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tools/intel_gtt: Add support for gen8

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Add 64bit ptes and 8MB mmiobar offset for gen8

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Acked-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
This commit is contained in:
Mika Kuoppala 2015-02-13 19:04:49 +02:00
parent 5e4fc0c48c
commit 043f586958
1 changed files with 63 additions and 16 deletions
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79
tools/intel_gtt.c
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@ -42,11 +42,31 @@
unsigned char *gtt;
uint32_t devid;
#define INGTT(offset) (*(volatile uint32_t *)(gtt + (offset) / (KB(4) / 4)))
typedef uint32_t gen6_gtt_pte_t;
typedef uint64_t gen8_gtt_pte_t;
static gen6_gtt_pte_t gen6_gtt_pte(const unsigned i)
{
return *((volatile gen6_gtt_pte_t *)(gtt) + i);
}
static gen8_gtt_pte_t gen8_gtt_pte(const unsigned i)
{
return *((volatile gen8_gtt_pte_t *)(gtt) + i);
}
static uint64_t ingtt(const unsigned offset)
{
if (intel_gen(devid) < 8)
return gen6_gtt_pte(offset/KB(4));
return gen8_gtt_pte(offset/KB(4));
}
static uint64_t get_phys(uint32_t pt_offset)
{
uint64_t pae = 0;
uint64_t phys = INGTT(pt_offset);
uint64_t phys = ingtt(pt_offset);
if (intel_gen(devid) < 4 && !IS_G33(devid))
return phys & ~0xfff;
@ -64,6 +84,10 @@ static uint64_t get_phys(uint32_t pt_offset)
else
pae = (phys & 0xff0) << 28;
break;
case 8:
case 9:
phys = phys & 0x7ffffff000;
break;
default:
fprintf(stderr, "Unsupported platform\n");
exit(-1);
@ -73,28 +97,49 @@ static uint64_t get_phys(uint32_t pt_offset)
}
static void pte_dump(int size, uint32_t offset) {
int start;
int pte_size;
int entries;
unsigned int i;
/* Want to print 4 ptes at a time (4b PTE assumed). */
if (size % 16)
size = (size + 16) & ~0xffff;
if (intel_gen(devid) < 8)
pte_size = 4;
else
pte_size = 8;
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));
entries = size / pte_size;
printf("GTT offset | %d PTEs (%d MB)\n", entries,
entries * 4096 / 1024 / 1024);
printf("----------------------------------------------------------\n");
for (i = 0; i < entries; i += 4) {
if (intel_gen(devid) < 8) {
printf(" 0x%08x | 0x%08x 0x%08x 0x%08x 0x%08x\n",
KB(4 * i),
gen6_gtt_pte(i + 0),
gen6_gtt_pte(i + 1),
gen6_gtt_pte(i + 2),
gen6_gtt_pte(i + 3) );
} else {
printf(" 0x%08x | 0x%016" PRIx64 " 0x%016" PRIx64
" 0x%016" PRIx64 " 0x%016" PRIx64 " \n",
KB(4 * i),
gen8_gtt_pte(i + 0),
gen8_gtt_pte(i + 1),
gen8_gtt_pte(i + 2),
gen8_gtt_pte(i + 3) );
}
}
}
int main(int argc, char **argv)
{
struct pci_device *pci_dev;
int start, gtt_size;
unsigned int start, gtt_size;
int flag[] = {
PCI_DEV_MAP_FLAG_WRITE_COMBINE,
PCI_DEV_MAP_FLAG_WRITABLE,
@ -119,11 +164,13 @@ int main(int argc, char **argv)
(void **)&gtt) == 0)
break;
} else {
int offset;
unsigned offset;
offset = pci_dev->regions[0].size / 2;
if (IS_GEN4(devid))
offset = KB(512);
else
offset = MB(2);
if (pci_device_map_range(pci_dev,
pci_dev->regions[0].base_addr + offset,
offset,