diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/eeh_pseries.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh_pseries.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 6643e0677e95..7c8434f902bc 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -56,6 +56,15 @@ static int ibm_get_config_addr_info2; static int ibm_configure_bridge; static int ibm_configure_pe; +/* + * Buffer for reporting slot-error-detail rtas calls. Its here + * in BSS, and not dynamically alloced, so that it ends up in + * RMO where RTAS can access it. + */ +static unsigned char slot_errbuf[RTAS_ERROR_LOG_MAX]; +static DEFINE_SPINLOCK(slot_errbuf_lock); +static int eeh_error_buf_size; + /** * pseries_eeh_init - EEH platform dependent initialization * @@ -107,6 +116,19 @@ static int pseries_eeh_init(void) return -EINVAL; } + /* Initialize error log lock and size */ + spin_lock_init(&slot_errbuf_lock); + eeh_error_buf_size = rtas_token("rtas-error-log-max"); + if (eeh_error_buf_size == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: unknown EEH error log size\n", + __func__); + eeh_error_buf_size = 1024; + } else if (eeh_error_buf_size > RTAS_ERROR_LOG_MAX) { + pr_warning("%s: EEH error log size %d exceeds the maximal %d\n", + __func__, eeh_error_buf_size, RTAS_ERROR_LOG_MAX); + eeh_error_buf_size = RTAS_ERROR_LOG_MAX; + } + return 0; } @@ -415,7 +437,30 @@ static int pseries_eeh_wait_state(struct device_node *dn, int max_wait) */ static int pseries_eeh_get_log(struct device_node *dn, int severity, char *drv_log, unsigned long len) { - return 0; + struct pci_dn *pdn; + int config_addr; + unsigned long flags; + int ret; + + pdn = PCI_DN(dn); + spin_lock_irqsave(&slot_errbuf_lock, flags); + memset(slot_errbuf, 0, eeh_error_buf_size); + + /* Figure out the PE address */ + config_addr = pdn->eeh_config_addr; + if (pdn->eeh_pe_config_addr) + config_addr = pdn->eeh_pe_config_addr; + + ret = rtas_call(ibm_slot_error_detail, 8, 1, NULL, config_addr, + BUID_HI(pdn->phb->buid), BUID_LO(pdn->phb->buid), + virt_to_phys(drv_log), len, + virt_to_phys(slot_errbuf), eeh_error_buf_size, + severity); + if (!ret) + log_error(slot_errbuf, ERR_TYPE_RTAS_LOG, 0); + spin_unlock_irqrestore(&slot_errbuf_lock, flags); + + return ret; } /** |
