[deliverable/linux.git] / drivers / net / ethernet / qualcomm / qca_debug.c

/*
 *   Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
 *   Copyright (c) 2014, I2SE GmbH
 *
 *   Permission to use, copy, modify, and/or distribute this software
 *   for any purpose with or without fee is hereby granted, provided
 *   that the above copyright notice and this permission notice appear
 *   in all copies.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 *   WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
 *   THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
 *   CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 *   LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 *   NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 *   CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*   This file contains debugging routines for use in the QCA7K driver.
 */

#include <linux/debugfs.h>
#include <linux/ethtool.h>
#include <linux/seq_file.h>
#include <linux/types.h>

#include "qca_7k.h"
#include "qca_debug.h"

#define QCASPI_MAX_REGS 0x20

static const u16 qcaspi_spi_regs[] = {
	SPI_REG_BFR_SIZE,
	SPI_REG_WRBUF_SPC_AVA,
	SPI_REG_RDBUF_BYTE_AVA,
	SPI_REG_SPI_CONFIG,
	SPI_REG_SPI_STATUS,
	SPI_REG_INTR_CAUSE,
	SPI_REG_INTR_ENABLE,
	SPI_REG_RDBUF_WATERMARK,
	SPI_REG_WRBUF_WATERMARK,
	SPI_REG_SIGNATURE,
	SPI_REG_ACTION_CTRL
};

/* The order of these strings must match the order of the fields in
 * struct qcaspi_stats
 * See qca_spi.h
 */
static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
	"Triggered resets",
	"Device resets",
	"Reset timeouts",
	"Read errors",
	"Write errors",
	"Read buffer errors",
	"Write buffer errors",
	"Out of memory",
	"Write buffer misses",
	"Transmit ring full",
	"SPI errors",
};

#ifdef CONFIG_DEBUG_FS

static int
qcaspi_info_show(struct seq_file *s, void *what)
{
	struct qcaspi *qca = s->private;

	seq_printf(s, "RX buffer size   : %lu\n",
		   (unsigned long)qca->buffer_size);

	seq_puts(s, "TX ring state    : ");

	if (qca->txr.skb[qca->txr.head] == NULL)
		seq_puts(s, "empty");
	else if (qca->txr.skb[qca->txr.tail])
		seq_puts(s, "full");
	else
		seq_puts(s, "in use");

	seq_puts(s, "\n");

	seq_printf(s, "TX ring size     : %u\n",
		   qca->txr.size);

	seq_printf(s, "Sync state       : %u (",
		   (unsigned int)qca->sync);
	switch (qca->sync) {
	case QCASPI_SYNC_UNKNOWN:
		seq_puts(s, "QCASPI_SYNC_UNKNOWN");
		break;
	case QCASPI_SYNC_RESET:
		seq_puts(s, "QCASPI_SYNC_RESET");
		break;
	case QCASPI_SYNC_READY:
		seq_puts(s, "QCASPI_SYNC_READY");
		break;
	default:
		seq_puts(s, "INVALID");
		break;
	}
	seq_puts(s, ")\n");

	seq_printf(s, "IRQ              : %d\n",
		   qca->spi_dev->irq);
	seq_printf(s, "INTR REQ         : %u\n",
		   qca->intr_req);
	seq_printf(s, "INTR SVC         : %u\n",
		   qca->intr_svc);

	seq_printf(s, "SPI max speed    : %lu\n",
		   (unsigned long)qca->spi_dev->max_speed_hz);
	seq_printf(s, "SPI mode         : %x\n",
		   qca->spi_dev->mode);
	seq_printf(s, "SPI chip select  : %u\n",
		   (unsigned int)qca->spi_dev->chip_select);
	seq_printf(s, "SPI legacy mode  : %u\n",
		   (unsigned int)qca->legacy_mode);
	seq_printf(s, "SPI burst length : %u\n",
		   (unsigned int)qca->burst_len);

	return 0;
}

static int
qcaspi_info_open(struct inode *inode, struct file *file)
{
	return single_open(file, qcaspi_info_show, inode->i_private);
}

static const struct file_operations qcaspi_info_ops = {
	.open = qcaspi_info_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

void
qcaspi_init_device_debugfs(struct qcaspi *qca)
{
	struct dentry *device_root;

	device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev), NULL);
	qca->device_root = device_root;

	if (IS_ERR(device_root) || !device_root) {
		pr_warn("failed to create debugfs directory for %s\n",
			dev_name(&qca->net_dev->dev));
		return;
	}
	debugfs_create_file("info", S_IFREG | S_IRUGO, device_root, qca,
			    &qcaspi_info_ops);
}

void
qcaspi_remove_device_debugfs(struct qcaspi *qca)
{
	debugfs_remove_recursive(qca->device_root);
}

