From fa35b49260b615d634bfa1f767aa315fa323c2e9 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 5 Mar 2010 10:47:52 -0700 Subject: 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: Bjorn Helgaas Signed-off-by: Len Brown --- drivers/pnp/interface.c | 6 ++++-- drivers/pnp/pnpacpi/rsparser.c | 35 ++++++++++++++++++++--------------- 2 files changed, 24 insertions(+), 17 deletions(-) (limited to 'drivers/pnp') diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c index 68b0c04987e4..ba437b704de8 100644 --- a/drivers/pnp/interface.c +++ b/drivers/pnp/interface.c @@ -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: diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 5702b2c8691f..0d7d61da63fc 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -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: -- cgit v1.2.3-58-ga151 From 7e0e9c042790d4ea44c6a00ddaad8b8bbcc3f17f Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 5 Mar 2010 10:47:57 -0700 Subject: PNPACPI: add bus number support 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 Signed-off-by: Len Brown --- drivers/pnp/base.h | 3 +++ drivers/pnp/interface.c | 1 + drivers/pnp/pnpacpi/rsparser.c | 14 ++++++++++++++ drivers/pnp/resource.c | 27 ++++++++++++++++++++++++++- drivers/pnp/support.c | 4 +++- 5 files changed, 47 insertions(+), 2 deletions(-) (limited to 'drivers/pnp') diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h index 0b8d14050efa..0bab84ebb15d 100644 --- a/drivers/pnp/base.h +++ b/drivers/pnp/base.h @@ -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; diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c index ba437b704de8..cfaf5b73540b 100644 --- a/drivers/pnp/interface.c +++ b/drivers/pnp/interface.c @@ -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, diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 0d7d61da63fc..54514aa35b09 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -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, diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c index 64d0596bafb5..5b277dbaacde 100644 --- a/drivers/pnp/resource.c +++ b/drivers/pnp/resource.c @@ -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. diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c index 9585c1c1cc36..f5beb24d036a 100644 --- a/drivers/pnp/support.c +++ b/drivers/pnp/support.c @@ -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) -- cgit v1.2.3-58-ga151