2 * Regular cardbus driver ("yenta_socket")
4 * (C) Copyright 1999, 2000 Linus Torvalds
7 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
8 * Dynamically adjust the size of the bridge resource
10 * May 2003: Dominik Brodowski <linux@brodo.de>
11 * Merge pci_socket.c and yenta.c into one file
13 #include <linux/init.h>
14 #include <linux/pci.h>
15 #include <linux/sched.h>
16 #include <linux/workqueue.h>
17 #include <linux/interrupt.h>
18 #include <linux/delay.h>
19 #include <linux/module.h>
21 #include <pcmcia/version.h>
22 #include <pcmcia/cs_types.h>
23 #include <pcmcia/ss.h>
24 #include <pcmcia/cs.h>
28 #include "yenta_socket.h"
33 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
35 #define debug(x,args...)
39 #define to_cycles(ns) ((ns)/120)
40 #define to_ns(cycles) ((cycles)*120)
42 static int yenta_probe_cb_irq(struct yenta_socket *socket);
46 * Generate easy-to-use ways of reading a cardbus sockets
47 * regular memory space ("cb_xxx"), configuration space
48 * ("config_xxx") and compatibility space ("exca_xxxx")
50 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
52 u32 val = readl(socket->base + reg);
53 debug("%p %04x %08x\n", socket, reg, val);
57 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
59 debug("%p %04x %08x\n", socket, reg, val);
60 writel(val, socket->base + reg);
63 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
66 pci_read_config_byte(socket->dev, offset, &val);
67 debug("%p %04x %02x\n", socket, offset, val);
71 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
74 pci_read_config_word(socket->dev, offset, &val);
75 debug("%p %04x %04x\n", socket, offset, val);
79 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
82 pci_read_config_dword(socket->dev, offset, &val);
83 debug("%p %04x %08x\n", socket, offset, val);
87 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
89 debug("%p %04x %02x\n", socket, offset, val);
90 pci_write_config_byte(socket->dev, offset, val);
93 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
95 debug("%p %04x %04x\n", socket, offset, val);
96 pci_write_config_word(socket->dev, offset, val);
99 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
101 debug("%p %04x %08x\n", socket, offset, val);
102 pci_write_config_dword(socket->dev, offset, val);
105 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
107 u8 val = readb(socket->base + 0x800 + reg);
108 debug("%p %04x %02x\n", socket, reg, val);
112 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
115 val = readb(socket->base + 0x800 + reg);
116 val |= readb(socket->base + 0x800 + reg + 1) << 8;
117 debug("%p %04x %04x\n", socket, reg, val);
121 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
123 debug("%p %04x %02x\n", socket, reg, val);
124 writeb(val, socket->base + 0x800 + reg);
127 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
129 debug("%p %04x %04x\n", socket, reg, val);
130 writeb(val, socket->base + 0x800 + reg);
131 writeb(val >> 8, socket->base + 0x800 + reg + 1);
135 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
136 * on what kind of card is inserted..
