| /* |
| * 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; |
| } |