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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.c331
1 files changed, 183 insertions, 148 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index a4cd9ad..54aa1c2 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -25,7 +25,6 @@
#include <asm/irq.h>
-#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
@@ -57,77 +56,107 @@ struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
}
+static void release_io_space(struct pcmcia_socket *s, struct resource *res)
+{
+ resource_size_t num = resource_size(res);
+ int i;
+
+ 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;
+ }
+ }
+ }
+} /* release_io_space */
+
/** 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,
- unsigned int *base, unsigned int num, u_int lines)
+static int alloc_io_space(struct pcmcia_socket *s, struct resource *res,
+ unsigned int lines)
{
unsigned int align;
+ unsigned int base = res->start;
+ unsigned int num = res->end;
+ int ret;
- align = (*base) ? (lines ? 1<<lines : 0) : 1;
+ 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;
if (align && (align < num)) {
- if (*base) {
- dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
- num, align);
+ if (base) {
+ dev_dbg(&s->dev, "odd IO request\n");
align = 0;
} else
while (align && (align < num))
align <<= 1;
}
- if (*base & ~(align-1)) {
- dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
- *base, align);
+ if (base & ~(align-1)) {
+ dev_dbg(&s->dev, "odd IO request\n");
align = 0;
}
- return s->resource_ops->find_io(s, attr, base, num, align);
-} /* 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, unsigned int base,
- unsigned int num)
-{
- int i;
+ res->start = base;
+ res->end = res->start + num - 1;
- for (i = 0; i < MAX_IO_WIN; i++) {
- if (!s->io[i].res)
- continue;
- if ((s->io[i].res->start <= base) &&
- (s->io[i].res->end >= base+num-1)) {
- s->io[i].InUse -= num;
- /* 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;
- }
+ 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;
+} /* alloc_io_space */
-/** 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 pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
- 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 (!p_dev || !p_dev->function_config)
- return -EINVAL;
-
s = p_dev->socket;
mutex_lock(&s->ops_mutex);
@@ -139,44 +168,57 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
return -EACCES;
}
- addr = (c->ConfigBase + reg->Offset) >> 1;
+ addr = (c->ConfigBase + where) >> 1;
+
+ ret = accessf(s, 1, addr, 1, val);
- switch (reg->Action) {
- case CS_READ:
- ret = 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:
- dev_dbg(&s->dev, "Invalid conf register request\n");
- ret = -EINVAL;
- break;
- }
mutex_unlock(&s->ops_mutex);
+
return ret;
-} /* pcmcia_access_configuration_register */
-EXPORT_SYMBOL(pcmcia_access_configuration_register);
+} /* pcmcia_access_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 pcmcia_access_config(p_dev, where, val, pcmcia_read_cis_mem);
+}
+EXPORT_SYMBOL(pcmcia_read_config_byte);
+
+
+/**
+ * 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_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val)
+{
+ return pcmcia_access_config(p_dev, where, &val, pcmcia_write_cis_mem);
+}
+EXPORT_SYMBOL(pcmcia_write_config_byte);
int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
- memreq_t *req)
+ unsigned int offset)
{
struct pcmcia_socket *s = p_dev->socket;
+ struct resource *res = wh;
+ unsigned int w;
int ret;
- wh--;
- if (wh >= MAX_WIN)
+ w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
+ if (w >= MAX_WIN)
return -EINVAL;
- if (req->Page != 0) {
- dev_dbg(&s->dev, "failure: requested page is zero\n");
- return -EINVAL;
- }
+
mutex_lock(&s->ops_mutex);
- s->win[wh].card_start = req->CardOffset;
- ret = s->ops->set_mem_map(s, &s->win[wh]);
+ s->win[w].card_start = offset;
+ ret = s->ops->set_mem_map(s, &s->win[w]);
if (ret)
dev_warn(&s->dev, "failed to set_mem_map\n");
mutex_unlock(&s->ops_mutex);
@@ -316,31 +358,25 @@ int pcmcia_release_configuration(struct pcmcia_device *p_dev)
* don't bother checking the port ranges against the current socket
* values.
