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path: root/drivers/acpi/resource.c
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Diffstat (limited to 'drivers/acpi/resource.c')
-rw-r--r--drivers/acpi/resource.c58
1 files changed, 32 insertions, 26 deletions
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 57891a621b96..c902c8eece81 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -184,13 +184,14 @@ bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res)
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
-static bool acpi_decode_space(struct resource *res,
+static bool acpi_decode_space(struct resource_win *win,
struct acpi_resource_address *addr,
struct acpi_address64_attribute *attr)
{
u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
bool wp = addr->info.mem.write_protect;
u64 len = attr->address_length;
+ struct resource *res = &win->res;
/*
* Filter out invalid descriptor according to ACPI Spec 5.0, section
@@ -218,6 +219,8 @@ static bool acpi_decode_space(struct resource *res,
return false;
}
+ win->offset = attr->translation_offset;
+
if (addr->producer_consumer == ACPI_PRODUCER)
res->flags |= IORESOURCE_WINDOW;
@@ -230,27 +233,28 @@ static bool acpi_decode_space(struct resource *res,
/**
* acpi_dev_resource_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
- * @res: Output generic resource object.
+ * @win: Output generic resource object.
*
* Check if the given ACPI resource object represents an address space resource
* and if that's the case, use the information in it to populate the generic
- * resource object pointed to by @res.
+ * resource object pointed to by @win.
*
* Return:
- * 1) false with res->flags setting to zero: not the expected resource type
- * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
+ * 1) false with win->res.flags setting to zero: not the expected resource type
+ * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
+ * resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_address_space(struct acpi_resource *ares,
- struct resource *res)
+ struct resource_win *win)
{
struct acpi_resource_address64 addr;
- res->flags = 0;
+ win->res.flags = 0;
if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr)))
return false;
- return acpi_decode_space(res, (struct acpi_resource_address *)&addr,
+ return acpi_decode_space(win, (struct acpi_resource_address *)&addr,
&addr.address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
@@ -258,29 +262,30 @@ EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
/**
* acpi_dev_resource_ext_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
- * @res: Output generic resource object.
+ * @win: Output generic resource object.
*
* Check if the given ACPI resource object represents an extended address space
* resource and if that's the case, use the information in it to populate the
- * generic resource object pointed to by @res.
+ * generic resource object pointed to by @win.
*
* Return:
- * 1) false with res->flags setting to zero: not the expected resource type
- * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource
+ * 1) false with win->res.flags setting to zero: not the expected resource type
+ * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned
+ * resource
* 3) true: valid assigned resource
*/
bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
- struct resource *res)
+ struct resource_win *win)
{
struct acpi_resource_extended_address64 *ext_addr;
- res->flags = 0;
+ win->res.flags = 0;
if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64)
return false;
ext_addr = &ares->data.ext_address64;
- return acpi_decode_space(res, (struct acpi_resource_address *)ext_addr,
+ return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr,
&ext_addr->address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);
@@ -441,7 +446,7 @@ struct res_proc_context {
int error;
};
-static acpi_status acpi_dev_new_resource_entry(struct resource *r,
+static acpi_status acpi_dev_new_resource_entry(struct resource_win *win,
struct res_proc_context *c)
{
struct resource_list_entry *rentry;
@@ -451,7 +456,7 @@ static acpi_status acpi_dev_new_resource_entry(struct resource *r,
c->error = -ENOMEM;
return AE_NO_MEMORY;
}
- rentry->res = *r;
+ rentry->res = win->res;
list_add_tail(&rentry->node, c->list);
c->count++;
return AE_OK;
@@ -461,7 +466,8 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
void *context)
{
struct res_proc_context *c = context;
- struct resource r;
+ struct resource_win win;
+ struct resource *res = &win.res;
int i;
if (c->preproc) {
@@ -476,18 +482,18 @@ static acpi_status acpi_dev_process_resource(struct acpi_resource *ares,
}
}
- memset(&r, 0, sizeof(r));
+ memset(&win, 0, sizeof(win));
- if (acpi_dev_resource_memory(ares, &r)
- || acpi_dev_resource_io(ares, &r)
- || acpi_dev_resource_address_space(ares, &r)
- || acpi_dev_resource_ext_address_space(ares, &r))
- return acpi_dev_new_resource_entry(&r, c);
+ if (acpi_dev_resource_memory(ares, res)
+ || acpi_dev_resource_io(ares, res)
+ || acpi_dev_resource_address_space(ares, &win)
+ || acpi_dev_resource_ext_address_space(ares, &win))
+ return acpi_dev_new_resource_entry(&win, c);
- for (i = 0; acpi_dev_resource_interrupt(ares, i, &r); i++) {
+ for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) {
acpi_status status;
- status = acpi_dev_new_resource_entry(&r, c);
+ status = acpi_dev_new_resource_entry(&win, c);
if (ACPI_FAILURE(status))
return status;
}

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