drm/nouveau: port all engines to new engine module format

This is a HUGE commit, but it's not nearly as bad as it looks - any problems
can be isolated to a particular chipset and engine combination.  It was
simply too difficult to port each one at a time, the compat layers are
*already* ridiculous.

Most of the changes here are simply to the glue, the process for each of the
engine modules was to start with a standard skeleton and copy+paste the old
code into the appropriate places, fixing up variable names etc as needed.

v2: Marcin Slusarz <marcin.slusarz@gmail.com>
- fix find/replace bug in license header

v3: Ben Skeggs <bskeggs@redhat.com>
- bump indirect pushbuf size to 8KiB, 4KiB barely enough for userspace and
  left no space for kernel's requirements during GEM pushbuf submission.
- fix duplicate assignments noticed by clang

v4: Marcin Slusarz <marcin.slusarz@gmail.com>
- add sparse annotations to nv04_fifo_pause/nv04_fifo_start
- use ioread32_native/iowrite32_native for fifo control registers

v5: Ben Skeggs <bskeggs@redhat.com>
- rebase on v3.6-rc4, modified to keep copy engine fix intact
- nv10/fence: unmap fence bo before destroying
- fixed fermi regression when using nvidia gr fuc
- fixed typo in supported dma_mask checking

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nv04_display.c

@@ -32,9 +32,6 @@
 #include "nouveau_encoder.h"
 #include "nouveau_connector.h"
 
-static void nv04_vblank_crtc0_isr(struct drm_device *);
-static void nv04_vblank_crtc1_isr(struct drm_device *);
-
 int
 nv04_display_early_init(struct drm_device *dev)
 {
@@ -126,8 +123,6 @@ nv04_display_create(struct drm_device *dev)
 		func->save(encoder);
 	}
 
-	nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
-	nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
 	return 0;
 }
 
@@ -141,9 +136,6 @@ nv04_display_destroy(struct drm_device *dev)
 
 	NV_DEBUG_KMS(dev, "\n");
 
-	nouveau_irq_unregister(dev, 24);
-	nouveau_irq_unregister(dev, 25);
-
 	/* Turn every CRTC off. */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct drm_mode_set modeset = {
@@ -203,17 +195,3 @@ nv04_display_fini(struct drm_device *dev)
 	if (nv_two_heads(dev))
 		NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
 }
-
-static void
-nv04_vblank_crtc0_isr(struct drm_device *dev)
-{
-	nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
-	drm_handle_vblank(dev, 0);
-}
-
-static void
-nv04_vblank_crtc1_isr(struct drm_device *dev)
-{
-	nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
-	drm_handle_vblank(dev, 1);
-}