sfc: Remove MII extension cruft

Replace efx_nic::link_options bitfield with link_speed (speed in
Mbit/s) and link_fd (full duplex flag).

Remove broken auto-negotiation functions.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 18 insertions, 174 deletions

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index bba11490ef41..957a6320bbcb 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -21,7 +21,6 @@
 #include <linux/ethtool.h>
 #include <linux/topology.h>
 #include "net_driver.h"
-#include "gmii.h"
 #include "ethtool.h"
 #include "tx.h"
 #include "rx.h"
@@ -551,26 +550,8 @@ static void efx_link_status_changed(struct efx_nic *efx)
 
         /* Status message for kernel log */
         if (efx->link_up) {
-                struct mii_if_info *gmii = &efx->mii;
-                unsigned adv, lpa;
-                /* NONE here means direct XAUI from the controller, with no
-                 * MDIO-attached device we can query. */
-                if (efx->phy_type != PHY_TYPE_NONE) {
-                        adv = gmii_advertised(gmii);
-                        lpa = gmii_lpa(gmii);
-                } else {
-                        lpa = GM_LPA_10000 | LPA_DUPLEX;
-                        adv = lpa;
-                }
-                EFX_INFO(efx, "link up at %dMbps %s-duplex "
-                         "(adv %04x lpa %04x) (MTU %d)%s\n",
-                         (efx->link_options & GM_LPA_10000 ? 10000 :
-                          (efx->link_options & GM_LPA_1000 ? 1000 :
-                           (efx->link_options & GM_LPA_100 ? 100 :
-                            10))),
-                         (efx->link_options & GM_LPA_DUPLEX ?
-                          "full" : "half"),
-                         adv, lpa,
+                EFX_INFO(efx, "link up at %uMbps %s-duplex (MTU %d)%s\n",
+                         efx->link_speed, efx->link_fd ? "full" : "half",
                          efx->net_dev->mtu,
                          (efx->promiscuous ? " [PROMISC]" : ""));
         } else {
diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c
index 931ce1410480..43d6d8b4429a 100644
--- a/drivers/net/sfc/ethtool.c
+++ b/drivers/net/sfc/ethtool.c
@@ -16,7 +16,6 @@
 #include "efx.h"
 #include "ethtool.h"
 #include "falcon.h"
-#include "gmii.h"
 #include "spi.h"
 #include "mac.h"
 
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 97cc037a10c5..448bba9eed09 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -15,11 +15,11 @@
 #include <linux/seq_file.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
+#include <linux/mii.h>
 #include "net_driver.h"
 #include "bitfield.h"
 #include "efx.h"
 #include "mac.h"
-#include "gmii.h"
 #include "spi.h"
 #include "falcon.h"
 #include "falcon_hwdefs.h"
@@ -1915,14 +1915,12 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
         int link_speed;
         bool tx_fc;
 
-        if (efx->link_options & GM_LPA_10000)
-                link_speed = 0x3;
-        else if (efx->link_options & GM_LPA_1000)
-                link_speed = 0x2;
-        else if (efx->link_options & GM_LPA_100)
-                link_speed = 0x1;
-        else
-                link_speed = 0x0;
+        switch (efx->link_speed) {
+        case 10000: link_speed = 3; break;
+        case 1000:  link_speed = 2; break;
+        case 100:   link_speed = 1; break;
+        default:    link_speed = 0; break;
+        }
         /* MAC_LINK_STATUS controls MAC backpressure but doesn't work
          * as advertised.  Disable to ensure packets are not
          * indefinitely held and TX queue can be flushed at any point
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index d4012314dd01..4a54d0933e72 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -15,7 +15,6 @@
 #include "falcon_hwdefs.h"
 #include "falcon_io.h"
 #include "mac.h"
-#include "gmii.h"
 #include "mdio_10g.h"
 #include "phy.h"
 #include "boards.h"
diff --git a/drivers/net/sfc/gmii.h b/drivers/net/sfc/gmii.h
index d25bbd1297f4..dfccaa7b573e 100644
--- a/drivers/net/sfc/gmii.h
+++ b/drivers/net/sfc/gmii.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * Driver for Solarflare Solarstorm network controllers and boards
  * Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2006 Solarflare Communications Inc.
+ * Copyright 2006-2008 Solarflare Communications Inc.
  *
  * 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
@@ -57,139 +57,4 @@
 #define ISR_POLARITY_CHG        0x0002  /* Bit 1 - polarity changed */
 #define ISR_JABBER              0x0001  /* Bit 0 - jabber */
 
-/* Logically extended advertisement register */
-#define GM_ADVERTISE_SLCT               ADVERTISE_SLCT
-#define GM_ADVERTISE_CSMA               ADVERTISE_CSMA
-#define GM_ADVERTISE_10HALF             ADVERTISE_10HALF
-#define GM_ADVERTISE_1000XFULL          ADVERTISE_1000XFULL
-#define GM_ADVERTISE_10FULL             ADVERTISE_10FULL
-#define GM_ADVERTISE_1000XHALF          ADVERTISE_1000XHALF
-#define GM_ADVERTISE_100HALF            ADVERTISE_100HALF
-#define GM_ADVERTISE_1000XPAUSE         ADVERTISE_1000XPAUSE
-#define GM_ADVERTISE_100FULL            ADVERTISE_100FULL
-#define GM_ADVERTISE_1000XPSE_ASYM      ADVERTISE_1000XPSE_ASYM
-#define GM_ADVERTISE_100BASE4           ADVERTISE_100BASE4
-#define GM_ADVERTISE_PAUSE_CAP          ADVERTISE_PAUSE_CAP
-#define GM_ADVERTISE_PAUSE_ASYM         ADVERTISE_PAUSE_ASYM
-#define GM_ADVERTISE_RESV               ADVERTISE_RESV
-#define GM_ADVERTISE_RFAULT             ADVERTISE_RFAULT
-#define GM_ADVERTISE_LPACK              ADVERTISE_LPACK
-#define GM_ADVERTISE_NPAGE              ADVERTISE_NPAGE
-#define GM_ADVERTISE_1000FULL           (ADVERTISE_1000FULL << 8)
-#define GM_ADVERTISE_1000HALF           (ADVERTISE_1000HALF << 8)
-#define GM_ADVERTISE_1000               (GM_ADVERTISE_1000FULL | \
-                                         GM_ADVERTISE_1000HALF)
-#define GM_ADVERTISE_FULL               (GM_ADVERTISE_1000FULL | \
-                                         ADVERTISE_FULL)
-#define GM_ADVERTISE_ALL                (GM_ADVERTISE_1000FULL | \
-                                         GM_ADVERTISE_1000HALF | \
-                                         ADVERTISE_ALL)
-
-/* Logically extended link partner ability register */
-#define GM_LPA_SLCT                     LPA_SLCT
-#define GM_LPA_10HALF                   LPA_10HALF
-#define GM_LPA_1000XFULL                LPA_1000XFULL
-#define GM_LPA_10FULL                   LPA_10FULL
-#define GM_LPA_1000XHALF                LPA_1000XHALF
-#define GM_LPA_100HALF                  LPA_100HALF
-#define GM_LPA_1000XPAUSE               LPA_1000XPAUSE
-#define GM_LPA_100FULL                  LPA_100FULL
-#define GM_LPA_1000XPAUSE_ASYM          LPA_1000XPAUSE_ASYM
-#define GM_LPA_100BASE4                 LPA_100BASE4
-#define GM_LPA_PAUSE_CAP                LPA_PAUSE_CAP
-#define GM_LPA_PAUSE_ASYM               LPA_PAUSE_ASYM
-#define GM_LPA_RESV                     LPA_RESV
-#define GM_LPA_RFAULT                   LPA_RFAULT
-#define GM_LPA_LPACK                    LPA_LPACK
-#define GM_LPA_NPAGE                    LPA_NPAGE
-#define GM_LPA_1000FULL                 (LPA_1000FULL << 6)
-#define GM_LPA_1000HALF                 (LPA_1000HALF << 6)
-#define GM_LPA_10000FULL                0x00040000
-#define GM_LPA_10000HALF                0x00080000
-#define GM_LPA_DUPLEX                   (GM_LPA_1000FULL | GM_LPA_10000FULL \
-                                         | LPA_DUPLEX)
-#define GM_LPA_10                       (LPA_10FULL | LPA_10HALF)
-#define GM_LPA_100                      LPA_100
-#define GM_LPA_1000                     (GM_LPA_1000FULL | GM_LPA_1000HALF)
-#define GM_LPA_10000                    (GM_LPA_10000FULL | GM_LPA_10000HALF)
-
-/* Retrieve GMII autonegotiation advertised abilities
- *
- * The MII advertisment register (MII_ADVERTISE) is logically extended
- * to include advertisement bits ADVERTISE_1000FULL and
- * ADVERTISE_1000HALF from MII_CTRL1000.  The result can be tested
- * against the GM_ADVERTISE_xxx constants.
- */
-static inline unsigned int gmii_advertised(struct mii_if_info *gmii)
-{
-        unsigned int advertise;
-        unsigned int ctrl1000;
-
-        advertise = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_ADVERTISE);
-        ctrl1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_CTRL1000);
-        return (((ctrl1000 << 8) & GM_ADVERTISE_1000) | advertise);
-}
-
-/* Retrieve GMII autonegotiation link partner abilities
- *
- * The MII link partner ability register (MII_LPA) is logically
- * extended by adding bits LPA_1000HALF and LPA_1000FULL from
- * MII_STAT1000.  The result can be tested against the GM_LPA_xxx
- * constants.
- */
-static inline unsigned int gmii_lpa(struct mii_if_info *gmii)
-{
-        unsigned int lpa;
-        unsigned int stat1000;
-
-        lpa = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_LPA);
-        stat1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_STAT1000);
-        return (((stat1000 << 6) & GM_LPA_1000) | lpa);
-}
-
-/* Calculate GMII autonegotiated link technology
- *
- * "negotiated" should be the result of gmii_advertised() logically
- * ANDed with the result of gmii_lpa().
- *
- * "tech" will be negotiated with the unused bits masked out.  For
- * example, if both ends of the link are capable of both
- * GM_LPA_1000FULL and GM_LPA_100FULL, GM_LPA_100FULL will be masked
- * out.
- */
-static inline unsigned int gmii_nway_result(unsigned int negotiated)
-{
-        unsigned int other_bits;
-
-        /* Mask out the speed and duplexity bits */
-        other_bits = negotiated & ~(GM_LPA_10 | GM_LPA_100 | GM_LPA_1000);
-
-        if (negotiated & GM_LPA_1000FULL)
-                return (other_bits | GM_LPA_1000FULL);
-        else if (negotiated & GM_LPA_1000HALF)
-                return (other_bits | GM_LPA_1000HALF);
-        else
-                return (other_bits | mii_nway_result(negotiated));
-}
-
-/* Calculate GMII non-autonegotiated link technology
- *
- * This provides an equivalent to gmii_nway_result for the case when
- * autonegotiation is disabled.
- */
-static inline unsigned int gmii_forced_result(unsigned int bmcr)
-{
-        unsigned int result;
-        int full_duplex;
-
-        full_duplex = bmcr & BMCR_FULLDPLX;
-        if (bmcr & BMCR_SPEED1000)
-                result = full_duplex ? GM_LPA_1000FULL : GM_LPA_1000HALF;
-        else if (bmcr & BMCR_SPEED100)
-                result = full_duplex ? GM_LPA_100FULL : GM_LPA_100HALF;
-        else
-                result = full_duplex ? GM_LPA_10FULL : GM_LPA_10HALF;
-        return result;
-}
-
 #endif /* EFX_GMII_H */
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index abff9084a986..6cac5ed427ba 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -694,7 +694,8 @@ union efx_multicast_hash {
  * @mii: PHY interface
  * @phy_mode: PHY operating mode. Serialised by @mac_lock.
  * @link_up: Link status
- * @link_options: Link options (MII/GMII format)
+ * @link_fd: Link is full duplex
+ * @link_speed: Link speed (Mbps)
  * @n_link_state_changes: Number of times the link has changed state
  * @promiscuous: Promiscuous flag. Protected by netif_tx_lock.
  * @multicast_hash: Multicast hash table
@@ -772,7 +773,8 @@ struct efx_nic {
         enum efx_phy_mode phy_mode;
 
