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/config.h>
14 #include <linux/module.h>
15 #include <linux/pci.h>
16 #include <linux/init.h>
17 #include <linux/workqueue.h>
18 #include <linux/interrupt.h>
19 #include <linux/device.h>
21 #include <pcmcia/cs_types.h>
22 #include <pcmcia/ss.h>
23 #include <pcmcia/cs.h>
25 #include <asm/system.h>
31 MODULE_LICENSE("GPL");
33 /* PCI core routines */
34 static struct pci_device_id i82092aa_pci_ids[] = {
36 .vendor = PCI_VENDOR_ID_INTEL,
37 .device = PCI_DEVICE_ID_INTEL_82092AA_0,
38 .subvendor = PCI_ANY_ID,
39 .subdevice = PCI_ANY_ID,
43 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
45 static int i82092aa_socket_suspend (struct pci_dev *dev, u32 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);
55 static struct pci_driver i82092aa_pci_drv = {
57 .id_table = i82092aa_pci_ids,
58 .probe = i82092aa_pci_probe,
59 .remove = __devexit_p(i82092aa_pci_remove),
60 .suspend = i82092aa_socket_suspend,
61 .resume = i82092aa_socket_resume,
65 /* the pccard structure and its functions */
66 static struct pccard_operations i82092aa_operations = {
67 .init = i82092aa_init,
68 .suspend = i82092aa_suspend,
69 .get_status = i82092aa_get_status,
70 .get_socket = i82092aa_get_socket,
71 .set_socket = i82092aa_set_socket,
72 .set_io_map = i82092aa_set_io_map,
73 .set_mem_map = i82092aa_set_mem_map,
76 /* The card can do upto 4 sockets, allocate a structure for each of them */
80 int card_state; /* 0 = no socket,
82 2 = card but not initialized,
83 3 = operational card */
84 kio_addr_t io_base; /* base io address of the socket */
86 struct pcmcia_socket socket;
87 struct pci_dev *dev; /* The PCI device for the socket */
91 static struct socket_info sockets[MAX_SOCKETS];
92 static int socket_count; /* shortcut */
95 static int __devinit i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
97 unsigned char configbyte;
100 enter("i82092aa_pci_probe");
102 if ((ret = pci_enable_device(dev)))
105 pci_read_config_byte(dev, 0x40, &configbyte); /* PCI Configuration Control */
106 switch(configbyte&6) {
119 printk(KERN_ERR "i82092aa: Oops, you did something we didn't think of.\n");
121 goto err_out_disable;
123 printk(KERN_INFO "i82092aa: configured as a %d socket device.\n", socket_count);
125 if (!request_region(pci_resource_start(dev, 0), 2, "i82092aa")) {
127 goto err_out_disable;
130 for (i = 0;i<socket_count;i++) {
131 sockets[i].card_state = 1; /* 1 = present but empty */
132 sockets[i].io_base = pci_resource_start(dev, 0);
133 sockets[i].socket.features |= SS_CAP_PCCARD;
134 sockets[i].socket.map_size = 0x1000;
135 sockets[i].socket.irq_mask = 0;
136 sockets[i].socket.pci_irq = dev->irq;
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, SA_SHIRQ, "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.dev = &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, struct pt_regs *regs)
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_suspend(struct pcmcia_socket *sock)
446 enter("i82092aa_suspend");
447 retval = i82092aa_set_socket(sock, &dead_socket);
448 leave("i82092aa_suspend");
452 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
454 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
457 enter("i82092aa_get_status");
459 status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
462 if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
466 /* IO cards have a different meaning of bits 0,1 */
467 /* Also notice the inverse-logic on the bits */
468 if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
470 if (!(status & I365_CS_STSCHG))
472 } else { /* non I/O card */
473 if (!(status & I365_CS_BVD1))
474 *value |= SS_BATDEAD;
475 if (!(status & I365_CS_BVD2))
476 *value |= SS_BATWARN;
480 if (status & I365_CS_WRPROT)
