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/drivers/pcmcia/yenta_socket.c

https://bitbucket.org/evzijst/gittest
C | 1160 lines | 839 code | 194 blank | 127 comment | 104 complexity | ef7ab52218a2bda9237556859a1c0142 MD5 | raw file
   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/sched.h>
  16#include <linux/workqueue.h>
  17#include <linux/interrupt.h>
  18#include <linux/delay.h>
  19#include <linux/module.h>
  20
  21#include <pcmcia/version.h>
  22#include <pcmcia/cs_types.h>
  23#include <pcmcia/ss.h>
  24#include <pcmcia/cs.h>
  25
  26#include <asm/io.h>
  27
  28#include "yenta_socket.h"
  29#include "i82365.h"
  30
  31static int disable_clkrun;
  32module_param(disable_clkrun, bool, 0444);
  33MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
  34
  35#if 0
  36#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
  37#else
  38#define debug(x,args...)
  39#endif
  40
  41/* Don't ask.. */
  42#define to_cycles(ns)	((ns)/120)
  43#define to_ns(cycles)	((cycles)*120)
  44
  45static int yenta_probe_cb_irq(struct yenta_socket *socket);
  46
  47
  48static unsigned int override_bios;
  49module_param(override_bios, uint, 0000);
  50MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation");
  51
  52/*
  53 * Generate easy-to-use ways of reading a cardbus sockets
  54 * regular memory space ("cb_xxx"), configuration space
  55 * ("config_xxx") and compatibility space ("exca_xxxx")
  56 */
  57static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
  58{
  59	u32 val = readl(socket->base + reg);
  60	debug("%p %04x %08x\n", socket, reg, val);
  61	return val;
  62}
  63
  64static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  65{
  66	debug("%p %04x %08x\n", socket, reg, val);
  67	writel(val, socket->base + reg);
  68}
  69
  70static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  71{
  72	u8 val;
  73	pci_read_config_byte(socket->dev, offset, &val);
  74	debug("%p %04x %02x\n", socket, offset, val);
  75	return val;
  76}
  77
  78static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
  79{
  80	u16 val;
  81	pci_read_config_word(socket->dev, offset, &val);
  82	debug("%p %04x %04x\n", socket, offset, val);
  83	return val;
  84}
  85
  86static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
  87{
  88	u32 val;
  89	pci_read_config_dword(socket->dev, offset, &val);
  90	debug("%p %04x %08x\n", socket, offset, val);
  91	return val;
  92}
  93
  94static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
  95{
  96	debug("%p %04x %02x\n", socket, offset, val);
  97	pci_write_config_byte(socket->dev, offset, val);
  98}
  99
 100static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
 101{
 102	debug("%p %04x %04x\n", socket, offset, val);
 103	pci_write_config_word(socket->dev, offset, val);
 104}
 105
 106static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
 107{
 108	debug("%p %04x %08x\n", socket, offset, val);
 109	pci_write_config_dword(socket->dev, offset, val);
 110}
 111
 112static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
 113{
 114	u8 val = readb(socket->base + 0x800 + reg);
 115	debug("%p %04x %02x\n", socket, reg, val);
 116	return val;
 117}
 118
 119static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
 120{
 121	u16 val;
 122	val = readb(socket->base + 0x800 + reg);
 123	val |= readb(socket->base + 0x800 + reg + 1) << 8;
 124	debug("%p %04x %04x\n", socket, reg, val);
 125	return val;
 126}
 127
 128static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
 129{
 130	debug("%p %04x %02x\n", socket, reg, val);
 131	writeb(val, socket->base + 0x800 + reg);
 132}
 133
 134static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
 135{
 136	debug("%p %04x %04x\n", socket, reg, val);
 137	writeb(val, socket->base + 0x800 + reg);
 138	writeb(val >> 8, socket->base + 0x800 + reg + 1);
 139}
 140
 141/*
 142 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
 143 * on what kind of card is inserted..