138 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
140 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
142 u32 state = cb_readl(socket, CB_SOCKET_STATE);
144 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
145 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
146 val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD
147 | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
149 if (state & CB_CBCARD) {
151 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
152 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
153 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
155 u8 status = exca_readb(socket, I365_STATUS);
156 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
157 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
158 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
160 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
161 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
163 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
164 val |= (status & I365_CS_READY) ? SS_READY : 0;
165 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
172 static int yenta_Vcc_power(u32 control)
174 switch (control & CB_SC_VCC_MASK) {
175 case CB_SC_VCC_5V: return 50;
176 case CB_SC_VCC_3V: return 33;
181 static int yenta_Vpp_power(u32 control)
183 switch (control & CB_SC_VPP_MASK) {
184 case CB_SC_VPP_12V: return 120;
185 case CB_SC_VPP_5V: return 50;
186 case CB_SC_VPP_3V: return 33;
191 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
193 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
197 control = cb_readl(socket, CB_SOCKET_CONTROL);
199 state->Vcc = yenta_Vcc_power(control);
200 state->Vpp = yenta_Vpp_power(control);
201 state->io_irq = socket->io_irq;
203 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
204 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
205 if (bridge & CB_BRIDGE_CRST)
206 state->flags |= SS_RESET;
210 /* 16-bit card state.. */
211 reg = exca_readb(socket, I365_POWER);
212 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
213 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
215 reg = exca_readb(socket, I365_INTCTL);
216 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
217 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
219 reg = exca_readb(socket, I365_CSCINT);
220 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
221 if (state->flags & SS_IOCARD) {
222 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
224 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
225 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
226 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
232 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
234 u32 reg = 0; /* CB_SC_STPCLK? */
235 switch (state->Vcc) {
236 case 33: reg = CB_SC_VCC_3V; break;
237 case 50: reg = CB_SC_VCC_5V; break;
238 default: reg = 0; break;
240 switch (state->Vpp) {
241 case 33: reg |= CB_SC_VPP_3V; break;
242 case 50: reg |= CB_SC_VPP_5V; break;
243 case 120: reg |= CB_SC_VPP_12V; break;
245 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
246 cb_writel(socket, CB_SOCKET_CONTROL, reg);
249 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
251 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
254 yenta_set_power(socket, state);
255 socket->io_irq = state->io_irq;
256 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
257 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
259 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
261 /* ISA interrupt control? */
262 intr = exca_readb(socket, I365_INTCTL);
263 intr = (intr & ~0xf);
264 if (!socket->cb_irq) {
265 intr |= state->io_irq;
266 bridge |= CB_BRIDGE_INTR;
268 exca_writeb(socket, I365_INTCTL, intr);
272 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
273 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
274 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
275 if (state->io_irq != socket->cb_irq) {
276 reg |= state->io_irq;
277 bridge |= CB_BRIDGE_INTR;
279 exca_writeb(socket, I365_INTCTL, reg);
281 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
282 reg |= I365_PWR_NORESET;
283 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
284 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
285 if (exca_readb(socket, I365_POWER) != reg)
286 exca_writeb(socket, I365_POWER, reg);
288 /* CSC interrupt: no ISA irq for CSC */
289 reg = I365_CSC_DETECT;
290 if (state->flags & SS_IOCARD) {
291 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
293 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
294 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
295 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
297 exca_writeb(socket, I365_CSCINT, reg);
298 exca_readb(socket, I365_CSC);
300 sock->zoom_video(sock, state->flags & SS_ZVCARD);
302 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
303 /* Socket event mask: get card insert/remove events.. */
304 cb_writel(socket, CB_SOCKET_EVENT, -1);
305 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
309 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
311 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
313 unsigned char ioctl, addr, enable;
320 enable = I365_ENA_IO(map);
321 addr = exca_readb(socket, I365_ADDRWIN);
323 /* Disable the window before changing it.. */
326 exca_writeb(socket, I365_ADDRWIN, addr);
329 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
330 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
332 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
333 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
334 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
335 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
336 exca_writeb(socket, I365_IOCTL, ioctl);
338 if (io->flags & MAP_ACTIVE)
339 exca_writeb(socket, I365_ADDRWIN, addr | enable);
