On 01/11/2016 06:30 PM, Jubin John wrote:
> From: Vennila Megavannan <vennila.megavannan@xxxxxxxxx>
>
> Added the following per sdma engine stats:
> - SendDmaDescFetchedCnt
> - software maintained count of SDMA interrupts
> (SDmaInt, SDmaIdleInt, SDmaProgressInt)
> - software maintained counts of SDMA error cases
>
> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
> Signed-off-by: Vennila Megavannan <vennila.megavannan@xxxxxxxxx>
> Signed-off-by: Jubin John <jubin.john@xxxxxxxxx>
> ---
> Changes in v2:
> - None
>
> Changes in v3:
> - Refreshed patch against latest staging-next
>
> drivers/staging/rdma/hfi1/chip.c | 110 +++++++++++++++++++++++++++-
> drivers/staging/rdma/hfi1/chip.h | 5 +
> drivers/staging/rdma/hfi1/chip_registers.h | 1 +
> drivers/staging/rdma/hfi1/hfi.h | 1 +
> drivers/staging/rdma/hfi1/sdma.c | 9 ++-
> drivers/staging/rdma/hfi1/sdma.h | 7 ++
> 6 files changed, 129 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/rdma/hfi1/chip.c b/drivers/staging/rdma/hfi1/chip.c
> index 503bfca..f4f720d 100644
> --- a/drivers/staging/rdma/hfi1/chip.c
> +++ b/drivers/staging/rdma/hfi1/chip.c
> @@ -1297,10 +1297,58 @@ static u64 dev_access_u32_csr(const struct cntr_entry *entry,
> void *context, int vl, int mode, u64 data)
> {
> struct hfi1_devdata *dd = context;
> + u64 csr = entry->csr;
>
> - if (vl != CNTR_INVALID_VL)
> - return 0;
> - return read_write_csr(dd, entry->csr, mode, data);
> + if (entry->flags & CNTR_SDMA) {
> + if (vl == CNTR_INVALID_VL)
> + return 0;
> + csr += 0x100 * vl;
> + } else {
> + if (vl != CNTR_INVALID_VL)
> + return 0;
> + }
> + return read_write_csr(dd, csr, mode, data);
> +}
> +
> +static u64 access_sde_err_cnt(const struct cntr_entry *entry,
> + void *context, int idx, int mode, u64 data)
> +{
> + struct hfi1_devdata *dd = (struct hfi1_devdata *)context;
> +
> + if (dd->per_sdma && idx < dd->num_sdma)
> + return dd->per_sdma[idx].err_cnt;
> + return 0;
> +}
> +
> +static u64 access_sde_int_cnt(const struct cntr_entry *entry,
> + void *context, int idx, int mode, u64 data)
> +{
> + struct hfi1_devdata *dd = (struct hfi1_devdata *)context;
> +
> + if (dd->per_sdma && idx < dd->num_sdma)
> + return dd->per_sdma[idx].sdma_int_cnt;
> + return 0;
> +}
> +
> +static u64 access_sde_idle_int_cnt(const struct cntr_entry *entry,
> + void *context, int idx, int mode, u64 data)
> +{
> + struct hfi1_devdata *dd = (struct hfi1_devdata *)context;
> +
> + if (dd->per_sdma && idx < dd->num_sdma)
> + return dd->per_sdma[idx].idle_int_cnt;
> + return 0;
> +}
> +
> +static u64 access_sde_progress_int_cnt(const struct cntr_entry *entry,
> + void *context, int idx, int mode,
> + u64 data)
> +{
> + struct hfi1_devdata *dd = (struct hfi1_devdata *)context;
> +
> + if (dd->per_sdma && idx < dd->num_sdma)
> + return dd->per_sdma[idx].progress_int_cnt;
> + return 0;
> }
>
> static u64 dev_access_u64_csr(const struct cntr_entry *entry, void *context,
> @@ -4070,6 +4118,22 @@ static struct cntr_entry dev_cntrs[DEV_CNTR_LAST] = {
> access_sw_kmem_wait),
> [C_SW_SEND_SCHED] = CNTR_ELEM("SendSched", 0, 0, CNTR_NORMAL,
> access_sw_send_schedule),
> +[C_SDMA_DESC_FETCHED_CNT] = CNTR_ELEM("SDEDscFdCn",
