diff options
| author | Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> | 2017-06-09 11:12:35 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-09 13:12:23 -0400 |
| commit | d86cc04e22ead660eeb362b28119c7cb1fbd9d06 (patch) | |
| tree | 3b2759d8935bf4c9014d8438f831784b8fb373d7 /drivers | |
| parent | 9438d27a9b7be75dc81e7fde4b2d0292a15f981a (diff) | |
| download | linux-d86cc04e22ead660eeb362b28119c7cb1fbd9d06.tar.bz2 | |
cxgb4: handle interrupt raised when FW crashes
Handle TIMER0INT when FW crashes. Check for PCIE_FW[FW_EVAL]
and if it says "Device FW Crashed", then treat it as fatal.
Else, non-fatal.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 19 | ||||
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h | 4 |
3 files changed, 26 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index da1322da4925..16af646a7fe4 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -4040,6 +4040,7 @@ static void cim_intr_handler(struct adapter *adapter) { MBHOSTPARERR_F, "CIM mailbox host parity error", -1, 1 }, { TIEQINPARERRINT_F, "CIM TIEQ outgoing parity error", -1, 1 }, { TIEQOUTPARERRINT_F, "CIM TIEQ incoming parity error", -1, 1 }, + { TIMER0INT_F, "CIM TIMER0 interrupt", -1, 1 }, { 0 } }; static const struct intr_info cim_upintr_info[] = { @@ -4074,11 +4075,27 @@ static void cim_intr_handler(struct adapter *adapter) { 0 } }; + u32 val, fw_err; int fat; - if (t4_read_reg(adapter, PCIE_FW_A) & PCIE_FW_ERR_F) + fw_err = t4_read_reg(adapter, PCIE_FW_A); + if (fw_err & PCIE_FW_ERR_F) t4_report_fw_error(adapter); + /* When the Firmware detects an internal error which normally + * wouldn't raise a Host Interrupt, it forces a CIM Timer0 interrupt + * in order to make sure the Host sees the Firmware Crash. So + * if we have a Timer0 interrupt and don't see a Firmware Crash, + * ignore the Timer0 interrupt. + */ + + val = t4_read_reg(adapter, CIM_HOST_INT_CAUSE_A); + if (val & TIMER0INT_F) + if (!(fw_err & PCIE_FW_ERR_F) || + (PCIE_FW_EVAL_G(fw_err) != PCIE_FW_EVAL_CRASH)) + t4_write_reg(adapter, CIM_HOST_INT_CAUSE_A, + TIMER0INT_F); + fat = t4_handle_intr_status(adapter, CIM_HOST_INT_CAUSE_A, cim_intr_info) + t4_handle_intr_status(adapter, CIM_HOST_UPACC_INT_CAUSE_A, diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h index 3348d33c36fa..3884336ce23c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h @@ -1077,6 +1077,10 @@ #define TIEQINPARERRINT_V(x) ((x) << TIEQINPARERRINT_S) #define TIEQINPARERRINT_F TIEQINPARERRINT_V(1U) +#define TIMER0INT_S 2 +#define TIMER0INT_V(x) ((x) << TIMER0INT_S) +#define TIMER0INT_F TIMER0INT_V(1U) + #define PREFDROPINT_S 1 #define PREFDROPINT_V(x) ((x) << PREFDROPINT_S) #define PREFDROPINT_F PREFDROPINT_V(1U) diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h index c65c33c03bcb..f47461aa658b 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h @@ -3088,6 +3088,10 @@ struct fw_debug_cmd { #define FW_DEBUG_CMD_TYPE_G(x) \ (((x) >> FW_DEBUG_CMD_TYPE_S) & FW_DEBUG_CMD_TYPE_M) +enum pcie_fw_eval { + PCIE_FW_EVAL_CRASH = 0, +}; + #define PCIE_FW_ERR_S 31 #define PCIE_FW_ERR_V(x) ((x) << PCIE_FW_ERR_S) #define PCIE_FW_ERR_F PCIE_FW_ERR_V(1U) |