1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
new file mode 100644
index 000000000..c7a5e5c7c
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 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) 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 _AMDGPU_RAS_EEPROM_H
+#define _AMDGPU_RAS_EEPROM_H
+
+#include <linux/i2c.h>
+
+struct amdgpu_device;
+
+enum amdgpu_ras_eeprom_err_type{
+	AMDGPU_RAS_EEPROM_ERR_PLACE_HOLDER,
+	AMDGPU_RAS_EEPROM_ERR_RECOVERABLE,
+	AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE
+};
+
+struct amdgpu_ras_eeprom_table_header {
+	uint32_t header;
+	uint32_t version;
+	uint32_t first_rec_offset;
+	uint32_t tbl_size;
+	uint32_t checksum;
+}__attribute__((__packed__));
+
+struct amdgpu_ras_eeprom_control {
+	struct amdgpu_ras_eeprom_table_header tbl_hdr;
+	uint32_t next_addr;
+	unsigned int num_recs;
+	struct mutex tbl_mutex;
+	uint32_t tbl_byte_sum;
+	uint16_t i2c_address; // 8-bit represented address
+};
+
+/*
+ * Represents single table record. Packed to be easily serialized into byte
+ * stream.
+ */
+struct eeprom_table_record {
+
+	union {
+		uint64_t address;
+		uint64_t offset;
+	};
+
+	uint64_t retired_page;
+	uint64_t ts;
+
+	enum amdgpu_ras_eeprom_err_type err_type;
+
+	union {
+		unsigned char bank;
+		unsigned char cu;
+	};
+
+	unsigned char mem_channel;
+	unsigned char mcumc_id;
+}__attribute__((__packed__));
+
+int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
+			bool *exceed_err_limit);
+int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control);
+
+int amdgpu_ras_eeprom_check_err_threshold(
+				struct amdgpu_ras_eeprom_control *control,
+				bool *exceed_err_limit);
+
+int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control,
+					    struct eeprom_table_record *records,
+					    bool write,
+					    int num);
+
+inline uint32_t amdgpu_ras_eeprom_get_record_max_length(void);
+
+void amdgpu_ras_eeprom_test(struct amdgpu_ras_eeprom_control *control);
+
+#endif // _AMDGPU_RAS_EEPROM_H