From 6c719cae0b91f577738dfb4007baee28f03e48a5 Mon Sep 17 00:00:00 2001 From: Ralph Campbell Date: Sun, 6 Jan 2008 21:02:33 -0800 Subject: [PATCH] IB/ipath: MAD performance sampling registers support Add support for QLogic HCAs which have hardware performance sampling registers for PortSamplesControl and PortSamplesResult MADs. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_kernel.h | 9 ++ drivers/infiniband/hw/ipath/ipath_mad.c | 119 +++++++++++------- drivers/infiniband/hw/ipath/ipath_registers.h | 14 +++ drivers/infiniband/hw/ipath/ipath_verbs.c | 1 + drivers/infiniband/hw/ipath/ipath_verbs.h | 2 + 5 files changed, 101 insertions(+), 44 deletions(-) diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 7bb0d08820d8..a59c06943de6 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -930,6 +930,15 @@ static inline u32 ipath_read_creg32(const struct ipath_devdata *dd, (char __iomem *)dd->ipath_kregbase)); } +static inline void ipath_write_creg(const struct ipath_devdata *dd, + ipath_creg regno, u64 value) +{ + if (dd->ipath_kregbase) + writeq(value, regno + (u64 __iomem *) + (dd->ipath_cregbase + + (char __iomem *)dd->ipath_kregbase)); +} + static inline void ipath_clear_rcvhdrtail(const struct ipath_portdata *pd) { *((u64 *) pd->port_rcvhdrtail_kvaddr) = 0ULL; diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c index 1978c346b5c5..d98d5f103700 100644 --- a/drivers/infiniband/hw/ipath/ipath_mad.c +++ b/drivers/infiniband/hw/ipath/ipath_mad.c @@ -934,6 +934,7 @@ static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp, struct ib_pma_portsamplescontrol *p = (struct ib_pma_portsamplescontrol *)pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; unsigned long flags; u8 port_select = p->port_select; @@ -955,7 +956,10 @@ static int recv_pma_get_portsamplescontrol(struct ib_perf *pmp, p->counter_width = 4; /* 32 bit counters */ p->counter_mask0_9 = COUNTER_MASK0_9; spin_lock_irqsave(&dev->pending_lock, flags); - p->sample_status = dev->pma_sample_status; + if (crp->cr_psstat) + p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + p->sample_status = dev->pma_sample_status; p->sample_start = cpu_to_be32(dev->pma_sample_start); p->sample_interval = cpu_to_be32(dev->pma_sample_interval); p->tag = cpu_to_be16(dev->pma_tag); @@ -975,8 +979,9 @@ static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp, struct ib_pma_portsamplescontrol *p = (struct ib_pma_portsamplescontrol *)pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; unsigned long flags; - u32 start; + u8 status; int ret; if (pmp->attr_mod != 0 || @@ -986,59 +991,67 @@ static int recv_pma_set_portsamplescontrol(struct ib_perf *pmp, goto bail; } - start = be32_to_cpu(p->sample_start); - if (start != 0) { - spin_lock_irqsave(&dev->pending_lock, flags); - if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_DONE) { - dev->pma_sample_status = - IB_PMA_SAMPLE_STATUS_STARTED; - dev->pma_sample_start = start; - dev->pma_sample_interval = - be32_to_cpu(p->sample_interval); - dev->pma_tag = be16_to_cpu(p->tag); - if (p->counter_select[0]) - dev->pma_counter_select[0] = - p->counter_select[0]; - if (p->counter_select[1]) - dev->pma_counter_select[1] = - p->counter_select[1]; - if (p->counter_select[2]) - dev->pma_counter_select[2] = - p->counter_select[2]; - if (p->counter_select[3]) - dev->pma_counter_select[3] = - p->counter_select[3]; - if (p->counter_select[4]) - dev->pma_counter_select[4] = - p->counter_select[4]; - } - spin_unlock_irqrestore(&dev->pending_lock, flags); + spin_lock_irqsave(&dev->pending_lock, flags); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + if (status == IB_PMA_SAMPLE_STATUS_DONE) { + dev->pma_sample_start = be32_to_cpu(p->sample_start); + dev->pma_sample_interval = be32_to_cpu(p->sample_interval); + dev->pma_tag = be16_to_cpu(p->tag); + dev->pma_counter_select[0] = p->counter_select[0]; + dev->pma_counter_select[1] = p->counter_select[1]; + dev->pma_counter_select[2] = p->counter_select[2]; + dev->pma_counter_select[3] = p->counter_select[3]; + dev->pma_counter_select[4] = p->counter_select[4]; + if (crp->cr_psstat) { + ipath_write_creg(dev->dd, crp->cr_psinterval, + dev->pma_sample_interval); + ipath_write_creg(dev->dd, crp->cr_psstart, + dev->pma_sample_start); + } else + dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED; } + spin_unlock_irqrestore(&dev->pending_lock, flags); + ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port); bail: return ret; } -static u64 get_counter(struct ipath_ibdev *dev, __be16 sel) +static u64 get_counter(struct ipath_ibdev *dev, + struct ipath_cregs const *crp, + __be16 sel) { u64 ret; switch (sel) { case IB_PMA_PORT_XMIT_DATA: - ret = dev->ipath_sword; + ret = (crp->cr_psxmitdatacount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) : + dev->ipath_sword; break; case IB_PMA_PORT_RCV_DATA: - ret = dev->ipath_rword; + ret = (crp->cr_psrcvdatacount) ? + ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) : + dev->ipath_rword; break; case IB_PMA_PORT_XMIT_PKTS: - ret = dev->ipath_spkts; + ret = (crp->cr_psxmitpktscount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) : + dev->ipath_spkts; break; case IB_PMA_PORT_RCV_PKTS: - ret = dev->ipath_rpkts; + ret = (crp->cr_psrcvpktscount) ? + ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) : + dev->ipath_rpkts; break; case IB_PMA_PORT_XMIT_WAIT: - ret = dev->ipath_xmit_wait; + ret = (crp->cr_psxmitwaitcount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) : + dev->ipath_xmit_wait; break; default: ret = 0; @@ -1053,14 +1066,21 @@ static int recv_pma_get_portsamplesresult(struct ib_perf *pmp, struct ib_pma_portsamplesresult *p = (struct ib_pma_portsamplesresult *)pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + u8 status; int i; memset(pmp->data, 0, sizeof(pmp->data)); p->tag = cpu_to_be16(dev->pma_tag); - p->sample_status = cpu_to_be16(dev->pma_sample_status); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + p->sample_status = cpu_to_be16(status); for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) - p->counter[i] = cpu_to_be32( - get_counter(dev, dev->pma_counter_select[i])); + p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : + cpu_to_be32( + get_counter(dev, crp, dev->pma_counter_select[i])); return reply((struct ib_smp *) pmp); } @@ -1071,16 +1091,23 @@ static int recv_pma_get_portsamplesresult_ext(struct ib_perf *pmp, struct ib_pma_portsamplesresult_ext *p = (struct ib_pma_portsamplesresult_ext *)pmp->data; struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + u8 status; int i; memset(pmp->data, 0, sizeof(pmp->data)); p->tag = cpu_to_be16(dev->pma_tag); - p->sample_status = cpu_to_be16(dev->pma_sample_status); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + p->sample_status = cpu_to_be16(status); /* 64 bits */ p->extended_width = __constant_cpu_to_be32(0x80000000); for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) - p->counter[i] = cpu_to_be64( - get_counter(dev, dev->pma_counter_select[i])); + p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : + cpu_to_be64( + get_counter(dev, crp, dev->pma_counter_select[i])); return reply((struct ib_smp *) pmp); } @@ -1113,6 +1140,8 @@ static int recv_pma_get_portcounters(struct ib_perf *pmp, dev->z_local_link_integrity_errors; cntrs.excessive_buffer_overrun_errors -= dev->z_excessive_buffer_overrun_errors; + cntrs.vl15_dropped -= dev->z_vl15_dropped; + cntrs.vl15_dropped += dev->n_vl15_dropped; memset(pmp->data, 0, sizeof(pmp->data)); @@ -1156,10 +1185,10 @@ static int recv_pma_get_portcounters(struct ib_perf *pmp, cntrs.excessive_buffer_overrun_errors = 0xFUL; p->lli_ebor_errors = (cntrs.local_link_integrity_errors << 4) | cntrs.excessive_buffer_overrun_errors; - if (dev->n_vl15_dropped > 0xFFFFUL) + if (cntrs.vl15_dropped > 0xFFFFUL) p->vl15_dropped = __constant_cpu_to_be16(0xFFFF); else - p->vl15_dropped = cpu_to_be16((u16)dev->n_vl15_dropped); + p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); if (cntrs.port_xmit_data > 0xFFFFFFFFUL) p->port_xmit_data = __constant_cpu_to_be32(0xFFFFFFFF); else @@ -1262,8 +1291,10 @@ static int recv_pma_set_portcounters(struct ib_perf *pmp, dev->z_excessive_buffer_overrun_errors = cntrs.excessive_buffer_overrun_errors; - if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) + if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { dev->n_vl15_dropped = 0; + dev->z_vl15_dropped = cntrs.vl15_dropped; + } if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) dev->z_port_xmit_data = cntrs.port_xmit_data; diff --git a/drivers/infiniband/hw/ipath/ipath_registers.h b/drivers/infiniband/hw/ipath/ipath_registers.h index d7181d444ed7..156ef1473466 100644 --- a/drivers/infiniband/hw/ipath/ipath_registers.h +++ b/drivers/infiniband/hw/ipath/ipath_registers.h @@ -469,6 +469,20 @@ struct ipath_cregs { ipath_creg cr_unsupvlcnt; ipath_creg cr_wordrcvcnt; ipath_creg cr_wordsendcnt; + ipath_creg cr_vl15droppedpktcnt; + ipath_creg cr_rxotherlocalphyerrcnt; + ipath_creg cr_excessbufferovflcnt; + ipath_creg cr_locallinkintegrityerrcnt; + ipath_creg cr_rxvlerrcnt; + ipath_creg cr_rxdlidfltrcnt; + ipath_creg cr_psstat; + ipath_creg cr_psstart; + ipath_creg cr_psinterval; + ipath_creg cr_psrcvdatacount; + ipath_creg cr_psrcvpktscount; + ipath_creg cr_psxmitdatacount; + ipath_creg cr_psxmitpktscount; + ipath_creg cr_psxmitwaitcount; }; #endif /* _IPATH_REGISTERS_H */ diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index c4c998446c7b..a2baa618daf2 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -1641,6 +1641,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd) cntrs.local_link_integrity_errors; idev->z_excessive_buffer_overrun_errors = cntrs.excessive_buffer_overrun_errors; + idev->z_vl15_dropped = cntrs.vl15_dropped; /* * The system image GUID is supposed to be the same for all diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index 6ccb54f104a3..1c8985012743 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -554,6 +554,7 @@ struct ipath_ibdev { u32 z_pkey_violations; /* starting count for PMA */ u32 z_local_link_integrity_errors; /* starting count for PMA */ u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ + u32 z_vl15_dropped; /* starting count for PMA */ u32 n_rc_resends; u32 n_rc_acks; u32 n_rc_qacks; @@ -598,6 +599,7 @@ struct ipath_verbs_counters { u64 port_rcv_packets; u32 local_link_integrity_errors; u32 excessive_buffer_overrun_errors; + u32 vl15_dropped; }; static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) -- 2.20.1