1364 lines
31 KiB
C
1364 lines
31 KiB
C
// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
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/*
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* Copyright(c) 2015-2018 Intel Corporation.
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*/
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/ratelimit.h>
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#include <linux/fault-inject.h>
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#include "hfi.h"
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#include "trace.h"
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#include "debugfs.h"
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#include "device.h"
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#include "qp.h"
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#include "sdma.h"
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#include "fault.h"
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static struct dentry *hfi1_dbg_root;
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/* wrappers to enforce srcu in seq file */
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ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size,
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loff_t *ppos)
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{
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struct dentry *d = file->f_path.dentry;
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ssize_t r;
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r = debugfs_file_get(d);
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if (unlikely(r))
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return r;
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r = seq_read(file, buf, size, ppos);
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debugfs_file_put(d);
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return r;
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}
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loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence)
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{
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struct dentry *d = file->f_path.dentry;
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loff_t r;
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r = debugfs_file_get(d);
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if (unlikely(r))
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return r;
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r = seq_lseek(file, offset, whence);
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debugfs_file_put(d);
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return r;
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}
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#define private2dd(file) (file_inode(file)->i_private)
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#define private2ppd(file) (file_inode(file)->i_private)
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static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
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{
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struct hfi1_opcode_stats_perctx *opstats;
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if (*pos >= ARRAY_SIZE(opstats->stats))
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return NULL;
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return pos;
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}
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static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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struct hfi1_opcode_stats_perctx *opstats;
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++*pos;
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if (*pos >= ARRAY_SIZE(opstats->stats))
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return NULL;
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return pos;
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}
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static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
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{
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}
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static int opcode_stats_show(struct seq_file *s, u8 i, u64 packets, u64 bytes)
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{
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if (!packets && !bytes)
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return SEQ_SKIP;
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seq_printf(s, "%02x %llu/%llu\n", i,
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(unsigned long long)packets,
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(unsigned long long)bytes);
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return 0;
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}
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static int _opcode_stats_seq_show(struct seq_file *s, void *v)
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{
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loff_t *spos = v;
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loff_t i = *spos, j;
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u64 n_packets = 0, n_bytes = 0;
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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struct hfi1_ctxtdata *rcd;
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for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) {
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rcd = hfi1_rcd_get_by_index(dd, j);
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if (rcd) {
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n_packets += rcd->opstats->stats[i].n_packets;
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n_bytes += rcd->opstats->stats[i].n_bytes;
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}
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hfi1_rcd_put(rcd);
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}
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return opcode_stats_show(s, i, n_packets, n_bytes);
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}
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DEBUGFS_SEQ_FILE_OPS(opcode_stats);
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DEBUGFS_SEQ_FILE_OPEN(opcode_stats)
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DEBUGFS_FILE_OPS(opcode_stats);
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static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
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{
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return _opcode_stats_seq_start(s, pos);
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}
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static void *_tx_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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return _opcode_stats_seq_next(s, v, pos);
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}
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static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v)
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{
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}
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static int _tx_opcode_stats_seq_show(struct seq_file *s, void *v)
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{
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loff_t *spos = v;
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loff_t i = *spos;
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int j;
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u64 n_packets = 0, n_bytes = 0;
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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for_each_possible_cpu(j) {
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struct hfi1_opcode_stats_perctx *s =
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per_cpu_ptr(dd->tx_opstats, j);
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n_packets += s->stats[i].n_packets;
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n_bytes += s->stats[i].n_bytes;
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}
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return opcode_stats_show(s, i, n_packets, n_bytes);
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}
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DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats);
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DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats)
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DEBUGFS_FILE_OPS(tx_opcode_stats);
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static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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if (!*pos)
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return SEQ_START_TOKEN;
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if (*pos >= dd->first_dyn_alloc_ctxt)
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return NULL;
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return pos;
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}
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static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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if (v == SEQ_START_TOKEN)
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return pos;
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++*pos;
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if (*pos >= dd->first_dyn_alloc_ctxt)
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return NULL;
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return pos;
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}
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static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
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{
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/* nothing allocated */
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}
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static int _ctx_stats_seq_show(struct seq_file *s, void *v)
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{
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loff_t *spos;
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loff_t i, j;
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u64 n_packets = 0;
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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struct hfi1_ctxtdata *rcd;
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if (v == SEQ_START_TOKEN) {
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seq_puts(s, "Ctx:npkts\n");
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return 0;
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}
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spos = v;
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i = *spos;
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rcd = hfi1_rcd_get_by_index_safe(dd, i);
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if (!rcd)
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return SEQ_SKIP;
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for (j = 0; j < ARRAY_SIZE(rcd->opstats->stats); j++)
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n_packets += rcd->opstats->stats[j].n_packets;
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hfi1_rcd_put(rcd);
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if (!n_packets)
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return SEQ_SKIP;
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seq_printf(s, " %llu:%llu\n", i, n_packets);
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return 0;
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}
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DEBUGFS_SEQ_FILE_OPS(ctx_stats);
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DEBUGFS_SEQ_FILE_OPEN(ctx_stats)
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DEBUGFS_FILE_OPS(ctx_stats);
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static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
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__acquires(RCU)
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{
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struct rvt_qp_iter *iter;
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loff_t n = *pos;
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iter = rvt_qp_iter_init(s->private, 0, NULL);
