* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
*
* Copyright (C) 1999 David A. Hinds
- * Copyright (C) 2004-2005 Dominik Brodowski
+ * Copyright (C) 2004-2010 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
*
*/
-#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>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+
+#include <asm/irq.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"
/* Access speed for IO windows */
-static int io_speed = 0;
+static int io_speed;
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
+int pcmcia_validate_mem(struct pcmcia_socket *s)
+{
+ if (s->resource_ops->validate_mem)
+ return s->resource_ops->validate_mem(s);
+ /* if there is no callback, we can assume that everything is OK */
+ return 0;
+}
+
+struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
+ int low, struct pcmcia_socket *s)
+{
+ if (s->resource_ops->find_mem)
+ return s->resource_ops->find_mem(base, num, align, low, s);
+ return NULL;
+}
-#ifdef DEBUG
-extern int ds_pc_debug;
-#define cs_socket_name(skt) ((skt)->dev.class_id)
+/**
+ * release_io_space() - release IO ports allocated with alloc_io_space()
+ * @s: pcmcia socket
+ * @res: resource to release
+ *
+ */
+static void release_io_space(struct pcmcia_socket *s, struct resource *res)
+{
+ resource_size_t num = resource_size(res);
+ int i;
-#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
+ dev_dbg(&s->dev, "release_io_space for %pR\n", res);
+ for (i = 0; i < MAX_IO_WIN; i++) {
+ if (!s->io[i].res)
+ continue;
+ if ((s->io[i].res->start <= res->start) &&
+ (s->io[i].res->end >= res->end)) {
+ s->io[i].InUse -= num;
+ if (res->parent)
+ release_resource(res);
+ res->start = res->end = 0;
+ res->flags = IORESOURCE_IO;
+ /* Free the window if no one else is using it */
+ if (s->io[i].InUse == 0) {
+ release_resource(s->io[i].res);
+ kfree(s->io[i].res);
+ s->io[i].res = NULL;
+ }
+ }
+ }
+}
-/** alloc_io_space
+/**
+ * alloc_io_space() - allocate IO ports for use by a PCMCIA device
+ * @s: pcmcia socket
+ * @res: resource to allocate (begin: begin, end: size)
+ * @lines: number of IO lines decoded by the PCMCIA card
*
* 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)
+static int alloc_io_space(struct pcmcia_socket *s, struct resource *res,
+ unsigned int lines)
{
- int i;
- kio_addr_t try, align;
+ unsigned int align;
+ unsigned int base = res->start;
+ unsigned int num = res->end;
+ int ret;
+
+ res->flags |= IORESOURCE_IO;
+
+ dev_dbg(&s->dev, "alloc_io_space request for %pR, %d lines\n",
+ res, lines);
- align = (*base) ? (lines ? 1<<lines : 0) : 1;
+ 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);
+ if (base) {
+ dev_dbg(&s->dev, "odd IO request\n");
align = 0;
} else
- while (align && (align < num)) align <<= 1;
+ while (align && (align < num))
+ align <<= 1;
}
- if (*base & ~(align-1)) {
- ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
- *base, align);
+ if (base & ~(align-1)) {
+ dev_dbg(&s->dev, "odd IO request\n");
align = 0;
}
- if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
- *base = s->io_offset | (*base & 0x0fff);
- s->io[0].Attributes = attr;
- 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 */
+ ret = s->resource_ops->find_io(s, res->flags, &base, num, align,
+ &res->parent);
+ if (ret) {
+ dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret);
+ return -EINVAL;
+ }
-static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
- ioaddr_t num)
-{
- int i;
+ res->start = base;
+ res->end = res->start + num - 1;
- 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;
- }
+ if (res->parent) {
+ ret = request_resource(res->parent, res);
+ if (ret) {
+ dev_warn(&s->dev,
+ "request_resource %pR failed: %d\n", res, ret);
+ res->parent = NULL;
+ release_io_space(s, res);
}
}
-} /* release_io_space */
+ dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res);
+ return ret;
+}
-/** pccard_access_configuration_register
+/**
+ * pcmcia_access_config() - read or write card configuration registers
*
- * Access_configuration_register() reads and writes configuration
- * registers in attribute memory. Memory window 0 is reserved for
- * this and the tuple reading services.
+ * pcmcia_access_config() reads and writes configuration registers in
+ * attribute memory. Memory window 0 is reserved for this and the tuple
+ * reading services. Drivers must use pcmcia_read_config_byte() or
+ * pcmcia_write_config_byte().
*/
-
-int pccard_access_configuration_register(struct pcmcia_socket *s,
- unsigned int function,
- conf_reg_t *reg)
+static int pcmcia_access_config(struct pcmcia_device *p_dev,
+ off_t where, u8 *val,
+ int (*accessf) (struct pcmcia_socket *s,
+ int attr, unsigned int addr,
+ unsigned int len, void *ptr))
{
+ struct pcmcia_socket *s;
config_t *c;
int addr;
- u_char val;
+ int ret = 0;
- if (!s || !s->config)
- return CS_NO_CARD;
+ s = p_dev->socket;
- c = &s->config[function];
+ mutex_lock(&s->ops_mutex);
+ c = p_dev->function_config;
- if (c == NULL)
- return CS_NO_CARD;
+ if (!(c->state & CONFIG_LOCKED)) {
+ dev_dbg(&p_dev->dev, "Configuration isnt't locked\n");
+ mutex_unlock(&s->ops_mutex);
+ return -EACCES;
+ }
- if (!(c->state & CONFIG_LOCKED))
- return CS_CONFIGURATION_LOCKED;
+ addr = (p_dev->config_base + where) >> 1;
- addr = (c->ConfigBase + reg->Offset) >> 1;
+ ret = accessf(s, 1, addr, 1, val);
- 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 */
+ mutex_unlock(&s->ops_mutex);
-int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
- conf_reg_t *reg)
-{
- return pccard_access_configuration_register(p_dev->socket,
- p_dev->func, reg);
+ return ret;
}
-EXPORT_SYMBOL(pcmcia_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 */
-
-int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
- config_info_t *config)
+/**
+ * pcmcia_read_config_byte() - read a byte from a card configuration register
+ *
+ * pcmcia_read_config_byte() reads a byte from a configuration register in
+ * attribute memory.
+ */
+int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val)
{
- return pccard_get_configuration_info(p_dev->socket, p_dev->func,
- config);
+ return pcmcia_access_config(p_dev, where, val, pcmcia_read_cis_mem);
}
-EXPORT_SYMBOL(pcmcia_get_configuration_info);
+EXPORT_SYMBOL(pcmcia_read_config_byte);
-/** pcmcia_get_window
+/**
+ * pcmcia_write_config_byte() - write a byte to a card configuration register
+ *
+ * pcmcia_write_config_byte() writes a byte to a configuration register in
+ * attribute memory.
*/
-int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
- int idx, win_req_t *req)
+int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val)
{
- window_t *win;
- int w;
+ return pcmcia_access_config(p_dev, where, &val, pcmcia_write_cis_mem);
+}
+EXPORT_SYMBOL(pcmcia_write_config_byte);
- 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
+
+/**
+ * pcmcia_map_mem_page() - modify iomem window to point to a different offset
+ * @p_dev: pcmcia device
+ * @res: iomem resource already enabled by pcmcia_request_window()
+ * @offset: card_offset to map
*
- * Get the current socket state bits. We don't support the latched
- * SocketState yet: I haven't seen any point for it.
+ * pcmcia_map_mem_page() modifies what can be read and written by accessing
+ * an iomem range previously enabled by pcmcia_request_window(), by setting
+ * the card_offset value to @offset.
*/
-
-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, ®);
- 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, ®);
- 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 */
-
-int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
+int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
+ unsigned int offset)
{
- struct pcmcia_socket *s;
- s = SOCKET(handle);
- return pccard_get_status(s, handle->func, status);
+ struct pcmcia_socket *s = p_dev->socket;
+ unsigned int w;
+ int ret;
+
+ w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
+ if (w >= MAX_WIN)
+ return -EINVAL;
+
+ mutex_lock(&s->ops_mutex);
+ s->win[w].card_start = offset;
+ ret = s->ops->set_mem_map(s, &s->win[w]);
+ if (ret)
+ dev_warn(&p_dev->dev, "failed to set_mem_map\n");
+ mutex_unlock(&s->ops_mutex);
+ return ret;
}
-EXPORT_SYMBOL(pcmcia_get_status);
-
+EXPORT_SYMBOL(pcmcia_map_mem_page);
-/** pcmcia_get_mem_page
+/**
+ * pcmcia_fixup_iowidth() - reduce io width to 8bit
+ * @p_dev: pcmcia device
*
- * Change the card address of an already open memory window.
+ * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the
+ * IO width to 8bit after having called pcmcia_enable_device()
+ * previously.
*/
-int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
+int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev)
{
- 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);
+ struct pcmcia_socket *s = p_dev->socket;
+ pccard_io_map io_off = { 0, 0, 0, 0, 1 };
+ pccard_io_map io_on;
+ int i, ret = 0;
+ mutex_lock(&s->ops_mutex);
-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);
+ dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n");
+
+ if (!(s->state & SOCKET_PRESENT) ||
+ !(p_dev->function_config->state & CONFIG_LOCKED)) {
+ dev_dbg(&p_dev->dev, "No card? Config not locked?\n");
+ ret = -EACCES;
+ goto unlock;
+ }
+
+ io_on.speed = io_speed;
+ for (i = 0; i < MAX_IO_WIN; i++) {
+ if (!s->io[i].res)
+ continue;
+ io_off.map = i;
+ io_on.map = i;
+
+ io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
+ io_on.start = s->io[i].res->start;
+ io_on.stop = s->io[i].res->end;
+
+ s->ops->set_io_map(s, &io_off);
+ mdelay(40);
+ s->ops->set_io_map(s, &io_on);
+ }
+unlock:
+ mutex_unlock(&s->ops_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL(pcmcia_fixup_iowidth);
-/** pcmcia_modify_configuration
+/**
+ * pcmcia_fixup_vpp() - set Vpp to a new voltage level
+ * @p_dev: pcmcia device
+ * @new_vpp: new Vpp voltage
*
- * Modify a locked socket configuration
+ * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to
+ * a new voltage level between calls to pcmcia_enable_device()
+ * and pcmcia_disable_device().
