/*
   * 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
   *
   * 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>
  #include <linux/io.h>
  #include <linux/slab.h>
  
  #include <pcmcia/ss.h>
  
  #include "yenta_socket.h"
  #include "i82365.h"
  
  static bool disable_clkrun;
  module_param(disable_clkrun, bool, 0444);
  MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
  
  static bool isa_probe = 1;
  module_param(isa_probe, bool, 0444);
  MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
  
  static bool pwr_irqs_off;
  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!");
  
  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)");
  
  /*
   * 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;
  
  
  #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
  
  /* Don't ask.. */
  #define to_cycles(ns)	((ns)/120)
  #define to_ns(cycles)	((cycles)*120)
  
  /*
   * yenta PCI irq probing.
   * currently only used in the TI/EnE initialization code
   */
  #ifdef CONFIG_YENTA_TI
  static int yenta_probe_cb_irq(struct yenta_socket *socket);
  static unsigned int yenta_probe_irq(struct yenta_socket *socket,
  				u32 isa_irq_mask);
  #endif
  
  
  static unsigned int override_bios;
  module_param(override_bios, uint, 0000);
  MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
  
  /*
   * 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);
  	debug("%04x %08x
  ", socket, reg, val);
  	return val;
  }
  
  static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  {
  	debug("%04x %08x
  ", socket, reg, val);
  	writel(val, socket->base + reg);
  	readl(socket->base + reg); /* avoid problems with PCI write posting */
  }
  
  static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  {
  	u8 val;
  	pci_read_config_byte(socket->dev, offset, &val);
  	debug("%04x %02x
  ", socket, offset, val);
  	return val;
  }
  
  static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
  {
  	u16 val;
  	pci_read_config_word(socket->dev, offset, &val);
  	debug("%04x %04x
  ", socket, offset, val);
  	return val;
  }
  
  static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
  {
  	u32 val;
  	pci_read_config_dword(socket->dev, offset, &val);
  	debug("%04x %08x
  ", socket, offset, val);
  	return val;
  }
  
  static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
  {
  	debug("%04x %02x
  ", socket, offset, val);
  	pci_write_config_byte(socket->dev, offset, val);
  }
  
  static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
  {
  	debug("%04x %04x
  ", socket, offset, val);
  	pci_write_config_word(socket->dev, offset, val);
  }
  
  static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
  {
  	debug("%04x %08x
  ", socket, offset, val);
  	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);
  	debug("%04x %02x
  ", socket, reg, val);
  	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;
  	debug("%04x %04x
  ", socket, reg, val);
  	return val;
  }
  
  static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
  {
  	debug("%04x %02x
  ", socket, reg, val);
  	writeb(val, socket->base + 0x800 + reg);
  	readb(socket->base + 0x800 + reg); /* PCI write posting... */
  }
  
  static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
  {
  	debug("%04x %04x
  ", socket, reg, val);
  	writeb(val, socket->base + 0x800 + reg);
  	writeb(val >> 8, socket->base + 0x800 + reg + 1);
  
  	/* PCI write posting... */
  	readb(socket->base + 0x800 + reg);
  	readb(socket->base + 0x800 + reg + 1);
  }
  
  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, "
  %02x:", i);
  		val = cb_readl(socket, i);
  		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
  	}
  
  	offset += snprintf(buf + offset, PAGE_SIZE - offset, "
  
  ExCA 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, "
  %02x:", i);
  		}
  		val = exca_readb(socket, i);
  		offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
  	}
  	buf[offset++] = '
  ';
  	return offset;
  }
  
  static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
  
  /*
   * 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;
  	val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
  	val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
  
  
  	if (state & CB_CBCARD) {
  		val |= SS_CARDBUS;
  		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;
  	} else if (state & CB_16BITCARD) {
  		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)
  {
  	/* 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) {
  			case 33:
  				reg |= I365_VCC_3V;
  				break;
  			case 50:
  				reg |= I365_VCC_5V;
  				break;
  			default:
  				reg = 0;
  				break;
  			}
  			switch (state->Vpp) {
  			case 33:
  			case 50:
  				reg |= I365_VPP1_5V;
  				break;
  			case 120:
  				reg |= I365_VPP1_12V;
  				break;
  			}
  		} else {
  			/* i82365SL-B style */
  			switch (state->Vcc) {
  			case 50:
  				reg |= I365_VCC_5V;
  				break;
  			default:
  				reg = 0;
  				break;
  			}
  			switch (state->Vpp) {
  			case 50:
  				reg |= I365_VPP1_5V | I365_VPP2_5V;
  				break;
  			case 120:
  				reg |= I365_VPP1_12V | I365_VPP2_12V;
  				break;
  			}
  		}
  
