1 files changed, 39 insertions, 34 deletions

diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c
index da386599ab68..e8396614daf3 100644
--- a/drivers/net/sfc/nic.c
+++ b/drivers/net/sfc/nic.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * Driver for Solarflare Solarstorm network controllers and boards
  * Copyright 2005-2006 Fen Systems Ltd.
- * Copyright 2006-2009 Solarflare Communications Inc.
+ * Copyright 2006-2011 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
@@ -41,26 +41,6 @@
 #define RX_DC_ENTRIES 64
 #define RX_DC_ENTRIES_ORDER 3
 
-/* RX FIFO XOFF watermark
- *
- * When the amount of the RX FIFO increases used increases past this
- * watermark send XOFF. Only used if RX flow control is enabled (ethtool -A)
- * This also has an effect on RX/TX arbitration
- */
-int efx_nic_rx_xoff_thresh = -1;
-module_param_named(rx_xoff_thresh_bytes, efx_nic_rx_xoff_thresh, int, 0644);
-MODULE_PARM_DESC(rx_xoff_thresh_bytes, "RX fifo XOFF threshold");
-
-/* RX FIFO XON watermark
- *
- * When the amount of the RX FIFO used decreases below this
- * watermark send XON. Only used if TX flow control is enabled (ethtool -A)
- * This also has an effect on RX/TX arbitration
- */
-int efx_nic_rx_xon_thresh = -1;
-module_param_named(rx_xon_thresh_bytes, efx_nic_rx_xon_thresh, int, 0644);
-MODULE_PARM_DESC(rx_xon_thresh_bytes, "RX fifo XON threshold");
-
 /* If EFX_MAX_INT_ERRORS internal errors occur within
  * EFX_INT_ERROR_EXPIRE seconds, we consider the NIC broken and
  * disable it.
@@ -445,8 +425,8 @@ int efx_nic_probe_tx(struct efx_tx_queue *tx_queue)
 
 void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
 {
-        efx_oword_t tx_desc_ptr;
         struct efx_nic *efx = tx_queue->efx;
+        efx_oword_t reg;
 
         tx_queue->flushed = FLUSH_NONE;
 
@@ -454,7 +434,7 @@ void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
         efx_init_special_buffer(efx, &tx_queue->txd);
 
         /* Push TX descriptor ring to card */
-        EFX_POPULATE_OWORD_10(tx_desc_ptr,
+        EFX_POPULATE_OWORD_10(reg,
                               FRF_AZ_TX_DESCQ_EN, 1,
                               FRF_AZ_TX_ISCSI_DDIG_EN, 0,
                               FRF_AZ_TX_ISCSI_HDIG_EN, 0,
@@ -470,17 +450,15 @@ void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
 
         if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
                 int csum = tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD;
-                EFX_SET_OWORD_FIELD(tx_desc_ptr, FRF_BZ_TX_IP_CHKSM_DIS, !csum);
-                EFX_SET_OWORD_FIELD(tx_desc_ptr, FRF_BZ_TX_TCP_CHKSM_DIS,
+                EFX_SET_OWORD_FIELD(reg, FRF_BZ_TX_IP_CHKSM_DIS, !csum);
+                EFX_SET_OWORD_FIELD(reg, FRF_BZ_TX_TCP_CHKSM_DIS,
                                     !csum);
         }
 
-        efx_writeo_table(efx, &tx_desc_ptr, efx->type->txd_ptr_tbl_base,
+        efx_writeo_table(efx, &reg, efx->type->txd_ptr_tbl_base,
                          tx_queue->queue);
 
         if (efx_nic_rev(efx) < EFX_REV_FALCON_B0) {
-                efx_oword_t reg;
-
                 /* Only 128 bits in this register */
                 BUILD_BUG_ON(EFX_MAX_TX_QUEUES > 128);
 
@@ -491,6 +469,16 @@ void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
                         set_bit_le(tx_queue->queue, (void *)&reg);
                 efx_writeo(efx, &reg, FR_AA_TX_CHKSM_CFG);
         }
+
+        if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
+                EFX_POPULATE_OWORD_1(reg,
+                                     FRF_BZ_TX_PACE,
+                                     (tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI) ?
+                                     FFE_BZ_TX_PACE_OFF :
+                                     FFE_BZ_TX_PACE_RESERVED);
+                efx_writeo_table(efx, &reg, FR_BZ_TX_PACE_TBL,
+                                 tx_queue->queue);
+        }
 }
 
 static void efx_flush_tx_queue(struct efx_tx_queue *tx_queue)
@@ -1238,8 +1226,10 @@ int efx_nic_flush_queues(struct efx_nic *efx)
 
         /* Flush all tx queues in parallel */
         efx_for_each_channel(channel, efx) {
-                efx_for_each_channel_tx_queue(tx_queue, channel)
-                        efx_flush_tx_queue(tx_queue);
+                efx_for_each_possible_channel_tx_queue(tx_queue, channel) {
+                        if (tx_queue->initialised)
+                                efx_flush_tx_queue(tx_queue);
+                }
         }
 
         /* The hardware supports four concurrent rx flushes, each of which may
@@ -1262,8 +1252,9 @@ int efx_nic_flush_queues(struct efx_nic *efx)
                                         ++rx_pending;
                                 }
                         }
-                        efx_for_each_channel_tx_queue(tx_queue, channel) {
-                                if (tx_queue->flushed != FLUSH_DONE)
+                        efx_for_each_possible_channel_tx_queue(tx_queue, channel) {
+                                if (tx_queue->initialised &&
+                                    tx_queue->flushed != FLUSH_DONE)
                                         ++tx_pending;
                         }
                 }
@@ -1278,8 +1269,9 @@ int efx_nic_flush_queues(struct efx_nic *efx)
         /* Mark the queues as all flushed. We're going to return failure
          * leading to a reset, or fake up success anyway */
         efx_for_each_channel(channel, efx) {
-                efx_for_each_channel_tx_queue(tx_queue, channel) {
-                        if (tx_queue->flushed != FLUSH_DONE)
+                efx_for_each_possible_channel_tx_queue(tx_queue, channel) {
+                        if (tx_queue->initialised &&
+                            tx_queue->flushed != FLUSH_DONE)
                                 netif_err(efx, hw, efx->net_dev,
                                           "tx queue %d flush command timed out\n",
                                           tx_queue->queue);
@@ -1682,6 +1674,19 @@ void efx_nic_init_common(struct efx_nic *efx)
         if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
                 EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);
         efx_writeo(efx, &temp, FR_AZ_TX_RESERVED);
+
+        if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
+                EFX_POPULATE_OWORD_4(temp,
+                                     /* Default values */
+                                     FRF_BZ_TX_PACE_SB_NOT_AF, 0x15,
+                                     FRF_BZ_TX_PACE_SB_AF, 0xb,
+                                     FRF_BZ_TX_PACE_FB_BASE, 0,
+                                     /* Allow large pace values in the
+                                      * fast bin. */
+                                     FRF_BZ_TX_PACE_BIN_TH,
+                                     FFE_BZ_TX_PACE_RESERVED);
+                efx_writeo(efx, &temp, FR_BZ_TX_PACE);
+        }
 }
 
 /* Register dump */