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pcmcia: insert PCMCIA device resources into resource tree 

Insert PCMCIA device resources into the resource tree. However, this is
currently only implemented for sockets which do not statically map the
resources.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski 2010-07-25 13:10:22 +02:00
parent 8f677ea07a
commit ad0c7be28b
6 changed files with 60 additions and 34 deletions
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3
drivers/pcmcia/cs_internal.h
View File

@ -62,7 +62,8 @@ struct pccard_resource_ops {
unsigned int attr,
unsigned int *base,
unsigned int num,
unsigned int align);
unsigned int align,
struct resource **parent);
struct resource* (*find_mem) (unsigned long base, unsigned long num,
unsigned long align, int low,
struct pcmcia_socket *s);

4
drivers/pcmcia/ds.c
View File

@ -553,11 +553,11 @@ static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
p_dev->function_config = c;
kref_init(&c->ref);
for (i = 0; i < MAX_IO_WIN; i++) {
c->io[i].name = dev_name(&p_dev->dev);
c->io[i].name = p_dev->devname;
c->io[i].flags = IORESOURCE_IO;
}
for (i = 0; i< MAX_WIN; i++) {
c->mem[i].name = dev_name(&p_dev->dev);
c->mem[i].name = p_dev->devname;
c->mem[i].flags = IORESOURCE_MEM;
}
}

74
drivers/pcmcia/pcmcia_resource.c
View File

@ -56,6 +56,33 @@ 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
@ -87,43 +114,28 @@ static int alloc_io_space(struct pcmcia_socket *s, struct resource *res,
align = 0;
}
ret = s->resource_ops->find_io(s, res->flags, &base, num, align);
ret = s->resource_ops->find_io(s, res->flags, &base, num, align,
&res->parent);
if (ret) {
dev_dbg(&s->dev, "alloc_io_space request returned %d", ret);
dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret);
return -EINVAL;
}
res->start = base;
res->end = res->start + num - 1;
dev_dbg(&s->dev, "alloc_io_space request returned %pR, %d\n", res, ret);
return 0;
} /* alloc_io_space */
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;
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;
}
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 */
/**
@ -401,6 +413,7 @@ int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res)
/* Release system memory */
if (win->res) {
release_resource(res);
release_resource(win->res);
kfree(win->res);
win->res = NULL;
@ -853,6 +866,11 @@ int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_ha
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);

5
drivers/pcmcia/rsrc_iodyn.c
View File

@ -87,7 +87,7 @@ static struct resource *__iodyn_find_io_region(struct pcmcia_socket *s,
static int iodyn_find_io(struct pcmcia_socket *s, unsigned int attr,
unsigned int *base, unsigned int num,
unsigned int align)
unsigned int align, struct resource **parent)
{
int i, ret = 0;
@ -128,6 +128,7 @@ static int iodyn_find_io(struct pcmcia_socket *s, unsigned int attr,
((res->flags & ~IORESOURCE_BITS) |
(attr & IORESOURCE_BITS));
s->io[i].InUse = num;
*parent = res;
return 0;
}
@ -139,6 +140,7 @@ static int iodyn_find_io(struct pcmcia_socket *s, unsigned int attr,
continue;
*base = try;
s->io[i].InUse += num;
*parent = res;
return 0;
}
@ -151,6 +153,7 @@ static int iodyn_find_io(struct pcmcia_socket *s, unsigned int attr,
continue;
*base = try;
s->io[i].InUse += num;
*parent = res;
return 0;
}
}

3
drivers/pcmcia/rsrc_mgr.c
View File

@ -47,11 +47,12 @@ struct resource *pcmcia_make_resource(unsigned long start, unsigned long end,
static int static_find_io(struct pcmcia_socket *s, unsigned int attr,
unsigned int *base, unsigned int num,
unsigned int align)
unsigned int align, struct resource **parent)
{
if (!s->io_offset)
return -EINVAL;
*base = s->io_offset | (*base & 0x0fff);
*parent = NULL;
return 0;
}

5
drivers/pcmcia/rsrc_nonstatic.c
View File

@ -718,7 +718,7 @@ static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s,
static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr,
unsigned int *base, unsigned int num,
unsigned int align)
unsigned int align, struct resource **parent)
{
int i, ret = 0;
@ -760,6 +760,7 @@ static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr,
((res->flags & ~IORESOURCE_BITS) |
(attr & IORESOURCE_BITS));
s->io[i].InUse = num;
*parent = res;
return 0;
}
@ -775,6 +776,7 @@ static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr,
continue;
*base = try;
s->io[i].InUse += num;
*parent = res;
return 0;
}
}
@ -793,6 +795,7 @@ static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr,
continue;
*base = try;
s->io[i].InUse += num;
*parent = res;
return 0;
}
}