Merge branch 'next' into for-linus

Prepare input updates for 5.5 merge window.

1 files changed, 82 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h
new file mode 100644
index 000000000000..975afa04df09
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2019  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) 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 __AMDGPU_UMC_H__
+#define __AMDGPU_UMC_H__
+
+/* implement 64 bits REG operations via 32 bits interface */
+#define RREG64_UMC(reg)	(RREG32(reg) | \
+				((uint64_t)RREG32((reg) + 1) << 32))
+#define WREG64_UMC(reg, v)	\
+	do {	\
+		WREG32((reg), lower_32_bits(v));	\
+		WREG32((reg) + 1, upper_32_bits(v));	\
+	} while (0)
+
+/*
+ * void (*func)(struct amdgpu_device *adev, struct ras_err_data *err_data,
+ *				uint32_t umc_reg_offset, uint32_t channel_index)
+ */
+#define amdgpu_umc_for_each_channel(func)	\
+	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;	\
+	uint32_t umc_inst, channel_inst, umc_reg_offset, channel_index;	\
+	for (umc_inst = 0; umc_inst < adev->umc.umc_inst_num; umc_inst++) {	\
+		/* enable the index mode to query eror count per channel */	\
+		adev->umc.funcs->enable_umc_index_mode(adev, umc_inst);	\
+		for (channel_inst = 0;	\
+			channel_inst < adev->umc.channel_inst_num;	\
+			channel_inst++) {	\
+			/* calc the register offset according to channel instance */	\
+			umc_reg_offset = adev->umc.channel_offs * channel_inst;	\
+			/* get channel index of interleaved memory */	\
+			channel_index = adev->umc.channel_idx_tbl[	\
+				umc_inst * adev->umc.channel_inst_num + channel_inst];	\
+			(func)(adev, err_data, umc_reg_offset, channel_index);	\
+		}	\
+	}	\
+	adev->umc.funcs->disable_umc_index_mode(adev);
+
+struct amdgpu_umc_funcs {
+	void (*ras_init)(struct amdgpu_device *adev);
+	void (*query_ras_error_count)(struct amdgpu_device *adev,
+					void *ras_error_status);
+	void (*query_ras_error_address)(struct amdgpu_device *adev,
+					void *ras_error_status);
+	void (*enable_umc_index_mode)(struct amdgpu_device *adev,
+					uint32_t umc_instance);
+	void (*disable_umc_index_mode)(struct amdgpu_device *adev);
+};
+
+struct amdgpu_umc {
+	/* max error count in one ras query call */
+	uint32_t max_ras_err_cnt_per_query;
+	/* number of umc channel instance with memory map register access */
+	uint32_t channel_inst_num;
+	/* number of umc instance with memory map register access */
+	uint32_t umc_inst_num;
+	/* UMC regiser per channel offset */
+	uint32_t channel_offs;
+	/* channel index table of interleaved memory */
+	const uint32_t *channel_idx_tbl;
+
+	const struct amdgpu_umc_funcs *funcs;
+};
+
+#endif