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1/*
2 * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
3 * Copyright (c) 2014, I2SE GmbH
4 *
5 * Permission to use, copy, modify, and/or distribute this software
6 * for any purpose with or without fee is hereby granted, provided
7 * that the above copyright notice and this permission notice appear
8 * in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
13 * THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
14 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
16 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
17 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* This file contains debugging routines for use in the QCA7K driver.
21 */
22
23#include <linux/debugfs.h>
24#include <linux/ethtool.h>
25#include <linux/seq_file.h>
26#include <linux/types.h>
27
28#include "qca_7k.h"
29#include "qca_debug.h"
30
31#define QCASPI_MAX_REGS 0x20
32
33#define QCASPI_RX_MAX_FRAMES 4
34
35static const u16 qcaspi_spi_regs[] = {
36 SPI_REG_BFR_SIZE,
37 SPI_REG_WRBUF_SPC_AVA,
38 SPI_REG_RDBUF_BYTE_AVA,
39 SPI_REG_SPI_CONFIG,
40 SPI_REG_SPI_STATUS,
41 SPI_REG_INTR_CAUSE,
42 SPI_REG_INTR_ENABLE,
43 SPI_REG_RDBUF_WATERMARK,
44 SPI_REG_WRBUF_WATERMARK,
45 SPI_REG_SIGNATURE,
46 SPI_REG_ACTION_CTRL
47};
48
49/* The order of these strings must match the order of the fields in
50 * struct qcaspi_stats
51 * See qca_spi.h
52 */
53static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
54 "Triggered resets",
55 "Device resets",
56 "Reset timeouts",
57 "Read errors",
58 "Write errors",
59 "Read buffer errors",
60 "Write buffer errors",
61 "Out of memory",
62 "Write buffer misses",
63 "Transmit ring full",
64 "SPI errors",
65 "Write verify errors",
66 "Buffer available errors",
67 "Bad signature",
68};
69
70#ifdef CONFIG_DEBUG_FS
71
72static int
73qcaspi_info_show(struct seq_file *s, void *what)
74{
75 struct qcaspi *qca = s->private;
76
77 seq_printf(s, "RX buffer size : %lu\n",
78 (unsigned long)qca->buffer_size);
79
80 seq_puts(s, "TX ring state : ");
81
82 if (qca->txr.skb[qca->txr.head] == NULL)
83 seq_puts(s, "empty");
84 else if (qca->txr.skb[qca->txr.tail])
85 seq_puts(s, "full");
86 else
87 seq_puts(s, "in use");
88
89 seq_puts(s, "\n");
90
91 seq_printf(s, "TX ring size : %u\n",
92 qca->txr.size);
93
94 seq_printf(s, "Sync state : %u (",
95 (unsigned int)qca->sync);
96 switch (qca->sync) {
97 case QCASPI_SYNC_UNKNOWN:
98 seq_puts(s, "QCASPI_SYNC_UNKNOWN");
99 break;
100 case QCASPI_SYNC_RESET:
101 seq_puts(s, "QCASPI_SYNC_RESET");
102 break;
103 case QCASPI_SYNC_READY:
104 seq_puts(s, "QCASPI_SYNC_READY");
105 break;
106 default:
107 seq_puts(s, "INVALID");
108 break;
109 }
110 seq_puts(s, ")\n");
111
112 seq_printf(s, "IRQ : %d\n",
113 qca->spi_dev->irq);
114 seq_printf(s, "INTR REQ : %u\n",
115 qca->intr_req);
116 seq_printf(s, "INTR SVC : %u\n",
117 qca->intr_svc);
118
119 seq_printf(s, "SPI max speed : %lu\n",
120 (unsigned long)qca->spi_dev->max_speed_hz);
121 seq_printf(s, "SPI mode : %x\n",
122 qca->spi_dev->mode);
123 seq_printf(s, "SPI chip select : %u\n",
124 (unsigned int)spi_get_chipselect(qca->spi_dev, 0));
125 seq_printf(s, "SPI legacy mode : %u\n",
126 (unsigned int)qca->legacy_mode);
127 seq_printf(s, "SPI burst length : %u\n",
128 (unsigned int)qca->burst_len);
129
130 return 0;
131}
132DEFINE_SHOW_ATTRIBUTE(qcaspi_info);
133
134void
135qcaspi_init_device_debugfs(struct qcaspi *qca)
136{
137 qca->device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev),
138 NULL);
139
140 debugfs_create_file("info", S_IFREG | 0444, qca->device_root, qca,
141 &qcaspi_info_fops);
142}
143
144void
145qcaspi_remove_device_debugfs(struct qcaspi *qca)
146{
147 debugfs_remove_recursive(qca->device_root);
148}
149
150#else /* CONFIG_DEBUG_FS */
151
152void
153qcaspi_init_device_debugfs(struct qcaspi *qca)
154{
155}
156
157void
158qcaspi_remove_device_debugfs(struct qcaspi *qca)
159{
160}
161
162#endif
163
164static void
165qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
166{
167 struct qcaspi *qca = netdev_priv(dev);
168
169 strscpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
170 strscpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
