1/*
2 * Regular cardbus driver ("yenta_socket")
3 *
4 * (C) Copyright 1999, 2000 Linus Torvalds
5 *
6 * Changelog:
7 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
8 * 	Dynamically adjust the size of the bridge resource
9 *
10 * May 2003: Dominik Brodowski <linux@brodo.de>
11 * 	Merge pci_socket.c and yenta.c into one file
12 */
13#include <linux/init.h>
14#include <linux/pci.h>
15#include <linux/workqueue.h>
16#include <linux/interrupt.h>
17#include <linux/delay.h>
18#include <linux/module.h>
19#include <linux/io.h>
20#include <linux/slab.h>
21
22#include <pcmcia/ss.h>
23
24#include "yenta_socket.h"
25#include "i82365.h"
26
27static bool disable_clkrun;
28module_param(disable_clkrun, bool, 0444);
29MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
30
31static bool isa_probe = 1;
32module_param(isa_probe, bool, 0444);
33MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
34
35static bool pwr_irqs_off;
36module_param(pwr_irqs_off, bool, 0644);
37MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
38
39static char o2_speedup[] = "default";
40module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
41MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
42	"or 'default' (uses recommended behaviour for the detected bridge)");
43
44/*
45 * Only probe "regular" interrupts, don't
46 * touch dangerous spots like the mouse irq,
47 * because there are mice that apparently
48 * get really confused if they get fondled
49 * too intimately.
50 *
51 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
52 */
53static u32 isa_interrupts = 0x0ef8;
54
55
56#define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
57
58/* Don't ask.. */
59#define to_cycles(ns)	((ns)/120)
60#define to_ns(cycles)	((cycles)*120)
61
62/*
63 * yenta PCI irq probing.
64 * currently only used in the TI/EnE initialization code
65 */
66#ifdef CONFIG_YENTA_TI
67static int yenta_probe_cb_irq(struct yenta_socket *socket);
68static unsigned int yenta_probe_irq(struct yenta_socket *socket,
69				u32 isa_irq_mask);
70#endif
71
72
73static unsigned int override_bios;
74module_param(override_bios, uint, 0000);
75MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
76
77/*
78 * Generate easy-to-use ways of reading a cardbus sockets
79 * regular memory space ("cb_xxx"), configuration space
80 * ("config_xxx") and compatibility space ("exca_xxxx")
81 */
82static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
83{
84	u32 val = readl(socket->base + reg);
85	debug("%04x %08x\n", socket, reg, val);
86	return val;
87}
88
89static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
90{
91	debug("%04x %08x\n", socket, reg, val);
92	writel(val, socket->base + reg);
93	readl(socket->base + reg); /* avoid problems with PCI write posting */
94}
95
96static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
97{
98	u8 val;
99	pci_read_config_byte(socket->dev, offset, &val);
100	debug("%04x %02x\n", socket, offset, val);
101	return val;
102}
103
104static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
105{
106	u16 val;
107	pci_read_config_word(socket->dev, offset, &val);
108	debug("%04x %04x\n", socket, offset, val);
109	return val;
110}
111
112static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
113{
114	u32 val;
115	pci_read_config_dword(socket->dev, offset, &val);
116	debug("%04x %08x\n", socket, offset, val);
117	return val;
118}
119
120static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
121{
122	debug("%04x %02x\n", socket, offset, val);
123	pci_write_config_byte(socket->dev, offset, val);
124}
125
126static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
127{
128	debug("%04x %04x\n", socket, offset, val);
129	pci_write_config_word(socket->dev, offset, val);
130}
131
132static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
133{
134	debug("%04x %08x\n", socket, offset, val);
135	pci_write_config_dword(socket->dev, offset, val);
136}
137
138static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
139{
140	u8 val = readb(socket->base + 0x800 + reg);
141	debug("%04x %02x\n", socket, reg, val);
142	return val;
143}
144
145static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
146{
147	u16 val;
148	val = readb(socket->base + 0x800 + reg);
149	val |= readb(socket->base + 0x800 + reg + 1) << 8;
150	debug("%04x %04x\n", socket, reg, val);
151	return val;
152}
153
154static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
155{
156	debug("%04x %02x\n", socket, reg, val);
157	writeb(val, socket->base + 0x800 + reg);
158	readb(socket->base + 0x800 + reg); /* PCI write posting... */
159}
160
161static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
162{
163	debug("%04x %04x\n", socket, reg, val);
164	writeb(val, socket->base + 0x800 + reg);
165	writeb(val >> 8, socket->base + 0x800 + reg + 1);
166
167	/* PCI write posting... */
168	readb(socket->base + 0x800 + reg);
169	readb(socket->base + 0x800 + reg + 1);
170}
171
172static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
173{
174	struct pci_dev *dev = to_pci_dev(yentadev);
175	struct yenta_socket *socket = pci_get_drvdata(dev);
176	int offset = 0, i;
177
178	offset = snprintf(buf, PAGE_SIZE, "CB registers:");
179	for (i = 0; i < 0x24; i += 4) {
180		unsigned val;
181		if (!(i & 15))
182			offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
183		val = cb_readl(socket, i);
184		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
185	}
186
187	offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
188	for (i = 0; i < 0x45; i++) {
189		unsigned char val;
190		if (!(i & 7)) {
191			if (i & 8) {
192				memcpy(buf + offset, " -", 2);
193				offset += 2;
194			} else
195				offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
196		}
197		val = exca_readb(socket, i);
198		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
199	}
200	buf[offset++] = '\n';
201	return offset;
202}
203
204static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
205
206/*
207 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
208 * on what kind of card is inserted..
