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/cs_types.h>
22 #include <pcmcia/ss.h>
23 #include <pcmcia/cs.h>
27 #include "yenta_socket.h"
30 static int disable_clkrun;
31 module_param(disable_clkrun, bool, 0444);
32 MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
34 static int isa_probe = 1;
35 module_param(isa_probe, bool, 0444);
36 MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
38 static int pwr_irqs_off;
39 module_param(pwr_irqs_off, bool, 0644);
40 MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
43 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
45 #define debug(x,args...)
49 #define to_cycles(ns) ((ns)/120)
50 #define to_ns(cycles) ((cycles)*120)
52 static int yenta_probe_cb_irq(struct yenta_socket *socket);
55 static unsigned int override_bios;
56 module_param(override_bios, uint, 0000);
57 MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation");
60 * Generate easy-to-use ways of reading a cardbus sockets
61 * regular memory space ("cb_xxx"), configuration space
62 * ("config_xxx") and compatibility space ("exca_xxxx")
64 static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
66 u32 val = readl(socket->base + reg);
67 debug("%p %04x %08x\n", socket, reg, val);
71 static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
73 debug("%p %04x %08x\n", socket, reg, val);
74 writel(val, socket->base + reg);
77 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
80 pci_read_config_byte(socket->dev, offset, &val);
81 debug("%p %04x %02x\n", socket, offset, val);
85 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
88 pci_read_config_word(socket->dev, offset, &val);
89 debug("%p %04x %04x\n", socket, offset, val);
93 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
96 pci_read_config_dword(socket->dev, offset, &val);
97 debug("%p %04x %08x\n", socket, offset, val);
101 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
103 debug("%p %04x %02x\n", socket, offset, val);
104 pci_write_config_byte(socket->dev, offset, val);
107 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
109 debug("%p %04x %04x\n", socket, offset, val);
110 pci_write_config_word(socket->dev, offset, val);
113 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
115 debug("%p %04x %08x\n", socket, offset, val);
116 pci_write_config_dword(socket->dev, offset, val);
119 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
121 u8 val = readb(socket->base + 0x800 + reg);
122 debug("%p %04x %02x\n", socket, reg, val);
126 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
129 val = readb(socket->base + 0x800 + reg);
130 val |= readb(socket->base + 0x800 + reg + 1) << 8;
131 debug("%p %04x %04x\n", socket, reg, val);
135 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
137 debug("%p %04x %02x\n", socket, reg, val);
138 writeb(val, socket->base + 0x800 + reg);
141 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
143 debug("%p %04x %04x\n", socket, reg, val);
144 writeb(val, socket->base + 0x800 + reg);
145 writeb(val >> 8, socket->base + 0x800 + reg + 1);
149 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
150 * on what kind of card is inserted..
152 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
154 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
156 u32 state = cb_readl(socket, CB_SOCKET_STATE);
158 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
159 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
160 val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
161 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
164 if (state & CB_CBCARD) {
166 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
167 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
168 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
169 } else if (state & CB_16BITCARD) {
170 u8 status = exca_readb(socket, I365_STATUS);
171 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
172 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
173 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
175 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
176 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
178 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
179 val |= (status & I365_CS_READY) ? SS_READY : 0;
180 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
187 static int yenta_Vcc_power(u32 control)
189 switch (control & CB_SC_VCC_MASK) {
190 case CB_SC_VCC_5V: return 50;
191 case CB_SC_VCC_3V: return 33;
196 static int yenta_Vpp_power(u32 control)
198 switch (control & CB_SC_VPP_MASK) {
199 case CB_SC_VPP_12V: return 120;
200 case CB_SC_VPP_5V: return 50;
201 case CB_SC_VPP_3V: return 33;
206 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
208 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
212 control = cb_readl(socket, CB_SOCKET_CONTROL);
214 state->Vcc = yenta_Vcc_power(control);
215 state->Vpp = yenta_Vpp_power(control);
216 state->io_irq = socket->io_irq;
218 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
219 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
220 if (bridge & CB_BRIDGE_CRST)
221 state->flags |= SS_RESET;
225 /* 16-bit card state.. */
226 reg = exca_readb(socket, I365_POWER);
227 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
228 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
230 reg = exca_readb(socket, I365_INTCTL);
231 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
232 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
234 reg = exca_readb(socket, I365_CSCINT);
235 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
236 if (state->flags & SS_IOCARD) {
237 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
239 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
240 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
241 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
247 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
249 u32 reg = 0; /* CB_SC_STPCLK? */
250 switch (state->Vcc) {
251 case 33: reg = CB_SC_VCC_3V; break;
252 case 50: reg = CB_SC_VCC_5V; break;
253 default: reg = 0; break;
255 switch (state->Vpp) {
256 case 33: reg |= CB_SC_VPP_3V; break;
257 case 50: reg |= CB_SC_VPP_5V; break;
258 case 120: reg |= CB_SC_VPP_12V; break;
260 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
261 cb_writel(socket, CB_SOCKET_CONTROL, reg);
264 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
266 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
269 yenta_set_power(socket, state);
270 socket->io_irq = state->io_irq;
271 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
272 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
274 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
276 /* ISA interrupt control? */
277 intr = exca_readb(socket, I365_INTCTL);
278 intr = (intr & ~0xf);
279 if (!socket->cb_irq) {
280 intr |= state->io_irq;
281 bridge |= CB_BRIDGE_INTR;
283 exca_writeb(socket, I365_INTCTL, intr);
287 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
288 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
289 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
290 if (state->io_irq != socket->cb_irq) {
291 reg |= state->io_irq;
292 bridge |= CB_BRIDGE_INTR;
294 exca_writeb(socket, I365_INTCTL, reg);
296 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
297 reg |= I365_PWR_NORESET;
298 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
299 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
300 if (exca_readb(socket, I365_POWER) != reg)
301 exca_writeb(socket, I365_POWER, reg);
303 /* CSC interrupt: no ISA irq for CSC */
304 reg = I365_CSC_DETECT;
305 if (state->flags & SS_IOCARD) {
306 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
308 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
309 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
310 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
312 exca_writeb(socket, I365_CSCINT, reg);
313 exca_readb(socket, I365_CSC);
315 sock->zoom_video(sock, state->flags & SS_ZVCARD);
317 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
318 /* Socket event mask: get card insert/remove events.. */
319 cb_writel(socket, CB_SOCKET_EVENT, -1);
320 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
324 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
326 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
328 unsigned char ioctl, addr, enable;
335 enable = I365_ENA_IO(map);
336 addr = exca_readb(socket, I365_ADDRWIN);
338 /* Disable the window before changing it.. */
341 exca_writeb(socket, I365_ADDRWIN, addr);
344 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
345 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
347 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
348 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
349 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
350 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
351 exca_writeb(socket, I365_IOCTL, ioctl);
353 if (io->flags & MAP_ACTIVE)
354 exca_writeb(socket, I365_ADDRWIN, addr | enable);
358 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
360 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
361 struct pci_bus_region region;
363 unsigned char addr, enable;
364 unsigned int start, stop, card_start;
367 pcibios_resource_to_bus(socket->dev, ®ion, mem->res);
370 start = region.start;
372 card_start = mem->card_start;
374 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
375 (card_start >> 26) || mem->speed > 1000)
378 enable = I365_ENA_MEM(map);
379 addr = exca_readb(socket, I365_ADDRWIN);
382 exca_writeb(socket, I365_ADDRWIN, addr);
385 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
387 word = (start >> 12) & 0x0fff;
388 if (mem->flags & MAP_16BIT)
389 word |= I365_MEM_16BIT;
390 if (mem->flags & MAP_0WS)
391 word |= I365_MEM_0WS;
392 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
394 word = (stop >> 12) & 0x0fff;
395 switch (to_cycles(mem->speed)) {
397 case 1: word |= I365_MEM_WS0; break;
398 case 2: word |= I365_MEM_WS1; break;
399 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
401 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
403 word = ((card_start - start) >> 12) & 0x3fff;
404 if (mem->flags & MAP_WRPROT)
405 word |= I365_MEM_WRPROT;
406 if (mem->flags & MAP_ATTRIB)
407 word |= I365_MEM_REG;
408 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
410 if (mem->flags & MAP_ACTIVE)
411 exca_writeb(socket, I365_ADDRWIN, addr | enable);
417 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
420 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
424 /* Clear interrupt status for the event */
425 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
426 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
428 csc = exca_readb(socket, I365_CSC);
430 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
431 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
432 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
433 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
