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Diffstat (limited to 'linux-2.6.29.6/drivers/net/sfc/mdio_10g.c')
-rw-r--r--linux-2.6.29.6/drivers/net/sfc/mdio_10g.c566
1 files changed, 0 insertions, 566 deletions
diff --git a/linux-2.6.29.6/drivers/net/sfc/mdio_10g.c b/linux-2.6.29.6/drivers/net/sfc/mdio_10g.c
deleted file mode 100644
index f9e2f95c3..000000000
--- a/linux-2.6.29.6/drivers/net/sfc/mdio_10g.c
+++ /dev/null
@@ -1,566 +0,0 @@
-/****************************************************************************
- * 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.
- */
-/*
- * Useful functions for working with MDIO clause 45 PHYs
- */
-#include <linux/types.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-#include "net_driver.h"
-#include "mdio_10g.h"
-#include "boards.h"
-#include "workarounds.h"
-
-int mdio_clause45_reset_mmd(struct efx_nic *port, int mmd,
- int spins, int spintime)
-{
- u32 ctrl;
- int phy_id = port->mii.phy_id;
-
- /* Catch callers passing values in the wrong units (or just silly) */
- EFX_BUG_ON_PARANOID(spins * spintime >= 5000);
-
- mdio_clause45_write(port, phy_id, mmd, MDIO_MMDREG_CTRL1,
- (1 << MDIO_MMDREG_CTRL1_RESET_LBN));
- /* Wait for the reset bit to clear. */
- do {
- msleep(spintime);
- ctrl = mdio_clause45_read(port, phy_id, mmd, MDIO_MMDREG_CTRL1);
- spins--;
-
- } while (spins && (ctrl & (1 << MDIO_MMDREG_CTRL1_RESET_LBN)));
-
- return spins ? spins : -ETIMEDOUT;
-}
-
-static int mdio_clause45_check_mmd(struct efx_nic *efx, int mmd,
- int fault_fatal)
-{
- int status;
- int phy_id = efx->mii.phy_id;
-
- if (LOOPBACK_INTERNAL(efx))
- return 0;
-
- if (mmd != MDIO_MMD_AN) {
- /* Read MMD STATUS2 to check it is responding. */
- status = mdio_clause45_read(efx, phy_id, mmd,
- MDIO_MMDREG_STAT2);
- if (((status >> MDIO_MMDREG_STAT2_PRESENT_LBN) &
- ((1 << MDIO_MMDREG_STAT2_PRESENT_WIDTH) - 1)) !=
- MDIO_MMDREG_STAT2_PRESENT_VAL) {
- EFX_ERR(efx, "PHY MMD %d not responding.\n", mmd);
- return -EIO;
- }
- }
-
- /* Read MMD STATUS 1 to check for fault. */
- status = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_STAT1);
- if ((status & (1 << MDIO_MMDREG_STAT1_FAULT_LBN)) != 0) {
- if (fault_fatal) {
- EFX_ERR(efx, "PHY MMD %d reporting fatal"
- " fault: status %x\n", mmd, status);
- return -EIO;
- } else {
- EFX_LOG(efx, "PHY MMD %d reporting status"
- " %x (expected)\n", mmd, status);
- }
- }
- return 0;
-}
-
-/* This ought to be ridiculous overkill. We expect it to fail rarely */
-#define MDIO45_RESET_TIME 1000 /* ms */
-#define MDIO45_RESET_ITERS 100
-
-int mdio_clause45_wait_reset_mmds(struct efx_nic *efx,
- unsigned int mmd_mask)
-{
- const int spintime = MDIO45_RESET_TIME / MDIO45_RESET_ITERS;
- int tries = MDIO45_RESET_ITERS;
- int rc = 0;
- int in_reset;
-
- while (tries) {
- int mask = mmd_mask;
- int mmd = 0;
- int stat;
- in_reset = 0;
- while (mask) {
- if (mask & 1) {
- stat = mdio_clause45_read(efx,
- efx->mii.phy_id,
- mmd,
- MDIO_MMDREG_CTRL1);
- if (stat < 0) {
- EFX_ERR(efx, "failed to read status of"
- " MMD %d\n", mmd);
- return -EIO;
- }
- if (stat & (1 << MDIO_MMDREG_CTRL1_RESET_LBN))
- in_reset |= (1 << mmd);
- }
- mask = mask >> 1;
- mmd++;
- }
- if (!in_reset)
- break;
- tries--;
- msleep(spintime);
- }
- if (in_reset != 0) {
- EFX_ERR(efx, "not all MMDs came out of reset in time."
- " MMDs still in reset: %x\n", in_reset);
- rc = -ETIMEDOUT;
- }
- return rc;
-}
-
-int mdio_clause45_check_mmds(struct efx_nic *efx,
- unsigned int mmd_mask, unsigned int fatal_mask)
-{
- u32 devices;
- int mmd = 0, probe_mmd;
-
- /* Historically we have probed the PHYXS to find out what devices are
- * present,but that doesn't work so well if the PHYXS isn't expected
- * to exist, if so just find the first item in the list supplied. */
- probe_mmd = (mmd_mask & MDIO_MMDREG_DEVS_PHYXS) ? MDIO_MMD_PHYXS :
- __ffs(mmd_mask);
- devices = (mdio_clause45_read(efx, efx->mii.phy_id,
- probe_mmd, MDIO_MMDREG_DEVS0) |
- mdio_clause45_read(efx, efx->mii.phy_id,
- probe_mmd, MDIO_MMDREG_DEVS1) << 16);
-
- /* Check all the expected MMDs are present */
- if (devices < 0) {
- EFX_ERR(efx, "failed to read devices present\n");
- return -EIO;
- }
- if ((devices & mmd_mask) != mmd_mask) {
- EFX_ERR(efx, "required MMDs not present: got %x, "
- "wanted %x\n", devices, mmd_mask);
- return -ENODEV;
- }
- EFX_TRACE(efx, "Devices present: %x\n", devices);
-
- /* Check all required MMDs are responding and happy. */
- while (mmd_mask) {
- if (mmd_mask & 1) {
- int fault_fatal = fatal_mask & 1;
- if (mdio_clause45_check_mmd(efx, mmd, fault_fatal))
- return -EIO;
- }
- mmd_mask = mmd_mask >> 1;
- fatal_mask = fatal_mask >> 1;
- mmd++;
- }
-
- return 0;
-}
-
-bool mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask)
-{
- int phy_id = efx->mii.phy_id;
- u32 reg;
- bool ok = true;
- int mmd = 0;
-
- /* If the port is in loopback, then we should only consider a subset
- * of mmd's */
- if (LOOPBACK_INTERNAL(efx))
- return true;
- else if (efx->loopback_mode == LOOPBACK_NETWORK)
- return false;
- else if (efx_phy_mode_disabled(efx->phy_mode))
- return false;
- else if (efx->loopback_mode == LOOPBACK_PHYXS)
- mmd_mask &= ~(MDIO_MMDREG_DEVS_PHYXS |
- MDIO_MMDREG_DEVS_PCS |
- MDIO_MMDREG_DEVS_PMAPMD |
- MDIO_MMDREG_DEVS_AN);
- else if (efx->loopback_mode == LOOPBACK_PCS)
- mmd_mask &= ~(MDIO_MMDREG_DEVS_PCS |
- MDIO_MMDREG_DEVS_PMAPMD |
- MDIO_MMDREG_DEVS_AN);
- else if (efx->loopback_mode == LOOPBACK_PMAPMD)
- mmd_mask &= ~(MDIO_MMDREG_DEVS_PMAPMD |
- MDIO_MMDREG_DEVS_AN);
-
- if (!mmd_mask) {
- /* Use presence of XGMII faults in leui of link state */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS,
- MDIO_PHYXS_STATUS2);
- return !(reg & (1 << MDIO_PHYXS_STATUS2_RX_FAULT_LBN));
- }
-
- while (mmd_mask) {
- if (mmd_mask & 1) {
- /* Double reads because link state is latched, and a
- * read moves the current state into the register */
- reg = mdio_clause45_read(efx, phy_id,
- mmd, MDIO_MMDREG_STAT1);
- reg = mdio_clause45_read(efx, phy_id,
- mmd, MDIO_MMDREG_STAT1);
- ok = ok && (reg & (1 << MDIO_MMDREG_STAT1_LINK_LBN));
- }
- mmd_mask = (mmd_mask >> 1);
- mmd++;
- }
- return ok;
-}
-
-void mdio_clause45_transmit_disable(struct efx_nic *efx)
-{
- mdio_clause45_set_flag(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_TXDIS, MDIO_MMDREG_TXDIS_GLOBAL_LBN,
- efx->phy_mode & PHY_MODE_TX_DISABLED);
-}
-
-void mdio_clause45_phy_reconfigure(struct efx_nic *efx)
-{
- int phy_id = efx->mii.phy_id;
-
- mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1, MDIO_PMAPMD_CTRL1_LBACK_LBN,
- efx->loopback_mode == LOOPBACK_PMAPMD);
- mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_PCS,
- MDIO_MMDREG_CTRL1, MDIO_MMDREG_CTRL1_LBACK_LBN,
- efx->loopback_mode == LOOPBACK_PCS);
- mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_PHYXS,
- MDIO_MMDREG_CTRL1, MDIO_MMDREG_CTRL1_LBACK_LBN,
- efx->loopback_mode == LOOPBACK_NETWORK);
-}
-
-static void mdio_clause45_set_mmd_lpower(struct efx_nic *efx,
- int lpower, int mmd)
-{
- int phy = efx->mii.phy_id;
- int stat = mdio_clause45_read(efx, phy, mmd, MDIO_MMDREG_STAT1);
-
- EFX_TRACE(efx, "Setting low power mode for MMD %d to %d\n",
- mmd, lpower);
-
- if (stat & (1 << MDIO_MMDREG_STAT1_LPABLE_LBN)) {
- mdio_clause45_set_flag(efx, phy, mmd, MDIO_MMDREG_CTRL1,
- MDIO_MMDREG_CTRL1_LPOWER_LBN, lpower);
- }
-}
-
-void mdio_clause45_set_mmds_lpower(struct efx_nic *efx,
- int low_power, unsigned int mmd_mask)
-{
- int mmd = 0;
- mmd_mask &= ~MDIO_MMDREG_DEVS_AN;
- while (mmd_mask) {
- if (mmd_mask & 1)
- mdio_clause45_set_mmd_lpower(efx, low_power, mmd);
- mmd_mask = (mmd_mask >> 1);
- mmd++;
- }
-}
-
-static u32 mdio_clause45_get_an(struct efx_nic *efx, u16 addr)
-{
- int phy_id = efx->mii.phy_id;
- u32 result = 0;
- int reg;
-
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN, addr);
- if (reg & ADVERTISE_10HALF)
- result |= ADVERTISED_10baseT_Half;
- if (reg & ADVERTISE_10FULL)
- result |= ADVERTISED_10baseT_Full;
- if (reg & ADVERTISE_100HALF)
- result |= ADVERTISED_100baseT_Half;
- if (reg & ADVERTISE_100FULL)
- result |= ADVERTISED_100baseT_Full;
- return result;
-}
-
-/**
- * mdio_clause45_get_settings - Read (some of) the PHY settings over MDIO.
- * @efx: Efx NIC
- * @ecmd: Buffer for settings
- *
- * On return the 'port', 'speed', 'supported' and 'advertising' fields of
- * ecmd have been filled out.
- */
-void mdio_clause45_get_settings(struct efx_nic *efx,
- struct ethtool_cmd *ecmd)
-{
- mdio_clause45_get_settings_ext(efx, ecmd, 0, 0);
-}
-
-/**
- * mdio_clause45_get_settings_ext - Read (some of) the PHY settings over MDIO.
- * @efx: Efx NIC
- * @ecmd: Buffer for settings
- * @xnp: Advertised Extended Next Page state
- * @xnp_lpa: Link Partner's advertised XNP state
- *
- * On return the 'port', 'speed', 'supported' and 'advertising' fields of
- * ecmd have been filled out.
