--- /dev/null
+/*
+ * 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->send_agent;
+ if (!agent)
+ return;
+
+ /* o14-3.2.1 */
+ if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE))
+ return;
+
+ /* o14-2 */
+ if (ibp->trap_timeout && time_before(jiffies, ibp->trap_timeout))
+ return;
+
+ send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
+ IB_MGMT_MAD_DATA, GFP_ATOMIC);
+ 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->tid++;
+ smp->tid = cpu_to_be64(ibp->tid);
+ smp->attr_id = IB_SMP_ATTR_NOTICE;
+ /* o14-1: smp->mkey = 0; */
+ memcpy(smp->data, data, len);
+
+ spin_lock_irqsave(&ibp->lock, flags);
+ if (!ibp->sm_ah) {
+ if (ibp->sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
+ struct ib_ah *ah;
+
+ ah = qib_create_qp0_ah(ibp, ibp->sm_lid);
+ if (IS_ERR(ah))
+ ret = PTR_ERR(ah);
+ else {
+ send_buf->ah = ah;
+ ibp->sm_ah = to_iah(ah);
+ ret = 0;
+ }
+ } else
+ ret = -EINVAL;
+ } else {
+ send_buf->ah = &ibp->sm_ah->ibah;
+ ret = 0;
+ }
+ spin_unlock_irqrestore(&ibp->lock, flags);
+
+ if (!ret)
+ ret = ib_post_send_mad(send_buf, NULL);
+ if (!ret) {
+ /* 4.096 usec. */
+ timeout = (4096 * (1UL << ibp->subnet_timeout)) / 1000;
+ ibp->trap_timeout = jiffies + usecs_to_jiffies(timeout);
+ } else {
+ ib_free_send_mad(send_buf);
+ ibp->trap_timeout = 0;
+ }
+}
+
+/*
+ * Send a bad [PQ]_Key trap (ch. 14.3.8).
+ */
+void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
+ u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
+{
+ struct ib_mad_notice_attr data;
+
+ if (trap_num == IB_NOTICE_TRAP_BAD_PKEY)
+ ibp->pkey_violations++;
+ else
+ ibp->qkey_violations++;
+ ibp->n_pkt_drops++;
+
+ /* 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 = trap_num;
+ 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 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.new_cap_mask = cpu_to_be32(ibp->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 vendor, 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;
+ vendor = dd->vendorid;
+ 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->mkey_lease_timeout &&
+ time_after_eq(jiffies, ibp->mkey_lease_timeout)) {
+ /* Clear timeout and mkey protection field. */
+ ibp->mkey_lease_timeout = 0;
+ ibp->mkeyprot = 0;
+ }
+
+ if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->mkey == 0 ||
+ ibp->mkey == smp->mkey)
+ valid_mkey = 1;
+
+ /* Unset lease timeout on any valid Get/Set/TrapRepress */
+ if (valid_mkey && ibp->mkey_lease_timeout &&
+ (smp->method == IB_MGMT_METHOD_GET ||
+ smp->method == IB_MGMT_METHOD_SET ||
+ smp->method == IB_MGMT_METHOD_TRAP_REPRESS))
+ ibp->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->mkeyprot < 2)
+ break;
+ case IB_MGMT_METHOD_SET:
+ case IB_MGMT_METHOD_TRAP_REPRESS:
+ if (ibp->mkey_violations != 0xFFFF)
+ ++ibp->mkey_violations;
+ if (!ibp->mkey_lease_timeout && ibp->mkey_lease_period)
+ ibp->mkey_lease_timeout = jiffies +
+ ibp->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->mkey != smp->mkey &&
+ ibp->mkeyprot == 1))
+ pip->mkey = ibp->mkey;
+ pip->gid_prefix = ibp->gid_prefix;
+ pip->lid = cpu_to_be16(ppd->lid);
+ pip->sm_lid = cpu_to_be16(ibp->sm_lid);
+ pip->cap_mask = cpu_to_be32(ibp->port_cap_flags);
+ /* pip->diag_code; */
+ pip->mkey_lease_period = cpu_to_be16(ibp->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->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->sm_sl;
+ pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
+ pip->vl_high_limit = ibp->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->mkey_violations);
+ /* P_KeyViolations are counted by hardware. */
+ pip->pkey_violations = cpu_to_be16(ibp->pkey_violations);
+ pip->qkey_violations = cpu_to_be16(ibp->qkey_violations);
+ /* Only the hardware GUID is supported for now */
+ pip->guid_cap = QIB_GUIDS_PER_PORT;
+ pip->clientrereg_resv_subnetto = ibp->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->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->mkey = pip->mkey;
+ ibp->gid_prefix = pip->gid_prefix;
+ ibp->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 >= QIB_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 >= QIB_MULTICAST_LID_BASE)
+ smp->status |= IB_SMP_INVALID_FIELD;
+ else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) {
+ spin_lock_irqsave(&ibp->lock, flags);
+ if (ibp->sm_ah) {
+ if (smlid != ibp->sm_lid)
+ ibp->sm_ah->attr.dlid = smlid;
+ if (msl != ibp->sm_sl)
+ ibp->sm_ah->attr.sl = msl;
+ }
+ spin_unlock_irqrestore(&ibp->lock, flags);
+ if (smlid != ibp->sm_lid)
+ ibp->sm_lid = smlid;
+ if (msl != ibp->sm_sl)
