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brcm47xx: bgmac: b44: add support for Byte Queue Limits 

This adds support for Byte Queue Limits in bgmac and b44, now it is
possible to use more advanced network queue control algorithms.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 38038
lede-17.01
Hauke Mehrtens 2013-09-18 15:19:25 +00:00
parent 6dd2e9ae2c
commit 4f93bde681
4 changed files with 106 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
target/linux/brcm47xx/patches-3.10/730-b44-add-support-for-Byte-Queue-Limits.patch Normal file
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@ -0,0 +1,46 @@
From: Hauke Mehrtens <hauke@hauke-m.de>
b44: add support for Byte Queue Limits
--- a/drivers/net/ethernet/broadcom/b44.c
+++ b/drivers/net/ethernet/broadcom/b44.c
@@ -622,6 +622,7 @@ static void b44_timer(unsigned long __op
static void b44_tx(struct b44 *bp)
{
u32 cur, cons;
+ unsigned bytes_compl = 0, pkts_compl = 0;
cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
cur /= sizeof(struct dma_desc);
@@ -638,9 +639,14 @@ static void b44_tx(struct b44 *bp)
skb->len,
DMA_TO_DEVICE);
rp->skb = NULL;
+
+ bytes_compl += skb->len;
+ pkts_compl++;
+
dev_kfree_skb_irq(skb);
}
+ netdev_completed_queue(bp->dev, pkts_compl, bytes_compl);
bp->tx_cons = cons;
if (netif_queue_stopped(bp->dev) &&
TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
@@ -1044,6 +1050,8 @@ static netdev_tx_t b44_start_xmit(struct
if (bp->flags & B44_FLAG_REORDER_BUG)
br32(bp, B44_DMATX_PTR);
+ netdev_sent_queue(dev, skb->len);
+
if (TX_BUFFS_AVAIL(bp) < 1)
netif_stop_queue(dev);
@@ -1442,6 +1450,8 @@ static void b44_init_hw(struct b44 *bp,
val = br32(bp, B44_ENET_CTRL);
bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
+
+ netdev_reset_queue(bp->dev);
}
static int b44_open(struct net_device *dev)

50
target/linux/brcm47xx/patches-3.10/740-bgmac-add-support-for-Byte-Queue-Limits.patch Normal file
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@ -0,0 +1,50 @@
From: Hauke Mehrtens <hauke@hauke-m.de>
bgmac: add support for Byte Queue Limits
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -178,6 +178,7 @@ static void bgmac_dma_tx_free(struct bgm
struct device *dma_dev = bgmac->core->dma_dev;
int empty_slot;
bool freed = false;
+ unsigned bytes_compl = 0, pkts_compl = 0;
/* The last slot that hardware didn't consume yet */
empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
@@ -195,6 +196,9 @@ static void bgmac_dma_tx_free(struct bgm
slot->skb->len, DMA_TO_DEVICE);
slot->dma_addr = 0;
+ bytes_compl += slot->skb->len;
+ pkts_compl++;
+
/* Free memory! :) */
dev_kfree_skb(slot->skb);
slot->skb = NULL;
@@ -208,6 +212,8 @@ static void bgmac_dma_tx_free(struct bgm
freed = true;
}
+ netdev_completed_queue(bgmac->net_dev, pkts_compl, bytes_compl);
+
if (freed && netif_queue_stopped(bgmac->net_dev))
netif_wake_queue(bgmac->net_dev);
}
@@ -987,6 +993,8 @@ static void bgmac_chip_reset(struct bgma
bgmac_set(bgmac, BGMAC_PHY_CNTL, BGMAC_PC_MTE);
bgmac_miiconfig(bgmac);
bgmac_phy_init(bgmac);
+
+ netdev_reset_queue(bgmac->net_dev);
bgmac->int_status = 0;
}
@@ -1198,6 +1206,8 @@ static netdev_tx_t bgmac_start_xmit(stru
struct bgmac *bgmac = netdev_priv(net_dev);
struct bgmac_dma_ring *ring;
+ netdev_sent_queue(net_dev, skb->len);
+
/* No QOS support yet */
ring = &bgmac->tx_ring[0];
return bgmac_dma_tx_add(bgmac, ring, skb);