  		if (reg != old)
  			exca_writeb(socket, I365_POWER, reg);
  	} else {
  		u32 reg = 0;	/* CB_SC_STPCLK? */
  		switch (state->Vcc) {
  		case 33:
  			reg = CB_SC_VCC_3V;
  			break;
  		case 50:
  			reg = CB_SC_VCC_5V;
  			break;
  		default:
  			reg = 0;
  			break;
  		}
  		switch (state->Vpp) {
  		case 33:
  			reg |= CB_SC_VPP_3V;
  			break;
  		case 50:
  			reg |= CB_SC_VPP_5V;
  			break;
  		case 120:
  			reg |= CB_SC_VPP_12V;
  			break;
  		}
  		if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
  			cb_writel(socket, CB_SOCKET_CONTROL, reg);
  	}
  }
  
  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;
  
  	/* if powering down: do it immediately */
  	if (state->Vcc == 0)
  		yenta_set_power(socket, state);
  
  	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);
  		if (!socket->dev->irq) {
  			intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
  			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;
  		if (state->io_irq != socket->dev->irq) {
  			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;
  		if (state->flags & SS_PWR_AUTO)
  			reg |= I365_PWR_AUTO;
  		if (state->flags & SS_OUTPUT_ENA)
  			reg |= I365_PWR_OUT;
  		if (exca_readb(socket, I365_POWER) != reg)
  			exca_writeb(socket, I365_POWER, reg);
  
  		/* CSC interrupt: no ISA irq for CSC */
  		reg = exca_readb(socket, I365_CSCINT);
  		reg &= I365_CSC_IRQ_MASK;
  		reg |= I365_CSC_DETECT;
  		if (state->flags & SS_IOCARD) {
  			if (state->csc_mask & SS_STSCHG)
  				reg |= I365_CSC_STSCHG;
  		} else {
  			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;
  		}
  		exca_writeb(socket, I365_CSCINT, reg);
  		exca_readb(socket, I365_CSC);
  		if (sock->zoom_video)
  			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);
  
  	/* if powering up: do it as the last step when the socket is configured */
  	if (state->Vcc != 0)
  		yenta_set_power(socket, state);
  	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);
  	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);
  	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;
  
  	pcibios_resource_to_bus(socket->dev->bus, &region, mem->res);
  
  	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)) {
  	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;
  	}
  	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;
  }
  
  
  
  static irqreturn_t yenta_interrupt(int irq, void *dev_id)
  {
  	unsigned int events;
  	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  	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);
  
  	if (!(cb_event || csc))
  		return IRQ_NONE;
  
  	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;
  	}
  
  	if (events)
  		pcmcia_parse_events(&socket->socket, events);
  
  	return IRQ_HANDLED;
  }
  
  static void yenta_interrupt_wrapper(unsigned long data)
  {
  	struct yenta_socket *socket = (struct yenta_socket *) data;
  
  	yenta_interrupt(0, (void *)socket);
  	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);
  	}
  }
  
  /* 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);
  }
  
  /* 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 */
  	yenta_interrogate(socket);
  
  	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.
   * max 4 MB, min 16 kB. We try very hard to not get below
   * the "ACC" values, though.
   */
  #define BRIDGE_MEM_MAX (4*1024*1024)
  #define BRIDGE_MEM_ACC (128*1024)
  #define BRIDGE_MEM_MIN (16*1024)
  
  #define BRIDGE_IO_MAX 512
  #define BRIDGE_IO_ACC 256
  #define BRIDGE_IO_MIN 32
  
  #ifndef PCIBIOS_MIN_CARDBUS_IO
  #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
  #endif
  
  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) {
  			size = (avail+1)/8;
  			/* 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,
  				      NULL, NULL) == 0) {
  			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)
  {
  	struct resource *root;
  	int i;
  
  	pci_bus_for_each_resource(socket->dev->bus, root, i) {
  		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;
  }
  
  static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
  {
  	struct pci_dev *dev = socket->dev;
  	struct resource *res;
  	struct pci_bus_region region;
  	unsigned mask;
  
  	res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
  	/* Already allocated? */
  	if (res->parent)
  		return 0;
  
  	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
  	mask = ~0xfff;
  	if (type & IORESOURCE_IO)
  		mask = ~3;
  
  	res->name = dev->subordinate->name;
  	res->flags = type;
  
