1 files changed, 132 insertions, 0 deletions

diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
new file mode 100644
index 000000000000..66dd5bf1eaa9
--- /dev/null
+++ b/drivers/net/sfc/xfp_phy.c
@@ -0,0 +1,132 @@
+/****************************************************************************
+ * Driver for Solarflare Solarstorm network controllers and boards
+ * 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
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+/*
+ * Driver for XFP optical PHYs (plus some support specific to the Quake 2032)
+ * See www.amcc.com for details (search for qt2032)
+ */
+
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include "efx.h"
+#include "gmii.h"
+#include "mdio_10g.h"
+#include "xenpack.h"
+#include "phy.h"
+#include "mac.h"
+
+#define XFP_REQUIRED_DEVS (MDIO_MMDREG_DEVS0_PCS |      \
+                           MDIO_MMDREG_DEVS0_PMAPMD |   \
+                           MDIO_MMDREG_DEVS0_PHYXS)
+
+/****************************************************************************/
+/* Quake-specific MDIO registers */
+#define MDIO_QUAKE_LED0_REG     (0xD006)
+
+void xfp_set_led(struct efx_nic *p, int led, int mode)
+{
+        int addr = MDIO_QUAKE_LED0_REG + led;
+        mdio_clause45_write(p, p->mii.phy_id, MDIO_MMD_PMAPMD, addr,
+                            mode);
+}
+
+#define XFP_MAX_RESET_TIME 500
+#define XFP_RESET_WAIT 10
+
+/* Reset the PHYXS MMD. This is documented (for the Quake PHY) as doing
+ * a complete soft reset.
+ */
+static int xfp_reset_phy(struct efx_nic *efx)
+{
+        int rc;
+
+        rc = mdio_clause45_reset_mmd(efx, MDIO_MMD_PHYXS,
+                                     XFP_MAX_RESET_TIME / XFP_RESET_WAIT,
+                                     XFP_RESET_WAIT);
+        if (rc < 0)
+                goto fail;
+
+        /* Wait 250ms for the PHY to complete bootup */
+        msleep(250);
+
+        /* Check that all the MMDs we expect are present and responding. We
+         * expect faults on some if the link is down, but not on the PHY XS */
+        rc = mdio_clause45_check_mmds(efx, XFP_REQUIRED_DEVS,
+                                      MDIO_MMDREG_DEVS0_PHYXS);
+        if (rc < 0)
+                goto fail;
+
+        efx->board_info.init_leds(efx);
+
+        return rc;
+
+ fail:
+        EFX_ERR(efx, "XFP: reset timed out!\n");
+        return rc;
+}
+
+static int xfp_phy_init(struct efx_nic *efx)
+{
+        u32 devid = mdio_clause45_read_id(efx, MDIO_MMD_PHYXS);
+        int rc;
+
+        EFX_INFO(efx, "XFP: PHY ID reg %x (OUI %x model %x revision"
+                 " %x)\n", devid, MDIO_ID_OUI(devid), MDIO_ID_MODEL(devid),
+                 MDIO_ID_REV(devid));
+
+        rc = xfp_reset_phy(efx);
+
+        EFX_INFO(efx, "XFP: PHY init %s.\n",
+                 rc ? "failed" : "successful");
+
+        return rc;
+}
+
+static void xfp_phy_clear_interrupt(struct efx_nic *efx)
+{
+        xenpack_clear_lasi_irqs(efx);
+}
+
+static int xfp_link_ok(struct efx_nic *efx)
+{
+        return mdio_clause45_links_ok(efx, XFP_REQUIRED_DEVS);
+}
+
+static int xfp_phy_check_hw(struct efx_nic *efx)
+{
+        int rc = 0;
+        int link_up = xfp_link_ok(efx);
+        /* Simulate a PHY event if link state has changed */
+        if (link_up != efx->link_up)
+                falcon_xmac_sim_phy_event(efx);
+
+        return rc;
+}
+
+static void xfp_phy_reconfigure(struct efx_nic *efx)
+{
+        efx->link_up = xfp_link_ok(efx);
+        efx->link_options = GM_LPA_10000FULL;
+}
+
+
+static void xfp_phy_fini(struct efx_nic *efx)
+{
+        /* Clobber the LED if it was blinking */
+        efx->board_info.blink(efx, 0);
+}
+
+struct efx_phy_operations falcon_xfp_phy_ops = {
+        .init            = xfp_phy_init,
+        .reconfigure     = xfp_phy_reconfigure,
+        .check_hw        = xfp_phy_check_hw,
+        .fini            = xfp_phy_fini,
+        .clear_interrupt = xfp_phy_clear_interrupt,
+        .reset_xaui      = efx_port_dummy_op_void,
+        .mmds            = XFP_REQUIRED_DEVS,
+};