diff options
Diffstat (limited to 'drivers/net/sfc/qt202x_phy.c')
| -rw-r--r-- | drivers/net/sfc/qt202x_phy.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/drivers/net/sfc/qt202x_phy.c b/drivers/net/sfc/qt202x_phy.c deleted file mode 100644 index 3800fc791b2..00000000000 --- a/drivers/net/sfc/qt202x_phy.c +++ /dev/null @@ -1,242 +0,0 @@ -/**************************************************************************** - * Driver for Solarflare Solarstorm network controllers and boards - * Copyright 2006-2009 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 AMCC QT202x SFP+ and XFP adapters; see www.amcc.com for details - */ - -#include <linux/timer.h> -#include <linux/delay.h> -#include "efx.h" -#include "mdio_10g.h" -#include "phy.h" -#include "nic.h" - -#define QT202X_REQUIRED_DEVS (MDIO_DEVS_PCS | \ - MDIO_DEVS_PMAPMD | \ - MDIO_DEVS_PHYXS) - -#define QT202X_LOOPBACKS ((1 << LOOPBACK_PCS) | \ - (1 << LOOPBACK_PMAPMD) | \ - (1 << LOOPBACK_PHYXS_WS)) - -/****************************************************************************/ -/* Quake-specific MDIO registers */ -#define MDIO_QUAKE_LED0_REG (0xD006) - -/* QT2025C only */ -#define PCS_FW_HEARTBEAT_REG 0xd7ee -#define PCS_FW_HEARTB_LBN 0 -#define PCS_FW_HEARTB_WIDTH 8 -#define PCS_UC8051_STATUS_REG 0xd7fd -#define PCS_UC_STATUS_LBN 0 -#define PCS_UC_STATUS_WIDTH 8 -#define PCS_UC_STATUS_FW_SAVE 0x20 -#define PMA_PMD_FTX_CTRL2_REG 0xc309 -#define PMA_PMD_FTX_STATIC_LBN 13 -#define PMA_PMD_VEND1_REG 0xc001 -#define PMA_PMD_VEND1_LBTXD_LBN 15 -#define PCS_VEND1_REG 0xc000 -#define PCS_VEND1_LBTXD_LBN 5 - -void falcon_qt202x_set_led(struct efx_nic *p, int led, int mode) -{ - int addr = MDIO_QUAKE_LED0_REG + led; - efx_mdio_write(p, MDIO_MMD_PMAPMD, addr, mode); -} - -struct qt202x_phy_data { - enum efx_phy_mode phy_mode; -}; - -#define QT2022C2_MAX_RESET_TIME 500 -#define QT2022C2_RESET_WAIT 10 - -static int qt2025c_wait_reset(struct efx_nic *efx) -{ - unsigned long timeout = jiffies + 10 * HZ; - int reg, old_counter = 0; - - /* Wait for firmware heartbeat to start */ - for (;;) { - int counter; - reg = efx_mdio_read(efx, MDIO_MMD_PCS, PCS_FW_HEARTBEAT_REG); - if (reg < 0) - return reg; - counter = ((reg >> PCS_FW_HEARTB_LBN) & - ((1 << PCS_FW_HEARTB_WIDTH) - 1)); - if (old_counter == 0) - old_counter = counter; - else if (counter != old_counter) - break; - if (time_after(jiffies, timeout)) - return -ETIMEDOUT; - msleep(10); - } - - /* Wait for firmware status to look good */ - for (;;) { - reg = efx_mdio_read(efx, MDIO_MMD_PCS, PCS_UC8051_STATUS_REG); - if (reg < 0) - return reg; - if ((reg & - ((1 << PCS_UC_STATUS_WIDTH) - 1) << PCS_UC_STATUS_LBN) >= - PCS_UC_STATUS_FW_SAVE) - break; - if (time_after(jiffies, timeout)) - return -ETIMEDOUT; - msleep(100); - } - - return 0; -} - -static int qt202x_reset_phy(struct efx_nic *efx) -{ - int rc; - - if (efx->phy_type == PHY_TYPE_QT2025C) { - /* Wait for the reset triggered by falcon_reset_hw() - * to complete */ - rc = qt2025c_wait_reset(efx); - if (rc < 0) - goto fail; - } else { - /* Reset the PHYXS MMD. This is documented as doing - * a complete soft reset. */ - rc = efx_mdio_reset_mmd(efx, MDIO_MMD_PHYXS, - QT2022C2_MAX_RESET_TIME / - QT2022C2_RESET_WAIT, - QT2022C2_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 = efx_mdio_check_mmds(efx, QT202X_REQUIRED_DEVS, MDIO_DEVS_PHYXS); - if (rc < 0) - goto fail; - - falcon_board(efx)->type->init_phy(efx); - - return rc; - - fail: - EFX_ERR(efx, "PHY reset timed out\n"); - return rc; -} - -static int qt202x_phy_probe(struct efx_nic *efx) -{ - efx->mdio.mmds = QT202X_REQUIRED_DEVS; - efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; - efx->loopback_modes = QT202X_LOOPBACKS | FALCON_XMAC_LOOPBACKS; - return 0; -} - -static int qt202x_phy_init(struct efx_nic *efx) -{ - struct qt202x_phy_data *phy_data; - u32 devid; - int rc; - - rc = qt202x_reset_phy(efx); - if (rc) { - EFX_ERR(efx, "PHY init failed\n"); - return rc; - } - - phy_data = kzalloc(sizeof(struct qt202x_phy_data), GFP_KERNEL); - if (!phy_data) - return -ENOMEM; - efx->phy_data = phy_data; - - devid = efx_mdio_read_id(efx, MDIO_MMD_PHYXS); - EFX_INFO(efx, "PHY ID reg %x (OUI %06x model %02x revision %x)\n", - devid, efx_mdio_id_oui(devid), efx_mdio_id_model(devid), - efx_mdio_id_rev(devid)); - - phy_data->phy_mode = efx->phy_mode; - return 0; -} - -static int qt202x_link_ok(struct efx_nic *efx) -{ - return efx_mdio_links_ok(efx, QT202X_REQUIRED_DEVS); -} - -static bool qt202x_phy_poll(struct efx_nic *efx) -{ - bool was_up = efx->link_state.up; - - efx->link_state.up = qt202x_link_ok(efx); - efx->link_state.speed = 10000; - efx->link_state.fd = true; - efx->link_state.fc = efx->wanted_fc; - - return efx->link_state.up != was_up; -} - -static int qt202x_phy_reconfigure(struct efx_nic *efx) -{ - struct qt202x_phy_data *phy_data = efx->phy_data; - - if (efx->phy_type == PHY_TYPE_QT2025C) { - /* There are several different register bits which can - * disable TX (and save power) on direct-attach cables - * or optical transceivers, varying somewhat between - * firmware versions. Only 'static mode' appears to - * cover everything. */ - mdio_set_flag( - &efx->mdio, efx->mdio.prtad, MDIO_MMD_PMAPMD, - PMA_PMD_FTX_CTRL2_REG, 1 << PMA_PMD_FTX_STATIC_LBN, - efx->phy_mode & PHY_MODE_TX_DISABLED || - efx->phy_mode & PHY_MODE_LOW_POWER || - efx->loopback_mode == LOOPBACK_PCS || - efx->loopback_mode == LOOPBACK_PMAPMD); - } else { - /* Reset the PHY when moving from tx off to tx on */ - if (!(efx->phy_mode & PHY_MODE_TX_DISABLED) && - (phy_data->phy_mode & PHY_MODE_TX_DISABLED)) - qt202x_reset_phy(efx); - - efx_mdio_transmit_disable(efx); - } - - efx_mdio_phy_reconfigure(efx); - - phy_data->phy_mode = efx->phy_mode; - - return 0; -} - -static void qt202x_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) -{ - mdio45_ethtool_gset(&efx->mdio, ecmd); -} - -static void qt202x_phy_fini(struct efx_nic *efx) -{ - /* Free the context block */ - kfree(efx->phy_data); - efx->phy_data = NULL; -} - -struct efx_phy_operations falcon_qt202x_phy_ops = { - .probe = qt202x_phy_probe, - .init = qt202x_phy_init, - .reconfigure = qt202x_phy_reconfigure, - .poll = qt202x_phy_poll, - .fini = qt202x_phy_fini, - .get_settings = qt202x_phy_get_settings, - .set_settings = efx_mdio_set_settings, -}; |