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0001 /*
0002  * Copyright (c) 2008-2011 Atheros Communications Inc.
0003  *
0004  * Permission to use, copy, modify, and/or distribute this software for any
0005  * purpose with or without fee is hereby granted, provided that the above
0006  * copyright notice and this permission notice appear in all copies.
0007  *
0008  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
0009  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
0010  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
0011  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
0012  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
0013  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
0014  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
0015  */
0016 
0017 #include <linux/slab.h>
0018 #include <linux/vmalloc.h>
0019 #include <linux/export.h>
0020 #include <asm/unaligned.h>
0021 
0022 #include "ath9k.h"
0023 
0024 #define REG_WRITE_D(_ah, _reg, _val) \
0025     ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
0026 #define REG_READ_D(_ah, _reg) \
0027     ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
0028 
0029 void ath9k_debug_sync_cause(struct ath_softc *sc, u32 sync_cause)
0030 {
0031     if (sync_cause)
0032         sc->debug.stats.istats.sync_cause_all++;
0033     if (sync_cause & AR_INTR_SYNC_RTC_IRQ)
0034         sc->debug.stats.istats.sync_rtc_irq++;
0035     if (sync_cause & AR_INTR_SYNC_MAC_IRQ)
0036         sc->debug.stats.istats.sync_mac_irq++;
0037     if (sync_cause & AR_INTR_SYNC_EEPROM_ILLEGAL_ACCESS)
0038         sc->debug.stats.istats.eeprom_illegal_access++;
0039     if (sync_cause & AR_INTR_SYNC_APB_TIMEOUT)
0040         sc->debug.stats.istats.apb_timeout++;
0041     if (sync_cause & AR_INTR_SYNC_PCI_MODE_CONFLICT)
0042         sc->debug.stats.istats.pci_mode_conflict++;
0043     if (sync_cause & AR_INTR_SYNC_HOST1_FATAL)
0044         sc->debug.stats.istats.host1_fatal++;
0045     if (sync_cause & AR_INTR_SYNC_HOST1_PERR)
0046         sc->debug.stats.istats.host1_perr++;
0047     if (sync_cause & AR_INTR_SYNC_TRCV_FIFO_PERR)
0048         sc->debug.stats.istats.trcv_fifo_perr++;
0049     if (sync_cause & AR_INTR_SYNC_RADM_CPL_EP)
0050         sc->debug.stats.istats.radm_cpl_ep++;
0051     if (sync_cause & AR_INTR_SYNC_RADM_CPL_DLLP_ABORT)
0052         sc->debug.stats.istats.radm_cpl_dllp_abort++;
0053     if (sync_cause & AR_INTR_SYNC_RADM_CPL_TLP_ABORT)
0054         sc->debug.stats.istats.radm_cpl_tlp_abort++;
0055     if (sync_cause & AR_INTR_SYNC_RADM_CPL_ECRC_ERR)
0056         sc->debug.stats.istats.radm_cpl_ecrc_err++;
0057     if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT)
0058         sc->debug.stats.istats.radm_cpl_timeout++;
0059     if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT)
0060         sc->debug.stats.istats.local_timeout++;
0061     if (sync_cause & AR_INTR_SYNC_PM_ACCESS)
0062         sc->debug.stats.istats.pm_access++;
0063     if (sync_cause & AR_INTR_SYNC_MAC_AWAKE)
0064         sc->debug.stats.istats.mac_awake++;
0065     if (sync_cause & AR_INTR_SYNC_MAC_ASLEEP)
0066         sc->debug.stats.istats.mac_asleep++;
0067     if (sync_cause & AR_INTR_SYNC_MAC_SLEEP_ACCESS)
0068         sc->debug.stats.istats.mac_sleep_access++;
0069 }
0070 
0071 static ssize_t ath9k_debugfs_read_buf(struct file *file, char __user *user_buf,
0072                       size_t count, loff_t *ppos)
0073 {
0074     u8 *buf = file->private_data;
0075     return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
0076 }
0077 
0078 static int ath9k_debugfs_release_buf(struct inode *inode, struct file *file)
0079 {
0080     vfree(file->private_data);
0081     return 0;
0082 }
0083 
0084 #ifdef CONFIG_ATH_DEBUG
0085 
0086 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
0087                  size_t count, loff_t *ppos)
0088 {
0089     struct ath_softc *sc = file->private_data;
0090     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0091     char buf[32];
0092     unsigned int len;
0093 
0094     len = sprintf(buf, "0x%08x\n", common->debug_mask);
0095     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
0096 }
0097 
0098 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
0099                  size_t count, loff_t *ppos)
0100 {
0101     struct ath_softc *sc = file->private_data;
0102     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0103     unsigned long mask;
0104     char buf[32];
0105     ssize_t len;
0106 
0107     len = min(count, sizeof(buf) - 1);
0108     if (copy_from_user(buf, user_buf, len))
0109         return -EFAULT;
0110 
0111     buf[len] = '\0';
0112     if (kstrtoul(buf, 0, &mask))
0113         return -EINVAL;
0114 
0115     common->debug_mask = mask;
0116     return count;
0117 }
0118 
0119 static const struct file_operations fops_debug = {
0120     .read = read_file_debug,
0121     .write = write_file_debug,
0122     .open = simple_open,
0123     .owner = THIS_MODULE,
0124     .llseek = default_llseek,
0125 };
0126 
0127 #endif
0128 
0129 #define DMA_BUF_LEN 1024
0130 
0131 
0132 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
0133                  size_t count, loff_t *ppos)
0134 {
0135     struct ath_softc *sc = file->private_data;
0136     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0137     struct ath_hw *ah = sc->sc_ah;
0138     unsigned int len = 0;
0139     const unsigned int size = 1024;
0140     ssize_t retval = 0;
0141     char *buf;
0142     int i;
0143     struct {
0144         const char *name;
0145         unsigned int val;
0146     } ani_info[] = {
0147         { "ANI RESET", ah->stats.ast_ani_reset },
0148         { "OFDM LEVEL", ah->ani.ofdmNoiseImmunityLevel },
0149         { "CCK LEVEL", ah->ani.cckNoiseImmunityLevel },
0150         { "SPUR UP", ah->stats.ast_ani_spurup },
0151         { "SPUR DOWN", ah->stats.ast_ani_spurdown },
0152         { "OFDM WS-DET ON", ah->stats.ast_ani_ofdmon },
0153         { "OFDM WS-DET OFF", ah->stats.ast_ani_ofdmoff },
0154         { "MRC-CCK ON", ah->stats.ast_ani_ccklow },
0155         { "MRC-CCK OFF", ah->stats.ast_ani_cckhigh },
0156         { "FIR-STEP UP", ah->stats.ast_ani_stepup },
0157         { "FIR-STEP DOWN", ah->stats.ast_ani_stepdown },
0158         { "INV LISTENTIME", ah->stats.ast_ani_lneg_or_lzero },
0159         { "OFDM ERRORS", ah->stats.ast_ani_ofdmerrs },
0160         { "CCK ERRORS", ah->stats.ast_ani_cckerrs },
0161     };
0162 
0163     buf = kzalloc(size, GFP_KERNEL);
0164     if (buf == NULL)
0165         return -ENOMEM;
0166 
0167     len += scnprintf(buf + len, size - len, "%15s: %s\n", "ANI",
0168              common->disable_ani ? "DISABLED" : "ENABLED");
0169 
0170     if (common->disable_ani)
0171         goto exit;
0172 
