1 /* 2 * Copyright 2025 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 #include <drm/drm_drv.h> 24 #include <linux/vmalloc.h> 25 #include "amdgpu.h" 26 #include "amdgpu_psp.h" 27 #include "amdgpu_ucode.h" 28 #include "soc15_common.h" 29 #include "psp_v15_0.h" 30 31 #include "mp/mp_15_0_0_offset.h" 32 #include "mp/mp_15_0_0_sh_mask.h" 33 34 MODULE_FIRMWARE("amdgpu/psp_15_0_0_toc.bin"); 35 36 static int psp_v15_0_0_init_microcode(struct psp_context *psp) 37 { 38 struct amdgpu_device *adev = psp->adev; 39 char ucode_prefix[30]; 40 int err = 0; 41 42 amdgpu_ucode_ip_version_decode(adev, MP0_HWIP, ucode_prefix, sizeof(ucode_prefix)); 43 44 err = psp_init_toc_microcode(psp, ucode_prefix); 45 if (err) 46 return err; 47 48 return 0; 49 } 50 51 static int psp_v15_0_0_ring_stop(struct psp_context *psp, 52 enum psp_ring_type ring_type) 53 { 54 int ret = 0; 55 struct amdgpu_device *adev = psp->adev; 56 57 if (amdgpu_sriov_vf(adev)) { 58 /* Write the ring destroy command*/ 59 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_101, 60 GFX_CTRL_CMD_ID_DESTROY_GPCOM_RING); 61 /* there might be handshake issue with hardware which needs delay */ 62 mdelay(20); 63 /* Wait for response flag (bit 31) */ 64 ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMPASP_SMN_C2PMSG_101), 65 0x80000000, 0x80000000, false); 66 } else { 67 /* Write the ring destroy command*/ 68 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_64, 69 GFX_CTRL_CMD_ID_DESTROY_RINGS); 70 /* there might be handshake issue with hardware which needs delay */ 71 mdelay(20); 72 /* Wait for response flag (bit 31) */ 73 ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMPASP_SMN_C2PMSG_64), 74 0x80000000, 0x80000000, false); 75 } 76 77 return ret; 78 } 79 80 static int psp_v15_0_0_ring_create(struct psp_context *psp, 81 enum psp_ring_type ring_type) 82 { 83 int ret = 0; 84 unsigned int psp_ring_reg = 0; 85 struct psp_ring *ring = &psp->km_ring; 86 struct amdgpu_device *adev = psp->adev; 87 88 if (amdgpu_sriov_vf(adev)) { 89 ret = psp_v15_0_0_ring_stop(psp, ring_type); 90 if (ret) { 91 DRM_ERROR("psp_v14_0_ring_stop_sriov failed!\n"); 92 return ret; 93 } 94 95 /* Write low address of the ring to C2PMSG_102 */ 96 psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr); 97 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_102, psp_ring_reg); 98 /* Write high address of the ring to C2PMSG_103 */ 99 psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr); 100 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_103, psp_ring_reg); 101 102 /* Write the ring initialization command to C2PMSG_101 */ 103 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_101, 104 GFX_CTRL_CMD_ID_INIT_GPCOM_RING); 105 106 /* there might be handshake issue with hardware which needs delay */ 107 mdelay(20); 108 109 /* Wait for response flag (bit 31) in C2PMSG_101 */ 110 ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMPASP_SMN_C2PMSG_101), 111 0x80000000, 0x8000FFFF, false); 112 113 } else { 114 /* Wait for sOS ready for ring creation */ 115 ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMPASP_SMN_C2PMSG_64), 116 0x80000000, 0x80000000, false); 117 if (ret) { 118 DRM_ERROR("Failed to wait for trust OS ready for ring creation\n"); 119 return ret; 120 } 121 122 /* Write low address of the ring to C2PMSG_69 */ 123 psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr); 124 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_69, psp_ring_reg); 125 /* Write high address of the ring to C2PMSG_70 */ 126 psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr); 127 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_70, psp_ring_reg); 128 /* Write size of ring to C2PMSG_71 */ 129 psp_ring_reg = ring->ring_size; 130 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_71, psp_ring_reg); 131 /* Write the ring initialization command to C2PMSG_64 */ 132 psp_ring_reg = ring_type; 133 psp_ring_reg = psp_ring_reg << 16; 134 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_64, psp_ring_reg); 135 136 /* there might be handshake issue with hardware which needs delay */ 137 mdelay(20); 138 139 /* Wait for response flag (bit 31) in C2PMSG_64 */ 140 ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, regMPASP_SMN_C2PMSG_64), 141 0x80000000, 0x8000FFFF, false); 142 } 143 144 return ret; 145 } 146 147 static int psp_v15_0_0_ring_destroy(struct psp_context *psp, 148 enum psp_ring_type ring_type) 149 { 150 int ret = 0; 151 struct psp_ring *ring = &psp->km_ring; 152 struct amdgpu_device *adev = psp->adev; 153 154 ret = psp_v15_0_0_ring_stop(psp, ring_type); 155 if (ret) 156 DRM_ERROR("Fail to stop psp ring\n"); 157 158 amdgpu_bo_free_kernel(&adev->firmware.rbuf, 159 &ring->ring_mem_mc_addr, 160 (void **)&ring->ring_mem); 161 162 return ret; 163 } 164 165 static uint32_t psp_v15_0_0_ring_get_wptr(struct psp_context *psp) 166 { 167 uint32_t data; 168 struct amdgpu_device *adev = psp->adev; 169 170 if (amdgpu_sriov_vf(adev)) 171 data = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_102); 172 else 173 data = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_67); 174 175 return data; 176 } 177 178 static void psp_v15_0_0_ring_set_wptr(struct psp_context *psp, uint32_t value) 179 { 180 struct amdgpu_device *adev = psp->adev; 181 182 if (amdgpu_sriov_vf(adev)) { 183 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_102, value); 184 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_101, 185 GFX_CTRL_CMD_ID_CONSUME_CMD); 186 } else 187 WREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_67, value); 188 } 189 190 static const struct psp_funcs psp_v15_0_0_funcs = { 191 .init_microcode = psp_v15_0_0_init_microcode, 192 .ring_create = psp_v15_0_0_ring_create, 193 .ring_stop = psp_v15_0_0_ring_stop, 194 .ring_destroy = psp_v15_0_0_ring_destroy, 195 .ring_get_wptr = psp_v15_0_0_ring_get_wptr, 196 .ring_set_wptr = psp_v15_0_0_ring_set_wptr, 197 }; 198 199 void psp_v15_0_0_set_psp_funcs(struct psp_context *psp) 200 { 201 psp->funcs = &psp_v15_0_0_funcs; 202 } 203