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[TG3]: Add new one-shot MSI handler

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Support one-shot MSI on 5787.

This one-shot MSI idea is credited to David Miller. In this mode, MSI
disables itself automatically after it is generated, saving the driver
a register access to disable it for NAPI.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan
2006-03-20 22:28:41 -08:00
committed by David S. Miller
parent 9c27dbdf64
commit fcfa0a32c7
2 changed files with 55 additions and 31 deletions
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1
drivers/net/tg3.h
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@@ -2209,6 +2209,7 @@ struct tg3 {
#define TG3_FLG2_5780_CLASS 0x04000000
#define TG3_FLG2_HW_TSO_2 0x08000000
#define TG3_FLG2_HW_TSO (TG3_FLG2_HW_TSO_1 | TG3_FLG2_HW_TSO_2)
#define TG3_FLG2_1SHOT_MSI 0x10000000
u32 split_mode_max_reqs;
#define SPLIT_MODE_5704_MAX_REQ 3