0173     for (i = 0; i < ARRAY_SIZE(ani_info); i++)
0174         len += scnprintf(buf + len, size - len, "%15s: %u\n",
0175                  ani_info[i].name, ani_info[i].val);
0176 
0177 exit:
0178     if (len > size)
0179         len = size;
0180 
0181     retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
0182     kfree(buf);
0183 
0184     return retval;
0185 }
0186 
0187 static ssize_t write_file_ani(struct file *file,
0188                   const char __user *user_buf,
0189                   size_t count, loff_t *ppos)
0190 {
0191     struct ath_softc *sc = file->private_data;
0192     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0193     unsigned long ani;
0194     char buf[32];
0195     ssize_t len;
0196 
0197     len = min(count, sizeof(buf) - 1);
0198     if (copy_from_user(buf, user_buf, len))
0199         return -EFAULT;
0200 
0201     buf[len] = '\0';
0202     if (kstrtoul(buf, 0, &ani))
0203         return -EINVAL;
0204 
0205     if (ani > 1)
0206         return -EINVAL;
0207 
0208     common->disable_ani = !ani;
0209 
0210     if (common->disable_ani) {
0211         clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
0212         ath_stop_ani(sc);
0213     } else {
0214         ath_check_ani(sc);
0215     }
0216 
0217     return count;
0218 }
0219 
0220 static const struct file_operations fops_ani = {
0221     .read = read_file_ani,
0222     .write = write_file_ani,
0223     .open = simple_open,
0224     .owner = THIS_MODULE,
0225     .llseek = default_llseek,
0226 };
0227 
0228 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
0229 
0230 static ssize_t read_file_bt_ant_diversity(struct file *file,
0231                       char __user *user_buf,
0232                       size_t count, loff_t *ppos)
0233 {
0234     struct ath_softc *sc = file->private_data;
0235     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0236     char buf[32];
0237     unsigned int len;
0238 
0239     len = sprintf(buf, "%d\n", common->bt_ant_diversity);
0240     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
0241 }
0242 
0243 static ssize_t write_file_bt_ant_diversity(struct file *file,
0244                        const char __user *user_buf,
0245                        size_t count, loff_t *ppos)
0246 {
0247     struct ath_softc *sc = file->private_data;
0248     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0249     struct ath9k_hw_capabilities *pCap = &sc->sc_ah->caps;
0250     unsigned long bt_ant_diversity;
0251     char buf[32];
0252     ssize_t len;
0253 
0254     len = min(count, sizeof(buf) - 1);
0255     if (copy_from_user(buf, user_buf, len))
0256         return -EFAULT;
0257 
0258     if (!(pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
0259         goto exit;
0260 
0261     buf[len] = '\0';
0262     if (kstrtoul(buf, 0, &bt_ant_diversity))
0263         return -EINVAL;
0264 
0265     common->bt_ant_diversity = !!bt_ant_diversity;
0266     ath9k_ps_wakeup(sc);
0267     ath9k_hw_set_bt_ant_diversity(sc->sc_ah, common->bt_ant_diversity);
0268     ath_dbg(common, CONFIG, "Enable WLAN/BT RX Antenna diversity: %d\n",
0269         common->bt_ant_diversity);
0270     ath9k_ps_restore(sc);
0271 exit:
0272     return count;
0273 }
0274 
0275 static const struct file_operations fops_bt_ant_diversity = {
0276     .read = read_file_bt_ant_diversity,
0277     .write = write_file_bt_ant_diversity,
0278     .open = simple_open,
0279     .owner = THIS_MODULE,
0280     .llseek = default_llseek,
0281 };
0282 
0283 #endif
0284 
0285 void ath9k_debug_stat_ant(struct ath_softc *sc,
0286               struct ath_hw_antcomb_conf *div_ant_conf,
0287               int main_rssi_avg, int alt_rssi_avg)
0288 {
0289     struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
0290     struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
0291 
0292     as_main->lna_attempt_cnt[div_ant_conf->main_lna_conf]++;
0293     as_alt->lna_attempt_cnt[div_ant_conf->alt_lna_conf]++;
0294 
0295     as_main->rssi_avg = main_rssi_avg;
0296     as_alt->rssi_avg = alt_rssi_avg;
0297 }
0298 
0299 static ssize_t read_file_antenna_diversity(struct file *file,
0300                        char __user *user_buf,
0301                        size_t count, loff_t *ppos)
0302 {
0303     struct ath_softc *sc = file->private_data;
0304     struct ath_hw *ah = sc->sc_ah;
0305     struct ath9k_hw_capabilities *pCap = &ah->caps;
0306     struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
0307     struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
0308     struct ath_hw_antcomb_conf div_ant_conf;
0309     unsigned int len = 0;
0310     const unsigned int size = 1024;
0311     ssize_t retval = 0;
0312     char *buf;
0313     static const char *lna_conf_str[4] = {
0314         "LNA1_MINUS_LNA2", "LNA2", "LNA1", "LNA1_PLUS_LNA2"
0315     };
0316 
0317     buf = kzalloc(size, GFP_KERNEL);
0318     if (buf == NULL)
0319         return -ENOMEM;
0320 
0321     if (!(pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) {
0322         len += scnprintf(buf + len, size - len, "%s\n",
0323                  "Antenna Diversity Combining is disabled");
0324         goto exit;
0325     }
0326 
0327     ath9k_ps_wakeup(sc);
0328     ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
0329     len += scnprintf(buf + len, size - len, "Current MAIN config : %s\n",
0330              lna_conf_str[div_ant_conf.main_lna_conf]);
0331     len += scnprintf(buf + len, size - len, "Current ALT config  : %s\n",
0332              lna_conf_str[div_ant_conf.alt_lna_conf]);
0333     len += scnprintf(buf + len, size - len, "Average MAIN RSSI   : %d\n",
0334              as_main->rssi_avg);
0335     len += scnprintf(buf + len, size - len, "Average ALT RSSI    : %d\n\n",
0336              as_alt->rssi_avg);
0337     ath9k_ps_restore(sc);
0338 
0339     len += scnprintf(buf + len, size - len, "Packet Receive Cnt:\n");
0340     len += scnprintf(buf + len, size - len, "-------------------\n");
0341 
0342     len += scnprintf(buf + len, size - len, "%30s%15s\n",
0343              "MAIN", "ALT");
0344     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0345              "TOTAL COUNT",
0346              as_main->recv_cnt,
0347              as_alt->recv_cnt);
0348     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0349              "LNA1",
0350              as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1],
0351              as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1]);
0352     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0353              "LNA2",
0354              as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2],
0355              as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2]);
0356     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0357              "LNA1 + LNA2",
0358              as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
0359              as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
0360     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0361              "LNA1 - LNA2",
0362              as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
0363              as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
0364 
0365     len += scnprintf(buf + len, size - len, "\nLNA Config Attempts:\n");
0366     len += scnprintf(buf + len, size - len, "--------------------\n");
0367 
0368     len += scnprintf(buf + len, size - len, "%30s%15s\n",
0369              "MAIN", "ALT");
0370     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0371              "LNA1",
0372              as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1],
0373              as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1]);
0374     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0375              "LNA2",
0376              as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2],
0377              as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2]);
0378     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0379              "LNA1 + LNA2",
0380              as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
0381              as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
0382     len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
0383              "LNA1 - LNA2",
0384              as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
0385              as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
0386 
0387 exit:
0388     if (len > size)
0389         len = size;
0390 
0391     retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
0392     kfree(buf);
0393 
0394     return retval;
0395 }
0396 
0397 static const struct file_operations fops_antenna_diversity = {
0398     .read = read_file_antenna_diversity,
0399     .open = simple_open,
0400     .owner = THIS_MODULE,
0401     .llseek = default_llseek,
0402 };
0403 
0404 static int read_file_dma(struct seq_file *file, void *data)
0405 {
0406     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
0407     struct ath_softc *sc = hw->priv;
0408     struct ath_hw *ah = sc->sc_ah;
0409     u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
0410     int i, qcuOffset = 0, dcuOffset = 0;
0411     u32 *qcuBase = &val[0], *dcuBase = &val[4];
0412 
0413     ath9k_ps_wakeup(sc);
0414 
0415     REG_WRITE_D(ah, AR_MACMISC,
0416           ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
0417            (AR_MACMISC_MISC_OBS_BUS_1 <<
0418             AR_MACMISC_MISC_OBS_BUS_MSB_S)));
0419 
0420     seq_puts(file, "Raw DMA Debug values:\n");
0421 
0422     for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
0423         if (i % 4 == 0)
0424             seq_puts(file, "\n");
0425 
0426         val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
0427         seq_printf(file, "%d: %08x ", i, val[i]);
0428     }
0429 
0430     seq_puts(file, "\n\n");
0431     seq_puts(file, "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
0432 
0433     for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
0434         if (i == 8) {
0435             qcuOffset = 0;
0436             qcuBase++;
0437         }
0438 
0439         if (i == 6) {
0440             dcuOffset = 0;
0441             dcuBase++;
0442         }
0443 
0444         seq_printf(file, "%2d          %2x      %1x     %2x           %2x\n",
0445                i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
0446                (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
0447                (val[2] & (0x7 << (i * 3))) >> (i * 3),
0448                (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
0449     }
0450 
0451     seq_puts(file, "\n");
0452 
0453     seq_printf(file, "qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
0454            (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
0455     seq_printf(file, "qcu_complete state: %2x    dcu_complete state:     %2x\n",
0456            (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
0457     seq_printf(file, "dcu_arb state:      %2x    dcu_fp state:           %2x\n",
0458            (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
0459     seq_printf(file, "chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
0460            (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
0461     seq_printf(file, "txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
0462            (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
0463     seq_printf(file, "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
0464            (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
0465 
0466     seq_printf(file, "pcu observe: 0x%x\n", REG_READ_D(ah, AR_OBS_BUS_1));
0467     seq_printf(file, "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
0468 
0469     ath9k_ps_restore(sc);
0470 
0471     return 0;
0472 }
0473 
0474 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
0475 {
0476     if (status)
0477         sc->debug.stats.istats.total++;
0478     if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
0479         if (status & ATH9K_INT_RXLP)
0480             sc->debug.stats.istats.rxlp++;
0481         if (status & ATH9K_INT_RXHP)
0482             sc->debug.stats.istats.rxhp++;
0483         if (status & ATH9K_INT_BB_WATCHDOG)
0484             sc->debug.stats.istats.bb_watchdog++;
0485     } else {
0486         if (status & ATH9K_INT_RX)
0487             sc->debug.stats.istats.rxok++;
0488     }
0489     if (status & ATH9K_INT_RXEOL)
0490         sc->debug.stats.istats.rxeol++;
0491     if (status & ATH9K_INT_RXORN)
0492         sc->debug.stats.istats.rxorn++;
0493     if (status & ATH9K_INT_TX)
0494         sc->debug.stats.istats.txok++;
0495     if (status & ATH9K_INT_TXURN)
0496         sc->debug.stats.istats.txurn++;
0497     if (status & ATH9K_INT_RXPHY)
0498         sc->debug.stats.istats.rxphyerr++;
0499     if (status & ATH9K_INT_RXKCM)
0500         sc->debug.stats.istats.rx_keycache_miss++;
0501     if (status & ATH9K_INT_SWBA)
0502         sc->debug.stats.istats.swba++;
0503     if (status & ATH9K_INT_BMISS)
0504         sc->debug.stats.istats.bmiss++;
0505     if (status & ATH9K_INT_BNR)
0506         sc->debug.stats.istats.bnr++;
0507     if (status & ATH9K_INT_CST)
0508         sc->debug.stats.istats.cst++;
0509     if (status & ATH9K_INT_GTT)
0510         sc->debug.stats.istats.gtt++;
0511     if (status & ATH9K_INT_TIM)
0512         sc->debug.stats.istats.tim++;
0513     if (status & ATH9K_INT_CABEND)
0514         sc->debug.stats.istats.cabend++;
0515     if (status & ATH9K_INT_DTIMSYNC)
