drm/amdgpu: add ring_create function for psp v10

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 43327b8..5100302 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -66,6 +66,7 @@ static int psp_sw_init(void *handle)
                psp->init_microcode = psp_v10_0_init_microcode;
                psp->prep_cmd_buf = psp_v10_0_prep_cmd_buf;
                psp->ring_init = psp_v10_0_ring_init;
+               psp->ring_create = psp_v10_0_ring_create;
                psp->cmd_submit = psp_v10_0_cmd_submit;
                psp->compare_sram_data = psp_v10_0_compare_sram_data;
                break;

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
index 133b030..01fce6b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
@@ -178,6 +178,37 @@ int psp_v10_0_ring_init(struct psp_context *psp, enum psp_ring_type ring_type)
        return 0;
 }
 
+int psp_v10_0_ring_create(struct psp_context *psp, enum psp_ring_type ring_type)
+{
+       int ret = 0;
+       unsigned int psp_ring_reg = 0;
+       struct psp_ring *ring = &psp->km_ring;
+       struct amdgpu_device *adev = psp->adev;
+
+       /* Write low address of the ring to C2PMSG_69 */
+       psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
+       WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
+       /* Write high address of the ring to C2PMSG_70 */
+       psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
+       WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
+       /* Write size of ring to C2PMSG_71 */
+       psp_ring_reg = ring->ring_size;
+       WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
+       /* Write the ring initialization command to C2PMSG_64 */
+       psp_ring_reg = ring_type;
+       psp_ring_reg = psp_ring_reg << 16;
+       WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
+
+       /* There might be handshake issue with hardware which needs delay */
+       mdelay(20);
+
+       /* Wait for response flag (bit 31) in C2PMSG_64 */
+       ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
+                          0x80000000, 0x8000FFFF, false);
+
+       return ret;
+}
+
 int psp_v10_0_cmd_submit(struct psp_context *psp,
                        struct amdgpu_firmware_info *ucode,
                        uint64_t cmd_buf_mc_addr, uint64_t fence_mc_addr,

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.h b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.h
index 2f5a314..7e9a8cd 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.h
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.h
@@ -32,6 +32,8 @@ extern int psp_v10_0_prep_cmd_buf(struct amdgpu_firmware_info *ucode,
                                 struct psp_gfx_cmd_resp *cmd);
 extern int psp_v10_0_ring_init(struct psp_context *psp,
                              enum psp_ring_type ring_type);
+extern int psp_v10_0_ring_create(struct psp_context *psp,
+                                enum psp_ring_type ring_type);
 extern int psp_v10_0_cmd_submit(struct psp_context *psp,
                               struct amdgpu_firmware_info *ucode,
                               uint64_t cmd_buf_mc_addr, uint64_t fence_mc_addr,