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Commit fa35b492 authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Len Brown
Browse files

PNPACPI: add window support 



Add support for resource windows.  This is for bridge resources, i.e.,
regions where a bridge forwards transactions from the primary to the
secondary side.  This does not add support for *setting* windows via
the /proc interface.

Signed-off-by: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 9d7cca04

drivers/pnp/interface.c

+4 −2
Original line number Diff line number Diff line
@@ -278,9 +278,11 @@ static ssize_t pnp_show_current_resources(struct device *dmdev, 
		switch (pnp_resource_type(res)) {

		case IORESOURCE_IO:

		case IORESOURCE_MEM:

			pnp_printf(buffer, " %#llx-%#llx\n",

			pnp_printf(buffer, " %#llx-%#llx%s\n",

				   (unsigned long long) res->start,

				   (unsigned long long) res->end);

				   (unsigned long long) res->end,

				   res->flags & IORESOURCE_WINDOW ?

					" window" : "");

			break;

		case IORESOURCE_IRQ:

		case IORESOURCE_DMA:

drivers/pnp/pnpacpi/rsparser.c

+20 −15
Original line number Diff line number Diff line
@@ -177,7 +177,8 @@ static int dma_flags(struct pnp_dev *dev, int type, int bus_master, 
}



static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start,

					       u64 len, int io_decode)

					       u64 len, int io_decode,

					       int window)

{

	int flags = 0;

	u64 end = start + len - 1;
@@ -186,6 +187,8 @@ static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start, 
		flags |= IORESOURCE_IO_16BIT_ADDR;

	if (len == 0 || end >= 0x10003)

		flags |= IORESOURCE_DISABLED;

	if (window)

		flags |= IORESOURCE_WINDOW;



	pnp_add_io_resource(dev, start, end, flags);

}
@@ -247,7 +250,7 @@ static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev, 


static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,

						u64 start, u64 len,

						int write_protect)

						int write_protect, int window)

{

	int flags = 0;

	u64 end = start + len - 1;
@@ -256,6 +259,8 @@ static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev, 
		flags |= IORESOURCE_DISABLED;

	if (write_protect == ACPI_READ_WRITE_MEMORY)

		flags |= IORESOURCE_MEM_WRITEABLE;

	if (window)

		flags |= IORESOURCE_WINDOW;



	pnp_add_mem_resource(dev, start, end, flags);

}
@@ -265,6 +270,7 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev, 
{

	struct acpi_resource_address64 addr, *p = &addr;

	acpi_status status;

	int window;



	status = acpi_resource_to_address64(res, p);

	if (!ACPI_SUCCESS(status)) {
@@ -273,37 +279,36 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev, 
		return;

	}



	if (p->producer_consumer == ACPI_PRODUCER)

		return;

	window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;



	if (p->resource_type == ACPI_MEMORY_RANGE)

		pnpacpi_parse_allocated_memresource(dev,

			p->minimum, p->address_length,

			p->info.mem.write_protect);

			p->info.mem.write_protect, window);

	else if (p->resource_type == ACPI_IO_RANGE)

		pnpacpi_parse_allocated_ioresource(dev,

			p->minimum, p->address_length,

			p->granularity == 0xfff ? ACPI_DECODE_10 :

				ACPI_DECODE_16);

				ACPI_DECODE_16, window);

}



static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,

						      struct acpi_resource *res)

{

	struct acpi_resource_extended_address64 *p = &res->data.ext_address64;

	int window;



	if (p->producer_consumer == ACPI_PRODUCER)

		return;

	window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;



	if (p->resource_type == ACPI_MEMORY_RANGE)

		pnpacpi_parse_allocated_memresource(dev,

			p->minimum, p->address_length,

			p->info.mem.write_protect);

			p->info.mem.write_protect, window);

	else if (p->resource_type == ACPI_IO_RANGE)

		pnpacpi_parse_allocated_ioresource(dev,

			p->minimum, p->address_length,

			p->granularity == 0xfff ? ACPI_DECODE_10 :

				ACPI_DECODE_16);

				ACPI_DECODE_16, window);

}



static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
@@ -368,7 +373,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, 
		pnpacpi_parse_allocated_ioresource(dev,

			io->minimum,

			io->address_length,

			io->io_decode);

			io->io_decode, 0);

		break;



	case ACPI_RESOURCE_TYPE_START_DEPENDENT:
@@ -380,7 +385,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, 
		pnpacpi_parse_allocated_ioresource(dev,

			fixed_io->address,

			fixed_io->address_length,

			ACPI_DECODE_10);

			ACPI_DECODE_10, 0);

		break;



	case ACPI_RESOURCE_TYPE_VENDOR:
@@ -396,21 +401,21 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, 
		pnpacpi_parse_allocated_memresource(dev,

			memory24->minimum,

			memory24->address_length,

			memory24->write_protect);

			memory24->write_protect, 0);

		break;

	case ACPI_RESOURCE_TYPE_MEMORY32:

		memory32 = &res->data.memory32;

		pnpacpi_parse_allocated_memresource(dev,

			memory32->minimum,

			memory32->address_length,

			memory32->write_protect);

			memory32->write_protect, 0);

		break;

	case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:

		fixed_memory32 = &res->data.fixed_memory32;

		pnpacpi_parse_allocated_memresource(dev,

			fixed_memory32->address,

			fixed_memory32->address_length,

			fixed_memory32->write_protect);

			fixed_memory32->write_protect, 0);

		break;

	case ACPI_RESOURCE_TYPE_ADDRESS16:

	case ACPI_RESOURCE_TYPE_ADDRESS32: