#include <linux/netdevice.h>
#include <linux/slab.h>
+#include <asm/irq.h>
+
#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
module_param(io_speed, int, 0444);
-#ifdef CONFIG_PCMCIA_PROBE
-#include <asm/irq.h>
-/* mask of IRQs already reserved by other cards, we should avoid using them */
-static u8 pcmcia_used_irq[NR_IRQS];
-#endif
-
-static int pcmcia_adjust_io_region(struct resource *res, unsigned long start,
- unsigned long end, struct pcmcia_socket *s)
-{
- if (s->resource_ops->adjust_io_region)
- return s->resource_ops->adjust_io_region(res, start, end, s);
- return -ENOMEM;
-}
-
-static struct resource *pcmcia_find_io_region(unsigned long base, int num,
- unsigned long align,
- struct pcmcia_socket *s)
-{
- if (s->resource_ops->find_io)
- return s->resource_ops->find_io(base, num, align, s);
- return NULL;
-}
-
int pcmcia_validate_mem(struct pcmcia_socket *s)
{
if (s->resource_ops->validate_mem)
static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
unsigned int *base, unsigned int num, u_int lines)
{
- int i;
- unsigned int try, align;
+ unsigned int align;
align = (*base) ? (lines ? 1<<lines : 0) : 1;
if (align && (align < num)) {
*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].res) && *base &&
- ((s->io[i].res->start & (align-1)) == *base))
- return 1;
- for (i = 0; i < MAX_IO_WIN; i++) {
- if (!s->io[i].res) {
- s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
- if (s->io[i].res) {
- *base = s->io[i].res->start;
- s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
- s->io[i].InUse = num;
- break;
- } else
- return 1;
- } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
- continue;
- /* Try to extend top of window */
- try = s->io[i].res->end + 1;
- 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].InUse += num;
- break;
- }
- /* Try to extend bottom of window */
- try = s->io[i].res->start - 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) {
- *base = try;
- s->io[i].InUse += num;
- break;
- }
- }
- return (i == MAX_IO_WIN);
+
+ return s->resource_ops->find_io(s, attr, base, num, align);
} /* alloc_io_space */
config_t *c;
int addr;
u_char val;
+ int ret = 0;
if (!p_dev || !p_dev->function_config)
return -EINVAL;
}
addr = (c->ConfigBase + reg->Offset) >> 1;
- mutex_unlock(&s->ops_mutex);
switch (reg->Action) {
case CS_READ:
- pcmcia_read_cis_mem(s, 1, addr, 1, &val);
+ ret = pcmcia_read_cis_mem(s, 1, addr, 1, &val);
reg->Value = val;
break;
case CS_WRITE:
break;
default:
dev_dbg(&s->dev, "Invalid conf register request\n");
- return -EINVAL;
+ ret = -EINVAL;
break;
}
- return 0;
+ mutex_unlock(&s->ops_mutex);
+ return ret;
} /* pcmcia_access_configuration_register */
EXPORT_SYMBOL(pcmcia_access_configuration_register);
goto unlock;
}
- 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) {
- dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
+ if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) {
+ dev_dbg(&s->dev,
+ "changing Vcc or IRQ is not allowed at this time\n");
ret = -EINVAL;
goto unlock;
}
} /* pcmcia_release_io */
-static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
-{
- struct pcmcia_socket *s = p_dev->socket;
- config_t *c;
- int ret = -EINVAL;
-
- mutex_lock(&s->ops_mutex);
-
- c = p_dev->function_config;
-
- if (!p_dev->_irq)
- goto out;
-
- p_dev->_irq = 0;
-
- if (c->state & CONFIG_LOCKED)
- goto out;
-
- if (c->irq.Attributes != req->Attributes) {
- dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
- goto out;
- }
- if (s->irq.AssignedIRQ != req->AssignedIRQ) {
- dev_dbg(&s->dev, "IRQ must match assigned one\n");
- goto out;
- }
- if (--s->irq.Config == 0) {
- c->state &= ~CONFIG_IRQ_REQ;
- s->irq.AssignedIRQ = 0;
- }
-
- if (req->Handler)
- free_irq(req->AssignedIRQ, p_dev->priv);
-
-#ifdef CONFIG_PCMCIA_PROBE
- pcmcia_used_irq[req->AssignedIRQ]--;
-#endif
- ret = 0;
-
-out:
- mutex_unlock(&s->ops_mutex);
-
- return ret;
-} /* pcmcia_release_irq */
-
-
int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
{
struct pcmcia_socket *s = p_dev->socket;
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;
+ s->socket.io_irq = s->pcmcia_irq;
else
s->socket.io_irq = 0;
s->ops->set_socket(s, &s->socket);
s->lock_count++;
- mutex_unlock(&s->ops_mutex);
/* Set up CIS configuration registers */
base = c->ConfigBase = req->ConfigBase;
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;
+ if ((req->Attributes & CONF_ENABLE_IRQ) &&
+ !(req->Attributes & CONF_ENABLE_PULSE_IRQ))
+ c->Option |= COR_LEVEL_REQ;
pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
mdelay(40);
}
/* Configure I/O windows */
if (c->state & CONFIG_IO_REQ) {
- mutex_lock(&s->ops_mutex);
iomap.speed = io_speed;
for (i = 0; i < MAX_IO_WIN; i++)
if (s->io[i].res) {
s->ops->set_io_map(s, &iomap);
s->io[i].Config++;
}
- mutex_unlock(&s->ops_mutex);
}
c->state |= CONFIG_LOCKED;
p_dev->_locked = 1;
+ mutex_unlock(&s->ops_mutex);
return 0;
} /* pcmcia_request_configuration */
EXPORT_SYMBOL(pcmcia_request_configuration);
EXPORT_SYMBOL(pcmcia_request_io);
-/** pcmcia_request_irq
+/**
+ * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device
*
- * Request_irq() reserves an irq for this client.
+ * pcmcia_request_irq() is a wrapper around request_irq which will allow
+ * 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
*
- * 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
+
+/* mask of IRQs already reserved by other cards, we should avoid using them */
+static u8 pcmcia_used_irq[NR_IRQS];
+
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 = -EINVAL, irq = 0;
- int type;
+ unsigned int try, irq;
+ u32 mask = s->irq_mask;
+ int ret = -ENODEV;
- mutex_lock(&s->ops_mutex);
+ for (try = 0; try < 64; try++) {
+ irq = try % 32;
- if (!(s->state & SOCKET_PRESENT)) {
- dev_dbg(&s->dev, "No card present\n");
- goto out;
- }
- c = p_dev->function_config;
- if (c->state & CONFIG_LOCKED) {
- dev_dbg(&s->dev, "Configuration is locked\n");
- goto out;
- }
- if (c->state & CONFIG_IRQ_REQ) {
- dev_dbg(&s->dev, "IRQ already configured\n");
- goto out;
+ /* 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;
+ }
}
- /* Decide what type of interrupt we are registering */
- type = 0;
- if (s->functions > 1) /* All of this ought to be handled higher up */
- type = IRQF_SHARED;
- else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
- type = IRQF_SHARED;
- else
- printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
+ return ret;
+}
- /* If the interrupt is already assigned, it must be the same */
- if (s->irq.AssignedIRQ != 0)
- irq = s->irq.AssignedIRQ;
+void pcmcia_cleanup_irq(struct pcmcia_socket *s)
+{
+ pcmcia_used_irq[s->pcmcia_irq]--;
+ s->pcmcia_irq = 0;
+}
-#ifdef CONFIG_PCMCIA_PROBE
- if (!irq) {
- int try;
- u32 mask = s->irq_mask;
- void *data = p_dev; /* something unique to this device */
+#else /* CONFIG_PCMCIA_PROBE */
- for (try = 0; try < 64; try++) {
- irq = try % 32;
+static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
+{
+ return -EINVAL;
+}
- /* marked as available by driver, and not blocked by userspace? */
- if (!((mask >> irq) & 1))
- continue;
+void pcmcia_cleanup_irq(struct pcmcia_socket *s)
+{
+ s->pcmcia_irq = 0;
+ return;
+}
- /* avoid an IRQ which is already used by a PCMCIA card */
- if ((try < 32) && pcmcia_used_irq[irq])
- continue;
+#endif /* CONFIG_PCMCIA_PROBE */
- /* 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->Handler) ? req->Handler : test_action,
- type,
- p_dev->devname,
- (req->Handler) ? p_dev->priv : data);
- if (!ret) {
- if (!req->Handler)
- free_irq(irq, data);
- break;
- }
- }
- }
-#endif
- /* only assign PCI irq if no IRQ already assigned */
- if (ret && !s->irq.AssignedIRQ) {
- if (!s->pci_irq) {
- dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
- goto out;
- }
- type = IRQF_SHARED;
- irq = s->pci_irq;
- }
- if (ret && req->Handler) {
- ret = request_irq(irq, req->Handler, type,
- p_dev->devname, p_dev->priv);
- if (ret) {
- dev_printk(KERN_INFO, &s->dev,
- "request_irq() failed\n");
- goto out;
- }
- }
+/**
+ * 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;
- /* 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;
- 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 (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++;
- c->state |= CONFIG_IRQ_REQ;
- p_dev->_irq = 1;
+ /* prefer an exclusive ISA irq */
+ if (!pcmcia_setup_isa_irq(p_dev, 0))
+ return 0;
-#ifdef CONFIG_PCMCIA_PROBE
- pcmcia_used_irq[irq]++;
-#endif
+ /* but accept a shared ISA irq */
+ if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED))
+ return 0;
- ret = 0;
-out:
- mutex_unlock(&s->ops_mutex);
- return ret;
-} /* pcmcia_request_irq */
-EXPORT_SYMBOL(pcmcia_request_irq);
+ /* but use the PCI irq otherwise */
+ if (s->pci_irq) {
+ p_dev->irq = s->pcmcia_irq = s->pci_irq;
+ return 0;
+ }
+
+ return -EINVAL;
+}
/** pcmcia_request_window
{
pcmcia_release_configuration(p_dev);
pcmcia_release_io(p_dev, &p_dev->io);
- pcmcia_release_irq(p_dev, &p_dev->irq);
+ if (p_dev->_irq) {
+ free_irq(p_dev->irq, p_dev->priv);
+ p_dev->_irq = 0;
+ }
if (p_dev->win)
pcmcia_release_window(p_dev, p_dev->win);
}
EXPORT_SYMBOL(pcmcia_disable_device);
-
-
-struct pcmcia_cfg_mem {
- struct pcmcia_device *p_dev;
- void *priv_data;
- int (*conf_check) (struct pcmcia_device *p_dev,
- cistpl_cftable_entry_t *cfg,
- cistpl_cftable_entry_t *dflt,
- unsigned int vcc,
- void *priv_data);
- cisparse_t parse;
- cistpl_cftable_entry_t dflt;
-};
-
-/**
- * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
- *
- * pcmcia_do_loop_config() is the internal callback for the call from
- * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
- * by a struct pcmcia_cfg_mem.
- */
-static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
-{
- cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
- struct pcmcia_cfg_mem *cfg_mem = priv;
-
- /* default values */
- cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
- if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
- cfg_mem->dflt = *cfg;
-
- return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
- cfg_mem->p_dev->socket->socket.Vcc,
- cfg_mem->priv_data);
-}
-
-/**
- * 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. Returns 0 on success or errorcode otherwise.