209 */
210static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
211{
212	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
213	unsigned int val;
214	u32 state = cb_readl(socket, CB_SOCKET_STATE);
215
216	val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
217	val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
218	val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
219	val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
220
221
222	if (state & CB_CBCARD) {
223		val |= SS_CARDBUS;
224		val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
225		val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
226		val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
227	} else if (state & CB_16BITCARD) {
228		u8 status = exca_readb(socket, I365_STATUS);
229		val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
230		if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
231			val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
232		} else {
233			val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
234			val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
235		}
236		val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
237		val |= (status & I365_CS_READY) ? SS_READY : 0;
238		val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
239	}
240
241	*value = val;
242	return 0;
243}
244
245static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
246{
247	/* some birdges require to use the ExCA registers to power 16bit cards */
248	if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
249	    (socket->flags & YENTA_16BIT_POWER_EXCA)) {
250		u8 reg, old;
251		reg = old = exca_readb(socket, I365_POWER);
252		reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
253
254		/* i82365SL-DF style */
255		if (socket->flags & YENTA_16BIT_POWER_DF) {
256			switch (state->Vcc) {
257			case 33:
258				reg |= I365_VCC_3V;
259				break;
260			case 50:
261				reg |= I365_VCC_5V;
262				break;
263			default:
264				reg = 0;
265				break;
266			}
267			switch (state->Vpp) {
268			case 33:
269			case 50:
270				reg |= I365_VPP1_5V;
271				break;
272			case 120:
273				reg |= I365_VPP1_12V;
274				break;
275			}
276		} else {
277			/* i82365SL-B style */
278			switch (state->Vcc) {
279			case 50:
280				reg |= I365_VCC_5V;
281				break;
282			default:
283				reg = 0;
284				break;
285			}
286			switch (state->Vpp) {
287			case 50:
288				reg |= I365_VPP1_5V | I365_VPP2_5V;
289				break;
290			case 120:
291				reg |= I365_VPP1_12V | I365_VPP2_12V;
292				break;
293			}
294		}
295
296		if (reg != old)
297			exca_writeb(socket, I365_POWER, reg);
298	} else {
299		u32 reg = 0;	/* CB_SC_STPCLK? */
300		switch (state->Vcc) {
301		case 33:
302			reg = CB_SC_VCC_3V;
303			break;
304		case 50:
305			reg = CB_SC_VCC_5V;
306			break;
307		default:
308			reg = 0;
309			break;
310		}
311		switch (state->Vpp) {
312		case 33:
313			reg |= CB_SC_VPP_3V;
314			break;
315		case 50:
316			reg |= CB_SC_VPP_5V;
317			break;
318		case 120:
319			reg |= CB_SC_VPP_12V;
320			break;
321		}
322		if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
323			cb_writel(socket, CB_SOCKET_CONTROL, reg);
324	}
325}
326
327static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
328{
329	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
330	u16 bridge;
331
332	/* if powering down: do it immediately */
333	if (state->Vcc == 0)
334		yenta_set_power(socket, state);
335
336	socket->io_irq = state->io_irq;
337	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
338	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
339		u8 intr;
340		bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
341
342		/* ISA interrupt control? */
343		intr = exca_readb(socket, I365_INTCTL);
344		intr = (intr & ~0xf);
345		if (!socket->dev->irq) {
346			intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
347			bridge |= CB_BRIDGE_INTR;
348		}
349		exca_writeb(socket, I365_INTCTL, intr);
350	}  else {
351		u8 reg;
352
353		reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
354		reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
355		reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
356		if (state->io_irq != socket->dev->irq) {
357			reg |= state->io_irq;
358			bridge |= CB_BRIDGE_INTR;
359		}
360		exca_writeb(socket, I365_INTCTL, reg);
361
362		reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
363		reg |= I365_PWR_NORESET;
364		if (state->flags & SS_PWR_AUTO)
365			reg |= I365_PWR_AUTO;
366		if (state->flags & SS_OUTPUT_ENA)
367			reg |= I365_PWR_OUT;
368		if (exca_readb(socket, I365_POWER) != reg)
369			exca_writeb(socket, I365_POWER, reg);
370
371		/* CSC interrupt: no ISA irq for CSC */
372		reg = exca_readb(socket, I365_CSCINT);
373		reg &= I365_CSC_IRQ_MASK;
374		reg |= I365_CSC_DETECT;
375		if (state->flags & SS_IOCARD) {
376			if (state->csc_mask & SS_STSCHG)
377				reg |= I365_CSC_STSCHG;
378		} else {
379			if (state->csc_mask & SS_BATDEAD)
380				reg |= I365_CSC_BVD1;
381			if (state->csc_mask & SS_BATWARN)
382				reg |= I365_CSC_BVD2;
383			if (state->csc_mask & SS_READY)
384				reg |= I365_CSC_READY;
385		}
386		exca_writeb(socket, I365_CSCINT, reg);
387		exca_readb(socket, I365_CSC);
388		if (sock->zoom_video)
389			sock->zoom_video(sock, state->flags & SS_ZVCARD);
390	}
391	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
392	/* Socket event mask: get card insert/remove events.. */
393	cb_writel(socket, CB_SOCKET_EVENT, -1);
394	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
395
396	/* if powering up: do it as the last step when the socket is configured */
397	if (state->Vcc != 0)
398		yenta_set_power(socket, state);
399	return 0;
400}
401
402static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
403{
404	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
405	int map;
406	unsigned char ioctl, addr, enable;
407
408	map = io->map;
409
410	if (map > 1)
411		return -EINVAL;
412
413	enable = I365_ENA_IO(map);
414	addr = exca_readb(socket, I365_ADDRWIN);
415
416	/* Disable the window before changing it.. */
417	if (addr & enable) {
418		addr &= ~enable;
419		exca_writeb(socket, I365_ADDRWIN, addr);
420	}
421
422	exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
423	exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
424
425	ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
426	if (io->flags & MAP_0WS)
427		ioctl |= I365_IOCTL_0WS(map);
428	if (io->flags & MAP_16BIT)
429		ioctl |= I365_IOCTL_16BIT(map);
430	if (io->flags & MAP_AUTOSZ)
431		ioctl |= I365_IOCTL_IOCS16(map);
432	exca_writeb(socket, I365_IOCTL, ioctl);
433
434	if (io->flags & MAP_ACTIVE)
435		exca_writeb(socket, I365_ADDRWIN, addr | enable);
436	return 0;
437}
438
439static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
440{
441	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
442	struct pci_bus_region region;
443	int map;
444	unsigned char addr, enable;
445	unsigned int start, stop, card_start;
446	unsigned short word;
447
448	pcibios_resource_to_bus(socket->dev->bus, &region, mem->res);
449
450	map = mem->map;
451	start = region.start;
452	stop = region.end;
453	card_start = mem->card_start;
454
455	if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
456	    (card_start >> 26) || mem->speed > 1000)
457		return -EINVAL;
458
459	enable = I365_ENA_MEM(map);
460	addr = exca_readb(socket, I365_ADDRWIN);
461	if (addr & enable) {
462		addr &= ~enable;
463		exca_writeb(socket, I365_ADDRWIN, addr);
464	}
465
466	exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
467
468	word = (start >> 12) & 0x0fff;
469	if (mem->flags & MAP_16BIT)
470		word |= I365_MEM_16BIT;
471	if (mem->flags & MAP_0WS)
472		word |= I365_MEM_0WS;
473	exca_writew(socket, I365_MEM(map) + I365_W_START, word);
474
475	word = (stop >> 12) & 0x0fff;
476	switch (to_cycles(mem->speed)) {
477	case 0:
478		break;
479	case 1:
480		word |= I365_MEM_WS0;
481		break;
482	case 2:
483		word |= I365_MEM_WS1;
484		break;
485	default:
486		word |= I365_MEM_WS1 | I365_MEM_WS0;
487		break;
488	}
489	exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
490
491	word = ((card_start - start) >> 12) & 0x3fff;
492	if (mem->flags & MAP_WRPROT)
493		word |= I365_MEM_WRPROT;
494	if (mem->flags & MAP_ATTRIB)
495		word |= I365_MEM_REG;
496	exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
497
498	if (mem->flags & MAP_ACTIVE)
499		exca_writeb(socket, I365_ADDRWIN, addr | enable);
500	return 0;
501}
502
503
504
505static irqreturn_t yenta_interrupt(int irq, void *dev_id)
506{
507	unsigned int events;
508	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
509	u8 csc;
510	u32 cb_event;
511
512	/* Clear interrupt status for the event */
513	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
514	cb_writel(socket, CB_SOCKET_EVENT, cb_event);
515
516	csc = exca_readb(socket, I365_CSC);
517
518	if (!(cb_event || csc))
519		return IRQ_NONE;
520
521	events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
522	events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
523	if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
524		events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
525	} else {
526		events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
527		events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
528		events |= (csc & I365_CSC_READY) ? SS_READY : 0;
529	}
530
531	if (events)
532		pcmcia_parse_events(&socket->socket, events);
533
534	return IRQ_HANDLED;
535}
536
537static void yenta_interrupt_wrapper(unsigned long data)
538{
539	struct yenta_socket *socket = (struct yenta_socket *) data;
540
541	yenta_interrupt(0, (void *)socket);
542	socket->poll_timer.expires = jiffies + HZ;
543	add_timer(&socket->poll_timer);
544}
545
546static void yenta_clear_maps(struct yenta_socket *socket)
547{
548	int i;
549	struct resource res = { .start = 0, .end = 0x0fff };
550	pccard_io_map io = { 0, 0, 0, 0, 1 };
551	pccard_mem_map mem = { .res = &res, };
552
553	yenta_set_socket(&socket->socket, &dead_socket);
554	for (i = 0; i < 2; i++) {
555		io.map = i;
556		yenta_set_io_map(&socket->socket, &io);
557	}
558	for (i = 0; i < 5; i++) {
559		mem.map = i;
560		yenta_set_mem_map(&socket->socket, &mem);
561	}
562}
563
564/* redoes voltage interrogation if required */
565static void yenta_interrogate(struct yenta_socket *socket)
566{
567	u32 state;
568
569	state = cb_readl(socket, CB_SOCKET_STATE);
570	if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
571	    (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
572	    ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
573		cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
574}
575
576/* Called at resume and initialization events */
577static int yenta_sock_init(struct pcmcia_socket *sock)
578{
579	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
580
581	exca_writeb(socket, I365_GBLCTL, 0x00);
582	exca_writeb(socket, I365_GENCTL, 0x00);
583
584	/* Redo card voltage interrogation */
585	yenta_interrogate(socket);
586
587	yenta_clear_maps(socket);
588
589	if (socket->type && socket->type->sock_init)
590		socket->type->sock_init(socket);
591
592	/* Re-enable CSC interrupts */
593	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
594
595	return 0;
596}
597
598static int yenta_sock_suspend(struct pcmcia_socket *sock)
599{
600	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
601
602	/* Disable CSC interrupts */
603	cb_writel(socket, CB_SOCKET_MASK, 0x0);
604
605	return 0;
606}
607
608/*
609 * Use an adaptive allocation for the memory resource,
610 * sometimes the memory behind pci bridges is limited:
611 * 1/8 of the size of the io window of the parent.
