| /* |
| * Atheros CARL9170 driver |
| * |
| * debug(fs) probing |
| * |
| * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, see |
| * http://www.gnu.org/licenses/. |
| * |
| * This file incorporates work covered by the following copyright and |
| * permission notice: |
| * Copyright (c) 2008-2009 Atheros Communications, Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/seq_file.h> |
| #include <linux/vmalloc.h> |
| #include "carl9170.h" |
| #include "cmd.h" |
| |
| #define ADD(buf, off, max, fmt, args...) \ |
| off += snprintf(&buf[off], max - off, fmt, ##args); |
| |
| |
| struct carl9170_debugfs_fops { |
| unsigned int read_bufsize; |
| umode_t attr; |
| char *(*read)(struct ar9170 *ar, char *buf, size_t bufsize, |
| ssize_t *len); |
| ssize_t (*write)(struct ar9170 *aru, const char *buf, size_t size); |
| const struct file_operations fops; |
| |
| enum carl9170_device_state req_dev_state; |
| }; |
| |
| static ssize_t carl9170_debugfs_read(struct file *file, char __user *userbuf, |
| size_t count, loff_t *ppos) |
| { |
| struct carl9170_debugfs_fops *dfops; |
| struct ar9170 *ar; |
| char *buf = NULL, *res_buf = NULL; |
| ssize_t ret = 0; |
| int err = 0; |
| |
| if (!count) |
| return 0; |
| |
| ar = file->private_data; |
| |
| if (!ar) |
| return -ENODEV; |
| dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops); |
| |
| if (!dfops->read) |
| return -ENOSYS; |
| |
| if (dfops->read_bufsize) { |
| buf = vmalloc(dfops->read_bufsize); |
| if (!buf) |
| return -ENOMEM; |
| } |
| |
| mutex_lock(&ar->mutex); |
| if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) { |
| err = -ENODEV; |
| res_buf = buf; |
| goto out_free; |
| } |
| |
| res_buf = dfops->read(ar, buf, dfops->read_bufsize, &ret); |
| |
| if (ret > 0) |
| err = simple_read_from_buffer(userbuf, count, ppos, |
| res_buf, ret); |
| else |
| err = ret; |
| |
| WARN_ON_ONCE(dfops->read_bufsize && (res_buf != buf)); |
| |
| out_free: |
| vfree(res_buf); |
| mutex_unlock(&ar->mutex); |
| return err; |
| } |
| |
| static ssize_t carl9170_debugfs_write(struct file *file, |
| const char __user *userbuf, size_t count, loff_t *ppos) |
| { |
| struct carl9170_debugfs_fops *dfops; |
| struct ar9170 *ar; |
| char *buf = NULL; |
| int err = 0; |
| |
| if (!count) |
| return 0; |
| |
| if (count > PAGE_SIZE) |
| return -E2BIG; |
| |
| ar = file->private_data; |
| |
| if (!ar) |
| return -ENODEV; |
| dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops); |
| |
| if (!dfops->write) |
| return -ENOSYS; |
| |
| buf = vmalloc(count); |
| if (!buf) |
| return -ENOMEM; |
| |
| if (copy_from_user(buf, userbuf, count)) { |
| err = -EFAULT; |
| goto out_free; |
| } |
| |
| if (mutex_trylock(&ar->mutex) == 0) { |
| err = -EAGAIN; |
| goto out_free; |
| } |
| |
| if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) { |
| err = -ENODEV; |
| goto out_unlock; |
| } |
| |
| err = dfops->write(ar, buf, count); |
| if (err) |
| goto out_unlock; |
| |
| out_unlock: |
| mutex_unlock(&ar->mutex); |
| |
| out_free: |
| vfree(buf); |
| return err; |
| } |
| |
| #define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \ |
| _attr, _dstate) \ |
| static const struct carl9170_debugfs_fops carl_debugfs_##name ##_ops = {\ |
| .read_bufsize = _read_bufsize, \ |
| .read = _read, \ |
| .write = _write, \ |
| .attr = _attr, \ |
| .req_dev_state = _dstate, \ |
| .fops = { \ |
| .open = simple_open, \ |
| .read = carl9170_debugfs_read, \ |
