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net: qualcomm: new Ethernet over SPI driver for QCA7000
This patch adds the Ethernet over SPI driver for the Qualcomm QCA7000 HomePlug GreenPHY. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Wahren
David S. Miller
parent
7d50df8f72
commit
291ab06ecf
12 changed files with 2001 additions and 0 deletions
311
drivers/net/ethernet/qualcomm/qca_debug.c
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311
drivers/net/ethernet/qualcomm/qca_debug.c
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/*
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* Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
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* Copyright (c) 2014, I2SE GmbH
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*
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* Permission to use, copy, modify, and/or distribute this software
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* for any purpose with or without fee is hereby granted, provided
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* that the above copyright notice and this permission notice appear
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* in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* This file contains debugging routines for use in the QCA7K driver.
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*/
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#include <linux/debugfs.h>
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#include <linux/ethtool.h>
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#include <linux/seq_file.h>
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#include <linux/types.h>
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#include "qca_7k.h"
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#include "qca_debug.h"
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#define QCASPI_MAX_REGS 0x20
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static const u16 qcaspi_spi_regs[] = {
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SPI_REG_BFR_SIZE,
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SPI_REG_WRBUF_SPC_AVA,
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SPI_REG_RDBUF_BYTE_AVA,
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SPI_REG_SPI_CONFIG,
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SPI_REG_SPI_STATUS,
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SPI_REG_INTR_CAUSE,
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SPI_REG_INTR_ENABLE,
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SPI_REG_RDBUF_WATERMARK,
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SPI_REG_WRBUF_WATERMARK,
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SPI_REG_SIGNATURE,
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SPI_REG_ACTION_CTRL
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};
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/* The order of these strings must match the order of the fields in
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* struct qcaspi_stats
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* See qca_spi.h
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*/
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static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
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"Triggered resets",
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"Device resets",
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"Reset timeouts",
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"Read errors",
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"Write errors",
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"Read buffer errors",
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"Write buffer errors",
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"Out of memory",
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"Write buffer misses",
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"Transmit ring full",
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"SPI errors",
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};
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#ifdef CONFIG_DEBUG_FS
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static int
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qcaspi_info_show(struct seq_file *s, void *what)
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{
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struct qcaspi *qca = s->private;
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seq_printf(s, "RX buffer size : %lu\n",
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(unsigned long)qca->buffer_size);
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seq_puts(s, "TX ring state : ");
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if (qca->txr.skb[qca->txr.head] == NULL)
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seq_puts(s, "empty");
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else if (qca->txr.skb[qca->txr.tail])
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seq_puts(s, "full");
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else
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seq_puts(s, "in use");
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seq_puts(s, "\n");
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seq_printf(s, "TX ring size : %u\n",
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qca->txr.size);
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seq_printf(s, "Sync state : %u (",
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(unsigned int)qca->sync);
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switch (qca->sync) {
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case QCASPI_SYNC_UNKNOWN:
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seq_puts(s, "QCASPI_SYNC_UNKNOWN");
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break;
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case QCASPI_SYNC_RESET:
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seq_puts(s, "QCASPI_SYNC_RESET");
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break;
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case QCASPI_SYNC_READY:
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seq_puts(s, "QCASPI_SYNC_READY");
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break;
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default:
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seq_puts(s, "INVALID");
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break;
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}
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seq_puts(s, ")\n");
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seq_printf(s, "IRQ : %d\n",
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qca->spi_dev->irq);
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seq_printf(s, "INTR REQ : %u\n",
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qca->intr_req);
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seq_printf(s, "INTR SVC : %u\n",
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qca->intr_svc);
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seq_printf(s, "SPI max speed : %lu\n",
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(unsigned long)qca->spi_dev->max_speed_hz);
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seq_printf(s, "SPI mode : %x\n",
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qca->spi_dev->mode);
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seq_printf(s, "SPI chip select : %u\n",
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(unsigned int)qca->spi_dev->chip_select);
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seq_printf(s, "SPI legacy mode : %u\n",
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(unsigned int)qca->legacy_mode);
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seq_printf(s, "SPI burst length : %u\n",
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(unsigned int)qca->burst_len);
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return 0;
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}
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static int
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qcaspi_info_open(struct inode *inode, struct file *file)
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{
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return single_open(file, qcaspi_info_show, inode->i_private);
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}
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static const struct file_operations qcaspi_info_ops = {
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.open = qcaspi_info_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void
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qcaspi_init_device_debugfs(struct qcaspi *qca)
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{
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struct dentry *device_root;
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device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev), NULL);
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qca->device_root = device_root;
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if (IS_ERR(device_root) || !device_root) {
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pr_warn("failed to create debugfs directory for %s\n",
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dev_name(&qca->net_dev->dev));
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return;
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}
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debugfs_create_file("info", S_IFREG | S_IRUGO, device_root, qca,