612 * max 4 MB, min 16 kB. We try very hard to not get below
613 * the "ACC" values, though.
614 */
615#define BRIDGE_MEM_MAX (4*1024*1024)
616#define BRIDGE_MEM_ACC (128*1024)
617#define BRIDGE_MEM_MIN (16*1024)
618
619#define BRIDGE_IO_MAX 512
620#define BRIDGE_IO_ACC 256
621#define BRIDGE_IO_MIN 32
622
623#ifndef PCIBIOS_MIN_CARDBUS_IO
624#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
625#endif
626
627static int yenta_search_one_res(struct resource *root, struct resource *res,
628				u32 min)
629{
630	u32 align, size, start, end;
631
632	if (res->flags & IORESOURCE_IO) {
633		align = 1024;
634		size = BRIDGE_IO_MAX;
635		start = PCIBIOS_MIN_CARDBUS_IO;
636		end = ~0U;
637	} else {
638		unsigned long avail = root->end - root->start;
639		int i;
640		size = BRIDGE_MEM_MAX;
641		if (size > avail/8) {
642			size = (avail+1)/8;
643			/* round size down to next power of 2 */
644			i = 0;
645			while ((size /= 2) != 0)
646				i++;
647			size = 1 << i;
648		}
649		if (size < min)
650			size = min;
651		align = size;
652		start = PCIBIOS_MIN_MEM;
653		end = ~0U;
654	}
655
656	do {
657		if (allocate_resource(root, res, size, start, end, align,
658				      NULL, NULL) == 0) {
659			return 1;
660		}
661		size = size/2;
662		align = size;
663	} while (size >= min);
664
665	return 0;
666}
667
668
669static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
670			    u32 min)
671{
672	struct resource *root;
673	int i;
674
675	pci_bus_for_each_resource(socket->dev->bus, root, i) {
676		if (!root)
677			continue;
678
679		if ((res->flags ^ root->flags) &
680		    (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
681			continue; /* Wrong type */
682
683		if (yenta_search_one_res(root, res, min))
684			return 1;
685	}
686	return 0;
687}
688
689static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
690{
691	struct pci_dev *dev = socket->dev;
692	struct resource *res;
693	struct pci_bus_region region;
694	unsigned mask;
695
696	res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
697	/* Already allocated? */
698	if (res->parent)
699		return 0;
700
701	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
702	mask = ~0xfff;
703	if (type & IORESOURCE_IO)
704		mask = ~3;
705
706	res->name = dev->subordinate->name;
707	res->flags = type;
708
709	region.start = config_readl(socket, addr_start) & mask;
710	region.end = config_readl(socket, addr_end) | ~mask;
711	if (region.start && region.end > region.start && !override_bios) {
712		pcibios_bus_to_resource(dev->bus, res, &region);
713		if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
714			return 0;
715		dev_printk(KERN_INFO, &dev->dev,
716			   "Preassigned resource %d busy or not available, "
717			   "reconfiguring...\n",
718			   nr);
719	}
720
721	if (type & IORESOURCE_IO) {
722		if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
723		    (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
724		    (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
725			return 1;
726	} else {
727		if (type & IORESOURCE_PREFETCH) {
728			if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
729			    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
730			    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
731				return 1;
732			/* Approximating prefetchable by non-prefetchable */
733			res->flags = IORESOURCE_MEM;
734		}
735		if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
736		    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
737		    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
738			return 1;
739	}
740
741	dev_printk(KERN_INFO, &dev->dev,
742		   "no resource of type %x available, trying to continue...\n",
743		   type);
744	res->start = res->end = res->flags = 0;
745	return 0;
746}
747
748/*
749 * Allocate the bridge mappings for the device..
750 */
751static void yenta_allocate_resources(struct yenta_socket *socket)
752{
753	int program = 0;
754	program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
755			   PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
756	program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
757			   PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
758	program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
759			   PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
760	program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
761			   PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
762	if (program)
763		pci_setup_cardbus(socket->dev->subordinate);
764}
765
766
767/*
768 * Free the bridge mappings for the device..