| .write = carl9170_debugfs_write, \ |
| .owner = THIS_MODULE \ |
| }, \ |
| } |
| |
| #define DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, _attr) \ |
| __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \ |
| _attr, CARL9170_STARTED) \ |
| |
| #define DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) \ |
| DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| NULL, _read_bufsize, S_IRUSR) |
| |
| #define DEBUGFS_DECLARE_WO_FILE(name) \ |
| DEBUGFS_DECLARE_FILE(name, NULL, carl9170_debugfs_##name ##_write,\ |
| 0, S_IWUSR) |
| |
| #define DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize) \ |
| DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| carl9170_debugfs_##name ##_write, \ |
| _read_bufsize, S_IRUSR | S_IWUSR) |
| |
| #define __DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize, _dstate) \ |
| __DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| carl9170_debugfs_##name ##_write, \ |
| _read_bufsize, S_IRUSR | S_IWUSR, _dstate) |
| |
| #define DEBUGFS_READONLY_FILE(name, _read_bufsize, fmt, value...) \ |
| static char *carl9170_debugfs_ ##name ## _read(struct ar9170 *ar, \ |
| char *buf, size_t buf_size,\ |
| ssize_t *len) \ |
| { \ |
| ADD(buf, *len, buf_size, fmt "\n", ##value); \ |
| return buf; \ |
| } \ |
| DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) |
| |
| static char *carl9170_debugfs_mem_usage_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| ADD(buf, *len, bufsize, "jar: ["); |
| |
| spin_lock_bh(&ar->mem_lock); |
| |
| *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| ar->mem_bitmap, ar->fw.mem_blocks); |
| |
| ADD(buf, *len, bufsize, "]\n"); |
| |
| ADD(buf, *len, bufsize, "cookies: used:%3d / total:%3d, allocs:%d\n", |
| bitmap_weight(ar->mem_bitmap, ar->fw.mem_blocks), |
| ar->fw.mem_blocks, atomic_read(&ar->mem_allocs)); |
| |
| ADD(buf, *len, bufsize, "memory: free:%3d (%3d KiB) / total:%3d KiB)\n", |
| atomic_read(&ar->mem_free_blocks), |
| (atomic_read(&ar->mem_free_blocks) * ar->fw.mem_block_size) / 1024, |
| (ar->fw.mem_blocks * ar->fw.mem_block_size) / 1024); |
| |
| spin_unlock_bh(&ar->mem_lock); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(mem_usage, 512); |
| |
| static char *carl9170_debugfs_qos_stat_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| ADD(buf, *len, bufsize, "%s QoS AC\n", modparam_noht ? "Hardware" : |
| "Software"); |
| |
| ADD(buf, *len, bufsize, "[ VO VI " |
| " BE BK ]\n"); |
| |
| spin_lock_bh(&ar->tx_stats_lock); |
| ADD(buf, *len, bufsize, "[length/limit length/limit " |
| "length/limit length/limit ]\n" |
| "[ %3d/%3d %3d/%3d " |
| " %3d/%3d %3d/%3d ]\n\n", |
| ar->tx_stats[0].len, ar->tx_stats[0].limit, |
| ar->tx_stats[1].len, ar->tx_stats[1].limit, |
| ar->tx_stats[2].len, ar->tx_stats[2].limit, |
| ar->tx_stats[3].len, ar->tx_stats[3].limit); |
| |
| ADD(buf, *len, bufsize, "[ total total " |
| " total total ]\n" |
| "[%10d %10d %10d %10d ]\n\n", |
| ar->tx_stats[0].count, ar->tx_stats[1].count, |
| ar->tx_stats[2].count, ar->tx_stats[3].count); |
| |
| spin_unlock_bh(&ar->tx_stats_lock); |
| |
| ADD(buf, *len, bufsize, "[ pend/waittx pend/waittx " |
| " pend/waittx pend/waittx]\n" |
| "[ %3d/%3d %3d/%3d " |
| " %3d/%3d %3d/%3d ]\n\n", |
| skb_queue_len(&ar->tx_pending[0]), |
| skb_queue_len(&ar->tx_status[0]), |
| skb_queue_len(&ar->tx_pending[1]), |
| skb_queue_len(&ar->tx_status[1]), |
| skb_queue_len(&ar->tx_pending[2]), |
| skb_queue_len(&ar->tx_status[2]), |
| skb_queue_len(&ar->tx_pending[3]), |
| skb_queue_len(&ar->tx_status[3])); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(qos_stat, 512); |
| |
| static void carl9170_debugfs_format_frame(struct ar9170 *ar, |
| struct sk_buff *skb, const char *prefix, char *buf, |
| ssize_t *off, ssize_t bufsize) |
| { |
| struct _carl9170_tx_superframe *txc = (void *) skb->data; |
| struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb); |
| struct carl9170_tx_info *arinfo = (void *) txinfo->rate_driver_data; |
| struct ieee80211_hdr *hdr = (void *) txc->frame_data; |
| |
| ADD(buf, *off, bufsize, "%s %p, c:%2x, DA:%pM, sq:%4d, mc:%.4x, " |
| "pc:%.8x, to:%d ms\n", prefix, skb, txc->s.cookie, |
| ieee80211_get_DA(hdr), get_seq_h(hdr), |
| le16_to_cpu(txc->f.mac_control), le32_to_cpu(txc->f.phy_control), |
| jiffies_to_msecs(jiffies - arinfo->timeout)); |
| } |
| |
| |
| static char *carl9170_debugfs_ampdu_state_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| struct carl9170_sta_tid *iter; |
| struct sk_buff *skb; |
| int cnt = 0, fc; |
| int offset; |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(iter, &ar->tx_ampdu_list, list) { |
| |
| spin_lock_bh(&iter->lock); |
| ADD(buf, *len, bufsize, "Entry: #%2d TID:%1d, BSN:%4d, " |
| "SNX:%4d, HSN:%4d, BAW:%2d, state:%1d, toggles:%d\n", |
| cnt, iter->tid, iter->bsn, iter->snx, iter->hsn, |
| iter->max, iter->state, iter->counter); |
| |
| ADD(buf, *len, bufsize, "\tWindow: ["); |
| |
| *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| iter->bitmap, CARL9170_BAW_BITS); |
| |
| #define BM_STR_OFF(offset) \ |
| ((CARL9170_BAW_BITS - (offset) - 1) / 4 + \ |
| (CARL9170_BAW_BITS - (offset) - 1) / 32 + 1) |
| |
| ADD(buf, *len, bufsize, ",W]\n"); |
| |
| offset = BM_STR_OFF(0); |
| ADD(buf, *len, bufsize, "\tBase Seq: %*s\n", offset, "T"); |
| |
| offset = BM_STR_OFF(SEQ_DIFF(iter->snx, iter->bsn)); |
| ADD(buf, *len, bufsize, "\tNext Seq: %*s\n", offset, "W"); |
| |
| offset = BM_STR_OFF(((int)iter->hsn - (int)iter->bsn) % |
| CARL9170_BAW_BITS); |
| ADD(buf, *len, bufsize, "\tLast Seq: %*s\n", offset, "N"); |
| |
| ADD(buf, *len, bufsize, "\tPre-Aggregation reorder buffer: " |
| " currently queued:%d\n", skb_queue_len(&iter->queue)); |
| |
| fc = 0; |
| skb_queue_walk(&iter->queue, skb) { |
| char prefix[32]; |
| |
| snprintf(prefix, sizeof(prefix), "\t\t%3d :", fc); |
| carl9170_debugfs_format_frame(ar, skb, prefix, buf, |
| len, bufsize); |
| |
| fc++; |
| } |
| spin_unlock_bh(&iter->lock); |
| cnt++; |
| } |
| rcu_read_unlock(); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000); |
| |
| static void carl9170_debugfs_queue_dump(struct ar9170 *ar, char *buf, |
| ssize_t *len, size_t bufsize, struct sk_buff_head *queue) |
| { |
| struct sk_buff *skb; |
| char prefix[16]; |
| int fc = 0; |
| |
| spin_lock_bh(&queue->lock); |
| skb_queue_walk(queue, skb) { |
| snprintf(prefix, sizeof(prefix), "%3d :", fc); |
| carl9170_debugfs_format_frame(ar, skb, prefix, buf, |
| len, bufsize); |
| fc++; |
| } |
| spin_unlock_bh(&queue->lock); |
| } |
| |
| #define DEBUGFS_QUEUE_DUMP(q, qi) \ |
| static char *carl9170_debugfs_##q ##_##qi ##_read(struct ar9170 *ar, \ |
| char *buf, size_t bufsize, ssize_t *len) \ |
| { \ |
| carl9170_debugfs_queue_dump(ar, buf, len, bufsize, &ar->q[qi]); \ |
| return buf; \ |
| } \ |
| DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000); |
