Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 303 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qualcomm/qca_debug.c b/drivers/net/ethernet/qualcomm/qca_debug.c
new file mode 100644
index 0000000000..1822f2ad8f
--- /dev/null
+++ b/drivers/net/ethernet/qualcomm/qca_debug.c
@@ -0,0 +1,303 @@
+/*
+ *   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
+
+#define QCASPI_RX_MAX_FRAMES 4
+
+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",
+	"Write verify errors",
+	"Buffer available errors",
+	"Bad signature",
+};
+
+#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)spi_get_chipselect(qca->spi_dev, 0));
+	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;
+}
+DEFINE_SHOW_ATTRIBUTE(qcaspi_info);
+
+void
+qcaspi_init_device_debugfs(struct qcaspi *qca)
+{
+	qca->device_root = debugfs_create_dir(dev_name(&qca->net_dev->dev),
+					      NULL);
+
+	debugfs_create_file("info", S_IFREG | 0444, qca->device_root, qca,
+			    &qcaspi_info_fops);
+}
+
+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);
+
+	strscpy(p->driver, QCASPI_DRV_NAME, sizeof(p->driver));
+	strscpy(p->version, QCASPI_DRV_VERSION, sizeof(p->version));
+	strscpy(p->fw_version, "QCA7000", sizeof(p->fw_version));
+	strscpy(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 kernel_ethtool_ringparam *kernel_ring,
+		     struct netlink_ext_ack *extack)
+{
+	struct qcaspi *qca = netdev_priv(dev);
+
+	ring->rx_max_pending = QCASPI_RX_MAX_FRAMES;
+	ring->tx_max_pending = TX_RING_MAX_LEN;
+	ring->rx_pending = QCASPI_RX_MAX_FRAMES;
+	ring->tx_pending = qca->txr.count;
+}
+
+static int
+qcaspi_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring,
+		     struct kernel_ethtool_ringparam *kernel_ring,
+		     struct netlink_ext_ack *extack)
+{
+	struct qcaspi *qca = netdev_priv(dev);
+
+	if (ring->rx_pending != QCASPI_RX_MAX_FRAMES ||
+	    (ring->rx_mini_pending) ||
+	    (ring->rx_jumbo_pending))
+		return -EINVAL;
+
+	if (qca->spi_thread)
+		kthread_park(qca->spi_thread);
+
+	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 (qca->spi_thread)
+		kthread_unpark(qca->spi_thread);
+
+	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;
+}