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PNPACPI: add bus number support

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Add support for bus number resources.  This is for bridges with a range of
bus numbers behind them.  Previously, PNP ignored bus number resources.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas 2010-03-05 10:47:57 -07:00 committed by Len Brown
parent fa35b49260
commit 7e0e9c0427
5 changed files with 47 additions and 2 deletions
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3
drivers/pnp/base.h
View File

@ -166,6 +166,9 @@ struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end, int flags);
struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end);
extern int pnp_debug;

1
drivers/pnp/interface.c
View File

@ -278,6 +278,7 @@ static ssize_t pnp_show_current_resources(struct device *dmdev,
switch (pnp_resource_type(res)) {
case IORESOURCE_IO:
case IORESOURCE_MEM:
case IORESOURCE_BUS:
pnp_printf(buffer, " %#llx-%#llx%s\n",
(unsigned long long) res->start,
(unsigned long long) res->end,

14
drivers/pnp/pnpacpi/rsparser.c
View File

@ -265,6 +265,14 @@ static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
pnp_add_mem_resource(dev, start, end, flags);
}
static void pnpacpi_parse_allocated_busresource(struct pnp_dev *dev,
u64 start, u64 len)
{
u64 end = start + len - 1;
pnp_add_bus_resource(dev, start, end);
}
static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
struct acpi_resource *res)
{
@ -290,6 +298,9 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
p->minimum, p->address_length,
p->granularity == 0xfff ? ACPI_DECODE_10 :
ACPI_DECODE_16, window);
else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
pnpacpi_parse_allocated_busresource(dev, p->minimum,
p->address_length);
}
static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
@ -309,6 +320,9 @@ static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
p->minimum, p->address_length,
p->granularity == 0xfff ? ACPI_DECODE_10 :
ACPI_DECODE_16, window);
else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
pnpacpi_parse_allocated_busresource(dev, p->minimum,
p->address_length);
}
static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,

27
drivers/pnp/resource.c
View File

@ -470,7 +470,8 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
unsigned long pnp_resource_type(struct resource *res)
{
return res->flags & (IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_IRQ | IORESOURCE_DMA);
IORESOURCE_IRQ | IORESOURCE_DMA |
IORESOURCE_BUS);
}
struct resource *pnp_get_resource(struct pnp_dev *dev,
@ -590,6 +591,30 @@ struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
return pnp_res;
}
struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
resource_size_t start,
resource_size_t end)
{
struct pnp_resource *pnp_res;
struct resource *res;
pnp_res = pnp_new_resource(dev);
if (!pnp_res) {
dev_err(&dev->dev, "can't add resource for BUS %#llx-%#llx\n",
(unsigned long long) start,
(unsigned long long) end);
return NULL;
}
res = &pnp_res->res;
res->flags = IORESOURCE_BUS;
res->start = start;
res->end = end;
pnp_dbg(&dev->dev, " add %pr\n", res);
return pnp_res;
}
/*
* Determine whether the specified resource is a possible configuration
* for this device.

4
drivers/pnp/support.c
View File

@ -69,8 +69,10 @@ char *pnp_resource_type_name(struct resource *res)
return "irq";
case IORESOURCE_DMA:
return "dma";
case IORESOURCE_BUS:
return "bus";
}
return NULL;
return "unknown";
}
void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)