Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
168 strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
169 strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
170 strlcpy(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{
251 struct qcaspi *qca = netdev_priv(dev);
252
253 ring->rx_max_pending = 4;
254 ring->tx_max_pending = TX_RING_MAX_LEN;
255 ring->rx_pending = 4;
256 ring->tx_pending = qca->txr.count;
257}
258
259static int
260qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
261{
262 const struct net_device_ops *ops = dev->netdev_ops;
263 struct qcaspi *qca = netdev_priv(dev);
264
265 if ((ring->rx_pending) ||
266 (ring->rx_mini_pending) ||
267 (ring->rx_jumbo_pending))
268 return -EINVAL;
269
270 if (netif_running(dev))
271 ops->ndo_stop(dev);
272
273 qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
274 qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
275
276 if (netif_running(dev))
277 ops->ndo_open(dev);
278
279 return 0;
280}
281
282static const struct ethtool_ops qcaspi_ethtool_ops = {
283 .get_drvinfo = qcaspi_get_drvinfo,
284 .get_link = ethtool_op_get_link,
285 .get_ethtool_stats = qcaspi_get_ethtool_stats,
286 .get_strings = qcaspi_get_strings,
287 .get_sset_count = qcaspi_get_sset_count,
288 .get_regs_len = qcaspi_get_regs_len,
289 .get_regs = qcaspi_get_regs,
290 .get_ringparam = qcaspi_get_ringparam,
291 .set_ringparam = qcaspi_set_ringparam,
292 .get_link_ksettings = qcaspi_get_link_ksettings,
293};
294
295void qcaspi_set_ethtool_ops(struct net_device *dev)
296{
297 dev->ethtool_ops = &qcaspi_ethtool_ops;
298}