435 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
436 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
437 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
441 pcmcia_parse_events(&socket->socket, events);
449 static void yenta_interrupt_wrapper(unsigned long data)
451 struct yenta_socket *socket = (struct yenta_socket *) data;
453 yenta_interrupt(0, (void *)socket, NULL);
454 socket->poll_timer.expires = jiffies + HZ;
455 add_timer(&socket->poll_timer);
458 static void yenta_clear_maps(struct yenta_socket *socket)
461 struct resource res = { .start = 0, .end = 0x0fff };
462 pccard_io_map io = { 0, 0, 0, 0, 1 };
463 pccard_mem_map mem = { .res = &res, };
465 yenta_set_socket(&socket->socket, &dead_socket);
466 for (i = 0; i < 2; i++) {
468 yenta_set_io_map(&socket->socket, &io);
470 for (i = 0; i < 5; i++) {
472 yenta_set_mem_map(&socket->socket, &mem);
476 /* redoes voltage interrogation if required */
477 static void yenta_interrogate(struct yenta_socket *socket)
481 state = cb_readl(socket, CB_SOCKET_STATE);
482 if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
483 (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
484 ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
485 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
488 /* Called at resume and initialization events */
489 static int yenta_sock_init(struct pcmcia_socket *sock)
491 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
494 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
496 bridge |= CB_BRIDGE_INTR;
497 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
499 exca_writeb(socket, I365_GBLCTL, 0x00);
500 exca_writeb(socket, I365_GENCTL, 0x00);
502 /* Redo card voltage interrogation */
503 yenta_interrogate(socket);
505 yenta_clear_maps(socket);
507 if (socket->type && socket->type->sock_init)
508 socket->type->sock_init(socket);
510 /* Re-enable CSC interrupts */
511 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
516 static int yenta_sock_suspend(struct pcmcia_socket *sock)
518 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
520 /* Disable CSC interrupts */
521 cb_writel(socket, CB_SOCKET_MASK, 0x0);
527 * Use an adaptive allocation for the memory resource,
528 * sometimes the memory behind pci bridges is limited:
529 * 1/8 of the size of the io window of the parent.
530 * max 4 MB, min 16 kB. We try very hard to not get below
531 * the "ACC" values, though.
533 #define BRIDGE_MEM_MAX 4*1024*1024
534 #define BRIDGE_MEM_ACC 128*1024
535 #define BRIDGE_MEM_MIN 16*1024
537 #define BRIDGE_IO_MAX 512
538 #define BRIDGE_IO_ACC 256
539 #define BRIDGE_IO_MIN 32
541 #ifndef PCIBIOS_MIN_CARDBUS_IO
542 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
545 static int yenta_search_one_res(struct resource *root, struct resource *res,
548 u32 align, size, start, end;
550 if (res->flags & IORESOURCE_IO) {
552 size = BRIDGE_IO_MAX;
553 start = PCIBIOS_MIN_CARDBUS_IO;
556 unsigned long avail = root->end - root->start;
558 size = BRIDGE_MEM_MAX;
559 if (size > avail/8) {
561 /* round size down to next power of 2 */
563 while ((size /= 2) != 0)
570 start = PCIBIOS_MIN_MEM;
575 if (allocate_resource(root, res, size, start, end, align,
581 } while (size >= min);
587 static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
591 for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) {
592 struct resource * root = socket->dev->bus->resource[i];
596 if ((res->flags ^ root->flags) &
597 (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
598 continue; /* Wrong type */
600 if (yenta_search_one_res(root, res, min))
606 static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
609 struct resource *root, *res;
613 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
614 /* Already allocated? */
618 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
620 if (type & IORESOURCE_IO)
623 bus = socket->dev->subordinate;
624 res->name = bus->name;
627 start = config_readl(socket, addr_start) & mask;
628 end = config_readl(socket, addr_end) | ~mask;
629 if (start && end > start && !override_bios) {
632 root = pci_find_parent_resource(socket->dev, res);
633 if (root && (request_resource(root, res) == 0))
635 printk(KERN_INFO "yenta %s: Preassigned resource %d busy or not available, reconfiguring...\n",
636 pci_name(socket->dev), nr);
639 if (type & IORESOURCE_IO) {
640 if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
641 (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
642 (yenta_search_res(socket, res, BRIDGE_IO_MIN))) {
643 config_writel(socket, addr_start, res->start);
644 config_writel(socket, addr_end, res->end);
648 if (type & IORESOURCE_PREFETCH) {
649 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
650 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
651 (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) {
652 config_writel(socket, addr_start, res->start);
653 config_writel(socket, addr_end, res->end);
656 /* Approximating prefetchable by non-prefetchable */
657 res->flags = IORESOURCE_MEM;
659 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
660 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
661 (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) {
662 config_writel(socket, addr_start, res->start);
663 config_writel(socket, addr_end, res->end);
668 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
669 pci_name(socket->dev), type);
670 res->start = res->end = res->flags = 0;
674 * Allocate the bridge mappings for the device..