| |
| static char *carl9170_debugfs_sta_psm_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| ADD(buf, *len, bufsize, "psm state: %s\n", (ar->ps.off_override ? |
| "FORCE CAM" : (ar->ps.state ? "PSM" : "CAM"))); |
| |
| ADD(buf, *len, bufsize, "sleep duration: %d ms.\n", ar->ps.sleep_ms); |
| ADD(buf, *len, bufsize, "last power-state transition: %d ms ago.\n", |
| jiffies_to_msecs(jiffies - ar->ps.last_action)); |
| ADD(buf, *len, bufsize, "last CAM->PSM transition: %d ms ago.\n", |
| jiffies_to_msecs(jiffies - ar->ps.last_slept)); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(sta_psm, 160); |
| |
| static char *carl9170_debugfs_tx_stuck_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| int i; |
| |
| for (i = 0; i < ar->hw->queues; i++) { |
| ADD(buf, *len, bufsize, "TX queue [%d]: %10d max:%10d ms.\n", |
| i, ieee80211_queue_stopped(ar->hw, i) ? |
| jiffies_to_msecs(jiffies - ar->queue_stop_timeout[i]) : 0, |
| jiffies_to_msecs(ar->max_queue_stop_timeout[i])); |
| |
| ar->max_queue_stop_timeout[i] = 0; |
| } |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180); |
| |
| static char *carl9170_debugfs_phy_noise_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| int err; |
| |
| err = carl9170_get_noisefloor(ar); |
| if (err) { |
| *len = err; |
| return buf; |
| } |
| |
| ADD(buf, *len, bufsize, "Chain 0: %10d dBm, ext. chan.:%10d dBm\n", |
| ar->noise[0], ar->noise[2]); |
| ADD(buf, *len, bufsize, "Chain 2: %10d dBm, ext. chan.:%10d dBm\n", |
| ar->noise[1], ar->noise[3]); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(phy_noise, 180); |
| |
| static char *carl9170_debugfs_vif_dump_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *len) |
| { |
| struct carl9170_vif_info *iter; |
| int i = 0; |
| |
| ADD(buf, *len, bufsize, "registered VIFs:%d \\ %d\n", |
| ar->vifs, ar->fw.vif_num); |
| |
| ADD(buf, *len, bufsize, "VIF bitmap: ["); |
| |
| *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| &ar->vif_bitmap, ar->fw.vif_num); |
| |
| ADD(buf, *len, bufsize, "]\n"); |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(iter, &ar->vif_list, list) { |
| struct ieee80211_vif *vif = carl9170_get_vif(iter); |
| ADD(buf, *len, bufsize, "\t%d = [%s VIF, id:%d, type:%x " |
| " mac:%pM %s]\n", i, (carl9170_get_main_vif(ar) == vif ? |
| "Master" : " Slave"), iter->id, vif->type, vif->addr, |
| iter->enable_beacon ? "beaconing " : ""); |
| i++; |
| } |
| rcu_read_unlock(); |
| |
| return buf; |
| } |
| DEBUGFS_DECLARE_RO_FILE(vif_dump, 8000); |
| |
| #define UPDATE_COUNTER(ar, name) ({ \ |
| u32 __tmp[ARRAY_SIZE(name##_regs)]; \ |
| unsigned int __i, __err = -ENODEV; \ |
| \ |
| for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \ |
| __tmp[__i] = name##_regs[__i].reg; \ |
| ar->debug.stats.name##_counter[__i] = 0; \ |
| } \ |
| \ |
| if (IS_STARTED(ar)) \ |
| __err = carl9170_read_mreg(ar, ARRAY_SIZE(name##_regs), \ |
| __tmp, ar->debug.stats.name##_counter); \ |
| (__err); }) |
| |
| #define TALLY_SUM_UP(ar, name) do { \ |
| unsigned int __i; \ |
| \ |
| for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \ |
| ar->debug.stats.name##_sum[__i] += \ |
| ar->debug.stats.name##_counter[__i]; \ |
| } \ |
| } while (0) |
| |
| #define DEBUGFS_HW_TALLY_FILE(name, f) \ |
| static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \ |
| char *dum, size_t bufsize, ssize_t *ret) \ |
| { \ |
| char *buf; \ |
| int i, max_len, err; \ |
| \ |
