diff options
| -rw-r--r-- | core/hmi.c | 87 |
1 files changed, 79 insertions, 8 deletions
@@ -19,6 +19,9 @@ #include <processor.h> #include <chiptod.h> #include <lock.h> +#include <xscom.h> +#include <capp.h> +#include <pci.h> /* * HMER register layout: @@ -143,6 +146,75 @@ static struct lock hmi_lock = LOCK_UNLOCKED; +static int is_capp_recoverable(int chip_id) +{ + uint64_t reg; + xscom_read(chip_id, CAPP_ERR_STATUS_CTRL, ®); + return (reg & PPC_BIT(0)) != 0; +} + +static void handle_capp_recoverable(int chip_id) +{ + struct dt_node *np; + u64 phb_id; + u32 dt_chip_id; + struct phb *phb; + u32 phb_index; + + dt_for_each_compatible(dt_root, np, "ibm,power8-pciex") { + dt_chip_id = dt_prop_get_u32(np, "ibm,chip-id"); + phb_index = dt_prop_get_u32(np, "ibm,phb-index"); + phb_id = dt_prop_get_u64(np, "ibm,opal-phbid"); + + if ((phb_index == 0) && (chip_id == dt_chip_id)) { + phb = pci_get_phb(phb_id); + phb->ops->lock(phb); + phb->ops->set_capp_recovery(phb); + phb->ops->unlock(phb); + } + } +} + +static int decode_one_malfunction(int flat_chip_id, struct OpalHMIEvent *hmi_evt) +{ + hmi_evt->severity = OpalHMI_SEV_FATAL; + hmi_evt->type = OpalHMI_ERROR_MALFUNC_ALERT; + + if (is_capp_recoverable(flat_chip_id)) { + handle_capp_recoverable(flat_chip_id); + + hmi_evt->severity = OpalHMI_SEV_NO_ERROR; + hmi_evt->type = OpalHMI_ERROR_CAPP_RECOVERY; + return 1; + } + /* TODO check other FIRs */ + return 0; +} + +static int decode_malfunction(struct OpalHMIEvent *hmi_evt) +{ + int i; + int node; + int chip; + int flat_chip_id; + int recover = -1; + uint64_t malf_alert; + + xscom_read(this_cpu()->chip_id, 0x2020011, &malf_alert); + + for (i = 0; i < 64; i++) { + if (malf_alert & PPC_BIT(i)) { + chip = i % 8; + node = i / 7; + flat_chip_id = chip * node; + recover = decode_one_malfunction(flat_chip_id, hmi_evt); + xscom_write(this_cpu()->chip_id, 0x02020011, ~PPC_BIT(i)); + } + } + + return recover; +} + int handle_hmi_exception(uint64_t hmer, struct OpalHMIEvent *hmi_evt) { int recover = 1; @@ -178,11 +250,9 @@ int handle_hmi_exception(uint64_t hmer, struct OpalHMIEvent *hmi_evt) /* Assert if we see malfunction alert, we can not continue. */ if (hmer & SPR_HMER_MALFUNCTION_ALERT) { hmer &= ~SPR_HMER_MALFUNCTION_ALERT; - if (hmi_evt) { - hmi_evt->severity = OpalHMI_SEV_FATAL; - hmi_evt->type = OpalHMI_ERROR_MALFUNC_ALERT; - } - recover = 0; + + if (hmi_evt) + recover = decode_malfunction(hmi_evt); } /* Assert if we see Hypervisor resource error, we can not continue. */ @@ -258,12 +328,13 @@ static int64_t opal_handle_hmi(void) recover = handle_hmi_exception(hmer, &hmi_evt); unlock(&hmi_lock); - if (recover) + if (recover == 1) hmi_evt.disposition = OpalHMI_DISPOSITION_RECOVERED; - else + else if (recover == 0) hmi_evt.disposition = OpalHMI_DISPOSITION_NOT_RECOVERED; - rc = queue_hmi_event(&hmi_evt); + if (recover != -1) + queue_hmi_event(&hmi_evt); return rc; } opal_call(OPAL_HANDLE_HMI, opal_handle_hmi, 0); |