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habanalabs: unify and improve device cpu init

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Move the code of device CPU initialization from being ASIC-Dependent to
common code. In addition, add support for the new error reporting feature
of the firmware boot code.

Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Oded Gabbay 2020-03-26 12:32:56 +02:00
parent 1fa185c656
commit 7e1c07dd35
5 changed files with 220 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

188
drivers/misc/habanalabs/firmware_if.c
View File

@ -6,20 +6,21 @@
*/
#include "habanalabs.h"
#include "include/hl_boot_if.h"
#include <linux/firmware.h>
#include <linux/genalloc.h>
#include <linux/io-64-nonatomic-lo-hi.h>
/**
* hl_fw_push_fw_to_device() - Push FW code to device.
* hl_fw_load_fw_to_device() - Load F/W code to device's memory.
* @hdev: pointer to hl_device structure.
*
* Copy fw code from firmware file to device memory.
*
* Return: 0 on success, non-zero for failure.
*/
int hl_fw_push_fw_to_device(struct hl_device *hdev, const char *fw_name,
int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
void __iomem *dst)
{
const struct firmware *fw;
@ -286,3 +287,186 @@ int hl_fw_get_eeprom_data(struct hl_device *hdev, void *data, size_t max_size)
return rc;
}
static void fw_read_errors(struct hl_device *hdev, u32 boot_err0_reg)
{
u32 err_val;
/* Some of the firmware status codes are deprecated in newer f/w
* versions. In those versions, the errors are reported
* in different registers. Therefore, we need to check those
* registers and print the exact errors. Moreover, there
* may be multiple errors, so we need to report on each error
* separately. Some of the error codes might indicate a state
* that is not an error per-se, but it is an error in production
* environment
*/
err_val = RREG32(boot_err0_reg);
if (!(err_val & CPU_BOOT_ERR0_ENABLED))
return;
if (err_val & CPU_BOOT_ERR0_DRAM_INIT_FAIL)
dev_err(hdev->dev,
"Device boot error - DRAM initialization failed\n");
if (err_val & CPU_BOOT_ERR0_FIT_CORRUPTED)
dev_err(hdev->dev, "Device boot error - FIT image corrupted\n");
if (err_val & CPU_BOOT_ERR0_TS_INIT_FAIL)
dev_err(hdev->dev,
"Device boot error - Thermal Sensor initialization failed\n");
if (err_val & CPU_BOOT_ERR0_DRAM_SKIPPED)
dev_warn(hdev->dev,
"Device boot warning - Skipped DRAM initialization\n");
if (err_val & CPU_BOOT_ERR0_BMC_WAIT_SKIPPED)
dev_warn(hdev->dev,
"Device boot error - Skipped waiting for BMC\n");
if (err_val & CPU_BOOT_ERR0_NIC_DATA_NOT_RDY)
dev_err(hdev->dev,
"Device boot error - Serdes data from BMC not available\n");
if (err_val & CPU_BOOT_ERR0_NIC_FW_FAIL)
dev_err(hdev->dev,
"Device boot error - NIC F/W initialization failed\n");
}
int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
u32 msg_to_cpu_reg, u32 boot_err0_reg, bool skip_bmc,
u32 cpu_timeout)
{
u32 status;
int rc;
