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1// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
2/*
3 * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
4 * Copyright (c) 2014, I2SE GmbH
5 */
6
7/* This file contains debugging routines for use in the QCA7K driver.
8 */
9
10#include <linux/debugfs.h>
11#include <linux/ethtool.h>
12#include <linux/seq_file.h>
13#include <linux/types.h>
14
15#include "qca_7k.h"
16#include "qca_debug.h"
17
18#define QCASPI_MAX_REGS 0x20
19
20#define QCASPI_RX_MAX_FRAMES 4
21
22static const u16 qcaspi_spi_regs[] = {
23 SPI_REG_BFR_SIZE,
24 SPI_REG_WRBUF_SPC_AVA,
25 SPI_REG_RDBUF_BYTE_AVA,
26 SPI_REG_SPI_CONFIG,
27 SPI_REG_SPI_STATUS,
28 SPI_REG_INTR_CAUSE,
29 SPI_REG_INTR_ENABLE,
30 SPI_REG_RDBUF_WATERMARK,
31 SPI_REG_WRBUF_WATERMARK,
32 SPI_REG_SIGNATURE,
33 SPI_REG_ACTION_CTRL
34};
35
36/* The order of these strings must match the order of the fields in
37 * struct qcaspi_stats
38 * See qca_spi.h
39 */
40static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
41 "Triggered resets",
42 "Device resets",
43 "Reset timeouts",
44 "Read errors",
45 "Write errors",
46 "Read buffer errors",
47 "Write buffer errors",
48 "Out of memory",
49 "Write buffer misses",
50 "Transmit ring full",
51 "SPI errors",
52 "Write verify errors",
53 "Buffer available errors",
54 "Bad signature",
55};
56
57#ifdef CONFIG_DEBUG_FS
58
59static int
60qcaspi_info_show(struct seq_file *s, void *what)
61{
62 struct qcaspi *qca = s->private;
63
64 seq_printf(s, "RX buffer size : %lu\n",
65 (unsigned long)qca->buffer_size);
66
67 seq_puts(s, "TX ring state : ");
68
69 if (qca->txr.skb[qca->txr.head] == NULL)
70 seq_puts(s, "empty");
71 else if (qca->txr.skb[qca->txr.tail])
72 seq_puts(s, "full");
73 else
74 seq_puts(s, "in use");
75
76 seq_puts(s, "\n");
77
78 seq_printf(s, "TX ring size : %u\n",
79 qca->txr.size);
80
81 seq_printf(s, "Sync state : %u (",
82 (unsigned int)qca->sync);
83 switch (qca->sync) {
84 case QCASPI_SYNC_UNKNOWN:
85 seq_puts(s, "QCASPI_SYNC_UNKNOWN");
86 break;
87 case QCASPI_SYNC_RESET:
88 seq_puts(s, "QCASPI_SYNC_RESET");
89 break;
90 case QCASPI_SYNC_READY:
91 seq_puts(s, "QCASPI_SYNC_READY");
92 break;
93 default:
94 seq_puts(s, "INVALID");
95 break;
96 }
97 seq_puts(s, ")\n");
98
99 seq_printf(s, "IRQ : %d\n",
100 qca->spi_dev->irq);
101 seq_printf(s, "FLAGS : %lx\n",
102 qca->flags);
103
104 seq_printf(s, "SPI max speed : %lu\n",
105 (unsigned long)qca->spi_dev->max_speed_hz);
106 seq_printf(s, "SPI mode : %x\n",
107 qca->spi_dev->mode);
108 seq_printf(s, "SPI chip select : %u\n",
109 (unsigned int)spi_get_chipselect(qca->spi_dev, 0));
110 seq_printf(s, "SPI legacy mode : %u\n",
111 (unsigned int)qca->legacy_mode);
112 seq_printf(s, "SPI burst length : %u\n",
113 (unsigned int)qca->burst_len);
114
115 return 0;
116}
117DEFINE_SHOW_ATTRIBUTE(qcaspi_info);
118
119void
120qcaspi_init_device_debugfs(struct qcaspi *qca)
121{
122 qca->device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev),
123 NULL);
124
125 debugfs_create_file("info", S_IFREG | 0444, qca->device_root, qca,
126 &qcaspi_info_fops);
127}
128
129void
130qcaspi_remove_device_debugfs(struct qcaspi *qca)
131{
132 debugfs_remove_recursive(qca->device_root);
133}
134
135#else /* CONFIG_DEBUG_FS */
136
137void
