yenta_socket.c 39.2 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8
/*
 * Regular cardbus driver ("yenta_socket")
 *
 * (C) Copyright 1999, 2000 Linus Torvalds
 *
 * Changelog:
 * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
 * 	Dynamically adjust the size of the bridge resource
D
Dominik Brodowski 已提交
9
 *
L
Linus Torvalds 已提交
10 11 12 13 14 15 16 17 18
 * May 2003: Dominik Brodowski <linux@brodo.de>
 * 	Merge pci_socket.c and yenta.c into one file
 */
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/module.h>
D
Dominik Brodowski 已提交
19
#include <linux/io.h>
20
#include <linux/slab.h>
L
Linus Torvalds 已提交
21 22 23 24 25 26

#include <pcmcia/ss.h>

#include "yenta_socket.h"
#include "i82365.h"

27
static bool disable_clkrun;
L
Linus Torvalds 已提交
28 29 30
module_param(disable_clkrun, bool, 0444);
MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");

31
static bool isa_probe = 1;
32 33 34
module_param(isa_probe, bool, 0444);
MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");

35
static bool pwr_irqs_off;
36 37 38
module_param(pwr_irqs_off, bool, 0644);
MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");

39 40 41 42 43
static char o2_speedup[] = "default";
module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
	"or 'default' (uses recommended behaviour for the detected bridge)");

44 45 46 47 48 49 50 51 52 53 54 55
/*
 * Only probe "regular" interrupts, don't
 * touch dangerous spots like the mouse irq,
 * because there are mice that apparently
 * get really confused if they get fondled
 * too intimately.
 *
 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
 */
static u32 isa_interrupts = 0x0ef8;


56
#define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
L
Linus Torvalds 已提交
57 58 59 60 61

/* Don't ask.. */
#define to_cycles(ns)	((ns)/120)
#define to_ns(cycles)	((cycles)*120)

R
Randy Dunlap 已提交
62
/*
63 64 65 66
 * yenta PCI irq probing.
 * currently only used in the TI/EnE initialization code
 */
#ifdef CONFIG_YENTA_TI
L
Linus Torvalds 已提交
67
static int yenta_probe_cb_irq(struct yenta_socket *socket);
68 69
static unsigned int yenta_probe_irq(struct yenta_socket *socket,
				u32 isa_irq_mask);
70
#endif
L
Linus Torvalds 已提交
71 72 73 74


static unsigned int override_bios;
module_param(override_bios, uint, 0000);
D
Dominik Brodowski 已提交
75
MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
L
Linus Torvalds 已提交
76 77 78 79 80 81 82 83 84

/*
 * Generate easy-to-use ways of reading a cardbus sockets
 * regular memory space ("cb_xxx"), configuration space
 * ("config_xxx") and compatibility space ("exca_xxxx")
 */
static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
{
	u32 val = readl(socket->base + reg);
85
	debug("%04x %08x\n", socket, reg, val);
L
Linus Torvalds 已提交
86 87 88 89 90
	return val;
}

static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
{
91
	debug("%04x %08x\n", socket, reg, val);
L
Linus Torvalds 已提交
92
	writel(val, socket->base + reg);
93
	readl(socket->base + reg); /* avoid problems with PCI write posting */
L
Linus Torvalds 已提交
94 95 96 97 98 99
}

static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
{
	u8 val;
	pci_read_config_byte(socket->dev, offset, &val);
100
	debug("%04x %02x\n", socket, offset, val);
L
Linus Torvalds 已提交
101 102 103 104 105 106 107
	return val;
}

static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
{
	u16 val;
	pci_read_config_word(socket->dev, offset, &val);
108
	debug("%04x %04x\n", socket, offset, val);
L
Linus Torvalds 已提交
109 110 111 112 113 114 115
	return val;
}

static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
{
	u32 val;
	pci_read_config_dword(socket->dev, offset, &val);
116
	debug("%04x %08x\n", socket, offset, val);
L
Linus Torvalds 已提交
117 118 119 120 121
	return val;
}

static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
{
122
	debug("%04x %02x\n", socket, offset, val);
L
Linus Torvalds 已提交
123 124 125 126 127
	pci_write_config_byte(socket->dev, offset, val);
}

static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
{
128
	debug("%04x %04x\n", socket, offset, val);
L
Linus Torvalds 已提交
129 130 131 132 133
	pci_write_config_word(socket->dev, offset, val);
}

static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
{
134
	debug("%04x %08x\n", socket, offset, val);
L
Linus Torvalds 已提交
135 136 137 138 139 140
	pci_write_config_dword(socket->dev, offset, val);
}

static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
{
	u8 val = readb(socket->base + 0x800 + reg);
141
	debug("%04x %02x\n", socket, reg, val);
L
Linus Torvalds 已提交
142 143 144 145 146 147 148 149
	return val;
}

static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
{
	u16 val;
	val = readb(socket->base + 0x800 + reg);
	val |= readb(socket->base + 0x800 + reg + 1) << 8;
150
	debug("%04x %04x\n", socket, reg, val);
L
Linus Torvalds 已提交
151 152 153 154 155
	return val;
}

static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
{
156
	debug("%04x %02x\n", socket, reg, val);
L
Linus Torvalds 已提交
157
	writeb(val, socket->base + 0x800 + reg);
158
	readb(socket->base + 0x800 + reg); /* PCI write posting... */
L
Linus Torvalds 已提交
159 160 161 162
}

static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
{
163
	debug("%04x %04x\n", socket, reg, val);
L
Linus Torvalds 已提交
164 165
	writeb(val, socket->base + 0x800 + reg);
	writeb(val >> 8, socket->base + 0x800 + reg + 1);
166 167 168 169

	/* PCI write posting... */
	readb(socket->base + 0x800 + reg);
	readb(socket->base + 0x800 + reg + 1);
L
Linus Torvalds 已提交
170 171
}

172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205
static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
{
	struct pci_dev *dev = to_pci_dev(yentadev);
	struct yenta_socket *socket = pci_get_drvdata(dev);
	int offset = 0, i;

	offset = snprintf(buf, PAGE_SIZE, "CB registers:");
	for (i = 0; i < 0x24; i += 4) {
		unsigned val;
		if (!(i & 15))
			offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
		val = cb_readl(socket, i);
		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
	}

	offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
	for (i = 0; i < 0x45; i++) {
		unsigned char val;
		if (!(i & 7)) {
			if (i & 8) {
				memcpy(buf + offset, " -", 2);
				offset += 2;
			} else
				offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
		}
		val = exca_readb(socket, i);
		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
	}
	buf[offset++] = '\n';
	return offset;
}

static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);

L
Linus Torvalds 已提交
206 207 208 209 210 211 212 213 214 215 216 217
/*
 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
 * on what kind of card is inserted..
 */
static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	unsigned int val;
	u32 state = cb_readl(socket, CB_SOCKET_STATE);

	val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
	val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
218 219 220
	val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
	val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;

L
Linus Torvalds 已提交
221 222

	if (state & CB_CBCARD) {
223
		val |= SS_CARDBUS;
L
Linus Torvalds 已提交
224 225 226
		val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
		val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
		val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
227
	} else if (state & CB_16BITCARD) {
L
Linus Torvalds 已提交
228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
		u8 status = exca_readb(socket, I365_STATUS);
		val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
		if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
			val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
		} else {
			val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
			val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
		}
		val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
		val |= (status & I365_CS_READY) ? SS_READY : 0;
		val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
	}

	*value = val;
	return 0;
}

static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
{
247 248 249 250 251 252 253 254 255 256
	/* some birdges require to use the ExCA registers to power 16bit cards */
	if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
	    (socket->flags & YENTA_16BIT_POWER_EXCA)) {
		u8 reg, old;
		reg = old = exca_readb(socket, I365_POWER);
		reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);

		/* i82365SL-DF style */
		if (socket->flags & YENTA_16BIT_POWER_DF) {
			switch (state->Vcc) {
D
Dominik Brodowski 已提交
257 258 259 260 261 262 263 264 265
			case 33:
				reg |= I365_VCC_3V;
				break;
			case 50:
				reg |= I365_VCC_5V;
				break;
			default:
				reg = 0;
				break;
266 267 268
			}
			switch (state->Vpp) {
			case 33:
D
Dominik Brodowski 已提交
269 270 271 272 273 274
			case 50:
				reg |= I365_VPP1_5V;
				break;
			case 120:
				reg |= I365_VPP1_12V;
				break;
275 276 277 278
			}
		} else {
			/* i82365SL-B style */
			switch (state->Vcc) {
D
Dominik Brodowski 已提交
279 280 281 282 283 284
			case 50:
				reg |= I365_VCC_5V;
				break;
			default:
				reg = 0;
				break;
285 286
			}
			switch (state->Vpp) {
D
Dominik Brodowski 已提交
287 288 289 290 291 292
			case 50:
				reg |= I365_VPP1_5V | I365_VPP2_5V;
				break;
			case 120:
				reg |= I365_VPP1_12V | I365_VPP2_12V;
				break;
293 294 295 296 297 298 299 300
			}
		}

		if (reg != old)
			exca_writeb(socket, I365_POWER, reg);
	} else {
		u32 reg = 0;	/* CB_SC_STPCLK? */
		switch (state->Vcc) {
D
Dominik Brodowski 已提交
301 302 303 304 305 306 307 308 309
		case 33:
			reg = CB_SC_VCC_3V;
			break;
		case 50:
			reg = CB_SC_VCC_5V;
			break;
		default:
			reg = 0;
			break;
310 311
		}
		switch (state->Vpp) {
D
Dominik Brodowski 已提交
312 313 314 315 316 317 318 319 320
		case 33:
			reg |= CB_SC_VPP_3V;
			break;
		case 50:
			reg |= CB_SC_VPP_5V;
			break;
		case 120:
			reg |= CB_SC_VPP_12V;
			break;
321 322 323
		}
		if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
			cb_writel(socket, CB_SOCKET_CONTROL, reg);
L
Linus Torvalds 已提交
324 325 326 327 328 329 330 331
	}
}

static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	u16 bridge;

332 333 334 335
	/* if powering down: do it immediately */
	if (state->Vcc == 0)
		yenta_set_power(socket, state);

L
Linus Torvalds 已提交
336 337 338 339 340 341 342 343 344
	socket->io_irq = state->io_irq;
	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
		u8 intr;
		bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;

		/* ISA interrupt control? */
		intr = exca_readb(socket, I365_INTCTL);
		intr = (intr & ~0xf);
345 346
		if (!socket->dev->irq) {
			intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
L
Linus Torvalds 已提交
347 348 349 350 351 352 353 354 355
			bridge |= CB_BRIDGE_INTR;
		}
		exca_writeb(socket, I365_INTCTL, intr);
	}  else {
		u8 reg;

		reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
		reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
		reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
356
		if (state->io_irq != socket->dev->irq) {
L
Linus Torvalds 已提交
357 358 359 360 361 362 363
			reg |= state->io_irq;
			bridge |= CB_BRIDGE_INTR;
		}
		exca_writeb(socket, I365_INTCTL, reg);

		reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
		reg |= I365_PWR_NORESET;
D
Dominik Brodowski 已提交
364 365 366 367
		if (state->flags & SS_PWR_AUTO)
			reg |= I365_PWR_AUTO;
		if (state->flags & SS_OUTPUT_ENA)
			reg |= I365_PWR_OUT;
L
Linus Torvalds 已提交
368 369 370 371
		if (exca_readb(socket, I365_POWER) != reg)
			exca_writeb(socket, I365_POWER, reg);

