+++ /dev/null
-#ifdef CONFIG_DEBUG_FS
-/*
- * Copyright(c) 2015, 2016 Intel Corporation.
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * BSD LICENSE
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * - Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/module.h>
-
-#include "hfi.h"
-#include "debugfs.h"
-#include "device.h"
-#include "qp.h"
-#include "sdma.h"
-
-static struct dentry *hfi1_dbg_root;
-
-#define private2dd(file) (file_inode(file)->i_private)
-#define private2ppd(file) (file_inode(file)->i_private)
-
-#define DEBUGFS_SEQ_FILE_OPS(name) \
-static const struct seq_operations _##name##_seq_ops = { \
- .start = _##name##_seq_start, \
- .next = _##name##_seq_next, \
- .stop = _##name##_seq_stop, \
- .show = _##name##_seq_show \
-}
-
-#define DEBUGFS_SEQ_FILE_OPEN(name) \
-static int _##name##_open(struct inode *inode, struct file *s) \
-{ \
- struct seq_file *seq; \
- int ret; \
- ret = seq_open(s, &_##name##_seq_ops); \
- if (ret) \
- return ret; \
- seq = s->private_data; \
- seq->private = inode->i_private; \
- return 0; \
-}
-
-#define DEBUGFS_FILE_OPS(name) \
-static const struct file_operations _##name##_file_ops = { \
- .owner = THIS_MODULE, \
- .open = _##name##_open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = seq_release \
-}
-
-#define DEBUGFS_FILE_CREATE(name, parent, data, ops, mode) \
-do { \
- struct dentry *ent; \
- ent = debugfs_create_file(name, mode, parent, \
- data, ops); \
- if (!ent) \
- pr_warn("create of %s failed\n", name); \
-} while (0)
-
-#define DEBUGFS_SEQ_FILE_CREATE(name, parent, data) \
- DEBUGFS_FILE_CREATE(#name, parent, data, &_##name##_file_ops, S_IRUGO)
-
-static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
-__acquires(RCU)
-{
- struct hfi1_opcode_stats_perctx *opstats;
-
- rcu_read_lock();
- if (*pos >= ARRAY_SIZE(opstats->stats))
- return NULL;
- return pos;
-}
-
-static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
-{
- struct hfi1_opcode_stats_perctx *opstats;
-
- ++*pos;
- if (*pos >= ARRAY_SIZE(opstats->stats))
- return NULL;
- return pos;
-}
-
-static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
-__releases(RCU)
-{
- rcu_read_unlock();
-}
-
-static int _opcode_stats_seq_show(struct seq_file *s, void *v)
-{
- loff_t *spos = v;
- loff_t i = *spos, j;
- u64 n_packets = 0, n_bytes = 0;
- struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
- struct hfi1_devdata *dd = dd_from_dev(ibd);
-
- for (j = 0; j < dd->first_user_ctxt; j++) {
- if (!dd->rcd[j])
- continue;
- n_packets += dd->rcd[j]->opstats->stats[i].n_packets;
- n_bytes += dd->rcd[j]->opstats->stats[i].n_bytes;
- }
- if (!n_packets && !n_bytes)
- return SEQ_SKIP;
- seq_printf(s, "%02llx %llu/%llu\n", i,
- (unsigned long long)n_packets,
- (unsigned long long)n_bytes);
-
- return 0;
-}
-
-DEBUGFS_SEQ_FILE_OPS(opcode_stats);
-DEBUGFS_SEQ_FILE_OPEN(opcode_stats)
-DEBUGFS_FILE_OPS(opcode_stats);
-
-static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
-{
- struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
- struct hfi1_devdata *dd = dd_from_dev(ibd);
-
- if (!*pos)
- return SEQ_START_TOKEN;
- if (*pos >= dd->first_user_ctxt)
- return NULL;
- return pos;
-}
-
-static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
-{
- struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
- struct hfi1_devdata *dd = dd_from_dev(ibd);
-
- if (v == SEQ_START_TOKEN)
- return pos;
-
- ++*pos;
- if (*pos >= dd->first_user_ctxt)
- return NULL;
- return pos;
-}
-
-static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
