[PATCH] drm/amdgpu: enable paging queue doorbell support

[Yang, Philip]

paging queues doorbell index use existing assignment sDMA_HI_PRI_ENGINE0/1
index, and increase SDMA_DOORBELL_RANGE size from 2 dwords to 4 dwords to
enable the new doorbell index.

Change-Id: I9adb965f16ee4089d261d9a22231337739184e49
Signed-off-by: Philip Yang <Philip.Yang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c |  2 +-
 drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c |  2 +-
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 25 +++++++++++++++++--------
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
index 6f9c54978cc1..0eb42c29ecac 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
@@ -80,7 +80,7 @@ static void nbio_v6_1_sdma_doorbell_range(struct amdgpu_device *adev, int instan
 
 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
-		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 2);
+		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 4);
 	} else
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index f8cee95d61cc..9342ee03d7d4 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -76,7 +76,7 @@ static void nbio_v7_4_sdma_doorbell_range(struct amdgpu_device *adev, int instan
 
 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
-		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 2);
+		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 4);
 	} else
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index f4490cdd9804..96c9e83204b7 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -925,11 +925,9 @@ static void sdma_v4_0_page_resume(struct amdgpu_device *adev, unsigned int i)
 					OFFSET, ring->doorbell_index);
 	WREG32_SDMA(i, mmSDMA0_PAGE_DOORBELL, doorbell);
 	WREG32_SDMA(i, mmSDMA0_PAGE_DOORBELL_OFFSET, doorbell_offset);
-	/* TODO: enable doorbell support */
-	/*adev->nbio_funcs->sdma_doorbell_range(adev, i, ring->use_doorbell,
-					      ring->doorbell_index);*/
 
-	sdma_v4_0_ring_set_wptr(ring);
+	/* paging queue doorbell index is already enabled at sdma_v4_0_gfx_resume */
+	sdma_v4_0_page_ring_set_wptr(ring);
 
 	/* set minor_ptr_update to 0 after wptr programed */
 	WREG32_SDMA(i, mmSDMA0_PAGE_MINOR_PTR_UPDATE, 0);
@@ -1504,9 +1502,6 @@ static int sdma_v4_0_sw_init(void *handle)
 		ring->ring_obj = NULL;
 		ring->use_doorbell = true;
 
-		DRM_INFO("use_doorbell being set to: [%s]\n",
-				ring->use_doorbell?"true":"false");
-
 		if (adev->asic_type == CHIP_VEGA10)
 			ring->doorbell_index = (i == 0) ?
 				(AMDGPU_VEGA10_DOORBELL64_sDMA_ENGINE0 << 1) //get DWORD offset
@@ -1516,6 +1511,8 @@ static int sdma_v4_0_sw_init(void *handle)
 				(AMDGPU_DOORBELL64_sDMA_ENGINE0 << 1) //get DWORD offset
 				: (AMDGPU_DOORBELL64_sDMA_ENGINE1 << 1); // get DWORD offset
 
+		DRM_INFO("use_doorbell being set to: [%s] doorbell index %d\n",
+			ring->use_doorbell?"true":"false", ring->doorbell_index);
 
 		sprintf(ring->name, "sdma%d", i);
 		r = amdgpu_ring_init(adev, ring, 1024,
@@ -1529,7 +1526,19 @@ static int sdma_v4_0_sw_init(void *handle)
 		if (adev->sdma.has_page_queue) {
 			ring = &adev->sdma.instance[i].page;
 			ring->ring_obj = NULL;
-			ring->use_doorbell = false;
+			ring->use_doorbell = true;
+
+			if (adev->asic_type == CHIP_VEGA10)
+				ring->doorbell_index = (i == 0) ?
+					(AMDGPU_VEGA10_DOORBELL64_sDMA_HI_PRI_ENGINE0 << 1)
+					: (AMDGPU_VEGA10_DOORBELL64_sDMA_HI_PRI_ENGINE1 << 1);
+			else
+				ring->doorbell_index = (i == 0) ?
+					(AMDGPU_VEGA10_DOORBELL64_sDMA_HI_PRI_ENGINE0 << 1)
+					: (AMDGPU_VEGA10_DOORBELL64_sDMA_HI_PRI_ENGINE1 << 1);
+
+			DRM_INFO("paging queue doorbell being set to: [%s] doorbell index %d\n",
+				ring->use_doorbell?"true":"false", ring->doorbell_index);
 
 			sprintf(ring->name, "page%d", i);
 			r = amdgpu_ring_init(adev, ring, 1024,
-- 
2.17.1