diff options
Diffstat (limited to 'drivers/net/sfc/falcon_xmac.c')
| -rw-r--r-- | drivers/net/sfc/falcon_xmac.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c deleted file mode 100644 index 5a03713685a..00000000000 --- a/drivers/net/sfc/falcon_xmac.c +++ /dev/null @@ -1,376 +0,0 @@ -/**************************************************************************** - * Driver for Solarflare Solarstorm network controllers and boards - * Copyright 2005-2006 Fen Systems Ltd. - * 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. - */ - -#include <linux/delay.h> -#include "net_driver.h" -#include "efx.h" -#include "falcon.h" -#include "falcon_hwdefs.h" -#include "falcon_io.h" -#include "mac.h" -#include "mdio_10g.h" -#include "phy.h" -#include "boards.h" -#include "workarounds.h" - -/************************************************************************** - * - * MAC operations - * - *************************************************************************/ - -/* Configure the XAUI driver that is an output from Falcon */ -static void falcon_setup_xaui(struct efx_nic *efx) -{ - efx_oword_t sdctl, txdrv; - - /* Move the XAUI into low power, unless there is no PHY, in - * which case the XAUI will have to drive a cable. */ - if (efx->phy_type == PHY_TYPE_NONE) - return; - - falcon_read(efx, &sdctl, XX_SD_CTL_REG); - EFX_SET_OWORD_FIELD(sdctl, XX_HIDRVD, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_LODRVD, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_HIDRVC, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_LODRVC, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_HIDRVB, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_LODRVB, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_HIDRVA, XX_SD_CTL_DRV_DEFAULT); - EFX_SET_OWORD_FIELD(sdctl, XX_LODRVA, XX_SD_CTL_DRV_DEFAULT); - falcon_write(efx, &sdctl, XX_SD_CTL_REG); - - EFX_POPULATE_OWORD_8(txdrv, - XX_DEQD, XX_TXDRV_DEQ_DEFAULT, - XX_DEQC, XX_TXDRV_DEQ_DEFAULT, - XX_DEQB, XX_TXDRV_DEQ_DEFAULT, - XX_DEQA, XX_TXDRV_DEQ_DEFAULT, - XX_DTXD, XX_TXDRV_DTX_DEFAULT, - XX_DTXC, XX_TXDRV_DTX_DEFAULT, - XX_DTXB, XX_TXDRV_DTX_DEFAULT, - XX_DTXA, XX_TXDRV_DTX_DEFAULT); - falcon_write(efx, &txdrv, XX_TXDRV_CTL_REG); -} - -int falcon_reset_xaui(struct efx_nic *efx) -{ - efx_oword_t reg; - int count; - - EFX_POPULATE_DWORD_1(reg, XX_RST_XX_EN, 1); - falcon_write(efx, ®, XX_PWR_RST_REG); - - /* Give some time for the link to establish */ - for (count = 0; count < 1000; count++) { /* wait upto 10ms */ - falcon_read(efx, ®, XX_PWR_RST_REG); - if (EFX_OWORD_FIELD(reg, XX_RST_XX_EN) == 0) { - falcon_setup_xaui(efx); - return 0; - } - udelay(10); - } - EFX_ERR(efx, "timed out waiting for XAUI/XGXS reset\n"); - return -ETIMEDOUT; -} - -static void falcon_mask_status_intr(struct efx_nic *efx, bool enable) -{ - efx_oword_t reg; - - if ((falcon_rev(efx) != FALCON_REV_B0) || LOOPBACK_INTERNAL(efx)) - return; - - /* We expect xgmii faults if the wireside link is up */ - if (!EFX_WORKAROUND_5147(efx) || !efx->link_up) - return; - - /* We can only use this interrupt to signal the negative