[PATCH for-next 16/23] RDMA/hfi2: Implement MAD handling

Dennis Dalessandro
2025-06-30T17:58:16Z

Add the handling for MAD processing and communicating with the embedded
micro on the new chip.

Co-developed-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Co-developed-by: Douglas Miller <doug.miller@cornelisnetworks.com>
Signed-off-by: Douglas Miller <doug.miller@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
---
drivers/infiniband/hw/hfi2/cport.c | 746 ++++
drivers/infiniband/hw/hfi2/mad.c | 6055 ++++++++++++++++++++++++++++++++++++
2 files changed, 6801 insertions(+)
create mode 100644 drivers/infiniband/hw/hfi2/cport.c
create mode 100644 drivers/infiniband/hw/hfi2/mad.c

diff --git a/drivers/infiniband/hw/hfi2/cport.c b/drivers/infiniband/hw/hfi2/cport.c
new file mode 100644
index 000000000000..918476c39847
--- /dev/null
+++ b/drivers/infiniband/hw/hfi2/cport.c
@@ -0,0 +1,746 @@
+// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
+/*
+ * Copyright(c) 2023 Cornelis Networks.
+ */
+
+/*
+ * Implementation details of CPORT communications.
+ */
+
+#include <linux/semaphore.h>
+#include <linux/io.h>
+
+#include "hfi2.h"
+#include "chip_jkr.h"
+#include "cport.h"
+
+static void cport_send_req_fn(struct work_struct *work);
+static void cport_send_rsp_fn(struct work_struct *work);
+
+/*
+ * This limit needs to balance memory consuption against
+ * the need to ensure tids don't repeat during periods of
+ * CPORT stall and message timeout.
+ *
+ * Also note that the limit parameter passed to xa_alloc*()
+ * gets modified, so we cannot use a static structure here.
+ */
+#define cport_tid_limit XA_LIMIT(0, 255)
+
+/*
+ * The "header" (first qword) of a message to/from CPORT.
+ */
+union cport_header {
+ struct {
+ u64 len:15;
+ u64 _resv1:1;
+ u64 is_req:1;
+ u64 no_rsp:1;
+ u64 seq_no:6;
+ u64 sts:8;
+ u64 tid:16;
+ u64 sideband:8;
+ u64 op_code:8;
+ };
+ u64 qw;
+};
+
+#define CPORT_SEQNO_MASK 0x3f
+
+#define CPORT_HDR_DEF 0x0000007ec0000000ul
+#define CPORT_HDR_LEN 48 /* bit position of length in CPORT_HDR_DEF */
+
+#define CPORT_IN_SCRATCH (JKR_ASIC_CFG_SCRATCH + 0)
+#define CPORT_OUT_SCRATCH (JKR_ASIC_CFG_SCRATCH + sizeof(u64))
+
+/*
+ * Assignment of bits in JKR_MCTXT_CPORT_INT_STATUS and
+ * JKR_MCTXT_PF0_INT_STATUS.
+ */
+#define JKR_MCTXT_INT_OUTBOX_EMPTY 0b00000001
+#define JKR_MCTXT_INT_INBOX_FULL 0b00000010
+
+/*
+ * The remainder is private to the host driver.
+ * CPORT firmware has no need of this interface.
+ */
+
+/*
+ * How the MCTXT CSRs are interpreted.
+ */
+union mctxt_mem {
+ union cport_header hdr;
+ u64 qw[JKR_C_MCTXT_MEM_SIZE_IN_QWORDS];
+};
+
+/*
+ * The maximum length of a CPORT message payload (cport_header.len).
+ * The MCTXT is 2K each direction, and payload length excludes header.
+ */
+#define CH_LEN_MAX (sizeof(union mctxt_mem) - sizeof(union cport_header))
+
+/*
+ * The common structure used to implement CPORT messages in hfi2.
+ */
+struct cport_work {
+ struct work_struct work;
+ struct kref kref;
+ int flags;
+ long timeout;
+ struct semaphore *sem; /* only valid in send, if request w/response */
+ struct hfi2_devdata *dd; /* only valid in recv context */
+ union mctxt_mem req;
+ union mctxt_mem rsp; /* only used for request w/response */
+};
+
+#define CW_FLAG_SEND 0x01 /* struct originated in send */
+#define CW_FLAG_RECV 0x02 /* struct originated in receive */
+#define CW_FLAG_RQ_ALLOC 0x04 /* request payload was kalloc'ed */
+#define CW_FLAG_RS_ALLOC 0x08 /* response payload was kalloc'ed */
+
+/*
+ * Acquire a reference to the message structure
+ */
+static inline void cwget(struct cport_work *cw)
+{
+ kref_get(&cw->kref);
+}
+
+/*
+ * Locate and remove the 'id' message in the xarray and atomically
+ * acquire a reference to the message structure.
+ */
+static inline struct cport_work *cwget_xa(struct hfi2_devdata *dd, u32 id)
+{
+ struct cport_work *cw;
+
+ xa_lock(&dd->cport->tid_xa);
+ cw = __xa_erase(&dd->cport->tid_xa, id);
+ if (cw)
+ cwget(cw);
+ xa_unlock(&dd->cport->tid_xa);
+ return cw;
+}
+
+static void cwrelease(struct kref *kref)
+{
+ struct cport_work *cw = container_of(kref, struct cport_work, kref);
+
+ kfree(cw);
+}
+
+static void cwput(struct cport_work *cw)
+{
+ kref_put(&cw->kref, cwrelease);
+}
+
+static struct cport_work *cwalloc(int flag)
+{
+ struct cport_work *cw = kzalloc(sizeof(*cw), GFP_KERNEL);
+
+ if (!cw)
+ return NULL;
+ cw->flags = flag;
+ kref_init(&cw->kref);
+ return cw;
+}
+
+/* set "external" (non-alloc) response payload */
+static void pld_rsp_set(struct cport_work *cw, void *pld, int len)
+{
+ if (len > CH_LEN_MAX)
+ len = CH_LEN_MAX;
+ memcpy(&cw->rsp.qw[1], pld, len);
+ cw->rsp.hdr.len = len + sizeof(cw->rsp.hdr);
+}
+
+/*
+ * Send request, non-blocking, with timeout for OUTBOX_EMPTY wait.
+ * Caller must watch 'wait' semaphore for completion, and
+ * then call cport_send_comp() or cport_send_cancel() to finalize everything.
+ * Returns handle for cport_send_comp()/_cancel(), or ERR_PTR().
+ *
+ * See cport_send_req() for example usage.
+ */
+void *cport_send_req_nb(struct hfi2_devdata *dd, u8 op, u8 sideband, void *payload,
+ int len, struct semaphore *wait, long timeout)
+{
+ int ret;
+ struct cport_work *msg;
+ u32 idx;
+
+ if (!dd->cport || len > CH_LEN_MAX)
+ return ERR_PTR(-EINVAL);
+
+ msg = cwalloc(CW_FLAG_SEND);
+ if (!msg)
+ return ERR_PTR(-ENOMEM);
+ msg->dd = dd;
+ msg->timeout = timeout;
+ memcpy(&msg->req.qw[1], payload, len);
+ ret = xa_alloc_cyclic(&dd->cport->tid_xa, &idx, msg, cport_tid_limit,
+ &dd->cport->tid_next, GFP_KERNEL);
+ if (ret < 0) {
+ cwput(msg);
+ return ERR_PTR(ret);
+ }
+ msg->req.hdr.op_code = op;
+ msg->req.hdr.sideband = sideband;
+ msg->req.hdr.is_req = 1;
+ msg->req.hdr.no_rsp = 0;
+ msg->req.hdr.tid = idx;
+ msg->req.hdr.len = len + sizeof(msg->req.hdr);
+ msg->sem = wait;
+ cwget(msg); /* extra ref so not freed after send */
+ INIT_WORK(&msg->work, cport_send_req_fn);
+ queue_work(dd->hfi2_wq, &msg->work);
+ return msg;
+}
+
+/*
+ * Extract results from response and drop (last) reference to structure.
+ * Returns status from response header.
+ * Must never be called twice for the same message (message has been freed).
+ * Must never be called on a message that has not received response (up'ed wait).
+ */
+int cport_send_comp(struct hfi2_devdata *dd, void *handle,
+ void **rsp_pld, int *rsp_len)
+{
+ struct cport_work *msg = handle;
+ void *ptr;
+ int ret;
+ int len;
+
+ *rsp_len = len = msg->rsp.hdr.len - sizeof(msg->rsp.hdr);
+ if (rsp_pld) {
+ ptr = kzalloc(len, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+ memcpy(ptr, &msg->rsp.qw[1], len);
+ *rsp_pld = ptr;
+ }
+ ret = msg->rsp.hdr.sts;
+ cwput(msg);
+ return ret;
+}
+
+/*
+ * Cleanup aborted wait for response.
+ * Only called for requests w/responses.
+ * Must never be called twice for the same message (message has been freed).
+ */
+void cport_send_cancel(struct hfi2_devdata *dd, void *handle)
+{
+ struct cport_work *msg = handle;
+
+ cancel_work(&msg->work); /* cport_send() drops ref on all paths */
+ xa_erase(&dd->cport->tid_xa, msg->req.hdr.tid);
+ cwput(msg);
+}
+
+/*
+ * Send request and wait for response, with timeout.
+ * Caller must be able to sleep.
+ * Returns status from response header, and response payload data, on success.
+ * Response payload was from k[z]alloc() and caller must kfree().
+ * On error, returns -errno (response status is always 0-15).
+ */
+int cport_send_req(struct hfi2_devdata *dd, u8 op, u8 sideband, void *payload, int len,
+ void **rsp_pld, int *rsp_len, long timeout)
+{
+ int ret;
+ struct cport_work *msg;
+ DEFINE_SEMAPHORE(comp, 0);
+
+ might_sleep();
+
+ msg = cport_send_req_nb(dd, op, sideband, payload, len, &comp, timeout);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+ if (timeout > 0 && timeout != MAX_SCHEDULE_TIMEOUT)
+ ret = down_timeout(&comp, timeout);
+ else
+ ret = down_killable(&comp);
+ if (ret) {
+ dd_dev_err(dd, "CPORT request wait interrupted %016llx (%d)\n",
+ msg->req.hdr.qw, ret);
+ cport_send_cancel(dd, msg);
+ return ret;
+ }
+ return cport_send_comp(dd, msg, rsp_pld, rsp_len);
+}
+
+int cport_send_notif(struct hfi2_devdata *dd, u8 op, u8 sideband, void *payload, int len)
+{
+ struct cport_work *msg;
+
+ if (!dd->cport || len > CH_LEN_MAX)
+ return -EINVAL;
+
+ msg = cwalloc(CW_FLAG_SEND);
+ if (!msg)
+ return -ENOMEM;
+ msg->dd = dd;
+ memcpy(&msg->req.qw[1], payload, len);
+ msg->req.hdr.len = len + sizeof(msg->req.hdr);
+ msg->req.hdr.op_code = op;
+ msg->req.hdr.sideband = sideband;
+ msg->req.hdr.is_req = 1;
+ msg->req.hdr.no_rsp = 1;
+ INIT_WORK(&msg->work, cport_send_req_fn);
+ queue_work(dd->hfi2_wq, &msg->work);
+ return 0;
+}
+
+/*
+ ********************************************************************
+ * Internal routines.
+ */
+
+/*
+ * Send a response to CPORT's request.
+ *
+ * Re-uses message structure from request. Queues to send workqueue.
