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Diffstat (limited to 'drivers/net/sfc/mdio_10g.c')
-rw-r--r--drivers/net/sfc/mdio_10g.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
deleted file mode 100644
index c4f540e93b7..00000000000
--- a/drivers/net/sfc/mdio_10g.c
+++ /dev/null
@@ -1,360 +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"
-
-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;
-
- /* 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)
-{
- int devices, mmd = 0;
- int 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_DEVS0_PHYXS) ? MDIO_MMD_PHYXS :
- __ffs(mmd_mask);
- devices = mdio_clause45_read(efx, efx->mii.phy_id,
- probe_mmd, MDIO_MMDREG_DEVS0);
-
- /* 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;
-}
-
-int mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask)
-{
- int phy_id = efx->mii.phy_id;
- int status;
- int ok = 1;
- int mmd = 0;
- int good;
-
- /* If the port is in loopback, then we should only consider a subset
- * of mmd's */
- if (LOOPBACK_INTERNAL(efx))
- return 1;
- else if (efx->loopback_mode == LOOPBACK_NETWORK)
- return 0;
- else if (efx->loopback_mode == LOOPBACK_PHYXS)
- mmd_mask &= ~(MDIO_MMDREG_DEVS0_PHYXS |
- MDIO_MMDREG_DEVS0_PCS |
- MDIO_MMDREG_DEVS0_PMAPMD);
- else if (efx->loopback_mode == LOOPBACK_PCS)
- mmd_mask &= ~(MDIO_MMDREG_DEVS0_PCS |
- MDIO_MMDREG_DEVS0_PMAPMD);
- else if (efx->loopback_mode == LOOPBACK_PMAPMD)
- mmd_mask &= ~MDIO_MMDREG_DEVS0_PMAPMD;
-
- while (mmd_mask) {
- if (mmd_mask & 1) {
- /* Double reads because link state is latched, and a
- * read moves the current state into the register */
- status = mdio_clause45_read(efx, phy_id,
- mmd, MDIO_MMDREG_STAT1);
- status = mdio_clause45_read(efx, phy_id,
- mmd, MDIO_MMDREG_STAT1);
-
- good = status & (1 << MDIO_MMDREG_STAT1_LINK_LBN);
- ok = ok && good;
- }
- mmd_mask = (mmd_mask >> 1);
- mmd++;
- }
- return ok;
-}
-
-void mdio_clause45_transmit_disable(struct efx_nic *efx)
-{
- int phy_id = efx->mii.phy_id;
- int ctrl1, ctrl2;
-
- ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_TXDIS);
- if (efx->tx_disabled)
- ctrl2 |= (1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN);
- else
- ctrl1 &= ~(1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN);
- if (ctrl1 != ctrl2)
- mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_TXDIS, ctrl2);
-}
-
-void mdio_clause45_phy_reconfigure(struct efx_nic *efx)
-{
- int phy_id = efx->mii.phy_id;
- int ctrl1, ctrl2;
-
- /* Handle (with debouncing) PMA/PMD loopback */
- ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1);
-
- if (efx->loopback_mode == LOOPBACK_PMAPMD)
- ctrl2 |= (1 << MDIO_PMAPMD_CTRL1_LBACK_LBN);
- else
- ctrl2 &= ~(1 << MDIO_PMAPMD_CTRL1_LBACK_LBN);
-
- if (ctrl1 != ctrl2)
- mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
- MDIO_MMDREG_CTRL1, ctrl2);
-
- /* Handle (with debouncing) PCS loopback */
- ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS,
- MDIO_MMDREG_CTRL1);
- if (efx->loopback_mode == LOOPBACK_PCS)
- ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
- else
- ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
-
- if (ctrl1 != ctrl2)
- mdio_clause45_write(efx, phy_id, MDIO_MMD_PCS,
- MDIO_MMDREG_CTRL1, ctrl2);
-
- /* Handle (with debouncing) PHYXS network loopback */
- ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS,
- MDIO_MMDREG_CTRL1);
- if (efx->loopback_mode == LOOPBACK_NETWORK)
- ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
- else
- ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
-
- if (ctrl1 != ctrl2)
- mdio_clause45_write(efx, phy_id, MDIO_MMD_PHYXS,
- MDIO_MMDREG_CTRL1, ctrl2);
-}
-
-/**
- * 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 based on the PMA type.
