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-rw-r--r--arch/powerpc/include/asm/dcr-regs.h7
-rw-r--r--drivers/net/ibm_newemac/mal.c60
2 files changed, 62 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/dcr-regs.h b/arch/powerpc/include/asm/dcr-regs.h
index 29b0ecef980..7b833ff9c14 100644
--- a/arch/powerpc/include/asm/dcr-regs.h
+++ b/arch/powerpc/include/asm/dcr-regs.h
@@ -68,6 +68,13 @@
#define SDR0_UART3 0x0123
#define SDR0_CUST0 0x4000
+/* SDR for 405EZ */
+#define DCRN_SDR_ICINTSTAT 0x4510
+#define ICINTSTAT_ICRX 0x80000000
+#define ICINTSTAT_ICTX0 0x40000000
+#define ICINTSTAT_ICTX1 0x20000000
+#define ICINTSTAT_ICTX 0x60000000
+
/*
* All those DCR register addresses are offsets from the base address
* for the SRAM0 controller (e.g. 0x20 on 440GX). The base address is
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c
index 10c267b2b96..1839d3f154a 100644
--- a/drivers/net/ibm_newemac/mal.c
+++ b/drivers/net/ibm_newemac/mal.c
@@ -28,6 +28,7 @@
#include <linux/delay.h>
#include "core.h"
+#include <asm/dcr-regs.h>
static int mal_count;
@@ -279,6 +280,10 @@ static irqreturn_t mal_txeob(int irq, void *dev_instance)
mal_schedule_poll(mal);
set_mal_dcrn(mal, MAL_TXEOBISR, r);
+ if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
+ mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
+ (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICTX));
+
return IRQ_HANDLED;
}
@@ -293,6 +298,10 @@ static irqreturn_t mal_rxeob(int irq, void *dev_instance)
mal_schedule_poll(mal);
set_mal_dcrn(mal, MAL_RXEOBISR, r);
+ if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
+ mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
+ (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICRX));
+
return IRQ_HANDLED;
}
@@ -336,6 +345,25 @@ static irqreturn_t mal_rxde(int irq, void *dev_instance)
return IRQ_HANDLED;
}
+static irqreturn_t mal_int(int irq, void *dev_instance)
+{
+ struct mal_instance *mal = dev_instance;
+ u32 esr = get_mal_dcrn(mal, MAL_ESR);
+
+ if (esr & MAL_ESR_EVB) {
+ /* descriptor error */
+ if (esr & MAL_ESR_DE) {
+ if (esr & MAL_ESR_CIDT)
+ return mal_rxde(irq, dev_instance);
+ else
+ return mal_txde(irq, dev_instance);
+ } else { /* SERR */
+ return mal_serr(irq, dev_instance);
+ }
+ }
+ return IRQ_HANDLED;
+}
+
void mal_poll_disable(struct mal_instance *mal, struct mal_commac *commac)
{
/* Spinlock-type semantics: only one caller disable poll at a time */
@@ -493,6 +521,8 @@ static int __devinit mal_probe(struct of_device *ofdev,
unsigned int dcr_base;
const u32 *prop;
u32 cfg;
+ unsigned long irqflags;
+ irq_handler_t hdlr_serr, hdlr_txde, hdlr_rxde;
mal = kzalloc(sizeof(struct mal_instance), GFP_KERNEL);
if (!mal) {
@@ -542,11 +572,21 @@ static int __devinit mal_probe(struct of_device *ofdev,
goto fail;
}
+ if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez"))
+ mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
+ MAL_FTR_COMMON_ERR_INT);
+
mal->txeob_irq = irq_of_parse_and_map(ofdev->node, 0);
mal->rxeob_irq = irq_of_parse_and_map(ofdev->node, 1);
mal->serr_irq = irq_of_parse_and_map(ofdev->node, 2);
- mal->txde_irq = irq_of_parse_and_map(ofdev->node, 3);
- mal->rxde_irq = irq_of_parse_and_map(ofdev->node, 4);
+
+ if (mal_has_feature(mal, MAL_FTR_COMMON_ERR_INT)) {
+ mal->txde_irq = mal->rxde_irq = mal->serr_irq;
+ } else {
+ mal->txde_irq = irq_of_parse_and_map(ofdev->node, 3);
+ mal->rxde_irq = irq_of_parse_and_map(ofdev->node, 4);
+ }
+
if (mal->txeob_irq == NO_IRQ || mal->rxeob_irq == NO_IRQ ||
mal->serr_irq == NO_IRQ || mal->txde_irq == NO_IRQ ||
mal->rxde_irq == NO_IRQ) {
@@ -608,16 +648,26 @@ static int __devinit mal_probe(struct of_device *ofdev,
sizeof(struct mal_descriptor) *
mal_rx_bd_offset(mal, i));
- err = request_irq(mal->serr_irq, mal_serr, 0, "MAL SERR", mal);
+ if (mal_has_feature(mal, MAL_FTR_COMMON_ERR_INT)) {
+ irqflags = IRQF_SHARED;
+ hdlr_serr = hdlr_txde = hdlr_rxde = mal_int;
+ } else {
+ irqflags = 0;
+ hdlr_serr = mal_serr;
+ hdlr_txde = mal_txde;
+ hdlr_rxde = mal_rxde;
+ }
+
+ err = request_irq(mal->serr_irq, hdlr_serr, irqflags, "MAL SERR", mal);
if (err)
goto fail2;
- err = request_irq(mal->txde_irq, mal_txde, 0, "MAL TX DE", mal);
+ err = request_irq(mal->txde_irq, hdlr_txde, irqflags, "MAL TX DE", mal);
if (err)
goto fail3;
err = request_irq(mal->txeob_irq, mal_txeob, 0, "MAL TX EOB", mal);
if (err)
goto fail4;
- err = request_irq(mal->rxde_irq, mal_rxde, 0, "MAL RX DE", mal);
+ err = request_irq(mal->rxde_irq, hdlr_rxde, irqflags, "MAL RX DE", mal);
if (err)
goto fail5;
err = request_irq(mal->rxeob_irq, mal_rxeob, 0, "MAL RX EOB", mal);