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accel/habanalabs: move soft-reset wait to soft-reset execute 

We plan to do soft-reset either by mmio or by using cpucp packet
depending on the FW version. We don't want to check FW version in two
different places for that (execute soft-reset and wait to soft-reset)
so move the waiting to gaudi2_execute_soft_reset. This also makes sense
because the cpucp also does the waiting.

Signed-off-by: Dafna Hirschfeld <dhirschfeld@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Dafna Hirschfeld 2023-02-20 07:54:44 +02:00 committed by Oded Gabbay
parent f7f0085eec
commit 801507d3b3
1 changed files with 26 additions and 24 deletions
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50
drivers/accel/habanalabs/gaudi2/gaudi2.c
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@ -6068,17 +6068,37 @@ static void gaudi2_execute_hard_reset(struct hl_device *hdev, u32 reset_sleep_ms
WREG32(mmPSOC_RESET_CONF_SW_ALL_RST, 1);
}
static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll_timeout_us)
{
int i, rc = 0;
u32 reg_val;
for (i = 0 ; i < GAUDI2_RESET_POLL_CNT ; i++)
rc = hl_poll_timeout(
hdev,
mmCPU_RST_STATUS_TO_HOST,
reg_val,
reg_val == CPU_RST_STATUS_SOFT_RST_DONE,
1000,
poll_timeout_us);
if (rc)
dev_err(hdev->dev, "Timeout while waiting for FW to complete soft reset (0x%x)\n",
reg_val);
}
/**
* gaudi2_execute_soft_reset - execute soft reset by driver/FW
*
* @hdev: pointer to the habanalabs device structure
* @reset_sleep_ms: sleep time in msec after reset
* @driver_performs_reset: true if driver should perform reset instead of f/w.
* @poll_timeout_us: time to wait for response from f/w.
*
* This function executes soft reset based on if driver/FW should do the reset
*/
static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms,
bool driver_performs_reset)
bool driver_performs_reset, u32 poll_timeout_us)
{
struct cpu_dyn_regs *dyn_regs = &hdev->fw_loader.dynamic_loader.comm_desc.cpu_dyn_regs;
@ -6091,6 +6111,7 @@ static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms
WREG32(le32_to_cpu(dyn_regs->gic_host_soft_rst_irq),
gaudi2_irq_map_table[GAUDI2_EVENT_CPU_SOFT_RESET].cpu_id);
gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us);
return;
}
@ -6133,25 +6154,6 @@ static void gaudi2_poll_btm_indication(struct hl_device *hdev, u32 reset_sleep_m
dev_err(hdev->dev, "Timeout while waiting for device to reset 0x%x\n", reg_val);
}
static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll_timeout_us)
{
int i, rc = 0;
u32 reg_val;
for (i = 0 ; i < GAUDI2_RESET_POLL_CNT ; i++)
rc = hl_poll_timeout(
hdev,
mmCPU_RST_STATUS_TO_HOST,
reg_val,
reg_val == CPU_RST_STATUS_SOFT_RST_DONE,
1000,
poll_timeout_us);
if (rc)
dev_err(hdev->dev, "Timeout while waiting for FW to complete soft reset (0x%x)\n",
reg_val);
}
static int gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
{
struct gaudi2_device *gaudi2 = hdev->asic_specific;
@ -6184,11 +6186,12 @@ static int gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset
*/
driver_performs_reset = (hdev->fw_components == FW_TYPE_PREBOOT_CPU &&
!hdev->asic_prop.fw_security_enabled);
gaudi2_execute_soft_reset(hdev, reset_sleep_ms, driver_performs_reset);
gaudi2_execute_soft_reset(hdev, reset_sleep_ms, driver_performs_reset,
poll_timeout_us);
}
skip_reset:
if (driver_performs_reset || hard_reset)
if (driver_performs_reset || hard_reset) {
/*
* Instead of waiting for BTM indication we should wait for preboot ready:
* Consider the below scenario:
@ -6214,8 +6217,7 @@ skip_reset:
} else {
gaudi2_poll_btm_indication(hdev, reset_sleep_ms, poll_timeout_us);
}
else
gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us);
}
if (!gaudi2)
return 0;