--- /dev/null
+/*
+ * Copyright 2021 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu.h"
+#include "amdgpu_psp.h"
+#include "amdgpu_ucode.h"
+#include "soc15_common.h"
+#include "psp_v11_0_8.h"
+
+#include "mp/mp_11_0_8_offset.h"
+
+static int psp_v11_0_8_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_v11_0_8_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, mmMP0_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, mmMP0_SMN_C2PMSG_101),
+ 0x80000000, 0x80000000, false);
+ } else {
+ /* Write the ring destroy command*/
+ WREG32_SOC15(MP0, 0, mmMP0_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, mmMP0_SMN_C2PMSG_64),
+ 0x80000000, 0x80000000, false);
+ }
+
+ return ret;
+}
+
+static int psp_v11_0_8_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_v11_0_8_ring_stop(psp, ring_type);
+ if (ret) {
+ DRM_ERROR("psp_v11_0_8_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, mmMP0_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, mmMP0_SMN_C2PMSG_103, psp_ring_reg);
+
+ /* Write the ring initialization command to C2PMSG_101 */
+ WREG32_SOC15(MP0, 0, mmMP0_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, mmMP0_SMN_C2PMSG_101),
+ 0x80000000, 0x8000FFFF, false);
+
+ } else {
+ /* Wait for sOS ready for ring creation */
+ ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_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, 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;
+}
+
+static int psp_v11_0_8_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_v11_0_8_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_v11_0_8_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, mmMP0_SMN_C2PMSG_102);
+ else
+ data = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67);
+
+ return data;
+}
+
+static void psp_v11_0_8_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, mmMP0_SMN_C2PMSG_102, value);
+ WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_101,
+ GFX_CTRL_CMD_ID_CONSUME_CMD);
+ } else
+ WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67, value);
+}
+
+static const struct psp_funcs psp_v11_0_8_funcs = {
+ .ring_init = psp_v11_0_8_ring_init,
+ .ring_create = psp_v11_0_8_ring_create,
+ .ring_stop = psp_v11_0_8_ring_stop,
+ .ring_destroy = psp_v11_0_8_ring_destroy,
+ .ring_get_wptr = psp_v11_0_8_ring_get_wptr,
+ .ring_set_wptr = psp_v11_0_8_ring_set_wptr,
+};
+
+void psp_v11_0_8_set_psp_funcs(struct psp_context *psp)
+{
+ psp->funcs = &psp_v11_0_8_funcs;
+}
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