		/* CSC interrupt: no ISA irq for CSC */
372 373 374
		reg = exca_readb(socket, I365_CSCINT);
		reg &= I365_CSC_IRQ_MASK;
		reg |= I365_CSC_DETECT;
L
Linus Torvalds 已提交
375
		if (state->flags & SS_IOCARD) {
D
Dominik Brodowski 已提交
376 377
			if (state->csc_mask & SS_STSCHG)
				reg |= I365_CSC_STSCHG;
L
Linus Torvalds 已提交
378
		} else {
D
Dominik Brodowski 已提交
379 380 381 382 383 384
			if (state->csc_mask & SS_BATDEAD)
				reg |= I365_CSC_BVD1;
			if (state->csc_mask & SS_BATWARN)
				reg |= I365_CSC_BVD2;
			if (state->csc_mask & SS_READY)
				reg |= I365_CSC_READY;
L
Linus Torvalds 已提交
385 386 387
		}
		exca_writeb(socket, I365_CSCINT, reg);
		exca_readb(socket, I365_CSC);
D
Dominik Brodowski 已提交
388
		if (sock->zoom_video)
L
Linus Torvalds 已提交
389 390 391 392 393 394
			sock->zoom_video(sock, state->flags & SS_ZVCARD);
	}
	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
	/* Socket event mask: get card insert/remove events.. */
	cb_writel(socket, CB_SOCKET_EVENT, -1);
	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
395 396 397 398

	/* if powering up: do it as the last step when the socket is configured */
	if (state->Vcc != 0)
		yenta_set_power(socket, state);
L
Linus Torvalds 已提交
399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425
	return 0;
}

static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	int map;
	unsigned char ioctl, addr, enable;

	map = io->map;

	if (map > 1)
		return -EINVAL;

	enable = I365_ENA_IO(map);
	addr = exca_readb(socket, I365_ADDRWIN);

	/* Disable the window before changing it.. */
	if (addr & enable) {
		addr &= ~enable;
		exca_writeb(socket, I365_ADDRWIN, addr);
	}

	exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
	exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);

	ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
D
Dominik Brodowski 已提交
426 427 428 429 430 431
	if (io->flags & MAP_0WS)
		ioctl |= I365_IOCTL_0WS(map);
	if (io->flags & MAP_16BIT)
		ioctl |= I365_IOCTL_16BIT(map);
	if (io->flags & MAP_AUTOSZ)
		ioctl |= I365_IOCTL_IOCS16(map);
L
Linus Torvalds 已提交
432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447
	exca_writeb(socket, I365_IOCTL, ioctl);

	if (io->flags & MAP_ACTIVE)
		exca_writeb(socket, I365_ADDRWIN, addr | enable);
	return 0;
}

static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	struct pci_bus_region region;
	int map;
	unsigned char addr, enable;
	unsigned int start, stop, card_start;
	unsigned short word;

448
	pcibios_resource_to_bus(socket->dev->bus, &region, mem->res);
L
Linus Torvalds 已提交
449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476

	map = mem->map;
	start = region.start;
	stop = region.end;
	card_start = mem->card_start;

	if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
	    (card_start >> 26) || mem->speed > 1000)
		return -EINVAL;

	enable = I365_ENA_MEM(map);
	addr = exca_readb(socket, I365_ADDRWIN);
	if (addr & enable) {
		addr &= ~enable;
		exca_writeb(socket, I365_ADDRWIN, addr);
	}

	exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);

	word = (start >> 12) & 0x0fff;
	if (mem->flags & MAP_16BIT)
		word |= I365_MEM_16BIT;
	if (mem->flags & MAP_0WS)
		word |= I365_MEM_0WS;
	exca_writew(socket, I365_MEM(map) + I365_W_START, word);

	word = (stop >> 12) & 0x0fff;
	switch (to_cycles(mem->speed)) {
D
Dominik Brodowski 已提交
477 478 479 480 481 482 483 484 485 486 487
	case 0:
		break;
	case 1:
		word |= I365_MEM_WS0;
		break;
	case 2:
		word |= I365_MEM_WS1;
		break;
	default:
		word |= I365_MEM_WS1 | I365_MEM_WS0;
		break;
L
Linus Torvalds 已提交
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503
	}
	exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);

	word = ((card_start - start) >> 12) & 0x3fff;
	if (mem->flags & MAP_WRPROT)
		word |= I365_MEM_WRPROT;
	if (mem->flags & MAP_ATTRIB)
		word |= I365_MEM_REG;
	exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);

	if (mem->flags & MAP_ACTIVE)
		exca_writeb(socket, I365_ADDRWIN, addr | enable);
	return 0;
}


504

505
static irqreturn_t yenta_interrupt(int irq, void *dev_id)
L
Linus Torvalds 已提交
506
{
507 508
	unsigned int events;
	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
L
Linus Torvalds 已提交
509 510 511 512 513 514 515 516 517
	u8 csc;
	u32 cb_event;

	/* Clear interrupt status for the event */
	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
	cb_writel(socket, CB_SOCKET_EVENT, cb_event);

	csc = exca_readb(socket, I365_CSC);

518 519 520
	if (!(cb_event || csc))
		return IRQ_NONE;

L
Linus Torvalds 已提交
521 522 523 524 525 526 527 528 529 530
	events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
	events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
	if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
		events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
	} else {
		events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
		events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
		events |= (csc & I365_CSC_READY) ? SS_READY : 0;
	}

531
	if (events)
L
Linus Torvalds 已提交
532
		pcmcia_parse_events(&socket->socket, events);
533

534
	return IRQ_HANDLED;
L
Linus Torvalds 已提交
535 536 537 538 539 540
}

static void yenta_interrupt_wrapper(unsigned long data)
{
	struct yenta_socket *socket = (struct yenta_socket *) data;

541
	yenta_interrupt(0, (void *)socket);
L
Linus Torvalds 已提交
542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563
	socket->poll_timer.expires = jiffies + HZ;
	add_timer(&socket->poll_timer);
}

static void yenta_clear_maps(struct yenta_socket *socket)
{
	int i;
	struct resource res = { .start = 0, .end = 0x0fff };
	pccard_io_map io = { 0, 0, 0, 0, 1 };
	pccard_mem_map mem = { .res = &res, };

	yenta_set_socket(&socket->socket, &dead_socket);
	for (i = 0; i < 2; i++) {
		io.map = i;
		yenta_set_io_map(&socket->socket, &io);
	}
	for (i = 0; i < 5; i++) {
		mem.map = i;
		yenta_set_mem_map(&socket->socket, &mem);
	}
}

564 565 566 567 568 569 570 571 572 573 574 575
/* redoes voltage interrogation if required */
static void yenta_interrogate(struct yenta_socket *socket)
{
	u32 state;

	state = cb_readl(socket, CB_SOCKET_STATE);
	if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
	    (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
	    ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
		cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
}

L
Linus Torvalds 已提交
576 577 578 579 580 581 582 583 584
/* Called at resume and initialization events */
static int yenta_sock_init(struct pcmcia_socket *sock)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

	exca_writeb(socket, I365_GBLCTL, 0x00);
	exca_writeb(socket, I365_GENCTL, 0x00);

	/* Redo card voltage interrogation */
585
	yenta_interrogate(socket);
L
Linus Torvalds 已提交
586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611

	yenta_clear_maps(socket);

	if (socket->type && socket->type->sock_init)
		socket->type->sock_init(socket);

	/* Re-enable CSC interrupts */
	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);

	return 0;
}

static int yenta_sock_suspend(struct pcmcia_socket *sock)
{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

	/* Disable CSC interrupts */
	cb_writel(socket, CB_SOCKET_MASK, 0x0);

	return 0;
}

/*
 * Use an adaptive allocation for the memory resource,
 * sometimes the memory behind pci bridges is limited:
 * 1/8 of the size of the io window of the parent.
612 613
 * max 4 MB, min 16 kB. We try very hard to not get below
 * the "ACC" values, though.
L
Linus Torvalds 已提交
614
 */
D
Dominik Brodowski 已提交
615 616 617
#define BRIDGE_MEM_MAX (4*1024*1024)
#define BRIDGE_MEM_ACC (128*1024)
#define BRIDGE_MEM_MIN (16*1024)
L
Linus Torvalds 已提交
618

619 620
#define BRIDGE_IO_MAX 512
#define BRIDGE_IO_ACC 256
L
Linus Torvalds 已提交
621 622 623 624 625 626
#define BRIDGE_IO_MIN 32

#ifndef PCIBIOS_MIN_CARDBUS_IO
#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
#endif

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641
static int yenta_search_one_res(struct resource *root, struct resource *res,
				u32 min)
{
	u32 align, size, start, end;

	if (res->flags & IORESOURCE_IO) {
		align = 1024;
		size = BRIDGE_IO_MAX;
		start = PCIBIOS_MIN_CARDBUS_IO;
		end = ~0U;
	} else {
		unsigned long avail = root->end - root->start;
		int i;
		size = BRIDGE_MEM_MAX;
		if (size > avail/8) {
D
Dominik Brodowski 已提交
642
			size = (avail+1)/8;
643 644 645 646 647 648 649 650 651 652 653 654 655 656 657
			/* round size down to next power of 2 */
			i = 0;
			while ((size /= 2) != 0)
				i++;
			size = 1 << i;
		}
		if (size < min)
			size = min;
		align = size;
		start = PCIBIOS_MIN_MEM;
		end = ~0U;
	}

	do {
		if (allocate_resource(root, res, size, start, end, align,
D
Dominik Brodowski 已提交
658
				      NULL, NULL) == 0) {
659 660 661 662 663 664 665 666 667 668 669 670 671
			return 1;
		}
		size = size/2;
		align = size;
	} while (size >= min);

	return 0;
}


static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
			    u32 min)
{
672
	struct resource *root;
673
	int i;
674 675

	pci_bus_for_each_resource(socket->dev->bus, root, i) {
676 677 678 679 680 681 682 683 684 685 686 687 688
		if (!root)
			continue;

		if ((res->flags ^ root->flags) &
		    (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
			continue; /* Wrong type */

		if (yenta_search_one_res(root, res, min))
			return 1;
	}
	return 0;
}

689
static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
L
Linus Torvalds 已提交
690
{
M
Matthew Wilcox 已提交
691 692
	struct pci_dev *dev = socket->dev;
	struct resource *res;
693
	struct pci_bus_region region;
L
Linus Torvalds 已提交
694 695
	unsigned mask;

M
Matthew Wilcox 已提交
696
	res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
I
Ivan Kokshaysky 已提交
697 698
	/* Already allocated? */
	if (res->parent)
699
		return 0;
I
Ivan Kokshaysky 已提交
700

L
Linus Torvalds 已提交
701 702 703 704 705
	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
	mask = ~0xfff;
	if (type & IORESOURCE_IO)
		mask = ~3;

M
Matthew Wilcox 已提交
706
	res->name = dev->subordinate->name;
L
Linus Torvalds 已提交
707 708
	res->flags = type;

709 710 711
	region.start = config_readl(socket, addr_start) & mask;
	region.end = config_readl(socket, addr_end) | ~mask;
	if (region.start && region.end > region.start && !override_bios) {
712
		pcibios_bus_to_resource(dev->bus, res, &region);
M
Matthew Wilcox 已提交
713
		if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
714
			return 0;
M
Matthew Wilcox 已提交
715
		dev_printk(KERN_INFO, &dev->dev,
716 717 718
			   "Preassigned resource %d busy or not available, "
			   "reconfiguring...\n",
			   nr);
L
Linus Torvalds 已提交
719 720 721
	}

	if (type & IORESOURCE_IO) {
722 723
		if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
		    (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
724 725
		    (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
			return 1;
L
Linus Torvalds 已提交
726
	} else {
727 728 729
		if (type & IORESOURCE_PREFETCH) {
			if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
			    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
730 731
			    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
				return 1;
732 733
			/* Approximating prefetchable by non-prefetchable */
			res->flags = IORESOURCE_MEM;
L
Linus Torvalds 已提交
734
		}
735 736
		if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
		    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
737 738
		    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
			return 1;
739 740
	}

M
Matthew Wilcox 已提交
741
	dev_printk(KERN_INFO, &dev->dev,
742 743
		   "no resource of type %x available, trying to continue...\n",
		   type);
744
	res->start = res->end = res->flags = 0;
745
	return 0;
L
Linus Torvalds 已提交
746 747 748 749 750 751 752
}

/*
 * Allocate the bridge mappings for the device..
 */
static void yenta_allocate_resources(struct yenta_socket *socket)
{
753 754
	int program = 0;
	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);
762 763
	if (program)
		pci_setup_cardbus(socket->dev->subordinate);
L
Linus Torvalds 已提交
764 765 766 767 768 769 770 771 772
}


/*
 * Free the bridge mappings for the device..
 */
static void yenta_free_resources(struct yenta_socket *socket)
{
	int i;
D
Dominik Brodowski 已提交
773
	for (i = 0; i < 4; i++) {
L
Linus Torvalds 已提交
774 775 776 777
		struct resource *res;
		res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
		if (res->start != 0 && res->end != 0)
			release_resource(res);
778
		res->start = res->end = res->flags = 0;
L
Linus Torvalds 已提交
779 780 781 782 783 784 785
	}
}


/*
 * Close it down - release our resources and go home..
 */
B
Bill Pemberton 已提交
786
static void yenta_close(struct pci_dev *dev)
L
Linus Torvalds 已提交
787 788 789
{
	struct yenta_socket *sock = pci_get_drvdata(dev);

790 791 792
	/* Remove the register attributes */
	device_remove_file(&dev->dev, &dev_attr_yenta_registers);

L
Linus Torvalds 已提交
793 794
	/* we don't want a dying socket registered */
	pcmcia_unregister_socket(&sock->socket);
D
Dominik Brodowski 已提交
795

L
Linus Torvalds 已提交
796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824
	/* Disable all events so we don't die in an IRQ storm */
	cb_writel(sock, CB_SOCKET_MASK, 0x0);
	exca_writeb(sock, I365_CSCINT, 0);

	if (sock->cb_irq)
		free_irq(sock->cb_irq, sock);
	else
		del_timer_sync(&sock->poll_timer);

	if (sock->base)
		iounmap(sock->base);
	yenta_free_resources(sock);

	pci_release_regions(dev);
	pci_disable_device(dev);
	pci_set_drvdata(dev, NULL);
}


static struct pccard_operations yenta_socket_operations = {
	.init			= yenta_sock_init,
	.suspend		= yenta_sock_suspend,
	.get_status		= yenta_get_status,
	.set_socket		= yenta_set_socket,
	.set_io_map		= yenta_set_io_map,
	.set_mem_map		= yenta_set_mem_map,
};


825
#ifdef CONFIG_YENTA_TI
L
Linus Torvalds 已提交
826
#include "ti113x.h"
827 828
#endif
#ifdef CONFIG_YENTA_RICOH
L
Linus Torvalds 已提交
829
#include "ricoh.h"
830 831
#endif
#ifdef CONFIG_YENTA_TOSHIBA
L
Linus Torvalds 已提交
832
#include "topic.h"
833 834
#endif
#ifdef CONFIG_YENTA_O2
L
Linus Torvalds 已提交
835
#include "o2micro.h"
836
#endif
L
Linus Torvalds 已提交
837 838 839 840 841 842 843 844

enum {
	CARDBUS_TYPE_DEFAULT = -1,
	CARDBUS_TYPE_TI,
	CARDBUS_TYPE_TI113X,
	CARDBUS_TYPE_TI12XX,
	CARDBUS_TYPE_TI1250,
	CARDBUS_TYPE_RICOH,
845
	CARDBUS_TYPE_TOPIC95,
L
Linus Torvalds 已提交
846 847
	CARDBUS_TYPE_TOPIC97,
	CARDBUS_TYPE_O2MICRO,
848
	CARDBUS_TYPE_ENE,
L
Linus Torvalds 已提交
849 850 851 852 853 854 855
};

/*
 * Different cardbus controllers have slightly different
 * initialization sequences etc details. List them here..
 */
static struct cardbus_type cardbus_type[] = {
856
#ifdef CONFIG_YENTA_TI
L
Linus Torvalds 已提交
857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880
	[CARDBUS_TYPE_TI]	= {
		.override	= ti_override,
		.save_state	= ti_save_state,
		.restore_state	= ti_restore_state,
		.sock_init	= ti_init,
	},
	[CARDBUS_TYPE_TI113X]	= {
		.override	= ti113x_override,
		.save_state	= ti_save_state,
		.restore_state	= ti_restore_state,
		.sock_init	= ti_init,
	},
	[CARDBUS_TYPE_TI12XX]	= {
		.override	= ti12xx_override,
		.save_state	= ti_save_state,
		.restore_state	= ti_restore_state,
		.sock_init	= ti_init,
	},
	[CARDBUS_TYPE_TI1250]	= {
		.override	= ti1250_override,
		.save_state	= ti_save_state,
		.restore_state	= ti_restore_state,
		.sock_init	= ti_init,
	},
881 882 883 884 885 886
	[CARDBUS_TYPE_ENE]	= {
		.override	= ene_override,
		.save_state	= ti_save_state,
		.restore_state	= ti_restore_state,
		.sock_init	= ti_init,
	},
887 888
#endif
#ifdef CONFIG_YENTA_RICOH
L
Linus Torvalds 已提交
889 890 891 892 893
	[CARDBUS_TYPE_RICOH]	= {
		.override	= ricoh_override,
		.save_state	= ricoh_save_state,
		.restore_state	= ricoh_restore_state,
	},
894 895
#endif
#ifdef CONFIG_YENTA_TOSHIBA
896 897 898
	[CARDBUS_TYPE_TOPIC95]	= {
		.override	= topic95_override,
	},
L
Linus Torvalds 已提交
899 900 901
	[CARDBUS_TYPE_TOPIC97]	= {
		.override	= topic97_override,
	},
902 903
#endif
#ifdef CONFIG_YENTA_O2
L
Linus Torvalds 已提交
904 905 906 907
	[CARDBUS_TYPE_O2MICRO]	= {
		.override	= o2micro_override,
		.restore_state	= o2micro_restore_state,
	},
908
#endif
L
Linus Torvalds 已提交
909 910 911 912 913 914 915 916
};


static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
{
	int i;
	unsigned long val;
	u32 mask;
917
	u8 reg;
L
Linus Torvalds 已提交
918 919 920 921 922 923 924

	/*
	 * Probe for usable interrupts using the force
	 * register to generate bogus card status events.
	 */
	cb_writel(socket, CB_SOCKET_EVENT, -1);
	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
925
	reg = exca_readb(socket, I365_CSCINT);
L
Linus Torvalds 已提交
926 927 928 929 930 931 932 933 934 935 936
	exca_writeb(socket, I365_CSCINT, 0);
	val = probe_irq_on() & isa_irq_mask;
	for (i = 1; i < 16; i++) {
		if (!((val >> i) & 1))
			continue;
		exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
		cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
		udelay(100);
		cb_writel(socket, CB_SOCKET_EVENT, -1);
	}
	cb_writel(socket, CB_SOCKET_MASK, 0);
937
	exca_writeb(socket, I365_CSCINT, reg);
L
Linus Torvalds 已提交
938 939 940 941 942 943 944

	mask = probe_irq_mask(val) & 0xffff;

	return mask;
}


R
Randy Dunlap 已提交
945
/*
946 947 948 949 950
 * yenta PCI irq probing.
 * currently only used in the TI/EnE initialization code
 */
#ifdef CONFIG_YENTA_TI

L
Linus Torvalds 已提交
951
/* interrupt handler, only used during probing */
952
static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
L
Linus Torvalds 已提交
953 954 955
{
	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
	u8 csc;
D
Dominik Brodowski 已提交
956
	u32 cb_event;
L
Linus Torvalds 已提交
957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973

	/* Clear interrupt status for the event */
	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
	cb_writel(socket, CB_SOCKET_EVENT, -1);
	csc = exca_readb(socket, I365_CSC);

	if (cb_event || csc) {
		socket->probe_status = 1;
		return IRQ_HANDLED;
	}

	return IRQ_NONE;
}

/* probes the PCI interrupt, use only on override functions */
static int yenta_probe_cb_irq(struct yenta_socket *socket)
{
974
	u8 reg = 0;
975

L
Linus Torvalds 已提交
976 977 978 979 980
	if (!socket->cb_irq)
		return -1;

	socket->probe_status = 0;

981
	if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
982 983
		dev_printk(KERN_WARNING, &socket->dev->dev,
			   "request_irq() in yenta_probe_cb_irq() failed!\n");
L
Linus Torvalds 已提交
984 985 986 987
		return -1;
	}

	/* generate interrupt, wait */
988 989
	if (!socket->dev->irq)
		reg = exca_readb(socket, I365_CSCINT);
990
	exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
L
Linus Torvalds 已提交
991 992 993
	cb_writel(socket, CB_SOCKET_EVENT, -1);
	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
	cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
994

L
Linus Torvalds 已提交
995 996 997 998
	msleep(100);

	/* disable interrupts */
	cb_writel(socket, CB_SOCKET_MASK, 0);
999
	exca_writeb(socket, I365_CSCINT, reg);
L
Linus Torvalds 已提交
1000 1001 1002 1003 1004 1005 1006 1007
	cb_writel(socket, CB_SOCKET_EVENT, -1);
	exca_readb(socket, I365_CSC);

	free_irq(socket->cb_irq, socket);

	return (int) socket->probe_status;
}

1008
#endif /* CONFIG_YENTA_TI */
L
Linus Torvalds 已提交
1009 1010 1011 1012 1013 1014 1015 1016


/*
 * Set static data that doesn't need re-initializing..
 */
static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
{
	socket->socket.pci_irq = socket->cb_irq;
1017 1018 1019 1020
	if (isa_probe)
		socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
	else
		socket->socket.irq_mask = 0;
L
Linus Torvalds 已提交
1021

1022 1023 1024
	dev_printk(KERN_INFO, &socket->dev->dev,
		   "ISA IRQ mask 0x%04x, PCI irq %d\n",
		   socket->socket.irq_mask, socket->cb_irq);
L
Linus Torvalds 已提交
1025 1026 1027 1028 1029 1030 1031 1032 1033
}

/*
 * Initialize the standard cardbus registers
 */
static void yenta_config_init(struct yenta_socket *socket)
{
	u16 bridge;
	struct pci_dev *dev = socket->dev;
D
Dominik Brodowski 已提交
1034
	struct pci_bus_region region;
L
Linus Torvalds 已提交
1035

1036
	pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
L
Linus Torvalds 已提交
1037 1038

	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
D
Dominik Brodowski 已提交
1039
	config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
L
Linus Torvalds 已提交
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
	config_writew(socket, PCI_COMMAND,
			PCI_COMMAND_IO |
			PCI_COMMAND_MEMORY |
			PCI_COMMAND_MASTER |
			PCI_COMMAND_WAIT);

	/* MAGIC NUMBERS! Fixme */
	config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
	config_writeb(socket, PCI_LATENCY_TIMER, 168);
	config_writel(socket, PCI_PRIMARY_BUS,
		(176 << 24) |			   /* sec. latency timer */
1051 1052
		((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
		((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
L
Linus Torvalds 已提交
1053 1054 1055 1056 1057 1058 1059 1060 1061
		dev->subordinate->primary);		   /* primary bus */

	/*
	 * Set up the bridging state:
	 *  - enable write posting.
	 *  - memory window 0 prefetchable, window 1 non-prefetchable
	 *  - PCI interrupts enabled if a PCI interrupt exists..
	 */
	bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1062 1063
	bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
L
Linus Torvalds 已提交
1064 1065 1066
	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
}

1067
/**
1068
 * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1069 1070 1071 1072 1073 1074
 * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
 *
 * Checks if devices on the bus which the CardBus bridge bridges to would be
 * invisible during PCI scans because of a misconfigured subordinate number
 * of the parent brige - some BIOSes seem to be too lazy to set it right.
 * 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 1077 1078 1079 1080
 */
static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
{
	struct list_head *tmp;
	unsigned char upper_limit;
D
Dominik Brodowski 已提交
1081
	/*
1082 1083 1084 1085 1086 1087 1088
	 * We only check and fix the parent bridge: All systems which need
	 * this fixup that have been reviewed are laptops and the only bridge
	 * which needed fixing was the parent bridge of the CardBus bridge:
	 */
	struct pci_bus *bridge_to_fix = cardbus_bridge->parent;

	/* Check bus numbers are already set up correctly: */
1089
	if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
1090 1091 1092 1093 1094 1095
		return; /* The subordinate number is ok, nothing to do */

	if (!bridge_to_fix->parent)
		return; /* Root bridges are ok */

	/* stay within the limits of the bus range of the parent: */
1096
	upper_limit = bridge_to_fix->parent->busn_res.end;
1097 1098 1099

	/* check the bus ranges of all silbling bridges to prevent overlap */
	list_for_each(tmp, &bridge_to_fix->parent->children) {
D
Dominik Brodowski 已提交
1100
		struct pci_bus *silbling = pci_bus_b(tmp);
1101 1102 1103 1104 1105 1106
		/*
		 * If the silbling has a higher secondary bus number
		 * and it's secondary is equal or smaller than our
		 * current upper limit, set the new upper limit to
		 * the bus number below the silbling's range:
		 */
1107 1108 1109
		if (silbling->busn_res.start > bridge_to_fix->busn_res.end
		    && silbling->busn_res.start <= upper_limit)
			upper_limit = silbling->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 1115 1116
		dev_printk(KERN_WARNING, &cardbus_bridge->dev,
			   "Upper limit for fixing this "
			   "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 1122

		/* use the highest number of the hidden bus, within limits */
		unsigned char subordinate_to_assign =
1123
			min_t(int, cardbus_bridge->busn_res.end, upper_limit);
1124

1125 1126 1127 1128
		dev_printk(KERN_INFO, &bridge_to_fix->dev,
			   "Raising subordinate bus# of parent "
			   "bus (#%02x) from #%02x to #%02x\n",
			   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 1135

		/* and update the PCI config space with the new subordinate */
		pci_write_config_byte(bridge_to_fix->self,
1136
			PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
1137 1138 1139
	}
}

L
Linus Torvalds 已提交
1140 1141 1142 1143 1144
/*
 * Initialize a cardbus controller. Make sure we have a usable
 * interrupt, and that we can map the cardbus area. Fill in the
 * socket information structure..
 */
B
Bill Pemberton 已提交
1145
static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
L
Linus Torvalds 已提交
1146 1147 1148
{
	struct yenta_socket *socket;
	int ret;
I
Ivan Kokshaysky 已提交
1149 1150 1151 1152 1153 1154 1155

	/*
	 * If we failed to assign proper bus numbers for this cardbus
	 * controller during PCI probe, its subordinate pci_bus is NULL.
	 * Bail out if so.
	 */
	if (!dev->subordinate) {
1156 1157
		dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
			   "(try 'pci=assign-busses')\n");
I
Ivan Kokshaysky 已提交
1158 1159 1160
		return -ENODEV;
	}

1161
	socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
L
Linus Torvalds 已提交
1162 1163 1164 1165 1166 1167
	if (!socket)
		return -ENOMEM;

	/* prepare pcmcia_socket */
	socket->socket.ops = &yenta_socket_operations;
	socket->socket.resource_ops = &pccard_nonstatic_ops;
1168
	socket->socket.dev.parent = &dev->dev;
L
Linus Torvalds 已提交
1169 1170
	socket->socket.driver_data = socket;
	socket->socket.owner = THIS_MODULE;
1171 1172 1173
	socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
	socket->socket.map_size = 0x1000;
	socket->socket.cb_dev = dev;
L
Linus Torvalds 已提交
1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191

	/* prepare struct yenta_socket */
	socket->dev = dev;
	pci_set_drvdata(dev, socket);

	/*
	 * Do some basic sanity checking..
	 */
	if (pci_enable_device(dev)) {
		ret = -EBUSY;
		goto free;
	}

	ret = pci_request_regions(dev, "yenta_socket");
	if (ret)
		goto disable;

	if (!pci_resource_start(dev, 0)) {
1192
		dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
L
Linus Torvalds 已提交
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
		ret = -ENODEV;
		goto release;
	}

	/*
	 * Ok, start setup.. Map the cardbus registers,
	 * and request the IRQ.
	 */
	socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
	if (!socket->base) {
		ret = -ENOMEM;
		goto release;
	}

	/*
	 * report the subsystem vendor and device for help debugging
	 * the irq stuff...
	 */
1211 1212
	dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
		   dev->subsystem_vendor, dev->subsystem_device);
L
Linus Torvalds 已提交
1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235

	yenta_config_init(socket);

	/* Disable all events */
	cb_writel(socket, CB_SOCKET_MASK, 0x0);

	/* Set up the bridge regions.. */
	yenta_allocate_resources(socket);

	socket->cb_irq = dev->irq;

	/* Do we have special options for the device? */
	if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
	    id->driver_data < ARRAY_SIZE(cardbus_type)) {
		socket->type = &cardbus_type[id->driver_data];

		ret = socket->type->override(socket);
		if (ret < 0)
			goto unmap;
	}

	/* We must finish initialization here */

1236
	if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
L
Linus Torvalds 已提交
1237 1238 1239 1240 1241 1242 1243
		/* No IRQ or request_irq failed. Poll */
		socket->cb_irq = 0; /* But zero is a valid IRQ number. */
		init_timer(&socket->poll_timer);
		socket->poll_timer.function = yenta_interrupt_wrapper;
		socket->poll_timer.data = (unsigned long)socket;
		socket->poll_timer.expires = jiffies + HZ;
		add_timer(&socket->poll_timer);
1244 1245 1246 1247 1248 1249
		dev_printk(KERN_INFO, &dev->dev,
			   "no PCI IRQ, CardBus support disabled for this "
			   "socket.\n");
		dev_printk(KERN_INFO, &dev->dev,
			   "check your BIOS CardBus, BIOS IRQ or ACPI "
			   "settings.\n");
1250 1251
	} else {
		socket->socket.features |= SS_CAP_CARDBUS;
L
Linus Torvalds 已提交
1252 1253 1254
	}

