diff options
| author | Oded Gabbay <ogabbay@kernel.org> | 2020-11-26 18:11:05 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2020-11-30 10:47:37 +0200 |
| commit | a63c3fb37b157b56d713a386dc024bf6deb9c7cf (patch) | |
| tree | 8ac258b1b1f2703a2997208d7b87d6abd09d1ebe /drivers/misc | |
| parent | ee3287798d49bbe5a9597d51ec914144179c03e8 (diff) | |
| download | linux-a63c3fb37b157b56d713a386dc024bf6deb9c7cf.tar.gz linux-a63c3fb37b157b56d713a386dc024bf6deb9c7cf.tar.bz2 linux-a63c3fb37b157b56d713a386dc024bf6deb9c7cf.zip | |
habanalabs/gaudi: handle reset when f/w is in preboot
Currently, if the f/w is in preboot/u-boot they don't perform the new
reset mechanism. Therefore, the driver needs to reset the device.
To prevent reset of PCI_IF, the driver needs to first configure the
reset units.
If the security is enabled, the driver can't configure the reset units.
In that situation, don't reset the card.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 60 |
1 files changed, 31 insertions, 29 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index cd18456fa523..568afe1b6849 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -3829,33 +3829,6 @@ static void gaudi_pre_hw_init(struct hl_device *hdev) * cleared by the H/W upon H/W reset */ WREG32(mmHW_STATE, HL_DEVICE_HW_STATE_DIRTY); - if (hdev->asic_prop.fw_security_disabled) { - /* Configure the reset registers. Must be done as early as - * possible in case we fail during H/W initialization - */ - WREG32(mmPSOC_GLOBAL_CONF_SOFT_RST_CFG_H, - (CFG_RST_H_DMA_MASK | - CFG_RST_H_MME_MASK | - CFG_RST_H_SM_MASK | - CFG_RST_H_TPC_7_MASK)); - - WREG32(mmPSOC_GLOBAL_CONF_SOFT_RST_CFG_L, CFG_RST_L_TPC_MASK); - - WREG32(mmPSOC_GLOBAL_CONF_SW_ALL_RST_CFG_H, - (CFG_RST_H_HBM_MASK | - CFG_RST_H_TPC_7_MASK | - CFG_RST_H_NIC_MASK | - CFG_RST_H_SM_MASK | - CFG_RST_H_DMA_MASK | - CFG_RST_H_MME_MASK | - CFG_RST_H_CPU_MASK | - CFG_RST_H_MMU_MASK)); - - WREG32(mmPSOC_GLOBAL_CONF_SW_ALL_RST_CFG_L, - (CFG_RST_L_IF_MASK | - CFG_RST_L_PSOC_MASK | - CFG_RST_L_TPC_MASK)); - } } static int gaudi_hw_init(struct hl_device *hdev) @@ -3946,7 +3919,8 @@ static void gaudi_hw_fini(struct hl_device *hdev, bool hard_reset) /* Set device to handle FLR by H/W as we will put the device CPU to * halt mode */ - if (!hdev->asic_prop.hard_reset_done_by_fw) + if (hdev->asic_prop.fw_security_disabled && + !hdev->asic_prop.hard_reset_done_by_fw) WREG32(mmPCIE_AUX_FLR_CTRL, (PCIE_AUX_FLR_CTRL_HW_CTRL_MASK | PCIE_AUX_FLR_CTRL_INT_MASK_MASK)); @@ -3957,7 +3931,35 @@ static void gaudi_hw_fini(struct hl_device *hdev, bool hard_reset) WREG32(mmGIC_DISTRIBUTOR__5_GICD_SETSPI_NSR, GAUDI_EVENT_HALT_MACHINE); - if (!hdev->asic_prop.hard_reset_done_by_fw) { + if (hdev->asic_prop.fw_security_disabled && + !hdev->asic_prop.hard_reset_done_by_fw) { + + /* Configure the reset registers. Must be done as early as + * possible in case we fail during H/W initialization + */ + WREG32(mmPSOC_GLOBAL_CONF_SOFT_RST_CFG_H, + (CFG_RST_H_DMA_MASK | + CFG_RST_H_MME_MASK | + CFG_RST_H_SM_MASK | + CFG_RST_H_TPC_7_MASK)); + + WREG32(mmPSOC_GLOBAL_CONF_SOFT_RST_CFG_L, CFG_RST_L_TPC_MASK); + + WREG32(mmPSOC_GLOBAL_CONF_SW_ALL_RST_CFG_H, + (CFG_RST_H_HBM_MASK | + CFG_RST_H_TPC_7_MASK | + CFG_RST_H_NIC_MASK | + CFG_RST_H_SM_MASK | + CFG_RST_H_DMA_MASK | + CFG_RST_H_MME_MASK | + CFG_RST_H_CPU_MASK | + CFG_RST_H_MMU_MASK)); + + WREG32(mmPSOC_GLOBAL_CONF_SW_ALL_RST_CFG_L, + (CFG_RST_L_IF_MASK | + CFG_RST_L_PSOC_MASK | + CFG_RST_L_TPC_MASK)); + msleep(cpu_timeout_ms); /* Tell ASIC not to re-initialize PCIe */ |