- */
-void mdio_clause45_get_settings_ext(struct efx_nic *efx,
- struct ethtool_cmd *ecmd,
- u32 npage_adv, u32 npage_lpa)
-{
- int phy_id = efx->mii.phy_id;
- int reg;
-
- ecmd->transceiver = XCVR_INTERNAL;
- ecmd->phy_address = phy_id;
-
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL2);
- switch (reg & MDIO_PMAPMD_CTRL2_TYPE_MASK) {
- case MDIO_PMAPMD_CTRL2_10G_BT:
- case MDIO_PMAPMD_CTRL2_1G_BT:
- case MDIO_PMAPMD_CTRL2_100_BT:
- case MDIO_PMAPMD_CTRL2_10_BT:
- ecmd->port = PORT_TP;
- ecmd->supported = SUPPORTED_TP;
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_SPEED);
- if (reg & (1 << MDIO_MMDREG_SPEED_10G_LBN))
- ecmd->supported |= SUPPORTED_10000baseT_Full;
- if (reg & (1 << MDIO_MMDREG_SPEED_1000M_LBN))
- ecmd->supported |= (SUPPORTED_1000baseT_Full |
- SUPPORTED_1000baseT_Half);
- if (reg & (1 << MDIO_MMDREG_SPEED_100M_LBN))
- ecmd->supported |= (SUPPORTED_100baseT_Full |
- SUPPORTED_100baseT_Half);
- if (reg & (1 << MDIO_MMDREG_SPEED_10M_LBN))
- ecmd->supported |= (SUPPORTED_10baseT_Full |
- SUPPORTED_10baseT_Half);
- ecmd->advertising = ADVERTISED_TP;
- break;
-
- /* We represent CX4 as fibre in the absence of anything better */
- case MDIO_PMAPMD_CTRL2_10G_CX4:
- /* All the other defined modes are flavours of optical */
- default:
- ecmd->port = PORT_FIBRE;
- ecmd->supported = SUPPORTED_FIBRE;
- ecmd->advertising = ADVERTISED_FIBRE;
- break;
- }
-
- if (efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) {
- ecmd->supported |= SUPPORTED_Autoneg;
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1);
- if (reg & BMCR_ANENABLE) {
- ecmd->autoneg = AUTONEG_ENABLE;
- ecmd->advertising |=
- ADVERTISED_Autoneg |
- mdio_clause45_get_an(efx, MDIO_AN_ADVERTISE) |
- npage_adv;
- } else
- ecmd->autoneg = AUTONEG_DISABLE;
- } else
- ecmd->autoneg = AUTONEG_DISABLE;
-
- if (ecmd->autoneg) {
- /* If AN is complete, report best common mode,
- * otherwise report best advertised mode. */
- u32 modes = 0;
- if (mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_STAT1) &
- (1 << MDIO_AN_STATUS_AN_DONE_LBN))
- modes = (ecmd->advertising &
- (mdio_clause45_get_an(efx, MDIO_AN_LPA) |
- npage_lpa));
- if (modes == 0)
- modes = ecmd->advertising;
-
- if (modes & ADVERTISED_10000baseT_Full) {
- ecmd->speed = SPEED_10000;
- ecmd->duplex = DUPLEX_FULL;
- } else if (modes & (ADVERTISED_1000baseT_Full |
- ADVERTISED_1000baseT_Half)) {
- ecmd->speed = SPEED_1000;
- ecmd->duplex = !!(modes & ADVERTISED_1000baseT_Full);
- } else if (modes & (ADVERTISED_100baseT_Full |
- ADVERTISED_100baseT_Half)) {
- ecmd->speed = SPEED_100;
- ecmd->duplex = !!(modes & ADVERTISED_100baseT_Full);
- } else {
- ecmd->speed = SPEED_10;
- ecmd->duplex = !!(modes & ADVERTISED_10baseT_Full);
- }
- } else {
- /* Report forced settings */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1);
- ecmd->speed = (((reg & BMCR_SPEED1000) ? 100 : 1) *
- ((reg & BMCR_SPEED100) ? 100 : 10));
- ecmd->duplex = (reg & BMCR_FULLDPLX ||
- ecmd->speed == SPEED_10000);
- }
-}
-
-/**
- * mdio_clause45_set_settings - Set (some of) the PHY settings over MDIO.
