[PATCH] pcmcia: move pcmcia resource handling out of cs.c

Move the 16-bit PCMICA resource handling from pcmcia_core.o to pcmcia.o.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 989 insertions, 0 deletions

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
new file mode 100644
index 00000000000..cf66b997894
--- /dev/null
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -0,0 +1,989 @@
+/*
+ * PCMCIA 16-bit resource management functions
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+ *
+ * Copyright (C) 1999	     David A. Hinds
+ * Copyright (C) 2004-2005   Dominik Brodowski
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+
+#define IN_CARD_SERVICES
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/bulkmem.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+#include "cs_internal.h"
+#include "ds_internal.h"
+
+
+static const char *release = "Linux Kernel Card Services";
+
+/* Access speed for IO windows */
+static int io_speed = 0;
+module_param(io_speed, int, 0444);
+
+
+#ifdef CONFIG_PCMCIA_PROBE
+/* mask of IRQs already reserved by other cards, we should avoid using them */
+static u8 pcmcia_used_irq[NR_IRQS];
+#endif
+
+
+#ifdef DEBUG
+extern int ds_pc_debug;
+#define cs_socket_name(skt)    ((skt)->dev.class_id)
+
+#define ds_dbg(skt, lvl, fmt, arg...) do {			\
+	if (ds_pc_debug >= lvl)					\
+		printk(KERN_DEBUG "pcmcia_resource: %s: " fmt,	\
+			cs_socket_name(skt) , ## arg);		\
+} while (0)
+#else
+#define ds_dbg(lvl, fmt, arg...) do { } while (0)
+#endif
+
+
+
+/** alloc_io_space
+ *
+ * Special stuff for managing IO windows, because they are scarce
+ */
+
+static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
+			  ioaddr_t num, u_int lines)
+{
+	int i;
+	kio_addr_t try, align;
+
+	align = (*base) ? (lines ? 1<<lines : 0) : 1;
+	if (align && (align < num)) {
+		if (*base) {
+			ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
+			       num, align);
+			align = 0;
+		} else
+			while (align && (align < num)) align <<= 1;
+	}
+	if (*base & ~(align-1)) {
+		ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
+		       *base, align);
+		align = 0;
+	}
+	if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
+		*base = s->io_offset | (*base & 0x0fff);
+		return 0;
+	}
+	/* Check for an already-allocated window that must conflict with
+	 * what was asked for.  It is a hack because it does not catch all
+	 * potential conflicts, just the most obvious ones.
+	 */
+	for (i = 0; i < MAX_IO_WIN; i++)
+		if ((s->io[i].NumPorts != 0) &&
+		    ((s->io[i].BasePort & (align-1)) == *base))
+			return 1;
+	for (i = 0; i < MAX_IO_WIN; i++) {
+		if (s->io[i].NumPorts == 0) {
+			s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
+			if (s->io[i].res) {
+				s->io[i].Attributes = attr;
+				s->io[i].BasePort = *base = s->io[i].res->start;
+				s->io[i].NumPorts = s->io[i].InUse = num;
+				break;
+			} else
+				return 1;
+		} else if (s->io[i].Attributes != attr)
+			continue;
+		/* Try to extend top of window */
+		try = s->io[i].BasePort + s->io[i].NumPorts;
+		if ((*base == 0) || (*base == try))
+			if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
+						    s->io[i].res->end + num, s) == 0) {
+				*base = try;
+				s->io[i].NumPorts += num;
+				s->io[i].InUse += num;
+				break;
+			}
+		/* Try to extend bottom of window */
+		try = s->io[i].BasePort - num;
+		if ((*base == 0) || (*base == try))
+			if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
+						    s->io[i].res->end, s) == 0) {
+				s->io[i].BasePort = *base = try;
+				s->io[i].NumPorts += num;
+				s->io[i].InUse += num;
+				break;
+			}
+	}
+	return (i == MAX_IO_WIN);
+} /* alloc_io_space */
+
+
+static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
+			     ioaddr_t num)
+{
+	int i;
+
+	for (i = 0; i < MAX_IO_WIN; i++) {
+		if ((s->io[i].BasePort <= base) &&
+		    (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
+			s->io[i].InUse -= num;
+			/* Free the window if no one else is using it */
+			if (s->io[i].InUse == 0) {
+				s->io[i].NumPorts = 0;
+				release_resource(s->io[i].res);
+				kfree(s->io[i].res);
+				s->io[i].res = NULL;
+			}
+		}
+	}
+} /* release_io_space */
+
+
+/** pccard_access_configuration_register
+ *
+ * Access_configuration_register() reads and writes configuration
+ * registers in attribute memory.  Memory window 0 is reserved for
+ * this and the tuple reading services.