0516         sc->debug.stats.istats.dtimsync++;
0517     if (status & ATH9K_INT_DTIM)
0518         sc->debug.stats.istats.dtim++;
0519     if (status & ATH9K_INT_TSFOOR)
0520         sc->debug.stats.istats.tsfoor++;
0521     if (status & ATH9K_INT_MCI)
0522         sc->debug.stats.istats.mci++;
0523     if (status & ATH9K_INT_GENTIMER)
0524         sc->debug.stats.istats.gen_timer++;
0525 }
0526 
0527 static int read_file_interrupt(struct seq_file *file, void *data)
0528 {
0529     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
0530     struct ath_softc *sc = hw->priv;
0531 
0532 #define PR_IS(a, s)                     \
0533     do {                            \
0534         seq_printf(file, "%21s: %10u\n", a,     \
0535                sc->debug.stats.istats.s);       \
0536     } while (0)
0537 
0538     if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
0539         PR_IS("RXLP", rxlp);
0540         PR_IS("RXHP", rxhp);
0541         PR_IS("WATCHDOG", bb_watchdog);
0542     } else {
0543         PR_IS("RX", rxok);
0544     }
0545     PR_IS("RXEOL", rxeol);
0546     PR_IS("RXORN", rxorn);
0547     PR_IS("TX", txok);
0548     PR_IS("TXURN", txurn);
0549     PR_IS("MIB", mib);
0550     PR_IS("RXPHY", rxphyerr);
0551     PR_IS("RXKCM", rx_keycache_miss);
0552     PR_IS("SWBA", swba);
0553     PR_IS("BMISS", bmiss);
0554     PR_IS("BNR", bnr);
0555     PR_IS("CST", cst);
0556     PR_IS("GTT", gtt);
0557     PR_IS("TIM", tim);
0558     PR_IS("CABEND", cabend);
0559     PR_IS("DTIMSYNC", dtimsync);
0560     PR_IS("DTIM", dtim);
0561     PR_IS("TSFOOR", tsfoor);
0562     PR_IS("MCI", mci);
0563     PR_IS("GENTIMER", gen_timer);
0564     PR_IS("TOTAL", total);
0565 
0566     seq_puts(file, "SYNC_CAUSE stats:\n");
0567 
0568     PR_IS("Sync-All", sync_cause_all);
0569     PR_IS("RTC-IRQ", sync_rtc_irq);
0570     PR_IS("MAC-IRQ", sync_mac_irq);
0571     PR_IS("EEPROM-Illegal-Access", eeprom_illegal_access);
0572     PR_IS("APB-Timeout", apb_timeout);
0573     PR_IS("PCI-Mode-Conflict", pci_mode_conflict);
0574     PR_IS("HOST1-Fatal", host1_fatal);
0575     PR_IS("HOST1-Perr", host1_perr);
0576     PR_IS("TRCV-FIFO-Perr", trcv_fifo_perr);
0577     PR_IS("RADM-CPL-EP", radm_cpl_ep);
0578     PR_IS("RADM-CPL-DLLP-Abort", radm_cpl_dllp_abort);
0579     PR_IS("RADM-CPL-TLP-Abort", radm_cpl_tlp_abort);
0580     PR_IS("RADM-CPL-ECRC-Err", radm_cpl_ecrc_err);
0581     PR_IS("RADM-CPL-Timeout", radm_cpl_timeout);
0582     PR_IS("Local-Bus-Timeout", local_timeout);
0583     PR_IS("PM-Access", pm_access);
0584     PR_IS("MAC-Awake", mac_awake);
0585     PR_IS("MAC-Asleep", mac_asleep);
0586     PR_IS("MAC-Sleep-Access", mac_sleep_access);
0587 
0588     return 0;
0589 }
0590 
0591 static int read_file_xmit(struct seq_file *file, void *data)
0592 {
0593     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
0594     struct ath_softc *sc = hw->priv;
0595 
0596     seq_printf(file, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
0597 
0598     PR("MPDUs Queued:    ", queued);
0599     PR("MPDUs Completed: ", completed);
0600     PR("MPDUs XRetried:  ", xretries);
0601     PR("Aggregates:      ", a_aggr);
0602     PR("AMPDUs Queued HW:", a_queued_hw);
0603     PR("AMPDUs Completed:", a_completed);
0604     PR("AMPDUs Retried:  ", a_retries);
0605     PR("AMPDUs XRetried: ", a_xretries);
0606     PR("TXERR Filtered:  ", txerr_filtered);
0607     PR("FIFO Underrun:   ", fifo_underrun);
0608     PR("TXOP Exceeded:   ", xtxop);
0609     PR("TXTIMER Expiry:  ", timer_exp);
0610     PR("DESC CFG Error:  ", desc_cfg_err);
0611     PR("DATA Underrun:   ", data_underrun);
0612     PR("DELIM Underrun:  ", delim_underrun);
0613     PR("TX-Pkts-All:     ", tx_pkts_all);
0614     PR("TX-Bytes-All:    ", tx_bytes_all);
0615     PR("HW-put-tx-buf:   ", puttxbuf);
0616     PR("HW-tx-start:     ", txstart);
0617     PR("HW-tx-proc-desc: ", txprocdesc);
0618     PR("TX-Failed:       ", txfailed);
0619 
0620     return 0;
0621 }
0622 
0623 static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
0624             struct seq_file *file)
0625 {
0626     ath_txq_lock(sc, txq);
0627 
0628     seq_printf(file, "%s: %d ", "qnum", txq->axq_qnum);
0629     seq_printf(file, "%s: %2d ", "qdepth", txq->axq_depth);
0630     seq_printf(file, "%s: %2d ", "ampdu-depth", txq->axq_ampdu_depth);
0631     seq_printf(file, "%s: %3d\n", "pending", txq->pending_frames);
0632 
0633     ath_txq_unlock(sc, txq);
0634 }
0635 
0636 static int read_file_queues(struct seq_file *file, void *data)
0637 {
0638     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
0639     struct ath_softc *sc = hw->priv;
0640     struct ath_txq *txq;
0641     int i;
0642     static const char *qname[4] = {
0643         "VO", "VI", "BE", "BK"
0644     };
0645 
0646     for (i = 0; i < IEEE80211_NUM_ACS; i++) {
0647         txq = sc->tx.txq_map[i];
0648         seq_printf(file, "(%s):  ", qname[i]);
0649         print_queue(sc, txq, file);
0650     }
0651 
0652     seq_puts(file, "(CAB): ");
0653     print_queue(sc, sc->beacon.cabq, file);
0654 
0655     return 0;
0656 }
0657 
0658 static int read_file_misc(struct seq_file *file, void *data)
0659 {
0660     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
0661     struct ath_softc *sc = hw->priv;
0662     struct ath_common *common = ath9k_hw_common(sc->sc_ah);
0663     struct ath9k_vif_iter_data iter_data;
0664     struct ath_chanctx *ctx;
0665     unsigned int reg;
0666     u32 rxfilter, i;
0667 
0668     seq_printf(file, "BSSID: %pM\n", common->curbssid);
0669     seq_printf(file, "BSSID-MASK: %pM\n", common->bssidmask);
0670     seq_printf(file, "OPMODE: %s\n",
0671            ath_opmode_to_string(sc->sc_ah->opmode));
0672 
0673     ath9k_ps_wakeup(sc);
0674     rxfilter = ath9k_hw_getrxfilter(sc->sc_ah);
0675     ath9k_ps_restore(sc);
0676 
0677     seq_printf(file, "RXFILTER: 0x%x", rxfilter);
0678 
0679     if (rxfilter & ATH9K_RX_FILTER_UCAST)
0680         seq_puts(file, " UCAST");
0681     if (rxfilter & ATH9K_RX_FILTER_MCAST)
0682         seq_puts(file, " MCAST");
0683     if (rxfilter & ATH9K_RX_FILTER_BCAST)
0684         seq_puts(file, " BCAST");
0685     if (rxfilter & ATH9K_RX_FILTER_CONTROL)
0686         seq_puts(file, " CONTROL");
0687     if (rxfilter & ATH9K_RX_FILTER_BEACON)
0688         seq_puts(file, " BEACON");
0689     if (rxfilter & ATH9K_RX_FILTER_PROM)
0690         seq_puts(file, " PROM");
0691     if (rxfilter & ATH9K_RX_FILTER_PROBEREQ)
0692         seq_puts(file, " PROBEREQ");
0693     if (rxfilter & ATH9K_RX_FILTER_PHYERR)
0694         seq_puts(file, " PHYERR");
0695     if (rxfilter & ATH9K_RX_FILTER_MYBEACON)
0696         seq_puts(file, " MYBEACON");
0697     if (rxfilter & ATH9K_RX_FILTER_COMP_BAR)
0698         seq_puts(file, " COMP_BAR");
