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);
75 readl(socket->base + reg); /* avoid problems with PCI write posting */
78 static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
81 pci_read_config_byte(socket->dev, offset, &val);
82 debug("%p %04x %02x\n", socket, offset, val);
86 static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
89 pci_read_config_word(socket->dev, offset, &val);
90 debug("%p %04x %04x\n", socket, offset, val);
94 static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
97 pci_read_config_dword(socket->dev, offset, &val);
98 debug("%p %04x %08x\n", socket, offset, val);
102 static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
104 debug("%p %04x %02x\n", socket, offset, val);
105 pci_write_config_byte(socket->dev, offset, val);
108 static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
110 debug("%p %04x %04x\n", socket, offset, val);
111 pci_write_config_word(socket->dev, offset, val);
114 static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
116 debug("%p %04x %08x\n", socket, offset, val);
117 pci_write_config_dword(socket->dev, offset, val);
120 static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
122 u8 val = readb(socket->base + 0x800 + reg);
123 debug("%p %04x %02x\n", socket, reg, val);
127 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
130 val = readb(socket->base + 0x800 + reg);
131 val |= readb(socket->base + 0x800 + reg + 1) << 8;
132 debug("%p %04x %04x\n", socket, reg, val);
136 static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
138 debug("%p %04x %02x\n", socket, reg, val);
139 writeb(val, socket->base + 0x800 + reg);
140 readb(socket->base + 0x800 + reg); /* PCI write posting... */
143 static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
145 debug("%p %04x %04x\n", socket, reg, val);
146 writeb(val, socket->base + 0x800 + reg);
147 writeb(val >> 8, socket->base + 0x800 + reg + 1);
149 /* PCI write posting... */
150 readb(socket->base + 0x800 + reg);
151 readb(socket->base + 0x800 + reg + 1);
154 static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
156 struct pci_dev *dev = to_pci_dev(yentadev);
157 struct yenta_socket *socket = pci_get_drvdata(dev);
160 offset = snprintf(buf, PAGE_SIZE, "CB registers:");
161 for (i = 0; i < 0x24; i += 4) {
164 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
165 val = cb_readl(socket, i);
166 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
169 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
170 for (i = 0; i < 0x45; i++) {
174 memcpy(buf + offset, " -", 2);
177 offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
179 val = exca_readb(socket, i);
180 offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
182 buf[offset++] = '\n';
186 static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
189 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
190 * on what kind of card is inserted..
192 static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
194 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
196 u32 state = cb_readl(socket, CB_SOCKET_STATE);
198 val = (state & CB_3VCARD) ? SS_3VCARD : 0;
199 val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
200 val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
201 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
204 if (state & CB_CBCARD) {
206 val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
207 val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
208 val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
209 } else if (state & CB_16BITCARD) {
210 u8 status = exca_readb(socket, I365_STATUS);
211 val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
212 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
213 val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
215 val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
216 val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
218 val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
219 val |= (status & I365_CS_READY) ? SS_READY : 0;
220 val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
227 static void yenta_get_power(struct yenta_socket *socket, socket_state_t *state)
229 if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
230 (socket->flags & YENTA_16BIT_POWER_EXCA)) {
233 reg = exca_readb(socket, I365_POWER);
234 vcc = reg & I365_VCC_MASK;
235 vpp = reg & I365_VPP1_MASK;
236 state->Vcc = state->Vpp = 0;
238 if (socket->flags & YENTA_16BIT_POWER_DF) {
239 if (vcc == I365_VCC_3V)
241 if (vcc == I365_VCC_5V)
243 if (vpp == I365_VPP1_5V)
244 state->Vpp = state->Vcc;
245 if (vpp == I365_VPP1_12V)
248 if (reg & I365_VCC_5V) {
250 if (vpp == I365_VPP1_5V)
252 if (vpp == I365_VPP1_12V)
259 control = cb_readl(socket, CB_SOCKET_CONTROL);
261 switch (control & CB_SC_VCC_MASK) {
262 case CB_SC_VCC_5V: state->Vcc = 50; break;
263 case CB_SC_VCC_3V: state->Vcc = 33; break;