481 (*value) |= SS_WRPROT; /* card is write protected */
483 if (status & I365_CS_READY)
484 (*value) |= SS_READY; /* card is not busy */
486 if (status & I365_CS_POWERON)
487 (*value) |= SS_POWERON; /* power is applied to the card */
490 leave("i82092aa_get_status");
495 static int i82092aa_get_socket(struct pcmcia_socket *socket, socket_state_t *state)
497 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
498 unsigned char reg,vcc,vpp;
500 enter("i82092aa_get_socket");
507 /* First the power status of the socket */
508 reg = indirect_read(sock,I365_POWER); /* PCTRL - Power Control Register */
510 if (reg & I365_PWR_AUTO)
511 state->flags |= SS_PWR_AUTO; /* Automatic Power Switch */
513 if (reg & I365_PWR_OUT)
514 state->flags |= SS_OUTPUT_ENA; /* Output signals are enabled */
516 vcc = reg & I365_VCC_MASK; vpp = reg & I365_VPP1_MASK;
518 if (reg & I365_VCC_5V) { /* Can still be 3.3V, in this case the Vcc value will be overwritten later */
521 if (vpp == I365_VPP1_5V)
523 if (vpp == I365_VPP1_12V)
528 if ((reg & I365_VCC_3V)==I365_VCC_3V)
532 /* Now the IO card, RESET flags and IO interrupt */
534 reg = indirect_read(sock, I365_INTCTL); /* IGENC, Interrupt and General Control */
536 if ((reg & I365_PC_RESET)==0)
537 state->flags |= SS_RESET;
538 if (reg & I365_PC_IOCARD)
539 state->flags |= SS_IOCARD; /* This is an IO card */
541 /* Set the IRQ number */
542 if (sockets[sock].dev!=NULL)
543 state->io_irq = sockets[sock].dev->irq;
545 /* Card status change */
546 reg = indirect_read(sock, I365_CSCINT); /* CSCICR, Card Status Change Interrupt Configuration */
548 if (reg & I365_CSC_DETECT)
549 state->csc_mask |= SS_DETECT; /* Card detect is enabled */
551 if (state->flags & SS_IOCARD) {/* IO Cards behave different */
552 if (reg & I365_CSC_STSCHG)
553 state->csc_mask |= SS_STSCHG;
555 if (reg & I365_CSC_BVD1)
556 state->csc_mask |= SS_BATDEAD;
557 if (reg & I365_CSC_BVD2)
558 state->csc_mask |= SS_BATWARN;
559 if (reg & I365_CSC_READY)
560 state->csc_mask |= SS_READY;
563 leave("i82092aa_get_socket");
567 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state)
569 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
572 enter("i82092aa_set_socket");
574 /* First, set the global controller options */
576 set_bridge_state(sock);
578 /* Values for the IGENC register */
581 if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */
582 reg = reg | I365_PC_RESET;
583 if (state->flags & SS_IOCARD)
584 reg = reg | I365_PC_IOCARD;
586 indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
588 /* Power registers */
590 reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
592 if (state->flags & SS_PWR_AUTO) {
593 printk("Auto power\n");
594 reg |= I365_PWR_AUTO; /* automatic power mngmnt */
596 if (state->flags & SS_OUTPUT_ENA) {
597 printk("Power Enabled \n");
598 reg |= I365_PWR_OUT; /* enable power */
601 switch (state->Vcc) {
605 printk("setting voltage to Vcc to 5V on socket %i\n",sock);
609 printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
610 leave("i82092aa_set_socket");
615 switch (state->Vpp) {
617 printk("not setting Vpp on socket %i\n",sock);
620 printk("setting Vpp to 5.0 for socket %i\n",sock);
621 reg |= I365_VPP1_5V | I365_VPP2_5V;
624 printk("setting Vpp to 12.0\n");
625 reg |= I365_VPP1_12V | I365_VPP2_12V;
628 printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
629 leave("i82092aa_set_socket");
633 if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
634 indirect_write(sock,I365_POWER,reg);
636 /* Enable specific interrupt events */
639 if (state->csc_mask & SS_DETECT) {
640 reg |= I365_CSC_DETECT;
642 if (state->flags & SS_IOCARD) {
643 if (state->csc_mask & SS_STSCHG)
644 reg |= I365_CSC_STSCHG;
646 if (state->csc_mask & SS_BATDEAD)
