diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index af4054a1a133676e7d26feb38cc8de0a0c88118f..7a64f50435cf6aab656394e7c21140eeb59f214a 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -37,6 +37,7 @@
#define IXGBE_82598_RAR_ENTRIES 16
#define IXGBE_82598_MC_TBL_SIZE 128
#define IXGBE_82598_VFT_TBL_SIZE 128
+#define IXGBE_82598_RX_PB_SIZE 512
static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
@@ -224,6 +225,8 @@ static s32 ixgbe_start_hw_82598(struct ixgbe_hw *hw)
IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
}
+ hw->mac.rx_pb_size = IXGBE_82598_RX_PB_SIZE;
+
/* set the completion timeout for interface */
if (ret_val == 0)
ixgbe_set_pcie_completion_timeout(hw);
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index e4323055347b0f0e03a8d24ae77e260c0daa918c..b341ed8ef84ff9735434f36348eb304ae1e09e99 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -38,6 +38,7 @@
#define IXGBE_82599_RAR_ENTRIES 128
#define IXGBE_82599_MC_TBL_SIZE 128
#define IXGBE_82599_VFT_TBL_SIZE 128
+#define IXGBE_82599_RX_PB_SIZE 512
static void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
static void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
@@ -1765,6 +1766,7 @@ static s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
/* We need to run link autotry after the driver loads */
hw->mac.autotry_restart = true;
+ hw->mac.rx_pb_size = IXGBE_82599_RX_PB_SIZE;
if (ret_val == 0)
ret_val = ixgbe_verify_fw_version_82599(hw);
diff --git a/drivers/net/ixgbe/ixgbe_dcb_82599.c b/drivers/net/ixgbe/ixgbe_dcb_82599.c
index 025af8c53ddbd9b35638d5ed2951faa742f68041..865ddd82b268d68bd6c4ef510bf760e0cb514c7e 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_82599.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_82599.c
@@ -39,36 +39,52 @@
*/
static s32 ixgbe_dcb_config_packet_buffers_82599(struct ixgbe_hw *hw, u8 rx_pba)
{
- s32 ret_val = 0;
- u32 value = IXGBE_RXPBSIZE_64KB;
+ int num_tcs = IXGBE_MAX_PACKET_BUFFERS;
+ u32 rx_pb_size = hw->mac.rx_pb_size << IXGBE_RXPBSIZE_SHIFT;
+ u32 rxpktsize;
+ u32 txpktsize;
+ u32 txpbthresh;
u8 i = 0;
- /* Setup Rx packet buffer sizes */
- switch (rx_pba) {
- case pba_80_48:
- /* Setup the first four at 80KB */
- value = IXGBE_RXPBSIZE_80KB;
- for (; i < 4; i++)
- IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), value);
- /* Setup the last four at 48KB...don't re-init i */
- value = IXGBE_RXPBSIZE_48KB;
- /* Fall Through */
- case pba_equal:
- default:
- for (; i < IXGBE_MAX_PACKET_BUFFERS; i++)
- IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), value);
-
- /* Setup Tx packet buffer sizes */
- for (i = 0; i < IXGBE_MAX_PACKET_BUFFERS; i++) {
- IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i),
- IXGBE_TXPBSIZE_20KB);
- IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i),
- IXGBE_TXPBTHRESH_DCB);
- }
- break;
+ /*
+ * This really means configure the first half of the TCs
+ * (Traffic Classes) to use 5/8 of the Rx packet buffer
+ * space. To determine the size of the buffer for each TC,
+ * we are multiplying the average size by 5/4 and applying
+ * it to half of the traffic classes.
+ */
+ if (rx_pba == pba_80_48) {
+ rxpktsize = (rx_pb_size * 5) / (num_tcs * 4);
+ rx_pb_size -= rxpktsize * (num_tcs / 2);
+ for (; i < (num_tcs / 2); i++)
+ IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
+ }
+
+ /* Divide the remaining Rx packet buffer evenly among the TCs */
+ rxpktsize = rx_pb_size / (num_tcs - i);
+ for (; i < num_tcs; i++)
+ IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
+
+ /*
+ * Setup Tx packet buffer and threshold equally for all TCs
+ * TXPBTHRESH register is set in K so divide by 1024 and subtract
+ * 10 since the largest packet we support is just over 9K.
+ */
+ txpktsize = IXGBE_TXPBSIZE_MAX / num_tcs;
+ txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
+ for (i = 0; i < num_tcs; i++) {
+ IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
+ IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
}
- return ret_val;
+ /* Clear unused TCs, if any, to zero buffer size*/
+ for (; i < MAX_TRAFFIC_CLASS; i++) {
+ IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
+ }
+
+ return 0;
}
/**
diff --git a/drivers/net/ixgbe/ixgbe_dcb_82599.h b/drivers/net/ixgbe/ixgbe_dcb_82599.h
index 148fd8b477a9ea0cf617c30715bab7a4f66aa667..2de71a5031535f9223f3e61419edc4768c854e21 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_82599.h
+++ b/drivers/net/ixgbe/ixgbe_dcb_82599.h
@@ -92,8 +92,10 @@
#define IXGBE_RXPBSIZE_64KB 0x00010000 /* 64KB Packet Buffer */
#define IXGBE_RXPBSIZE_80KB 0x00014000 /* 80KB Packet Buffer */
#define IXGBE_RXPBSIZE_128KB 0x00020000 /* 128KB Packet Buffer */
+#define IXGBE_TXPBSIZE_MAX 0x00028000 /* 160KB Packet Buffer*/
#define IXGBE_TXPBTHRESH_DCB 0xA /* THRESH value for DCB mode */
+#define IXGBE_TXPKT_SIZE_MAX 0xA /* Max Tx Packet size */
/* SECTXMINIFG DCB */
#define IXGBE_SECTX_DCB 0x00001F00 /* DCB TX Buffer IFG */
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index 15580d687aee0230983844f90c444b5a2e695089..7d0b37d2ab7b7e77378af80a943bbb8706eaf003 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2606,6 +2606,7 @@ struct ixgbe_mac_info {
u32 vft_size;
u32 num_rar_entries;
u32 rar_highwater;
+ u32 rx_pb_size;
u32 max_tx_queues;
u32 max_rx_queues;
u32 max_msix_vectors;
diff --git a/drivers/net/ixgbe/ixgbe_x540.c b/drivers/net/ixgbe/ixgbe_x540.c
index 05f8e9cddef466c75c6434d2b58464fd2fd5dde2..932394fce439acb24788b8f7e9bd7e8484136465 100644
--- a/drivers/net/ixgbe/ixgbe_x540.c
+++ b/drivers/net/ixgbe/ixgbe_x540.c
@@ -37,6 +37,7 @@
#define IXGBE_X540_RAR_ENTRIES 128
#define IXGBE_X540_MC_TBL_SIZE 128
#define IXGBE_X540_VFT_TBL_SIZE 128
+#define IXGBE_X540_RX_PB_SIZE 384
static s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw);
static s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw);
@@ -242,7 +243,7 @@ static s32 ixgbe_start_hw_X540(struct ixgbe_hw *hw)
goto out;
ret_val = ixgbe_start_hw_gen2(hw);
-
+ hw->mac.rx_pb_size = IXGBE_X540_RX_PB_SIZE;
out:
return ret_val;
}