+ ibp->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->mkeyprot = pip->mkeyprot_resv_lmc >> 6;
+ ibp->vl_high_limit = pip->vl_high_limit;
+ (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
+ ibp->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->mkey_violations = 0;
+
+ if (pip->pkey_violations == 0)
+ ibp->pkey_violations = 0;
+
+ if (pip->qkey_violations == 0)
+ ibp->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->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);
+ }
+
+ ret = subn_get_portinfo(smp, ibdev, port);
+
+ /* 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
+ * @dd: 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
+ * @dd: 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.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->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->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
+ */
+ p->reserved[0] = dd->psxmitwait_supported << 7;
+ /*
+ * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
+ */
+ p->resp_time_value = 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->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->pma_sample_start);
+ p->sample_interval = cpu_to_be32(ibp->pma_sample_interval);
+ p->tag = cpu_to_be16(ibp->pma_tag);
+ p->counter_select[0] = ibp->pma_counter_select[0];
+ p->counter_select[1] = ibp->pma_counter_select[1];
+ p->counter_select[2] = ibp->pma_counter_select[2];
+ p->counter_select[3] = ibp->pma_counter_select[3];
+ p->counter_select[4] = ibp->pma_counter_select[4];
+ spin_unlock_irqrestore(&ibp->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->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->pma_sample_start = be32_to_cpu(p->sample_start);
+ ibp->pma_sample_interval = be32_to_cpu(p->sample_interval);
+ ibp->pma_tag = be16_to_cpu(p->tag);
+ ibp->pma_counter_select[0] = p->counter_select[0];
+ ibp->pma_counter_select[1] = p->counter_select[1];
+ ibp->pma_counter_select[2] = p->counter_select[2];
+ ibp->pma_counter_select[3] = p->counter_select[3];
+ ibp->pma_counter_select[4] = p->counter_select[4];
+ dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval,
+ ibp->pma_sample_start);
+ }
+ spin_unlock_irqrestore(&ibp->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->lock, flags);
+ p->tag = cpu_to_be16(ibp->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->pma_counter_select); i++)
+ p->counter[i] = cpu_to_be32(
+ get_cache_hw_sample_counters(
+ ppd, ibp->pma_counter_select[i]));
+ spin_unlock_irqrestore(&ibp->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->lock, flags);
+ p->tag = cpu_to_be16(ibp->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->pma_counter_select); i++)
+ p->counter[i] = cpu_to_be64(
+ get_cache_hw_sample_counters(
+ ppd, ibp->pma_counter_select[i]));
+ spin_unlock_irqrestore(&ibp->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->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.lock, flags);
+ xmit_wait_counter = xmit_wait_get_value_delta(ppd);
+ spin_unlock_irqrestore(&ppd->ibport_data.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->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) +
+ 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->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.lock, flags);
+ ppd->cong_stats.counter = 0;
+ dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
+ 0x0);
+ spin_unlock_irqrestore(&ppd->ibport_data.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->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, 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->port_cap_flags & IB_PORT_SM_DISABLED) {
+ ret = IB_MAD_RESULT_SUCCESS |
+ IB_MAD_RESULT_CONSUMED;
+ goto bail;
+ }
+ if (ibp->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->port_cap_flags & IB_PORT_SM_DISABLED) {
+ ret = IB_MAD_RESULT_SUCCESS |
+ IB_MAD_RESULT_CONSUMED;
+ goto bail;
+ }
+ if (ibp->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,
+ 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;
+
+ memset(ccp->mgmt_data, 0, sizeof(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);
+
+ memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
+
+ 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;
+
+ memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
+
+ 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;
+
+ memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data));
+
+ 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 check_cc_key(struct qib_ibport *ibp,
+ struct ib_cc_mad *ccp, int mad_flags)
+{
+ return 0;
+}
+
