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authorBen Widawsky <benjamin.widawsky@intel.com>2013-09-01 12:34:36 -0700
committerBen Widawsky <benjamin.widawsky@intel.com>2013-09-03 15:31:14 -0700
commit612252f3f9aaa67848f3f74b8a7237eb1fa72159 (patch)
tree6030bd706c186d4c81bc9a8b9dc941560c0e43c1
parentc6f9bdc66f9ed82c82c1e77bb8bbadc250648c6e (diff)
intel_gtt: Raw PTE dumper mode
./tools/intel_gtt -d | head GTT offset | PTEs -------------------------------------------------------- 0x000000 | 0xe4005015 0xe2854015 0xe283e015 0xe283f015 0x004000 | 0xe28ba015 0xe28bb015 0xe28b6015 0xe28b7015 0x008000 | 0xe2828015 0xe2829015 0xe282a015 0xe282b015 0x00c000 | 0xe2928015 0xe2929015 0xe292a015 0xe292b015 0x010000 | 0xe2918015 0xe2919015 0xe291a015 0xe291b015 0x014000 | 0xe291c015 0xe291d015 0xe291e015 0xe291f015 0x018000 | 0xe2920015 0xe2921015 0xe2922015 0xe2923015 0x01c000 | 0xe2924015 0xe2925015 0xe2926015 0xe2927015 Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
-rw-r--r--tools/intel_gtt.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/intel_gtt.c b/tools/intel_gtt.c
index d13e29dd..1f1b8820 100644
--- a/tools/intel_gtt.c
+++ b/tools/intel_gtt.c
@@ -71,6 +71,25 @@ static uint64_t get_phys(uint32_t pt_offset)
return (phys | pae) & ~0xfff;
}
+static void pte_dump(int size, uint32_t offset) {
+ int start;
+ /* Want to print 4 ptes at a time (4b PTE assumed). */
+ if (size % 16)
+ size = (size + 16) & ~0xffff;
+
+
+ printf("GTT offset | PTEs\n");
+ printf("--------------------------------------------------------\n");
+ for (start = 0; start < size; start += KB(16)) {
+ printf(" 0x%06x | 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ start,
+ INGTT(start + 0x0),
+ INGTT(start + 0x1000),
+ INGTT(start + 0x2000),
+ INGTT(start + 0x3000));
+ }
+}
+
int main(int argc, char **argv)
{
struct pci_device *pci_dev;
@@ -118,6 +137,10 @@ int main(int argc, char **argv)
}
aper_size = pci_dev->regions[2].size;
+ if (argc > 1 && !strncmp("-d", argv[1], 2)) {
+ pte_dump(aper_size, 0);
+ return 0;
+ }
for (start = 0; start < aper_size; start += KB(4)) {
uint64_t start_phys = get_phys(start);