# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1217499263 -3600
# Node ID 05391ca07588c45f5c8dd16c2a470b0d615767b8
# Parent 482c16b55c28cd8dfc7b6dc93d0987f0b7bed42d
Remove vtd_hw_check().
Since we have separate VT-d page tables, actually we don't need the
checking.
Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>
---
xen/drivers/passthrough/vtd/dmar.c | 3 ---
xen/drivers/passthrough/vtd/utils.c | 30 ------------------------------
2 files changed, 33 deletions(-)
diff -r 482c16b55c28 -r 05391ca07588 xen/drivers/passthrough/vtd/dmar.c
--- a/xen/drivers/passthrough/vtd/dmar.c Thu Jul 31 11:13:30 2008 +0100
+++ b/xen/drivers/passthrough/vtd/dmar.c Thu Jul 31 11:14:23 2008 +0100
@@ -483,9 +483,6 @@ int acpi_dmar_init(void)
if ( !iommu_enabled )
goto fail;
- if ( (rc = vtd_hw_check()) != 0 )
- goto fail;
-
acpi_table_parse(ACPI_SIG_DMAR, acpi_parse_dmar);
rc = -ENODEV;
diff -r 482c16b55c28 -r 05391ca07588 xen/drivers/passthrough/vtd/utils.c
--- a/xen/drivers/passthrough/vtd/utils.c Thu Jul 31 11:13:30 2008 +0100
+++ b/xen/drivers/passthrough/vtd/utils.c Thu Jul 31 11:14:23 2008 +0100
@@ -29,41 +29,11 @@
#include "vtd.h"
#include "extern.h"
-#define INTEL 0x8086
-#define SEABURG 0x4000
-#define C_STEP 2
-
int is_usb_device(u8 bus, u8 devfn)
{
u16 class = pci_conf_read16(bus, PCI_SLOT(devfn), PCI_FUNC(devfn),
PCI_CLASS_DEVICE);
return (class == 0xc03);
-}
-
-int vtd_hw_check(void)
-{
- u16 vendor, device;
- u8 revision, stepping;
-
- vendor = pci_conf_read16(0, 0, 0, PCI_VENDOR_ID);
- device = pci_conf_read16(0, 0, 0, PCI_DEVICE_ID);
- revision = pci_conf_read8(0, 0, 0, PCI_REVISION_ID);
- stepping = revision & 0xf;
-
- if ( (vendor == INTEL) && (device == SEABURG) )
- {
- if ( stepping < C_STEP )
- {
- dprintk(XENLOG_WARNING VTDPREFIX,
- "*** VT-d disabled - pre C0-step Seaburg found\n");
- dprintk(XENLOG_WARNING VTDPREFIX,
- "*** vendor = %x device = %x revision = %x\n",
- vendor, device, revision);
- return -ENODEV;
- }
- }
-
- return 0;
}
/* Disable vt-d protected memory registers. */
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