pasemi_mac: basic ethtool support

First cut at ethtool support, to be completed over time.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Jeff Garzik <jgarzik@pobox.com>

4 files changed, 189 insertions, 19 deletions

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 3b1ea321dc05..4b442739e7bf 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -218,7 +218,8 @@ obj-$(CONFIG_SMC911X) += smc911x.o
 obj-$(CONFIG_BFIN_MAC) += bfin_mac.o
 obj-$(CONFIG_DM9000) += dm9000.o
 obj-$(CONFIG_FEC_8XX) += fec_8xx/
-obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
+obj-$(CONFIG_PASEMI_MAC) += pasemi_mac_driver.o
+pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o
 obj-$(CONFIG_MLX4_CORE) += mlx4/
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index 5ee7e4a73ae0..c50f0f4de6d8 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -55,12 +55,6 @@
  * - Multiqueue RX/TX
  */
 
-
-/* Must be a power of two */
-#define RX_RING_SIZE 2048
-#define TX_RING_SIZE 4096
-#define CS_RING_SIZE (TX_RING_SIZE*2)
-
 #define LRO_MAX_AGGR 64
 
 #define PE_MIN_MTU      64
@@ -77,17 +71,6 @@
          NETIF_MSG_RX_ERR       | \
          NETIF_MSG_TX_ERR)
 
-#define TX_DESC(tx, num)        ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
-#define TX_DESC_INFO(tx, num)   ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
-#define RX_DESC(rx, num)        ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
-#define RX_DESC_INFO(rx, num)   ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
-#define RX_BUFF(rx, num)        ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
-#define CS_DESC(cs, num)        ((cs)->chan.ring_virt[(num) & (CS_RING_SIZE-1)])
-
-#define RING_USED(ring)         (((ring)->next_to_fill - (ring)->next_to_clean) \
-                                 & ((ring)->size - 1))
-#define RING_AVAIL(ring)        ((ring->size) - RING_USED(ring))
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR ("Olof Johansson <olof@lixom.net>");
 MODULE_DESCRIPTION("PA Semi PWRficient Ethernet driver");
@@ -96,6 +79,8 @@ static int debug = -1;	/* -1 == use DEFAULT_MSG_ENABLE as value */
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "PA Semi MAC bitmapped debugging message enable value");
 
+extern const struct ethtool_ops pasemi_mac_ethtool_ops;
+
 static int translation_enabled(void)
 {
 #if defined(CONFIG_PPC_PASEMI_IOMMU_DMA_FORCE)
@@ -1148,7 +1133,7 @@ static int pasemi_mac_open(struct net_device *dev)
 {
         struct pasemi_mac *mac = netdev_priv(dev);
         unsigned int flags;
-        int ret;
+        int i, ret;
 
         flags = PAS_MAC_CFG_TXP_FCE | PAS_MAC_CFG_TXP_FPC(3) |
                 PAS_MAC_CFG_TXP_SL(3) | PAS_MAC_CFG_TXP_COB(0xf) |
@@ -1171,6 +1156,10 @@ static int pasemi_mac_open(struct net_device *dev)
                         goto out_tx_ring;
         }
 
+        /* Zero out rmon counters */
+        for (i = 0; i < 32; i++)
+                write_mac_reg(mac, PAS_MAC_RMON(i), 0);
+
         /* 0x3ff with 33MHz clock is about 31us */
         write_iob_reg(PAS_IOB_DMA_COM_TIMEOUTCFG,
                       PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0x3ff));
@@ -1812,6 +1801,7 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         mac->bufsz = dev->mtu + ETH_HLEN + ETH_FCS_LEN + LOCAL_SKB_ALIGN + 128;
 
         dev->change_mtu = pasemi_mac_change_mtu;
+        dev->ethtool_ops = &pasemi_mac_ethtool_ops;
 
         if (err)
                 goto out;
diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h
index 90c51670a1e7..1a115ec60b53 100644
--- a/drivers/net/pasemi_mac.h
+++ b/drivers/net/pasemi_mac.h
@@ -26,6 +26,12 @@
 #include <linux/spinlock.h>
 #include <linux/phy.h>
 