769 */
770static void yenta_free_resources(struct yenta_socket *socket)
771{
772	int i;
773	for (i = 0; i < 4; i++) {
774		struct resource *res;
775		res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
776		if (res->start != 0 && res->end != 0)
777			release_resource(res);
778		res->start = res->end = res->flags = 0;
779	}
780}
781
782
783/*
784 * Close it down - release our resources and go home..
785 */
786static void yenta_close(struct pci_dev *dev)
787{
788	struct yenta_socket *sock = pci_get_drvdata(dev);
789
790	/* Remove the register attributes */
791	device_remove_file(&dev->dev, &dev_attr_yenta_registers);
792
793	/* we don't want a dying socket registered */
794	pcmcia_unregister_socket(&sock->socket);
795
796	/* Disable all events so we don't die in an IRQ storm */
797	cb_writel(sock, CB_SOCKET_MASK, 0x0);
798	exca_writeb(sock, I365_CSCINT, 0);
799
800	if (sock->cb_irq)
801		free_irq(sock->cb_irq, sock);
802	else
803		del_timer_sync(&sock->poll_timer);
804
805	if (sock->base)
806		iounmap(sock->base);
807	yenta_free_resources(sock);
808
809	pci_release_regions(dev);
810	pci_disable_device(dev);
811	pci_set_drvdata(dev, NULL);
812}
813
814
815static struct pccard_operations yenta_socket_operations = {
816	.init			= yenta_sock_init,
817	.suspend		= yenta_sock_suspend,
818	.get_status		= yenta_get_status,
819	.set_socket		= yenta_set_socket,
820	.set_io_map		= yenta_set_io_map,
821	.set_mem_map		= yenta_set_mem_map,
822};
823
824
825#ifdef CONFIG_YENTA_TI
826#include "ti113x.h"
827#endif
828#ifdef CONFIG_YENTA_RICOH
829#include "ricoh.h"
830#endif
831#ifdef CONFIG_YENTA_TOSHIBA
832#include "topic.h"
833#endif
834#ifdef CONFIG_YENTA_O2
835#include "o2micro.h"
836#endif
837
838enum {
839	CARDBUS_TYPE_DEFAULT = -1,
840	CARDBUS_TYPE_TI,
841	CARDBUS_TYPE_TI113X,
842	CARDBUS_TYPE_TI12XX,
843	CARDBUS_TYPE_TI1250,
844	CARDBUS_TYPE_RICOH,
845	CARDBUS_TYPE_TOPIC95,
846	CARDBUS_TYPE_TOPIC97,
847	CARDBUS_TYPE_O2MICRO,
848	CARDBUS_TYPE_ENE,
849};
850
851/*
852 * Different cardbus controllers have slightly different
853 * initialization sequences etc details. List them here..
854 */
855static struct cardbus_type cardbus_type[] = {
856#ifdef CONFIG_YENTA_TI
857	[CARDBUS_TYPE_TI]	= {
858		.override	= ti_override,
859		.save_state	= ti_save_state,
860		.restore_state	= ti_restore_state,
861		.sock_init	= ti_init,
862	},
863	[CARDBUS_TYPE_TI113X]	= {
864		.override	= ti113x_override,
865		.save_state	= ti_save_state,
866		.restore_state	= ti_restore_state,
867		.sock_init	= ti_init,
868	},
869	[CARDBUS_TYPE_TI12XX]	= {
870		.override	= ti12xx_override,
871		.save_state	= ti_save_state,
872		.restore_state	= ti_restore_state,
873		.sock_init	= ti_init,
874	},
875	[CARDBUS_TYPE_TI1250]	= {
876		.override	= ti1250_override,
877		.save_state	= ti_save_state,
878		.restore_state	= ti_restore_state,
879		.sock_init	= ti_init,
880	},
881	[CARDBUS_TYPE_ENE]	= {
882		.override	= ene_override,
883		.save_state	= ti_save_state,
884		.restore_state	= ti_restore_state,
885		.sock_init	= ti_init,
886	},
887#endif
888#ifdef CONFIG_YENTA_RICOH
889	[CARDBUS_TYPE_RICOH]	= {
890		.override	= ricoh_override,
891		.save_state	= ricoh_save_state,
892		.restore_state	= ricoh_restore_state,
893	},
894#endif
895#ifdef CONFIG_YENTA_TOSHIBA
896	[CARDBUS_TYPE_TOPIC95]	= {
897		.override	= topic95_override,
898	},
899	[CARDBUS_TYPE_TOPIC97]	= {
900		.override	= topic97_override,
901	},
902#endif
903#ifdef CONFIG_YENTA_O2
904	[CARDBUS_TYPE_O2MICRO]	= {
905		.override	= o2micro_override,
906		.restore_state	= o2micro_restore_state,
907	},
908#endif
909};
910
911
912static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
913{
914	int i;
915	unsigned long val;
916	u32 mask;
917	u8 reg;
918
919	/*
920	 * Probe for usable interrupts using the force
921	 * register to generate bogus card status events.
