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#include <pciaccess.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include "igfx.h"
#include "i915_pciids.h"
static const struct igfx_info generic_info = {
.gen = -1,
};
static const struct igfx_info i81x_info = {
.gen = 010,
};
static const struct igfx_info i830_info = {
.gen = 020,
};
static const struct igfx_info i845_info = {
.gen = 020,
};
static const struct igfx_info i855_info = {
.gen = 021,
};
static const struct igfx_info i865_info = {
.gen = 022,
};
static const struct igfx_info i915_info = {
.gen = 030,
};
static const struct igfx_info i945_info = {
.gen = 031,
};
static const struct igfx_info g33_info = {
.gen = 033,
};
static const struct igfx_info i965_info = {
.gen = 040,
};
static const struct igfx_info g4x_info = {
.gen = 045,
};
static const struct igfx_info ironlake_info = {
.gen = 050,
};
static const struct igfx_info sandybridge_info = {
.gen = 060,
};
static const struct igfx_info ivybridge_info = {
.gen = 070,
};
static const struct igfx_info valleyview_info = {
.gen = 071,
};
static const struct igfx_info haswell_info = {
.gen = 075,
};
static const struct pci_id_match match[] = {
#if 0
INTEL_VGA_DEVICE(PCI_CHIP_I810, &i81x_info),
INTEL_VGA_DEVICE(PCI_CHIP_I810_DC100, &i81x_info),
INTEL_VGA_DEVICE(PCI_CHIP_I810_E, &i81x_info),
INTEL_VGA_DEVICE(PCI_CHIP_I815, &i81x_info),
#endif
INTEL_I830_IDS(&i830_info),
INTEL_I845G_IDS(&i830_info),
INTEL_I85X_IDS(&i855_info),
INTEL_I865G_IDS(&i865_info),
INTEL_I915G_IDS(&i915_info),
INTEL_I915GM_IDS(&i915_info),
INTEL_I945G_IDS(&i945_info),
INTEL_I945GM_IDS(&i945_info),
INTEL_G33_IDS(&g33_info),
INTEL_PINEVIEW_IDS(&g33_info),
INTEL_I965G_IDS(&i965_info),
INTEL_I965GM_IDS(&i965_info),
INTEL_G45_IDS(&g4x_info),
INTEL_GM45_IDS(&g4x_info),
INTEL_IRONLAKE_D_IDS(&ironlake_info),
INTEL_IRONLAKE_M_IDS(&ironlake_info),
INTEL_SNB_D_IDS(&sandybridge_info),
INTEL_SNB_M_IDS(&sandybridge_info),
INTEL_IVB_D_IDS(&ivybridge_info),
INTEL_IVB_M_IDS(&ivybridge_info),
INTEL_HSW_D_IDS(&haswell_info),
INTEL_HSW_M_IDS(&haswell_info),
INTEL_VLV_D_IDS(&valleyview_info),
INTEL_VLV_M_IDS(&valleyview_info),
INTEL_VGA_DEVICE(PCI_MATCH_ANY, &generic_info),
{ 0, 0, 0 },
};
struct pci_device *igfx_get(void)
{
struct pci_device *dev;
if (pci_system_init())
return 0;
dev = pci_device_find_by_slot(0, 0, 2, 0);
if (dev == NULL || dev->vendor_id != 0x8086) {
struct pci_device_iterator *iter;
iter = pci_id_match_iterator_create(match);
if (!iter)
return 0;
dev = pci_device_next(iter);
pci_iterator_destroy(iter);
}
return dev;
}
const struct igfx_info *igfx_get_info(struct pci_device *dev)
{
int i;
if (!dev)
return 0;
for (i = 0; match[i].device_id != PCI_MATCH_ANY; i++)
if (dev->device_id == match[i].device_id)
return (const struct igfx_info *)match[i].match_data;
return &generic_info;
}
static int forcewake = -1;
static void
igfx_forcewake(void)
{
char buf[1024];
const char *path[] = {
"/sys/kernel/debug/dri/",
"/debug/dri/",
0,
};
int i, j;
for (j = 0; path[j]; j++) {
struct stat st;
if (stat(path[j], &st))
continue;
for (i = 0; i < 16; i++) {
snprintf(buf, sizeof(buf),
"%s/%i/i915_forcewake_user",
path[j], i);
forcewake = open(buf, 0);
if (forcewake != -1)
return;
}
}
}
void *igfx_get_mmio(struct pci_device *dev)
{
const struct igfx_info *info;
int mmio_bar, mmio_size;
void *mmio;
info = igfx_get_info(dev);
if (info->gen >> 3 == 2)
mmio_bar = 1;
else
mmio_bar = 0;
if (info->gen < 030)
mmio_size = 512*1024;
else if (info->gen < 050)
mmio_size = 512*1024;
else
mmio_size = 2*1024*1024;
if (pci_device_probe(dev))
return 0;
if (pci_device_map_range(dev,
dev->regions[mmio_bar].base_addr,
mmio_size,
PCI_DEV_MAP_FLAG_WRITABLE,
&mmio))
return 0;
if (info->gen >= 060)
igfx_forcewake();
return mmio;
}
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