drm/nouveau/ttm: untangle code to support accelerated buffer moves
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 6d66314..6e78b1a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -36,6 +36,7 @@
#include "nouveau_mm.h"
#include "nouveau_vm.h"
#include "nouveau_fence.h"
+#include "nouveau_ramht.h"
#include <linux/log2.h>
#include <linux/slab.h>
@@ -511,6 +512,17 @@
}
static int
+nvc0_bo_move_init(struct nouveau_channel *chan, u32 handle)
+{
+ int ret = RING_SPACE(chan, 2);
+ if (ret == 0) {
+ BEGIN_NVC0(chan, NvSubCopy, 0x0000, 1);
+ OUT_RING (chan, handle);
+ }
+ return ret;
+}
+
+static int
nvc0_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
struct ttm_mem_reg *old_mem, struct ttm_mem_reg *new_mem)
{
@@ -528,17 +540,17 @@
if (ret)
return ret;
- BEGIN_NVC0(chan, NvSubM2MF, 0x0238, 2);
+ BEGIN_NVC0(chan, NvSubCopy, 0x0238, 2);
OUT_RING (chan, upper_32_bits(dst_offset));
OUT_RING (chan, lower_32_bits(dst_offset));
- BEGIN_NVC0(chan, NvSubM2MF, 0x030c, 6);
+ BEGIN_NVC0(chan, NvSubCopy, 0x030c, 6);
OUT_RING (chan, upper_32_bits(src_offset));
OUT_RING (chan, lower_32_bits(src_offset));
OUT_RING (chan, PAGE_SIZE); /* src_pitch */
OUT_RING (chan, PAGE_SIZE); /* dst_pitch */
OUT_RING (chan, PAGE_SIZE); /* line_length */
OUT_RING (chan, line_count);
- BEGIN_NVC0(chan, NvSubM2MF, 0x0300, 1);
+ BEGIN_NVC0(chan, NvSubCopy, 0x0300, 1);
OUT_RING (chan, 0x00100110);
page_count -= line_count;
@@ -550,6 +562,28 @@
}
static int
+nv50_bo_move_init(struct nouveau_channel *chan, u32 handle)
+{
+ int ret = nouveau_notifier_alloc(chan, NvNotify0, 32, 0xfe0, 0x1000,
+ &chan->m2mf_ntfy);
+ if (ret == 0) {
+ ret = RING_SPACE(chan, 6);
+ if (ret == 0) {
+ BEGIN_NV04(chan, NvSubCopy, 0x0000, 1);
+ OUT_RING (chan, handle);
+ BEGIN_NV04(chan, NvSubCopy, 0x0180, 3);
+ OUT_RING (chan, NvNotify0);
+ OUT_RING (chan, NvDmaFB);
+ OUT_RING (chan, NvDmaFB);
+ } else {
+ nouveau_ramht_remove(chan, NvNotify0);
+ }
+ }
+
+ return ret;
+}
+
+static int
nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
struct ttm_mem_reg *old_mem, struct ttm_mem_reg *new_mem)
{
@@ -573,7 +607,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, 0x0200, 7);
+ BEGIN_NV04(chan, NvSubCopy, 0x0200, 7);
OUT_RING (chan, 0);
OUT_RING (chan, 0);
OUT_RING (chan, stride);
@@ -586,7 +620,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, 0x0200, 1);
+ BEGIN_NV04(chan, NvSubCopy, 0x0200, 1);
OUT_RING (chan, 1);
}
if (old_mem->mem_type == TTM_PL_VRAM &&
@@ -595,7 +629,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, 0x021c, 7);
+ BEGIN_NV04(chan, NvSubCopy, 0x021c, 7);
OUT_RING (chan, 0);
OUT_RING (chan, 0);
OUT_RING (chan, stride);
@@ -608,7 +642,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, 0x021c, 1);
+ BEGIN_NV04(chan, NvSubCopy, 0x021c, 1);
OUT_RING (chan, 1);
}
@@ -616,10 +650,10 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, 0x0238, 2);
+ BEGIN_NV04(chan, NvSubCopy, 0x0238, 2);
OUT_RING (chan, upper_32_bits(src_offset));
OUT_RING (chan, upper_32_bits(dst_offset));
- BEGIN_NV04(chan, NvSubM2MF, 0x030c, 8);
+ BEGIN_NV04(chan, NvSubCopy, 0x030c, 8);
OUT_RING (chan, lower_32_bits(src_offset));
OUT_RING (chan, lower_32_bits(dst_offset));
OUT_RING (chan, stride);
@@ -628,7 +662,7 @@
OUT_RING (chan, height);
OUT_RING (chan, 0x00000101);
OUT_RING (chan, 0x00000000);
- BEGIN_NV04(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