+ */
+
+int pccard_access_configuration_register(struct pcmcia_socket *s,
+					 unsigned int function,
+					 conf_reg_t *reg)
+{
+	config_t *c;
+	int addr;
+	u_char val;
+
+	if (!s || !s->config)
+		return CS_NO_CARD;
+
+	c = &s->config[function];
+
+	if (c == NULL)
+		return CS_NO_CARD;
+
+	if (!(c->state & CONFIG_LOCKED))
+		return CS_CONFIGURATION_LOCKED;
+
+	addr = (c->ConfigBase + reg->Offset) >> 1;
+
+	switch (reg->Action) {
+	case CS_READ:
+		pcmcia_read_cis_mem(s, 1, addr, 1, &val);
+		reg->Value = val;
+		break;
+	case CS_WRITE:
+		val = reg->Value;
+		pcmcia_write_cis_mem(s, 1, addr, 1, &val);
+		break;
+	default:
+		return CS_BAD_ARGS;
+		break;
+	}
+	return CS_SUCCESS;
+} /* pccard_access_configuration_register */
+EXPORT_SYMBOL(pccard_access_configuration_register);
+
+
+int pccard_get_configuration_info(struct pcmcia_socket *s,
+				  unsigned int function,
+				  config_info_t *config)
+{
+	config_t *c;
+
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+
+	config->Function = function;
+
+#ifdef CONFIG_CARDBUS
+	if (s->state & SOCKET_CARDBUS) {
+		memset(config, 0, sizeof(config_info_t));
+		config->Vcc = s->socket.Vcc;
+		config->Vpp1 = config->Vpp2 = s->socket.Vpp;
+		config->Option = s->cb_dev->subordinate->number;
+		if (s->state & SOCKET_CARDBUS_CONFIG) {
+			config->Attributes = CONF_VALID_CLIENT;
+			config->IntType = INT_CARDBUS;
+			config->AssignedIRQ = s->irq.AssignedIRQ;
+			if (config->AssignedIRQ)
+				config->Attributes |= CONF_ENABLE_IRQ;
+			config->BasePort1 = s->io[0].BasePort;
+			config->NumPorts1 = s->io[0].NumPorts;
+		}
+		return CS_SUCCESS;
+	}
+#endif
+
+	c = (s->config != NULL) ? &s->config[function] : NULL;
+
+	if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
+		config->Attributes = 0;
+		config->Vcc = s->socket.Vcc;
+		config->Vpp1 = config->Vpp2 = s->socket.Vpp;
+		return CS_SUCCESS;
+	}
+
+	/* !!! This is a hack !!! */
+	memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
+	config->Attributes |= CONF_VALID_CLIENT;
+	config->CardValues = c->CardValues;
+	config->IRQAttributes = c->irq.Attributes;
+	config->AssignedIRQ = s->irq.AssignedIRQ;
+	config->BasePort1 = c->io.BasePort1;
+	config->NumPorts1 = c->io.NumPorts1;
+	config->Attributes1 = c->io.Attributes1;
+	config->BasePort2 = c->io.BasePort2;
+	config->NumPorts2 = c->io.NumPorts2;
+	config->Attributes2 = c->io.Attributes2;
+	config->IOAddrLines = c->io.IOAddrLines;
+
+	return CS_SUCCESS;
+} /* pccard_get_configuration_info */
+EXPORT_SYMBOL(pccard_get_configuration_info);
+
+
+/** pcmcia_get_card_services_info
+ *
+ * Return information about this version of Card Services
+ */
+
+int pcmcia_get_card_services_info(servinfo_t *info)
+{
+	unsigned int socket_count = 0;
+	struct list_head *tmp;
+	info->Signature[0] = 'C';
+	info->Signature[1] = 'S';
+	down_read(&pcmcia_socket_list_rwsem);
+	list_for_each(tmp, &pcmcia_socket_list)
+		socket_count++;
+	up_read(&pcmcia_socket_list_rwsem);
+	info->Count = socket_count;
+	info->Revision = CS_RELEASE_CODE;
+	info->CSLevel = 0x0210;
+	info->VendorString = (char *)release;
+	return CS_SUCCESS;
+} /* get_card_services_info */
+EXPORT_SYMBOL(pcmcia_get_card_services_info);
