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291ab06e SW |
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 | static 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 | */ | |
51 | static 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 | }; | |
64 | ||
65 | #ifdef CONFIG_DEBUG_FS | |
66 | ||
67 | static int | |
68 | qcaspi_info_show(struct seq_file *s, void *what) | |
69 | { | |
70 | struct qcaspi *qca = s->private; | |
71 | ||
72 | seq_printf(s, "RX buffer size : %lu\n", | |
73 | (unsigned long)qca->buffer_size); | |
74 | ||
75 | seq_puts(s, "TX ring state : "); | |
76 | ||
77 | if (qca->txr.skb[qca->txr.head] == NULL) | |
78 | seq_puts(s, "empty"); | |
79 | else if (qca->txr.skb[qca->txr.tail]) | |
80 | seq_puts(s, "full"); | |
81 | else | |
82 | seq_puts(s, "in use"); | |
83 | ||
84 | seq_puts(s, "\n"); | |
85 | ||
86 | seq_printf(s, "TX ring size : %u\n", | |
87 | qca->txr.size); | |
88 | ||
89 | seq_printf(s, "Sync state : %u (", | |
90 | (unsigned int)qca->sync); | |
91 | switch (qca->sync) { | |
92 | case QCASPI_SYNC_UNKNOWN: | |
93 | seq_puts(s, "QCASPI_SYNC_UNKNOWN"); | |
94 | break; | |
95 | case QCASPI_SYNC_RESET: | |
96 | seq_puts(s, "QCASPI_SYNC_RESET"); | |
97 | break; | |
98 | case QCASPI_SYNC_READY: | |
99 | seq_puts(s, "QCASPI_SYNC_READY"); | |
100 | break; | |
101 | default: | |
102 | seq_puts(s, "INVALID"); | |
103 | break; | |
104 | } | |
105 | seq_puts(s, ")\n"); | |
106 | ||
107 | seq_printf(s, "IRQ : %d\n", | |
108 | qca->spi_dev->irq); | |
109 | seq_printf(s, "INTR REQ : %u\n", | |
110 | qca->intr_req); | |
111 | seq_printf(s, "INTR SVC : %u\n", | |
112 | qca->intr_svc); | |
113 | ||
114 | seq_printf(s, "SPI max speed : %lu\n", | |
115 | (unsigned long)qca->spi_dev->max_speed_hz); | |
116 | seq_printf(s, "SPI mode : %x\n", | |
117 | qca->spi_dev->mode); | |
118 | seq_printf(s, "SPI chip select : %u\n", | |
119 | (unsigned int)qca->spi_dev->chip_select); | |
120 | seq_printf(s, "SPI legacy mode : %u\n", | |
121 | (unsigned int)qca->legacy_mode); | |
122 | seq_printf(s, "SPI burst length : %u\n", | |
123 | (unsigned int)qca->burst_len); | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | static int | |
129 | qcaspi_info_open(struct inode *inode, struct file *file) | |
130 | { | |
131 | return single_open(file, qcaspi_info_show, inode->i_private); | |
132 | } | |
133 | ||
134 | static const struct file_operations qcaspi_info_ops = { | |
135 | .open = qcaspi_info_open, | |
136 | .read = seq_read, | |
137 | .llseek = seq_lseek, | |
138 | .release = single_release, | |
139 | }; | |
140 | ||
141 | void | |
142 | qcaspi_init_device_debugfs(struct qcaspi *qca) | |
143 | { | |
144 | struct dentry *device_root; | |
145 | ||
146 | device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev), NULL); | |
147 | qca->device_root = device_root; | |
148 | ||
149 | if (IS_ERR(device_root) || !device_root) { | |
150 | pr_warn("failed to create debugfs directory for %s\n", | |
151 | dev_name(&qca->net_dev->dev)); | |
152 | return; | |
153 | } | |
d3757ba4 | 154 | debugfs_create_file("info", S_IFREG | 0444, device_root, qca, |
291ab06e SW |
155 | &qcaspi_info_ops); |
156 | } | |
157 | ||
158 | void | |
159 | qcaspi_remove_device_debugfs(struct qcaspi *qca) | |
160 | { | |
161 | debugfs_remove_recursive(qca->device_root); | |
162 | } | |
163 | ||
164 | #else /* CONFIG_DEBUG_FS */ | |
165 | ||
166 | void | |
167 | qcaspi_init_device_debugfs(struct qcaspi *qca) | |
168 | { | |
169 | } | |
170 | ||
171 | void | |
172 | qcaspi_remove_device_debugfs(struct qcaspi *qca) | |
173 | { | |
174 | } | |
175 | ||
176 | #endif | |
177 | ||
178 | static void | |
179 | qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p) | |
180 | { | |
181 | struct qcaspi *qca = netdev_priv(dev); | |
182 | ||
183 | strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver)); | |
184 | strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version)); | |
185 | strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version)); | |
186 | strlcpy(p->bus_info, dev_name(&qca->spi_dev->dev), | |
187 | sizeof(p->bus_info)); | |
188 | } | |
