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habanalabs: wait for preboot ready after hard reset 

Currently we are not waiting for preboot ready after hard reset.
This leads to a race in which COMMs protocol begins but will get no
response from the f/w.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ohad Sharabi 2022-06-28 12:09:21 +03:00 committed by Oded Gabbay
parent a85e389a84
commit 2b9e583d0a
5 changed files with 107 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
drivers/misc/habanalabs/common/firmware_if.c
View File

@ -1245,15 +1245,10 @@ static void detect_cpu_boot_status(struct hl_device *hdev, u32 status)
}
}
static int hl_fw_read_preboot_caps(struct hl_device *hdev,
u32 cpu_boot_status_reg,
u32 sts_boot_dev_sts0_reg,
u32 sts_boot_dev_sts1_reg,
u32 boot_err0_reg, u32 boot_err1_reg,
u32 timeout)
static int hl_fw_wait_preboot_ready(struct hl_device *hdev)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
u32 status, reg_val;
struct pre_fw_load_props *pre_fw_load = &hdev->fw_loader.pre_fw_load;
u32 status;
int rc;
/* Need to check two possible scenarios:
@ -1266,13 +1261,13 @@ static int hl_fw_read_preboot_caps(struct hl_device *hdev,
*/
rc = hl_poll_timeout(
hdev,
cpu_boot_status_reg,
pre_fw_load->cpu_boot_status_reg,
status,
(status == CPU_BOOT_STATUS_NIC_FW_RDY) ||
(status == CPU_BOOT_STATUS_READY_TO_BOOT) ||
(status == CPU_BOOT_STATUS_WAITING_FOR_BOOT_FIT),
hdev->fw_poll_interval_usec,
timeout);
pre_fw_load->wait_for_preboot_timeout);
if (rc) {
dev_err(hdev->dev, "CPU boot ready status timeout\n");
@ -1282,12 +1277,32 @@ static int hl_fw_read_preboot_caps(struct hl_device *hdev,
* of reading specific errors
*/
if (status != -1)
fw_read_errors(hdev, boot_err0_reg, boot_err1_reg,
sts_boot_dev_sts0_reg,
sts_boot_dev_sts1_reg);
fw_read_errors(hdev, pre_fw_load->boot_err0_reg,
pre_fw_load->boot_err1_reg,
pre_fw_load->sts_boot_dev_sts0_reg,
pre_fw_load->sts_boot_dev_sts1_reg);
return -EIO;
}
hdev->fw_loader.fw_comp_loaded |= FW_TYPE_PREBOOT_CPU;
return 0;
}
static int hl_fw_read_preboot_caps(struct hl_device *hdev)
{
struct pre_fw_load_props *pre_fw_load;
struct asic_fixed_properties *prop;
u32 reg_val;
int rc;
prop = &hdev->asic_prop;
pre_fw_load = &hdev->fw_loader.pre_fw_load;
rc = hl_fw_wait_preboot_ready(hdev);
if (rc)
return rc;
/*
* the registers DEV_STS* contain FW capabilities/features.
* We can rely on this registers only if bit CPU_BOOT_DEV_STS*_ENABLED
@ -1298,13 +1313,13 @@ static int hl_fw_read_preboot_caps(struct hl_device *hdev,
* In case it is not enabled the stored value will be left 0- all
* caps/features are off
*/
reg_val = RREG32(sts_boot_dev_sts0_reg);
reg_val = RREG32(pre_fw_load->sts_boot_dev_sts0_reg);
if (reg_val & CPU_BOOT_DEV_STS0_ENABLED) {
prop->fw_cpu_boot_dev_sts0_valid = true;
prop->fw_preboot_cpu_boot_dev_sts0 = reg_val;
}
reg_val = RREG32(sts_boot_dev_sts1_reg);
reg_val = RREG32(pre_fw_load->sts_boot_dev_sts1_reg);
if (reg_val & CPU_BOOT_DEV_STS1_ENABLED) {
prop->fw_cpu_boot_dev_sts1_valid = true;
prop->fw_preboot_cpu_boot_dev_sts1 = reg_val;
@ -1447,24 +1462,21 @@ static int hl_fw_static_read_preboot_status(struct hl_device *hdev)
return 0;
}
int hl_fw_read_preboot_status(struct hl_device *hdev, u32 cpu_boot_status_reg,
u32 sts_boot_dev_sts0_reg,
u32 sts_boot_dev_sts1_reg, u32 boot_err0_reg,
u32 boot_err1_reg, u32 timeout)
int hl_fw_read_preboot_status(struct hl_device *hdev)
{
int rc;
if (!(hdev->fw_components & FW_TYPE_PREBOOT_CPU))
return 0;
/* get FW pre-load parameters */
hdev->asic_funcs->init_firmware_preload_params(hdev);
/*
* In order to determine boot method (static VS dymanic) we need to
* read the boot caps register
*/
rc = hl_fw_read_preboot_caps(hdev, cpu_boot_status_reg,
sts_boot_dev_sts0_reg,
sts_boot_dev_sts1_reg, boot_err0_reg,
boot_err1_reg, timeout);
rc = hl_fw_read_preboot_caps(hdev);
if (rc)
return rc;
@ -2454,6 +2466,13 @@ static int hl_fw_dynamic_init_cpu(struct hl_device *hdev,
*/
dyn_regs = &fw_loader->dynamic_loader.comm_desc.cpu_dyn_regs;
/* if no preboot loaded indication- wait for preboot */
if (!(hdev->fw_loader.fw_comp_loaded & FW_TYPE_PREBOOT_CPU)) {
rc = hl_fw_wait_preboot_ready(hdev);
if (rc)
return -EIO;
}
rc = hl_fw_dynamic_send_protocol_cmd(hdev, fw_loader, COMMS_RST_STATE,
0, true,
fw_loader->cpu_timeout);