- */
-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;
- int ret;
-
- cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
- if (cfg_mem == NULL)
- return -ENOMEM;
-
- cfg_mem->p_dev = p_dev;
- cfg_mem->conf_check = conf_check;
- cfg_mem->priv_data = priv_data;
-
- ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
- CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
- cfg_mem, pcmcia_do_loop_config);
-
- kfree(cfg_mem);
- return ret;
-}
-EXPORT_SYMBOL(pcmcia_loop_config);
-
-
-struct pcmcia_loop_mem {
- struct pcmcia_device *p_dev;
- void *priv_data;
- int (*loop_tuple) (struct pcmcia_device *p_dev,
- tuple_t *tuple,
- void *priv_data);
-};
-
-/**
- * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
- *
- * pcmcia_do_loop_tuple() is the internal callback for the call from
- * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
- * by a struct pcmcia_cfg_mem.
- */
-static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
-{
- struct pcmcia_loop_mem *loop = priv;
-
- return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
-};
-
-/**
- * pcmcia_loop_tuple() - loop over tuples in the CIS
- * @p_dev: the struct pcmcia_device which we need to loop for.
- * @code: which CIS code shall we look for?
- * @priv_data: private data to be passed to the loop_tuple function.
- * @loop_tuple: function to call for each CIS entry of type @function. IT
- * gets passed the raw tuple and @priv_data.
- *
- * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
- * calls the @loop_tuple function for each entry. If the call to @loop_tuple
- * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
- */
-int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
- int (*loop_tuple) (struct pcmcia_device *p_dev,
- tuple_t *tuple,
- void *priv_data),
- void *priv_data)
-{
- struct pcmcia_loop_mem loop = {
- .p_dev = p_dev,
- .loop_tuple = loop_tuple,
- .priv_data = priv_data};
-
- return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
- &loop, pcmcia_do_loop_tuple);
-}
-EXPORT_SYMBOL(pcmcia_loop_tuple);
-
-
-struct pcmcia_loop_get {
- size_t len;
- cisdata_t **buf;
-};
-
-/**
- * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
- *
- * pcmcia_do_get_tuple() is the internal callback for the call from
- * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
- * the first tuple, return 0 unconditionally. Create a memory buffer large
- * enough to hold the content of the tuple, and fill it with the tuple data.
- * The caller is responsible to free the buffer.
- */
-static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
- void *priv)
-{
- struct pcmcia_loop_get *get = priv;
-
- *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
- if (*get->buf) {
- get->len = tuple->TupleDataLen;
- memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
- } else
- dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
- return 0;
-}
-
-/**
- * pcmcia_get_tuple() - get first tuple from CIS
- * @p_dev: the struct pcmcia_device which we need to loop for.
- * @code: which CIS code shall we look for?
- * @buf: pointer to store the buffer to.
- *
- * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
- * It returns the buffer length (or zero). The caller is responsible to free
- * the buffer passed in @buf.
- */
-size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
- unsigned char **buf)
-{
- struct pcmcia_loop_get get = {
- .len = 0,
- .buf = buf,
- };
-
- *get.buf = NULL;
- pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
-
- return get.len;
-}
-EXPORT_SYMBOL(pcmcia_get_tuple);
-
-
-/**
- * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
- *
- * pcmcia_do_get_mac() is the internal callback for the call from
- * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
- * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
- * to struct net_device->dev_addr[i].
- */
-static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
- void *priv)
-{
- struct net_device *dev = priv;
- int i;
-
- if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
- return -EINVAL;
- if (tuple->TupleDataLen < ETH_ALEN + 2) {
- dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
- "LAN_NODE_ID\n");
- return -EINVAL;
- }
-
- if (tuple->TupleData[1] != ETH_ALEN) {
- dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
- return -EINVAL;
- }
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = tuple->TupleData[i+2];
- return 0;
-}
-
-/**
- * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
- * @p_dev: the struct pcmcia_device for which we want the address.
- * @dev: a properly prepared struct net_device to store the info to.
- *
- * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
- * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
- * must be set up properly by the driver (see examples!).
- */
-int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
-{
- return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
-}
-EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
-
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff