On Mon, May 16, 2016 at 05:50:40PM -0700, Manasi Navare wrote:
> This is the userspace component of the Displayport Compliance
> testing software required for compliance testing of the I915
> Display Port driver. This must be running in order to successfully
> complete Display Port compliance testing. This app and the kernel
> code that accompanies it has been written to satify the requirements
> of the Displayport Link CTS 1.2 rev1.1 specification from VESA.
> Note that this application does not support eDP compliance testing.
> This utility ahs an automation support for the EDID tests (4.2.2.3
> - 4.2.2.6) and Video Pattern generation tests (400.3.3.1) from CTS
> specification 1.2 Rev 1.1. Currently the video pattern automation
> has been explicitly disabled until the link training automation is
> fully supported in the kernel.
>
> The Linux DUT running this utility must be in text (console) mode
> and cannot have any other display manager running. Since this uses
> sysfs nodes for kernel interaction, this utility should be run as
> Root. Once this user application is up and running, waiting for
> test requests, the test appliance software on the windows host
> can now be used to execute the compliance tests.
>
> This app is based on some prior work done in April 2015 (by
> Todd Previte <tprev...@gmail.com>)
>
> v1:
> * Reworked gem_mmap/unmap logic so these calls go
> together (by Marius Vlad)
> * Cleaned up the setup_drm/restore/close calls so that
> it happens before the tests, after every test and at exit
> (by Marius Vlad)
>
> Signed-off-by: Marius Vlad <marius.c.v...@intel.com>
> Signed-off-by: Todd Previte <tprev...@gmail.com>
> Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
> ---
> tools/Makefile.sources | 1 +
> tools/intel_dp_compliance.c | 1089
> +++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 1090 insertions(+)
> create mode 100644 tools/intel_dp_compliance.c
>
> diff --git a/tools/Makefile.sources b/tools/Makefile.sources
> index 5d5958d..3054856 100644
> --- a/tools/Makefile.sources
> +++ b/tools/Makefile.sources
> @@ -13,6 +13,7 @@ bin_PROGRAMS = \
> intel_bios_reader \
> intel_display_crc \
> intel_display_poller \
> + intel_dp_compliance \
> intel_dump_decode \
> intel_error_decode \
> intel_forcewaked \
> diff --git a/tools/intel_dp_compliance.c b/tools/intel_dp_compliance.c
> new file mode 100644
> index 0000000..31996ba
> --- /dev/null
> +++ b/tools/intel_dp_compliance.c
> @@ -0,0 +1,1089 @@
> +/*
> + * Copyright ? 2014-2015 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.
> + *
> + * Displayport Compliance Testing Application
> + *
> + * This is the userspace component of the Displayport Compliance testing
> + * software required for compliance testing of the I915 Display Port driver.
> + * This must be running in order to successfully complete Display Port
> + * compliance testing. This app and the kernel code that accompanies it has
> been
> + * written to satify the requirements of the Displayport Link CTS 1.2 rev1.1
> + * specification from VESA. Note that this application does not support eDP
> + * compliance testing.
> + *
> + * Compliance Testing requires several components:
> + * - A kernel build that contains the patch set for DP compliance support
> + * Make sure it has the EDID compliance automation patch
> + * - A Displayport Compliance Testing appliance such as Unigraf-DPR120
> + * - This user application
> + * - A windows host machine to run the DPR test software
> + * - Root access on the DUT due to the use of sysfs utility
> + *
> + * Test Setup:
> + * It is strongly recommended that the windows host, test appliance and DUT
> + * be freshly restarted before any testing begins to ensure that any previous
> + * configurations and settings will not interfere with test process. Refer to
> + * the test appliance documentation for setup, software installation and
> + * operation specific to that device.
> + *
> + * The Linux DUT must be in text (console) mode and cannot have any other
> + * display manager running. You must be logged in as root to run this user
> app.
> + * Once the user application is up and running, waiting for test requests,
> the
> + * software on the windows host can now be used to execute the compliance
> tests.
> + *
> + * This userspace application supports following tests from the DP CTS Spec
> + * Rev 1.1:
> + * - EDID Tests: Supports EDID read (4.2.2.3),EDID Read failure and
> corruption
> + * detection tests (4.2.2.4, 4.2.2.5, 4.2.2.6)
> + * - Video Pattern generation tests: This supports only the 24 and 18bpp
> color
> + * ramp test pattern (400.3.3.1).
> + *
> + * Connections (required):
> + * - Test Appliance connected to the external Displayport connector on the
> DUT
> + * - Test Appliance Monitor Out connected to Displayport connector on the
> + * monitor
> + * - Test appliance connected to the Windows Host via USB
> + *
> + * Debugfs Files:
> + * The file root for all the debugfs file:
> + * /sys/kernel/debug/dri/0/
> + *
> + * The specific files are as follows:
> + *
> + * i915_dp_test_active
> + * A simple flag that indicates whether or not compliance testing is
> currently
> + * active in the kernel. This flag is polled by userspace and once set,
> invokes
> + * the test handler in the user app. This flag is set by the test handler in
> the
> + * kernel after reading the registers requested by the test appliance.
> + *
> + * i915_dp_test_data
> + * Test data is used by the kernel to pass parameters to the user app. Eg: In
> + * case of EDID tests, the data that is delivered to the userspace is the
> video
> + * mode to be set for the test.
> + * In case of video pattern test, the data that is delivered to the
> userspace is
> + * the width and height of the test pattern and the bits per color value.
> + *
> + * i915_dp_test_type
> + * The test type variable instructs the user app as to what the requested
> test
> + * was from the sink device. These values defined at the top of the
> application's
> + * main implementation file must be kept in sync with the values defined in
> the
> + * kernel's drm_dp_helper.h file.
> + * This app is based on some prior work submitted in April 2015 by Todd
> Previte
> + * (<tprev...@gmail.com>)
> + *
> + * Authors:
> + * Todd Previte <tprev...@gmail.com>
> + * Manasi Navare <manasi.d.nav...@intel.com>
> + *
> + * Elements of the modeset code adapted from David Herrmann's
> + * DRM modeset example
> + *
> +*/
> +#include "igt.h"
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +#include <string.h>
> +#include <errno.h>
> +#include <limits.h>
> +#include <stdbool.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <errno.h>
> +#include <math.h>
> +#include "drm_fourcc.h"
> +
> +#include <sys/select.h>
> +#include <stdbool.h>
> +#include <assert.h>
> +#include <xf86drm.h>
> +#include <xf86drmMode.h>
> +#include <i915_drm.h>
> +
> +#include <sys/stat.h>
> +#include <signal.h>
> +#include <termios.h>
> +#include <fcntl.h>
> +#include <errno.h>
> +#include <poll.h>
> +
> +#include <sys/mman.h>
> +#include <time.h>
> +
> +#define I915_DRIVER_NODE "/dev/dri/card0"
> +#define INTEL_DP_TEST_TYPE_FILE "i915_dp_test_type"
> +#define INTEL_DP_TEST_ACTIVE_FILE "i915_dp_test_active"
> +#define INTEL_DP_TEST_DATA_FILE "i915_dp_test_data"
> +
> +/* DRM definitions - must be kept in sync with the DRM header */
> +#define DP_TEST_LINK_TRAINING (1 << 0)
> +#define DP_TEST_LINK_VIDEO_PATTERN (1 << 1)
> +#define DP_TEST_LINK_EDID_READ (1 << 2)
> +#define DP_TEST_LINK_PHY_TEST_PATTERN (1 << 3) /* DPCD >= 1.1 */
> +
> +#define DP_COMPLIANCE_TEST_TYPE_MASK (DP_TEST_LINK_TRAINING | \
> + DP_TEST_LINK_VIDEO_PATTERN | \
> + DP_TEST_LINK_EDID_READ | \
> + DP_TEST_LINK_PHY_TEST_PATTERN)
> +
> +/* NOTE: These must be kept in sync with the definitions in intel_dp.c */
> +#define INTEL_DP_EDID_SHIFT_MASK 0
> +#define INTEL_DP_EDID_OK (0 << INTEL_DP_EDID_SHIFT_MASK)
> +#define INTEL_DP_EDID_CORRUPT (1 << INTEL_DP_EDID_SHIFT_MASK)
> +#define INTEL_DP_RESOLUTION_SHIFT_MASK 0
> +#define INTEL_DP_RESOLUTION_PREFERRED (1 <<
> INTEL_DP_RESOLUTION_SHIFT_MASK)
> +#define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
> +#define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
> +#define DP_COMPLIANCE_VIDEO_MODE_MASK (INTEL_DP_RESOLUTION_PREFERRED
> |\
> + INTEL_DP_RESOLUTION_STANDARD |\
> + INTEL_DP_RESOLUTION_FAILSAFE)
> +
> +
> +/* Global Variables */
> +enum {
> + INTEL_MODE_INVALID = -1,
> + INTEL_MODE_NONE = 0,
> + INTEL_MODE_PREFERRED,
> + INTEL_MODE_STANDARD,
> + INTEL_MODE_FAILSAFE,
> + INTEL_MODE_VIDEO_PATTERN_TEST
> +} intel_display_mode;
> +
> +struct test_video_pattern {
> + uint16_t hdisplay;
> + uint16_t vdisplay;
> + uint8_t bitdepth;
> + uint32_t fb;
> + uint32_t size;
> + struct igt_fb fb_pattern;
> + drmModeModeInfo mode;
> + uint32_t *pixmap;
> +};
> +
> +
> +struct dp_connector {
> + drmModeModeInfo mode_standard, mode_preferred, mode_failsafe;
> + drmModeEncoder *encoder;
> + /* Standard and preferred frame buffer*/
> + uint32_t fb, fb_width, fb_height, fb_size;
> + uint8_t *pixmap;
> + struct igt_fb fb_video_pattern;
> + /* Failsafe framebuffer - note this is a 16-bit buffer */
> + uint32_t failsafe_fb, failsafe_width, failsafe_height;
> + uint32_t failsafe_size;
> + uint8_t *failsafe_pixmap;
> + struct igt_fb fb_failsafe_pattern;
> + struct test_video_pattern test_pattern;
> + uint32_t conn;
> + uint32_t crtc;
> + struct dp_connector *next;
> +};
> +
> +/* CRTC to restore the default mode */
> +drmModeCrtc *default_crtc;
> +/* HEAD of the DP Connectors Linked List */
> +struct dp_connector *dp_connector_list;
> +/* Number of DP connector nodes in linked list */
> +unsigned short dp_connector_count;
> +struct termios orig_termios;
> +/* Global file pointers for the sysfs files */
> +FILE *test_active_fp, *test_data_fp, *test_type_fp;
> +/* Flag needed to mmap for Video pattern test */
> +bool video_pattern_flag = false;
> +
> +/*Input handling*/
> +static void reset_terminal_mode(void);
> +static void set_conio_terminal_mode(void);
> +static int kbhit(void);
> +
> +/* Test Execution function declearations */
> +static void setup_debugfs_files(void);
> +static int setup_crtc_for_connector(int fd, drmModeRes *mr, drmModeConnector
> *c,
> + struct dp_connector *dp_conn);
> +static int setup_framebuffers(int drv_fd, struct dp_connector *dp_conn);
> +static int setup_failsafe_framebuffer(int drv_fd, struct dp_connector
> *dp_conn);
> +static int setup_video_pattern_framebuffer(int drv_fd,
> + struct dp_connector *dp_conn);
> +static int fill_framebuffer(int drv_fd, struct dp_connector *dp_conn);
> +static int setup_dp_connector(int drv_fd, drmModeRes *mr, drmModeConnector
> *c,
> + struct dp_connector *dp_conn);
> +static int setup_connectors(int drv_fd, drmModeResPtr pmr);
> +static int setup_drm(int *drv_fd);
> +static void shutdown(int drv_fd);
> +static void cleanup_debugfs(void);
> +static int set_video_mode(int drv_fd, int mode,
> + struct dp_connector *test_connector);
> +static bool check_test_active(void);
> +static void clear_test_active(void);
> +static unsigned long get_test_edid_data(void);
> +static unsigned long get_test_type(void);
> +static void get_test_videoPattern_data(struct dp_connector *connector);
> +static int save_default_mode(int drv_fd);
> +static int restore_default_mode(int drv_fd);
> +static int process_test_request(int drv_fd, int test_type,
> + drmModeResPtr pmr);
> +
> +
> +static void reset_terminal_mode(void)
> +{
> + tcsetattr(0, TCSANOW, &orig_termios);
> +}
> +
> +static void set_conio_terminal_mode(void)
> +{
> + struct termios new_termios;
> + /* take two copies - one for now or one for later*/
> + tcgetattr(0, &orig_termios);
> + memcpy(&new_termios, &orig_termios, sizeof(new_termios));
> +
> + /* register cleanup handler, and set the new terminal mode */
> + atexit(reset_terminal_mode);
> + cfmakeraw(&new_termios);
> + tcsetattr(0, TCSANOW, &new_termios);
> +}
> +
> +static int kbhit(void)
> +{
> + struct timeval tv = { 0L, 0L };
> + fd_set fds;
> +
> + FD_ZERO(&fds);
> + FD_SET(0, &fds);
> +
> + return select(1, &fds, NULL, NULL, &tv);
No point in passing &tv.
> +}
> +
> +
> +static int save_default_mode(int drv_fd)
> +{
> + drmModeConnector *c;
> + int i, j;
> + drmModeRes *mode_resources = drmModeGetResources(drv_fd);
> + drmModeEncoder *drm_encoder = NULL;
> + int32_t crtc;
> +
> + if (!mode_resources) {
> + igt_warn("drmModeGetResources failed: %s\n", strerror(errno));
> + return -1;
> + }
> +
> + for (i = 0; i < mode_resources->count_connectors; i++) {
> +
> + c = drmModeGetConnector(drv_fd, mode_resources->connectors[i]);
> + if (!c) {
> + printf("Failed to retrieve connector %u:%u\r\n",
> + i, mode_resources->connectors[i]);
> + continue;
> + }
> +
> + if (c->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
> + continue;
> + printf("Supported modes for Connector %d are: \r\n",
> + c->connector_id);
> + printf("name refresh (Hz) hdisp hss hse htot vdisp"
> + "vss vse vtot flags type clock\r\n");
> + for (j = 0; j < c->count_modes; j++) {
> + printf("[%d] ", j);
> + printf("%s %d %d %d %d %d %d %d %d %d 0x%x 0x%x %d\r\n",
> + c->modes[j].name, c->modes[j].vrefresh,
> + c->modes[j].hdisplay, c->modes[j].hsync_start,
> + c->modes[j].hsync_end, c->modes[j].htotal,
> + c->modes[j].vdisplay, c->modes[j].vsync_start,
> + c->modes[j].vsync_end, c->modes[j].vtotal,
> + c->modes[j].flags, c->modes[j].type,
> + c->modes[j].clock);
> + }
> + /* Use attached encoder if possible */
> + if (c->encoder_id)
> + drm_encoder = drmModeGetEncoder(drv_fd, c->encoder_id);
> + if (drm_encoder) {
> + if (drm_encoder->crtc_id) {
> + crtc = drm_encoder->crtc_id;
> + }
> + }
> + default_crtc = drmModeGetCrtc(drv_fd, crtc);
> + drmModeFreeEncoder(drm_encoder);
> + drmModeFreeConnector(c);
> +
> + }
> + drmModeFreeResources(mode_resources);
> + printf("Default Mode is:\r\n");
> + printf("%s %d %d %d %d %d %d %d %d %d 0x%x 0x%x %d\r\n",
> + default_crtc->mode.name, default_crtc->mode.vrefresh,
> + default_crtc->mode.hdisplay, default_crtc->mode.hsync_start,
> + default_crtc->mode.hsync_end, default_crtc->mode.htotal,
> + default_crtc->mode.vdisplay, default_crtc->mode.vsync_start,
> + default_crtc->mode.vsync_end, default_crtc->mode.vtotal,
> + default_crtc->mode.flags, default_crtc->mode.type,
> + default_crtc->mode.clock);
> +
> + return 0;
> +}
> +
> +static int restore_default_mode(int drv_fd)
> +{
> + drmModeConnector *c;
> + int i, j;
> + drmModeRes *mode_resources = drmModeGetResources(drv_fd);
> + drmModeEncoder *drm_encoder = NULL;
> + int32_t crtc;
> +
> + if (!mode_resources) {
> + igt_warn("drmModeGetResources failed: %s\n", strerror(errno));
> + return -1;
> + }
> +
> + for (i = 0; i < mode_resources->count_connectors; i++) {
> +
> + c = drmModeGetConnector(drv_fd, mode_resources->connectors[i]);
> + if (!c) {
> + printf("Failed to retrieve connector %u:%u\r\n",
> + i, mode_resources->connectors[i]);
> + continue;
> + }
> +
> + if (c->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
> + continue;
> + printf("Supported modes for Connector %d are: \r\n",
> + c->connector_id);
> + printf("name refresh (Hz) hdisp hss hse htot vdisp "
> + "vss vse vtot flags type clock\r\n");
> + for (j = 0; j < c->count_modes; j++) {
> + printf("[%d] ", j);
> + printf("%s %d %d %d %d %d %d %d %d %d 0x%x 0x%x %d\r\n",
> + c->modes[j].name, c->modes[j].vrefresh,
> + c->modes[j].hdisplay, c->modes[j].hsync_start,
> + c->modes[j].hsync_end, c->modes[j].htotal,
> + c->modes[j].vdisplay, c->modes[j].vsync_start,
> + c->modes[j].vsync_end, c->modes[j].vtotal,
> + c->modes[j].flags, c->modes[j].type,
> + c->modes[j].clock);
> + }
> + /* Use attached encoder if possible */
> + if (c->encoder_id)
> + drm_encoder = drmModeGetEncoder(drv_fd, c->encoder_id);
> + if (drm_encoder) {
> + if (drm_encoder->crtc_id) {
> + crtc = drm_encoder->crtc_id;
> + }
> + }
> + drmModeSetCrtc(drv_fd, default_crtc->crtc_id,
> + default_crtc->buffer_id,
> + default_crtc->x,
> + default_crtc->y, &c->connector_id, 1,
> + &default_crtc->mode);
> + drmModeFreeEncoder(drm_encoder);
> + drmModeFreeConnector(c);
> +
> + }
> + drmModeFreeResources(mode_resources);
> + printf("Default Mode is: \r\n");
> + printf("%s %d %d %d %d %d %d %d %d %d 0x%x 0x%x %d\r\n",
> + default_crtc->mode.name, default_crtc->mode.vrefresh,
> + default_crtc->mode.hdisplay, default_crtc->mode.hsync_start,
> + default_crtc->mode.hsync_end, default_crtc->mode.htotal,
> + default_crtc->mode.vdisplay, default_crtc->mode.vsync_start,
> + default_crtc->mode.vsync_end, default_crtc->mode.vtotal,
> + default_crtc->mode.flags, default_crtc->mode.type,
> + default_crtc->mode.clock);
> +
> + return 0;
> +}
> +
> +static unsigned long get_test_edid_data(void)
> +{
> + unsigned long test_data;
> +
> + if (!test_data_fp)
> + fprintf(stderr, "Invalid Test data File Pointer\r\n");
> +
> + rewind(test_data_fp);
> + fscanf(test_data_fp, "%lx", &test_data);
> + if (test_data <= 0) {
> + printf("Test data read failed - %lx\r\n", test_data);
> + return 0;
> + }
> +
> + return test_data;
> +}
> +
lower-case.
> +static void get_test_videoPattern_data(struct dp_connector *connector)
> +{
> + int count = 0;
> + uint16_t video_pattern_value[3];
> + char video_pattern_attribute[15];
> +
> + if (!test_data_fp)
> + fprintf(stderr, "Invalid Test data File pointer\r\n");
> +
> + rewind(test_data_fp);
> + while (!feof(test_data_fp) && count < 3)
> + fscanf(test_data_fp, "%s %u\n", video_pattern_attribute,
> + &video_pattern_value[count++]);
> +
> + connector->test_pattern.hdisplay = video_pattern_value[0];
> + connector->test_pattern.vdisplay = video_pattern_value[1];
> + connector->test_pattern.bitdepth = video_pattern_value[2];
> + printf("Hdisplay = %u\r\n", connector->test_pattern.hdisplay);
> + printf("Vdisplay = %u\r\n", connector->test_pattern.vdisplay);
> + printf("BitDepth = %u\r\n", connector->test_pattern.bitdepth);
> +
> +}
> +
> +static unsigned long get_test_type(void)
> +{
> + unsigned long test_type;
> +
> + if (!test_type_fp)
> + fprintf(stderr, "Invalid Test Type File pointr\r\n");
> + rewind(test_type_fp);
> + fscanf(test_type_fp, "%02lx", &test_type);
> + if (test_type <= 0) {
> + printf("Test type read failed - %02lx\r\n", test_type);
> + return 0;
> + }
> +
> + return test_type;
> +}
> +
> +static int process_test_request(int drv_fd, int test_type,
> + drmModeResPtr pmr)
> +{
> + int status = -1;
> + int mode;
> + unsigned long test_data_edid;
> + struct dp_connector *connector;
> +
> + /* Disable the main link before starting the test
> + * Note that this should probably be signaled through a debugfs file
> + * from the kernel at the start of testing.
> + */
> + switch (test_type) {
> + case DP_TEST_LINK_VIDEO_PATTERN:
> + video_pattern_flag = true;
> + setup_connectors(drv_fd, pmr);
setup_connectors() returns 0 even if it failed to find a suitable
connector is !DRM_MODE_CONNECTOR_DisplayPort or setup_dp_connector()
failed -> dp_connector_list will be NULL so is the connector.
> + connector = &dp_connector_list[0];
Why are you indexing it? (connector = &dp_connector_list). It just seems
you're trying it to access it as an array. On the other hand you
seem to also have a var to count the number of connectors. Maybe
it makes more sense to use as it/treat it array, that is, to
remove the next ptr and use the cntr variable.
> + get_test_videoPattern_data(connector);
> + fill_framebuffer(drv_fd, connector);
> + mode = INTEL_MODE_VIDEO_PATTERN_TEST;
> + set_video_mode(drv_fd, INTEL_MODE_NONE, connector);
> + status = set_video_mode(drv_fd, mode, connector);
> + break;
> + case DP_TEST_LINK_EDID_READ:
> + setup_connectors(drv_fd, pmr);
> + connector = &dp_connector_list[0];
> + test_data_edid = get_test_edid_data();
> + mode = (test_data_edid & DP_COMPLIANCE_VIDEO_MODE_MASK) >>
> + INTEL_DP_RESOLUTION_SHIFT_MASK;
> + set_video_mode(drv_fd, INTEL_MODE_NONE, connector);
> + status = set_video_mode(drv_fd, mode, connector);
> + break;
> + case DP_TEST_LINK_PHY_TEST_PATTERN:
> + /* PHY Test Pattern = future implementation */
> + break;
> + default:
> + /* Unknown test type */
> + fprintf(stderr, "Invalid test request. Ignored.\r\n");
> + break;
> + }
> + clear_test_active();
> +
> + /* Return 0 on success and -1 on failure */
> + return status;
> +}
> +
> +static void cleanup_debugfs(void)
> +{
> + fclose(test_active_fp);
> + fclose(test_data_fp);
> + fclose(test_type_fp);
> +}
> +
> +static bool check_test_active(void)
> +{
> + unsigned long test_active;
> +
> + if (!test_type_fp)
> + fprintf(stderr, "Invalid test type file pointer\r\n");
> + rewind(test_active_fp);
> + fscanf(test_active_fp, "%lx", &test_active);
> + if (test_active == 1)
> + return 1;
> +
> + return 0;
> +}
> +
> +static void clear_test_active(void)
> +{
> + rewind(test_active_fp);
> + fprintf(test_active_fp, "%d", 0);
> +}
> +
> +static void setup_debugfs_files(void)
> +{
> + test_type_fp = igt_debugfs_fopen(INTEL_DP_TEST_TYPE_FILE, "r");
> + igt_require(test_type_fp);
> +
> + test_data_fp = igt_debugfs_fopen(INTEL_DP_TEST_DATA_FILE, "r");
> + igt_require(test_data_fp);
> +
> + test_active_fp = igt_debugfs_fopen(INTEL_DP_TEST_ACTIVE_FILE, "w+");
> + igt_require(test_active_fp);
> +
> + /* Reset the active flag for safety */
> + clear_test_active();
> +}
> +
> +
> +static int setup_drm(int *drv_fd)
> +{
> + int drm_fd;
> +
> + if (!drmAvailable()) {
> + printf("Error: DRM not available\r\n");
> + return -EOPNOTSUPP;
> + }
> +
> + drm_fd = drm_open_driver(DRIVER_INTEL);
> + if (drm_fd == -1) {
> + fprintf(stderr, "Cannot Open DRM Device\r\n");
> + return -1;
> + }
> + *drv_fd = drm_fd;
> +
> + return 0;
> +}
> +
> +
> +static int setup_connectors(int drv_fd, drmModeResPtr pmr)
> +{
> + int ret, i;
> + drmModeConnector *c;
> + struct dp_connector *dp_conn;
> +
> + pmr = drmModeGetResources(drv_fd);
> + if (!pmr) {
> + printf("ERROR: Failed to retrieve DRM resources\r\n");
> + return -1;
> + }
> +
> + for (i = 0; i < pmr->count_connectors; i++) {
> +
> + c = drmModeGetConnector(drv_fd, pmr->connectors[i]);
> + if (!c) {
> + printf("Failed to retrieve connector %u:%u\r\n",
> + i, pmr->connectors[i]);
> + continue;
> + }
> +
> + if (c->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
> + continue;
> +
> + dp_conn = malloc(sizeof(*dp_conn));
> + memset(dp_conn, 0, sizeof(*dp_conn));
> + dp_conn->conn = c->connector_id;
> + dp_conn->next = dp_connector_list;
> + dp_connector_list = dp_conn;
The head of the list will be NULL if this is not a
DRM_MODE_CONNECTOR_DisplayPort. See comment where you call this
function without checking its return value.
> +
> + /* Setup the DP connector*/
> + ret = setup_dp_connector(drv_fd, pmr, c, dp_conn);
> + if (ret == -1) {
> + printf("Failed to setup DP connector %u:%u\r\n",
> + i,
> + pmr->connectors[i]);
> + free(dp_conn);
> + drmModeFreeConnector(c);
> + continue;
> + } else
> + dp_connector_count++;
Keep the same style (i.e., if () {} else {} ).
> +
> + /* free connector data and link device into global list */
> + drmModeFreeConnector(c);
> + }
> + drmModeFreeResources(pmr);
> +
> + return 0;
> +}
> +
> +static int setup_dp_connector(int drv_fd, drmModeRes *mr, drmModeConnector
> *c,
> + struct dp_connector *dp_conn)
> +{
> + int ret, i;
> + bool found_std = false, found_fs = false;
> +
> + /* Ignore any disconnected devices */
> + if (c->connection != DRM_MODE_CONNECTED) {
> + printf("Connector %u disconnected\r\n", c->connector_id);
> + return -ENOENT;
> + }
> + printf("Connector Setup:\r\n");
> + /* Setup preferred mode - should be mode[0] in the list */
> + dp_conn->mode_preferred = c->modes[0];
> + dp_conn->fb_width = c->modes[0].hdisplay;
> + dp_conn->fb_height = c->modes[0].vdisplay;
> +
> + dp_conn->test_pattern.mode = c->modes[0];
> + dp_conn->test_pattern.mode.hdisplay = c->modes[0].hdisplay;
> + dp_conn->test_pattern.mode.vdisplay = c->modes[0].vdisplay;
> +
> + printf("Preferred mode (mode 0) for connector %u is %ux%u\r\n",
> + c->connector_id, c->modes[0].hdisplay, c->modes[0].vdisplay);
> + fflush(stdin);
> +
> + for (i = 1; i < c->count_modes; i++) {
> + /* Standard mode is 800x600@60 */
> + if (c->modes[i].hdisplay == 800 &&
> + c->modes[i].vdisplay == 600 &&
> + c->modes[i].vrefresh == 60 &&
> + found_std == false) {
> + dp_conn->mode_standard = c->modes[i];
> + printf("Standard mode (%d) for connector %u is
> %ux%u\r\n",
> + i,
> + c->connector_id,
> + c->modes[i].hdisplay,
> + c->modes[i].vdisplay);
> + found_std = true;
> + }
> + /* Failsafe mode is 640x480@60 */
> + if (c->modes[i].hdisplay == 640 &&
> + c->modes[i].vdisplay == 480 &&
> + c->modes[i].vrefresh == 60 &&
> + found_fs == false) {
> + dp_conn->mode_failsafe = c->modes[i];
> + dp_conn->failsafe_width = c->modes[i].hdisplay;
> + dp_conn->failsafe_height = c->modes[i].vdisplay;
> + printf("Failsafe mode (%d) for connector %u is
> %ux%u\r\n",
> + i,
> + c->connector_id,
> + c->modes[i].hdisplay,
> + c->modes[i].vdisplay);
> + found_fs = true;
> + }
> + }
> +
> + ret = setup_crtc_for_connector(drv_fd, mr, c, dp_conn);
> + if (ret) {
> + printf("Set CRTC for connector %u failed (%d)\r\n",
> + c->connector_id, ret);
> + return ret;
> + }
> +
> + ret = setup_framebuffers(drv_fd, dp_conn);
> + if (ret) {
> + printf("Create framebuffer for connector %u failed (%d)\r\n",
> + c->connector_id, ret);
> + return ret;
> + }
> +
> + if (found_fs) {
> + ret = setup_failsafe_framebuffer(drv_fd, dp_conn);
> + if (ret) {
> + printf("Create failsafe framebuffer for connector %u"
> + "failed (%d)\r\n",
> + c->connector_id, ret);
> + return ret;
> + }
> + }
> +
> + if (video_pattern_flag) {
> + ret = setup_video_pattern_framebuffer(drv_fd, dp_conn);
> + if (ret) {
> + printf("Create framebuffer for connector %u failed
> (%d)\r\n",
> + c->connector_id, ret);
> + return ret;
Maybe it makes sense to call igt_remove_fb()....
> + }
> + }
> +
> + return ret;
> +}
> +
> +static int setup_crtc_for_connector(int fd, drmModeRes *mr, drmModeConnector
> *c,
> + struct dp_connector *dp_conn)
> +{
> + drmModeEncoder *drm_encoder = NULL;
> + struct dp_connector *dpc;
> + int i, j;
> + int32_t crtc;
> +
> + /* Use attached encoder if possible */
> + if (c->encoder_id)
> + drm_encoder = drmModeGetEncoder(fd, c->encoder_id);
> +
> + if (drm_encoder && drm_encoder->crtc_id) {
> +
> + crtc = drm_encoder->crtc_id;
> + printf("Encoder CRTC = %d\r\n", crtc);
> + for (dpc = dp_connector_list; dpc; dpc = dpc->next) {
> + if (dpc->crtc == crtc) {
> + crtc = -1;
> + break;
> + }
> + }
> + if (crtc >= 0) {
> + drmModeFreeEncoder(drm_encoder);
> + dp_conn->crtc = crtc;
> + return 0;
> + }
> + drmModeFreeEncoder(drm_encoder);
> + }
> +
> + /* Check all encoder/crtc combinations */
> + for (i = 0; i < c->count_encoders; i++) {
> + drm_encoder = drmModeGetEncoder(fd, c->encoders[i]);
> + if (!drm_encoder)
> + continue;
> + for (j = 0; j < mr->count_crtcs; j++) {
> + if (!(drm_encoder->possible_crtcs & (1 << j)))
> + continue;
> + crtc = mr->crtcs[j];
> + for (dpc = dp_connector_list; dpc; dpc = dpc->next) {
> + if (dpc->crtc == crtc) {
> + crtc = -1;
> + break;
> + }
> + }
> + if (crtc >= 0) {
> + drmModeFreeEncoder(drm_encoder);
> + dp_conn->crtc = crtc;
> + return 0;
> + }
> + }
> + drmModeFreeEncoder(drm_encoder);
> + }
> + printf("No CRTC available for connector %u\r\n", c->connector_id);
> + return -1;
> +}
> +
> +static int setup_framebuffers(int drv_fd, struct dp_connector *dp_conn)
> +{
> +
> + dp_conn->fb = igt_create_fb(drv_fd,
> + dp_conn->fb_width, dp_conn->fb_height,
> + DRM_FORMAT_XRGB8888,
> + LOCAL_DRM_FORMAT_MOD_NONE,
> + &dp_conn->fb_video_pattern);
> + igt_assert(dp_conn->fb);
> +
> + /* Map the mapping of GEM object into the virtual address space */
> + dp_conn->pixmap = gem_mmap__gtt(drv_fd,
> + dp_conn->fb_video_pattern.gem_handle,
> + dp_conn->fb_video_pattern.size,
> + PROT_READ | PROT_WRITE);
> + gem_set_domain(drv_fd, dp_conn->fb_video_pattern.gem_handle,
> + I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
> + dp_conn->fb_size = dp_conn->fb_video_pattern.size;
> +
> + /* After filling the device memory with 0s it needs to be unmapped */
> + memset(dp_conn->pixmap, 0, dp_conn->fb_size);
> + munmap(dp_conn->pixmap, dp_conn->fb_size);
No igt_remove_fb()?
> +
> + return 0;
> +}
> +
> +static int setup_failsafe_framebuffer(int drv_fd, struct dp_connector
> *dp_conn)
> +{
> +
> + dp_conn->failsafe_fb = igt_create_fb(drv_fd,
> + dp_conn->failsafe_width,
> + dp_conn->failsafe_height,
> + DRM_FORMAT_XRGB8888,
> + LOCAL_DRM_FORMAT_MOD_NONE,
> + &dp_conn->fb_failsafe_pattern);
> + igt_assert(dp_conn->failsafe_fb);
> +
> + /* Map the mapping of GEM object into the virtual address space */
> + dp_conn->failsafe_pixmap = gem_mmap__gtt(drv_fd,
> +
> dp_conn->fb_failsafe_pattern.gem_handle,
> +
> dp_conn->fb_failsafe_pattern.size,
> + PROT_READ | PROT_WRITE);
> + gem_set_domain(drv_fd, dp_conn->fb_failsafe_pattern.gem_handle,
> + I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
> + dp_conn->failsafe_size = dp_conn->fb_failsafe_pattern.size;
> +
> + /* After filling the device framebuffer the mapped memory needs to be
> freed */
> + memset(dp_conn->failsafe_pixmap, 0, dp_conn->failsafe_size);
> + munmap(dp_conn->failsafe_pixmap, dp_conn->failsafe_size);
> +
> + return 0;
> +
> +}
> +
> +
> +static int setup_video_pattern_framebuffer(int drv_fd, struct dp_connector
> *dp_conn)
> +{
> + uint32_t width, height;
> +
> + width = dp_conn->test_pattern.mode.hdisplay;
> + height = dp_conn->test_pattern.mode.vdisplay;
> + dp_conn->test_pattern.fb = igt_create_fb(drv_fd,
> + width, height,
> + DRM_FORMAT_XRGB8888,
> + LOCAL_DRM_FORMAT_MOD_NONE,
> +
> &dp_conn->test_pattern.fb_pattern);
Somehow this will leak.
> + igt_assert(dp_conn->test_pattern.fb);
> +
> + /* Map the mapping of GEM object into the virtual address space */
> + dp_conn->test_pattern.pixmap = gem_mmap__gtt(drv_fd,
> +
> dp_conn->test_pattern.fb_pattern.gem_handle,
> +
> dp_conn->test_pattern.fb_pattern.size,
> + PROT_READ | PROT_WRITE);
> + gem_set_domain(drv_fd, dp_conn->test_pattern.fb_pattern.gem_handle,
> + I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
> +
> + dp_conn->test_pattern.size = dp_conn->test_pattern.fb_pattern.size;
> +
> + memset(dp_conn->test_pattern.pixmap, 0, dp_conn->test_pattern.size);
> + return 0;
> +
> +}
> +
> +
> +static int fill_framebuffer(int drv_fd, struct dp_connector *dp_conn)
> +{
> + int ret;
> + uint32_t tile_height, tile_width, width, height;
> + uint32_t *red_ptr, *green_ptr, *blue_ptr, *white_ptr, *src_ptr,
> *dst_ptr;
> + int x, y;
> + int32_t pixel_val;
> +
> + width = dp_conn->test_pattern.mode.hdisplay;
> + height = dp_conn->test_pattern.mode.vdisplay;
> +
> + tile_height = 64;
> + tile_width = pow(2, dp_conn->test_pattern.bitdepth);
These are all ints, so why not (1 << dp_conn->test_pattern.bitdepth)?
