[PATCH 1/2] drm/amdgpu: add vcn_doorbell_range callback for nbio 7.11

[Alex Deucher]

Implement support for setting up the VCN doorbell range for
NBIO 7.11.

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c 
b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
index a32d9b8ec51b..bcf5fb420fda 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
@@ -100,6 +100,27 @@ static void nbio_v7_11_vpe_doorbell_range(struct 
amdgpu_device *adev, int instan
        WREG32_PCIE_PORT(reg, doorbell_range);
 }
 
+static void nbio_v7_11_vcn_doorbell_range(struct amdgpu_device *adev,
+                                         bool use_doorbell,
+                                         int doorbell_index, int instance)
+{
+       u32 reg = SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_VCN0_DOORBELL_RANGE);
+       u32 doorbell_range = RREG32_PCIE_PORT(reg);
+
+       if (use_doorbell) {
+               doorbell_range = REG_SET_FIELD(doorbell_range,
+                                              GDC0_BIF_VCN0_DOORBELL_RANGE, 
OFFSET,
+                                              doorbell_index);
+               doorbell_range = REG_SET_FIELD(doorbell_range,
+                                              GDC0_BIF_VCN0_DOORBELL_RANGE, 
SIZE, 8);
+       } else {
+               doorbell_range = REG_SET_FIELD(doorbell_range,
+                                              GDC0_BIF_VCN0_DOORBELL_RANGE, 
SIZE, 0);
+       }
+
+       WREG32_PCIE_PORT(reg, doorbell_range);
+}
+
 static void nbio_v7_11_enable_doorbell_aperture(struct amdgpu_device *adev,
                                               bool enable)
 {
@@ -256,6 +277,7 @@ const struct amdgpu_nbio_funcs nbio_v7_11_funcs = {
        .mc_access_enable = nbio_v7_11_mc_access_enable,
        .get_memsize = nbio_v7_11_get_memsize,
        .sdma_doorbell_range = nbio_v7_11_sdma_doorbell_range,
+       .vcn_doorbell_range = nbio_v7_11_vcn_doorbell_range,
        .vpe_doorbell_range = nbio_v7_11_vpe_doorbell_range,
        .enable_doorbell_aperture = nbio_v7_11_enable_doorbell_aperture,
        .enable_doorbell_selfring_aperture = 
nbio_v7_11_enable_doorbell_selfring_aperture,
-- 
2.41.0