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/* stop calls rcu_read_unlock */
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rcu_read_lock();
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if (!iter)
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return NULL;
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do {
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if (rvt_qp_iter_next(iter)) {
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kfree(iter);
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return NULL;
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}
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} while (n--);
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return iter;
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}
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static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
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loff_t *pos)
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__must_hold(RCU)
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{
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struct rvt_qp_iter *iter = iter_ptr;
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(*pos)++;
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if (rvt_qp_iter_next(iter)) {
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kfree(iter);
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return NULL;
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}
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return iter;
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}
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static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
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__releases(RCU)
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{
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rcu_read_unlock();
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}
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static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
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{
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struct rvt_qp_iter *iter = iter_ptr;
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if (!iter)
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return 0;
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qp_iter_print(s, iter);
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return 0;
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}
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DEBUGFS_SEQ_FILE_OPS(qp_stats);
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DEBUGFS_SEQ_FILE_OPEN(qp_stats)
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DEBUGFS_FILE_OPS(qp_stats);
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static void *_sdes_seq_start(struct seq_file *s, loff_t *pos)
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{
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struct hfi1_ibdev *ibd;
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struct hfi1_devdata *dd;
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ibd = (struct hfi1_ibdev *)s->private;
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dd = dd_from_dev(ibd);
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if (!dd->per_sdma || *pos >= dd->num_sdma)
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return NULL;
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return pos;
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}
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static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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++*pos;
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if (!dd->per_sdma || *pos >= dd->num_sdma)
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return NULL;
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return pos;
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}
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static void _sdes_seq_stop(struct seq_file *s, void *v)
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{
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}
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static int _sdes_seq_show(struct seq_file *s, void *v)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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loff_t *spos = v;
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loff_t i = *spos;
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sdma_seqfile_dump_sde(s, &dd->per_sdma[i]);
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return 0;
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}
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DEBUGFS_SEQ_FILE_OPS(sdes);
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DEBUGFS_SEQ_FILE_OPEN(sdes)
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DEBUGFS_FILE_OPS(sdes);
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static void *_rcds_seq_start(struct seq_file *s, loff_t *pos)
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{
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struct hfi1_ibdev *ibd;
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struct hfi1_devdata *dd;
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ibd = (struct hfi1_ibdev *)s->private;
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dd = dd_from_dev(ibd);
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if (!dd->rcd || *pos >= dd->n_krcv_queues)
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return NULL;
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return pos;
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}
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static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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++*pos;
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if (!dd->rcd || *pos >= dd->num_rcv_contexts)
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return NULL;
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return pos;
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}
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static void _rcds_seq_stop(struct seq_file *s, void *v)
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{
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}
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static int _rcds_seq_show(struct seq_file *s, void *v)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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struct hfi1_ctxtdata *rcd;
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loff_t *spos = v;
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loff_t i = *spos;
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rcd = hfi1_rcd_get_by_index_safe(dd, i);
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if (rcd)
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seqfile_dump_rcd(s, rcd);
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hfi1_rcd_put(rcd);
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return 0;
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}
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DEBUGFS_SEQ_FILE_OPS(rcds);
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DEBUGFS_SEQ_FILE_OPEN(rcds)
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DEBUGFS_FILE_OPS(rcds);
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static void *_pios_seq_start(struct seq_file *s, loff_t *pos)
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{
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struct hfi1_ibdev *ibd;
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struct hfi1_devdata *dd;
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ibd = (struct hfi1_ibdev *)s->private;
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dd = dd_from_dev(ibd);
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if (!dd->send_contexts || *pos >= dd->num_send_contexts)
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return NULL;
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return pos;
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}
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static void *_pios_seq_next(struct seq_file *s, void *v, loff_t *pos)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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++*pos;
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if (!dd->send_contexts || *pos >= dd->num_send_contexts)
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return NULL;
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return pos;
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}
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static void _pios_seq_stop(struct seq_file *s, void *v)
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{
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}
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static int _pios_seq_show(struct seq_file *s, void *v)
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{
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struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
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struct hfi1_devdata *dd = dd_from_dev(ibd);
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struct send_context_info *sci;
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loff_t *spos = v;
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loff_t i = *spos;
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unsigned long flags;
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spin_lock_irqsave(&dd->sc_lock, flags);
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sci = &dd->send_contexts[i];
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if (sci && sci->type != SC_USER && sci->allocated && sci->sc)
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seqfile_dump_sci(s, i, sci);
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spin_unlock_irqrestore(&dd->sc_lock, flags);
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return 0;
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}
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DEBUGFS_SEQ_FILE_OPS(pios);
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DEBUGFS_SEQ_FILE_OPEN(pios)
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DEBUGFS_FILE_OPS(pios);
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/* read the per-device counters */
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static ssize_t dev_counters_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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u64 *counters;
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size_t avail;
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struct hfi1_devdata *dd;
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ssize_t rval;
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dd = private2dd(file);
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avail = hfi1_read_cntrs(dd, NULL, &counters);
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rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
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return rval;
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}
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/* read the per-device counters */
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static ssize_t dev_names_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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char *names;
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size_t avail;
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struct hfi1_devdata *dd;
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ssize_t rval;
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dd = private2dd(file);
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avail = hfi1_read_cntrs(dd, &names, NULL);
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rval = simple_read_from_buffer(buf, count, ppos, names, avail);
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return rval;
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}
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struct counter_info {
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char *name;
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const struct file_operations ops;
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};
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/*
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* Could use file_inode(file)->i_ino to figure out which file,
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* instead of separate routine for each, but for now, this works...