dev_info(hdev->dev, "Going to wait for device boot (up to %lds)\n",
cpu_timeout / USEC_PER_SEC);
/* Make sure CPU boot-loader is running */
rc = hl_poll_timeout(
hdev,
cpu_boot_status_reg,
status,
(status == CPU_BOOT_STATUS_DRAM_RDY) ||
(status == CPU_BOOT_STATUS_NIC_FW_RDY) ||
(status == CPU_BOOT_STATUS_READY_TO_BOOT) ||
(status == CPU_BOOT_STATUS_SRAM_AVAIL),
10000,
cpu_timeout);
/* Read U-Boot, preboot versions now in case we will later fail */
hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_UBOOT);
hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_PREBOOT);
/* Some of the status codes below are deprecated in newer f/w
* versions but we keep them here for backward compatibility
*/
if (rc) {
switch (status) {
case CPU_BOOT_STATUS_NA:
dev_err(hdev->dev,
"Device boot error - BTL did NOT run\n");
break;
case CPU_BOOT_STATUS_IN_WFE:
dev_err(hdev->dev,
"Device boot error - Stuck inside WFE loop\n");
break;
case CPU_BOOT_STATUS_IN_BTL:
dev_err(hdev->dev,
"Device boot error - Stuck in BTL\n");
break;
case CPU_BOOT_STATUS_IN_PREBOOT:
dev_err(hdev->dev,
"Device boot error - Stuck in Preboot\n");
break;
case CPU_BOOT_STATUS_IN_SPL:
dev_err(hdev->dev,
"Device boot error - Stuck in SPL\n");
break;
case CPU_BOOT_STATUS_IN_UBOOT:
dev_err(hdev->dev,
"Device boot error - Stuck in u-boot\n");
break;
case CPU_BOOT_STATUS_DRAM_INIT_FAIL:
dev_err(hdev->dev,
"Device boot error - DRAM initialization failed\n");
break;
case CPU_BOOT_STATUS_UBOOT_NOT_READY:
dev_err(hdev->dev,
"Device boot error - u-boot stopped by user\n");
break;
case CPU_BOOT_STATUS_TS_INIT_FAIL:
dev_err(hdev->dev,
"Device boot error - Thermal Sensor initialization failed\n");
break;
default:
dev_err(hdev->dev,
"Device boot error - Invalid status code\n");
break;
}
rc = -EIO;
goto out;
}
if (!hdev->fw_loading) {
dev_info(hdev->dev, "Skip loading FW\n");
goto out;
}
if (status == CPU_BOOT_STATUS_SRAM_AVAIL)
goto out;
dev_info(hdev->dev,
"Loading firmware to device, may take some time...\n");
rc = hdev->asic_funcs->load_firmware_to_device(hdev);
if (rc)
goto out;
if (skip_bmc) {
WREG32(msg_to_cpu_reg, KMD_MSG_SKIP_BMC);
rc = hl_poll_timeout(
hdev,
cpu_boot_status_reg,
status,
(status == CPU_BOOT_STATUS_BMC_WAITING_SKIPPED),
10000,
cpu_timeout);
if (rc) {
dev_err(hdev->dev,
"Failed to get ACK on skipping BMC, %d\n",
status);
WREG32(msg_to_cpu_reg, KMD_MSG_NA);
rc = -EIO;
goto out;
}
}
WREG32(msg_to_cpu_reg, KMD_MSG_FIT_RDY);
rc = hl_poll_timeout(
hdev,
cpu_boot_status_reg,
status,
(status == CPU_BOOT_STATUS_SRAM_AVAIL),
10000,
cpu_timeout);
if (rc) {
if (status == CPU_BOOT_STATUS_FIT_CORRUPTED)
dev_err(hdev->dev,
"Device reports FIT image is corrupted\n");
else
dev_err(hdev->dev,
"Device failed to load, %d\n", status);
WREG32(msg_to_cpu_reg, KMD_MSG_NA);
rc = -EIO;
goto out;
}
dev_info(hdev->dev, "Successfully loaded firmware to device\n");
out:
fw_read_errors(hdev, boot_err0_reg);
return rc;
}

116
drivers/misc/habanalabs/goya/goya.c
View File

@ -2223,24 +2223,24 @@ static int goya_push_uboot_to_device(struct hl_device *hdev)
dst = hdev->pcie_bar[SRAM_CFG_BAR_ID] + UBOOT_FW_OFFSET;
return hl_fw_push_fw_to_device(hdev, GOYA_UBOOT_FW_FILE, dst);
return hl_fw_load_fw_to_device(hdev, GOYA_UBOOT_FW_FILE, dst);
}
/*
* goya_push_linux_to_device() - Push LINUX FW code to device.
* goya_load_firmware_to_device() - Load LINUX FW code to device.
* @hdev: Pointer to hl_device structure.
*
* Copy LINUX fw code from firmware file to HBM BAR.
*
* Return: 0 on success, non-zero for failure.
*/
static int goya_push_linux_to_device(struct hl_device *hdev)
static int goya_load_firmware_to_device(struct hl_device *hdev)
{
void __iomem *dst;
dst = hdev->pcie_bar[DDR_BAR_ID] + LINUX_FW_OFFSET;
return hl_fw_push_fw_to_device(hdev, GOYA_LINUX_FW_FILE, dst);
return hl_fw_load_fw_to_device(hdev, GOYA_LINUX_FW_FILE, dst);
}
static int goya_pldm_init_cpu(struct hl_device *hdev)
@ -2266,7 +2266,7 @@ static int goya_pldm_init_cpu(struct hl_device *hdev)
if (rc)
return rc;
rc = goya_push_linux_to_device(hdev);
rc = goya_load_firmware_to_device(hdev);
if (rc)
return rc;
@ -2291,7 +2291,7 @@ static int goya_pldm_init_cpu(struct hl_device *hdev)
* The version string should be located by that offset.
*/
static void goya_read_device_fw_version(struct hl_device *hdev,
enum goya_fw_component fwc)
enum hl_fw_component fwc)
{
const char *name;
u32 ver_off;
@ -2328,7 +2328,6 @@ static void goya_read_device_fw_version(struct hl_device *hdev,
static int goya_init_cpu(struct hl_device *hdev, u32 cpu_timeout)
{
struct goya_device *goya = hdev->asic_specific;
u32 status;
int rc;
if (!hdev->cpu_enable)
@ -2355,106 +2354,13 @@ static int goya_init_cpu(struct hl_device *hdev, u32 cpu_timeout)
goto out;
}
/* Make sure CPU boot-loader is running */
rc = hl_poll_timeout(
hdev,
mmPSOC_GLOBAL_CONF_WARM_REBOOT,
status,
(status == CPU_BOOT_STATUS_DRAM_RDY) ||
(status == CPU_BOOT_STATUS_SRAM_AVAIL),
10000,
cpu_timeout);
rc = hl_fw_init_cpu(hdev, mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS,
mmPSOC_GLOBAL_CONF_UBOOT_MAGIC, mmCPU_BOOT_ERR0,
false, cpu_timeout);
/* Read U-Boot version now in case we will later fail */
goya_read_device_fw_version(hdev, FW_COMP_UBOOT);
goya_read_device_fw_version(hdev, FW_COMP_PREBOOT);
if (rc) {
dev_err(hdev->dev, "Error in ARM u-boot!");
switch (status) {
case CPU_BOOT_STATUS_NA:
dev_err(hdev->dev,
"ARM status %d - BTL did NOT run\n", status);
break;
case CPU_BOOT_STATUS_IN_WFE:
dev_err(hdev->dev,
"ARM status %d - Inside WFE loop\n", status);
break;
case CPU_BOOT_STATUS_IN_BTL:
dev_err(hdev->dev,
"ARM status %d - Stuck in BTL\n", status);
break;
case CPU_BOOT_STATUS_IN_PREBOOT:
dev_err(hdev->dev,
"ARM status %d - Stuck in Preboot\n", status);
break;
case CPU_BOOT_STATUS_IN_SPL:
dev_err(hdev->dev,
"ARM status %d - Stuck in SPL\n", status);
break;
case CPU_BOOT_STATUS_IN_UBOOT:
dev_err(hdev->dev,
"ARM status %d - Stuck in u-boot\n", status);
break;
case CPU_BOOT_STATUS_DRAM_INIT_FAIL:
dev_err(hdev->dev,
"ARM status %d - DDR initialization failed\n",
status);
break;
case CPU_BOOT_STATUS_UBOOT_NOT_READY:
dev_err(hdev->dev,
"ARM status %d - u-boot stopped by user\n",
status);
break;
case CPU_BOOT_STATUS_TS_INIT_FAIL:
dev_err(hdev->dev,
"ARM status %d - Thermal Sensor initialization failed\n",
status);
break;
default:
dev_err(hdev->dev,
"ARM status %d - Invalid status code\n",
status);
break;
}
return -EIO;
}
if (!hdev->fw_loading) {
dev_info(hdev->dev, "Skip loading FW\n");
goto out;
}
if (status == CPU_BOOT_STATUS_SRAM_AVAIL)
goto out;
rc = goya_push_linux_to_device(hdev);
if (rc)
return rc;
WREG32(mmPSOC_GLOBAL_CONF_UBOOT_MAGIC, KMD_MSG_FIT_RDY);
rc = hl_poll_timeout(
hdev,
mmPSOC_GLOBAL_CONF_WARM_REBOOT,
status,
(status == CPU_BOOT_STATUS_SRAM_AVAIL),
10000,
cpu_timeout);
if (rc) {
if (status == CPU_BOOT_STATUS_FIT_CORRUPTED)
dev_err(hdev->dev,
"ARM u-boot reports FIT image is corrupted\n");
else
dev_err(hdev->dev,
"ARM Linux failed to load, %d\n", status);
WREG32(mmPSOC_GLOBAL_CONF_UBOOT_MAGIC, KMD_MSG_NA);
return -EIO;
}
dev_info(hdev->dev, "Successfully loaded firmware to device\n");
out:
goya->hw_cap_initialized |= HW_CAP_CPU;
@ -5339,7 +5245,9 @@ static const struct hl_asic_funcs goya_funcs = {
.wreg = hl_wreg,
.halt_coresight = goya_halt_coresight,
.get_clk_rate = goya_get_clk_rate,
.get_queue_id_for_cq = goya_get_queue_id_for_cq
.get_queue_id_for_cq = goya_get_queue_id_for_cq,
.read_device_fw_version = goya_read_device_fw_version,
.load_firmware_to_device = goya_load_firmware_to_device
};
/*

