drivers/gpu/drm/amd/amdgpu/psp_v10_0.c

   1 /*
   2  * Copyright 2016 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  * Author: Huang Rui
  23  *
  24  */
  25
  26 #include <linux/firmware.h>
  27 #include <linux/module.h>
  28 #include <linux/pci.h>
  29
  30 #include "amdgpu.h"
  31 #include "amdgpu_psp.h"
  32 #include "amdgpu_ucode.h"
  33 #include "soc15_common.h"
  34 #include "psp_v10_0.h"
  35
  36 #include "mp/mp_10_0_offset.h"
  37 #include "gc/gc_9_1_offset.h"
  38 #include "sdma0/sdma0_4_1_offset.h"
  39
  40 MODULE_FIRMWARE("amdgpu/raven_asd.bin");
  41 MODULE_FIRMWARE("amdgpu/picasso_asd.bin");
  42 MODULE_FIRMWARE("amdgpu/raven2_asd.bin");
  43 MODULE_FIRMWARE("amdgpu/picasso_ta.bin");
  44 MODULE_FIRMWARE("amdgpu/raven2_ta.bin");
  45 MODULE_FIRMWARE("amdgpu/raven_ta.bin");
  46
  47 static int psp_v10_0_init_microcode(struct psp_context *psp)
  48 {
  49         struct amdgpu_device *adev = psp->adev;
  50         const char *chip_name;
  51         char fw_name[30];
  52         int err = 0;
  53         const struct ta_firmware_header_v1_0 *ta_hdr;
  54         DRM_DEBUG("\n");
  55
  56         switch (adev->asic_type) {
  57         case CHIP_RAVEN:
  58                 if (adev->apu_flags & AMD_APU_IS_RAVEN2)
  59                         chip_name = "raven2";
  60                 else if (adev->apu_flags & AMD_APU_IS_PICASSO)
  61                         chip_name = "picasso";
  62                 else
  63                         chip_name = "raven";
  64                 break;
  65         default: BUG();
  66         }
  67
  68         err = psp_init_asd_microcode(psp, chip_name);
  69         if (err)
  70                 goto out;
  71
  72         snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name);
  73         err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev);
  74         if (err) {
  75                 release_firmware(adev->psp.ta_fw);
  76                 adev->psp.ta_fw = NULL;
  77                 dev_info(adev->dev,
  78                          "psp v10.0: Failed to load firmware \"%s\"\n",
  79                          fw_name);
  80         } else {
  81                 err = amdgpu_ucode_validate(adev->psp.ta_fw);
  82                 if (err)
  83                         goto out2;
  84
  85                 ta_hdr = (const struct ta_firmware_header_v1_0 *)
  86                                  adev->psp.ta_fw->data;
  87                 adev->psp.hdcp.feature_version =
  88                         le32_to_cpu(ta_hdr->hdcp.fw_version);
  89                 adev->psp.hdcp.size_bytes =
  90                         le32_to_cpu(ta_hdr->hdcp.size_bytes);
  91                 adev->psp.hdcp.start_addr =
  92                         (uint8_t *)ta_hdr +
  93                         le32_to_cpu(ta_hdr->header.ucode_array_offset_bytes);
  94
  95                 adev->psp.dtm.feature_version =
  96                         le32_to_cpu(ta_hdr->dtm.fw_version);
  97                 adev->psp.dtm.size_bytes =
  98                         le32_to_cpu(ta_hdr->dtm.size_bytes);
  99                 adev->psp.dtm.start_addr =
 100                         (uint8_t *)adev->psp.hdcp.start_addr +
 101                         le32_to_cpu(ta_hdr->dtm.offset_bytes);
 102
 103                 adev->psp.securedisplay.feature_version =
 104                         le32_to_cpu(ta_hdr->securedisplay.fw_version);
 105                 adev->psp.securedisplay.size_bytes =
 106                         le32_to_cpu(ta_hdr->securedisplay.size_bytes);
 107                 adev->psp.securedisplay.start_addr =
 108                         (uint8_t *)adev->psp.hdcp.start_addr +
 109                         le32_to_cpu(ta_hdr->securedisplay.offset_bytes);
 110
 111                 adev->psp.ta_fw_version = le32_to_cpu(ta_hdr->header.ucode_version);
 112         }
 113
 114         return 0;
 115
 116 out2:
 117         release_firmware(adev->psp.ta_fw);
 118         adev->psp.ta_fw = NULL;
 119 out:
 120         if (err) {
 121                 dev_err(adev->dev,
 122                         "psp v10.0: Failed to load firmware \"%s\"\n",
 123                         fw_name);
 124         }
 125
 126         return err;
 127 }
 128
 129 static int psp_v10_0_ring_init(struct psp_context *psp,
 130                                enum psp_ring_type ring_type)
 131 {
 132         int ret = 0;
 133         struct psp_ring *ring;
 134         struct amdgpu_device *adev = psp->adev;
 135
 136         ring = &psp->km_ring;
 137
 138         ring->ring_type = ring_type;
 139
 140         /* allocate 4k Page of Local Frame Buffer memory for ring */
