f473b42ac5
Fixes the following reported crash:
[ 2.361127] BUG: spinlock bad magic on CPU#0, modprobe/456
[ 2.361583] lock: 0xffffa1287525b3b8, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[ 2.362250] CPU: 0 PID: 456 Comm: modprobe Not tainted 4.14.177 #5
[ 2.362751] Hardware name: HP Meep/Meep, BIOS Google_Meep.11297.75.0 06/17/2019
[ 2.363343] Call Trace:
[ 2.363552] dump_stack+0x97/0xdb
[ 2.363826] ? spin_bug+0xa6/0xb3
[ 2.364096] do_raw_spin_lock+0x6a/0x9a
[ 2.364417] mt76_dma_rx_fill+0x44/0x1de [mt76]
[ 2.364787] ? mt76_dma_kick_queue+0x18/0x18 [mt76]
[ 2.365184] mt76_dma_init+0x53/0x85 [mt76]
[ 2.365532] mt7615_dma_init+0x3d7/0x546 [mt7615e]
[ 2.365928] mt7615_register_device+0xe6/0x1a0 [mt7615e]
[ 2.366364] mt7615_mmio_probe+0x14b/0x171 [mt7615e]
[ 2.366771] mt7615_pci_probe+0x118/0x13b [mt7615e]
[ 2.367169] pci_device_probe+0xaf/0x13d
[ 2.367491] driver_probe_device+0x284/0x2ca
[ 2.367840] __driver_attach+0x7a/0x9e
[ 2.368146] ? driver_attach+0x1f/0x1f
[ 2.368451] bus_for_each_dev+0xa0/0xdb
[ 2.368765] bus_add_driver+0x132/0x204
[ 2.369078] driver_register+0x8e/0xcd
[ 2.369384] do_one_initcall+0x160/0x257
[ 2.369706] ? 0xffffffffc0240000
[ 2.369980] do_init_module+0x60/0x1bb
[ 2.370286] load_module+0x18c2/0x1a2b
[ 2.370596] ? kernel_read_file+0x141/0x1b9
[ 2.370937] ? kernel_read_file_from_fd+0x46/0x71
[ 2.371320] SyS_finit_module+0xcc/0xf0
[ 2.371636] do_syscall_64+0x6b/0xf7
[ 2.371930] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 2.372344] RIP: 0033:0x7da218ae4199
[ 2.372637] RSP: 002b:00007fffd0608398 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 2.373252] RAX: ffffffffffffffda RBX: 00005a705449df90 RCX: 00007da218ae4199
[ 2.373833] RDX: 0000000000000000 RSI: 00005a7052e73bd8 RDI: 0000000000000006
[ 2.374411] RBP: 00007fffd06083e0 R08: 0000000000000000 R09: 00005a705449d540
[ 2.374989] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
[ 2.375569] R13: 00005a705449def0 R14: 00005a7052e73bd8 R15: 0000000000000000
Reported-by: Sean Wang <sean.wang@mediatek.com>
Fixes: d3377b78ce ("mt76: add HE phy modes and hardware queue")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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*/
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#include "mt76.h"
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static int
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mt76_reg_set(void *data, u64 val)
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{
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struct mt76_dev *dev = data;
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dev->bus->wr(dev, dev->debugfs_reg, val);
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return 0;
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}
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static int
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mt76_reg_get(void *data, u64 *val)
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{
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struct mt76_dev *dev = data;
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*val = dev->bus->rr(dev, dev->debugfs_reg);
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return 0;
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}
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DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mt76_reg_get, mt76_reg_set,
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"0x%08llx\n");
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int mt76_queues_read(struct seq_file *s, void *data)
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{
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struct mt76_dev *dev = dev_get_drvdata(s->private);
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int i;
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for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++) {
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struct mt76_sw_queue *q = &dev->q_tx[i];
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if (!q->q)
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continue;
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seq_printf(s,
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"%d: queued=%d head=%d tail=%d swq_queued=%d\n",
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i, q->q->queued, q->q->head, q->q->tail,
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q->swq_queued);
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(mt76_queues_read);
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static int mt76_rx_queues_read(struct seq_file *s, void *data)
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{
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struct mt76_dev *dev = dev_get_drvdata(s->private);
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int i, queued;
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mt76_for_each_q_rx(dev, i) {
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struct mt76_queue *q = &dev->q_rx[i];
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if (!q->ndesc)
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continue;
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queued = mt76_is_usb(dev) ? q->ndesc - q->queued : q->queued;
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seq_printf(s, "%d: queued=%d head=%d tail=%d\n",
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i, queued, q->head, q->tail);
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}
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return 0;
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}
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void mt76_seq_puts_array(struct seq_file *file, const char *str,
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s8 *val, int len)
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{
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int i;
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seq_printf(file, "%10s:", str);
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for (i = 0; i < len; i++)
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seq_printf(file, " %2d", val[i]);
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seq_puts(file, "\n");
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}
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EXPORT_SYMBOL_GPL(mt76_seq_puts_array);
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static int mt76_read_rate_txpower(struct seq_file *s, void *data)
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{
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struct mt76_dev *dev = dev_get_drvdata(s->private);
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mt76_seq_puts_array(s, "CCK", dev->rate_power.cck,
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ARRAY_SIZE(dev->rate_power.cck));
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mt76_seq_puts_array(s, "OFDM", dev->rate_power.ofdm,
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ARRAY_SIZE(dev->rate_power.ofdm));
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mt76_seq_puts_array(s, "STBC", dev->rate_power.stbc,
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ARRAY_SIZE(dev->rate_power.stbc));
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mt76_seq_puts_array(s, "HT", dev->rate_power.ht,
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ARRAY_SIZE(dev->rate_power.ht));
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mt76_seq_puts_array(s, "VHT", dev->rate_power.vht,
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ARRAY_SIZE(dev->rate_power.vht));
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return 0;
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}
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struct dentry *mt76_register_debugfs(struct mt76_dev *dev)
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{
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struct dentry *dir;
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dir = debugfs_create_dir("mt76", dev->hw->wiphy->debugfsdir);
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if (!dir)
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return NULL;
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debugfs_create_u8("led_pin", 0600, dir, &dev->led_pin);
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debugfs_create_u32("regidx", 0600, dir, &dev->debugfs_reg);
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debugfs_create_file_unsafe("regval", 0600, dir, dev,
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&fops_regval);
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debugfs_create_blob("eeprom", 0400, dir, &dev->eeprom);
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if (dev->otp.data)
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debugfs_create_blob("otp", 0400, dir, &dev->otp);
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debugfs_create_devm_seqfile(dev->dev, "rate_txpower", dir,
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mt76_read_rate_txpower);
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debugfs_create_devm_seqfile(dev->dev, "rx-queues", dir,
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mt76_rx_queues_read);
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return dir;
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}
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EXPORT_SYMBOL_GPL(mt76_register_debugfs);
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