         bool link_up;
-        unsigned int link_options;
+        bool link_fd;
+        unsigned int link_speed;
         unsigned int n_link_state_changes;
 
         bool promiscuous;
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 8d41c29b9d7b..3fa7ccb08d50 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -10,7 +10,6 @@
 #include <linux/delay.h>
 #include <linux/seq_file.h>
 #include "efx.h"
-#include "gmii.h"
 #include "mdio_10g.h"
 #include "falcon.h"
 #include "phy.h"
@@ -362,7 +361,8 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx)
         phy_data->loopback_mode = efx->loopback_mode;
         phy_data->phy_mode = efx->phy_mode;
         efx->link_up = tenxpress_link_ok(efx, false);
-        efx->link_options = GM_LPA_10000FULL;
+        efx->link_speed = 10000;
+        efx->link_fd = true;
 }
 
 static void tenxpress_phy_clear_interrupt(struct efx_nic *efx)
diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
index 91f024662101..971a24b59fa7 100644
--- a/drivers/net/sfc/xfp_phy.c
+++ b/drivers/net/sfc/xfp_phy.c
@@ -14,7 +14,6 @@
 #include <linux/timer.h>
 #include <linux/delay.h>
 #include "efx.h"
-#include "gmii.h"
 #include "mdio_10g.h"
 #include "xenpack.h"
 #include "phy.h"
@@ -154,7 +153,8 @@ static void xfp_phy_reconfigure(struct efx_nic *efx)
 
         phy_data->phy_mode = efx->phy_mode;
         efx->link_up = xfp_link_ok(efx);
-        efx->link_options = GM_LPA_10000FULL;
+        efx->link_speed = 10000;
+        efx->link_fd = true;
 }