 144 */
 145static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
 146{
 147	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 148	unsigned int val;
 149	u32 state = cb_readl(socket, CB_SOCKET_STATE);
 150
 151	val  = (state & CB_3VCARD) ? SS_3VCARD : 0;
 152	val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
 153	val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD
 154			 | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
 155
 156	if (state & CB_CBCARD) {
 157		val |= SS_CARDBUS;	
 158		val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
 159		val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
 160		val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
 161	} else {
 162		u8 status = exca_readb(socket, I365_STATUS);
 163		val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
 164		if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 165			val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
 166		} else {
 167			val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
 168			val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
 169		}
 170		val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
 171		val |= (status & I365_CS_READY) ? SS_READY : 0;
 172		val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
 173	}
 174
 175	*value = val;
 176	return 0;
 177}
 178
 179static int yenta_Vcc_power(u32 control)
 180{
 181	switch (control & CB_SC_VCC_MASK) {
 182	case CB_SC_VCC_5V: return 50;
 183	case CB_SC_VCC_3V: return 33;
 184	default: return 0;
 185	}
 186}
 187
 188static int yenta_Vpp_power(u32 control)
 189{
 190	switch (control & CB_SC_VPP_MASK) {
 191	case CB_SC_VPP_12V: return 120;
 192	case CB_SC_VPP_5V: return 50;
 193	case CB_SC_VPP_3V: return 33;
 194	default: return 0;
 195	}
 196}
 197
 198static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 199{
 200	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 201	u8 reg;
 202	u32 control;
 203
 204	control = cb_readl(socket, CB_SOCKET_CONTROL);
 205
 206	state->Vcc = yenta_Vcc_power(control);
 207	state->Vpp = yenta_Vpp_power(control);
 208	state->io_irq = socket->io_irq;
 209
 210	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
 211		u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
 212		if (bridge & CB_BRIDGE_CRST)
 213			state->flags |= SS_RESET;
 214		return 0;
 215	}
 216
 217	/* 16-bit card state.. */
 218	reg = exca_readb(socket, I365_POWER);
 219	state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
 220	state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
 221
 222	reg = exca_readb(socket, I365_INTCTL);
 223	state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
 224	state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
 225
 226	reg = exca_readb(socket, I365_CSCINT);
 227	state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
 228	if (state->flags & SS_IOCARD) {
 229		state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 230	} else {
 231		state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 232		state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
 233		state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
 234	}
 235
 236	return 0;
 237}
 238
 239static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
 240{
 241	u32 reg = 0;	/* CB_SC_STPCLK? */
 242	switch (state->Vcc) {
 243	case 33: reg = CB_SC_VCC_3V; break;
 244	case 50: reg = CB_SC_VCC_5V; break;
 245	default: reg = 0; break;
 246	}
 247	switch (state->Vpp) {
 248	case 33:  reg |= CB_SC_VPP_3V; break;
 249	case 50:  reg |= CB_SC_VPP_5V; break;
 250	case 120: reg |= CB_SC_VPP_12V; break;
 251	}
 252	if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
 253		cb_writel(socket, CB_SOCKET_CONTROL, reg);
 254}
 255
 256static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 257{
 258	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 259	u16 bridge;
 260
 261	yenta_set_power(socket, state);
 262	socket->io_irq = state->io_irq;
 263	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
 264	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
 265		u8 intr;
 266		bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
 267
 268		/* ISA interrupt control? */
 269		intr = exca_readb(socket, I365_INTCTL);
 270		intr = (intr & ~0xf);
 271		if (!socket->cb_irq) {
 272			intr |= state->io_irq;
 273			bridge |= CB_BRIDGE_INTR;
 274		}
 275		exca_writeb(socket, I365_INTCTL, intr);
 276	}  else {
 277		u8 reg;
 278
 279		reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
 280		reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
 281		reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
 282		if (state->io_irq != socket->cb_irq) {
 283			reg |= state->io_irq;
 284			bridge |= CB_BRIDGE_INTR;
 285		}
 286		exca_writeb(socket, I365_INTCTL, reg);
 287
 288		reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