676 static void yenta_allocate_resources(struct yenta_socket *socket)
678 yenta_allocate_res(socket, 0, IORESOURCE_IO,
679 PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
680 yenta_allocate_res(socket, 1, IORESOURCE_IO,
681 PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
682 yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
683 PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
684 yenta_allocate_res(socket, 3, IORESOURCE_MEM,
685 PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
690 * Free the bridge mappings for the device..
692 static void yenta_free_resources(struct yenta_socket *socket)
696 struct resource *res;
697 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
698 if (res->start != 0 && res->end != 0)
699 release_resource(res);
700 res->start = res->end = 0;
706 * Close it down - release our resources and go home..
708 static void yenta_close(struct pci_dev *dev)
710 struct yenta_socket *sock = pci_get_drvdata(dev);
712 /* we don't want a dying socket registered */
713 pcmcia_unregister_socket(&sock->socket);
715 /* Disable all events so we don't die in an IRQ storm */
716 cb_writel(sock, CB_SOCKET_MASK, 0x0);
717 exca_writeb(sock, I365_CSCINT, 0);
720 free_irq(sock->cb_irq, sock);
722 del_timer_sync(&sock->poll_timer);
726 yenta_free_resources(sock);
728 pci_release_regions(dev);
729 pci_disable_device(dev);
730 pci_set_drvdata(dev, NULL);
734 static struct pccard_operations yenta_socket_operations = {
735 .init = yenta_sock_init,
736 .suspend = yenta_sock_suspend,
737 .get_status = yenta_get_status,
738 .get_socket = yenta_get_socket,
739 .set_socket = yenta_set_socket,
740 .set_io_map = yenta_set_io_map,
741 .set_mem_map = yenta_set_mem_map,
751 CARDBUS_TYPE_DEFAULT = -1,
757 CARDBUS_TYPE_TOPIC97,
758 CARDBUS_TYPE_O2MICRO,
762 * Different cardbus controllers have slightly different
763 * initialization sequences etc details. List them here..
765 static struct cardbus_type cardbus_type[] = {
766 [CARDBUS_TYPE_TI] = {
767 .override = ti_override,
768 .save_state = ti_save_state,
769 .restore_state = ti_restore_state,
770 .sock_init = ti_init,
772 [CARDBUS_TYPE_TI113X] = {
773 .override = ti113x_override,
774 .save_state = ti_save_state,
775 .restore_state = ti_restore_state,
776 .sock_init = ti_init,
778 [CARDBUS_TYPE_TI12XX] = {
779 .override = ti12xx_override,
780 .save_state = ti_save_state,
781 .restore_state = ti_restore_state,
782 .sock_init = ti_init,
784 [CARDBUS_TYPE_TI1250] = {
785 .override = ti1250_override,
786 .save_state = ti_save_state,
787 .restore_state = ti_restore_state,
788 .sock_init = ti_init,
790 [CARDBUS_TYPE_RICOH] = {
791 .override = ricoh_override,
792 .save_state = ricoh_save_state,
793 .restore_state = ricoh_restore_state,
795 [CARDBUS_TYPE_TOPIC97] = {
796 .override = topic97_override,
798 [CARDBUS_TYPE_O2MICRO] = {
799 .override = o2micro_override,
800 .restore_state = o2micro_restore_state,
806 * Only probe "regular" interrupts, don't
807 * touch dangerous spots like the mouse irq,
808 * because there are mice that apparently
809 * get really confused if they get fondled
812 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
814 static u32 isa_interrupts = 0x0ef8;
816 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
823 /* Set up ISA irq routing to probe the ISA irqs.. */
824 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
825 if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
826 bridge_ctrl |= CB_BRIDGE_INTR;
827 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
831 * Probe for usable interrupts using the force
832 * register to generate bogus card status events.
