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/*
* 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 <err.h>
#include <unistd.h>
#include "reg_dumper.h"
#include "../i810_reg.h"
#define INGTT(offset) (*(volatile uint32_t *)(gtt + (offset) / (KB(4) / 4)))
int main(int argc, char **argv)
{
I830Rec i830;
I830Ptr pI830 = &i830;
int start, aper_size;
unsigned char *gtt;
intel_i830rec_init(pI830);
if (!IS_I9XX(pI830)) {
printf("Unsupported chipset for gtt dumper\n");
exit(1);
}
if (IS_G4X(pI830) || IS_IGDNG(pI830))
gtt = (unsigned char *)(pI830->mmio + MB(2));
else if (IS_I965G(pI830))
gtt = (unsigned char *)(pI830->mmio + KB(512));
else {
/* 915/945 chips has GTT range in bar 3*/
int err = 0;
err = pci_device_map_range (pI830->PciInfo,
pI830->PciInfo->regions[3].base_addr,
pI830->PciInfo->regions[3].size,
PCI_DEV_MAP_FLAG_WRITABLE,
(void **)>t);
if (err != 0) {
fprintf(stderr, "mapping GTT bar failed\n");
exit(1);
}
}
aper_size = pI830->PciInfo->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;
}
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