343 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
345 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
347 unsigned char addr, enable;
348 unsigned int start, stop, card_start;
352 start = mem->sys_start;
353 stop = mem->sys_stop;
354 card_start = mem->card_start;
356 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
357 (card_start >> 26) || mem->speed > 1000)
360 enable = I365_ENA_MEM(map);
361 addr = exca_readb(socket, I365_ADDRWIN);
364 exca_writeb(socket, I365_ADDRWIN, addr);
367 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
369 word = (start >> 12) & 0x0fff;
370 if (mem->flags & MAP_16BIT)
371 word |= I365_MEM_16BIT;
372 if (mem->flags & MAP_0WS)
373 word |= I365_MEM_0WS;
374 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
376 word = (stop >> 12) & 0x0fff;
377 switch (to_cycles(mem->speed)) {
379 case 1: word |= I365_MEM_WS0; break;
380 case 2: word |= I365_MEM_WS1; break;
381 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
383 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
385 word = ((card_start - start) >> 12) & 0x3fff;
386 if (mem->flags & MAP_WRPROT)
387 word |= I365_MEM_WRPROT;
388 if (mem->flags & MAP_ATTRIB)
389 word |= I365_MEM_REG;
390 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
392 if (mem->flags & MAP_ACTIVE)
393 exca_writeb(socket, I365_ADDRWIN, addr | enable);
398 static unsigned int yenta_events(struct yenta_socket *socket)
404 /* Clear interrupt status for the event */
405 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
406 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
408 csc = exca_readb(socket, I365_CSC);
410 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
411 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
412 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
413 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
415 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
416 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
417 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
423 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
426 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
428 events = yenta_events(socket);
430 pcmcia_parse_events(&socket->socket, events);
436 static void yenta_interrupt_wrapper(unsigned long data)
438 struct yenta_socket *socket = (struct yenta_socket *) data;
440 yenta_interrupt(0, (void *)socket, NULL);
441 socket->poll_timer.expires = jiffies + HZ;
442 add_timer(&socket->poll_timer);
445 static void yenta_clear_maps(struct yenta_socket *socket)
448 pccard_io_map io = { 0, 0, 0, 0, 1 };
449 pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
451 mem.sys_stop = 0x0fff;
452 yenta_set_socket(&socket->socket, &dead_socket);
453 for (i = 0; i < 2; i++) {
455 yenta_set_io_map(&socket->socket, &io);
457 for (i = 0; i < 5; i++) {
459 yenta_set_mem_map(&socket->socket, &mem);
463 /* Called at resume and initialization events */
464 static int yenta_sock_init(struct pcmcia_socket *sock)
466 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
470 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
472 bridge |= CB_BRIDGE_INTR;
473 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
475 exca_writeb(socket, I365_GBLCTL, 0x00);
476 exca_writeb(socket, I365_GENCTL, 0x00);
478 /* Redo card voltage interrogation */
479 state = cb_readl(socket, CB_SOCKET_STATE);
480 if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD |
481 CB_3VCARD | CB_XVCARD | CB_YVCARD)))
482 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
484 yenta_clear_maps(socket);
486 if (socket->type && socket->type->sock_init)
487 socket->type->sock_init(socket);
489 /* Re-enable CSC interrupts */
490 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
495 static int yenta_sock_suspend(struct pcmcia_socket *sock)
497 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
499 yenta_set_socket(sock, &dead_socket);
501 /* Disable CSC interrupts */
502 cb_writel(socket, CB_SOCKET_MASK, 0x0);
508 * Use an adaptive allocation for the memory resource,
509 * sometimes the memory behind pci bridges is limited:
510 * 1/8 of the size of the io window of the parent.
511 * max 4 MB, min 16 kB.
513 #define BRIDGE_MEM_MAX 4*1024*1024
514 #define BRIDGE_MEM_MIN 16*1024
516 #define BRIDGE_IO_MAX 256
517 #define BRIDGE_IO_MIN 32
519 #ifndef PCIBIOS_MIN_CARDBUS_IO
520 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
523 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type)
526 struct resource *root, *res;
528 u32 align, size, min;
532 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
534 if (type & IORESOURCE_IO)
537 offset = 0x1c + 8*nr;
538 bus = socket->dev->subordinate;
539 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
540 res->name = bus->name;
544 root = pci_find_parent_resource(socket->dev, res);
549 start = config_readl(socket, offset) & mask;
550 end = config_readl(socket, offset+4) | ~mask;
551 if (start && end > start) {
554 if (request_resource(root, res) == 0)
556 printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n",
557 pci_name(socket->dev), nr);
558 res->start = res->end = 0;
561 if (type & IORESOURCE_IO) {
563 size = BRIDGE_IO_MAX;
565 start = PCIBIOS_MIN_CARDBUS_IO;
568 unsigned long avail = root->end - root->start;
570 size = BRIDGE_MEM_MAX;
571 if (size > avail/8) {
573 /* round size down to next power of 2 */
575 while ((size /= 2) != 0)
579 if (size < BRIDGE_MEM_MIN)
580 size = BRIDGE_MEM_MIN;
581 min = BRIDGE_MEM_MIN;
583 start = PCIBIOS_MIN_MEM;
588 if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) {
589 config_writel(socket, offset, res->start);
590 config_writel(socket, offset+4, res->end);
595 } while (size >= min);
596 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
597 pci_name(socket->dev), type);
598 res->start = res->end = 0;
602 * Allocate the bridge mappings for the device..
