diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_mad.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_mad.c | 2449 |
1 files changed, 2449 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c new file mode 100644 index 000000000..ef02f2bfd --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_mad.c @@ -0,0 +1,2449 @@ +/* + * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. + * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <rdma/ib_smi.h> + +#include "qib.h" +#include "qib_mad.h" + +static int reply(struct ib_smp *smp) +{ + /* + * The verbs framework will handle the directed/LID route + * packet changes. + */ + smp->method = IB_MGMT_METHOD_GET_RESP; + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + smp->status |= IB_SMP_DIRECTION; + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} + +static int reply_failure(struct ib_smp *smp) +{ + /* + * The verbs framework will handle the directed/LID route + * packet changes. + */ + smp->method = IB_MGMT_METHOD_GET_RESP; + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + smp->status |= IB_SMP_DIRECTION; + return IB_MAD_RESULT_FAILURE | IB_MAD_RESULT_REPLY; +} + +static void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len) +{ + struct ib_mad_send_buf *send_buf; + struct ib_mad_agent *agent; + struct ib_smp *smp; + int ret; + unsigned long flags; + unsigned long timeout; + + agent = ibp->rvp.send_agent; + if (!agent) + return; + + /* o14-3.2.1 */ + if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE)) + return; + + /* o14-2 */ + if (ibp->rvp.trap_timeout && + time_before(jiffies, ibp->rvp.trap_timeout)) + return; + + send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR, + IB_MGMT_MAD_DATA, GFP_ATOMIC, + IB_MGMT_BASE_VERSION); + if (IS_ERR(send_buf)) + return; + + smp = send_buf->mad; + smp->base_version = IB_MGMT_BASE_VERSION; + smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; + smp->class_version = 1; + smp->method = IB_MGMT_METHOD_TRAP; + ibp->rvp.tid++; + smp->tid = cpu_to_be64(ibp->rvp.tid); + smp->attr_id = IB_SMP_ATTR_NOTICE; + /* o14-1: smp->mkey = 0; */ + memcpy(smp->data, data, len); + + spin_lock_irqsave(&ibp->rvp.lock, flags); + if (!ibp->rvp.sm_ah) { + if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) { + struct ib_ah *ah; + + ah = qib_create_qp0_ah(ibp, (u16)ibp->rvp.sm_lid); + if (IS_ERR(ah)) + ret = PTR_ERR(ah); + else { + send_buf->ah = ah; + ibp->rvp.sm_ah = ibah_to_rvtah(ah); + ret = 0; + } + } else + ret = -EINVAL; + } else { + send_buf->ah = &ibp->rvp.sm_ah->ibah; + ret = 0; + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + if (!ret) + ret = ib_post_send_mad(send_buf, NULL); + if (!ret) { + /* 4.096 usec. */ + timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000; + ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout); + } else { + ib_free_send_mad(send_buf); + ibp->rvp.trap_timeout = 0; + } +} + +/* + * Send a bad P_Key trap (ch. 14.3.8). + */ +void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl, + u32 qp1, u32 qp2, __be16 lid1, __be16 lid2) +{ + struct ib_mad_notice_attr data; + + ibp->rvp.n_pkt_drops++; + ibp->rvp.pkey_violations++; + + /* Send violation trap */ + data.generic_type = IB_NOTICE_TYPE_SECURITY; + data.prod_type_msb = 0; + data.prod_type_lsb = IB_NOTICE_PROD_CA; + data.trap_num = IB_NOTICE_TRAP_BAD_PKEY; + data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); + data.toggle_count = 0; + memset(&data.details, 0, sizeof(data.details)); + data.details.ntc_257_258.lid1 = lid1; + data.details.ntc_257_258.lid2 = lid2; + data.details.ntc_257_258.key = cpu_to_be32(key); + data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1); + data.details.ntc_257_258.qp2 = cpu_to_be32(qp2); + + qib_send_trap(ibp, &data, sizeof(data)); +} + +/* + * Send a bad M_Key trap (ch. 14.3.9). + */ +static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp) +{ + struct ib_mad_notice_attr data; + + /* Send violation trap */ + data.generic_type = IB_NOTICE_TYPE_SECURITY; + data.prod_type_msb = 0; + data.prod_type_lsb = IB_NOTICE_PROD_CA; + data.trap_num = IB_NOTICE_TRAP_BAD_MKEY; + data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); + data.toggle_count = 0; + memset(&data.details, 0, sizeof(data.details)); + data.details.ntc_256.lid = data.issuer_lid; + data.details.ntc_256.method = smp->method; + data.details.ntc_256.attr_id = smp->attr_id; + data.details.ntc_256.attr_mod = smp->attr_mod; + data.details.ntc_256.mkey = smp->mkey; + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { + u8 hop_cnt; + + data.details.ntc_256.dr_slid = smp->dr_slid; + data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE; + hop_cnt = smp->hop_cnt; + if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) { + data.details.ntc_256.dr_trunc_hop |= + IB_NOTICE_TRAP_DR_TRUNC; + hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path); + } + data.details.ntc_256.dr_trunc_hop |= hop_cnt; + memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path, + hop_cnt); + } + + qib_send_trap(ibp, &data, sizeof(data)); +} + +/* + * Send a Port Capability Mask Changed trap (ch. 14.3.11). + */ +void qib_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num) +{ + struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); + struct qib_devdata *dd = dd_from_dev(ibdev); + struct qib_ibport *ibp = &dd->pport[port_num - 1].ibport_data; + struct ib_mad_notice_attr data; + + data.generic_type = IB_NOTICE_TYPE_INFO; + data.prod_type_msb = 0; + data.prod_type_lsb = IB_NOTICE_PROD_CA; + data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; + data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); + data.toggle_count = 0; + memset(&data.details, 0, sizeof(data.details)); + data.details.ntc_144.lid = data.issuer_lid; + data.details.ntc_144.new_cap_mask = + cpu_to_be32(ibp->rvp.port_cap_flags); + qib_send_trap(ibp, &data, sizeof(data)); +} + +/* + * Send a System Image GUID Changed trap (ch. 14.3.12). + */ +void qib_sys_guid_chg(struct qib_ibport *ibp) +{ + struct ib_mad_notice_attr data; + + data.generic_type = IB_NOTICE_TYPE_INFO; + data.prod_type_msb = 0; + data.prod_type_lsb = IB_NOTICE_PROD_CA; + data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG; + data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); + data.toggle_count = 0; + memset(&data.details, 0, sizeof(data.details)); + data.details.ntc_145.lid = data.issuer_lid; + data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid; + + qib_send_trap(ibp, &data, sizeof(data)); +} + +/* + * Send a Node Description Changed trap (ch. 14.3.13). + */ +void qib_node_desc_chg(struct qib_ibport *ibp) +{ + struct ib_mad_notice_attr data; + + data.generic_type = IB_NOTICE_TYPE_INFO; + data.prod_type_msb = 0; + data.prod_type_lsb = IB_NOTICE_PROD_CA; + data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; + data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); + data.toggle_count = 0; + memset(&data.details, 0, sizeof(data.details)); + data.details.ntc_144.lid = data.issuer_lid; + data.details.ntc_144.local_changes = 1; + data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG; + + qib_send_trap(ibp, &data, sizeof(data)); +} + +static int subn_get_nodedescription(struct ib_smp *smp, + struct ib_device *ibdev) +{ + if (smp->attr_mod) + smp->status |= IB_SMP_INVALID_FIELD; + + memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); + + return reply(smp); +} + +static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct ib_node_info *nip = (struct ib_node_info *)&smp->data; + struct qib_devdata *dd = dd_from_ibdev(ibdev); + u32 majrev, minrev; + unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ + + /* GUID 0 is illegal */ + if (smp->attr_mod || pidx >= dd->num_pports || + dd->pport[pidx].guid == 0) + smp->status |= IB_SMP_INVALID_FIELD; + else + nip->port_guid = dd->pport[pidx].guid; + + nip->base_version = 1; + nip->class_version = 1; + nip->node_type = 1; /* channel adapter */ + nip->num_ports = ibdev->phys_port_cnt; + /* This is already in network order */ + nip->sys_guid = ib_qib_sys_image_guid; + nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */ + nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd)); + nip->device_id = cpu_to_be16(dd->deviceid); + majrev = dd->majrev; + minrev = dd->minrev; + nip->revision = cpu_to_be32((majrev << 16) | minrev); + nip->local_port_num = port; + nip->vendor_id[0] = QIB_SRC_OUI_1; + nip->vendor_id[1] = QIB_SRC_OUI_2; + nip->vendor_id[2] = QIB_SRC_OUI_3; + + return reply(smp); +} + +static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct qib_devdata *dd = dd_from_ibdev(ibdev); + u32 startgx = 8 * be32_to_cpu(smp->attr_mod); + __be64 *p = (__be64 *) smp->data; + unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ + + /* 32 blocks of 8 64-bit GUIDs per block */ + + memset(smp->data, 0, sizeof(smp->data)); + + if (startgx == 0 && pidx < dd->num_pports) { + struct qib_pportdata *ppd = dd->pport + pidx; + struct qib_ibport *ibp = &ppd->ibport_data; + __be64 g = ppd->guid; + unsigned i; + + /* GUID 0 is illegal */ + if (g == 0) + smp->status |= IB_SMP_INVALID_FIELD; + else { + /* The first is a copy of the read-only HW GUID. */ + p[0] = g; + for (i = 1; i < QIB_GUIDS_PER_PORT; i++) + p[i] = ibp->guids[i - 1]; + } + } else + smp->status |= IB_SMP_INVALID_FIELD; + + return reply(smp); +} + +static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w) +{ + (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w); +} + +static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s) +{ + (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s); +} + +static int get_overrunthreshold(struct qib_pportdata *ppd) +{ + return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH); +} + +/** + * set_overrunthreshold - set the overrun threshold + * @ppd: the physical port data + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n) +{ + (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH, + (u32)n); + return 0; +} + +static int get_phyerrthreshold(struct qib_pportdata *ppd) +{ + return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH); +} + +/** + * set_phyerrthreshold - set the physical error threshold + * @ppd: the physical port data + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n) +{ + (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH, + (u32)n); + return 0; +} + +/** + * get_linkdowndefaultstate - get the default linkdown state + * @ppd: the physical port data + * + * Returns zero if the default is POLL, 1 if the default is SLEEP. + */ +static int get_linkdowndefaultstate(struct qib_pportdata *ppd) +{ + return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) == + IB_LINKINITCMD_SLEEP; +} + +static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags) +{ + int valid_mkey = 0; + int ret = 0; + + /* Is the mkey in the process of expiring? */ + if (ibp->rvp.mkey_lease_timeout && + time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) { + /* Clear timeout and mkey protection field. */ + ibp->rvp.mkey_lease_timeout = 0; + ibp->rvp.mkeyprot = 0; + } + + if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->rvp.mkey == 0 || + ibp->rvp.mkey == smp->mkey) + valid_mkey = 1; + + /* Unset lease timeout on any valid Get/Set/TrapRepress */ + if (valid_mkey && ibp->rvp.mkey_lease_timeout && + (smp->method == IB_MGMT_METHOD_GET || + smp->method == IB_MGMT_METHOD_SET || + smp->method == IB_MGMT_METHOD_TRAP_REPRESS)) + ibp->rvp.mkey_lease_timeout = 0; + + if (!valid_mkey) { + switch (smp->method) { + case IB_MGMT_METHOD_GET: + /* Bad mkey not a violation below level 2 */ + if (ibp->rvp.mkeyprot < 2) + break; + fallthrough; + case IB_MGMT_METHOD_SET: + case IB_MGMT_METHOD_TRAP_REPRESS: + if (ibp->rvp.mkey_violations != 0xFFFF) + ++ibp->rvp.mkey_violations; + if (!ibp->rvp.mkey_lease_timeout && + ibp->rvp.mkey_lease_period) + ibp->rvp.mkey_lease_timeout = jiffies + + ibp->rvp.mkey_lease_period * HZ; + /* Generate a trap notice. */ + qib_bad_mkey(ibp, smp); + ret = 1; + } + } + + return ret; +} + +static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct qib_devdata *dd; + struct qib_pportdata *ppd; + struct qib_ibport *ibp; + struct ib_port_info *pip = (struct ib_port_info *)smp->data; + u8 mtu; + int ret; + u32 state; + u32 port_num = be32_to_cpu(smp->attr_mod); + + if (port_num == 0) + port_num = port; + else { + if (port_num > ibdev->phys_port_cnt) { + smp->status |= IB_SMP_INVALID_FIELD; + ret = reply(smp); + goto bail; + } + if (port_num != port) { + ibp = to_iport(ibdev, port_num); + ret = check_mkey(ibp, smp, 0); + if (ret) { + ret = IB_MAD_RESULT_FAILURE; + goto bail; + } + } + } + + dd = dd_from_ibdev(ibdev); + /* IB numbers ports from 1, hdw from 0 */ + ppd = dd->pport + (port_num - 1); + ibp = &ppd->ibport_data; + + /* Clear all fields. Only set the non-zero fields. */ + memset(smp->data, 0, sizeof(smp->data)); + + /* Only return the mkey if the protection field allows it. */ + if (!(smp->method == IB_MGMT_METHOD_GET && + ibp->rvp.mkey != smp->mkey && + ibp->rvp.mkeyprot == 1)) + pip->mkey = ibp->rvp.mkey; + pip->gid_prefix = ibp->rvp.gid_prefix; + pip->lid = cpu_to_be16(ppd->lid); + pip->sm_lid = cpu_to_be16((u16)ibp->rvp.sm_lid); + pip->cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags); + /* pip->diag_code; */ + pip->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period); + pip->local_port_num = port; + pip->link_width_enabled = ppd->link_width_enabled; + pip->link_width_supported = ppd->link_width_supported; + pip->link_width_active = ppd->link_width_active; + state = dd->f_iblink_state(ppd->lastibcstat); + pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state; + + pip->portphysstate_linkdown = + (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) | + (get_linkdowndefaultstate(ppd) ? 1 : 2); + pip->mkeyprot_resv_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc; + pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) | + ppd->link_speed_enabled; + switch (ppd->ibmtu) { + default: /* something is wrong; fall through */ + case 4096: + mtu = IB_MTU_4096; + break; + case 2048: + mtu = IB_MTU_2048; + break; + case 1024: + mtu = IB_MTU_1024; + break; + case 512: + mtu = IB_MTU_512; + break; + case 256: + mtu = IB_MTU_256; + break; + } + pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->rvp.sm_sl; + pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */ + pip->vl_high_limit = ibp->rvp.vl_high_limit; + pip->vl_arb_high_cap = + dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP); + pip->vl_arb_low_cap = + dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP); + /* InitTypeReply = 0 */ + pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; + /* HCAs ignore VLStallCount and HOQLife */ + /* pip->vlstallcnt_hoqlife; */ + pip->operationalvl_pei_peo_fpi_fpo = + dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4; + pip->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations); + /* P_KeyViolations are counted by hardware. */ + pip->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations); + pip->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations); + /* Only the hardware GUID is supported for now */ + pip->guid_cap = QIB_GUIDS_PER_PORT; + pip->clientrereg_resv_subnetto = ibp->rvp.subnet_timeout; + /* 32.768 usec. response time (guessing) */ + pip->resv_resptimevalue = 3; + pip->localphyerrors_overrunerrors = + (get_phyerrthreshold(ppd) << 4) | + get_overrunthreshold(ppd); + /* pip->max_credit_hint; */ + if (ibp->rvp.port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { + u32 v; + + v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY); + pip->link_roundtrip_latency[0] = v >> 16; + pip->link_roundtrip_latency[1] = v >> 8; + pip->link_roundtrip_latency[2] = v; + } + + ret = reply(smp); + +bail: + return ret; +} + +/** + * get_pkeys - return the PKEY table + * @dd: the qlogic_ib device + * @port: the IB port number + * @pkeys: the pkey table is placed here + */ +static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) +{ + struct qib_pportdata *ppd = dd->pport + port - 1; + /* + * always a kernel context, no locking needed. + * If we get here with ppd setup, no need to check + * that pd is valid. + */ + struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx]; + + memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys)); + + return 0; +} + +static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); + u16 *p = (u16 *) smp->data; + __be16 *q = (__be16 *) smp->data; + + /* 64 blocks of 32 16-bit P_Key entries */ + + memset(smp->data, 0, sizeof(smp->data)); + if (startpx == 0) { + struct qib_devdata *dd = dd_from_ibdev(ibdev); + unsigned i, n = qib_get_npkeys(dd); + + get_pkeys(dd, port, p); + + for (i = 0; i < n; i++) + q[i] = cpu_to_be16(p[i]); + } else + smp->status |= IB_SMP_INVALID_FIELD; + + return reply(smp); +} + +static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct qib_devdata *dd = dd_from_ibdev(ibdev); + u32 startgx = 8 * be32_to_cpu(smp->attr_mod); + __be64 *p = (__be64 *) smp->data; + unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ + + /* 32 blocks of 8 64-bit GUIDs per block */ + + if (startgx == 0 && pidx < dd->num_pports) { + struct qib_pportdata *ppd = dd->pport + pidx; + struct qib_ibport *ibp = &ppd->ibport_data; + unsigned i; + + /* The first entry is read-only. */ + for (i = 1; i < QIB_GUIDS_PER_PORT; i++) + ibp->guids[i - 1] = p[i]; + } else + smp->status |= IB_SMP_INVALID_FIELD; + + /* The only GUID we support is the first read-only entry. */ + return subn_get_guidinfo(smp, ibdev, port); +} + +/** + * subn_set_portinfo - set port information + * @smp: the incoming SM packet + * @ibdev: the infiniband device + * @port: the port on the device + * + * Set Portinfo (see ch. 14.2.5.6). + */ +static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct ib_port_info *pip = (struct ib_port_info *)smp->data; + struct ib_event event; + struct qib_devdata *dd; + struct qib_pportdata *ppd; + struct qib_ibport *ibp; + u8 clientrereg = (pip->clientrereg_resv_subnetto & 0x80); + unsigned long flags; + u16 lid, smlid; + u8 lwe; + u8 lse; + u8 state; + u8 vls; + u8 msl; + u16 lstate; + int ret, ore, mtu; + u32 port_num = be32_to_cpu(smp->attr_mod); + + if (port_num == 0) + port_num = port; + else { + if (port_num > ibdev->phys_port_cnt) + goto err; + /* Port attributes can only be set on the receiving port */ + if (port_num != port) + goto get_only; + } + + dd = dd_from_ibdev(ibdev); + /* IB numbers ports from 1, hdw from 0 */ + ppd = dd->pport + (port_num - 1); + ibp = &ppd->ibport_data; + event.device = ibdev; + event.element.port_num = port; + + ibp->rvp.mkey = pip->mkey; + ibp->rvp.gid_prefix = pip->gid_prefix; + ibp->rvp.mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); + + lid = be16_to_cpu(pip->lid); + /* Must be a valid unicast LID address. */ + if (lid == 0 || lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) + smp->status |= IB_SMP_INVALID_FIELD; + else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) { + if (ppd->lid != lid) + qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT); + if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) + qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT); + qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7); + event.event = IB_EVENT_LID_CHANGE; + ib_dispatch_event(&event); + } + + smlid = be16_to_cpu(pip->sm_lid); + msl = pip->neighbormtu_mastersmsl & 0xF; + /* Must be a valid unicast LID address. */ + if (smlid == 0 || smlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) + smp->status |= IB_SMP_INVALID_FIELD; + else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) { + spin_lock_irqsave(&ibp->rvp.lock, flags); + if (ibp->rvp.sm_ah) { + if (smlid != ibp->rvp.sm_lid) + rdma_ah_set_dlid(&ibp->rvp.sm_ah->attr, + smlid); + if (msl != ibp->rvp.sm_sl) + rdma_ah_set_sl(&ibp->rvp.sm_ah->attr, msl); + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + if (smlid != ibp->rvp.sm_lid) + ibp->rvp.sm_lid = smlid; + if (msl != ibp->rvp.sm_sl) + ibp->rvp.sm_sl = msl; + event.event = IB_EVENT_SM_CHANGE; + ib_dispatch_event(&event); + } + + /* Allow 1x or 4x to be set (see 14.2.6.6). */ + lwe = pip->link_width_enabled; + if (lwe) { + if (lwe == 0xFF) + set_link_width_enabled(ppd, ppd->link_width_supported); + else if (lwe >= 16 || (lwe & ~ppd->link_width_supported)) + smp->status |= IB_SMP_INVALID_FIELD; + else if (lwe != ppd->link_width_enabled) + set_link_width_enabled(ppd, lwe); + } + + lse = pip->linkspeedactive_enabled & 0xF; + if (lse) { + /* + * The IB 1.2 spec. only allows link speed values + * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific + * speeds. + */ + if (lse == 15) + set_link_speed_enabled(ppd, + ppd->link_speed_supported); + else if (lse >= 8 || (lse & ~ppd->link_speed_supported)) + smp->status |= IB_SMP_INVALID_FIELD; + else if (lse != ppd->link_speed_enabled) + set_link_speed_enabled(ppd, lse); + } + + /* Set link down default state. */ + switch (pip->portphysstate_linkdown & 0xF) { + case 0: /* NOP */ + break; + case 1: /* SLEEP */ + (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, + IB_LINKINITCMD_SLEEP); + break; + case 2: /* POLL */ + (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, + IB_LINKINITCMD_POLL); + break; + default: + smp->status |= IB_SMP_INVALID_FIELD; + } + + ibp->rvp.mkeyprot = pip->mkeyprot_resv_lmc >> 6; + ibp->rvp.vl_high_limit = pip->vl_high_limit; + (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT, + ibp->rvp.vl_high_limit); + + mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF); + if (mtu == -1) + smp->status |= IB_SMP_INVALID_FIELD; + else + qib_set_mtu(ppd, mtu); + + /* Set operational VLs */ + vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF; + if (vls) { + if (vls > ppd->vls_supported) + smp->status |= IB_SMP_INVALID_FIELD; + else + (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls); + } + + if (pip->mkey_violations == 0) + ibp->rvp.mkey_violations = 0; + + if (pip->pkey_violations == 0) + ibp->rvp.pkey_violations = 0; + + if (pip->qkey_violations == 0) + ibp->rvp.qkey_violations = 0; + + ore = pip->localphyerrors_overrunerrors; + if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF)) + smp->status |= IB_SMP_INVALID_FIELD; + + if (set_overrunthreshold(ppd, (ore & 0xF))) + smp->status |= IB_SMP_INVALID_FIELD; + + ibp->rvp.subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; + + /* + * Do the port state change now that the other link parameters + * have been set. + * Changing the port physical state only makes sense if the link + * is down or is being set to down. + */ + state = pip->linkspeed_portstate & 0xF; + lstate = (pip->portphysstate_linkdown >> 4) & 0xF; + if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) + smp->status |= IB_SMP_INVALID_FIELD; + + /* + * Only state changes of DOWN, ARM, and ACTIVE are valid + * and must be in the correct state to take effect (see 7.2.6). + */ + switch (state) { + case IB_PORT_NOP: + if (lstate == 0) + break; + fallthrough; + case IB_PORT_DOWN: + if (lstate == 0) + lstate = QIB_IB_LINKDOWN_ONLY; + else if (lstate == 1) + lstate = QIB_IB_LINKDOWN_SLEEP; + else if (lstate == 2) + lstate = QIB_IB_LINKDOWN; + else if (lstate == 3) + lstate = QIB_IB_LINKDOWN_DISABLE; + else { + smp->status |= IB_SMP_INVALID_FIELD; + break; + } + spin_lock_irqsave(&ppd->lflags_lock, flags); + ppd->lflags &= ~QIBL_LINKV; + spin_unlock_irqrestore(&ppd->lflags_lock, flags); + qib_set_linkstate(ppd, lstate); + /* + * Don't send a reply if the response would be sent + * through the disabled port. + */ + if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) { + ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + goto done; + } + qib_wait_linkstate(ppd, QIBL_LINKV, 10); + break; + case IB_PORT_ARMED: + qib_set_linkstate(ppd, QIB_IB_LINKARM); + break; + case IB_PORT_ACTIVE: + qib_set_linkstate(ppd, QIB_IB_LINKACTIVE); + break; + default: + smp->status |= IB_SMP_INVALID_FIELD; + } + + if (clientrereg) { + event.event = IB_EVENT_CLIENT_REREGISTER; + ib_dispatch_event(&event); + } + + /* restore re-reg bit per o14-12.2.1 */ + pip->clientrereg_resv_subnetto |= clientrereg; + + goto get_only; + +err: + smp->status |= IB_SMP_INVALID_FIELD; +get_only: + ret = subn_get_portinfo(smp, ibdev, port); +done: + return ret; +} + +/** + * rm_pkey - decrecment the reference count for the given PKEY + * @ppd: the qlogic_ib device + * @key: the PKEY index + * + * Return true if this was the last reference and the hardware table entry + * needs to be changed. + */ +static int rm_pkey(struct qib_pportdata *ppd, u16 key) +{ + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { + if (ppd->pkeys[i] != key) + continue; + if (atomic_dec_and_test(&ppd->pkeyrefs[i])) { + ppd->pkeys[i] = 0; + ret = 1; + goto bail; + } + break; + } + + ret = 0; + +bail: + return ret; +} + +/** + * add_pkey - add the given PKEY to the hardware table + * @ppd: the qlogic_ib device + * @key: the PKEY + * + * Return an error code if unable to add the entry, zero if no change, + * or 1 if the hardware PKEY register needs to be updated. + */ +static int add_pkey(struct qib_pportdata *ppd, u16 key) +{ + int i; + u16 lkey = key & 0x7FFF; + int any = 0; + int ret; + + if (lkey == 0x7FFF) { + ret = 0; + goto bail; + } + + /* Look for an empty slot or a matching PKEY. */ + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { + if (!ppd->pkeys[i]) { + any++; + continue; + } + /* If it matches exactly, try to increment the ref count */ + if (ppd->pkeys[i] == key) { + if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) { + ret = 0; + goto bail; + } + /* Lost the race. Look for an empty slot below. */ + atomic_dec(&ppd->pkeyrefs[i]); + any++; + } + /* + * It makes no sense to have both the limited and unlimited + * PKEY set at the same time since the unlimited one will + * disable the limited one. + */ + if ((ppd->pkeys[i] & 0x7FFF) == lkey) { + ret = -EEXIST; + goto bail; + } + } + if (!any) { + ret = -EBUSY; + goto bail; + } + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { + if (!ppd->pkeys[i] && + atomic_inc_return(&ppd->pkeyrefs[i]) == 1) { + /* for qibstats, etc. */ + ppd->pkeys[i] = key; + ret = 1; + goto bail; + } + } + ret = -EBUSY; + +bail: + return ret; +} + +/** + * set_pkeys - set the PKEY table for ctxt 0 + * @dd: the qlogic_ib device + * @port: the IB port number + * @pkeys: the PKEY table + */ +static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) +{ + struct qib_pportdata *ppd; + struct qib_ctxtdata *rcd; + int i; + int changed = 0; + + /* + * IB port one/two always maps to context zero/one, + * always a kernel context, no locking needed + * If we get here with ppd setup, no need to check + * that rcd is valid. + */ + ppd = dd->pport + (port - 1); + rcd = dd->rcd[ppd->hw_pidx]; + + for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) { + u16 key = pkeys[i]; + u16 okey = rcd->pkeys[i]; + + if (key == okey) + continue; + /* + * The value of this PKEY table entry is changing. + * Remove the old entry in the hardware's array of PKEYs. + */ + if (okey & 0x7FFF) + changed |= rm_pkey(ppd, okey); + if (key & 0x7FFF) { + int ret = add_pkey(ppd, key); + + if (ret < 0) + key = 0; + else + changed |= ret; + } + rcd->pkeys[i] = key; + } + if (changed) { + struct ib_event event; + + (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0); + + event.event = IB_EVENT_PKEY_CHANGE; + event.device = &dd->verbs_dev.rdi.ibdev; + event.element.port_num = port; + ib_dispatch_event(&event); + } + return 0; +} + +static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); + __be16 *p = (__be16 *) smp->data; + u16 *q = (u16 *) smp->data; + struct qib_devdata *dd = dd_from_ibdev(ibdev); + unsigned i, n = qib_get_npkeys(dd); + + for (i = 0; i < n; i++) + q[i] = be16_to_cpu(p[i]); + + if (startpx != 0 || set_pkeys(dd, port, q) != 0) + smp->status |= IB_SMP_INVALID_FIELD; + + return subn_get_pkeytable(smp, ibdev, port); +} + +static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct qib_ibport *ibp = to_iport(ibdev, port); + u8 *p = (u8 *) smp->data; + unsigned i; + + memset(smp->data, 0, sizeof(smp->data)); + + if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP)) + smp->status |= IB_SMP_UNSUP_METHOD; + else + for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2) + *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1]; + + return reply(smp); +} + +static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + struct qib_ibport *ibp = to_iport(ibdev, port); + u8 *p = (u8 *) smp->data; + unsigned i; + + if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP)) { + smp->status |= IB_SMP_UNSUP_METHOD; + return reply(smp); + } + + for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) { + ibp->sl_to_vl[i] = *p >> 4; + ibp->sl_to_vl[i + 1] = *p & 0xF; + } + qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)), + _QIB_EVENT_SL2VL_CHANGE_BIT); + + return subn_get_sl_to_vl(smp, ibdev, port); +} + +static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + unsigned which = be32_to_cpu(smp->attr_mod) >> 16; + struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); + + memset(smp->data, 0, sizeof(smp->data)); + + if (ppd->vls_supported == IB_VL_VL0) + smp->status |= IB_SMP_UNSUP_METHOD; + else if (which == IB_VLARB_LOWPRI_0_31) + (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, + smp->data); + else if (which == IB_VLARB_HIGHPRI_0_31) + (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, + smp->data); + else + smp->status |= IB_SMP_INVALID_FIELD; + + return reply(smp); +} + +static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + unsigned which = be32_to_cpu(smp->attr_mod) >> 16; + struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); + + if (ppd->vls_supported == IB_VL_VL0) + smp->status |= IB_SMP_UNSUP_METHOD; + else if (which == IB_VLARB_LOWPRI_0_31) + (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, + smp->data); + else if (which == IB_VLARB_HIGHPRI_0_31) + (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, + smp->data); + else + smp->status |= IB_SMP_INVALID_FIELD; + + return subn_get_vl_arb(smp, ibdev, port); +} + +static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev, + u8 port) +{ + /* + * For now, we only send the trap once so no need to process this. + * o13-6, o13-7, + * o14-3.a4 The SMA shall not send any message in response to a valid + * SubnTrapRepress() message. + */ + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; +} + +static int pma_get_classportinfo(struct ib_pma_mad *pmp, + struct ib_device *ibdev) +{ + struct ib_class_port_info *p = + (struct ib_class_port_info *)pmp->data; + struct qib_devdata *dd = dd_from_ibdev(ibdev); + + memset(pmp->data, 0, sizeof(pmp->data)); + + if (pmp->mad_hdr.attr_mod != 0) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + /* Note that AllPortSelect is not valid */ + p->base_version = 1; + p->class_version = 1; + p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; + /* + * Set the most significant bit of CM2 to indicate support for + * congestion statistics + */ + ib_set_cpi_capmask2(p, + dd->psxmitwait_supported << + (31 - IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE)); + /* + * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. + */ + ib_set_cpi_resp_time(p, 18); + + return reply((struct ib_smp *) pmp); +} + +static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplescontrol *p = + (struct ib_pma_portsamplescontrol *)pmp->data; + struct qib_ibdev *dev = to_idev(ibdev); + struct qib_devdata *dd = dd_from_dev(dev); + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + unsigned long flags; + u8 port_select = p->port_select; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + goto bail; + } + spin_lock_irqsave(&ibp->rvp.lock, flags); + p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS); + p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); + p->counter_width = 4; /* 32 bit counters */ + p->counter_mask0_9 = COUNTER_MASK0_9; + p->sample_start = cpu_to_be32(ibp->rvp.pma_sample_start); + p->sample_interval = cpu_to_be32(ibp->rvp.pma_sample_interval); + p->tag = cpu_to_be16(ibp->rvp.pma_tag); + p->counter_select[0] = ibp->rvp.pma_counter_select[0]; + p->counter_select[1] = ibp->rvp.pma_counter_select[1]; + p->counter_select[2] = ibp->rvp.pma_counter_select[2]; + p->counter_select[3] = ibp->rvp.pma_counter_select[3]; + p->counter_select[4] = ibp->rvp.pma_counter_select[4]; + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + +bail: + return reply((struct ib_smp *) pmp); +} + +static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplescontrol *p = + (struct ib_pma_portsamplescontrol *)pmp->data; + struct qib_ibdev *dev = to_idev(ibdev); + struct qib_devdata *dd = dd_from_dev(dev); + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + unsigned long flags; + u8 status, xmit_flags; + int ret; + + if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + spin_lock_irqsave(&ibp->rvp.lock, flags); + + /* Port Sampling code owns the PS* HW counters */ + xmit_flags = ppd->cong_stats.flags; + ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE; + status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); + if (status == IB_PMA_SAMPLE_STATUS_DONE || + (status == IB_PMA_SAMPLE_STATUS_RUNNING && + xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) { + ibp->rvp.pma_sample_start = be32_to_cpu(p->sample_start); + ibp->rvp.pma_sample_interval = be32_to_cpu(p->sample_interval); + ibp->rvp.pma_tag = be16_to_cpu(p->tag); + ibp->rvp.pma_counter_select[0] = p->counter_select[0]; + ibp->rvp.pma_counter_select[1] = p->counter_select[1]; + ibp->rvp.pma_counter_select[2] = p->counter_select[2]; + ibp->rvp.pma_counter_select[3] = p->counter_select[3]; + ibp->rvp.pma_counter_select[4] = p->counter_select[4]; + dd->f_set_cntr_sample(ppd, ibp->rvp.pma_sample_interval, + ibp->rvp.pma_sample_start); + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + ret = pma_get_portsamplescontrol(pmp, ibdev, port); + +bail: + return