Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1160 insertions, 0 deletions

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
new file mode 100644
index 000000000000..6404d97a12eb
--- /dev/null
+++ b/drivers/pcmcia/yenta_socket.c
@@ -0,0 +1,1160 @@
+/*
+ * 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/sched.h>
+#include <linux/workqueue.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/cs.h>
+
+#include <asm/io.h>
+
+#include "yenta_socket.h"
+#include "i82365.h"
+
+static int disable_clkrun;
+module_param(disable_clkrun, bool, 0444);
+MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
+
+#if 0
+#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
+#else
+#define debug(x,args...)
+#endif
+
+/* Don't ask.. */
+#define to_cycles(ns)	((ns)/120)
+#define to_ns(cycles)	((cycles)*120)
+
+static int yenta_probe_cb_irq(struct yenta_socket *socket);
+
+
+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("%p %04x %08x\n", socket, reg, val);
+	return val;
+}
+
+static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
+{
+	debug("%p %04x %08x\n", socket, reg, val);
+	writel(val, socket->base + reg);
+}
+
+static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
+{
+	u8 val;
+	pci_read_config_byte(socket->dev, offset, &val);
+	debug("%p %04x %02x\n", 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("%p %04x %04x\n", 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("%p %04x %08x\n", socket, offset, val);
+	return val;
+}
+
+static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
+{
+	debug("%p %04x %02x\n", 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("%p %04x %04x\n", 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("%p %04x %08x\n", 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("%p %04x %02x\n", 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("%p %04x %04x\n", socket, reg, val);
+	return val;
+}
+
+static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
+{
+	debug("%p %04x %02x\n", socket, reg, val);
+	writeb(val, socket->base + 0x800 + reg);
+}
+
+static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
+{
+	debug("%p %04x %04x\n", socket, reg, val);
+	writeb(val, socket->base + 0x800 + reg);
+	writeb(val >> 8, socket->base + 0x800 + reg + 1);
+}
+
+/*
+ * 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_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD
+			 | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
+
+	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 {
+		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 int yenta_Vcc_power(u32 control)
+{
+	switch (control & CB_SC_VCC_MASK) {
+	case CB_SC_VCC_5V: return 50;
+	case CB_SC_VCC_3V: return 33;
+	default: return 0;
+	}
+}
+
+static int yenta_Vpp_power(u32 control)
+{
+	switch (control & CB_SC_VPP_MASK) {
+	case CB_SC_VPP_12V: return 120;
+	case CB_SC_VPP_5V: return 50;
+	case CB_SC_VPP_3V: return 33;
+	default: return 0;
+	}
+}
+
+static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
+{
+	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
+	u8 reg;
+	u32 control;
+
+	control = cb_readl(socket, CB_SOCKET_CONTROL);
+
+	state->Vcc = yenta_Vcc_power(control);
+	state->Vpp = yenta_Vpp_power(control);
+	state->io_irq = socket->io_irq;
+
+	if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
+		u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL);
+		if (bridge & CB_BRIDGE_CRST)
+			state->flags |= SS_RESET;
+		return 0;
+	}
+
+	/* 16-bit card state.. */
+	reg = exca_readb(socket, I365_POWER);
+	state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0;
+	state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0;
+
+	reg = exca_readb(socket, I365_INTCTL);
+	state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET;
+	state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0;
+
+	reg = exca_readb(socket, I365_CSCINT);
+	state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0;
+	if (state->flags & SS_IOCARD) {
+		state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0;
+	} else {
+		state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0;
+		state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0;
+		state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0;
+	}
+
+	return 0;
+}
+
+static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
+{
+	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;
+
+	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->cb_irq) {
+			intr |= 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->cb_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 = 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);
+	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, &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 unsigned int yenta_events(struct yenta_socket *socket)
+{
+	u8 csc;
+	u32 cb_event;
+	unsigned int events;
+
+	/* 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);
+
+	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;
+	}
+	return events;
+}
+
+
+static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	unsigned int events;
+	struct yenta_socket *socket = (struct yenta_socket *) dev_id;
+
+	events = yenta_events(socket);
+	if (events) {
+		pcmcia_parse_events(&socket->socket, events);
+		return IRQ_HANDLED;
+	}
+	return IRQ_NONE;
+}
+
+static void yenta_interrupt_wrapper(unsigned long data)
+{
+	struct yenta_socket *socket = (struct yenta_socket *) data;
+
+	yenta_interrupt(0, (void *)socket, NULL);
+	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);
+	}
+}
+
+/* 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);
+	u32 state;
+	u16 bridge;
+
+	bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR;
+	if (!socket->cb_irq)
+		bridge |= CB_BRIDGE_INTR;
+	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
+
+	exca_writeb(socket, I365_GBLCTL, 0x00);
+	exca_writeb(socket, I365_GENCTL, 0x00);
+
+	/* Redo card voltage interrogation */
+	state = cb_readl(socket, CB_SOCKET_STATE);
+	if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD |
+	               CB_3VCARD | CB_XVCARD | CB_YVCARD)))
+		cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
+
+	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.
