[PATCH 22/40] drm/amdgpu: RAS and FRU now use 19-bit I2C address
Luben Tuikov
luben.tuikov at amd.com
Mon Jun 14 17:46:14 UTC 2021
Convert RAS and FRU code to use the 19-bit I2C
memory address and remove all "slave_addr", as
this is now absolved into the 19-bit address.
Cc: Jean Delvare <jdelvare at suse.de>
Cc: John Clements <john.clements at amd.com>
Cc: Alexander Deucher <Alexander.Deucher at amd.com>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>
Cc: Lijo Lazar <Lijo.Lazar at amd.com>
Cc: Stanley Yang <Stanley.Yang at amd.com>
Cc: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov at amd.com>
Acked-by: Alexander Deucher <Alexander.Deucher at amd.com>
---
.../gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c | 19 ++---
.../gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 82 +++++++------------
.../gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h | 2 +-
3 files changed, 39 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
index 2b854bc6ae34bb..69b9559f840ac3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
@@ -29,8 +29,8 @@
#include "amdgpu_fru_eeprom.h"
#include "amdgpu_eeprom.h"
-#define I2C_PRODUCT_INFO_ADDR 0x56
-#define I2C_PRODUCT_INFO_OFFSET 0xC0
+#define FRU_EEPROM_MADDR 0x60000
+#define I2C_PRODUCT_INFO_OFFSET 0xC0
static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
{
@@ -62,12 +62,11 @@ static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
}
static int amdgpu_fru_read_eeprom(struct amdgpu_device *adev, uint32_t addrptr,
- unsigned char *buff)
+ unsigned char *buff)
{
int ret, size;
- ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, I2C_PRODUCT_INFO_ADDR,
- addrptr, buff, 1, true);
+ ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, addrptr, buff, 1, true);
if (ret < 1) {
DRM_WARN("FRU: Failed to get size field");
return ret;
@@ -78,8 +77,8 @@ static int amdgpu_fru_read_eeprom(struct amdgpu_device *adev, uint32_t addrptr,
*/
size = buff[0] - I2C_PRODUCT_INFO_OFFSET;
- ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, I2C_PRODUCT_INFO_ADDR,
- addrptr + 1, buff, size, true);
+ ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, addrptr + 1, buff, size,
+ true);
if (ret < 1) {
DRM_WARN("FRU: Failed to get data field");
return ret;
@@ -91,8 +90,8 @@ static int amdgpu_fru_read_eeprom(struct amdgpu_device *adev, uint32_t addrptr,
int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
{
unsigned char buff[34];
- int addrptr, size;
- int len;
+ u32 addrptr;
+ int size, len;
if (!is_fru_eeprom_supported(adev))
return 0;
@@ -115,7 +114,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
* Bytes 8-a are all 1-byte and refer to the size of the entire struct,
* and the language field, so just start from 0xb, manufacturer size
*/
- addrptr = 0xb;
+ addrptr = FRU_EEPROM_MADDR + 0xb;
size = amdgpu_fru_read_eeprom(adev, addrptr, buff);
if (size < 1) {
DRM_ERROR("Failed to read FRU Manufacturer, ret:%d", size);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index 2b981e96ce5b9e..f316fb11b16d9e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -28,11 +28,11 @@
#include "atom.h"
#include "amdgpu_eeprom.h"
-#define EEPROM_I2C_TARGET_ADDR_VEGA20 0x50
-#define EEPROM_I2C_TARGET_ADDR_ARCTURUS 0x54
-#define EEPROM_I2C_TARGET_ADDR_ARCTURUS_D342 0x50
-#define EEPROM_I2C_TARGET_ADDR_SIENNA_CICHLID 0x50