  	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) {
  		pcibios_bus_to_resource(dev->bus, res, &region);
  		if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
  			return 0;
  		dev_printk(KERN_INFO, &dev->dev,
  			   "Preassigned resource %d busy or not available, "
  			   "reconfiguring...
  ",
  			   nr);
  	}
  
  	if (type & IORESOURCE_IO) {
  		if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
  		    (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
  		    (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
  			return 1;
  	} else {
  		if (type & IORESOURCE_PREFETCH) {
  			if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  			    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  			    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  				return 1;
  			/* Approximating prefetchable by non-prefetchable */
  			res->flags = IORESOURCE_MEM;
  		}
  		if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  		    (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  		    (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  			return 1;
  	}
  
  	dev_printk(KERN_INFO, &dev->dev,
  		   "no resource of type %x available, trying to continue...
  ",
  		   type);
  	res->start = res->end = res->flags = 0;
  	return 0;
  }
  
  /*
   * Allocate the bridge mappings for the device..
   */
  static void yenta_allocate_resources(struct yenta_socket *socket)
  {
  	int program = 0;
  	program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
  			   PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
  	program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
  			   PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
  	program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
  			   PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
  	program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
  			   PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
  	if (program)
  		pci_setup_cardbus(socket->dev->subordinate);
  }
  
  
  /*
   * Free the bridge mappings for the device..
   */
  static void yenta_free_resources(struct yenta_socket *socket)
  {
  	int i;
  	for (i = 0; i < 4; i++) {
  		struct resource *res;
  		res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
  		if (res->start != 0 && res->end != 0)
  			release_resource(res);
  		res->start = res->end = res->flags = 0;
  	}
  }
  
  
  /*
   * Close it down - release our resources and go home..
   */
  static void yenta_close(struct pci_dev *dev)
  {
  	struct yenta_socket *sock = pci_get_drvdata(dev);
  
  	/* Remove the register attributes */
  	device_remove_file(&dev->dev, &dev_attr_yenta_registers);
  
  	/* we don't want a dying socket registered */
  	pcmcia_unregister_socket(&sock->socket);
  
  	/* 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,
  };
  
  
  #ifdef CONFIG_YENTA_TI
  #include "ti113x.h"
  #endif
  #ifdef CONFIG_YENTA_RICOH
  #include "ricoh.h"
  #endif
  #ifdef CONFIG_YENTA_TOSHIBA
  #include "topic.h"
  #endif
  #ifdef CONFIG_YENTA_O2
  #include "o2micro.h"
  #endif
  
  enum {
  	CARDBUS_TYPE_DEFAULT = -1,
  	CARDBUS_TYPE_TI,
  	CARDBUS_TYPE_TI113X,
  	CARDBUS_TYPE_TI12XX,
  	CARDBUS_TYPE_TI1250,
  	CARDBUS_TYPE_RICOH,
  	CARDBUS_TYPE_TOPIC95,
  	CARDBUS_TYPE_TOPIC97,
  	CARDBUS_TYPE_O2MICRO,
  	CARDBUS_TYPE_ENE,
  };
  
  /*
   * Different cardbus controllers have slightly different
   * initialization sequences etc details. List them here..
   */
  static struct cardbus_type cardbus_type[] = {
  #ifdef CONFIG_YENTA_TI
  	[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,
  	},
  	[CARDBUS_TYPE_ENE]	= {
  		.override	= ene_override,
  		.save_state	= ti_save_state,
  		.restore_state	= ti_restore_state,
  		.sock_init	= ti_init,
  	},
  #endif
  #ifdef CONFIG_YENTA_RICOH
  	[CARDBUS_TYPE_RICOH]	= {
  		.override	= ricoh_override,
  		.save_state	= ricoh_save_state,
  		.restore_state	= ricoh_restore_state,
  	},
  #endif
  #ifdef CONFIG_YENTA_TOSHIBA
  	[CARDBUS_TYPE_TOPIC95]	= {
  		.override	= topic95_override,
  	},
  	[CARDBUS_TYPE_TOPIC97]	= {
  		.override	= topic97_override,
  	},
  #endif
  #ifdef CONFIG_YENTA_O2
  	[CARDBUS_TYPE_O2MICRO]	= {
  		.override	= o2micro_override,
  		.restore_state	= o2micro_restore_state,
  	},
  #endif
  };
  
  
  static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
  {
  	int i;
  	unsigned long val;
  	u32 mask;
  	u8 reg;
  
