mirror of https://github.com/hak5/openwrt-owl.git
180 lines
5.8 KiB
Diff
180 lines
5.8 KiB
Diff
From: Gregory CLEMENT <gregory.clement@free-electrons.com>
|
|
Date: Thu, 4 Feb 2016 22:09:27 +0100
|
|
Subject: [PATCH] net: mvneta: Modify the queue related fields from each cpu
|
|
|
|
In the MVNETA_INTR_* registers, the queues related fields are per cpu,
|
|
according to the datasheet (comment in [] are added by me):
|
|
"In a multi-CPU system, bits of RX[or TX] queues for which the access by
|
|
the reading[or writing] CPU is disabled are read as 0, and cannot be
|
|
cleared[or written]."
|
|
|
|
That means that each time we want to manipulate these bits we had to do
|
|
it on each cpu and not only on the current cpu.
|
|
|
|
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
|
|
--- a/drivers/net/ethernet/marvell/mvneta.c
|
|
+++ b/drivers/net/ethernet/marvell/mvneta.c
|
|
@@ -1036,6 +1036,43 @@ static void mvneta_set_autoneg(struct mv
|
|
}
|
|
}
|
|
|
|
+static void mvneta_percpu_unmask_interrupt(void *arg)
|
|
+{
|
|
+ struct mvneta_port *pp = arg;
|
|
+
|
|
+ /* All the queue are unmasked, but actually only the ones
|
|
+ * mapped to this CPU will be unmasked
|
|
+ */
|
|
+ mvreg_write(pp, MVNETA_INTR_NEW_MASK,
|
|
+ MVNETA_RX_INTR_MASK_ALL |
|
|
+ MVNETA_TX_INTR_MASK_ALL |
|
|
+ MVNETA_MISCINTR_INTR_MASK);
|
|
+}
|
|
+
|
|
+static void mvneta_percpu_mask_interrupt(void *arg)
|
|
+{
|
|
+ struct mvneta_port *pp = arg;
|
|
+
|
|
+ /* All the queue are masked, but actually only the ones
|
|
+ * mapped to this CPU will be masked
|
|
+ */
|
|
+ mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
+ mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
+ mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
+}
|
|
+
|
|
+static void mvneta_percpu_clear_intr_cause(void *arg)
|
|
+{
|
|
+ struct mvneta_port *pp = arg;
|
|
+
|
|
+ /* All the queue are cleared, but actually only the ones
|
|
+ * mapped to this CPU will be cleared
|
|
+ */
|
|
+ mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0);
|
|
+ mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
|
|
+ mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0);
|
|
+}
|
|
+
|
|
/* This method sets defaults to the NETA port:
|
|
* Clears interrupt Cause and Mask registers.
|
|
* Clears all MAC tables.
|
|
@@ -1053,14 +1090,10 @@ static void mvneta_defaults_set(struct m
|
|
int max_cpu = num_present_cpus();
|
|
|
|
/* Clear all Cause registers */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_CAUSE, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
|
|
+ on_each_cpu(mvneta_percpu_clear_intr_cause, pp, true);
|
|
|
|
/* Mask all interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
+ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
|
|
mvreg_write(pp, MVNETA_INTR_ENABLE, 0);
|
|
|
|
/* Enable MBUS Retry bit16 */
|
|
@@ -2526,31 +2559,6 @@ static int mvneta_setup_txqs(struct mvne
|
|
return 0;
|
|
}
|
|
|
|
-static void mvneta_percpu_unmask_interrupt(void *arg)
|
|
-{
|
|
- struct mvneta_port *pp = arg;
|
|
-
|
|
- /* All the queue are unmasked, but actually only the ones
|
|
- * maped to this CPU will be unmasked
|
|
- */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK,
|
|
- MVNETA_RX_INTR_MASK_ALL |
|
|
- MVNETA_TX_INTR_MASK_ALL |
|
|
- MVNETA_MISCINTR_INTR_MASK);
|
|
-}
|
|
-
|
|
-static void mvneta_percpu_mask_interrupt(void *arg)
|
|
-{
|
|
- struct mvneta_port *pp = arg;
|
|
-
|
|
- /* All the queue are masked, but actually only the ones
|
|
- * maped to this CPU will be masked
|
|
- */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
-}
|
|
-
|
|
static void mvneta_start_dev(struct mvneta_port *pp)
|
|
{
|
|
int cpu;
|
|
@@ -2601,13 +2609,10 @@ static void mvneta_stop_dev(struct mvnet
|
|
mvneta_port_disable(pp);
|
|
|
|
/* Clear all ethernet port interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_CAUSE, 0);
|
|
+ on_each_cpu(mvneta_percpu_clear_intr_cause, pp, true);
|
|
|
|
/* Mask all ethernet port interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
+ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
|
|
|
|
mvneta_tx_reset(pp);
|
|
mvneta_rx_reset(pp);
|
|
@@ -2919,9 +2924,7 @@ static int mvneta_percpu_notifier(struct
|
|
}
|
|
|
|
/* Mask all ethernet port interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
+ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
|
|
napi_enable(&port->napi);
|
|
|
|
|
|
@@ -2936,14 +2939,8 @@ static int mvneta_percpu_notifier(struct
|
|
*/
|
|
mvneta_percpu_elect(pp);
|
|
|
|
- /* Unmask all ethernet port interrupts, as this
|
|
- * notifier is called for each CPU then the CPU to
|
|
- * Queue mapping is applied
|
|
- */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK,
|
|
- MVNETA_RX_INTR_MASK(rxq_number) |
|
|
- MVNETA_TX_INTR_MASK(txq_number) |
|
|
- MVNETA_MISCINTR_INTR_MASK);
|
|
+ /* Unmask all ethernet port interrupts */
|
|
+ on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
|
|
mvreg_write(pp, MVNETA_INTR_MISC_MASK,
|
|
MVNETA_CAUSE_PHY_STATUS_CHANGE |
|
|
MVNETA_CAUSE_LINK_CHANGE |
|
|
@@ -2954,9 +2951,7 @@ static int mvneta_percpu_notifier(struct
|
|
case CPU_DOWN_PREPARE_FROZEN:
|
|
netif_tx_stop_all_queues(pp->dev);
|
|
/* Mask all ethernet port interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_OLD_MASK, 0);
|
|
- mvreg_write(pp, MVNETA_INTR_MISC_MASK, 0);
|
|
+ on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
|
|
|
|
napi_synchronize(&port->napi);
|
|
napi_disable(&port->napi);
|
|
@@ -2972,10 +2967,7 @@ static int mvneta_percpu_notifier(struct
|
|
/* Check if a new CPU must be elected now this on is down */
|
|
mvneta_percpu_elect(pp);
|
|
/* Unmask all ethernet port interrupts */
|
|
- mvreg_write(pp, MVNETA_INTR_NEW_MASK,
|
|
- MVNETA_RX_INTR_MASK(rxq_number) |
|
|
- MVNETA_TX_INTR_MASK(txq_number) |
|
|
- MVNETA_MISCINTR_INTR_MASK);
|
|
+ on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
|
|
mvreg_write(pp, MVNETA_INTR_MISC_MASK,
|
|
MVNETA_CAUSE_PHY_STATUS_CHANGE |
|
|
MVNETA_CAUSE_LINK_CHANGE |
|