drm/nouveau: Add module options to disable acceleration.
noaccel=1 disables all acceleration and doesn't even attempt
initialising PGRAPH+PFIFO, nofbaccel=1 only makes fbcon unaccelerated.
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index fc692e5..da3b93b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -75,6 +75,14 @@
int nouveau_ignorelid = 0;
module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
+MODULE_PARM_DESC(noagp, "Disable all acceleration");
+int nouveau_noaccel = 0;
+module_param_named(noaccel, nouveau_noaccel, int, 0400);
+
+MODULE_PARM_DESC(noagp, "Disable fbcon acceleration");
+int nouveau_nofbaccel = 0;
+module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
+
MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
"\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, NTSC-M, NTSC-J,\n"
"\t\t\thd480i, hd480p, hd576i, hd576p, hd720p, hd1080i.\n"
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 6b96904..5445cef 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -678,6 +678,8 @@
extern char *nouveau_vbios;
extern int nouveau_ctxfw;
extern int nouveau_ignorelid;
+extern int nouveau_nofbaccel;
+extern int nouveau_noaccel;
/* nouveau_state.c */
extern void nouveau_preclose(struct drm_device *dev, struct drm_file *);
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 0b05c86..eddadac 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -267,8 +267,12 @@
dev_priv->fbdev_info = info;
strcpy(info->fix.id, "nouveaufb");
- info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
- FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_IMAGEBLIT;
+ if (nouveau_nofbaccel)
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
+ else
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT |
+ FBINFO_HWACCEL_IMAGEBLIT;
info->fbops = &nouveau_fbcon_ops;
info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
dev_priv->vm_vram_base;
@@ -316,7 +320,7 @@
par->nouveau_fb = nouveau_fb;
par->dev = dev;
- if (dev_priv->channel) {
+ if (dev_priv->channel && !nouveau_nofbaccel) {
switch (dev_priv->card_type) {
case NV_50:
nv50_fbcon_accel_init(info);
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index f2d0187..241e24d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -427,15 +427,19 @@
if (ret)
goto out_timer;
- /* PGRAPH */
- ret = engine->graph.init(dev);
- if (ret)
- goto out_fb;
+ if (nouveau_noaccel)
+ engine->graph.accel_blocked = true;
+ else {
+ /* PGRAPH */
+ ret = engine->graph.init(dev);
+ if (ret)
+ goto out_fb;
- /* PFIFO */
- ret = engine->fifo.init(dev);
- if (ret)
- goto out_graph;
+ /* PFIFO */
+ ret = engine->fifo.init(dev);
+ if (ret)
+ goto out_graph;
+ }
/* this call irq_preinstall, register irq handler and
* call irq_postinstall
@@ -479,9 +483,11 @@
out_irq:
drm_irq_uninstall(dev);
out_fifo:
- engine->fifo.takedown(dev);
+ if (!nouveau_noaccel)
+ engine->fifo.takedown(dev);
out_graph:
- engine->graph.takedown(dev);
+ if (!nouveau_noaccel)
+ engine->graph.takedown(dev);
out_fb:
engine->fb.takedown(dev);
out_timer:
@@ -518,8 +524,10 @@
dev_priv->channel = NULL;
}
- engine->fifo.takedown(dev);
- engine->graph.takedown(dev);
+ if (!nouveau_noaccel) {
+ engine->fifo.takedown(dev);
+ engine->graph.takedown(dev);
+ }
engine->fb.takedown(dev);
engine->timer.takedown(dev);
engine->mc.takedown(dev);