604 static void yenta_allocate_resources(struct yenta_socket *socket)
606 yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH);
607 yenta_allocate_res(socket, 1, IORESOURCE_MEM);
608 yenta_allocate_res(socket, 2, IORESOURCE_IO);
609 yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */
614 * Free the bridge mappings for the device..
616 static void yenta_free_resources(struct yenta_socket *socket)
620 struct resource *res;
621 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
622 if (res->start != 0 && res->end != 0)
623 release_resource(res);
624 res->start = res->end = 0;
630 * Close it down - release our resources and go home..
632 static void yenta_close(struct pci_dev *dev)
634 struct yenta_socket *sock = pci_get_drvdata(dev);
636 /* we don't want a dying socket registered */
637 pcmcia_unregister_socket(&sock->socket);
639 /* Disable all events so we don't die in an IRQ storm */
640 cb_writel(sock, CB_SOCKET_MASK, 0x0);
641 exca_writeb(sock, I365_CSCINT, 0);
644 free_irq(sock->cb_irq, sock);
646 del_timer_sync(&sock->poll_timer);
650 yenta_free_resources(sock);
652 pci_release_regions(dev);
653 pci_set_drvdata(dev, NULL);
657 static struct pccard_operations yenta_socket_operations = {
658 .init = yenta_sock_init,
659 .suspend = yenta_sock_suspend,
660 .get_status = yenta_get_status,
661 .get_socket = yenta_get_socket,
662 .set_socket = yenta_set_socket,
663 .set_io_map = yenta_set_io_map,
664 .set_mem_map = yenta_set_mem_map,
673 CARDBUS_TYPE_DEFAULT = -1,
683 * Different cardbus controllers have slightly different
684 * initialization sequences etc details. List them here..
686 struct cardbus_type cardbus_type[] = {
687 [CARDBUS_TYPE_TI] = {
688 .override = ti_override,
689 .save_state = ti_save_state,
690 .restore_state = ti_restore_state,
691 .sock_init = ti_init,
693 [CARDBUS_TYPE_TI113X] = {
694 .override = ti113x_override,
695 .save_state = ti_save_state,
696 .restore_state = ti_restore_state,
697 .sock_init = ti_init,
699 [CARDBUS_TYPE_TI12XX] = {
700 .override = ti12xx_override,
701 .save_state = ti_save_state,
702 .restore_state = ti_restore_state,
703 .sock_init = ti_init,
705 [CARDBUS_TYPE_TI1250] = {
706 .override = ti1250_override,
707 .save_state = ti_save_state,
708 .restore_state = ti_restore_state,
709 .sock_init = ti_init,
711 [CARDBUS_TYPE_RICOH] = {
712 .override = ricoh_override,
713 .save_state = ricoh_save_state,
714 .restore_state = ricoh_restore_state,
716 [CARDBUS_TYPE_TOPIC97] = {
717 .override = topic97_override,
723 * Only probe "regular" interrupts, don't
724 * touch dangerous spots like the mouse irq,
725 * because there are mice that apparently
726 * get really confused if they get fondled
729 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
731 static u32 isa_interrupts = 0x0ef8;
733 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
740 /* Set up ISA irq routing to probe the ISA irqs.. */
741 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
742 if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
743 bridge_ctrl |= CB_BRIDGE_INTR;
744 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
748 * Probe for usable interrupts using the force
749 * register to generate bogus card status events.