+ */
+static int cport_send_rsp(struct cport_work *msg, int sts)
+{
+ struct hfi2_devdata *dd = msg->dd;
+
+ /* rsp.hdr.len and rsp.qw[1..] already setup, also rsp.op_code/rsp.tid */
+ msg->rsp.hdr.is_req = 0;
+ msg->rsp.hdr.sts = sts;
+ INIT_WORK(&msg->work, cport_send_rsp_fn);
+ queue_work(dd->hfi2_wq, &msg->work);
+ return 0;
+}
+
+static void cport_send(struct cport_work *msg, bool req)
+{
+ int len;
+ u64 *ptr;
+ u32 i;
+ int ret;
+ struct hfi2_devdata *dd = msg->dd;
+ union mctxt_mem *mc = req ? &msg->req : &msg->rsp;
+
+ /* sleep until OutboxEmpty... */
+ if (msg->timeout > 0 && msg->timeout != MAX_SCHEDULE_TIMEOUT)
+ ret = down_timeout(&dd->cport->outbox, msg->timeout);
+ else
+ ret = down_killable(&dd->cport->outbox);
+ if (ret) {
+ dd_dev_err(dd, "CPORT Send OUTBOX_EMPTY killed %016llx (%d)\n",
+ msg->req.hdr.qw, ret);
+ cwput(msg);
+ return; /* no way to report error to caller */
+ }
+ mc->hdr.seq_no = atomic_fetch_inc(&dd->cport->seqno);
+ len = mc->hdr.len; /* msg len == pkt len, >= sizeof(u64) */
+ ptr = &mc->qw[0];
+ /* NOTE: "CPORT IN" is our output */
+ i = JKR_MCTXT_CPORT_IN;
+ write_csr(dd, CPORT_IN_SCRATCH, CPORT_HDR_DEF | ((u64)len << CPORT_HDR_LEN));
+ /* since buffer is full MCTXT, last bytes can be sent as qword. */
+ while (len > 0) {
+ write_csr(dd, i, *ptr++);
+ i += sizeof(u64);
+ len -= sizeof(u64);
+ }
+ write_csr(dd, JKR_MCTXT_CPORT_INT_STATUS, JKR_MCTXT_INT_INBOX_FULL);
+ cwput(msg); /* may or may not free memory */
+}
+
+/*
+ * Low-level send to CPORT via MCTXT.
+ *
+ * Interfaces with MCTXT.
+ */
+static void cport_send_req_fn(struct work_struct *work)
+{
+ struct cport_work *msg = container_of(work, struct cport_work, work);
+
+ cport_send(msg, true);
+}
+
+static void cport_send_rsp_fn(struct work_struct *work)
+{
+ struct cport_work *msg = container_of(work, struct cport_work, work);
+
+ cport_send(msg, false);
+}
+
+static int echo_req(struct hfi2_devdata *dd, u8 op, u8 sideband,
+ void *pld, int pll, void *handle)
+{
+ struct cport_work *msg = handle;
+
+ dd_dev_info(msg->dd, "cport ping %02x (%d)\n", sideband, pll);
+ /* Leave payload in-tact (echo). */
+ pld_rsp_set(msg, pld, pll);
+ return MSG_RSP_STATUS_OK;
+}
+
+static int inval_req(struct hfi2_devdata *dd, u8 op, u8 sideband,
+ void *pld, int pll, void *handle)
+{
+ return MSG_RSP_STATUS_OPCODE_UNSUPPORTED;
+}
+
+/*
+ * Process a request from CPORT.
+ *
+ * May be dispatched to external function from handlers[].
+ */
+static void cport_req_fn(struct work_struct *work)
+{
+ struct cport_work *msg = container_of(work, struct cport_work, work);
+ cport_handler func;
+ int ret = MSG_RSP_STATUS_OK;
+ void *pld;
+ int pll;
+
+ pll = msg->req.hdr.len - sizeof(msg->req.hdr);
+ pld = &msg->req.qw[1];
+ msg->rsp.hdr.qw = msg->req.hdr.qw;
+ /* default to no payload in response (if any) */
+ msg->rsp.hdr.len = sizeof(msg->req.hdr);
+ func = msg->dd->cport->handlers[msg->req.hdr.op_code];
+ if (func)
+ ret = func(msg->dd, msg->req.hdr.op_code, msg->req.hdr.sideband,
+ pld, pll, msg);
+ else
+ ret = inval_req(msg->dd, msg->req.hdr.op_code, msg->req.hdr.sideband,
+ pld, pll, msg);
+ if (msg->req.hdr.no_rsp) {
+ cwput(msg);
+ if (ret)
+ dd_dev_err(msg->dd, "Op %d %02x failed (%d)\n",
+ msg->req.hdr.op_code, msg->req.hdr.sideband, ret);
+ } else {
+ /* msg->rsp.qw[*] and msg->rsp.hdr.len have been updated */
+ ret = cport_send_rsp(msg, ret);
+ if (ret)
+ dd_dev_err(msg->dd, "Response send failed (%d)\n", ret);
+ }
+}
+
+/*
+ * Handler for MCTXT Inbox Full interrupt.
+ *
+ * Only one can be queued/run until JKR_MCTXT_INT_OUTBOX_EMPTY is cleared.
+ * Run in a workqueue (not interrupt context).
+ */
+static void cport_mctxt_fn(struct work_struct *work)
+{
+ struct hfi2_cport *cport = container_of(work, struct hfi2_cport, mctxt_work);
+ struct hfi2_devdata *dd = cport->dd;
+ int ret = 0;
+ int len;
+ u64 *ptr;
+ u32 i;
+ struct cport_work *msg;
+ union cport_header hdr;
+
+ /*
+ * CPORT output MCTXT is our input.
+ */
+ i = JKR_MCTXT_CPORT_OUT;
+ /*
+ * This header ignored:
+ * mhdr = read_csr(dd, CPORT_OUT_SCRATCH);
+ * assert(mhdr.PKT_LEN_BYTES == hdr.len);
+ */
+ hdr.qw = read_csr(dd, i);
+ i += sizeof(u64);
+ /* No need for atomics here, we are single threaded */
+ if (hdr.seq_no != cport->rseqno) {
+ dd_dev_info(dd, "Recv out of sequence: %d -> %d\n", cport->rseqno, hdr.seq_no);
+ cport->rseqno = hdr.seq_no;
+ }
+ cport->rseqno = (cport->rseqno + 1) & CPORT_SEQNO_MASK;
+ if (hdr.is_req) {
+ /* Request from CPORT, has no existing message context */
+ msg = cwalloc(CW_FLAG_RECV);
+ if (!msg) {
+ ret = -ENOMEM;
+ goto fail; /* drop message, with error */
+ }
+ ptr = &msg->req.qw[0];
+ } else {
+ /*
+ * Responses already have a 'msg', extra ref was already taken.
+ * Take an additional ref against possible race with timeout
+ * (cport_send_cancel()) between here and the up().
+ */
+ msg = cwget_xa(dd, hdr.tid);
+ if (!msg) {
+ ret = -ESRCH;
+ goto fail; /* drop message, with error */
+ }
+ ptr = &msg->rsp.qw[0];
+ /* assert msg->req.hdr ~= hdr */
+ }
+ *ptr++ = hdr.qw;
+ /* now copy payload into chosen buffer */
+ len = hdr.len - sizeof(hdr);
+ while (len > 0) {
+ *ptr++ = read_csr(dd, i);
+ i += sizeof(u64);
+ len -= sizeof(u64);
+ }
+ /*
+ * We are finished with the dd->cport->mctxt_work struct,
+ * and the MCTXT, so it can all be re-used now.
+ */
+ write_csr(dd, JKR_MCTXT_CPORT_INT_STATUS, JKR_MCTXT_INT_OUTBOX_EMPTY);
+
+ /* responses don't require any more work here - just wakeup requester */
+ if (!hdr.is_req) {
+ up(msg->sem);
+ cwput(msg);
+ return;
+ }
+ msg->dd = dd;
+ /* dispatch 'msg' request */
+ INIT_WORK(&msg->work, cport_req_fn);
+ /* don't care about locality */
+ queue_work(dd->hfi2_wq, &msg->work);
+ return;
+fail:
+ write_csr(dd, JKR_MCTXT_CPORT_INT_STATUS, JKR_MCTXT_INT_OUTBOX_EMPTY);
+ dd_dev_err(dd, "Dropping incoming CPORT message %016llx (%d)\n", hdr.qw, ret);
+}
+
+/*
+ * Handler for PF0 MCTXT interrupts.
+ *
+ * Called when one of the enabled MCTXT_PF0 conditions occurs.
+ * 'source' is always 0. Called in interrupt context.
+ *
+ * Since this interrupt is exclusive to MCTXT, there is no doubt
+ * about which transport to use (always is MCTXT).
+ */
+void is_cport_int(struct hfi2_devdata *dd, unsigned int source)
+{
+ u64 ints;
+
+ if (!dd->cport)
+ return;
+
+#ifdef CONFIG_HFI_CPORT_POLLING
+ ints = read_csr(dd, JKR_MCTXT_PF0_INT_STATUS);
+#else
+ ints = read_csr(dd, JKR_MCTXT_PF0_INT_STATUS_ENABLED);
+#endif
+ if (!ints) {
+ dd_dev_warn(dd, "MCTXT interrupt, but no status bits set\n");
+ return;
+ }
+ write_csr(dd, JKR_MCTXT_PF0_INT_ACK, ints);
+ if (ints & JKR_MCTXT_INT_INBOX_FULL)
+ queue_work(dd->hfi2_wq, &dd->cport->mctxt_work);
+ if (ints & JKR_MCTXT_INT_OUTBOX_EMPTY)
+ up(&dd->cport->outbox);
+}
+
+/***************************************************
+ * API for handling notifications from CPORT
+ */
+
+void *cport_resp_alloc(void *handle, int len)
+{
+ struct cport_work *msg = handle;
+
+ if (!msg || len <= 0 || len > CH_LEN_MAX)
+ return NULL;
+ msg->rsp.hdr.len = len + sizeof(msg->rsp.hdr);
+ return &msg->rsp.qw[1];
+}
+
+int cport_resp_set(void *handle, void *payload, int len)
+{
+ struct cport_work *msg = handle;
+
+ if (!msg || !payload || len <= 0 || len > CH_LEN_MAX)
+ return -EINVAL;
+ msg->rsp.hdr.len = len + sizeof(msg->rsp.hdr);
+ memcpy(&msg->rsp.qw[1], payload, len);
+ return 0;
+}
+
+int cport_register_cb(struct hfi2_devdata *dd, u8 op_start, u8 op_end, cport_handler func)
+{
+ int x;
+
+ if (op_start > op_end || op_start < 0 || op_end >= 256)
+ return -ERANGE;
+ if (!dd->cport)
+ return -EINVAL;
+
+ /* 'func' may be NULL, to unregister */
+ for (x = op_start; x <= op_end; ++x) {
+ dd->cport->handlers[x] = func;
+ }
+ return 0;
+}
+
+static int cport_ping(void *data)
+{
+ struct hfi2_devdata *dd = data;
+ char buf[16];
+ int len;
+ unsigned int num;
+ void *rspbuf;
+ int rsplen;
+ int rc;
+
+ while (!kthread_should_stop() && (num = atomic_read(&dd->cport->nping)) > 0) {
+ len = snprintf(buf, sizeof(buf), "ping %u", num);
+ rspbuf = NULL;
+ rc = cport_send_req(dd, CH_OP_PING, 0, buf, len,
+ &rspbuf, &rsplen, MAX_SCHEDULE_TIMEOUT);
+ if (rc < 0) {
+ dd_dev_info(dd, "CPORT \"%s\" error %d\n", buf, rc);
+ break;
+ }
+ dd_dev_info(dd, "CPORT \"%s\" -> %d \"%.*s\"\n",
+ buf, rc, rsplen, (char *)rspbuf);
+ kfree(rspbuf);
+ atomic_dec(&dd->cport->nping);
+ }
+ dd->cport->ping_th = NULL;
+ atomic_set(&dd->cport->nping, 0);
+ return 0;
+}
+
+int cport_ping_start(struct hfi2_devdata *dd, unsigned int count)
+{
+ int rc;
+
+ if (!count) {
+ if (dd->cport->ping_th)
+ kthread_stop(dd->cport->ping_th);
+ /* kthread will zero count when exiting */
+ else
+ atomic_set(&dd->cport->nping, 0);
+ return 0;
+ }
+ atomic_set(&dd->cport->nping, count);
+ if (dd->cport->ping_th)
+ return 0;
+
+ dd->cport->ping_th = kthread_create_on_node(cport_ping, dd, dd->node, "cport_ping");
+ if (IS_ERR(dd->cport->ping_th)) {
+ rc = PTR_ERR(dd->cport->ping_th);
+ dd->cport->ping_th = NULL;
+ dd_dev_err(dd, "Failed to create CPORT ping thread %d\n", rc);
+ return rc;
+ }
+ wake_up_process(dd->cport->ping_th);
+ return 0;
+}
+
+#ifdef CONFIG_HFI_CPORT_POLLING
+static int cport_poll(void *data)
+{
+ struct hfi2_devdata *dd = data;
+ u64 v;
+
+ while (!kthread_should_stop()) {
+ v = read_csr(dd, JKR_MCTXT_PF0_INT_STATUS);
+ if (v & 0xff)
+ is_cport_int(dd, 0);
+ fsleep(30);
+ }
+ return 0;
+}
+#endif
+
+/*
+ * Initialization/setup of MCTXT CPORT communications channel.
+ */
+int cport_init(struct hfi2_devdata *dd)
+{
+ struct hfi2_cport *cport;
+
+ if (dd->params->chip_type == CHIP_WFR)
+ return 0;
+
+ cport = kzalloc(sizeof(*cport), GFP_KERNEL);
+ if (!cport)
+ goto err1;
+
+ INIT_WORK(&cport->mctxt_work, cport_mctxt_fn);
+ xa_init_flags(&cport->tid_xa, XA_FLAGS_ALLOC);
+ xa_init_flags(&cport->trap_xa, XA_FLAGS_ALLOC);
+
+ /*
+ * Setting initial state can be problematic.
+ * We require that CPORT set JKR_MCTXT_INT_OUTBOX_EMPTY in
+ * JKR_MCTXT_PF0_INT_STATUS or we will never start sending.
+ * We also require that CPORT never set JKR_MCTXT_INT_OUTBOX_EMPTY
+ * gratuitously, or we get a semaphore count > 1 and will
+ * start overrunning MCTXT. Essentially, CPORT must set this
+ * exactly once when entering the "ready to receive" state
+ * (initially and after processing each message).
+ */
+ sema_init(&cport->outbox, 0);
+
+ cport->dd = dd;
+ dd->cport = cport;
+
+ cport_register_cb(dd, CH_OP_PING, CH_OP_PING, echo_req);
+
+#ifdef CONFIG_HFI_CPORT_POLLING
+ cport->poll_th = kthread_create_on_node(cport_poll, dd, dd->node, "cport_poll");
+ if (!cport->poll_th)
+ dd_dev_err(dd, "Failed to create CPORT polling thread\n");
+ else
+ wake_up_process(dd->cport->poll_th);
+#else
+ /* Enable intr source for MCTXT from CPORT (to PF0) */
+ write_csr(dd, JKR_MCTXT_PF0_INT_ENABLE,
+ JKR_MCTXT_INT_INBOX_FULL | JKR_MCTXT_INT_OUTBOX_EMPTY);
+ set_intr_bits(dd, JKR_MCTXT_CPORT_TO_PCIE_INT, JKR_MCTXT_CPORT_TO_PCIE_INT, true);
+#endif
+
+ /*
+ * Must reset/resync sequence numbers as CPORT is strictly enforcing
+ * sequence number order.
+ */
+ cport_send_notif(dd, CH_OP_PING, 0, NULL, 0);
+ return 0;
+
+err1:
+ return -ENOMEM;
+}
+
+/*
+ * Deinitialization of MCTXT CPORT communications channel.
+ */
+int cport_exit(struct hfi2_devdata *dd)
+{
+ if (!dd->cport)
+ return 0;
+
+ /* Disable intr source for MCTXT from CPORT (to PF0) */
+ set_intr_bits(dd, JKR_MCTXT_CPORT_TO_PCIE_INT, JKR_MCTXT_CPORT_TO_PCIE_INT, false);
+ write_csr(dd, JKR_MCTXT_PF0_INT_ENABLE, 0);
+ /* leave JKR_MCTXT_INT_OUTBOX_EMPTY set so that future users are ready-to-go */
+ write_csr(dd, JKR_MCTXT_PF0_INT_STATUS, JKR_MCTXT_INT_OUTBOX_EMPTY);
+#ifdef CONFIG_HFI_CPORT_POLLING
+ if (dd->cport->poll_th)
+ kthread_stop(dd->cport->poll_th);
+#endif
+ if (dd->cport->ping_th)
+ kthread_stop(dd->cport->ping_th);
+
+ cancel_work(&dd->cport->mctxt_work);
+
+ xa_destroy(&dd->cport->tid_xa);
+ xa_destroy(&dd->cport->trap_xa);
+ kfree(dd->cport);
+ dd->cport = NULL;
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/hfi2/mad.c b/drivers/infiniband/hw/hfi2/mad.c
new file mode 100644
index 000000000000..1a43c624429d
--- /dev/null
+++ b/drivers/infiniband/hw/hfi2/mad.c
@@ -0,0 +1,6055 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright(c) 2015-2018 Intel Corporation.
+ */
+
+#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 "hfi2.h"
+#include "file_ops.h"
+#include "chip_gen.h"
+#include "mad.h"
+#include "trace.h"
+#include "qp.h"
+#include "rdma/ib_sa.h"
+
+int cport_mad_to = 1;
+module_param_named(cport_mad_to, cport_mad_to, int, 0644);
+MODULE_PARM_DESC(cport_mad_to, "Timout for MADs to CPORT, seconds, default 1 (-1 = infinite)");
+
+/* offset from start of packet for the MAD header */
+#define MAD_9B_OFFSET (8 + 12 + 8) /* 9B LRH, BTH, DETH */
+#define MAD_16B_FM_OFFSET (16 + 8) /* 16B LRH, Mgmt L4 */
+#define MAD_16B_IB_OFFSET (16 + 12 + 8) /* 16B LRH, BTH, DETH */
+
+/* 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 hfi2_lookup_pkey_value(struct hfi2_ibport *ibp, int pkey_idx)
+{
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+
+ if (pkey_idx < ppd->dd->params->pkey_table_size)
+ return ppd->pkeys[pkey_idx];
+
+ return 0;
+}
+
+void hfi2_event_pkey_change(struct hfi2_devdata *dd, u32 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 hfi2_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 hfi2_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("hfi2: 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("hfi2: 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 hfi2_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 hfi2_update_sm_ah_attr(struct hfi2_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 hfi2_modify_qp0_ah(struct hfi2_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;
+ hfi2_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 *hfi2_create_qp0_ah(struct hfi2_ibport *ibp, u32 dlid)
+{
+ struct rdma_ah_attr attr;
+ struct ib_ah *ah = ERR_PTR(-EINVAL);
+ struct rvt_qp *qp0;
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ struct hfi2_devdata *dd = dd_from_ppd(ppd);
+ u32 port_num = ppd->port;
+
+ memset(&attr, 0, sizeof(attr));
+ attr.type = rdma_ah_find_type(&dd->verbs_dev.rdi.ibdev, port_num);
+ hfi2_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, 0);
+ rcu_read_unlock();
+ return ah;
+}
+
+static void send_trap(struct hfi2_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 = hfi2_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__, hfi2_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 = hfi2_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 hfi2_handle_trap_timer(struct timer_list *t)
+{
+ struct hfi2_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 hfi2_bad_pkey(struct hfi2_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 hfi2_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 hfi2_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num)
+{
+ struct trap_node *trap;
+ struct hfi2_ibdev *verbs_dev = dev_from_rdi(rdi);
+ struct hfi2_devdata *dd = dd_from_dev(verbs_dev);
+ struct hfi2_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 hfi2_sys_guid_chg(struct hfi2_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_hfi2_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 hfi2_node_desc_chg(struct hfi2_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,
+ u32 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct opa_node_info *ni;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ u32 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), HFI2_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), HFI2_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_hfi2_sys_image_guid;
+ ni->node_guid = ibdev->node_guid;
+ ni->partition_cap = cpu_to_be16(hfi2_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,
+ u32 port)
+{
+ struct ib_node_info *nip = (struct ib_node_info *)&smp->data;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ u32 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), HFI2_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), HFI2_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_hfi2_sys_image_guid;
+ nip->node_guid = ibdev->node_guid;
+ nip->partition_cap = cpu_to_be16(hfi2_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 hfi2_pportdata *ppd, u32 w)
+{
+ (void)hfi2_set_ib_cfg(ppd, HFI2_IB_CFG_LWID_ENB, w);
+}
+
+static void set_link_width_downgrade_enabled(struct hfi2_pportdata *ppd, u32 w)
+{
+ (void)hfi2_set_ib_cfg(ppd, HFI2_IB_CFG_LWID_DG_ENB, w);
+}
+
+static void set_link_speed_enabled(struct hfi2_pportdata *ppd, u32 s)
+{
+ (void)hfi2_set_ib_cfg(ppd, HFI2_IB_CFG_SPD_ENB, s);
+}
+
+static int check_mkey(struct hfi2_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;
+ fallthrough;
+ case IB_MGMT_METHOD_SET:
+ case IB_MGMT_METHOD_TRAP_REPRESS:
+ if (ibp->rvp.mkey_violations != 0xFFFF)
+ ++ibp->rvp.mkey_violations;
+ if (!ibp->rvp.mkey_lease_timeout &&
+ ibp->rvp.mkey_lease_period)
+ ibp->rvp.mkey_lease_timeout = jiffies +
+ ibp->rvp.mkey_lease_period * HZ;
+ /* Generate a trap notice. */
+ bad_mkey(ibp, mad, mkey, dr_slid, return_path,
+ hop_cnt);
+ ret = 1;
+ }
+ }
+
+ return ret;
+}
+
+static int __subn_get_opa_portinfo(struct opa_smp *smp, u32 am, u8 *data,
+ struct ib_device *ibdev, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ int i;
+ struct hfi2_devdata *dd;
+ struct hfi2_pportdata *ppd;
+ struct hfi2_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(ppd->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 hfi2_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(ppd->vld[i].mtu, HFI2_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(ppd->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 = hfi2_get_ib_cfg(ppd, HFI2_IB_CFG_OP_VLS);
+ pi->partenforce_filterraw |=
+ (ppd->linkinit_reason & OPA_PI_MASK_LINKINIT_REASON);
+ if (ppd->part_enforce & HFI2_PART_ENFORCE_IN)
+ pi->partenforce_filterraw |= OPA_PI_MASK_PARTITION_ENFORCE_IN;
+ if (ppd->part_enforce & HFI2_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)hfi2_get_ib_cfg(ppd, HFI2_IB_CFG_VL_HIGH_CAP);
+ pi->vl.arb_low_cap = (u8)hfi2_get_ib_cfg(ppd, HFI2_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(hfi2_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;
+ /* use the cached round trip count */
+ tmp = ppd->link_ltp_rtt;
+
+ /*
+ * 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 for any block
+ * @dd: the hfi2_ib device
+ * @port: the IB port number
+ * @start_block: starting block to read
+ * @num_blocks: number of blocks to read
+ * @pkeys: the pkey table is placed here
+ *
+ * Copy out the pkeys - the keys are endianized for the host.