 289		reg |= I365_PWR_NORESET;
 290		if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO;
 291		if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT;
 292		if (exca_readb(socket, I365_POWER) != reg)
 293			exca_writeb(socket, I365_POWER, reg);
 294
 295		/* CSC interrupt: no ISA irq for CSC */
 296		reg = I365_CSC_DETECT;
 297		if (state->flags & SS_IOCARD) {
 298			if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG;
 299		} else {
 300			if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1;
 301			if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2;
 302			if (state->csc_mask & SS_READY) reg |= I365_CSC_READY;
 303		}
 304		exca_writeb(socket, I365_CSCINT, reg);
 305		exca_readb(socket, I365_CSC);
 306		if(sock->zoom_video)
 307			sock->zoom_video(sock, state->flags & SS_ZVCARD);
 308	}
 309	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 310	/* Socket event mask: get card insert/remove events.. */
 311	cb_writel(socket, CB_SOCKET_EVENT, -1);
 312	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 313	return 0;
 314}
 315
 316static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 317{
 318	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 319	int map;
 320	unsigned char ioctl, addr, enable;
 321
 322	map = io->map;
 323
 324	if (map > 1)
 325		return -EINVAL;
 326
 327	enable = I365_ENA_IO(map);
 328	addr = exca_readb(socket, I365_ADDRWIN);
 329
 330	/* Disable the window before changing it.. */
 331	if (addr & enable) {
 332		addr &= ~enable;
 333		exca_writeb(socket, I365_ADDRWIN, addr);
 334	}
 335
 336	exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
 337	exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
 338
 339	ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 340	if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 341	if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 342	if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 343	exca_writeb(socket, I365_IOCTL, ioctl);
 344
 345	if (io->flags & MAP_ACTIVE)
 346		exca_writeb(socket, I365_ADDRWIN, addr | enable);
 347	return 0;
 348}
 349
 350static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 351{
 352	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 353	struct pci_bus_region region;
 354	int map;
 355	unsigned char addr, enable;
 356	unsigned int start, stop, card_start;
 357	unsigned short word;
 358
 359	pcibios_resource_to_bus(socket->dev, &region, mem->res);
 360
 361	map = mem->map;
 362	start = region.start;
 363	stop = region.end;
 364	card_start = mem->card_start;
 365
 366	if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
 367	    (card_start >> 26) || mem->speed > 1000)
 368		return -EINVAL;
 369
 370	enable = I365_ENA_MEM(map);
 371	addr = exca_readb(socket, I365_ADDRWIN);
 372	if (addr & enable) {
 373		addr &= ~enable;
 374		exca_writeb(socket, I365_ADDRWIN, addr);
 375	}
 376
 377	exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
 378
 379	word = (start >> 12) & 0x0fff;
 380	if (mem->flags & MAP_16BIT)
 381		word |= I365_MEM_16BIT;
 382	if (mem->flags & MAP_0WS)
 383		word |= I365_MEM_0WS;
 384	exca_writew(socket, I365_MEM(map) + I365_W_START, word);
 385
 386	word = (stop >> 12) & 0x0fff;
 387	switch (to_cycles(mem->speed)) {
 388		case 0: break;
 389		case 1:  word |= I365_MEM_WS0; break;
 390		case 2:  word |= I365_MEM_WS1; break;
 391		default: word |= I365_MEM_WS1 | I365_MEM_WS0; break;
 392	}
 393	exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
 394
 395	word = ((card_start - start) >> 12) & 0x3fff;
 396	if (mem->flags & MAP_WRPROT)
 397		word |= I365_MEM_WRPROT;
 398	if (mem->flags & MAP_ATTRIB)
 399		word |= I365_MEM_REG;
 400	exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
 401
 402	if (mem->flags & MAP_ACTIVE)
 403		exca_writeb(socket, I365_ADDRWIN, addr | enable);
 404	return 0;
 405}
 406
 407
 408static unsigned int yenta_events(struct yenta_socket *socket)
 409{
 410	u8 csc;
 411	u32 cb_event;
 412	unsigned int events;
 413
 414	/* Clear interrupt status for the event */
 415	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 416	cb_writel(socket, CB_SOCKET_EVENT, cb_event);
 417
 418	csc = exca_readb(socket, I365_CSC);
 419
 420	events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
 421	events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
 422	if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
 423		events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 424	} else {
 425		events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 426		events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 427		events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 428	}
 429	return events;
 430}
 431
 432
 433static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 434{
 435	unsigned int events;
 436	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 437
 438	events = yenta_events(socket);
 439	if (events) {
 440		pcmcia_parse_events(&socket->socket, events);
 441		return IRQ_HANDLED;
 442	}
 443	return IRQ_NONE;
 444}
 445
 446static void yenta_interrupt_wrapper(unsigned long data)
 447{
 448	struct yenta_socket *socket = (struct yenta_socket *) data;
 449
 450	yenta_interrupt(0, (void *)socket, NULL);
 451	socket->poll_timer.expires = jiffies + HZ;
 452	add_timer(&socket->poll_timer);
 453}
 454
 455static void yenta_clear_maps(struct yenta_socket *socket)
 456{
 457	int i;
 458	struct resource res = { .start = 0, .end = 0x0fff };
 459	pccard_io_map io = { 0, 0, 0, 0, 1 };
 460	pccard_mem_map mem = { .res = &res, };
 461
 462	yenta_set_socket(&socket->socket, &dead_socket);
 463	for (i = 0; i < 2; i++) {
 464		io.map = i;
 465		yenta_set_io_map(&socket->socket, &io);
 466	}
 467	for (i = 0; i < 5; i++) {
 468		mem.map = i;
 469		yenta_set_mem_map(&socket->socket, &mem);
 470	}
 471}
 472
 473/* Called at resume and initialization events */
 474static int yenta_sock_init(struct pcmcia_socket *sock)
 475{
 476	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 477	u32 state;
 478	u16 bridge;
 479
 480	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
 481	if (!socket->cb_irq)
 482		bridge |= CB_BRIDGE_INTR;
 483	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 484
 485	exca_writeb(socket, I365_GBLCTL, 0x00);
 486	exca_writeb(socket, I365_GENCTL, 0x00);
 487
 488	/* Redo card voltage interrogation */
 489	state = cb_readl(socket, CB_SOCKET_STATE);
 490	if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD |
 491	               CB_3VCARD | CB_XVCARD | CB_YVCARD)))
 492		cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
 493
 494	yenta_clear_maps(socket);
 495
 496	if (socket->type && socket->type->sock_init)
 497		socket->type->sock_init(socket);
 498
 499	/* Re-enable CSC interrupts */
 500	cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
 501
 502	return 0;
 503}
 504
 505static int yenta_sock_suspend(struct pcmcia_socket *sock)
 506{
 507	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 508
 509	/* Disable CSC interrupts */
 510	cb_writel(socket, CB_SOCKET_MASK, 0x0);
 511
 512	return 0;
 513}
 514
 515/*
 516 * Use an adaptive allocation for the memory resource,
 517 * sometimes the memory behind pci bridges is limited:
 518 * 1/8 of the size of the io window of the parent.
 519 * max 4 MB, min 16 kB.
 520 */
 521#define BRIDGE_MEM_MAX 4*1024*1024
 522#define BRIDGE_MEM_MIN 16*1024
 523
 524#define BRIDGE_IO_MAX 256
 525#define BRIDGE_IO_MIN 32
 526
 527#ifndef PCIBIOS_MIN_CARDBUS_IO
 528#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
 529#endif
 530
 531static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type)
 532{
 533	struct pci_bus *bus;
 534	struct resource *root, *res;
 535	u32 start, end;
 536	u32 align, size, min;
 537	unsigned offset;
 538	unsigned mask;
 539
 540	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
 541	mask = ~0xfff;
 542	if (type & IORESOURCE_IO)
 543		mask = ~3;
 544
 545	offset = 0x1c + 8*nr;
 546	bus = socket->dev->subordinate;
 547	res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
 548	res->name = bus->name;
 549	res->flags = type;
 550	res->start = 0;
 551	res->end = 0;
 552	root = pci_find_parent_resource(socket->dev, res);
 553
 554	if (!root)
 555		return;
 556
 557	start = config_readl(socket, offset) & mask;
 558	end = config_readl(socket, offset+4) | ~mask;
 559	if (start && end > start && !override_bios) {
 560		res->start = start;
 561		res->end = end;
 562		if (request_resource(root, res) == 0)
 563			return;
 564		printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n",
 565				pci_name(socket->dev), nr);
 566		res->start = res->end = 0;
 567	}
 568
 569	if (type & IORESOURCE_IO) {
 570		align = 1024;
 571		size = BRIDGE_IO_MAX;
 572		min = BRIDGE_IO_MIN;
 573		start = PCIBIOS_MIN_CARDBUS_IO;
 574		end = ~0U;
 575	} else {
 576		unsigned long avail = root->end - root->start;
 577		int i;
 578		size = BRIDGE_MEM_MAX;
 579		if (size > avail/8) {
 580			size=(avail+1)/8;
 581			/* round size down to next power of 2 */
 582			i = 0;
 583			while ((size /= 2) != 0)
 584				i++;
 585			size = 1 << i;
 586		}
 587		if (size < BRIDGE_MEM_MIN)
 588			size = BRIDGE_MEM_MIN;
 589		min = BRIDGE_MEM_MIN;
 590		align = size;
 591		start = PCIBIOS_MIN_MEM;
 592		end = ~0U;
 593	}
 594	
 595	do {
 596		if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) {
 597			config_writel(socket, offset, res->start);
 598			config_writel(socket, offset+4, res->end);
 599			return;
 600		}
 601		size = size/2;
 602		align = size;
 603	} while (size >= min);
 604	printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
 605			pci_name(socket->dev), type);
 606	res->start = res->end = 0;
 607}
 608
 609/*
 610 * Allocate the bridge mappings for the device..
