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-rw-r--r--libdrm/xf86drmMode.c395
1 files changed, 395 insertions, 0 deletions
diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
new file mode 100644
index 00000000..a7241ffd
--- /dev/null
+++ b/libdrm/xf86drmMode.c
@@ -0,0 +1,395 @@
+/*
+ * \file xf86drmMode.c
+ * Header for DRM modesetting interface.
+ *
+ * \author Jakob Bornecrantz <wallbraker@gmail.com>
+ *
+ * \par Acknowledgements:
+ * Feb 2007, Dave Airlie <airlied@linux.ie>
+ */
+
+/*
+ * Copyright (c) <year> <copyright holders>
+ *
+ * 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 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.
+ *
+ */
+
+/*
+ * TODO the types we are after are defined in diffrent headers on diffrent
+ * platforms find which headers to include to get uint32_t
+ */
+#include <stdint.h>
+
+#include "xf86drmMode.h"
+#include "xf86drm.h"
+#include <drm.h>
+#include <string.h>
+
+/*
+ * Util functions
+ */
+
+void* drmAllocCpy(void *array, int count, int entry_size)
+{
+ char *r;
+ int i;
+
+ if (!count || !array || !entry_size)
+ return 0;
+
+ if (!(r = drmMalloc(count*entry_size)))
+ return 0;
+
+ for (i = 0; i < count; i++)
+ memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
+
+ return r;
+}
+
+/**
+ * Generate crtc and output ids.
+ *
+ * Will generate ids starting from 1 up to count if count is greater then 0.
+ */
+static uint32_t* drmAllocGenerate(int count)
+{
+ uint32_t *r;
+ int i;
+
+ if(0 <= count)
+ return 0;
+
+ if (!(r = drmMalloc(count*sizeof(*r))))
+ return 0;
+
+ for (i = 0; i < count; r[i] = ++i);
+
+ return 0;
+}
+
+/*
+ * A couple of free functions.
+ */
+
+void drmModeFreeModeInfo(struct drm_mode_modeinfo *ptr)
+{
+ if (!ptr)
+ return;
+
+ drmFree(ptr);
+}
+
+void drmModeFreeResources(drmModeResPtr ptr)
+{
+ if (!ptr)
+ return;
+
+ drmFree(ptr->modes);
+ drmFree(ptr);
+
+}
+
+void drmModeFreeFB(drmModeFBPtr ptr)
+{
+ if (!ptr)
+ return;
+
+ /* we might add more frees later. */
+ drmFree(ptr);
+}
+
+void drmModeFreeCrtc(drmModeCrtcPtr ptr)
+{
+ if (!ptr)
+ return;
+
+ drmFree(ptr);
+
+}
+
+void drmModeFreeOutput(drmModeOutputPtr ptr)
+{
+ if (!ptr)
+ return;
+
+ drmFree(ptr->modes);
+ drmFree(ptr);
+
+}
+
+/*
+ * ModeSetting functions.
+ */
+
+drmModeResPtr drmModeGetResources(int fd)
+{
+ struct drm_mode_card_res res;
+ int i;
+ drmModeResPtr r = 0;
+
+ memset(&res, 0, sizeof(struct drm_mode_card_res));
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
+ return 0;
+
+ if (res.count_fbs)
+ res.fb_id = drmMalloc(res.count_fbs*sizeof(uint32_t));
+ if (res.count_crtcs)
+ res.crtc_id = drmMalloc(res.count_crtcs*sizeof(uint32_t));
+ if (res.count_outputs)
+ res.output_id = drmMalloc(res.count_outputs*sizeof(uint32_t));
+ if (res.count_modes)
+ res.modes = drmMalloc(res.count_modes*sizeof(*res.modes));
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
+ r = NULL;
+ goto err_allocs;
+ }
+
+ /*
+ * return
+ */
+
+
+ if (!(r = drmMalloc(sizeof(*r))))
+ return 0;
+
+ r->count_fbs = res.count_fbs;
+ r->count_crtcs = res.count_crtcs;
+ r->count_outputs = res.count_outputs;
+ r->count_modes = res.count_modes;
+ /* TODO we realy should test if these allocs fails. */
+ r->fbs = drmAllocCpy(res.fb_id, res.count_fbs, sizeof(uint32_t));
+ r->crtcs = drmAllocCpy(res.crtc_id, res.count_crtcs, sizeof(uint32_t));
+ r->outputs = drmAllocCpy(res.output_id, res.count_outputs, sizeof(uint32_t));
+ r->modes = drmAllocCpy(res.modes, res.count_modes, sizeof(struct drm_mode_modeinfo));
+
+err_allocs:
+ drmFree(res.fb_id);
+ drmFree(res.crtc_id);
+ drmFree(res.output_id);
+ drmFree(res.modes);
+
+ return r;
+}
+
+int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
+ uint8_t bpp, uint32_t pitch, drmBO *bo, uint32_t *buf_id)
+{
+ struct drm_mode_fb_cmd f;
+ int ret;
+
+ f.width = width;
+ f.height = height;
+ f.pitch = pitch;
+ f.bpp = bpp;
+ f.depth = depth;
+ f.handle = bo->handle;
+
