checkpoint commit: added getresources, crtc and output

This adds the user interfaces from Jakob and hooks them up for 3 ioctls
GetResources, GetCrtc and GetOutput.

I've made the ids for everything fbs, crtcs, outputs and modes go via idr as
per krh's suggestion on irc as it make the code nice and consistent.

1 files changed, 407 insertions, 0 deletions

diff --git a/libdrm/xf86drmMode.c b/libdrm/xf86drmMode.c
new file mode 100644
index 00000000..b48ca838
--- /dev/null
+++ b/libdrm/xf86drmMode.c
@@ -0,0 +1,407 @@
+/*
+ * \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>
+
+/*
+ * 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 drmModeFreeFrameBuffer(drmModeFrameBufferPtr 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;
+
+	res.count_crtcs   = 0;
+	res.count_outputs = 0;
+	res.count_modes   = 0;
+	res.modes         = 0;
+
+	if (ioctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
+		return 0;
+
+	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))
+		goto err_allocs;
+
+	/*
+	 * return
+	 */
+
+
+	if (!(r = drmMalloc(sizeof(*r))))
+		return 0;
+
+	r->frameBufferId = res.fb_id;
+	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->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));
+
+	drmFree(res.crtc_id);
+	drmFree(res.output_id);
+	drmFree(res.modes);
+
+	return r;
+
+err_allocs:
+	drmFree(res.crtc_id);
+	drmFree(res.output_id);
+	drmFree(res.modes);
+
+	return 0;
+}
+
+#if 0
+int drmModeForceProbe(int fd, uint32_t outputId)
+{
+	/* TODO impl/keep? */
+}
+
+drmModeFrameBufferPtr drmModeGetFrameBuffer(int fd, uint32_t buf)
+{
+//	struct drm_mode_fb_cmd info;
+	drmModeFrameBufferPtr r;
+
+	//	if (ioctl(fd, DRM_IOCTL_MODE_GETFRAMEBUFFER, &info))
+		return 0;
+
+	if (!(r = drmMalloc(sizeof(*r))))
+		return 0;
+
+	/* TODO change to new code
+	r->minWidth  = info.minWidth;
+	r->maxWidth  = info.maxWidth;
+	r->minHeight = info.minHeight;
+	r->maxHeight = info.maxHeight;*/
+
+	return r;
+}
+
+uint32_t drmModeNewFrameBuffer(int fd, uint32_t width, uint32_t height,
+		uint8_t bpp, uint32_t pitch, drmBO *bo)
+{
+	drm_mode_fb_cmd_t f;
+
+	f.handle = bo->handle;
+	f.width  = width;
+	f.height = height;
+	f.pitch  = pitch;
+
+	//	if (ioctl(fd, DRM_IOCTL_MODE_NEWFRAMEBUFFER, &f))
+		return 0;
+
+	return f.bufferId;
+}
+
+int drmModeDesFrameBuffer(int fd, uint32_t bufferId)
+{
+  //	return ioctl(fd, DRM_IOCTL_MODE_DESFRAMEBUFFER, bufferId);
+}
+
+#endif
+/*
+ * Crtc function.
+ */
+
+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->width           = crtc.width;
+//	r->height          = crtc.height;
+	r->bufferId        = 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;
+}
+
+#if 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.crtcId        = crtcId;
+	crtc.bufferId      = bufferId;
+	crtc.set_outputs   = outputs;
+	crtc.count_outputs = count;
+	crtc.mode          = modeId;
+
+	//	return ioctl(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
+}
+
+drmModeGammaTriplePtr drmModeGetCrtcGamma(int fd, uint32_t crtc, int *count)
+{
+	/* TODO impl */
+}
+
+int drmModeSetCrtcGamma(int fd, uint32_t crtcId,
+		drmModeGammaTriplePtr ptr, int count)
+{
+	/* TODO impl */
+}
+
+#endif
+/*
+ * 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));
+
+	return r;
+
+err_allocs:
+	drmFree(out.modes);
+
+	return 0;
+}
+
+#if 0
+uint32_t drmModeNewMode(int fd, struct drm_mode_modeinfo *modeInfo)
+{
+	/* TODO impl */
+}
+
+int drmModeDesMode(int fd, uint32_t modeId)
+{
+  //	return ioctl(fd, DRM_IOCTL_MODE_DESMODE, modeId);
+}
+
+int drmModeAddMode(int fd, uint32_t outputId, uint32_t modeId)
+{
+
+	drm_mode_outputmode_t res;
+
+	res.outputId = outputId;
+	res.modeId = modeId;
+
+	//	return ioctl(fd, DRM_IOCTL_MODE_ADDMODE, &res);
+}
+
+int drmModeDelMode(int fd, uint32_t outputId, uint32_t modeId)
+{
+	drm_mode_outputmode_t res;
+
+	res.outputId = outputId;
+	res.modeId = modeId;
+
+	//	return ioctl(fd, DRM_IOCTL_MODE_DELMODE, &res);
+}
+
+#endif
+