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ACPI: Unify the parsing of address_space and ext_address_space 

With the unions in place which let us identify the substructs we can
use a single parser for address_space and ext_address_space.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Thomas Gleixner 2015-02-02 10:42:51 +08:00 committed by Rafael J. Wysocki
parent e814f6deee
commit eb76d55e66
1 changed files with 34 additions and 56 deletions
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90
drivers/acpi/resource.c
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@ -178,6 +178,35 @@ 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,
struct acpi_resource_address *addr,
struct acpi_address64_attribute *attr)
{
u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16;
bool window = addr->producer_consumer == ACPI_PRODUCER;
bool wp = addr->info.mem.write_protect;
u64 len = attr->address_length;
res->start = attr->minimum;
res->end = attr->maximum;
switch (addr->resource_type) {
case ACPI_MEMORY_RANGE:
acpi_dev_memresource_flags(res, len, wp, window);
break;
case ACPI_IO_RANGE:
acpi_dev_ioresource_flags(res, len, iodec, window);
break;
case ACPI_BUS_NUMBER_RANGE:
res->flags = IORESOURCE_BUS;
break;
default:
return false;
}
return !(res->flags & IORESOURCE_DISABLED);
}
/**
* acpi_dev_resource_address_space - Extract ACPI address space information.
* @ares: Input ACPI resource object.
@ -190,39 +219,13 @@ EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
bool acpi_dev_resource_address_space(struct acpi_resource *ares,
struct resource *res)
{
acpi_status status;
struct acpi_resource_address64 addr;
bool window;
u8 io_decode;
status = acpi_resource_to_address64(ares, &addr);
if (ACPI_FAILURE(status))
if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr)))
return false;
res->start = addr.address.minimum;
res->end = addr.address.maximum;
window = addr.producer_consumer == ACPI_PRODUCER;
switch(addr.resource_type) {
case ACPI_MEMORY_RANGE:
acpi_dev_memresource_flags(res, addr.address.address_length,
addr.info.mem.write_protect,
window);
break;
case ACPI_IO_RANGE:
io_decode = addr.address.granularity == 0xfff ?
ACPI_DECODE_10 : ACPI_DECODE_16;
acpi_dev_ioresource_flags(res, addr.address.address_length,
io_decode, window);
break;
case ACPI_BUS_NUMBER_RANGE:
res->flags = IORESOURCE_BUS;
break;
default:
return false;
}
return !(res->flags & IORESOURCE_DISABLED);
return acpi_decode_space(res, (struct acpi_resource_address *)&addr,
&addr.address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space);
@ -239,39 +242,14 @@ bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
struct resource *res)
{
struct acpi_resource_extended_address64 *ext_addr;
bool window;
u8 io_decode;
if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64)
return false;
ext_addr = &ares->data.ext_address64;
res->start = ext_addr->address.minimum;
res->end = ext_addr->address.maximum;
window = ext_addr->producer_consumer == ACPI_PRODUCER;
switch(ext_addr->resource_type) {
case ACPI_MEMORY_RANGE:
acpi_dev_memresource_flags(res,
ext_addr->address.address_length,
ext_addr->info.mem.write_protect,
window);
break;
case ACPI_IO_RANGE:
io_decode = ext_addr->address.granularity == 0xfff ?
ACPI_DECODE_10 : ACPI_DECODE_16;
acpi_dev_ioresource_flags(res, ext_addr->address.address_length,
io_decode, window);
break;
case ACPI_BUS_NUMBER_RANGE:
res->flags = IORESOURCE_BUS;
break;
default:
return false;
}
return !(res->flags & IORESOURCE_DISABLED);
return acpi_decode_space(res, (struct acpi_resource_address *)ext_addr,
&ext_addr->address);
}
EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space);