ret; +} + +static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd, + __be16 sel) +{ + u64 ret; + + switch (sel) { + case IB_PMA_PORT_XMIT_DATA: + ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA); + break; + case IB_PMA_PORT_RCV_DATA: + ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA); + break; + case IB_PMA_PORT_XMIT_PKTS: + ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS); + break; + case IB_PMA_PORT_RCV_PKTS: + ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS); + break; + case IB_PMA_PORT_XMIT_WAIT: + ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT); + break; + default: + ret = 0; + } + + return ret; +} + +/* This function assumes that the xmit_wait lock is already held */ +static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd) +{ + u32 delta; + + delta = get_counter(&ppd->ibport_data, ppd, + IB_PMA_PORT_XMIT_WAIT); + return ppd->cong_stats.counter + delta; +} + +static void cache_hw_sample_counters(struct qib_pportdata *ppd) +{ + struct qib_ibport *ibp = &ppd->ibport_data; + + ppd->cong_stats.counter_cache.psxmitdata = + get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA); + ppd->cong_stats.counter_cache.psrcvdata = + get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA); + ppd->cong_stats.counter_cache.psxmitpkts = + get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS); + ppd->cong_stats.counter_cache.psrcvpkts = + get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS); + ppd->cong_stats.counter_cache.psxmitwait = + get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT); +} + +static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd, + __be16 sel) +{ + u64 ret; + + switch (sel) { + case IB_PMA_PORT_XMIT_DATA: + ret = ppd->cong_stats.counter_cache.psxmitdata; + break; + case IB_PMA_PORT_RCV_DATA: + ret = ppd->cong_stats.counter_cache.psrcvdata; + break; + case IB_PMA_PORT_XMIT_PKTS: + ret = ppd->cong_stats.counter_cache.psxmitpkts; + break; + case IB_PMA_PORT_RCV_PKTS: + ret = ppd->cong_stats.counter_cache.psrcvpkts; + break; + case IB_PMA_PORT_XMIT_WAIT: + ret = ppd->cong_stats.counter_cache.psxmitwait; + break; + default: + ret = 0; + } + + return ret; +} + +static int pma_get_portsamplesresult(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplesresult *p = + (struct ib_pma_portsamplesresult *)pmp->data; + struct qib_ibdev *dev = to_idev(ibdev); + struct qib_devdata *dd = dd_from_dev(dev); + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + unsigned long flags; + u8 status; + int i; + + memset(pmp->data, 0, sizeof(pmp->data)); + spin_lock_irqsave(&ibp->rvp.lock, flags); + p->tag = cpu_to_be16(ibp->rvp.pma_tag); + if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) + p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; + else { + status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); + p->sample_status = cpu_to_be16(status); + if (status == IB_PMA_SAMPLE_STATUS_DONE) { + cache_hw_sample_counters(ppd); + ppd->cong_stats.counter = + xmit_wait_get_value_delta(ppd); + dd->f_set_cntr_sample(ppd, + QIB_CONG_TIMER_PSINTERVAL, 0); + ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; + } + } + for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++) + p->counter[i] = cpu_to_be32( + get_cache_hw_sample_counters( + ppd, ibp->rvp.pma_counter_select[i])); + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + return reply((struct ib_smp *) pmp); +} + +static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplesresult_ext *p = + (struct ib_pma_portsamplesresult_ext *)pmp->data; + struct qib_ibdev *dev = to_idev(ibdev); + struct qib_devdata *dd = dd_from_dev(dev); + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + unsigned long flags; + u8 status; + int i; + + /* Port Sampling code owns the PS* HW counters */ + memset(pmp->data, 0, sizeof(pmp->data)); + spin_lock_irqsave(&ibp->rvp.lock, flags); + p->tag = cpu_to_be16(ibp->rvp.pma_tag); + if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) + p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; + else { + status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); + p->sample_status = cpu_to_be16(status); + /* 64 bits */ + p->extended_width = cpu_to_be32(0x80000000); + if (status == IB_PMA_SAMPLE_STATUS_DONE) { + cache_hw_sample_counters(ppd); + ppd->cong_stats.counter = + xmit_wait_get_value_delta(ppd); + dd->f_set_cntr_sample(ppd, + QIB_CONG_TIMER_PSINTERVAL, 0); + ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; + } + } + for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++) + p->counter[i] = cpu_to_be64( + get_cache_hw_sample_counters( + ppd, ibp->rvp.pma_counter_select[i])); + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + return reply((struct ib_smp *) pmp); +} + +static int pma_get_portcounters(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + struct qib_verbs_counters cntrs; + u8 port_select = p->port_select; + + qib_get_counters(ppd, &cntrs); + + /* Adjust counters for any resets done. */ + cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; + cntrs.link_error_recovery_counter -= + ibp->z_link_error_recovery_counter; + cntrs.link_downed_counter -= ibp->z_link_downed_counter; + cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; + cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors; + cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; + cntrs.port_xmit_data -= ibp->z_port_xmit_data; + cntrs.port_rcv_data -= ibp->z_port_rcv_data; + cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; + cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; + cntrs.local_link_integrity_errors -= + ibp->z_local_link_integrity_errors; + cntrs.excessive_buffer_overrun_errors -= + ibp->z_excessive_buffer_overrun_errors; + cntrs.vl15_dropped -= ibp->z_vl15_dropped; + cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || port_select != port) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + if (cntrs.symbol_error_counter > 0xFFFFUL) + p->symbol_error_counter = cpu_to_be16(0xFFFF); + else + p->symbol_error_counter = + cpu_to_be16((u16)cntrs.symbol_error_counter); + if (cntrs.link_error_recovery_counter > 0xFFUL) + p->link_error_recovery_counter = 0xFF; + else + p->link_error_recovery_counter = + (u8)cntrs.link_error_recovery_counter; + if (cntrs.link_downed_counter > 0xFFUL) + p->link_downed_counter = 0xFF; + else + p->link_downed_counter = (u8)cntrs.link_downed_counter; + if (cntrs.port_rcv_errors > 0xFFFFUL) + p->port_rcv_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_errors = + cpu_to_be16((u16) cntrs.port_rcv_errors); + if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) + p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_remphys_errors = + cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); + if (cntrs.port_xmit_discards > 0xFFFFUL) + p->port_xmit_discards = cpu_to_be16(0xFFFF); + else + p->port_xmit_discards = + cpu_to_be16((u16)cntrs.port_xmit_discards); + if (cntrs.local_link_integrity_errors > 0xFUL) + cntrs.local_link_integrity_errors = 0xFUL; + if (cntrs.excessive_buffer_overrun_errors > 0xFUL) + cntrs.excessive_buffer_overrun_errors = 0xFUL; + p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | + cntrs.excessive_buffer_overrun_errors; + if (cntrs.vl15_dropped > 0xFFFFUL) + p->vl15_dropped = cpu_to_be16(0xFFFF); + else + p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); + if (cntrs.port_xmit_data > 0xFFFFFFFFUL) + p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); + else + p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); + if (cntrs.port_rcv_data > 0xFFFFFFFFUL) + p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); + else + p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); + if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) + p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); + else + p->port_xmit_packets = + cpu_to_be32((u32)cntrs.port_xmit_packets); + if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) + p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); + else + p->port_rcv_packets = + cpu_to_be32((u32) cntrs.port_rcv_packets); + + return reply((struct ib_smp *) pmp); +} + +static int pma_get_portcounters_cong(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + /* Congestion PMA packets start at offset 24 not 64 */ + struct ib_pma_portcounters_cong *p = + (struct ib_pma_portcounters_cong *)pmp->reserved; + struct qib_verbs_counters cntrs; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + struct qib_devdata *dd = dd_from_ppd(ppd); + u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF; + u64 xmit_wait_counter; + unsigned long flags; + + /* + * This check is performed only in the GET method because the + * SET method ends up calling this anyway. + */ + if (!dd->psxmitwait_supported) + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + if (port_select != port) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + qib_get_counters(ppd, &cntrs); + spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); + xmit_wait_counter = xmit_wait_get_value_delta(ppd); + spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); + + /* Adjust counters for any resets done. */ + cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; + cntrs.link_error_recovery_counter -= + ibp->z_link_error_recovery_counter; + cntrs.link_downed_counter -= ibp->z_link_downed_counter; + cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; + cntrs.port_rcv_remphys_errors -= + ibp->z_port_rcv_remphys_errors; + cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; + cntrs.local_link_integrity_errors -= + ibp->z_local_link_integrity_errors; + cntrs.excessive_buffer_overrun_errors -= + ibp->z_excessive_buffer_overrun_errors; + cntrs.vl15_dropped -= ibp->z_vl15_dropped; + cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped; + cntrs.port_xmit_data -= ibp->z_port_xmit_data; + cntrs.port_rcv_data -= ibp->z_port_rcv_data; + cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; + cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; + + memset(pmp->reserved, 0, sizeof(pmp->reserved)); + memset(pmp->data, 0, sizeof(pmp->data)); + + /* + * Set top 3 bits to indicate interval in picoseconds in + * remaining bits. + */ + p->port_check_rate = + cpu_to_be16((QIB_XMIT_RATE_PICO << 13) | + (dd->psxmitwait_check_rate & + ~(QIB_XMIT_RATE_PICO << 13))); + p->port_adr_events = cpu_to_be64(0); + p->port_xmit_wait = cpu_to_be64(xmit_wait_counter); + p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data); + p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data); + p->port_xmit_packets = + cpu_to_be64(cntrs.port_xmit_packets); + p->port_rcv_packets = + cpu_to_be64(cntrs.port_rcv_packets); + if (cntrs.symbol_error_counter > 0xFFFFUL) + p->symbol_error_counter = cpu_to_be16(0xFFFF); + else + p->symbol_error_counter = + cpu_to_be16( + (u16)cntrs.symbol_error_counter); + if (cntrs.link_error_recovery_counter > 0xFFUL) + p->link_error_recovery_counter = 0xFF; + else + p->link_error_recovery_counter = + (u8)cntrs.link_error_recovery_counter; + if (cntrs.link_downed_counter > 0xFFUL) + p->link_downed_counter = 0xFF; + else + p->link_downed_counter = + (u8)cntrs.link_downed_counter; + if (cntrs.port_rcv_errors > 0xFFFFUL) + p->port_rcv_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_errors = + cpu_to_be16((u16) cntrs.port_rcv_errors); + if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) + p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_remphys_errors = + cpu_to_be16( + (u16)cntrs.port_rcv_remphys_errors); + if (cntrs.port_xmit_discards > 0xFFFFUL) + p->port_xmit_discards = cpu_to_be16(0xFFFF); + else + p->port_xmit_discards = + cpu_to_be16((u16)cntrs.port_xmit_discards); + if (cntrs.local_link_integrity_errors > 0xFUL) + cntrs.local_link_integrity_errors = 0xFUL; + if (cntrs.excessive_buffer_overrun_errors > 0xFUL) + cntrs.excessive_buffer_overrun_errors = 0xFUL; + p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | + cntrs.excessive_buffer_overrun_errors; + if (cntrs.vl15_dropped > 0xFFFFUL) + p->vl15_dropped = cpu_to_be16(0xFFFF); + else + p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); + + return reply((struct ib_smp *)pmp); +} + +static void qib_snapshot_pmacounters( + struct qib_ibport *ibp, + struct qib_pma_counters *pmacounters) +{ + struct qib_pma_counters *p; + int cpu; + + memset(pmacounters, 0, sizeof(*pmacounters)); + for_each_possible_cpu(cpu) { + p = per_cpu_ptr(ibp->pmastats, cpu); + pmacounters->n_unicast_xmit += p->n_unicast_xmit; + pmacounters->n_unicast_rcv += p->n_unicast_rcv; + pmacounters->n_multicast_xmit += p->n_multicast_xmit; + pmacounters->n_multicast_rcv += p->n_multicast_rcv; + } +} + +static int pma_get_portcounters_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters_ext *p = + (struct ib_pma_portcounters_ext *)pmp->data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + u64 swords, rwords, spkts, rpkts, xwait; + struct qib_pma_counters pma; + u8 port_select = p->port_select; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + goto bail; + } + + qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); + + /* Adjust counters for any resets done. */ + swords -= ibp->z_port_xmit_data; + rwords -= ibp->z_port_rcv_data; + spkts -= ibp->z_port_xmit_packets; + rpkts -= ibp->z_port_rcv_packets; + + p->port_xmit_data = cpu_to_be64(swords); + p->port_rcv_data = cpu_to_be64(rwords); + p->port_xmit_packets = cpu_to_be64(spkts); + p->port_rcv_packets = cpu_to_be64(rpkts); + + qib_snapshot_pmacounters(ibp, &pma); + + p->port_unicast_xmit_packets = cpu_to_be64(pma.n_unicast_xmit + - ibp->z_unicast_xmit); + p->port_unicast_rcv_packets = cpu_to_be64(pma.n_unicast_rcv + - ibp->z_unicast_rcv); + p->port_multicast_xmit_packets = cpu_to_be64(pma.n_multicast_xmit + - ibp->z_multicast_xmit); + p->port_multicast_rcv_packets = cpu_to_be64(pma.n_multicast_rcv + - ibp->z_multicast_rcv); + +bail: + return reply((struct ib_smp *) pmp); +} + +static int pma_set_portcounters(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + struct qib_verbs_counters cntrs; + + /* + * Since the HW doesn't support clearing counters, we save the + * current count and subtract it from future responses. + */ + qib_get_counters(ppd, &cntrs); + + if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) + ibp->z_symbol_error_counter = cntrs.symbol_error_counter; + + if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) + ibp->z_link_error_recovery_counter = + cntrs.link_error_recovery_counter; + + if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) + ibp->z_link_downed_counter = cntrs.link_downed_counter; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) + ibp->z_port_rcv_errors = cntrs.port_rcv_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) + ibp->z_port_rcv_remphys_errors = + cntrs.port_rcv_remphys_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) + ibp->z_port_xmit_discards = cntrs.port_xmit_discards; + + if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) + ibp->z_local_link_integrity_errors = + cntrs.local_link_integrity_errors; + + if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) + ibp->z_excessive_buffer_overrun_errors = + cntrs.excessive_buffer_overrun_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { + ibp->rvp.n_vl15_dropped = 0; + ibp->z_vl15_dropped = cntrs.vl15_dropped; + } + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) + ibp->z_port_xmit_data = cntrs.port_xmit_data; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) + ibp->z_port_rcv_data = cntrs.port_rcv_data; + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) + ibp->z_port_xmit_packets = cntrs.port_xmit_packets; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) + ibp->z_port_rcv_packets = cntrs.port_rcv_packets; + + return pma_get_portcounters(pmp, ibdev, port); +} + +static int pma_set_portcounters_cong(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + struct qib_devdata *dd = dd_from_ppd(ppd); + struct qib_verbs_counters cntrs; + u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF; + int ret = 0; + unsigned long flags; + + qib_get_counters(ppd, &cntrs); + /* Get counter values before we save them */ + ret = pma_get_portcounters_cong(pmp, ibdev, port); + + if (counter_select & IB_PMA_SEL_CONG_XMIT) { + spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); + ppd->cong_stats.counter = 0; + dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, + 0x0); + spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); + } + if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) { + ibp->z_port_xmit_data = cntrs.port_xmit_data; + ibp->z_port_rcv_data = cntrs.port_rcv_data; + ibp->z_port_xmit_packets = cntrs.port_xmit_packets; + ibp->z_port_rcv_packets = cntrs.port_rcv_packets; + } + if (counter_select & IB_PMA_SEL_CONG_ALL) { + ibp->z_symbol_error_counter = + cntrs.symbol_error_counter; + ibp->z_link_error_recovery_counter = + cntrs.link_error_recovery_counter; + ibp->z_link_downed_counter = + cntrs.link_downed_counter; + ibp->z_port_rcv_errors = cntrs.port_rcv_errors; + ibp->z_port_rcv_remphys_errors = + cntrs.port_rcv_remphys_errors; + ibp->z_port_xmit_discards = + cntrs.port_xmit_discards; + ibp->z_local_link_integrity_errors = + cntrs.local_link_integrity_errors; + ibp->z_excessive_buffer_overrun_errors = + cntrs.excessive_buffer_overrun_errors; + ibp->rvp.n_vl15_dropped = 0; + ibp->z_vl15_dropped = cntrs.vl15_dropped; + } + + return ret; +} + +static int pma_set_portcounters_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + u64 swords, rwords, spkts, rpkts, xwait; + struct qib_pma_counters pma; + + qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); + + if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) + ibp->z_port_xmit_data = swords; + + if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) + ibp->z_port_rcv_data = rwords; + + if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) + ibp->z_port_xmit_packets = spkts; + + if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) + ibp->z_port_rcv_packets = rpkts; + + qib_snapshot_pmacounters(ibp, &pma); + + if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) + ibp->z_unicast_xmit = pma.n_unicast_xmit; + + if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) + ibp->z_unicast_rcv = pma.n_unicast_rcv; + + if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) + ibp->z_multicast_xmit = pma.n_multicast_xmit; + + if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) + ibp->z_multicast_rcv = pma.n_multicast_rcv; + + return pma_get_portcounters_ext(pmp, ibdev, port); +} + +static int process_subn(struct ib_device *ibdev, int mad_flags, + u8 port, const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_smp *smp = (struct ib_smp *)out_mad; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + int ret; + + *out_mad = *in_mad; + if (smp->class_version != 1) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply(smp); + goto bail; + } + + ret = check_mkey(ibp, smp, mad_flags); + if (ret) { + u32 port_num = be32_to_cpu(smp->attr_mod); + + /* + * If this is a get/set portinfo, we already check the + * M_Key if the MAD is for another port and the M_Key + * is OK on the receiving port. This check is needed + * to increment the error counters when the M_Key + * fails to match on *both* ports. + */ + if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && + (smp->method == IB_MGMT_METHOD_GET || + smp->method == IB_MGMT_METHOD_SET) && + port_num && port_num <= ibdev->phys_port_cnt && + port != port_num) + (void) check_mkey(to_iport(ibdev, port_num), smp, 0); + ret = IB_MAD_RESULT_FAILURE; + goto bail; + } + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (smp->attr_id) { + case IB_SMP_ATTR_NODE_DESC: + ret = subn_get_nodedescription(smp, ibdev); + goto bail; + case IB_SMP_ATTR_NODE_INFO: + ret = subn_get_nodeinfo(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_GUID_INFO: + ret = subn_get_guidinfo(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_PORT_INFO: + ret = subn_get_portinfo(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_PKEY_TABLE: + ret = subn_get_pkeytable(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_SL_TO_VL_TABLE: + ret = subn_get_sl_to_vl(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = subn_get_vl_arb(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_SM_INFO: + if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) { + ret = IB_MAD_RESULT_SUCCESS | + IB_MAD_RESULT_CONSUMED; + goto bail; + } + if (ibp->rvp.port_cap_flags & IB_PORT_SM) { + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + } + fallthrough; + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply(smp); + goto bail; + } + + case IB_MGMT_METHOD_SET: + switch (smp->attr_id) { + case IB_SMP_ATTR_GUID_INFO: + ret = subn_set_guidinfo(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_PORT_INFO: + ret = subn_set_portinfo(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_PKEY_TABLE: + ret = subn_set_pkeytable(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_SL_TO_VL_TABLE: + ret = subn_set_sl_to_vl(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = subn_set_vl_arb(smp, ibdev, port); + goto bail; + case IB_SMP_ATTR_SM_INFO: + if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) { + ret = IB_MAD_RESULT_SUCCESS | + IB_MAD_RESULT_CONSUMED; + goto bail; + } + if (ibp->rvp.port_cap_flags & IB_PORT_SM) { + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + } + fallthrough; + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply(smp); + goto bail; + } + + case IB_MGMT_METHOD_TRAP_REPRESS: + if (smp->attr_id == IB_SMP_ATTR_NOTICE) + ret = subn_trap_repress(smp, ibdev, port); + else { + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply(smp); + } + goto bail; + + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_REPORT: + case IB_MGMT_METHOD_REPORT_RESP: + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + + case IB_MGMT_METHOD_SEND: + if (ib_get_smp_direction(smp) && + smp->attr_id == QIB_VENDOR_IPG) { + ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT, + smp->data[0]); + ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + } else + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + + default: + smp->status |= IB_SMP_UNSUP_METHOD; + ret = reply(smp); + } + +bail: + return ret; +} + +static int process_perf(struct ib_device *ibdev, u8 port, + const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; + int ret; + + *out_mad = *in_mad; + if (pmp->mad_hdr.class_version != 1) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + switch (pmp->mad_hdr.method) { + case IB_MGMT_METHOD_GET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_CLASS_PORT_INFO: + ret = pma_get_classportinfo(pmp, ibdev); + goto bail; + case IB_PMA_PORT_SAMPLES_CONTROL: + ret = pma_get_portsamplescontrol(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_SAMPLES_RESULT: + ret = pma_get_portsamplesresult(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_SAMPLES_RESULT_EXT: + ret = pma_get_portsamplesresult_ext(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS: + ret = pma_get_portcounters(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS_EXT: + ret = pma_get_portcounters_ext(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS_CONG: + ret = pma_get_portcounters_cong(pmp, ibdev, port); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + case IB_MGMT_METHOD_SET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_PORT_SAMPLES_CONTROL: + ret = pma_set_portsamplescontrol(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS: + ret = pma_set_portcounters(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS_EXT: + ret = pma_set_portcounters_ext(pmp, ibdev, port); + goto bail; + case IB_PMA_PORT_COUNTERS_CONG: + ret = pma_set_portcounters_cong(pmp, ibdev, port); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_smp *) pmp); + } + +bail: + return ret; +} + +static int cc_get_classportinfo(struct ib_cc_mad *ccp, + struct ib_device *ibdev) +{ + struct ib_cc_classportinfo_attr *p = + (struct ib_cc_classportinfo_attr *)ccp->mgmt_data; + + p->base_version = 1; + p->class_version = 1; + p->cap_mask = 0; + + /* + * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. + */ + p->resp_time_value = 18; + + return reply((struct ib_smp *) ccp); +} + +static int cc_get_congestion_info(struct ib_cc_mad *ccp, + struct ib_device *ibdev, u8 port) +{ + struct ib_cc_info_attr *p = + (struct ib_cc_info_attr *)ccp->mgmt_data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + + p->congestion_info = 0; + p->control_table_cap = ppd->cc_max_table_entries; + + return reply((struct ib_smp *) ccp); +} + +static int cc_get_congestion_setting(struct ib_cc_mad *ccp, + struct ib_device *ibdev, u8 port) +{ + int i; + struct ib_cc_congestion_setting_attr *p = + (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + struct ib_cc_congestion_entry_shadow *entries; + + spin_lock(&ppd->cc_shadow_lock); + + entries = ppd->congestion_entries_shadow->entries; + p->port_control = cpu_to_be16( + ppd->congestion_entries_shadow->port_control); + p->control_map = cpu_to_be16( + ppd->congestion_entries_shadow->control_map); + for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { + p->entries[i].ccti_increase = entries[i].ccti_increase; + p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer); + p->entries[i].trigger_threshold = entries[i].trigger_threshold; + p->entries[i].ccti_min = entries[i].ccti_min; + } + + spin_unlock(&ppd->cc_shadow_lock); + + return reply((struct ib_smp *) ccp); +} + +static int cc_get_congestion_control_table(struct ib_cc_mad *ccp, + struct ib_device *ibdev, u8 port) +{ + struct ib_cc_table_attr *p = + (struct ib_cc_table_attr *)ccp->mgmt_data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + u32 cct_block_index = be32_to_cpu(ccp->attr_mod); + u32 max_cct_block; + u32 cct_entry; + struct ib_cc_table_entry_shadow *entries; + int i; + + /* Is the table index more than what is supported? */ + if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) + goto bail; + + spin_lock(&ppd->cc_shadow_lock); + + max_cct_block = + (ppd->ccti_entries_shadow->ccti_last_entry + 1)/IB_CCT_ENTRIES; + max_cct_block = max_cct_block ? max_cct_block - 1 : 0; + + if (cct_block_index > max_cct_block) { + spin_unlock(&ppd->cc_shadow_lock); + goto bail; + } + + ccp->attr_mod = cpu_to_be32(cct_block_index); + + cct_entry = IB_CCT_ENTRIES * (cct_block_index + 1); + + cct_entry--; + + p->ccti_limit = cpu_to_be16(cct_entry); + + entries = &ppd->ccti_entries_shadow-> + entries[IB_CCT_ENTRIES * cct_block_index]; + cct_entry %= IB_CCT_ENTRIES; + + for (i = 0; i <= cct_entry; i++) + p->ccti_entries[i].entry = cpu_to_be16(entries[i].entry); + + spin_unlock(&ppd->cc_shadow_lock); + + return reply((struct ib_smp *) ccp); + +bail: + return reply_failure((struct ib_smp *) ccp); +} + +static int cc_set_congestion_setting(struct ib_cc_mad *ccp, + struct ib_device *ibdev, u8 port) +{ + struct ib_cc_congestion_setting_attr *p = + (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + int i; + + ppd->cc_sl_control_map = be16_to_cpu(p->control_map); + + for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { + ppd->congestion_entries[i].ccti_increase = + p->entries[i].ccti_increase; + + ppd->congestion_entries[i].ccti_timer = + be16_to_cpu(p->entries[i].ccti_timer); + + ppd->congestion_entries[i].trigger_threshold = + p->entries[i].trigger_threshold; + + ppd->congestion_entries[i].ccti_min = + p->entries[i].ccti_min; + } + + return reply((struct ib_smp *) ccp); +} + +static int cc_set_congestion_control_table(struct ib_cc_mad *ccp, + struct ib_device *ibdev, u8 port) +{ + struct ib_cc_table_attr *p = + (struct ib_cc_table_attr *)ccp->mgmt_data; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + u32 cct_block_index = be32_to_cpu(ccp->attr_mod); + u32 cct_entry; + struct ib_cc_table_entry_shadow *entries; + int i; + + /* Is the table index more than what is supported? */ + if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) + goto bail; + + /* If this packet is the first in the sequence then + * zero the total table entry count. + */ + if (be16_to_cpu(p->ccti_limit) < IB_CCT_ENTRIES) + ppd->total_cct_entry = 0; + + cct_entry = (be16_to_cpu(p->ccti_limit))%IB_CCT_ENTRIES; + + /* ccti_limit is 0 to 63 */ + ppd->total_cct_entry += (cct_entry + 1); + + if (ppd->total_cct_entry > ppd->cc_supported_table_entries) + goto bail; + + ppd->ccti_limit = be16_to_cpu(p->ccti_limit); + + entries = ppd->ccti_entries + (IB_CCT_ENTRIES * cct_block_index); + + for (i = 0; i <= cct_entry; i++) + entries[i].entry = be16_to_cpu(p->ccti_entries[i].entry); + + spin_lock(&ppd->cc_shadow_lock); + + ppd->ccti_entries_shadow->ccti_last_entry = ppd->total_cct_entry - 1; + memcpy(ppd->ccti_entries_shadow->entries, ppd->ccti_entries, + (ppd->total_cct_entry * sizeof(struct ib_cc_table_entry))); + + ppd->congestion_entries_shadow->port_control = IB_CC_CCS_PC_SL_BASED; + ppd->congestion_entries_shadow->control_map = ppd->cc_sl_control_map; + memcpy(ppd->congestion_entries_shadow->entries, ppd->congestion_entries, + IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry)); + + spin_unlock(&ppd->cc_shadow_lock); + + return reply((struct ib_smp *) ccp); + +bail: + return reply_failure((struct ib_smp *) ccp); +} + +static int process_cc(struct ib_device *ibdev, int mad_flags, + u8 port, const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad; + *out_mad = *in_mad; + + if (ccp->class_version != 2) { + ccp->status |= IB_SMP_UNSUP_VERSION; + return reply((struct ib_smp *)ccp); + } + + switch (ccp->method) { + case IB_MGMT_METHOD_GET: + switch (ccp->attr_id) { + case IB_CC_ATTR_CLASSPORTINFO: + return cc_get_classportinfo(ccp, ibdev); + case IB_CC_ATTR_CONGESTION_INFO: + return cc_get_congestion_info(ccp, ibdev, port); + case IB_CC_ATTR_CA_CONGESTION_SETTING: + return cc_get_congestion_setting(ccp, ibdev, port); + case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: + return cc_get_congestion_control_table(ccp, ibdev, port); + default: + ccp->status |= IB_SMP_UNSUP_METH_ATTR; + return reply((struct ib_smp *) ccp); + } + case IB_MGMT_METHOD_SET: + switch (ccp->attr_id) { + case IB_CC_ATTR_CA_CONGESTION_SETTING: + return cc_set_congestion_setting(ccp, ibdev, port); + case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: + return cc_set_congestion_control_table(ccp, ibdev, port); + default: + ccp->status |= IB_SMP_UNSUP_METH_ATTR; + return reply((struct ib_smp *) ccp); + } + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + return IB_MAD_RESULT_SUCCESS; + } + + /* method is unsupported */ + ccp->status |= IB_SMP_UNSUP_METHOD; + return reply((struct ib_smp *) ccp); +} + +/** + * qib_process_mad - process an incoming MAD packet + * @ibdev: the infiniband device this packet came in on + * @mad_flags: MAD flags + * @port: the port number this packet came in on + * @in_wc: the work completion entry for this packet + * @in_grh: the global route header for this packet + * @in: the incoming MAD + * @out: any outgoing MAD reply + * @out_mad_size: size of the outgoing MAD reply + * @out_mad_pkey_index: unused + * + * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not + * interested in processing. + * + * Note that the verbs framework has already done the MAD sanity checks, + * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE + * MADs. + * + * This is called by the ib_mad module. + */ +int qib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad *in, struct ib_mad *out, + size_t *out_mad_size, u16 *out_mad_pkey_index) +{ + int ret; + struct qib_ibport *ibp = to_iport(ibdev, port); + struct qib_pportdata *ppd = ppd_from_ibp(ibp); + + switch (in->mad_hdr.mgmt_class) { + case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: + case IB_MGMT_CLASS_SUBN_LID_ROUTED: + ret = process_subn(ibdev, mad_flags, port, in, out); + goto bail; + + case IB_MGMT_CLASS_PERF_MGMT: + ret = process_perf(ibdev, port, in, out); + goto bail; + + case IB_MGMT_CLASS_CONG_MGMT: + if (!ppd->congestion_entries_shadow || + !qib_cc_table_size) { + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + } + ret = process_cc(ibdev, mad_flags, port, in, out); + goto bail; + + default: + ret = IB_MAD_RESULT_SUCCESS; + } + +bail: + return ret; +} + +static void xmit_wait_timer_func(struct timer_list *t) +{ + struct qib_pportdata *ppd = from_timer(ppd, t, cong_stats.timer); + struct qib_devdata *dd = dd_from_ppd(ppd); + unsigned long flags; + u8 status; + + spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); + if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) { + status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); + if (status == IB_PMA_SAMPLE_STATUS_DONE) { + /* save counter cache */ + cache_hw_sample_counters(ppd); + ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; + } else + goto done; + } + ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); + dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0); +done: + spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); + mod_timer(&ppd->cong_stats.timer, jiffies + HZ); +} + +void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx) +{ + struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); + struct qib_devdata *dd = container_of(ibdev, + struct qib_devdata, verbs_dev); + + /* Initialize xmit_wait structure */ + dd->pport[port_idx].cong_stats.counter = 0; + timer_setup(&dd->pport[port_idx].cong_stats.timer, + xmit_wait_timer_func, 0); + dd->pport[port_idx].cong_stats.timer.expires = 0; + add_timer(&dd->pport[port_idx].cong_stats.timer); +} + +void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx) +{ + struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); + struct qib_devdata *dd = container_of(ibdev, + struct qib_devdata, verbs_dev); + + if (dd->pport[port_idx].cong_stats.timer.function) + del_timer_sync(&dd->pport[port_idx].cong_stats.timer); + + if (dd->pport[port_idx].ibport_data.smi_ah) + rdma_destroy_ah(&dd->pport[port_idx].ibport_data.smi_ah->ibah, + RDMA_DESTROY_AH_SLEEPABLE); +} |