264 default: state->Vcc = 0;
267 switch (control & CB_SC_VPP_MASK) {
268 case CB_SC_VPP_12V: state->Vpp = 120; break;
269 case CB_SC_VPP_5V: state->Vpp = 50; break;
270 case CB_SC_VPP_3V: state->Vpp = 33; break;
271 default: state->Vpp = 0;
276 static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
278 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
282 control = cb_readl(socket, CB_SOCKET_CONTROL);
284 yenta_get_power(socket, state);
285 state->io_irq = socket->io_irq;
287 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
288 u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
289 if (bridge & CB_BRIDGE_CRST)
290 state->flags |= SS_RESET;
294 /* 16-bit card state.. */
295 reg = exca_readb(socket, I365_POWER);
296 state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
297 state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
299 reg = exca_readb(socket, I365_INTCTL);
300 state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
301 state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
303 reg = exca_readb(socket, I365_CSCINT);
304 state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
305 if (state->flags & SS_IOCARD) {
306 state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
308 state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
309 state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
310 state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
316 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
318 /* some birdges require to use the ExCA registers to power 16bit cards */
319 if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
320 (socket->flags & YENTA_16BIT_POWER_EXCA)) {
322 reg = old = exca_readb(socket, I365_POWER);
323 reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
325 /* i82365SL-DF style */
326 if (socket->flags & YENTA_16BIT_POWER_DF) {
327 switch (state->Vcc) {
328 case 33: reg |= I365_VCC_3V; break;
329 case 50: reg |= I365_VCC_5V; break;
330 default: reg = 0; break;
332 switch (state->Vpp) {
334 case 50: reg |= I365_VPP1_5V; break;
335 case 120: reg |= I365_VPP1_12V; break;
338 /* i82365SL-B style */
339 switch (state->Vcc) {
340 case 50: reg |= I365_VCC_5V; break;
341 default: reg = 0; break;
343 switch (state->Vpp) {
344 case 50: reg |= I365_VPP1_5V | I365_VPP2_5V; break;
345 case 120: reg |= I365_VPP1_12V | I365_VPP2_12V; break;
350 exca_writeb(socket, I365_POWER, reg);
352 u32 reg = 0; /* CB_SC_STPCLK? */
353 switch (state->Vcc) {
354 case 33: reg = CB_SC_VCC_3V; break;
355 case 50: reg = CB_SC_VCC_5V; break;
356 default: reg = 0; break;
358 switch (state->Vpp) {
359 case 33: reg |= CB_SC_VPP_3V; break;
360 case 50: reg |= CB_SC_VPP_5V; break;
361 case 120: reg |= CB_SC_VPP_12V; break;
363 if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
364 cb_writel(socket, CB_SOCKET_CONTROL, reg);
368 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
370 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
373 yenta_set_power(socket, state);
374 socket->io_irq = state->io_irq;
375 bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
376 if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
378 bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
380 /* ISA interrupt control? */
381 intr = exca_readb(socket, I365_INTCTL);
382 intr = (intr & ~0xf);
383 if (!socket->cb_irq) {
384 intr |= state->io_irq;
385 bridge |= CB_BRIDGE_INTR;
387 exca_writeb(socket, I365_INTCTL, intr);
391 reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
392 reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
393 reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
394 if (state->io_irq != socket->cb_irq) {
395 reg |= state->io_irq;
396 bridge |= CB_BRIDGE_INTR;
398 exca_writeb(socket, I365_INTCTL, reg);
400 reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
401 reg |= I365_PWR_NORESET;
402 if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
403 if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
404 if (exca_readb(socket, I365_POWER) != reg)
405 exca_writeb(socket, I365_POWER, reg);
407 /* CSC interrupt: no ISA irq for CSC */
408 reg = I365_CSC_DETECT;
409 if (state->flags & SS_IOCARD) {
410 if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
412 if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
413 if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
414 if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
416 exca_writeb(socket, I365_CSCINT, reg);
417 exca_readb(socket, I365_CSC);
419 sock->zoom_video(sock, state->flags & SS_ZVCARD);
421 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
422 /* Socket event mask: get card insert/remove events.. */
423 cb_writel(socket, CB_SOCKET_EVENT, -1);
424 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
428 static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
430 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
432 unsigned char ioctl, addr, enable;
439 enable = I365_ENA_IO(map);
440 addr = exca_readb(socket, I365_ADDRWIN);
442 /* Disable the window before changing it.. */
445 exca_writeb(socket, I365_ADDRWIN, addr);
448 exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
449 exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
451 ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
452 if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
453 if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
454 if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
455 exca_writeb(socket, I365_IOCTL, ioctl);
457 if (io->flags & MAP_ACTIVE)
458 exca_writeb(socket, I365_ADDRWIN, addr | enable);
462 static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
464 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
465 struct pci_bus_region region;
467 unsigned char addr, enable;
468 unsigned int start, stop, card_start;
471 pcibios_resource_to_bus(socket->dev, ®ion, mem->res);
474 start = region.start;
476 card_start = mem->card_start;
478 if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
479 (card_start >> 26) || mem->speed > 1000)
482 enable = I365_ENA_MEM(map);
483 addr = exca_readb(socket, I365_ADDRWIN);
486 exca_writeb(socket, I365_ADDRWIN, addr);
489 exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
491 word = (start >> 12) & 0x0fff;
492 if (mem->flags & MAP_16BIT)
493 word |= I365_MEM_16BIT;
494 if (mem->flags & MAP_0WS)
495 word |= I365_MEM_0WS;
496 exca_writew(socket, I365_MEM(map) + I365_W_START, word);
498 word = (stop >> 12) & 0x0fff;
499 switch (to_cycles(mem->speed)) {
501 case 1: word |= I365_MEM_WS0; break;
502 case 2: word |= I365_MEM_WS1; break;
503 default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
505 exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
507 word = ((card_start - start) >> 12) & 0x3fff;
508 if (mem->flags & MAP_WRPROT)
509 word |= I365_MEM_WRPROT;
510 if (mem->flags & MAP_ATTRIB)
511 word |= I365_MEM_REG;
512 exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
514 if (mem->flags & MAP_ACTIVE)
515 exca_writeb(socket, I365_ADDRWIN, addr | enable);
521 static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
524 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
528 /* Clear interrupt status for the event */
529 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
530 cb_writel(socket, CB_SOCKET_EVENT, cb_event);
532 csc = exca_readb(socket, I365_CSC);
534 events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
535 events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
536 if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
537 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
539 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
540 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
541 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
545 pcmcia_parse_events(&socket->socket, events);
553 static void yenta_interrupt_wrapper(unsigned long data)
555 struct yenta_socket *socket = (struct yenta_socket *) data;
557 yenta_interrupt(0, (void *)socket, NULL);
558 socket->poll_timer.expires = jiffies + HZ;
559 add_timer(&socket->poll_timer);
562 static void yenta_clear_maps(struct yenta_socket *socket)
565 struct resource res = { .start = 0, .end = 0x0fff };
566 pccard_io_map io = { 0, 0, 0, 0, 1 };
567 pccard_mem_map mem = { .res = &res, };
569 yenta_set_socket(&socket->socket, &dead_socket);
570 for (i = 0; i < 2; i++) {
572 yenta_set_io_map(&socket->socket, &io);
574 for (i = 0; i < 5; i++) {
576 yenta_set_mem_map(&socket->socket, &mem);
580 /* redoes voltage interrogation if required */
581 static void yenta_interrogate(struct yenta_socket *socket)
585 state = cb_readl(socket, CB_SOCKET_STATE);
586 if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
587 (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
588 ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
589 cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
592 /* Called at resume and initialization events */
593 static int yenta_sock_init(struct pcmcia_socket *sock)
595 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
597 exca_writeb(socket, I365_GBLCTL, 0x00);
598 exca_writeb(socket, I365_GENCTL, 0x00);
600 /* Redo card voltage interrogation */
601 yenta_interrogate(socket);
603 yenta_clear_maps(socket);
605 if (socket->type && socket->type->sock_init)
606 socket->type->sock_init(socket);
608 /* Re-enable CSC interrupts */
609 cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
614 static int yenta_sock_suspend(struct pcmcia_socket *sock)
616 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
618 /* Disable CSC interrupts */
619 cb_writel(socket, CB_SOCKET_MASK, 0x0);
625 * Use an adaptive allocation for the memory resource,
626 * sometimes the memory behind pci bridges is limited:
627 * 1/8 of the size of the io window of the parent.
628 * max 4 MB, min 16 kB. We try very hard to not get below
629 * the "ACC" values, though.
631 #define BRIDGE_MEM_MAX 4*1024*1024
632 #define BRIDGE_MEM_ACC 128*1024
633 #define BRIDGE_MEM_MIN 16*1024
635 #define BRIDGE_IO_MAX 512
636 #define BRIDGE_IO_ACC 256
637 #define BRIDGE_IO_MIN 32
639 #ifndef PCIBIOS_MIN_CARDBUS_IO
640 #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
643 static int yenta_search_one_res(struct resource *root, struct resource *res,
646 u32 align, size, start, end;
648 if (res->flags & IORESOURCE_IO) {
650 size = BRIDGE_IO_MAX;
651 start = PCIBIOS_MIN_CARDBUS_IO;
654 unsigned long avail = root->end - root->start;
656 size = BRIDGE_MEM_MAX;
657 if (size > avail/8) {
659 /* round size down to next power of 2 */
661 while ((size /= 2) != 0)
668 start = PCIBIOS_MIN_MEM;
673 if (allocate_resource(root, res, size, start, end, align,
679 } while (size >= min);
685 static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
689 for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) {
690 struct resource * root = socket->dev->bus->resource[i];
694 if ((res->flags ^ root->flags) &
695 (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
696 continue; /* Wrong type */
698 if (yenta_search_one_res(root, res, min))
704 static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
706 struct resource *root, *res;
707 struct pci_bus_region region;
710 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
711 /* Already allocated? */
715 /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
717 if (type & IORESOURCE_IO)
720 res->name = socket->dev->subordinate->name;
723 region.start = config_readl(socket, addr_start) & mask;
724 region.end = config_readl(socket, addr_end) | ~mask;
725 if (region.start && region.end > region.start && !override_bios) {
726 pcibios_bus_to_resource(socket->dev, res, ®ion);
727 root = pci_find_parent_resource(socket->dev, res);
728 if (root && (request_resource(root, res) == 0))
730 printk(KERN_INFO "yenta %s: Preassigned resource %d busy or not available, reconfiguring...\n",
731 pci_name(socket->dev), nr);
734 if (type & IORESOURCE_IO) {
735 if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
736 (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
737 (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
740 if (type & IORESOURCE_PREFETCH) {
741 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
742 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
743 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
745 /* Approximating prefetchable by non-prefetchable */
746 res->flags = IORESOURCE_MEM;
748 if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
749 (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
750 (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
754 printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
755 pci_name(socket->dev), type);
756 res->start = res->end = res->flags = 0;
761 * Allocate the bridge mappings for the device..
763 static void yenta_allocate_resources(struct yenta_socket *socket)
766 program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
767 PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
768 program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
769 PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
770 program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
771 PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
772 program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
773 PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
775 pci_setup_cardbus(socket->dev->subordinate);
780 * Free the bridge mappings for the device..
782 static void yenta_free_resources(struct yenta_socket *socket)
786 struct resource *res;
787 res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
788 if (res->start != 0 && res->end != 0)
789 release_resource(res);
790 res->start = res->end = res->flags = 0;
796 * Close it down - release our resources and go home..