  	/*
  	 * 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);
  	reg = exca_readb(socket, I365_CSCINT);
  	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);
  	exca_writeb(socket, I365_CSCINT, reg);
  
  	mask = probe_irq_mask(val) & 0xffff;
  
  	return mask;
  }
  
  
  /*
   * yenta PCI irq probing.
   * currently only used in the TI/EnE initialization code
   */
  #ifdef CONFIG_YENTA_TI
  
  /* interrupt handler, only used during probing */
  static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
  {
  	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  	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, -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)
  {
  	u8 reg = 0;
  
  	if (!socket->cb_irq)
  		return -1;
  
  	socket->probe_status = 0;
  
  	if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
  		dev_printk(KERN_WARNING, &socket->dev->dev,
  			   "request_irq() in yenta_probe_cb_irq() failed!
  ");
  		return -1;
  	}
  
  	/* generate interrupt, wait */
  	if (!socket->dev->irq)
  		reg = exca_readb(socket, I365_CSCINT);
  	exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
  	cb_writel(socket, CB_SOCKET_EVENT, -1);
  	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
  	cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
  
  	msleep(100);
  
  	/* disable interrupts */
  	cb_writel(socket, CB_SOCKET_MASK, 0);
  	exca_writeb(socket, I365_CSCINT, reg);
  	cb_writel(socket, CB_SOCKET_EVENT, -1);
  	exca_readb(socket, I365_CSC);
  
  	free_irq(socket->cb_irq, socket);
  
  	return (int) socket->probe_status;
  }
  
  #endif /* CONFIG_YENTA_TI */
  
  
  /*
   * 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;
  	if (isa_probe)
  		socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
  	else
  		socket->socket.irq_mask = 0;
  
  	dev_printk(KERN_INFO, &socket->dev->dev,
  		   "ISA IRQ mask 0x%04x, PCI irq %d
  ",
  		   socket->socket.irq_mask, socket->cb_irq);
  }
  
  /*
   * Initialize the standard cardbus registers
   */
  static void yenta_config_init(struct yenta_socket *socket)
  {
  	u16 bridge;
  	struct pci_dev *dev = socket->dev;
  	struct pci_bus_region region;
  
  	pcibios_resource_to_bus(socket->dev->bus, &region, &dev->resource[0]);
  
  	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
  	config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
  	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 */
  		((unsigned int)dev->subordinate->busn_res.end << 16) | /* subordinate bus */
  		((unsigned int)dev->subordinate->busn_res.start << 8) |  /* secondary bus */
  		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);
  	bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
  	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
  	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
  }
  
  /**
   * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
   * @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.
   * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
   */
  static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
  {
  	struct list_head *tmp;
  	unsigned char upper_limit;
  	/*
  	 * 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: */
  	if (bridge_to_fix->busn_res.end >= cardbus_bridge->busn_res.end)
  		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: */
  	upper_limit = bridge_to_fix->parent->busn_res.end;
  
  	/* check the bus ranges of all silbling bridges to prevent overlap */
  	list_for_each(tmp, &bridge_to_fix->parent->children) {
  		struct pci_bus *silbling = pci_bus_b(tmp);
  		/*
  		 * 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:
  		 */
  		if (silbling->busn_res.start > bridge_to_fix->busn_res.end
  		    && silbling->busn_res.start <= upper_limit)
  			upper_limit = silbling->busn_res.start - 1;
  	}
  
  	/* Show that the wanted subordinate number is not possible: */
  	if (cardbus_bridge->busn_res.end > upper_limit)
  		dev_printk(KERN_WARNING, &cardbus_bridge->dev,
  			   "Upper limit for fixing this "
  			   "bridge's parent bridge: #%02x
  ", upper_limit);
  
  	/* If we have room to increase the bridge's subordinate number, */
  	if (bridge_to_fix->busn_res.end < upper_limit) {
  
  		/* use the highest number of the hidden bus, within limits */
  		unsigned char subordinate_to_assign =
  			min_t(int, cardbus_bridge->busn_res.end, upper_limit);
  
  		dev_printk(KERN_INFO, &bridge_to_fix->dev,
  			   "Raising subordinate bus# of parent "
  			   "bus (#%02x) from #%02x to #%02x
  ",
  			   bridge_to_fix->number,
  			   (int)bridge_to_fix->busn_res.end, subordinate_to_assign);
  
  		/* Save the new subordinate in the bus struct of the bridge */
  		bridge_to_fix->busn_res.end = subordinate_to_assign;
  
