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170003c894
Now that most of the port mapper code been moved to iwcm, we can remove it from iw_cxgb4. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
1521 lines
42 KiB
C
1521 lines
42 KiB
C
/*
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* Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/debugfs.h>
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#include <linux/vmalloc.h>
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#include <linux/math64.h>
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#include <rdma/ib_verbs.h>
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#include "iw_cxgb4.h"
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#define DRV_VERSION "0.1"
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MODULE_AUTHOR("Steve Wise");
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MODULE_DESCRIPTION("Chelsio T4/T5 RDMA Driver");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_VERSION(DRV_VERSION);
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static int allow_db_fc_on_t5;
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module_param(allow_db_fc_on_t5, int, 0644);
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MODULE_PARM_DESC(allow_db_fc_on_t5,
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"Allow DB Flow Control on T5 (default = 0)");
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static int allow_db_coalescing_on_t5;
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module_param(allow_db_coalescing_on_t5, int, 0644);
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MODULE_PARM_DESC(allow_db_coalescing_on_t5,
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"Allow DB Coalescing on T5 (default = 0)");
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int c4iw_wr_log = 0;
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module_param(c4iw_wr_log, int, 0444);
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MODULE_PARM_DESC(c4iw_wr_log, "Enables logging of work request timing data.");
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static int c4iw_wr_log_size_order = 12;
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module_param(c4iw_wr_log_size_order, int, 0444);
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MODULE_PARM_DESC(c4iw_wr_log_size_order,
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"Number of entries (log2) in the work request timing log.");
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struct uld_ctx {
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struct list_head entry;
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struct cxgb4_lld_info lldi;
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struct c4iw_dev *dev;
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};
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static LIST_HEAD(uld_ctx_list);
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static DEFINE_MUTEX(dev_mutex);
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#define DB_FC_RESUME_SIZE 64
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#define DB_FC_RESUME_DELAY 1
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#define DB_FC_DRAIN_THRESH 0
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static struct dentry *c4iw_debugfs_root;
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struct c4iw_debugfs_data {
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struct c4iw_dev *devp;
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char *buf;
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int bufsize;
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int pos;
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};
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static int count_idrs(int id, void *p, void *data)
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{
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int *countp = data;
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*countp = *countp + 1;
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return 0;
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}
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static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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struct c4iw_debugfs_data *d = file->private_data;
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return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos);
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}
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void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe)
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{
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struct wr_log_entry le;
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int idx;
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if (!wq->rdev->wr_log)
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return;
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idx = (atomic_inc_return(&wq->rdev->wr_log_idx) - 1) &
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(wq->rdev->wr_log_size - 1);
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le.poll_sge_ts = cxgb4_read_sge_timestamp(wq->rdev->lldi.ports[0]);
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getnstimeofday(&le.poll_host_ts);
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le.valid = 1;
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le.cqe_sge_ts = CQE_TS(cqe);
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if (SQ_TYPE(cqe)) {
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le.qid = wq->sq.qid;
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le.opcode = CQE_OPCODE(cqe);
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le.post_host_ts = wq->sq.sw_sq[wq->sq.cidx].host_ts;
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le.post_sge_ts = wq->sq.sw_sq[wq->sq.cidx].sge_ts;
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le.wr_id = CQE_WRID_SQ_IDX(cqe);
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} else {
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le.qid = wq->rq.qid;
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le.opcode = FW_RI_RECEIVE;
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le.post_host_ts = wq->rq.sw_rq[wq->rq.cidx].host_ts;
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le.post_sge_ts = wq->rq.sw_rq[wq->rq.cidx].sge_ts;
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le.wr_id = CQE_WRID_MSN(cqe);
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}
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wq->rdev->wr_log[idx] = le;
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}
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static int wr_log_show(struct seq_file *seq, void *v)
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{
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struct c4iw_dev *dev = seq->private;
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struct timespec prev_ts = {0, 0};
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struct wr_log_entry *lep;
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int prev_ts_set = 0;
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int idx, end;
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#define ts2ns(ts) div64_u64((ts) * dev->rdev.lldi.cclk_ps, 1000)
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idx = atomic_read(&dev->rdev.wr_log_idx) &
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(dev->rdev.wr_log_size - 1);
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end = idx - 1;
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if (end < 0)
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end = dev->rdev.wr_log_size - 1;
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lep = &dev->rdev.wr_log[idx];
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while (idx != end) {
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if (lep->valid) {
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if (!prev_ts_set) {
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prev_ts_set = 1;
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prev_ts = lep->poll_host_ts;
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}
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seq_printf(seq, "%04u: sec %lu nsec %lu qid %u opcode "
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"%u %s 0x%x host_wr_delta sec %lu nsec %lu "
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"post_sge_ts 0x%llx cqe_sge_ts 0x%llx "
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"poll_sge_ts 0x%llx post_poll_delta_ns %llu "
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"cqe_poll_delta_ns %llu\n",
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idx,
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timespec_sub(lep->poll_host_ts,
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prev_ts).tv_sec,
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timespec_sub(lep->poll_host_ts,
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prev_ts).tv_nsec,
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lep->qid, lep->opcode,
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lep->opcode == FW_RI_RECEIVE ?