+
+
+/** pcmcia_get_window
+ */
+int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
+		      int idx, win_req_t *req)
+{
+	window_t *win;
+	int w;
+
+	if (!s || !(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+	for (w = idx; w < MAX_WIN; w++)
+		if (s->state & SOCKET_WIN_REQ(w))
+			break;
+	if (w == MAX_WIN)
+		return CS_NO_MORE_ITEMS;
+	win = &s->win[w];
+	req->Base = win->ctl.res->start;
+	req->Size = win->ctl.res->end - win->ctl.res->start + 1;
+	req->AccessSpeed = win->ctl.speed;
+	req->Attributes = 0;
+	if (win->ctl.flags & MAP_ATTRIB)
+		req->Attributes |= WIN_MEMORY_TYPE_AM;
+	if (win->ctl.flags & MAP_ACTIVE)
+		req->Attributes |= WIN_ENABLE;
+	if (win->ctl.flags & MAP_16BIT)
+		req->Attributes |= WIN_DATA_WIDTH_16;
+	if (win->ctl.flags & MAP_USE_WAIT)
+		req->Attributes |= WIN_USE_WAIT;
+	*handle = win;
+	return CS_SUCCESS;
+} /* pcmcia_get_window */
+EXPORT_SYMBOL(pcmcia_get_window);
+
+
+/** pccard_get_status
+ *
+ * Get the current socket state bits.  We don't support the latched
+ * SocketState yet: I haven't seen any point for it.
+ */
+
+int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
+		      cs_status_t *status)
+{
+	config_t *c;
+	int val;
+
+	s->ops->get_status(s, &val);
+	status->CardState = status->SocketState = 0;
+	status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
+	status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
+	status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
+	status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
+	if (s->state & SOCKET_SUSPEND)
+		status->CardState |= CS_EVENT_PM_SUSPEND;
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+
+	c = (s->config != NULL) ? &s->config[function] : NULL;
+	if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
+	    (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
+		u_char reg;
+		if (c->Present & PRESENT_PIN_REPLACE) {
+			pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
+			status->CardState |=
+				(reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
+			status->CardState |=
+				(reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
+			status->CardState |=
+				(reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
+			status->CardState |=
+				(reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
+		} else {
+			/* No PRR?  Then assume we're always ready */
+			status->CardState |= CS_EVENT_READY_CHANGE;
+		}
+		if (c->Present & PRESENT_EXT_STATUS) {
+			pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
+			status->CardState |=
+				(reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
+		}
+		return CS_SUCCESS;
+	}
+	status->CardState |=
+		(val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
+	status->CardState |=
+		(val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
+	status->CardState |=
+		(val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
+	status->CardState |=
+		(val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
+	return CS_SUCCESS;
+} /* pccard_get_status */
+EXPORT_SYMBOL(pccard_get_status);
+
+
+/** pcmcia_get_mem_page
+ *
+ * Change the card address of an already open memory window.
