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e1000e: do not disable receiver on 82574/82583 

Due to a hardware erratum, the receiver on 82574 and 82583 should not be
stopped once it has been started.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Bruce Allan 2011-07-22 06:21:35 +00:00 committed by Jeff Kirsher
parent c407bee8a5
commit 7f99ae6338
4 changed files with 12 additions and 5 deletions
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6
drivers/net/e1000e/82571.c
View File

@ -2085,7 +2085,8 @@ struct e1000_info e1000_82574_info = {
| FLAG_HAS_AMT
| FLAG_HAS_CTRLEXT_ON_LOAD,
.flags2 = FLAG2_CHECK_PHY_HANG
| FLAG2_DISABLE_ASPM_L0S,
| FLAG2_DISABLE_ASPM_L0S
| FLAG2_NO_DISABLE_RX,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
@ -2104,7 +2105,8 @@ struct e1000_info e1000_82583_info = {
| FLAG_HAS_AMT
| FLAG_HAS_JUMBO_FRAMES
| FLAG_HAS_CTRLEXT_ON_LOAD,
.flags2 = FLAG2_DISABLE_ASPM_L0S,
.flags2 = FLAG2_DISABLE_ASPM_L0S
| FLAG2_NO_DISABLE_RX,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,

1
drivers/net/e1000e/e1000.h
View File

@ -453,6 +453,7 @@ struct e1000_info {
#define FLAG2_DISABLE_ASPM_L0S (1 << 7)
#define FLAG2_DISABLE_AIM (1 << 8)
#define FLAG2_CHECK_PHY_HANG (1 << 9)
#define FLAG2_NO_DISABLE_RX (1 << 10)
#define E1000_RX_DESC_PS(R, i) \
(&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))

3
drivers/net/e1000e/ethtool.c
View File

@ -1206,7 +1206,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
rx_ring->next_to_clean = 0;
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
ew32(RCTL, rctl & ~E1000_RCTL_EN);
ew32(RDBAL, ((u64) rx_ring->dma & 0xFFFFFFFF));
ew32(RDBAH, ((u64) rx_ring->dma >> 32));
ew32(RDLEN, rx_ring->size);

7
drivers/net/e1000e/netdev.c
View File

@ -2915,7 +2915,8 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
/* disable receives while setting up the descriptors */
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
ew32(RCTL, rctl & ~E1000_RCTL_EN);
e1e_flush();
usleep_range(10000, 20000);
@ -3394,7 +3395,8 @@ void e1000e_down(struct e1000_adapter *adapter)
/* disable receives in the hardware */
rctl = er32(RCTL);
ew32(RCTL, rctl & ~E1000_RCTL_EN);
if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
ew32(RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
netif_stop_queue(netdev);
@ -3403,6 +3405,7 @@ void e1000e_down(struct e1000_adapter *adapter)
tctl = er32(TCTL);
tctl &= ~E1000_TCTL_EN;
ew32(TCTL, tctl);
/* flush both disables and wait for them to finish */
e1e_flush();
usleep_range(10000, 20000);