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"msn" : "wrid",
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lep->wr_id,
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timespec_sub(lep->poll_host_ts,
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lep->post_host_ts).tv_sec,
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timespec_sub(lep->poll_host_ts,
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lep->post_host_ts).tv_nsec,
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lep->post_sge_ts, lep->cqe_sge_ts,
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lep->poll_sge_ts,
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ts2ns(lep->poll_sge_ts - lep->post_sge_ts),
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ts2ns(lep->poll_sge_ts - lep->cqe_sge_ts));
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prev_ts = lep->poll_host_ts;
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}
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idx++;
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if (idx > (dev->rdev.wr_log_size - 1))
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idx = 0;
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lep = &dev->rdev.wr_log[idx];
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}
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#undef ts2ns
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return 0;
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}
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static int wr_log_open(struct inode *inode, struct file *file)
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{
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return single_open(file, wr_log_show, inode->i_private);
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}
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static ssize_t wr_log_clear(struct file *file, const char __user *buf,
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size_t count, loff_t *pos)
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{
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struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private;
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int i;
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if (dev->rdev.wr_log)
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for (i = 0; i < dev->rdev.wr_log_size; i++)
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dev->rdev.wr_log[i].valid = 0;
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return count;
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}
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static const struct file_operations wr_log_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = wr_log_open,
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.release = single_release,
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.read = seq_read,
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.llseek = seq_lseek,
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.write = wr_log_clear,
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};
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static int dump_qp(int id, void *p, void *data)
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{
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struct c4iw_qp *qp = p;
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struct c4iw_debugfs_data *qpd = data;
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int space;
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int cc;
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if (id != qp->wq.sq.qid)
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return 0;
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space = qpd->bufsize - qpd->pos - 1;
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if (space == 0)
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return 1;
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if (qp->ep) {
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if (qp->ep->com.local_addr.ss_family == AF_INET) {
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struct sockaddr_in *lsin = (struct sockaddr_in *)
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&qp->ep->com.cm_id->local_addr;
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struct sockaddr_in *rsin = (struct sockaddr_in *)
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&qp->ep->com.cm_id->remote_addr;
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struct sockaddr_in *mapped_lsin = (struct sockaddr_in *)
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&qp->ep->com.cm_id->m_local_addr;
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struct sockaddr_in *mapped_rsin = (struct sockaddr_in *)
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&qp->ep->com.cm_id->m_remote_addr;
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cc = snprintf(qpd->buf + qpd->pos, space,
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"rc qp sq id %u rq id %u state %u "
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"onchip %u ep tid %u state %u "
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"%pI4:%u/%u->%pI4:%u/%u\n",
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qp->wq.sq.qid, qp->wq.rq.qid,
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(int)qp->attr.state,
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qp->wq.sq.flags & T4_SQ_ONCHIP,
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qp->ep->hwtid, (int)qp->ep->com.state,
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&lsin->sin_addr, ntohs(lsin->sin_port),
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ntohs(mapped_lsin->sin_port),
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&rsin->sin_addr, ntohs(rsin->sin_port),
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ntohs(mapped_rsin->sin_port));
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} else {
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struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)
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&qp->ep->com.cm_id->local_addr;
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struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *)
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&qp->ep->com.cm_id->remote_addr;
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struct sockaddr_in6 *mapped_lsin6 =
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(struct sockaddr_in6 *)
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&qp->ep->com.cm_id->m_local_addr;
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struct sockaddr_in6 *mapped_rsin6 =
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(struct sockaddr_in6 *)
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&qp->ep->com.cm_id->m_remote_addr;
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cc = snprintf(qpd->buf + qpd->pos, space,
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"rc qp sq id %u rq id %u state %u "
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"onchip %u ep tid %u state %u "
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"%pI6:%u/%u->%pI6:%u/%u\n",
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qp->wq.sq.qid, qp->wq.rq.qid,
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(int)qp->attr.state,
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qp->wq.sq.flags & T4_SQ_ONCHIP,
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qp->ep->hwtid, (int)qp->ep->com.state,
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&lsin6->sin6_addr,
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ntohs(lsin6->sin6_port),
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ntohs(mapped_lsin6->sin6_port),
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&rsin6->sin6_addr,
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ntohs(rsin6->sin6_port),
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ntohs(mapped_rsin6->sin6_port));
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}
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} else
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cc = snprintf(qpd->buf + qpd->pos, space,
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"qp sq id %u rq id %u state %u onchip %u\n",
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qp->wq.sq.qid, qp->wq.rq.qid,
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(int)qp->attr.state,
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qp->wq.sq.flags & T4_SQ_ONCHIP);
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if (cc < space)
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qpd->pos += cc;
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return 0;
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}
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static int qp_release(struct inode *inode, struct file *file)