*/
-int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
- modconf_t *mod)
+int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp)
{
- struct pcmcia_socket *s;
- config_t *c;
+ struct pcmcia_socket *s = p_dev->socket;
+ int ret = 0;
- s = p_dev->socket;
- c = CONFIG(p_dev);
- 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);
+ mutex_lock(&s->ops_mutex);
+
+ dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp);
+
+ if (!(s->state & SOCKET_PRESENT) ||
+ !(p_dev->function_config->state & CONFIG_LOCKED)) {
+ dev_dbg(&p_dev->dev, "No card? Config not locked?\n");
+ ret = -EACCES;
+ goto unlock;
}
- if (mod->Attributes & CONF_VCC_CHANGE_VALID)
- return CS_BAD_VCC;
+ s->socket.Vpp = new_vpp;
+ if (s->ops->set_socket(s, &s->socket)) {
+ dev_warn(&p_dev->dev, "Unable to set VPP\n");
+ ret = -EIO;
+ goto unlock;
+ }
+ p_dev->vpp = new_vpp;
- /* 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;
+unlock:
+ mutex_unlock(&s->ops_mutex);
- return CS_SUCCESS;
-} /* modify_configuration */
-EXPORT_SYMBOL(pcmcia_modify_configuration);
+ return ret;
+}
+EXPORT_SYMBOL(pcmcia_fixup_vpp);
+/**
+ * pcmcia_release_configuration() - physically disable a PCMCIA device
+ * @p_dev: pcmcia device
+ *
+ * pcmcia_release_configuration() is the 1:1 counterpart to
+ * pcmcia_enable_device(): If a PCMCIA device is no longer used by any
+ * driver, the Vpp voltage is set to 0, IRQs will no longer be generated,
+ * and I/O ranges will be disabled. As pcmcia_release_io() and
+ * pcmcia_release_window() still need to be called, device drivers are
+ * expected to call pcmcia_disable_device() instead.
+ */
int pcmcia_release_configuration(struct pcmcia_device *p_dev)
{
pccard_io_map io = { 0, 0, 0, 0, 1 };
struct pcmcia_socket *s = p_dev->socket;
+ config_t *c;
int i;
- if (!(p_dev->state & CLIENT_CONFIG_LOCKED))
- return CS_BAD_HANDLE;
- p_dev->state &= ~CLIENT_CONFIG_LOCKED;
-
- if (!(p_dev->state & CLIENT_STALE)) {
- config_t *c = CONFIG(p_dev);
+ mutex_lock(&s->ops_mutex);
+ c = p_dev->function_config;
+ if (p_dev->_locked) {
+ p_dev->_locked = 0;
if (--(s->lock_count) == 0) {
- s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
+ 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_LOCKED) {
+ c->state &= ~CONFIG_LOCKED;
if (c->state & CONFIG_IO_REQ)
for (i = 0; i < MAX_IO_WIN; i++) {
- if (s->io[i].NumPorts == 0)
+ if (!s->io[i].res)
continue;
s->io[i].Config--;
if (s->io[i].Config != 0)
io.map = i;
s->ops->set_io_map(s, &io);
}
- c->state &= ~CONFIG_LOCKED;
}
+ mutex_unlock(&s->ops_mutex);
- return CS_SUCCESS;
-} /* pcmcia_release_configuration */
-EXPORT_SYMBOL(pcmcia_release_configuration);
+ return 0;
+}
-/** pcmcia_release_io
+/**
+ * pcmcia_release_io() - release I/O allocated by a PCMCIA device
+ * @p_dev: pcmcia device
*
- * 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.
+ * pcmcia_release_io() releases the I/O ranges allocated by a PCMCIA
+ * device. 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(struct pcmcia_device *p_dev, io_req_t *req)
+static int pcmcia_release_io(struct pcmcia_device *p_dev)
{
struct pcmcia_socket *s = p_dev->socket;
+ int ret = -EINVAL;
+ config_t *c;
- if (!(p_dev->state & CLIENT_IO_REQ))
- return CS_BAD_HANDLE;
- p_dev->state &= ~CLIENT_IO_REQ;
+ mutex_lock(&s->ops_mutex);
+ if (!p_dev->_io)
+ goto out;
- if (!(p_dev->state & CLIENT_STALE)) {
- config_t *c = CONFIG(p_dev);
- 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;
- }
+ c = p_dev->function_config;
+
+ release_io_space(s, &c->io[0]);
+
+ if (c->io[1].end)
+ release_io_space(s, &c->io[1]);
- release_io_space(s, req->BasePort1, req->NumPorts1);
- if (req->NumPorts2)
- release_io_space(s, req->BasePort2, req->NumPorts2);
+ p_dev->_io = 0;
+ c->state &= ~CONFIG_IO_REQ;
- return CS_SUCCESS;
+out:
+ mutex_unlock(&s->ops_mutex);
+
+ return ret;
} /* pcmcia_release_io */
-EXPORT_SYMBOL(pcmcia_release_io);
-int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
+/**
+ * pcmcia_release_window() - release reserved iomem for PCMCIA devices
+ * @p_dev: pcmcia device
+ * @res: iomem resource to release
+ *
+ * pcmcia_release_window() releases &struct resource *res which was
+ * previously reserved by calling pcmcia_request_window().
+ */
+int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res)
{
struct pcmcia_socket *s = p_dev->socket;
- if (!(p_dev->state & CLIENT_IRQ_REQ))
- return CS_BAD_HANDLE;
- p_dev->state &= ~CLIENT_IRQ_REQ;
-
- if (!(p_dev->state & CLIENT_STALE)) {
- config_t *c = CONFIG(p_dev);
- 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);
- }
+ pccard_mem_map *win;
+ unsigned int w;
-#ifdef CONFIG_PCMCIA_PROBE
- pcmcia_used_irq[req->AssignedIRQ]--;
-#endif
-
- return CS_SUCCESS;
-} /* pcmcia_release_irq */
-EXPORT_SYMBOL(pcmcia_release_irq);
+ dev_dbg(&p_dev->dev, "releasing window %pR\n", res);
+ w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
+ if (w >= MAX_WIN)
+ return -EINVAL;
-int pcmcia_release_window(window_handle_t win)
-{
- struct pcmcia_socket *s;
+ mutex_lock(&s->ops_mutex);
+ win = &s->win[w];
- 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;
+ if (!(p_dev->_win & CLIENT_WIN_REQ(w))) {
+ dev_dbg(&p_dev->dev, "not releasing unknown window\n");
+ mutex_unlock(&s->ops_mutex);
+ return -EINVAL;
+ }
/* Shut down memory window */
- win->ctl.flags &= ~MAP_ACTIVE;
- s->ops->set_mem_map(s, &win->ctl);
- s->state &= ~SOCKET_WIN_REQ(win->index);
+ win->flags &= ~MAP_ACTIVE;
+ s->ops->set_mem_map(s, win);
+ s->state &= ~SOCKET_WIN_REQ(w);
/* Release system memory */
- if (win->ctl.res) {
- release_resource(win->ctl.res);
- kfree(win->ctl.res);
- win->ctl.res = NULL;
+ if (win->res) {
+ release_resource(res);
+ release_resource(win->res);
+ kfree(win->res);
+ win->res = NULL;
}
- win->handle->state &= ~CLIENT_WIN_REQ(win->index);
+ res->start = res->end = 0;
+ res->flags = IORESOURCE_MEM;
+ p_dev->_win &= ~CLIENT_WIN_REQ(w);
+ mutex_unlock(&s->ops_mutex);
- win->magic = 0;
-
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_release_window */
EXPORT_SYMBOL(pcmcia_release_window);
-int pcmcia_request_configuration(struct pcmcia_device *p_dev,
- config_req_t *req)
+/**
+ * pcmcia_enable_device() - set up and activate a PCMCIA device
+ * @p_dev: the associated PCMCIA device
+ *
+ * pcmcia_enable_device() physically enables a PCMCIA device. It parses
+ * the flags passed to in @flags and stored in @p_dev->flags and sets up
+ * the Vpp voltage, enables the speaker line, I/O ports and store proper
+ * values to configuration registers.
+ */
+int pcmcia_enable_device(struct pcmcia_device *p_dev)
{
int i;
- u_int base;
+ unsigned int base;
struct pcmcia_socket *s = p_dev->socket;
config_t *c;
pccard_io_map iomap;
+ unsigned char status = 0;
+ unsigned char ext_status = 0;
+ unsigned char option = 0;
+ unsigned int flags = p_dev->config_flags;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
-
- if (req->IntType & INT_CARDBUS)
- return CS_UNSUPPORTED_MODE;
- c = CONFIG(p_dev);
- if (c->state & CONFIG_LOCKED)
- return CS_CONFIGURATION_LOCKED;
+ return -ENODEV;
+
+ mutex_lock(&s->ops_mutex);
+ c = p_dev->function_config;
+ if (c->state & CONFIG_LOCKED) {
+ mutex_unlock(&s->ops_mutex);
+ dev_dbg(&p_dev->dev, "Configuration is locked\n");
+ return -EACCES;
+ }
/* 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;
+ s->socket.Vpp = p_dev->vpp;
+ if (s->ops->set_socket(s, &s->socket)) {
+ mutex_unlock(&s->ops_mutex);
+ dev_printk(KERN_WARNING, &p_dev->dev,
+ "Unable to set socket state\n");
+ return -EINVAL;
+ }
/* Pick memory or I/O card, DMA mode, interrupt */
- c->IntType = req->IntType;
- c->Attributes = req->Attributes;
- if (req->IntType & INT_MEMORY_AND_IO)
+ if (p_dev->_io || flags & CONF_ENABLE_IRQ)
+ flags |= CONF_ENABLE_IOCARD;
+ if (flags & CONF_ENABLE_IOCARD)
s->socket.flags |= SS_IOCARD;
- if (req->IntType & INT_ZOOMED_VIDEO)
+ if (flags & CONF_ENABLE_ZVCARD)
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)
+ if (flags & CONF_ENABLE_SPKR) {
s->socket.flags |= SS_SPKR_ENA;
- if (req->Attributes & CONF_ENABLE_IRQ)
- s->socket.io_irq = s->irq.AssignedIRQ;
+ status = CCSR_AUDIO_ENA;
+ if (!(p_dev->config_regs & PRESENT_STATUS))
+ dev_warn(&p_dev->dev, "speaker requested, but "
+ "PRESENT_STATUS not set!\n");
+ }
+ if (flags & CONF_ENABLE_IRQ)
+ s->socket.io_irq = s->pcmcia_irq;
else
s->socket.io_irq = 0;
+ if (flags & CONF_ENABLE_ESR) {
+ p_dev->config_regs |= PRESENT_EXT_STATUS;
+ ext_status = ESR_REQ_ATTN_ENA;
+ }
s->ops->set_socket(s, &s->socket);
s->lock_count++;
+ dev_dbg(&p_dev->dev,
+ "enable_device: V %d, flags %x, base %x, regs %x, idx %x\n",
+ p_dev->vpp, flags, p_dev->config_base, p_dev->config_regs,
+ p_dev->config_index);
+
/* 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);
+ base = p_dev->config_base;
+ if (p_dev->config_regs & PRESENT_COPY) {
+ u16 tmp = 0;
+ dev_dbg(&p_dev->dev, "clearing CISREG_SCR\n");
+ pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &tmp);
}
- if (req->Present & PRESENT_OPTION) {
+ if (p_dev->config_regs & PRESENT_PIN_REPLACE) {
+ u16 tmp = 0;
+ dev_dbg(&p_dev->dev, "clearing CISREG_PRR\n");
+ pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &tmp);
+ }
+ if (p_dev->config_regs & PRESENT_OPTION) {
if (s->functions == 1) {
- c->Option = req->ConfigIndex & COR_CONFIG_MASK;
+ option = p_dev->config_index & 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;
+ option = p_dev->config_index & COR_MFC_CONFIG_MASK;
+ option |= COR_FUNC_ENA|COR_IREQ_ENA;
+ if (p_dev->config_regs & PRESENT_IOBASE_0)
+ 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);
+ if ((flags & CONF_ENABLE_IRQ) &&
+ !(flags & CONF_ENABLE_PULSE_IRQ))
+ option |= COR_LEVEL_REQ;
+ pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &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;
+ if (p_dev->config_regs & PRESENT_STATUS)
+ pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &status);
+
+ if (p_dev->config_regs & PRESENT_EXT_STATUS)
+ pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1,
+ &ext_status);
+
+ if (p_dev->config_regs & PRESENT_IOBASE_0) {
+ u8 b = c->io[0].start & 0xff;
pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
- b = (c->io.BasePort1 >> 8) & 0xff;
+ b = (c->io[0].start >> 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;
+ if (p_dev->config_regs & PRESENT_IOSIZE) {
+ u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1;
pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
}
if (c->state & CONFIG_IO_REQ) {
iomap.speed = io_speed;
for (i = 0; i < MAX_IO_WIN; i++)
- if (s->io[i].NumPorts != 0) {
+ if (s->io[i].res) {
iomap.map = i;
iomap.flags = MAP_ACTIVE;
- switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
+ switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
case IO_DATA_PATH_WIDTH_16:
iomap.flags |= MAP_16BIT; break;
case IO_DATA_PATH_WIDTH_AUTO:
default:
break;
}
- iomap.start = s->io[i].BasePort;
- iomap.stop = iomap.start + s->io[i].NumPorts - 1;
+ iomap.start = s->io[i].res->start;
+ iomap.stop = s->io[i].res->end;
s->ops->set_io_map(s, &iomap);
s->io[i].Config++;
}
}
c->state |= CONFIG_LOCKED;
- p_dev->state |= CLIENT_CONFIG_LOCKED;
- return CS_SUCCESS;
-} /* pcmcia_request_configuration */
-EXPORT_SYMBOL(pcmcia_request_configuration);
+ p_dev->_locked = 1;
+ mutex_unlock(&s->ops_mutex);
+ return 0;
+} /* pcmcia_enable_device */
+EXPORT_SYMBOL(pcmcia_enable_device);
-/** pcmcia_request_io
+/**
+ * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices
+ * @p_dev: the associated PCMCIA device
*
- * Request_io() reserves ranges of port addresses for a socket.