0699     if (rxfilter & ATH9K_RX_FILTER_PSPOLL)
0700         seq_puts(file, " PSPOLL");
0701     if (rxfilter & ATH9K_RX_FILTER_PHYRADAR)
0702         seq_puts(file, " PHYRADAR");
0703     if (rxfilter & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
0704         seq_puts(file, " MCAST_BCAST_ALL");
0705     if (rxfilter & ATH9K_RX_FILTER_CONTROL_WRAPPER)
0706         seq_puts(file, " CONTROL_WRAPPER");
0707 
0708     seq_puts(file, "\n");
0709 
0710     reg = sc->sc_ah->imask;
0711 
0712     seq_printf(file, "INTERRUPT-MASK: 0x%x", reg);
0713 
0714     if (reg & ATH9K_INT_SWBA)
0715         seq_puts(file, " SWBA");
0716     if (reg & ATH9K_INT_BMISS)
0717         seq_puts(file, " BMISS");
0718     if (reg & ATH9K_INT_CST)
0719         seq_puts(file, " CST");
0720     if (reg & ATH9K_INT_RX)
0721         seq_puts(file, " RX");
0722     if (reg & ATH9K_INT_RXHP)
0723         seq_puts(file, " RXHP");
0724     if (reg & ATH9K_INT_RXLP)
0725         seq_puts(file, " RXLP");
0726     if (reg & ATH9K_INT_BB_WATCHDOG)
0727         seq_puts(file, " BB_WATCHDOG");
0728 
0729     seq_puts(file, "\n");
0730 
0731     i = 0;
0732     ath_for_each_chanctx(sc, ctx) {
0733         if (list_empty(&ctx->vifs))
0734             continue;
0735         ath9k_calculate_iter_data(sc, ctx, &iter_data);
0736 
0737         seq_printf(file,
0738                "VIFS: CTX %i(%i) AP: %i STA: %i MESH: %i",
0739                i++, (int)(ctx->assigned), iter_data.naps,
0740                iter_data.nstations,
0741                iter_data.nmeshes);
0742         seq_printf(file, " ADHOC: %i OCB: %i TOTAL: %hi BEACON-VIF: %hi\n",
0743                iter_data.nadhocs, iter_data.nocbs, sc->cur_chan->nvifs,
0744                sc->nbcnvifs);
0745     }
0746 
0747     return 0;
0748 }
0749 
0750 static int read_file_reset(struct seq_file *file, void *data)
0751 {
0752     struct ath_softc *sc = file->private;
0753     static const char * const reset_cause[__RESET_TYPE_MAX] = {
0754         [RESET_TYPE_USER] = "User reset",
0755         [RESET_TYPE_BB_HANG] = "Baseband Hang",
0756         [RESET_TYPE_BB_WATCHDOG] = "Baseband Watchdog",
0757         [RESET_TYPE_FATAL_INT] = "Fatal HW Error",
0758         [RESET_TYPE_TX_ERROR] = "TX HW error",
0759         [RESET_TYPE_TX_GTT] = "Transmit timeout",
0760         [RESET_TYPE_TX_HANG] = "TX Path Hang",
0761         [RESET_TYPE_PLL_HANG] = "PLL RX Hang",
0762         [RESET_TYPE_MAC_HANG] = "MAC Hang",
0763         [RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
0764         [RESET_TYPE_MCI] = "MCI Reset",
0765         [RESET_TYPE_CALIBRATION] = "Calibration error",
0766         [RESET_TX_DMA_ERROR] = "Tx DMA stop error",
0767         [RESET_RX_DMA_ERROR] = "Rx DMA stop error",
0768     };
0769     int i;
0770 
0771     for (i = 0; i < ARRAY_SIZE(reset_cause); i++) {
0772         if (!reset_cause[i])
0773             continue;
0774 
0775         seq_printf(file, "%17s: %2d\n", reset_cause[i],
0776                sc->debug.stats.reset[i]);
0777     }
0778 
0779     return 0;
0780 }
0781 
0782 static int open_file_reset(struct inode *inode, struct file *f)
0783 {
0784     return single_open(f, read_file_reset, inode->i_private);
0785 }
0786 
0787 static ssize_t write_file_reset(struct file *file,
0788                 const char __user *user_buf,
0789                 size_t count, loff_t *ppos)
0790 {
0791     struct ath_softc *sc = file_inode(file)->i_private;
0792     struct ath_hw *ah = sc->sc_ah;
0793     struct ath_common *common = ath9k_hw_common(ah);
0794     unsigned long val;
0795     char buf[32];
0796     ssize_t len;
0797 
0798     len = min(count, sizeof(buf) - 1);
0799     if (copy_from_user(buf, user_buf, len))
0800         return -EFAULT;
0801 
0802     buf[len] = '\0';
0803     if (kstrtoul(buf, 0, &val))
0804         return -EINVAL;
0805 
0806     if (val != 1)
0807         return -EINVAL;
0808 
0809     /* avoid rearming hw_reset_work on shutdown */
0810     mutex_lock(&sc->mutex);
0811     if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
0812         mutex_unlock(&sc->mutex);
0813         return -EBUSY;
0814     }
0815 
0816     ath9k_queue_reset(sc, RESET_TYPE_USER);
0817     mutex_unlock(&sc->mutex);
0818 
0819     return count;
0820 }
0821 
0822 static const struct file_operations fops_reset = {
0823     .read = seq_read,
0824     .write = write_file_reset,
0825     .open = open_file_reset,
0826     .owner = THIS_MODULE,
0827     .llseek = seq_lseek,
0828     .release = single_release,
0829 };
0830 
0831 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
0832                struct ath_tx_status *ts, struct ath_txq *txq,
0833                unsigned int flags)
0834 {
0835     int qnum = txq->axq_qnum;
0836 
0837     TX_STAT_INC(sc, qnum, tx_pkts_all);
0838     sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
0839 
0840     if (bf_isampdu(bf)) {
0841         if (flags & ATH_TX_ERROR)
0842             TX_STAT_INC(sc, qnum, a_xretries);
0843         else
0844             TX_STAT_INC(sc, qnum, a_completed);
0845     } else {
0846         if (ts->ts_status & ATH9K_TXERR_XRETRY)
0847             TX_STAT_INC(sc, qnum, xretries);
0848         else
0849             TX_STAT_INC(sc, qnum, completed);
0850     }
0851 
0852     if (ts->ts_status & ATH9K_TXERR_FILT)
0853         TX_STAT_INC(sc, qnum, txerr_filtered);
0854     if (ts->ts_status & ATH9K_TXERR_FIFO)
0855         TX_STAT_INC(sc, qnum, fifo_underrun);
0856     if (ts->ts_status & ATH9K_TXERR_XTXOP)
0857         TX_STAT_INC(sc, qnum, xtxop);
0858     if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
0859         TX_STAT_INC(sc, qnum, timer_exp);
0860     if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
0861         TX_STAT_INC(sc, qnum, desc_cfg_err);
0862     if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
0863         TX_STAT_INC(sc, qnum, data_underrun);
0864     if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
0865         TX_STAT_INC(sc, qnum, delim_underrun);
0866 }
0867 
0868 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
0869 {
0870     ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
0871 }
0872 
0873 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
0874                 size_t count, loff_t *ppos)
0875 {
0876     struct ath_softc *sc = file->private_data;
0877     char buf[32];
0878     unsigned int len;
0879 
0880     len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
0881     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
0882 }
0883 
0884 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
0885                  size_t count, loff_t *ppos)
0886 {
0887     struct ath_softc *sc = file->private_data;
0888     unsigned long regidx;
0889     char buf[32];
0890     ssize_t len;
0891 