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*/
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/* read the per-port names (same for each port) */
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static ssize_t portnames_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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char *names;
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size_t avail;
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struct hfi1_devdata *dd;
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ssize_t rval;
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dd = private2dd(file);
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avail = hfi1_read_portcntrs(dd->pport, &names, NULL);
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rval = simple_read_from_buffer(buf, count, ppos, names, avail);
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return rval;
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}
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/* read the per-port counters */
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static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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u64 *counters;
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size_t avail;
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struct hfi1_pportdata *ppd;
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ssize_t rval;
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ppd = private2ppd(file);
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avail = hfi1_read_portcntrs(ppd, NULL, &counters);
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rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
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return rval;
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}
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static void check_dyn_flag(u64 scratch0, char *p, int size, int *used,
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int this_hfi, int hfi, u32 flag, const char *what)
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{
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u32 mask;
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mask = flag << (hfi ? CR_DYN_SHIFT : 0);
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if (scratch0 & mask) {
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*used += scnprintf(p + *used, size - *used,
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" 0x%08x - HFI%d %s in use, %s device\n",
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mask, hfi, what,
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this_hfi == hfi ? "this" : "other");
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}
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}
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static ssize_t asic_flags_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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struct hfi1_pportdata *ppd;
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struct hfi1_devdata *dd;
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u64 scratch0;
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char *tmp;
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int ret = 0;
|
|
int size;
|
|
int used;
|
|
int i;
|
|
|
|
ppd = private2ppd(file);
|
|
dd = ppd->dd;
|
|
size = PAGE_SIZE;
|
|
used = 0;
|
|
tmp = kmalloc(size, GFP_KERNEL);
|
|
if (!tmp)
|
|
return -ENOMEM;
|
|
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
used += scnprintf(tmp + used, size - used,
|
|
"Resource flags: 0x%016llx\n", scratch0);
|
|
|
|
/* check permanent flag */
|
|
if (scratch0 & CR_THERM_INIT) {
|
|
used += scnprintf(tmp + used, size - used,
|
|
" 0x%08x - thermal monitoring initialized\n",
|
|
(u32)CR_THERM_INIT);
|
|
}
|
|
|
|
/* check each dynamic flag on each HFI */
|
|
for (i = 0; i < 2; i++) {
|
|
check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
|
|
CR_SBUS, "SBus");
|
|
check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
|
|
CR_EPROM, "EPROM");
|
|
check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
|
|
CR_I2C1, "i2c chain 1");
|
|
check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
|
|
CR_I2C2, "i2c chain 2");
|
|
}
|
|
used += scnprintf(tmp + used, size - used, "Write bits to clear\n");
|
|
|
|
ret = simple_read_from_buffer(buf, count, ppos, tmp, used);
|
|
kfree(tmp);
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t asic_flags_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
struct hfi1_devdata *dd;
|
|
char *buff;
|
|
int ret;
|
|
unsigned long long value;
|
|
u64 scratch0;
|
|
u64 clear;
|
|
|
|
ppd = private2ppd(file);
|
|
dd = ppd->dd;
|
|
|
|
/* zero terminate and read the expected integer */
|
|
buff = memdup_user_nul(buf, count);
|
|
if (IS_ERR(buff))
|
|
return PTR_ERR(buff);
|
|
|
|
ret = kstrtoull(buff, 0, &value);
|
|
if (ret)
|
|
goto do_free;
|
|
clear = value;
|
|
|
|
/* obtain exclusive access */
|
|
mutex_lock(&dd->asic_data->asic_resource_mutex);
|
|
acquire_hw_mutex(dd);
|
|
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
scratch0 &= ~clear;
|
|
write_csr(dd, ASIC_CFG_SCRATCH, scratch0);
|
|
/* force write to be visible to other HFI on another OS */
|
|
(void)read_csr(dd, ASIC_CFG_SCRATCH);
|
|
|
|
release_hw_mutex(dd);
|
|
mutex_unlock(&dd->asic_data->asic_resource_mutex);
|
|
|
|
/* return the number of bytes written */
|
|
ret = count;
|
|
|
|
do_free:
|
|
kfree(buff);
|
|
return ret;
|
|
}
|
|
|
|
/* read the dc8051 memory */
|
|
static ssize_t dc8051_memory_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd = private2ppd(file);
|
|
ssize_t rval;
|
|
void *tmp;
|
|
loff_t start, end;
|
|
|
|
/* the checks below expect the position to be positive */
|
|
if (*ppos < 0)
|
|
return -EINVAL;
|
|
|
|
tmp = kzalloc(DC8051_DATA_MEM_SIZE, GFP_KERNEL);
|
|
if (!tmp)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Fill in the requested portion of the temporary buffer from the
|
|
* 8051 memory. The 8051 memory read is done in terms of 8 bytes.