	/* Figure out what the dang thing can do for the PCMCIA layer... */
1255
	yenta_interrogate(socket);
L
Linus Torvalds 已提交
1256
	yenta_get_socket_capabilities(socket, isa_interrupts);
1257 1258
	dev_printk(KERN_INFO, &dev->dev,
		   "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
L
Linus Torvalds 已提交
1259

1260 1261
	yenta_fixup_parent_bridge(dev->subordinate);

L
Linus Torvalds 已提交
1262 1263
	/* Register it with the pcmcia layer.. */
	ret = pcmcia_register_socket(&socket->socket);
1264 1265
	if (ret == 0) {
		/* Add the yenta register attributes */
1266 1267 1268 1269 1270 1271
		ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
		if (ret == 0)
			goto out;

		/* error path... */
		pcmcia_unregister_socket(&socket->socket);
1272
	}
L
Linus Torvalds 已提交
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285

 unmap:
	iounmap(socket->base);
 release:
	pci_release_regions(dev);
 disable:
	pci_disable_device(dev);
 free:
	kfree(socket);
 out:
	return ret;
}

1286
#ifdef CONFIG_PM
1287
static int yenta_dev_suspend_noirq(struct device *dev)
L
Linus Torvalds 已提交
1288
{
1289 1290
	struct pci_dev *pdev = to_pci_dev(dev);
	struct yenta_socket *socket = pci_get_drvdata(pdev);
L
Linus Torvalds 已提交
1291

1292
	if (!socket)
1293
		return 0;
L
Linus Torvalds 已提交
1294

1295 1296
	if (socket->type && socket->type->save_state)
		socket->type->save_state(socket);
L
Linus Torvalds 已提交
1297

1298 1299 1300 1301 1302
	pci_save_state(pdev);
	pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
	pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
	pci_disable_device(pdev);

1303
	return 0;
L
Linus Torvalds 已提交
1304 1305
}

1306
static int yenta_dev_resume_noirq(struct device *dev)
L
Linus Torvalds 已提交
1307
{
1308 1309 1310
	struct pci_dev *pdev = to_pci_dev(dev);
	struct yenta_socket *socket = pci_get_drvdata(pdev);
	int ret;
L
Linus Torvalds 已提交
1311

1312 1313
	if (!socket)
		return 0;
1314

1315 1316
	pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
	pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1317

1318 1319 1320
	ret = pci_enable_device(pdev);
	if (ret)
		return ret;
1321

1322
	pci_set_master(pdev);
L
Linus Torvalds 已提交
1323

1324 1325
	if (socket->type && socket->type->restore_state)
		socket->type->restore_state(socket);
L
Linus Torvalds 已提交
1326

1327
	return 0;
L
Linus Torvalds 已提交
1328
}
1329

1330
static const struct dev_pm_ops yenta_pm_ops = {
1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
	.suspend_noirq = yenta_dev_suspend_noirq,
	.resume_noirq = yenta_dev_resume_noirq,
	.freeze_noirq = yenta_dev_suspend_noirq,
	.thaw_noirq = yenta_dev_resume_noirq,
	.poweroff_noirq = yenta_dev_suspend_noirq,
	.restore_noirq = yenta_dev_resume_noirq,
};

#define YENTA_PM_OPS	(&yenta_pm_ops)
#else
#define YENTA_PM_OPS	NULL
1342
#endif
L
Linus Torvalds 已提交
1343

D
Dominik Brodowski 已提交
1344
#define CB_ID(vend, dev, type)				\
L
Linus Torvalds 已提交
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
	{						\
		.vendor		= vend,			\
		.device		= dev,			\
		.subvendor	= PCI_ANY_ID,		\
		.subdevice	= PCI_ANY_ID,		\
		.class		= PCI_CLASS_BRIDGE_CARDBUS << 8, \
		.class_mask	= ~0,			\
		.driver_data	= CARDBUS_TYPE_##type,	\
	}

1355
static DEFINE_PCI_DEVICE_TABLE(yenta_table) = {
L
Linus Torvalds 已提交
1356 1357 1358 1359 1360 1361 1362
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),

	/*
	 * TBD: Check if these TI variants can use more
	 * advanced overrides instead.  (I can't get the
	 * data sheets for these devices. --rmk)
	 */
1363
#ifdef CONFIG_YENTA_TI
L
Linus Torvalds 已提交
1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),

	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),

	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),

	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),

1390 1391
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1392
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1393 1394 1395 1396 1397 1398
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),

1399 1400 1401 1402
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1403 1404 1405 1406
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1407
#endif /* CONFIG_YENTA_TI */
L
Linus Torvalds 已提交
1408

1409
#ifdef CONFIG_YENTA_RICOH
L
Linus Torvalds 已提交
1410 1411 1412 1413 1414
	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1415
#endif
L
Linus Torvalds 已提交
1416

1417
#ifdef CONFIG_YENTA_TOSHIBA
1418
	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
L
Linus Torvalds 已提交
1419 1420
	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1421
#endif
L
Linus Torvalds 已提交
1422

1423
#ifdef CONFIG_YENTA_O2
L
Linus Torvalds 已提交
1424
	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1425
#endif
L
Linus Torvalds 已提交
1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437

	/* match any cardbus bridge */
	CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
	{ /* all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, yenta_table);


static struct pci_driver yenta_cardbus_driver = {
	.name		= "yenta_cardbus",
	.id_table	= yenta_table,
	.probe		= yenta_probe,
B
Bill Pemberton 已提交
1438
	.remove		= yenta_close,
1439
	.driver.pm	= YENTA_PM_OPS,
L
Linus Torvalds 已提交
1440 1441
};

1442
module_pci_driver(yenta_cardbus_driver);
L
Linus Torvalds 已提交
1443 1444

MODULE_LICENSE("GPL");