0892     len = min(count, sizeof(buf) - 1);
0893     if (copy_from_user(buf, user_buf, len))
0894         return -EFAULT;
0895 
0896     buf[len] = '\0';
0897     if (kstrtoul(buf, 0, &regidx))
0898         return -EINVAL;
0899 
0900     sc->debug.regidx = regidx;
0901     return count;
0902 }
0903 
0904 static const struct file_operations fops_regidx = {
0905     .read = read_file_regidx,
0906     .write = write_file_regidx,
0907     .open = simple_open,
0908     .owner = THIS_MODULE,
0909     .llseek = default_llseek,
0910 };
0911 
0912 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
0913                 size_t count, loff_t *ppos)
0914 {
0915     struct ath_softc *sc = file->private_data;
0916     struct ath_hw *ah = sc->sc_ah;
0917     char buf[32];
0918     unsigned int len;
0919     u32 regval;
0920 
0921     ath9k_ps_wakeup(sc);
0922     regval = REG_READ_D(ah, sc->debug.regidx);
0923     ath9k_ps_restore(sc);
0924     len = sprintf(buf, "0x%08x\n", regval);
0925     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
0926 }
0927 
0928 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
0929                  size_t count, loff_t *ppos)
0930 {
0931     struct ath_softc *sc = file->private_data;
0932     struct ath_hw *ah = sc->sc_ah;
0933     unsigned long regval;
0934     char buf[32];
0935     ssize_t len;
0936 
0937     len = min(count, sizeof(buf) - 1);
0938     if (copy_from_user(buf, user_buf, len))
0939         return -EFAULT;
0940 
0941     buf[len] = '\0';
0942     if (kstrtoul(buf, 0, &regval))
0943         return -EINVAL;
0944 
0945     ath9k_ps_wakeup(sc);
0946     REG_WRITE_D(ah, sc->debug.regidx, regval);
0947     ath9k_ps_restore(sc);
0948     return count;
0949 }
0950 
0951 static const struct file_operations fops_regval = {
0952     .read = read_file_regval,
0953     .write = write_file_regval,
0954     .open = simple_open,
0955     .owner = THIS_MODULE,
0956     .llseek = default_llseek,
0957 };
0958 
0959 #define REGDUMP_LINE_SIZE   20
0960 
0961 static int open_file_regdump(struct inode *inode, struct file *file)
0962 {
0963     struct ath_softc *sc = inode->i_private;
0964     unsigned int len = 0;
0965     u8 *buf;
0966     int i, j = 0;
0967     unsigned long num_regs, regdump_len, max_reg_offset;
0968     static const struct reg_hole {
0969         u32 start;
0970         u32 end;
0971     } reg_hole_list[] = {
0972         {0x0200, 0x07fc},
0973         {0x0c00, 0x0ffc},
0974         {0x2000, 0x3ffc},
0975         {0x4100, 0x6ffc},
0976         {0x705c, 0x7ffc},
0977         {0x0000, 0x0000}
0978     };
0979 
0980     max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x8800 : 0xb500;
0981     num_regs = max_reg_offset / 4 + 1;
0982     regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
0983     buf = vmalloc(regdump_len);
0984     if (!buf)
0985         return -ENOMEM;
0986 
0987     ath9k_ps_wakeup(sc);
0988     for (i = 0; i < num_regs; i++) {
0989         if (reg_hole_list[j].start == i << 2) {
0990             i = reg_hole_list[j].end >> 2;
0991             j++;
0992             continue;
0993         }
0994 
0995         len += scnprintf(buf + len, regdump_len - len,
0996             "0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
0997     }
0998     ath9k_ps_restore(sc);
0999 
1000     file->private_data = buf;
1001 
1002     return 0;
1003 }
1004 
1005 static const struct file_operations fops_regdump = {
1006     .open = open_file_regdump,
1007     .read = ath9k_debugfs_read_buf,
1008     .release = ath9k_debugfs_release_buf,
1009     .owner = THIS_MODULE,
1010     .llseek = default_llseek,/* read accesses f_pos */
1011 };
1012 
1013 static int read_file_dump_nfcal(struct seq_file *file, void *data)
1014 {
1015     struct ieee80211_hw *hw = dev_get_drvdata(file->private);
1016     struct ath_softc *sc = hw->priv;
1017     struct ath_hw *ah = sc->sc_ah;
1018     struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
1019     struct ath_common *common = ath9k_hw_common(ah);
1020     struct ieee80211_conf *conf = &common->hw->conf;
1021     u32 i, j;
1022     u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
1023     u8 nread;
1024 
1025     seq_printf(file, "Channel Noise Floor : %d\n", ah->noise);
1026     seq_puts(file, "Chain | privNF | # Readings | NF Readings\n");
1027     for (i = 0; i < NUM_NF_READINGS; i++) {
1028         if (!(chainmask & (1 << i)) ||
1029             ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
1030             continue;
1031 
1032         nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
1033         seq_printf(file, " %d\t %d\t %d\t\t", i, h[i].privNF, nread);
1034         for (j = 0; j < nread; j++)
1035             seq_printf(file, " %d", h[i].nfCalBuffer[j]);
1036         seq_puts(file, "\n");
1037     }
1038 
1039     return 0;
1040 }
1041 
1042 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1043 static ssize_t read_file_btcoex(struct file *file, char __user *user_buf,
1044                 size_t count, loff_t *ppos)
1045 {
1046     struct ath_softc *sc = file->private_data;
1047     u32 len = 0, size = 1500;
1048     char *buf;
1049     size_t retval;
1050 
1051     buf = kzalloc(size, GFP_KERNEL);
1052     if (buf == NULL)
1053         return -ENOMEM;
1054 
1055     if (!sc->sc_ah->common.btcoex_enabled) {
1056         len = scnprintf(buf, size, "%s\n",
1057                 "BTCOEX is disabled");
1058         goto exit;
1059     }
1060 
1061     len = ath9k_dump_btcoex(sc, buf, size);
1062 exit:
1063     retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1064     kfree(buf);
1065 
1066     return retval;
1067 }
1068 
1069 static const struct file_operations fops_btcoex = {
1070     .read = read_file_btcoex,
1071     .open = simple_open,
1072     .owner = THIS_MODULE,
1073     .llseek = default_llseek,
1074 };
1075 #endif
1076 
1077 #ifdef CONFIG_ATH9K_DYNACK
1078 static ssize_t read_file_ackto(struct file *file, char __user *user_buf,
1079                    size_t count, loff_t *ppos)
1080 {
1081     struct ath_softc *sc = file->private_data;
1082     struct ath_hw *ah = sc->sc_ah;
1083     char buf[32];
1084     unsigned int len;
1085 
1086     len = sprintf(buf, "%u %c\n", ah->dynack.ackto,
1087               (ah->dynack.enabled) ? 'A' : 'S');
1088 
1089     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1090 }
1091 
1092 static const struct file_operations fops_ackto = {
1093     .read = read_file_ackto,
1094     .open = simple_open,
1095     .owner = THIS_MODULE,
1096     .llseek = default_llseek,
1097 };
1098 #endif
1099 
1100 #ifdef CONFIG_ATH9K_WOW
1101 
1102 static ssize_t read_file_wow(struct file *file, char __user *user_buf,
1103                  size_t count, loff_t *ppos)
1104 {
1105     struct ath_softc *sc = file->private_data;
1106     unsigned int len = 0, size = 32;
1107     ssize_t retval;
1108     char *buf;
1109 
1110     buf = kzalloc(size, GFP_KERNEL);
1111     if (!buf)
1112         return -ENOMEM;
1113 
1114     len += scnprintf(buf + len, size - len, "WOW: %s\n",
1115              sc->force_wow ? "ENABLED" : "DISABLED");
1116 
1117     if (len > size)
1118         len = size;
1119 
1120     retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1121     kfree(buf);
1122 
1123     return retval;
1124 }
1125 
1126 static ssize_t write_file_wow(struct file *file, const char __user *user_buf,
1127                   size_t count, loff_t *ppos)
1128 {
1129     struct ath_softc *sc = file->private_data;
1130     unsigned long val;
1131     char buf[32];
1132     ssize_t len;
1133 
1134     len = min(count, sizeof(buf) - 1);
1135     if (copy_from_user(buf, user_buf, len))
1136         return -EFAULT;
1137 
1138     buf[len] = '\0';
1139     if (kstrtoul(buf, 0, &val))
1140         return -EINVAL;
1141 
1142     if (val != 1)
1143         return -EINVAL;
1144 
1145     if (!sc->force_wow) {
1146         sc->force_wow = true;
1147         ath9k_init_wow(sc->hw);
1148     }
1149 
1150     return count;
1151 }
1152 
1153 static const struct file_operations fops_wow = {
1154     .read = read_file_wow,
1155     .write = write_file_wow,
1156     .open = simple_open,
1157     .owner = THIS_MODULE,
1158     .llseek = default_llseek,
1159 };
1160 
1161 #endif
1162 
1163 static ssize_t read_file_tpc(struct file *file, char __user *user_buf,
1164                  size_t count, loff_t *ppos)
1165 {
1166     struct ath_softc *sc = file->private_data;
1167     struct ath_hw *ah = sc->sc_ah;
1168     unsigned int len = 0, size = 32;
1169     ssize_t retval;
1170     char *buf;
1171 
1172     buf = kzalloc(size, GFP_KERNEL);
1173     if (!buf)
1174         return -ENOMEM;
1175 
1176     len += scnprintf(buf + len, size - len, "%s\n",
1177              ah->tpc_enabled ? "ENABLED" : "DISABLED");
1178 
1179     if (len > size)
1180         len = size;
1181 
1182     retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1183     kfree(buf);
1184 
1185     return retval;
1186 }
1187 
1188 static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
1189                   size_t count, loff_t *ppos)
1190 {
1191     struct ath_softc *sc = file->private_data;
1192     struct ath_hw *ah = sc->sc_ah;
1193     unsigned long val;
1194     char buf[32];
1195     ssize_t len;
1196     bool tpc_enabled;
1197 
1198     len = min(count, sizeof(buf) - 1);
1199     if (copy_from_user(buf, user_buf, len))
1200         return -EFAULT;
1201 
1202     buf[len] = '\0';
1203     if (kstrtoul(buf, 0, &val))
1204         return -EINVAL;
1205 
1206     if (val > 1)
1207         return -EINVAL;
1208 
1209     tpc_enabled = !!val;
1210 
1211     if (tpc_enabled != ah->tpc_enabled) {
1212         ah->tpc_enabled = tpc_enabled;
1213 
1214         mutex_lock(&sc->mutex);
1215         ath9k_set_txpower(sc, NULL);
1216         mutex_unlock(&sc->mutex);
1217     }
1218 
1219     return count;
1220 }
1221 
1222 static const struct file_operations fops_tpc = {
1223     .read = read_file_tpc,
1224     .write = write_file_tpc,
1225     .open = simple_open,
1226     .owner = THIS_MODULE,
1227     .llseek = default_llseek,
1228 };
1229 
1230 static ssize_t read_file_nf_override(struct file *file,
1231                      char __user *user_buf,
1232                      size_t count, loff_t *ppos)
1233 {
1234     struct ath_softc *sc = file->private_data;
1235     struct ath_hw *ah = sc->sc_ah;
1236     char buf[32];
1237     unsigned int len;
1238 
1239     if (ah->nf_override == 0)
1240         len = sprintf(buf, "off\n");
1241     else
1242         len = sprintf(buf, "%d\n", ah->nf_override);
1243 
1244     return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1245 }
1246 
1247 static ssize_t write_file_nf_override(struct file *file,
1248                       const char __user *user_buf,
1249                       size_t count, loff_t *ppos)
1250 {
1251     struct ath_softc *sc = file->private_data;
1252     struct ath_hw *ah = sc->sc_ah;
1253     long val;
1254     char buf[32];
1255     ssize_t len;
1256 
1257     len = min(count, sizeof(buf) - 1);
1258     if (copy_from_user(buf, user_buf, len))
1259         return -EFAULT;
1260 
1261     buf[len] = '\0';
1262     if (strncmp("off", buf, 3) == 0)
1263         val = 0;
1264     else if (kstrtol(buf, 0, &val))
1265         return -EINVAL;
1266 
1267     if (val > 0)
1268         return -EINVAL;
1269 
1270     if (val < -120)
1271         return -EINVAL;
1272 
1273     ah->nf_override = val;
1274 
1275     if (ah->curchan) {
1276         ath9k_ps_wakeup(sc);
1277         ath9k_hw_loadnf(ah, ah->curchan);
1278         ath9k_ps_restore(sc);
1279     }
1280 
1281     return count;
1282 }
1283 
1284 static const struct file_operations fops_nf_override = {
1285     .read = read_file_nf_override,
1286     .write = write_file_nf_override,
1287     .open = simple_open,
1288     .owner = THIS_MODULE,
1289     .llseek = default_llseek,
1290 };
1291 
1292 /* Ethtool support for get-stats */
1293 
1294 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1295 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1296     "tx_pkts_nic",
1297     "tx_bytes_nic",
1298     "rx_pkts_nic",
1299     "rx_bytes_nic",
1300     AMKSTR(d_tx_pkts),
1301     AMKSTR(d_tx_bytes),
1302     AMKSTR(d_tx_mpdus_queued),
1303     AMKSTR(d_tx_mpdus_completed),
1304     AMKSTR(d_tx_mpdu_xretries),
1305     AMKSTR(d_tx_aggregates),
1306     AMKSTR(d_tx_ampdus_queued_hw),
1307     AMKSTR(d_tx_ampdus_completed),
1308     AMKSTR(d_tx_ampdu_retries),
1309     AMKSTR(d_tx_ampdu_xretries),
1310     AMKSTR(d_tx_fifo_underrun),
1311     AMKSTR(d_tx_op_exceeded),
1312     AMKSTR(d_tx_timer_expiry),
1313     AMKSTR(d_tx_desc_cfg_err),
1314     AMKSTR(d_tx_data_underrun),
1315     AMKSTR(d_tx_delim_underrun),
1316     "d_rx_crc_err",
1317     "d_rx_decrypt_crc_err",
1318     "d_rx_phy_err",
1319     "d_rx_mic_err",
1320     "d_rx_pre_delim_crc_err",
1321     "d_rx_post_delim_crc_err",
1322     "d_rx_decrypt_busy_err",
1323 
1324     "d_rx_phyerr_radar",
1325     "d_rx_phyerr_ofdm_timing",
1326     "d_rx_phyerr_cck_timing",
1327 
1328 };
1329 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1330 
1331 void ath9k_get_et_strings(struct ieee80211_hw *hw,
1332               struct ieee80211_vif *vif,
1333               u32 sset, u8 *data)
1334 {
1335     if (sset == ETH_SS_STATS)
1336         memcpy(data, *ath9k_gstrings_stats,
1337                sizeof(ath9k_gstrings_stats));
1338 }
1339 
1340 int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1341                 struct ieee80211_vif *vif, int sset)