751 cb_writel(socket, CB_SOCKET_EVENT, -1);
752 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
753 exca_writeb(socket, I365_CSCINT, 0);
754 val = probe_irq_on() & isa_irq_mask;
755 for (i = 1; i < 16; i++) {
756 if (!((val >> i) & 1))
758 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
759 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
761 cb_writel(socket, CB_SOCKET_EVENT, -1);
763 cb_writel(socket, CB_SOCKET_MASK, 0);
764 exca_writeb(socket, I365_CSCINT, 0);
766 mask = probe_irq_mask(val) & 0xffff;
768 bridge_ctrl &= ~CB_BRIDGE_INTR;
769 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
775 /* interrupt handler, only used during probing */
776 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
778 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
782 /* Clear interrupt status for the event */
783 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
784 cb_writel(socket, CB_SOCKET_EVENT, -1);
785 csc = exca_readb(socket, I365_CSC);
787 if (cb_event || csc) {
788 socket->probe_status = 1;
795 /* probes the PCI interrupt, use only on override functions */
796 static int yenta_probe_cb_irq(struct yenta_socket *socket)
803 socket->probe_status = 0;
805 /* disable ISA interrupts */
806 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
807 bridge_ctrl &= ~CB_BRIDGE_INTR;
808 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
810 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
811 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
815 /* generate interrupt, wait */
816 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
817 cb_writel(socket, CB_SOCKET_EVENT, -1);
818 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
819 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
821 set_current_state(TASK_UNINTERRUPTIBLE);
822 schedule_timeout(HZ/10);
824 /* disable interrupts */
825 cb_writel(socket, CB_SOCKET_MASK, 0);
826 exca_writeb(socket, I365_CSCINT, 0);
827 cb_writel(socket, CB_SOCKET_EVENT, -1);
828 exca_readb(socket, I365_CSC);
830 free_irq(socket->cb_irq, socket);
832 return (int) socket->probe_status;
838 * Set static data that doesn't need re-initializing..
840 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
842 socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
843 socket->socket.map_size = 0x1000;
844 socket->socket.pci_irq = socket->cb_irq;
845 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
846 socket->socket.cb_dev = socket->dev;
848 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
849 socket->socket.irq_mask, socket->cb_irq);
853 * Initialize the standard cardbus registers
855 static void yenta_config_init(struct yenta_socket *socket)
858 struct pci_dev *dev = socket->dev;
860 pci_set_power_state(socket->dev, 0);
862 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
863 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start);
864 config_writew(socket, PCI_COMMAND,
870 /* MAGIC NUMBERS! Fixme */
871 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
872 config_writeb(socket, PCI_LATENCY_TIMER, 168);
873 config_writel(socket, PCI_PRIMARY_BUS,
874 (176 << 24) | /* sec. latency timer */
875 (dev->subordinate->subordinate << 16) | /* subordinate bus */
876 (dev->subordinate->secondary << 8) | /* secondary bus */
877 dev->subordinate->primary); /* primary bus */
880 * Set up the bridging state:
881 * - enable write posting.
882 * - memory window 0 prefetchable, window 1 non-prefetchable
883 * - PCI interrupts enabled if a PCI interrupt exists..
885 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
886 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
887 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
888 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
892 * Initialize a cardbus controller. Make sure we have a usable
893 * interrupt, and that we can map the cardbus area. Fill in the
894 * socket information structure..
896 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
898 struct yenta_socket *socket;
901 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
904 memset(socket, 0, sizeof(*socket));
906 /* prepare pcmcia_socket */
907 socket->socket.ops = ¥ta_socket_operations;
908 socket->socket.dev.dev = &dev->dev;
909 socket->socket.driver_data = socket;
910 socket->socket.owner = THIS_MODULE;
912 /* prepare struct yenta_socket */
914 pci_set_drvdata(dev, socket);
917 * Do some basic sanity checking..
919 if (pci_enable_device(dev)) {
924 ret = pci_request_regions(dev, "yenta_socket");
928 if (!pci_resource_start(dev, 0)) {
929 printk(KERN_ERR "No cardbus resource!\n");
935 * Ok, start setup.. Map the cardbus registers,
936 * and request the IRQ.