 611 */
 612static void yenta_allocate_resources(struct yenta_socket *socket)
 613{
 614	yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH);
 615	yenta_allocate_res(socket, 1, IORESOURCE_MEM);
 616	yenta_allocate_res(socket, 2, IORESOURCE_IO);
 617	yenta_allocate_res(socket, 3, IORESOURCE_IO);	/* PCI isn't clever enough to use this one yet */
 618}
 619
 620
 621/*
 622 * Free the bridge mappings for the device..
 623 */
 624static void yenta_free_resources(struct yenta_socket *socket)
 625{
 626	int i;
 627	for (i=0;i<4;i++) {
 628		struct resource *res;
 629		res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
 630		if (res->start != 0 && res->end != 0)
 631			release_resource(res);
 632		res->start = res->end = 0;
 633	}
 634}
 635
 636
 637/*
 638 * Close it down - release our resources and go home..
 639 */
 640static void yenta_close(struct pci_dev *dev)
 641{
 642	struct yenta_socket *sock = pci_get_drvdata(dev);
 643
 644	/* we don't want a dying socket registered */
 645	pcmcia_unregister_socket(&sock->socket);
 646	
 647	/* Disable all events so we don't die in an IRQ storm */
 648	cb_writel(sock, CB_SOCKET_MASK, 0x0);
 649	exca_writeb(sock, I365_CSCINT, 0);
 650
 651	if (sock->cb_irq)
 652		free_irq(sock->cb_irq, sock);
 653	else
 654		del_timer_sync(&sock->poll_timer);
 655
 656	if (sock->base)
 657		iounmap(sock->base);
 658	yenta_free_resources(sock);
 659
 660	pci_release_regions(dev);
 661	pci_disable_device(dev);
 662	pci_set_drvdata(dev, NULL);
 663}
 664
 665
 666static struct pccard_operations yenta_socket_operations = {
 667	.init			= yenta_sock_init,
 668	.suspend		= yenta_sock_suspend,
 669	.get_status		= yenta_get_status,
 670	.get_socket		= yenta_get_socket,
 671	.set_socket		= yenta_set_socket,
 672	.set_io_map		= yenta_set_io_map,
 673	.set_mem_map		= yenta_set_mem_map,
 674};
 675
 676
 677#include "ti113x.h"
 678#include "ricoh.h"
 679#include "topic.h"
 680#include "o2micro.h"
 681
 682enum {
 683	CARDBUS_TYPE_DEFAULT = -1,
 684	CARDBUS_TYPE_TI,
 685	CARDBUS_TYPE_TI113X,
 686	CARDBUS_TYPE_TI12XX,
 687	CARDBUS_TYPE_TI1250,
 688	CARDBUS_TYPE_RICOH,
 689	CARDBUS_TYPE_TOPIC97,
 690	CARDBUS_TYPE_O2MICRO,
 691};
 692
 693/*
 694 * Different cardbus controllers have slightly different
 695 * initialization sequences etc details. List them here..
