diff options
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index f1dead369258..09132582e09c 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -1609,6 +1609,154 @@ static void hfi1_get_dev_fw_str(struct ib_device *ibdev, char *str, dc8051_ver_min(ver)); } +static const char * const driver_cntr_names[] = { + /* must be element 0*/ + "DRIVER_KernIntr", + "DRIVER_ErrorIntr", + "DRIVER_Tx_Errs", + "DRIVER_Rcv_Errs", + "DRIVER_HW_Errs", + "DRIVER_NoPIOBufs", + "DRIVER_CtxtsOpen", + "DRIVER_RcvLen_Errs", + "DRIVER_EgrBufFull", + "DRIVER_EgrHdrFull" +}; + +static const char **dev_cntr_names; +static const char **port_cntr_names; +static int num_driver_cntrs = ARRAY_SIZE(driver_cntr_names); +static int num_dev_cntrs; +static int num_port_cntrs; +static int cntr_names_initialized; + +/* + * Convert a list of names separated by '\n' into an array of NULL terminated + * strings. Optionally some entries can be reserved in the array to hold extra + * external strings. + */ +static int init_cntr_names(const char *names_in, + const int names_len, + int num_extra_names, + int *num_cntrs, + const char ***cntr_names) +{ + char *names_out, *p, **q; + int i, n; + + n = 0; + for (i = 0; i < names_len; i++) + if (names_in[i] == '\n') + n++; + + names_out = kmalloc((n + num_extra_names) * sizeof(char *) + names_len, + GFP_KERNEL); + if (!names_out) { + *num_cntrs = 0; + *cntr_names = NULL; + return -ENOMEM; + } + + p = names_out + (n + num_extra_names) * sizeof(char *); + memcpy(p, names_in, names_len); + + q = (char **)names_out; + for (i = 0; i < n; i++) { + q[i] = p; + p = strchr(p, '\n'); + *p++ = '\0'; + } + + *num_cntrs = n; + *cntr_names = (const char **)names_out; + return 0; +} + +static struct rdma_hw_stats *alloc_hw_stats(struct ib_device *ibdev, + u8 port_num) +{ + int i, err; + + if (!cntr_names_initialized) { + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + + err = init_cntr_names(dd->cntrnames, + dd->cntrnameslen, + num_driver_cntrs, + &num_dev_cntrs, + &dev_cntr_names); + if (err) + return NULL; + + for (i = 0; i < num_driver_cntrs; i++) + dev_cntr_names[num_dev_cntrs + i] = + driver_cntr_names[i]; + + err = init_cntr_names(dd->portcntrnames, + dd->portcntrnameslen, + 0, + &num_port_cntrs, + &port_cntr_names); + if (err) { + kfree(dev_cntr_names); + dev_cntr_names = NULL; + return NULL; + } + cntr_names_initialized = 1; + } + + if (!port_num) + return rdma_alloc_hw_stats_struct( + dev_cntr_names, + num_dev_cntrs + num_driver_cntrs, + RDMA_HW_STATS_DEFAULT_LIFESPAN); + else + return rdma_alloc_hw_stats_struct( + port_cntr_names, + num_port_cntrs, + RDMA_HW_STATS_DEFAULT_LIFESPAN); +} + +static u64 hfi1_sps_ints(void) +{ + unsigned long flags; + struct hfi1_devdata *dd; + u64 sps_ints = 0; + + spin_lock_irqsave(&hfi1_devs_lock, flags); + list_for_each_entry(dd, &hfi1_dev_list, list) { + sps_ints += get_all_cpu_total(dd->int_counter); + } + spin_unlock_irqrestore(&hfi1_devs_lock, flags); + return sps_ints; +} + +static int get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, + u8 port, int index) +{ + u64 *values; + int count; + + if (!port) { + u64 *stats = (u64 *)&hfi1_stats; + int i; + + hfi1_read_cntrs(dd_from_ibdev(ibdev), NULL, &values); + values[num_dev_cntrs] = hfi1_sps_ints(); + for (i = 1; i < num_driver_cntrs; i++) + values[num_dev_cntrs + i] = stats[i]; + count = num_dev_cntrs + num_driver_cntrs; + } else { + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + hfi1_read_portcntrs(ppd_from_ibp(ibp), NULL, &values); + count = num_port_cntrs; + } + + memcpy(stats->value, values, count * sizeof(u64)); + return count; +} + /** * hfi1_register_ib_device - register our device with the infiniband core * @dd: the device data structure @@ -1656,6 +1804,8 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd) ibdev->phys_port_cnt = dd->num_pports; ibdev->dma_device = &dd->pcidev->dev; ibdev->modify_device = modify_device; + ibdev->alloc_hw_stats = alloc_hw_stats; + ibdev->get_hw_stats = get_hw_stats; /* keep process mad in the driver */ ibdev->process_mad = hfi1_process_mad; @@ -1770,6 +1920,10 @@ void hfi1_unregister_ib_device(struct hfi1_devdata *dd) del_timer_sync(&dev->mem_timer); verbs_txreq_exit(dev); + + kfree(dev_cntr_names); + kfree(port_cntr_names); + cntr_names_initialized = 0; } void hfi1_cnp_rcv(struct hfi1_packet *packet) |