+ */
+static int get_pkeys(struct hfi2_devdata *dd, u32 port, u32 start_block,
+ u32 num_blocks, u16 *pkeys)
+{
+ struct hfi2_pportdata *ppd = dd->pport + (port - 1);
+ u32 start_index;
+ u32 end_index;
+
+ /* calculate the indices affected */
+ start_index = start_block * OPA_PARTITION_TABLE_BLK_SIZE;
+ end_index = min_t(u32, dd->params->pkey_table_size,
+ start_index + (num_blocks * OPA_PARTITION_TABLE_BLK_SIZE));
+
+ memcpy(pkeys, &ppd->pkeys[start_index],
+ (end_index - start_index) * sizeof(ppd->pkeys[0]));
+
+ return 0;
+}
+
+static int __subn_get_opa_pkeytable(struct opa_smp *smp, u32 am, u8 *data,
+ struct ib_device *ibdev, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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;
+ u32 n_blocks_avail;
+ u32 npkeys = hfi2_get_npkeys(dd);
+ u32 num_req_keys;
+ 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 = DIV_ROUND_UP(npkeys, OPA_PARTITION_TABLE_BLK_SIZE);
+
+ num_req_keys = n_blocks_req * OPA_PARTITION_TABLE_BLK_SIZE;
+ size = num_req_keys * 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 current pkeys */
+ get_pkeys(dd, port, start_block, n_blocks_req, q);
+ /* make keys big endian */
+ for (i = 0; i < num_req_keys; i++)
+ p[i] = cpu_to_be16(q[i]);
+ if (resp_len)
+ *resp_len += size;
+
+ 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 hfi2_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) {
+ ppd_dev_warn(ppd, "invalid logical state transition %s -> %s\n",
+ ib_port_state_to_str(logical_old),
+ ib_port_state_to_str(logical_new));
+ return ret;
+ }
+
+ ret = physical_transition_allowed(physical_old, physical_new);
+ physical_allowed = ret;
+
+ if (ret == HFI_TRANSITION_DISALLOWED ||
+ ret == HFI_TRANSITION_UNDEFINED) {
+ ppd_dev_warn(ppd, "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 hfi2_pportdata *ppd, struct opa_smp *smp,
+ u32 logical_state, u32 phys_state, int local_mad)
+{
+ struct hfi2_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)){
+ ppd_dev_warn(ppd, "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 {
+ ppd_dev_warn(ppd, "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 >
+ HFI2_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
+ ppd->offline_disabled_reason ==
+ HFI2_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
+ ppd->offline_disabled_reason =
+ HFI2_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 {
+ ppd_dev_warn(ppd, "SubnSet(OPA_PortInfo) Cannot move to Active with NeighborNormal 0\n");
+ smp->status |= IB_SMP_INVALID_FIELD;
+ }
+ break;
+ default:
+ ppd_dev_warn(ppd, "SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
+ logical_state);
+ smp->status |= IB_SMP_INVALID_FIELD;
+ }
+
+ return 0;
+}
+
+/*
+ * Clone of set_port_states() that only updates device structures, does
+ * not touch hardware. For adapters with a CPORT that handles the hardware.
+ * The CPORT is never expected to send bad information.
+ *
+ * Note that intermediate states may be skipped, depending on how/when CPORT
+ * notifies the driver.
+ */
+static void cport_set_port_states(struct hfi2_pportdata *ppd, struct opa_port_info *pi,
+ u32 logical_state, u32 phys_state)
+{
+ u32 link_state;
+ int ret;
+ u32 cur_lstate;
+
+ ret = port_states_transition_allowed(ppd, logical_state, phys_state);
+
+ /*
+ * Logical state changes are summarized in OPAv1g1 spec.,
+ * Table 9-12; physical state changes are summarized in
+ * OPAv1g1 spec., Table 6.4.
+ */
+ if (logical_state < IB_PORT_INIT) {
+ /* this must be the new state, so do not ever skip processing */
+ if (logical_state == IB_PORT_NOP && phys_state == IB_PORTPHYSSTATE_NOP) {
+ link_state = HLS_DN_OFFLINE;
+ } else 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 {
+ /* invalid - not possible? pick something */
+ link_state = HLS_DN_DOWNDEF;
+ }
+
+ 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.
+ */
+ cport_set_link_state(ppd, pi, HLS_DN_OFFLINE);
+ cport_start_link(ppd, pi);
+ } else {
+ cport_set_link_state(ppd, pi, link_state);
+ }
+ if (link_state == HLS_DN_DISABLE &&
+ (ppd->offline_disabled_reason >
+ HFI2_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED) ||
+ ppd->offline_disabled_reason ==
+ HFI2_ODR_MASK(OPA_LINKDOWN_REASON_NONE)))
+ ppd->offline_disabled_reason =
+ HFI2_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
+ goto done;
+ }
+ cur_lstate = driver_lstate(ppd);
+ if (logical_state > IB_PORT_ACTIVE) {
+ ppd_dev_warn(ppd, "%s: SubnSet(OPA_PortInfo) invalid logical state 0x%x\n",
+ __func__, logical_state);
+ goto done;
+ }
+ /* make certain all intermediate states are executed */
+ if (logical_state < cur_lstate) {
+ ppd_dev_warn(ppd, "%s: attempted move to lower LinkUp state\n", __func__);
+ goto done;
+ }
+ if (logical_state >= IB_PORT_INIT && cur_lstate < IB_PORT_INIT) {
+ ret = cport_set_link_state(ppd, pi, HLS_UP_INIT);
+ if (ret)
+ ppd_dev_warn(ppd, "%s: cport_set_link_state INIT failed %d\n", __func__, ret);
+ }
+ if (logical_state >= IB_PORT_ARMED && cur_lstate < IB_PORT_ARMED) {
+ ret = cport_set_link_state(ppd, pi, HLS_UP_ARMED);
+ if (ret)
+ ppd_dev_warn(ppd, "%s: cport_set_link_state ARMED failed %d\n", __func__, ret);
+ }
+ if (logical_state >= IB_PORT_ACTIVE && cur_lstate < IB_PORT_ACTIVE) {
+ if (!ppd->neighbor_normal)
+ ppd_dev_warn(ppd, "%s: Should not move to Active with NeighborNormal 0?\n",
+ __func__);
+ ret = cport_set_link_state(ppd, pi, HLS_UP_ACTIVE);
+ if (ret)
+ ppd_dev_warn(ppd, "%s: cport_set_link_state ACTIVE failed %d\n", __func__, ret);
+ }
+done:
+ ;
+}
+
+/*
+ * 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, u32 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 hfi2_devdata *dd;
+ struct hfi2_pportdata *ppd;
+ struct hfi2_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) ||
+ (hfi2_is_16B_mcast(lid))) {
+ smp->status |= IB_SMP_INVALID_FIELD;
+ ppd_dev_warn(ppd, "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)
+ hfi2_set_uevent_bits(ppd, _HFI2_EVENT_LID_CHANGE_BIT);
+ if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
+ hfi2_set_uevent_bits(ppd, _HFI2_EVENT_LMC_CHANGE_BIT);
+ hfi2_set_lid(ppd, lid, pi->mkeyprotect_lmc & OPA_PI_MASK_LMC);
+ event.event = IB_EVENT_LID_CHANGE;
+ ib_dispatch_event(&event);
+
+ if (HFI2_PORT_GUID_INDEX + 1 < HFI2_GUIDS_PER_PORT) {
+ /* Manufacture GID from LID to support extended
+ * addresses
+ */
+ ppd->guids[HFI2_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) ||
+ (hfi2_is_16B_mcast(smlid))) {
+ smp->status |= IB_SMP_INVALID_FIELD;
+ ppd_dev_warn(ppd, "SubnSet(OPA_PortInfo) smlid invalid 0x%x\n", smlid);
+ } else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
+ ppd_dev_warn(ppd, "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)
+ hfi2_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)hfi2_set_ib_cfg(ppd, HFI2_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(ppd->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) {
+ ppd_dev_warn(ppd, "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 = hfi2_max_mtu; /* use a valid MTU */
+ }
+ if (ppd->vld[i].mtu != mtu) {
+ ppd_dev_info(ppd,
+ "MTU change on vl %d from %d to %d\n",
+ i, ppd->vld[i].mtu, mtu);
+ ppd->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 (ppd->vld[15].mtu != mtu) {
+ dd_dev_info(dd,
+ "MTU change on vl 15 from %d to %d\n",
+ ppd->vld[15].mtu, mtu);
+ ppd->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) {
+ ppd_dev_warn(ppd, "SubnSet(OPA_PortInfo) VL's supported invalid %d\n",
+ pi->operational_vls);
+ smp->status |= IB_SMP_INVALID_FIELD;
+ } else {
+ if (hfi2_set_ib_cfg(ppd, HFI2_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 any block
+ * @dd: the hfi2_ib device
+ * @port: the IB port number
+ * @start_block: starting block to modify
+ * @num_blocks: number of blocks to modify
+ * @pkeys: the PKEY table
+ *
+ * It is expected that the incoming pkeys are endianized for the host.
+ * Return 0 on success, non-zero on error.
+ */
+static int set_pkeys(struct hfi2_devdata *dd, u32 port, u32 start_block,
+ u32 num_blocks, u16 *pkeys)
+{
+ struct hfi2_pportdata *ppd = dd->pport + (port - 1);
+ int i;
+ int changed = 0;
+ int update_includes_mgmt_partition = 0;
+ u32 start_index;
+ u32 end_index;
+
+ /* calculate the indices affected */
+ start_index = start_block * OPA_PARTITION_TABLE_BLK_SIZE;
+ end_index = min_t(u32, dd->params->pkey_table_size,
+ start_index + (num_blocks * OPA_PARTITION_TABLE_BLK_SIZE));
+
+ /*
+ * Block 0 must always contain the limited management key.
