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tg3: Disable unused transmit rings 

This patch allows the driver to disable the additional transmit rings
available on the 5717 and 5719 devices.  This is not strictly necessary,
but is done anyways for correctness.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2010-10-14 10:37:39 +00:00 committed by David S. Miller
parent bba226acf4
commit 3d37728bc5
1 changed files with 3 additions and 0 deletions
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3
drivers/net/tg3.c
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@ -7536,6 +7536,9 @@ static void tg3_rings_reset(struct tg3 *tp)
/* Disable all transmit rings but the first. */
if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 16;
else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 4;
else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 2;
else