+ */
+int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
+{
+	if ((win == NULL) || (win->magic != WINDOW_MAGIC))
+		return CS_BAD_HANDLE;
+	req->Page = 0;
+	req->CardOffset = win->ctl.card_start;
+	return CS_SUCCESS;
+} /* pcmcia_get_mem_page */
+EXPORT_SYMBOL(pcmcia_get_mem_page);
+
+
+int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
+{
+	struct pcmcia_socket *s;
+	if ((win == NULL) || (win->magic != WINDOW_MAGIC))
+		return CS_BAD_HANDLE;
+	if (req->Page != 0)
+		return CS_BAD_PAGE;
+	s = win->sock;
+	win->ctl.card_start = req->CardOffset;
+	if (s->ops->set_mem_map(s, &win->ctl) != 0)
+		return CS_BAD_OFFSET;
+	return CS_SUCCESS;
+} /* pcmcia_map_mem_page */
+EXPORT_SYMBOL(pcmcia_map_mem_page);
+
+
+/** pcmcia_modify_configuration
+ *
+ * Modify a locked socket configuration
+ */
+int pcmcia_modify_configuration(client_handle_t handle,
+				modconf_t *mod)
+{
+	struct pcmcia_socket *s;
+	config_t *c;
+
+	if (CHECK_HANDLE(handle))
+		return CS_BAD_HANDLE;
+	s = SOCKET(handle);
+	c = CONFIG(handle);
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+	if (!(c->state & CONFIG_LOCKED))
+		return CS_CONFIGURATION_LOCKED;
+
+	if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
+		if (mod->Attributes & CONF_ENABLE_IRQ) {
+			c->Attributes |= CONF_ENABLE_IRQ;
+			s->socket.io_irq = s->irq.AssignedIRQ;
+		} else {
+			c->Attributes &= ~CONF_ENABLE_IRQ;
+			s->socket.io_irq = 0;
+		}
+		s->ops->set_socket(s, &s->socket);
+	}
+
+	if (mod->Attributes & CONF_VCC_CHANGE_VALID)
+		return CS_BAD_VCC;
+
+	/* We only allow changing Vpp1 and Vpp2 to the same value */
+	if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
+	    (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
+		if (mod->Vpp1 != mod->Vpp2)
+			return CS_BAD_VPP;
+		c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
+		if (s->ops->set_socket(s, &s->socket))
+			return CS_BAD_VPP;
+	} else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
+		   (mod->Attributes & CONF_VPP2_CHANGE_VALID))
+		return CS_BAD_VPP;
+
+	return CS_SUCCESS;
+} /* modify_configuration */
+EXPORT_SYMBOL(pcmcia_modify_configuration);
+
+
+int pcmcia_release_configuration(client_handle_t handle)
+{
+	pccard_io_map io = { 0, 0, 0, 0, 1 };
+	struct pcmcia_socket *s;
+	int i;
+
+	if (CHECK_HANDLE(handle) ||
+	    !(handle->state & CLIENT_CONFIG_LOCKED))
+		return CS_BAD_HANDLE;
+	handle->state &= ~CLIENT_CONFIG_LOCKED;
+	s = SOCKET(handle);
+
+#ifdef CONFIG_CARDBUS
+	if (handle->state & CLIENT_CARDBUS)
+		return CS_SUCCESS;
+#endif
+
+	if (!(handle->state & CLIENT_STALE)) {
+		config_t *c = CONFIG(handle);
+		if (--(s->lock_count) == 0) {
+			s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
+			s->socket.Vpp = 0;
+			s->socket.io_irq = 0;
+			s->ops->set_socket(s, &s->socket);
+		}
+		if (c->state & CONFIG_IO_REQ)
+			for (i = 0; i < MAX_IO_WIN; i++) {
+				if (s->io[i].NumPorts == 0)
+					continue;
+				s->io[i].Config--;
+				if (s->io[i].Config != 0)
+					continue;
+				io.map = i;
+				s->ops->set_io_map(s, &io);
+			}
+		c->state &= ~CONFIG_LOCKED;
+	}
+
+	return CS_SUCCESS;
+} /* pcmcia_release_configuration */
+EXPORT_SYMBOL(pcmcia_release_configuration);
+
+
+/** pcmcia_release_io
+ *
+ * Release_io() releases the I/O ranges allocated by a client.  This
+ * may be invoked some time after a card ejection has already dumped
+ * the actual socket configuration, so if the client is "stale", we
+ * don't bother checking the port ranges against the current socket
+ * values.
+ */
+int pcmcia_release_io(client_handle_t handle, io_req_t *req)
+{
+	struct pcmcia_socket *s;
+
+	if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ))
+		return CS_BAD_HANDLE;
+	handle->state &= ~CLIENT_IO_REQ;
+	s = SOCKET(handle);
+
+#ifdef CONFIG_CARDBUS
+	if (handle->state & CLIENT_CARDBUS)
+		return CS_SUCCESS;
+#endif
+
+	if (!(handle->state & CLIENT_STALE)) {
+		config_t *c = CONFIG(handle);
+		if (c->state & CONFIG_LOCKED)
+			return CS_CONFIGURATION_LOCKED;
+		if ((c->io.BasePort1 != req->BasePort1) ||
+		    (c->io.NumPorts1 != req->NumPorts1) ||
+		    (c->io.BasePort2 != req->BasePort2) ||
+		    (c->io.NumPorts2 != req->NumPorts2))
+			return CS_BAD_ARGS;
+		c->state &= ~CONFIG_IO_REQ;
+	}
+
+	release_io_space(s, req->BasePort1, req->NumPorts1);
+	if (req->NumPorts2)
+		release_io_space(s, req->BasePort2, req->NumPorts2);
+
+	return CS_SUCCESS;
+} /* pcmcia_release_io */
+EXPORT_SYMBOL(pcmcia_release_io);
+
+
+int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
+{
+	struct pcmcia_socket *s;
+	if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ))
+		return CS_BAD_HANDLE;
+	handle->state &= ~CLIENT_IRQ_REQ;
+	s = SOCKET(handle);
+
+	if (!(handle->state & CLIENT_STALE)) {
+		config_t *c = CONFIG(handle);
+		if (c->state & CONFIG_LOCKED)
+			return CS_CONFIGURATION_LOCKED;
+		if (c->irq.Attributes != req->Attributes)
+			return CS_BAD_ATTRIBUTE;
+		if (s->irq.AssignedIRQ != req->AssignedIRQ)
+			return CS_BAD_IRQ;
+		if (--s->irq.Config == 0) {
+			c->state &= ~CONFIG_IRQ_REQ;
+			s->irq.AssignedIRQ = 0;
+		}
+	}
+
+	if (req->Attributes & IRQ_HANDLE_PRESENT) {
+		free_irq(req->AssignedIRQ, req->Instance);
+	}
+
+#ifdef CONFIG_PCMCIA_PROBE
+	pcmcia_used_irq[req->AssignedIRQ]--;
+#endif
+
+	return CS_SUCCESS;
+} /* pcmcia_release_irq */
+EXPORT_SYMBOL(pcmcia_release_irq);
+
+
+int pcmcia_release_window(window_handle_t win)
+{
+	struct pcmcia_socket *s;
+
+	if ((win == NULL) || (win->magic != WINDOW_MAGIC))
+		return CS_BAD_HANDLE;
+	s = win->sock;
+	if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
+		return CS_BAD_HANDLE;
+
+	/* Shut down memory window */
+	win->ctl.flags &= ~MAP_ACTIVE;
+	s->ops->set_mem_map(s, &win->ctl);
+	s->state &= ~SOCKET_WIN_REQ(win->index);
+
+	/* Release system memory */
+	if (win->ctl.res) {
+		release_resource(win->ctl.res);
+		kfree(win->ctl.res);
+		win->ctl.res = NULL;
+	}
+	win->handle->state &= ~CLIENT_WIN_REQ(win->index);
+
+	win->magic = 0;
+
+	return CS_SUCCESS;
+} /* pcmcia_release_window */
+EXPORT_SYMBOL(pcmcia_release_window);
+
+
+int pcmcia_request_configuration(client_handle_t handle,
+				 config_req_t *req)
+{
+	int i;
+	u_int base;
+	struct pcmcia_socket *s;
+	config_t *c;
+	pccard_io_map iomap;
+
+	if (CHECK_HANDLE(handle))
+		return CS_BAD_HANDLE;
+	s = SOCKET(handle);
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+
+#ifdef CONFIG_CARDBUS
+	if (handle->state & CLIENT_CARDBUS)
+		return CS_UNSUPPORTED_MODE;
+#endif
+
+	if (req->IntType & INT_CARDBUS)
+		return CS_UNSUPPORTED_MODE;
+	c = CONFIG(handle);
+	if (c->state & CONFIG_LOCKED)
+		return CS_CONFIGURATION_LOCKED;
+
+	/* Do power control.  We don't allow changes in Vcc. */
+	if (s->socket.Vcc != req->Vcc)
+		return CS_BAD_VCC;
