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 | "Write verify errors" , |
64 | "Buffer available errors" , |
65 | "Bad signature" , |
66 | }; |
67 | |
68 | #ifdef CONFIG_DEBUG_FS |
69 | |
70 | static int |
71 | qcaspi_info_show(struct seq_file *s, void *what) |
72 | { |
73 | struct qcaspi *qca = s->private; |
74 | |
75 | seq_printf(m: s, fmt: "RX buffer size : %lu\n" , |
76 | (unsigned long)qca->buffer_size); |
77 | |
78 | seq_puts(m: s, s: "TX ring state : " ); |
79 | |
80 | if (qca->txr.skb[qca->txr.head] == NULL) |
81 | seq_puts(m: s, s: "empty" ); |
82 | else if (qca->txr.skb[qca->txr.tail]) |
83 | seq_puts(m: s, s: "full" ); |
84 | else |
85 | seq_puts(m: s, s: "in use" ); |
86 | |
87 | seq_puts(m: s, s: "\n" ); |
88 | |
89 | seq_printf(m: s, fmt: "TX ring size : %u\n" , |
90 | qca->txr.size); |
91 | |
92 | seq_printf(m: s, fmt: "Sync state : %u (" , |
93 | (unsigned int)qca->sync); |
94 | switch (qca->sync) { |
95 | case QCASPI_SYNC_UNKNOWN: |
96 | seq_puts(m: s, s: "QCASPI_SYNC_UNKNOWN" ); |
97 | break; |
98 | case QCASPI_SYNC_RESET: |
99 | seq_puts(m: s, s: "QCASPI_SYNC_RESET" ); |
100 | break; |
101 | case QCASPI_SYNC_READY: |
102 | seq_puts(m: s, s: "QCASPI_SYNC_READY" ); |
103 | break; |
104 | default: |
105 | seq_puts(m: s, s: "INVALID" ); |
106 | break; |
107 | } |
108 | seq_puts(m: s, s: ")\n" ); |
109 | |
110 | seq_printf(m: s, fmt: "IRQ : %d\n" , |
111 | qca->spi_dev->irq); |
112 | seq_printf(m: s, fmt: "INTR REQ : %u\n" , |
113 | qca->intr_req); |
114 | seq_printf(m: s, fmt: "INTR SVC : %u\n" , |
115 | qca->intr_svc); |
116 | |
117 | seq_printf(m: s, fmt: "SPI max speed : %lu\n" , |
118 | (unsigned long)qca->spi_dev->max_speed_hz); |
119 | seq_printf(m: s, fmt: "SPI mode : %x\n" , |
120 | qca->spi_dev->mode); |
121 | seq_printf(m: s, fmt: "SPI chip select : %u\n" , |
122 | (unsigned int)spi_get_chipselect(spi: qca->spi_dev, idx: 0)); |
123 | seq_printf(m: s, fmt: "SPI legacy mode : %u\n" , |
124 | (unsigned int)qca->legacy_mode); |
125 | seq_printf(m: s, fmt: "SPI burst length : %u\n" , |
126 | (unsigned int)qca->burst_len); |
127 | |
128 | return 0; |
129 | } |
130 | DEFINE_SHOW_ATTRIBUTE(qcaspi_info); |
131 | |
132 | void |
133 | qcaspi_init_device_debugfs(struct qcaspi *qca) |
134 | { |
135 | qca->device_root = debugfs_create_dir(name: dev_name(dev: &qca->net_dev->dev), |
136 | NULL); |
137 | |
138 | debugfs_create_file(name: "info" , S_IFREG | 0444, parent: qca->device_root, data: qca, |
139 | fops: &qcaspi_info_fops); |
140 | } |
141 | |
142 | void |
143 | qcaspi_remove_device_debugfs(struct qcaspi *qca) |
144 | { |
145 | debugfs_remove_recursive(dentry: qca->device_root); |
146 | } |
147 | |
148 | #else /* CONFIG_DEBUG_FS */ |
149 | |
150 | void |
151 | qcaspi_init_device_debugfs(struct qcaspi *qca) |
152 | { |
153 | } |
154 | |
155 | void |
156 | qcaspi_remove_device_debugfs(struct qcaspi *qca) |
157 | { |
158 | } |
159 | |
160 | #endif |
161 | |
162 | static void |
163 | qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p) |
164 | { |
165 | struct qcaspi *qca = netdev_priv(dev); |
166 | |
167 | strscpy(p: p->driver, QCASPI_DRV_NAME, size: sizeof(p->driver)); |
168 | strscpy(p: p->version, QCASPI_DRV_VERSION, size: sizeof(p->version)); |
169 | strscpy(p: p->fw_version, q: "QCA7000" , size: sizeof(p->fw_version)); |
170 | strscpy(p: p->bus_info, q: dev_name(dev: &qca->spi_dev->dev), |
171 | size: sizeof(p->bus_info)); |
172 | } |
173 | |
174 | static int |
175 | qcaspi_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 | |
189 | static void |
190 | qcaspi_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 | |
198 | static void |
199 | qcaspi_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 | |
212 | static int |
213 | qcaspi_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 | |
223 | static int |
224 | qcaspi_get_regs_len(struct net_device *dev) |
225 | { |
226 | return sizeof(u32) * QCASPI_MAX_REGS; |
227 | } |
228 | |
229 | static void |
230 | qcaspi_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, reg: qcaspi_spi_regs[i], result: &value); |
243 | offset = qcaspi_spi_regs[i] >> 8; |
244 | regs_buff[offset] = value; |
245 | } |
246 | } |
247 | |
248 | static void |
249 | qcaspi_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 | |
261 | static int |
262 | qcaspi_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 | |
286 | static 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 | |
299 | void qcaspi_set_ethtool_ops(struct net_device *dev) |
300 | { |
301 | dev->ethtool_ops = &qcaspi_ethtool_ops; |
302 | } |
303 | |