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-rw-r--r--arch/x86/Kconfig13
-rw-r--r--arch/x86/kernel/Makefile2
-rw-r--r--arch/x86/kernel/pci-dma.c2
-rw-r--r--arch/x86/pci/acpi.c59
-rw-r--r--arch/x86/pci/amd_bus.c8
5 files changed, 40 insertions, 44 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d1430ef6b4f..738bdc6b0f8 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1913,25 +1913,26 @@ config DMAR_DEFAULT_ON
recommended you say N here while the DMAR code remains
experimental.
-config DMAR_GFX_WA
- def_bool y
- prompt "Support for Graphics workaround"
+config DMAR_BROKEN_GFX_WA
+ def_bool n
+ prompt "Workaround broken graphics drivers (going away soon)"
depends on DMAR
---help---
Current Graphics drivers tend to use physical address
for DMA and avoid using DMA APIs. Setting this config
option permits the IOMMU driver to set a unity map for
all the OS-visible memory. Hence the driver can continue
- to use physical addresses for DMA.
+ to use physical addresses for DMA, at least until this
+ option is removed in the 2.6.32 kernel.
config DMAR_FLOPPY_WA
def_bool y
depends on DMAR
---help---
- Floppy disk drivers are know to bypass DMA API calls
+ Floppy disk drivers are known to bypass DMA API calls
thereby failing to work when IOMMU is enabled. This
workaround will setup a 1:1 mapping for the first
- 16M to make floppy (an ISA device) work.
+ 16MiB to make floppy (an ISA device) work.
config INTR_REMAP
bool "Support for Interrupt Remapping (EXPERIMENTAL)"
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 6c327b852e2..430d5b24af7 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -26,6 +26,8 @@ CFLAGS_tsc.o := $(nostackp)
CFLAGS_paravirt.o := $(nostackp)
GCOV_PROFILE_vsyscall_64.o := n
GCOV_PROFILE_hpet.o := n
+GCOV_PROFILE_tsc.o := n
+GCOV_PROFILE_paravirt.o := n
obj-y := process_$(BITS).o signal.o entry_$(BITS).o
obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 47630479b06..1a041bcf506 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -211,11 +211,11 @@ static __init int iommu_setup(char *p)
#ifdef CONFIG_SWIOTLB
if (!strncmp(p, "soft", 4))
swiotlb = 1;
+#endif
if (!strncmp(p, "pt", 2)) {
iommu_pass_through = 1;
return 1;
}
-#endif
gart_parse_options(p);
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index b26626dc517..1014eb4bfc3 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -68,6 +68,10 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
unsigned long flags;
struct resource *root;
int max_root_bus_resources = PCI_BUS_NUM_RESOURCES;
+ u64 start, end;
+
+ if (bus_has_transparent_bridge(info->bus))
+ max_root_bus_resources -= 3;
status = resource_to_addr(acpi_res, &addr);
if (!ACPI_SUCCESS(status))
@@ -84,25 +88,24 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
} else
return AE_OK;
- res = &info->res[info->res_num];
- res->name = info->name;
- res->flags = flags;
- res->start = addr.minimum + addr.translation_offset;
- res->end = res->start + addr.address_length - 1;
- res->child = NULL;
-
- if (bus_has_transparent_bridge(info->bus))
- max_root_bus_resources -= 3;
+ start = addr.minimum + addr.translation_offset;
+ end = start + addr.address_length - 1;
if (info->res_num >= max_root_bus_resources) {
printk(KERN_WARNING "PCI: Failed to allocate 0x%lx-0x%lx "
"from %s for %s due to _CRS returning more than "
- "%d resource descriptors\n", (unsigned long) res->start,
- (unsigned long) res->end, root->name, info->name,
+ "%d resource descriptors\n", (unsigned long) start,
+ (unsigned long) end, root->name, info->name,
max_root_bus_resources);
- info->res_num++;
return AE_OK;
}
+ res = &info->res[info->res_num];
+ res->name = info->name;
+ res->flags = flags;
+ res->start = start;
+ res->end = end;
+ res->child = NULL;
+
if (insert_resource(root, res)) {
printk(KERN_ERR "PCI: Failed to allocate 0x%lx-0x%lx "
"from %s for %s\n", (unsigned long) res->start,
@@ -115,23 +118,6 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
}
static void
-adjust_transparent_bridge_resources(struct pci_bus *bus)
-{
- struct pci_dev *dev;
-
- list_for_each_entry(dev, &bus->devices, bus_list) {
- int i;
- u16 class = dev->class >> 8;
-
- if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent) {
- for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
- dev->subordinate->resource[i] =
- dev->bus->resource[i - 3];
- }
- }
-}
-
-static void
get_current_resources(struct acpi_device *device, int busnum,
int domain, struct pci_bus *bus)
{
@@ -158,8 +144,6 @@ get_current_resources(struct acpi_device *device, int busnum,
info.res_num = 0;
acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
&info);
- if (info.res_num)
- adjust_transparent_bridge_resources(bus);
return;
@@ -222,8 +206,15 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
*/
memcpy(bus->sysdata, sd, sizeof(*sd));
kfree(sd);
- } else
- bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
+ } else {
+ bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
+ if (bus) {
+ if (pci_probe & PCI_USE__CRS)
+ get_current_resources(device, busnum, domain,
+ bus);
+ bus->subordinate = pci_scan_child_bus(bus);
+ }
+ }
if (!bus)
kfree(sd);
@@ -238,8 +229,6 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
#endif
}
- if (bus && (pci_probe & PCI_USE__CRS))
- get_current_resources(device, busnum, domain, bus);
return bus;
}
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index f893d6a6e80..3ffa10df20b 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -100,8 +100,9 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b)
int j;
struct pci_root_info *info;
- /* don't go for it if _CRS is used */
- if (pci_probe & PCI_USE__CRS)
+ /* don't go for it if _CRS is used already */
+ if (b->resource[0] != &ioport_resource ||
+ b->resource[1] != &iomem_resource)
return;
/* if only one root bus, don't need to anything */
@@ -116,6 +117,9 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b)
if (i == pci_root_num)
return;
+ printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
+ b->number);
+
info = &pci_root_info[i];
for (j = 0; j < info->res_num; j++) {
struct resource *res;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-16 00:29:03 +0000