+ */
+ if (start_block == 0) {
+ int b0_end_index = min_t(int, OPA_PARTITION_TABLE_BLK_SIZE,
+ dd->params->pkey_table_size);
+
+ for (i = 0; i < b0_end_index; i++) {
+ if (pkeys[i] == LIM_MGMT_P_KEY) {
+ update_includes_mgmt_partition = 1;
+ break;
+ }
+ }
+
+ if (!update_includes_mgmt_partition)
+ return 1;
+ }
+
+ for (i = start_index; i < end_index; i++) {
+ u16 key = pkeys[i - start_index];
+ 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)hfi2_set_ib_cfg(ppd, HFI2_IB_CFG_PKEYS, 0);
+ hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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;
+ u32 n_blocks_avail;
+ u32 npkeys = hfi2_get_npkeys(dd);
+ u32 size = 0;
+
+ if (n_blocks_sent == 0) {
+ pr_warn("OPA Get PKey AM Invalid : P = %u; 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 = DIV_ROUND_UP(npkeys, OPA_PARTITION_TABLE_BLK_SIZE);
+
+ 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 (set_pkeys(dd, port, start_block, n_blocks_sent, 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 hfi2_pportdata *ppd, void *data)
+{
+ struct hfi2_devdata *dd = ppd->dd;
+ u64 *val = data;
+ int pidx = ppd->hw_pidx;
+
+ filter_sc2vlt(data, true);
+
+ write_eport_csr(dd, pidx, dd->params->send_sc2vlt0_reg, *val++);
+ write_eport_csr(dd, pidx, dd->params->send_sc2vlt1_reg, *val++);
+ write_eport_csr(dd, pidx, dd->params->send_sc2vlt2_reg, *val++);
+ write_eport_csr(dd, pidx, dd->params->send_sc2vlt3_reg, *val++);
+ write_seqlock_irq(&ppd->sc2vl_lock);
+ memcpy(ppd->sc2vl, data, sizeof(ppd->sc2vl));
+ write_sequnlock_irq(&ppd->sc2vl_lock);
+ return 0;
+}
+
+int get_sc2vlt_tables(struct hfi2_pportdata *ppd, void *data)
+{
+ struct hfi2_devdata *dd = ppd->dd;
+ u64 *val = (u64 *)data;
+ int pidx = ppd->hw_pidx;
+
+ *val++ = read_eport_csr(dd, pidx, dd->params->send_sc2vlt0_reg);
+ *val++ = read_eport_csr(dd, pidx, dd->params->send_sc2vlt1_reg);
+ *val++ = read_eport_csr(dd, pidx, dd->params->send_sc2vlt2_reg);
+ *val++ = read_eport_csr(dd, pidx, dd->params->send_sc2vlt3_reg);
+
+ 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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 */
+ hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ u32 n_blocks = OPA_AM_NBLK(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_pportdata *ppd = &dd->pport[port - 1];
+ 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(ppd, 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ u32 n_blocks = OPA_AM_NBLK(am);
+ int async_update = OPA_AM_ASYNC(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ void *vp = (void *)data;
+ struct hfi2_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(ppd, 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ u32 n_blocks = OPA_AM_NPORT(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ u32 n_blocks = OPA_AM_NPORT(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_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, u32 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 hfi2_ibport *ibp;
+ struct hfi2_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, u32 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 hfi2_ibport *ibp;
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_pportdata *ppd = dd->pport + (port - 1);
+ u32 addr = OPA_AM_CI_ADDR(am);
+ u32 len = OPA_AM_CI_LEN(am) + 1;
+ int ret;
+
+ if (ppd->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(ppd, 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, u32 port, u32 *resp_len,
+ u32 max_len)
+{
+ u32 num_ports = OPA_AM_NPORT(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_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, u32 port, u32 *resp_len,
+ u32 max_len)
+{
+ u32 num_ports = OPA_AM_NPORT(am);
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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:
+ ppd_dev_warn(ppd, "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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_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:
+ case OPA_VLARB_PREEMPT_MATRIX:
+ smp->status |= IB_SMP_UNSUP_METH_ATTR;
+ break;
+ default:
+ ppd_dev_warn(ppd, "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[]; /* 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[];
+};
+
+#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[];
+ /* array size defined by #bits set in vl_select_mask*/
+ } port;
+};
+
+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[];
+ /* array size defined by #bits set in vl_select_mask */
+ } port;
+};
+
+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;
+};
+
+/* 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 hfi2_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 hfi2_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,
+ u32 port, u32 *resp_len)
+{
+ struct opa_port_status_req *req =
+ (struct opa_port_status_req *)pmp->data;
+ struct hfi2_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;
+ u32 port_num = req->port_num;
+ u8 num_vls = hweight64(vl_select_mask);
+ struct _vls_pctrs *vlinfo;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ int vfi;
+ u64 tmp, tmp2;
+ u16 link_width;
+ u16 link_speed;
+
+ response_data_size = struct_size(rsp, vls, num_vls);
+ 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));
+
+ dd->params->read_link_quality(ppd, &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_port_cntr(ppd, 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, u32 port,
+ u8 res_lli, u8 res_ler)
+{
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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_port_cntr(ppd, 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 hfi2_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 hfi2_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,
+ u32 port, u32 *resp_len)
+{
+ struct opa_port_data_counters_msg *req =
+ (struct opa_port_data_counters_msg *)pmp->data;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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;
+ u32 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 = struct_size(req, port.vls, num_vls);
+
+ 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;
+ 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).
+ */
+ dd->params->read_link_quality(ppd, &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, u32 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, u32 port)
+{
+ u64 tmp, tmp2;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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_port_cntr(ppd, C_RCV_OVF, CNTR_INVALID_VL));
+}
+
+static int pma_get_opa_porterrors(struct opa_pma_mad *pmp,
+ struct ib_device *ibdev,
+ u32 port, u32 *resp_len)
+{
+ size_t response_data_size;
+ struct _port_ectrs *rsp;
+ u32 port_num;
+ struct opa_port_error_counters64_msg *req;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ u32 num_ports;
+ u8 num_pslm;
+ u8 num_vls;
+ struct hfi2_ibport *ibp;
+ struct hfi2_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 = struct_size(req, port.vls, num_vls);
+
+ 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;
+
+ 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, u32 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,
+ u32 port, u32 *resp_len)
+{
+ size_t response_data_size;
+ struct _port_ei *rsp;
+ struct opa_port_error_info_msg *req;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ u64 port_mask;
+ u32 num_ports;
+ u32 port_num;
+ u8 num_pslm;
+ u64 reg;
+
+ req = (struct opa_port_error_info_msg *)pmp->data;
+ rsp = &req->port;
+
+ 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_iport_csr(dd, ppd->hw_pidx, dd->params->rcv_err_info_reg);
+ 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,
+ u32 port, u32 *resp_len)
+{
+ struct opa_clear_port_status *req =
+ (struct opa_clear_port_status *)pmp->data;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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_port_cntr(ppd, C_RCV_OVF, CNTR_INVALID_VL, 0);
+ ppd->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,
+ u32 port, u32 *resp_len)
+{
+ struct _port_ei *rsp;
+ struct opa_port_error_info_msg *req;
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ u64 port_mask;
+ u32 num_ports;
+ u32 port_num;
+ u8 num_pslm;
+ u32 error_info_select;
+
+ req = (struct opa_port_error_info_msg *)pmp->data;
+ rsp = &req->port;
+
+ 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_iport_csr(dd, ppd->hw_pidx, dd->params->rcv_err_info_reg,
+ 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct opa_congestion_info_attr *p =
+ (struct opa_congestion_info_attr *)data;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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,
+ u32 port, u32 *resp_len, u32 max_len)
+{
+ int i;
+ struct opa_congestion_setting_attr *p =
+ (struct opa_congestion_setting_attr *)data;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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 hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct opa_congestion_setting_attr *p =
+ (struct opa_congestion_setting_attr *)data;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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_hfi2_cong_log(struct opa_smp *smp, u32 am,
+ u8 *data, struct ib_device *ibdev,
+ u32 port, u32 *resp_len, u32 max_len)
+{
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ struct opa_hfi2_cong_log *cong_log = (struct opa_hfi2_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_hfi2_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_hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct ib_cc_table_attr *cc_table_attr =
+ (struct ib_cc_table_attr *)data;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct ib_cc_table_attr *p = (struct ib_cc_table_attr *)data;
+ struct hfi2_ibport *ibp = to_iport(ibdev, port);
+ struct hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_pportdata *ppd = &dd->pport[port - 1];
+ 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 hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ struct hfi2_pportdata *ppd = &dd->pport[port - 1];
+ 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)
+ dd->params->start_led_override(ppd, 2000, 1500);
+ else
+ dd->params->shutdown_led_override(ppd);
+
+ 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, u32 port,
+ u32 *resp_len, u32 max_len)
+{
+ int ret;
+ struct hfi2_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_hfi2_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, u32 port,
+ u32 *resp_len, u32 max_len, int local_mad)
+{
+ int ret;
+ struct hfi2_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, u32 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, u32 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 hfi2_pportdata *ppd)
+{
+ struct hfi2_devdata *dd = ppd->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_port_cntr(ppd, C_RCV_OVF, CNTR_INVALID_VL, 0);
+ ppd->rcv_ovfl_cnt = 0;
+ dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK;
+}
+
+static int is_full_mgmt_pkey_in_table(struct hfi2_ibport *ibp)
+{
+ unsigned int i;
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+
+ for (i = 0; i < ppd->dd->params->pkey_table_size; ++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 hfi2_ibport *ibp, const struct opa_mad *mad,
+ const struct ib_wc *in_wc)
+{
+ struct hfi2_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 hfi2_ibport *ibp,
+ const struct ib_wc *in_wc)
+{
+ struct hfi2_pportdata *ppd = ppd_from_ibp(ibp);
+ u16 pkey;
+
+ if (in_wc->pkey_index >= ppd->dd->params->pkey_table_size)
+ 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;
+}
+
+/**
+ * hfi2_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 hfi2_pkey_validation_pma(struct hfi2_ibport *ibp,
+ const struct opa_mad *in_mad,
+ const struct ib_wc *in_wc)
+{
+ u16 pkey_value = hfi2_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,
+ u32 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 hfi2_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,
+ u32 port, const struct ib_mad *in_mad,
+ struct ib_mad *out_mad)
+{
+ struct ib_smp *smp = (struct ib_smp *)out_mad;
+ struct hfi2_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, u32 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, u32 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 hfi2_process_opa_mad(struct ib_device *ibdev, int mad_flags,
+ u32 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 hfi2_ibport *ibp = to_iport(ibdev, port);
+
+ pkey_idx = hfi2_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY);
+ if (pkey_idx < 0) {
+ pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n",
+ hfi2_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 = hfi2_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 hfi2_process_ib_mad(struct ib_device *ibdev, int mad_flags, u32 port,
+ const struct ib_wc *in_wc,
+ const struct ib_grh *in_grh,
+ const struct ib_mad *in_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;
+}
+
+
+#define OPA_ATTRIB_ID_MCTP_OVER_MAD cpu_to_be16(0xff30)
+#define OPA_ATTRIB_MOD_MCTP_INCOMING cpu_to_be32(0x0001)
+#define CH_LEN_MAX (2048 - 8)
+/*
+ * Send a MAD to CPORT over MCTXT as a pass-through.
+ * We always use 9B for now.
+ */
+static int cport_send_only_mad(struct hfi2_devdata *dd, u8 sb, const void *mad, int len)
+{
+ u8 *buf;
+ int size = len + MAD_9B_OFFSET;
+ int ret;
+
+ if (size > CH_LEN_MAX) {
+ /* too big for MCTXT - truncate */
+ return -EFBIG;
+ }
+ buf = kzalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ memcpy(buf + MAD_9B_OFFSET, mad, size - MAD_9B_OFFSET);
+ ((struct ib_header *)buf)->u.oth.u.ud.deth[1] = cpu_to_be32(2);
+ ret = cport_send_notif(dd, CH_OP_MAD_9B, sb, buf, size);
+ kfree(buf);
+ return ret;
+}
+
+/*
+ * Send a MAD to CPORT over MCTXT and wait for response.
+ * We always use 9B.