1342 {
1343     if (sset == ETH_SS_STATS)
1344         return ATH9K_SSTATS_LEN;
1345     return 0;
1346 }
1347 
1348 #define AWDATA(elem)                            \
1349     do {                                \
1350         data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].elem; \
1351         data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].elem; \
1352         data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].elem; \
1353         data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].elem; \
1354     } while (0)
1355 
1356 #define AWDATA_RX(elem)                     \
1357     do {                            \
1358         data[i++] = sc->debug.stats.rxstats.elem;   \
1359     } while (0)
1360 
1361 void ath9k_get_et_stats(struct ieee80211_hw *hw,
1362             struct ieee80211_vif *vif,
1363             struct ethtool_stats *stats, u64 *data)
1364 {
1365     struct ath_softc *sc = hw->priv;
1366     int i = 0;
1367 
1368     data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_pkts_all +
1369              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_pkts_all +
1370              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_pkts_all +
1371              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_pkts_all);
1372     data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_bytes_all +
1373              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_bytes_all +
1374              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_bytes_all +
1375              sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_bytes_all);
1376     AWDATA_RX(rx_pkts_all);
1377     AWDATA_RX(rx_bytes_all);
1378 
1379     AWDATA(tx_pkts_all);
1380     AWDATA(tx_bytes_all);
1381     AWDATA(queued);
1382     AWDATA(completed);
1383     AWDATA(xretries);
1384     AWDATA(a_aggr);
1385     AWDATA(a_queued_hw);
1386     AWDATA(a_completed);
1387     AWDATA(a_retries);
1388     AWDATA(a_xretries);
1389     AWDATA(fifo_underrun);
1390     AWDATA(xtxop);
1391     AWDATA(timer_exp);
1392     AWDATA(desc_cfg_err);
1393     AWDATA(data_underrun);
1394     AWDATA(delim_underrun);
1395 
1396     AWDATA_RX(crc_err);
1397     AWDATA_RX(decrypt_crc_err);
1398     AWDATA_RX(phy_err);
1399     AWDATA_RX(mic_err);
1400     AWDATA_RX(pre_delim_crc_err);
1401     AWDATA_RX(post_delim_crc_err);
1402     AWDATA_RX(decrypt_busy_err);
1403 
1404     AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
1405     AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
1406     AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
1407 
1408     WARN_ON(i != ATH9K_SSTATS_LEN);
1409 }
1410 
1411 void ath9k_deinit_debug(struct ath_softc *sc)
1412 {
1413     ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
1414 }
1415 
1416 int ath9k_init_debug(struct ath_hw *ah)
1417 {
1418     struct ath_common *common = ath9k_hw_common(ah);
1419     struct ath_softc *sc = (struct ath_softc *) common->priv;
1420 
1421     sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
1422                            sc->hw->wiphy->debugfsdir);
1423     if (!sc->debug.debugfs_phy)
1424         return -ENOMEM;
1425 
1426 #ifdef CONFIG_ATH_DEBUG
1427     debugfs_create_file("debug", 0600, sc->debug.debugfs_phy,
1428                 sc, &fops_debug);
1429 #endif
1430 
1431     ath9k_dfs_init_debug(sc);
1432     ath9k_tx99_init_debug(sc);
1433     ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);
1434 
1435     debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
1436                     read_file_dma);
1437     debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
1438                     read_file_interrupt);
1439     debugfs_create_devm_seqfile(sc->dev, "xmit", sc->debug.debugfs_phy,
1440                     read_file_xmit);
1441     debugfs_create_devm_seqfile(sc->dev, "queues", sc->debug.debugfs_phy,
1442                     read_file_queues);
1443     debugfs_create_devm_seqfile(sc->dev, "misc", sc->debug.debugfs_phy,
1444                     read_file_misc);
1445     debugfs_create_file("reset", 0600, sc->debug.debugfs_phy,
1446                 sc, &fops_reset);
1447 
1448     ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1449     ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
1450 
1451     debugfs_create_u8("rx_chainmask", 0400, sc->debug.debugfs_phy,
1452               &ah->rxchainmask);
1453     debugfs_create_u8("tx_chainmask", 0400, sc->debug.debugfs_phy,
1454               &ah->txchainmask);
1455     debugfs_create_file("ani", 0600,
1456                 sc->debug.debugfs_phy, sc, &fops_ani);
1457     debugfs_create_bool("paprd", 0600, sc->debug.debugfs_phy,
1458                 &sc->sc_ah->config.enable_paprd);
1459     debugfs_create_file("regidx", 0600, sc->debug.debugfs_phy,
1460                 sc, &fops_regidx);
1461     debugfs_create_file("regval", 0600, sc->debug.debugfs_phy,
1462                 sc, &fops_regval);
1463     debugfs_create_bool("ignore_extcca", 0600,
1464                 sc->debug.debugfs_phy,
1465                 &ah->config.cwm_ignore_extcca);
1466     debugfs_create_file("regdump", 0400, sc->debug.debugfs_phy, sc,
1467                 &fops_regdump);
1468     debugfs_create_devm_seqfile(sc->dev, "dump_nfcal",
1469                     sc->debug.debugfs_phy,
1470                     read_file_dump_nfcal);
1471 
1472     ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1473     ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
1474 
1475     debugfs_create_u32("gpio_mask", 0600,
1476                sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
1477     debugfs_create_u32("gpio_val", 0600,
1478                sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
1479     debugfs_create_file("antenna_diversity", 0400,
1480                 sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
1481 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
1482     debugfs_create_file("bt_ant_diversity", 0600,
1483                 sc->debug.debugfs_phy, sc, &fops_bt_ant_diversity);
1484     debugfs_create_file("btcoex", 0400, sc->debug.debugfs_phy, sc,
1485                 &fops_btcoex);
1486 #endif
1487 
1488 #ifdef CONFIG_ATH9K_WOW
1489     debugfs_create_file("wow", 0600, sc->debug.debugfs_phy, sc, &fops_wow);
1490 #endif
1491 
1492 #ifdef CONFIG_ATH9K_DYNACK
1493     debugfs_create_file("ack_to", 0400, sc->debug.debugfs_phy,
1494                 sc, &fops_ackto);
1495 #endif
1496     debugfs_create_file("tpc", 0600, sc->debug.debugfs_phy, sc, &fops_tpc);
1497 
1498     debugfs_create_file("nf_override", 0600,
1499                 sc->debug.debugfs_phy, sc, &fops_nf_override);
1500 
1501     return 0;
1502 }
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