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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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <err.h>
#include <assert.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include "i915_drm.h"
#include "drmtest.h"
#include "intel_chipset.h"
#include "igt_core.h"
/**
* SECTION:intel_chipset
* @short_description: Feature macros and chipset helpers
* @title: Chipset
* @include: igt.h
*
* This library mostly provides feature macros which use raw pci device ids. It
* also provides a few more helper functions to handle pci devices, chipset
* detection and related issues.
*/
/**
* intel_pch:
*
* Global variable to keep track of the pch type. Can either be set manually or
* detected at runtime with intel_check_pch().
*/
enum pch_type intel_pch;
/**
* intel_get_drm_devid:
* @fd: open i915 drm file descriptor
*
* Queries the kernel for the pci device id corresponding to the drm file
* descriptor.
*
* Returns:
* The devid, exits the program on any failures.
*/
uint32_t
intel_get_drm_devid(int fd)
{
struct drm_i915_getparam gp;
const char *override;
int devid = 0;
igt_assert(is_i915_device(fd));
override = getenv("INTEL_DEVID_OVERRIDE");
if (override)
return strtol(override, NULL, 0);
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_CHIPSET_ID;
gp.value = &devid;
ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp));
return devid;
}
/**
* intel_check_pch:
*
* Detects the PCH chipset type of the running systems and fills in the results
* into the global #intel_pch variable.
*/
void
intel_check_pch(void)
{
struct pci_device *pch_dev;
pch_dev = pci_device_find_by_slot(0, 0, 31, 0);
if (pch_dev == NULL)
return;
if (pch_dev->vendor_id != 0x8086)
return;
switch (pch_dev->device_id & 0xff00) {
case 0x3b00:
intel_pch = PCH_IBX;
break;
case 0x1c00:
case 0x1e00:
intel_pch = PCH_CPT;
break;
case 0x8c00:
case 0x9c00:
intel_pch = PCH_LPT;
break;
default:
intel_pch = PCH_NONE;
return;
}
}
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