https://github.com/torvalds/linux
Tip revision: 464e1d5f23cca236b930ef068c328a64cab78fb1 authored by Linus Torvalds on 24 December 2017, 04:47:16 UTC
Linux 4.15-rc5
Linux 4.15-rc5
Tip revision: 464e1d5
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_link_ksettings(struct net_device *dev,
struct ethtool_link_ksettings *cmd)
{
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
cmd->base.speed = SPEED_10;
cmd->base.duplex = DUPLEX_HALF;
cmd->base.port = PORT_OTHER;
cmd->base.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)
{
const struct net_device_ops *ops = dev->netdev_ops;
struct qcaspi *qca = netdev_priv(dev);
if ((ring->rx_pending) ||
(ring->rx_mini_pending) ||
(ring->rx_jumbo_pending))
return -EINVAL;
if (netif_running(dev))
ops->ndo_stop(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))
ops->ndo_open(dev);
return 0;
}
static const struct ethtool_ops qcaspi_ethtool_ops = {
.get_drvinfo = qcaspi_get_drvinfo,
.get_link = ethtool_op_get_link,
.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,
.get_link_ksettings = qcaspi_get_link_ksettings,
};
void qcaspi_set_ethtool_ops(struct net_device *dev)
{
dev->ethtool_ops = &qcaspi_ethtool_ops;
}