diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 1d64524cd863..712f7f1cb219 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -5618,6 +5618,23 @@ _base_wait_on_iocstate(struct MPT3SAS_ADAPTER *ioc, u32 ioc_state, int timeout) return current_state; } +/** + * _base_dump_reg_set - This function will print hexdump of register set. + * @ioc: per adapter object + * + * Returns nothing. + */ +static inline void +_base_dump_reg_set(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned int i, sz = 256; + u32 __iomem *reg = (u32 __iomem *)ioc->chip; + + ioc_info(ioc, "System Register set:\n"); + for (i = 0; i < (sz / sizeof(u32)); i++) + pr_info("%08x: %08x\n", (i * 4), readl(®[i])); +} + /** * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by * a write to the doorbell) @@ -6797,6 +6814,7 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) if (count++ > 20) { ioc_info(ioc, "Stop writing magic sequence after 20 retries\n"); + _base_dump_reg_set(ioc); goto out; } @@ -6825,6 +6843,7 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) if (host_diagnostic == 0xFFFFFFFF) { ioc_info(ioc, "Invalid host diagnostic register value\n"); + _base_dump_reg_set(ioc); goto out; } if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER)) @@ -6859,6 +6878,7 @@ _base_diag_reset(struct MPT3SAS_ADAPTER *ioc) if (ioc_state) { ioc_err(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n", __func__, ioc_state); + _base_dump_reg_set(ioc); goto out; }