-{
- /* nothing allocated */
-}
-
-static int _ctx_stats_seq_show(struct seq_file *s, void *v)
-{
- loff_t *spos;
- loff_t i, j;
- u64 n_packets = 0;
- struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
- struct hfi1_devdata *dd = dd_from_dev(ibd);
-
- if (v == SEQ_START_TOKEN) {
- seq_puts(s, "Ctx:npkts\n");
- return 0;
- }
-
- spos = v;
- i = *spos;
-
- if (!dd->rcd[i])
- return SEQ_SKIP;
-
- for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
- n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
-
- if (!n_packets)
- return SEQ_SKIP;
-
- seq_printf(s, " %llu:%llu\n", i, n_packets);
- return 0;
-}
-
-DEBUGFS_SEQ_FILE_OPS(ctx_stats);
-DEBUGFS_SEQ_FILE_OPEN(ctx_stats)
-DEBUGFS_FILE_OPS(ctx_stats);
-
-static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
-__acquires(RCU)
-{
- struct qp_iter *iter;
- loff_t n = *pos;
-
- rcu_read_lock();
- iter = qp_iter_init(s->private);
- if (!iter)
- return NULL;
-
- while (n--) {
- if (qp_iter_next(iter)) {
- kfree(iter);
- return NULL;
- }
- }
-
- return iter;
-}
-
-static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
- loff_t *pos)
-{
- struct qp_iter *iter = iter_ptr;
-
- (*pos)++;
-
- if (qp_iter_next(iter)) {
- kfree(iter);
- return NULL;
- }
-
- return iter;
-}
-
-static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
-__releases(RCU)
-{
- rcu_read_unlock();
-}
-
-static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
-{
- struct qp_iter *iter = iter_ptr;
-
- if (!iter)
- return 0;
-
- qp_iter_print(s, iter);
-
- return 0;
-}
-
-DEBUGFS_SEQ_FILE_OPS(qp_stats);
-DEBUGFS_SEQ_FILE_OPEN(qp_stats)
-DEBUGFS_FILE_OPS(qp_stats);
-
-static void *_sdes_seq_start(struct seq_file *s, loff_t *pos)
-__acquires(RCU)
-{
- struct hfi1_ibdev *ibd;
- struct hfi1_devdata *dd;
-
- rcu_read_lock();
- ibd = (struct hfi1_ibdev *)s->private;
- dd = dd_from_dev(ibd);
- if (!dd->per_sdma || *pos >= dd->num_sdma)
- return NULL;
- return pos;
-}
-
-static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos)
-{
- struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
- struct hfi1_devdata *dd = dd_from_dev(ibd);
-
- ++*pos;
- if (!dd->per_sdma || *pos >= dd->num_sdma)
- return NULL;
- return pos;
-}
-
-static void _sdes_seq_stop(struct seq_file *s, void *v)
-__releases(RCU)
-{
- rcu_read_unlock();
-}
-
-static int _sdes_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_sde(s, &dd->per_sdma[i]);
- return 0;
-}
-
-DEBUGFS_SEQ_FILE_OPS(sdes);
-DEBUGFS_SEQ_FILE_OPEN(sdes)
-DEBUGFS_FILE_OPS(sdes);
-
-/* read the per-device counters */
-static ssize_t dev_counters_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- u64 *counters;
- size_t avail;
- struct hfi1_devdata *dd;
- ssize_t rval;
-
- rcu_read_lock();
- dd = private2dd(file);
- avail = hfi1_read_cntrs(dd, NULL, &counters);
- rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
- rcu_read_unlock();
- return rval;
-}
-
-/* read the per-device counters */
-static ssize_t dev_names_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- char *names;
- size_t avail;
- struct hfi1_devdata *dd;
- ssize_t rval;
-
- rcu_read_lock();
- dd = private2dd(file);
- avail = hfi1_read_cntrs(dd, &names, NULL);
- rval = simple_read_from_buffer(buf, count, ppos, names, avail);
- rcu_read_unlock();
- return rval;
-}
-
-struct counter_info {
- char *name;
- const struct file_operations ops;
-};
-
-/*
- * Could use file_inode(file)->i_ino to figure out which file,
- * instead of separate routine for each, but for now, this works...
- */
-
-/* read the per-port names (same for each port) */
-static ssize_t portnames_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- char *names;
- size_t avail;
- struct hfi1_devdata *dd;
- ssize_t rval;
-
- rcu_read_lock();
- dd = private2dd(file);
- avail = hfi1_read_portcntrs(dd->pport, &names, NULL);
- rval = simple_read_from_buffer(buf, count, ppos, names, avail);
- rcu_read_unlock();
- return rval;
-}
-
-/* read the per-port counters */
-static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- u64 *counters;
- size_t avail;
- struct hfi1_pportdata *ppd;
- ssize_t rval;
-
- rcu_read_lock();
- ppd = private2ppd(file);
- avail = hfi1_read_portcntrs(ppd, NULL, &counters);
- rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
- rcu_read_unlock();
- return rval;
-}
-
-static void check_dyn_flag(u64 scratch0, char *p, int size, int *used,
- int this_hfi, int hfi, u32 flag, const char *what)
-{
- u32 mask;
-
- mask = flag << (hfi ? CR_DYN_SHIFT : 0);
- if (scratch0 & mask) {
- *used += scnprintf(p + *used, size - *used,
- " 0x%08x - HFI%d %s in use, %s device\n",
- mask, hfi, what,
- this_hfi == hfi ? "this" : "other");
- }
-}
-
-static ssize_t asic_flags_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct hfi1_pportdata *ppd;
- struct hfi1_devdata *dd;
- u64 scratch0;
- char *tmp;
- int ret = 0;
- int size;
- int used;
- int i;
-
- rcu_read_lock();
- ppd = private2ppd(file);
- dd = ppd->dd;
- size = PAGE_SIZE;
- used = 0;
- tmp = kmalloc(size, GFP_KERNEL);
- if (!tmp) {
- rcu_read_unlock();
- 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);
- rcu_read_unlock();
- 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;
-
- rcu_read_lock();
- ppd = private2ppd(file);
- dd = ppd->dd;
-
- buff = kmalloc(count + 1, GFP_KERNEL);
- if (!buff) {
- ret = -ENOMEM;
- goto do_return;
- }
-
- ret = copy_from_user(buff, buf, count);
- if (ret > 0) {
- ret = -EFAULT;
- goto do_free;
- }
-
- /* zero terminate and read the expected integer */
- buff[count] = 0;
- 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);
- do_return:
- rcu_read_unlock();
- return ret;
-}
-
-/*
- * 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;
-
- rcu_read_lock();
- ppd = private2ppd(file);
- tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
- if (!tmp) {
- rcu_read_unlock();
- return -ENOMEM;
- }
-
- ret = qsfp_dump(ppd, tmp, PAGE_SIZE);
- if (ret > 0)
- ret = simple_read_from_buffer(buf, count, ppos, tmp, ret);
- rcu_read_unlock();
- 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;
-
- rcu_read_lock();
- 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) {
- ret = -EINVAL;
- goto _return;
- }
-
- buff = kmalloc(count, GFP_KERNEL);
- if (!buff) {
- ret = -ENOMEM;
- goto _return;
- }
-
- ret = copy_from_user(buff, buf, count);
- if (ret > 0) {
- ret = -EFAULT;
- goto _free;
- }
-
- 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:
- rcu_read_unlock();
- 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;
-
- rcu_read_lock();
- 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) {
- ret = -EINVAL;
- goto _return;
- }
-
- buff = kmalloc(count, GFP_KERNEL);
- if (!buff) {
- ret = -ENOMEM;
- goto _return;
- }
-
- 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:
- rcu_read_unlock();
- 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;
-
- rcu_read_lock();
- 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;
- }
-
- ret = copy_from_user(buff, buf, count);
- if (ret > 0) {
- ret = -EFAULT;
- goto _free;
- }
-
- 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:
- rcu_read_unlock();
- 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;
-
- rcu_read_lock();
- 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:
- rcu_read_unlock();
- 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;
- int ret;
-
- if (!try_module_get(THIS_MODULE))
- return -ENODEV;
-
- ppd = private2ppd(fp);
-
- ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
- if (ret) /* failed - release the module */
- module_put(THIS_MODULE);
-
- return ret;
-}
-
-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));
- module_put(THIS_MODULE);
-
- 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;
- int ret;
-
- if (!try_module_get(THIS_MODULE))
- return -ENODEV;
-
- ppd = private2ppd(fp);
-
- ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
- if (ret) /* failed - release the module */
- module_put(THIS_MODULE);
-
- return ret;
-}
-
-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));
- module_put(THIS_MODULE);
-
- 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 DEBUGFS_OPS(nm, readroutine, writeroutine) \
-{ \
- .name = nm, \
- .ops = { \
- .read = readroutine, \
- .write = writeroutine, \
- .llseek = generic_file_llseek, \
- }, \
-}
-
-#define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \
-{ \
- .name = nm, \
- .ops = { \
- .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_OPS("asic_flags", asic_flags_read, asic_flags_write),
-};
-
-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;
- 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);
- ibd->hfi1_ibdev_dbg = debugfs_create_dir(name, hfi1_dbg_root);
- if (!ibd->hfi1_ibdev_dbg) {
- pr_warn("create of %s failed\n", name);
- return;
- }
- ibd->hfi1_ibdev_link =
- debugfs_create_symlink(link, hfi1_dbg_root, name);
- if (!ibd->hfi1_ibdev_link) {
- pr_warn("create of %s symlink failed\n", name);
- return;
- }
- DEBUGFS_SEQ_FILE_CREATE(opcode_stats, ibd->hfi1_ibdev_dbg, ibd);
- DEBUGFS_SEQ_FILE_CREATE(ctx_stats, ibd->hfi1_ibdev_dbg, ibd);
- DEBUGFS_SEQ_FILE_CREATE(qp_stats, ibd->hfi1_ibdev_dbg, ibd);
- DEBUGFS_SEQ_FILE_CREATE(sdes, ibd->hfi1_ibdev_dbg, ibd);
- /* dev counter files */
- for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
- DEBUGFS_FILE_CREATE(cntr_ops[i].name,
- ibd->hfi1_ibdev_dbg,
- dd,
- &cntr_ops[i].ops, S_IRUGO);
- /* 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_FILE_CREATE(name,
- ibd->hfi1_ibdev_dbg,
- ppd,
- &port_cntr_ops[i].ops,
- !port_cntr_ops[i].ops.write ?
- S_IRUGO : S_IRUGO | S_IWUSR);
- }
-}
-
-void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
-{
- if (!hfi1_dbg_root)
- goto out;
- debugfs_remove(ibd->hfi1_ibdev_link);
- debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
-out:
- ibd->hfi1_ibdev_dbg = NULL;
- synchronize_rcu();
-}
-
-/*
- * 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)
-__acquires(RCU)
-{
- rcu_read_lock();
- 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)
-__releases(RCU)
-{
- rcu_read_unlock();
-}
-
-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)
-__acquires(RCU)
-{
- rcu_read_lock();
- 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)
-__releases(RCU)
-{
- rcu_read_unlock();
-}
-
-static u64 hfi1_sps_ints(void)
-{
- unsigned long flags;
- struct hfi1_devdata *dd;
- u64 sps_ints = 0;
-
- spin_lock_irqsave(&hfi1_devs_lock, flags);
- list_for_each_entry(dd, &hfi1_dev_list, list) {
- sps_ints += get_all_cpu_total(dd->int_counter);
- }
- spin_unlock_irqrestore(&hfi1_devs_lock, flags);
- return sps_ints;
-}
-
-static int _driver_stats_seq_show(struct seq_file *s, void *v)
-{
- loff_t *spos = v;
- char *buffer;
- u64 *stats = (u64 *)&hfi1_stats;
- size_t sz = seq_get_buf(s, &buffer);
-
- if (sz < sizeof(u64))
- return SEQ_SKIP;
- /* special case for interrupts */
- if (*spos == 0)
- *(u64 *)buffer = hfi1_sps_ints();
- else
- *(u64 *)buffer = stats[*spos];
- seq_commit(s, 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);
- if (!hfi1_dbg_root)
- pr_warn("init of debugfs failed\n");
- DEBUGFS_SEQ_FILE_CREATE(driver_stats_names, hfi1_dbg_root, NULL);
- DEBUGFS_SEQ_FILE_CREATE(driver_stats, hfi1_dbg_root, NULL);
-}
-
-void hfi1_dbg_exit(void)
-{
- debugfs_remove_recursive(hfi1_dbg_root);
- hfi1_dbg_root = NULL;
-}
-
-#endif
projects / cascardo / linux.git / blobdiff