|
|
* Adjust start and end to fit. Skip reading anything if out of
|
|
* range.
|
|
*/
|
|
start = *ppos & ~0x7; /* round down */
|
|
if (start < DC8051_DATA_MEM_SIZE) {
|
|
end = (*ppos + count + 7) & ~0x7; /* round up */
|
|
if (end > DC8051_DATA_MEM_SIZE)
|
|
end = DC8051_DATA_MEM_SIZE;
|
|
rval = read_8051_data(ppd->dd, start, end - start,
|
|
(u64 *)(tmp + start));
|
|
if (rval)
|
|
goto done;
|
|
}
|
|
|
|
rval = simple_read_from_buffer(buf, count, ppos, tmp,
|
|
DC8051_DATA_MEM_SIZE);
|
|
done:
|
|
kfree(tmp);
|
|
return rval;
|
|
}
|
|
|
|
static ssize_t debugfs_lcb_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd = private2ppd(file);
|
|
struct hfi1_devdata *dd = ppd->dd;
|
|
unsigned long total, csr_off;
|
|
u64 data;
|
|
|
|
if (*ppos < 0)
|
|
return -EINVAL;
|
|
/* only read 8 byte quantities */
|
|
if ((count % 8) != 0)
|
|
return -EINVAL;
|
|
/* offset must be 8-byte aligned */
|
|
if ((*ppos % 8) != 0)
|
|
return -EINVAL;
|
|
/* do nothing if out of range or zero count */
|
|
if (*ppos >= (LCB_END - LCB_START) || !count)
|
|
return 0;
|
|
/* reduce count if needed */
|
|
if (*ppos + count > LCB_END - LCB_START)
|
|
count = (LCB_END - LCB_START) - *ppos;
|
|
|
|
csr_off = LCB_START + *ppos;
|
|
for (total = 0; total < count; total += 8, csr_off += 8) {
|
|
if (read_lcb_csr(dd, csr_off, (u64 *)&data))
|
|
break; /* failed */
|
|
if (put_user(data, (unsigned long __user *)(buf + total)))
|
|
break;
|
|
}
|
|
*ppos += total;
|
|
return total;
|
|
}
|
|
|
|
static ssize_t debugfs_lcb_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd = private2ppd(file);
|
|
struct hfi1_devdata *dd = ppd->dd;
|
|
unsigned long total, csr_off, data;
|
|
|
|
if (*ppos < 0)
|
|
return -EINVAL;
|
|
/* only write 8 byte quantities */
|
|
if ((count % 8) != 0)
|
|
return -EINVAL;
|
|
/* offset must be 8-byte aligned */
|
|
if ((*ppos % 8) != 0)
|
|
return -EINVAL;
|
|
/* do nothing if out of range or zero count */
|
|
if (*ppos >= (LCB_END - LCB_START) || !count)
|
|
return 0;
|
|
/* reduce count if needed */
|
|
if (*ppos + count > LCB_END - LCB_START)
|
|
count = (LCB_END - LCB_START) - *ppos;
|
|
|
|
csr_off = LCB_START + *ppos;
|
|
for (total = 0; total < count; total += 8, csr_off += 8) {
|
|
if (get_user(data, (unsigned long __user *)(buf + total)))
|
|
break;
|
|
if (write_lcb_csr(dd, csr_off, data))
|
|
break; /* failed */
|
|
}
|
|
*ppos += total;
|
|
return total;
|
|
}
|
|
|
|
/*
|
|
* read the per-port QSFP data for ppd
|
|
*/
|
|
static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
char *tmp;
|
|
int ret;
|
|
|
|
ppd = private2ppd(file);
|
|
tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!tmp)
|
|
return -ENOMEM;
|
|
|
|
ret = qsfp_dump(ppd, tmp, PAGE_SIZE);
|
|
if (ret > 0)
|
|
ret = simple_read_from_buffer(buf, count, ppos, tmp, ret);
|
|
kfree(tmp);
|
|
return ret;
|
|
}
|
|
|
|
/* Do an i2c write operation on the chain for the given HFI. */
|
|
static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
char *buff;
|
|
int ret;
|
|
int i2c_addr;
|
|
int offset;
|
|
int total_written;
|
|
|
|
ppd = private2ppd(file);
|
|
|
|
/* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
|
|
i2c_addr = (*ppos >> 16) & 0xffff;
|
|
offset = *ppos & 0xffff;
|
|
|
|
/* explicitly reject invalid address 0 to catch cp and cat */
|
|
if (i2c_addr == 0)
|
|
return -EINVAL;
|
|
|
|
buff = memdup_user(buf, count);
|
|
if (IS_ERR(buff))
|
|
return PTR_ERR(buff);
|
|
|
|
total_written = i2c_write(ppd, target, i2c_addr, offset, buff, count);
|
|
if (total_written < 0) {
|
|
ret = total_written;
|
|
goto _free;
|
|
}
|
|
|
|
*ppos += total_written;
|
|
|
|
ret = total_written;
|
|
|
|
_free:
|
|
kfree(buff);
|
|
return ret;
|
|
}
|
|
|
|
/* Do an i2c write operation on chain for HFI 0. */
|
|