27
drivers/misc/habanalabs/common/habanalabs.h
View File

@ -1307,6 +1307,24 @@ struct dynamic_fw_load_mgr {
bool fw_desc_valid;
};
/**
* struct pre_fw_load_props - needed properties for pre-FW load
* @cpu_boot_status_reg: cpu_boot_status register address
* @sts_boot_dev_sts0_reg: sts_boot_dev_sts0 register address
* @sts_boot_dev_sts1_reg: sts_boot_dev_sts1 register address
* @boot_err0_reg: boot_err0 register address
* @boot_err1_reg: boot_err1 register address
* @wait_for_preboot_timeout: timeout to poll for preboot ready
*/
struct pre_fw_load_props {
u32 cpu_boot_status_reg;
u32 sts_boot_dev_sts0_reg;
u32 sts_boot_dev_sts1_reg;
u32 boot_err0_reg;
u32 boot_err1_reg;
u32 wait_for_preboot_timeout;
};
/**
* struct fw_image_props - properties of FW image
* @image_name: name of the image
@ -1323,6 +1341,7 @@ struct fw_image_props {
* struct fw_load_mgr - manager FW loading process
* @dynamic_loader: specific structure for dynamic load
* @static_loader: specific structure for static load
* @pre_fw_load_props: parameter for pre FW load
* @boot_fit_img: boot fit image properties
* @linux_img: linux image properties
* @cpu_timeout: CPU response timeout in usec
@ -1338,6 +1357,7 @@ struct fw_load_mgr {
struct dynamic_fw_load_mgr dynamic_loader;
struct static_fw_load_mgr static_loader;
};
struct pre_fw_load_props pre_fw_load;
struct fw_image_props boot_fit_img;
struct fw_image_props linux_img;
u32 cpu_timeout;
@ -1467,6 +1487,7 @@ struct hl_cs;
* @get_msi_info: Retrieve asic-specific MSI ID of the f/w async event
* @map_pll_idx_to_fw_idx: convert driver specific per asic PLL index to
* generic f/w compatible PLL Indexes
* @init_firmware_preload_params: initialize pre FW-load parameters.
* @init_firmware_loader: initialize data for FW loader.
* @init_cpu_scrambler_dram: Enable CPU specific DRAM scrambling
* @state_dump_init: initialize constants required for state dump
@ -1599,6 +1620,7 @@ struct hl_asic_funcs {
int (*ack_mmu_errors)(struct hl_device *hdev, u64 mmu_cap_mask);
void (*get_msi_info)(__le32 *table);
int (*map_pll_idx_to_fw_idx)(u32 pll_idx);
void (*init_firmware_preload_params)(struct hl_device *hdev);
void (*init_firmware_loader)(struct hl_device *hdev);
void (*init_cpu_scrambler_dram)(struct hl_device *hdev);
void (*state_dump_init)(struct hl_device *hdev);
@ -3577,10 +3599,7 @@ int hl_fw_cpucp_power_get(struct hl_device *hdev, u64 *power);
void hl_fw_ask_hard_reset_without_linux(struct hl_device *hdev);
void hl_fw_ask_halt_machine_without_linux(struct hl_device *hdev);
int hl_fw_init_cpu(struct hl_device *hdev);
int hl_fw_read_preboot_status(struct hl_device *hdev, u32 cpu_boot_status_reg,
u32 sts_boot_dev_sts0_reg,
u32 sts_boot_dev_sts1_reg, u32 boot_err0_reg,
u32 boot_err1_reg, u32 timeout);
int hl_fw_read_preboot_status(struct hl_device *hdev);
int hl_fw_dynamic_send_protocol_cmd(struct hl_device *hdev,
struct fw_load_mgr *fw_loader,
enum comms_cmd cmd, unsigned int size,