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{
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struct c4iw_debugfs_data *qpd = file->private_data;
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if (!qpd) {
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printk(KERN_INFO "%s null qpd?\n", __func__);
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return 0;
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}
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vfree(qpd->buf);
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kfree(qpd);
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return 0;
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}
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static int qp_open(struct inode *inode, struct file *file)
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{
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struct c4iw_debugfs_data *qpd;
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int count = 1;
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qpd = kmalloc(sizeof *qpd, GFP_KERNEL);
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if (!qpd)
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return -ENOMEM;
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qpd->devp = inode->i_private;
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qpd->pos = 0;
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spin_lock_irq(&qpd->devp->lock);
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idr_for_each(&qpd->devp->qpidr, count_idrs, &count);
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spin_unlock_irq(&qpd->devp->lock);
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qpd->bufsize = count * 128;
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qpd->buf = vmalloc(qpd->bufsize);
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if (!qpd->buf) {
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kfree(qpd);
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return -ENOMEM;
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}
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spin_lock_irq(&qpd->devp->lock);
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idr_for_each(&qpd->devp->qpidr, dump_qp, qpd);
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spin_unlock_irq(&qpd->devp->lock);
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qpd->buf[qpd->pos++] = 0;
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file->private_data = qpd;
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return 0;
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}
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static const struct file_operations qp_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = qp_open,
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.release = qp_release,
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.read = debugfs_read,
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.llseek = default_llseek,
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};
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static int dump_stag(int id, void *p, void *data)
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{
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struct c4iw_debugfs_data *stagd = data;
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int space;
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int cc;
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struct fw_ri_tpte tpte;
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int ret;
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space = stagd->bufsize - stagd->pos - 1;
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if (space == 0)
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return 1;
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ret = cxgb4_read_tpte(stagd->devp->rdev.lldi.ports[0], (u32)id<<8,
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(__be32 *)&tpte);
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if (ret) {
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dev_err(&stagd->devp->rdev.lldi.pdev->dev,
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"%s cxgb4_read_tpte err %d\n", __func__, ret);
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return ret;
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}
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cc = snprintf(stagd->buf + stagd->pos, space,
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"stag: idx 0x%x valid %d key 0x%x state %d pdid %d "
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"perm 0x%x ps %d len 0x%llx va 0x%llx\n",
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(u32)id<<8,
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FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid)),
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FW_RI_TPTE_STAGKEY_G(ntohl(tpte.valid_to_pdid)),
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FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid)),
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FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid)),
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FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid)),
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FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid)),
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((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo),
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((u64)ntohl(tpte.va_hi) << 32) | ntohl(tpte.va_lo_fbo));
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if (cc < space)
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stagd->pos += cc;
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return 0;
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}
|
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|
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static int stag_release(struct inode *inode, struct file *file)
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{
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struct c4iw_debugfs_data *stagd = file->private_data;
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if (!stagd) {
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printk(KERN_INFO "%s null stagd?\n", __func__);
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return 0;
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}
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vfree(stagd->buf);
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kfree(stagd);
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return 0;
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}
|
|
|
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static int stag_open(struct inode *inode, struct file *file)
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{
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struct c4iw_debugfs_data *stagd;
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int ret = 0;
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int count = 1;
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|
|
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stagd = kmalloc(sizeof *stagd, GFP_KERNEL);
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if (!stagd) {
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ret = -ENOMEM;
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goto out;
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}
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stagd->devp = inode->i_private;
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stagd->pos = 0;
|
|
|
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spin_lock_irq(&stagd->devp->lock);
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idr_for_each(&stagd->devp->mmidr, count_idrs, &count);
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spin_unlock_irq(&stagd->devp->lock);
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|
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stagd->bufsize = count * 256;
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stagd->buf = vmalloc(stagd->bufsize);
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if (!stagd->buf) {
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ret = -ENOMEM;
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goto err1;
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}
|
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|
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spin_lock_irq(&stagd->devp->lock);
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idr_for_each(&stagd->devp->mmidr, dump_stag, stagd);
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spin_unlock_irq(&stagd->devp->lock);
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stagd->buf[stagd->pos++] = 0;