798 static void yenta_close(struct pci_dev *dev)
800 struct yenta_socket *sock = pci_get_drvdata(dev);
802 /* Remove the register attributes */
803 device_remove_file(&dev->dev, &dev_attr_yenta_registers);
805 /* we don't want a dying socket registered */
806 pcmcia_unregister_socket(&sock->socket);
808 /* Disable all events so we don't die in an IRQ storm */
809 cb_writel(sock, CB_SOCKET_MASK, 0x0);
810 exca_writeb(sock, I365_CSCINT, 0);
813 free_irq(sock->cb_irq, sock);
815 del_timer_sync(&sock->poll_timer);
819 yenta_free_resources(sock);
821 pci_release_regions(dev);
822 pci_disable_device(dev);
823 pci_set_drvdata(dev, NULL);
827 static struct pccard_operations yenta_socket_operations = {
828 .init = yenta_sock_init,
829 .suspend = yenta_sock_suspend,
830 .get_status = yenta_get_status,
831 .get_socket = yenta_get_socket,
832 .set_socket = yenta_set_socket,
833 .set_io_map = yenta_set_io_map,
834 .set_mem_map = yenta_set_mem_map,
844 CARDBUS_TYPE_DEFAULT = -1,
850 CARDBUS_TYPE_TOPIC95,
851 CARDBUS_TYPE_TOPIC97,
852 CARDBUS_TYPE_O2MICRO,
857 * Different cardbus controllers have slightly different
858 * initialization sequences etc details. List them here..
860 static struct cardbus_type cardbus_type[] = {
861 [CARDBUS_TYPE_TI] = {
862 .override = ti_override,
863 .save_state = ti_save_state,
864 .restore_state = ti_restore_state,
865 .sock_init = ti_init,
867 [CARDBUS_TYPE_TI113X] = {
868 .override = ti113x_override,
869 .save_state = ti_save_state,
870 .restore_state = ti_restore_state,
871 .sock_init = ti_init,
873 [CARDBUS_TYPE_TI12XX] = {
874 .override = ti12xx_override,
875 .save_state = ti_save_state,
876 .restore_state = ti_restore_state,
877 .sock_init = ti_init,
879 [CARDBUS_TYPE_TI1250] = {
880 .override = ti1250_override,
881 .save_state = ti_save_state,
882 .restore_state = ti_restore_state,
883 .sock_init = ti_init,
885 [CARDBUS_TYPE_RICOH] = {
886 .override = ricoh_override,
887 .save_state = ricoh_save_state,
888 .restore_state = ricoh_restore_state,
890 [CARDBUS_TYPE_TOPIC95] = {
891 .override = topic95_override,
893 [CARDBUS_TYPE_TOPIC97] = {
894 .override = topic97_override,
896 [CARDBUS_TYPE_O2MICRO] = {
897 .override = o2micro_override,
898 .restore_state = o2micro_restore_state,
900 [CARDBUS_TYPE_ENE] = {
901 .override = ene_override,
902 .save_state = ti_save_state,
903 .restore_state = ti_restore_state,
904 .sock_init = ti_init,
910 * Only probe "regular" interrupts, don't
911 * touch dangerous spots like the mouse irq,
912 * because there are mice that apparently
913 * get really confused if they get fondled
916 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
918 static u32 isa_interrupts = 0x0ef8;
920 static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
927 * Probe for usable interrupts using the force
928 * register to generate bogus card status events.
930 cb_writel(socket, CB_SOCKET_EVENT, -1);
931 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
932 exca_writeb(socket, I365_CSCINT, 0);
933 val = probe_irq_on() & isa_irq_mask;
934 for (i = 1; i < 16; i++) {
935 if (!((val >> i) & 1))
937 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
938 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
940 cb_writel(socket, CB_SOCKET_EVENT, -1);
942 cb_writel(socket, CB_SOCKET_MASK, 0);
943 exca_writeb(socket, I365_CSCINT, 0);
945 mask = probe_irq_mask(val) & 0xffff;
951 /* interrupt handler, only used during probing */
952 static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
954 struct yenta_socket *socket = (struct yenta_socket *) dev_id;
958 /* Clear interrupt status for the event */
959 cb_event = cb_readl(socket, CB_SOCKET_EVENT);
960 cb_writel(socket, CB_SOCKET_EVENT, -1);
961 csc = exca_readb(socket, I365_CSC);
963 if (cb_event || csc) {
964 socket->probe_status = 1;
971 /* probes the PCI interrupt, use only on override functions */
972 static int yenta_probe_cb_irq(struct yenta_socket *socket)
977 socket->probe_status = 0;
979 if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
980 printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
984 /* generate interrupt, wait */
985 exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
986 cb_writel(socket, CB_SOCKET_EVENT, -1);
987 cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
988 cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
992 /* disable interrupts */
993 cb_writel(socket, CB_SOCKET_MASK, 0);
994 exca_writeb(socket, I365_CSCINT, 0);
995 cb_writel(socket, CB_SOCKET_EVENT, -1);
996 exca_readb(socket, I365_CSC);
998 free_irq(socket->cb_irq, socket);
1000 return (int) socket->probe_status;
1006 * Set static data that doesn't need re-initializing..
1008 static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1010 socket->socket.pci_irq = socket->cb_irq;
1012 socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1014 socket->socket.irq_mask = 0;
1016 printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
1017 socket->socket.irq_mask, socket->cb_irq);
1021 * Initialize the standard cardbus registers
1023 static void yenta_config_init(struct yenta_socket *socket)
1026 struct pci_dev *dev = socket->dev;
1027 struct pci_bus_region region;
1029 pcibios_resource_to_bus(socket->dev, ®ion, &dev->resource[0]);
1031 config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1032 config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1033 config_writew(socket, PCI_COMMAND,
1035 PCI_COMMAND_MEMORY |
1036 PCI_COMMAND_MASTER |
1039 /* MAGIC NUMBERS! Fixme */
1040 config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1041 config_writeb(socket, PCI_LATENCY_TIMER, 168);
1042 config_writel(socket, PCI_PRIMARY_BUS,
1043 (176 << 24) | /* sec. latency timer */
1044 (dev->subordinate->subordinate << 16) | /* subordinate bus */
1045 (dev->subordinate->secondary << 8) | /* secondary bus */
1046 dev->subordinate->primary); /* primary bus */
1049 * Set up the bridging state:
1050 * - enable write posting.
1051 * - memory window 0 prefetchable, window 1 non-prefetchable
1052 * - PCI interrupts enabled if a PCI interrupt exists..
1054 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1055 bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1056 bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1057 config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1061 * Initialize a cardbus controller. Make sure we have a usable
1062 * interrupt, and that we can map the cardbus area. Fill in the
1063 * socket information structure..
1065 static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
1067 struct yenta_socket *socket;
1071 * If we failed to assign proper bus numbers for this cardbus
1072 * controller during PCI probe, its subordinate pci_bus is NULL.
1075 if (!dev->subordinate) {
1076 printk(KERN_ERR "Yenta: no bus associated with %s! "
1077 "(try 'pci=assign-busses')\n", pci_name(dev));
1081 socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1084 memset(socket, 0, sizeof(*socket));
1086 /* prepare pcmcia_socket */
1087 socket->socket.ops = ¥ta_socket_operations;
1088 socket->socket.resource_ops = &pccard_nonstatic_ops;
1089 socket->socket.dev.dev = &dev->dev;
1090 socket->socket.driver_data = socket;
1091 socket->socket.owner = THIS_MODULE;
1092 socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1093 socket->socket.map_size = 0x1000;
1094 socket->socket.cb_dev = dev;
1096 /* prepare struct yenta_socket */
1098 pci_set_drvdata(dev, socket);
1101 * Do some basic sanity checking..
1103 if (pci_enable_device(dev)) {
1108 ret = pci_request_regions(dev, "yenta_socket");
1112 if (!pci_resource_start(dev, 0)) {
1113 printk(KERN_ERR "No cardbus resource!\n");
1119 * Ok, start setup.. Map the cardbus registers,
1120 * and request the IRQ.