 141         ring->ring_size = 0x1000;
 142         ret = amdgpu_bo_create_kernel(adev, ring->ring_size, PAGE_SIZE,
 143                                       AMDGPU_GEM_DOMAIN_VRAM,
 144                                       &adev->firmware.rbuf,
 145                                       &ring->ring_mem_mc_addr,
 146                                       (void **)&ring->ring_mem);
 147         if (ret) {
 148                 ring->ring_size = 0;
 149                 return ret;
 150         }
 151
 152         return 0;
 153 }
 154
 155 static int psp_v10_0_ring_create(struct psp_context *psp,
 156                                  enum psp_ring_type ring_type)
 157 {
 158         int ret = 0;
 159         unsigned int psp_ring_reg = 0;
 160         struct psp_ring *ring = &psp->km_ring;
 161         struct amdgpu_device *adev = psp->adev;
 162
 163         /* Write low address of the ring to C2PMSG_69 */
 164         psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
 165         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
 166         /* Write high address of the ring to C2PMSG_70 */
 167         psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
 168         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
 169         /* Write size of ring to C2PMSG_71 */
 170         psp_ring_reg = ring->ring_size;
 171         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
 172         /* Write the ring initialization command to C2PMSG_64 */
 173         psp_ring_reg = ring_type;
 174         psp_ring_reg = psp_ring_reg << 16;
 175         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
 176
 177         /* There might be handshake issue with hardware which needs delay */
 178         mdelay(20);
 179
 180         /* Wait for response flag (bit 31) in C2PMSG_64 */
 181         ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
 182                            0x80000000, 0x8000FFFF, false);
 183
 184         return ret;
 185 }
 186
 187 static int psp_v10_0_ring_stop(struct psp_context *psp,
 188                                enum psp_ring_type ring_type)
 189 {
 190         int ret = 0;
 191         unsigned int psp_ring_reg = 0;
 192         struct amdgpu_device *adev = psp->adev;
 193
 194         /* Write the ring destroy command to C2PMSG_64 */
 195         psp_ring_reg = 3 << 16;
 196         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
 197
 198         /* There might be handshake issue with hardware which needs delay */
 199         mdelay(20);
 200
 201         /* Wait for response flag (bit 31) in C2PMSG_64 */
 202         ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
 203                            0x80000000, 0x80000000, false);
 204
 205         return ret;
 206 }
 207
 208 static int psp_v10_0_ring_destroy(struct psp_context *psp,
 209                                   enum psp_ring_type ring_type)
 210 {
 211         int ret = 0;
 212         struct psp_ring *ring = &psp->km_ring;
 213         struct amdgpu_device *adev = psp->adev;
 214
 215         ret = psp_v10_0_ring_stop(psp, ring_type);
 216         if (ret)
 217                 DRM_ERROR("Fail to stop psp ring\n");
 218
 219         amdgpu_bo_free_kernel(&adev->firmware.rbuf,
 220                               &ring->ring_mem_mc_addr,
 221                               (void **)&ring->ring_mem);
 222
 223         return ret;
 224 }
 225
 226 static int psp_v10_0_mode1_reset(struct psp_context *psp)
 227 {
 228         DRM_INFO("psp mode 1 reset not supported now! \n");
 229         return -EINVAL;
 230 }
 231
 232 static uint32_t psp_v10_0_ring_get_wptr(struct psp_context *psp)
 233 {
 234         struct amdgpu_device *adev = psp->adev;
 235
 236         return RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67);
 237 }
 238
 239 static void psp_v10_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
 240 {
 241         struct amdgpu_device *adev = psp->adev;
 242
 243         WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67, value);
 244 }
 245
 246 static const struct psp_funcs psp_v10_0_funcs = {
 247         .init_microcode = psp_v10_0_init_microcode,
 248         .ring_init = psp_v10_0_ring_init,
 249         .ring_create = psp_v10_0_ring_create,
 250         .ring_stop = psp_v10_0_ring_stop,
 251         .ring_destroy = psp_v10_0_ring_destroy,
 252         .mode1_reset = psp_v10_0_mode1_reset,
 253         .ring_get_wptr = psp_v10_0_ring_get_wptr,
 254         .ring_set_wptr = psp_v10_0_ring_set_wptr,
 255 };
 256
 257 void psp_v10_0_set_psp_funcs(struct psp_context *psp)
 258 {
 259         psp->funcs = &psp_v10_0_funcs;
 260 }