[PATCH 029/159] drm/amdgpu: add psp v13 ring support
Alex Deucher
alexander.deucher at amd.com
Wed Feb 24 22:16:49 UTC 2021
From: Hawking Zhang <Hawking.Zhang at amd.com>
Add callback functions for psp_v13 ring
Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
Reviewed-by: Le Ma <Le.Ma at amd.com>
Reviewed-by: Kevin Wang <kevin1.wang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/psp_v13_0.c | 171 +++++++++++++++++++++++++
1 file changed, 171 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
index 6bdea3f35f3d..4beee092acf1 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
@@ -189,11 +189,182 @@ static int psp_v13_0_bootloader_load_sos(struct psp_context *psp)
return ret;
}
+static int psp_v13_0_ring_init(struct psp_context *psp,
+ enum psp_ring_type ring_type)
+{
+ int ret = 0;
+ struct psp_ring *ring;
+ struct amdgpu_device *adev = psp->adev;
+
+ ring = &psp->km_ring;
+
+ ring->ring_type = ring_type;
+
+ /* allocate 4k Page of Local Frame Buffer memory for ring */
+ ring->ring_size = 0x1000;
+ ret = amdgpu_bo_create_kernel(adev, ring->ring_size, PAGE_SIZE,
+ AMDGPU_GEM_DOMAIN_VRAM,
+ &adev->firmware.rbuf,
+ &ring->ring_mem_mc_addr,
+ (void **)&ring->ring_mem);
+ if (ret) {
+ ring->ring_size = 0;
+ return ret;
+ }
+
+ return 0;
+}
+
+static int psp_v13_0_ring_stop(struct psp_context *psp,
+ enum psp_ring_type ring_type)
+{
+ int ret = 0;
+ struct amdgpu_device *adev = psp->adev;
+
+ if (amdgpu_sriov_vf(adev)) {
+ /* Write the ring destroy command*/
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_101,
+ GFX_CTRL_CMD_ID_DESTROY_GPCOM_RING);
+ /* there might be handshake issue with hardware which needs delay */
+ mdelay(20);
+ /* Wait for response flag (bit 31) */
+ ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_101),
+ 0x80000000, 0x80000000, false);
+ } else {
+ /* Write the ring destroy command*/
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_64,
+ GFX_CTRL_CMD_ID_DESTROY_RINGS);
+ /* there might be handshake issue with hardware which needs delay */
+ mdelay(20);
+ /* Wait for response flag (bit 31) */
+ ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_64),
+ 0x80000000, 0x80000000, false);
+ }
+
+ return ret;
+}
+
+static int psp_v13_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;
+
+ if (amdgpu_sriov_vf(adev)) {
+ ret = psp_v13_0_ring_stop(psp, ring_type);
+ if (ret) {
+ DRM_ERROR("psp_v13_0_ring_stop_sriov failed!\n");
+ return ret;
+ }
+
+ /* Write low address of the ring to C2PMSG_102 */
+ psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_102, psp_ring_reg);
+ /* Write high address of the ring to C2PMSG_103 */
+ psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_103, psp_ring_reg);
+
+ /* Write the ring initialization command to C2PMSG_101 */
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_101,
+ GFX_CTRL_CMD_ID_INIT_GPCOM_RING);
+
+ /* there might be handshake issue with hardware which needs delay */
+ mdelay(20);
+
+ /* Wait for response flag (bit 31) in C2PMSG_101 */
+ ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_101),
+ 0x80000000, 0x8000FFFF, false);
+
+ } else {
+ /* Wait for sOS ready for ring creation */
+ ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMP0_SMN_C2PMSG_64),
+ 0x80000000, 0x80000000, false);
+ if (ret) {
+ DRM_ERROR("Failed to wait for trust OS ready for ring creation\n");
+ return ret;
+ }
+
+ /* Write low address of the ring to C2PMSG_69 */
+ psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
+ WREG32_SOC15(MP0, 0, regMP0_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, regMP0_SMN_C2PMSG_70, psp_ring_reg);
+ /* Write size of ring to C2PMSG_71 */
+ psp_ring_reg = ring->ring_size;
+ WREG32_SOC15(MP0, 0, regMP0_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, regMP0_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, regMP0_SMN_C2PMSG_64),
+ 0x80000000, 0x8000FFFF, false);
+ }
+
+ return ret;
+}
+
+static int psp_v13_0_ring_destroy(struct psp_context *psp,
+ enum psp_ring_type ring_type)
+{
+ int ret = 0;
+ struct psp_ring *ring = &psp->km_ring;
+ struct amdgpu_device *adev = psp->adev;
+
+ ret = psp_v13_0_ring_stop(psp, ring_type);
+ if (ret)
+ DRM_ERROR("Fail to stop psp ring\n");
+
+ amdgpu_bo_free_kernel(&adev->firmware.rbuf,
+ &ring->ring_mem_mc_addr,
+ (void **)&ring->ring_mem);
+
+ return ret;
+}
+
+static uint32_t psp_v13_0_ring_get_wptr(struct psp_context *psp)
+{
+ uint32_t data;
+ struct amdgpu_device *adev = psp->adev;
+
+ if (amdgpu_sriov_vf(adev))
+ data = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_102);
+ else
+ data = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_67);
+
+ return data;
+}
+
+static void psp_v13_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
+{
+ struct amdgpu_device *adev = psp->adev;
+
+ if (amdgpu_sriov_vf(adev)) {
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_102, value);
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_101,
+ GFX_CTRL_CMD_ID_CONSUME_CMD);
+ } else
+ WREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_67, value);
+}
+
static const struct psp_funcs psp_v13_0_funcs = {
.init_microcode = psp_v13_0_init_microcode,
.bootloader_load_kdb = psp_v13_0_bootloader_load_kdb,
.bootloader_load_sysdrv = psp_v13_0_bootloader_load_sysdrv,
.bootloader_load_sos = psp_v13_0_bootloader_load_sos,
+ .ring_init = psp_v13_0_ring_init,
+ .ring_create = psp_v13_0_ring_create,
+ .ring_stop = psp_v13_0_ring_stop,
+ .ring_destroy = psp_v13_0_ring_destroy,
+ .ring_get_wptr = psp_v13_0_ring_get_wptr,
+ .ring_set_wptr = psp_v13_0_ring_set_wptr,
};
void psp_v13_0_set_psp_funcs(struct psp_context *psp)
--
2.29.2
More information about the amd-gfx
mailing list