drm/amdgpu: implement smuio v13_0 callbacks

Aldebaran will use smuio v13_0 callbacks

Signed-off-by: Hawking Zhang <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/Makefile

···
 amdgpu-y += \
 	smuio_v9_0.o \
 	smuio_v11_0.o \
-	smuio_v11_0_6.o
+	smuio_v11_0_6.o \
+	smuio_v13_0.o
 
 # add amdkfd interfaces
 amdgpu-y += amdgpu_amdkfd.o

drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c

···
+/*
+ * 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);
+}
+
+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);
+}
+
+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,
+};

drivers/gpu/drm/amd/amdgpu/smuio_v13_0.h

···
+/*
+ * 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.
+ *
+ */
+#ifndef __SMUIO_V13_0_H__
+#define __SMUIO_V13_0_H__
+
+#include "soc15_common.h"
+
+extern const struct amdgpu_smuio_funcs smuio_v13_0_funcs;
+
+#endif /* __SMUIO_V13_0_H__ */