- * I have not implemented range sharing or alias addressing.
+ * pcmcia_request_io() attempts to reserve the IO port ranges specified in
+ * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The
+ * "start" value is the requested start of the IO port resource; "end"
+ * reflects the number of ports requested. The number of IO lines requested
+ * is specified in &struct pcmcia_device @p_dev->io_lines.
*/
-int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
+int pcmcia_request_io(struct pcmcia_device *p_dev)
{
struct pcmcia_socket *s = p_dev->socket;
- config_t *c;
+ config_t *c = p_dev->function_config;
+ int ret = -EINVAL;
- if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
-
- if (!req)
- return CS_UNSUPPORTED_MODE;
- c = CONFIG(p_dev);
- 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;
- }
+ mutex_lock(&s->ops_mutex);
+ dev_dbg(&p_dev->dev, "pcmcia_request_io: %pR , %pR",
+ &c->io[0], &c->io[1]);
+
+ if (!(s->state & SOCKET_PRESENT)) {
+ dev_dbg(&p_dev->dev, "pcmcia_request_io: No card present\n");
+ goto out;
+ }
+
+ if (c->state & CONFIG_LOCKED) {
+ dev_dbg(&p_dev->dev, "Configuration is locked\n");
+ goto out;
+ }
+ if (c->state & CONFIG_IO_REQ) {
+ dev_dbg(&p_dev->dev, "IO already configured\n");
+ goto out;
}
- c->io = *req;
+ ret = alloc_io_space(s, &c->io[0], p_dev->io_lines);
+ if (ret)
+ goto out;
+
+ if (c->io[1].end) {
+ ret = alloc_io_space(s, &c->io[1], p_dev->io_lines);
+ if (ret) {
+ struct resource tmp = c->io[0];
+ /* release the previously allocated resource */
+ release_io_space(s, &c->io[0]);
+ /* but preserve the settings, for they worked... */
+ c->io[0].end = resource_size(&tmp);
+ c->io[0].start = tmp.start;
+ c->io[0].flags = tmp.flags;
+ goto out;
+ }
+ } else
+ c->io[1].start = 0;
+
c->state |= CONFIG_IO_REQ;
- p_dev->state |= CLIENT_IO_REQ;
- return CS_SUCCESS;
+ p_dev->_io = 1;
+
+ dev_dbg(&p_dev->dev, "pcmcia_request_io succeeded: %pR , %pR",
+ &c->io[0], &c->io[1]);
+out:
+ mutex_unlock(&s->ops_mutex);
+
+ return ret;
} /* pcmcia_request_io */
EXPORT_SYMBOL(pcmcia_request_io);
-/** pcmcia_request_irq
+/**
+ * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device
+ * @p_dev: the associated PCMCIA device
+ * @handler: IRQ handler to register
*
- * Request_irq() reserves an irq for this client.
+ * pcmcia_request_irq() is a wrapper around request_irq() which allows
+ * the PCMCIA core to clean up the registration in pcmcia_disable_device().
+ * Drivers are free to use request_irq() directly, but then they need to
+ * call free_irq() themselfves, too. Also, only %IRQF_SHARED capable IRQ
+ * handlers are allowed.
+ */
+int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
+ irq_handler_t handler)
+{
+ int ret;
+
+ if (!p_dev->irq)
+ return -EINVAL;
+
+ ret = request_irq(p_dev->irq, handler, IRQF_SHARED,
+ p_dev->devname, p_dev->priv);
+ if (!ret)
+ p_dev->_irq = 1;
+
+ return ret;
+}
+EXPORT_SYMBOL(pcmcia_request_irq);
+
+
+/**
+ * pcmcia_request_exclusive_irq() - attempt to request an exclusive IRQ first
+ * @p_dev: the associated PCMCIA device
+ * @handler: IRQ handler to register
*
- * 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.
+ * pcmcia_request_exclusive_irq() is a wrapper around request_irq() which
+ * attempts first to request an exclusive IRQ. If it fails, it also accepts
+ * a shared IRQ, but prints out a warning. PCMCIA drivers should allow for
+ * IRQ sharing and either use request_irq directly (then they need to call
+ * free_irq() themselves, too), or the pcmcia_request_irq() function.
