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Commit 79dba2ea authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: compute Address Space length rather than using _LEN
  x86/PCI: never allocate PCI MMIO resources below BIOS_END
parents d9e80b7d 48728e07

arch/x86/pci/acpi.c

+2 −38
Original line number Diff line number Diff line
@@ -121,30 +121,6 @@ count_resource(struct acpi_resource *acpi_res, void *data) 
	return AE_OK;

}



static void

align_resource(struct acpi_device *bridge, struct resource *res)

{

	int align = (res->flags & IORESOURCE_MEM) ? 16 : 4;



	/*

	 * Host bridge windows are not BARs, but the decoders on the PCI side

	 * that claim this address space have starting alignment and length

	 * constraints, so fix any obvious BIOS goofs.

	 */

	if (!IS_ALIGNED(res->start, align)) {

		dev_printk(KERN_DEBUG, &bridge->dev,

			   "host bridge window %pR invalid; "

			   "aligning start to %d-byte boundary\n", res, align);

		res->start &= ~(align - 1);

	}

	if (!IS_ALIGNED(res->end + 1, align)) {

		dev_printk(KERN_DEBUG, &bridge->dev,

			   "host bridge window %pR invalid; "

			   "aligning end to %d-byte boundary\n", res, align);

		res->end = ALIGN(res->end, align) - 1;

	}

}



static acpi_status

setup_resource(struct acpi_resource *acpi_res, void *data)

{
@@ -154,7 +130,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data) 
	acpi_status status;

	unsigned long flags;

	struct resource *root, *conflict;

	u64 start, end, max_len;

	u64 start, end;



	status = resource_to_addr(acpi_res, &addr);

	if (!ACPI_SUCCESS(status))
@@ -171,19 +147,8 @@ setup_resource(struct acpi_resource *acpi_res, void *data) 
	} else

		return AE_OK;



	max_len = addr.maximum - addr.minimum + 1;

	if (addr.address_length > max_len) {

		dev_printk(KERN_DEBUG, &info->bridge->dev,

			   "host bridge window length %#llx doesn't fit in "

			   "%#llx-%#llx, trimming\n",

			   (unsigned long long) addr.address_length,

			   (unsigned long long) addr.minimum,

			   (unsigned long long) addr.maximum);

		addr.address_length = max_len;

	}



	start = addr.minimum + addr.translation_offset;

	end = start + addr.address_length - 1;

	end = addr.maximum + addr.translation_offset;



	res = &info->res[info->res_num];

	res->name = info->name;
@@ -191,7 +156,6 @@ setup_resource(struct acpi_resource *acpi_res, void *data) 
	res->start = start;

	res->end = end;

	res->child = NULL;

	align_resource(info->bridge, res);



	if (!pci_use_crs) {

		dev_printk(KERN_DEBUG, &info->bridge->dev,

arch/x86/pci/i386.c

+3 −0
Original line number Diff line number Diff line
@@ -72,6 +72,9 @@ pcibios_align_resource(void *data, const struct resource *res, 
			return start;

		if (start & 0x300)

			start = (start + 0x3ff) & ~0x3ff;

	} else if (res->flags & IORESOURCE_MEM) {

		if (start < BIOS_END)

			start = BIOS_END;

	}

	return start;

}