922	 */
923	cb_writel(socket, CB_SOCKET_EVENT, -1);
924	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
925	reg = exca_readb(socket, I365_CSCINT);
926	exca_writeb(socket, I365_CSCINT, 0);
927	val = probe_irq_on() & isa_irq_mask;
928	for (i = 1; i < 16; i++) {
929		if (!((val >> i) & 1))
930			continue;
931		exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
932		cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
933		udelay(100);
934		cb_writel(socket, CB_SOCKET_EVENT, -1);
935	}
936	cb_writel(socket, CB_SOCKET_MASK, 0);
937	exca_writeb(socket, I365_CSCINT, reg);
938
939	mask = probe_irq_mask(val) & 0xffff;
940
941	return mask;
942}
943
944
945/*
946 * yenta PCI irq probing.
947 * currently only used in the TI/EnE initialization code
948 */
949#ifdef CONFIG_YENTA_TI
950
951/* interrupt handler, only used during probing */
952static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
953{
954	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
955	u8 csc;
956	u32 cb_event;
957
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);
962
963	if (cb_event || csc) {
964		socket->probe_status = 1;
965		return IRQ_HANDLED;
966	}
967
968	return IRQ_NONE;
969}
970
971/* probes the PCI interrupt, use only on override functions */
972static int yenta_probe_cb_irq(struct yenta_socket *socket)
973{
974	u8 reg = 0;
975
976	if (!socket->cb_irq)
977		return -1;
978
979	socket->probe_status = 0;
980
981	if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
982		dev_printk(KERN_WARNING, &socket->dev->dev,
983			   "request_irq() in yenta_probe_cb_irq() failed!\n");
984		return -1;
985	}
986
987	/* generate interrupt, wait */
988	if (!socket->dev->irq)
989		reg = exca_readb(socket, I365_CSCINT);
990	exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
991	cb_writel(socket, CB_SOCKET_EVENT, -1);
992	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
993	cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
994
995	msleep(100);
996
997	/* disable interrupts */
998	cb_writel(socket, CB_SOCKET_MASK, 0);
999	exca_writeb(socket, I365_CSCINT, reg);
1000	cb_writel(socket, CB_SOCKET_EVENT, -1);
1001	exca_readb(socket, I365_CSC);
1002
1003	free_irq(socket->cb_irq, socket);
1004
1005	return (int) socket->probe_status;
1006}
1007
1008#endif /* CONFIG_YENTA_TI */
1009
1010
1011/*
1012 * Set static data that doesn't need re-initializing..
1013 */
1014static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1015{
1016	socket->socket.pci_irq = socket->cb_irq;
1017	if (isa_probe)
1018		socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1019	else
1020		socket->socket.irq_mask = 0;
1021
1022	dev_printk(KERN_INFO, &socket->dev->dev,
1023		   "ISA IRQ mask 0x%04x, PCI irq %d\n",
1024		   socket->socket.irq_mask, socket->cb_irq);
1025}
1026
1027/*
1028 * Initialize the standard cardbus registers
1029 */
1030static void yenta_config_init(struct yenta_socket *socket)
1031{
1032	u16 bridge;
1033	struct pci_dev *dev = socket->dev;
1034	struct pci_bus_region region;
1035
1036	pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
1037
1038	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1039	config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1040	config_writew(socket, PCI_COMMAND,
1041			PCI_COMMAND_IO |
1042			PCI_COMMAND_MEMORY |
1043			PCI_COMMAND_MASTER |
1044			PCI_COMMAND_WAIT);
1045
1046	/* MAGIC NUMBERS! Fixme */
1047	config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1048	config_writeb(socket, PCI_LATENCY_TIMER, 168);
1049	config_writel(socket, PCI_PRIMARY_BUS,
1050		(176 << 24) |			   /* sec. latency timer */
1051		((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
1052		((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
1053		dev->subordinate->primary);		   /* primary bus */
1054
1055	/*
1056	 * Set up the bridging state:
1057	 *  - enable write posting.
1058	 *  - memory window 0 prefetchable, window 1 non-prefetchable
1059	 *  - PCI interrupts enabled if a PCI interrupt exists..
1060	 */
1061	bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1062	bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1063	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1064	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1065}
1066
1067/**
1068 * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1069 * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1070 *
1071 * Checks if devices on the bus which the CardBus bridge bridges to would be
1072 * invisible during PCI scans because of a misconfigured subordinate number
1073 * of the parent brige - some BIOSes seem to be too lazy to set it right.
1074 * Does the fixup carefully by checking how far it can go without conflicts.
