From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 4 Aug 2010 05:45:33 +0000 (+1000)
Subject: drm/nvc0: rudimentary instmem support
X-Git-Tag: firefly_0821_release~9833^2~621^2~4^2~34
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=68b83a939cf8ed5466d11b7e9bfaa1dd22c11469;p=firefly-linux-kernel-4.4.55.git
drm/nvc0: rudimentary instmem support
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
diff --git a/drivers/gpu/drm/nouveau/nvc0_instmem.c b/drivers/gpu/drm/nouveau/nvc0_instmem.c
index c6ffc16dc441..e2a0bb84d910 100644
--- a/drivers/gpu/drm/nouveau/nvc0_instmem.c
+++ b/drivers/gpu/drm/nouveau/nvc0_instmem.c
@@ -30,29 +30,112 @@ int
nvc0_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj,
uint32_t *size)
{
+ int ret;
+
+ *size = ALIGN(*size, 4096);
+ if (*size == 0)
+ return -EINVAL;
+
+ ret = nouveau_bo_new(dev, NULL, *size, 0, TTM_PL_FLAG_VRAM, 0, 0x0000,
+ true, false, &gpuobj->im_backing);
+ if (ret) {
+ NV_ERROR(dev, "error getting PRAMIN backing pages: %d\n", ret);
+ return ret;
+ }
+
+ ret = nouveau_bo_pin(gpuobj->im_backing, TTM_PL_FLAG_VRAM);
+ if (ret) {
+ NV_ERROR(dev, "error pinning PRAMIN backing VRAM: %d\n", ret);
+ nouveau_bo_ref(NULL, &gpuobj->im_backing);
+ return ret;
+ }
+
+ gpuobj->im_backing_start = gpuobj->im_backing->bo.mem.mm_node->start;
+ gpuobj->im_backing_start <<= PAGE_SHIFT;
return 0;
}
void
nvc0_instmem_clear(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ if (gpuobj && gpuobj->im_backing) {
+ if (gpuobj->im_bound)
+ dev_priv->engine.instmem.unbind(dev, gpuobj);
+ nouveau_bo_unpin(gpuobj->im_backing);
+ nouveau_bo_ref(NULL, &gpuobj->im_backing);
+ gpuobj->im_backing = NULL;
+ }
}
int
nvc0_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ uint32_t pte, pte_end;
+ uint64_t vram;
+
+ if (!gpuobj->im_backing || !gpuobj->im_pramin || gpuobj->im_bound)
+ return -EINVAL;
+
+ NV_DEBUG(dev, "st=0x%lx sz=0x%lx\n",
+ gpuobj->im_pramin->start, gpuobj->im_pramin->size);
+
+ pte = gpuobj->im_pramin->start >> 12;
+ pte_end = (gpuobj->im_pramin->size >> 12) + pte;
+ vram = gpuobj->im_backing_start;
+
+ NV_DEBUG(dev, "pramin=0x%lx, pte=%d, pte_end=%d\n",
+ gpuobj->im_pramin->start, pte, pte_end);
+ NV_DEBUG(dev, "first vram page: 0x%08x\n", gpuobj->im_backing_start);
+
+ while (pte < pte_end) {
+ nv_wr32(dev, 0x702000 + (pte * 8), (vram >> 8) | 1);
+ nv_wr32(dev, 0x702004 + (pte * 8), 0);
+ vram += 4096;
+ pte++;
+ }
+ dev_priv->engine.instmem.flush(dev);
+
+ if (1) {
+ u32 chan = nv_rd32(dev, 0x1700) << 16;
+ nv_wr32(dev, 0x100cb8, (chan + 0x1000) >> 8);
+ nv_wr32(dev, 0x100cbc, 0x80000005);
+ }
+
+ gpuobj->im_bound = 1;
return 0;
}
int
nvc0_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ uint32_t pte, pte_end;
+
+ if (gpuobj->im_bound == 0)
+ return -EINVAL;
+
+ pte = gpuobj->im_pramin->start >> 12;
+ pte_end = (gpuobj->im_pramin->size >> 12) + pte;
+ while (pte < pte_end) {
+ nv_wr32(dev, 0x702000 + (pte * 8), 0);
+ nv_wr32(dev, 0x702004 + (pte * 8), 0);
+ pte++;
+ }
+ dev_priv->engine.instmem.flush(dev);
+
+ gpuobj->im_bound = 0;
return 0;
}
void
nvc0_instmem_flush(struct drm_device *dev)
{
+ nv_wr32(dev, 0x070000, 1);
+ if (!nv_wait(0x070000, 0x00000001, 0x00000000))
+ NV_ERROR(dev, "PRAMIN flush timeout\n");
}
int
@@ -69,6 +152,54 @@ nvc0_instmem_resume(struct drm_device *dev)
int
nvc0_instmem_init(struct drm_device *dev)
{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ u64 chan, pgt3, imem, lim3 = dev_priv->ramin_size - 1;
+ int ret, i;
+
+ dev_priv->ramin_rsvd_vram = 1 * 1024 * 1024;
+ chan = dev_priv->vram_size - dev_priv->ramin_rsvd_vram;
+ imem = 4096 + 4096 + 32768;
+
+ nv_wr32(dev, 0x001700, chan >> 16);
+
+ /* channel setup */
+ nv_wr32(dev, 0x700200, lower_32_bits(chan + 0x1000));
+ nv_wr32(dev, 0x700204, upper_32_bits(chan + 0x1000));
+ nv_wr32(dev, 0x700208, lower_32_bits(lim3));
+ nv_wr32(dev, 0x70020c, upper_32_bits(lim3));
+
+ /* point pgd -> pgt */
+ nv_wr32(dev, 0x701000, 0);
+ nv_wr32(dev, 0x701004, ((chan + 0x2000) >> 8) | 1);
+
+ /* point pgt -> physical vram for channel */
+ pgt3 = 0x2000;
+ for (i = 0; i < dev_priv->ramin_rsvd_vram; i += 4096, pgt3 += 8) {
+ nv_wr32(dev, 0x700000 + pgt3, ((chan + i) >> 8) | 1);
+ nv_wr32(dev, 0x700004 + pgt3, 0);
+ }
+
+ /* clear rest of pgt */
+ for (; i < dev_priv->ramin_size; i += 4096, pgt3 += 8) {
+ nv_wr32(dev, 0x700000 + pgt3, 0);
+ nv_wr32(dev, 0x700004 + pgt3, 0);
+ }
+
+ /* point bar3 at the channel */
+ nv_wr32(dev, 0x001714, 0xc0000000 | (chan >> 12));
+
+ /* Global PRAMIN heap */
+ ret = drm_mm_init(&dev_priv->ramin_heap, imem,
+ dev_priv->ramin_size - imem);
+ if (ret) {
+ NV_ERROR(dev, "Failed to init RAMIN heap\n");
+ return -ENOMEM;
+ }
+
+ /*XXX: incorrect, but needed to make hash func "work" */
+ dev_priv->ramht_offset = 0x10000;
+ dev_priv->ramht_bits = 9;
+ dev_priv->ramht_size = (1 << dev_priv->ramht_bits);
return 0;
}