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&qcaspi_info_ops);
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}
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void
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qcaspi_remove_device_debugfs(struct qcaspi *qca)
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{
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debugfs_remove_recursive(qca->device_root);
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}
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#else /* CONFIG_DEBUG_FS */
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void
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qcaspi_init_device_debugfs(struct qcaspi *qca)
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{
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}
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void
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qcaspi_remove_device_debugfs(struct qcaspi *qca)
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{
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}
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#endif
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static void
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qcaspi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *p)
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{
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struct qcaspi *qca = netdev_priv(dev);
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strlcpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
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strlcpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
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strlcpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
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strlcpy(p->bus_info, dev_name(&qca->spi_dev->dev),
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sizeof(p->bus_info));
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}
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static int
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qcaspi_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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cmd->transceiver = XCVR_INTERNAL;
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cmd->supported = SUPPORTED_10baseT_Half;
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ethtool_cmd_speed_set(cmd, SPEED_10);
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cmd->duplex = DUPLEX_HALF;
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cmd->port = PORT_OTHER;
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cmd->autoneg = AUTONEG_DISABLE;
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return 0;
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}
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static void
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qcaspi_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *data)
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{
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struct qcaspi *qca = netdev_priv(dev);
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struct qcaspi_stats *st = &qca->stats;
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memcpy(data, st, ARRAY_SIZE(qcaspi_gstrings_stats) * sizeof(u64));
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}
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static void
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qcaspi_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
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{
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switch (stringset) {
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case ETH_SS_STATS:
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memcpy(buf, &qcaspi_gstrings_stats,
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sizeof(qcaspi_gstrings_stats));
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break;
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default:
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WARN_ON(1);
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break;
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}
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}
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static int
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qcaspi_get_sset_count(struct net_device *dev, int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return ARRAY_SIZE(qcaspi_gstrings_stats);
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default:
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return -EINVAL;
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}
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}
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static int
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qcaspi_get_regs_len(struct net_device *dev)
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{
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return sizeof(u32) * QCASPI_MAX_REGS;
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}
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static void
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qcaspi_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
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{
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struct qcaspi *qca = netdev_priv(dev);
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u32 *regs_buff = p;
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unsigned int i;
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regs->version = 1;
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memset(regs_buff, 0, sizeof(u32) * QCASPI_MAX_REGS);
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for (i = 0; i < ARRAY_SIZE(qcaspi_spi_regs); i++) {
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u16 offset, value;
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qcaspi_read_register(qca, qcaspi_spi_regs[i], &value);
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offset = qcaspi_spi_regs[i] >> 8;
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regs_buff[offset] = value;
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}
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}
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static void
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qcaspi_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
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{
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struct qcaspi *qca = netdev_priv(dev);
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ring->rx_max_pending = 4;
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ring->tx_max_pending = TX_RING_MAX_LEN;
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ring->rx_pending = 4;
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ring->tx_pending = qca->txr.count;
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}
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static int
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qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
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{
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struct qcaspi *qca = netdev_priv(dev);
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if ((ring->rx_pending) ||
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(ring->rx_mini_pending) ||
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(ring->rx_jumbo_pending))
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return -EINVAL;
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if (netif_running(dev))
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qcaspi_netdev_close(dev);
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qca->txr.count = max_t(u32, ring->tx_pending, TX_RING_MIN_LEN);
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qca->txr.count = min_t(u16, qca->txr.count, TX_RING_MAX_LEN);
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if (netif_running(dev))
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qcaspi_netdev_open(dev);
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return 0;
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}
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static const struct ethtool_ops qcaspi_ethtool_ops = {
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.get_drvinfo = qcaspi_get_drvinfo,
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.get_link = ethtool_op_get_link,
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.get_settings = qcaspi_get_settings,
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.get_ethtool_stats = qcaspi_get_ethtool_stats,
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.get_strings = qcaspi_get_strings,
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.get_sset_count = qcaspi_get_sset_count,
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.get_regs_len = qcaspi_get_regs_len,
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.get_regs = qcaspi_get_regs,
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.get_ringparam = qcaspi_get_ringparam,
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.set_ringparam = qcaspi_set_ringparam,
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};
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void qcaspi_set_ethtool_ops(struct net_device *dev)
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{
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dev->ethtool_ops = &qcaspi_ethtool_ops;
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}
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