5
drivers/misc/habanalabs/goya/goyaP.h
View File

@ -149,11 +149,6 @@
#define HW_CAP_GOLDEN 0x00000400
#define HW_CAP_TPC 0x00000800
enum goya_fw_component {
FW_COMP_UBOOT,
FW_COMP_PREBOOT
};
struct goya_device {
/* TODO: remove hw_queues_lock after moving to scheduler code */
spinlock_t hw_queues_lock;

21
drivers/misc/habanalabs/habanalabs.h
View File

@ -75,6 +75,16 @@ struct pgt_info {
struct hl_device;
struct hl_fpriv;
/**
* enum hl_fw_component - F/W components to read version through registers.
* @FW_COMP_UBOOT: u-boot.
* @FW_COMP_PREBOOT: preboot.
*/
enum hl_fw_component {
FW_COMP_UBOOT,
FW_COMP_PREBOOT
};
/**
* enum hl_queue_type - Supported QUEUE types.
* @QUEUE_TYPE_NA: queue is not available.
@ -539,6 +549,9 @@ enum hl_pll_frequency {
* @halt_coresight: stop the ETF and ETR traces.
* @get_clk_rate: Retrieve the ASIC current and maximum clock rate in MHz
* @get_queue_id_for_cq: Get the H/W queue id related to the given CQ index.
* @read_device_fw_version: read the device's firmware versions that are
* contained in registers
* @load_firmware_to_device: load the firmware to the device's memory
*/
struct hl_asic_funcs {
int (*early_init)(struct hl_device *hdev);
@ -626,6 +639,9 @@ struct hl_asic_funcs {
void (*halt_coresight)(struct hl_device *hdev);
int (*get_clk_rate)(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk);
u32 (*get_queue_id_for_cq)(struct hl_device *hdev, u32 cq_idx);
void (*read_device_fw_version)(struct hl_device *hdev,
enum hl_fw_component fwc);
int (*load_firmware_to_device)(struct hl_device *hdev);
};
@ -1591,7 +1607,7 @@ int hl_mmu_unmap(struct hl_ctx *ctx, u64 virt_addr, u32 page_size,
void hl_mmu_swap_out(struct hl_ctx *ctx);
void hl_mmu_swap_in(struct hl_ctx *ctx);
int hl_fw_push_fw_to_device(struct hl_device *hdev, const char *fw_name,
int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
void __iomem *dst);
int hl_fw_send_pci_access_msg(struct hl_device *hdev, u32 opcode);
int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
@ -1604,6 +1620,9 @@ void hl_fw_cpu_accessible_dma_pool_free(struct hl_device *hdev, size_t size,
int hl_fw_send_heartbeat(struct hl_device *hdev);
int hl_fw_armcp_info_get(struct hl_device *hdev);
int hl_fw_get_eeprom_data(struct hl_device *hdev, void *data, size_t max_size);
int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
u32 msg_to_cpu_reg, u32 boot_err0_reg, bool skip_bmc,
u32 cpu_timeout);
int hl_pci_bars_map(struct hl_device *hdev, const char * const name[3],
bool is_wc[3]);

3
drivers/misc/habanalabs/include/hl_boot_if.h
View File

@ -42,7 +42,8 @@ enum cpu_boot_status {
enum kmd_msg {
KMD_MSG_NA = 0,
KMD_MSG_GOTO_WFE,
KMD_MSG_FIT_RDY
KMD_MSG_FIT_RDY,
KMD_MSG_SKIP_BMC,
};
#endif /* HL_BOOT_IF_H */