171 strscpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
172 strscpy(p->bus_info, dev_name(&qca->spi_dev->dev),
173 sizeof(p->bus_info));
174}
175
176static int
177qcaspi_get_link_ksettings(struct net_device *dev,
178 struct ethtool_link_ksettings *cmd)
179{
180 ethtool_link_ksettings_zero_link_mode(cmd, supported);
181 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
182
183 cmd->base.speed = SPEED_10;
184 cmd->base.duplex = DUPLEX_HALF;
185 cmd->base.port = PORT_OTHER;
186 cmd->base.autoneg = AUTONEG_DISABLE;
187
188 return 0;
189}
190
191static void
192qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
193{
194 struct qcaspi *qca = netdev_priv(dev);
195 struct qcaspi_stats *st = &qca->stats;
196
197 memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
198}
199
200static void
201qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
202{
203 switch (stringset) {
204 case ETH_SS_STATS:
205 memcpy(buf, &qcaspi_gstrings_stats,
206 sizeof(qcaspi_gstrings_stats));
207 break;
208 default:
209 WARN_ON(1);
210 break;
211 }
212}
213
214static int
215qcaspi_get_sset_count(struct net_device *dev, int sset)
216{
217 switch (sset) {
218 case ETH_SS_STATS:
219 return ARRAY_SIZE(qcaspi_gstrings_stats);
220 default:
221 return -EINVAL;
222 }
223}
224
225static int
226qcaspi_get_regs_len(struct net_device *dev)
227{
228 return sizeof(u32) * QCASPI_MAX_REGS;
229}
230
231static void
232qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
233{
234 struct qcaspi *qca = netdev_priv(dev);
235 u32 *regs_buff = p;
236 unsigned int i;
237
238 regs->version = 1;
239 memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
240
241 for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
242 u16 offset, value;
243
244 qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
245 offset = qcaspi_spi_regs[i] >> 8;
246 regs_buff[offset] = value;
247 }
248}
249
250static void
251qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
252 struct kernel_ethtool_ringparam *kernel_ring,
253 struct netlink_ext_ack *extack)
254{
255 struct qcaspi *qca = netdev_priv(dev);
256
257 ring->rx_max_pending = QCASPI_RX_MAX_FRAMES;
258 ring->tx_max_pending = TX_RING_MAX_LEN;
259 ring->rx_pending = QCASPI_RX_MAX_FRAMES;
260 ring->tx_pending = qca->txr.count;
261}
262
263static int
264qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
265 struct kernel_ethtool_ringparam *kernel_ring,
266 struct netlink_ext_ack *extack)
267{
268 struct qcaspi *qca = netdev_priv(dev);
269
270 if (ring->rx_pending != QCASPI_RX_MAX_FRAMES ||
271 (ring->rx_mini_pending) ||
272 (ring->rx_jumbo_pending))
273 return -EINVAL;
274
275 if (qca->spi_thread)
276 kthread_park(qca->spi_thread);
277
278 qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
279 qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
280
281 if (qca->spi_thread)
282 kthread_unpark(qca->spi_thread);
283
284 return 0;
285}
286
287static const struct ethtool_ops qcaspi_ethtool_ops = {
288 .get_drvinfo = qcaspi_get_drvinfo,
289 .get_link = ethtool_op_get_link,
290 .get_ethtool_stats = qcaspi_get_ethtool_stats,
291 .get_strings = qcaspi_get_strings,
292 .get_sset_count = qcaspi_get_sset_count,
293 .get_regs_len = qcaspi_get_regs_len,
294 .get_regs = qcaspi_get_regs,
295 .get_ringparam = qcaspi_get_ringparam,
296 .set_ringparam = qcaspi_set_ringparam,
297 .get_link_ksettings = qcaspi_get_link_ksettings,
298};
299
300void qcaspi_set_ethtool_ops(struct net_device *dev)
301{
302 dev->ethtool_ops = &qcaspi_ethtool_ops;
303}
1/*
2 * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
3 * Copyright (c) 2014, I2SE GmbH
4 *
5 * Permission to use, copy, modify, and/or distribute this software
6 * for any purpose with or without fee is hereby granted, provided
7 * that the above copyright notice and this permission notice appear
8 * in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
13 * THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
14 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
16 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
17 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* This file contains debugging routines for use in the QCA7K driver.
