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 | |
22 | static 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 | */ |
40 | static 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 | |
59 | static int |
60 | qcaspi_info_show(struct seq_file *s, void *what) |
61 | { |
62 | struct qcaspi *qca = s->private; |
63 | |
64 | seq_printf(m: s, fmt: "RX buffer size : %lu\n" , |
65 | (unsigned long)qca->buffer_size); |
66 | |
67 | seq_puts(m: s, s: "TX ring state : " ); |
68 | |
69 | if (qca->txr.skb[qca->txr.head] == NULL) |
70 | seq_puts(m: s, s: "empty" ); |
71 | else if (qca->txr.skb[qca->txr.tail]) |
72 | seq_puts(m: s, s: "full" ); |
73 | else |
74 | seq_puts(m: s, s: "in use" ); |
75 | |
76 | seq_puts(m: s, s: "\n" ); |
77 | |
78 | seq_printf(m: s, fmt: "TX ring size : %u\n" , |
79 | qca->txr.size); |
80 | |
81 | seq_printf(m: s, fmt: "Sync state : %u (" , |
82 | (unsigned int)qca->sync); |
83 | switch (qca->sync) { |
84 | case QCASPI_SYNC_UNKNOWN: |
85 | seq_puts(m: s, s: "QCASPI_SYNC_UNKNOWN" ); |
86 | break; |
87 | case QCASPI_SYNC_RESET: |
88 | seq_puts(m: s, s: "QCASPI_SYNC_RESET" ); |
89 | break; |
90 | case QCASPI_SYNC_READY: |
91 | seq_puts(m: s, s: "QCASPI_SYNC_READY" ); |
92 | break; |
93 | default: |
94 | seq_puts(m: s, s: "INVALID" ); |
95 | break; |
96 | } |
97 | seq_puts(m: s, s: ")\n" ); |
98 | |
99 | seq_printf(m: s, fmt: "IRQ : %d\n" , |
100 | qca->spi_dev->irq); |
101 | seq_printf(m: s, fmt: "INTR REQ : %u\n" , |
102 | qca->intr_req); |
103 | seq_printf(m: s, fmt: "INTR SVC : %u\n" , |
104 | qca->intr_svc); |
105 | |
106 | seq_printf(m: s, fmt: "SPI max speed : %lu\n" , |
107 | (unsigned long)qca->spi_dev->max_speed_hz); |
108 | seq_printf(m: s, fmt: "SPI mode : %x\n" , |
109 | qca->spi_dev->mode); |
110 | seq_printf(m: s, fmt: "SPI chip select : %u\n" , |
111 | (unsigned int)spi_get_chipselect(spi: qca->spi_dev, idx: 0)); |
112 | seq_printf(m: s, fmt: "SPI legacy mode : %u\n" , |
113 | (unsigned int)qca->legacy_mode); |
114 | seq_printf(m: s, fmt: "SPI burst length : %u\n" , |
115 | (unsigned int)qca->burst_len); |
116 | |
117 | return 0; |
118 | } |
119 | DEFINE_SHOW_ATTRIBUTE(qcaspi_info); |
120 | |
121 | void |
122 | qcaspi_init_device_debugfs(struct qcaspi *qca) |
123 | { |
124 | qca->device_root = debugfs_create_dir(name: dev_name(dev: &qca->net_dev->dev), |
125 | NULL); |
126 | |
127 | debugfs_create_file(name: "info" , S_IFREG | 0444, parent: qca->device_root, data: qca, |
128 | fops: &qcaspi_info_fops); |
129 | } |
130 | |
131 | void |
132 | qcaspi_remove_device_debugfs(struct qcaspi *qca) |
133 | { |
134 | debugfs_remove_recursive(dentry: qca->device_root); |
135 | } |
136 | |
137 | #else /* CONFIG_DEBUG_FS */ |
138 | |
139 | void |
140 | qcaspi_init_device_debugfs(struct qcaspi *qca) |
141 | { |
142 | } |
143 | |
144 | void |
145 | qcaspi_remove_device_debugfs(struct qcaspi *qca) |
146 | { |
147 | } |
148 | |
149 | #endif |
150 | |
151 | static void |
152 | qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p) |
153 | { |
154 | struct qcaspi *qca = netdev_priv(dev); |
155 | |
156 | strscpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver)); |
157 | strscpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version)); |
158 | strscpy(p->fw_version, "QCA7000" , sizeof(p->fw_version)); |
159 | strscpy(p->bus_info, dev_name(&qca->spi_dev->dev), |
160 | sizeof(p->bus_info)); |
161 | } |
162 | |
163 | static int |
164 | qcaspi_get_link_ksettings(struct net_device *dev, |
165 | struct ethtool_link_ksettings *cmd) |
166 | { |
167 | ethtool_link_ksettings_zero_link_mode(cmd, supported); |