 696 */
 697static struct cardbus_type cardbus_type[] = {
 698	[CARDBUS_TYPE_TI]	= {
 699		.override	= ti_override,
 700		.save_state	= ti_save_state,
 701		.restore_state	= ti_restore_state,
 702		.sock_init	= ti_init,
 703	},
 704	[CARDBUS_TYPE_TI113X]	= {
 705		.override	= ti113x_override,
 706		.save_state	= ti_save_state,
 707		.restore_state	= ti_restore_state,
 708		.sock_init	= ti_init,
 709	},
 710	[CARDBUS_TYPE_TI12XX]	= {
 711		.override	= ti12xx_override,
 712		.save_state	= ti_save_state,
 713		.restore_state	= ti_restore_state,
 714		.sock_init	= ti_init,
 715	},
 716	[CARDBUS_TYPE_TI1250]	= {
 717		.override	= ti1250_override,
 718		.save_state	= ti_save_state,
 719		.restore_state	= ti_restore_state,
 720		.sock_init	= ti_init,
 721	},
 722	[CARDBUS_TYPE_RICOH]	= {
 723		.override	= ricoh_override,
 724		.save_state	= ricoh_save_state,
 725		.restore_state	= ricoh_restore_state,
 726	},
 727	[CARDBUS_TYPE_TOPIC97]	= {
 728		.override	= topic97_override,
 729	},
 730	[CARDBUS_TYPE_O2MICRO]	= {
 731		.override	= o2micro_override,
 732		.restore_state	= o2micro_restore_state,
 733	},
 734};
 735
 736
 737/*
 738 * Only probe "regular" interrupts, don't
 739 * touch dangerous spots like the mouse irq,
 740 * because there are mice that apparently
 741 * get really confused if they get fondled
 742 * too intimately.
 743 *
 744 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
 745 */
 746static u32 isa_interrupts = 0x0ef8;
 747
 748static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
 749{
 750	int i;
 751	unsigned long val;
 752	u16 bridge_ctrl;
 753	u32 mask;
 754
 755	/* Set up ISA irq routing to probe the ISA irqs.. */
 756	bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
 757	if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
 758		bridge_ctrl |= CB_BRIDGE_INTR;
 759		config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
 760	}
 761
 762	/*
 763	 * Probe for usable interrupts using the force
 764	 * register to generate bogus card status events.
 765	 */
 766	cb_writel(socket, CB_SOCKET_EVENT, -1);
 767	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 768	exca_writeb(socket, I365_CSCINT, 0);
 769	val = probe_irq_on() & isa_irq_mask;
 770	for (i = 1; i < 16; i++) {
 771		if (!((val >> i) & 1))
 772			continue;
 773		exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
 774		cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 775		udelay(100);
 776		cb_writel(socket, CB_SOCKET_EVENT, -1);
 777	}
 778	cb_writel(socket, CB_SOCKET_MASK, 0);
 779	exca_writeb(socket, I365_CSCINT, 0);
 780
 781	mask = probe_irq_mask(val) & 0xffff;
 782
 783	bridge_ctrl &= ~CB_BRIDGE_INTR;
 784	config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
 785
 786	return mask;
 787}
 788
 789
 790/* interrupt handler, only used during probing */
 791static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
 792{
 793	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
 794	u8 csc;
 795        u32 cb_event;
 796
 797	/* Clear interrupt status for the event */
 798	cb_event = cb_readl(socket, CB_SOCKET_EVENT);
 799	cb_writel(socket, CB_SOCKET_EVENT, -1);
 800	csc = exca_readb(socket, I365_CSC);
 801
 802	if (cb_event || csc) {
 803		socket->probe_status = 1;
 804		return IRQ_HANDLED;
 805	}
 806
 807	return IRQ_NONE;
 808}
 809
 810/* probes the PCI interrupt, use only on override functions */
 811static int yenta_probe_cb_irq(struct yenta_socket *socket)
 812{
 813	u16 bridge_ctrl;
 814
 815	if (!socket->cb_irq)
 816		return -1;
 817
 818	socket->probe_status = 0;
 819
 820	/* disable ISA interrupts */
 821	bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
 822	bridge_ctrl &= ~CB_BRIDGE_INTR;
 823	config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
 824
 825	if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
 826		printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
 827		return -1;
 828	}
 829
 830	/* generate interrupt, wait */
 831	exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
 832	cb_writel(socket, CB_SOCKET_EVENT, -1);
 833	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 834	cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
 835	
 836	msleep(100);
 837
 838	/* disable interrupts */
 839	cb_writel(socket, CB_SOCKET_MASK, 0);
 840	exca_writeb(socket, I365_CSCINT, 0);
 841	cb_writel(socket, CB_SOCKET_EVENT, -1);
 842	exca_readb(socket, I365_CSC);
 843
 844	free_irq(socket->cb_irq, socket);
 845
 846	return (int) socket->probe_status;
 847}
 848
 849
 850
 851/*
 852 * Set static data that doesn't need re-initializing..