189 | ||
190 | static int | |
2cf8a897 PR |
191 | qcaspi_get_link_ksettings(struct net_device *dev, |
192 | struct ethtool_link_ksettings *cmd) | |
291ab06e | 193 | { |
2cf8a897 PR |
194 | ethtool_link_ksettings_zero_link_mode(cmd, supported); |
195 | ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half); | |
196 | ||
197 | cmd->base.speed = SPEED_10; | |
198 | cmd->base.duplex = DUPLEX_HALF; | |
199 | cmd->base.port = PORT_OTHER; | |
200 | cmd->base.autoneg = AUTONEG_DISABLE; | |
291ab06e SW |
201 | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static void | |
206 | qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data) | |
207 | { | |
208 | struct qcaspi *qca = netdev_priv(dev); | |
209 | struct qcaspi_stats *st = &qca->stats; | |
210 | ||
211 | memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64)); | |
212 | } | |
213 | ||
214 | static void | |
215 | qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf) | |
216 | { | |
217 | switch (stringset) { | |
218 | case ETH_SS_STATS: | |
219 | memcpy(buf, &qcaspi_gstrings_stats, | |
220 | sizeof(qcaspi_gstrings_stats)); | |
221 | break; | |
222 | default: | |
223 | WARN_ON(1); | |
224 | break; | |
225 | } | |
226 | } | |
227 | ||
228 | static int | |
229 | qcaspi_get_sset_count(struct net_device *dev, int sset) | |
230 | { | |
231 | switch (sset) { | |
232 | case ETH_SS_STATS: | |
233 | return ARRAY_SIZE(qcaspi_gstrings_stats); | |
234 | default: | |
235 | return -EINVAL; | |
236 | } | |
237 | } | |
238 | ||
239 | static int | |
240 | qcaspi_get_regs_len(struct net_device *dev) | |
241 | { | |
242 | return sizeof(u32) * QCASPI_MAX_REGS; | |
243 | } | |
244 | ||
245 | static void | |
246 | qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p) | |
247 | { | |
248 | struct qcaspi *qca = netdev_priv(dev); | |
249 | u32 *regs_buff = p; | |
250 | unsigned int i; | |
251 | ||
252 | regs->version = 1; | |
253 | memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS); | |
254 | ||
255 | for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) { | |
256 | u16 offset, value; | |
257 | ||
258 | qcaspi_read_register(qca, qcaspi_spi_regs[i], &value); | |
259 | offset = qcaspi_spi_regs[i] >> 8; | |
260 | regs_buff[offset] = value; | |
261 | } | |
262 | } | |
263 | ||
264 | static void | |
265 | qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring) | |
266 | { | |
267 | struct qcaspi *qca = netdev_priv(dev); | |
268 | ||
269 | ring->rx_max_pending = 4; | |
270 | ring->tx_max_pending = TX_RING_MAX_LEN; | |
271 | ring->rx_pending = 4; | |
272 | ring->tx_pending = qca->txr.count; | |
273 | } | |
274 | ||
275 | static int | |
276 | qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring) | |
277 | { | |
0324e75d | 278 | const struct net_device_ops *ops = dev->netdev_ops; |
291ab06e SW |
279 | struct qcaspi *qca = netdev_priv(dev); |
280 | ||
281 | if ((ring->rx_pending) || | |
282 | (ring->rx_mini_pending) || | |
283 | (ring->rx_jumbo_pending)) | |
284 | return -EINVAL; | |
285 | ||
286 | if (netif_running(dev)) | |
0324e75d | 287 | ops->ndo_stop(dev); |
291ab06e SW |
288 | |
289 | qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN); | |
290 | qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN); | |
291 | ||
292 | if (netif_running(dev)) | |
0324e75d | 293 | ops->ndo_open(dev); |
291ab06e SW |
294 | |
295 | return 0; | |
296 | } | |
297 | ||
298 | static const struct ethtool_ops qcaspi_ethtool_ops = { | |
299 | .get_drvinfo = qcaspi_get_drvinfo, | |
300 | .get_link = ethtool_op_get_link, | |
291ab06e SW |
301 | .get_ethtool_stats = qcaspi_get_ethtool_stats, |
302 | .get_strings = qcaspi_get_strings, | |
303 | .get_sset_count = qcaspi_get_sset_count, | |
304 | .get_regs_len = qcaspi_get_regs_len, | |
305 | .get_regs = qcaspi_get_regs, | |
306 | .get_ringparam = qcaspi_get_ringparam, | |
307 | .set_ringparam = qcaspi_set_ringparam, | |
2cf8a897 | 308 | .get_link_ksettings = qcaspi_get_link_ksettings, |
291ab06e SW |
309 | }; |
310 | ||
311 | void qcaspi_set_ethtool_ops(struct net_device *dev) | |
312 | { | |
313 | dev->ethtool_ops = &qcaspi_ethtool_ops; | |
314 | } |