19
drivers/misc/habanalabs/gaudi/gaudi.c
View File

@ -869,11 +869,7 @@ pci_init:
/* Before continuing in the initialization, we need to read the preboot
* version to determine whether we run with a security-enabled firmware
*/
rc = hl_fw_read_preboot_status(hdev, mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS,
mmCPU_BOOT_DEV_STS0,
mmCPU_BOOT_DEV_STS1, mmCPU_BOOT_ERR0,
mmCPU_BOOT_ERR1,
GAUDI_BOOT_FIT_REQ_TIMEOUT_USEC);
rc = hl_fw_read_preboot_status(hdev);
if (rc) {
if (hdev->reset_on_preboot_fail)
hdev->asic_funcs->hw_fini(hdev, true, false);
@ -3840,6 +3836,18 @@ static void gaudi_init_static_firmware_loader(struct hl_device *hdev)
GAUDI_CPU_RESET_WAIT_MSEC;
}
static void gaudi_init_firmware_preload_params(struct hl_device *hdev)
{
struct pre_fw_load_props *pre_fw_load = &hdev->fw_loader.pre_fw_load;
pre_fw_load->cpu_boot_status_reg = mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS;
pre_fw_load->sts_boot_dev_sts0_reg = mmCPU_BOOT_DEV_STS0;
pre_fw_load->sts_boot_dev_sts1_reg = mmCPU_BOOT_DEV_STS1;
pre_fw_load->boot_err0_reg = mmCPU_BOOT_ERR0;
pre_fw_load->boot_err1_reg = mmCPU_BOOT_ERR1;
pre_fw_load->wait_for_preboot_timeout = GAUDI_BOOT_FIT_REQ_TIMEOUT_USEC;
}
static void gaudi_init_firmware_loader(struct hl_device *hdev)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
@ -9231,6 +9239,7 @@ static const struct hl_asic_funcs gaudi_funcs = {
.enable_events_from_fw = gaudi_enable_events_from_fw,
.ack_mmu_errors = gaudi_ack_mmu_page_fault_or_access_error,
.map_pll_idx_to_fw_idx = gaudi_map_pll_idx_to_fw_idx,
.init_firmware_preload_params = gaudi_init_firmware_preload_params,
.init_firmware_loader = gaudi_init_firmware_loader,
.init_cpu_scrambler_dram = gaudi_init_scrambler_hbm,
.state_dump_init = gaudi_state_dump_init,