static ssize_t i2c1_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __i2c_debugfs_write(file, buf, count, ppos, 0);
|
|
}
|
|
|
|
/* Do an i2c write operation on chain for HFI 1. */
|
|
static ssize_t i2c2_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __i2c_debugfs_write(file, buf, count, ppos, 1);
|
|
}
|
|
|
|
/* Do an i2c read operation on the chain for the given HFI. */
|
|
static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
char *buff;
|
|
int ret;
|
|
int i2c_addr;
|
|
int offset;
|
|
int total_read;
|
|
|
|
ppd = private2ppd(file);
|
|
|
|
/* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
|
|
i2c_addr = (*ppos >> 16) & 0xffff;
|
|
offset = *ppos & 0xffff;
|
|
|
|
/* explicitly reject invalid address 0 to catch cp and cat */
|
|
if (i2c_addr == 0)
|
|
return -EINVAL;
|
|
|
|
buff = kmalloc(count, GFP_KERNEL);
|
|
if (!buff)
|
|
return -ENOMEM;
|
|
|
|
total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count);
|
|
if (total_read < 0) {
|
|
ret = total_read;
|
|
goto _free;
|
|
}
|
|
|
|
*ppos += total_read;
|
|
|
|
ret = copy_to_user(buf, buff, total_read);
|
|
if (ret > 0) {
|
|
ret = -EFAULT;
|
|
goto _free;
|
|
}
|
|
|
|
ret = total_read;
|
|
|
|
_free:
|
|
kfree(buff);
|
|
return ret;
|
|
}
|
|
|
|
/* Do an i2c read operation on chain for HFI 0. */
|
|
static ssize_t i2c1_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __i2c_debugfs_read(file, buf, count, ppos, 0);
|
|
}
|
|
|
|
/* Do an i2c read operation on chain for HFI 1. */
|
|
static ssize_t i2c2_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __i2c_debugfs_read(file, buf, count, ppos, 1);
|
|
}
|
|
|
|
/* Do a QSFP write operation on the i2c chain for the given HFI. */
|
|
static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
char *buff;
|
|
int ret;
|
|
int total_written;
|
|
|
|
if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */
|
|
return -EINVAL;
|
|
|
|
ppd = private2ppd(file);
|
|
|
|
buff = memdup_user(buf, count);
|
|
if (IS_ERR(buff))
|
|
return PTR_ERR(buff);
|
|
|
|
total_written = qsfp_write(ppd, target, *ppos, buff, count);
|
|
if (total_written < 0) {
|
|
ret = total_written;
|
|
goto _free;
|
|
}
|
|
|
|
*ppos += total_written;
|
|
|
|
ret = total_written;
|
|
|
|
_free:
|
|
kfree(buff);
|
|
return ret;
|
|
}
|
|
|
|
/* Do a QSFP write operation on i2c chain for HFI 0. */
|
|
static ssize_t qsfp1_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __qsfp_debugfs_write(file, buf, count, ppos, 0);
|
|
}
|
|
|
|
/* Do a QSFP write operation on i2c chain for HFI 1. */
|
|
static ssize_t qsfp2_debugfs_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __qsfp_debugfs_write(file, buf, count, ppos, 1);
|
|
}
|
|
|
|
/* Do a QSFP read operation on the i2c chain for the given HFI. */
|
|
static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
char *buff;
|
|
int ret;
|
|
int total_read;
|
|
|
|
if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */
|
|
ret = -EINVAL;
|
|
goto _return;
|
|
}
|
|
|
|
ppd = private2ppd(file);
|
|
|
|
buff = kmalloc(count, GFP_KERNEL);
|
|
if (!buff) {
|
|
ret = -ENOMEM;
|
|
goto _return;
|
|
}
|
|
|
|
total_read = qsfp_read(ppd, target, *ppos, buff, count);
|
|
if (total_read < 0) {
|
|
ret = total_read;
|
|
goto _free;
|
|
}
|
|
|
|
*ppos += total_read;
|
|
|
|
ret = copy_to_user(buf, buff, total_read);
|
|
if (ret > 0) {
|
|
ret = -EFAULT;
|
|
goto _free;
|
|
}
|
|
|
|
ret = total_read;
|
|
|
|
_free:
|
|
kfree(buff);
|
|
_return:
|
|
return ret;
|
|
}
|
|
|
|
/* Do a QSFP read operation on i2c chain for HFI 0. */
|
|
static ssize_t qsfp1_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __qsfp_debugfs_read(file, buf, count, ppos, 0);
|
|
}
|
|
|
|
/* Do a QSFP read operation on i2c chain for HFI 1. */
|
|
static ssize_t qsfp2_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return __qsfp_debugfs_read(file, buf, count, ppos, 1);
|
|
}
|