edge of - * xaui_align [we have to poll the positive edge]. */ - if (!efx->mac_up) - return; - - /* Flush the ISR */ - if (enable) - falcon_read(efx, ®, XM_MGT_INT_REG_B0); - - EFX_POPULATE_OWORD_2(reg, - XM_MSK_RMTFLT, !enable, - XM_MSK_LCLFLT, !enable); - falcon_write(efx, ®, XM_MGT_INT_MSK_REG_B0); -} - -/* Get status of XAUI link */ -bool falcon_xaui_link_ok(struct efx_nic *efx) -{ - efx_oword_t reg; - bool align_done, link_ok = false; - int sync_status; - - if (LOOPBACK_INTERNAL(efx)) - return true; - - /* Read link status */ - falcon_read(efx, ®, XX_CORE_STAT_REG); - - align_done = EFX_OWORD_FIELD(reg, XX_ALIGN_DONE); - sync_status = EFX_OWORD_FIELD(reg, XX_SYNC_STAT); - if (align_done && (sync_status == XX_SYNC_STAT_DECODE_SYNCED)) - link_ok = true; - - /* Clear link status ready for next read */ - EFX_SET_OWORD_FIELD(reg, XX_COMMA_DET, XX_COMMA_DET_RESET); - EFX_SET_OWORD_FIELD(reg, XX_CHARERR, XX_CHARERR_RESET); - EFX_SET_OWORD_FIELD(reg, XX_DISPERR, XX_DISPERR_RESET); - falcon_write(efx, ®, XX_CORE_STAT_REG); - - /* If the link is up, then check the phy side of the xaui link */ - if (efx->link_up && link_ok) - if (efx->phy_op->mmds & (1 << MDIO_MMD_PHYXS)) - link_ok = mdio_clause45_phyxgxs_lane_sync(efx); - - return link_ok; -} - -static void falcon_reconfigure_xmac_core(struct efx_nic *efx) -{ - unsigned int max_frame_len; - efx_oword_t reg; - bool rx_fc = !!(efx->link_fc & EFX_FC_RX); - - /* Configure MAC - cut-thru mode is hard wired on */ - EFX_POPULATE_DWORD_3(reg, - XM_RX_JUMBO_MODE, 1, - XM_TX_STAT_EN, 1, - XM_RX_STAT_EN, 1); - falcon_write(efx, ®, XM_GLB_CFG_REG); - - /* Configure TX */ - EFX_POPULATE_DWORD_6(reg, - XM_TXEN, 1, - XM_TX_PRMBL, 1, - XM_AUTO_PAD, 1, - XM_TXCRC, 1, - XM_FCNTL, 1, - XM_IPG, 0x3); - falcon_write(efx, ®, XM_TX_CFG_REG); - - /* Configure RX */ - EFX_POPULATE_DWORD_5(reg, - XM_RXEN, 1, - XM_AUTO_DEPAD, 0, - XM_ACPT_ALL_MCAST, 1, - XM_ACPT_ALL_UCAST, efx->promiscuous, - XM_PASS_CRC_ERR, 1); - falcon_write(efx, ®, XM_RX_CFG_REG); - - /* Set frame length */ - max_frame_len = EFX_MAX_FRAME_LEN(efx->net_dev->mtu); - EFX_POPULATE_DWORD_1(reg, XM_MAX_RX_FRM_SIZE, max_frame_len); - falcon_write(efx, ®, XM_RX_PARAM_REG); - EFX_POPULATE_DWORD_2(reg, - XM_MAX_TX_FRM_SIZE, max_frame_len, - XM_TX_JUMBO_MODE, 1); - falcon_write(efx, ®, XM_TX_PARAM_REG); - - EFX_POPULATE_DWORD_2(reg, - XM_PAUSE_TIME, 0xfffe, /* MAX PAUSE TIME */ - XM_DIS_FCNTL, !rx_fc); - falcon_write(efx, ®, XM_FC_REG); - - /* Set MAC address */ - EFX_POPULATE_DWORD_4(reg, - XM_ADR_0, efx->net_dev->dev_addr[0], - XM_ADR_1, efx->net_dev->dev_addr[1], - XM_ADR_2, efx->net_dev->dev_addr[2], - XM_ADR_3, efx->net_dev->dev_addr[3]); - falcon_write(efx, ®, XM_ADR_LO_REG); - EFX_POPULATE_DWORD_2(reg, - XM_ADR_4, efx->net_dev->dev_addr[4], - XM_ADR_5, efx->net_dev->dev_addr[5]); - falcon_write(efx, ®, XM_ADR_HI_REG); -} - -static void falcon_reconfigure_xgxs_core(struct efx_nic *efx) -{ - efx_oword_t reg; - bool xgxs_loopback = (efx->loopback_mode == LOOPBACK_XGXS); - bool xaui_loopback = (efx->loopback_mode == LOOPBACK_XAUI); - bool