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path: root/drivers/pcmcia/pcmcia_resource.c
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Diffstat (limited to 'drivers/pcmcia/pcmcia_resource.c')
-rw-r--r--drivers/pcmcia/pcmcia_resource.c381
1 files changed, 214 insertions, 167 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 4884a18cf9e..afea2b2558b 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -29,7 +29,6 @@
#include <pcmcia/ds.h>
#include "cs_internal.h"
-#include "ds_internal.h"
/* Access speed for IO windows */
@@ -44,16 +43,17 @@ static u8 pcmcia_used_irq[NR_IRQS];
#endif
-#ifdef DEBUG
+#ifdef CONFIG_PCMCIA_DEBUG
extern int ds_pc_debug;
#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); \
+ dev_printk(KERN_DEBUG, &skt->dev, \
+ "pcmcia_resource: " fmt, \
+ ## arg); \
} while (0)
#else
-#define ds_dbg(lvl, fmt, arg...) do { } while (0)
+#define ds_dbg(skt, lvl, fmt, arg...) do { } while (0)
#endif
@@ -168,13 +168,13 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
u_char val;
if (!p_dev || !p_dev->function_config)
- return CS_NO_CARD;
+ return -EINVAL;
s = p_dev->socket;
c = p_dev->function_config;
if (!(c->state & CONFIG_LOCKED))
- return CS_CONFIGURATION_LOCKED;
+ return -EACCES;
addr = (c->ConfigBase + reg->Offset) >> 1;
@@ -188,93 +188,14 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
pcmcia_write_cis_mem(s, 1, addr, 1, &val);
break;
default:
- return CS_BAD_ARGS;
+ return -EINVAL;
break;
}
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_access_configuration_register */
EXPORT_SYMBOL(pcmcia_access_configuration_register);
-int pccard_get_configuration_info(struct pcmcia_socket *s,
- struct pcmcia_device *p_dev,
- config_info_t *config)
-{
- config_t *c;
-
- if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
-
-
-#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;
- if (s->io[0].res) {
- config->BasePort1 = s->io[0].res->start;
- config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
- }
- }
- return CS_SUCCESS;
- }
-#endif
-
- if (p_dev) {
- c = p_dev->function_config;
- config->Function = p_dev->func;
- } else {
- c = NULL;
- config->Function = 0;
- }
-
- 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;
- }
-
- config->Attributes = c->Attributes | CONF_VALID_CLIENT;
- config->Vcc = s->socket.Vcc;
- config->Vpp1 = config->Vpp2 = s->socket.Vpp;
- config->IntType = c->IntType;
- config->ConfigBase = c->ConfigBase;
- config->Status = c->Status;
- config->Pin = c->Pin;
- config->Copy = c->Copy;
- config->Option = c->Option;
- config->ExtStatus = c->ExtStatus;
- config->Present = 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)
-{
- return pccard_get_configuration_info(p_dev->socket, p_dev,
- config);
-}
-EXPORT_SYMBOL(pcmcia_get_configuration_info);
-
-
/** pcmcia_get_window
*/
int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
@@ -284,12 +205,12 @@ int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
int w;
if (!s || !(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
+ return -ENODEV;
for (w = idx; w < MAX_WIN; w++)
if (s->state & SOCKET_WIN_REQ(w))
break;
if (w == MAX_WIN)
- return CS_NO_MORE_ITEMS;
+ return -EINVAL;
win = &s->win[w];
req->Base = win->ctl.res->start;
req->Size = win->ctl.res->end - win->ctl.res->start + 1;
@@ -304,7 +225,7 @@ int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
if (win->ctl.flags & MAP_USE_WAIT)
req->Attributes |= WIN_USE_WAIT;
*handle = win;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_get_window */
EXPORT_SYMBOL(pcmcia_get_window);
@@ -316,10 +237,10 @@ EXPORT_SYMBOL(pcmcia_get_window);
int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
{
if ((win == NULL) || (win->magic != WINDOW_MAGIC))
- return CS_BAD_HANDLE;
+ return -EINVAL;
req->Page = 0;
req->CardOffset = win->ctl.card_start;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_get_mem_page */
EXPORT_SYMBOL(pcmcia_get_mem_page);
@@ -328,14 +249,18 @@ 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;
+ return -EINVAL;
s = win->sock;
+ if (req->Page != 0) {
+ ds_dbg(s, 0, "failure: requested page is zero\n");