+/* Must be a power of two */
+#define RX_RING_SIZE 2048
+#define TX_RING_SIZE 4096
+#define CS_RING_SIZE (TX_RING_SIZE*2)
+
+
 #define MAX_LRO_DESCRIPTORS 8
 #define MAX_CS  2
 
@@ -103,6 +109,16 @@ struct pasemi_mac_buffer {
         dma_addr_t      dma;
 };
 
+#define TX_DESC(tx, num)        ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
+#define TX_DESC_INFO(tx, num)   ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
+#define RX_DESC(rx, num)        ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
+#define RX_DESC_INFO(rx, num)   ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
+#define RX_BUFF(rx, num)        ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
+#define CS_DESC(cs, num)        ((cs)->chan.ring_virt[(num) & (CS_RING_SIZE-1)])
+
+#define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \
+                                & ((ring)->size - 1))
+#define RING_AVAIL(ring)        ((ring->size) - RING_USED(ring))
 
 /* PCI register offsets and formats */
 
@@ -114,6 +130,7 @@ enum {
         PAS_MAC_CFG_ADR0 = 0x8c,
         PAS_MAC_CFG_ADR1 = 0x90,
         PAS_MAC_CFG_TXP = 0x98,
+        PAS_MAC_CFG_RMON = 0x100,
         PAS_MAC_IPC_CHNL = 0x208,
 };
 
@@ -185,6 +202,8 @@ enum {
 #define PAS_MAC_CFG_TXP_TIFG(x)         (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \
                                          PAS_MAC_CFG_TXP_TIFG_M)
 
+#define PAS_MAC_RMON(r)                 (0x100+(r)*4)
+
 #define PAS_MAC_IPC_CHNL_DCHNO_M        0x003f0000
 #define PAS_MAC_IPC_CHNL_DCHNO_S        16
 #define PAS_MAC_IPC_CHNL_DCHNO(x)       (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \
@@ -194,4 +213,5 @@ enum {
 #define PAS_MAC_IPC_CHNL_BCH(x)         (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \
                                          PAS_MAC_IPC_CHNL_BCH_M)
 
