diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/debugfs.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/debugfs.c | 1145 |
1 files changed, 0 insertions, 1145 deletions
diff --git a/drivers/staging/rdma/hfi1/debugfs.c b/drivers/staging/rdma/hfi1/debugfs.c deleted file mode 100644 index dbab9d9cc288..000000000000 --- a/drivers/staging/rdma/hfi1/debugfs.c +++ /dev/null @@ -1,1145 +0,0 @@ -#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 |