
193 enter("i82092aa_pci_remove");
195 free_irq(dev->irq, i82092aa_interrupt);
198 pcmcia_unregister_socket(socket);
200 leave("i82092aa_pci_remove");
203 static DEFINE_SPINLOCK(port_lock);
205 /* basic value read/write functions */
207 static unsigned char indirect_read(int socket, unsigned short reg)
209 unsigned short int port;
212 spin_lock_irqsave(&port_lock,flags);
213 reg += socket * 0x40;
214 port = sockets[socket].io_base;
217 spin_unlock_irqrestore(&port_lock,flags);
222 static unsigned short indirect_read16(int socket, unsigned short reg)
224 unsigned short int port;
227 spin_lock_irqsave(&port_lock,flags);
228 reg = reg + socket * 0x40;
229 port = sockets[socket].io_base;
234 tmp = tmp | (inb(port+1)<<8);
235 spin_unlock_irqrestore(&port_lock,flags);
240 static void indirect_write(int socket, unsigned short reg, unsigned char value)
242 unsigned short int port;
244 spin_lock_irqsave(&port_lock,flags);
245 reg = reg + socket * 0x40;
246 port = sockets[socket].io_base;
249 spin_unlock_irqrestore(&port_lock,flags);
252 static void indirect_setbit(int socket, unsigned short reg, unsigned char mask)
254 unsigned short int port;
257 spin_lock_irqsave(&port_lock,flags);
258 reg = reg + socket * 0x40;
259 port = sockets[socket].io_base;
265 spin_unlock_irqrestore(&port_lock,flags);
269 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
271 unsigned short int port;
274 spin_lock_irqsave(&port_lock,flags);
275 reg = reg + socket * 0x40;
276 port = sockets[socket].io_base;
282 spin_unlock_irqrestore(&port_lock,flags);
285 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
287 unsigned short int port;
290 spin_lock_irqsave(&port_lock,flags);
291 reg = reg + socket * 0x40;
292 port = sockets[socket].io_base;
303 spin_unlock_irqrestore(&port_lock,flags);
306 /* simple helper functions */
307 /* External clock time, in nanoseconds. 120 ns = 8.33 MHz */
308 static int cycle_time = 120;
310 static int to_cycles(int ns)
313 return ns/cycle_time;
319 /* Interrupt handler functionality */
321 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
327 unsigned int events, active=0;
329 /* enter("i82092aa_interrupt");*/
334 printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
340 for (i=0;i<socket_count;i++) {
342 if (sockets[i].card_state==0) /* Inactive socket, should not happen */
345 csc = indirect_read(i,I365_CSC); /* card status change register */
347 if (csc==0) /* no events on this socket */
352 if (csc & I365_CSC_DETECT) {
354 printk("Card detected in socket %i!\n",i);
357 if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) {
358 /* For IO/CARDS, bit 0 means "read the card" */
359 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
361 /* Check for battery/ready events */
362 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
363 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
364 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
368 pcmcia_parse_events(&sockets[i].socket, events);
373 if (active==0) /* no more events to handle */
377 return IRQ_RETVAL(handled);
378 /* leave("i82092aa_interrupt");*/
383 /* socket functions */
385 static int card_present(int socketno)
388 enter("card_present");
390 if ((socketno<0) || (socketno >= MAX_SOCKETS))
392 if (sockets[socketno].io_base == 0)
396 val = indirect_read(socketno, 1); /* Interface status register */
398 leave("card_present 1");
402 leave("card_present 0");
406 static void set_bridge_state(int sock)
408 enter("set_bridge_state");
409 indirect_write(sock, I365_GBLCTL,0x00);
410 indirect_write(sock, I365_GENCTL,0x00);
412 indirect_setbit(sock, I365_INTCTL,0x08);
413 leave("set_bridge_state");
421 static int i82092aa_init(struct pcmcia_socket *sock)
424 struct resource res = { .start = 0, .end = 0x0fff };
425 pccard_io_map io = { 0, 0, 0, 0, 1 };
426 pccard_mem_map mem = { .res = &res, };
428 enter("i82092aa_init");
430 for (i = 0; i < 2; i++) {
432 i82092aa_set_io_map(sock, &io);
434 for (i = 0; i < 5; i++) {
436 i82092aa_set_mem_map(sock, &mem);
439 leave("i82092aa_init");
443 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
445 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
448 enter("i82092aa_get_status");
450 status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
453 if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
457 /* IO cards have a different meaning of bits 0,1 */
458 /* Also notice the inverse-logic on the bits */
459 if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
461 if (!(status & I365_CS_STSCHG))
463 } else { /* non I/O card */
464 if (!(status & I365_CS_BVD1))
465 *value |= SS_BATDEAD;
466 if (!(status & I365_CS_BVD2))
467 *value |= SS_BATWARN;
471 if (status & I365_CS_WRPROT)
472 (*value) |= SS_WRPROT; /* card is write protected */
474 if (status & I365_CS_READY)
475 (*value) |= SS_READY; /* card is not busy */
477 if (status & I365_CS_POWERON)
478 (*value) |= SS_POWERON; /* power is applied to the card */
481 leave("i82092aa_get_status");
486 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
488 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
491 enter("i82092aa_set_socket");
493 /* First, set the global controller options */