+ */
+int cport_send_recv_mad(struct hfi2_devdata *dd, u8 sb,
+ const void *mad, int len,
+ void *omad, size_t *omad_len)
+{
+ u8 *buf;
+ int size = len + MAD_9B_OFFSET;
+ int ret;
+ void *rsp = NULL;
+ int rsp_len = 0;
+ long to;
+
+ to = cport_mad_to <= 0 ? MAX_SCHEDULE_TIMEOUT : cport_mad_to * HZ;
+ if (size > CH_LEN_MAX) {
+ /* too big for MCTXT - truncate */
+ size = CH_LEN_MAX;
+ }
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ memcpy(buf + MAD_9B_OFFSET, mad, size - MAD_9B_OFFSET);
+ ((struct ib_header *)buf)->u.oth.u.ud.deth[1] = cpu_to_be32(2);
+
+ ret = cport_send_req(dd, CH_OP_MAD_9B, sb, buf, size, &rsp, &rsp_len, to);
+ kfree(buf);
+ if (ret)
+ goto out;
+ if (rsp_len < MAD_9B_OFFSET) {
+ ret = -EINVAL;
+ goto out;
+ }
+ rsp_len -= MAD_9B_OFFSET;
+ if (rsp_len > *omad_len) {
+ dd_dev_warn(dd, "CPORT response length 0x%x > 0x%lx, truncating\n",
+ rsp_len, *omad_len);
+ rsp_len = *omad_len;
+ }
+ memcpy(omad, rsp + MAD_9B_OFFSET, rsp_len);
+ *omad_len = rsp_len;
+out:
+ kfree(rsp);
+ return ret;
+}
+
+/**
+ * cport_process_mad - redirect an incoming MAD packet to CPORT for processing
+ * @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
+ * @out_mad_size: size of the outgoing MAD reply
+ * @out_mad_pkey_index: used to apss back the packet key index
+ */
+int cport_process_mad(struct ib_device *ibdev, int mad_flags, u32 port,
+ const struct ib_wc *in_wc, const struct ib_grh *in_grh,
+ const struct ib_mad *in_mad, struct ib_mad *out_mad,
+ size_t *out_mad_size, u16 *out_mad_pkey_index)
+{
+ struct hfi2_devdata *dd = dd_from_ibdev(ibdev);
+ u8 sb = port; /* 1.. */
+ int mad_len;
+ int ret;
+ bool pass = false;
+ int mad_result;
+
+ switch (in_mad->mad_hdr.mgmt_class) {
+ case IB_MGMT_CLASS_SUBN_LID_ROUTED:
+ case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
+ if (in_mad->mad_hdr.base_version == OPA_MGMT_BASE_VERSION) {
+ if (in_mad->mad_hdr.attr_id == OPA_ATTRIB_ID_MCTP_OVER_MAD) {
+ if (in_mad->mad_hdr.attr_mod & OPA_ATTRIB_MOD_MCTP_INCOMING) {
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ goto done;
+ }
+ pass = (in_mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP);
+ goto pass_thru;
+ }
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP ||
+ in_mad->mad_hdr.method == IB_MGMT_METHOD_REPORT ||
+ in_mad->mad_hdr.method == IB_MGMT_METHOD_REPORT_RESP ||
+ in_mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP) {
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ goto done;
+ }
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) {
+ /* Need this to prevent TRAP storms */
+ return hfi2_process_mad(ibdev, mad_flags, port,
+ in_wc, in_grh,
+ in_mad, out_mad, out_mad_size,
+ out_mad_pkey_index);
+ }
+ }
+ break; /* pass to CPORT */
+ case IB_MGMT_CLASS_PERF_MGMT:
+ break; /* pass to CPORT */
+ default:
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ goto done;
+ }
+ /* short-circuit all responses - no processing needed */
+ if (ib_response_mad(&in_mad->mad_hdr)) {
+ /*
+ * The ib_mad module will call us to process responses before
+ * checking for other consumers. Tell the caller to process
+ * it normally.
+ */
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ goto done;
+ }
+pass_thru:
+ /*
+ * in order to pass a MAD over MCTXT, we will need to
+ * construct a "fake" header. We don't know what minimal
+ * data is required by CPORT, if any, in this header. See
+ * DN0823 sections 3.8 and 3.9.
+ *
+ * The alternative is to pass the MAD to CPORT using a loopback
+ * port.
+ *
+ * Can this routine sleep? Regardless of which method passes
+ * the MAD to CPORT, we need to wait for the response.
+ */
+ if (in_mad->mad_hdr.base_version == OPA_MGMT_BASE_VERSION)
+ mad_len = in_wc ? in_wc->byte_len : sizeof(struct opa_mad);
+ else
+ mad_len = sizeof(struct ib_mad);
+
+ if (pass) {
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ ret = cport_send_only_mad(dd, sb, in_mad, mad_len);
+ if (ret)
+ mad_result = IB_MAD_RESULT_FAILURE;
+ return mad_result;
+ }
+ ret = cport_send_recv_mad(dd, sb, in_mad, mad_len, out_mad, out_mad_size);
+ if (ret) {
+ mad_result = IB_MAD_RESULT_FAILURE;
+ goto done;
+ }
+ if (*out_mad_size > 0) {
+ mad_result = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
+ } else {
+ mad_result = IB_MAD_RESULT_SUCCESS;
+ }
+done:
+ return mad_result;
+}
+
+/**
+ * hfi2_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
+ * @out_mad_size: size of the outgoing MAD reply
+ * @out_mad_pkey_index: used to apss back the packet key index
+ *
+ * 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 hfi2_process_mad(struct ib_device *ibdev, int mad_flags, u32 port,
+ const struct ib_wc *in_wc, const struct ib_grh *in_grh,
+ const struct ib_mad *in_mad, struct ib_mad *out_mad,
+ size_t *out_mad_size, u16 *out_mad_pkey_index)
+{
+ int ret;
+
+ switch (in_mad->mad_hdr.base_version) {
+ case OPA_MGMT_BASE_VERSION:
+ ret = hfi2_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);
+ break;
+ case IB_MGMT_BASE_VERSION:
+ ret = hfi2_process_ib_mad(ibdev, mad_flags, port, in_wc,
+ in_grh, in_mad, out_mad);
+ break;
+ default:
+ ret = IB_MAD_RESULT_FAILURE;
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * The driver received a GET or SET NODE_DESC from CPORT.
+ * Currently, we only tell CPORT what the NodedDescription should be,
+ * according to the IB device. We don't allow anyone to change that.
+ */
+static int cport_do_opa_nodedesc(struct hfi2_pportdata *ppd,
+ struct opa_smp *smp,
+ u8 *data)
+{
+ struct hfi2_devdata *dd = ppd->dd;
+ struct opa_node_description *nd = (struct opa_node_description *)data;
+ struct hfi2_ibdev *dev = &dd->verbs_dev;
+ struct ib_device *ibdev = &dev->rdi.ibdev;
+
+ memcpy(nd->data, ibdev->node_desc, sizeof(nd->data));
+ return 0;
+}
+
+static int cport_set_opa_nodeinfo(struct hfi2_pportdata *ppd,
+ struct opa_smp *smp,
+ u8 *data)
+{
+ struct opa_node_info *ni = (struct opa_node_info *)data;
+
+ ni->system_image_guid = ib_hfi2_sys_image_guid;
+ return 0;
+}
+
+/*
+ * Take a GET_RESP PORT_INFO MAD and use it to update the hfi2 device data structures.
+ * The entire MAD is referenced through 'smp'.
+ */
+int update_from_opa_portinfo(struct hfi2_pportdata *ppd,
+ struct opa_smp *smp,
+ struct opa_port_info *pi)
+{
+ struct hfi2_devdata *dd = ppd->dd;
+ struct ib_device *ibdev = &dd->verbs_dev.rdi.ibdev;
+ struct ib_event event;
+ struct hfi2_ibport *ibp = &ppd->ibport_data;
+ u32 smlid;
+ u32 lid;
+ u8 ls_old, ls_new, ps_new;
+ u8 lmc;
+ u8 clientrereg;
+ u8 vls;
+ u8 msl;
+ u8 crc_enabled;
+ unsigned long flags;
+ int i;
+ u16 lse, lwe, mtu;
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 start_of_sm_config = OPA_AM_START_SM_CFG(am);
+
+ /*
+ * This code is modeled after __subn_set_opa_portinfo(), eliminating
+ * things that attempt to manipulate hardware or are otherwise handled
+ * by CPORT now. This routine DOES NOT change the port state in
+ * hardware or on the fabric, it simply makes the driver "view"
+ * match what CPORT tells us via an OPA_ATTRIB_ID_PORT_INFO MAD.
+ * It also implicitly trusts the information provided by CPORT.
+ */
+
+ lid = be32_to_cpu(pi->lid);
+ smlid = be32_to_cpu(pi->sm_lid);
+ ls_old = driver_lstate(ppd);
+ clientrereg = (pi->clientrereg_subnettimeout &
+ OPA_PI_MASK_CLIENT_REREGISTER);
+
+ event.device = ibdev;
+ event.element.port_num = ppd->port;
+
+ 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);
+
+ /* Refresh ipoib with new subnet prefixes from updated ib_gid_table */
+ event.event = IB_EVENT_CLIENT_REREGISTER;
+ ib_dispatch_event(&event);
+ }
+ ibp->rvp.mkey_lease_period = be16_to_cpu(pi->mkey_lease_period);
+
+ lmc = pi->mkeyprotect_lmc & OPA_PI_MASK_LMC;
+ if (ppd->lid != lid || ppd->lmc != lmc) {
+ ppd_dev_info(ppd, "port %d: setting LID/LMC 0x%x/0x%x\n",
+ ppd->port, lid, lmc);
+ if (ppd->lid != lid)
+ hfi2_set_uevent_bits(ppd, _HFI2_EVENT_LID_CHANGE_BIT);
+ if (ppd->lmc != (pi->mkeyprotect_lmc & OPA_PI_MASK_LMC))
+ hfi2_set_uevent_bits(ppd, _HFI2_EVENT_LMC_CHANGE_BIT);
+ /* relevant parts of hfi2_set_lid() */
+ ppd->lid = lid;
+ ppd->lmc = lmc;
+ sdma_update_lmc(dd, ~((1U << lmc) - 1),
+ lid >= be16_to_cpu(IB_MULTICAST_LID_BASE) ? 0 : lid);
+ /* ppd_dev_info(ppd, "got a lid: 0x%x\n", lid); */
+ event.event = IB_EVENT_LID_CHANGE;
+ ib_dispatch_event(&event);
+
+ if (HFI2_PORT_GUID_INDEX + 1 < HFI2_GUIDS_PER_PORT) {
+ /* Manufacture GID from LID to support extended
+ * addresses
+ */
+ ppd->guids[HFI2_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);
+
+ if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
+ ppd_dev_warn(ppd, "SubnSet(OPA_PortInfo cport) smlid 0x%x\n",
+ smlid);
+ spin_lock_irqsave(&ibp->rvp.lock, flags);
+ if (ibp->rvp.sm_ah) {
+ if (smlid != ibp->rvp.sm_lid)
+ hfi2_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);
+ }
+ lwe = be16_to_cpu(pi->link_width_downgrade.enabled);
+ 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) {
+ if (lwe != ppd->link_width_downgrade_enabled)
+ set_link_width_downgrade_enabled(ppd, lwe);
+ }
+ lse = be16_to_cpu(pi->link_speed.enabled);
+ if (lse)
+ set_link_speed_enabled(ppd, lse);
+
+ 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;
+
+ /*
+ * The only part of set_mtu() that's required here is to
+ * determine the maximum MTU (ppd->ibmtu) and resulting maximum length
+ * (ppd->ibmaxlen). Do that here as we check every MTU.