138qcaspi_init_device_debugfs(struct qcaspi *qca)
139{
140}
141
142void
143qcaspi_remove_device_debugfs(struct qcaspi *qca)
144{
145}
146
147#endif
148
149static void
150qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
151{
152 struct qcaspi *qca = netdev_priv(dev);
153
154 strscpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
155 strscpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
156 strscpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
157 strscpy(p->bus_info, dev_name(&qca->spi_dev->dev),
158 sizeof(p->bus_info));
159}
160
161static int
162qcaspi_get_link_ksettings(struct net_device *dev,
163 struct ethtool_link_ksettings *cmd)
164{
165 ethtool_link_ksettings_zero_link_mode(cmd, supported);
166 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
167
168 cmd->base.speed = SPEED_10;
169 cmd->base.duplex = DUPLEX_HALF;
170 cmd->base.port = PORT_OTHER;
171 cmd->base.autoneg = AUTONEG_DISABLE;
172
173 return 0;
174}
175
176static void
177qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
178{
179 struct qcaspi *qca = netdev_priv(dev);
180 struct qcaspi_stats *st = &qca->stats;
181
182 memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
183}
184
185static void
186qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
187{
188 switch (stringset) {
189 case ETH_SS_STATS:
190 memcpy(buf, &qcaspi_gstrings_stats,
191 sizeof(qcaspi_gstrings_stats));
192 break;
193 default:
194 WARN_ON(1);
195 break;
196 }
197}
198
199static int
200qcaspi_get_sset_count(struct net_device *dev, int sset)
201{
202 switch (sset) {
203 case ETH_SS_STATS:
204 return ARRAY_SIZE(qcaspi_gstrings_stats);
205 default:
206 return -EINVAL;
207 }
208}
209
210static int
211qcaspi_get_regs_len(struct net_device *dev)
212{
213 return sizeof(u32) * QCASPI_MAX_REGS;
214}
215
216static void
217qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
218{
219 struct qcaspi *qca = netdev_priv(dev);
220 u32 *regs_buff = p;
221 unsigned int i;
222
223 regs->version = 1;
224 memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
225
226 for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
227 u16 offset, value;
228
229 qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
230 offset = qcaspi_spi_regs[i] >> 8;
231 regs_buff[offset] = value;
232 }
233}
234
235static void
236qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
237 struct kernel_ethtool_ringparam *kernel_ring,
238 struct netlink_ext_ack *extack)
239{
240 struct qcaspi *qca = netdev_priv(dev);
241
242 ring->rx_max_pending = QCASPI_RX_MAX_FRAMES;
243 ring->tx_max_pending = QCASPI_TX_RING_MAX_LEN;
244 ring->rx_pending = QCASPI_RX_MAX_FRAMES;
245 ring->tx_pending = qca->txr.count;
246}
247
248static int
249qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
250 struct kernel_ethtool_ringparam *kernel_ring,
251 struct netlink_ext_ack *extack)
252{
253 struct qcaspi *qca = netdev_priv(dev);
254
255 if (ring->rx_pending != QCASPI_RX_MAX_FRAMES ||
256 (ring->rx_mini_pending) ||
257 (ring->rx_jumbo_pending))
258 return -EINVAL;
259
260 if (qca->spi_thread)
261 kthread_park(qca->spi_thread);
262
263 qca->txr.count = max_t(u32, ring->tx_pending, QCASPI_TX_RING_MIN_LEN);
264 qca->txr.count = min_t(u16, qca->txr.count, QCASPI_TX_RING_MAX_LEN);
265
266 if (qca->spi_thread)
267 kthread_unpark(qca->spi_thread);