495 set_bridge_state(sock);
497 /* Values for the IGENC register */
500 if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */
501 reg = reg | I365_PC_RESET;
502 if (state->flags & SS_IOCARD)
503 reg = reg | I365_PC_IOCARD;
505 indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
507 /* Power registers */
509 reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
511 if (state->flags & SS_PWR_AUTO) {
512 printk("Auto power\n");
513 reg |= I365_PWR_AUTO; /* automatic power mngmnt */
515 if (state->flags & SS_OUTPUT_ENA) {
516 printk("Power Enabled \n");
517 reg |= I365_PWR_OUT; /* enable power */
520 switch (state->Vcc) {
524 printk("setting voltage to Vcc to 5V on socket %i\n",sock);
528 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
529 leave("i82092aa_set_socket");
534 switch (state->Vpp) {
536 printk("not setting Vpp on socket %i\n",sock);
539 printk("setting Vpp to 5.0 for socket %i\n",sock);
540 reg |= I365_VPP1_5V | I365_VPP2_5V;
543 printk("setting Vpp to 12.0\n");
544 reg |= I365_VPP1_12V | I365_VPP2_12V;
547 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
548 leave("i82092aa_set_socket");
552 if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
553 indirect_write(sock,I365_POWER,reg);
555 /* Enable specific interrupt events */
558 if (state->csc_mask & SS_DETECT) {
559 reg |= I365_CSC_DETECT;
561 if (state->flags & SS_IOCARD) {
562 if (state->csc_mask & SS_STSCHG)
563 reg |= I365_CSC_STSCHG;
565 if (state->csc_mask & SS_BATDEAD)
566 reg |= I365_CSC_BVD1;
567 if (state->csc_mask & SS_BATWARN)
568 reg |= I365_CSC_BVD2;
569 if (state->csc_mask & SS_READY)
570 reg |= I365_CSC_READY;
574 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
576 indirect_write(sock,I365_CSCINT,reg);
577 (void)indirect_read(sock,I365_CSC);
579 leave("i82092aa_set_socket");
583 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
585 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
586 unsigned char map, ioctl;
588 enter("i82092aa_set_io_map");
592 /* Check error conditions */
594 leave("i82092aa_set_io_map with invalid map");
597 if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
598 leave("i82092aa_set_io_map with invalid io");
602 /* Turn off the window before changing anything */
603 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
604 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
606 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
608 /* write the new values */
609 indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
610 indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
612 ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
614 if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
615 ioctl |= I365_IOCTL_16BIT(map);
617 indirect_write(sock,I365_IOCTL,ioctl);
619 /* Turn the window back on if needed */
620 if (io->flags & MAP_ACTIVE)
621 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
623 leave("i82092aa_set_io_map");
627 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
629 struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
630 unsigned int sock = sock_info->number;
631 struct pci_bus_region region;
632 unsigned short base, i;
635 enter("i82092aa_set_mem_map");
637 pcibios_resource_to_bus(sock_info->dev, ®ion, mem->res);
641 leave("i82092aa_set_mem_map: invalid map");
646 if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
647 (mem->speed > 1000) ) {
648 leave("i82092aa_set_mem_map: invalid address / speed");
649 printk("invalid mem map for socket %i: %llx to %llx with a "
652 (unsigned long long)region.start,
653 (unsigned long long)region.end,
658 /* Turn off the window before changing anything */
659 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
660 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
663 /* 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); */
665 /* write the start address */
666 base = I365_MEM(map);
667 i = (region.start >> 12) & 0x0fff;
668 if (mem->flags & MAP_16BIT)
670 if (mem->flags & MAP_0WS)
672 indirect_write16(sock,base+I365_W_START,i);
674 /* write the stop address */
676 i= (region.end >> 12) & 0x0fff;
677 switch (to_cycles(mem->speed)) {
687 i |= I365_MEM_WS1 | I365_MEM_WS0;
691 indirect_write16(sock,base+I365_W_STOP,i);
695 i = ((mem->card_start - region.start) >> 12) & 0x3fff;
696 if (mem->flags & MAP_WRPROT)
697 i |= I365_MEM_WRPROT;
698 if (mem->flags & MAP_ATTRIB) {
699 /* printk("requesting attribute memory for socket %i\n",sock);*/
702 /* printk("requesting normal memory for socket %i\n",sock);*/
704 indirect_write16(sock,base+I365_W_OFF,i);
706 /* Enable the window if necessary */
707 if (mem->flags & MAP_ACTIVE)
708 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
710 leave("i82092aa_set_mem_map");
714 static int i82092aa_module_init(void)
716 return pci_register_driver(&i82092aa_pci_driver);
719 static void i82092aa_module_exit(void)
721 enter("i82092aa_module_exit");
722 pci_unregister_driver(&i82092aa_pci_driver);
723 if (sockets[0].io_base>0)
724 release_region(sockets[0].io_base, 2);
725 leave("i82092aa_module_exit");
728 module_init(i82092aa_module_init);
729 module_exit(i82092aa_module_exit);