tg3: Adjust BD replenish thresholds

The BD replenish thresholds for the 57765 and newer ASIC revs are a
little strict.  They were tuned for a mode that is currently unused.
This patch relaxes the thresholds so that they are set to values more
inline with the resources available.

(cherry picked from commit 513aa6ea39adfc9daf5b4bc33b49008733c3eb51)
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Joe Jin <joe.jin@oracle.com>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index b3b53ca2aa8194243f913a9625a9b23067544b6f..0cd1fee9133cd79fc310085f319c79da1dc67b6f 100644 (file)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -8199,7 +8199,8 @@ static void tg3_setup_rxbd_thresholds(struct tg3 *tp)
        if (!tg3_flag(tp, 5750_PLUS) ||
            tg3_flag(tp, 5780_CLASS) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
-           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
+           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
+           tg3_flag(tp, 57765_PLUS))
                bdcache_maxcnt = TG3_SRAM_RX_STD_BDCACHE_SIZE_5700;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
                 GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787)
@@ -8219,10 +8220,7 @@ static void tg3_setup_rxbd_thresholds(struct tg3 *tp)
        if (!tg3_flag(tp, JUMBO_CAPABLE) || tg3_flag(tp, 5780_CLASS))
                return;
 
-       if (!tg3_flag(tp, 5705_PLUS))
-               bdcache_maxcnt = TG3_SRAM_RX_JMB_BDCACHE_SIZE_5700;
-       else
-               bdcache_maxcnt = TG3_SRAM_RX_JMB_BDCACHE_SIZE_5717;
+       bdcache_maxcnt = TG3_SRAM_RX_JMB_BDCACHE_SIZE_5700;
 
        host_rep_thresh = max_t(u32, tp->rx_jumbo_pending / 8, 1);