19
drivers/misc/habanalabs/gaudi2/gaudi2.c
View File

@ -2531,11 +2531,7 @@ pci_init:
/* Before continuing in the initialization, we need to read the preboot
* version to determine whether we run with a security-enabled firmware
*/
rc = hl_fw_read_preboot_status(hdev, mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS,
mmCPU_BOOT_DEV_STS0,
mmCPU_BOOT_DEV_STS1, mmCPU_BOOT_ERR0,
mmCPU_BOOT_ERR1,
GAUDI2_PREBOOT_REQ_TIMEOUT_USEC);
rc = hl_fw_read_preboot_status(hdev);
if (rc) {
if (hdev->reset_on_preboot_fail)
hdev->asic_funcs->hw_fini(hdev, true, false);
@ -3832,6 +3828,18 @@ skip_engines:
gaudi2_sync_irqs(hdev);
}
static void gaudi2_init_firmware_preload_params(struct hl_device *hdev)
{
struct pre_fw_load_props *pre_fw_load = &hdev->fw_loader.pre_fw_load;
pre_fw_load->cpu_boot_status_reg = mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS;
pre_fw_load->sts_boot_dev_sts0_reg = mmCPU_BOOT_DEV_STS0;
pre_fw_load->sts_boot_dev_sts1_reg = mmCPU_BOOT_DEV_STS1;
pre_fw_load->boot_err0_reg = mmCPU_BOOT_ERR0;
pre_fw_load->boot_err1_reg = mmCPU_BOOT_ERR1;
pre_fw_load->wait_for_preboot_timeout = GAUDI2_PREBOOT_REQ_TIMEOUT_USEC;
}
static void gaudi2_init_firmware_loader(struct hl_device *hdev)
{
struct fw_load_mgr *fw_loader = &hdev->fw_loader;
@ -9762,6 +9770,7 @@ static const struct hl_asic_funcs gaudi2_funcs = {
.ack_mmu_errors = gaudi2_ack_mmu_page_fault_or_access_error,
.get_msi_info = gaudi2_get_msi_info,
.map_pll_idx_to_fw_idx = gaudi2_map_pll_idx_to_fw_idx,
.init_firmware_preload_params = gaudi2_init_firmware_preload_params,
.init_firmware_loader = gaudi2_init_firmware_loader,
.init_cpu_scrambler_dram = gaudi2_init_scrambler_hbm,
.state_dump_init = gaudi2_state_dump_init,

19
drivers/misc/habanalabs/goya/goya.c
View File

@ -665,11 +665,7 @@ pci_init:
/* Before continuing in the initialization, we need to read the preboot
* version to determine whether we run with a security-enabled firmware
*/
rc = hl_fw_read_preboot_status(hdev, mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS,
mmCPU_BOOT_DEV_STS0,
mmCPU_BOOT_DEV_STS1, mmCPU_BOOT_ERR0,
mmCPU_BOOT_ERR1,
GOYA_BOOT_FIT_REQ_TIMEOUT_USEC);
rc = hl_fw_read_preboot_status(hdev);
if (rc) {
if (hdev->reset_on_preboot_fail)
hdev->asic_funcs->hw_fini(hdev, true, false);
@ -2580,6 +2576,18 @@ static void goya_init_static_firmware_loader(struct hl_device *hdev)
static_loader->sram_offset_mask = ~(lower_32_bits(SRAM_BASE_ADDR));
}
static void goya_init_firmware_preload_params(struct hl_device *hdev)
{
struct pre_fw_load_props *pre_fw_load = &hdev->fw_loader.pre_fw_load;
pre_fw_load->cpu_boot_status_reg = mmPSOC_GLOBAL_CONF_CPU_BOOT_STATUS;
pre_fw_load->sts_boot_dev_sts0_reg = mmCPU_BOOT_DEV_STS0;
pre_fw_load->sts_boot_dev_sts1_reg = mmCPU_BOOT_DEV_STS1;
pre_fw_load->boot_err0_reg = mmCPU_BOOT_ERR0;
pre_fw_load->boot_err1_reg = mmCPU_BOOT_ERR1;
pre_fw_load->wait_for_preboot_timeout = GOYA_BOOT_FIT_REQ_TIMEOUT_USEC;
}
static void goya_init_firmware_loader(struct hl_device *hdev)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
@ -5510,6 +5518,7 @@ static const struct hl_asic_funcs goya_funcs = {
.enable_events_from_fw = goya_enable_events_from_fw,
.ack_mmu_errors = goya_ack_mmu_page_fault_or_access_error,
.map_pll_idx_to_fw_idx = goya_map_pll_idx_to_fw_idx,
.init_firmware_preload_params = goya_init_firmware_preload_params,
.init_firmware_loader = goya_init_firmware_loader,
.init_cpu_scrambler_dram = goya_cpu_init_scrambler_dram,
.state_dump_init = goya_state_dump_init,