268
269 return 0;
270}
271
272static const struct ethtool_ops qcaspi_ethtool_ops = {
273 .get_drvinfo = qcaspi_get_drvinfo,
274 .get_link = ethtool_op_get_link,
275 .get_ethtool_stats = qcaspi_get_ethtool_stats,
276 .get_strings = qcaspi_get_strings,
277 .get_sset_count = qcaspi_get_sset_count,
278 .get_regs_len = qcaspi_get_regs_len,
279 .get_regs = qcaspi_get_regs,
280 .get_ringparam = qcaspi_get_ringparam,
281 .set_ringparam = qcaspi_set_ringparam,
282 .get_link_ksettings = qcaspi_get_link_ksettings,
283};
284
285void qcaspi_set_ethtool_ops(struct net_device *dev)
286{
287 dev->ethtool_ops = &qcaspi_ethtool_ops;
288}
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 "Bad signature",
66};
67
68#ifdef CONFIG_DEBUG_FS
69
70static int
71qcaspi_info_show(struct seq_file *s, void *what)
72{
73 struct qcaspi *qca = s->private;
74
75 seq_printf(s, "RX buffer size : %lu\n",
76 (unsigned long)qca->buffer_size);
77
78 seq_puts(s, "TX ring state : ");
79
80 if (qca->txr.skb[qca->txr.head] == NULL)
81 seq_puts(s, "empty");
82 else if (qca->txr.skb[qca->txr.tail])
83 seq_puts(s, "full");
84 else
85 seq_puts(s, "in use");
86
87 seq_puts(s, "\n");
88
89 seq_printf(s, "TX ring size : %u\n",
90 qca->txr.size);
91
92 seq_printf(s, "Sync state : %u (",
93 (unsigned int)qca->sync);
94 switch (qca->sync) {
95 case QCASPI_SYNC_UNKNOWN:
96 seq_puts(s, "QCASPI_SYNC_UNKNOWN");
97 break;
98 case QCASPI_SYNC_RESET:
99 seq_puts(s, "QCASPI_SYNC_RESET");
100 break;
101 case QCASPI_SYNC_READY:
102 seq_puts(s, "QCASPI_SYNC_READY");
103 break;
104 default:
105 seq_puts(s, "INVALID");
106 break;
107 }
108 seq_puts(s, ")\n");
109
110 seq_printf(s, "IRQ : %d\n",
111 qca->spi_dev->irq);
112 seq_printf(s, "INTR REQ : %u\n",
113 qca->intr_req);
114 seq_printf(s, "INTR SVC : %u\n",
115 qca->intr_svc);
116
117 seq_printf(s, "SPI max speed : %lu\n",
118 (unsigned long)qca->spi_dev->max_speed_hz);
119 seq_printf(s, "SPI mode : %x\n",
120 qca->spi_dev->mode);
121 seq_printf(s, "SPI chip select : %u\n",
122 (unsigned int)qca->spi_dev->chip_select);
123 seq_printf(s, "SPI legacy mode : %u\n",
124 (unsigned int)qca->legacy_mode);
125 seq_printf(s, "SPI burst length : %u\n",
126 (unsigned int)qca->burst_len);
127
128 return 0;
129}
130DEFINE_SHOW_ATTRIBUTE(qcaspi_info);
131
132void
133qcaspi_init_device_debugfs(struct qcaspi *qca)
134{
135 qca->device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev),
136 NULL);
137
138 debugfs_create_file("info", S_IFREG | 0444, qca->device_root, qca,
139 &qcaspi_info_fops);
140}
141
142void
143qcaspi_remove_device_debugfs(struct qcaspi *qca)
144{
145 debugfs_remove_recursive(qca->device_root);
146}
147
148#else /* CONFIG_DEBUG_FS */
149
150void
151qcaspi_init_device_debugfs(struct qcaspi *qca)
152{
153}
154
155void
156qcaspi_remove_device_debugfs(struct qcaspi *qca)
157{
158}
159
160#endif
161
162static void
163qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
164{
165 struct qcaspi *qca = netdev_priv(dev);
166
167 strscpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
168 strscpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
169 strscpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
170 strscpy(p->bus_info, dev_name(&qca->spi_dev->dev),
171 sizeof(p->bus_info));
172}
173
174static int
