| /* |
| * Copyright © 2007, 2011, 2013 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> |
| * Daniel Vetter <daniel.vetter@ffwll.ch> |
| * |
| */ |
| |
| #ifndef ANDROID |
| #define _GNU_SOURCE |
| #else |
| #include <libgen.h> |
| #endif |
| #include <stdio.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <signal.h> |
| #include <pciaccess.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <sys/wait.h> |
| #include <sys/types.h> |
| #include <sys/syscall.h> |
| #include <sys/utsname.h> |
| #include <termios.h> |
| |
| #include "drmtest.h" |
| #include "i915_drm.h" |
| #include "intel_chipset.h" |
| #include "intel_io.h" |
| #include "igt_gt.h" |
| #include "igt_debugfs.h" |
| #include "version.h" |
| #include "config.h" |
| #include "intel_reg.h" |
| #include "ioctl_wrappers.h" |
| |
| /** |
| * SECTION:drmtest |
| * @short_description: Base library for drm tests and tools |
| * @title: drmtest |
| * @include: igt.h |
| * |
| * This library contains the basic support for writing tests, with the most |
| * important part being the helper function to open drm device nodes. |
| * |
| * But there's also a bit of other assorted stuff here. |
| * |
| * Note that this library's header pulls in the [i-g-t core](intel-gpu-tools-i-g-t-core.html) |
| * and [batchbuffer](intel-gpu-tools-intel-batchbuffer.html) libraries as dependencies. |
| */ |
| |
| uint16_t __drm_device_id; |
| |
| static int __get_drm_device_name(int fd, char *name) |
| { |
| drm_version_t version; |
| |
| memset(&version, 0, sizeof(version)); |
| version.name_len = 4; |
| version.name = name; |
| |
| if (!drmIoctl(fd, DRM_IOCTL_VERSION, &version)){ |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| static bool is_i915_device(int fd) |
| { |
| int ret; |
| char name[5] = ""; |
| |
| ret = __get_drm_device_name(fd, name); |
| |
| return !ret && strcmp("i915", name) == 0; |
| } |
| |
| static bool is_vc4_device(int fd) |
| { |
| int ret; |
| char name[5] = ""; |
| |
| ret = __get_drm_device_name(fd, name); |
| |
| return !ret && strcmp("vc4", name) == 0; |
| } |
| |
| static bool is_intel(int fd) |
| { |
| struct drm_i915_getparam gp; |
| int devid = 0; |
| |
| memset(&gp, 0, sizeof(gp)); |
| gp.param = I915_PARAM_CHIPSET_ID; |
| gp.value = &devid; |
| |
| if (ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp))) |
| return false; |
| |
| if (!IS_INTEL(devid)) |
| return false; |
| |
| __drm_device_id = devid; |
| return true; |
| } |
| |
| #define LOCAL_I915_EXEC_VEBOX (4 << 0) |
| /** |
| * gem_quiescent_gpu: |
| * @fd: open i915 drm file descriptor |
| * |
| * Ensure the gpu is idle by launching a nop execbuf and stalling for it. This |
| * is automatically run when opening a drm device node and is also installed as |
| * an exit handler to have the best assurance that the test is run in a pristine |
| * and controlled environment. |
| * |
| * This function simply allows tests to make additional calls in-between, if so |
| * desired. |
| */ |
| void gem_quiescent_gpu(int fd) |
| { |
| uint32_t bbe = MI_BATCH_BUFFER_END; |
| struct drm_i915_gem_execbuffer2 execbuf; |
| struct drm_i915_gem_exec_object2 obj; |
| unsigned ring; |
| |
| memset(&obj, 0, sizeof(obj)); |
| obj.handle = gem_create(fd, 4096); |
| gem_write(fd, obj.handle, 0, &bbe, sizeof(&bbe)); |
| |
| memset(&execbuf, 0, sizeof(execbuf)); |
| execbuf.buffers_ptr = (uintptr_t)&obj; |
| execbuf.buffer_count = 1; |
| |
| for (ring = 0; ring < 1<<6; ring++) { |
| execbuf.flags = ring; |
| __gem_execbuf(fd, &execbuf); |
| } |
| |
| if (gem_has_bsd2(fd)) { |
| execbuf.flags = I915_EXEC_BSD | (2 << 13); |
| __gem_execbuf(fd, &execbuf); |
| } |
| |
| gem_sync(fd, obj.handle); |
| gem_close(fd, obj.handle); |
| |
| igt_drop_caches_set(DROP_RETIRE); |
| } |
| |
| /** |
| * drm_get_card: |
| * |
| * Get an i915 drm card index number for use in /dev or /sys. The minor index of |
| * the legacy node is returned, not of the control or render node. |
| * |
| * Returns: |
| * The i915 drm index or -1 on error |
| */ |
| int drm_get_card(void) |
| { |
| char *name; |
| int i, fd; |
| |
| for (i = 0; i < 16; i++) { |
| int ret; |
| |
| ret = asprintf(&name, "/dev/dri/card%u", i); |
| igt_assert(ret != -1); |
| |
| fd = open(name, O_RDWR); |
| free(name); |
| |
| if (fd == -1) |
| continue; |
| |
| if (!is_i915_device(fd) || !is_intel(fd)) { |
| close(fd); |
| continue; |
| } |
| |
| close(fd); |
| return i; |
| } |
| |
| igt_skip("No intel gpu found\n"); |
| |
| return -1; |
| } |
| |
| /** |
| * __drm_open_driver: |
| * @chipset: OR'd flags for each chipset to search, eg. #DRIVER_INTEL |
| * |
| * Open the first DRM device we can find, searching up to 16 device nodes |
| * |
| * Returns: |
| * An open DRM fd or -1 on error |
| */ |
| int __drm_open_driver(int chipset) |
| { |
| for (int i = 0; i < 16; i++) { |
| char name[80]; |
| int fd; |
| bool found_intel, found_vc4; |
| |
| sprintf(name, "/dev/dri/card%u", i); |
| fd = open(name, O_RDWR); |
| if (fd == -1) |
| continue; |
| |
| found_intel = is_i915_device(fd) && is_intel(fd) && (chipset & DRIVER_INTEL); |
| |
| found_vc4 = is_vc4_device(fd) && (chipset & DRIVER_VC4); |
| |
| if ((chipset & DRIVER_ANY) || found_intel || found_vc4) |
| return fd; |
| |
| close(fd); |
| } |
| |
| igt_skip("No intel gpu found\n"); |
| return -1; |
| } |
| |
| static int __drm_open_driver_render(int chipset) |
| { |
| char *name; |
| int i, fd; |
| |
| for (i = 128; i < (128 + 16); i++) { |
| int ret; |
| |
| ret = asprintf(&name, "/dev/dri/renderD%u", i); |
| igt_assert(ret != -1); |
| |
| fd = open(name, O_RDWR); |
| free(name); |
| |
| if (fd == -1) |
| continue; |
| |
| if (!is_i915_device(fd) || !is_intel(fd)) { |
| close(fd); |
| fd = -1; |
| continue; |
| } |
| |
| return fd; |
| } |
| |
| return fd; |
| } |
| |
| static int at_exit_drm_fd = -1; |
| static int at_exit_drm_render_fd = -1; |
| |
| static void quiescent_gpu_at_exit(int sig) |
| { |
| if (at_exit_drm_fd < 0) |
| return; |
| |
| gem_quiescent_gpu(at_exit_drm_fd); |
| close(at_exit_drm_fd); |
| at_exit_drm_fd = -1; |
| } |
| |
| static void quiescent_gpu_at_exit_render(int sig) |
| { |
| if (at_exit_drm_render_fd < 0) |
| return; |
| |
| gem_quiescent_gpu(at_exit_drm_render_fd); |
| close(at_exit_drm_render_fd); |
| at_exit_drm_render_fd = -1; |
| } |
| |
| /** |
| * drm_open_driver: |
| * @chipset: OR'd flags for each chipset to search, eg. #DRIVER_INTEL |
| * |
| * Open a drm legacy device node. This function always returns a valid |
| * file descriptor. |
| * |
| * Returns: a drm file descriptor |
| */ |
| int drm_open_driver(int chipset) |
| { |
| static int open_count; |
| int fd = __drm_open_driver(chipset); |
| |
| igt_require(fd >= 0); |
| |
| if (__sync_fetch_and_add(&open_count, 1)) |
| return fd; |
| |
| if(chipset & DRIVER_INTEL){ |
| gem_quiescent_gpu(fd); |
| igt_install_exit_handler(quiescent_gpu_at_exit); |
| } |
| at_exit_drm_fd = __drm_open_driver(chipset); |
| |
| return fd; |
| } |
| |
| /** |
| * drm_open_driver_master: |
| * @chipset: OR'd flags for each chipset to search, eg. #DRIVER_INTEL |
| * |
| * Open a drm legacy device node and ensure that it is drm master. |
| * |
| * Returns: |
| * The drm file descriptor or -1 on error |
| */ |
| int drm_open_driver_master(int chipset) |
| { |
| int fd = drm_open_driver(chipset); |
| |
| igt_require(fd >= 0); |
| igt_require_f(drmSetMaster(fd) == 0, "Can't become DRM master, " |
| "please check if no other DRM client is running.\n"); |
| |
| return fd; |
| } |
| |
| /** |
| * drm_open_driver_render: |
| * @chipset: OR'd flags for each chipset to search, eg. #DRIVER_INTEL |
| * |
| * Open a drm render device node. |
| * |
| * Returns: |
| * The drm file descriptor or -1 on error |
| */ |
| int drm_open_driver_render(int chipset) |
| { |
| static int open_count; |
| int fd = __drm_open_driver_render(chipset); |
| |
| /* no render nodes, fallback to drm_open_driver() */ |
| if (fd == -1) |
| return drm_open_driver(chipset); |
| |
| if (__sync_fetch_and_add(&open_count, 1)) |
| return fd; |
| |
| at_exit_drm_render_fd = __drm_open_driver(chipset); |
| if(chipset & DRIVER_INTEL){ |
| gem_quiescent_gpu(fd); |
| igt_install_exit_handler(quiescent_gpu_at_exit_render); |
| } |
| |
| return fd; |
| } |