- */
-void mdio_clause45_get_settings(struct efx_nic *efx,
- struct ethtool_cmd *ecmd)
-{
- int pma_type;
-
- /* If no PMA is present we are presumably talking something XAUI-ish
- * like CX4. Which we report as FIBRE (see below) */
- if ((efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_PMAPMD)) == 0) {
- ecmd->speed = SPEED_10000;
- ecmd->port = PORT_FIBRE;
- ecmd->supported = SUPPORTED_FIBRE;
- ecmd->advertising = ADVERTISED_FIBRE;
- return;
- }
-
- pma_type = mdio_clause45_read(efx, efx->mii.phy_id,
- MDIO_MMD_PMAPMD, MDIO_MMDREG_CTRL2);
- pma_type &= MDIO_PMAPMD_CTRL2_TYPE_MASK;
-
- switch (pma_type) {
- /* We represent CX4 as fibre in the absence of anything
- better. */
- case MDIO_PMAPMD_CTRL2_10G_CX4:
- ecmd->speed = SPEED_10000;
- ecmd->port = PORT_FIBRE;
- ecmd->supported = SUPPORTED_FIBRE;
- ecmd->advertising = ADVERTISED_FIBRE;
- break;
- /* 10G Base-T */
- case MDIO_PMAPMD_CTRL2_10G_BT:
- ecmd->speed = SPEED_10000;
- ecmd->port = PORT_TP;
- ecmd->supported = SUPPORTED_TP | SUPPORTED_10000baseT_Full;
- ecmd->advertising = (ADVERTISED_FIBRE
- | ADVERTISED_10000baseT_Full);
- break;
- case MDIO_PMAPMD_CTRL2_1G_BT:
- ecmd->speed = SPEED_1000;
- ecmd->port = PORT_TP;
- ecmd->supported = SUPPORTED_TP | SUPPORTED_1000baseT_Full;
- ecmd->advertising = (ADVERTISED_FIBRE
- | ADVERTISED_1000baseT_Full);
- break;
- case MDIO_PMAPMD_CTRL2_100_BT:
- ecmd->speed = SPEED_100;
- ecmd->port = PORT_TP;
- ecmd->supported = SUPPORTED_TP | SUPPORTED_100baseT_Full;
- ecmd->advertising = (ADVERTISED_FIBRE
- | ADVERTISED_100baseT_Full);
- break;
- case MDIO_PMAPMD_CTRL2_10_BT:
- ecmd->speed = SPEED_10;
- ecmd->port = PORT_TP;
- ecmd->supported = SUPPORTED_TP | SUPPORTED_10baseT_Full;
- ecmd->advertising = ADVERTISED_FIBRE | ADVERTISED_10baseT_Full;
- break;
- /* All the other defined modes are flavours of
- * 10G optical */
- default:
- ecmd->speed = SPEED_10000;
- ecmd->port = PORT_FIBRE;
- ecmd->supported = SUPPORTED_FIBRE;
- ecmd->advertising = ADVERTISED_FIBRE;
- break;
- }
-}
-
-/**
- * mdio_clause45_set_settings - Set (some of) the PHY settings over MDIO.
- * @efx: Efx NIC
- * @ecmd: New settings
- *
- * Currently this just enforces that we are _not_ changing the
- * 'port', 'speed', 'supported' or 'advertising' settings as these
- * cannot be changed on any currently supported PHY.
- */
-int mdio_clause45_set_settings(struct efx_nic *efx,
- struct ethtool_cmd *ecmd)
-{
- struct ethtool_cmd tmpcmd;
- mdio_clause45_get_settings(efx, &tmpcmd);
- /* None of the current PHYs support more than one mode
- * of operation (and only 10GBT ever will), so keep things
- * simple for now */
- if ((ecmd->speed == tmpcmd.speed) && (ecmd->port == tmpcmd.port) &&
- (ecmd->supported == tmpcmd.supported) &&
- (ecmd->advertising == tmpcmd.advertising))
- return 0;
- return -EOPNOTSUPP;
-}
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