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file->private_data = stagd;
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goto out;
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err1:
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kfree(stagd);
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out:
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return ret;
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}
|
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|
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static const struct file_operations stag_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = stag_open,
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.release = stag_release,
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.read = debugfs_read,
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.llseek = default_llseek,
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};
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|
|
static char *db_state_str[] = {"NORMAL", "FLOW_CONTROL", "RECOVERY", "STOPPED"};
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|
|
|
static int stats_show(struct seq_file *seq, void *v)
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{
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struct c4iw_dev *dev = seq->private;
|
|
|
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seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current",
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"Max", "Fail");
|
|
seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur,
|
|
dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail);
|
|
seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur,
|
|
dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail);
|
|
seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur,
|
|
dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail);
|
|
seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur,
|
|
dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail);
|
|
seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur,
|
|
dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail);
|
|
seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n",
|
|
dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur,
|
|
dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail);
|
|
seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full);
|
|
seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty);
|
|
seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop);
|
|
seq_printf(seq, " DB State: %s Transitions %llu FC Interruptions %llu\n",
|
|
db_state_str[dev->db_state],
|
|
dev->rdev.stats.db_state_transitions,
|
|
dev->rdev.stats.db_fc_interruptions);
|
|
seq_printf(seq, "TCAM_FULL: %10llu\n", dev->rdev.stats.tcam_full);
|
|
seq_printf(seq, "ACT_OFLD_CONN_FAILS: %10llu\n",
|
|
dev->rdev.stats.act_ofld_conn_fails);
|
|
seq_printf(seq, "PAS_OFLD_CONN_FAILS: %10llu\n",
|
|
dev->rdev.stats.pas_ofld_conn_fails);
|
|
seq_printf(seq, "NEG_ADV_RCVD: %10llu\n", dev->rdev.stats.neg_adv);
|
|
seq_printf(seq, "AVAILABLE IRD: %10u\n", dev->avail_ird);
|
|
return 0;
|
|
}
|
|
|
|
static int stats_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, stats_show, inode->i_private);
|
|
}
|
|
|
|
static ssize_t stats_clear(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private;
|
|
|
|
mutex_lock(&dev->rdev.stats.lock);
|
|
dev->rdev.stats.pd.max = 0;
|
|
dev->rdev.stats.pd.fail = 0;
|
|
dev->rdev.stats.qid.max = 0;
|
|
dev->rdev.stats.qid.fail = 0;
|
|
dev->rdev.stats.stag.max = 0;
|
|
dev->rdev.stats.stag.fail = 0;
|
|
dev->rdev.stats.pbl.max = 0;
|
|
dev->rdev.stats.pbl.fail = 0;
|
|
dev->rdev.stats.rqt.max = 0;
|
|
dev->rdev.stats.rqt.fail = 0;
|
|
dev->rdev.stats.ocqp.max = 0;
|
|
dev->rdev.stats.ocqp.fail = 0;
|
|
dev->rdev.stats.db_full = 0;
|
|
dev->rdev.stats.db_empty = 0;
|
|
dev->rdev.stats.db_drop = 0;
|
|
dev->rdev.stats.db_state_transitions = 0;
|
|
dev->rdev.stats.tcam_full = 0;
|
|
dev->rdev.stats.act_ofld_conn_fails = 0;
|
|
dev->rdev.stats.pas_ofld_conn_fails = 0;
|
|
mutex_unlock(&dev->rdev.stats.lock);
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations stats_debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = stats_open,
|
|
.release = single_release,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = stats_clear,
|
|
};
|
|
|
|
static int dump_ep(int id, void *p, void *data)
|
|
{
|
|
struct c4iw_ep *ep = p;
|
|
struct c4iw_debugfs_data *epd = data;
|
|
int space;
|
|
int cc;
|
|
|
|
space = epd->bufsize - epd->pos - 1;
|
|
if (space == 0)
|
|
return 1;
|
|
|
|
if (ep->com.local_addr.ss_family == AF_INET) {
|
|
struct sockaddr_in *lsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->local_addr;
|
|
struct sockaddr_in *rsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->remote_addr;
|
|
struct sockaddr_in *mapped_lsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
struct sockaddr_in *mapped_rsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->m_remote_addr;
|
|
|
|
cc = snprintf(epd->buf + epd->pos, space,
|
|
"ep %p cm_id %p qp %p state %d flags 0x%lx "
|
|
"history 0x%lx hwtid %d atid %d "
|
|
"conn_na %u abort_na %u "
|
|
"%pI4:%d/%d <-> %pI4:%d/%d\n",
|
|
ep, ep->com.cm_id, ep->com.qp,
|
|
(int)ep->com.state, ep->com.flags,
|
|
ep->com.history, ep->hwtid, ep->atid,
|
|
ep->stats.connect_neg_adv,
|
|
ep->stats.abort_neg_adv,
|
|
&lsin->sin_addr, ntohs(lsin->sin_port),
|
|
ntohs(mapped_lsin->sin_port),
|
|
&rsin->sin_addr, ntohs(rsin->sin_port),
|
|
ntohs(mapped_rsin->sin_port));
|
|
} else {
|
|
struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->local_addr;
|
|
struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->remote_addr;
|
|
struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
struct sockaddr_in6 *mapped_rsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->m_remote_addr;
|
|
|
|
cc = snprintf(epd->buf + epd->pos, space,
|
|
"ep %p cm_id %p qp %p state %d flags 0x%lx "
|
|
"history 0x%lx hwtid %d atid %d "
|
|
"conn_na %u abort_na %u "
|
|
"%pI6:%d/%d <-> %pI6:%d/%d\n",
|
|
ep, ep->com.cm_id, ep->com.qp,
|
|
(int)ep->com.state, ep->com.flags,
|
|
ep->com.history, ep->hwtid, ep->atid,
|
|
ep->stats.connect_neg_adv,
|
|
ep->stats.abort_neg_adv,
|
|
&lsin6->sin6_addr, ntohs(lsin6->sin6_port),
|
|
ntohs(mapped_lsin6->sin6_port),
|
|
&rsin6->sin6_addr, ntohs(rsin6->sin6_port),
|
|
ntohs(mapped_rsin6->sin6_port));
|
|
}
|
|
if (cc < space)
|
|
epd->pos += cc;
|
|
return 0;
|
|
}
|
|
|
|
static int dump_listen_ep(int id, void *p, void *data)
|
|
{
|
|
struct c4iw_listen_ep *ep = p;
|
|
struct c4iw_debugfs_data *epd = data;
|
|
int space;
|
|
int cc;
|
|
|
|
space = epd->bufsize - epd->pos - 1;
|
|
if (space == 0)
|
|
return 1;
|
|
|
|
if (ep->com.local_addr.ss_family == AF_INET) {
|
|
struct sockaddr_in *lsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->local_addr;
|
|
struct sockaddr_in *mapped_lsin = (struct sockaddr_in *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
|
|
cc = snprintf(epd->buf + epd->pos, space,
|
|
"ep %p cm_id %p state %d flags 0x%lx stid %d "
|
|
"backlog %d %pI4:%d/%d\n",
|
|
ep, ep->com.cm_id, (int)ep->com.state,
|
|
ep->com.flags, ep->stid, ep->backlog,
|
|
&lsin->sin_addr, ntohs(lsin->sin_port),
|
|
ntohs(mapped_lsin->sin_port));
|
|
} else {
|
|
struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->local_addr;
|
|
struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *)
|
|
&ep->com.cm_id->m_local_addr;
|
|
|
|
cc = snprintf(epd->buf + epd->pos, space,
|
|
"ep %p cm_id %p state %d flags 0x%lx stid %d "
|
|
"backlog %d %pI6:%d/%d\n",
|
|
ep, ep->com.cm_id, (int)ep->com.state,
|
|
ep->com.flags, ep->stid, ep->backlog,
|
|
&lsin6->sin6_addr, ntohs(lsin6->sin6_port),
|
|
ntohs(mapped_lsin6->sin6_port));
|
|
}
|
|
if (cc < space)
|
|
epd->pos += cc;
|
|
return 0;
|
|
}
|
|
|
|
static int ep_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct c4iw_debugfs_data *epd = file->private_data;
|
|
if (!epd) {
|
|
pr_info("%s null qpd?\n", __func__);
|
|
return 0;
|
|
}
|
|
vfree(epd->buf);
|
|
kfree(epd);
|
|
return 0;
|
|
}
|
|
|
|
static int ep_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct c4iw_debugfs_data *epd;
|
|
int ret = 0;
|
|
int count = 1;
|
|
|
|
epd = kmalloc(sizeof(*epd), GFP_KERNEL);
|
|
if (!epd) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
epd->devp = inode->i_private;
|
|
epd->pos = 0;
|
|
|
|
spin_lock_irq(&epd->devp->lock);
|
|
idr_for_each(&epd->devp->hwtid_idr, count_idrs, &count);
|
|
idr_for_each(&epd->devp->atid_idr, count_idrs, &count);
|
|
idr_for_each(&epd->devp->stid_idr, count_idrs, &count);
|
|
spin_unlock_irq(&epd->devp->lock);
|
|
|
|
epd->bufsize = count * 240;
|
|
epd->buf = vmalloc(epd->bufsize);
|
|
if (!epd->buf) {
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
spin_lock_irq(&epd->devp->lock);
|
|
idr_for_each(&epd->devp->hwtid_idr, dump_ep, epd);
|
|
idr_for_each(&epd->devp->atid_idr, dump_ep, epd);
|
|