| max_len = ARRAY_SIZE(name##_regs) * 80; \ |
| buf = vmalloc(max_len); \ |
| if (!buf) \ |
| return NULL; \ |
| \ |
| err = UPDATE_COUNTER(ar, name); \ |
| if (err) { \ |
| *ret = err; \ |
| return buf; \ |
| } \ |
| \ |
| TALLY_SUM_UP(ar, name); \ |
| \ |
| for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \ |
| ADD(buf, *ret, max_len, "%22s = %" f "[+%" f "]\n", \ |
| name##_regs[i].nreg, ar->debug.stats.name ##_sum[i],\ |
| ar->debug.stats.name ##_counter[i]); \ |
| } \ |
| \ |
| return buf; \ |
| } \ |
| DEBUGFS_DECLARE_RO_FILE(name, 0); |
| |
| #define DEBUGFS_HW_REG_FILE(name, f) \ |
| static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \ |
| char *dum, size_t bufsize, ssize_t *ret) \ |
| { \ |
| char *buf; \ |
| int i, max_len, err; \ |
| \ |
| max_len = ARRAY_SIZE(name##_regs) * 80; \ |
| buf = vmalloc(max_len); \ |
| if (!buf) \ |
| return NULL; \ |
| \ |
| err = UPDATE_COUNTER(ar, name); \ |
| if (err) { \ |
| *ret = err; \ |
| return buf; \ |
| } \ |
| \ |
| for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \ |
| ADD(buf, *ret, max_len, "%22s = %" f "\n", \ |
| name##_regs[i].nreg, \ |
| ar->debug.stats.name##_counter[i]); \ |
| } \ |
| \ |
| return buf; \ |
| } \ |
| DEBUGFS_DECLARE_RO_FILE(name, 0); |
| |
| static ssize_t carl9170_debugfs_hw_ioread32_write(struct ar9170 *ar, |
| const char *buf, size_t count) |
| { |
| int err = 0, i, n = 0, max_len = 32, res; |
| unsigned int reg, tmp; |
| |
| if (!count) |
| return 0; |
| |
| if (count > max_len) |
| return -E2BIG; |
| |
| res = sscanf(buf, "0x%X %d", ®, &n); |
| if (res < 1) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (res == 1) |
| n = 1; |
| |
| if (n > 15) { |
| err = -EMSGSIZE; |
| goto out; |
| } |
| |
| if ((reg >= 0x280000) || ((reg + (n << 2)) >= 0x280000)) { |
| err = -EADDRNOTAVAIL; |
| goto out; |
| } |
| |
| if (reg & 3) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| for (i = 0; i < n; i++) { |
| err = carl9170_read_reg(ar, reg + (i << 2), &tmp); |
| if (err) |
| goto out; |
| |
| ar->debug.ring[ar->debug.ring_tail].reg = reg + (i << 2); |
| ar->debug.ring[ar->debug.ring_tail].value = tmp; |
| ar->debug.ring_tail++; |
| ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE; |
| } |
| |
| out: |
| return err ? err : count; |
| } |
| |
| static char *carl9170_debugfs_hw_ioread32_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *ret) |
| { |
| int i = 0; |
| |
| while (ar->debug.ring_head != ar->debug.ring_tail) { |
| ADD(buf, *ret, bufsize, "%.8x = %.8x\n", |
| ar->debug.ring[ar->debug.ring_head].reg, |
| ar->debug.ring[ar->debug.ring_head].value); |
| |
| ar->debug.ring_head++; |
| ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE; |
| |
| if (i++ == 64) |
| break; |
| } |
| ar->debug.ring_head = ar->debug.ring_tail; |
| return buf; |
| } |
| DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40); |
| |
| static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf, |
| size_t count) |
| { |
| int err; |
| |
| if (count < 1) |
| return -EINVAL; |
| |
| switch (buf[0]) { |
| case 'F': |
| ar->needs_full_reset = true; |
| break; |
| |
| case 'R': |
| if (!IS_STARTED(ar)) { |
| err = -EAGAIN; |
| goto out; |
| } |
| |
| ar->needs_full_reset = false; |
| break; |
| |
| case 'M': |
| err = carl9170_mac_reset(ar); |
| if (err < 0) |
| count = err; |
| |
| goto out; |
| |
| case 'P': |
| err = carl9170_set_channel(ar, ar->hw->conf.chandef.chan, |