10
target/linux/brcm47xx/patches-3.10/770-bgmac-phylib.patch
View File

@ -10,7 +10,7 @@
They can be found on BCM47xx SoCs and provide gigabit ethernet.
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1219,27 +1219,14 @@ static int bgmac_set_mac_address(struct
@@ -1229,27 +1229,14 @@ static int bgmac_set_mac_address(struct
static int bgmac_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
{
struct bgmac *bgmac = netdev_priv(net_dev);
@ -45,7 +45,7 @@
}
static const struct net_device_ops bgmac_netdev_ops = {
@@ -1261,61 +1248,18 @@ static int bgmac_get_settings(struct net
@@ -1271,61 +1258,18 @@ static int bgmac_get_settings(struct net
{
struct bgmac *bgmac = netdev_priv(net_dev);
@ -111,7 +111,7 @@
static void bgmac_get_drvinfo(struct net_device *net_dev,
struct ethtool_drvinfo *info)
@@ -1326,6 +1270,7 @@ static void bgmac_get_drvinfo(struct net
@@ -1336,6 +1280,7 @@ static void bgmac_get_drvinfo(struct net
static const struct ethtool_ops bgmac_ethtool_ops = {
.get_settings = bgmac_get_settings,
@ -119,7 +119,7 @@
.get_drvinfo = bgmac_get_drvinfo,
};
@@ -1344,10 +1289,42 @@ static int bgmac_mii_write(struct mii_bu
@@ -1354,10 +1299,42 @@ static int bgmac_mii_write(struct mii_bu
return bgmac_phy_write(bus->priv, mii_id, regnum, value);
}
@ -162,7 +162,7 @@
mii_bus = mdiobus_alloc();
if (!mii_bus)
@@ -1378,7 +1355,29 @@ static int bgmac_mii_register(struct bgm
@@ -1388,7 +1365,29 @@ static int bgmac_mii_register(struct bgm
bgmac->mii_bus = mii_bus;

10
target/linux/brcm47xx/patches-3.10/780-b44-phylib.patch
View File

@ -47,7 +47,7 @@
}
static int b44_phy_reset(struct b44 *bp)
@@ -1821,102 +1824,24 @@ static int b44_get_settings(struct net_d
@@ -1831,102 +1834,24 @@ static int b44_get_settings(struct net_d
{
struct b44 *bp = netdev_priv(dev);
@ -155,7 +155,7 @@
}
static void b44_get_ringparam(struct net_device *dev,
@@ -2092,20 +2017,81 @@ static const struct ethtool_ops b44_etht
@@ -2102,20 +2027,81 @@ static const struct ethtool_ops b44_etht
static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
@ -239,7 +239,7 @@
static int b44_get_invariants(struct b44 *bp)
{
struct ssb_device *sdev = bp->sdev;
@@ -2225,12 +2211,38 @@ static int b44_init_one(struct ssb_devic
@@ -2235,12 +2221,38 @@ static int b44_init_one(struct ssb_devic
goto err_out_powerdown;
}
@ -284,7 +284,7 @@
/* By default, advertise all speed/duplex settings. */
bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
@@ -2262,6 +2274,16 @@ static int b44_init_one(struct ssb_devic
@@ -2272,6 +2284,16 @@ static int b44_init_one(struct ssb_devic
return 0;
@ -301,7 +301,7 @@
err_out_powerdown:
ssb_bus_may_powerdown(sdev->bus);
@@ -2275,8 +2297,12 @@ out:
@@ -2285,8 +2307,12 @@ out:
static void b44_remove_one(struct ssb_device *sdev)
{
struct net_device *dev = ssb_get_drvdata(sdev);