1075 * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1076 */
1077static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1078{
1079	struct pci_bus *sibling;
1080	unsigned char upper_limit;
1081	/*
1082	 * We only check and fix the parent bridge: All systems which need
1083	 * this fixup that have been reviewed are laptops and the only bridge
1084	 * which needed fixing was the parent bridge of the CardBus bridge:
1085	 */
1086	struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1087
1088	/* Check bus numbers are already set up correctly: */
1089	if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1090		return; /* The subordinate number is ok, nothing to do */
1091
1092	if (!bridge_to_fix->parent)
1093		return; /* Root bridges are ok */
1094
1095	/* stay within the limits of the bus range of the parent: */
1096	upper_limit = bridge_to_fix->parent->busn_res.end;
1097
1098	/* check the bus ranges of all sibling bridges to prevent overlap */
1099	list_for_each_entry(sibling, &bridge_to_fix->parent->children,
1100			node) {
1101		/*
1102		 * If the sibling has a higher secondary bus number
1103		 * and it's secondary is equal or smaller than our
1104		 * current upper limit, set the new upper limit to
1105		 * the bus number below the sibling's range:
1106		 */
1107		if (sibling->busn_res.start > bridge_to_fix->busn_res.end
1108		    && sibling->busn_res.start <= upper_limit)
1109			upper_limit = sibling->busn_res.start - 1;
1110	}
1111
1112	/* Show that the wanted subordinate number is not possible: */
1113	if (cardbus_bridge->busn_res.end > upper_limit)
1114		dev_printk(KERN_WARNING, &cardbus_bridge->dev,
1115			   "Upper limit for fixing this "
1116			   "bridge's parent bridge: #%02x\n", upper_limit);
1117
1118	/* If we have room to increase the bridge's subordinate number, */
1119	if (bridge_to_fix->busn_res.end < upper_limit) {
1120
1121		/* use the highest number of the hidden bus, within limits */
1122		unsigned char subordinate_to_assign =
1123			min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1124
1125		dev_printk(KERN_INFO, &bridge_to_fix->dev,
1126			   "Raising subordinate bus# of parent "
1127			   "bus (#%02x) from #%02x to #%02x\n",
1128			   bridge_to_fix->number,
1129			   (int)bridge_to_fix->busn_res.end, subordinate_to_assign);
1130
1131		/* Save the new subordinate in the bus struct of the bridge */
1132		bridge_to_fix->busn_res.end = subordinate_to_assign;
1133
1134		/* and update the PCI config space with the new subordinate */
1135		pci_write_config_byte(bridge_to_fix->self,
1136			PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1137	}
1138}
1139
1140/*
1141 * Initialize a cardbus controller. Make sure we have a usable
1142 * interrupt, and that we can map the cardbus area. Fill in the
1143 * socket information structure..
1144 */
1145static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1146{
1147	struct yenta_socket *socket;
1148	int ret;
1149
1150	/*
1151	 * If we failed to assign proper bus numbers for this cardbus
1152	 * controller during PCI probe, its subordinate pci_bus is NULL.
1153	 * Bail out if so.
1154	 */
1155	if (!dev->subordinate) {
1156		dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
1157			   "(try 'pci=assign-busses')\n");
1158		return -ENODEV;
1159	}
1160
1161	socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1162	if (!socket)
1163		return -ENOMEM;
1164
1165	/* prepare pcmcia_socket */
1166	socket->socket.ops = &yenta_socket_operations;
1167	socket->socket.resource_ops = &pccard_nonstatic_ops;
1168	socket->socket.dev.parent = &dev->dev;
1169	socket->socket.driver_data = socket;
1170	socket->socket.owner = THIS_MODULE;
1171	socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1172	socket->socket.map_size = 0x1000;
1173	socket->socket.cb_dev = dev;
1174
1175	/* prepare struct yenta_socket */
1176	socket->dev = dev;
1177	pci_set_drvdata(dev, socket);
1178
1179	/*
1180	 * Do some basic sanity checking..
1181	 */
1182	if (pci_enable_device(dev)) {
1183		ret = -EBUSY;
1184		goto free;
1185	}
1186
1187	ret = pci_request_regions(dev, "yenta_socket");
1188	if (ret)
1189		goto disable;
1190
1191	if (!pci_resource_start(dev, 0)) {
1192		dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
1193		ret = -ENODEV;
1194		goto release;
1195	}
1196
1197	/*
1198	 * Ok, start setup.. Map the cardbus registers,
1199	 * and request the IRQ.
1200	 */
1201	socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1202	if (!socket->base) {
1203		ret = -ENOMEM;
1204		goto release;
1205	}
1206
1207	/*
1208	 * report the subsystem vendor and device for help debugging
1209	 * the irq stuff...