*/
-static 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;
mutex_lock(&s->ops_mutex);
- c = p_dev->function_config;
-
if (!p_dev->_io)
goto out;
- p_dev->_io = 0;
+ c = p_dev->function_config;
- if ((c->io.BasePort1 != req->BasePort1) ||
- (c->io.NumPorts1 != req->NumPorts1) ||
- (c->io.BasePort2 != req->BasePort2) ||
- (c->io.NumPorts2 != req->NumPorts2))
- goto out;
+ release_io_space(s, &c->io[0]);
- c->state &= ~CONFIG_IO_REQ;
+ 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;
out:
mutex_unlock(&s->ops_mutex);
@@ -349,19 +385,22 @@ out:
} /* pcmcia_release_io */
-int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
+int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res)
{
struct pcmcia_socket *s = p_dev->socket;
pccard_mem_map *win;
+ unsigned int w;
+
+ dev_dbg(&p_dev->dev, "releasing window %pR\n", res);
- wh--;
- if (wh >= MAX_WIN)
+ w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
+ if (w >= MAX_WIN)
return -EINVAL;
mutex_lock(&s->ops_mutex);
- win = &s->win[wh];
+ win = &s->win[w];
- if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
+ if (!(p_dev->_win & CLIENT_WIN_REQ(w))) {
dev_dbg(&s->dev, "not releasing unknown window\n");
mutex_unlock(&s->ops_mutex);
return -EINVAL;
@@ -370,15 +409,16 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
/* Shut down memory window */
win->flags &= ~MAP_ACTIVE;
s->ops->set_mem_map(s, win);
- s->state &= ~SOCKET_WIN_REQ(wh);
+ s->state &= ~SOCKET_WIN_REQ(w);
/* Release system memory */
if (win->res) {
+ release_resource(res);
release_resource(win->res);
kfree(win->res);
win->res = NULL;
}
- p_dev->_win &= ~CLIENT_WIN_REQ(wh);
+ p_dev->_win &= ~CLIENT_WIN_REQ(w);
mutex_unlock(&s->ops_mutex);
return 0;
@@ -473,13 +513,13 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev,
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;
+ 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;
+ 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);
}
@@ -513,28 +553,29 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev,
EXPORT_SYMBOL(pcmcia_request_configuration);
-/** pcmcia_request_io
+/**
+ * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices
*
- * Request_io() reserves ranges of port addresses for a socket.
- * I have not implemented range sharing or alias addressing.
+ * pcmcia_request_io() attepts 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;
mutex_lock(&s->ops_mutex);
+ dev_dbg(&s->dev, "pcmcia_request_io: %pR , %pR", &c->io[0], &c->io[1]);
if (!(s->state & SOCKET_PRESENT)) {
- dev_dbg(&s->dev, "No card present\n");
+ dev_dbg(&s->dev, "pcmcia_request_io: No card present\n");
goto out;
}
- if (!req)
- goto out;
-
- c = p_dev->function_config;
if (c->state & CONFIG_LOCKED) {
dev_dbg(&s->dev, "Configuration is locked\n");
goto out;
@@ -543,40 +584,25 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
dev_dbg(&s->dev, "IO already configured\n");
goto out;
}
- if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
- dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
- goto out;
- }
- if ((req->NumPorts2 > 0) &&
- (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
- dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
- goto out;
- }
- dev_dbg(&s->dev, "trying to allocate resource 1\n");
- ret = alloc_io_space(s, req->Attributes1, &req->BasePort1,
- req->NumPorts1, req->IOAddrLines);
- if (ret) {
- dev_dbg(&s->dev, "allocation of resource 1 failed\n");
+ ret = alloc_io_space(s, &c->io[0], p_dev->io_lines);
+ if (ret)
goto out;
- }
- if (req->NumPorts2) {
- dev_dbg(&s->dev, "trying to allocate resource 2\n");
- ret = alloc_io_space(s, req->Attributes2, &req->BasePort2,