+	if (req->Vpp1 != req->Vpp2)
+		return CS_BAD_VPP;
+	s->socket.Vpp = req->Vpp1;
+	if (s->ops->set_socket(s, &s->socket))
+		return CS_BAD_VPP;
+
+	c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
+
+	/* Pick memory or I/O card, DMA mode, interrupt */
+	c->IntType = req->IntType;
+	c->Attributes = req->Attributes;
+	if (req->IntType & INT_MEMORY_AND_IO)
+		s->socket.flags |= SS_IOCARD;
+	if (req->IntType & INT_ZOOMED_VIDEO)
+		s->socket.flags |= SS_ZVCARD | SS_IOCARD;
+	if (req->Attributes & CONF_ENABLE_DMA)
+		s->socket.flags |= SS_DMA_MODE;
+	if (req->Attributes & CONF_ENABLE_SPKR)
+		s->socket.flags |= SS_SPKR_ENA;
+	if (req->Attributes & CONF_ENABLE_IRQ)
+		s->socket.io_irq = s->irq.AssignedIRQ;
+	else
+		s->socket.io_irq = 0;
+	s->ops->set_socket(s, &s->socket);
+	s->lock_count++;
+
+	/* Set up CIS configuration registers */
+	base = c->ConfigBase = req->ConfigBase;
+	c->Present = c->CardValues = req->Present;
+	if (req->Present & PRESENT_COPY) {
+		c->Copy = req->Copy;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
+	}
+	if (req->Present & PRESENT_OPTION) {
+		if (s->functions == 1) {
+			c->Option = req->ConfigIndex & COR_CONFIG_MASK;
+		} else {
+			c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
+			c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
+			if (req->Present & PRESENT_IOBASE_0)
+				c->Option |= COR_ADDR_DECODE;
+		}
+		if (c->state & CONFIG_IRQ_REQ)
+			if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
+				c->Option |= COR_LEVEL_REQ;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
+		mdelay(40);
+	}
+	if (req->Present & PRESENT_STATUS) {
+		c->Status = req->Status;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
+	}
+	if (req->Present & PRESENT_PIN_REPLACE) {
+		c->Pin = req->Pin;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
+	}
+	if (req->Present & PRESENT_EXT_STATUS) {
+		c->ExtStatus = req->ExtStatus;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
+	}
+	if (req->Present & PRESENT_IOBASE_0) {
+		u_char b = c->io.BasePort1 & 0xff;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
+		b = (c->io.BasePort1 >> 8) & 0xff;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
+	}
+	if (req->Present & PRESENT_IOSIZE) {
+		u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
+		pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
+	}
+
+	/* Configure I/O windows */
+	if (c->state & CONFIG_IO_REQ) {
+		iomap.speed = io_speed;
+		for (i = 0; i < MAX_IO_WIN; i++)
+			if (s->io[i].NumPorts != 0) {
+				iomap.map = i;
+				iomap.flags = MAP_ACTIVE;
+				switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
+				case IO_DATA_PATH_WIDTH_16:
+					iomap.flags |= MAP_16BIT; break;
+				case IO_DATA_PATH_WIDTH_AUTO:
+					iomap.flags |= MAP_AUTOSZ; break;
+				default:
+					break;
+				}
+				iomap.start = s->io[i].BasePort;
+				iomap.stop = iomap.start + s->io[i].NumPorts - 1;
+				s->ops->set_io_map(s, &iomap);
+				s->io[i].Config++;
+			}
+	}
+
+	c->state |= CONFIG_LOCKED;
+	handle->state |= CLIENT_CONFIG_LOCKED;
+	return CS_SUCCESS;
+} /* pcmcia_request_configuration */
+EXPORT_SYMBOL(pcmcia_request_configuration);
+
+
+/** pcmcia_request_io
+ *
+ * Request_io() reserves ranges of port addresses for a socket.
+ * I have not implemented range sharing or alias addressing.
+ */
+int pcmcia_request_io(client_handle_t handle, io_req_t *req)
+{
+	struct pcmcia_socket *s;
+	config_t *c;
+
+	if (CHECK_HANDLE(handle))
+		return CS_BAD_HANDLE;
+	s = SOCKET(handle);
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+
+	if (handle->state & CLIENT_CARDBUS) {
+#ifdef CONFIG_CARDBUS
+		handle->state |= CLIENT_IO_REQ;
+		return CS_SUCCESS;
+#else
+		return CS_UNSUPPORTED_FUNCTION;
+#endif
+	}
+
+	if (!req)
+		return CS_UNSUPPORTED_MODE;
+	c = CONFIG(handle);
+	if (c->state & CONFIG_LOCKED)
+		return CS_CONFIGURATION_LOCKED;
+	if (c->state & CONFIG_IO_REQ)
+		return CS_IN_USE;
+	if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
+		return CS_BAD_ATTRIBUTE;
+	if ((req->NumPorts2 > 0) &&
+	    (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
+		return CS_BAD_ATTRIBUTE;
+
+	if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
+			   req->NumPorts1, req->IOAddrLines))
+		return CS_IN_USE;
+
+	if (req->NumPorts2) {
+		if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
+				   req->NumPorts2, req->IOAddrLines)) {
+			release_io_space(s, req->BasePort1, req->NumPorts1);
+			return CS_IN_USE;
+		}
+	}
+
+	c->io = *req;
+	c->state |= CONFIG_IO_REQ;
+	handle->state |= CLIENT_IO_REQ;
+	return CS_SUCCESS;
+} /* pcmcia_request_io */
+EXPORT_SYMBOL(pcmcia_request_io);
+
+
+/** pcmcia_request_irq
+ *
+ * Request_irq() reserves an irq for this client.
+ *
+ * Also, since Linux only reserves irq's when they are actually
+ * hooked, we don't guarantee that an irq will still be available
+ * when the configuration is locked.  Now that I think about it,
+ * there might be a way to fix this using a dummy handler.
+ */
+
+#ifdef CONFIG_PCMCIA_PROBE
+static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
+{
+	return IRQ_NONE;
+}
+#endif
+
+int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
+{
+	struct pcmcia_socket *s;
+	config_t *c;
+	int ret = CS_IN_USE, irq = 0;
+	struct pcmcia_device *p_dev = handle_to_pdev(handle);
+
+	if (CHECK_HANDLE(handle))
+		return CS_BAD_HANDLE;
+	s = SOCKET(handle);
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+	c = CONFIG(handle);
+	if (c->state & CONFIG_LOCKED)
+		return CS_CONFIGURATION_LOCKED;
+	if (c->state & CONFIG_IRQ_REQ)
+		return CS_IN_USE;
+
+#ifdef CONFIG_PCMCIA_PROBE
+	if (s->irq.AssignedIRQ != 0) {
+		/* If the interrupt is already assigned, it must be the same */
+		irq = s->irq.AssignedIRQ;
+	} else {
+		int try;
+		u32 mask = s->irq_mask;
+		void *data = NULL;
+
+		for (try = 0; try < 64; try++) {
+			irq = try % 32;
+
+			/* marked as available by driver, and not blocked by userspace? */
+			if (!((mask >> irq) & 1))
+				continue;
+
+			/* avoid an IRQ which is already used by a PCMCIA card */
+			if ((try < 32) && pcmcia_used_irq[irq])
+				continue;
+
+			/* register the correct driver, if possible, of check whether
+			 * registering a dummy handle works, i.e. if the IRQ isn't
+			 * marked as used by the kernel resource management core */
+			ret = request_irq(irq,
+					  (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
+					  ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
+					   (s->functions > 1) ||
+					   (irq == s->pci_irq)) ? SA_SHIRQ : 0,
+					  p_dev->dev.bus_id,
+					  (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
+			if (!ret) {
+				if (!(req->Attributes & IRQ_HANDLE_PRESENT))
+					free_irq(irq, data);
+				break;
+			}
+		}
+	}
+#endif
+	if (ret) {
+		if (!s->pci_irq)
+			return ret;
+		irq = s->pci_irq;
+	}
+
+	if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
+		if (request_irq(irq, req->Handler,
+				((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
+				 (s->functions > 1) ||
+				 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
+				p_dev->dev.bus_id, req->Instance))
+			return CS_IN_USE;
+	}
+
+	c->irq.Attributes = req->Attributes;
+	s->irq.AssignedIRQ = req->AssignedIRQ = irq;
+	s->irq.Config++;
+
+	c->state |= CONFIG_IRQ_REQ;
+	handle->state |= CLIENT_IRQ_REQ;
+
+#ifdef CONFIG_PCMCIA_PROBE
+	pcmcia_used_irq[irq]++;
+#endif
+
+	return CS_SUCCESS;
+} /* pcmcia_request_irq */
+EXPORT_SYMBOL(pcmcia_request_irq);
+
+
+/** pcmcia_request_window
+ *
+ * Request_window() establishes a mapping between card memory space
+ * and system memory space.