+ */
+ ppd->ibmtu = 0;
+ for (i = 0; i < ppd->vls_supported; i++) {
+ mtu = pi->neigh_mtu.pvlx_to_mtu[i / 2];
+ if ((i % 2) == 0)
+ mtu >>= 4;
+ mtu = enum_to_mtu(mtu & 0xF);
+ if (mtu == 0xffff) {
+ ppd_dev_warn(ppd, "%s: mtu invalid %d (0x%x)\n",
+ __func__, mtu,
+ (pi->neigh_mtu.pvlx_to_mtu[0] >> 4) & 0xF);
+ mtu = hfi2_max_mtu; /* use a valid MTU */
+ }
+ if (ppd->ibmtu < mtu)
+ ppd->ibmtu = mtu;
+ if (ppd->vld[i].mtu != mtu) {
+ ppd_dev_info(ppd, "MTU change on vl %d from %d to %d\n",
+ i, ppd->vld[i].mtu, mtu);
+ ppd->vld[i].mtu = 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 (ppd->ibmtu < mtu)
+ ppd->ibmtu = mtu;
+ if (ppd->vld[15].mtu != mtu) {
+ ppd_dev_info(ppd, "MTU change on vl 15 from %d to %d\n",
+ ppd->vld[15].mtu, mtu);
+ ppd->vld[15].mtu = mtu;
+ }
+ ppd->ibmaxlen = ppd->ibmtu + lrh_max_header_bytes(ppd);
+
+ vls = pi->operational_vls & OPA_PI_MASK_OPERATIONAL_VL;
+ /* hfi2_set_ib_cfg(HFI2_IB_CFG_OP_VLS) is hardware-neutral */
+ if (vls)
+ hfi2_set_ib_cfg(ppd, HFI2_IB_CFG_OP_VLS, vls);
+
+ 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)
+ 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 = port_states_to_logical_state(&pi->port_states);
+ ps_new = port_states_to_phys_state(&pi->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;
+ }
+ }
+
+ if (clientrereg) {
+ event.event = IB_EVENT_CLIENT_REREGISTER;
+ ib_dispatch_event(&event);
+ }
+
+ ppd->neighbor_normal = (pi->port_states.ledenable_offlinereason >> 4) & 1;
+
+ /* Finally, perform "safe" version of set_port_states() */
+ cport_set_port_states(ppd, pi, ls_new, ps_new);
+
+ return 0;
+}
+
+/*
+ * When snooping MADs between FM and CPORT, the following will be seen:
+ * (FM typically observes the port in INIT when it starts)
+ * FM sends a SET PortInfo MAD with the designated state. The driver
+ * sees the GET response generated by the CPORT, and the state in this
+ * response is not necessarily the state requested by the FM (if the
+ * transition takes time, it may not be reflected in the MAD response).
+ * The following focuses on the logical port state, with the physical
+ * port state when applicable.
+ *
+ * current FM sends driver sees new state
+ * ------- -------- ----------- ---------
+ * INIT ARMED ??? ARMED
+ * ARMED ACTIVE ??? ACTIVE
+ * ACTIVE (nothing sent) ACTIVE
+ *
+ * (*FM bounces port*)
+ * (prev) NOP/POLL (prev) INIT (eventually)
+ *
+ * (*FM changes LID*)
+ * (prev) ---? (prev) (prev)
+ */
+static int cport_set_opa_portinfo(struct hfi2_pportdata *ppd,
+ struct opa_smp *smp,
+ u8 *data)
+{
+ struct opa_port_info *pi = (struct opa_port_info *)data;
+ int ret = 0;
+
+ /* Note: what we have here is actually a GET_RESP, in spite of
+ * appearing to be a SET.
+ */
+ ret = update_from_opa_portinfo(ppd, smp, pi);
+ return ret;
+}
+
+static int cport_set_opa_pkeytbl(struct hfi2_pportdata *ppd,
+ struct opa_smp *smp,
+ u8 *data)
+{
+ struct hfi2_devdata *dd = ppd->dd;
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 n_blocks_sent = OPA_AM_NBLK(am);
+ int npk_sent = n_blocks_sent * OPA_PARTITION_TABLE_BLK_SIZE;
+ u32 start_block = am & 0x7ff;
+ u16 *p = (u16 *)data;
+ __be16 *q = (__be16 *)data;
+ int i;
+ u32 n_blocks_avail;
+ u32 npkeys = hfi2_get_npkeys(dd);
+ u32 size = 0;
+ u32 max_len = (u32)opa_get_smp_data_size(smp);
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (n_blocks_sent == 0)
+ goto out;
+ n_blocks_avail = DIV_ROUND_UP(npkeys, OPA_PARTITION_TABLE_BLK_SIZE);
+ size = sizeof(u16) * npk_sent;
+ if (smp_length_check(size, max_len))
+ goto out;
+ if (start_block + n_blocks_sent > n_blocks_avail ||
+ n_blocks_sent > OPA_NUM_PKEY_BLOCKS_PER_SMP)
+ goto out;
+
+ /* must convert to little-endian for set_pkeys() */
+ for (i = 0; i < npk_sent; i++)
+ p[i] = be16_to_cpu(q[i]);
+ if (set_pkeys(dd, ppd->port, start_block, n_blocks_sent, p) == 0)
+ sts = 0;
+ /* must convert back to big-endian for response */
+ for (i = 0; i < npk_sent; i++)
+ q[i] = cpu_to_be16(p[i]);
+out:
+ return sts;
+}
+
+static int cport_set_opa_slsc(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ struct hfi2_ibport *ibp = &ppd->ibport_data;
+ u8 *p = data;
+ int i;
+
+ /* always update driver tables with CPORT contents */
+ for (i = 0; i < ARRAY_SIZE(ibp->sl_to_sc); i++)
+ ibp->sl_to_sc[i] = *p++;
+
+ return 0;
+}
+
+static int cport_set_opa_vlarb(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 num_ports = OPA_AM_NPORT(am);
+ u8 section = (am & 0x00ff0000) >> 16;
+ u8 *p = data;
+ u32 max_len = (u32)opa_get_smp_data_size(smp);
+ int size = 256;
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (num_ports != 1 || smp_length_check(size, max_len))
+ goto out;
+
+ switch (section) {
+ case OPA_VLARB_LOW_ELEMENTS:
+ (void)fm_set_table(ppd, FM_TBL_VL_LOW_ARB, p);
+ sts = 0;
+ break;
+ case OPA_VLARB_HIGH_ELEMENTS:
+ (void)fm_set_table(ppd, FM_TBL_VL_HIGH_ARB, p);
+ sts = 0;
+ break;
+ case OPA_VLARB_PREEMPT_ELEMENTS:
+ case OPA_VLARB_PREEMPT_MATRIX:
+ default:
+ break;
+ }
+out:
+ return sts;
+}
+
+static int cport_set_opa_scsl(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ struct hfi2_ibport *ibp = &ppd->ibport_data;
+ u8 *p = data;
+ int i;
+
+ /* always update driver tables with CPORT contents */
+ for (i = 0; i < ARRAY_SIZE(ibp->sc_to_sl); i++)
+ ibp->sc_to_sl[i] = *p++;
+
+ return 0;
+}
+
+static int cport_set_opa_scvlr(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ sts = 0;
+ return sts;
+}
+
+static int cport_set_opa_scvlt(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 n_blocks = OPA_AM_NBLK(am);
+ int async_update = OPA_AM_ASYNC(am);
+ int lstate;
+ size_t size = 4 * sizeof(u64); /* see __subn_set_opa_sc_to_vlt() */
+ u32 max_len = (u32)opa_get_smp_data_size(smp);
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (n_blocks != 1 || async_update || smp_length_check(size, max_len))
+ goto out;
+ lstate = driver_lstate(ppd);
+ if (!async_update &&
+ (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE))
+ goto out;
+
+ /*
+ * set_sc2vlt_tables() writes CSRs, and CPORT now maintains those.
+ * Also, need to avoid altering (filter_sc2vlt()) the MAD data since
+ * it needs to be sent back to requesting node.
+ */
+ write_seqlock_irq(&ppd->sc2vl_lock);
+ memcpy(ppd->sc2vl, data, sizeof(ppd->sc2vl));
+ filter_sc2vlt(ppd->sc2vl, true);
+ write_sequnlock_irq(&ppd->sc2vl_lock);
+ sts = 0;
+out:
+ return sts;
+}
+
+static int cport_set_opa_scvlnt(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 n_blocks = OPA_AM_NPORT(am);
+ int lstate;
+ int size = sizeof(struct sc2vlnt);
+ u32 max_len = (u32)opa_get_smp_data_size(smp);
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (n_blocks != 1 || smp_length_check(size, max_len))
+ goto out;
+ lstate = driver_lstate(ppd);
+ if (lstate == IB_PORT_ARMED || lstate == IB_PORT_ACTIVE)
+ goto out;
+
+ /* CPORT controls sc2vlnt */
+ sts = 0;
+
+out:
+ return sts;
+}
+
+static int cport_set_opa_bufctl(struct hfi2_pportdata *ppd, struct opa_smp *smp,
+ u8 *data)
+{
+ u32 am = be32_to_cpu(smp->attr_mod);
+ u32 num_ports = OPA_AM_NPORT(am);
+ u32 max_len = (u32)opa_get_smp_data_size(smp);
+ struct buffer_control *p = (struct buffer_control *)data;
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (num_ports != 1 || smp_length_check(sizeof(*p), max_len))
+ goto out;
+
+ sts = 0;
+out:
+ return sts;
+}
+
+static int cport_set_opa_aggr(struct hfi2_pportdata *ppd, struct opa_smp *smp)
+{
+ return 0;
+}
+
+static int cport_subn_set_opa(struct hfi2_pportdata *ppd, struct opa_smp *smp)
+{
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+ u8 *data = opa_get_smp_data(smp);
+
+ switch (smp->attr_id) {
+ case IB_SMP_ATTR_NODE_DESC:
+ sts = cport_do_opa_nodedesc(ppd, smp, data);
+ break;
+ case IB_SMP_ATTR_NODE_INFO:
+ sts = cport_set_opa_nodeinfo(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_PORT_INFO:
+ sts = cport_set_opa_portinfo(ppd, smp, data);
+ break;
+ case IB_SMP_ATTR_PKEY_TABLE:
+ sts = cport_set_opa_pkeytbl(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_SL_TO_SC_MAP:
+ sts = cport_set_opa_slsc(ppd, smp, data);
+ break;
+ case IB_SMP_ATTR_VL_ARB_TABLE:
+ sts = cport_set_opa_vlarb(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_SC_TO_SL_MAP:
+ sts = cport_set_opa_scsl(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_SC_TO_VLR_MAP:
+ sts = cport_set_opa_scvlr(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_SC_TO_VLT_MAP:
+ sts = cport_set_opa_scvlt(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_SC_TO_VLNT_MAP:
+ sts = cport_set_opa_scvlnt(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE:
+ sts = cport_set_opa_bufctl(ppd, smp, data);
+ break;
+ case OPA_ATTRIB_ID_CONGESTION_INFO:
+ break;
+ case OPA_ATTRIB_ID_HFI_CONGESTION_LOG:
+ break;
+ case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING:
+ sts = 0; /* accept, nothing to do */
+ break;