> +
> + red_ptr = dp_conn->test_pattern.pixmap;
> + green_ptr = red_ptr + (width * tile_height);
> + blue_ptr = green_ptr + (width * tile_height);
> + white_ptr = blue_ptr + (width * tile_height);
> + x = 0;
> +
> + /* Fill the frame buffer with video pattern from CTS 3.1.5 */
> + while (x < width) {
> + for (pixel_val = 0; pixel_val < 256;
> + pixel_val = pixel_val + (256 / tile_width)) {
> + red_ptr[x] = pixel_val << 16;
> + green_ptr[x] = pixel_val << 8;
> + blue_ptr[x] = pixel_val << 0;
> + white_ptr[x] = red_ptr[x] | green_ptr[x] | blue_ptr[x];
> + if (++x >= width)
> + break;
> + }
> + }
> + for (y = 0; y < height; y++) {
> + if (y == 0 || y == 64 || y == 128 || y == 192)
> + continue;
> + switch ((y / tile_height) % 4) {
> + case 0:
> + src_ptr = red_ptr;
> + break;
> + case 1:
> + src_ptr = green_ptr;
> + break;
> + case 2:
> + src_ptr = blue_ptr;
> + break;
> + case 3:
> + src_ptr = white_ptr;
> + break;
> + }
> + dst_ptr = dp_conn->test_pattern.pixmap + (y * width);
> + memcpy(dst_ptr, src_ptr, (width * 4));
> + }
> + munmap(dp_conn->test_pattern.pixmap,
> + dp_conn->test_pattern.size);
> + return 0;
> +}
> +
> +
> +static int set_video_mode(int drv_fd, int mode, struct dp_connector
> *test_connector)
> +{
> + drmModeModeInfo *requested_mode;
> + uint32_t required_fb;
> + int ret = 0;
> +
> + switch (mode) {
> + case INTEL_MODE_NONE:
> + printf("NONE\r\n");
> + ret = drmModeSetCrtc(drv_fd, test_connector->crtc,
> + -1, 0, 0, NULL, 0, NULL);
> + goto out;
> + case INTEL_MODE_PREFERRED:
> + printf("PREFERRED\r\n");
> + requested_mode = &test_connector->mode_preferred;
> + required_fb = test_connector->fb;
> + break;
> + case INTEL_MODE_STANDARD:
> + printf("STANDARD\r\n");
> + requested_mode = &test_connector->mode_standard;
> + required_fb = test_connector->fb;
> + break;
> + case INTEL_MODE_FAILSAFE:
> + printf("FAILSAFE\r\n");
> + requested_mode = &test_connector->mode_failsafe;
> + required_fb = test_connector->failsafe_fb;
> + break;
> + case INTEL_MODE_VIDEO_PATTERN_TEST:
> + printf("VIDEO PATTERN TEST\r\n");
> + requested_mode = &test_connector->test_pattern.mode;
> + required_fb = test_connector->test_pattern.fb;
> + break;
> + case INTEL_MODE_INVALID:
> + default:
> + printf("INVALID! (%08x) Mode set aborted!\r\n", mode);
> + return -1;
> + }
> +
> + ret = drmModeSetCrtc(drv_fd, test_connector->crtc, required_fb, 0, 0,
> + &test_connector->conn, 1, requested_mode);
> +
> +out:
> + if (ret) {
> + printf("Failed to set CRTC for connector %u\r\n",
> + test_connector->conn);
> + }
> +
> + return ret;
> +}
> +
> +static void shutdown(int drv_fd)
> +{
> + int i;
> + struct dp_connector *index = dp_connector_list, *prev;
> +
> + for (i = 0; i < dp_connector_count; i++) {
> +
> + kmstest_dump_mode(&default_crtc->mode);
> +
> + prev = index;
> + index = index->next;
> + free(prev);
> + prev = NULL;
> + }
> + dp_connector_list = NULL;
> + dp_connector_count = 0;
> +
> +}
> +
> +int main(int argc, char *argv[])
> +{
> + int status = 0;
> + int drv_fd = 0;
> + drmModeResPtr mode_resources = NULL;
> + int done = 0;
> + char input;
> + unsigned long test_type;
> +
> + dp_connector_list = NULL;
Being global it's already initialized to NULL.
> + dp_connector_count = 0;
Same here.
> +
> + /* Setup input for keyboard handling - from input.c */
> + set_conio_terminal_mode();
> +
> + printf("ATTENTION:\r\n"
> + " Ensure that no display manager is running\r\n"
> + " App must be run as root in console/text mode\r\n"
> + " Continue? (Y/N)\r\n"
> + );
> + input = getchar();
> +
> + if (input != 'Y' && input != 'y')
> + goto exit;
> +
> + /* Set up DRM device before starting any tests */
> + status = setup_drm(&drv_fd);
> + if (status == -1)
> + goto exit;
> + /* Save the deafult mode that needs to be restored after every test */
> + save_default_mode(drv_fd);
> + /* Close the DRM device so it does not interfere with Link training */
> + status = close(drv_fd);
> + if (status)
> + printf("Error: Failed to close i915 driver\r\n");
> + setup_debugfs_files();
> +
> + printf("Waiting for test requests. 'X' or 'Q' exits\r\n");
> +
> + while (!done) {
I have a feeling that getchar() is blocked so kbhit() is useless...
> + if (kbhit()) {
> + input = getchar();
> + switch (input) {
> + case 'q':
> + case 'Q':
> + case 'x':
> + case 'X':
> + done = 1;
> + break;
> + }
> + }
> +
> + usleep(1000);
> +
> + if (check_test_active()) {
> +
> + /* Open the DRM device and restore default mode before
> + * each test
> + */
> + status = setup_drm(&drv_fd);
> + if (status == -1)
> + goto exit;
> + restore_default_mode(drv_fd);
> +
> + test_type = get_test_type();
> + if (/*test_type == DP_TEST_LINK_VIDEO_PATTERN || */
> + test_type == DP_TEST_LINK_EDID_READ) {
> + process_test_request(drv_fd, test_type,
> + mode_resources);
> + shutdown(drv_fd);
> + drmModeFreeResources(mode_resources);
> + mode_resources = NULL;
> + video_pattern_flag = false;
I do not like global variable that gets modified someplace else...
> + } else {
> + printf("Test type received is not EDID or"
> + "Video Pattern\r\n");
> + clear_test_active();
> + }
> + /* Close drm device after each test */
> + close(drv_fd);
> + usleep(10000);
Why wait for 10s?
> + }
> +
> + }
> +
> +exit:
> + cleanup_debugfs();
> + /* Set Up DRM device and restore default mode before exit */
> + setup_drm(&drv_fd);
> + restore_default_mode(drv_fd);
> + status = close(drv_fd);
> + if (status)
> + printf("Error: Failed to close i915 driver\r\n");
> + drmModeFreeCrtc(default_crtc);
> +
> + printf("Compliance testing application exiting.\r\n"
> + "If testing has been performed, you may want to restart\r\n"
> + "the system to ensure it returns to normal operation.\r\n");
> + igt_exit();
> +
> + return status;
> +
> +}
> --
> 1.9.1
>
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