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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] VT-d: Improve page table debug output
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1211618105 -3600
# Node ID 36bbcc6baadf40b93372c39a387109b65dde20ad
# Parent 5590509941b1cc12a5408d773532d9aa21e93e8e
VT-d: Improve page table debug output
Ignore 'current' domain when dumping VT-d page tables. Also add page
type summary for domain pages output.
Signed-off-by: Espen Skoglund <espen.skoglund@xxxxxxxxxxxxx>
---
xen/drivers/passthrough/vtd/extern.h | 3
xen/drivers/passthrough/vtd/iommu.c | 10 +
xen/drivers/passthrough/vtd/utils.c | 178 ++++++++++++++++-------------------
3 files changed, 90 insertions(+), 101 deletions(-)
diff -r 5590509941b1 -r 36bbcc6baadf xen/drivers/passthrough/vtd/extern.h
--- a/xen/drivers/passthrough/vtd/extern.h Sat May 24 09:27:48 2008 +0100
+++ b/xen/drivers/passthrough/vtd/extern.h Sat May 24 09:35:05 2008 +0100
@@ -27,8 +27,7 @@ extern struct ir_ctrl *ir_ctrl;
extern struct ir_ctrl *ir_ctrl;
void print_iommu_regs(struct acpi_drhd_unit *drhd);
-void print_vtd_entries(struct domain *d, struct iommu *iommu,
- int bus, int devfn, unsigned long gmfn);
+void print_vtd_entries(struct iommu *iommu, int bus, int devfn, u64 gmfn);
void pdev_flr(u8 bus, u8 devfn);
int qinval_setup(struct iommu *iommu);
diff -r 5590509941b1 -r 36bbcc6baadf xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c Sat May 24 09:27:48 2008 +0100
+++ b/xen/drivers/passthrough/vtd/iommu.c Sat May 24 09:35:05 2008 +0100
@@ -777,16 +777,17 @@ int iommu_disable_translation(struct iom
static struct iommu *vector_to_iommu[NR_VECTORS];
static int iommu_page_fault_do_one(struct iommu *iommu, int type,
- u8 fault_reason, u16 source_id, u32 addr)
+ u8 fault_reason, u16 source_id, u64 addr)
{
dprintk(XENLOG_WARNING VTDPREFIX,
- "iommu_fault:%s: %x:%x.%x addr %x REASON %x iommu->reg = %p\n",
+ "iommu_fault:%s: %x:%x.%x addr %"PRIx64" REASON %x "
+ "iommu->reg = %p\n",
(type ? "DMA Read" : "DMA Write"), (source_id >> 8),
PCI_SLOT(source_id & 0xFF), PCI_FUNC(source_id & 0xFF), addr,
fault_reason, iommu->reg);
if ( fault_reason < 0x20 )
- print_vtd_entries(current->domain, iommu, (source_id >> 8),
+ print_vtd_entries(iommu, (source_id >> 8),
(source_id & 0xff), (addr >> PAGE_SHIFT));
return 0;
@@ -844,7 +845,8 @@ static void iommu_page_fault(int vector,
{
u8 fault_reason;
u16 source_id;
- u32 guest_addr, data;
+ u32 data;
+ u64 guest_addr;
int type;
/* highest 32 bits */
diff -r 5590509941b1 -r 36bbcc6baadf xen/drivers/passthrough/vtd/utils.c
--- a/xen/drivers/passthrough/vtd/utils.c Sat May 24 09:27:48 2008 +0100
+++ b/xen/drivers/passthrough/vtd/utils.c Sat May 24 09:35:05 2008 +0100
@@ -213,109 +213,97 @@ u32 get_level_index(unsigned long gmfn,
return gmfn & LEVEL_MASK;
}
-void print_vtd_entries(
- struct domain *d,
- struct iommu *iommu,
- int bus, int devfn,
- unsigned long gmfn)
-{
- struct hvm_iommu *hd = domain_hvm_iommu(d);
- struct acpi_drhd_unit *drhd;
+void print_vtd_entries(struct iommu *iommu, int bus, int devfn, u64 gmfn)
+{
struct context_entry *ctxt_entry;
struct root_entry *root_entry;
struct dma_pte pte;
u64 *l;
- u32 l_index;
- u32 i = 0;
- int level = agaw_to_level(hd->agaw);
-
- printk("print_vtd_entries: domain_id = %x bdf = %x:%x:%x gmfn = %lx\n",
- d->domain_id, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), gmfn);
-
- if ( hd->pgd_maddr == 0 )
- {
- printk(" hd->pgd_maddr == 0\n");
- return;
- }
- printk(" hd->pgd_maddr = %"PRIx64"\n", hd->pgd_maddr);
-
- for_each_drhd_unit ( drhd )
- {
- printk("---- print_vtd_entries %d ----\n", i++);
-
- if ( iommu->root_maddr == 0 )
- {
- printk(" iommu->root_maddr = 0\n");
- continue;
- }
-
- root_entry =
- (struct root_entry *)map_vtd_domain_page(iommu->root_maddr);
+ u32 l_index, level;