*/
+int __must_check
+__pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
+ irq_handler_t handler)
+{
+ int ret;
+
+ if (!p_dev->irq)
+ return -EINVAL;
+
+ ret = request_irq(p_dev->irq, handler, 0, p_dev->devname, p_dev->priv);
+ if (ret) {
+ ret = pcmcia_request_irq(p_dev, handler);
+ dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
+ "request for exclusive IRQ could not be fulfilled.\n");
+ dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
+ "needs updating to supported shared IRQ lines.\n");
+ }
+ if (ret)
+ dev_printk(KERN_INFO, &p_dev->dev, "request_irq() failed\n");
+ else
+ p_dev->_irq = 1;
+
+ return ret;
+} /* pcmcia_request_exclusive_irq */
+EXPORT_SYMBOL(__pcmcia_request_exclusive_irq);
+
#ifdef CONFIG_PCMCIA_PROBE
-static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
+
+/* mask of IRQs already reserved by other cards, we should avoid using them */
+static u8 pcmcia_used_irq[32];
+
+static irqreturn_t test_action(int cpl, void *dev_id)
{
return IRQ_NONE;
}
-#endif
-int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
+/**
+ * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used
+ * @p_dev - the associated PCMCIA device
+ *
+ * locking note: must be called with ops_mutex locked.
+ */
+static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
{
struct pcmcia_socket *s = p_dev->socket;
- config_t *c;
- int ret = CS_IN_USE, irq = 0;
+ unsigned int try, irq;
+ u32 mask = s->irq_mask;
+ int ret = -ENODEV;
- if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
- c = CONFIG(p_dev);
- if (c->state & CONFIG_LOCKED)
- return CS_CONFIGURATION_LOCKED;
- if (c->state & CONFIG_IRQ_REQ)
- return CS_IN_USE;
+ for (try = 0; try < 64; try++) {
+ irq = try % 32;
-#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;
- }
+ if (irq > NR_IRQS)
+ continue;
+
+ /* marked as available by driver, not blocked by userspace? */
+ if (!((mask >> irq) & 1))
+ continue;
+
+ /* avoid an IRQ which is already used by another PCMCIA card */
+ if ((try < 32) && pcmcia_used_irq[irq])
+ continue;
+
+ /* register the correct driver, if possible, to 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, test_action, type, p_dev->devname,
+ p_dev);
+ if (!ret) {
+ free_irq(irq, p_dev);
+ p_dev->irq = s->pcmcia_irq = irq;
+ pcmcia_used_irq[irq]++;
+ 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;
+ return ret;
+}
+
+void pcmcia_cleanup_irq(struct pcmcia_socket *s)
+{
+ pcmcia_used_irq[s->pcmcia_irq]--;
+ s->pcmcia_irq = 0;
+}
+
+#else /* CONFIG_PCMCIA_PROBE */
+
+static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
+{
+ return -EINVAL;
+}
+
+void pcmcia_cleanup_irq(struct pcmcia_socket *s)
+{
+ s->pcmcia_irq = 0;
+ return;
+}
+
+#endif /* CONFIG_PCMCIA_PROBE */
+
+
+/**
+ * pcmcia_setup_irq() - determine IRQ to be used for device
+ * @p_dev - the associated PCMCIA device
+ *
+ * locking note: must be called with ops_mutex locked.
+ */
+int pcmcia_setup_irq(struct pcmcia_device *p_dev)
+{
+ struct pcmcia_socket *s = p_dev->socket;
+
+ if (p_dev->irq)
+ return 0;
+
+ /* already assigned? */
+ if (s->pcmcia_irq) {
+ p_dev->irq = s->pcmcia_irq;
+ return 0;
}
- c->irq.Attributes = req->Attributes;
- s->irq.AssignedIRQ = req->AssignedIRQ = irq;
- s->irq.Config++;
+ /* prefer an exclusive ISA irq */
+ if (!pcmcia_setup_isa_irq(p_dev, 0))
+ return 0;
- c->state |= CONFIG_IRQ_REQ;
- p_dev->state |= CLIENT_IRQ_REQ;
+ /* but accept a shared ISA irq */
+ if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED))
+ return 0;
-#ifdef CONFIG_PCMCIA_PROBE
- pcmcia_used_irq[irq]++;
-#endif
+ /* but use the PCI irq otherwise */
+ if (s->pci_irq) {
+ p_dev->irq = s->pcmcia_irq = s->pci_irq;
+ return 0;
+ }
- return CS_SUCCESS;
-} /* pcmcia_request_irq */
-EXPORT_SYMBOL(pcmcia_request_irq);
+ return -EINVAL;
+}
-/** pcmcia_request_window
+/**
+ * pcmcia_request_window() - attempt to reserve iomem for PCMCIA devices
+ * @p_dev: the associated PCMCIA device
+ * @res: &struct resource pointing to p_dev->resource[2..5]
+ * @speed: access speed
*
- * Request_window() establishes a mapping between card memory space
- * and system memory space.
+ * pcmcia_request_window() attepts to reserve an iomem ranges specified in
+ * &struct resource @res pointing to one of the entries in
+ * &struct pcmcia_device @p_dev->resource[2..5]. The "start" value is the
+ * requested start of the IO mem resource; "end" reflects the size
+ * requested.
