diff options
Diffstat (limited to 'drivers/message/fusion/mptbase.c')
| -rw-r--r-- | drivers/message/fusion/mptbase.c | 63 |
1 files changed, 62 insertions, 1 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 7956a10f9488..517621fa8bca 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -63,6 +63,8 @@ #ifdef CONFIG_MTRR #include <asm/mtrr.h> #endif +#include <linux/kthread.h> +#include <scsi/scsi_host.h> #include "mptbase.h" #include "lsi/mpi_log_fc.h" @@ -323,6 +325,32 @@ mpt_is_discovery_complete(MPT_ADAPTER *ioc) return rc; } + +/** + * mpt_remove_dead_ioc_func - kthread context to remove dead ioc + * @arg: input argument, used to derive ioc + * + * Return 0 if controller is removed from pci subsystem. + * Return -1 for other case. + */ +static int mpt_remove_dead_ioc_func(void *arg) +{ + MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg; + struct pci_dev *pdev; + + if ((ioc == NULL)) + return -1; + + pdev = ioc->pcidev; + if ((pdev == NULL)) + return -1; + + pci_remove_bus_device(pdev); + return 0; +} + + + /** * mpt_fault_reset_work - work performed on workq after ioc fault * @work: input argument, used to derive ioc @@ -336,12 +364,45 @@ mpt_fault_reset_work(struct work_struct *work) u32 ioc_raw_state; int rc; unsigned long flags; + MPT_SCSI_HOST *hd; + struct task_struct *p; if (ioc->ioc_reset_in_progress || !ioc->active) goto out; + ioc_raw_state = mpt_GetIocState(ioc, 0); - if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT) { + if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_MASK) { + printk(MYIOC_s_INFO_FMT "%s: IOC is non-operational !!!!\n", + ioc->name, __func__); + + /* + * Call mptscsih_flush_pending_cmds callback so that we + * flush all pending commands back to OS. + * This call is required to aovid deadlock at block layer. + * Dead IOC will fail to do diag reset,and this call is safe + * since dead ioc will never return any command back from HW. + */ + hd = shost_priv(ioc->sh); + ioc->schedule_dead_ioc_flush_running_cmds(hd); + + /*Remove the Dead Host */ + p = kthread_run(mpt_remove_dead_ioc_func, ioc, + "mpt_dead_ioc_%d", ioc->id); + if (IS_ERR(p)) { + printk(MYIOC_s_ERR_FMT + "%s: Running mpt_dead_ioc thread failed !\n", + ioc->name, __func__); + } else { + printk(MYIOC_s_WARN_FMT + "%s: Running mpt_dead_ioc thread success !\n", + ioc->name, __func__); + } + return; /* don't rearm timer */ + } + + if ((ioc_raw_state & MPI_IOC_STATE_MASK) + == MPI_IOC_STATE_FAULT) { printk(MYIOC_s_WARN_FMT "IOC is in FAULT state (%04xh)!!!\n", ioc->name, ioc_raw_state & MPI_DOORBELL_DATA_MASK); printk(MYIOC_s_WARN_FMT "Issuing HardReset from %s!!\n", |