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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
48
49
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};
64
65#ifdef CONFIG_DEBUG_FS
66
67static int
68qcaspi_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
128static int
129qcaspi_info_open(struct inode *inode, struct file *file)
130{
131 return single_open(file, qcaspi_info_show, inode->i_private);
132}
133
134static 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
141void
142qcaspi_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 }
154 debugfs_create_file("info", S_IFREG | S_IRUGO, device_root, qca,
155 &qcaspi_info_ops);
156}
157
158void
159qcaspi_remove_device_debugfs(struct qcaspi *qca)
160{
161 debugfs_remove_recursive(qca->device_root);
162}
163
164#else
165
166void
167qcaspi_init_device_debugfs(struct qcaspi *qca)
168{
169}
170
171void
172qcaspi_remove_device_debugfs(struct qcaspi *qca)
173{
174}
175
176#endif
177
178static void
179qcaspi_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
190static int
191qcaspi_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
192{
193 cmd->transceiver = XCVR_INTERNAL;
194 cmd->supported = SUPPORTED_10baseT_Half;
195 ethtool_cmd_speed_set(cmd, SPEED_10);
196 cmd->duplex = DUPLEX_HALF;
197 cmd->port = PORT_OTHER;
198 cmd->autoneg = AUTONEG_DISABLE;
199
200 return 0;
201}
202
203static void
204qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
205{
206 struct qcaspi *qca = netdev_priv(dev);
207 struct qcaspi_stats *st = &qca->stats;
208
209 memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
210}
211
212static void
213qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
214{
215 switch (stringset) {
216 case ETH_SS_STATS:
217 memcpy(buf, &qcaspi_gstrings_stats,
218 sizeof(qcaspi_gstrings_stats));
219 break;
220 default:
221 WARN_ON(1);
222 break;
223 }
224}
225
226static int
227qcaspi_get_sset_count(struct net_device *dev, int sset)
228{
229 switch (sset) {
230 case ETH_SS_STATS:
231 return ARRAY_SIZE(qcaspi_gstrings_stats);
232 default:
233 return -EINVAL;
234 }
235}
236
237static int
238qcaspi_get_regs_len(struct net_device *dev)
239{
240 return sizeof(u32) * QCASPI_MAX_REGS;
241}
242
243static void
244qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
245{
246 struct qcaspi *qca = netdev_priv(dev);
247 u32 *regs_buff = p;
248 unsigned int i;
249
250 regs->version = 1;
251 memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
252
253 for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
254 u16 offset, value;
255
256 qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
257 offset = qcaspi_spi_regs[i] >> 8;
258 regs_buff[offset] = value;
259 }
260}
261
262static void
263qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
264{
265 struct qcaspi *qca = netdev_priv(dev);
266
267 ring->rx_max_pending = 4;
268 ring->tx_max_pending = TX_RING_MAX_LEN;
269 ring->rx_pending = 4;
270 ring->tx_pending = qca->txr.count;
271}
272
273static int
274qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
275{
276 struct qcaspi *qca = netdev_priv(dev);
277
278 if ((ring->rx_pending) ||
279 (ring->rx_mini_pending) ||
280 (ring->rx_jumbo_pending))
281 return -EINVAL;
282
283 if (netif_running(dev))
284 qcaspi_netdev_close(dev);
285
286 qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
287 qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
288
289 if (netif_running(dev))
290 qcaspi_netdev_open(dev);
291
292 return 0;
293}
294
295static const struct ethtool_ops qcaspi_ethtool_ops = {
296 .get_drvinfo = qcaspi_get_drvinfo,
297 .get_link = ethtool_op_get_link,
298 .get_settings = qcaspi_get_settings,
299 .get_ethtool_stats = qcaspi_get_ethtool_stats,
300 .get_strings = qcaspi_get_strings,
301 .get_sset_count = qcaspi_get_sset_count,
302 .get_regs_len = qcaspi_get_regs_len,
303 .get_regs = qcaspi_get_regs,
304 .get_ringparam = qcaspi_get_ringparam,
305 .set_ringparam = qcaspi_set_ringparam,
306};
307
308void qcaspi_set_ethtool_ops(struct net_device *dev)
309{
310 dev->ethtool_ops = &qcaspi_ethtool_ops;
311}
312
