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Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/mad.c | 4947 |
1 files changed, 4947 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c new file mode 100644 index 000000000..1669548e9 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -0,0 +1,4947 @@ +/* + * Copyright(c) 2015-2018 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * 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. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <linux/net.h> +#include <rdma/opa_addr.h> +#define OPA_NUM_PKEY_BLOCKS_PER_SMP (OPA_SMP_DR_DATA_SIZE \ + / (OPA_PARTITION_TABLE_BLK_SIZE * sizeof(u16))) + +#include "hfi.h" +#include "mad.h" +#include "trace.h" +#include "qp.h" +#include "vnic.h" + +/* the reset value from the FM is supposed to be 0xffff, handle both */ +#define OPA_LINK_WIDTH_RESET_OLD 0x0fff +#define OPA_LINK_WIDTH_RESET 0xffff + +struct trap_node { + struct list_head list; + struct opa_mad_notice_attr data; + __be64 tid; + int len; + u32 retry; + u8 in_use; + u8 repress; +}; + +static int smp_length_check(u32 data_size, u32 request_len) +{ + if (unlikely(request_len < data_size)) + return -EINVAL; + + return 0; +} + +static int reply(struct ib_mad_hdr *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 inline void clear_opa_smp_data(struct opa_smp *smp) +{ + void *data = opa_get_smp_data(smp); + size_t size = opa_get_smp_data_size(smp); + + memset(data, 0, size); +} + +static u16 hfi1_lookup_pkey_value(struct hfi1_ibport *ibp, int pkey_idx) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + + if (pkey_idx < ARRAY_SIZE(ppd->pkeys)) + return ppd->pkeys[pkey_idx]; + + return 0; +} + +void hfi1_event_pkey_change(struct hfi1_devdata *dd, u8 port) +{ + struct ib_event event; + + event.event = IB_EVENT_PKEY_CHANGE; + event.device = &dd->verbs_dev.rdi.ibdev; + event.element.port_num = port; + ib_dispatch_event(&event); +} + +/* + * If the port is down, clean up all pending traps. We need to be careful + * with the given trap, because it may be queued. + */ +static void cleanup_traps(struct hfi1_ibport *ibp, struct trap_node *trap) +{ + struct trap_node *node, *q; + unsigned long flags; + struct list_head trap_list; + int i; + + for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) { + spin_lock_irqsave(&ibp->rvp.lock, flags); + list_replace_init(&ibp->rvp.trap_lists[i].list, &trap_list); + ibp->rvp.trap_lists[i].list_len = 0; + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + /* + * Remove all items from the list, freeing all the non-given + * traps. + */ + list_for_each_entry_safe(node, q, &trap_list, list) { + list_del(&node->list); + if (node != trap) + kfree(node); + } + } + + /* + * If this wasn't on one of the lists it would not be freed. If it + * was on the list, it is now safe to free. + */ + kfree(trap); +} + +static struct trap_node *check_and_add_trap(struct hfi1_ibport *ibp, + struct trap_node *trap) +{ + struct trap_node *node; + struct trap_list *trap_list; + unsigned long flags; + unsigned long timeout; + int found = 0; + unsigned int queue_id; + static int trap_count; + + queue_id = trap->data.generic_type & 0x0F; + if (queue_id >= RVT_MAX_TRAP_LISTS) { + trap_count++; + pr_err_ratelimited("hfi1: Invalid trap 0x%0x dropped. Total dropped: %d\n", + trap->data.generic_type, trap_count); + kfree(trap); + return NULL; + } + + /* + * Since the retry (handle timeout) does not remove a trap request + * from the list, all we have to do is compare the node. + */ + spin_lock_irqsave(&ibp->rvp.lock, flags); + trap_list = &ibp->rvp.trap_lists[queue_id]; + + list_for_each_entry(node, &trap_list->list, list) { + if (node == trap) { + node->retry++; + found = 1; + break; + } + } + + /* If it is not on the list, add it, limited to RVT-MAX_TRAP_LEN. */ + if (!found) { + if (trap_list->list_len < RVT_MAX_TRAP_LEN) { + trap_list->list_len++; + list_add_tail(&trap->list, &trap_list->list); + } else { + pr_warn_ratelimited("hfi1: Maximum trap limit reached for 0x%0x traps\n", + trap->data.generic_type); + kfree(trap); + } + } + + /* + * Next check to see if there is a timer pending. If not, set it up + * and get the first trap from the list. + */ + node = NULL; + if (!timer_pending(&ibp->rvp.trap_timer)) { + /* + * o14-2 + * If the time out is set we have to wait until it expires + * before the trap can be sent. + * This should be > RVT_TRAP_TIMEOUT + */ + timeout = (RVT_TRAP_TIMEOUT * + (1UL << ibp->rvp.subnet_timeout)) / 1000; + mod_timer(&ibp->rvp.trap_timer, + jiffies + usecs_to_jiffies(timeout)); + node = list_first_entry(&trap_list->list, struct trap_node, + list); + node->in_use = 1; + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + return node; +} + +static void subn_handle_opa_trap_repress(struct hfi1_ibport *ibp, + struct opa_smp *smp) +{ + struct trap_list *trap_list; + struct trap_node *trap; + unsigned long flags; + int i; + + if (smp->attr_id != IB_SMP_ATTR_NOTICE) + return; + + spin_lock_irqsave(&ibp->rvp.lock, flags); + for (i = 0; i < RVT_MAX_TRAP_LISTS; i++) { + trap_list = &ibp->rvp.trap_lists[i]; + trap = list_first_entry_or_null(&trap_list->list, + struct trap_node, list); + if (trap && trap->tid == smp->tid) { + if (trap->in_use) { + trap->repress = 1; + } else { + trap_list->list_len--; + list_del(&trap->list); + kfree(trap); + } + break; + } + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); +} + +static void hfi1_update_sm_ah_attr(struct hfi1_ibport *ibp, + struct rdma_ah_attr *attr, u32 dlid) +{ + rdma_ah_set_dlid(attr, dlid); + rdma_ah_set_port_num(attr, ppd_from_ibp(ibp)->port); + if (dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) { + struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); + + rdma_ah_set_ah_flags(attr, IB_AH_GRH); + grh->sgid_index = 0; + grh->hop_limit = 1; + grh->dgid.global.subnet_prefix = + ibp->rvp.gid_prefix; + grh->dgid.global.interface_id = OPA_MAKE_ID(dlid); + } +} + +static int hfi1_modify_qp0_ah(struct hfi1_ibport *ibp, + struct rvt_ah *ah, u32 dlid) +{ + struct rdma_ah_attr attr; + struct rvt_qp *qp0; + int ret = -EINVAL; + + memset(&attr, 0, sizeof(attr)); + attr.type = ah->ibah.type; + hfi1_update_sm_ah_attr(ibp, &attr, dlid); + rcu_read_lock(); + qp0 = rcu_dereference(ibp->rvp.qp[0]); + if (qp0) + ret = rdma_modify_ah(&ah->ibah, &attr); + rcu_read_unlock(); + return ret; +} + +static struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u32 dlid) +{ + struct rdma_ah_attr attr; + struct ib_ah *ah = ERR_PTR(-EINVAL); + struct rvt_qp *qp0; + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct hfi1_devdata *dd = dd_from_ppd(ppd); + u8 port_num = ppd->port; + + memset(&attr, 0, sizeof(attr)); + attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num); + hfi1_update_sm_ah_attr(ibp, &attr, dlid); + rcu_read_lock(); + qp0 = rcu_dereference(ibp->rvp.qp[0]); + if (qp0) + ah = rdma_create_ah(qp0->ibqp.pd, &attr); + rcu_read_unlock(); + return ah; +} + +static void send_trap(struct hfi1_ibport *ibp, struct trap_node *trap) +{ + struct ib_mad_send_buf *send_buf; + struct ib_mad_agent *agent; + struct opa_smp *smp; + unsigned long flags; + int pkey_idx; + u32 qpn = ppd_from_ibp(ibp)->sm_trap_qp; + + agent = ibp->rvp.send_agent; + if (!agent) { + cleanup_traps(ibp, trap); + return; + } + + /* o14-3.2.1 */ + if (driver_lstate(ppd_from_ibp(ibp)) != IB_PORT_ACTIVE) { + cleanup_traps(ibp, trap); + return; + } + + /* Add the trap to the list if necessary and see if we can send it */ + trap = check_and_add_trap(ibp, trap); + if (!trap) + return; + + pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY); + if (pkey_idx < 0) { + pr_warn("%s: failed to find limited mgmt pkey, defaulting 0x%x\n", + __func__, hfi1_get_pkey(ibp, 1)); + pkey_idx = 1; + } + + send_buf = ib_create_send_mad(agent, qpn, pkey_idx, 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 = OPA_MGMT_BASE_VERSION; + smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; + smp->class_version = OPA_SM_CLASS_VERSION; + smp->method = IB_MGMT_METHOD_TRAP; + + /* Only update the transaction ID for new traps (o13-5). */ + if (trap->tid == 0) { + ibp->rvp.tid++; + /* make sure that tid != 0 */ + if (ibp->rvp.tid == 0) + ibp->rvp.tid++; + trap->tid = cpu_to_be64(ibp->rvp.tid); + } + smp->tid = trap->tid; + + smp->attr_id = IB_SMP_ATTR_NOTICE; + /* o14-1: smp->mkey = 0; */ + + memcpy(smp->route.lid.data, &trap->data, trap->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 = hfi1_create_qp0_ah(ibp, ibp->rvp.sm_lid); + if (IS_ERR(ah)) { + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + return; + } + send_buf->ah = ah; + ibp->rvp.sm_ah = ibah_to_rvtah(ah); + } else { + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + return; + } + } else { + send_buf->ah = &ibp->rvp.sm_ah->ibah; + } + + /* + * If the trap was repressed while things were getting set up, don't + * bother sending it. This could happen for a retry. + */ + if (trap->repress) { + list_del(&trap->list); + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + kfree(trap); + ib_free_send_mad(send_buf); + return; + } + + trap->in_use = 0; + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + if (ib_post_send_mad(send_buf, NULL)) + ib_free_send_mad(send_buf); +} + +void hfi1_handle_trap_timer(struct timer_list *t) +{ + struct hfi1_ibport *ibp = from_timer(ibp, t, rvp.trap_timer); + struct trap_node *trap = NULL; + unsigned long flags; + int i; + + /* Find the trap with the highest priority */ + spin_lock_irqsave(&ibp->rvp.lock, flags); + for (i = 0; !trap && i < RVT_MAX_TRAP_LISTS; i++) { + trap = list_first_entry_or_null(&ibp->rvp.trap_lists[i].list, + struct trap_node, list); + } + spin_unlock_irqrestore(&ibp->rvp.lock, flags); + + if (trap) + send_trap(ibp, trap); +} + +static struct trap_node *create_trap_node(u8 type, __be16 trap_num, u32 lid) +{ + struct trap_node *trap; + + trap = kzalloc(sizeof(*trap), GFP_ATOMIC); + if (!trap) + return NULL; + + INIT_LIST_HEAD(&trap->list); + trap->data.generic_type = type; + trap->data.prod_type_lsb = IB_NOTICE_PROD_CA; + trap->data.trap_num = trap_num; + trap->data.issuer_lid = cpu_to_be32(lid); + + return trap; +} + +/* + * Send a bad P_Key trap (ch. 14.3.8). + */ +void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl, + u32 qp1, u32 qp2, u32 lid1, u32 lid2) +{ + struct trap_node *trap; + u32 lid = ppd_from_ibp(ibp)->lid; + + ibp->rvp.n_pkt_drops++; + ibp->rvp.pkey_violations++; + + trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_P_KEY, + lid); + if (!trap) + return; + + /* Send violation trap */ + trap->data.ntc_257_258.lid1 = cpu_to_be32(lid1); + trap->data.ntc_257_258.lid2 = cpu_to_be32(lid2); + trap->data.ntc_257_258.key = cpu_to_be32(key); + trap->data.ntc_257_258.sl = sl << 3; + trap->data.ntc_257_258.qp1 = cpu_to_be32(qp1); + trap->data.ntc_257_258.qp2 = cpu_to_be32(qp2); + + trap->len = sizeof(trap->data); + send_trap(ibp, trap); +} + +/* + * Send a bad M_Key trap (ch. 14.3.9). + */ +static void bad_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad, + __be64 mkey, __be32 dr_slid, u8 return_path[], u8 hop_cnt) +{ + struct trap_node *trap; + u32 lid = ppd_from_ibp(ibp)->lid; + + trap = create_trap_node(IB_NOTICE_TYPE_SECURITY, OPA_TRAP_BAD_M_KEY, + lid); + if (!trap) + return; + + /* Send violation trap */ + trap->data.ntc_256.lid = trap->data.issuer_lid; + trap->data.ntc_256.method = mad->method; + trap->data.ntc_256.attr_id = mad->attr_id; + trap->data.ntc_256.attr_mod = mad->attr_mod; + trap->data.ntc_256.mkey = mkey; + if (mad->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { + trap->data.ntc_256.dr_slid = dr_slid; + trap->data.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE; + if (hop_cnt > ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path)) { + trap->data.ntc_256.dr_trunc_hop |= + IB_NOTICE_TRAP_DR_TRUNC; + hop_cnt = ARRAY_SIZE(trap->data.ntc_256.dr_rtn_path); + } + trap->data.ntc_256.dr_trunc_hop |= hop_cnt; + memcpy(trap->data.ntc_256.dr_rtn_path, return_path, + hop_cnt); + } + + trap->len = sizeof(trap->data); + + send_trap(ibp, trap); +} + +/* + * Send a Port Capability Mask Changed trap (ch. 14.3.11). + */ +void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num) +{ + struct trap_node *trap; + struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi); + struct hfi1_devdata *dd = dd_from_dev(verbs_dev); + struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data; + u32 lid = ppd_from_ibp(ibp)->lid; + + trap = create_trap_node(IB_NOTICE_TYPE_INFO, + OPA_TRAP_CHANGE_CAPABILITY, + lid); + if (!trap) + return; + + trap->data.ntc_144.lid = trap->data.issuer_lid; + trap->data.ntc_144.new_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags); + trap->data.ntc_144.cap_mask3 = cpu_to_be16(ibp->rvp.port_cap3_flags); + + trap->len = sizeof(trap->data); + send_trap(ibp, trap); +} + +/* + * Send a System Image GUID Changed trap (ch. 14.3.12). + */ +void hfi1_sys_guid_chg(struct hfi1_ibport *ibp) +{ + struct trap_node *trap; + u32 lid = ppd_from_ibp(ibp)->lid; + + trap = create_trap_node(IB_NOTICE_TYPE_INFO, OPA_TRAP_CHANGE_SYSGUID, + lid); + if (!trap) + return; + + trap->data.ntc_145.new_sys_guid = ib_hfi1_sys_image_guid; + trap->data.ntc_145.lid = trap->data.issuer_lid; + + trap->len = sizeof(trap->data); + send_trap(ibp, trap); +} + +/* + * Send a Node Description Changed trap (ch. 14.3.13). + */ +void hfi1_node_desc_chg(struct hfi1_ibport *ibp) +{ + struct trap_node *trap; + u32 lid = ppd_from_ibp(ibp)->lid; + + trap = create_trap_node(IB_NOTICE_TYPE_INFO, + OPA_TRAP_CHANGE_CAPABILITY, + lid); + if (!trap) + return; + + trap->data.ntc_144.lid = trap->data.issuer_lid; + trap->data.ntc_144.change_flags = + cpu_to_be16(OPA_NOTICE_TRAP_NODE_DESC_CHG); + + trap->len = sizeof(trap->data); + send_trap(ibp, trap); +} + +static int __subn_get_opa_nodedesc(struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, + u8 port, u32 *resp_len, u32 max_len) +{ + struct opa_node_description *nd; + + if (am || smp_length_check(sizeof(*nd), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + nd = (struct opa_node_description *)data; + + memcpy(nd->data, ibdev->node_desc, sizeof(nd->data)); + + if (resp_len) + *resp_len += sizeof(*nd); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_nodeinfo(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct opa_node_info *ni; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */ + + ni = (struct opa_node_info *)data; + + /* GUID 0 is illegal */ + if (am || pidx >= dd->num_pports || ibdev->node_guid == 0 || + smp_length_check(sizeof(*ni), max_len) || + get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ni->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX); + ni->base_version = OPA_MGMT_BASE_VERSION; + ni->class_version = OPA_SM_CLASS_VERSION; + ni->node_type = 1; /* channel adapter */ + ni->num_ports = ibdev->phys_port_cnt; + /* This is already in network order */ + ni->system_image_guid = ib_hfi1_sys_image_guid; + ni->node_guid = ibdev->node_guid; + ni->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd)); + ni->device_id = cpu_to_be16(dd->pcidev->device); + ni->revision = cpu_to_be32(dd->minrev); + ni->local_port_num = port; + ni->vendor_id[0] = dd->oui1; + ni->vendor_id[1] = dd->oui2; + ni->vendor_id[2] = dd->oui3; + + if (resp_len) + *resp_len += sizeof(*ni); + + return reply((struct ib_mad_hdr *)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 hfi1_devdata *dd = dd_from_ibdev(ibdev); + unsigned pidx = port - 1; /* IB number port from 1, hw from 0 */ + + /* GUID 0 is illegal */ + if (smp->attr_mod || pidx >= dd->num_pports || + ibdev->node_guid == 0 || + get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX) == 0) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + nip->port_guid = get_sguid(to_iport(ibdev, port), HFI1_PORT_GUID_INDEX); + nip->base_version = OPA_MGMT_BASE_VERSION; + nip->class_version = OPA_SM_CLASS_VERSION; + nip->node_type = 1; /* channel adapter */ + nip->num_ports = ibdev->phys_port_cnt; + /* This is already in network order */ + nip->sys_guid = ib_hfi1_sys_image_guid; + nip->node_guid = ibdev->node_guid; + nip->partition_cap = cpu_to_be16(hfi1_get_npkeys(dd)); + nip->device_id = cpu_to_be16(dd->pcidev->device); + nip->revision = cpu_to_be32(dd->minrev); + nip->local_port_num = port; + nip->vendor_id[0] = dd->oui1; + nip->vendor_id[1] = dd->oui2; + nip->vendor_id[2] = dd->oui3; + + return reply((struct ib_mad_hdr *)smp); +} + +static void set_link_width_enabled(struct hfi1_pportdata *ppd, u32 w) +{ + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_ENB, w); +} + +static void set_link_width_downgrade_enabled(struct hfi1_pportdata *ppd, u32 w) +{ + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_LWID_DG_ENB, w); +} + +static void set_link_speed_enabled(struct hfi1_pportdata *ppd, u32 s) +{ + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_SPD_ENB, s); +} + +static int check_mkey(struct hfi1_ibport *ibp, struct ib_mad_hdr *mad, + int mad_flags, __be64 mkey, __be32 dr_slid, + u8 return_path[], u8 hop_cnt) +{ + 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 == mkey) + valid_mkey = 1; + + /* Unset lease timeout on any valid Get/Set/TrapRepress */ + if (valid_mkey && ibp->rvp.mkey_lease_timeout && + (mad->method == IB_MGMT_METHOD_GET || + mad->method == IB_MGMT_METHOD_SET || + mad->method == IB_MGMT_METHOD_TRAP_REPRESS)) + ibp->rvp.mkey_lease_timeout = 0; + + if (!valid_mkey) { + switch (mad->method) { + case IB_MGMT_METHOD_GET: + /* Bad mkey not a violation below level 2 */ + if (ibp->rvp.mkeyprot < 2) + break; + /* fall through */ + 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. */ + bad_mkey(ibp, mad, mkey, dr_slid, return_path, + hop_cnt); + ret = 1; + } + } + + return ret; +} + +/* + * The SMA caches reads from LCB registers in case the LCB is unavailable. + * (The LCB is unavailable in certain link states, for example.) + */ +struct lcb_datum { + u32 off; + u64 val; +}; + +static struct lcb_datum lcb_cache[] = { + { DC_LCB_STS_ROUND_TRIP_LTP_CNT, 0 }, +}; + +static int write_lcb_cache(u32 off, u64 val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) { + if (lcb_cache[i].off == off) { + lcb_cache[i].val = val; + return 0; + } + } + + pr_warn("%s bad offset 0x%x\n", __func__, off); + return -1; +} + +static int read_lcb_cache(u32 off, u64 *val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lcb_cache); i++) { + if (lcb_cache[i].off == off) { + *val = lcb_cache[i].val; + return 0; + } + } + + pr_warn("%s bad offset 0x%x\n", __func__, off); + return -1; +} + +void read_ltp_rtt(struct hfi1_devdata *dd) +{ + u64 reg; + + if (read_lcb_csr(dd, DC_LCB_STS_ROUND_TRIP_LTP_CNT, ®)) + dd_dev_err(dd, "%s: unable to read LTP RTT\n", __func__); + else + write_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, reg); +} + +static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + int i; + struct hfi1_devdata *dd; + struct hfi1_pportdata *ppd; + struct hfi1_ibport *ibp; + struct opa_port_info *pi = (struct opa_port_info *)data; + u8 mtu; + u8 credit_rate; + u8 is_beaconing_active; + u32 state; + u32 num_ports = OPA_AM_NPORT(am); + u32 start_of_sm_config = OPA_AM_START_SM_CFG(am); + u32 buffer_units; + u64 tmp = 0; + + if (num_ports != 1 || smp_length_check(sizeof(*pi), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + dd = dd_from_ibdev(ibdev); + /* IB numbers ports from 1, hw from 0 */ + ppd = dd->pport + (port - 1); + ibp = &ppd->ibport_data; + + if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) || + ppd->vls_supported > ARRAY_SIZE(dd->vld)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + pi->lid = cpu_to_be32(ppd->lid); + + /* 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)) + pi->mkey = ibp->rvp.mkey; + + pi->subnet_prefix = ibp->rvp.gid_prefix; + pi->sm_lid = cpu_to_be32(ibp->rvp.sm_lid); + pi->ib_cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags); + pi->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period); + pi->sm_trap_qp = cpu_to_be32(ppd->sm_trap_qp); + pi->sa_qp = cpu_to_be32(ppd->sa_qp); + + pi->link_width.enabled = cpu_to_be16(ppd->link_width_enabled); + pi->link_width.supported = cpu_to_be16(ppd->link_width_supported); + pi->link_width.active = cpu_to_be16(ppd->link_width_active); + + pi->link_width_downgrade.supported = + cpu_to_be16(ppd->link_width_downgrade_supported); + pi->link_width_downgrade.enabled = + cpu_to_be16(ppd->link_width_downgrade_enabled); + pi->link_width_downgrade.tx_active = + cpu_to_be16(ppd->link_width_downgrade_tx_active); + pi->link_width_downgrade.rx_active = + cpu_to_be16(ppd->link_width_downgrade_rx_active); + + pi->link_speed.supported = cpu_to_be16(ppd->link_speed_supported); + pi->link_speed.active = cpu_to_be16(ppd->link_speed_active); + pi->link_speed.enabled = cpu_to_be16(ppd->link_speed_enabled); + + state = driver_lstate(ppd); + + if (start_of_sm_config && (state == IB_PORT_INIT)) + ppd->is_sm_config_started = 1; + + pi->port_phys_conf = (ppd->port_type & 0xf); + + pi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4; + pi->port_states.ledenable_offlinereason |= + ppd->is_sm_config_started << 5; + /* + * This pairs with the memory barrier in hfi1_start_led_override to + * ensure that we read the correct state of LED beaconing represented + * by led_override_timer_active + */ + smp_rmb(); + is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active); + pi->port_states.ledenable_offlinereason |= is_beaconing_active << 6; + pi->port_states.ledenable_offlinereason |= + ppd->offline_disabled_reason; + + pi->port_states.portphysstate_portstate = + (driver_pstate(ppd) << 4) | state; + + pi->mkeyprotect_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc; + + memset(pi->neigh_mtu.pvlx_to_mtu, 0, sizeof(pi->neigh_mtu.pvlx_to_mtu)); + for (i = 0; i < ppd->vls_supported; i++) { + mtu = mtu_to_enum(dd->vld[i].mtu, HFI1_DEFAULT_ACTIVE_MTU); + if ((i % 2) == 0) + pi->neigh_mtu.pvlx_to_mtu[i / 2] |= (mtu << 4); + else + pi->neigh_mtu.pvlx_to_mtu[i / 2] |= mtu; + } + /* don't forget VL 15 */ + mtu = mtu_to_enum(dd->vld[15].mtu, 2048); + pi->neigh_mtu.pvlx_to_mtu[15 / 2] |= mtu; + pi->smsl = ibp->rvp.sm_sl & OPA_PI_MASK_SMSL; + pi->operational_vls = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS); + pi->partenforce_filterraw |= + (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON); + if (ppd->part_enforce & HFI1_PART_ENFORCE_IN) + pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN; + if (ppd->part_enforce & HFI1_PART_ENFORCE_OUT) + pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_OUT; + pi->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations); + /* P_KeyViolations are counted by hardware. */ + pi->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations); + pi->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations); + + pi->vl.cap = ppd->vls_supported; + pi->vl.high_limit = cpu_to_be16(ibp->rvp.vl_high_limit); + pi->vl.arb_high_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_CAP); + pi->vl.arb_low_cap = (u8)hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_VL_LOW_CAP); + + pi->clientrereg_subnettimeout = ibp->rvp.subnet_timeout; + + pi->port_link_mode = cpu_to_be16(OPA_PORT_LINK_MODE_OPA << 10 | + OPA_PORT_LINK_MODE_OPA << 5 | + OPA_PORT_LINK_MODE_OPA); + + pi->port_ltp_crc_mode = cpu_to_be16(ppd->port_ltp_crc_mode); + + pi->port_mode = cpu_to_be16( + ppd->is_active_optimize_enabled ? + OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE : 0); + + pi->port_packet_format.supported = + cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B | + OPA_PORT_PACKET_FORMAT_16B); + pi->port_packet_format.enabled = + cpu_to_be16(OPA_PORT_PACKET_FORMAT_9B | + OPA_PORT_PACKET_FORMAT_16B); + + /* flit_control.interleave is (OPA V1, version .76): + * bits use + * ---- --- + * 2 res + * 2 DistanceSupported + * 2 DistanceEnabled + * 5 MaxNextLevelTxEnabled + * 5 MaxNestLevelRxSupported + * + * HFI supports only "distance mode 1" (see OPA V1, version .76, + * section 9.6.2), so set DistanceSupported, DistanceEnabled + * to 0x1. + */ + pi->flit_control.interleave = cpu_to_be16(0x1400); + + pi->link_down_reason = ppd->local_link_down_reason.sma; + pi->neigh_link_down_reason = ppd->neigh_link_down_reason.sma; + pi->port_error_action = cpu_to_be32(ppd->port_error_action); + pi->mtucap = mtu_to_enum(hfi1_max_mtu, IB_MTU_4096); + + /* 32.768 usec. response time (guessing) */ + pi->resptimevalue = 3; + + pi->local_port_num = port; + + /* buffer info for FM */ + pi->overall_buffer_space = cpu_to_be16(dd->link_credits); + + pi->neigh_node_guid = cpu_to_be64(ppd->neighbor_guid); + pi->neigh_port_num = ppd->neighbor_port_number; + pi->port_neigh_mode = + (ppd->neighbor_type & OPA_PI_MASK_NEIGH_NODE_TYPE) | + (ppd->mgmt_allowed ? OPA_PI_MASK_NEIGH_MGMT_ALLOWED : 0) | + (ppd->neighbor_fm_security ? + OPA_PI_MASK_NEIGH_FW_AUTH_BYPASS : 0); + + /* HFIs shall always return VL15 credits to their + * neighbor in a timely manner, without any credit return pacing. + */ + credit_rate = 0; + buffer_units = (dd->vau) & OPA_PI_MASK_BUF_UNIT_BUF_ALLOC; + buffer_units |= (dd->vcu << 3) & OPA_PI_MASK_BUF_UNIT_CREDIT_ACK; + buffer_units |= (credit_rate << 6) & + OPA_PI_MASK_BUF_UNIT_VL15_CREDIT_RATE; + buffer_units |= (dd->vl15_init << 11) & OPA_PI_MASK_BUF_UNIT_VL15_INIT; + pi->buffer_units = cpu_to_be32(buffer_units); + + pi->opa_cap_mask = cpu_to_be16(ibp->rvp.port_cap3_flags); + pi->collectivemask_multicastmask = ((OPA_COLLECTIVE_NR & 0x7) + << 3 | (OPA_MCAST_NR & 0x7)); + + /* HFI supports a replay buffer 128 LTPs in size */ + pi->replay_depth.buffer = 0x80; + /* read the cached value of DC_LCB_STS_ROUND_TRIP_LTP_CNT */ + read_lcb_cache(DC_LCB_STS_ROUND_TRIP_LTP_CNT, &tmp); + + /* + * this counter is 16 bits wide, but the replay_depth.wire + * variable is only 8 bits + */ + if (tmp > 0xff) + tmp = 0xff; + pi->replay_depth.wire = tmp; + + if (resp_len) + *resp_len += sizeof(struct opa_port_info); + + return reply((struct ib_mad_hdr *)smp); +} + +/** + * get_pkeys - return the PKEY table + * @dd: the hfi1_ib device + * @port: the IB port number + * @pkeys: the pkey table is placed here + */ +static int get_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys) +{ + struct hfi1_pportdata *ppd = dd->pport + port - 1; + + memcpy(pkeys, ppd->pkeys, sizeof(ppd->pkeys)); + + return 0; +} + +static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u32 n_blocks_req = OPA_AM_NBLK(am); + u32 start_block = am & 0x7ff; + __be16 *p; + u16 *q; + int i; + u16 n_blocks_avail; + unsigned npkeys = hfi1_get_npkeys(dd); + size_t size; + + if (n_blocks_req == 0) { + pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n", + port, start_block, n_blocks_req); + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1; + + size = (n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE) * sizeof(u16); + + if (smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + if (start_block + n_blocks_req > n_blocks_avail || + n_blocks_req > OPA_NUM_PKEY_BLOCKS_PER_SMP) { + pr_warn("OPA Get PKey AM Invalid : s 0x%x; req 0x%x; " + "avail 0x%x; blk/smp 0x%lx\n", + start_block, n_blocks_req, n_blocks_avail, + OPA_NUM_PKEY_BLOCKS_PER_SMP); + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + p = (__be16 *)data; + q = (u16 *)data; + /* get the real pkeys if we are requesting the first block */ + if (start_block == 0) { + get_pkeys(dd, port, q); + for (i = 0; i < npkeys; i++) + p[i] = cpu_to_be16(q[i]); + if (resp_len) + *resp_len += size; + } else { + smp->status |= IB_SMP_INVALID_FIELD; + } + return reply((struct ib_mad_hdr *)smp); +} + +enum { + HFI_TRANSITION_DISALLOWED, + HFI_TRANSITION_IGNORED, + HFI_TRANSITION_ALLOWED, + HFI_TRANSITION_UNDEFINED, +}; + +/* + * Use shortened names to improve readability of + * {logical,physical}_state_transitions + */ +enum { + __D = HFI_TRANSITION_DISALLOWED, + __I = HFI_TRANSITION_IGNORED, + __A = HFI_TRANSITION_ALLOWED, + __U = HFI_TRANSITION_UNDEFINED, +}; + +/* + * IB_PORTPHYSSTATE_POLLING (2) through OPA_PORTPHYSSTATE_MAX (11) are + * represented in physical_state_transitions. + */ +#define __N_PHYSTATES (OPA_PORTPHYSSTATE_MAX - IB_PORTPHYSSTATE_POLLING + 1) + +/* + * Within physical_state_transitions, rows represent "old" states, + * columns "new" states, and physical_state_transitions.allowed[old][new] + * indicates if the transition from old state to new state is legal (see + * OPAg1v1, Table 6-4). + */ +static const struct { + u8 allowed[__N_PHYSTATES][__N_PHYSTATES]; +} physical_state_transitions = { + { + /* 2 3 4 5 6 7 8 9 10 11 */ + /* 2 */ { __A, __A, __D, __D, __D, __D, __D, __D, __D, __D }, + /* 3 */ { __A, __I, __D, __D, __D, __D, __D, __D, __D, __A }, + /* 4 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U }, + /* 5 */ { __A, __A, __D, __I, __D, __D, __D, __D, __D, __D }, + /* 6 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U }, + /* 7 */ { __D, __A, __D, __D, __D, __I, __D, __D, __D, __D }, + /* 8 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U }, + /* 9 */ { __I, __A, __D, __D, __D, __D, __D, __I, __D, __D }, + /*10 */ { __U, __U, __U, __U, __U, __U, __U, __U, __U, __U }, + /*11 */ { __D, __A, __D, __D, __D, __D, __D, __D, __D, __I }, + } +}; + +/* + * IB_PORT_DOWN (1) through IB_PORT_ACTIVE_DEFER (5) are represented + * logical_state_transitions + */ + +#define __N_LOGICAL_STATES (IB_PORT_ACTIVE_DEFER - IB_PORT_DOWN + 1) + +/* + * Within logical_state_transitions rows represent "old" states, + * columns "new" states, and logical_state_transitions.allowed[old][new] + * indicates if the transition from old state to new state is legal (see + * OPAg1v1, Table 9-12). + */ +static const struct { + u8 allowed[__N_LOGICAL_STATES][__N_LOGICAL_STATES]; +} logical_state_transitions = { + { + /* 1 2 3 4 5 */ + /* 1 */ { __I, __D, __D, __D, __U}, + /* 2 */ { __D, __I, __A, __D, __U}, + /* 3 */ { __D, __D, __I, __A, __U}, + /* 4 */ { __D, __D, __I, __I, __U}, + /* 5 */ { __U, __U, __U, __U, __U}, + } +}; + +static int logical_transition_allowed(int old, int new) +{ + if (old < IB_PORT_NOP || old > IB_PORT_ACTIVE_DEFER || + new < IB_PORT_NOP || new > IB_PORT_ACTIVE_DEFER) { + pr_warn("invalid logical state(s) (old %d new %d)\n", + old, new); + return HFI_TRANSITION_UNDEFINED; + } + + if (new == IB_PORT_NOP) + return HFI_TRANSITION_ALLOWED; /* always allowed */ + + /* adjust states for indexing into logical_state_transitions */ + old -= IB_PORT_DOWN; + new -= IB_PORT_DOWN; + + if (old < 0 || new < 0) + return HFI_TRANSITION_UNDEFINED; + return logical_state_transitions.allowed[old][new]; +} + +static int physical_transition_allowed(int old, int new) +{ + if (old < IB_PORTPHYSSTATE_NOP || old > OPA_PORTPHYSSTATE_MAX || + new < IB_PORTPHYSSTATE_NOP || new > OPA_PORTPHYSSTATE_MAX) { + pr_warn("invalid physical state(s) (old %d new %d)\n", + old, new); + return HFI_TRANSITION_UNDEFINED; + } + + if (new == IB_PORTPHYSSTATE_NOP) + return HFI_TRANSITION_ALLOWED; /* always allowed */ + + /* adjust states for indexing into physical_state_transitions */ + old -= IB_PORTPHYSSTATE_POLLING; + new -= IB_PORTPHYSSTATE_POLLING; + + if (old < 0 || new < 0) + return HFI_TRANSITION_UNDEFINED; + return physical_state_transitions.allowed[old][new]; +} + +static int port_states_transition_allowed(struct hfi1_pportdata *ppd, + u32 logical_new, u32 physical_new) +{ + u32 physical_old = driver_pstate(ppd); + u32 logical_old = driver_lstate(ppd); + int ret, logical_allowed, physical_allowed; + + ret = logical_transition_allowed(logical_old, logical_new); + logical_allowed = ret; + + if (ret == HFI_TRANSITION_DISALLOWED || + ret == HFI_TRANSITION_UNDEFINED) { + pr_warn("invalid logical state transition %s -> %s\n", + opa_lstate_name(logical_old), + opa_lstate_name(logical_new)); + return ret; + } + + ret = physical_transition_allowed(physical_old, physical_new); + physical_allowed = ret; + + if (ret == HFI_TRANSITION_DISALLOWED || + ret == HFI_TRANSITION_UNDEFINED) { + pr_warn("invalid physical state transition %s -> %s\n", + opa_pstate_name(physical_old), + opa_pstate_name(physical_new)); + return ret; + } + + if (logical_allowed == HFI_TRANSITION_IGNORED && + physical_allowed == HFI_TRANSITION_IGNORED) + return HFI_TRANSITION_IGNORED; + + /* + * A change request of Physical Port State from + * 'Offline' to 'Polling' should be ignored. + */ + if ((physical_old == OPA_PORTPHYSSTATE_OFFLINE) && + (physical_new == IB_PORTPHYSSTATE_POLLING)) + return HFI_TRANSITION_IGNORED; + + /* + * Either physical_allowed or logical_allowed is + * HFI_TRANSITION_ALLOWED. + */ + return HFI_TRANSITION_ALLOWED; +} + +static int set_port_states(struct hfi1_pportdata *ppd, struct opa_smp *smp, + u32 logical_state, u32 phys_state, int local_mad) +{ + struct hfi1_devdata *dd = ppd->dd; + u32 link_state; + int ret; + + ret = port_states_transition_allowed(ppd, logical_state, phys_state); + if (ret == HFI_TRANSITION_DISALLOWED || + ret == HFI_TRANSITION_UNDEFINED) { + /* error message emitted above */ + smp->status |= IB_SMP_INVALID_FIELD; + return 0; + } + + if (ret == HFI_TRANSITION_IGNORED) + return 0; + + if ((phys_state != IB_PORTPHYSSTATE_NOP) && + !