- * @efx: Efx NIC
- * @ecmd: New settings
- */
-int mdio_clause45_set_settings(struct efx_nic *efx,
- struct ethtool_cmd *ecmd)
-{
- int phy_id = efx->mii.phy_id;
- struct ethtool_cmd prev;
- u32 required;
- int reg;
-
- efx->phy_op->get_settings(efx, &prev);
-
- if (ecmd->advertising == prev.advertising &&
- ecmd->speed == prev.speed &&
- ecmd->duplex == prev.duplex &&
- ecmd->port == prev.port &&
- ecmd->autoneg == prev.autoneg)
- return 0;
-
- /* We can only change these settings for -T PHYs */
- if (prev.port != PORT_TP || ecmd->port != PORT_TP)
- return -EINVAL;
-
- /* Check that PHY supports these settings */
- if (ecmd->autoneg) {
- required = SUPPORTED_Autoneg;
- } else if (ecmd->duplex) {
- switch (ecmd->speed) {
- case SPEED_10: required = SUPPORTED_10baseT_Full; break;
- case SPEED_100: required = SUPPORTED_100baseT_Full; break;
- default: return -EINVAL;
- }
- } else {
- switch (ecmd->speed) {
- case SPEED_10: required = SUPPORTED_10baseT_Half; break;
- case SPEED_100: required = SUPPORTED_100baseT_Half; break;
- default: return -EINVAL;
- }
- }
- required |= ecmd->advertising;
- if (required & ~prev.supported)
- return -EINVAL;
-
- if (ecmd->autoneg) {
- bool xnp = (ecmd->advertising & ADVERTISED_10000baseT_Full
- || EFX_WORKAROUND_13204(efx));
-
- /* Set up the base page */
- reg = ADVERTISE_CSMA;
- if (ecmd->advertising & ADVERTISED_10baseT_Half)
- reg |= ADVERTISE_10HALF;
- if (ecmd->advertising & ADVERTISED_10baseT_Full)
- reg |= ADVERTISE_10FULL;
- if (ecmd->advertising & ADVERTISED_100baseT_Half)
- reg |= ADVERTISE_100HALF;
- if (ecmd->advertising & ADVERTISED_100baseT_Full)
- reg |= ADVERTISE_100FULL;
- if (xnp)
- reg |= ADVERTISE_RESV;
- else if (ecmd->advertising & (ADVERTISED_1000baseT_Half |
- ADVERTISED_1000baseT_Full))
- reg |= ADVERTISE_NPAGE;
- reg |= efx_fc_advertise(efx->wanted_fc);
- mdio_clause45_write(efx, phy_id, MDIO_MMD_AN,
- MDIO_AN_ADVERTISE, reg);
-
- /* Set up the (extended) next page if necessary */
- if (efx->phy_op->set_npage_adv)
- efx->phy_op->set_npage_adv(efx, ecmd->advertising);
-
- /* Enable and restart AN */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1);
- reg |= BMCR_ANENABLE;
- if (!(EFX_WORKAROUND_15195(efx) &&
- LOOPBACK_MASK(efx) & efx->phy_op->loopbacks))
- reg |= BMCR_ANRESTART;
- if (xnp)
- reg |= 1 << MDIO_AN_CTRL_XNP_LBN;
- else
- reg &= ~(1 << MDIO_AN_CTRL_XNP_LBN);
- mdio_clause45_write(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1, reg);
- } else {
- /* Disable AN */
- mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1,
- __ffs(BMCR_ANENABLE), false);
-
- /* Set the basic control bits */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1);
- reg &= ~(BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX |
- 0x003c);
- if (ecmd->speed == SPEED_100)
- reg |= BMCR_SPEED100;
- if (ecmd->duplex)
- reg |= BMCR_FULLDPLX;
- mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1, reg);
- }
-
- return 0;
-}
-
-void mdio_clause45_set_pause(struct efx_nic *efx)
-{
- int phy_id = efx->mii.phy_id;
- int reg;
-
- if (efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) {
- /* Set pause capability advertising */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
- MDIO_AN_ADVERTISE);
- reg &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
- reg |= efx_fc_advertise(efx->wanted_fc);
- mdio_clause45_write(efx, phy_id, MDIO_MMD_AN,
- MDIO_AN_ADVERTISE, reg);
-
- /* Restart auto-negotiation */
- reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1);
- if (reg & BMCR_ANENABLE) {
- reg |= BMCR_ANRESTART;
- mdio_clause45_write(efx, phy_id, MDIO_MMD_AN,
- MDIO_MMDREG_CTRL1, reg);
- }
- }
-}
-
-enum efx_fc_type mdio_clause45_get_pause(struct efx_nic *efx)
-{
- int phy_id = efx->mii.phy_id;
- int lpa;
-
- if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)))
- return efx->wanted_fc;
- lpa = mdio_clause45_read(efx, phy_id, MDIO_MMD_AN, MDIO_AN_LPA);
- return efx_fc_resolve(efx->wanted_fc, lpa);
-}
-
-void mdio_clause45_set_flag(struct efx_nic *efx, u8 prt, u8 dev,
- u16 addr, int bit, bool sense)
-{
- int old_val = mdio_clause45_read(efx, prt, dev, addr);
- int new_val;
-
- if (sense)
- new_val = old_val | (1 << bit);
- else
- new_val = old_val & ~(1 << bit);
- if (old_val != new_val)
- mdio_clause45_write(efx, prt, dev, addr, new_val);
-}
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