#else /* CONFIG_DEBUG_FS */

void
qcaspi_init_device_debugfs(struct qcaspi *qca)
{
}

void
qcaspi_remove_device_debugfs(struct qcaspi *qca)
{
}

#endif

static void
qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
{
	struct qcaspi *qca = netdev_priv(dev);

	strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
	strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
	strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
	strlcpy(p->bus_info, dev_name(&qca->spi_dev->dev),
		sizeof(p->bus_info));
}

static int
qcaspi_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	cmd->transceiver = XCVR_INTERNAL;
	cmd->supported = SUPPORTED_10baseT_Half;
	ethtool_cmd_speed_set(cmd,  SPEED_10);
	cmd->duplex = DUPLEX_HALF;
	cmd->port = PORT_OTHER;
	cmd->autoneg = AUTONEG_DISABLE;

	return 0;
}

static void
qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
{
	struct qcaspi *qca = netdev_priv(dev);
	struct qcaspi_stats *st = &qca->stats;

	memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
}

static void
qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
{
	switch (stringset) {
	case ETH_SS_STATS:
		memcpy(buf, &qcaspi_gstrings_stats,
		       sizeof(qcaspi_gstrings_stats));
		break;
	default:
		WARN_ON(1);
		break;
	}
}

static int
qcaspi_get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return ARRAY_SIZE(qcaspi_gstrings_stats);
	default:
		return -EINVAL;
	}
}

static int
qcaspi_get_regs_len(struct net_device *dev)
{
	return sizeof(u32) * QCASPI_MAX_REGS;
}

static void
qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
{
	struct qcaspi *qca = netdev_priv(dev);
	u32 *regs_buff = p;
	unsigned int i;

	regs->version = 1;
	memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);

	for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
		u16 offset, value;

		qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
		offset = qcaspi_spi_regs[i] >> 8;
		regs_buff[offset] = value;
	}
}

static void
qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
{
	struct qcaspi *qca = netdev_priv(dev);

	ring->rx_max_pending = 4;
	ring->tx_max_pending = TX_RING_MAX_LEN;
	ring->rx_pending = 4;
	ring->tx_pending = qca->txr.count;
}

static int
qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
{
	struct qcaspi *qca = netdev_priv(dev);

	if ((ring->rx_pending) ||
	    (ring->rx_mini_pending) ||
	    (ring->rx_jumbo_pending))
		return -EINVAL;

	if (netif_running(dev))
		qcaspi_netdev_close(dev);

	qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
	qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);

	if (netif_running(dev))
		qcaspi_netdev_open(dev);

	return 0;
}

static const struct ethtool_ops qcaspi_ethtool_ops = {
	.get_drvinfo = qcaspi_get_drvinfo,
	.get_link = ethtool_op_get_link,
	.get_settings = qcaspi_get_settings,
	.get_ethtool_stats = qcaspi_get_ethtool_stats,
	.get_strings = qcaspi_get_strings,
	.get_sset_count = qcaspi_get_sset_count,
	.get_regs_len = qcaspi_get_regs_len,
	.get_regs = qcaspi_get_regs,
	.get_ringparam = qcaspi_get_ringparam,
	.set_ringparam = qcaspi_set_ringparam,
};

void qcaspi_set_ethtool_ops(struct net_device *dev)
{
	dev->ethtool_ops = &qcaspi_ethtool_ops;
}
Commit	Line	Data
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	}
154	debugfs_create_file("info", S_IFREG \| S_IRUGO, device_root, qca,
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
191	qcaspi_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
203	static void
204	qcaspi_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
212	static void
213	qcaspi_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
226	static int
227	qcaspi_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
237	static int
238	qcaspi_get_regs_len(struct net_device *dev)
239	{
240	return sizeof(u32) * QCASPI_MAX_REGS;
241	}
242
243	static void
244	qcaspi_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
262	static void
263	qcaspi_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
273	static int
274	qcaspi_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
295	static 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
308	void qcaspi_set_ethtool_ops(struct net_device *dev)
309	{
310	dev->ethtool_ops = &qcaspi_ethtool_ops;
311	}