834 cb_writel(socket, CB_SOCKET_EVENT, -1);
835 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
836 exca_writeb(socket, I365_CSCINT, 0);
837 val = probe_irq_on() & isa_irq_mask;
838 for (i = 1; i < 16; i++) {
839 if (!((val >> i) & 1))
841 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
842 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
844 cb_writel(socket, CB_SOCKET_EVENT, -1);
846 cb_writel(socket, CB_SOCKET_MASK, 0);
847 exca_writeb(socket, I365_CSCINT, 0);
849 mask = probe_irq_mask(val) & 0xffff;
851 bridge_ctrl &= ~CB_BRIDGE_INTR;
852 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
858 /* interrupt handler, only used during probing */
859 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
861 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
865 /* Clear interrupt status for the event */
866 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
867 cb_writel(socket, CB_SOCKET_EVENT, -1);
868 csc = exca_readb(socket, I365_CSC);
870 if (cb_event || csc) {
871 socket->probe_status = 1;
878 /* probes the PCI interrupt, use only on override functions */
879 static int yenta_probe_cb_irq(struct yenta_socket *socket)
886 socket->probe_status = 0;
888 /* disable ISA interrupts */
889 bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
890 bridge_ctrl &= ~CB_BRIDGE_INTR;
891 config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
893 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
894 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
898 /* generate interrupt, wait */
899 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
900 cb_writel(socket, CB_SOCKET_EVENT, -1);
901 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
902 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
906 /* disable interrupts */
907 cb_writel(socket, CB_SOCKET_MASK, 0);
908 exca_writeb(socket, I365_CSCINT, 0);
909 cb_writel(socket, CB_SOCKET_EVENT, -1);
910 exca_readb(socket, I365_CSC);
912 free_irq(socket->cb_irq, socket);
914 return (int) socket->probe_status;
920 * Set static data that doesn't need re-initializing..
922 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
924 socket->socket.pci_irq = socket->cb_irq;
926 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
928 socket->socket.irq_mask = 0;
930 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
931 socket->socket.irq_mask, socket->cb_irq);
935 * Initialize the standard cardbus registers
937 static void yenta_config_init(struct yenta_socket *socket)
940 struct pci_dev *dev = socket->dev;
942 pci_set_power_state(socket->dev, 0);
944 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
945 config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start);
946 config_writew(socket, PCI_COMMAND,
952 /* MAGIC NUMBERS! Fixme */
953 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
954 config_writeb(socket, PCI_LATENCY_TIMER, 168);
955 config_writel(socket, PCI_PRIMARY_BUS,
956 (176 << 24) | /* sec. latency timer */
957 (dev->subordinate->subordinate << 16) | /* subordinate bus */
958 (dev->subordinate->secondary << 8) | /* secondary bus */
959 dev->subordinate->primary); /* primary bus */
962 * Set up the bridging state:
963 * - enable write posting.
964 * - memory window 0 prefetchable, window 1 non-prefetchable
965 * - PCI interrupts enabled if a PCI interrupt exists..
967 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
968 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
969 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
970 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
974 * Initialize a cardbus controller. Make sure we have a usable
975 * interrupt, and that we can map the cardbus area. Fill in the
976 * socket information structure..
978 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
980 struct yenta_socket *socket;
983 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
986 memset(socket, 0, sizeof(*socket));
988 /* prepare pcmcia_socket */
989 socket->socket.ops = ¥ta_socket_operations;
990 socket->socket.resource_ops = &pccard_nonstatic_ops;
991 socket->socket.dev.dev = &dev->dev;
992 socket->socket.driver_data = socket;
993 socket->socket.owner = THIS_MODULE;
994 socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
995 socket->socket.map_size = 0x1000;
996 socket->socket.cb_dev = dev;
998 /* prepare struct yenta_socket */
1000 pci_set_drvdata(dev, socket);
1003 * Do some basic sanity checking..
1005 if (pci_enable_device(dev)) {
1010 ret = pci_request_regions(dev, "yenta_socket");
1014 if (!pci_resource_start(dev, 0)) {
1015 printk(KERN_ERR "No cardbus resource!\n");
1021 * Ok, start setup.. Map the cardbus registers,
1022 * and request the IRQ.