175qcaspi_get_link_ksettings(struct net_device *dev,
176 struct ethtool_link_ksettings *cmd)
177{
178 ethtool_link_ksettings_zero_link_mode(cmd, supported);
179 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
180
181 cmd->base.speed = SPEED_10;
182 cmd->base.duplex = DUPLEX_HALF;
183 cmd->base.port = PORT_OTHER;
184 cmd->base.autoneg = AUTONEG_DISABLE;
185
186 return 0;
187}
188
189static void
190qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
191{
192 struct qcaspi *qca = netdev_priv(dev);
193 struct qcaspi_stats *st = &qca->stats;
194
195 memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
196}
197
198static void
199qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
200{
201 switch (stringset) {
202 case ETH_SS_STATS:
203 memcpy(buf, &qcaspi_gstrings_stats,
204 sizeof(qcaspi_gstrings_stats));
205 break;
206 default:
207 WARN_ON(1);
208 break;
209 }
210}
211
212static int
213qcaspi_get_sset_count(struct net_device *dev, int sset)
214{
215 switch (sset) {
216 case ETH_SS_STATS:
217 return ARRAY_SIZE(qcaspi_gstrings_stats);
218 default:
219 return -EINVAL;
220 }
221}
222
223static int
224qcaspi_get_regs_len(struct net_device *dev)
225{
226 return sizeof(u32) * QCASPI_MAX_REGS;
227}
228
229static void
230qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
231{
232 struct qcaspi *qca = netdev_priv(dev);
233 u32 *regs_buff = p;
234 unsigned int i;
235
236 regs->version = 1;
237 memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
238
239 for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
240 u16 offset, value;
241
242 qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
243 offset = qcaspi_spi_regs[i] >> 8;
244 regs_buff[offset] = value;
245 }
246}
247
248static void
249qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
250 struct kernel_ethtool_ringparam *kernel_ring,
251 struct netlink_ext_ack *extack)
252{
253 struct qcaspi *qca = netdev_priv(dev);
254
255 ring->rx_max_pending = 4;
256 ring->tx_max_pending = TX_RING_MAX_LEN;
257 ring->rx_pending = 4;
258 ring->tx_pending = qca->txr.count;
259}
260
261static int
262qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
263 struct kernel_ethtool_ringparam *kernel_ring,
264 struct netlink_ext_ack *extack)
265{
266 const struct net_device_ops *ops = dev->netdev_ops;
267 struct qcaspi *qca = netdev_priv(dev);
268
269 if ((ring->rx_pending) ||
270 (ring->rx_mini_pending) ||
271 (ring->rx_jumbo_pending))
272 return -EINVAL;
273
274 if (netif_running(dev))
275 ops->ndo_stop(dev);
276
277 qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
278 qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
279
280 if (netif_running(dev))
281 ops->ndo_open(dev);
282
283 return 0;
284}
285
286static const struct ethtool_ops qcaspi_ethtool_ops = {
287 .get_drvinfo = qcaspi_get_drvinfo,
288 .get_link = ethtool_op_get_link,
289 .get_ethtool_stats = qcaspi_get_ethtool_stats,
290 .get_strings = qcaspi_get_strings,
291 .get_sset_count = qcaspi_get_sset_count,
292 .get_regs_len = qcaspi_get_regs_len,
293 .get_regs = qcaspi_get_regs,
294 .get_ringparam = qcaspi_get_ringparam,
295 .set_ringparam = qcaspi_set_ringparam,
296 .get_link_ksettings = qcaspi_get_link_ksettings,
297};
298
299void qcaspi_set_ethtool_ops(struct net_device *dev)
300{
301 dev->ethtool_ops = &qcaspi_ethtool_ops;
302}