/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2006-2008 Solarflare Communications Inc.
+ * 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
#include <linux/delay.h>
#include "net_driver.h"
#include "efx.h"
-#include "falcon.h"
+#include "nic.h"
#include "regs.h"
#include "io.h"
#include "mac.h"
*************************************************************************/
/* Configure the XAUI driver that is an output from Falcon */
-static void falcon_setup_xaui(struct efx_nic *efx)
+void falcon_setup_xaui(struct efx_nic *efx)
{
efx_oword_t sdctl, txdrv;
return -ETIMEDOUT;
}
-static void falcon_mask_status_intr(struct efx_nic *efx, bool enable)
+static void falcon_ack_status_intr(struct efx_nic *efx)
{
efx_oword_t reg;
- if ((falcon_rev(efx) != FALCON_REV_B0) || LOOPBACK_INTERNAL(efx))
+ if ((efx_nic_rev(efx) != EFX_REV_FALCON_B0) || LOOPBACK_INTERNAL(efx))
return;
- /* We expect xgmii faults if the wireside link is up */
+ /* We expect xgmii faults if the wireside link is down */
if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.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)
+ if (efx->xmac_poll_required)
return;
- /* Flush the ISR */
- if (enable)
- efx_reado(efx, ®, FR_AB_XM_MGT_INT_MSK);
-
- EFX_POPULATE_OWORD_2(reg,
- FRF_AB_XM_MSK_RMTFLT, !enable,
- FRF_AB_XM_MSK_LCLFLT, !enable);
- efx_writeo(efx, ®, FR_AB_XM_MGT_INT_MASK);
+ efx_reado(efx, ®, FR_AB_XM_MGT_INT_MSK);
}
-/* Get status of XAUI link */
-bool falcon_xaui_link_ok(struct efx_nic *efx)
+static bool falcon_xgxs_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 */
efx_reado(efx, ®, FR_AB_XX_CORE_STAT);
EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_DISPERR, FFE_AB_XX_STAT_ALL_LANES);
efx_writeo(efx, ®, FR_AB_XX_CORE_STAT);
- /* If the link is up, then check the phy side of the xaui link */
- if (efx->link_state.up && link_ok)
- if (efx->phy_op->mmds & (1 << MDIO_MMD_PHYXS))
- link_ok = efx_mdio_phyxgxs_lane_sync(efx);
-
return link_ok;
}
-static void falcon_reconfigure_xmac_core(struct efx_nic *efx)
+static bool falcon_xmac_link_ok(struct efx_nic *efx)
+{
+ /*
+ * Check MAC's XGXS link status except when using XGMII loopback
+ * which bypasses the XGXS block.
+ * If possible, check PHY's XGXS link status except when using
+ * MAC loopback.
+ */
+ return (efx->loopback_mode == LOOPBACK_XGMII ||
+ falcon_xgxs_link_ok(efx)) &&
+ (!(efx->mdio.mmds & (1 << MDIO_MMD_PHYXS)) ||
+ LOOPBACK_INTERNAL(efx) ||
+ efx_mdio_phyxgxs_lane_sync(efx));
+}
+
+void falcon_reconfigure_xmac_core(struct efx_nic *efx)
{
unsigned int max_frame_len;
efx_oword_t reg;
bool rx_fc = !!(efx->link_state.fc & EFX_FC_RX);
+ bool tx_fc = !!(efx->link_state.fc & EFX_FC_TX);
/* Configure MAC - cut-thru mode is hard wired on */
EFX_POPULATE_OWORD_3(reg,
FRF_AB_XM_TX_PRMBL, 1,
FRF_AB_XM_AUTO_PAD, 1,
FRF_AB_XM_TXCRC, 1,
- FRF_AB_XM_FCNTL, 1,
+ FRF_AB_XM_FCNTL, tx_fc,
FRF_AB_XM_IPG, 0x3);
efx_writeo(efx, ®, FR_AB_XM_TX_CFG);
}
-/* 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)
+/* Try to bring up the Falcon side of the Falcon-Phy XAUI link */
+static bool falcon_xmac_link_ok_retry(struct efx_nic *efx, int tries)
{
- efx->mac_up = falcon_xaui_link_ok(efx);
+ bool mac_up = falcon_xmac_link_ok(efx);
- if ((efx->loopback_mode == LOOPBACK_NETWORK) ||
+ if (LOOPBACK_MASK(efx) & LOOPBACKS_EXTERNAL(efx) & LOOPBACKS_WS ||
efx_phy_mode_disabled(efx->phy_mode))
/* XAUI link is expected to be down */
- return;
+ return mac_up;
falcon_stop_nic_stats(efx);
- while (!efx->mac_up && tries) {
+ while (!mac_up && tries) {
EFX_LOG(efx, "bashing xaui\n");
falcon_reset_xaui(efx);
udelay(200);
- efx->mac_up = falcon_xaui_link_ok(efx);
+ mac_up = falcon_xmac_link_ok(efx);
--tries;
}
falcon_start_nic_stats(efx);
+
+ return mac_up;
}
-static void falcon_reconfigure_xmac(struct efx_nic *efx)
+static bool falcon_xmac_check_fault(struct efx_nic *efx)
{
- falcon_mask_status_intr(efx, false);
+ return !falcon_xmac_link_ok_retry(efx, 5);
+}
+static int falcon_reconfigure_xmac(struct efx_nic *efx)
+{
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);
+ efx->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 5);
+ falcon_ack_status_intr(efx);
+
+ return 0;
}
static void falcon_update_stats_xmac(struct efx_nic *efx)
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)
+void falcon_poll_xmac(struct efx_nic *efx)
{
- if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up || efx->mac_up)
+ if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up ||
+ !efx->xmac_poll_required)
return;
- falcon_mask_status_intr(efx, false);
- falcon_check_xaui_link_up(efx, 1);
- falcon_mask_status_intr(efx, true);
+ efx->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 1);
+ falcon_ack_status_intr(efx);
}
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,
+ .check_fault = falcon_xmac_check_fault,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff