4 files changed, 230 insertions, 0 deletions

diff --git a/src/gallium/winsys/nouveau/drm/Makefile b/src/gallium/winsys/nouveau/drm/Makefile
new file mode 100644
index 00000000000..71029858f75
--- /dev/null
+++ b/src/gallium/winsys/nouveau/drm/Makefile
@@ -0,0 +1,11 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = nouveaudrm
+
+C_SOURCES = nouveau_drm_api.c
+
+LIBRARY_INCLUDES = $(shell pkg-config libdrm libdrm_nouveau --cflags-only-I)
+LIBRARY_DEFINES = $(shell pkg-config libdrm libdrm_nouveau --cflags-only-other)
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/nouveau/drm/nouveau_dri.h b/src/gallium/winsys/nouveau/drm/nouveau_dri.h
new file mode 100644
index 00000000000..1207c2d609c
--- /dev/null
+++ b/src/gallium/winsys/nouveau/drm/nouveau_dri.h
@@ -0,0 +1,28 @@
+#ifndef _NOUVEAU_DRI_
+#define _NOUVEAU_DRI_
+
+#include "xf86drm.h"
+#include "drm.h"
+#include "nouveau_drm.h"
+
+struct nouveau_dri {
+	uint32_t device_id;	/**< \brief PCI device ID */
+	uint32_t width;		/**< \brief width in pixels of display */
+	uint32_t height;	/**< \brief height in scanlines of display */
+	uint32_t depth;		/**< \brief depth of display (8, 15, 16, 24) */
+	uint32_t bpp;		/**< \brief bit depth of display (8, 16, 24, 32) */
+
+	uint32_t bus_type;	/**< \brief ths bus type */
+	uint32_t bus_mode;	/**< \brief bus mode (used for AGP, maybe also for PCI-E ?) */
+
+	uint32_t front_offset;	/**< \brief front buffer offset */
+	uint32_t front_pitch;	/**< \brief front buffer pitch */
+	uint32_t back_offset;	/**< \brief private back buffer offset */
+	uint32_t back_pitch;	/**< \brief private back buffer pitch */
+	uint32_t depth_offset;	/**< \brief private depth buffer offset */
+	uint32_t depth_pitch;	/**< \brief private depth buffer pitch */
+
+};
+
+#endif
+
diff --git a/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c
new file mode 100644
index 00000000000..37f33875a5b
--- /dev/null
+++ b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c
@@ -0,0 +1,160 @@
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+#include "nouveau_drm_api.h"
+
+#include "nouveau_drmif.h"
+#include "nouveau_channel.h"
+#include "nouveau_bo.h"
+
+#include "nouveau/nouveau_winsys.h"
+#include "nouveau/nouveau_screen.h"
+
+static struct pipe_surface *
+dri_surface_from_handle(struct drm_api *api, struct pipe_screen *pscreen,
+                        unsigned handle, enum pipe_format format,
+                        unsigned width, unsigned height, unsigned pitch)
+{
+	struct pipe_surface *ps = NULL;
+	struct pipe_resource *pt = NULL;
+	struct pipe_resource tmpl;
+	struct winsys_handle whandle;
+	unsigned bind = (PIPE_BIND_SCANOUT |
+			 PIPE_BIND_RENDER_TARGET |
+			 PIPE_BIND_BLIT_DESTINATION |
+			 PIPE_BIND_BLIT_SOURCE);
+
+	memset(&tmpl, 0, sizeof(tmpl));
+	tmpl.bind = bind;
+	tmpl.target = PIPE_TEXTURE_2D;
+	tmpl.last_level = 0;
+	tmpl.depth0 = 1;
+	tmpl.format = format;
+	tmpl.width0 = width;
+	tmpl.height0 = height;
+
+	memset(&whandle, 0, sizeof(whandle));
+	whandle.stride = pitch;
+	whandle.handle = handle;
+
+	pt = pscreen->resource_from_handle(pscreen, &tmpl, &whandle);
+	if (!pt)
+		return NULL;
+
+	ps = pscreen->get_tex_surface(pscreen, pt, 0, 0, 0, bind);
+
+	/* we don't need the texture from this point on */
+	pipe_resource_reference(&pt, NULL);
+	return ps;
+}
+
+static struct pipe_surface *
+nouveau_dri1_front_surface(struct pipe_screen *screen)
+{
+	return nouveau_winsys_screen(screen)->front;
+}
+
+static struct dri1_api nouveau_dri1_api = {
+	nouveau_dri1_front_surface,
+};
+
+static void
+nouveau_drm_destroy_winsys(struct pipe_winsys *s)
+{
+	struct nouveau_winsys *nv_winsys = nouveau_winsys(s);
+	struct nouveau_screen *nv_screen= nouveau_screen(nv_winsys->pscreen);
+	nouveau_device_close(&nv_screen->device);
+	FREE(nv_winsys);
+}
+
+static struct pipe_screen *
+nouveau_drm_create_screen(struct drm_api *api, int fd,
+			  struct drm_create_screen_arg *arg)
+{
+	struct dri1_create_screen_arg *dri1 = (void *)arg;
+	struct nouveau_winsys *nvws;
+	struct pipe_winsys *ws;
+	struct nouveau_device *dev = NULL;
+	struct pipe_screen *(*init)(struct pipe_winsys *,
+				    struct nouveau_device *);
+	int ret;
+
+	ret = nouveau_device_open_existing(&dev, 0, fd, 0);
+	if (ret)
+		return NULL;
+
+	switch (dev->chipset & 0xf0) {
+	case 0x30:
+	case 0x40:
+	case 0x60:
+		init = nvfx_screen_create;
+		break;
+	case 0x50:
+	case 0x80:
+	case 0x90:
+	case 0xa0:
+		init = nv50_screen_create;
+		break;
+	default:
+		debug_printf("%s: unknown chipset nv%02x\n", __func__,
+			     dev->chipset);
+		return NULL;
+	}
+
+	nvws = CALLOC_STRUCT(nouveau_winsys);
+	if (!nvws) {
+		nouveau_device_close(&dev);
+		return NULL;
+	}
+	ws = &nvws->base;
+	ws->destroy = nouveau_drm_destroy_winsys;
+
+	nvws->pscreen = init(ws, dev);
+	if (!nvws->pscreen) {
+		ws->destroy(ws);
+		return NULL;
+	}
+
+	if (arg && arg->mode == DRM_CREATE_DRI1) {
+		struct nouveau_dri *nvdri = dri1->ddx_info;
+		enum pipe_format format;
+
+		if (nvdri->bpp == 16)
+			format = PIPE_FORMAT_B5G6R5_UNORM;
+		else
+			format = PIPE_FORMAT_B8G8R8A8_UNORM;
+
+		nvws->front = dri_surface_from_handle(api, nvws->pscreen,
+						      nvdri->front_offset,
+						      format, nvdri->width,
+						      nvdri->height,
+						      nvdri->front_pitch *
+						      (nvdri->bpp / 8));
+		if (!nvws->front) {
+			debug_printf("%s: error referencing front buffer\n",
+				     __func__);
+			ws->destroy(ws);
+			return NULL;
+		}
+
+		dri1->api = &nouveau_dri1_api;
+	}
+
+	return nvws->pscreen;
+}
+
+static struct drm_api nouveau_drm_api_hooks = {
+	.name = "nouveau",
+	.driver_name = "nouveau",
+	.create_screen = nouveau_drm_create_screen,
+	.destroy = NULL,
+};
+
+struct drm_api *
+drm_api_create() {
+	return &nouveau_drm_api_hooks;
+}
+
diff --git a/src/gallium/winsys/nouveau/drm/nouveau_drm_api.h b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.h
new file mode 100644
index 00000000000..a91aad7df8e
--- /dev/null
+++ b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.h
@@ -0,0 +1,31 @@
+#ifndef __NOUVEAU_DRM_API_H__
+#define __NOUVEAU_DRM_API_H__
+
+#include "state_tracker/drm_api.h"
+#include "state_tracker/dri1_api.h"
+
+#include "util/u_simple_screen.h"
+
+#include "nouveau_dri.h"
+
+struct nouveau_winsys {
+	struct pipe_winsys base;
+
+	struct pipe_screen *pscreen;
+
+	struct pipe_surface *front;
+};
+
+static INLINE struct nouveau_winsys *
+nouveau_winsys(struct pipe_winsys *ws)
+{
+	return (struct nouveau_winsys *)ws;
+}
+
+static INLINE struct nouveau_winsys *
+nouveau_winsys_screen(struct pipe_screen *pscreen)
+{
+	return nouveau_winsys(pscreen->winsys);
+}
+
+#endif