-#define EEPROM_I2C_TARGET_ADDR_ALDEBARAN 0x50
+#define EEPROM_I2C_MADDR_VEGA20 0x0
+#define EEPROM_I2C_MADDR_ARCTURUS 0x40000
+#define EEPROM_I2C_MADDR_ARCTURUS_D342 0x0
+#define EEPROM_I2C_MADDR_SIENNA_CICHLID 0x0
+#define EEPROM_I2C_MADDR_ALDEBARAN 0x0
/*
* The 2 macros bellow represent the actual size in bytes that
@@ -58,7 +58,6 @@
#define EEPROM_HDR_START 0
#define EEPROM_RECORD_START (EEPROM_HDR_START + EEPROM_TABLE_HEADER_SIZE)
#define EEPROM_MAX_RECORD_NUM ((EEPROM_SIZE_BYTES - EEPROM_TABLE_HEADER_SIZE) / EEPROM_TABLE_RECORD_SIZE)
-#define EEPROM_ADDR_MSB_MASK GENMASK(17, 8)
#define to_amdgpu_device(x) (container_of(x, struct amdgpu_ras, eeprom_control))->adev
@@ -74,43 +73,43 @@ static bool __is_ras_eeprom_supported(struct amdgpu_device *adev)
}
static bool __get_eeprom_i2c_addr_arct(struct amdgpu_device *adev,
- uint16_t *i2c_addr)
+ struct amdgpu_ras_eeprom_control *control)
{
struct atom_context *atom_ctx = adev->mode_info.atom_context;
- if (!i2c_addr || !atom_ctx)
+ if (!control || !atom_ctx)
return false;
if (strnstr(atom_ctx->vbios_version,
"D342",
sizeof(atom_ctx->vbios_version)))
- *i2c_addr = EEPROM_I2C_TARGET_ADDR_ARCTURUS_D342;
+ control->i2c_address = EEPROM_I2C_MADDR_ARCTURUS_D342;
else
- *i2c_addr = EEPROM_I2C_TARGET_ADDR_ARCTURUS;
+ control->i2c_address = EEPROM_I2C_MADDR_ARCTURUS;
return true;
}
static bool __get_eeprom_i2c_addr(struct amdgpu_device *adev,
- uint16_t *i2c_addr)
+ struct amdgpu_ras_eeprom_control *control)
{
- if (!i2c_addr)
+ if (!control)
return false;
switch (adev->asic_type) {
case CHIP_VEGA20:
- *i2c_addr = EEPROM_I2C_TARGET_ADDR_VEGA20;
+ control->i2c_address = EEPROM_I2C_MADDR_VEGA20;
break;
case CHIP_ARCTURUS:
- return __get_eeprom_i2c_addr_arct(adev, i2c_addr);
+ return __get_eeprom_i2c_addr_arct(adev, control);
case CHIP_SIENNA_CICHLID:
- *i2c_addr = EEPROM_I2C_TARGET_ADDR_SIENNA_CICHLID;
+ control->i2c_address = EEPROM_I2C_MADDR_SIENNA_CICHLID;
break;
case CHIP_ALDEBARAN:
- *i2c_addr = EEPROM_I2C_TARGET_ADDR_ALDEBARAN;
+ control->i2c_address = EEPROM_I2C_MADDR_ALDEBARAN;
break;
default:
@@ -154,8 +153,9 @@ static int __update_table_header(struct amdgpu_ras_eeprom_control *control,
/* i2c may be unstable in gpu reset */
down_read(&adev->reset_sem);
- ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, control->i2c_address,
- EEPROM_HDR_START, buff, EEPROM_TABLE_HEADER_SIZE, false);
+ ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c,
+ control->i2c_address + EEPROM_HDR_START,
+ buff, EEPROM_TABLE_HEADER_SIZE, false);
up_read(&adev->reset_sem);
if (ret < 1)
@@ -277,7 +277,7 @@ int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control)
}
int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
- bool *exceed_err_limit)
+ bool *exceed_err_limit)
{
int ret = 0;
struct amdgpu_device *adev = to_amdgpu_device(control);
@@ -294,14 +294,15 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
if (!adev->pm.smu_i2c.algo)
return -ENOENT;
- if (!__get_eeprom_i2c_addr(adev, &control->i2c_address))
+ if (!__get_eeprom_i2c_addr(adev, control))
return -EINVAL;
mutex_init(&control->tbl_mutex);
/* Read/Create table header from EEPROM address 0 */
- ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, control->i2c_address,
- EEPROM_HDR_START, buff, EEPROM_TABLE_HEADER_SIZE, true);
+ ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c,
+ control->i2c_address + EEPROM_HDR_START,
+ buff, EEPROM_TABLE_HEADER_SIZE, true);
if (ret < 1) {
DRM_ERROR("Failed to read EEPROM table header, ret:%d", ret);
return ret;
@@ -395,8 +396,6 @@ static void __decode_table_record_from_buff(struct amdgpu_ras_eeprom_control *co
/*
* When reaching end of EEPROM memory jump back to 0 record address
- * When next record access will go beyond EEPROM page boundary modify bits A17/A8
- * in I2C selector to go to next page
*/
static uint32_t __correct_eeprom_dest_address(uint32_t curr_address)
{
@@ -409,20 +408,6 @@ static uint32_t __correct_eeprom_dest_address(uint32_t curr_address)
return EEPROM_RECORD_START;
}
- /*
- * To check if we overflow page boundary compare next address with
- * current and see if bits 17/8 of the EEPROM address will change
- * If they do start from the next 256b page
- *
- * https://www.st.com/resource/en/datasheet/m24m02-dr.pdf sec. 5.1.2
- */
- if ((curr_address & EEPROM_ADDR_MSB_MASK) != (next_address & EEPROM_ADDR_MSB_MASK)) {
- DRM_DEBUG_DRIVER("Reached end of EEPROM memory page, jumping to next: %lx",
- (next_address & EEPROM_ADDR_MSB_MASK));
-
- return (next_address & EEPROM_ADDR_MSB_MASK);
- }
-
return curr_address;
}
@@ -452,22 +437,20 @@ bool amdgpu_ras_eeprom_check_err_threshold(struct amdgpu_device *adev)
}
int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control,
- struct eeprom_table_record *records,
- bool write,
- int num)
+ struct eeprom_table_record *records,
+ bool write, int num)
{
int i, ret = 0;
unsigned char *buffs, *buff;
struct eeprom_table_record *record;
struct amdgpu_device *adev = to_amdgpu_device(control);
struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
- u16 slave_addr;
if (!__is_ras_eeprom_supported(adev))
return 0;
buffs = kcalloc(num, EEPROM_ADDRESS_SIZE + EEPROM_TABLE_RECORD_SIZE,
- GFP_KERNEL);
+ GFP_KERNEL);
if (!buffs)
return -ENOMEM;
@@ -507,22 +490,15 @@ int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control,
control->next_addr = __correct_eeprom_dest_address(control->next_addr);
- /*
- * Update bits 16,17 of EEPROM address in I2C address by setting them
- * to bits 1,2 of Device address byte
- */
- slave_addr = control->i2c_address |
- ((control->next_addr & EEPROM_ADDR_MSB_MASK) >> 15);
-
/* EEPROM table content is stored in LE format */
if (write)
__encode_table_record_to_buff(control, record, buff);
/* i2c may be unstable in gpu reset */
down_read(&adev->reset_sem);
- ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c, slave_addr,
- control->next_addr, buff,
- EEPROM_TABLE_RECORD_SIZE, write ? false : true);
+ ret = amdgpu_eeprom_xfer(&adev->pm.smu_i2c,
+ control->i2c_address + control->next_addr,
+ buff, EEPROM_TABLE_RECORD_SIZE, !write);
up_read(&adev->reset_sem);
if (ret < 1) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
index 17872117097455..4c4c3d840a35c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
@@ -44,11 +44,11 @@ struct amdgpu_ras_eeprom_table_header {
struct amdgpu_ras_eeprom_control {
struct amdgpu_ras_eeprom_table_header tbl_hdr;
+ u32 i2c_address; /* Base I2C 19-bit memory address */
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
};
/*
--
2.32.0
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