 853 */
 854static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
 855{
 856	socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
 857	socket->socket.map_size = 0x1000;
 858	socket->socket.pci_irq = socket->cb_irq;
 859	socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
 860	socket->socket.cb_dev = socket->dev;
 861
 862	printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
 863	       socket->socket.irq_mask, socket->cb_irq);
 864}
 865
 866/*
 867 * Initialize the standard cardbus registers
 868 */
 869static void yenta_config_init(struct yenta_socket *socket)
 870{
 871	u16 bridge;
 872	struct pci_dev *dev = socket->dev;
 873
 874	pci_set_power_state(socket->dev, 0);
 875
 876	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
 877	config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start);
 878	config_writew(socket, PCI_COMMAND,
 879			PCI_COMMAND_IO |
 880			PCI_COMMAND_MEMORY |
 881			PCI_COMMAND_MASTER |
 882			PCI_COMMAND_WAIT);
 883
 884	/* MAGIC NUMBERS! Fixme */
 885	config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
 886	config_writeb(socket, PCI_LATENCY_TIMER, 168);
 887	config_writel(socket, PCI_PRIMARY_BUS,
 888		(176 << 24) |			   /* sec. latency timer */
 889		(dev->subordinate->subordinate << 16) | /* subordinate bus */
 890		(dev->subordinate->secondary << 8) |  /* secondary bus */
 891		dev->subordinate->primary);		   /* primary bus */
 892
 893	/*
 894	 * Set up the bridging state:
 895	 *  - enable write posting.
 896	 *  - memory window 0 prefetchable, window 1 non-prefetchable
 897	 *  - PCI interrupts enabled if a PCI interrupt exists..
 898	 */
 899	bridge = config_readw(socket, CB_BRIDGE_CONTROL);
 900	bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
 901	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
 902	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
 903}
 904
 905/*
 906 * Initialize a cardbus controller. Make sure we have a usable
 907 * interrupt, and that we can map the cardbus area. Fill in the
 908 * socket information structure..
 909 */
 910static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
 911{
 912	struct yenta_socket *socket;
 913	int ret;
 914	
 915	socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
 916	if (!socket)
 917		return -ENOMEM;
 918	memset(socket, 0, sizeof(*socket));
 919
 920	/* prepare pcmcia_socket */
 921	socket->socket.ops = &yenta_socket_operations;
 922	socket->socket.resource_ops = &pccard_nonstatic_ops;
 923	socket->socket.dev.dev = &dev->dev;
 924	socket->socket.driver_data = socket;
 925	socket->socket.owner = THIS_MODULE;
 926
 927	/* prepare struct yenta_socket */
 928	socket->dev = dev;
 929	pci_set_drvdata(dev, socket);
 930
 931	/*
 932	 * Do some basic sanity checking..
 933	 */
 934	if (pci_enable_device(dev)) {
 935		ret = -EBUSY;
 936		goto free;
 937	}
 938
 939	ret = pci_request_regions(dev, "yenta_socket");
 940	if (ret)
 941		goto disable;
 942
 943	if (!pci_resource_start(dev, 0)) {
 944		printk(KERN_ERR "No cardbus resource!\n");
 945		ret = -ENODEV;
 946		goto release;
 947	}
 948
 949	/*
 950	 * Ok, start setup.. Map the cardbus registers,
 951	 * and request the IRQ.
 952	 */
 953	socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
 954	if (!socket->base) {
 955		ret = -ENOMEM;
 956		goto release;
 957	}
 958
 959	/*
 960	 * report the subsystem vendor and device for help debugging
 961	 * the irq stuff...