- req->NumPorts2, req->IOAddrLines);
+ if (c->io[1].end) {
+ ret = alloc_io_space(s, &c->io[1], p_dev->io_lines);
if (ret) {
- dev_dbg(&s->dev, "allocation of resource 2 failed\n");
- release_io_space(s, req->BasePort1, req->NumPorts1);
+ release_io_space(s, &c->io[0]);
goto out;
}
- }
+ } else
+ c->io[1].start = 0;
- c->io = *req;
c->state |= CONFIG_IO_REQ;
p_dev->_io = 1;
- dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret);
+ dev_dbg(&s->dev, "pcmcia_request_io succeeded: %pR , %pR",
+ &c->io[0], &c->io[1]);
out:
mutex_unlock(&s->ops_mutex);
@@ -651,7 +677,7 @@ 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 u8 pcmcia_used_irq[32];
static irqreturn_t test_action(int cpl, void *dev_id)
{
@@ -674,6 +700,9 @@ static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
for (try = 0; try < 64; try++) {
irq = try % 32;
+ if (irq > NR_IRQS)
+ continue;
+
/* marked as available by driver, not blocked by userspace? */
if (!((mask >> irq) & 1))
continue;
@@ -767,23 +796,18 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
struct pcmcia_socket *s = p_dev->socket;
pccard_mem_map *win;
u_long align;
+ struct resource *res;
int w;
if (!(s->state & SOCKET_PRESENT)) {
dev_dbg(&s->dev, "No card present\n");
return -ENODEV;
}
- if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
- dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
- return -EINVAL;
- }
/* 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);
+ align = (s->features & SS_CAP_MEM_ALIGN) ? req->Size : s->map_size;
if (req->Size & (s->map_size-1)) {
dev_dbg(&s->dev, "invalid map size\n");
return -EINVAL;
@@ -797,20 +821,21 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
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) {
dev_dbg(&s->dev, "all windows are used already\n");
+ mutex_unlock(&s->ops_mutex);
return -EINVAL;
}
- mutex_lock(&s->ops_mutex);
win = &s->win[w];
if (!(s->features & SS_CAP_STATIC_MAP)) {
win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
- (req->Attributes & WIN_MAP_BELOW_1MB), s);
+ 0, s);
if (!win->res) {
dev_dbg(&s->dev, "allocating mem region failed\n");
mutex_unlock(&s->ops_mutex);
@@ -821,16 +846,8 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
/* Configure the socket controller */
win->map = w+1;
- win->flags = 0;
+ win->flags = req->Attributes;
win->speed = req->AccessSpeed;
- if (req->Attributes & WIN_MEMORY_TYPE)
- win->flags |= MAP_ATTRIB;
- if (req->Attributes & WIN_ENABLE)
- win->flags |= MAP_ACTIVE;
- if (req->Attributes & WIN_DATA_WIDTH_16)
- win->flags |= MAP_16BIT;
- if (req->Attributes & WIN_USE_WAIT)
- win->flags |= MAP_USE_WAIT;
win->card_start = 0;
if (s->ops->set_mem_map(s, win) != 0) {
@@ -846,8 +863,21 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
else
req->Base = win->res->start;
+ /* convert to new-style resources */
+ res = p_dev->resource[w + MAX_IO_WIN];
+ res->start = req->Base;
+ res->end = req->Base + req->Size - 1;
+ res->flags &= ~IORESOURCE_BITS;
+ res->flags |= (req->Attributes & WIN_FLAGS_MAP) | (win->map << 2);
+ res->flags |= IORESOURCE_MEM;
+ res->parent = win->res;
+ if (win->res)
+ request_resource(&iomem_resource, res);
+
+ dev_dbg(&s->dev, "request_window results in %pR\n", res);
+
mutex_unlock(&s->ops_mutex);
- *wh = w + 1;
+ *wh = res;
return 0;
} /* pcmcia_request_window */
@@ -855,13 +885,18 @@ EXPORT_SYMBOL(pcmcia_request_window);
void pcmcia_disable_device(struct pcmcia_device *p_dev)
{
+ int i;
+ 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, &p_dev->io);
+ pcmcia_release_io(p_dev);
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);