|
|
|
static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
|
|
ppd = private2ppd(fp);
|
|
|
|
return acquire_chip_resource(ppd->dd, i2c_target(target), 0);
|
|
}
|
|
|
|
static int i2c1_debugfs_open(struct inode *in, struct file *fp)
|
|
{
|
|
return __i2c_debugfs_open(in, fp, 0);
|
|
}
|
|
|
|
static int i2c2_debugfs_open(struct inode *in, struct file *fp)
|
|
{
|
|
return __i2c_debugfs_open(in, fp, 1);
|
|
}
|
|
|
|
static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
|
|
ppd = private2ppd(fp);
|
|
|
|
release_chip_resource(ppd->dd, i2c_target(target));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i2c1_debugfs_release(struct inode *in, struct file *fp)
|
|
{
|
|
return __i2c_debugfs_release(in, fp, 0);
|
|
}
|
|
|
|
static int i2c2_debugfs_release(struct inode *in, struct file *fp)
|
|
{
|
|
return __i2c_debugfs_release(in, fp, 1);
|
|
}
|
|
|
|
static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
|
|
ppd = private2ppd(fp);
|
|
|
|
return acquire_chip_resource(ppd->dd, i2c_target(target), 0);
|
|
}
|
|
|
|
static int qsfp1_debugfs_open(struct inode *in, struct file *fp)
|
|
{
|
|
return __qsfp_debugfs_open(in, fp, 0);
|
|
}
|
|
|
|
static int qsfp2_debugfs_open(struct inode *in, struct file *fp)
|
|
{
|
|
return __qsfp_debugfs_open(in, fp, 1);
|
|
}
|
|
|
|
static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target)
|
|
{
|
|
struct hfi1_pportdata *ppd;
|
|
|
|
ppd = private2ppd(fp);
|
|
|
|
release_chip_resource(ppd->dd, i2c_target(target));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qsfp1_debugfs_release(struct inode *in, struct file *fp)
|
|
{
|
|
return __qsfp_debugfs_release(in, fp, 0);
|
|
}
|
|
|
|
static int qsfp2_debugfs_release(struct inode *in, struct file *fp)
|
|
{
|
|
return __qsfp_debugfs_release(in, fp, 1);
|
|
}
|
|
|
|
#define EXPROM_WRITE_ENABLE BIT_ULL(14)
|
|
|
|
static bool exprom_wp_disabled;
|
|
|
|
static int exprom_wp_set(struct hfi1_devdata *dd, bool disable)
|
|
{
|
|
u64 gpio_val = 0;
|
|
|
|
if (disable) {
|
|
gpio_val = EXPROM_WRITE_ENABLE;
|
|
exprom_wp_disabled = true;
|
|
dd_dev_info(dd, "Disable Expansion ROM Write Protection\n");
|
|
} else {
|
|
exprom_wp_disabled = false;
|
|
dd_dev_info(dd, "Enable Expansion ROM Write Protection\n");
|
|
}
|
|
|
|
write_csr(dd, ASIC_GPIO_OUT, gpio_val);
|
|
write_csr(dd, ASIC_GPIO_OE, gpio_val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t exprom_wp_debugfs_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t exprom_wp_debugfs_write(struct file *file,
|
|
const char __user *buf, size_t count,
|
|
loff_t *ppos)
|
|
{
|
|
struct hfi1_pportdata *ppd = private2ppd(file);
|
|
char cdata;
|
|
|
|
if (count != 1)
|
|
return -EINVAL;
|
|
if (get_user(cdata, buf))
|
|
return -EFAULT;
|
|
if (cdata == '0')
|
|
exprom_wp_set(ppd->dd, false);
|
|
else if (cdata == '1')
|
|
exprom_wp_set(ppd->dd, true);
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static unsigned long exprom_in_use;
|
|
|
|
static int exprom_wp_debugfs_open(struct inode *in, struct file *fp)
|
|
{
|
|
if (test_and_set_bit(0, &exprom_in_use))
|
|
return -EBUSY;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exprom_wp_debugfs_release(struct inode *in, struct file *fp)
|
|
{
|
|
struct hfi1_pportdata *ppd = private2ppd(fp);
|
|
|
|
if (exprom_wp_disabled)
|
|
exprom_wp_set(ppd->dd, false);
|
|
clear_bit(0, &exprom_in_use);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define DEBUGFS_OPS(nm, readroutine, writeroutine) \
|
|
{ \
|
|
.name = nm, \
|
|
.ops = { \
|
|
.owner = THIS_MODULE, \
|
|
.read = readroutine, \
|
|
.write = writeroutine, \
|
|
.llseek = generic_file_llseek, \
|
|
}, \
|
|
}
|
|
|
|
#define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \
|
|
{ \
|
|
.name = nm, \
|
|
.ops = { \
|
|
.owner = THIS_MODULE, \
|
|
.read = readf, \
|
|
.write = writef, \
|
|
.llseek = generic_file_llseek, \
|
|
.open = openf, \
|
|
.release = releasef \
|
|
}, \
|
|
}
|
|
|
|
static const struct counter_info cntr_ops[] = {
|
|
DEBUGFS_OPS("counter_names", dev_names_read, NULL),
|
|
DEBUGFS_OPS("counters", dev_counters_read, NULL),
|
|
DEBUGFS_OPS("portcounter_names", portnames_read, NULL),
|
|
};
|
|
|
|
static const struct counter_info port_cntr_ops[] = {
|
|
DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL),
|
|
DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write,
|
|
i2c1_debugfs_open, i2c1_debugfs_release),
|
|
DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write,
|
|
i2c2_debugfs_open, i2c2_debugfs_release),
|
|
DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL),
|
|
DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write,
|
|
qsfp1_debugfs_open, qsfp1_debugfs_release),
|
|
DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write,
|
|
qsfp2_debugfs_open, qsfp2_debugfs_release),
|
|
DEBUGFS_XOPS("exprom_wp", exprom_wp_debugfs_read,
|
|
exprom_wp_debugfs_write, exprom_wp_debugfs_open,
|
|
exprom_wp_debugfs_release),
|
|
DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write),
|
|
DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL),
|
|
DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write),
|
|
};
|
|
|
|
static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
if (*pos >= num_online_cpus())
|
|
return NULL;
|
|
|
|
return pos;
|
|
}
|
|
|
|
static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
++*pos;
|
|
if (*pos >= num_online_cpus())
|
|
return NULL;
|
|
|
|
return pos;
|
|
}
|
|
|
|
static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v)
|
|
{
|
|
/* nothing allocated */
|
|
}
|
|
|
|
static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
|
|
struct hfi1_devdata *dd = dd_from_dev(ibd);
|
|
loff_t *spos = v;
|
|
loff_t i = *spos;
|
|
|
|
sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i);
|
|
return 0;
|
|
}
|
|
|
|
DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
|
|
DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
|
|
DEBUGFS_FILE_OPS(sdma_cpu_list);
|
|
|
|
void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
|
|
{
|
|
char name[sizeof("port0counters") + 1];
|
|
char link[10];
|
|
struct hfi1_devdata *dd = dd_from_dev(ibd);
|
|
struct hfi1_pportdata *ppd;
|
|
struct dentry *root;
|
|
int unit = dd->unit;
|
|
int i, j;
|
|
|
|
if (!hfi1_dbg_root)
|
|
return;
|
|
snprintf(name, sizeof(name), "%s_%d", class_name(), unit);
|
|
snprintf(link, sizeof(link), "%d", unit);
|
|
root = debugfs_create_dir(name, hfi1_dbg_root);
|
|
ibd->hfi1_ibdev_dbg = root;
|
|
|
|
ibd->hfi1_ibdev_link =
|
|
debugfs_create_symlink(link, hfi1_dbg_root, name);
|
|
|
|
debugfs_create_file("opcode_stats", 0444, root, ibd,
|
|
&_opcode_stats_file_ops);
|
|
debugfs_create_file("tx_opcode_stats", 0444, root, ibd,
|
|
&_tx_opcode_stats_file_ops);
|
|
debugfs_create_file("ctx_stats", 0444, root, ibd, &_ctx_stats_file_ops);
|
|
debugfs_create_file("qp_stats", 0444, root, ibd, &_qp_stats_file_ops);
|
|
debugfs_create_file("sdes", 0444, root, ibd, &_sdes_file_ops);
|
|
debugfs_create_file("rcds", 0444, root, ibd, &_rcds_file_ops);
|
|
debugfs_create_file("pios", 0444, root, ibd, &_pios_file_ops);
|
|
debugfs_create_file("sdma_cpu_list", 0444, root, ibd,
|
|
&_sdma_cpu_list_file_ops);
|
|
|
|
/* dev counter files */
|
|
for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
|
|
debugfs_create_file(cntr_ops[i].name, 0444, root, dd,
|
|
&cntr_ops[i].ops);
|
|
|
|
/* per port files */
|
|
for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++)
|
|
for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) {
|
|
snprintf(name,
|
|
sizeof(name),
|
|
port_cntr_ops[i].name,
|
|
j + 1);
|
|
debugfs_create_file(name,
|
|
!port_cntr_ops[i].ops.write ?
|
|
S_IRUGO :
|
|
S_IRUGO | S_IWUSR,
|
|
root, ppd, &port_cntr_ops[i].ops);
|
|
}
|
|
|
|
hfi1_fault_init_debugfs(ibd);
|
|
}
|
|
|
|
void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
|
|
{
|
|
if (!hfi1_dbg_root)
|
|
goto out;
|
|
hfi1_fault_exit_debugfs(ibd);
|
|
debugfs_remove(ibd->hfi1_ibdev_link);
|
|
debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
|
|
out:
|
|
ibd->hfi1_ibdev_dbg = NULL;
|
|
}
|
|
|
|
/*
|
|
* driver stats field names, one line per stat, single string. Used by
|
|
* programs like hfistats to print the stats in a way which works for
|
|
* different versions of drivers, without changing program source.
|
|
* if hfi1_ib_stats changes, this needs to change. Names need to be
|
|
* 12 chars or less (w/o newline), for proper display by hfistats utility.
|
|
*/
|
|
static const char * const hfi1_statnames[] = {
|
|
/* must be element 0*/
|
|
"KernIntr",
|
|
"ErrorIntr",
|
|
"Tx_Errs",
|
|
"Rcv_Errs",
|
|
"H/W_Errs",
|
|
"NoPIOBufs",
|
|
"CtxtsOpen",
|
|
"RcvLen_Errs",
|
|
"EgrBufFull",
|
|
"EgrHdrFull"
|
|
};
|
|
|
|
static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
if (*pos >= ARRAY_SIZE(hfi1_statnames))
|
|
return NULL;
|
|
return pos;
|
|
}
|
|
|
|
static void *_driver_stats_names_seq_next(
|
|
struct seq_file *s,
|
|
void *v,
|
|
loff_t *pos)
|
|
{
|
|
++*pos;
|
|
if (*pos >= ARRAY_SIZE(hfi1_statnames))
|
|
return NULL;
|
|
return pos;
|
|
}
|
|
|
|
static void _driver_stats_names_seq_stop(struct seq_file *s, void *v)
|
|
{
|
|
}
|
|
|
|
static int _driver_stats_names_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
loff_t *spos = v;
|
|
|
|
seq_printf(s, "%s\n", hfi1_statnames[*spos]);
|
|
return 0;
|
|
}
|
|
|
|
DEBUGFS_SEQ_FILE_OPS(driver_stats_names);
|
|
DEBUGFS_SEQ_FILE_OPEN(driver_stats_names)
|
|
DEBUGFS_FILE_OPS(driver_stats_names);
|
|
|
|
static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
if (*pos >= ARRAY_SIZE(hfi1_statnames))
|
|
return NULL;
|
|
return pos;
|
|
}
|
|
|
|
static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
++*pos;
|
|
if (*pos >= ARRAY_SIZE(hfi1_statnames))
|
|
return NULL;
|
|
return pos;
|
|
}
|
|
|
|
static void _driver_stats_seq_stop(struct seq_file *s, void *v)
|
|
{
|
|
}
|
|
|
|
static void hfi1_sps_show_ints(struct seq_file *s)
|
|
{
|
|
unsigned long index, flags;
|
|
struct hfi1_devdata *dd;
|
|
u64 sps_ints = 0;
|
|
|
|
xa_lock_irqsave(&hfi1_dev_table, flags);
|
|
xa_for_each(&hfi1_dev_table, index, dd) {
|
|
sps_ints += get_all_cpu_total(dd->int_counter);
|
|
}
|
|
xa_unlock_irqrestore(&hfi1_dev_table, flags);
|
|
seq_write(s, &sps_ints, sizeof(u64));
|
|
}
|
|
|
|
static int _driver_stats_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
loff_t *spos = v;
|
|
u64 *stats = (u64 *)&hfi1_stats;
|
|
|
|
/* special case for interrupts */
|
|
if (*spos == 0)
|
|
hfi1_sps_show_ints(s);
|
|
else
|
|
seq_write(s, stats + *spos, sizeof(u64));
|
|
return 0;
|
|
}
|
|
|
|
DEBUGFS_SEQ_FILE_OPS(driver_stats);
|
|
DEBUGFS_SEQ_FILE_OPEN(driver_stats)
|
|
DEBUGFS_FILE_OPS(driver_stats);
|
|
|
|
void hfi1_dbg_init(void)
|
|
{
|
|
hfi1_dbg_root = debugfs_create_dir(DRIVER_NAME, NULL);
|
|
debugfs_create_file("driver_stats_names", 0444, hfi1_dbg_root, NULL,
|
|
&_driver_stats_names_file_ops);
|
|
debugfs_create_file("driver_stats", 0444, hfi1_dbg_root, NULL,
|
|
&_driver_stats_file_ops);
|
|
}
|
|
|
|
void hfi1_dbg_exit(void)
|
|
{
|
|
debugfs_remove_recursive(hfi1_dbg_root);
|
|
hfi1_dbg_root = NULL;
|
|
}
|