xgmii_loopback = (efx->loopback_mode == LOOPBACK_XGMII); - - /* XGXS block is flaky and will need to be reset if moving - * into our out of XGMII, XGXS or XAUI loopbacks. */ - if (EFX_WORKAROUND_5147(efx)) { - bool old_xgmii_loopback, old_xgxs_loopback, old_xaui_loopback; - bool reset_xgxs; - - falcon_read(efx, ®, XX_CORE_STAT_REG); - old_xgxs_loopback = EFX_OWORD_FIELD(reg, XX_XGXS_LB_EN); - old_xgmii_loopback = EFX_OWORD_FIELD(reg, XX_XGMII_LB_EN); - - falcon_read(efx, ®, XX_SD_CTL_REG); - old_xaui_loopback = EFX_OWORD_FIELD(reg, XX_LPBKA); - - /* The PHY driver may have turned XAUI off */ - reset_xgxs = ((xgxs_loopback != old_xgxs_loopback) || - (xaui_loopback != old_xaui_loopback) || - (xgmii_loopback != old_xgmii_loopback)); - - if (reset_xgxs) - falcon_reset_xaui(efx); - } - - falcon_read(efx, ®, XX_CORE_STAT_REG); - EFX_SET_OWORD_FIELD(reg, XX_FORCE_SIG, - (xgxs_loopback || xaui_loopback) ? - XX_FORCE_SIG_DECODE_FORCED : 0); - EFX_SET_OWORD_FIELD(reg, XX_XGXS_LB_EN, xgxs_loopback); - EFX_SET_OWORD_FIELD(reg, XX_XGMII_LB_EN, xgmii_loopback); - falcon_write(efx, ®, XX_CORE_STAT_REG); - - falcon_read(efx, ®, XX_SD_CTL_REG); - EFX_SET_OWORD_FIELD(reg, XX_LPBKD, xaui_loopback); - EFX_SET_OWORD_FIELD(reg, XX_LPBKC, xaui_loopback); - EFX_SET_OWORD_FIELD(reg, XX_LPBKB, xaui_loopback); - EFX_SET_OWORD_FIELD(reg, XX_LPBKA, xaui_loopback); - falcon_write(efx, ®, XX_SD_CTL_REG); -} - - -/* Try and bring the Falcon side of the Falcon-Phy XAUI link fails - * to come back up. Bash it until it comes back up */ -static void falcon_check_xaui_link_up(struct efx_nic *efx, int tries) -{ - efx->mac_up = falcon_xaui_link_ok(efx); - - if ((efx->loopback_mode == LOOPBACK_NETWORK) || - efx_phy_mode_disabled(efx->phy_mode)) - /* XAUI link is expected to be down */ - return; - - while (!efx->mac_up && tries) { - EFX_LOG(efx, "bashing xaui\n"); - falcon_reset_xaui(efx); - udelay(200); - - efx->mac_up = falcon_xaui_link_ok(efx); - --tries; - } -} - -static void falcon_reconfigure_xmac(struct efx_nic *efx) -{ - falcon_mask_status_intr(efx, false); - - falcon_reconfigure_xgxs_core(efx); - falcon_reconfigure_xmac_core(efx); - - falcon_reconfigure_mac_wrapper(efx); - - falcon_check_xaui_link_up(efx, 5); - falcon_mask_status_intr(efx, true); -} - -static void falcon_update_stats_xmac(struct efx_nic *efx) -{ - struct efx_mac_stats *mac_stats = &efx->mac_stats; - int rc; - - rc = falcon_dma_stats(efx, XgDmaDone_offset); - if (rc) - return; - - /* Update MAC stats from DMAed values */ - FALCON_STAT(efx, XgRxOctets, rx_bytes); - FALCON_STAT(efx, XgRxOctetsOK, rx_good_bytes); - FALCON_STAT(efx, XgRxPkts, rx_packets); - FALCON_STAT(efx, XgRxPktsOK, rx_good); - FALCON_STAT(efx, XgRxBroadcastPkts, rx_broadcast); - FALCON_STAT(efx, XgRxMulticastPkts, rx_multicast); - FALCON_STAT(efx, XgRxUnicastPkts, rx_unicast); - FALCON_STAT(efx, XgRxUndersizePkts, rx_lt64); - FALCON_STAT(efx, XgRxOversizePkts, rx_gtjumbo); - FALCON_STAT(efx, XgRxJabberPkts, rx_bad_gtjumbo); - FALCON_STAT(efx, XgRxUndersizeFCSerrorPkts, rx_bad_lt64); - FALCON_STAT(efx, XgRxDropEvents, rx_overflow); - FALCON_STAT(efx, XgRxFCSerrorPkts, rx_bad); - FALCON_STAT(efx, XgRxAlignError, rx_align_error); - FALCON_STAT(efx, XgRxSymbolError, rx_symbol_error); - FALCON_STAT(efx, XgRxInternalMACError, rx_internal_error); - FALCON_STAT(efx, XgRxControlPkts, rx_control); - FALCON_STAT(efx, XgRxPausePkts, rx_pause); - FALCON_STAT(efx, XgRxPkts64Octets, rx_64); - FALCON_STAT(efx, XgRxPkts65to127Octets, rx_65_to_127); - FALCON_STAT(efx, XgRxPkts128to255Octets, rx_128_to_255); - FALCON_STAT(efx, XgRxPkts256to511Octets, rx_256_to_511); - FALCON_STAT(efx, XgRxPkts512to1023Octets, rx_512_to_1023); - FALCON_STAT(efx, XgRxPkts1024to15xxOctets, rx_1024_to_15xx); - FALCON_STAT(efx, XgRxPkts15xxtoMaxOctets, rx_15xx_to_jumbo); - FALCON_STAT(efx, XgRxLengthError, rx_length_error); - FALCON_STAT(efx, XgTxPkts, tx_packets); - FALCON_STAT(efx, XgTxOctets, tx_bytes); - FALCON_STAT(efx, XgTxMulticastPkts, tx_multicast); - FALCON_STAT(efx, XgTxBroadcastPkts, tx_broadcast); - FALCON_STAT(efx, XgTxUnicastPkts, tx_unicast); - FALCON_STAT(efx, XgTxControlPkts, tx_control); - FALCON_STAT(efx, XgTxPausePkts, tx_pause); - FALCON_STAT(efx, XgTxPkts64Octets, tx_64); - FALCON_STAT(efx, XgTxPkts65to127Octets, tx_65_to_127); - FALCON_STAT(efx, XgTxPkts128to255Octets, tx_128_to_255); - FALCON_STAT(efx, XgTxPkts256to511Octets, tx_256_to_511); - FALCON_STAT(efx, XgTxPkts512to1023Octets, tx_512_to_1023); - FALCON_STAT(efx, XgTxPkts1024to15xxOctets, tx_1024_to_15xx); - FALCON_STAT(efx, XgTxPkts1519toMaxOctets, tx_15xx_to_jumbo); - FALCON_STAT(efx, XgTxUndersizePkts, tx_lt64); - FALCON_STAT(efx, XgTxOversizePkts, tx_gtjumbo); - FALCON_STAT(efx, XgTxNonTcpUdpPkt, tx_non_tcpudp); - FALCON_STAT(efx, XgTxMacSrcErrPkt, tx_mac_src_error); - FALCON_STAT(efx, XgTxIpSrcErrPkt, tx_ip_src_error); - - /* Update derived statistics */ - mac_stats->tx_good_bytes = - (mac_stats->tx_bytes - mac_stats->tx_bad_bytes - - mac_stats->tx_control * 64); - mac_stats->rx_bad_bytes = - (mac_stats->rx_bytes - mac_stats->rx_good_bytes - - mac_stats->rx_control * 64); -} - -static void falcon_xmac_irq(struct efx_nic *efx) -{ - /* The XGMII link has a transient fault, which indicates either: - * - there's a transient xgmii fault - * - falcon's end of the xaui link may need a kick - * - the wire-side link may have gone down, but the lasi/poll() - * hasn't noticed yet. - * - * We only want to even bother polling XAUI if we're confident it's - * not (1) or (3). In both cases, the only reliable way to spot this - * is to wait a bit. We do this here by forcing the mac link state - * to down, and waiting for the mac poll to come round and check - */ - efx->mac_up = false; -} - -static void falcon_poll_xmac(struct efx_nic *efx) -{ - if (!EFX_WORKAROUND_5147(efx) || !efx->link_up || efx->mac_up) - return; - - falcon_mask_status_intr(efx, false); - falcon_check_xaui_link_up(efx, 1); - falcon_mask_status_intr(efx, true); -} - -struct efx_mac_operations falcon_xmac_operations = { - .reconfigure = falcon_reconfigure_xmac, - .update_stats = falcon_update_stats_xmac, - .irq = falcon_xmac_irq, - .poll = falcon_poll_xmac, -}; |