(logical_state == IB_PORT_DOWN || + logical_state == IB_PORT_NOP)){ + pr_warn("SubnSet(OPA_PortInfo) port state invalid: logical_state 0x%x physical_state 0x%x\n", + logical_state, phys_state); + smp->status |= IB_SMP_INVALID_FIELD; + } + + /* + * Logical state changes are summarized in OPAv1g1 spec., + * Table 9-12; physical state changes are summarized in + * OPAv1g1 spec., Table 6.4. + */ + switch (logical_state) { + case IB_PORT_NOP: + if (phys_state == IB_PORTPHYSSTATE_NOP) + break; + /* FALLTHROUGH */ + case IB_PORT_DOWN: + if (phys_state == IB_PORTPHYSSTATE_NOP) { + link_state = HLS_DN_DOWNDEF; + } else if (phys_state == IB_PORTPHYSSTATE_POLLING) { + link_state = HLS_DN_POLL; + set_link_down_reason(ppd, OPA_LINKDOWN_REASON_FM_BOUNCE, + 0, OPA_LINKDOWN_REASON_FM_BOUNCE); + } else if (phys_state == IB_PORTPHYSSTATE_DISABLED) { + link_state = HLS_DN_DISABLE; + } else { + pr_warn("SubnSet(OPA_PortInfo) invalid physical state 0x%x\n", + phys_state); + smp->status |= IB_SMP_INVALID_FIELD; + break; + } + + if ((link_state == HLS_DN_POLL || + link_state == HLS_DN_DOWNDEF)) { + /* + * Going to poll. No matter what the current state, + * always move offline first, then tune and start the + * link. This correctly handles a FM link bounce and + * a link enable. Going offline is a no-op if already + * offline. + */ + set_link_state(ppd, HLS_DN_OFFLINE); + start_link(ppd); + } else { + set_link_state(ppd, link_state); + } + if (link_state == HLS_DN_DISABLE && + (ppd->offline_disabled_reason > + HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) || + ppd->offline_disabled_reason == + HFI1_ODR_MASK(OPA_LINKDOWN_REASON_NONE))) + ppd->offline_disabled_reason = + HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED); + /* + * Don't send a reply if the response would be sent + * through the disabled port. + */ + if (link_state == HLS_DN_DISABLE && !local_mad) + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + break; + case IB_PORT_ARMED: + ret = set_link_state(ppd, HLS_UP_ARMED); + if (!ret) + send_idle_sma(dd, SMA_IDLE_ARM); + break; + case IB_PORT_ACTIVE: + if (ppd->neighbor_normal) { + ret = set_link_state(ppd, HLS_UP_ACTIVE); + if (ret == 0) + send_idle_sma(dd, SMA_IDLE_ACTIVE); + } else { + pr_warn("SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n"); + smp->status |= IB_SMP_INVALID_FIELD; + } + break; + default: + pr_warn("SubnSet(OPA_PortInfo) invalid logical state 0x%x\n", + logical_state); + smp->status |= IB_SMP_INVALID_FIELD; + } + + return 0; +} + +/** + * subn_set_opa_portinfo - set port information + * @smp: the incoming SM packet + * @ibdev: the infiniband device + * @port: the port on the device + * + */ +static int __subn_set_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len, int local_mad) +{ + struct opa_port_info *pi = (struct opa_port_info *)data; + struct ib_event event; + struct hfi1_devdata *dd; + struct hfi1_pportdata *ppd; + struct hfi1_ibport *ibp; + u8 clientrereg; + unsigned long flags; + u32 smlid; + u32 lid; + u8 ls_old, ls_new, ps_new; + u8 vls; + u8 msl; + u8 crc_enabled; + u16 lse, lwe, mtu; + u32 num_ports = OPA_AM_NPORT(am); + u32 start_of_sm_config = OPA_AM_START_SM_CFG(am); + int ret, i, invalid = 0, call_set_mtu = 0; + int call_link_downgrade_policy = 0; + + if (num_ports != 1 || + smp_length_check(sizeof(*pi), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + lid = be32_to_cpu(pi->lid); + if (lid & 0xFF000000) { + pr_warn("OPA_PortInfo lid out of range: %X\n", lid); + smp->status |= IB_SMP_INVALID_FIELD; + goto get_only; + } + + + smlid = be32_to_cpu(pi->sm_lid); + if (smlid & 0xFF000000) { + pr_warn("OPA_PortInfo SM lid out of range: %X\n", smlid); + smp->status |= IB_SMP_INVALID_FIELD; + goto get_only; + } + + clientrereg = (pi->clientrereg_subnettimeout & + OPA_PI_MASK_CLIENT_REREGISTER); + + dd = dd_from_ibdev(ibdev); + /* IB numbers ports from 1, hw from 0 */ + ppd = dd->pport + (port - 1); + ibp = &ppd->ibport_data; + event.device = ibdev; + event.element.port_num = port; + + ls_old = driver_lstate(ppd); + + ibp->rvp.mkey = pi->mkey; + if (ibp->rvp.gid_prefix != pi->subnet_prefix) { + ibp->rvp.gid_prefix = pi->subnet_prefix; + event.event = IB_EVENT_GID_CHANGE; + ib_dispatch_event(&event); + } + ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period); + + /* Must be a valid unicast LID address. */ + if ((lid == 0 && ls_old > IB_PORT_INIT) || + (hfi1_is_16B_mcast(lid))) { + smp->status |= IB_SMP_INVALID_FIELD; + pr_warn("SubnSet(OPA_PortInfo) lid invalid 0x%x\n", + lid); + } else if (ppd->lid != lid || + ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) { + if (ppd->lid != lid) + hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LID_CHANGE_BIT); + if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC)) + hfi1_set_uevent_bits(ppd, _HFI1_EVENT_LMC_CHANGE_BIT); + hfi1_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC); + event.event = IB_EVENT_LID_CHANGE; + ib_dispatch_event(&event); + + if (HFI1_PORT_GUID_INDEX + 1 < HFI1_GUIDS_PER_PORT) { + /* Manufacture GID from LID to support extended + * addresses + */ + ppd->guids[HFI1_PORT_GUID_INDEX + 1] = + be64_to_cpu(OPA_MAKE_ID(lid)); + event.event = IB_EVENT_GID_CHANGE; + ib_dispatch_event(&event); + } + } + + msl = pi->smsl & OPA_PI_MASK_SMSL; + if (pi->partenforce_filterraw & OPA_PI_MASK_LINKINIT_REASON) + ppd->linkinit_reason = + (pi->partenforce_filterraw & + OPA_PI_MASK_LINKINIT_REASON); + + /* Must be a valid unicast LID address. */ + if ((smlid == 0 && ls_old > IB_PORT_INIT) || + (hfi1_is_16B_mcast(smlid))) { + smp->status |= IB_SMP_INVALID_FIELD; + pr_warn("SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid); + } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) { + pr_warn("SubnSet(OPA_PortInfo) smlid 0x%x\n", smlid); + spin_lock_irqsave(&ibp->rvp.lock, flags); + if (ibp->rvp.sm_ah) { + if (smlid != ibp->rvp.sm_lid) + hfi1_modify_qp0_ah(ibp, ibp->rvp.sm_ah, 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); + } + + if (pi->link_down_reason == 0) { + ppd->local_link_down_reason.sma = 0; + ppd->local_link_down_reason.latest = 0; + } + + if (pi->neigh_link_down_reason == 0) { + ppd->neigh_link_down_reason.sma = 0; + ppd->neigh_link_down_reason.latest = 0; + } + + ppd->sm_trap_qp = be32_to_cpu(pi->sm_trap_qp); + ppd->sa_qp = be32_to_cpu(pi->sa_qp); + + ppd->port_error_action = be32_to_cpu(pi->port_error_action); + lwe = be16_to_cpu(pi->link_width.enabled); + if (lwe) { + if (lwe == OPA_LINK_WIDTH_RESET || + lwe == OPA_LINK_WIDTH_RESET_OLD) + set_link_width_enabled(ppd, ppd->link_width_supported); + else if ((lwe & ~ppd->link_width_supported) == 0) + set_link_width_enabled(ppd, lwe); + else + smp->status |= IB_SMP_INVALID_FIELD; + } + lwe = be16_to_cpu(pi->link_width_downgrade.enabled); + /* LWD.E is always applied - 0 means "disabled" */ + if (lwe == OPA_LINK_WIDTH_RESET || + lwe == OPA_LINK_WIDTH_RESET_OLD) { + set_link_width_downgrade_enabled(ppd, + ppd-> + link_width_downgrade_supported + ); + } else if ((lwe & ~ppd->link_width_downgrade_supported) == 0) { + /* only set and apply if something changed */ + if (lwe != ppd->link_width_downgrade_enabled) { + set_link_width_downgrade_enabled(ppd, lwe); + call_link_downgrade_policy = 1; + } + } else { + smp->status |= IB_SMP_INVALID_FIELD; + } + lse = be16_to_cpu(pi->link_speed.enabled); + if (lse) { + if (lse & be16_to_cpu(pi->link_speed.supported)) + set_link_speed_enabled(ppd, lse); + else + smp->status |= IB_SMP_INVALID_FIELD; + } + + ibp->rvp.mkeyprot = + (pi->mkeyprotect_lmc & OPA_PI_MASK_MKEY_PROT_BIT) >> 6; + ibp->rvp.vl_high_limit = be16_to_cpu(pi->vl.high_limit) & 0xFF; + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_VL_HIGH_LIMIT, + ibp->rvp.vl_high_limit); + + if (ppd->vls_supported / 2 > ARRAY_SIZE(pi->neigh_mtu.pvlx_to_mtu) || + ppd->vls_supported > ARRAY_SIZE(dd->vld)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + for (i = 0; i < ppd->vls_supported; i++) { + if ((i % 2) == 0) + mtu = enum_to_mtu((pi->neigh_mtu.pvlx_to_mtu[i / 2] >> + 4) & 0xF); + else + mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[i / 2] & + 0xF); + if (mtu == 0xffff) { + pr_warn("SubnSet(OPA_PortInfo) mtu invalid %d (0x%x)\n", + mtu, + (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF); + smp->status |= IB_SMP_INVALID_FIELD; + mtu = hfi1_max_mtu; /* use a valid MTU */ + } + if (dd->vld[i].mtu != mtu) { + dd_dev_info(dd, + "MTU change on vl %d from %d to %d\n", + i, dd->vld[i].mtu, mtu); + dd->vld[i].mtu = mtu; + call_set_mtu++; + } + } + /* As per OPAV1 spec: VL15 must support and be configured + * for operation with a 2048 or larger MTU. + */ + mtu = enum_to_mtu(pi->neigh_mtu.pvlx_to_mtu[15 / 2] & 0xF); + if (mtu < 2048 || mtu == 0xffff) + mtu = 2048; + if (dd->vld[15].mtu != mtu) { + dd_dev_info(dd, + "MTU change on vl 15 from %d to %d\n", + dd->vld[15].mtu, mtu); + dd->vld[15].mtu = mtu; + call_set_mtu++; + } + if (call_set_mtu) + set_mtu(ppd); + + /* Set operational VLs */ + vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL; + if (vls) { + if (vls > ppd->vls_supported) { + pr_warn("SubnSet(OPA_PortInfo) VL's supported invalid %d\n", + pi->operational_vls); + smp->status |= IB_SMP_INVALID_FIELD; + } else { + if (hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_OP_VLS, + vls) == -EINVAL) + smp->status |= IB_SMP_INVALID_FIELD; + } + } + + if (pi->mkey_violations == 0) + ibp->rvp.mkey_violations = 0; + + if (pi->pkey_violations == 0) + ibp->rvp.pkey_violations = 0; + + if (pi->qkey_violations == 0) + ibp->rvp.qkey_violations = 0; + + ibp->rvp.subnet_timeout = + pi->clientrereg_subnettimeout & OPA_PI_MASK_SUBNET_TIMEOUT; + + crc_enabled = be16_to_cpu(pi->port_ltp_crc_mode); + crc_enabled >>= 4; + crc_enabled &= 0xf; + + if (crc_enabled != 0) + ppd->port_crc_mode_enabled = port_ltp_to_cap(crc_enabled); + + ppd->is_active_optimize_enabled = + !!(be16_to_cpu(pi->port_mode) + & OPA_PI_MASK_PORT_ACTIVE_OPTOMIZE); + + ls_new = pi->port_states.portphysstate_portstate & + OPA_PI_MASK_PORT_STATE; + ps_new = (pi->port_states.portphysstate_portstate & + OPA_PI_MASK_PORT_PHYSICAL_STATE) >> 4; + + if (ls_old == IB_PORT_INIT) { + if (start_of_sm_config) { + if (ls_new == ls_old || (ls_new == IB_PORT_ARMED)) + ppd->is_sm_config_started = 1; + } else if (ls_new == IB_PORT_ARMED) { + if (ppd->is_sm_config_started == 0) { + invalid = 1; + smp->status |= IB_SMP_INVALID_FIELD; + } + } + } + + /* Handle CLIENT_REREGISTER event b/c SM asked us for it */ + if (clientrereg) { + event.event = IB_EVENT_CLIENT_REREGISTER; + ib_dispatch_event(&event); + } + + /* + * 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. + */ + + if (!invalid) { + ret = set_port_states(ppd, smp, ls_new, ps_new, local_mad); + if (ret) + return ret; + } + + ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len, + max_len); + + /* restore re-reg bit per o14-12.2.1 */ + pi->clientrereg_subnettimeout |= clientrereg; + + /* + * Apply the new link downgrade policy. This may result in a link + * bounce. Do this after everything else so things are settled. + * Possible problem: if setting the port state above fails, then + * the policy change is not applied. + */ + if (call_link_downgrade_policy) + apply_link_downgrade_policy(ppd, 0); + + return ret; + +get_only: + return __subn_get_opa_portinfo(smp, am, data, ibdev, port, resp_len, + max_len); +} + +/** + * set_pkeys - set the PKEY table for ctxt 0 + * @dd: the hfi1_ib device + * @port: the IB port number + * @pkeys: the PKEY table + */ +static int set_pkeys(struct hfi1_devdata *dd, u8 port, u16 *pkeys) +{ + struct hfi1_pportdata *ppd; + int i; + int changed = 0; + int update_includes_mgmt_partition = 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); + /* + * If the update does not include the management pkey, don't do it. + */ + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { + if (pkeys[i] == LIM_MGMT_P_KEY) { + update_includes_mgmt_partition = 1; + break; + } + } + + if (!update_includes_mgmt_partition) + return 1; + + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { + u16 key = pkeys[i]; + u16 okey = ppd->pkeys[i]; + + if (key == okey) + continue; + /* + * The SM gives us the complete PKey table. We have + * to ensure that we put the PKeys in the matching + * slots. + */ + ppd->pkeys[i] = key; + changed = 1; + } + + if (changed) { + (void)hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_PKEYS, 0); + hfi1_event_pkey_change(dd, port); + } + + return 0; +} + +static int __subn_set_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u32 n_blocks_sent = OPA_AM_NBLK(am); + u32 start_block = am & 0x7ff; + u16 *p = (u16 *)data; + __be16 *q = (__be16 *)data; + int i; + u16 n_blocks_avail; + unsigned npkeys = hfi1_get_npkeys(dd); + u32 size = 0; + + if (n_blocks_sent == 0) { + pr_warn("OPA Get PKey AM Invalid : P = %d; B = 0x%x; N = 0x%x\n", + port, start_block, n_blocks_sent); + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + n_blocks_avail = (u16)(npkeys / OPA_PARTITION_TABLE_BLK_SIZE) + 1; + + size = sizeof(u16) * (n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE); + + if (smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + if (start_block + n_blocks_sent > n_blocks_avail || + n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP) { + pr_warn("OPA Set PKey AM Invalid : s 0x%x; req 0x%x; avail 0x%x; blk/smp 0x%lx\n", + start_block, n_blocks_sent, n_blocks_avail, + OPA_NUM_PKEY_BLOCKS_PER_SMP); + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE; i++) + p[i] = be16_to_cpu(q[i]); + + if (start_block == 0 && set_pkeys(dd, port, p) != 0) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + return __subn_get_opa_pkeytable(smp, am, data, ibdev, port, resp_len, + max_len); +} + +#define ILLEGAL_VL 12 +/* + * filter_sc2vlt changes mappings to VL15 to ILLEGAL_VL (except + * for SC15, which must map to VL15). If we don't remap things this + * way it is possible