gallium: Update the drm_api.

Make it possible to pass state-tracker-specific data to the
init_screen function, and even open the door for device-specific
state-tracker screen initialization.

Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>

src/gallium/include/state_tracker/drm_api.h

@@ -10,13 +10,30 @@ struct pipe_buffer;
 struct pipe_context;
 struct pipe_texture;
 
+enum drm_create_screen_mode {
+	DRM_CREATE_NORMAL = 0,
+	DRM_CREATE_DRI1,
+	DRM_CREATE_DRIVER = 1024,
+	DRM_CREATE_MAX
+};
+
+/**
+ * Modes other than DRM_CREATE_NORMAL derive from this struct.
+ */
+/*@{*/
+struct drm_create_screen_arg {
+	enum drm_create_screen_mode mode;
+};
+/*@}*/
+
 struct drm_api
 {
 	/**
 	 * Special buffer functions
 	 */
 	/*@{*/
-	struct pipe_screen*  (*create_screen)(int drmFB, int pciID);
+	struct pipe_screen*  (*create_screen)(int drm_fd,
+					      struct drm_create_screen_arg *arg);
 	struct pipe_context* (*create_context)(struct pipe_screen *screen);
 	/*@}*/
 

src/gallium/state_trackers/dri2/dri_screen.c

@@ -67,37 +67,6 @@ static const __DRIextension *dri_screen_extensions[] = {
     NULL
 };
 
-
-static void
-dri_get_drm_minor(struct dri_screen *screen)
-{
-   /* TODO get the real minor */
-   screen->minor = 0;
-}
-
-
-static void
-dri_get_device_id(struct dri_screen *screen)
-{
-   char path[512];
-   FILE *file;
-
-   /*
-    * There must be a better way to get the deviceID.
-    * XXX this only works on Linux.
-    */
-   snprintf(path, sizeof(path), "/sys/class/drm/card%d/device/device", screen->minor);
-   file = fopen(path, "r");
-   if (!file) {
-      return;
-   }
-
-   fgets(path, sizeof(path), file);
-   sscanf(path, "%x", &screen->deviceID);
-   fclose(file);
-}
-
-
 static const __DRIconfig **
 dri_fill_in_modes(__DRIscreenPrivate *psp,
                   unsigned pixel_bits, unsigned depth_bits,
@@ -212,13 +181,11 @@ dri_init_screen2(__DRIscreenPrivate *sPriv)
 
    screen->sPriv = sPriv;
    screen->fd = sPriv->fd;
-   dri_get_drm_minor(screen);
-   dri_get_device_id(screen);
    sPriv->private = (void *) screen;
    sPriv->extensions = dri_screen_extensions;
 
 
-   screen->pipe_screen = drm_api_hooks.create_screen(screen->fd, screen->deviceID);
+   screen->pipe_screen = drm_api_hooks.create_screen(screen->fd, NULL);
    if (!screen->pipe_screen) {
       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
       goto fail;

src/gallium/state_trackers/dri2/dri_screen.h

@@ -54,9 +54,7 @@ struct dri_screen
    struct dri_context *dummyContext;
 
    /* drm */
-   int deviceID;
    int fd;
-   int minor;
 
    /* gallium */
    struct pipe_winsys *pipe_winsys;

src/gallium/state_trackers/egl/egl_tracker.c

@@ -146,7 +146,7 @@ drm_initialize(_EGLDriver *drv, EGLDisplay dpy, EGLint *major, EGLint *minor)
 	dev->drmFD = fd;
 	drm_get_device_id(dev);
 
-	dev->screen = drm_api_hooks.create_screen(dev->drmFD, dev->deviceID);
+	dev->screen = drm_api_hooks.create_screen(dev->drmFD, NULL);
 	if (!dev->screen)
 		goto err_screen;
 	dev->winsys = dev->screen->winsys;

src/gallium/state_trackers/xorg/xorg_driver.c

@@ -476,7 +476,7 @@ ScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
     }
 
     if (!ms->screen) {
-	ms->screen = drm_api_hooks.create_screen(ms->fd, ms->PciInfo->device_id);
+	ms->screen = drm_api_hooks.create_screen(ms->fd, NULL);
 
 	if (!ms->screen) {
 	    FatalError("Could not init pipe_screen\n");

src/gallium/winsys/drm/intel/gem/intel_be_api.h

@@ -8,7 +8,8 @@
 
 #include "intel_be_device.h"
 
