New driver "sfc" for Solarstorm SFC4000 controller.
The driver supports the 10Xpress PHY and XFP modules on our reference
designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and
SMC10GPCIe-10BT.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
new file mode 100644
index 0000000..66dd5bf
--- /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,
+};