21 */
22
23#include <linux/debugfs.h>
24#include <linux/ethtool.h>
25#include <linux/seq_file.h>
26#include <linux/types.h>
27
28#include "qca_7k.h"
29#include "qca_debug.h"
30
31#define QCASPI_MAX_REGS 0x20
32
33static const u16 qcaspi_spi_regs[] = {
34 SPI_REG_BFR_SIZE,
35 SPI_REG_WRBUF_SPC_AVA,
36 SPI_REG_RDBUF_BYTE_AVA,
37 SPI_REG_SPI_CONFIG,
38 SPI_REG_SPI_STATUS,
39 SPI_REG_INTR_CAUSE,
40 SPI_REG_INTR_ENABLE,
41 SPI_REG_RDBUF_WATERMARK,
42 SPI_REG_WRBUF_WATERMARK,
43 SPI_REG_SIGNATURE,
44 SPI_REG_ACTION_CTRL
45};
46
47/* The order of these strings must match the order of the fields in
48 * struct qcaspi_stats
49 * See qca_spi.h
50 */
51static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
52 "Triggered resets",
53 "Device resets",
54 "Reset timeouts",
55 "Read errors",
56 "Write errors",
57 "Read buffer errors",
58 "Write buffer errors",
59 "Out of memory",
60 "Write buffer misses",
61 "Transmit ring full",
62 "SPI errors",
63 "Write verify errors",
64 "Buffer available errors",
65};
66
67#ifdef CONFIG_DEBUG_FS
68
69static int
70qcaspi_info_show(struct seq_file *s, void *what)
71{
72 struct qcaspi *qca = s->private;
73
74 seq_printf(s, "RX buffer size : %lu\n",
75 (unsigned long)qca->buffer_size);
76
77 seq_puts(s, "TX ring state : ");
78
79 if (qca->txr.skb[qca->txr.head] == NULL)
80 seq_puts(s, "empty");
81 else if (qca->txr.skb[qca->txr.tail])
82 seq_puts(s, "full");
83 else
84 seq_puts(s, "in use");
85
86 seq_puts(s, "\n");
87
88 seq_printf(s, "TX ring size : %u\n",
89 qca->txr.size);
90
91 seq_printf(s, "Sync state : %u (",
92 (unsigned int)qca->sync);
93 switch (qca->sync) {
94 case QCASPI_SYNC_UNKNOWN:
95 seq_puts(s, "QCASPI_SYNC_UNKNOWN");
96 break;
97 case QCASPI_SYNC_RESET:
98 seq_puts(s, "QCASPI_SYNC_RESET");
99 break;
100 case QCASPI_SYNC_READY:
101 seq_puts(s, "QCASPI_SYNC_READY");
102 break;
103 default:
104 seq_puts(s, "INVALID");
105 break;
106 }
107 seq_puts(s, ")\n");
108
109 seq_printf(s, "IRQ : %d\n",
110 qca->spi_dev->irq);
111 seq_printf(s, "INTR REQ : %u\n",
112 qca->intr_req);
113 seq_printf(s, "INTR SVC : %u\n",
114 qca->intr_svc);
115
116 seq_printf(s, "SPI max speed : %lu\n",
117 (unsigned long)qca->spi_dev->max_speed_hz);
118 seq_printf(s, "SPI mode : %x\n",
119 qca->spi_dev->mode);
120 seq_printf(s, "SPI chip select : %u\n",
121 (unsigned int)qca->spi_dev->chip_select);
122 seq_printf(s, "SPI legacy mode : %u\n",
123 (unsigned int)qca->legacy_mode);
124 seq_printf(s, "SPI burst length : %u\n",
125 (unsigned int)qca->burst_len);
126
127 return 0;
128}
129DEFINE_SHOW_ATTRIBUTE(qcaspi_info);
130
131void
132qcaspi_init_device_debugfs(struct qcaspi *qca)
133{
134 qca->device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev),
135 NULL);
136
137 debugfs_create_file("info", S_IFREG | 0444, qca->device_root, qca,
138 &qcaspi_info_fops);
139}
140
141void
142qcaspi_remove_device_debugfs(struct qcaspi *qca)
143{
144 debugfs_remove_recursive(qca->device_root);
145}
146
147#else /* CONFIG_DEBUG_FS */
148
149void
150qcaspi_init_device_debugfs(struct qcaspi *qca)
151{
152}
153
154void
155qcaspi_remove_device_debugfs(struct qcaspi *qca)
156{
157}
158
159#endif
160
161static void
162qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
163{
164 struct qcaspi *qca = netdev_priv(dev);
165
166 strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