 962	 */
 963	printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
 964		pci_name(dev), dev->subsystem_vendor, dev->subsystem_device);
 965
 966	yenta_config_init(socket);
 967
 968	/* Disable all events */
 969	cb_writel(socket, CB_SOCKET_MASK, 0x0);
 970
 971	/* Set up the bridge regions.. */
 972	yenta_allocate_resources(socket);
 973
 974	socket->cb_irq = dev->irq;
 975
 976	/* Do we have special options for the device? */
 977	if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
 978	    id->driver_data < ARRAY_SIZE(cardbus_type)) {
 979		socket->type = &cardbus_type[id->driver_data];
 980
 981		ret = socket->type->override(socket);
 982		if (ret < 0)
 983			goto unmap;
 984	}
 985
 986	/* We must finish initialization here */
 987
 988	if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) {
 989		/* No IRQ or request_irq failed. Poll */
 990		socket->cb_irq = 0; /* But zero is a valid IRQ number. */
 991		init_timer(&socket->poll_timer);
 992		socket->poll_timer.function = yenta_interrupt_wrapper;
 993		socket->poll_timer.data = (unsigned long)socket;
 994		socket->poll_timer.expires = jiffies + HZ;
 995		add_timer(&socket->poll_timer);
 996	}
 997
 998	/* Figure out what the dang thing can do for the PCMCIA layer... */
 999	yenta_get_socket_capabilities(socket, isa_interrupts);
1000	printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1001
1002	/* Register it with the pcmcia layer.. */
1003	ret = pcmcia_register_socket(&socket->socket);
1004	if (ret == 0)
1005		goto out;
1006
1007 unmap:
1008	iounmap(socket->base);
1009 release:
1010	pci_release_regions(dev);
1011 disable:
1012	pci_disable_device(dev);
1013 free:
1014	kfree(socket);
1015 out:
1016	return ret;
1017}
1018
1019
1020static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
1021{
1022	struct yenta_socket *socket = pci_get_drvdata(dev);
1023	int ret;
1024
1025	ret = pcmcia_socket_dev_suspend(&dev->dev, state);
1026
1027	if (socket) {
1028		if (socket->type && socket->type->save_state)
1029			socket->type->save_state(socket);
1030
1031		/* FIXME: pci_save_state needs to have a better interface */
1032		pci_save_state(dev);
1033		pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
1034		pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
1035
1036		/*
1037		 * Some laptops (IBM T22) do not like us putting the Cardbus
1038		 * bridge into D3.  At a guess, some other laptop will
1039		 * probably require this, so leave it commented out for now.
1040		 */
1041		/* pci_set_power_state(dev, 3); */
1042	}
1043
1044	return ret;
1045}
1046
1047
1048static int yenta_dev_resume (struct pci_dev *dev)
1049{
1050	struct yenta_socket *socket = pci_get_drvdata(dev);
1051
1052	if (socket) {
1053		pci_set_power_state(dev, 0);
1054		/* FIXME: pci_restore_state needs to have a better interface */
1055		pci_restore_state(dev);
1056		pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
1057		pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
1058
1059		if (socket->type && socket->type->restore_state)
1060			socket->type->restore_state(socket);
1061	}
1062
1063	return pcmcia_socket_dev_resume(&dev->dev);
1064}
1065
1066
1067#define CB_ID(vend,dev,type)				\
1068	{						\
1069		.vendor		= vend,			\
1070		.device		= dev,			\
1071		.subvendor	= PCI_ANY_ID,		\
1072		.subdevice	= PCI_ANY_ID,		\
1073		.class		= PCI_CLASS_BRIDGE_CARDBUS << 8, \
1074		.class_mask	= ~0,			\
1075		.driver_data	= CARDBUS_TYPE_##type,	\
1076	}
1077
1078static struct pci_device_id yenta_table [] = {
1079	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1080
1081	/*
1082	 * TBD: Check if these TI variants can use more
1083	 * advanced overrides instead.  (I can't get the
1084	 * data sheets for these devices. --rmk)
1085	 */
1086	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1087
1088	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1089	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1090
1091	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1092	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1093	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1094	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1095	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1096	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1097	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1098	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1099	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1100	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1101	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1102	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1103	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1104	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1105	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1106	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1107	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1108
1109	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1110	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1111
1112	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
1113	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
1114	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
1115	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
1116
1117	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1118	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1119	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1120	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1121	CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1122
1123	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1124	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1125
1126	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1127
1128	/* match any cardbus bridge */
1129	CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1130	{ /* all zeroes */ }
1131};
1132MODULE_DEVICE_TABLE(pci, yenta_table);
1133
1134
1135static struct pci_driver yenta_cardbus_driver = {
1136	.name		= "yenta_cardbus",
1137	.id_table	= yenta_table,
1138	.probe		= yenta_probe,
1139	.remove		= __devexit_p(yenta_close),
1140	.suspend	= yenta_dev_suspend,
1141	.resume		= yenta_dev_resume,
1142};
1143
1144
1145static int __init yenta_socket_init(void)
1146{
1147	return pci_register_driver (&yenta_cardbus_driver);
1148}
1149
1150
1151static void __exit yenta_socket_exit (void)
1152{
1153	pci_unregister_driver (&yenta_cardbus_driver);
1154}
1155
1156
1157module_init(yenta_socket_init);
1158module_exit(yenta_socket_exit);
1159
1160MODULE_LICENSE("GPL");