Message-Id: <1221080343304-git-send-email-ron.mercer@qlogic.com>
Date:	Wed, 10 Sep 2008 13:59:01 -0700
From:	Ron Mercer <ron.mercer@...gic.com>
To:	jeff@...zik.org
Cc:	netdev@...r.kernel.org, linux-driver@...gic.com,
	ron.mercer@...gic.com
Subject: [PATCH 7/8] [RFC] qlge: Add ethtool module qlge_ethtool.c


Signed-off-by: Ron Mercer <ron.mercer@...gic.com>
---
 drivers/net/qlge/qlge_ethtool.c |  384 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 384 insertions(+), 0 deletions(-)
 create mode 100644 drivers/net/qlge/qlge_ethtool.c

diff --git a/drivers/net/qlge/qlge_ethtool.c b/drivers/net/qlge/qlge_ethtool.c
new file mode 100644
index 0000000..f4d3880
--- /dev/null
+++ b/drivers/net/qlge/qlge_ethtool.c
@@ -0,0 +1,384 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/pagemap.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/dmapool.h>
+#include <linux/mempool.h>
+#include <linux/spinlock.h>
+#include <linux/kthread.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <net/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+
+#include <linux/version.h>
+
+#include "qlge.h"
+
+static int ql_update_ring_coalescing(struct ql_adapter *qdev)
+{
+	int i, err = 0;
+	struct rx_ring *rx_ring;
+	struct cqicb *cqicb;
+
+	spin_lock(&qdev->hw_lock);
+	/* Skip the default queue, and update the outbound handler
+	 * queues if they changed.
+	 */
+	cqicb = (struct cqicb *)&qdev->rx_ring[1];
+	if (le16_to_cpu(cqicb->irq_delay) != qdev->tx_coalesce_usecs ||
+	    le16_to_cpu(cqicb->pkt_delay) != qdev->tx_max_coalesced_frames) {
+		for (i = 1; i < qdev->rss_ring_first_cq_id; i++, rx_ring++) {
+			rx_ring = &qdev->rx_ring[i];
+			cqicb = (struct cqicb *)rx_ring;
+			cqicb->irq_delay = le16_to_cpu(qdev->tx_coalesce_usecs);
+			cqicb->pkt_delay =
+			    le16_to_cpu(qdev->tx_max_coalesced_frames);
+			cqicb->flags = FLAGS_LI;
+			err = ql_write_cfg(qdev, cqicb, sizeof(cqicb),
+						CFG_LCQ, rx_ring->cq_id);
+			if (err) {
+				QPRINTK(qdev, IFUP, ERR,
+					"Failed to load CQICB.\n");
+				goto exit;
+			}
+		}
+	}
+
+	/* Update the inbound (RSS) handler queues if they changed. */
+	cqicb = (struct cqicb *)&qdev->rx_ring[qdev->rss_ring_first_cq_id];
+	if (le16_to_cpu(cqicb->irq_delay) != qdev->rx_coalesce_usecs ||
+	    le16_to_cpu(cqicb->pkt_delay) != qdev->rx_max_coalesced_frames) {
+		for (i = qdev->rss_ring_first_cq_id;
+		     i <= qdev->rss_ring_first_cq_id + qdev->rss_ring_count;
+		     i++) {
+			rx_ring = &qdev->rx_ring[i];
+			cqicb = (struct cqicb *)rx_ring;
+			cqicb->irq_delay = le16_to_cpu(qdev->rx_coalesce_usecs);
+			cqicb->pkt_delay =
+			    le16_to_cpu(qdev->rx_max_coalesced_frames);
+			cqicb->flags = FLAGS_LI;
+			err = ql_write_cfg(qdev, cqicb, sizeof(cqicb),
+						CFG_LCQ, rx_ring->cq_id);
+			if (err) {
+				QPRINTK(qdev, IFUP, ERR,
+					"Failed to load CQICB.\n");
+				goto exit;
+			}
+		}
+	}
+exit:
+	spin_unlock(&qdev->hw_lock);
+	return err;
+}
+
+void ql_update_stats(struct ql_adapter *qdev)
+{
+	u32 i;
+	u64 data;
+	u64 *iter = &qdev->nic_stats.tx_pkts;
+
+	spin_lock(&qdev->stats_lock);
+	if (ql_sem_spinlock(qdev, qdev->xg_sem_mask)) {
+		printk(KERN_ERR "%s: Couldn't get xgmac sem.\n", __func__);
+		goto quit;
+	}
+	/*
+	 * Get TX statistics.
+	 */
+	for (i = 0x200; i < 0x280; i += 8) {
+		if (ql_read_xgmac_reg64(qdev, i, &data)) {
+			QPRINTK(qdev, DRV, ERR,
+				"Error reading status register 0x%.04x.\n", i);
+			goto end;
+		} else
+			*iter = data;
+		iter++;
+	}
+
+	/*
+	 * Get RX statistics.