+ if (ret = ioctl(fd, DRM_IOCTL_MODE_ADDFB, &f))
+ return ret;
+
+ *buf_id = f.buffer_id;
+ return 0;
+}
+
+int drmModeRmFB(int fd, uint32_t bufferId)
+{
+ return ioctl(fd, DRM_IOCTL_MODE_RMFB, bufferId);
+}
+
+drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
+{
+ struct drm_mode_fb_cmd info;
+ drmModeFBPtr r;
+
+ info.buffer_id = buf;
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETFB, &info))
+ return NULL;
+
+ if (!(r = drmMalloc(sizeof(*r))))
+ return NULL;
+
+ r->buffer_id = info.buffer_id;
+ r->width = info.width;
+ r->height = info.height;
+ r->pitch = info.pitch;
+ r->bpp = info.bpp;
+ r->handle = info.handle;
+ r->depth = info.depth;
+
+ return r;
+}
+
+
+/*
+ * Crtc functions
+ */
+
+drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
+{
+ struct drm_mode_crtc crtc;
+ drmModeCrtcPtr r;
+ int i = 0;
+
+ crtc.count_outputs = 0;
+ crtc.outputs = 0;
+ crtc.count_possibles = 0;
+ crtc.possibles = 0;
+ crtc.crtc_id = crtcId;
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
+ return 0;
+
+ /*
+ * return
+ */
+
+ if (!(r = drmMalloc(sizeof(*r))))
+ return 0;
+
+ r->x = crtc.x;
+ r->y = crtc.y;
+ r->mode = crtc.mode;
+ r->buffer_id = crtc.fb_id;
+ r->gamma_size = crtc.gamma_size;
+ r->count_outputs = crtc.count_outputs;
+ r->count_possibles = crtc.count_possibles;
+ /* TODO we realy should test if these alloc & cpy fails. */
+ r->outputs = crtc.outputs;
+ r->possibles = crtc.possibles;
+
+ return r;
+
+err_allocs:
+
+ return 0;
+}
+
+
+int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
+ uint32_t x, uint32_t y, uint32_t modeId,
+ uint32_t *outputs, int count)
+{
+ struct drm_mode_crtc crtc;
+
+ crtc.count_outputs = 0;
+ crtc.outputs = 0;
+ crtc.count_possibles = 0;
+ crtc.possibles = 0;
+
+ crtc.x = x;
+ crtc.y = y;
+ crtc.crtc_id = crtcId;
+ crtc.fb_id = bufferId;
+ crtc.set_outputs = outputs;
+ crtc.count_outputs = count;
+ crtc.mode = modeId;
+
+ return ioctl(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
+}
+
+
+/*
+ * Output manipulation
+ */
+
+drmModeOutputPtr drmModeGetOutput(int fd, uint32_t output_id)
+{
+ struct drm_mode_get_output out;
+ drmModeOutputPtr r = 0;
+
+ out.output = output_id;
+ out.count_crtcs = 0;
+ out.crtcs = 0;
+ out.count_clones = 0;
+ out.clones = 0;
+ out.count_modes = 0;
+ out.modes = 0;
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETOUTPUT, &out))
+ return 0;
+
+ if (out.count_modes)
+ out.modes = drmMalloc(out.count_modes*sizeof(uint32_t));
+
+ if (ioctl(fd, DRM_IOCTL_MODE_GETOUTPUT, &out))
+ goto err_allocs;
+
+ if(!(r = drmMalloc(sizeof(*r))))
+ return 0;
+
+ r->connection = out.connection;
+ r->mmWidth = out.mm_width;
+ r->mmHeight = out.mm_height;
+ r->subpixel = out.subpixel;
+ r->count_crtcs = out.count_crtcs;
+ r->count_clones = out.count_clones;
+ r->count_modes = out.count_modes;
+ /* TODO we should test if these alloc & cpy fails. */
+ r->crtcs = out.crtcs;
+ r->clones = out.clones;
+ r->modes = drmAllocCpy(out.modes, out.count_modes, sizeof(uint32_t));
+ strncpy(r->name, out.name, DRM_OUTPUT_NAME_LEN);
+ r->name[DRM_OUTPUT_NAME_LEN-1] = 0;
+ return r;
+
+err_allocs:
+ drmFree(out.modes);
+
+ return 0;
+}
+
+uint32_t drmModeAddMode(int fd, struct drm_mode_modeinfo *mode_info)
+{
+ if (ioctl(fd, DRM_IOCTL_MODE_ADDMODE, mode_info))
+ return 0;
+
+ return mode_info->id;
+}
+
+int drmModeRmMode(int fd, uint32_t mode_id)
+{
+ return ioctl(fd, DRM_IOCTL_MODE_RMMODE, mode_id);
+}
+
+int drmModeAttachMode(int fd, uint32_t output_id, uint32_t mode_id)
+{
+
+ struct drm_mode_mode_cmd res;
+
+ res.output_id = output_id;
+ res.mode_id = mode_id;
+
+ return ioctl(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
+}
+
+int drmModeDetachMode(int fd, uint32_t output_id, uint32_t mode_id)
+{
+ struct drm_mode_mode_cmd res;
+
+ res.output_id = output_id;
+ res.mode_id = mode_id;
+
+ return ioctl(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
+}
+
+
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