1210	 */
1211	dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
1212		   dev->subsystem_vendor, dev->subsystem_device);
1213
1214	yenta_config_init(socket);
1215
1216	/* Disable all events */
1217	cb_writel(socket, CB_SOCKET_MASK, 0x0);
1218
1219	/* Set up the bridge regions.. */
1220	yenta_allocate_resources(socket);
1221
1222	socket->cb_irq = dev->irq;
1223
1224	/* Do we have special options for the device? */
1225	if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1226	    id->driver_data < ARRAY_SIZE(cardbus_type)) {
1227		socket->type = &cardbus_type[id->driver_data];
1228
1229		ret = socket->type->override(socket);
1230		if (ret < 0)
1231			goto unmap;
1232	}
1233
1234	/* We must finish initialization here */
1235
1236	if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1237		/* No IRQ or request_irq failed. Poll */
1238		socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1239		setup_timer(&socket->poll_timer, yenta_interrupt_wrapper,
1240			    (unsigned long)socket);
1241		mod_timer(&socket->poll_timer, jiffies + HZ);
1242		dev_printk(KERN_INFO, &dev->dev,
1243			   "no PCI IRQ, CardBus support disabled for this "
1244			   "socket.\n");
1245		dev_printk(KERN_INFO, &dev->dev,
1246			   "check your BIOS CardBus, BIOS IRQ or ACPI "
1247			   "settings.\n");
1248	} else {
1249		socket->socket.features |= SS_CAP_CARDBUS;
1250	}
1251
1252	/* Figure out what the dang thing can do for the PCMCIA layer... */
1253	yenta_interrogate(socket);
1254	yenta_get_socket_capabilities(socket, isa_interrupts);
1255	dev_printk(KERN_INFO, &dev->dev,
1256		   "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1257
1258	yenta_fixup_parent_bridge(dev->subordinate);
1259
1260	/* Register it with the pcmcia layer.. */
1261	ret = pcmcia_register_socket(&socket->socket);
1262	if (ret == 0) {
1263		/* Add the yenta register attributes */
1264		ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1265		if (ret == 0)
1266			goto out;
1267
1268		/* error path... */
1269		pcmcia_unregister_socket(&socket->socket);
1270	}
1271
1272 unmap:
1273	iounmap(socket->base);
1274 release:
1275	pci_release_regions(dev);
1276 disable:
1277	pci_disable_device(dev);
1278 free:
1279	kfree(socket);
1280 out:
1281	return ret;
1282}
1283
1284#ifdef CONFIG_PM
1285static int yenta_dev_suspend_noirq(struct device *dev)
1286{
1287	struct pci_dev *pdev = to_pci_dev(dev);
1288	struct yenta_socket *socket = pci_get_drvdata(pdev);
1289
1290	if (!socket)
1291		return 0;
1292
1293	if (socket->type && socket->type->save_state)
1294		socket->type->save_state(socket);
1295
1296	pci_save_state(pdev);
1297	pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1298	pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1299	pci_disable_device(pdev);
1300
1301	return 0;
1302}
1303
1304static int yenta_dev_resume_noirq(struct device *dev)
1305{
1306	struct pci_dev *pdev = to_pci_dev(dev);
1307	struct yenta_socket *socket = pci_get_drvdata(pdev);
1308	int ret;
1309
1310	if (!socket)
1311		return 0;
1312
1313	pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1314	pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1315
1316	ret = pci_enable_device(pdev);
1317	if (ret)
1318		return ret;
1319
1320	pci_set_master(pdev);
1321
1322	if (socket->type && socket->type->restore_state)
1323		socket->type->restore_state(socket);
1324
1325	return 0;
1326}
1327
1328static const struct dev_pm_ops yenta_pm_ops = {
1329	.suspend_noirq = yenta_dev_suspend_noirq,
1330	.resume_noirq = yenta_dev_resume_noirq,
1331	.freeze_noirq = yenta_dev_suspend_noirq,
1332	.thaw_noirq = yenta_dev_resume_noirq,
1333	.poweroff_noirq = yenta_dev_suspend_noirq,
1334	.restore_noirq = yenta_dev_resume_noirq,
1335};
1336
1337#define YENTA_PM_OPS	(&yenta_pm_ops)
1338#else
1339#define YENTA_PM_OPS	NULL
1340#endif
1341
1342#define CB_ID(vend, dev, type)				\
1343	{						\
1344		.vendor		= vend,			\
1345		.device		= dev,			\
1346		.subvendor	= PCI_ANY_ID,		\
1347		.subdevice	= PCI_ANY_ID,		\
1348		.class		= PCI_CLASS_BRIDGE_CARDBUS << 8, \
1349		.class_mask	= ~0,			\
1350		.driver_data	= CARDBUS_TYPE_##type,	\
1351	}
1352
1353static const struct pci_device_id yenta_table[] = {
1354	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1355
1356	/*
1357	 * TBD: Check if these TI variants can use more
1358	 * advanced overrides instead.  (I can't get the
1359	 * data sheets for these devices. --rmk)
1360	 */
1361#ifdef CONFIG_YENTA_TI
1362	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1363
1364	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1365	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1366
1367	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1368	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1369	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1370	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1371	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1372	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1373	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1374	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1375	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1376	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1377	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1378	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1379	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1380	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1381	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1382	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1383	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1384
1385	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1386	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1387
1388	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1389	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1390	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1391	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1392	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1393	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1394	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1395	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1396
1397	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1398	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1399	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1400	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1401	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1402	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1403	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1404	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1405#endif /* CONFIG_YENTA_TI */
1406
1407#ifdef CONFIG_YENTA_RICOH
1408	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1409	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1410	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1411	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1412	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1413#endif
1414
1415#ifdef CONFIG_YENTA_TOSHIBA
1416	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1417	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1418	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1419#endif
1420
1421#ifdef CONFIG_YENTA_O2
1422	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1423#endif
1424
1425	/* match any cardbus bridge */
1426	CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1427	{ /* all zeroes */ }
1428};
1429MODULE_DEVICE_TABLE(pci, yenta_table);
1430
1431
1432static struct pci_driver yenta_cardbus_driver = {
1433	.name		= "yenta_cardbus",
1434	.id_table	= yenta_table,
1435	.probe		= yenta_probe,
1436	.remove		= yenta_close,
1437	.driver.pm	= YENTA_PM_OPS,
1438};
1439
1440module_pci_driver(yenta_cardbus_driver);
1441
1442MODULE_LICENSE("GPL");
1443