+ */
+int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
+{
+	struct pcmcia_socket *s;
+	window_t *win;
+	u_long align;
+	int w;
+
+	if (CHECK_HANDLE(*handle))
+		return CS_BAD_HANDLE;
+	s = (*handle)->Socket;
+	if (!(s->state & SOCKET_PRESENT))
+		return CS_NO_CARD;
+	if (req->Attributes & (WIN_PAGED | WIN_SHARED))
+		return CS_BAD_ATTRIBUTE;
+
+	/* Window size defaults to smallest available */
+	if (req->Size == 0)
+		req->Size = s->map_size;
+	align = (((s->features & SS_CAP_MEM_ALIGN) ||
+		  (req->Attributes & WIN_STRICT_ALIGN)) ?
+		 req->Size : s->map_size);
+	if (req->Size & (s->map_size-1))
+		return CS_BAD_SIZE;
+	if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
+	    (req->Base & (align-1)))
+		return CS_BAD_BASE;
+	if (req->Base)
+		align = 0;
+
+	/* Allocate system memory window */
+	for (w = 0; w < MAX_WIN; w++)
+		if (!(s->state & SOCKET_WIN_REQ(w))) break;
+	if (w == MAX_WIN)
+		return CS_OUT_OF_RESOURCE;
+
+	win = &s->win[w];
+	win->magic = WINDOW_MAGIC;
+	win->index = w;
+	win->handle = *handle;
+	win->sock = s;
+
+	if (!(s->features & SS_CAP_STATIC_MAP)) {
+		win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
+						      (req->Attributes & WIN_MAP_BELOW_1MB), s);
+		if (!win->ctl.res)
+			return CS_IN_USE;
+	}
+	(*handle)->state |= CLIENT_WIN_REQ(w);
+
+	/* Configure the socket controller */
+	win->ctl.map = w+1;
+	win->ctl.flags = 0;
+	win->ctl.speed = req->AccessSpeed;
+	if (req->Attributes & WIN_MEMORY_TYPE)
+		win->ctl.flags |= MAP_ATTRIB;
+	if (req->Attributes & WIN_ENABLE)
+		win->ctl.flags |= MAP_ACTIVE;
+	if (req->Attributes & WIN_DATA_WIDTH_16)
+		win->ctl.flags |= MAP_16BIT;
+	if (req->Attributes & WIN_USE_WAIT)
+		win->ctl.flags |= MAP_USE_WAIT;
+	win->ctl.card_start = 0;
+	if (s->ops->set_mem_map(s, &win->ctl) != 0)
+		return CS_BAD_ARGS;
+	s->state |= SOCKET_WIN_REQ(w);
+
+	/* Return window handle */
+	if (s->features & SS_CAP_STATIC_MAP) {
+		req->Base = win->ctl.static_start;
+	} else {
+		req->Base = win->ctl.res->start;
+	}
+	*wh = win;
+
+	return CS_SUCCESS;
+} /* pcmcia_request_window */
+EXPORT_SYMBOL(pcmcia_request_window);