1024 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1025 if (!socket->base) {
1031 * report the subsystem vendor and device for help debugging
1034 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
1035 pci_name(dev), dev->subsystem_vendor, dev->subsystem_device);
1037 yenta_config_init(socket);
1039 /* Disable all events */
1040 cb_writel(socket, CB_SOCKET_MASK, 0x0);
1042 /* Set up the bridge regions.. */
1043 yenta_allocate_resources(socket);
1045 socket->cb_irq = dev->irq;
1047 /* Do we have special options for the device? */
1048 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1049 id->driver_data < ARRAY_SIZE(cardbus_type)) {
1050 socket->type = &cardbus_type[id->driver_data];
1052 ret = socket->type->override(socket);
1057 /* We must finish initialization here */
1059 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
1060 /* No IRQ or request_irq failed. Poll */
1061 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1062 init_timer(&socket->poll_timer);
1063 socket->poll_timer.function = yenta_interrupt_wrapper;
1064 socket->poll_timer.data = (unsigned long)socket;
1065 socket->poll_timer.expires = jiffies + HZ;
1066 add_timer(&socket->poll_timer);
1067 printk(KERN_INFO "Yenta: no PCI IRQ, CardBus support disabled for this socket.\n"
1068 KERN_INFO "Yenta: check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
1070 socket->socket.features |= SS_CAP_CARDBUS;
1073 /* Figure out what the dang thing can do for the PCMCIA layer... */
1074 yenta_interrogate(socket);
1075 yenta_get_socket_capabilities(socket, isa_interrupts);
1076 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1078 /* Register it with the pcmcia layer.. */
1079 ret = pcmcia_register_socket(&socket->socket);
1084 iounmap(socket->base);
1086 pci_release_regions(dev);
1088 pci_disable_device(dev);
1096 static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
1098 struct yenta_socket *socket = pci_get_drvdata(dev);
1101 ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1104 if (socket->type && socket->type->save_state)
1105 socket->type->save_state(socket);
1107 /* FIXME: pci_save_state needs to have a better interface */
1108 pci_save_state(dev);
1109 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
1110 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
1111 pci_disable_device(dev);
1114 * Some laptops (IBM T22) do not like us putting the Cardbus
1115 * bridge into D3. At a guess, some other laptop will
1116 * probably require this, so leave it commented out for now.
1118 /* pci_set_power_state(dev, 3); */
1125 static int yenta_dev_resume (struct pci_dev *dev)
1127 struct yenta_socket *socket = pci_get_drvdata(dev);
1130 pci_set_power_state(dev, 0);
1131 /* FIXME: pci_restore_state needs to have a better interface */
1132 pci_restore_state(dev);
1133 pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
1134 pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
1135 pci_enable_device(dev);
1136 pci_set_master(dev);
1138 if (socket->type && socket->type->restore_state)
1139 socket->type->restore_state(socket);
1142 return pcmcia_socket_dev_resume(&dev->dev);
1146 #define CB_ID(vend,dev,type) \
1150 .subvendor = PCI_ANY_ID, \
1151 .subdevice = PCI_ANY_ID, \
1152 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1154 .driver_data = CARDBUS_TYPE_##type, \
1157 static struct pci_device_id yenta_table [] = {
1158 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1161 * TBD: Check if these TI variants can use more
1162 * advanced overrides instead. (I can't get the
1163 * data sheets for these devices. --rmk)
1165 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1167 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1168 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1170 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1171 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1172 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1173 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1174 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1175 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1176 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1177 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1178 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1179 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1180 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1181 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1182 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1183 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1184 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1185 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1186 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1188 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1189 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1191 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
1192 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
1193 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
1194 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
1196 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1197 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1198 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1199 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1200 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1202 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1203 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1205 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1207 /* match any cardbus bridge */
1208 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1209 { /* all zeroes */ }
1211 MODULE_DEVICE_TABLE(pci, yenta_table);
1214 static struct pci_driver yenta_cardbus_driver = {
1215 .name = "yenta_cardbus",
1216 .id_table = yenta_table,
1217 .probe = yenta_probe,
1218 .remove = __devexit_p(yenta_close),
1219 .suspend = yenta_dev_suspend,
1220 .resume = yenta_dev_resume,
1224 static int __init yenta_socket_init(void)
1226 return pci_register_driver (¥ta_cardbus_driver);
1230 static void __exit yenta_socket_exit (void)
1232 pci_unregister_driver (¥ta_cardbus_driver);
1236 module_init(yenta_socket_init);
1237 module_exit(yenta_socket_exit);
1239 MODULE_LICENSE("GPL");