drm_test: Add drm_test package

Add drm_test Signed-off-by: arvin.zhu <arvin.zhu@starfivetech.com>
2022-08-05 09:57:29 +08:00
parent 6b8cb8042a
commit 4691306abf
16 changed files with 4397 additions and 0 deletions
@@ -0,0 +1,145 @@
+#define _GNU_SOURCE
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <time.h>
+#include <unistd.h>
+#include <signal.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#define DRM_MODULE_NAME "starfive"
+#define DRM_BUSID NULL
+
+struct buffer_object {
+    uint32_t width;
+    uint32_t height;
+    uint32_t pitch;
+    uint32_t handle;
+    uint32_t size;
+    uint32_t *vaddr;
+    uint32_t fb_id;
+};
+
+struct buffer_object buf[2] = {0};
+static int terminate = 0;
+
+static int modeset_create_fb(int fd, struct buffer_object *bo, uint32_t color)
+{
+    struct drm_mode_create_dumb create = {};
+    struct drm_mode_map_dumb map = {};
+    uint32_t i;
+
+    create.width = bo->width;
+    create.height = bo->height;
+    create.bpp = 32;
+    drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &create);
+
+    bo->pitch = create.pitch;
+    bo->size = create.size;
+    bo->handle = create.handle;
+    // {24, 32}
+    drmModeAddFB(fd, bo->width, bo->height, 32, 32, bo->pitch,
+               bo->handle, &bo->fb_id);
+
+    map.handle = create.handle;
+    drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &map);
+
+    bo->vaddr = mmap(0, create.size, PROT_READ | PROT_WRITE,
+            MAP_SHARED, fd, map.offset);
+
+    for (i = 0; i < (bo->size / 4); i++)
+        bo->vaddr[i] = color;
+
+    return 0;
+}
+
+static void modeset_destroy_fb(int fd, struct buffer_object *bo)
+{
+    struct drm_mode_destroy_dumb destroy = {};
+
+    drmModeRmFB(fd, bo->fb_id);
+
+    munmap(bo->vaddr, bo->size);
+
+    destroy.handle = bo->handle;
+    drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy);
+}
+
+static void modeset_page_flip_handler(int fd, uint32_t frame,
+                    uint32_t sec, uint32_t usec,
+                    void *data)
+{
+    static int i = 0;
+    uint32_t crtc_id = *(uint32_t *)data;
+
+    drmMsg("[%s,%d]: fd=%d, sec=%d, usec=%d,crtc_id=%d\n",__FUNCTION__,__LINE__,
+            fd, sec, usec, crtc_id);
+
+    i ^= 1;
+
+    drmModePageFlip(fd, crtc_id, buf[i].fb_id,
+            DRM_MODE_PAGE_FLIP_EVENT, data);
+
+    usleep(500000);
+}
+
+static void sigint_handler(int arg)
+{
+    terminate = 1;
+}
+
+int main(int argc, char **argv)
+{
+    int fd;
+    drmEventContext ev = {};
+    drmModeConnector *conn;
+    drmModeRes *res;
+    uint32_t conn_id;
+    uint32_t crtc_id;
+
+    signal(SIGINT, sigint_handler);
+
+    ev.version = DRM_EVENT_CONTEXT_VERSION;
+    ev.page_flip_handler = modeset_page_flip_handler;
+
+    fd = drmOpen(DRM_MODULE_NAME, DRM_BUSID);
+
+    res = drmModeGetResources(fd);
+    crtc_id = res->crtcs[0];
+    conn_id = res->connectors[0];
+
+    conn = drmModeGetConnector(fd, conn_id);
+    buf[0].width = conn->modes[0].hdisplay;
+    buf[0].height = conn->modes[0].vdisplay;
+    buf[1].width = conn->modes[0].hdisplay;
+    buf[1].height = conn->modes[0].vdisplay;
+
+    modeset_create_fb(fd, &buf[0], 0xff0000);
+    modeset_create_fb(fd, &buf[1], 0x0000ff);
+
+    drmModeSetCrtc(fd, crtc_id, buf[0].fb_id,
+            0, 0, &conn_id, 1, &conn->modes[0]);
+
+    drmModePageFlip(fd, crtc_id, buf[0].fb_id,
+            DRM_MODE_PAGE_FLIP_EVENT, &crtc_id);
+
+    while (!terminate) {
+        drmHandleEvent(fd, &ev);
+    }
+
+    modeset_destroy_fb(fd, &buf[1]);
+    modeset_destroy_fb(fd, &buf[0]);
+
+    drmModeFreeConnector(conn);
+    drmModeFreeResources(res);
+
+    close(fd);
+
+    return 0;
+}