*/
-int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
+int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res,
+ unsigned int speed)
{
- struct pcmcia_socket *s = (*p_dev)->socket;
- window_t *win;
+ struct pcmcia_socket *s = p_dev->socket;
+ pccard_mem_map *win;
u_long align;
int w;
- if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
- if (req->Attributes & (WIN_PAGED | WIN_SHARED))
- return CS_BAD_ATTRIBUTE;
+ dev_dbg(&p_dev->dev, "request_window %pR %d\n", res, speed);
+
+ if (!(s->state & SOCKET_PRESENT)) {
+ dev_dbg(&p_dev->dev, "No card present\n");
+ return -ENODEV;
+ }
/* 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)
+ if (res->end == 0)
+ res->end = s->map_size;
+ align = (s->features & SS_CAP_MEM_ALIGN) ? res->end : s->map_size;
+ if (res->end & (s->map_size-1)) {
+ dev_dbg(&p_dev->dev, "invalid map size\n");
+ return -EINVAL;
+ }
+ if ((res->start && (s->features & SS_CAP_STATIC_MAP)) ||
+ (res->start & (align-1))) {
+ dev_dbg(&p_dev->dev, "invalid base address\n");
+ return -EINVAL;
+ }
+ if (res->start)
align = 0;
/* Allocate system memory window */
+ mutex_lock(&s->ops_mutex);
for (w = 0; w < MAX_WIN; w++)
- if (!(s->state & SOCKET_WIN_REQ(w))) break;
- if (w == MAX_WIN)
- return CS_OUT_OF_RESOURCE;
+ if (!(s->state & SOCKET_WIN_REQ(w)))
+ break;
+ if (w == MAX_WIN) {
+ dev_dbg(&p_dev->dev, "all windows are used already\n");
+ mutex_unlock(&s->ops_mutex);
+ return -EINVAL;
+ }
win = &s->win[w];
- win->magic = WINDOW_MAGIC;
- win->index = w;
- win->handle = *p_dev;
- 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;
+ win->res = pcmcia_find_mem_region(res->start, res->end, align,
+ 0, s);
+ if (!win->res) {
+ dev_dbg(&p_dev->dev, "allocating mem region failed\n");
+ mutex_unlock(&s->ops_mutex);
+ return -EINVAL;
+ }
}
- (*p_dev)->state |= CLIENT_WIN_REQ(w);
+ p_dev->_win |= 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;
+ win->map = w+1;
+ win->flags = res->flags & WIN_FLAGS_MAP;
+ win->speed = speed;
+ win->card_start = 0;
+
+ if (s->ops->set_mem_map(s, win) != 0) {
+ dev_dbg(&p_dev->dev, "failed to set memory mapping\n");
+ mutex_unlock(&s->ops_mutex);
+ return -EIO;
+ }
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;
+ if (s->features & SS_CAP_STATIC_MAP)
+ res->start = win->static_start;
+ else
+ res->start = win->res->start;
- return CS_SUCCESS;
+ /* convert to new-style resources */
+ res->end += res->start - 1;
+ res->flags &= ~WIN_FLAGS_REQ;
+ res->flags |= (win->map << 2) | IORESOURCE_MEM;
+ res->parent = win->res;
+ if (win->res)
+ request_resource(&iomem_resource, res);
+
+ dev_dbg(&p_dev->dev, "request_window results in %pR\n", res);
+
+ mutex_unlock(&s->ops_mutex);
+
+ return 0;
} /* pcmcia_request_window */
EXPORT_SYMBOL(pcmcia_request_window);
+
+
+/**
+ * pcmcia_disable_device() - disable and clean up a PCMCIA device
+ * @p_dev: the associated PCMCIA device
+ *
+ * pcmcia_disable_device() is the driver-callable counterpart to
+ * pcmcia_enable_device(): If a PCMCIA device is no longer used,
+ * drivers are expected to clean up and disable the device by calling
+ * this function. Any I/O ranges (iomem and ioports) will be released,
+ * the Vpp voltage will be set to 0, and IRQs will no longer be
+ * generated -- at least if there is no other card function (of
+ * multifunction devices) being used.
+ */
+void pcmcia_disable_device(struct pcmcia_device *p_dev)
+{
+ int i;
+
+ dev_dbg(&p_dev->dev, "disabling device\n");
+
+ for (i = 0; i < MAX_WIN; i++) {
+ struct resource *res = p_dev->resource[MAX_IO_WIN + i];
+ if (res->flags & WIN_FLAGS_REQ)
+ pcmcia_release_window(p_dev, res);
+ }
+
+ pcmcia_release_configuration(p_dev);
+ pcmcia_release_io(p_dev);
+ if (p_dev->_irq) {
+ free_irq(p_dev->irq, p_dev->priv);
+ p_dev->_irq = 0;
+ }
+}
+EXPORT_SYMBOL(pcmcia_disable_device);
Code Review / linux-2.6.git / blobdiff