  		/* and update the PCI config space with the new subordinate */
  		pci_write_config_byte(bridge_to_fix->self,
  			PCI_SUBORDINATE_BUS, bridge_to_fix->busn_res.end);
  	}
  }
  
  /*
   * 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..
   */
  static int yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
  {
  	struct yenta_socket *socket;
  	int ret;
  
  	/*
  	 * 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) {
  		dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
  			   "(try 'pci=assign-busses')
  ");
  		return -ENODEV;
  	}
  
  	socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
  	if (!socket)
  		return -ENOMEM;
  
  	/* prepare pcmcia_socket */
  	socket->socket.ops = &yenta_socket_operations;
  	socket->socket.resource_ops = &pccard_nonstatic_ops;
  	socket->socket.dev.parent = &dev->dev;
  	socket->socket.driver_data = socket;
  	socket->socket.owner = THIS_MODULE;
  	socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
  	socket->socket.map_size = 0x1000;
  	socket->socket.cb_dev = dev;
  
  	/* 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)) {
  		dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!
  ");
  		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...
  	 */
  	dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]
  ",
  		   dev->subsystem_vendor, dev->subsystem_device);
  
  	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 */
  
  	if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
  		/* 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);
  		dev_printk(KERN_INFO, &dev->dev,
  			   "no PCI IRQ, CardBus support disabled for this "
  			   "socket.
  ");
  		dev_printk(KERN_INFO, &dev->dev,
  			   "check your BIOS CardBus, BIOS IRQ or ACPI "
  			   "settings.
  ");
  	} else {
  		socket->socket.features |= SS_CAP_CARDBUS;
  	}
  
  	/* Figure out what the dang thing can do for the PCMCIA layer... */
  	yenta_interrogate(socket);
  	yenta_get_socket_capabilities(socket, isa_interrupts);
  	dev_printk(KERN_INFO, &dev->dev,
  		   "Socket status: %08x
  ", cb_readl(socket, CB_SOCKET_STATE));
  
  	yenta_fixup_parent_bridge(dev->subordinate);
  
  	/* Register it with the pcmcia layer.. */
  	ret = pcmcia_register_socket(&socket->socket);
  	if (ret == 0) {
  		/* Add the yenta register attributes */
  		ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
  		if (ret == 0)
  			goto out;
  
  		/* error path... */
  		pcmcia_unregister_socket(&socket->socket);
  	}
  
   unmap:
  	iounmap(socket->base);
   release:
  	pci_release_regions(dev);
   disable:
  	pci_disable_device(dev);
   free:
  	kfree(socket);
   out:
  	return ret;
  }
  
  #ifdef CONFIG_PM
  static int yenta_dev_suspend_noirq(struct device *dev)
  {
  	struct pci_dev *pdev = to_pci_dev(dev);
  	struct yenta_socket *socket = pci_get_drvdata(pdev);
  
  	if (!socket)
  		return 0;
  
  	if (socket->type && socket->type->save_state)
  		socket->type->save_state(socket);
  
  	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);
  
  	return 0;
  }
  
  static int yenta_dev_resume_noirq(struct device *dev)
  {
  	struct pci_dev *pdev = to_pci_dev(dev);
  	struct yenta_socket *socket = pci_get_drvdata(pdev);
  	int ret;
  
  	if (!socket)
  		return 0;
  
  	pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
  	pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
  
  	ret = pci_enable_device(pdev);
  	if (ret)
  		return ret;
  
  	pci_set_master(pdev);
  
  	if (socket->type && socket->type->restore_state)
  		socket->type->restore_state(socket);
  
  	return 0;
  }
  
  static const struct dev_pm_ops yenta_pm_ops = {
  	.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
  #endif
  
  #define CB_ID(vend, dev, type)				\
  	{						\
  		.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,	\
  	}
  
  static DEFINE_PCI_DEVICE_TABLE(yenta_table) = {
  	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)
  	 */
  #ifdef CONFIG_YENTA_TI
  	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),
  
  	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),
  	CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
  	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),
  
  	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),
  	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),
  #endif /* CONFIG_YENTA_TI */
  
  #ifdef CONFIG_YENTA_RICOH
  	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),
  #endif
  
  #ifdef CONFIG_YENTA_TOSHIBA
  	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
  	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
  	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
  #endif
  
  #ifdef CONFIG_YENTA_O2
  	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
  #endif
  
  	/* 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,
  	.remove		= yenta_close,
  	.driver.pm	= YENTA_PM_OPS,
  };
  
  module_pci_driver(yenta_cardbus_driver);
  
  MODULE_LICENSE("GPL");