intel_gtt: Dump the whole GTT

The tool formerly only dumped the aperture size, which is fine, but not
everything interesting. Most of the patch is just the variable rename.
The real work happens with using the BAR0 size divided by 2 instead of
the BAR2 size.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

diff --git a/tools/intel_gtt.c b/tools/intel_gtt.c
index 1f1b882..a21c26a 100644 (file)
--- a/tools/intel_gtt.c
+++ b/tools/intel_gtt.c
@@ -93,7 +93,7 @@ static void pte_dump(int size, uint32_t offset) {
 int main(int argc, char **argv)
 {
        struct pci_device *pci_dev;
-       int start, aper_size;
+       int start, gtt_size;
        int flag[] = {
                PCI_DEV_MAP_FLAG_WRITE_COMBINE,
                PCI_DEV_MAP_FLAG_WRITABLE,
@@ -136,20 +136,20 @@ int main(int argc, char **argv)
                exit(1);
        }
 
-       aper_size = pci_dev->regions[2].size;
+       gtt_size = pci_dev->regions[0].size / 2;
        if (argc > 1 && !strncmp("-d", argv[1], 2)) {
-               pte_dump(aper_size, 0);
+               pte_dump(gtt_size, 0);
                return 0;
        }
 
-       for (start = 0; start < aper_size; start += KB(4)) {
+       for (start = 0; start < gtt_size; start += KB(4)) {
                uint64_t start_phys = get_phys(start);
                uint32_t end;
                int constant_length = 0;
                int linear_length = 0;
 
                /* Check if it's a linear sequence */
-               for (end = start + KB(4); end < aper_size; end += KB(4)) {
+               for (end = start + KB(4); end < gtt_size; end += KB(4)) {
                        uint64_t end_phys = get_phys(end);
                        if (end_phys == start_phys + (end - start))
                                linear_length++;
@@ -166,7 +166,7 @@ int main(int argc, char **argv)
                }
 
                /* Check if it's a constant sequence */
-               for (end = start + KB(4); end < aper_size; end += KB(4)) {
+               for (end = start + KB(4); end < gtt_size; end += KB(4)) {
                        uint64_t end_phys = get_phys(end);
                        if (end_phys == start_phys)
                                constant_length++;