+
 #endif /* PASEMI_MAC_H */
diff --git a/drivers/net/pasemi_mac_ethtool.c b/drivers/net/pasemi_mac_ethtool.c
new file mode 100644
index 000000000000..5e8df3afea64
--- /dev/null
+++ b/drivers/net/pasemi_mac_ethtool.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2006-2008 PA Semi, Inc
+ *
+ * Ethtool hooks for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/inet_lro.h>
+
+#include <asm/pasemi_dma.h>
+#include "pasemi_mac.h"
+
+static struct {
+        const char str[ETH_GSTRING_LEN];
+} ethtool_stats_keys[] = {
+        { "rx-drops" },
+        { "rx-bytes" },
+        { "rx-packets" },
+        { "rx-broadcast-packets" },
+        { "rx-multicast-packets" },
+        { "rx-crc-errors" },
+        { "rx-undersize-errors" },
+        { "rx-oversize-errors" },
+        { "rx-short-fragment-errors" },
+        { "rx-jabber-errors" },
+        { "rx-64-byte-packets" },
+        { "rx-65-127-byte-packets" },
+        { "rx-128-255-byte-packets" },
+        { "rx-256-511-byte-packets" },
+        { "rx-512-1023-byte-packets" },
+        { "rx-1024-1518-byte-packets" },
+        { "rx-pause-frames" },
+        { "tx-bytes" },
+        { "tx-packets" },
+        { "tx-broadcast-packets" },
+        { "tx-multicast-packets" },
+        { "tx-collisions" },
+        { "tx-late-collisions" },
+        { "tx-excessive-collisions" },
+        { "tx-crc-errors" },
+        { "tx-undersize-errors" },
+        { "tx-oversize-errors" },
+        { "tx-64-byte-packets" },
+        { "tx-65-127-byte-packets" },
+        { "tx-128-255-byte-packets" },
+        { "tx-256-511-byte-packets" },
+        { "tx-512-1023-byte-packets" },
+        { "tx-1024-1518-byte-packets" },
+};
+
+static int
+pasemi_mac_ethtool_get_settings(struct net_device *netdev,
+                               struct ethtool_cmd *cmd)
+{
+        struct pasemi_mac *mac = netdev_priv(netdev);
+        struct phy_device *phydev = mac->phydev;
+
+        return phy_ethtool_gset(phydev, cmd);
+}
+
+static void
+pasemi_mac_ethtool_get_drvinfo(struct net_device *netdev,
+                               struct ethtool_drvinfo *drvinfo)
+{
+        struct pasemi_mac *mac;
+        mac = netdev_priv(netdev);
+
+        /* clear and fill out info */
+        memset(drvinfo, 0, sizeof(struct ethtool_drvinfo));
+        strncpy(drvinfo->driver, "pasemi_mac", 12);
+        strcpy(drvinfo->version, "N/A");
+        strcpy(drvinfo->fw_version, "N/A");
+        strncpy(drvinfo->bus_info, pci_name(mac->pdev), 32);
+}
+
+static u32
+pasemi_mac_ethtool_get_msglevel(struct net_device *netdev)
+{
+        struct pasemi_mac *mac = netdev_priv(netdev);
+        return mac->msg_enable;
+}
+
+static void
+pasemi_mac_ethtool_set_msglevel(struct net_device *netdev,
+                                u32 level)
+{
+        struct pasemi_mac *mac = netdev_priv(netdev);
+        mac->msg_enable = level;
+}
+
+
+static void
+pasemi_mac_ethtool_get_ringparam(struct net_device *netdev,
+                                 struct ethtool_ringparam *ering)
+{
+        struct pasemi_mac *mac = netdev->priv;
+
+        ering->tx_max_pending = TX_RING_SIZE/2;
+        ering->tx_pending = RING_USED(mac->tx)/2;
+        ering->rx_max_pending = RX_RING_SIZE/4;
+        ering->rx_pending = RING_USED(mac->rx)/4;
+}
+
+static int pasemi_mac_get_sset_count(struct net_device *netdev, int sset)
+{
+        switch (sset) {
+        case ETH_SS_STATS:
+                return ARRAY_SIZE(ethtool_stats_keys);
+        default:
+                return -EOPNOTSUPP;
+        }
+}
+
+static void pasemi_mac_get_ethtool_stats(struct net_device *netdev,
+                struct ethtool_stats *stats, u64 *data)
+{
+        struct pasemi_mac *mac = netdev->priv;
+        int i;
+
+        data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if))
+                        >> PAS_DMA_RXINT_RCMDSTA_DROPS_S;
+        for (i = 0; i < 32; i++)
+                data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i));
+}
+
+static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset,
+                                   u8 *data)
+{
+        memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
+}
+
+const struct ethtool_ops pasemi_mac_ethtool_ops = {
+        .get_settings           = pasemi_mac_ethtool_get_settings,
+        .get_drvinfo            = pasemi_mac_ethtool_get_drvinfo,
+        .get_msglevel           = pasemi_mac_ethtool_get_msglevel,
+        .set_msglevel           = pasemi_mac_ethtool_set_msglevel,
+        .get_link               = ethtool_op_get_link,
+        .get_ringparam          = pasemi_mac_ethtool_get_ringparam,
+        .get_strings            = pasemi_mac_get_strings,
+        .get_sset_count         = pasemi_mac_get_sset_count,
+        .get_ethtool_stats      = pasemi_mac_get_ethtool_stats,
+};
+