diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c b/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c new file mode 100644 index 000000000000..079b094c48ad --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c @@ -0,0 +1,121 @@ +/* + * Copyright 2020 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 "smuio_v13_0.h" +#include "smuio/smuio_13_0_2_offset.h" +#include "smuio/smuio_13_0_2_sh_mask.h" + +#define SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK 0x00000001L + +static u32 smuio_v13_0_get_rom_index_offset(struct amdgpu_device *adev) +{ + return SOC15_REG_OFFSET(SMUIO, 0, regROM_INDEX); +} + +static u32 smuio_v13_0_get_rom_data_offset(struct amdgpu_device *adev) +{ + return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA); +} + +static void smuio_v13_0_update_rom_clock_gating(struct amdgpu_device *adev, bool enable) +{ + u32 def, data; + + /* enable/disable ROM CG is not supported on APU */ + if (adev->flags & AMD_IS_APU) + return; + + def = data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0); + + if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ROM_MGCG)) + data &= ~(CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK | + CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK); + else + data |= CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK | + CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK; + + if (def != data) + WREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0, data); +} + +static void smuio_v13_0_get_clock_gating_state(struct amdgpu_device *adev, u32 *flags) +{ + u32 data; + + /* CGTT_ROM_CLK_CTRL0 is not available for APU */ + if (adev->flags & AMD_IS_APU) + return; + + data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0); + if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK)) + *flags |= AMD_CG_SUPPORT_ROM_MGCG; +} + +/** + * smuio_v13_0_get_die_id - query die id from FCH. + * + * @adev: amdgpu device pointer + * + * Returns die id + */ +static u32 smuio_v13_0_get_die_id(struct amdgpu_device *adev) +{ + u32 data, die_id; + + data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG); + die_id = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, DIE_ID); + + return die_id; +} + +/** + * smuio_v13_0_supports_host_gpu_xgmi - detect xgmi interface between cpu and gpu/s. + * + * @adev: amdgpu device pointer + * + * Returns true on success or false otherwise. + */ +static bool smuio_v13_0_is_host_gpu_xgmi_supported(struct amdgpu_device *adev) +{ + u32 data; + + data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG); + data = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, TOPOLOGY_ID); + /* data[4:0] + * bit 0 == 0 host-gpu interface is PCIE + * bit 0 == 1 host-gpu interface is Alternate Protocal + * for AMD, this is XGMI + */ + data &= SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK; + + return data ? true : false; +} + +const struct amdgpu_smuio_funcs smuio_v13_0_funcs = { + .get_rom_index_offset = smuio_v13_0_get_rom_index_offset, + .get_rom_data_offset = smuio_v13_0_get_rom_data_offset, + .get_die_id = smuio_v13_0_get_die_id, + .is_host_gpu_xgmi_supported = smuio_v13_0_is_host_gpu_xgmi_supported, + .update_rom_clock_gating = smuio_v13_0_update_rom_clock_gating, + .get_clock_gating_state = smuio_v13_0_get_clock_gating_state, +}; |