idr_for_each(&epd->devp->stid_idr, dump_listen_ep, epd);
|
|
spin_unlock_irq(&epd->devp->lock);
|
|
|
|
file->private_data = epd;
|
|
goto out;
|
|
err1:
|
|
kfree(epd);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static const struct file_operations ep_debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ep_open,
|
|
.release = ep_release,
|
|
.read = debugfs_read,
|
|
};
|
|
|
|
static int setup_debugfs(struct c4iw_dev *devp)
|
|
{
|
|
if (!devp->debugfs_root)
|
|
return -1;
|
|
|
|
debugfs_create_file_size("qps", S_IWUSR, devp->debugfs_root,
|
|
(void *)devp, &qp_debugfs_fops, 4096);
|
|
|
|
debugfs_create_file_size("stags", S_IWUSR, devp->debugfs_root,
|
|
(void *)devp, &stag_debugfs_fops, 4096);
|
|
|
|
debugfs_create_file_size("stats", S_IWUSR, devp->debugfs_root,
|
|
(void *)devp, &stats_debugfs_fops, 4096);
|
|
|
|
debugfs_create_file_size("eps", S_IWUSR, devp->debugfs_root,
|
|
(void *)devp, &ep_debugfs_fops, 4096);
|
|
|
|
if (c4iw_wr_log)
|
|
debugfs_create_file_size("wr_log", S_IWUSR, devp->debugfs_root,
|
|
(void *)devp, &wr_log_debugfs_fops, 4096);
|
|
return 0;
|
|
}
|
|
|
|
void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
|
|
struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
struct list_head *pos, *nxt;
|
|
struct c4iw_qid_list *entry;
|
|
|
|
mutex_lock(&uctx->lock);
|
|
list_for_each_safe(pos, nxt, &uctx->qpids) {
|
|
entry = list_entry(pos, struct c4iw_qid_list, entry);
|
|
list_del_init(&entry->entry);
|
|
if (!(entry->qid & rdev->qpmask)) {
|
|
c4iw_put_resource(&rdev->resource.qid_table,
|
|
entry->qid);
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.qid.cur -= rdev->qpmask + 1;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
}
|
|
kfree(entry);
|
|
}
|
|
|
|
list_for_each_safe(pos, nxt, &uctx->qpids) {
|
|
entry = list_entry(pos, struct c4iw_qid_list, entry);
|
|
list_del_init(&entry->entry);
|
|
kfree(entry);
|
|
}
|
|
mutex_unlock(&uctx->lock);
|
|
}
|
|
|
|
void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev,
|
|
struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
INIT_LIST_HEAD(&uctx->qpids);
|
|
INIT_LIST_HEAD(&uctx->cqids);
|
|
mutex_init(&uctx->lock);
|
|
}
|
|
|
|
/* Caller takes care of locking if needed */
|
|
static int c4iw_rdev_open(struct c4iw_rdev *rdev)
|
|
{
|
|
int err;
|
|
|
|
c4iw_init_dev_ucontext(rdev, &rdev->uctx);
|
|
|
|
/*
|
|
* This implementation assumes udb_density == ucq_density! Eventually
|
|
* we might need to support this but for now fail the open. Also the
|
|
* cqid and qpid range must match for now.
|
|
*/
|
|
if (rdev->lldi.udb_density != rdev->lldi.ucq_density) {
|
|
pr_err(MOD "%s: unsupported udb/ucq densities %u/%u\n",
|
|
pci_name(rdev->lldi.pdev), rdev->lldi.udb_density,
|
|
rdev->lldi.ucq_density);
|
|
return -EINVAL;
|
|
}
|
|
if (rdev->lldi.vr->qp.start != rdev->lldi.vr->cq.start ||
|
|
rdev->lldi.vr->qp.size != rdev->lldi.vr->cq.size) {
|
|
pr_err(MOD "%s: unsupported qp and cq id ranges "
|
|
"qp start %u size %u cq start %u size %u\n",
|
|
pci_name(rdev->lldi.pdev), rdev->lldi.vr->qp.start,
|
|
rdev->lldi.vr->qp.size, rdev->lldi.vr->cq.size,
|
|
rdev->lldi.vr->cq.size);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rdev->qpmask = rdev->lldi.udb_density - 1;
|
|
rdev->cqmask = rdev->lldi.ucq_density - 1;
|
|
PDBG("%s dev %s stag start 0x%0x size 0x%0x num stags %d "
|
|
"pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x "
|
|
"qp qid start %u size %u cq qid start %u size %u\n",
|
|
__func__, pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start,
|
|
rdev->lldi.vr->stag.size, c4iw_num_stags(rdev),
|
|
rdev->lldi.vr->pbl.start,
|
|
rdev->lldi.vr->pbl.size, rdev->lldi.vr->rq.start,
|
|
rdev->lldi.vr->rq.size,
|
|
rdev->lldi.vr->qp.start,
|
|
rdev->lldi.vr->qp.size,
|
|
rdev->lldi.vr->cq.start,
|
|
rdev->lldi.vr->cq.size);
|
|
PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p "
|
|
"qpmask 0x%x cqmask 0x%x\n",
|
|
(unsigned)pci_resource_len(rdev->lldi.pdev, 2),
|
|
(void *)pci_resource_start(rdev->lldi.pdev, 2),
|
|
rdev->lldi.db_reg, rdev->lldi.gts_reg,
|
|
rdev->qpmask, rdev->cqmask);
|
|
|
|
if (c4iw_num_stags(rdev) == 0)
|
|
return -EINVAL;
|
|
|
|
rdev->stats.pd.total = T4_MAX_NUM_PD;
|
|
rdev->stats.stag.total = rdev->lldi.vr->stag.size;
|
|
rdev->stats.pbl.total = rdev->lldi.vr->pbl.size;
|
|
rdev->stats.rqt.total = rdev->lldi.vr->rq.size;
|
|
rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size;
|
|
rdev->stats.qid.total = rdev->lldi.vr->qp.size;
|
|
|
|
err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "error %d initializing resources\n", err);
|
|
return err;
|
|
}
|
|
err = c4iw_pblpool_create(rdev);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "error %d initializing pbl pool\n", err);
|
|
goto destroy_resource;
|
|
}
|
|
err = c4iw_rqtpool_create(rdev);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "error %d initializing rqt pool\n", err);
|
|
goto destroy_pblpool;
|
|
}
|
|
err = c4iw_ocqp_pool_create(rdev);
|
|
if (err) {
|
|
printk(KERN_ERR MOD "error %d initializing ocqp pool\n", err);
|
|
goto destroy_rqtpool;
|
|
}
|
|
rdev->status_page = (struct t4_dev_status_page *)
|
|
__get_free_page(GFP_KERNEL);
|
|
if (!rdev->status_page)
|
|
goto destroy_ocqp_pool;
|
|
rdev->status_page->qp_start = rdev->lldi.vr->qp.start;
|
|
rdev->status_page->qp_size = rdev->lldi.vr->qp.size;
|
|
rdev->status_page->cq_start = rdev->lldi.vr->cq.start;
|
|
rdev->status_page->cq_size = rdev->lldi.vr->cq.size;
|
|
|
|
if (c4iw_wr_log) {
|
|
rdev->wr_log = kzalloc((1 << c4iw_wr_log_size_order) *
|
|
sizeof(*rdev->wr_log), GFP_KERNEL);
|
|
if (rdev->wr_log) {
|
|
rdev->wr_log_size = 1 << c4iw_wr_log_size_order;
|
|
atomic_set(&rdev->wr_log_idx, 0);
|
|
} else {
|
|
pr_err(MOD "error allocating wr_log. Logging disabled\n");
|
|
}
|
|
}
|
|
|
|
rdev->status_page->db_off = 0;
|
|
|
|
return 0;
|
|
destroy_ocqp_pool:
|
|
c4iw_ocqp_pool_destroy(rdev);
|
|
destroy_rqtpool:
|
|
c4iw_rqtpool_destroy(rdev);
|
|
destroy_pblpool:
|
|
c4iw_pblpool_destroy(rdev);
|
|
destroy_resource:
|
|
c4iw_destroy_resource(&rdev->resource);
|
|
return err;
|
|
}
|
|
|
|
static void c4iw_rdev_close(struct c4iw_rdev *rdev)
|
|
{
|
|
kfree(rdev->wr_log);
|
|
free_page((unsigned long)rdev->status_page);
|
|
c4iw_pblpool_destroy(rdev);
|
|
c4iw_rqtpool_destroy(rdev);
|
|
c4iw_destroy_resource(&rdev->resource);
|
|
}
|
|
|
|
static void c4iw_dealloc(struct uld_ctx *ctx)
|
|
{
|
|
c4iw_rdev_close(&ctx->dev->rdev);
|
|
idr_destroy(&ctx->dev->cqidr);
|
|
idr_destroy(&ctx->dev->qpidr);
|
|
idr_destroy(&ctx->dev->mmidr);
|
|
idr_destroy(&ctx->dev->hwtid_idr);
|
|
idr_destroy(&ctx->dev->stid_idr);
|
|
idr_destroy(&ctx->dev->atid_idr);
|
|
if (ctx->dev->rdev.bar2_kva)
|
|
iounmap(ctx->dev->rdev.bar2_kva);
|
|
if (ctx->dev->rdev.oc_mw_kva)
|
|
iounmap(ctx->dev->rdev.oc_mw_kva);
|
|
ib_dealloc_device(&ctx->dev->ibdev);
|
|
ctx->dev = NULL;
|
|
}
|
|
|
|
static void c4iw_remove(struct uld_ctx *ctx)
|
|
{
|
|
PDBG("%s c4iw_dev %p\n", __func__, ctx->dev);
|
|
c4iw_unregister_device(ctx->dev);
|
|
c4iw_dealloc(ctx);
|
|
}
|
|
|
|
static int rdma_supported(const struct cxgb4_lld_info *infop)
|
|
{
|
|
return infop->vr->stag.size > 0 && infop->vr->pbl.size > 0 &&
|
|
infop->vr->rq.size > 0 && infop->vr->qp.size > 0 &&
|
|
infop->vr->cq.size > 0;
|
|
}
|
|
|
|
static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
|
|
{
|
|
struct c4iw_dev *devp;
|
|
int ret;
|
|
|
|
if (!rdma_supported(infop)) {
|
|
printk(KERN_INFO MOD "%s: RDMA not supported on this device.\n",
|
|
pci_name(infop->pdev));
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
if (!ocqp_supported(infop))
|
|
pr_info("%s: On-Chip Queues not supported on this device.\n",
|
|
pci_name(infop->pdev));
|
|
|
|
devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp));
|
|
if (!devp) {
|
|
printk(KERN_ERR MOD "Cannot allocate ib device\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
devp->rdev.lldi = *infop;
|
|
|
|
/* init various hw-queue params based on lld info */
|
|
PDBG("%s: Ing. padding boundary is %d, egrsstatuspagesize = %d\n",
|
|
__func__, devp->rdev.lldi.sge_ingpadboundary,
|
|
devp->rdev.lldi.sge_egrstatuspagesize);
|
|
|
|
devp->rdev.hw_queue.t4_eq_status_entries =
|
|
devp->rdev.lldi.sge_ingpadboundary > 64 ? 2 : 1;
|
|
devp->rdev.hw_queue.t4_max_eq_size = 65520;
|
|
devp->rdev.hw_queue.t4_max_iq_size = 65520;
|
|
devp->rdev.hw_queue.t4_max_rq_size = 8192 -
|
|
devp->rdev.hw_queue.t4_eq_status_entries - 1;
|
|
devp->rdev.hw_queue.t4_max_sq_size =
|
|
devp->rdev.hw_queue.t4_max_eq_size -
|
|
devp->rdev.hw_queue.t4_eq_status_entries - 1;
|
|
devp->rdev.hw_queue.t4_max_qp_depth =
|
|
devp->rdev.hw_queue.t4_max_rq_size;
|
|
devp->rdev.hw_queue.t4_max_cq_depth =
|
|
devp->rdev.hw_queue.t4_max_iq_size - 2;
|
|
devp->rdev.hw_queue.t4_stat_len =
|
|
devp->rdev.lldi.sge_egrstatuspagesize;
|
|
|
|
/*
|
|
* For T5/T6 devices, we map all of BAR2 with WC.
|
|
* For T4 devices with onchip qp mem, we map only that part
|
|
* of BAR2 with WC.