1122 socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1123 if (!socket->base) {
1129 * report the subsystem vendor and device for help debugging
1132 printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
1133 pci_name(dev), dev->subsystem_vendor, dev->subsystem_device);
1135 yenta_config_init(socket);
1137 /* Disable all events */
1138 cb_writel(socket, CB_SOCKET_MASK, 0x0);
1140 /* Set up the bridge regions.. */
1141 yenta_allocate_resources(socket);
1143 socket->cb_irq = dev->irq;
1145 /* Do we have special options for the device? */
1146 if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1147 id->driver_data < ARRAY_SIZE(cardbus_type)) {
1148 socket->type = &cardbus_type[id->driver_data];
1150 ret = socket->type->override(socket);
1155 /* We must finish initialization here */
1157 if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
1158 /* No IRQ or request_irq failed. Poll */
1159 socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1160 init_timer(&socket->poll_timer);
1161 socket->poll_timer.function = yenta_interrupt_wrapper;
1162 socket->poll_timer.data = (unsigned long)socket;
1163 socket->poll_timer.expires = jiffies + HZ;
1164 add_timer(&socket->poll_timer);
1165 printk(KERN_INFO "Yenta: no PCI IRQ, CardBus support disabled for this socket.\n"
1166 KERN_INFO "Yenta: check your BIOS CardBus, BIOS IRQ or ACPI settings.\n");
1168 socket->socket.features |= SS_CAP_CARDBUS;
1171 /* Figure out what the dang thing can do for the PCMCIA layer... */
1172 yenta_interrogate(socket);
1173 yenta_get_socket_capabilities(socket, isa_interrupts);
1174 printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1176 /* Register it with the pcmcia layer.. */
1177 ret = pcmcia_register_socket(&socket->socket);
1179 /* Add the yenta register attributes */
1180 device_create_file(&dev->dev, &dev_attr_yenta_registers);
1185 iounmap(socket->base);
1187 pci_release_regions(dev);
1189 pci_disable_device(dev);
1197 static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
1199 struct yenta_socket *socket = pci_get_drvdata(dev);
1202 ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1205 if (socket->type && socket->type->save_state)
1206 socket->type->save_state(socket);
1208 /* FIXME: pci_save_state needs to have a better interface */
1209 pci_save_state(dev);
1210 pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
1211 pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
1212 pci_disable_device(dev);
1215 * Some laptops (IBM T22) do not like us putting the Cardbus
1216 * bridge into D3. At a guess, some other laptop will
1217 * probably require this, so leave it commented out for now.
1219 /* pci_set_power_state(dev, 3); */
1226 static int yenta_dev_resume (struct pci_dev *dev)
1228 struct yenta_socket *socket = pci_get_drvdata(dev);
1231 pci_set_power_state(dev, 0);
1232 /* FIXME: pci_restore_state needs to have a better interface */
1233 pci_restore_state(dev);
1234 pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
1235 pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
1236 pci_enable_device(dev);
1237 pci_set_master(dev);
1239 if (socket->type && socket->type->restore_state)
1240 socket->type->restore_state(socket);
1243 return pcmcia_socket_dev_resume(&dev->dev);
1247 #define CB_ID(vend,dev,type) \
1251 .subvendor = PCI_ANY_ID, \
1252 .subdevice = PCI_ANY_ID, \
1253 .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1255 .driver_data = CARDBUS_TYPE_##type, \
1258 static struct pci_device_id yenta_table [] = {
1259 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1262 * TBD: Check if these TI variants can use more
1263 * advanced overrides instead. (I can't get the
1264 * data sheets for these devices. --rmk)
1266 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1268 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1269 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1271 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1272 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1273 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1274 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1275 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1276 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1277 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1278 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1279 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1280 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1281 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1282 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1283 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1284 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1285 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1286 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1287 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1289 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1290 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1292 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1293 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1294 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1295 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1296 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1297 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1298 CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1300 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, TI12XX),
1301 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, TI12XX),
1302 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, TI12XX),
1303 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, TI12XX),
1304 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1305 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1306 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1307 CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1309 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1310 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1311 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1312 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1313 CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1315 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1316 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1317 CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1319 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1321 /* match any cardbus bridge */
1322 CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1323 { /* all zeroes */ }
1325 MODULE_DEVICE_TABLE(pci, yenta_table);
1328 static struct pci_driver yenta_cardbus_driver = {
1329 .name = "yenta_cardbus",
1330 .id_table = yenta_table,
1331 .probe = yenta_probe,
1332 .remove = __devexit_p(yenta_close),
1333 .suspend = yenta_dev_suspend,
1334 .resume = yenta_dev_resume,
1338 static int __init yenta_socket_init(void)
1340 return pci_register_driver (¥ta_cardbus_driver);
1344 static void __exit yenta_socket_exit (void)
1346 pci_unregister_driver (¥ta_cardbus_driver);
1350 module_init(yenta_socket_init);
1351 module_exit(yenta_socket_exit);
1353 MODULE_LICENSE("GPL");