> + SEND_DMA_DESC_FETCHED_CNT, 0,
> + CNTR_NORMAL | CNTR_32BIT | CNTR_SDMA,
> + dev_access_u32_csr),
> +[C_SDMA_INT_CNT] = CNTR_ELEM("SDMAInt", 0, 0,
> + CNTR_NORMAL | CNTR_32BIT | CNTR_SDMA,
> + access_sde_int_cnt),
> +[C_SDMA_ERR_CNT] = CNTR_ELEM("SDMAErrCt", 0, 0,
> + CNTR_NORMAL | CNTR_32BIT | CNTR_SDMA,
> + access_sde_err_cnt),
> +[C_SDMA_IDLE_INT_CNT] = CNTR_ELEM("SDMAIdInt", 0, 0,
> + CNTR_NORMAL | CNTR_32BIT | CNTR_SDMA,
> + access_sde_idle_int_cnt),
> +[C_SDMA_PROGRESS_INT_CNT] = CNTR_ELEM("SDMAPrIntCn", 0, 0,
> + CNTR_NORMAL | CNTR_32BIT | CNTR_SDMA,
> + access_sde_progress_int_cnt),
> /* MISC_ERR_STATUS */
> [C_MISC_PLL_LOCK_FAIL_ERR] = CNTR_ELEM("MISC_PLL_LOCK_FAIL_ERR", 0, 0,
> CNTR_NORMAL,
> @@ -5707,6 +5771,7 @@ static void handle_sdma_eng_err(struct hfi1_devdata *dd,
> dd_dev_err(sde->dd, "CONFIG SDMA(%u) source: %u status 0x%llx\n",
> sde->this_idx, source, (unsigned long long)status);
> #endif
> + sde->err_cnt++;
> sdma_engine_error(sde, status);
>
> /*
> @@ -11150,6 +11215,20 @@ u32 hfi1_read_cntrs(struct hfi1_devdata *dd, loff_t pos, char **namep,
> dd->cntrs[entry->offset + j] =
> val;
> }
> + } else if (entry->flags & CNTR_SDMA) {
> + hfi1_cdbg(CNTR,
> + "\t Per SDMA Engine\n");
> + for (j = 0; j < dd->chip_sdma_engines;
> + j++) {
> + val =
> + entry->rw_cntr(entry, dd, j,
> + CNTR_MODE_R, 0);
> + hfi1_cdbg(CNTR,
> + "\t\tRead 0x%llx for %d\n",
> + val, j);
> + dd->cntrs[entry->offset + j] =
> + val;
> + }
> } else {
> val = entry->rw_cntr(entry, dd,
> CNTR_INVALID_VL,
> @@ -11553,6 +11632,21 @@ static int init_cntrs(struct hfi1_devdata *dd)
> dd->ndevcntrs++;
> index++;
> }
> + } else if (dev_cntrs[i].flags & CNTR_SDMA) {
> + hfi1_dbg_early(
> + "\tProcessing per SDE counters chip enginers %u\n",
> + dd->chip_sdma_engines);
> + dev_cntrs[i].offset = index;
> + for (j = 0; j < dd->chip_sdma_engines; j++) {
> + memset(name, '\0', C_MAX_NAME);
> + snprintf(name, C_MAX_NAME, "%s%d",
> + dev_cntrs[i].name, j);
> + sz += strlen(name);
> + sz++;
> + hfi1_dbg_early("\t\t%s\n", name);
> + dd->ndevcntrs++;
> + index++;
> + }
> } else {
> /* +1 for newline */
> sz += strlen(dev_cntrs[i].name) + 1;
> @@ -11594,6 +11688,16 @@ static int init_cntrs(struct hfi1_devdata *dd)
> p += strlen(name);
> *p++ = '\n';
> }
> + } else if (dev_cntrs[i].flags & CNTR_SDMA) {
> + for (j = 0; j < TXE_NUM_SDMA_ENGINES;
> + j++) {
> + memset(name, '\0', C_MAX_NAME);
> + snprintf(name, C_MAX_NAME, "%s%d",
> + dev_cntrs[i].name, j);
> + memcpy(p, name, strlen(name));
> + p += strlen(name);
> + *p++ = '\n';
> + }
> } else {
> memcpy(p, dev_cntrs[i].name,
> strlen(dev_cntrs[i].name));
> diff --git a/drivers/staging/rdma/hfi1/chip.h b/drivers/staging/rdma/hfi1/chip.h
> index 1368a44..b46ef66 100644
> --- a/drivers/staging/rdma/hfi1/chip.h
> +++ b/drivers/staging/rdma/hfi1/chip.h
> @@ -787,6 +787,11 @@ enum {
> C_SW_PIO_WAIT,
> C_SW_KMEM_WAIT,
> C_SW_SEND_SCHED,
> + C_SDMA_DESC_FETCHED_CNT,
> + C_SDMA_INT_CNT,
> + C_SDMA_ERR_CNT,
> + C_SDMA_IDLE_INT_CNT,
> + C_SDMA_PROGRESS_INT_CNT,
> /* MISC_ERR_STATUS */
> C_MISC_PLL_LOCK_FAIL_ERR,
> C_MISC_MBIST_FAIL_ERR,
> diff --git a/drivers/staging/rdma/hfi1/chip_registers.h b/drivers/staging/rdma/hfi1/chip_registers.h