|
|
*/
|
|
devp->rdev.bar2_pa = pci_resource_start(devp->rdev.lldi.pdev, 2);
|
|
if (!is_t4(devp->rdev.lldi.adapter_type)) {
|
|
devp->rdev.bar2_kva = ioremap_wc(devp->rdev.bar2_pa,
|
|
pci_resource_len(devp->rdev.lldi.pdev, 2));
|
|
if (!devp->rdev.bar2_kva) {
|
|
pr_err(MOD "Unable to ioremap BAR2\n");
|
|
ib_dealloc_device(&devp->ibdev);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
} else if (ocqp_supported(infop)) {
|
|
devp->rdev.oc_mw_pa =
|
|
pci_resource_start(devp->rdev.lldi.pdev, 2) +
|
|
pci_resource_len(devp->rdev.lldi.pdev, 2) -
|
|
roundup_pow_of_two(devp->rdev.lldi.vr->ocq.size);
|
|
devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa,
|
|
devp->rdev.lldi.vr->ocq.size);
|
|
if (!devp->rdev.oc_mw_kva) {
|
|
pr_err(MOD "Unable to ioremap onchip mem\n");
|
|
ib_dealloc_device(&devp->ibdev);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
}
|
|
|
|
PDBG(KERN_INFO MOD "ocq memory: "
|
|
"hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n",
|
|
devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size,
|
|
devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva);
|
|
|
|
ret = c4iw_rdev_open(&devp->rdev);
|
|
if (ret) {
|
|
printk(KERN_ERR MOD "Unable to open CXIO rdev err %d\n", ret);
|
|
ib_dealloc_device(&devp->ibdev);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
idr_init(&devp->cqidr);
|
|
idr_init(&devp->qpidr);
|
|
idr_init(&devp->mmidr);
|
|
idr_init(&devp->hwtid_idr);
|
|
idr_init(&devp->stid_idr);
|
|
idr_init(&devp->atid_idr);
|
|
spin_lock_init(&devp->lock);
|
|
mutex_init(&devp->rdev.stats.lock);
|
|
mutex_init(&devp->db_mutex);
|
|
INIT_LIST_HEAD(&devp->db_fc_list);
|
|
devp->avail_ird = devp->rdev.lldi.max_ird_adapter;
|
|
|
|
if (c4iw_debugfs_root) {
|
|
devp->debugfs_root = debugfs_create_dir(
|
|
pci_name(devp->rdev.lldi.pdev),
|
|
c4iw_debugfs_root);
|
|
setup_debugfs(devp);
|
|
}
|
|
|
|
|
|
return devp;
|
|
}
|
|
|
|
static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
|
|
{
|
|
struct uld_ctx *ctx;
|
|
static int vers_printed;
|
|
int i;
|
|
|
|
if (!vers_printed++)
|
|
pr_info("Chelsio T4/T5 RDMA Driver - version %s\n",
|
|
DRV_VERSION);
|
|
|
|
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
|
|
if (!ctx) {
|
|
ctx = ERR_PTR(-ENOMEM);
|
|
goto out;
|
|
}
|
|
ctx->lldi = *infop;
|
|
|
|
PDBG("%s found device %s nchan %u nrxq %u ntxq %u nports %u\n",
|
|
__func__, pci_name(ctx->lldi.pdev),
|
|
ctx->lldi.nchan, ctx->lldi.nrxq,
|
|
ctx->lldi.ntxq, ctx->lldi.nports);
|
|
|
|
mutex_lock(&dev_mutex);
|
|
list_add_tail(&ctx->entry, &uld_ctx_list);
|
|
mutex_unlock(&dev_mutex);
|
|
|
|
for (i = 0; i < ctx->lldi.nrxq; i++)
|
|
PDBG("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]);
|
|
out:
|
|
return ctx;
|
|
}
|
|
|
|
static inline struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl,
|
|
const __be64 *rsp,
|
|
u32 pktshift)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
/*
|
|
* Allocate space for cpl_pass_accept_req which will be synthesized by
|
|
* driver. Once the driver synthesizes the request the skb will go
|
|
* through the regular cpl_pass_accept_req processing.
|
|
* The math here assumes sizeof cpl_pass_accept_req >= sizeof
|
|
* cpl_rx_pkt.
|
|
*/
|
|
skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req) +
|
|
sizeof(struct rss_header) - pktshift, GFP_ATOMIC);
|
|
if (unlikely(!skb))
|
|
return NULL;
|
|
|
|
__skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req) +
|
|
sizeof(struct rss_header) - pktshift);
|
|
|
|
/*
|
|
* This skb will contain:
|
|
* rss_header from the rspq descriptor (1 flit)
|
|
* cpl_rx_pkt struct from the rspq descriptor (2 flits)
|
|
* space for the difference between the size of an
|
|
* rx_pkt and pass_accept_req cpl (1 flit)
|
|
* the packet data from the gl
|
|
*/
|
|
skb_copy_to_linear_data(skb, rsp, sizeof(struct cpl_pass_accept_req) +
|
|
sizeof(struct rss_header));
|
|
skb_copy_to_linear_data_offset(skb, sizeof(struct rss_header) +
|
|
sizeof(struct cpl_pass_accept_req),
|
|
gl->va + pktshift,
|
|
gl->tot_len - pktshift);
|
|
return skb;
|
|
}
|
|
|
|
static inline int recv_rx_pkt(struct c4iw_dev *dev, const struct pkt_gl *gl,
|
|
const __be64 *rsp)
|
|
{
|
|
unsigned int opcode = *(u8 *)rsp;
|
|
struct sk_buff *skb;
|
|
|
|
if (opcode != CPL_RX_PKT)
|
|
goto out;
|
|
|
|
skb = copy_gl_to_skb_pkt(gl , rsp, dev->rdev.lldi.sge_pktshift);
|
|
if (skb == NULL)
|
|
goto out;
|
|
|
|
if (c4iw_handlers[opcode] == NULL) {
|
|
pr_info("%s no handler opcode 0x%x...\n", __func__,
|
|
opcode);
|
|
kfree_skb(skb);
|
|
goto out;
|
|
}
|
|
c4iw_handlers[opcode](dev, skb);
|
|
return 1;
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp,
|
|
const struct pkt_gl *gl)
|
|
{
|
|
struct uld_ctx *ctx = handle;
|
|
struct c4iw_dev *dev = ctx->dev;
|
|
struct sk_buff *skb;
|
|
u8 opcode;
|
|
|
|
if (gl == NULL) {
|
|
/* omit RSS and rsp_ctrl at end of descriptor */
|
|
unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8;
|
|
|
|
skb = alloc_skb(256, GFP_ATOMIC);
|
|
if (!skb)
|
|
goto nomem;
|
|
__skb_put(skb, len);
|
|
skb_copy_to_linear_data(skb, &rsp[1], len);
|
|
} else if (gl == CXGB4_MSG_AN) {
|
|
const struct rsp_ctrl *rc = (void *)rsp;
|
|
|
|
