2 * Copyright 2020 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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24 #include "smuio_v13_0.h"
25 #include "smuio/smuio_13_0_2_offset.h"
26 #include "smuio/smuio_13_0_2_sh_mask.h"
28 #define SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK 0x00000001L
30 static u32 smuio_v13_0_get_rom_index_offset(struct amdgpu_device *adev)
32 return SOC15_REG_OFFSET(SMUIO, 0, regROM_INDEX);
35 static u32 smuio_v13_0_get_rom_data_offset(struct amdgpu_device *adev)
37 return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA);
40 static void smuio_v13_0_update_rom_clock_gating(struct amdgpu_device *adev, bool enable)
44 /* enable/disable ROM CG is not supported on APU */
45 if (adev->flags & AMD_IS_APU)
48 def = data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0);
50 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ROM_MGCG))
51 data &= ~(CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
52 CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK);
54 data |= CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
55 CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK;
58 WREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0, data);
61 static void smuio_v13_0_get_clock_gating_state(struct amdgpu_device *adev, u32 *flags)
65 /* CGTT_ROM_CLK_CTRL0 is not available for APU */
66 if (adev->flags & AMD_IS_APU)
69 data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0);
70 if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
71 *flags |= AMD_CG_SUPPORT_ROM_MGCG;
75 * smuio_v13_0_get_die_id - query die id from FCH.
77 * @adev: amdgpu device pointer
81 static u32 smuio_v13_0_get_die_id(struct amdgpu_device *adev)
85 data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
86 die_id = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, DIE_ID);
92 * smuio_v13_0_supports_host_gpu_xgmi - detect xgmi interface between cpu and gpu/s.
94 * @adev: amdgpu device pointer
96 * Returns true on success or false otherwise.
98 static bool smuio_v13_0_is_host_gpu_xgmi_supported(struct amdgpu_device *adev)
102 data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
103 data = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, TOPOLOGY_ID);
105 * bit 0 == 0 host-gpu interface is PCIE
106 * bit 0 == 1 host-gpu interface is Alternate Protocal
107 * for AMD, this is XGMI
109 data &= SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK;
111 return data ? true : false;
114 const struct amdgpu_smuio_funcs smuio_v13_0_funcs = {
115 .get_rom_index_offset = smuio_v13_0_get_rom_index_offset,
116 .get_rom_data_offset = smuio_v13_0_get_rom_data_offset,
117 .get_die_id = smuio_v13_0_get_die_id,
118 .is_host_gpu_xgmi_supported = smuio_v13_0_is_host_gpu_xgmi_supported,
119 .update_rom_clock_gating = smuio_v13_0_update_rom_clock_gating,
120 .get_clock_gating_state = smuio_v13_0_get_clock_gating_state,