938 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
945 * report the subsystem vendor and device for help debugging
948 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
949 dev->slot_name, dev->subsystem_vendor, dev->subsystem_device);
951 yenta_config_init(socket);
953 /* Disable all events */
954 cb_writel(socket, CB_SOCKET_MASK, 0x0);
956 /* Set up the bridge regions.. */
957 yenta_allocate_resources(socket);
959 socket->cb_irq = dev->irq;
961 /* Do we have special options for the device? */
962 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
963 id->driver_data < ARRAY_SIZE(cardbus_type)) {
964 socket->type = &cardbus_type[id->driver_data];
966 ret = socket->type->override(socket);
971 /* We must finish initialization here */
973 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
974 /* No IRQ or request_irq failed. Poll */
975 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
976 init_timer(&socket->poll_timer);
977 socket->poll_timer.function = yenta_interrupt_wrapper;
978 socket->poll_timer.data = (unsigned long)socket;
979 socket->poll_timer.expires = jiffies + HZ;
980 add_timer(&socket->poll_timer);
983 /* Figure out what the dang thing can do for the PCMCIA layer... */
984 yenta_get_socket_capabilities(socket, isa_interrupts);
985 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
987 /* Register it with the pcmcia layer.. */
988 ret = pcmcia_register_socket(&socket->socket);
993 iounmap(socket->base);
995 pci_release_regions(dev);
997 pci_disable_device(dev);
1005 static int yenta_dev_suspend (struct pci_dev *dev, u32 state)
1007 struct yenta_socket *socket = pci_get_drvdata(dev);
1010 ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1013 if (socket->type && socket->type->save_state)
1014 socket->type->save_state(socket);
1016 /* FIXME: pci_save_state needs to have a better interface */
1017 pci_save_state(dev, socket->saved_state);
1018 pci_read_config_dword(dev, 16*4, &socket->saved_state[16]);
1019 pci_read_config_dword(dev, 17*4, &socket->saved_state[17]);
1020 pci_set_power_state(dev, 3);
1027 static int yenta_dev_resume (struct pci_dev *dev)
1029 struct yenta_socket *socket = pci_get_drvdata(dev);
1032 pci_set_power_state(dev, 0);
1033 /* FIXME: pci_restore_state needs to have a better interface */
1034 pci_restore_state(dev, socket->saved_state);
1035 pci_write_config_dword(dev, 16*4, socket->saved_state[16]);
1036 pci_write_config_dword(dev, 17*4, socket->saved_state[17]);
1038 if (socket->type && socket->type->restore_state)
1039 socket->type->restore_state(socket);
1042 return pcmcia_socket_dev_resume(&dev->dev);
1046 #define CB_ID(vend,dev,type) \
1050 .subvendor = PCI_ANY_ID, \
1051 .subdevice = PCI_ANY_ID, \
1052 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1054 .driver_data = CARDBUS_TYPE_##type, \
1057 static struct pci_device_id yenta_table [] = {
1058 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1061 * TBD: Check if these TI variants can use more
1062 * advanced overrides instead. (I can't get the
1063 * data sheets for these devices. --rmk)
1065 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1067 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1068 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1070 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1071 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1072 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1073 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1074 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1075 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1076 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1077 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1078 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1079 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1080 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1081 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1082 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1083 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1085 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1086 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1088 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
1089 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
1090 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
1091 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
1093 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1094 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1095 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1096 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1097 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1099 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1100 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1102 /* match any cardbus bridge */
1103 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1104 { /* all zeroes */ }
1106 MODULE_DEVICE_TABLE(pci, yenta_table);
1109 static struct pci_driver yenta_cardbus_driver = {
1110 .name = "yenta_cardbus",
1111 .id_table = yenta_table,
1112 .probe = yenta_probe,
1113 .remove = __devexit_p(yenta_close),
1114 .suspend = yenta_dev_suspend,
1115 .resume = yenta_dev_resume,
1119 static int __init yenta_socket_init(void)
1121 return pci_register_driver (¥ta_cardbus_driver);
1125 static void __exit yenta_socket_exit (void)
1127 pci_unregister_driver (¥ta_cardbus_driver);
1131 module_init(yenta_socket_init);
1132 module_exit(yenta_socket_exit);
1134 MODULE_LICENSE("GPL");