u32 qid = be32_to_cpu(rc->pldbuflen_qid);
|
|
c4iw_ev_handler(dev, qid);
|
|
return 0;
|
|
} else if (unlikely(*(u8 *)rsp != *(u8 *)gl->va)) {
|
|
if (recv_rx_pkt(dev, gl, rsp))
|
|
return 0;
|
|
|
|
pr_info("%s: unexpected FL contents at %p, " \
|
|
"RSS %#llx, FL %#llx, len %u\n",
|
|
pci_name(ctx->lldi.pdev), gl->va,
|
|
(unsigned long long)be64_to_cpu(*rsp),
|
|
(unsigned long long)be64_to_cpu(
|
|
*(__force __be64 *)gl->va),
|
|
gl->tot_len);
|
|
|
|
return 0;
|
|
} else {
|
|
skb = cxgb4_pktgl_to_skb(gl, 128, 128);
|
|
if (unlikely(!skb))
|
|
goto nomem;
|
|
}
|
|
|
|
opcode = *(u8 *)rsp;
|
|
if (c4iw_handlers[opcode]) {
|
|
c4iw_handlers[opcode](dev, skb);
|
|
} else {
|
|
pr_info("%s no handler opcode 0x%x...\n", __func__,
|
|
opcode);
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
return 0;
|
|
nomem:
|
|
return -1;
|
|
}
|
|
|
|
static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state)
|
|
{
|
|
struct uld_ctx *ctx = handle;
|
|
|
|
PDBG("%s new_state %u\n", __func__, new_state);
|
|
switch (new_state) {
|
|
case CXGB4_STATE_UP:
|
|
printk(KERN_INFO MOD "%s: Up\n", pci_name(ctx->lldi.pdev));
|
|
if (!ctx->dev) {
|
|
int ret;
|
|
|
|
ctx->dev = c4iw_alloc(&ctx->lldi);
|
|
if (IS_ERR(ctx->dev)) {
|
|
printk(KERN_ERR MOD
|
|
"%s: initialization failed: %ld\n",
|
|
pci_name(ctx->lldi.pdev),
|
|
PTR_ERR(ctx->dev));
|
|
ctx->dev = NULL;
|
|
break;
|
|
}
|
|
ret = c4iw_register_device(ctx->dev);
|
|
if (ret) {
|
|
printk(KERN_ERR MOD
|
|
"%s: RDMA registration failed: %d\n",
|
|
pci_name(ctx->lldi.pdev), ret);
|
|
c4iw_dealloc(ctx);
|
|
}
|
|
}
|
|
break;
|
|
case CXGB4_STATE_DOWN:
|
|
printk(KERN_INFO MOD "%s: Down\n",
|
|
pci_name(ctx->lldi.pdev));
|
|
if (ctx->dev)
|
|
c4iw_remove(ctx);
|
|
break;
|
|
case CXGB4_STATE_START_RECOVERY:
|
|
printk(KERN_INFO MOD "%s: Fatal Error\n",
|
|
pci_name(ctx->lldi.pdev));
|
|
if (ctx->dev) {
|
|
struct ib_event event;
|
|
|
|
ctx->dev->rdev.flags |= T4_FATAL_ERROR;
|
|
memset(&event, 0, sizeof event);
|
|
event.event = IB_EVENT_DEVICE_FATAL;
|
|
event.device = &ctx->dev->ibdev;
|
|
ib_dispatch_event(&event);
|
|
c4iw_remove(ctx);
|
|
}
|
|
break;
|
|
case CXGB4_STATE_DETACH:
|
|
printk(KERN_INFO MOD "%s: Detach\n",
|
|
pci_name(ctx->lldi.pdev));
|
|
if (ctx->dev)
|
|
c4iw_remove(ctx);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int disable_qp_db(int id, void *p, void *data)
|
|
{
|
|
struct c4iw_qp *qp = p;
|
|
|
|
t4_disable_wq_db(&qp->wq);
|
|
return 0;
|
|
}
|
|
|
|
static void stop_queues(struct uld_ctx *ctx)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ctx->dev->lock, flags);
|
|
ctx->dev->rdev.stats.db_state_transitions++;
|
|
ctx->dev->db_state = STOPPED;
|
|
if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED)
|
|
idr_for_each(&ctx->dev->qpidr, disable_qp_db, NULL);
|
|
else
|
|
ctx->dev->rdev.status_page->db_off = 1;
|
|
spin_unlock_irqrestore(&ctx->dev->lock, flags);
|
|
}
|
|
|
|
static int enable_qp_db(int id, void *p, void *data)
|
|
{
|
|
struct c4iw_qp *qp = p;
|
|
|
|
t4_enable_wq_db(&qp->wq);
|
|
return 0;
|
|
}
|
|
|
|
static void resume_rc_qp(struct c4iw_qp *qp)
|
|
{
|
|
spin_lock(&qp->lock);
|
|
t4_ring_sq_db(&qp->wq, qp->wq.sq.wq_pidx_inc, NULL);
|
|
qp->wq.sq.wq_pidx_inc = 0;
|
|
t4_ring_rq_db(&qp->wq, qp->wq.rq.wq_pidx_inc, NULL);
|
|
qp->wq.rq.wq_pidx_inc = 0;
|
|
spin_unlock(&qp->lock);
|
|
}
|
|
|
|
static void resume_a_chunk(struct uld_ctx *ctx)
|
|
{
|
|
int i;
|
|
struct c4iw_qp *qp;
|
|
|
|
for (i = 0; i < DB_FC_RESUME_SIZE; i++) {
|
|
qp = list_first_entry(&ctx->dev->db_fc_list, struct c4iw_qp,
|
|
db_fc_entry);
|
|
list_del_init(&qp->db_fc_entry);
|
|
resume_rc_qp(qp);
|
|
if (list_empty(&ctx->dev->db_fc_list))
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void resume_queues(struct uld_ctx *ctx)
|
|
{
|
|
spin_lock_irq(&ctx->dev->lock);
|
|
if (ctx->dev->db_state != STOPPED)
|
|
goto out;
|
|
ctx->dev->db_state = FLOW_CONTROL;
|
|
while (1) {
|
|
if (list_empty(&ctx->dev->db_fc_list)) {
|
|
WARN_ON(ctx->dev->db_state != FLOW_CONTROL);
|
|
ctx->dev->db_state = NORMAL;
|
|
ctx->dev->rdev.stats.db_state_transitions++;
|
|
if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) {
|
|
idr_for_each(&ctx->dev->qpidr, enable_qp_db,
|
|
NULL);
|
|
} else {
|
|
ctx->dev->rdev.status_page->db_off = 0;
|
|
}
|
|
break;
|
|
} else {
|
|
if (cxgb4_dbfifo_count(ctx->dev->rdev.lldi.ports[0], 1)
|
|
< (ctx->dev->rdev.lldi.dbfifo_int_thresh <<
|
|
DB_FC_DRAIN_THRESH)) {
|
|
resume_a_chunk(ctx);
|
|
}
|
|
if (!list_empty(&ctx->dev->db_fc_list)) {
|
|
spin_unlock_irq(&ctx->dev->lock);
|
|
if (DB_FC_RESUME_DELAY) {
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(DB_FC_RESUME_DELAY);
|
|
}
|
|
spin_lock_irq(&ctx->dev->lock);
|
|
if (ctx->dev->db_state != FLOW_CONTROL)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
out:
|
|
if (ctx->dev->db_state != NORMAL)
|
|
ctx->dev->rdev.stats.db_fc_interruptions++;
|
|
spin_unlock_irq(&ctx->dev->lock);
|
|
}
|
|
|
|
struct qp_list {
|
|
unsigned idx;
|
|
struct c4iw_qp **qps;
|
|
};
|
|
|
|
static int add_and_ref_qp(int id, void *p, void *data)
|
|
{
|
|
struct qp_list *qp_listp = data;
|
|
struct c4iw_qp *qp = p;
|
|
|
|
c4iw_qp_add_ref(&qp->ibqp);
|
|
qp_listp->qps[qp_listp->idx++] = qp;
|
|
return 0;
|
|
}
|
|
|
|
static int count_qps(int id, void *p, void *data)
|
|
{
|
|
unsigned *countp = data;
|
|
(*countp)++;
|
|
return 0;
|
|
}
|
|
|
|
static void deref_qps(struct qp_list *qp_list)
|
|
{
|
|
int idx;
|
|
|
|
for (idx = 0; idx < qp_list->idx; idx++)
|
|
c4iw_qp_rem_ref(&qp_list->qps[idx]->ibqp);
|
|
}
|
|
|
|
static void recover_lost_dbs(struct uld_ctx *ctx, struct qp_list *qp_list)
|
|
{
|
|
int idx;
|
|
int ret;
|
|
|
|
for (idx = 0; idx < qp_list->idx; idx++) {
|
|
struct c4iw_qp *qp = qp_list->qps[idx];
|
|
|
|
spin_lock_irq(&qp->rhp->lock);
|
|
spin_lock(&qp->lock);
|
|
ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0],
|
|
qp->wq.sq.qid,
|
|
t4_sq_host_wq_pidx(&qp->wq),
|
|
t4_sq_wq_size(&qp->wq));
|
|
if (ret) {
|
|
pr_err(MOD "%s: Fatal error - "
|
|
"DB overflow recovery failed - "
|
|
"error syncing SQ qid %u\n",
|
|
pci_name(ctx->lldi.pdev), qp->wq.sq.qid);
|
|
spin_unlock(&qp->lock);
|
|
spin_unlock_irq(&qp->rhp->lock);
|
|
return;
|
|
}
|
|
qp->wq.sq.wq_pidx_inc = 0;
|
|
|
|
ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0],
|
|
qp->wq.rq.qid,
|
|
t4_rq_host_wq_pidx(&qp->wq),
|
|
t4_rq_wq_size(&qp->wq));
|
|
|
|
if (ret) {
|
|
pr_err(MOD "%s: Fatal error - "
|
|
"DB overflow recovery failed - "
|
|
"error syncing RQ qid %u\n",
|
|
pci_name(ctx->lldi.pdev), qp->wq.rq.qid);
|
|
spin_unlock(&qp->lock);
|
|
spin_unlock_irq(&qp->rhp->lock);
|
|
return;
|
|
}
|
|
qp->wq.rq.wq_pidx_inc = 0;
|
|
spin_unlock(&qp->lock);
|
|
spin_unlock_irq(&qp->rhp->lock);
|
|
|
|
/* Wait for the dbfifo to drain */
|
|
while (cxgb4_dbfifo_count(qp->rhp->rdev.lldi.ports[0], 1) > 0) {
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(usecs_to_jiffies(10));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void recover_queues(struct uld_ctx *ctx)
|
|
{
|
|
int count = 0;
|
|
struct qp_list qp_list;
|
|
int ret;
|
|
|
|
/* slow everybody down */
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(usecs_to_jiffies(1000));
|
|
|
|
/* flush the SGE contexts */
|
|
ret = cxgb4_flush_eq_cache(ctx->dev->rdev.lldi.ports[0]);
|
|
if (ret) {
|
|
printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n",
|
|
pci_name(ctx->lldi.pdev));
|
|
return;
|
|
}
|
|
|
|
/* Count active queues so we can build a list of queues to recover */
|
|
spin_lock_irq(&ctx->dev->lock);
|
|
WARN_ON(ctx->dev->db_state != STOPPED);
|
|
ctx->dev->db_state = RECOVERY;
|
|
idr_for_each(&ctx->dev->qpidr, count_qps, &count);
|
|
|
|
qp_list.qps = kzalloc(count * sizeof *qp_list.qps, GFP_ATOMIC);
|
|
if (!qp_list.qps) {
|
|
printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n",
|
|
pci_name(ctx->lldi.pdev));
|
|
spin_unlock_irq(&ctx->dev->lock);
|
|
return;
|
|
}
|
|
qp_list.idx = 0;
|
|
|
|
/* add and ref each qp so it doesn't get freed */
|
|
idr_for_each(&ctx->dev->qpidr, add_and_ref_qp, &qp_list);
|
|
|
|
spin_unlock_irq(&ctx->dev->lock);
|
|
|
|
/* now traverse the list in a safe context to recover the db state*/
|
|
recover_lost_dbs(ctx, &qp_list);
|
|
|
|
/* we're almost done! deref the qps and clean up */
|
|
deref_qps(&qp_list);
|
|
kfree(qp_list.qps);
|
|
|
|
spin_lock_irq(&ctx->dev->lock);
|
|
WARN_ON(ctx->dev->db_state != RECOVERY);
|
|
ctx->dev->db_state = STOPPED;
|
|
spin_unlock_irq(&ctx->dev->lock);
|
|
}
|
|
|
|
static int c4iw_uld_control(void *handle, enum cxgb4_control control, ...)
|
|
{
|
|
struct uld_ctx *ctx = handle;
|
|
|
|
switch (control) {
|
|
case CXGB4_CONTROL_DB_FULL:
|
|
stop_queues(ctx);
|
|
ctx->dev->rdev.stats.db_full++;
|
|
break;
|
|
case CXGB4_CONTROL_DB_EMPTY:
|
|
resume_queues(ctx);
|
|
mutex_lock(&ctx->dev->rdev.stats.lock);
|
|
ctx->dev->rdev.stats.db_empty++;
|
|
mutex_unlock(&ctx->dev->rdev.stats.lock);
|
|
break;
|
|
case CXGB4_CONTROL_DB_DROP:
|
|
recover_queues(ctx);
|
|
mutex_lock(&ctx->dev->rdev.stats.lock);
|
|
ctx->dev->rdev.stats.db_drop++;
|
|
mutex_unlock(&ctx->dev->rdev.stats.lock);
|
|
break;
|
|
default:
|
|
printk(KERN_WARNING MOD "%s: unknown control cmd %u\n",
|
|
pci_name(ctx->lldi.pdev), control);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct cxgb4_uld_info c4iw_uld_info = {
|
|
.name = DRV_NAME,
|
|
.add = c4iw_uld_add,
|
|
.rx_handler = c4iw_uld_rx_handler,
|
|
.state_change = c4iw_uld_state_change,
|
|
.control = c4iw_uld_control,
|
|
};
|
|
|
|
static int __init c4iw_init_module(void)
|
|
{
|
|
int err;
|
|
|
|
err = c4iw_cm_init();
|
|
if (err)
|
|
return err;
|
|
|
|
c4iw_debugfs_root = debugfs_create_dir(DRV_NAME, NULL);
|
|
if (!c4iw_debugfs_root)
|
|
printk(KERN_WARNING MOD
|
|
"could not create debugfs entry, continuing\n");
|
|
|
|
cxgb4_register_uld(CXGB4_ULD_RDMA, &c4iw_uld_info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit c4iw_exit_module(void)
|
|
{
|
|
struct uld_ctx *ctx, *tmp;
|
|
|
|
mutex_lock(&dev_mutex);
|
|
list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) {
|
|
if (ctx->dev)
|
|
c4iw_remove(ctx);
|
|
kfree(ctx);
|
|
}
|
|
mutex_unlock(&dev_mutex);
|
|
cxgb4_unregister_uld(CXGB4_ULD_RDMA);
|
|
c4iw_cm_term();
|
|
debugfs_remove_recursive(c4iw_debugfs_root);
|
|
}
|
|
|
|
module_init(c4iw_init_module);
|
|
module_exit(c4iw_exit_module);
|