+
+ printk("print_vtd_entries: iommu = %p bdf = %x:%x:%x gmfn = %"PRIx64"\n",
+ iommu, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), gmfn);
+
+ if ( iommu->root_maddr == 0 )
+ {
+ printk(" iommu->root_maddr = 0\n");
+ return;
+ }
+
+ root_entry = (struct root_entry *)map_vtd_domain_page(iommu->root_maddr);
- printk(" root_entry = %p\n", root_entry);
- printk(" root_entry[%x] = %"PRIx64"\n", bus, root_entry[bus].val);
- if ( !root_present(root_entry[bus]) )
- {
- unmap_vtd_domain_page(root_entry);
- printk(" root_entry[%x] not present\n", bus);
- continue;
- }
-
- ctxt_entry =
- (struct context_entry *)map_vtd_domain_page(root_entry[bus].val);
- if ( ctxt_entry == NULL )
- {
- unmap_vtd_domain_page(root_entry);
- printk(" ctxt_entry == NULL\n");
- continue;
- }
-
- printk(" context = %p\n", ctxt_entry);
- printk(" context[%x] = %"PRIx64" %"PRIx64"\n",
- devfn, ctxt_entry[devfn].hi, ctxt_entry[devfn].lo);
- if ( !context_present(ctxt_entry[devfn]) )
+ printk(" root_entry = %p\n", root_entry);
+ printk(" root_entry[%x] = %"PRIx64"\n", bus, root_entry[bus].val);
+ if ( !root_present(root_entry[bus]) )
+ {
+ unmap_vtd_domain_page(root_entry);
+ printk(" root_entry[%x] not present\n", bus);
+ return;
+ }
+
+ ctxt_entry =
+ (struct context_entry *)map_vtd_domain_page(root_entry[bus].val);
+ if ( ctxt_entry == NULL )
+ {
+ unmap_vtd_domain_page(root_entry);
+ printk(" ctxt_entry == NULL\n");
+ return;
+ }
+
+ printk(" context = %p\n", ctxt_entry);
+ printk(" context[%x] = %"PRIx64"_%"PRIx64"\n",
+ devfn, ctxt_entry[devfn].hi, ctxt_entry[devfn].lo);
+ if ( !context_present(ctxt_entry[devfn]) )
+ {
+ unmap_vtd_domain_page(ctxt_entry);
+ unmap_vtd_domain_page(root_entry);
+ printk(" ctxt_entry[%x] not present\n", devfn);
+ return;
+ }
+
+ level = agaw_to_level(context_address_width(ctxt_entry[devfn]));
+ if ( level != VTD_PAGE_TABLE_LEVEL_3 &&
+ level != VTD_PAGE_TABLE_LEVEL_4)
+ {
+ unmap_vtd_domain_page(ctxt_entry);
+ unmap_vtd_domain_page(root_entry);
+ printk("Unsupported VTD page table level (%d)!\n", level);
+ }
+
+ l = maddr_to_virt(ctxt_entry[devfn].lo);
+ do
+ {
+ l = (u64*)(((unsigned long)l >> PAGE_SHIFT_4K) << PAGE_SHIFT_4K);
+ printk(" l%d = %p\n", level, l);
+ if ( l == NULL )
{
unmap_vtd_domain_page(ctxt_entry);
unmap_vtd_domain_page(root_entry);
- printk(" ctxt_entry[%x] not present\n", devfn);
- continue;
- }
-
- if ( level != VTD_PAGE_TABLE_LEVEL_3 &&
- level != VTD_PAGE_TABLE_LEVEL_4)
+ printk(" l%d == NULL\n", level);
+ break;
+ }
+ l_index = get_level_index(gmfn, level);
+ printk(" l%d_index = %x\n", level, l_index);
+ printk(" l%d[%x] = %"PRIx64"\n", level, l_index, l[l_index]);
+
+ pte.val = l[l_index];
+ if ( !dma_pte_present(pte) )
{
unmap_vtd_domain_page(ctxt_entry);
unmap_vtd_domain_page(root_entry);
- printk("Unsupported VTD page table level (%d)!\n", level);
- continue;
- }
-
- l = maddr_to_virt(ctxt_entry[devfn].lo);
- do
- {
- l = (u64*)(((unsigned long)l >> PAGE_SHIFT_4K) << PAGE_SHIFT_4K);
- printk(" l%d = %p\n", level, l);
- if ( l == NULL )
- {
- unmap_vtd_domain_page(ctxt_entry);
- unmap_vtd_domain_page(root_entry);
- printk(" l%d == NULL\n", level);
- break;
- }
- l_index = get_level_index(gmfn, level);
- printk(" l%d_index = %x\n", level, l_index);
- printk(" l%d[%x] = %"PRIx64"\n", level, l_index, l[l_index]);
-
- pte.val = l[l_index];
- if ( !dma_pte_present(pte) )
- {
- unmap_vtd_domain_page(ctxt_entry);
- unmap_vtd_domain_page(root_entry);
- printk(" l%d[%x] not present\n", level, l_index);
- break;
- }
-
- l = maddr_to_virt(l[l_index]);
- } while ( --level );
- }
-}
+ printk(" l%d[%x] not present\n", level, l_index);
+ break;
+ }
+
+ l = maddr_to_virt(l[l_index]);
+ } while ( --level );
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
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