| cfg80211_get_chandef_type(&ar->hw->conf.chandef)); |
| if (err < 0) |
| count = err; |
| |
| goto out; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| carl9170_restart(ar, CARL9170_RR_USER_REQUEST); |
| |
| out: |
| return count; |
| } |
| |
| static char *carl9170_debugfs_bug_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *ret) |
| { |
| ADD(buf, *ret, bufsize, "[P]hy reinit, [R]estart, [F]ull usb reset, " |
| "[M]ac reset\n"); |
| ADD(buf, *ret, bufsize, "firmware restarts:%d, last reason:%d\n", |
| ar->restart_counter, ar->last_reason); |
| ADD(buf, *ret, bufsize, "phy reinit errors:%d (%d)\n", |
| ar->total_chan_fail, ar->chan_fail); |
| ADD(buf, *ret, bufsize, "reported firmware errors:%d\n", |
| ar->fw.err_counter); |
| ADD(buf, *ret, bufsize, "reported firmware BUGs:%d\n", |
| ar->fw.bug_counter); |
| ADD(buf, *ret, bufsize, "pending restart requests:%d\n", |
| atomic_read(&ar->pending_restarts)); |
| return buf; |
| } |
| __DEBUGFS_DECLARE_RW_FILE(bug, 400, CARL9170_STOPPED); |
| |
| static const char *const erp_modes[] = { |
| [CARL9170_ERP_INVALID] = "INVALID", |
| [CARL9170_ERP_AUTO] = "Automatic", |
| [CARL9170_ERP_MAC80211] = "Set by MAC80211", |
| [CARL9170_ERP_OFF] = "Force Off", |
| [CARL9170_ERP_RTS] = "Force RTS", |
| [CARL9170_ERP_CTS] = "Force CTS" |
| }; |
| |
| static char *carl9170_debugfs_erp_read(struct ar9170 *ar, char *buf, |
| size_t bufsize, ssize_t *ret) |
| { |
| ADD(buf, *ret, bufsize, "ERP Setting: (%d) -> %s\n", ar->erp_mode, |
| erp_modes[ar->erp_mode]); |
| return buf; |
| } |
| |
| static ssize_t carl9170_debugfs_erp_write(struct ar9170 *ar, const char *buf, |
| size_t count) |
| { |
| int res, val; |
| |
| if (count < 1) |
| return -EINVAL; |
| |
| res = sscanf(buf, "%d", &val); |
| if (res != 1) |
| return -EINVAL; |
| |
| if (!((val > CARL9170_ERP_INVALID) && |
| (val < __CARL9170_ERP_NUM))) |
| return -EINVAL; |
| |
| ar->erp_mode = val; |
| return count; |
| } |
| |
| DEBUGFS_DECLARE_RW_FILE(erp, 80); |
| |
| static ssize_t carl9170_debugfs_hw_iowrite32_write(struct ar9170 *ar, |
| const char *buf, size_t count) |
| { |
| int err = 0, max_len = 22, res; |
| u32 reg, val; |
| |
| if (!count) |
| return 0; |
| |
| if (count > max_len) |
| return -E2BIG; |
| |
| res = sscanf(buf, "0x%X 0x%X", ®, &val); |
| if (res != 2) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| if (reg <= 0x100000 || reg >= 0x280000) { |
| err = -EADDRNOTAVAIL; |
| goto out; |
| } |
| |
| if (reg & 3) { |
| err = -EINVAL; |
| goto out; |
| } |
| |
| err = carl9170_write_reg(ar, reg, val); |
| if (err) |
| goto out; |
| |
| out: |
| return err ? err : count; |
| } |
| DEBUGFS_DECLARE_WO_FILE(hw_iowrite32); |
| |
| DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u"); |
| DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u"); |
| DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u"); |
| DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x"); |
| DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x"); |
| DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x"); |
| DEBUGFS_QUEUE_DUMP(tx_status, 0); |
| DEBUGFS_QUEUE_DUMP(tx_status, 1); |
| DEBUGFS_QUEUE_DUMP(tx_status, 2); |
| DEBUGFS_QUEUE_DUMP(tx_status, 3); |
| DEBUGFS_QUEUE_DUMP(tx_pending, 0); |
| DEBUGFS_QUEUE_DUMP(tx_pending, 1); |
| DEBUGFS_QUEUE_DUMP(tx_pending, 2); |
| DEBUGFS_QUEUE_DUMP(tx_pending, 3); |
| DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d", |
| atomic_read(&ar->tx_anch_urbs)); |
| DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d", |
| atomic_read(&ar->rx_anch_urbs)); |
| DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d", |
| atomic_read(&ar->rx_work_urbs)); |
| DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d", |
| atomic_read(&ar->rx_pool_urbs)); |
| |
| DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d", |
| atomic_read(&ar->tx_total_queued)); |
| DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d", |
| atomic_read(&ar->tx_ampdu_scheduler)); |
| |
| DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d", |
| atomic_read(&ar->tx_total_pending)); |
| |
| DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d", |
| ar->tx_ampdu_list_len); |
| |
| DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d", |
| atomic_read(&ar->tx_ampdu_upload)); |
| |
| DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago", |
| jiffies_to_msecs(jiffies - ar->tx_janitor_last_run)); |
| |
| DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped); |
| |
| DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped); |
| |
| DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled); |
| DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d", |
| ar->rx_software_decryption); |
| DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d", |
| ar->current_factor); |
| DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d", |
| ar->current_density); |
| |
| DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int); |
| DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt); |
| |
| void carl9170_debugfs_register(struct ar9170 *ar) |
| { |
| ar->debug_dir = debugfs_create_dir(KBUILD_MODNAME, |
| ar->hw->wiphy->debugfsdir); |
| |
| #define DEBUGFS_ADD(name) \ |
| debugfs_create_file(#name, carl_debugfs_##name ##_ops.attr, \ |
| ar->debug_dir, ar, \ |
| &carl_debugfs_##name ## _ops.fops); |
| |
| DEBUGFS_ADD(usb_tx_anch_urbs); |
| DEBUGFS_ADD(usb_rx_pool_urbs); |
| DEBUGFS_ADD(usb_rx_anch_urbs); |
| DEBUGFS_ADD(usb_rx_work_urbs); |
| |
| DEBUGFS_ADD(tx_total_queued); |
| DEBUGFS_ADD(tx_total_pending); |
| DEBUGFS_ADD(tx_dropped); |
| DEBUGFS_ADD(tx_stuck); |
| DEBUGFS_ADD(tx_ampdu_upload); |
| DEBUGFS_ADD(tx_ampdu_scheduler); |
| DEBUGFS_ADD(tx_ampdu_list_len); |
| |
| DEBUGFS_ADD(rx_dropped); |
| DEBUGFS_ADD(sniffer_enabled); |
| DEBUGFS_ADD(rx_software_decryption); |
| |
| DEBUGFS_ADD(mem_usage); |
| DEBUGFS_ADD(qos_stat); |
| DEBUGFS_ADD(sta_psm); |
| DEBUGFS_ADD(ampdu_state); |
| |
| DEBUGFS_ADD(hw_tx_tally); |
| DEBUGFS_ADD(hw_rx_tally); |
| DEBUGFS_ADD(hw_phy_errors); |
| DEBUGFS_ADD(phy_noise); |
| |
| DEBUGFS_ADD(hw_wlan_queue); |
| DEBUGFS_ADD(hw_pta_queue); |
| DEBUGFS_ADD(hw_ampdu_info); |
| |
| DEBUGFS_ADD(ampdu_density); |
| DEBUGFS_ADD(ampdu_factor); |
| |
| DEBUGFS_ADD(tx_janitor_last_run); |
| |
| DEBUGFS_ADD(tx_status_0); |
| DEBUGFS_ADD(tx_status_1); |
| DEBUGFS_ADD(tx_status_2); |
| DEBUGFS_ADD(tx_status_3); |
| |
| DEBUGFS_ADD(tx_pending_0); |
| DEBUGFS_ADD(tx_pending_1); |
| DEBUGFS_ADD(tx_pending_2); |
| DEBUGFS_ADD(tx_pending_3); |
| |
| DEBUGFS_ADD(hw_ioread32); |
| DEBUGFS_ADD(hw_iowrite32); |
| DEBUGFS_ADD(bug); |
| |
| DEBUGFS_ADD(erp); |
| |
| DEBUGFS_ADD(vif_dump); |
| |
| DEBUGFS_ADD(beacon_int); |
| DEBUGFS_ADD(pretbtt); |
| |
| #undef DEBUGFS_ADD |
| } |
| |
| void carl9170_debugfs_unregister(struct ar9170 *ar) |
| { |
| debugfs_remove_recursive(ar->debug_dir); |
| } |