-struct pipe_screen *intel_be_create_screen(int drmFD, int pciID);
+struct pipe_screen *intel_be_create_screen(int drmFD,
+					   struct drm_create_screen_arg *arg);
 struct pipe_context *intel_be_create_context(struct pipe_screen *screen);
 
 #endif

src/gallium/winsys/drm/intel/gem/intel_be_device.c

@@ -14,6 +14,7 @@
 #include "softpipe/sp_winsys.h"
 
 #include "intel_be_api.h"
+#include <stdio.h>
 
 /*
  * Buffer
@@ -290,11 +291,42 @@ intel_be_init_device(struct intel_be_device *dev, int fd, unsigned id)
 	return true;
 }
 
+static void
+intel_be_get_device_id(unsigned int *device_id)
+{
+   char path[512];
+   FILE *file;
+
+   /*
+    * FIXME: Fix this up to use a drm ioctl or whatever.
+    */
+
+   snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
+   file = fopen(path, "r");
+   if (!file) {
+      return;
+   }
+
+   fgets(path, sizeof(path), file);
+   sscanf(path, "%x", device_id);
+   fclose(file);
+}
+
 struct pipe_screen *
-intel_be_create_screen(int drmFD, int deviceID)
+intel_be_create_screen(int drmFD, struct drm_create_screen_arg *arg)
 {
 	struct intel_be_device *dev;
 	struct pipe_screen *screen;
+	unsigned int deviceID;
+
+	if (arg != NULL) {
+		switch(arg->mode) {
+		case DRM_CREATE_NORMAL:
+			break;
+		default:
+			return NULL;
+		}
+	}
 
 	/* Allocate the private area */
 	dev = malloc(sizeof(*dev));
@@ -302,6 +334,7 @@ intel_be_create_screen(int drmFD, int deviceID)
 		return NULL;
 	memset(dev, 0, sizeof(*dev));
 
+	intel_be_get_device_id(&deviceID);
 	intel_be_init_device(dev, drmFD, deviceID);
 
 	if (dev->softpipe) {

src/gallium/winsys/drm/nouveau/dri/nouveau_screen.c

@@ -267,7 +267,7 @@ nouveau_screen_create(__DRIscreenPrivate *psp)
 
 	nouveau_device_open_existing(&nv_screen->device, 0, psp->fd, 0);
 
-	nv_screen->pscreen = drm_api_hooks.create_screen(psp->fd, 0);
+	nv_screen->pscreen = drm_api_hooks.create_screen(psp->fd, NULL);
 	if (!nv_screen->pscreen) {
 		FREE(nv_screen);
 		return NULL;

src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c

@@ -8,7 +8,7 @@
 #include "nouveau_bo.h"
 
 static struct pipe_screen *
-nouveau_drm_create_screen(int fd, int pciid)
+nouveau_drm_create_screen(int fd, struct drm_create_screen_arg *arg)
 {
 	struct pipe_winsys *ws;
 	struct nouveau_winsys *nvws;

src/gallium/winsys/drm/radeon/core/radeon_drm.c

@@ -31,7 +31,8 @@
 #include "radeon_drm.h"
 
 /* Create a pipe_screen. */
-struct pipe_screen* radeon_create_screen(int drmFB, int pciID)
+struct pipe_screen* radeon_create_screen(int drmFB,
+					 struct drm_create_screen_arg *arg )
 {
     struct radeon_winsys* winsys = radeon_pipe_winsys(drmFB);
 

src/gallium/winsys/drm/radeon/core/radeon_drm.h

@@ -40,7 +40,8 @@
 #include "radeon_r300.h"
 #include "radeon_winsys_softpipe.h"
 
-struct pipe_screen* radeon_create_screen(int drmFB, int pciID);
+struct pipe_screen* radeon_create_screen(int drmFB,
+					 struct drm_create_screen_arg *arg);
 
 struct pipe_context* radeon_create_context(struct pipe_screen* screen);