+ return -EINVAL;
+ }
win->ctl.card_start = req->CardOffset;
- if (s->ops->set_mem_map(s, &win->ctl) != 0)
- return CS_BAD_OFFSET;
- return CS_SUCCESS;
+ if (s->ops->set_mem_map(s, &win->ctl) != 0) {
+ ds_dbg(s, 0, "failed to set_mem_map\n");
+ return -EIO;
+ }
+ return 0;
} /* pcmcia_map_mem_page */
EXPORT_SYMBOL(pcmcia_map_mem_page);
@@ -354,9 +279,9 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
c = p_dev->function_config;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
+ return -ENODEV;
if (!(c->state & CONFIG_LOCKED))
- return CS_CONFIGURATION_LOCKED;
+ return -EACCES;
if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
if (mod->Attributes & CONF_ENABLE_IRQ) {
@@ -369,20 +294,28 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
s->ops->set_socket(s, &s->socket);
}
- if (mod->Attributes & CONF_VCC_CHANGE_VALID)
- return CS_BAD_VCC;
+ if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
+ ds_dbg(s, 0, "changing Vcc is not allowed at this time\n");
+ return -EINVAL;
+ }
/* 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;
+ ds_dbg(s, 0, "Vpp1 and Vpp2 must be the same\n");
+ return -EINVAL;
s->socket.Vpp = mod->Vpp1;
- if (s->ops->set_socket(s, &s->socket))
- return CS_BAD_VPP;
+ if (s->ops->set_socket(s, &s->socket)) {
+ dev_printk(KERN_WARNING, &s->dev,
+ "Unable to set VPP\n");
+ return -EIO;
+ }
} else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
- (mod->Attributes & CONF_VPP2_CHANGE_VALID))
- return CS_BAD_VPP;
+ (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
+ ds_dbg(s, 0, "changing Vcc is not allowed at this time\n");
+ return -EINVAL;
+ }
if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
pccard_io_map io_off = { 0, 0, 0, 0, 1 };
@@ -406,7 +339,7 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
}
}
- return CS_SUCCESS;
+ return 0;
} /* modify_configuration */
EXPORT_SYMBOL(pcmcia_modify_configuration);
@@ -441,7 +374,7 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev)
}
}
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_release_configuration */
@@ -459,7 +392,7 @@ static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
config_t *c = p_dev->function_config;
if (!p_dev->_io )
- return CS_BAD_HANDLE;
+ return -EINVAL;
p_dev->_io = 0;
@@ -467,7 +400,7 @@ static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
(c->io.NumPorts1 != req->NumPorts1) ||
(c->io.BasePort2 != req->BasePort2) ||
(c->io.NumPorts2 != req->NumPorts2))
- return CS_BAD_ARGS;
+ return -EINVAL;
c->state &= ~CONFIG_IO_REQ;
@@ -475,7 +408,7 @@ static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
if (req->NumPorts2)
release_io_space(s, req->BasePort2, req->NumPorts2);
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_release_io */
@@ -485,15 +418,19 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
config_t *c= p_dev->function_config;
if (!p_dev->_irq)
- return CS_BAD_HANDLE;
+ return -EINVAL;
p_dev->_irq = 0;
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;
+ return -EACCES;
+ if (c->irq.Attributes != req->Attributes) {
+ ds_dbg(s, 0, "IRQ attributes must match assigned ones\n");
+ return -EINVAL;
+ }
+ if (s->irq.AssignedIRQ != req->AssignedIRQ) {
+ ds_dbg(s, 0, "IRQ must match assigned one\n");
+ return -EINVAL;
+ }
if (--s->irq.Config == 0) {
c->state &= ~CONFIG_IRQ_REQ;
s->irq.AssignedIRQ = 0;
@@ -507,7 +444,7 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
pcmcia_used_irq[req->AssignedIRQ]--;
#endif
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_release_irq */
@@ -516,10 +453,10 @@ int pcmcia_release_window(window_handle_t win)
struct pcmcia_socket *s;
if ((win == NULL) || (win->magic != WINDOW_MAGIC))
- return CS_BAD_HANDLE;
+ return -EINVAL;
s = win->sock;
if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
- return CS_BAD_HANDLE;
+ return -EINVAL;
/* Shut down memory window */
win->ctl.flags &= ~MAP_ACTIVE;
@@ -536,7 +473,7 @@ int pcmcia_release_window(window_handle_t win)
win->magic = 0;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_release_window */
EXPORT_SYMBOL(pcmcia_release_window);