647 reg |= I365_CSC_BVD1;
648 if (state->csc_mask & SS_BATWARN)
649 reg |= I365_CSC_BVD2;
650 if (state->csc_mask & SS_READY)
651 reg |= I365_CSC_READY;
655 /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
657 indirect_write(sock,I365_CSCINT,reg);
658 (void)indirect_read(sock,I365_CSC);
660 leave("i82092aa_set_socket");
664 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
666 unsigned int sock = container_of(socket, struct socket_info, socket)->number;
667 unsigned char map, ioctl;
669 enter("i82092aa_set_io_map");
673 /* Check error conditions */
675 leave("i82092aa_set_io_map with invalid map");
678 if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
679 leave("i82092aa_set_io_map with invalid io");
683 /* Turn off the window before changing anything */
684 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
685 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
687 /* printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop); */
689 /* write the new values */
690 indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);
691 indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);
693 ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
695 if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
696 ioctl |= I365_IOCTL_16BIT(map);
698 indirect_write(sock,I365_IOCTL,ioctl);
700 /* Turn the window back on if needed */
701 if (io->flags & MAP_ACTIVE)
702 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
704 leave("i82092aa_set_io_map");
708 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
710 struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
711 unsigned int sock = sock_info->number;
712 struct pci_bus_region region;
713 unsigned short base, i;
716 enter("i82092aa_set_mem_map");
718 pcibios_resource_to_bus(sock_info->dev, ®ion, mem->res);
722 leave("i82092aa_set_mem_map: invalid map");
727 if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
728 (mem->speed > 1000) ) {
729 leave("i82092aa_set_mem_map: invalid address / speed");
730 printk("invalid mem map for socket %i : %lx to %lx with a start of %x \n",sock,region.start, region.end, mem->card_start);
734 /* Turn off the window before changing anything */
735 if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
736 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
739 /* 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); */
741 /* write the start address */
742 base = I365_MEM(map);
743 i = (region.start >> 12) & 0x0fff;
744 if (mem->flags & MAP_16BIT)
746 if (mem->flags & MAP_0WS)
748 indirect_write16(sock,base+I365_W_START,i);
750 /* write the stop address */
752 i= (region.end >> 12) & 0x0fff;
753 switch (to_cycles(mem->speed)) {
763 i |= I365_MEM_WS1 | I365_MEM_WS0;
767 indirect_write16(sock,base+I365_W_STOP,i);
771 i = ((mem->card_start - region.start) >> 12) & 0x3fff;
772 if (mem->flags & MAP_WRPROT)
773 i |= I365_MEM_WRPROT;
774 if (mem->flags & MAP_ATTRIB) {
775 /* printk("requesting attribute memory for socket %i\n",sock);*/
778 /* printk("requesting normal memory for socket %i\n",sock);*/
780 indirect_write16(sock,base+I365_W_OFF,i);
782 /* Enable the window if necessary */
783 if (mem->flags & MAP_ACTIVE)
784 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
786 leave("i82092aa_set_mem_map");
790 static int i82092aa_module_init(void)
792 enter("i82092aa_module_init");
793 pci_register_driver(&i82092aa_pci_drv);
794 leave("i82092aa_module_init");
798 static void i82092aa_module_exit(void)
800 enter("i82092aa_module_exit");
801 pci_unregister_driver(&i82092aa_pci_drv);
802 if (sockets[0].io_base>0)
803 release_region(sockets[0].io_base, 2);
804 leave("i82092aa_module_exit");
807 module_init(i82092aa_module_init);
808 module_exit(i82092aa_module_exit);