+ case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE:
+ break;
+ case IB_SMP_ATTR_NOTICE:
+ break;
+ case IB_SMP_ATTR_SM_INFO:
+ break;
+ case IB_SMP_ATTR_LED_INFO:
+ break;
+ case OPA_ATTRIB_ID_CABLE_INFO:
+ break;
+ case OPA_ATTRIB_ID_AGGREGATE:
+ sts = cport_set_opa_aggr(ppd, smp);
+ break;
+ default:
+ break;
+ }
+ return sts;
+}
+
+static int cport_subn_opa(struct hfi2_pportdata *ppd, struct opa_mad *mad)
+{
+ struct opa_smp *smp = (struct opa_smp *)mad;
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (smp->class_version != OPA_SM_CLASS_VERSION) {
+ smp->status |= IB_SMP_UNSUP_VERSION;
+ goto out;
+ }
+ switch (smp->method) {
+ case IB_MGMT_METHOD_SET:
+ sts = cport_subn_set_opa(ppd, smp);
+ break;
+ case IB_MGMT_METHOD_GET:
+ if (smp->attr_id == IB_SMP_ATTR_NODE_DESC) {
+ sts = cport_do_opa_nodedesc(ppd, smp, opa_get_smp_data(smp));
+ break;
+ }
+ sts = 0;
+ break;
+ default:
+ break;
+ }
+out:
+ return sts;
+}
+
+static int hfi2_opa_mad_cport(struct hfi2_pportdata *ppd, struct opa_mad *mad)
+{
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ switch (mad->mad_hdr.mgmt_class) {
+ case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
+ case IB_MGMT_CLASS_SUBN_LID_ROUTED:
+ sts = cport_subn_opa(ppd, mad);
+ break;
+ case IB_MGMT_CLASS_PERF_MGMT:
+ sts = 0; /* accept, nothing to do */
+ break;
+ default:
+ break;
+ }
+ return sts;
+}
+
+static int cport_get_ib_nodeinfo(struct hfi2_pportdata *ppd, struct ib_smp *smp)
+{
+ return 0;
+}
+
+static int cport_subn_get_ib(struct hfi2_pportdata *ppd, struct ib_smp *smp)
+{
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ switch (smp->attr_id) {
+ case IB_SMP_ATTR_NODE_INFO:
+ sts = cport_get_ib_nodeinfo(ppd, smp);
+ break;
+ default:
+ smp->status |= IB_SMP_UNSUP_METH_ATTR;
+ break;
+ }
+ if (sts)
+ ppd_dev_err(ppd, "%s: ret %d\n", __func__, sts);
+ return sts;
+}
+
+static int cport_subn_ib(struct hfi2_pportdata *ppd, struct ib_mad *mad)
+{
+ struct ib_smp *smp = (struct ib_smp *)mad;
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ if (smp->class_version != 1) {
+ smp->status |= IB_SMP_UNSUP_VERSION;
+ goto out;
+ }
+ switch (smp->method) {
+ case IB_MGMT_METHOD_GET:
+ sts = cport_subn_get_ib(ppd, smp);
+ break;
+ default:
+ smp->status |= IB_SMP_UNSUP_METHOD;
+ break;
+ }
+out:
+ if (sts)
+ ppd_dev_err(ppd, "%s: ret %d\n", __func__, sts);
+ return sts;
+}
+
+static int hfi2_ib_mad_cport(struct hfi2_pportdata *ppd, struct ib_mad *mad)
+{
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+
+ switch (mad->mad_hdr.mgmt_class) {
+ case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:
+ case IB_MGMT_CLASS_SUBN_LID_ROUTED:
+ sts = cport_subn_ib(ppd, mad);
+ break;
+ case IB_MGMT_CLASS_PERF_MGMT:
+ sts = 0; /* accept, nothing to do */
+ break;
+ }
+ if (sts)
+ ppd_dev_err(ppd, "%s: ret %d\n", __func__, sts);
+ return sts;
+}
+
+static inline int get_mad_offset(void *hdr, bool is16B)
+{
+ if (is16B) {
+ /* 16B header - look at the L4 type */
+ switch (hfi2_16B_get_l4(hdr)) {
+ case OPA_16B_L4_FM:
+ return MAD_16B_FM_OFFSET;
+ case OPA_16B_L4_IB_LOCAL:
+ return MAD_16B_IB_OFFSET;
+ default:
+ /* can't determine MAD header offset */
+ return -1;
+ }
+
+ } else {
+ /* expect 9B */
+ return MAD_9B_OFFSET;
+ }
+}
+
+/*
+ * CPORT is communicating with some user-space application using MADs.
+ * We simply forward these MADs to IB verbs to handle as for normal
+ * receives.
+ */
+static int cport_umad_handler(struct hfi2_devdata *dd, u8 op, u8 sideband,
+ void *payload, int len, void *handle)
+{
+ struct ib_smp *mad;
+ struct hfi2_pportdata *ppd;
+ struct rvt_qp *qp0;
+ struct ib_wc wc;
+ int mad_offset;
+ u32 tlen;
+ int port;
+ int ret = 0;
+ int rc;
+
+ mad_offset = get_mad_offset(payload, op == CH_OP_UMAD_16B);
+ if (mad_offset < 0)
+ return MSG_RSP_STATUS_INVALID_STATE;
+ mad = payload + mad_offset;
+
+ /* This MAD really must be IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE,
+ * but this routine doesn't care.
+ */
+
+ port = sideband & 0x7;
+ if (!port)
+ port = 1;
+ if (port > dd->num_pports) {
+ port -= dd->num_pports;
+ if (port > dd->num_pports)
+ port = 1;
+ }
+ ppd = &dd->pport[port - 1];
+ rcu_read_lock();
+ qp0 = rcu_dereference(ppd->ibport_data.rvp.qp[0]);
+ if (!qp0) {
+ ppd_dev_err(ppd, "QP0 is NULL\n");
+ ret = MSG_RSP_STATUS_INVALID_STATE;
+ goto out;
+ }
+
+ tlen = len - mad_offset;
+
+ wc.ex.imm_data = 0;
+ wc.wc_flags = IB_WC_IP_CSUM_OK;
+ wc.byte_len = tlen + sizeof(struct ib_grh);
+ /* Ignore RVT_R_REUSE_SGE here, as done by hfi2_rc_rcv and hfi2_uc_rcv */
+ rc = rvt_get_rwqe(qp0, false);
+ if (rc <= 0) {
+ if (rc < 0)
+ rvt_rc_error(qp0, IB_WC_LOC_QP_OP_ERR);
+ else
+ ppd->ibport_data.rvp.n_vl15_dropped++;
+ ret = MSG_RSP_STATUS_INVALID_STATE;
+ goto out;
+ }
+ rvt_skip_sge(&qp0->r_sge, sizeof(struct ib_grh), true);
+ rvt_copy_sge(qp0, &qp0->r_sge, payload + mad_offset,
+ wc.byte_len - sizeof(struct ib_grh), true, false);
+ rvt_put_ss(&qp0->r_sge);
+ if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp0->r_aflags)) {
+ /* Something went wrong since rvt_get_rwqe, assume it was transient */
+ ret = MSG_RSP_STATUS_RETRY;
+ goto out;
+ }
+
+ wc.wr_id = qp0->r_wr_id;
+ wc.status = IB_WC_SUCCESS;
+ wc.opcode = IB_WC_RECV;
+ wc.vendor_err = 0;
+ wc.qp = &qp0->ibqp;
+ wc.src_qp = 0; /* MCTXT has no QP, so just use 0 */
+ wc.pkey_index = 0;
+ wc.slid = be16_to_cpu(mad->dr_slid);
+ wc.sl = ppd->ibport_data.sc_to_sl[15];
+ wc.dlid_path_bits = be16_to_cpu(mad->dr_dlid) & ((1 << ppd->lmc) - 1);
+ wc.port_num = qp0->port_num;
+
+ rvt_recv_cq(qp0, &wc, false);
+out:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * CPORT sends us the MAD response, so our only actions are to
+ * modify the response to add more data and/or take note of any
+ * implications of the MAD.
+ */
+static int cport_mad_handler(struct hfi2_devdata *dd, u8 op, u8 sideband,
+ void *payload, int len, void *handle)
+{
+ struct ib_mad *mad = NULL;
+ struct hfi2_pportdata *ppd = NULL;
+ int sts = MSG_RSP_STATUS_INVALID_STATE;
+ int mad_offset;
+ int port;
+
+ mad_offset = get_mad_offset(payload, op == CH_OP_MAD_16B);
+ if (mad_offset < 0)
+ goto done;
+ mad = (struct ib_mad *)(payload + mad_offset);
+
+ port = sideband & 0x7;
+ if (!port) {
+ dd_dev_info(dd, "Fudging zero port to 1\n");
+ port = 1;
+ }
+ if (port > 2) {
+ dd_dev_info(dd, "Fudging loopback port %d -> %d\n",
+ port, port - 2);
+ port = port - 2;
+ }
+ if (!port || port > dd->num_pports)
+ goto done;
+ ppd = &dd->pport[port - 1];
+
+ switch (mad->mad_hdr.base_version) {
+ case OPA_MGMT_BASE_VERSION:
+ sts = hfi2_opa_mad_cport(ppd, (struct opa_mad *)mad);
+ break;
+ case IB_MGMT_BASE_VERSION:
+ sts = hfi2_ib_mad_cport(ppd, mad);
+ break;
+ default:
+ break;
+ }
+
+done:
+ /* print mad and error before mad_hdr.method is overwritten */
+ if (mad && (sts || (mad->mad_hdr.status & ~IB_SMP_DIRECTION))) {
+
+ if (ppd)
+ ppd_dev_info(ppd, "CPORT MAD error: [%02x] %02x %02x %02x %02x - %04x %04x %08x (%d)\n",
+ sideband, mad->mad_hdr.base_version,
+ mad->mad_hdr.mgmt_class,
+ mad->mad_hdr.class_version,
+ mad->mad_hdr.method,
+ be16_to_cpu(mad->mad_hdr.status),
+ be16_to_cpu(mad->mad_hdr.attr_id),
+ be32_to_cpu(mad->mad_hdr.attr_mod),
+ sts);
+ else
+ dd_dev_info(dd, "CPORT MAD error: [%02x] %02x %02x %02x %02x - %04x %04x %08x (%d)\n",
+ sideband, mad->mad_hdr.base_version,
+ mad->mad_hdr.mgmt_class,
+ mad->mad_hdr.class_version,
+ mad->mad_hdr.method,
+ be16_to_cpu(mad->mad_hdr.status),
+ be16_to_cpu(mad->mad_hdr.attr_id),
+ be32_to_cpu(mad->mad_hdr.attr_mod),
+ sts);
+ } else if (sts) {
+ if (ppd)
+ ppd_dev_info(ppd, "CPORT MAD error: [%02x] (%d)\n",
+ sideband, sts);
+ else
+ dd_dev_info(dd, "CPORT MAD error: [%02x] (%d)\n",
+ sideband, sts);
+ }
+ /*
+ * Last step before returning MAD to cport: If this was a Get or Set,
+ * change the MgmtMethod value to a Get Response.
+ */
+ if (mad && (mad->mad_hdr.method == IB_MGMT_METHOD_GET ||
+ mad->mad_hdr.method == IB_MGMT_METHOD_SET))
+ mad->mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
+ /*
+ * Copy (MAD response) payload back into MCTXT response.
+ * This is done even if sts != 0.
+ */
+ cport_resp_set(handle, payload, len);
+ return sts;
+}
+
+int hfi2_mad_init(struct hfi2_devdata *dd)
+{
+ int ret;
+
+ if (!dd->cport)
+ return 0;
+ ret = cport_register_cb(dd, CH_OP_MAD_9B, CH_OP_MAD_16B, cport_mad_handler);
+ if (ret)
+ dd_dev_warn(dd, "Failed to register for MCTXT MADs (%d)\n", ret);
+ ret = cport_register_cb(dd, CH_OP_UMAD_9B, CH_OP_UMAD_16B, cport_umad_handler);
+ if (ret)
+ dd_dev_warn(dd, "Failed to register for MCTXT UMADs (%d)\n", ret);
+ return ret;
+}
+
+int hfi2_mad_deinit(struct hfi2_devdata *dd)
+{
+ if (!dd->cport)
+ return 0;
+ deinit_cport_trap128(dd);
+ cport_register_cb(dd, CH_OP_MAD_9B, CH_OP_MAD_16B, NULL);
+ cport_register_cb(dd, CH_OP_UMAD_9B, CH_OP_UMAD_16B, NULL);
+ return 0;
+}