summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/qualcomm/qca_debug.c
blob: 92b6be9c44296820b758440c08131aa0eb507c03 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/*
 *   Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
 *   Copyright (c) 2014, I2SE GmbH
 *
 *   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.
 */

/*   This file contains debugging routines for use in the QCA7K driver.
 */

#include <linux/debugfs.h>
#include <linux/ethtool.h>
#include <linux/seq_file.h>
#include <linux/types.h>

#include "qca_7k.h"
#include "qca_debug.h"

#define QCASPI_MAX_REGS 0x20

static const u16 qcaspi_spi_regs[] = {
	SPI_REG_BFR_SIZE,
	SPI_REG_WRBUF_SPC_AVA,
	SPI_REG_RDBUF_BYTE_AVA,
	SPI_REG_SPI_CONFIG,
	SPI_REG_SPI_STATUS,
	SPI_REG_INTR_CAUSE,
	SPI_REG_INTR_ENABLE,
	SPI_REG_RDBUF_WATERMARK,
	SPI_REG_WRBUF_WATERMARK,
	SPI_REG_SIGNATURE,
	SPI_REG_ACTION_CTRL
};

/* The order of these strings must match the order of the fields in
 * struct qcaspi_stats
 * See qca_spi.h
 */
static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
	"Triggered resets",
	"Device resets",
	"Reset timeouts",
	"Read errors",
	"Write errors",
	"Read buffer errors",
	"Write buffer errors",
	"Out of memory",
	"Write buffer misses",
	"Transmit ring full",
	"SPI errors",
};

#ifdef CONFIG_DEBUG_FS

static int
qcaspi_info_show(struct seq_file *s, void *what)
{
	struct qcaspi *qca = s->private;

	seq_printf(s, "RX buffer size   : %lu\n",
		   (unsigned long)qca->buffer_size);

	seq_puts(s, "TX ring state    : ");

	if (qca->txr.skb[qca->txr.head] == NULL)
		seq_puts(s, "empty");
	else if (qca->txr.skb[qca->txr.tail])
		seq_puts(s, "full");
	else
		seq_puts(s, "in use");

	seq_puts(s, "\n");

	seq_printf(s, "TX ring size     : %u\n",
		   qca->txr.size);

	seq_printf(s, "Sync state       : %u (",
		   (unsigned int)qca->sync);
	switch (qca->sync) {
	case QCASPI_SYNC_UNKNOWN:
		seq_puts(s, "QCASPI_SYNC_UNKNOWN");
		break;
	case QCASPI_SYNC_RESET:
		seq_puts(s, "QCASPI_SYNC_RESET");
		break;
	case QCASPI_SYNC_READY:
		seq_puts(s, "QCASPI_SYNC_READY");
		break;
	default:
		seq_puts(s, "INVALID");
		break;
	}
	seq_puts(s, ")\n");

	seq_printf(s, "IRQ              : %d\n",
		   qca->spi_dev->irq);
	seq_printf(s, "INTR REQ         : %u\n",
		   qca->intr_req);
	seq_printf(s, "INTR SVC         : %u\n",
		   qca->intr_svc);

	seq_printf(s, "SPI max speed    : %lu\n",
		   (unsigned long)qca->spi_dev->max_speed_hz);
	seq_printf(s, "SPI mode         : %x\n",
		   qca->spi_dev->mode);
	seq_printf(s, "SPI chip select  : %u\n",
		   (unsigned int)qca->spi_dev->chip_select);
	seq_printf(s, "SPI legacy mode  : %u\n",
		   (unsigned int)qca->legacy_mode);
	seq_printf(s, "SPI burst length : %u\n",
		   (unsigned int)qca->burst_len);

	return 0;
}

static int
qcaspi_info_open(struct inode *inode, struct file *file)
{
	return single_open(file, qcaspi_info_show, inode->i_private);
}

static const struct file_operations qcaspi_info_ops = {
	.open = qcaspi_info_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

void
qcaspi_init_device_debugfs(struct qcaspi *qca)
{
	struct dentry *device_root;

	device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev), NULL);
	qca->device_root = device_root;

	if (IS_ERR(device_root) || !device_root) {
		pr_warn("failed to create debugfs directory for %s\n",
			dev_name(&qca->net_dev->dev));
		return;
	}
	debugfs_create_file("info", S_IFREG | S_IRUGO, device_root, qca,
			    &qcaspi_info_ops);
}

void
qcaspi_remove_device_debugfs(struct qcaspi *qca)
{
	debugfs_remove_recursive(qca->device_root);
}

