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181 lines
4.4 KiB
181 lines
4.4 KiB
/*
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* Copyright © 2008 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <err.h>
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#include <assert.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include "i915_drm.h"
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#include "drmtest.h"
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#include "intel_chipset.h"
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#include "igt_core.h"
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/**
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* SECTION:intel_chipset
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* @short_description: Feature macros and chipset helpers
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* @title: Chipset
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* @include: igt.h
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*
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* This library mostly provides feature macros which use raw pci device ids. It
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* also provides a few more helper functions to handle pci devices, chipset
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* detection and related issues.
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*/
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/**
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* intel_pch:
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*
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* Global variable to keep track of the pch type. Can either be set manually or
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* detected at runtime with intel_check_pch().
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*/
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enum pch_type intel_pch;
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/**
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* intel_get_pci_device:
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*
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* Looks up the main graphics pci device using libpciaccess.
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*
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* Returns:
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* The pci_device, exits the program on any failures.
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*/
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struct pci_device *
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intel_get_pci_device(void)
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{
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struct pci_device *pci_dev;
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int error;
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error = pci_system_init();
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igt_fail_on_f(error != 0,
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"Couldn't initialize PCI system\n");
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/* Grab the graphics card. Try the canonical slot first, then
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* walk the entire PCI bus for a matching device. */
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pci_dev = pci_device_find_by_slot(0, 0, 2, 0);
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if (pci_dev == NULL || pci_dev->vendor_id != 0x8086) {
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struct pci_device_iterator *iter;
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struct pci_id_match match;
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match.vendor_id = 0x8086; /* Intel */
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match.device_id = PCI_MATCH_ANY;
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match.subvendor_id = PCI_MATCH_ANY;
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match.subdevice_id = PCI_MATCH_ANY;
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match.device_class = 0x3 << 16;
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match.device_class_mask = 0xff << 16;
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match.match_data = 0;
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iter = pci_id_match_iterator_create(&match);
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pci_dev = pci_device_next(iter);
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pci_iterator_destroy(iter);
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}
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igt_require_f(pci_dev, "Couldn't find Intel graphics card\n");
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error = pci_device_probe(pci_dev);
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igt_fail_on_f(error != 0,
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"Couldn't probe graphics card\n");
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if (pci_dev->vendor_id != 0x8086)
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errx(1, "Graphics card is non-intel");
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return pci_dev;
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}
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/**
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* intel_get_drm_devid:
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* @fd: open i915 drm file descriptor
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*
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* Queries the kernel for the pci device id corresponding to the drm file
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* descriptor.
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*
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* Returns:
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* The devid, exits the program on any failures.
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*/
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uint32_t
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intel_get_drm_devid(int fd)
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{
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struct drm_i915_getparam gp;
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const char *override;
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int devid = 0;
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igt_assert(is_i915_device(fd));
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override = getenv("INTEL_DEVID_OVERRIDE");
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if (override)
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return strtol(override, NULL, 0);
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memset(&gp, 0, sizeof(gp));
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gp.param = I915_PARAM_CHIPSET_ID;
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gp.value = &devid;
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ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp));
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return devid;
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}
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/**
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* intel_check_pch:
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*
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* Detects the PCH chipset type of the running systems and fills in the results
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* into the global #intel_pch variable.
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*/
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void
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intel_check_pch(void)
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{
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struct pci_device *pch_dev;
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pch_dev = pci_device_find_by_slot(0, 0, 31, 0);
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if (pch_dev == NULL)
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return;
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if (pch_dev->vendor_id != 0x8086)
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return;
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switch (pch_dev->device_id & 0xff00) {
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case 0x3b00:
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intel_pch = PCH_IBX;
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break;
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case 0x1c00:
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case 0x1e00:
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intel_pch = PCH_CPT;
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break;
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case 0x8c00:
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case 0x9c00:
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intel_pch = PCH_LPT;
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break;
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default:
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intel_pch = PCH_NONE;
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return;
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}
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}
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