> index 701e9e1..fb36541 100644
> --- a/drivers/staging/rdma/hfi1/chip_registers.h
> +++ b/drivers/staging/rdma/hfi1/chip_registers.h
> @@ -1290,5 +1290,6 @@
> #define CCE_INT_BLOCKED (CCE + 0x000000110C00)
> #define SEND_DMA_IDLE_CNT (TXE + 0x000000200040)
> #define SEND_DMA_DESC_FETCHED_CNT (TXE + 0x000000200058)
> +#define CCE_MSIX_PBA_OFFSET 0X0110000
>
> #endif /* DEF_CHIP_REG */
> diff --git a/drivers/staging/rdma/hfi1/hfi.h b/drivers/staging/rdma/hfi1/hfi.h
> index d4a859f..d32ee84 100644
> --- a/drivers/staging/rdma/hfi1/hfi.h
> +++ b/drivers/staging/rdma/hfi1/hfi.h
> @@ -490,6 +490,7 @@ struct hfi1_sge_state;
> #define CNTR_DISABLED 0x2 /* Disable this counter */
> #define CNTR_32BIT 0x4 /* Simulate 64 bits for this counter */
> #define CNTR_VL 0x8 /* Per VL counter */
> +#define CNTR_SDMA 0x10
> #define CNTR_INVALID_VL -1 /* Specifies invalid VL */
> #define CNTR_MODE_W 0x0
> #define CNTR_MODE_R 0x1
> diff --git a/drivers/staging/rdma/hfi1/sdma.c b/drivers/staging/rdma/hfi1/sdma.c
> index 1d38be5..cb66bd0 100644
> --- a/drivers/staging/rdma/hfi1/sdma.c
> +++ b/drivers/staging/rdma/hfi1/sdma.c
> @@ -1061,7 +1061,6 @@ int sdma_init(struct hfi1_devdata *dd, u8 port)
> sde->desc_avail = sdma_descq_freecnt(sde);
> sde->sdma_shift = ilog2(descq_cnt);
> sde->sdma_mask = (1 << sde->sdma_shift) - 1;
> - sde->descq_full_count = 0;
>
> /* Create a mask for all 3 chip interrupt sources */
> sde->imask = (u64)1 << (0*TXE_NUM_SDMA_ENGINES + this_idx)
> @@ -1073,6 +1072,8 @@ int sdma_init(struct hfi1_devdata *dd, u8 port)
> /* Create a mask specifically for sdma_progress */
> sde->progress_mask =
> (u64)1 << (TXE_NUM_SDMA_ENGINES + this_idx);
> + sde->int_mask =
> + (u64)1 << (0 * TXE_NUM_SDMA_ENGINES + this_idx);
^^^^^^^^^^^^^^^^^^^^^^^^
Why is that there?
> spin_lock_init(&sde->tail_lock);
> seqlock_init(&sde->head_lock);
> spin_lock_init(&sde->senddmactrl_lock);
> @@ -1552,6 +1553,12 @@ void sdma_engine_interrupt(struct sdma_engine *sde, u64 status)
> trace_hfi1_sdma_engine_interrupt(sde, status);
> write_seqlock(&sde->head_lock);
> sdma_set_desc_cnt(sde, sdma_desct_intr);
> + if (status & sde->idle_mask)
> + sde->idle_int_cnt++;
> + else if (status & sde->progress_mask)
> + sde->progress_int_cnt++;
> + else if (status & sde->int_mask)
> + sde->sdma_int_cnt++;
> sdma_make_progress(sde, status);
> write_sequnlock(&sde->head_lock);
> }
> diff --git a/drivers/staging/rdma/hfi1/sdma.h b/drivers/staging/rdma/hfi1/sdma.h
> index da89e64..757017a 100644
> --- a/drivers/staging/rdma/hfi1/sdma.h
> +++ b/drivers/staging/rdma/hfi1/sdma.h
> @@ -409,6 +409,7 @@ struct sdma_engine {
> u64 imask; /* clear interrupt mask */
> u64 idle_mask;
> u64 progress_mask;
> + u64 int_mask;
> /* private: */
> volatile __le64 *head_dma; /* DMA'ed by chip */
> /* private: */
> @@ -465,6 +466,12 @@ struct sdma_engine {
> u16 tx_head;
> /* private: */
> u64 last_status;
> + /* private */
> + u64 err_cnt;
> + /* private */
> + u64 sdma_int_cnt;
> + u64 idle_int_cnt;
> + u64 progress_int_cnt;
>
> /* private: */
> struct list_head dmawait;
>
--
Doug Ledford <dledford@xxxxxxxxxx>
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