+ BEGIN_NV04(chan, NvSubCopy, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
OUT_RING (chan, 0);
length -= amount;
@@ -639,6 +673,24 @@
return 0;
}
+static int
+nv04_bo_move_init(struct nouveau_channel *chan, u32 handle)
+{
+ int ret = nouveau_notifier_alloc(chan, NvNotify0, 32, 0xfe0, 0x1000,
+ &chan->m2mf_ntfy);
+ if (ret == 0) {
+ ret = RING_SPACE(chan, 4);
+ if (ret == 0) {
+ BEGIN_NV04(chan, NvSubCopy, 0x0000, 1);
+ OUT_RING (chan, handle);
+ BEGIN_NV04(chan, NvSubCopy, 0x0180, 1);
+ OUT_RING (chan, NvNotify0);
+ }
+ }
+
+ return ret;
+}
+
static inline uint32_t
nouveau_bo_mem_ctxdma(struct ttm_buffer_object *bo,
struct nouveau_channel *chan, struct ttm_mem_reg *mem)
@@ -661,7 +713,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
+ BEGIN_NV04(chan, NvSubCopy, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
OUT_RING (chan, nouveau_bo_mem_ctxdma(bo, chan, old_mem));
OUT_RING (chan, nouveau_bo_mem_ctxdma(bo, chan, new_mem));
@@ -673,7 +725,7 @@
if (ret)
return ret;
- BEGIN_NV04(chan, NvSubM2MF,
+ BEGIN_NV04(chan, NvSubCopy,
NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
OUT_RING (chan, src_offset);
OUT_RING (chan, dst_offset);
@@ -683,7 +735,7 @@
OUT_RING (chan, line_count);
OUT_RING (chan, 0x00000101);
OUT_RING (chan, 0x00000000);
- BEGIN_NV04(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
+ BEGIN_NV04(chan, NvSubCopy, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
OUT_RING (chan, 0);
page_count -= line_count;
@@ -743,16 +795,7 @@
goto out;
}
- if (dev_priv->card_type < NV_50)
- ret = nv04_bo_move_m2mf(chan, bo, &bo->mem, new_mem);
- else
- if (dev_priv->card_type < NV_C0)
- ret = nv50_bo_move_m2mf(chan, bo, &bo->mem, new_mem);
- else
- if (dev_priv->card_type < NV_E0)
- ret = nvc0_bo_move_m2mf(chan, bo, &bo->mem, new_mem);
- else
- ret = nve0_bo_move_copy(chan, bo, &bo->mem, new_mem);
+ ret = dev_priv->ttm.move(chan, bo, &bo->mem, new_mem);
if (ret == 0) {
ret = nouveau_bo_move_accel_cleanup(chan, nvbo, evict,
no_wait_reserve,
@@ -764,6 +807,42 @@
return ret;
}
+void
+nouveau_bo_move_init(struct nouveau_channel *chan)
+{
+ struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
+ static const struct {
+ const char *name;
+ u32 oclass;
+ int (*exec)(struct nouveau_channel *,
+ struct ttm_buffer_object *,
+ struct ttm_mem_reg *, struct ttm_mem_reg *);
+ int (*init)(struct nouveau_channel *, u32 handle);
+ } _methods[] = {
+ { "COPY", 0xa0b5, nve0_bo_move_copy, nvc0_bo_move_init },
+ { "M2MF", 0x9039, nvc0_bo_move_m2mf, nvc0_bo_move_init },
+ { "M2MF", 0x5039, nv50_bo_move_m2mf, nv50_bo_move_init },
+ { "M2MF", 0x0039, nv04_bo_move_m2mf, nv04_bo_move_init },
+ {}
+ }, *mthd = _methods;
+ const char *name = "CPU";
+ int ret;
+
+ do {
+ ret = nouveau_gpuobj_gr_new(chan, mthd->oclass, mthd->oclass);
+ if (ret == 0) {
+ ret = mthd->init(chan, mthd->oclass);
+ if (ret == 0) {
+ dev_priv->ttm.move = mthd->exec;
+ name = mthd->name;
+ break;
+ }
+ }
+ } while ((++mthd)->exec);
+
+ NV_INFO(chan->dev, "MM: using %s for buffer copies\n", name);
+}
+
static int
nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
bool no_wait_reserve, bool no_wait_gpu,
@@ -920,8 +999,8 @@
goto out;
}
- /* Software copy if the card isn't up and running yet. */
- if (!dev_priv->channel) {
+ /* CPU copy if we have no accelerated method available */
+ if (!dev_priv->ttm.move) {
ret = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
goto out;
}