168 | ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half); |
169 | |
170 | cmd->base.speed = SPEED_10; |
171 | cmd->base.duplex = DUPLEX_HALF; |
172 | cmd->base.port = PORT_OTHER; |
173 | cmd->base.autoneg = AUTONEG_DISABLE; |
174 | |
175 | return 0; |
176 | } |
177 | |
178 | static void |
179 | qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data) |
180 | { |
181 | struct qcaspi *qca = netdev_priv(dev); |
182 | struct qcaspi_stats *st = &qca->stats; |
183 | |
184 | memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64)); |
185 | } |
186 | |
187 | static void |
188 | qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf) |
189 | { |
190 | switch (stringset) { |
191 | case ETH_SS_STATS: |
192 | memcpy(buf, &qcaspi_gstrings_stats, |
193 | sizeof(qcaspi_gstrings_stats)); |
194 | break; |
195 | default: |
196 | WARN_ON(1); |
197 | break; |
198 | } |
199 | } |
200 | |
201 | static int |
202 | qcaspi_get_sset_count(struct net_device *dev, int sset) |
203 | { |
204 | switch (sset) { |
205 | case ETH_SS_STATS: |
206 | return ARRAY_SIZE(qcaspi_gstrings_stats); |
207 | default: |
208 | return -EINVAL; |
209 | } |
210 | } |
211 | |
212 | static int |
213 | qcaspi_get_regs_len(struct net_device *dev) |
214 | { |
215 | return sizeof(u32) * QCASPI_MAX_REGS; |
216 | } |
217 | |
218 | static void |
219 | qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p) |
220 | { |
221 | struct qcaspi *qca = netdev_priv(dev); |
222 | u32 *regs_buff = p; |
223 | unsigned int i; |
224 | |
225 | regs->version = 1; |
226 | memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS); |
227 | |
228 | for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) { |
229 | u16 offset, value; |
230 | |
231 | qcaspi_read_register(qca, reg: qcaspi_spi_regs[i], result: &value); |
232 | offset = qcaspi_spi_regs[i] >> 8; |
233 | regs_buff[offset] = value; |
234 | } |
235 | } |
236 | |
237 | static void |
238 | qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring, |
239 | struct kernel_ethtool_ringparam *kernel_ring, |
240 | struct netlink_ext_ack *extack) |
241 | { |
242 | struct qcaspi *qca = netdev_priv(dev); |
243 | |
244 | ring->rx_max_pending = QCASPI_RX_MAX_FRAMES; |
245 | ring->tx_max_pending = QCASPI_TX_RING_MAX_LEN; |
246 | ring->rx_pending = QCASPI_RX_MAX_FRAMES; |
247 | ring->tx_pending = qca->txr.count; |
248 | } |
249 | |
250 | static int |
251 | qcaspi_set_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 | if (ring->rx_pending != QCASPI_RX_MAX_FRAMES || |
258 | (ring->rx_mini_pending) || |
259 | (ring->rx_jumbo_pending)) |
260 | return -EINVAL; |
261 | |
262 | if (qca->spi_thread) |
263 | kthread_park(k: qca->spi_thread); |
264 | |
265 | qca->txr.count = max_t(u32, ring->tx_pending, QCASPI_TX_RING_MIN_LEN); |
266 | qca->txr.count = min_t(u16, qca->txr.count, QCASPI_TX_RING_MAX_LEN); |
267 | |
268 | if (qca->spi_thread) |
269 | kthread_unpark(k: qca->spi_thread); |
270 | |
271 | return 0; |
272 | } |
273 | |
274 | static const struct ethtool_ops qcaspi_ethtool_ops = { |
275 | .get_drvinfo = qcaspi_get_drvinfo, |
276 | .get_link = ethtool_op_get_link, |
277 | .get_ethtool_stats = qcaspi_get_ethtool_stats, |
278 | .get_strings = qcaspi_get_strings, |
279 | .get_sset_count = qcaspi_get_sset_count, |
280 | .get_regs_len = qcaspi_get_regs_len, |
281 | .get_regs = qcaspi_get_regs, |
282 | .get_ringparam = qcaspi_get_ringparam, |
283 | .set_ringparam = qcaspi_set_ringparam, |
284 | .get_link_ksettings = qcaspi_get_link_ksettings, |
285 | }; |
286 | |
287 | void qcaspi_set_ethtool_ops(struct net_device *dev) |
288 | { |
289 | dev->ethtool_ops = &qcaspi_ethtool_ops; |
290 | } |
291 | |