+static int process_cc(struct ib_device *ibdev, int mad_flags,
+ u8 port, struct ib_mad *in_mad,
+ struct ib_mad *out_mad)
+{
+ struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad;
+ struct qib_ibport *ibp = to_iport(ibdev, port);
+ int ret;
+
+ *out_mad = *in_mad;
+
+ if (ccp->class_version != 2) {
+ ccp->status |= IB_SMP_UNSUP_VERSION;
+ ret = reply((struct ib_smp *)ccp);
+ goto bail;
+ }
+
+ ret = check_cc_key(ibp, ccp, mad_flags);
+ if (ret)
+ goto bail;
+
+ switch (ccp->method) {
+ case IB_MGMT_METHOD_GET:
+ switch (ccp->attr_id) {
+ case IB_CC_ATTR_CLASSPORTINFO:
+ ret = cc_get_classportinfo(ccp, ibdev);
+ goto bail;
+
+ case IB_CC_ATTR_CONGESTION_INFO:
+ ret = cc_get_congestion_info(ccp, ibdev, port);
+ goto bail;
+
+ case IB_CC_ATTR_CA_CONGESTION_SETTING:
+ ret = cc_get_congestion_setting(ccp, ibdev, port);
+ goto bail;
+
+ case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
+ ret = cc_get_congestion_control_table(ccp, ibdev, port);
+ goto bail;
+
+ /* FALLTHROUGH */
+ default:
+ ccp->status |= IB_SMP_UNSUP_METH_ATTR;
+ ret = reply((struct ib_smp *) ccp);
+ goto bail;
+ }
+
+ case IB_MGMT_METHOD_SET:
+ switch (ccp->attr_id) {
+ case IB_CC_ATTR_CA_CONGESTION_SETTING:
+ ret = cc_set_congestion_setting(ccp, ibdev, port);
+ goto bail;
+
+ case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
+ ret = cc_set_congestion_control_table(ccp, ibdev, port);
+ goto bail;
+
+ /* FALLTHROUGH */
+ default:
+ ccp->status |= IB_SMP_UNSUP_METH_ATTR;
+ ret = reply((struct ib_smp *) ccp);
+ goto bail;
+ }
+
+ 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_TRAP:
+ default:
+ ccp->status |= IB_SMP_UNSUP_METHOD;
+ ret = reply((struct ib_smp *) ccp);
+ }
+
+bail:
+ return ret;
+}
+
+/**
+ * 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_mad: the incoming MAD
+ * @out_mad: any outgoing MAD reply
+ *
+ * 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, u8 port,
+ struct ib_wc *in_wc, struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad)
+{
+ int ret;
+ struct qib_ibport *ibp = to_iport(ibdev, port);
+ struct qib_pportdata *ppd = ppd_from_ibp(ibp);
+
+ switch (in_mad->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_mad, out_mad);
+ goto bail;
+
+ case IB_MGMT_CLASS_PERF_MGMT:
+ ret = process_perf(ibdev, port, in_mad, out_mad);
+ 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_mad, out_mad);
+ goto bail;
+
+ default:
+ ret = IB_MAD_RESULT_SUCCESS;
+ }
+
+bail:
+ return ret;
+}
+
+static void send_handler(struct ib_mad_agent *agent,
+ struct ib_mad_send_wc *mad_send_wc)
+{
+ ib_free_send_mad(mad_send_wc->send_buf);
+}
+
+static void xmit_wait_timer_func(unsigned long opaque)
+{
+ struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
+ struct qib_devdata *dd = dd_from_ppd(ppd);
+ unsigned long flags;
+ u8 status;
+
+ spin_lock_irqsave(&ppd->ibport_data.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.lock, flags);
+ mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
+}
+
+int qib_create_agents(struct qib_ibdev *dev)
+{
+ struct qib_devdata *dd = dd_from_dev(dev);
+ struct ib_mad_agent *agent;
+ struct qib_ibport *ibp;
+ int p;
+ int ret;
+
+ for (p = 0; p < dd->num_pports; p++) {
+ ibp = &dd->pport[p].ibport_data;
+ agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI,
+ NULL, 0, send_handler,
+ NULL, NULL, 0);
+ if (IS_ERR(agent)) {
+ ret = PTR_ERR(agent);
+ goto err;
+ }
+
+ /* Initialize xmit_wait structure */
+ dd->pport[p].cong_stats.counter = 0;
+ init_timer(&dd->pport[p].cong_stats.timer);
+ dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func;
+ dd->pport[p].cong_stats.timer.data =
+ (unsigned long)(&dd->pport[p]);
+ dd->pport[p].cong_stats.timer.expires = 0;
+ add_timer(&dd->pport[p].cong_stats.timer);
+
+ ibp->send_agent = agent;
+ }
+
+ return 0;
+
+err:
+ for (p = 0; p < dd->num_pports; p++) {
+ ibp = &dd->pport[p].ibport_data;
+ if (ibp->send_agent) {
+ agent = ibp->send_agent;
+ ibp->send_agent = NULL;
+ ib_unregister_mad_agent(agent);
+ }
+ }
+
+ return ret;
+}
+
+void qib_free_agents(struct qib_ibdev *dev)
+{
+ struct qib_devdata *dd = dd_from_dev(dev);
+ struct ib_mad_agent *agent;
+ struct qib_ibport *ibp;
+ int p;
+
+ for (p = 0; p < dd->num_pports; p++) {
+ ibp = &dd->pport[p].ibport_data;
+ if (ibp->send_agent) {
+ agent = ibp->send_agent;
+ ibp->send_agent = NULL;
+ ib_unregister_mad_agent(agent);
+ }
+ if (ibp->sm_ah) {
+ ib_destroy_ah(&ibp->sm_ah->ibah);
+ ibp->sm_ah = NULL;
+ }
+ if (dd->pport[p].cong_stats.timer.data)
+ del_timer_sync(&dd->pport[p].cong_stats.timer);
+ }
+}
Code Review / kvmfornfv.git / blobdiff