+ */
+#define BRIDGE_MEM_MAX 4*1024*1024
+#define BRIDGE_MEM_MIN 16*1024
+
+#define BRIDGE_IO_MAX 256
+#define BRIDGE_IO_MIN 32
+
+#ifndef PCIBIOS_MIN_CARDBUS_IO
+#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
+#endif
+
+static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type)
+{
+	struct pci_bus *bus;
+	struct resource *root, *res;
+	u32 start, end;
+	u32 align, size, min;
+	unsigned offset;
+	unsigned mask;
+
+	/* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
+	mask = ~0xfff;
+	if (type & IORESOURCE_IO)
+		mask = ~3;
+
+	offset = 0x1c + 8*nr;
+	bus = socket->dev->subordinate;
+	res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
+	res->name = bus->name;
+	res->flags = type;
+	res->start = 0;
+	res->end = 0;
+	root = pci_find_parent_resource(socket->dev, res);
+
+	if (!root)
+		return;
+
+	start = config_readl(socket, offset) & mask;
+	end = config_readl(socket, offset+4) | ~mask;
+	if (start && end > start && !override_bios) {
+		res->start = start;
+		res->end = end;
+		if (request_resource(root, res) == 0)
+			return;
+		printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n",
+				pci_name(socket->dev), nr);
+		res->start = res->end = 0;
+	}
+
+	if (type & IORESOURCE_IO) {
+		align = 1024;
+		size = BRIDGE_IO_MAX;
+		min = BRIDGE_IO_MIN;
+		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 < BRIDGE_MEM_MIN)
+			size = BRIDGE_MEM_MIN;
+		min = BRIDGE_MEM_MIN;
+		align = size;
+		start = PCIBIOS_MIN_MEM;
+		end = ~0U;
+	}
+	
+	do {
+		if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) {
+			config_writel(socket, offset, res->start);
+			config_writel(socket, offset+4, res->end);
+			return;
+		}
+		size = size/2;
+		align = size;
+	} while (size >= min);
+	printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n",
+			pci_name(socket->dev), type);
+	res->start = res->end = 0;
+}
+
+/*
+ * Allocate the bridge mappings for the device..
+ */
+static void yenta_allocate_resources(struct yenta_socket *socket)
+{
+	yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH);
+	yenta_allocate_res(socket, 1, IORESOURCE_MEM);
+	yenta_allocate_res(socket, 2, IORESOURCE_IO);
+	yenta_allocate_res(socket, 3, IORESOURCE_IO);	/* PCI isn't clever enough to use this one yet */
+}
+
+
+/*
+ * 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 = 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);
+
+	/* 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,
+	.get_socket		= yenta_get_socket,
+	.set_socket		= yenta_set_socket,
+	.set_io_map		= yenta_set_io_map,
+	.set_mem_map		= yenta_set_mem_map,
+};
+
+
+#include "ti113x.h"
+#include "ricoh.h"
+#include "topic.h"
+#include "o2micro.h"
+
+enum {
+	CARDBUS_TYPE_DEFAULT = -1,
+	CARDBUS_TYPE_TI,
+	CARDBUS_TYPE_TI113X,
+	CARDBUS_TYPE_TI12XX,
+	CARDBUS_TYPE_TI1250,
+	CARDBUS_TYPE_RICOH,
+	CARDBUS_TYPE_TOPIC97,
+	CARDBUS_TYPE_O2MICRO,
+};
+
+/*
+ * Different cardbus controllers have slightly different
+ * initialization sequences etc details. List them here..
+ */
+static struct cardbus_type cardbus_type[] = {
+	[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_RICOH]	= {
+		.override	= ricoh_override,
+		.save_state	= ricoh_save_state,
+		.restore_state	= ricoh_restore_state,
+	},
+	[CARDBUS_TYPE_TOPIC97]	= {
+		.override	= topic97_override,
+	},
+	[CARDBUS_TYPE_O2MICRO]	= {
+		.override	= o2micro_override,
+		.restore_state	= o2micro_restore_state,
+	},
+};
+
+
+/*
+ * 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;
+
+static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
+{
+	int i;
+	unsigned long val;
+	u16 bridge_ctrl;
+	u32 mask;
+
+	/* Set up ISA irq routing to probe the ISA irqs.. */
+	bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
+	if (!(bridge_ctrl & CB_BRIDGE_INTR)) {
+		bridge_ctrl |= CB_BRIDGE_INTR;
+		config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
+	}
+
+	/*
+	 * 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);
+	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, 0);
+
+	mask = probe_irq_mask(val) & 0xffff;
+
+	bridge_ctrl &= ~CB_BRIDGE_INTR;
+	config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
+
+	return mask;
+}
+
+
+/* interrupt handler, only used during probing */
+static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	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)
+{
+	u16 bridge_ctrl;
+
+	if (!socket->cb_irq)
+		return -1;
+
+	socket->probe_status = 0;
+
+	/* disable ISA interrupts */
+	bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL);
+	bridge_ctrl &= ~CB_BRIDGE_INTR;
+	config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl);
+
+	if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) {
+		printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n");
+		return -1;
+	}
+
+	/* generate interrupt, wait */
+	exca_writeb(socket, I365_CSCINT, 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, 0);
+	cb_writel(socket, CB_SOCKET_EVENT, -1);
+	exca_readb(socket, I365_CSC);
+
+	free_irq(socket->cb_irq, socket);
+
+	return (int) socket->probe_status;
+}
+
+
+
+/*
+ * 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.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS;
+	socket->socket.map_size = 0x1000;
+	socket->socket.pci_irq = socket->cb_irq;
+	socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
+	socket->socket.cb_dev = socket->dev;
+
+	printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
+	       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;
+
+	pci_set_power_state(socket->dev, 0);
+
+	config_writel(socket, CB_LEGACY_MODE_BASE, 0);
+	config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].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 */
+		(dev->subordinate->subordinate << 16) | /* subordinate bus */
+		(dev->subordinate->secondary << 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_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
+	bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR;
+	config_writew(socket, CB_BRIDGE_CONTROL, bridge);
+}
+
+/*
+ * 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 __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id)
+{
+	struct yenta_socket *socket;
+	int ret;
+	
+	socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
+	if (!socket)
+		return -ENOMEM;
+	memset(socket, 0, sizeof(*socket));
+
+	/* prepare pcmcia_socket */
+	socket->socket.ops = &yenta_socket_operations;
+	socket->socket.resource_ops = &pccard_nonstatic_ops;
+	socket->socket.dev.dev = &dev->dev;
+	socket->socket.driver_data = socket;
+	socket->socket.owner = THIS_MODULE;
+
+	/* 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)) {
+		printk(KERN_ERR "No cardbus resource!\n");
+		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...
+	 */
+	printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n",
+		pci_name(dev), 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, SA_SHIRQ, "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);
+	}
+
+	/* Figure out what the dang thing can do for the PCMCIA layer... */
+	yenta_get_socket_capabilities(socket, isa_interrupts);
+	printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
+
+	/* Register it with the pcmcia layer.. */
+	ret = pcmcia_register_socket(&socket->socket);
+	if (ret == 0)
+		goto out;
+
+ unmap:
+	iounmap(socket->base);
+ release:
+	pci_release_regions(dev);
+ disable:
+	pci_disable_device(dev);
+ free:
+	kfree(socket);
+ out:
+	return ret;
+}
+
+
+static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
+{
+	struct yenta_socket *socket = pci_get_drvdata(dev);
+	int ret;
+
+	ret = pcmcia_socket_dev_suspend(&dev->dev, state);
+
+	if (socket) {
+		if (socket->type && socket->type->save_state)
+			socket->type->save_state(socket);
+
+		/* FIXME: pci_save_state needs to have a better interface */
+		pci_save_state(dev);
+		pci_read_config_dword(dev, 16*4, &socket->saved_state[0]);
+		pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
+
+		/*
+		 * Some laptops (IBM T22) do not like us putting the Cardbus
+		 * bridge into D3.  At a guess, some other laptop will
+		 * probably require this, so leave it commented out for now.
+		 */
+		/* pci_set_power_state(dev, 3); */
+	}
+
+	return ret;
+}
+
+
+static int yenta_dev_resume (struct pci_dev *dev)
+{
+	struct yenta_socket *socket = pci_get_drvdata(dev);
+
+	if (socket) {
+		pci_set_power_state(dev, 0);
+		/* FIXME: pci_restore_state needs to have a better interface */
+		pci_restore_state(dev);
+		pci_write_config_dword(dev, 16*4, socket->saved_state[0]);
+		pci_write_config_dword(dev, 17*4, socket->saved_state[1]);
+
+		if (socket->type && socket->type->restore_state)
+			socket->type->restore_state(socket);
+	}
+
+	return pcmcia_socket_dev_resume(&dev->dev);
+}
+
+
+#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 struct pci_device_id 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)
+	 */
+	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_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX),
+	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX),
+	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250),
+	CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX),
+
+	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),
+
+	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
+	CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
+
+	CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
+
+	/* 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		= __devexit_p(yenta_close),
+	.suspend	= yenta_dev_suspend,
+	.resume		= yenta_dev_resume,
+};
+
+
+static int __init yenta_socket_init(void)
+{
+	return pci_register_driver (&yenta_cardbus_driver);
+}
+
+
+static void __exit yenta_socket_exit (void)
+{
+	pci_unregister_driver (&yenta_cardbus_driver);
+}
+
+
+module_init(yenta_socket_init);
+module_exit(yenta_socket_exit);
+
+MODULE_LICENSE("GPL");