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Diffstat (limited to 'tools/intel_gtt.c')
| -rw-r--r-- | tools/intel_gtt.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/tools/intel_gtt.c b/tools/intel_gtt.c new file mode 100644 index 00000000..05d36d71 --- /dev/null +++ b/tools/intel_gtt.c @@ -0,0 +1,134 @@ +/* + * Copyright © 2008 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <pciaccess.h> +#include <unistd.h> + +#include "intel_gpu_tools.h" + +#define INGTT(offset) (*(volatile uint32_t *)(gtt + (offset) / (KB(4) / 4))) + +#define KB(x) ((x) * 1024) +#define MB(x) ((x) * 1024 * 1024) + +int main(int argc, char **argv) +{ + struct pci_device *pci_dev; + int start, aper_size; + unsigned char *gtt; + uint32_t devid; + int flag[] = { + PCI_DEV_MAP_FLAG_WRITE_COMBINE, + PCI_DEV_MAP_FLAG_WRITABLE, + 0 + }, f; + + pci_dev = intel_get_pci_device(); + devid = pci_dev->device_id; + + if (IS_GEN2(devid)) { + printf("Unsupported chipset for gtt dumper\n"); + exit(1); + } + + for (f = 0; flag[f] != 0; f++) { + if (IS_GEN3(devid)) { + /* 915/945 chips has GTT range in bar 3 */ + if (pci_device_map_range(pci_dev, + pci_dev->regions[3].base_addr, + pci_dev->regions[3].size, + flag[f], + (void **)>t) == 0) + break; + } else { + int offset; + if (IS_G4X(devid) || IS_GEN5(devid)) + offset = MB(2); + else + offset = KB(512); + if (pci_device_map_range(pci_dev, + pci_dev->regions[0].base_addr + offset, + offset, + flag[f], + (void **)>t) == 0) + break; + } + } + if (flag[f] == 0) { + printf("Failed to map gtt\n"); + exit(1); + } + + aper_size = pci_dev->regions[2].size; + + for (start = 0; start < aper_size; start += KB(4)) { + uint32_t start_pte = INGTT(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)) { + uint32_t end_pte = INGTT(end); + if (end_pte == start_pte + (end - start)) + linear_length++; + else + break; + } + if (linear_length > 0) { + printf("0x%08x - 0x%08x: linear from " + "0x%08x to 0x%08x\n", + start, end - KB(4), + start_pte, start_pte + (end - start) - KB(4)); + start = end - KB(4); + continue; + } + + /* Check if it's a constant sequence */ + for (end = start + KB(4); end < aper_size; end += KB(4)) { + uint32_t end_pte = INGTT(end); + if (end_pte == start_pte) + constant_length++; + else + break; + } + if (constant_length > 0) { + printf("0x%08x - 0x%08x: constant 0x%08x\n", + start, end - KB(4), start_pte); + start = end - KB(4); + continue; + } + + printf("0x%08x: 0x%08x\n", start, start_pte); + } + + return 0; +} |