for VL15 counters to increment when we try to + * send on a SC which is mapped to an invalid VL. + * When getting the table convert ILLEGAL_VL back to VL15. + */ +static void filter_sc2vlt(void *data, bool set) +{ + int i; + u8 *pd = data; + + for (i = 0; i < OPA_MAX_SCS; i++) { + if (i == 15) + continue; + + if (set) { + if ((pd[i] & 0x1f) == 0xf) + pd[i] = ILLEGAL_VL; + } else { + if ((pd[i] & 0x1f) == ILLEGAL_VL) + pd[i] = 0xf; + } + } +} + +static int set_sc2vlt_tables(struct hfi1_devdata *dd, void *data) +{ + u64 *val = data; + + filter_sc2vlt(data, true); + + write_csr(dd, SEND_SC2VLT0, *val++); + write_csr(dd, SEND_SC2VLT1, *val++); + write_csr(dd, SEND_SC2VLT2, *val++); + write_csr(dd, SEND_SC2VLT3, *val++); + write_seqlock_irq(&dd->sc2vl_lock); + memcpy(dd->sc2vl, data, sizeof(dd->sc2vl)); + write_sequnlock_irq(&dd->sc2vl_lock); + return 0; +} + +static int get_sc2vlt_tables(struct hfi1_devdata *dd, void *data) +{ + u64 *val = (u64 *)data; + + *val++ = read_csr(dd, SEND_SC2VLT0); + *val++ = read_csr(dd, SEND_SC2VLT1); + *val++ = read_csr(dd, SEND_SC2VLT2); + *val++ = read_csr(dd, SEND_SC2VLT3); + + filter_sc2vlt((u64 *)data, false); + return 0; +} + +static int __subn_get_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + u8 *p = data; + size_t size = ARRAY_SIZE(ibp->sl_to_sc); /* == 32 */ + unsigned i; + + if (am || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++) + *p++ = ibp->sl_to_sc[i]; + + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_sl_to_sc(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + u8 *p = data; + size_t size = ARRAY_SIZE(ibp->sl_to_sc); + int i; + u8 sc; + + if (am || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++) { + sc = *p++; + if (ibp->sl_to_sc[i] != sc) { + ibp->sl_to_sc[i] = sc; + + /* Put all stale qps into error state */ + hfi1_error_port_qps(ibp, i); + } + } + + return __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int __subn_get_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + u8 *p = data; + size_t size = ARRAY_SIZE(ibp->sc_to_sl); /* == 32 */ + unsigned i; + + if (am || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++) + *p++ = ibp->sc_to_sl[i]; + + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_sc_to_sl(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + size_t size = ARRAY_SIZE(ibp->sc_to_sl); + u8 *p = data; + int i; + + if (am || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++) + ibp->sc_to_sl[i] = *p++; + + return __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int __subn_get_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + u32 n_blocks = OPA_AM_NBLK(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + void *vp = (void *)data; + size_t size = 4 * sizeof(u64); + + if (n_blocks != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + get_sc2vlt_tables(dd, vp); + + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_sc_to_vlt(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + u32 n_blocks = OPA_AM_NBLK(am); + int async_update = OPA_AM_ASYNC(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + void *vp = (void *)data; + struct hfi1_pportdata *ppd; + int lstate; + /* + * set_sc2vlt_tables writes the information contained in *data + * to four 64-bit registers SendSC2VLt[0-3]. We need to make + * sure *max_len is not greater than the total size of the four + * SendSC2VLt[0-3] registers. + */ + size_t size = 4 * sizeof(u64); + + if (n_blocks != 1 || async_update || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* IB numbers ports from 1, hw from 0 */ + ppd = dd->pport + (port - 1); + lstate = driver_lstate(ppd); + /* + * it's known that async_update is 0 by this point, but include + * the explicit check for clarity + */ + if (!async_update && + (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + set_sc2vlt_tables(dd, vp); + + return __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int __subn_get_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + u32 n_blocks = OPA_AM_NPORT(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_pportdata *ppd; + void *vp = (void *)data; + int size = sizeof(struct sc2vlnt); + + if (n_blocks != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ppd = dd->pport + (port - 1); + + fm_get_table(ppd, FM_TBL_SC2VLNT, vp); + + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_sc_to_vlnt(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + u32 n_blocks = OPA_AM_NPORT(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_pportdata *ppd; + void *vp = (void *)data; + int lstate; + int size = sizeof(struct sc2vlnt); + + if (n_blocks != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* IB numbers ports from 1, hw from 0 */ + ppd = dd->pport + (port - 1); + lstate = driver_lstate(ppd); + if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ppd = dd->pport + (port - 1); + + fm_set_table(ppd, FM_TBL_SC2VLNT, vp); + + return __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port, + resp_len, max_len); +} + +static int __subn_get_opa_psi(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + u32 nports = OPA_AM_NPORT(am); + u32 start_of_sm_config = OPA_AM_START_SM_CFG(am); + u32 lstate; + struct hfi1_ibport *ibp; + struct hfi1_pportdata *ppd; + struct opa_port_state_info *psi = (struct opa_port_state_info *)data; + + if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ibp = to_iport(ibdev, port); + ppd = ppd_from_ibp(ibp); + + lstate = driver_lstate(ppd); + + if (start_of_sm_config && (lstate == IB_PORT_INIT)) + ppd->is_sm_config_started = 1; + + psi->port_states.ledenable_offlinereason = ppd->neighbor_normal << 4; + psi->port_states.ledenable_offlinereason |= + ppd->is_sm_config_started << 5; + psi->port_states.ledenable_offlinereason |= + ppd->offline_disabled_reason; + + psi->port_states.portphysstate_portstate = + (driver_pstate(ppd) << 4) | (lstate & 0xf); + psi->link_width_downgrade_tx_active = + cpu_to_be16(ppd->link_width_downgrade_tx_active); + psi->link_width_downgrade_rx_active = + cpu_to_be16(ppd->link_width_downgrade_rx_active); + if (resp_len) + *resp_len += sizeof(struct opa_port_state_info); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_psi(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len, int local_mad) +{ + u32 nports = OPA_AM_NPORT(am); + u32 start_of_sm_config = OPA_AM_START_SM_CFG(am); + u32 ls_old; + u8 ls_new, ps_new; + struct hfi1_ibport *ibp; + struct hfi1_pportdata *ppd; + struct opa_port_state_info *psi = (struct opa_port_state_info *)data; + int ret, invalid = 0; + + if (nports != 1 || smp_length_check(sizeof(*psi), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ibp = to_iport(ibdev, port); + ppd = ppd_from_ibp(ibp); + + ls_old = driver_lstate(ppd); + + ls_new = port_states_to_logical_state(&psi->port_states); + ps_new = port_states_to_phys_state(&psi->port_states); + + if (ls_old == IB_PORT_INIT) { + if (start_of_sm_config) { + if (ls_new == ls_old || (ls_new == IB_PORT_ARMED)) + ppd->is_sm_config_started = 1; + } else if (ls_new == IB_PORT_ARMED) { + if (ppd->is_sm_config_started == 0) { + invalid = 1; + smp->status |= IB_SMP_INVALID_FIELD; + } + } + } + + if (!invalid) { + ret = set_port_states(ppd, smp, ls_new, ps_new, local_mad); + if (ret) + return ret; + } + + return __subn_get_opa_psi(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int __subn_get_opa_cable_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u32 addr = OPA_AM_CI_ADDR(am); + u32 len = OPA_AM_CI_LEN(am) + 1; + int ret; + + if (dd->pport->port_type != PORT_TYPE_QSFP || + smp_length_check(len, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + +#define __CI_PAGE_SIZE BIT(7) /* 128 bytes */ +#define __CI_PAGE_MASK ~(__CI_PAGE_SIZE - 1) +#define __CI_PAGE_NUM(a) ((a) & __CI_PAGE_MASK) + + /* + * check that addr is within spec, and + * addr and (addr + len - 1) are on the same "page" + */ + if (addr >= 4096 || + (__CI_PAGE_NUM(addr) != __CI_PAGE_NUM(addr + len - 1))) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ret = get_cable_info(dd, port, addr, len, data); + + if (ret == -ENODEV) { + smp->status |= IB_SMP_UNSUP_METH_ATTR; + return reply((struct ib_mad_hdr *)smp); + } + + /* The address range for the CableInfo SMA query is wider than the + * memory available on the QSFP cable. We want to return a valid + * response, albeit zeroed out, for address ranges beyond available + * memory but that are within the CableInfo query spec + */ + if (ret < 0 && ret != -ERANGE) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + if (resp_len) + *resp_len += len; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_bct(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, u32 *resp_len, + u32 max_len) +{ + u32 num_ports = OPA_AM_NPORT(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_pportdata *ppd; + struct buffer_control *p = (struct buffer_control *)data; + int size = sizeof(struct buffer_control); + + if (num_ports != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + ppd = dd->pport + (port - 1); + fm_get_table(ppd, FM_TBL_BUFFER_CONTROL, p); + trace_bct_get(dd, p); + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_bct(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, u32 *resp_len, + u32 max_len) +{ + u32 num_ports = OPA_AM_NPORT(am); + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_pportdata *ppd; + struct buffer_control *p = (struct buffer_control *)data; + + if (num_ports != 1 || smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + ppd = dd->pport + (port - 1); + trace_bct_set(dd, p); + if (fm_set_table(ppd, FM_TBL_BUFFER_CONTROL, p) < 0) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + return __subn_get_opa_bct(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int __subn_get_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); + u32 num_ports = OPA_AM_NPORT(am); + u8 section = (am & 0x00ff0000) >> 16; + u8 *p = data; + int size = 256; + + if (num_ports != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + switch (section) { + case OPA_VLARB_LOW_ELEMENTS: + fm_get_table(ppd, FM_TBL_VL_LOW_ARB, p); + break; + case OPA_VLARB_HIGH_ELEMENTS: + fm_get_table(ppd, FM_TBL_VL_HIGH_ARB, p); + break; + case OPA_VLARB_PREEMPT_ELEMENTS: + fm_get_table(ppd, FM_TBL_VL_PREEMPT_ELEMS, p); + break; + case OPA_VLARB_PREEMPT_MATRIX: + fm_get_table(ppd, FM_TBL_VL_PREEMPT_MATRIX, p); + break; + default: + pr_warn("OPA SubnGet(VL Arb) AM Invalid : 0x%x\n", + be32_to_cpu(smp->attr_mod)); + smp->status |= IB_SMP_INVALID_FIELD; + size = 0; + break; + } + + if (size > 0 && resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_vl_arb(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); + u32 num_ports = OPA_AM_NPORT(am); + u8 section = (am & 0x00ff0000) >> 16; + u8 *p = data; + int size = 256; + + if (num_ports != 1 || smp_length_check(size, max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + switch (section) { + case OPA_VLARB_LOW_ELEMENTS: + (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p); + break; + case OPA_VLARB_HIGH_ELEMENTS: + (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p); + break; + /* + * neither OPA_VLARB_PREEMPT_ELEMENTS, or OPA_VLARB_PREEMPT_MATRIX + * can be changed from the default values + */ + case OPA_VLARB_PREEMPT_ELEMENTS: + /* FALLTHROUGH */ + case OPA_VLARB_PREEMPT_MATRIX: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + break; + default: + pr_warn("OPA SubnSet(VL Arb) AM Invalid : 0x%x\n", + be32_to_cpu(smp->attr_mod)); + smp->status |= IB_SMP_INVALID_FIELD; + break; + } + + return __subn_get_opa_vl_arb(smp, am, data, ibdev, port, resp_len, + max_len); +} + +struct opa_pma_mad { + struct ib_mad_hdr mad_hdr; + u8 data[2024]; +} __packed; + +struct opa_port_status_req { + __u8 port_num; + __u8 reserved[3]; + __be32 vl_select_mask; +}; + +#define VL_MASK_ALL 0x00000000000080ffUL + +struct opa_port_status_rsp { + __u8 port_num; + __u8 reserved[3]; + __be32 vl_select_mask; + + /* Data counters */ + __be64 port_xmit_data; + __be64 port_rcv_data; + __be64 port_xmit_pkts; + __be64 port_rcv_pkts; + __be64 port_multicast_xmit_pkts; + __be64 port_multicast_rcv_pkts; + __be64 port_xmit_wait; + __be64 sw_port_congestion; + __be64 port_rcv_fecn; + __be64 port_rcv_becn; + __be64 port_xmit_time_cong; + __be64 port_xmit_wasted_bw; + __be64 port_xmit_wait_data; + __be64 port_rcv_bubble; + __be64 port_mark_fecn; + /* Error counters */ + __be64 port_rcv_constraint_errors; + __be64 port_rcv_switch_relay_errors; + __be64 port_xmit_discards; + __be64 port_xmit_constraint_errors; + __be64 port_rcv_remote_physical_errors; + __be64 local_link_integrity_errors; + __be64 port_rcv_errors; + __be64 excessive_buffer_overruns; + __be64 fm_config_errors; + __be32 link_error_recovery; + __be32 link_downed; + u8 uncorrectable_errors; + + u8 link_quality_indicator; /* 5res, 3bit */ + u8 res2[6]; + struct _vls_pctrs { + /* per-VL Data counters */ + __be64 port_vl_xmit_data; + __be64 port_vl_rcv_data; + __be64 port_vl_xmit_pkts; + __be64 port_vl_rcv_pkts; + __be64 port_vl_xmit_wait; + __be64 sw_port_vl_congestion; + __be64 port_vl_rcv_fecn; + __be64 port_vl_rcv_becn; + __be64 port_xmit_time_cong; + __be64 port_vl_xmit_wasted_bw; + __be64 port_vl_xmit_wait_data; + __be64 port_vl_rcv_bubble; + __be64 port_vl_mark_fecn; + __be64 port_vl_xmit_discards; + } vls[0]; /* real array size defined by # bits set in vl_select_mask */ +}; + +enum counter_selects { + CS_PORT_XMIT_DATA = (1 << 31), + CS_PORT_RCV_DATA = (1 << 30), + CS_PORT_XMIT_PKTS = (1 << 29), + CS_PORT_RCV_PKTS = (1 << 28), + CS_PORT_MCAST_XMIT_PKTS = (1 << 27), + CS_PORT_MCAST_RCV_PKTS = (1 << 26), + CS_PORT_XMIT_WAIT = (1 << 25), + CS_SW_PORT_CONGESTION = (1 << 24), + CS_PORT_RCV_FECN = (1 << 23), + CS_PORT_RCV_BECN = (1 << 22), + CS_PORT_XMIT_TIME_CONG = (1 << 21), + CS_PORT_XMIT_WASTED_BW = (1 << 20), + CS_PORT_XMIT_WAIT_DATA = (1 << 19), + CS_PORT_RCV_BUBBLE = (1 << 18), + CS_PORT_MARK_FECN = (1 << 17), + CS_PORT_RCV_CONSTRAINT_ERRORS = (1 << 16), + CS_PORT_RCV_SWITCH_RELAY_ERRORS = (1 << 15), + CS_PORT_XMIT_DISCARDS = (1 << 14), + CS_PORT_XMIT_CONSTRAINT_ERRORS = (1 << 13), + CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS = (1 << 12), + CS_LOCAL_LINK_INTEGRITY_ERRORS = (1 << 11), + CS_PORT_RCV_ERRORS = (1 << 10), + CS_EXCESSIVE_BUFFER_OVERRUNS = (1 << 9), + CS_FM_CONFIG_ERRORS = (1 << 8), + CS_LINK_ERROR_RECOVERY = (1 << 7), + CS_LINK_DOWNED = (1 << 6), + CS_UNCORRECTABLE_ERRORS = (1 << 5), +}; + +struct opa_clear_port_status { + __be64 port_select_mask[4]; + __be32 counter_select_mask; +}; + +struct opa_aggregate { + __be16 attr_id; + __be16 err_reqlength; /* 1 bit, 8 res, 7 bit */ + __be32 attr_mod; + u8 data[0]; +}; + +#define MSK_LLI 0x000000f0 +#define MSK_LLI_SFT 4 +#define MSK_LER 0x0000000f +#define MSK_LER_SFT 0 +#define ADD_LLI 8 +#define ADD_LER 2 + +/* Request contains first three fields, response contains those plus the rest */ +struct opa_port_data_counters_msg { + __be64 port_select_mask[4]; + __be32 vl_select_mask; + __be32 resolution; + + /* Response fields follow */ + struct _port_dctrs { + u8 port_number; + u8 reserved2[3]; + __be32 link_quality_indicator; /* 29res, 3bit */ + + /* Data counters */ + __be64 port_xmit_data; + __be64 port_rcv_data; + __be64 port_xmit_pkts; + __be64 port_rcv_pkts; + __be64 port_multicast_xmit_pkts; + __be64 port_multicast_rcv_pkts; + __be64 port_xmit_wait; + __be64 sw_port_congestion; + __be64 port_rcv_fecn; + __be64 port_rcv_becn; + __be64 port_xmit_time_cong; + __be64 port_xmit_wasted_bw; + __be64 port_xmit_wait_data; + __be64 port_rcv_bubble; + __be64 port_mark_fecn; + + __be64 port_error_counter_summary; + /* Sum of error counts/port */ + + struct _vls_dctrs { + /* per-VL Data counters */ + __be64 port_vl_xmit_data; + __be64 port_vl_rcv_data; + __be64 port_vl_xmit_pkts; + __be64 port_vl_rcv_pkts; + __be64 port_vl_xmit_wait; + __be64 sw_port_vl_congestion; + __be64 port_vl_rcv_fecn; + __be64 port_vl_rcv_becn; + __be64 port_xmit_time_cong; + __be64 port_vl_xmit_wasted_bw; + __be64 port_vl_xmit_wait_data; + __be64 port_vl_rcv_bubble; + __be64 port_vl_mark_fecn; + } vls[0]; + /* array size defined by #bits set in vl_select_mask*/ + } port[1]; /* array size defined by #ports in attribute modifier */ +}; + +struct opa_port_error_counters64_msg { + /* + * Request contains first two fields, response contains the + * whole magilla + */ + __be64 port_select_mask[4]; + __be32 vl_select_mask; + + /* Response-only fields follow */ + __be32 reserved1; + struct _port_ectrs { + u8 port_number; + u8 reserved2[7]; + __be64 port_rcv_constraint_errors; + __be64 port_rcv_switch_relay_errors; + __be64 port_xmit_discards; + __be64 port_xmit_constraint_errors; + __be64 port_rcv_remote_physical_errors; + __be64 local_link_integrity_errors; + __be64 port_rcv_errors; + __be64 excessive_buffer_overruns; + __be64 fm_config_errors; + __be32 link_error_recovery; + __be32 link_downed; + u8 uncorrectable_errors; + u8 reserved3[7]; + struct _vls_ectrs { + __be64 port_vl_xmit_discards; + } vls[0]; + /* array size defined by #bits set in vl_select_mask */ + } port[1]; /* array size defined by #ports in attribute modifier */ +}; + +struct opa_port_error_info_msg { + __be64 port_select_mask[4]; + __be32 error_info_select_mask; + __be32 reserved1; + struct _port_ei { + u8 port_number; + u8 reserved2[7]; + + /* PortRcvErrorInfo */ + struct { + u8 status_and_code; + union { + u8 raw[17]; + struct { + /* EI1to12 format */ + u8 packet_flit1[8]; + u8 packet_flit2[8]; + u8 remaining_flit_bits12; + } ei1to12; + struct { + u8 packet_bytes[8]; + u8 remaining_flit_bits; + } ei13; + } ei; + u8 reserved3[6]; + } __packed port_rcv_ei; + + /* ExcessiveBufferOverrunInfo */ + struct { + u8 status_and_sc; + u8 reserved4[7]; + } __packed excessive_buffer_overrun_ei; + + /* PortXmitConstraintErrorInfo */ + struct { + u8 status; + u8 reserved5; + __be16 pkey; + __be32 slid; + } __packed port_xmit_constraint_ei; + + /* PortRcvConstraintErrorInfo */ + struct { + u8 status; + u8 reserved6; + __be16 pkey; + __be32 slid; + } __packed port_rcv_constraint_ei; + + /* PortRcvSwitchRelayErrorInfo */ + struct { + u8 status_and_code; + u8 reserved7[3]; + __u32 error_info; + } __packed port_rcv_switch_relay_ei; + + /* UncorrectableErrorInfo */ + struct { + u8 status_and_code; + u8 reserved8; + } __packed uncorrectable_ei; + + /* FMConfigErrorInfo */ + struct { + u8 status_and_code; + u8 error_info; + } __packed fm_config_ei; + __u32 reserved9; + } port[1]; /* actual array size defined by #ports in attr modifier */ +}; + +/* opa_port_error_info_msg error_info_select_mask bit definitions */ +enum error_info_selects { + ES_PORT_RCV_ERROR_INFO = (1 << 31), + ES_EXCESSIVE_BUFFER_OVERRUN_INFO = (1 << 30), + ES_PORT_XMIT_CONSTRAINT_ERROR_INFO = (1 << 29), + ES_PORT_RCV_CONSTRAINT_ERROR_INFO = (1 << 28), + ES_PORT_RCV_SWITCH_RELAY_ERROR_INFO = (1 << 27), + ES_UNCORRECTABLE_ERROR_INFO = (1 << 26), + ES_FM_CONFIG_ERROR_INFO = (1 << 25) +}; + +static int pma_get_opa_classportinfo(struct opa_pma_mad *pmp, + struct ib_device *ibdev, u32 *resp_len) +{ + struct opa_class_port_info *p = + (struct opa_class_port_info *)pmp->data; + + memset(pmp->data, 0, sizeof(pmp->data)); + + if (pmp->mad_hdr.attr_mod != 0) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + p->base_version = OPA_MGMT_BASE_VERSION; + p->class_version = OPA_SM_CLASS_VERSION; + /* + * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. + */ + p->cap_mask2_resp_time = cpu_to_be32(18); + + if (resp_len) + *resp_len += sizeof(*p); + + return reply((struct ib_mad_hdr *)pmp); +} + +static void a0_portstatus(struct hfi1_pportdata *ppd, + struct opa_port_status_rsp *rsp) +{ + if (!is_bx(ppd->dd)) { + unsigned long vl; + u64 sum_vl_xmit_wait = 0; + unsigned long vl_all_mask = VL_MASK_ALL; + + for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) { + u64 tmp = sum_vl_xmit_wait + + read_port_cntr(ppd, C_TX_WAIT_VL, + idx_from_vl(vl)); + if (tmp < sum_vl_xmit_wait) { + /* we wrapped */ + sum_vl_xmit_wait = (u64)~0; + break; + } + sum_vl_xmit_wait = tmp; + } + if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait) + rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait); + } +} + +/** + * tx_link_width - convert link width bitmask to integer + * value representing actual link width. + * @link_width: width of active link + * @return: return index of the bit set in link_width var + * + * The function convert and return the index of bit set + * that indicate the current link width. + */ +u16 tx_link_width(u16 link_width) +{ + int n = LINK_WIDTH_DEFAULT; + u16 tx_width = n; + + while (link_width && n) { + if (link_width & (1 << (n - 1))) { + tx_width = n; + break; + } + n--; + } + + return tx_width; +} + +/** + * get_xmit_wait_counters - Convert HFI 's SendWaitCnt/SendWaitVlCnt + * counter in unit of TXE cycle times to flit times. + * @ppd: info of physical Hfi port + * @link_width: width of active link + * @link_speed: speed of active link + * @vl: represent VL0-VL7, VL15 for PortVLXmitWait counters request + * and if vl value is C_VL_COUNT, it represent SendWaitCnt + * counter request + * @return: return SendWaitCnt/SendWaitVlCnt counter value per vl. + * + * Convert SendWaitCnt/SendWaitVlCnt counter from TXE cycle times to + * flit times. Call this function to samples these counters. This + * function will calculate for previous state transition and update + * current state at end of function using ppd->prev_link_width and + * ppd->port_vl_xmit_wait_last to port_vl_xmit_wait_curr and link_width. + */ +u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, + u16 link_width, u16 link_speed, int vl) +{ + u64 port_vl_xmit_wait_curr; + u64 delta_vl_xmit_wait; + u64 xmit_wait_val; + + if (vl > C_VL_COUNT) + return 0; + if (vl < C_VL_COUNT) + port_vl_xmit_wait_curr = + read_port_cntr(ppd, C_TX_WAIT_VL, vl); + else + port_vl_xmit_wait_curr = + read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL); + + xmit_wait_val = + port_vl_xmit_wait_curr - + ppd->port_vl_xmit_wait_last[vl]; + delta_vl_xmit_wait = + convert_xmit_counter(xmit_wait_val, + ppd->prev_link_width, + link_speed); + + ppd->vl_xmit_flit_cnt[vl] += delta_vl_xmit_wait; + ppd->port_vl_xmit_wait_last[vl] = port_vl_xmit_wait_curr; + ppd->prev_link_width = link_width; + + return ppd->vl_xmit_flit_cnt[vl]; +} + +static int pma_get_opa_portstatus(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + struct opa_port_status_req *req = + (struct opa_port_status_req *)pmp->data; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct opa_port_status_rsp *rsp; + unsigned long vl_select_mask = be32_to_cpu(req->vl_select_mask); + unsigned long vl; + size_t response_data_size; + u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24; + u8 port_num = req->port_num; + u8 num_vls = hweight64(vl_select_mask); + struct _vls_pctrs *vlinfo; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + int vfi; + u64 tmp, tmp2; + u16 link_width; + u16 link_speed; + + response_data_size = sizeof(struct opa_port_status_rsp) + + num_vls * sizeof(struct _vls_pctrs); + if (response_data_size > sizeof(pmp->data)) { + pmp->mad_hdr.status |= OPA_PM_STATUS_REQUEST_TOO_LARGE; + return reply((struct ib_mad_hdr *)pmp); + } + + if (nports != 1 || (port_num && port_num != port) || + num_vls > OPA_MAX_VLS || (vl_select_mask & ~VL_MASK_ALL)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + memset(pmp->data, 0, sizeof(pmp->data)); + + rsp = (struct opa_port_status_rsp *)pmp->data; + if (port_num) + rsp->port_num = port_num; + else + rsp->port_num = port; + + rsp->port_rcv_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR, + CNTR_INVALID_VL)); + + hfi1_read_link_quality(dd, &rsp->link_quality_indicator); + + rsp->vl_select_mask = cpu_to_be32((u32)vl_select_mask); + rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS, + CNTR_INVALID_VL)); + rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS, + CNTR_INVALID_VL)); + rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS, + CNTR_INVALID_VL)); + rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS, + CNTR_INVALID_VL)); + rsp->port_multicast_xmit_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS, + CNTR_INVALID_VL)); + rsp->port_multicast_rcv_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS, + CNTR_INVALID_VL)); + /* + * Convert PortXmitWait counter from TXE cycle times + * to flit times. + */ + link_width = + tx_link_width(ppd->link_width_downgrade_tx_active); + link_speed = get_link_speed(ppd->link_speed_active); + rsp->port_xmit_wait = + cpu_to_be64(get_xmit_wait_counters(ppd, link_width, + link_speed, C_VL_COUNT)); + rsp->port_rcv_fecn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL)); + rsp->port_rcv_becn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL)); + rsp->port_xmit_discards = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD, + CNTR_INVALID_VL)); + rsp->port_xmit_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, + CNTR_INVALID_VL)); + rsp->port_rcv_remote_physical_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR, + CNTR_INVALID_VL)); + rsp->local_link_integrity_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY, + CNTR_INVALID_VL)); + tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL); + tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, + CNTR_INVALID_VL); + if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) { + /* overflow/wrapped */ + rsp->link_error_recovery = cpu_to_be32(~0); + } else { + rsp->link_error_recovery = cpu_to_be32(tmp2); + } + rsp->port_rcv_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL)); + rsp->excessive_buffer_overruns = + cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL)); + rsp->fm_config_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR, + CNTR_INVALID_VL)); + rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN, + CNTR_INVALID_VL)); + + /* rsp->uncorrectable_errors is 8 bits wide, and it pegs at 0xff */ + tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL); + rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff; + + vlinfo = &rsp->vls[0]; + vfi = 0; + /* The vl_select_mask has been checked above, and we know + * that it contains only entries which represent valid VLs. + * So in the for_each_set_bit() loop below, we don't need + * any additional checks for vl. + */ + for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) { + memset(vlinfo, 0, sizeof(*vlinfo)); + + tmp = read_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl)); + rsp->vls[vfi].port_vl_rcv_data = cpu_to_be64(tmp); + + rsp->vls[vfi].port_vl_rcv_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_xmit_data = + cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_xmit_pkts = + cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL, + idx_from_vl(vl))); + /* + * Convert PortVlXmitWait counter from TXE cycle + * times to flit times. + */ + rsp->vls[vfi].port_vl_xmit_wait = + cpu_to_be64(get_xmit_wait_counters(ppd, link_width, + link_speed, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_rcv_fecn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_rcv_becn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_xmit_discards = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL, + idx_from_vl(vl))); + vlinfo++; + vfi++; + } + + a0_portstatus(ppd, rsp); + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static u64 get_error_counter_summary(struct ib_device *ibdev, u8 port, + u8 res_lli, u8 res_ler) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u64 error_counter_summary = 0, tmp; + + error_counter_summary += read_port_cntr(ppd, C_SW_RCV_CSTR_ERR, + CNTR_INVALID_VL); + /* port_rcv_switch_relay_errors is 0 for HFIs */ + error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_DSCD, + CNTR_INVALID_VL); + error_counter_summary += read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, + CNTR_INVALID_VL); + error_counter_summary += read_dev_cntr(dd, C_DC_RMT_PHY_ERR, + CNTR_INVALID_VL); + /* local link integrity must be right-shifted by the lli resolution */ + error_counter_summary += (read_dev_cntr(dd, C_DC_RX_REPLAY, + CNTR_INVALID_VL) >> res_lli); + /* link error recovery must b right-shifted by the ler resolution */ + tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL); + tmp += read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL); + error_counter_summary += (tmp >> res_ler); + error_counter_summary += read_dev_cntr(dd, C_DC_RCV_ERR, + CNTR_INVALID_VL); + error_counter_summary += read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL); + error_counter_summary += read_dev_cntr(dd, C_DC_FM_CFG_ERR, + CNTR_INVALID_VL); + /* ppd->link_downed is a 32-bit value */ + error_counter_summary += read_port_cntr(ppd, C_SW_LINK_DOWN, + CNTR_INVALID_VL); + tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL); + /* this is an 8-bit quantity */ + error_counter_summary += tmp < 0x100 ? (tmp & 0xff) : 0xff; + + return error_counter_summary; +} + +static void a0_datacounters(struct hfi1_pportdata *ppd, struct _port_dctrs *rsp) +{ + if (!is_bx(ppd->dd)) { + unsigned long vl; + u64 sum_vl_xmit_wait = 0; + unsigned long vl_all_mask = VL_MASK_ALL; + + for_each_set_bit(vl, &vl_all_mask, BITS_PER_LONG) { + u64 tmp = sum_vl_xmit_wait + + read_port_cntr(ppd, C_TX_WAIT_VL, + idx_from_vl(vl)); + if (tmp < sum_vl_xmit_wait) { + /* we wrapped */ + sum_vl_xmit_wait = (u64)~0; + break; + } + sum_vl_xmit_wait = tmp; + } + if (be64_to_cpu(rsp->port_xmit_wait) > sum_vl_xmit_wait) + rsp->port_xmit_wait = cpu_to_be64(sum_vl_xmit_wait); + } +} + +static void pma_get_opa_port_dctrs(struct ib_device *ibdev, + struct _port_dctrs *rsp) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + + rsp->port_xmit_data = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_FLITS, + CNTR_INVALID_VL)); + rsp->port_rcv_data = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FLITS, + CNTR_INVALID_VL)); + rsp->port_xmit_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_XMIT_PKTS, + CNTR_INVALID_VL)); + rsp->port_rcv_pkts = cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_PKTS, + CNTR_INVALID_VL)); + rsp->port_multicast_xmit_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_MC_XMIT_PKTS, + CNTR_INVALID_VL)); + rsp->port_multicast_rcv_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS, + CNTR_INVALID_VL)); +} + +static int pma_get_opa_datacounters(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + struct opa_port_data_counters_msg *req = + (struct opa_port_data_counters_msg *)pmp->data; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct _port_dctrs *rsp; + struct _vls_dctrs *vlinfo; + size_t response_data_size; + u32 num_ports; + u8 lq, num_vls; + u8 res_lli, res_ler; + u64 port_mask; + u8 port_num; + unsigned long vl; + unsigned long vl_select_mask; + int vfi; + u16 link_width; + u16 link_speed; + + num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24; + num_vls = hweight32(be32_to_cpu(req->vl_select_mask)); + vl_select_mask = be32_to_cpu(req->vl_select_mask); + res_lli = (u8)(be32_to_cpu(req->resolution) & MSK_LLI) >> MSK_LLI_SFT; + res_lli = res_lli ? res_lli + ADD_LLI : 0; + res_ler = (u8)(be32_to_cpu(req->resolution) & MSK_LER) >> MSK_LER_SFT; + res_ler = res_ler ? res_ler + ADD_LER : 0; + + if (num_ports != 1 || (vl_select_mask & ~VL_MASK_ALL)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* Sanity check */ + response_data_size = sizeof(struct opa_port_data_counters_msg) + + num_vls * sizeof(struct _vls_dctrs); + + if (response_data_size > sizeof(pmp->data)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* + * The bit set in the mask needs to be consistent with the + * port the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask) * 8); + + if (port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + rsp = &req->port[0]; + memset(rsp, 0, sizeof(*rsp)); + + rsp->port_number = port; + /* + * Note that link_quality_indicator is a 32 bit quantity in + * 'datacounters' queries (as opposed to 'portinfo' queries, + * where it's a byte). + */ + hfi1_read_link_quality(dd, &lq); + rsp->link_quality_indicator = cpu_to_be32((u32)lq); + pma_get_opa_port_dctrs(ibdev, rsp); + + /* + * Convert PortXmitWait counter from TXE + * cycle times to flit times. + */ + link_width = + tx_link_width(ppd->link_width_downgrade_tx_active); + link_speed = get_link_speed(ppd->link_speed_active); + rsp->port_xmit_wait = + cpu_to_be64(get_xmit_wait_counters(ppd, link_width, + link_speed, C_VL_COUNT)); + rsp->port_rcv_fecn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL)); + rsp->port_rcv_becn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL)); + rsp->port_error_counter_summary = + cpu_to_be64(get_error_counter_summary(ibdev, port, + res_lli, res_ler)); + + vlinfo = &rsp->vls[0]; + vfi = 0; + /* The vl_select_mask has been checked above, and we know + * that it contains only entries which represent valid VLs. + * So in the for_each_set_bit() loop below, we don't need + * any additional checks for vl. + */ + for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) { + memset(vlinfo, 0, sizeof(*vlinfo)); + + rsp->vls[vfi].port_vl_xmit_data = + cpu_to_be64(read_port_cntr(ppd, C_TX_FLIT_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_rcv_data = + cpu_to_be64(read_dev_cntr(dd, C_DC_RX_FLIT_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_xmit_pkts = + cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_rcv_pkts = + cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL, + idx_from_vl(vl))); + + /* + * Convert PortVlXmitWait counter from TXE + * cycle times to flit times. + */ + rsp->vls[vfi].port_vl_xmit_wait = + cpu_to_be64(get_xmit_wait_counters(ppd, link_width, + link_speed, + idx_from_vl(vl))); + + rsp->vls[vfi].port_vl_rcv_fecn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL, + idx_from_vl(vl))); + rsp->vls[vfi].port_vl_rcv_becn = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_BCN_VL, + idx_from_vl(vl))); + + /* rsp->port_vl_xmit_time_cong is 0 for HFIs */ + /* rsp->port_vl_xmit_wasted_bw ??? */ + /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? + * does this differ from rsp->vls[vfi].port_vl_xmit_wait + */ + /*rsp->vls[vfi].port_vl_mark_fecn = + * cpu_to_be64(read_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + * + offset)); + */ + vlinfo++; + vfi++; + } + + a0_datacounters(ppd, rsp); + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_get_ib_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 _port_dctrs rsp; + + if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + goto bail; + } + + memset(&rsp, 0, sizeof(rsp)); + pma_get_opa_port_dctrs(ibdev, &rsp); + + p->port_xmit_data = rsp.port_xmit_data; + p->port_rcv_data = rsp.port_rcv_data; + p->port_xmit_packets = rsp.port_xmit_pkts; + p->port_rcv_packets = rsp.port_rcv_pkts; + p->port_unicast_xmit_packets = 0; + p->port_unicast_rcv_packets = 0; + p->port_multicast_xmit_packets = rsp.port_multicast_xmit_pkts; + p->port_multicast_rcv_packets = rsp.port_multicast_rcv_pkts; + +bail: + return reply((struct ib_mad_hdr *)pmp); +} + +static void pma_get_opa_port_ectrs(struct ib_device *ibdev, + struct _port_ectrs *rsp, u8 port) +{ + u64 tmp, tmp2; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + + tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL); + tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, + CNTR_INVALID_VL); + if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) { + /* overflow/wrapped */ + rsp->link_error_recovery = cpu_to_be32(~0); + } else { + rsp->link_error_recovery = cpu_to_be32(tmp2); + } + + rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN, + CNTR_INVALID_VL)); + rsp->port_rcv_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL)); + rsp->port_rcv_remote_physical_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR, + CNTR_INVALID_VL)); + rsp->port_rcv_switch_relay_errors = 0; + rsp->port_xmit_discards = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD, + CNTR_INVALID_VL)); + rsp->port_xmit_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, + CNTR_INVALID_VL)); + rsp->port_rcv_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR, + CNTR_INVALID_VL)); + rsp->local_link_integrity_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RX_REPLAY, + CNTR_INVALID_VL)); + rsp->excessive_buffer_overruns = + cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL)); +} + +static int pma_get_opa_porterrors(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + size_t response_data_size; + struct _port_ectrs *rsp; + u8 port_num; + struct opa_port_error_counters64_msg *req; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u32 num_ports; + u8 num_pslm; + u8 num_vls; + struct hfi1_ibport *ibp; + struct hfi1_pportdata *ppd; + struct _vls_ectrs *vlinfo; + unsigned long vl; + u64 port_mask, tmp; + unsigned long vl_select_mask; + int vfi; + + req = (struct opa_port_error_counters64_msg *)pmp->data; + + num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24; + + num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3])); + num_vls = hweight32(be32_to_cpu(req->vl_select_mask)); + + if (num_ports != 1 || num_ports != num_pslm) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + response_data_size = sizeof(struct opa_port_error_counters64_msg) + + num_vls * sizeof(struct _vls_ectrs); + + if (response_data_size > sizeof(pmp->data)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + /* + * The bit set in the mask needs to be consistent with the + * port the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask) * 8); + + if (port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + rsp = &req->port[0]; + + ibp = to_iport(ibdev, port_num); + ppd = ppd_from_ibp(ibp); + + memset(rsp, 0, sizeof(*rsp)); + rsp->port_number = port_num; + + pma_get_opa_port_ectrs(ibdev, rsp, port_num); + + rsp->port_rcv_remote_physical_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR, + CNTR_INVALID_VL)); + rsp->fm_config_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR, + CNTR_INVALID_VL)); + tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL); + + rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff; + rsp->port_rcv_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL)); + vlinfo = &rsp->vls[0]; + vfi = 0; + vl_select_mask = be32_to_cpu(req->vl_select_mask); + for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) { + memset(vlinfo, 0, sizeof(*vlinfo)); + rsp->vls[vfi].port_vl_xmit_discards = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD_VL, + idx_from_vl(vl))); + vlinfo += 1; + vfi++; + } + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_get_ib_portcounters(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct _port_ectrs rsp; + u64 temp_link_overrun_errors; + u64 temp_64; + u32 temp_32; + + memset(&rsp, 0, sizeof(rsp)); + pma_get_opa_port_ectrs(ibdev, &rsp, port); + + if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + goto bail; + } + + p->symbol_error_counter = 0; /* N/A for OPA */ + + temp_32 = be32_to_cpu(rsp.link_error_recovery); + if (temp_32 > 0xFFUL) + p->link_error_recovery_counter = 0xFF; + else + p->link_error_recovery_counter = (u8)temp_32; + + temp_32 = be32_to_cpu(rsp.link_downed); + if (temp_32 > 0xFFUL) + p->link_downed_counter = 0xFF; + else + p->link_downed_counter = (u8)temp_32; + + temp_64 = be64_to_cpu(rsp.port_rcv_errors); + if (temp_64 > 0xFFFFUL) + p->port_rcv_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_errors = cpu_to_be16((u16)temp_64); + + temp_64 = be64_to_cpu(rsp.port_rcv_remote_physical_errors); + if (temp_64 > 0xFFFFUL) + p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_remphys_errors = cpu_to_be16((u16)temp_64); + + temp_64 = be64_to_cpu(rsp.port_rcv_switch_relay_errors); + p->port_rcv_switch_relay_errors = cpu_to_be16((u16)temp_64); + + temp_64 = be64_to_cpu(rsp.port_xmit_discards); + if (temp_64 > 0xFFFFUL) + p->port_xmit_discards = cpu_to_be16(0xFFFF); + else + p->port_xmit_discards = cpu_to_be16((u16)temp_64); + + temp_64 = be64_to_cpu(rsp.port_xmit_constraint_errors); + if (temp_64 > 0xFFUL) + p->port_xmit_constraint_errors = 0xFF; + else + p->port_xmit_constraint_errors = (u8)temp_64; + + temp_64 = be64_to_cpu(rsp.port_rcv_constraint_errors); + if (temp_64 > 0xFFUL) + p->port_rcv_constraint_errors = 0xFFUL; + else + p->port_rcv_constraint_errors = (u8)temp_64; + + /* LocalLink: 7:4, BufferOverrun: 3:0 */ + temp_64 = be64_to_cpu(rsp.local_link_integrity_errors); + if (temp_64 > 0xFUL) + temp_64 = 0xFUL; + + temp_link_overrun_errors = temp_64 << 4; + + temp_64 = be64_to_cpu(rsp.excessive_buffer_overruns); + if (temp_64 > 0xFUL) + temp_64 = 0xFUL; + temp_link_overrun_errors |= temp_64; + + p->link_overrun_errors = (u8)temp_link_overrun_errors; + + p->vl15_dropped = 0; /* N/A for OPA */ + +bail: + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + size_t response_data_size; + struct _port_ei *rsp; + struct opa_port_error_info_msg *req; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u64 port_mask; + u32 num_ports; + u8 port_num; + u8 num_pslm; + u64 reg; + + req = (struct opa_port_error_info_msg *)pmp->data; + rsp = &req->port[0]; + + num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod)); + num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3])); + + memset(rsp, 0, sizeof(*rsp)); + + if (num_ports != 1 || num_ports != num_pslm) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* Sanity check */ + response_data_size = sizeof(struct opa_port_error_info_msg); + + if (response_data_size > sizeof(pmp->data)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* + * The bit set in the mask needs to be consistent with the port + * the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask) * 8); + + if (port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + rsp->port_number = port; + + /* PortRcvErrorInfo */ + rsp->port_rcv_ei.status_and_code = + dd->err_info_rcvport.status_and_code; + memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1, + &dd->err_info_rcvport.packet_flit1, sizeof(u64)); + memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2, + &dd->err_info_rcvport.packet_flit2, sizeof(u64)); + + /* ExcessiverBufferOverrunInfo */ + reg = read_csr(dd, RCV_ERR_INFO); + if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) { + /* + * if the RcvExcessBufferOverrun bit is set, save SC of + * first pkt that encountered an excess buffer overrun + */ + u8 tmp = (u8)reg; + + tmp &= RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK; + tmp <<= 2; + rsp->excessive_buffer_overrun_ei.status_and_sc = tmp; + /* set the status bit */ + rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80; + } + + rsp->port_xmit_constraint_ei.status = + dd->err_info_xmit_constraint.status; + rsp->port_xmit_constraint_ei.pkey = + cpu_to_be16(dd->err_info_xmit_constraint.pkey); + rsp->port_xmit_constraint_ei.slid = + cpu_to_be32(dd->err_info_xmit_constraint.slid); + + rsp->port_rcv_constraint_ei.status = + dd->err_info_rcv_constraint.status; + rsp->port_rcv_constraint_ei.pkey = + cpu_to_be16(dd->err_info_rcv_constraint.pkey); + rsp->port_rcv_constraint_ei.slid = + cpu_to_be32(dd->err_info_rcv_constraint.slid); + + /* UncorrectableErrorInfo */ + rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable; + + /* FMConfigErrorInfo */ + rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig; + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_set_opa_portstatus(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + struct opa_clear_port_status *req = + (struct opa_clear_port_status *)pmp->data; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24; + u64 portn = be64_to_cpu(req->port_select_mask[3]); + u32 counter_select = be32_to_cpu(req->counter_select_mask); + unsigned long vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */ + unsigned long vl; + + if ((nports != 1) || (portn != 1 << port)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + /* + * only counters returned by pma_get_opa_portstatus() are + * handled, so when pma_get_opa_portstatus() gets a fix, + * the corresponding change should be made here as well. + */ + + if (counter_select & CS_PORT_XMIT_DATA) + write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_DATA) + write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_PKTS) + write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_PKTS) + write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_MCAST_XMIT_PKTS) + write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_MCAST_RCV_PKTS) + write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_WAIT) { + write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0); + ppd->port_vl_xmit_wait_last[C_VL_COUNT] = 0; + ppd->vl_xmit_flit_cnt[C_VL_COUNT] = 0; + } + /* ignore cs_sw_portCongestion for HFIs */ + + if (counter_select & CS_PORT_RCV_FECN) + write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_BECN) + write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0); + + /* ignore cs_port_xmit_time_cong for HFIs */ + /* ignore cs_port_xmit_wasted_bw for now */ + /* ignore cs_port_xmit_wait_data for now */ + if (counter_select & CS_PORT_RCV_BUBBLE) + write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0); + + /* Only applicable for switch */ + /* if (counter_select & CS_PORT_MARK_FECN) + * write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0); + */ + + if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS) + write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0); + + /* ignore cs_port_rcv_switch_relay_errors for HFIs */ + if (counter_select & CS_PORT_XMIT_DISCARDS) + write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS) + write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS) + write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS) + write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0); + + if (counter_select & CS_LINK_ERROR_RECOVERY) { + write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, + CNTR_INVALID_VL, 0); + } + + if (counter_select & CS_PORT_RCV_ERRORS) + write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) { + write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0); + dd->rcv_ovfl_cnt = 0; + } + + if (counter_select & CS_FM_CONFIG_ERRORS) + write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_LINK_DOWNED) + write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0); + + if (counter_select & CS_UNCORRECTABLE_ERRORS) + write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0); + + for_each_set_bit(vl, &vl_select_mask, BITS_PER_LONG) { + if (counter_select & CS_PORT_XMIT_DATA) + write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_DATA) + write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_XMIT_PKTS) + write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_PKTS) + write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_XMIT_WAIT) { + write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0); + ppd->port_vl_xmit_wait_last[idx_from_vl(vl)] = 0; + ppd->vl_xmit_flit_cnt[idx_from_vl(vl)] = 0; + } + + /* sw_port_vl_congestion is 0 for HFIs */ + if (counter_select & CS_PORT_RCV_FECN) + write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_BECN) + write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0); + + /* port_vl_xmit_time_cong is 0 for HFIs */ + /* port_vl_xmit_wasted_bw ??? */ + /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */ + if (counter_select & CS_PORT_RCV_BUBBLE) + write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0); + + /* if (counter_select & CS_PORT_MARK_FECN) + * write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0); + */ + if (counter_select & C_SW_XMIT_DSCD_VL) + write_port_cntr(ppd, C_SW_XMIT_DSCD_VL, + idx_from_vl(vl), 0); + } + + if (resp_len) + *resp_len += sizeof(*req); + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + struct _port_ei *rsp; + struct opa_port_error_info_msg *req; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u64 port_mask; + u32 num_ports; + u8 port_num; + u8 num_pslm; + u32 error_info_select; + + req = (struct opa_port_error_info_msg *)pmp->data; + rsp = &req->port[0]; + + num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod)); + num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3])); + + memset(rsp, 0, sizeof(*rsp)); + + if (num_ports != 1 || num_ports != num_pslm) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* + * The bit set in the mask needs to be consistent with the port + * the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask) * 8); + + if (port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + error_info_select = be32_to_cpu(req->error_info_select_mask); + + /* PortRcvErrorInfo */ + if (error_info_select & ES_PORT_RCV_ERROR_INFO) + /* turn off status bit */ + dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK; + + /* ExcessiverBufferOverrunInfo */ + if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO) + /* + * status bit is essentially kept in the h/w - bit 5 of + * RCV_ERR_INFO + */ + write_csr(dd, RCV_ERR_INFO, + RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK); + + if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO) + dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK; + + if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO) + dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK; + + /* UncorrectableErrorInfo */ + if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO) + /* turn off status bit */ + dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK; + + /* FMConfigErrorInfo */ + if (error_info_select & ES_FM_CONFIG_ERROR_INFO) + /* turn off status bit */ + dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK; + + if (resp_len) + *resp_len += sizeof(*req); + + return reply((struct ib_mad_hdr *)pmp); +} + +struct opa_congestion_info_attr { + __be16 congestion_info; + u8 control_table_cap; /* Multiple of 64 entry unit CCTs */ + u8 congestion_log_length; +} __packed; + +static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct opa_congestion_info_attr *p = + (struct opa_congestion_info_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + + if (smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + p->congestion_info = 0; + p->control_table_cap = ppd->cc_max_table_entries; + p->congestion_log_length = OPA_CONG_LOG_ELEMS; + + if (resp_len) + *resp_len += sizeof(*p); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, + u8 port, u32 *resp_len, u32 max_len) +{ + int i; + struct opa_congestion_setting_attr *p = + (struct opa_congestion_setting_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_congestion_setting_entry_shadow *entries; + struct cc_state *cc_state; + + if (smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + rcu_read_lock(); + + cc_state = get_cc_state(ppd); + + if (!cc_state) { + rcu_read_unlock(); + return reply((struct ib_mad_hdr *)smp); + } + + entries = cc_state->cong_setting.entries; + p->port_control = cpu_to_be16(cc_state->cong_setting.port_control); + p->control_map = cpu_to_be32(cc_state->cong_setting.control_map); + for (i = 0; i < OPA_MAX_SLS; 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; + } + + rcu_read_unlock(); + + if (resp_len) + *resp_len += sizeof(*p); + + return reply((struct ib_mad_hdr *)smp); +} + +/* + * Apply congestion control information stored in the ppd to the + * active structure. + */ +static void apply_cc_state(struct hfi1_pportdata *ppd) +{ + struct cc_state *old_cc_state, *new_cc_state; + + new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL); + if (!new_cc_state) + return; + + /* + * Hold the lock for updating *and* to prevent ppd information + * from changing during the update. + */ + spin_lock(&ppd->cc_state_lock); + + old_cc_state = get_cc_state_protected(ppd); + if (!old_cc_state) { + /* never active, or shutting down */ + spin_unlock(&ppd->cc_state_lock); + kfree(new_cc_state); + return; + } + + *new_cc_state = *old_cc_state; + + if (ppd->total_cct_entry) + new_cc_state->cct.ccti_limit = ppd->total_cct_entry - 1; + else + new_cc_state->cct.ccti_limit = 0; + + memcpy(new_cc_state->cct.entries, ppd->ccti_entries, + ppd->total_cct_entry * sizeof(struct ib_cc_table_entry)); + + new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED; + new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map; + memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries, + OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry)); + + rcu_assign_pointer(ppd->cc_state, new_cc_state); + + spin_unlock(&ppd->cc_state_lock); + + kfree_rcu(old_cc_state, rcu); +} + +static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct opa_congestion_setting_attr *p = + (struct opa_congestion_setting_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_congestion_setting_entry_shadow *entries; + int i; + + if (smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* + * Save details from packet into the ppd. Hold the cc_state_lock so + * our information is consistent with anyone trying to apply the state. + */ + spin_lock(&ppd->cc_state_lock); + ppd->cc_sl_control_map = be32_to_cpu(p->control_map); + + entries = ppd->congestion_entries; + for (i = 0; i < OPA_MAX_SLS; i++) { + entries[i].ccti_increase = p->entries[i].ccti_increase; + entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer); + entries[i].trigger_threshold = + p->entries[i].trigger_threshold; + entries[i].ccti_min = p->entries[i].ccti_min; + } + spin_unlock(&ppd->cc_state_lock); + + /* now apply the information */ + apply_cc_state(ppd); + + return __subn_get_opa_cong_setting(smp, am, data, ibdev, port, + resp_len, max_len); +} + +static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, + u8 port, u32 *resp_len, u32 max_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data; + u64 ts; + int i; + + if (am || smp_length_check(sizeof(*cong_log), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + spin_lock_irq(&ppd->cc_log_lock); + + cong_log->log_type = OPA_CC_LOG_TYPE_HFI; + cong_log->congestion_flags = 0; + cong_log->threshold_event_counter = + cpu_to_be16(ppd->threshold_event_counter); + memcpy(cong_log->threshold_cong_event_map, + ppd->threshold_cong_event_map, + sizeof(cong_log->threshold_cong_event_map)); + /* keep timestamp in units of 1.024 usec */ + ts = ktime_get_ns() / 1024; + cong_log->current_time_stamp = cpu_to_be32(ts); + for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) { + struct opa_hfi1_cong_log_event_internal *cce = + &ppd->cc_events[ppd->cc_mad_idx++]; + if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS) + ppd->cc_mad_idx = 0; + /* + * Entries which are older than twice the time + * required to wrap the counter are supposed to + * be zeroed (CA10-49 IBTA, release 1.2.1, V1). + */ + if ((ts - cce->timestamp) / 2 > U32_MAX) + continue; + memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3); + memcpy(cong_log->events[i].remote_qp_number_cn_entry, + &cce->rqpn, 3); + cong_log->events[i].sl_svc_type_cn_entry = + ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7); + cong_log->events[i].remote_lid_cn_entry = + cpu_to_be32(cce->rlid); + cong_log->events[i].timestamp_cn_entry = + cpu_to_be32(cce->timestamp); + } + + /* + * Reset threshold_cong_event_map, and threshold_event_counter + * to 0 when log is read. + */ + memset(ppd->threshold_cong_event_map, 0x0, + sizeof(ppd->threshold_cong_event_map)); + ppd->threshold_event_counter = 0; + + spin_unlock_irq(&ppd->cc_log_lock); + + if (resp_len) + *resp_len += sizeof(struct opa_hfi1_cong_log); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct ib_cc_table_attr *cc_table_attr = + (struct ib_cc_table_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 start_block = OPA_AM_START_BLK(am); + u32 n_blocks = OPA_AM_NBLK(am); + struct ib_cc_table_entry_shadow *entries; + int i, j; + u32 sentry, eentry; + struct cc_state *cc_state; + u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1); + + /* sanity check n_blocks, start_block */ + if (n_blocks == 0 || smp_length_check(size, max_len) || + start_block + n_blocks > ppd->cc_max_table_entries) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + rcu_read_lock(); + + cc_state = get_cc_state(ppd); + + if (!cc_state) { + rcu_read_unlock(); + return reply((struct ib_mad_hdr *)smp); + } + + sentry = start_block * IB_CCT_ENTRIES; + eentry = sentry + (IB_CCT_ENTRIES * n_blocks); + + cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit); + + entries = cc_state->cct.entries; + + /* return n_blocks, though the last block may not be full */ + for (j = 0, i = sentry; i < eentry; j++, i++) + cc_table_attr->ccti_entries[j].entry = + cpu_to_be16(entries[i].entry); + + rcu_read_unlock(); + + if (resp_len) + *resp_len += size; + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 start_block = OPA_AM_START_BLK(am); + u32 n_blocks = OPA_AM_NBLK(am); + struct ib_cc_table_entry_shadow *entries; + int i, j; + u32 sentry, eentry; + u16 ccti_limit; + u32 size = sizeof(u16) * (IB_CCT_ENTRIES * n_blocks + 1); + + /* sanity check n_blocks, start_block */ + if (n_blocks == 0 || smp_length_check(size, max_len) || + start_block + n_blocks > ppd->cc_max_table_entries) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + sentry = start_block * IB_CCT_ENTRIES; + eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) + + (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1; + + /* sanity check ccti_limit */ + ccti_limit = be16_to_cpu(p->ccti_limit); + if (ccti_limit + 1 > eentry) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* + * Save details from packet into the ppd. Hold the cc_state_lock so + * our information is consistent with anyone trying to apply the state. + */ + spin_lock(&ppd->cc_state_lock); + ppd->total_cct_entry = ccti_limit + 1; + entries = ppd->ccti_entries; + for (j = 0, i = sentry; i < eentry; j++, i++) + entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry); + spin_unlock(&ppd->cc_state_lock); + + /* now apply the information */ + apply_cc_state(ppd); + + return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len, + max_len); +} + +struct opa_led_info { + __be32 rsvd_led_mask; + __be32 rsvd; +}; + +#define OPA_LED_SHIFT 31 +#define OPA_LED_MASK BIT(OPA_LED_SHIFT) + +static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_pportdata *ppd = dd->pport; + struct opa_led_info *p = (struct opa_led_info *)data; + u32 nport = OPA_AM_NPORT(am); + u32 is_beaconing_active; + + if (nport != 1 || smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* + * This pairs with the memory barrier in hfi1_start_led_override to + * ensure that we read the correct state of LED beaconing represented + * by led_override_timer_active + */ + smp_rmb(); + is_beaconing_active = !!atomic_read(&ppd->led_override_timer_active); + p->rsvd_led_mask = cpu_to_be32(is_beaconing_active << OPA_LED_SHIFT); + + if (resp_len) + *resp_len += sizeof(struct opa_led_info); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct opa_led_info *p = (struct opa_led_info *)data; + u32 nport = OPA_AM_NPORT(am); + int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK); + + if (nport != 1 || smp_length_check(sizeof(*p), max_len)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + if (on) + hfi1_start_led_override(dd->pport, 2000, 1500); + else + shutdown_led_override(dd->pport); + + return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len, + max_len); +} + +static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len) +{ + int ret; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + switch (attr_id) { + case IB_SMP_ATTR_NODE_DESC: + ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_NODE_INFO: + ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_PORT_INFO: + ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_PKEY_TABLE: + ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SL_TO_SC_MAP: + ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_SL_MAP: + ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLT_MAP: + ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLNT_MAP: + ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_PORT_STATE_INFO: + ret = __subn_get_opa_psi(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE: + ret = __subn_get_opa_bct(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_CABLE_INFO: + ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_CONGESTION_INFO: + ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING: + ret = __subn_get_opa_cong_setting(smp, am, data, ibdev, + port, resp_len, max_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_LOG: + ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev, + port, resp_len, max_len); + break; + case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE: + ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_LED_INFO: + ret = __subn_get_opa_led_info(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_SM_INFO: + if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + if (ibp->rvp.port_cap_flags & IB_PORT_SM) + return IB_MAD_RESULT_SUCCESS; + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + return ret; +} + +static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, u8 port, + u32 *resp_len, u32 max_len, int local_mad) +{ + int ret; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + switch (attr_id) { + case IB_SMP_ATTR_PORT_INFO: + ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port, + resp_len, max_len, local_mad); + break; + case IB_SMP_ATTR_PKEY_TABLE: + ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SL_TO_SC_MAP: + ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_SL_MAP: + ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLT_MAP: + ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLNT_MAP: + ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_PORT_STATE_INFO: + ret = __subn_set_opa_psi(smp, am, data, ibdev, port, + resp_len, max_len, local_mad); + break; + case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE: + ret = __subn_set_opa_bct(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING: + ret = __subn_set_opa_cong_setting(smp, am, data, ibdev, + port, resp_len, max_len); + break; + case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE: + ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_LED_INFO: + ret = __subn_set_opa_led_info(smp, am, data, ibdev, port, + resp_len, max_len); + break; + case IB_SMP_ATTR_SM_INFO: + if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + if (ibp->rvp.port_cap_flags & IB_PORT_SM) + return IB_MAD_RESULT_SUCCESS; + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + return ret; +} + +static inline void set_aggr_error(struct opa_aggregate *ag) +{ + ag->err_reqlength |= cpu_to_be16(0x8000); +} + +static int subn_get_opa_aggregate(struct opa_smp *smp, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + int i; + u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff; + u8 *next_smp = opa_get_smp_data(smp); + + if (num_attr < 1 || num_attr > 117) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < num_attr; i++) { + struct opa_aggregate *agg; + size_t agg_data_len; + size_t agg_size; + u32 am; + + agg = (struct opa_aggregate *)next_smp; + agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8; + agg_size = sizeof(*agg) + agg_data_len; + am = be32_to_cpu(agg->attr_mod); + + *resp_len += agg_size; + + if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* zero the payload for this segment */ + memset(next_smp + sizeof(*agg), 0, agg_data_len); + + (void)subn_get_opa_sma(agg->attr_id, smp, am, agg->data, + ibdev, port, NULL, (u32)agg_data_len); + + if (smp->status & IB_SMP_INVALID_FIELD) + break; + if (smp->status & ~IB_SMP_DIRECTION) { + set_aggr_error(agg); + return reply((struct ib_mad_hdr *)smp); + } + next_smp += agg_size; + } + + return reply((struct ib_mad_hdr *)smp); +} + +static int subn_set_opa_aggregate(struct opa_smp *smp, + struct ib_device *ibdev, u8 port, + u32 *resp_len, int local_mad) +{ + int i; + u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff; + u8 *next_smp = opa_get_smp_data(smp); + + if (num_attr < 1 || num_attr > 117) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < num_attr; i++) { + struct opa_aggregate *agg; + size_t agg_data_len; + size_t agg_size; + u32 am; + + agg = (struct opa_aggregate *)next_smp; + agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8; + agg_size = sizeof(*agg) + agg_data_len; + am = be32_to_cpu(agg->attr_mod); + + *resp_len += agg_size; + + if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + (void)subn_set_opa_sma(agg->attr_id, smp, am, agg->data, + ibdev, port, NULL, (u32)agg_data_len, + local_mad); + + if (smp->status & IB_SMP_INVALID_FIELD) + break; + if (smp->status & ~IB_SMP_DIRECTION) { + set_aggr_error(agg); + return reply((struct ib_mad_hdr *)smp); + } + next_smp += agg_size; + } + + return reply((struct ib_mad_hdr *)smp); +} + +/* + * OPAv1 specifies that, on the transition to link up, these counters + * are cleared: + * PortRcvErrors [*] + * LinkErrorRecovery + * LocalLinkIntegrityErrors + * ExcessiveBufferOverruns [*] + * + * [*] Error info associated with these counters is retained, but the + * error info status is reset to 0. + */ +void clear_linkup_counters(struct hfi1_devdata *dd) +{ + /* PortRcvErrors */ + write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0); + dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK; + /* LinkErrorRecovery */ + write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0); + /* LocalLinkIntegrityErrors */ + write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0); + /* ExcessiveBufferOverruns */ + write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0); + dd->rcv_ovfl_cnt = 0; + dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK; +} + +static int is_full_mgmt_pkey_in_table(struct hfi1_ibport *ibp) +{ + unsigned int i; + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + + for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) + if (ppd->pkeys[i] == FULL_MGMT_P_KEY) + return 1; + + return 0; +} + +/* + * is_local_mad() returns 1 if 'mad' is sent from, and destined to the + * local node, 0 otherwise. + */ +static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad, + const struct ib_wc *in_wc) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + const struct opa_smp *smp = (const struct opa_smp *)mad; + + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { + return (smp->hop_cnt == 0 && + smp->route.dr.dr_slid == OPA_LID_PERMISSIVE && + smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE); + } + + return (in_wc->slid == ppd->lid); +} + +/* + * opa_local_smp_check() should only be called on MADs for which + * is_local_mad() returns true. It applies the SMP checks that are + * specific to SMPs which are sent from, and destined to this node. + * opa_local_smp_check() returns 0 if the SMP passes its checks, 1 + * otherwise. + * + * SMPs which arrive from other nodes are instead checked by + * opa_smp_check(). + */ +static int opa_local_smp_check(struct hfi1_ibport *ibp, + const struct ib_wc *in_wc) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u16 pkey; + + if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys)) + return 1; + + pkey = ppd->pkeys[in_wc->pkey_index]; + /* + * We need to do the "node-local" checks specified in OPAv1, + * rev 0.90, section 9.10.26, which are: + * - pkey is 0x7fff, or 0xffff + * - Source QPN == 0 || Destination QPN == 0 + * - the MAD header's management class is either + * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or + * IB_MGMT_CLASS_SUBN_LID_ROUTED + * - SLID != 0 + * + * However, we know (and so don't need to check again) that, + * for local SMPs, the MAD stack passes MADs with: + * - Source QPN of 0 + * - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE + * - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or + * our own port's lid + * + */ + if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY) + return 0; + ingress_pkey_table_fail(ppd, pkey, in_wc->slid); + return 1; +} + +/** + * hfi1_pkey_validation_pma - It validates PKEYs for incoming PMA MAD packets. + * @ibp: IB port data + * @in_mad: MAD packet with header and data + * @in_wc: Work completion data such as source LID, port number, etc. + * + * These are all the possible logic rules for validating a pkey: + * + * a) If pkey neither FULL_MGMT_P_KEY nor LIM_MGMT_P_KEY, + * and NOT self-originated packet: + * Drop MAD packet as it should always be part of the + * management partition unless it's a self-originated packet. + * + * b) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY in pkey table: + * The packet is coming from a management node and the receiving node + * is also a management node, so it is safe for the packet to go through. + * + * c) If pkey_index -> FULL_MGMT_P_KEY, and LIM_MGMT_P_KEY is NOT in pkey table: + * Drop the packet as LIM_MGMT_P_KEY should always be in the pkey table. + * It could be an FM misconfiguration. + * + * d) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY is NOT in pkey table: + * It is safe for the packet to go through since a non-management node is + * talking to another non-management node. + * + * e) If pkey_index -> LIM_MGMT_P_KEY and FULL_MGMT_P_KEY in pkey table: + * Drop the packet because a non-management node is talking to a + * management node, and it could be an attack. + * + * For the implementation, these rules can be simplied to only checking + * for (a) and (e). There's no need to check for rule (b) as + * the packet doesn't need to be dropped. Rule (c) is not possible in + * the driver as LIM_MGMT_P_KEY is always in the pkey table. + * + * Return: + * 0 - pkey is okay, -EINVAL it's a bad pkey + */ +static int hfi1_pkey_validation_pma(struct hfi1_ibport *ibp, + const struct opa_mad *in_mad, + const struct ib_wc *in_wc) +{ + u16 pkey_value = hfi1_lookup_pkey_value(ibp, in_wc->pkey_index); + + /* Rule (a) from above */ + if (!is_local_mad(ibp, in_mad, in_wc) && + pkey_value != LIM_MGMT_P_KEY && + pkey_value != FULL_MGMT_P_KEY) + return -EINVAL; + + /* Rule (e) from above */ + if (pkey_value == LIM_MGMT_P_KEY && + is_full_mgmt_pkey_in_table(ibp)) + return -EINVAL; + + return 0; +} + +static int process_subn_opa(struct ib_device *ibdev, int mad_flags, + u8 port, const struct opa_mad *in_mad, + struct opa_mad *out_mad, + u32 *resp_len, int local_mad) +{ + struct opa_smp *smp = (struct opa_smp *)out_mad; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + u8 *data; + u32 am, data_size; + __be16 attr_id; + int ret; + + *out_mad = *in_mad; + data = opa_get_smp_data(smp); + data_size = (u32)opa_get_smp_data_size(smp); + + am = be32_to_cpu(smp->attr_mod); + attr_id = smp->attr_id; + if (smp->class_version != OPA_SM_CLASS_VERSION) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_mad_hdr *)smp); + return ret; + } + ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey, + smp->route.dr.dr_slid, smp->route.dr.return_path, + smp->hop_cnt); + 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 (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), + (struct ib_mad_hdr *)smp, 0, + smp->mkey, smp->route.dr.dr_slid, + smp->route.dr.return_path, + smp->hop_cnt); + ret = IB_MAD_RESULT_FAILURE; + return ret; + } + + *resp_len = opa_get_smp_header_size(smp); + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (attr_id) { + default: + clear_opa_smp_data(smp); + ret = subn_get_opa_sma(attr_id, smp, am, data, + ibdev, port, resp_len, + data_size); + break; + case OPA_ATTRIB_ID_AGGREGATE: + ret = subn_get_opa_aggregate(smp, ibdev, port, + resp_len); + break; + } + break; + case IB_MGMT_METHOD_SET: + switch (attr_id) { + default: + ret = subn_set_opa_sma(attr_id, smp, am, data, + ibdev, port, resp_len, + data_size, local_mad); + break; + case OPA_ATTRIB_ID_AGGREGATE: + ret = subn_set_opa_aggregate(smp, ibdev, port, + resp_len, local_mad); + break; + } + break; + 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; + break; + case IB_MGMT_METHOD_TRAP_REPRESS: + subn_handle_opa_trap_repress(ibp, smp); + /* Always successful */ + ret = IB_MAD_RESULT_SUCCESS; + break; + default: + smp->status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + + return ret; +} + +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 hfi1_ibport *ibp = to_iport(ibdev, port); + int ret; + + *out_mad = *in_mad; + if (smp->class_version != 1) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_mad_hdr *)smp); + return ret; + } + + ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, + smp->mkey, (__force __be32)smp->dr_slid, + smp->return_path, smp->hop_cnt); + 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), + (struct ib_mad_hdr *)smp, 0, + smp->mkey, + (__force __be32)smp->dr_slid, + smp->return_path, smp->hop_cnt); + ret = IB_MAD_RESULT_FAILURE; + return ret; + } + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (smp->attr_id) { + case IB_SMP_ATTR_NODE_INFO: + ret = subn_get_nodeinfo(smp, ibdev, port); + break; + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + break; + } + + 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; + struct ib_class_port_info *cpi = (struct ib_class_port_info *) + &pmp->data; + int ret = IB_MAD_RESULT_FAILURE; + + *out_mad = *in_mad; + if (pmp->mad_hdr.class_version != 1) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_mad_hdr *)pmp); + return ret; + } + + switch (pmp->mad_hdr.method) { + case IB_MGMT_METHOD_GET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_PORT_COUNTERS: + ret = pma_get_ib_portcounters(pmp, ibdev, port); + break; + case IB_PMA_PORT_COUNTERS_EXT: + ret = pma_get_ib_portcounters_ext(pmp, ibdev, port); + break; + case IB_PMA_CLASS_PORT_INFO: + cpi->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; + ret = reply((struct ib_mad_hdr *)pmp); + break; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + break; + } + break; + + case IB_MGMT_METHOD_SET: + if (pmp->mad_hdr.attr_id) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + } + break; + + 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; + break; + + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_mad_hdr *)pmp); + break; + } + + return ret; +} + +static int process_perf_opa(struct ib_device *ibdev, u8 port, + const struct opa_mad *in_mad, + struct opa_mad *out_mad, u32 *resp_len) +{ + struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad; + int ret; + + *out_mad = *in_mad; + + if (pmp->mad_hdr.class_version != OPA_SM_CLASS_VERSION) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; + return reply((struct ib_mad_hdr *)pmp); + } + + *resp_len = sizeof(pmp->mad_hdr); + + 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_opa_classportinfo(pmp, ibdev, resp_len); + break; + case OPA_PM_ATTRIB_ID_PORT_STATUS: + ret = pma_get_opa_portstatus(pmp, ibdev, port, + resp_len); + break; + case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS: + ret = pma_get_opa_datacounters(pmp, ibdev, port, + resp_len); + break; + case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS: + ret = pma_get_opa_porterrors(pmp, ibdev, port, + resp_len); + break; + case OPA_PM_ATTRIB_ID_ERROR_INFO: + ret = pma_get_opa_errorinfo(pmp, ibdev, port, + resp_len); + break; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + break; + } + break; + + case IB_MGMT_METHOD_SET: + switch (pmp->mad_hdr.attr_id) { + case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS: + ret = pma_set_opa_portstatus(pmp, ibdev, port, + resp_len); + break; + case OPA_PM_ATTRIB_ID_ERROR_INFO: + ret = pma_set_opa_errorinfo(pmp, ibdev, port, + resp_len); + break; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + break; + } + break; + + 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; + break; + + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_mad_hdr *)pmp); + break; + } + + return ret; +} + +static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags, + u8 port, const struct ib_wc *in_wc, + const struct ib_grh *in_grh, + const struct opa_mad *in_mad, + struct opa_mad *out_mad, size_t *out_mad_size, + u16 *out_mad_pkey_index) +{ + int ret; + int pkey_idx; + int local_mad = 0; + u32 resp_len = in_wc->byte_len - sizeof(*in_grh); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY); + if (pkey_idx < 0) { + pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n", + hfi1_get_pkey(ibp, 1)); + pkey_idx = 1; + } + *out_mad_pkey_index = (u16)pkey_idx; + + switch (in_mad->mad_hdr.mgmt_class) { + case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: + case IB_MGMT_CLASS_SUBN_LID_ROUTED: + local_mad = is_local_mad(ibp, in_mad, in_wc); + if (local_mad) { + ret = opa_local_smp_check(ibp, in_wc); + if (ret) + return IB_MAD_RESULT_FAILURE; + } + ret = process_subn_opa(ibdev, mad_flags, port, in_mad, + out_mad, &resp_len, local_mad); + goto bail; + case IB_MGMT_CLASS_PERF_MGMT: + ret = hfi1_pkey_validation_pma(ibp, in_mad, in_wc); + if (ret) + return IB_MAD_RESULT_FAILURE; + + ret = process_perf_opa(ibdev, port, in_mad, out_mad, &resp_len); + goto bail; + + default: + ret = IB_MAD_RESULT_SUCCESS; + } + +bail: + if (ret & IB_MAD_RESULT_REPLY) + *out_mad_size = round_up(resp_len, 8); + else if (ret & IB_MAD_RESULT_SUCCESS) + *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh); + + return ret; +} + +static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port, + const struct ib_wc *in_wc, + const struct ib_grh *in_grh, + const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + int ret; + + 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); + break; + case IB_MGMT_CLASS_PERF_MGMT: + ret = process_perf(ibdev, port, in_mad, out_mad); + break; + default: + ret = IB_MAD_RESULT_SUCCESS; + break; + } + + return ret; +} + +/** + * hfi1_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 hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad_hdr *in_mad, size_t in_mad_size, + struct ib_mad_hdr *out_mad, size_t *out_mad_size, + u16 *out_mad_pkey_index) +{ + switch (in_mad->base_version) { + case OPA_MGMT_BASE_VERSION: + if (unlikely(in_mad_size != sizeof(struct opa_mad))) { + dev_err(ibdev->dev.parent, "invalid in_mad_size\n"); + return IB_MAD_RESULT_FAILURE; + } + return hfi1_process_opa_mad(ibdev, mad_flags, port, + in_wc, in_grh, + (struct opa_mad *)in_mad, + (struct opa_mad *)out_mad, + out_mad_size, + out_mad_pkey_index); + case IB_MGMT_BASE_VERSION: + return hfi1_process_ib_mad(ibdev, mad_flags, port, + in_wc, in_grh, + (const struct ib_mad *)in_mad, + (struct ib_mad *)out_mad); + default: + break; + } + + return IB_MAD_RESULT_FAILURE; +} |