+	 */
+	for (i = 0x300; i < 0x3d0; i += 8) {
+		if (ql_read_xgmac_reg64(qdev, i, &data)) {
+			QPRINTK(qdev, DRV, ERR,
+				"Error reading status register 0x%.04x.\n", i);
+			goto end;
+		} else
+			*iter = data;
+		iter++;
+	}
+
+end:
+	ql_sem_unlock(qdev, qdev->xg_sem_mask);
+quit:
+	spin_unlock(&qdev->stats_lock);
+
+	QL_DUMP_STAT(qdev);
+
+	return;
+}
+
+static char ql_stats_str_arr[][ETH_GSTRING_LEN] = {
+	{"tx_pkts"},
+	{"tx_bytes"},
+	{"tx_mcast_pkts"},
+	{"tx_bcast_pkts"},
+	{"tx_ucast_pkts"},
+	{"tx_ctl_pkts"},
+	{"tx_pause_pkts"},
+	{"tx_64_pkts"},
+	{"tx_65_to_127_pkts"},
+	{"tx_128_to_255_pkts"},
+	{"tx_256_511_pkts"},
+	{"tx_512_to_1023_pkts"},
+	{"tx_1024_to_1518_pkts"},
+	{"tx_1519_to_max_pkts"},
+	{"tx_undersize_pkts"},
+	{"tx_oversize_pkts"},
+	{"rx_bytes"},
+	{"rx_bytes_ok"},
+	{"rx_pkts"},
+	{"rx_pkts_ok"},
+	{"rx_bcast_pkts"},
+	{"rx_mcast_pkts"},
+	{"rx_ucast_pkts"},
+	{"rx_undersize_pkts"},
+	{"rx_oversize_pkts"},
+	{"rx_jabber_pkts"},
+	{"rx_undersize_fcerr_pkts"},
+	{"rx_drop_events"},
+	{"rx_fcerr_pkts"},
+	{"rx_align_err"},
+	{"rx_symbol_err"},
+	{"rx_mac_err"},
+	{"rx_ctl_pkts"},
+	{"rx_pause_pkts"},
+	{"rx_64_pkts"},
+	{"rx_65_to_127_pkts"},
+	{"rx_128_255_pkts"},
+	{"rx_256_511_pkts"},
+	{"rx_512_to_1023_pkts"},
+	{"rx_1024_to_1518_pkts"},
+	{"rx_1519_to_max_pkts"},
+	{"rx_len_err_pkts"},
+};
+
+static void ql_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
+{
+	switch (stringset) {
+	case ETH_SS_STATS:
+		memcpy(buf, ql_stats_str_arr, sizeof(ql_stats_str_arr));
+		break;
+	}
+}
+
+static int ql_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return ARRAY_SIZE(ql_stats_str_arr);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void
+ql_get_ethtool_stats(struct net_device *ndev,
+		     struct ethtool_stats *stats, u64 *data)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+	struct nic_stats *s = &qdev->nic_stats;
+
+	ql_update_stats(qdev);
+
+	*data++ = s->tx_pkts;
+	*data++ = s->tx_bytes;
+	*data++ = s->tx_mcast_pkts;
+	*data++ = s->tx_bcast_pkts;
+	*data++ = s->tx_ucast_pkts;
+	*data++ = s->tx_ctl_pkts;
+	*data++ = s->tx_pause_pkts;
+	*data++ = s->tx_64_pkt;
+	*data++ = s->tx_65_to_127_pkt;
+	*data++ = s->tx_128_to_255_pkt;
+	*data++ = s->tx_256_511_pkt;
+	*data++ = s->tx_512_to_1023_pkt;
+	*data++ = s->tx_1024_to_1518_pkt;
+	*data++ = s->tx_1519_to_max_pkt;
+	*data++ = s->tx_undersize_pkt;
+	*data++ = s->tx_oversize_pkt;
+	*data++ = s->rx_bytes;
+	*data++ = s->rx_bytes_ok;
+	*data++ = s->rx_pkts;
+	*data++ = s->rx_pkts_ok;
+	*data++ = s->rx_bcast_pkts;
+	*data++ = s->rx_mcast_pkts;
+	*data++ = s->rx_ucast_pkts;
+	*data++ = s->rx_undersize_pkts;
+	*data++ = s->rx_oversize_pkts;
+	*data++ = s->rx_jabber_pkts;
+	*data++ = s->rx_undersize_fcerr_pkts;
+	*data++ = s->rx_drop_events;
+	*data++ = s->rx_fcerr_pkts;
+	*data++ = s->rx_align_err;
+	*data++ = s->rx_symbol_err;
+	*data++ = s->rx_mac_err;
+	*data++ = s->rx_ctl_pkts;
+	*data++ = s->rx_pause_pkts;
+	*data++ = s->rx_64_pkts;
+	*data++ = s->rx_65_to_127_pkts;
+	*data++ = s->rx_128_255_pkts;
+	*data++ = s->rx_256_511_pkts;
+	*data++ = s->rx_512_to_1023_pkts;
+	*data++ = s->rx_1024_to_1518_pkts;
+	*data++ = s->rx_1519_to_max_pkts;
+	*data++ = s->rx_len_err_pkts;
+}
+
+static void ql_get_drvinfo(struct net_device *ndev,
+			   struct ethtool_drvinfo *drvinfo)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+	strncpy(drvinfo->driver, qlge_driver_name, 32);
+	strncpy(drvinfo->version, qlge_driver_version, 32);
+	strncpy(drvinfo->fw_version, "N/A", 32);
+	strncpy(drvinfo->bus_info, pci_name(qdev->pdev), 32);
+	drvinfo->n_stats = 0;
+	drvinfo->testinfo_len = 0;
+	drvinfo->regdump_len = 0;
+	drvinfo->eedump_len = 0;
+}
+
+static int ql_get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
+{
+	struct ql_adapter *qdev = netdev_priv(dev);
+
+	c->rx_coalesce_usecs = qdev->rx_coalesce_usecs;
+	c->tx_coalesce_usecs = qdev->tx_coalesce_usecs;
+
+	/* This chip coalesces as follows:
+	 * If a packet arrives, hold off interrupts until
+	 * cqicb->int_delay expires, but if no other packets arrive don't
+	 * wait longer than cqicb->pkt_int_delay. But ethtool doesn't use a
+	 * timer to coalesce on a frame basis.  So, we have to take ethtool's
+	 * max_coalesced_frames value and convert it to a delay in microseconds.
