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kernel: fix more bgmac dma init/cleanup issues 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 45422
owl
Felix Fietkau 2015-04-13 20:08:30 +00:00
parent 232c61742e
commit 87f854059a
6 changed files with 32 additions and 9 deletions
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22
target/linux/generic/patches-3.18/077-07-bgmac-simplify-rx-DMA-error-handling.patch
View File

@ -49,7 +49,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
- slot->dma_addr,
- BGMAC_RX_BUF_SIZE,
- DMA_FROM_DEVICE);
+ kfree(buf);
+ put_page(virt_to_head_page(buf));
break;
}
@ -99,3 +99,23 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
}
return handled;
@@ -528,14 +512,14 @@ static void bgmac_dma_rx_ring_free(struc
for (i = 0; i < ring->num_slots; i++) {
slot = &ring->slots[i];
- if (!slot->buf)
+ if (!slot->dma_addr)
continue;
- if (slot->dma_addr)
- dma_unmap_single(dma_dev, slot->dma_addr,
- BGMAC_RX_BUF_SIZE,
- DMA_FROM_DEVICE);
+ dma_unmap_single(dma_dev, slot->dma_addr,
+ BGMAC_RX_BUF_SIZE,
+ DMA_FROM_DEVICE);
put_page(virt_to_head_page(slot->buf));
+ slot->dma_addr = 0;
}
}

2
target/linux/generic/patches-3.18/077-08-bgmac-add-check-for-oversized-packets.patch
View File

@ -18,7 +18,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+ if (len > BGMAC_RX_ALLOC_SIZE) {
+ bgmac_err(bgmac, "Found oversized packet at slot %d, DMA issue!\n",
+ ring->start);
+ kfree(buf);
+ put_page(virt_to_head_page(buf));
+ break;
+ }
+

7
target/linux/generic/patches-3.18/077-10-bgmac-simplify-dma-init-cleanup.patch
View File

@ -152,15 +152,18 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
err = request_irq(bgmac->core->irq, bgmac_interrupt, IRQF_SHARED,
KBUILD_MODNAME, net_dev);
@@ -1273,6 +1270,7 @@ static int bgmac_open(struct net_device
@@ -1271,8 +1268,10 @@ static int bgmac_open(struct net_device
phy_start(bgmac->phy_dev);
netif_carrier_on(net_dev);
+ return 0;
err_out:
+ bgmac_dma_cleanup(bgmac);
return err;
}
@@ -1289,6 +1287,7 @@ static int bgmac_stop(struct net_device
@@ -1289,6 +1288,7 @@ static int bgmac_stop(struct net_device
free_irq(bgmac->core->irq, net_dev);
bgmac_chip_reset(bgmac);

2
target/linux/generic/patches-3.18/077-12-bgmac-drop-ring-num_slots.patch
View File

@ -44,7 +44,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
- for (i = 0; i < ring->num_slots; i++) {
+ for (i = 0; i < BGMAC_RX_RING_SLOTS; i++) {
slot = &ring->slots[i];
if (!slot->buf)
if (!slot->dma_addr)
continue;
@@ -543,7 +543,8 @@ static void bgmac_dma_rx_ring_free(struc
}

2
target/linux/generic/patches-3.18/077-14-bgmac-reset-all-4-GMAC-cores-on-init.patch
View File

@ -12,7 +12,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1604,8 +1604,11 @@ static int bgmac_probe(struct bcma_devic
@@ -1605,8 +1605,11 @@ static int bgmac_probe(struct bcma_devic
ns_core = bcma_find_core_unit(core->bus,
BCMA_CORE_MAC_GBIT,
ns_gmac);

6
target/linux/generic/patches-3.18/773-bgmac-add-srab-switch.patch
View File

@ -12,7 +12,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
#include <bcm47xx_nvram.h>
static const struct bcma_device_id bgmac_bcma_tbl[] = {
@@ -1519,6 +1520,17 @@ static void bgmac_mii_unregister(struct
@@ -1520,6 +1521,17 @@ static void bgmac_mii_unregister(struct
mdiobus_free(mii_bus);
}
@ -30,7 +30,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
/**************************************************
* BCMA bus ops
**************************************************/
@@ -1645,6 +1657,16 @@ static int bgmac_probe(struct bcma_devic
@@ -1646,6 +1658,16 @@ static int bgmac_probe(struct bcma_devic
net_dev->hw_features = net_dev->features;
net_dev->vlan_features = net_dev->features;
@ -47,7 +47,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
err = register_netdev(bgmac->net_dev);
if (err) {
bgmac_err(bgmac, "Cannot register net device\n");
@@ -1671,6 +1693,10 @@ static void bgmac_remove(struct bcma_dev
@@ -1672,6 +1694,10 @@ static void bgmac_remove(struct bcma_dev
{
struct bgmac *bgmac = bcma_get_drvdata(core);