drm/amdgpu: set RAS EEPROM address from VBIOS

update to latest atombios fw table

Signed-off-by: John Clements <[email protected]>
Reviewed-by: Hawking Zhang <[email protected]>.
Signed-off-by: Alex Deucher <[email protected]>

Author: John Clements

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

@@ -468,6 +468,46 @@ bool amdgpu_atomfirmware_dynamic_boot_config_supported(struct amdgpu_device *ade
 	return (fw_cap & ATOM_FIRMWARE_CAP_DYNAMIC_BOOT_CFG_ENABLE) ? true : false;
 }
 
+/*
+ * Helper function to query RAS EEPROM address
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Return true if vbios supports ras rom address reporting
+ */
+bool amdgpu_atomfirmware_ras_rom_addr(struct amdgpu_device *adev, uint8_t* i2c_address)
+{
+	struct amdgpu_mode_info *mode_info = &adev->mode_info;
+	int index;
+	u16 data_offset, size;
+	union firmware_info *firmware_info;
+	u8 frev, crev;
+
+	if (i2c_address == NULL)
+		return false;
+
+	*i2c_address = 0;
+
+	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
+			firmwareinfo);
+
+	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context,
+				index, &size, &frev, &crev, &data_offset)) {
+		/* support firmware_info 3.4 + */
+		if ((frev == 3 && crev >=4) || (frev > 3)) {
+			firmware_info = (union firmware_info *)
+				(mode_info->atom_context->bios + data_offset);
+			*i2c_address = firmware_info->v34.ras_rom_i2c_slave_addr;
+		}
+	}
+
+	if (*i2c_address != 0)
+		return true;
+
+	return false;
+}
+
+
 union smu_info {
 	struct atom_smu_info_v3_1 v31;
 };

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

@@ -36,6 +36,7 @@ int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev);
 int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev);
 bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev);
 bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev);
+bool amdgpu_atomfirmware_ras_rom_addr(struct amdgpu_device *adev, uint8_t* i2c_address);
 bool amdgpu_atomfirmware_mem_training_supported(struct amdgpu_device *adev);
 bool amdgpu_atomfirmware_dynamic_boot_config_supported(struct amdgpu_device *adev);
 int amdgpu_atomfirmware_get_fw_reserved_fb_size(struct amdgpu_device *adev);

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

@@ -27,6 +27,7 @@
 #include <linux/bits.h>
 #include "atom.h"
 #include "amdgpu_eeprom.h"
+#include "amdgpu_atomfirmware.h"
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 
@@ -116,6 +117,22 @@ static bool __get_eeprom_i2c_addr(struct amdgpu_device *adev,
 	if (!control)
 		return false;
 
+	control->i2c_address = 0;
+
+	if (amdgpu_atomfirmware_ras_rom_addr(adev, (uint8_t*)&control->i2c_address))
+	{
+		if (control->i2c_address == 0xA0)
+			control->i2c_address = 0;
+		else if (control->i2c_address == 0xA8)
+			control->i2c_address = 0x40000;
+		else {
+			dev_warn(adev->dev, "RAS EEPROM I2C address not supported");
+			return false;
+		}
+
+		return true;
+	}
+
 	switch (adev->asic_type) {
 	case CHIP_VEGA20:
 		control->i2c_address = EEPROM_I2C_MADDR_VEGA20;

drivers/gpu/drm/amd/include/atomfirmware.h

@@ -590,7 +590,7 @@ struct atom_firmware_info_v3_4 {
 	uint8_t  board_i2c_feature_id;            // enum of atom_board_i2c_feature_id_def
 	uint8_t  board_i2c_feature_gpio_id;       // i2c id find in gpio_lut data table gpio_id
 	uint8_t  board_i2c_feature_slave_addr;
-	uint8_t  reserved3;
+	uint8_t  ras_rom_i2c_slave_addr;
 	uint16_t bootup_mvddq_mv;
 	uint16_t bootup_mvpp_mv;
 	uint32_t zfbstartaddrin16mb;