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Message-Id: <1403109059-9775-1-git-send-email-jiang.liu@linux.intel.com>
Date: Thu, 19 Jun 2014 00:30:59 +0800
From: Jiang Liu <jiang.liu@...ux.intel.com>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Thomas Gleixner <tglx@...utronix.de>,
Grant Likely <grant.likely@...aro.org>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Randy Dunlap <rdunlap@...radead.org>,
Yinghai Lu <yinghai@...nel.org>, x86@...nel.org
Cc: Jiang Liu <jiang.liu@...ux.intel.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Tony Luck <tony.luck@...el.com>,
Joerg Roedel <joro@...tes.org>,
Paul Gortmaker <paul.gortmaker@...driver.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linux-acpi@...r.kernel.org
Subject: [RFC Patch V2] x86/PCI/ACPI: kill private function resource_to_addr()
Replace private function resource_to_addr() to parse ACPI resources for
PCI host bridge with public ACPI resource interfaces.
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
Hi Bjorn,
Thanks for your suggestion. Then how about this version?
Regards!
Gerry
---
arch/x86/pci/acpi.c | 142 ++++++++++++++++++---------------------------------
1 file changed, 51 insertions(+), 91 deletions(-)
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 91bef49df228..cc0975ef86d1 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -218,114 +218,74 @@ static void teardown_mcfg_map(struct pci_root_info *info)
}
#endif
-static acpi_status resource_to_addr(struct acpi_resource *resource,
- struct acpi_resource_address64 *addr)
-{
- acpi_status status;
- struct acpi_resource_memory24 *memory24;
- struct acpi_resource_memory32 *memory32;
- struct acpi_resource_fixed_memory32 *fixed_memory32;
-
- memset(addr, 0, sizeof(*addr));
- switch (resource->type) {
- case ACPI_RESOURCE_TYPE_MEMORY24:
- memory24 = &resource->data.memory24;
- addr->resource_type = ACPI_MEMORY_RANGE;
- addr->minimum = memory24->minimum;
- addr->address_length = memory24->address_length;
- addr->maximum = addr->minimum + addr->address_length - 1;
- return AE_OK;
- case ACPI_RESOURCE_TYPE_MEMORY32:
- memory32 = &resource->data.memory32;
- addr->resource_type = ACPI_MEMORY_RANGE;
- addr->minimum = memory32->minimum;
- addr->address_length = memory32->address_length;
- addr->maximum = addr->minimum + addr->address_length - 1;
- return AE_OK;
- case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
- fixed_memory32 = &resource->data.fixed_memory32;
- addr->resource_type = ACPI_MEMORY_RANGE;
- addr->minimum = fixed_memory32->address;
- addr->address_length = fixed_memory32->address_length;
- addr->maximum = addr->minimum + addr->address_length - 1;
- return AE_OK;
- case ACPI_RESOURCE_TYPE_ADDRESS16:
- case ACPI_RESOURCE_TYPE_ADDRESS32:
- case ACPI_RESOURCE_TYPE_ADDRESS64:
- status = acpi_resource_to_address64(resource, addr);
- if (ACPI_SUCCESS(status) &&
- (addr->resource_type == ACPI_MEMORY_RANGE ||
- addr->resource_type == ACPI_IO_RANGE) &&
- addr->address_length > 0) {
- return AE_OK;
- }
- break;
- }
- return AE_ERROR;
-}
-
static acpi_status count_resource(struct acpi_resource *acpi_res, void *data)
{
struct pci_root_info *info = data;
- struct acpi_resource_address64 addr;
- acpi_status status;
+ struct resource r = {
+ .flags = 0
+ };
- status = resource_to_addr(acpi_res, &addr);
- if (ACPI_SUCCESS(status))
+ if (!acpi_dev_resource_memory(acpi_res, &r) &&
+ !acpi_dev_resource_address_space(acpi_res, &r))
+ return AE_OK;
+
+ if ((r.flags & (IORESOURCE_IO | IORESOURCE_MEM)) && resource_size(&r))
info->res_num++;
+
return AE_OK;
}
static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data)
{
struct pci_root_info *info = data;
- struct resource *res;
- struct acpi_resource_address64 addr;
- acpi_status status;
- unsigned long flags;
- u64 start, orig_end, end;
+ struct resource *res = &info->res[info->res_num];
+ u64 translation_offset = 0;
+
+ memset(res, 0, sizeof(*res));
+ if (acpi_dev_resource_memory(acpi_res, res)) {
+ res->flags &= IORESOURCE_MEM | IORESOURCE_IO;
+ } else if (acpi_dev_resource_address_space(acpi_res, res)) {
+ u64 orig_end;
+ struct acpi_resource_address64 addr;
+
+ res->flags &= IORESOURCE_MEM | IORESOURCE_IO;
+ if (res->flags == 0)
+ return AE_OK;
- status = resource_to_addr(acpi_res, &addr);
- if (!ACPI_SUCCESS(status))
- return AE_OK;
+ if (ACPI_FAILURE(acpi_resource_to_address64(acpi_res, &addr)))
+ return AE_OK;
- if (addr.resource_type == ACPI_MEMORY_RANGE) {
- flags = IORESOURCE_MEM;
- if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
- flags |= IORESOURCE_PREFETCH;
- } else if (addr.resource_type == ACPI_IO_RANGE) {
- flags = IORESOURCE_IO;
- } else
- return AE_OK;
+ if (addr.resource_type == ACPI_MEMORY_RANGE &&
+ addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
+ res->flags |= IORESOURCE_PREFETCH;
- start = addr.minimum + addr.translation_offset;
- orig_end = end = addr.maximum + addr.translation_offset;
+ translation_offset = addr.translation_offset;
+ orig_end = res->end;
+ res->start += translation_offset;
+ res->end += translation_offset;
- /* Exclude non-addressable range or non-addressable portion of range */
- end = min(end, (u64)iomem_resource.end);
- if (end <= start) {
- dev_info(&info->bridge->dev,
- "host bridge window [%#llx-%#llx] "
- "(ignored, not CPU addressable)\n", start, orig_end);
- return AE_OK;
- } else if (orig_end != end) {
- dev_info(&info->bridge->dev,
- "host bridge window [%#llx-%#llx] "
- "([%#llx-%#llx] ignored, not CPU addressable)\n",
- start, orig_end, end + 1, orig_end);
+ /* Exclude non-addressable range or non-addressable portion of range */
+ res->end = min(res->end, (u64)iomem_resource.end);
+ if (res->end <= res->start) {
+ dev_info(&info->bridge->dev,
+ "host bridge window [%#llx-%#llx] (ignored, not CPU addressable)\n",
+ res->start, orig_end);
+ return AE_OK;
+ } else if (orig_end != res->end) {
+ dev_info(&info->bridge->dev,
+ "host bridge window [%#llx-%#llx] ([%#llx-%#llx] ignored, not CPU addressable)\n",
+ res->start, orig_end, res->end + 1, orig_end);
+ }
}
- res = &info->res[info->res_num];
- res->name = info->name;
- res->flags = flags;
- res->start = start;
- res->end = end;
- info->res_offset[info->res_num] = addr.translation_offset;
- info->res_num++;
-
- if (!pci_use_crs)
- dev_printk(KERN_DEBUG, &info->bridge->dev,
- "host bridge window %pR (ignored)\n", res);
+ if (res->flags && resource_size(res)) {
+ res->name = info->name;
+ info->res_offset[info->res_num] = translation_offset;
+ info->res_num++;
+ if (!pci_use_crs)
+ dev_printk(KERN_DEBUG, &info->bridge->dev,
+ "host bridge window %pR (ignored)\n", res);
+ }
return AE_OK;
}
--
1.7.10.4
--
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