@@ -551,18 +488,23 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev,
pccard_io_map iomap;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
+ return -ENODEV;;
- if (req->IntType & INT_CARDBUS)
- return CS_UNSUPPORTED_MODE;
+ if (req->IntType & INT_CARDBUS) {
+ ds_dbg(p_dev->socket, 0, "IntType may not be INT_CARDBUS\n");
+ return -EINVAL;
+ }
c = p_dev->function_config;
if (c->state & CONFIG_LOCKED)
- return CS_CONFIGURATION_LOCKED;
+ return -EACCES;
/* Do power control. We don't allow changes in Vcc. */
s->socket.Vpp = req->Vpp;
- if (s->ops->set_socket(s, &s->socket))
- return CS_BAD_VPP;
+ if (s->ops->set_socket(s, &s->socket)) {
+ dev_printk(KERN_WARNING, &s->dev,
+ "Unable to set socket state\n");
+ return -EINVAL;
+ }
/* Pick memory or I/O card, DMA mode, interrupt */
c->IntType = req->IntType;
@@ -651,7 +593,7 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev,
c->state |= CONFIG_LOCKED;
p_dev->_locked = 1;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_request_configuration */
EXPORT_SYMBOL(pcmcia_request_configuration);
@@ -667,37 +609,48 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
config_t *c;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
+ return -ENODEV;
if (!req)
- return CS_UNSUPPORTED_MODE;
+ return -EINVAL;
c = p_dev->function_config;
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;
+ return -EACCES;
+ if (c->state & CONFIG_IO_REQ) {
+ ds_dbg(s, 0, "IO already configured\n");
+ return -EBUSY;
+ }
+ if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
+ ds_dbg(s, 0, "bad attribute setting for IO region 1\n");
+ return -EINVAL;
+ }
if ((req->NumPorts2 > 0) &&
- (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
- return CS_BAD_ATTRIBUTE;
+ (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
+ ds_dbg(s, 0, "bad attribute setting for IO region 2\n");
+ return -EINVAL;
+ }
+ ds_dbg(s, 1, "trying to allocate resource 1\n");
if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
- req->NumPorts1, req->IOAddrLines))
- return CS_IN_USE;
+ req->NumPorts1, req->IOAddrLines)) {
+ ds_dbg(s, 0, "allocation of resource 1 failed\n");
+ return -EBUSY;
+ }
if (req->NumPorts2) {
+ ds_dbg(s, 1, "trying to allocate resource 2\n");
if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
req->NumPorts2, req->IOAddrLines)) {
+ ds_dbg(s, 0, "allocation of resource 2 failed\n");
release_io_space(s, req->BasePort1, req->NumPorts1);
- return CS_IN_USE;
+ return -EBUSY;
}
}
c->io = *req;
c->state |= CONFIG_IO_REQ;
p_dev->_io = 1;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_request_io */
EXPORT_SYMBOL(pcmcia_request_io);
@@ -723,16 +676,18 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
{
struct pcmcia_socket *s = p_dev->socket;
config_t *c;
- int ret = CS_IN_USE, irq = 0;
+ int ret = -EINVAL, irq = 0;
int type;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
+ return -ENODEV;
c = p_dev->function_config;
if (c->state & CONFIG_LOCKED)
- return CS_CONFIGURATION_LOCKED;
- if (c->state & CONFIG_IRQ_REQ)
- return CS_IN_USE;
+ return -EACCES;
+ if (c->state & CONFIG_IRQ_REQ) {
+ ds_dbg(s, 0, "IRQ already configured\n");
+ return -EBUSY;
+ }
/* Decide what type of interrupt we are registering */
type = 0;
@@ -795,15 +750,19 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
}
if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
- if (request_irq(irq, req->Handler, type, p_dev->devname, req->Instance))
- return CS_IN_USE;
+ ret = request_irq(irq, req->Handler, type,
+ p_dev->devname, req->Instance);
+ if (ret)
+ return ret;
}
/* Make sure the fact the request type was overridden is passed back */
if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
- printk(KERN_WARNING "pcmcia: request for exclusive IRQ could not be fulfilled.\n");
- printk(KERN_WARNING "pcmcia: the driver needs updating to supported shared IRQ lines.\n");
+ 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");
}
c->irq.Attributes = req->Attributes;
s->irq.AssignedIRQ = req->AssignedIRQ = irq;
@@ -816,7 +775,7 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
pcmcia_used_irq[irq]++;
#endif
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_request_irq */
EXPORT_SYMBOL(pcmcia_request_irq);
@@ -834,9 +793,11 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
int w;
if (!(s->state & SOCKET_PRESENT))
- return CS_NO_CARD;
- if (req->Attributes & (WIN_PAGED | WIN_SHARED))
- return CS_BAD_ATTRIBUTE;
+ return -ENODEV;
+ if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
+ ds_dbg(s, 0, "bad attribute setting for iomem region\n");
+ return -EINVAL;
+ }
/* Window size defaults to smallest available */
if (req->Size == 0)
@@ -844,19 +805,25 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
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->Size & (s->map_size-1)) {
+ ds_dbg(s, 0, "invalid map size\n");
+ return -EINVAL;
+ }
if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
- (req->Base & (align-1)))
- return CS_BAD_BASE;
+ (req->Base & (align-1))) {
+ ds_dbg(s, 0, "invalid base address\n");
+ return -EINVAL;
+ }
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;
+ if (w == MAX_WIN) {
+ ds_dbg(s, 0, "all windows are used already\n");
+ return -EINVAL;
+ }
win = &s->win[w];
win->magic = WINDOW_MAGIC;
@@ -867,8 +834,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
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;
+ if (!win->ctl.res) {
+ ds_dbg(s, 0, "allocating mem region failed\n");
+ return -EINVAL;
+ }
}
(*p_dev)->_win |= CLIENT_WIN_REQ(w);
@@ -885,8 +854,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
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;
+ if (s->ops->set_mem_map(s, &win->ctl) != 0) {
+ ds_dbg(s, 0, "failed to set memory mapping\n");
+ return -EIO;
+ }
s->state |= SOCKET_WIN_REQ(w);
/* Return window handle */
@@ -897,7 +868,7 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
}
*wh = win;
- return CS_SUCCESS;
+ return 0;
} /* pcmcia_request_window */
EXPORT_SYMBOL(pcmcia_request_window);
@@ -909,3 +880,79 @@ void pcmcia_disable_device(struct pcmcia_device *p_dev) {
pcmcia_release_window(p_dev->win);
}
EXPORT_SYMBOL(pcmcia_disable_device);
+
+
+struct pcmcia_cfg_mem {
+ tuple_t tuple;
+ cisparse_t parse;
+ u8 buf[256];
+ cistpl_cftable_entry_t dflt;
+};
+
+/**
+ * pcmcia_loop_config() - loop over configuration options
+ * @p_dev: the struct pcmcia_device which we need to loop for.
+ * @conf_check: function to call for each configuration option.
+ * It gets passed the struct pcmcia_device, the CIS data
+ * describing the configuration option, and private data
+ * being passed to pcmcia_loop_config()
+ * @priv_data: private data to be passed to the conf_check function.
+ *
+ * pcmcia_loop_config() loops over all configuration options, and calls
+ * the driver-specific conf_check() for each one, checking whether
+ * it is a valid one.
+ */
+int pcmcia_loop_config(struct pcmcia_device *p_dev,
+ int (*conf_check) (struct pcmcia_device *p_dev,
+ cistpl_cftable_entry_t *cfg,
+ cistpl_cftable_entry_t *dflt,
+ unsigned int vcc,
+ void *priv_data),
+ void *priv_data)
+{
+ struct pcmcia_cfg_mem *cfg_mem;
+
+ tuple_t *tuple;
+ int ret = -ENODEV;
+ unsigned int vcc;
+
+ cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
+ if (cfg_mem == NULL)
+ return -ENOMEM;
+
+ /* get the current Vcc setting */
+ vcc = p_dev->socket->socket.Vcc;
+
+ tuple = &cfg_mem->tuple;
+ tuple->TupleData = cfg_mem->buf;
+ tuple->TupleDataMax = 255;
+ tuple->TupleOffset = 0;
+ tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ tuple->Attributes = 0;
+
+ ret = pcmcia_get_first_tuple(p_dev, tuple);
+ while (!ret) {
+ cistpl_cftable_entry_t *cfg = &cfg_mem->parse.cftable_entry;
+
+ if (pcmcia_get_tuple_data(p_dev, tuple))
+ goto next_entry;
+
+ if (pcmcia_parse_tuple(tuple, &cfg_mem->parse))
+ goto next_entry;
+
+ /* default values */
+ p_dev->conf.ConfigIndex = cfg->index;
+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+ cfg_mem->dflt = *cfg;
+
+ ret = conf_check(p_dev, cfg, &cfg_mem->dflt, vcc, priv_data);
+ if (!ret)
+ break;
+
+next_entry:
+ ret = pcmcia_get_next_tuple(p_dev, tuple);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(pcmcia_loop_config);