167 strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
168 strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
169 strlcpy(p->bus_info, dev_name(&qca->spi_dev->dev),
170 sizeof(p->bus_info));
171}
172
173static int
174qcaspi_get_link_ksettings(struct net_device *dev,
175 struct ethtool_link_ksettings *cmd)
176{
177 ethtool_link_ksettings_zero_link_mode(cmd, supported);
178 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
179
180 cmd->base.speed = SPEED_10;
181 cmd->base.duplex = DUPLEX_HALF;
182 cmd->base.port = PORT_OTHER;
183 cmd->base.autoneg = AUTONEG_DISABLE;
184
185 return 0;
186}
187
188static void
189qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
190{
191 struct qcaspi *qca = netdev_priv(dev);
192 struct qcaspi_stats *st = &qca->stats;
193
194 memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
195}
196
197static void
198qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
199{
200 switch (stringset) {
201 case ETH_SS_STATS:
202 memcpy(buf, &qcaspi_gstrings_stats,
203 sizeof(qcaspi_gstrings_stats));
204 break;
205 default:
206 WARN_ON(1);
207 break;
208 }
209}
210
211static int
212qcaspi_get_sset_count(struct net_device *dev, int sset)
213{
214 switch (sset) {
215 case ETH_SS_STATS:
216 return ARRAY_SIZE(qcaspi_gstrings_stats);
217 default:
218 return -EINVAL;
219 }
220}
221
222static int
223qcaspi_get_regs_len(struct net_device *dev)
224{
225 return sizeof(u32) * QCASPI_MAX_REGS;
226}
227
228static void
229qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
230{
231 struct qcaspi *qca = netdev_priv(dev);
232 u32 *regs_buff = p;
233 unsigned int i;
234
235 regs->version = 1;
236 memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
237
238 for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
239 u16 offset, value;
240
241 qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
242 offset = qcaspi_spi_regs[i] >> 8;
243 regs_buff[offset] = value;
244 }
245}
246
247static void
248qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
249{
250 struct qcaspi *qca = netdev_priv(dev);
251
252 ring->rx_max_pending = 4;
253 ring->tx_max_pending = TX_RING_MAX_LEN;
254 ring->rx_pending = 4;
255 ring->tx_pending = qca->txr.count;
256}
257
258static int
259qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
260{
261 const struct net_device_ops *ops = dev->netdev_ops;
262 struct qcaspi *qca = netdev_priv(dev);
263
264 if ((ring->rx_pending) ||
265 (ring->rx_mini_pending) ||
266 (ring->rx_jumbo_pending))
267 return -EINVAL;
268
269 if (netif_running(dev))
270 ops->ndo_stop(dev);
271
272 qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
273 qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
274
275 if (netif_running(dev))
276 ops->ndo_open(dev);
277
278 return 0;
279}
280
281static const struct ethtool_ops qcaspi_ethtool_ops = {
282 .get_drvinfo = qcaspi_get_drvinfo,
283 .get_link = ethtool_op_get_link,
284 .get_ethtool_stats = qcaspi_get_ethtool_stats,
285 .get_strings = qcaspi_get_strings,
286 .get_sset_count = qcaspi_get_sset_count,
287 .get_regs_len = qcaspi_get_regs_len,
288 .get_regs = qcaspi_get_regs,
289 .get_ringparam = qcaspi_get_ringparam,
290 .set_ringparam = qcaspi_set_ringparam,
291 .get_link_ksettings = qcaspi_get_link_ksettings,
292};
293
294void qcaspi_set_ethtool_ops(struct net_device *dev)
295{
296 dev->ethtool_ops = &qcaspi_ethtool_ops;
297}