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IXGBE: Set the SW prio_tc values at initialization to the HW setting.

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Set the SW prio_tc values at initialization to the HW setting.
Setting the SW prio_tc default values to be the HW setting by reading the
rtrup2tc register. For any TC change we need to reset the device.
This will remove the need to reset the device at the first
time we call ixgbe_dcbnl_ieee_setets.

Signed-off-by: Amir Hanania <amir.hanania@intel.com>
Tested-by: Jack Morgan<jack.morgan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Amir Hanania 2013-04-18 04:23:52 +00:00 committed by Jeff Kirsher
parent f7727c5309
commit e8915bebb4
4 changed files with 29 additions and 0 deletions
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23
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c
View File

@ -380,3 +380,26 @@ s32 ixgbe_dcb_hw_ets_config(struct ixgbe_hw *hw,
}
return 0;
}
static void ixgbe_dcb_read_rtrup2tc_82599(struct ixgbe_hw *hw, u8 *map)
{
u32 reg, i;
reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
for (i = 0; i < MAX_USER_PRIORITY; i++)
map[i] = IXGBE_RTRUP2TC_UP_MASK &
(reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT));
return;
}
void ixgbe_dcb_read_rtrup2tc(struct ixgbe_hw *hw, u8 *map)
{
switch (hw->mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
ixgbe_dcb_read_rtrup2tc_82599(hw, map);
break;
default:
break;
}
}

2
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.h
View File

@ -159,6 +159,8 @@ s32 ixgbe_dcb_hw_ets_config(struct ixgbe_hw *hw, u16 *refill, u16 *max,
s32 ixgbe_dcb_hw_pfc_config(struct ixgbe_hw *hw, u8 pfc_en, u8 *tc_prio);
s32 ixgbe_dcb_hw_config(struct ixgbe_hw *, struct ixgbe_dcb_config *);
void ixgbe_dcb_read_rtrup2tc(struct ixgbe_hw *hw, u8 *map);
/* DCB definitions for credit calculation */
#define DCB_CREDIT_QUANTUM 64 /* DCB Quantum */
#define MAX_CREDIT_REFILL 511 /* 0x1FF * 64B = 32704B */

1
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.h
View File

@ -45,6 +45,7 @@
/* Receive UP2TC mapping */
#define IXGBE_RTRUP2TC_UP_SHIFT 3
#define IXGBE_RTRUP2TC_UP_MASK 7
/* Transmit UP2TC mapping */
#define IXGBE_RTTUP2TC_UP_SHIFT 3

3
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
View File

@ -554,6 +554,9 @@ static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
adapter->ixgbe_ieee_ets->prio_tc[i] =
IEEE_8021QAZ_MAX_TCS;
/* if possible update UP2TC mappings from HW */
ixgbe_dcb_read_rtrup2tc(&adapter->hw,
adapter->ixgbe_ieee_ets->prio_tc);
}
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {