diff options
| author | Matt Carlson <mcarlson@broadcom.com> | 2011-08-31 11:44:50 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-09-15 19:56:40 (GMT) |
| commit | 5b39de9178ce792862a414255dc98c970ec25a88 (patch) | |
| tree | 3a3656330954a3aa8e1bc99f0ab4da89efe5e81d /drivers | |
| parent | 81389f57150ca84c9517a6ab2338f57badef4219 (diff) | |
| download | linux-fsl-qoriq-5b39de9178ce792862a414255dc98c970ec25a88.tar.xz | |
tg3: Add ability to turn off 1shot MSI
In older devices, 1-shot MSI mode had to be enabled by the code. In
newer devices however, 1-shot MSI mode is enabled by default; code would
be needed to disable it.
Disabling 1-shot MSI mode is useful when debugging. This patch changes
the code so that the TG3_FLAG_1SHOT_MSI accurately reflects (and
controls) the state of 1-shot MSI mode.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 45715b1..d2f1ecb 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -5712,7 +5712,7 @@ static irqreturn_t tg3_msi(int irq, void *dev_id) * NIC to stop sending us irqs, engaging "in-intr-handler" * event coalescing. */ - tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001); + tw32_mailbox(tnapi->int_mbox, 0x00000001); if (likely(!tg3_irq_sync(tp))) napi_schedule(&tnapi->napi); @@ -8807,6 +8807,8 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) if (tg3_flag(tp, USING_MSIX) && tp->irq_cnt > 1) { val = tr32(MSGINT_MODE); val |= MSGINT_MODE_MULTIVEC_EN | MSGINT_MODE_ENABLE; + if (!tg3_flag(tp, 1SHOT_MSI)) + val |= MSGINT_MODE_ONE_SHOT_DISABLE; tw32(MSGINT_MODE, val); } @@ -9422,7 +9424,7 @@ static int tg3_test_interrupt(struct tg3 *tp) if (intr_ok) { /* Reenable MSI one shot mode. */ - if (tg3_flag(tp, 57765_PLUS)) { + if (tg3_flag(tp, 57765_PLUS) && tg3_flag(tp, 1SHOT_MSI)) { val = tr32(MSGINT_MODE) & ~MSGINT_MODE_ONE_SHOT_DISABLE; tw32(MSGINT_MODE, val); } @@ -9600,6 +9602,8 @@ static void tg3_ints_init(struct tg3 *tp) u32 msi_mode = tr32(MSGINT_MODE); if (tg3_flag(tp, USING_MSIX) && tp->irq_cnt > 1) msi_mode |= MSGINT_MODE_MULTIVEC_EN; + if (!tg3_flag(tp, 1SHOT_MSI)) + msi_mode |= MSGINT_MODE_ONE_SHOT_DISABLE; tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE); } defcfg: |