From: Jiang Liu <jiang.liu@linux.intel.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Bjorn Helgaas <bhelgaas@google.com>,
Randy Dunlap <rdunlap@infradead.org>,
Yinghai Lu <yinghai@kernel.org>, Borislav Petkov <bp@alien8.de>,
Grant Likely <grant.likely@linaro.org>,
x86@kernel.org
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Tony Luck <tony.luck@intel.com>, Joerg Roedel <joro@8bytes.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: [Patch v4 01/16] x86, PCI, ACPI: Kill private function resource_to_addr() in arch/x86/pci/acpi.c
Date: Thu, 28 Aug 2014 10:22:26 +0800 [thread overview]
Message-ID: <1409192561-19744-2-git-send-email-jiang.liu@linux.intel.com> (raw)
In-Reply-To: <1409192561-19744-1-git-send-email-jiang.liu@linux.intel.com>
Private function resource_to_addr() is used to parse ACPI resources
for PCI host bridge. There are public interfaces available for that
purpose, so replace resource_to_addr() with public interfaces.
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
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 cfd1b132b8e3..0e716fa56ae5 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
next prev parent reply other threads:[~2014-08-28 2:22 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-28 2:22 [Patch v4 00/16] Enable support of IOAPIC hotplug on x86 platforms Jiang Liu
2014-08-28 2:22 ` Jiang Liu [this message]
2014-08-28 2:22 ` [Patch v4 02/16] ACPI: Correct return value of acpi_dev_resource_address_space() Jiang Liu
2014-08-28 2:22 ` [Patch v4 03/16] ACPI: Fix minor syntax issues in processor_core.c Jiang Liu
2014-08-28 2:22 ` [Patch v4 04/16] ACPI: Rename processor_core.c as apic_id.c Jiang Liu
2014-09-07 22:37 ` Rafael J. Wysocki
2014-09-08 12:51 ` Hanjun Guo
2014-09-08 21:00 ` Rafael J. Wysocki
2014-09-09 2:33 ` Jiang Liu
2014-08-28 2:22 ` [Patch v4 05/16] ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug Jiang Liu
2014-09-09 10:54 ` Thomas Gleixner
2014-09-10 1:58 ` Jiang Liu
2014-08-28 2:22 ` [Patch v4 06/16] x86, irq: Split out alloc_ioapic_save_registers() Jiang Liu
2014-08-28 2:22 ` [Patch v4 07/16] x86, irq: Prefer assigned ID in APIC ID register for x86_64 Jiang Liu
2014-09-09 11:04 ` Thomas Gleixner
2014-09-10 2:14 ` Jiang Liu
2014-08-28 2:22 ` [Patch v4 08/16] x86, irq: Remove __init marker for functions will be used by IOAPIC hotplug Jiang Liu
2014-08-28 2:22 ` [Patch v4 09/16] x86, irq: Keep balance of IOAPIC pin reference count Jiang Liu
2014-08-28 2:22 ` [Patch v4 10/16] x86, irq: Refine mp_register_ioapic() to prepare for IOAPIC hotplug Jiang Liu
2014-08-28 2:22 ` [Patch v4 11/16] x86, irq, ACPI: Introduce a rwsem to protect IOAPIC operations from hotplug Jiang Liu
2014-08-28 2:22 ` [Patch v4 12/16] x86, irq, ACPI: Implement interface to support ACPI based IOAPIC hot-addition Jiang Liu
2014-09-09 12:20 ` Thomas Gleixner
2014-09-10 3:13 ` Jiang Liu
2014-09-10 20:06 ` Thomas Gleixner
2014-09-11 6:05 ` Jiang Liu
2014-09-11 6:08 ` Jiang Liu
2014-08-28 2:22 ` [Patch v4 13/16] x86, irq, ACPI: Implement interfaces to support ACPI based IOAPIC hot-removal Jiang Liu
2014-08-28 2:22 ` [Patch v4 14/16] x86, irq: Introduce helper to check whether an IOAPIC has been registered Jiang Liu
2014-09-09 12:37 ` Thomas Gleixner
2014-09-10 2:46 ` Jiang Liu
2014-09-10 20:08 ` Thomas Gleixner
2014-09-11 7:17 ` Jiang Liu
2014-08-28 2:22 ` [Patch v4 15/16] PCI: Remove PCI ioapic driver Jiang Liu
2014-08-28 2:22 ` [Patch v4 16/16] x86, irq, ACPI: Implement ACPI driver to support IOAPIC hotplug Jiang Liu
2014-09-07 22:05 ` [Patch v4 00/16] Enable support of IOAPIC hotplug on x86 platforms Rafael J. Wysocki
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