+	 * We do this by using a basic thoughput of 1,000,000 frames per
+	 * second @ (1024 bytes).  This means one frame per usec. So it's a
+	 * simple one to one ratio.
+	 */
+	c->rx_max_coalesced_frames = qdev->rx_max_coalesced_frames;
+	c->tx_max_coalesced_frames = qdev->tx_max_coalesced_frames;
+
+	return 0;
+}
+
+static int ql_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *c)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+
+	/* Validate user parameters. */
+	if (c->rx_coalesce_usecs > qdev->rx_ring_size / 2)
+		return -EINVAL;
+       /* Don't wait more than 10 usec. */
+	if (c->rx_max_coalesced_frames > MAX_INTER_FRAME_WAIT)
+		return -EINVAL;
+	if (c->tx_coalesce_usecs > qdev->tx_ring_size / 2)
+		return -EINVAL;
+	if (c->tx_max_coalesced_frames > MAX_INTER_FRAME_WAIT)
+		return -EINVAL;
+
+	/* Verify a change took place before updating the hardware. */
+	if (qdev->rx_coalesce_usecs == c->rx_coalesce_usecs &&
+	    qdev->tx_coalesce_usecs == c->tx_coalesce_usecs &&
+	    qdev->rx_max_coalesced_frames == c->rx_max_coalesced_frames &&
+	    qdev->tx_max_coalesced_frames == c->tx_max_coalesced_frames)
+		return 0;
+
+	qdev->rx_coalesce_usecs = c->rx_coalesce_usecs;
+	qdev->tx_coalesce_usecs = c->tx_coalesce_usecs;
+	qdev->rx_max_coalesced_frames = c->rx_max_coalesced_frames;
+	qdev->tx_max_coalesced_frames = c->tx_max_coalesced_frames;
+
+	return ql_update_ring_coalescing(qdev);
+}
+
+static u32 ql_get_rx_csum(struct net_device *netdev)
+{
+	struct ql_adapter *qdev = netdev_priv(netdev);
+	return qdev->rx_csum;
+}
+
+static int ql_set_rx_csum(struct net_device *netdev, uint32_t data)
+{
+	struct ql_adapter *qdev = netdev_priv(netdev);
+	qdev->rx_csum = data;
+	return 0;
+}
+
+static int ql_set_tso(struct net_device *ndev, uint32_t data)
+{
+
+	if (data) {
+		ndev->features |= NETIF_F_TSO;
+		ndev->features |= NETIF_F_TSO6;
+	} else {
+		ndev->features &= ~NETIF_F_TSO;
+		ndev->features &= ~NETIF_F_TSO6;
+	}
+	return 0;
+}
+
+static u32 ql_get_msglevel(struct net_device *ndev)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+	return qdev->msg_enable;
+}
+
+static void ql_set_msglevel(struct net_device *ndev, u32 value)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+	qdev->msg_enable = value;
+}
+
+const struct ethtool_ops qlge_ethtool_ops = {
+	.get_drvinfo = ql_get_drvinfo,
+	.get_msglevel = ql_get_msglevel,
+	.set_msglevel = ql_set_msglevel,
+	.get_rx_csum = ql_get_rx_csum,
+	.set_rx_csum = ql_set_rx_csum,
+	.get_tx_csum = ethtool_op_get_tx_csum,
+	.get_sg = ethtool_op_get_sg,
+	.set_sg = ethtool_op_set_sg,
+	.get_tso = ethtool_op_get_tso,
+	.set_tso = ql_set_tso,
+	.get_coalesce = ql_get_coalesce,
+	.set_coalesce = ql_set_coalesce,
+	.get_sset_count = ql_get_sset_count,
+	.get_strings = ql_get_strings,
+	.get_ethtool_stats = ql_get_ethtool_stats,
+};
+
-- 
1.5.0.rc4.16.g9e258

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