#else /* CONFIG_DEBUG_FS */

void
qcaspi_init_device_debugfs(struct qcaspi *qca)
{
}

void
qcaspi_remove_device_debugfs(struct qcaspi *qca)
{
}

#endif

static void
qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
{
	struct qcaspi *qca = netdev_priv(dev);

	strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
	strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
	strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
	strlcpy(p->bus_info, dev_name(&qca->spi_dev->dev),
		sizeof(p->bus_info));
}

static int
qcaspi_get_link_ksettings(struct net_device *dev,
			  struct ethtool_link_ksettings *cmd)
{
	ethtool_link_ksettings_zero_link_mode(cmd, supported);
	ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);

	cmd->base.speed = SPEED_10;
	cmd->base.duplex = DUPLEX_HALF;
	cmd->base.port = PORT_OTHER;
	cmd->base.autoneg = AUTONEG_DISABLE;

	return 0;
}

static void
qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
{
	struct qcaspi *qca = netdev_priv(dev);
	struct qcaspi_stats *st = &qca->stats;

	memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
}

static void
qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
{
	switch (stringset) {
	case ETH_SS_STATS:
		memcpy(buf, &qcaspi_gstrings_stats,
		       sizeof(qcaspi_gstrings_stats));
		break;
	default:
		WARN_ON(1);
		break;
	}
}

static int
qcaspi_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return ARRAY_SIZE(qcaspi_gstrings_stats);
	default:
		return -EINVAL;
	}
}

static int
qcaspi_get_regs_len(struct net_device *dev)
{
	return sizeof(u32) * QCASPI_MAX_REGS;
}

static void
qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
{
	struct qcaspi *qca = netdev_priv(dev);
	u32 *regs_buff = p;
	unsigned int i;

	regs->version = 1;
	memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);

	for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
		u16 offset, value;

		qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
		offset = qcaspi_spi_regs[i] >> 8;
		regs_buff[offset] = value;
	}
}

static void
qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
{
	struct qcaspi *qca = netdev_priv(dev);

	ring->rx_max_pending = 4;
	ring->tx_max_pending = TX_RING_MAX_LEN;
	ring->rx_pending = 4;
	ring->tx_pending = qca->txr.count;
}

static int
qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
{
	const struct net_device_ops *ops = dev->netdev_ops;
	struct qcaspi *qca = netdev_priv(dev);

	if ((ring->rx_pending) ||
	    (ring->rx_mini_pending) ||
	    (ring->rx_jumbo_pending))
		return -EINVAL;

	if (netif_running(dev))
		ops->ndo_stop(dev);

	qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
	qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);

	if (netif_running(dev))
		ops->ndo_open(dev);

	return 0;
}

static const struct ethtool_ops qcaspi_ethtool_ops = {
	.get_drvinfo = qcaspi_get_drvinfo,
	.get_link = ethtool_op_get_link,
	.get_ethtool_stats = qcaspi_get_ethtool_stats,
	.get_strings = qcaspi_get_strings,
	.get_sset_count = qcaspi_get_sset_count,
	.get_regs_len = qcaspi_get_regs_len,
	.get_regs = qcaspi_get_regs,
	.get_ringparam = qcaspi_get_ringparam,
	.set_ringparam = qcaspi_set_ringparam,
	.get_link_ksettings = qcaspi_get_link_ksettings,
};

void qcaspi_set_ethtool_ops(struct net_device *dev)
{
	dev->ethtool_ops = &qcaspi_ethtool_ops;
}