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authorAndy Fleming <afleming@freescale.com>2009-02-04 16:43:44 -0800
committerDavid S. Miller <davem@davemloft.net>2009-02-04 16:43:44 -0800
commit4d7902f22b0804730b80f7a4147f676430248a3a (patch)
treef3a2eb354156760e9f07b02774006fb2103aa20e /drivers/net/gianfar_sysfs.c
parent0fd56bb5be6455d0d42241e65aed057244665e5e (diff)
downloadlinux-4d7902f22b0804730b80f7a4147f676430248a3a.tar.bz2
gianfar: Fix stashing support
Stashing is only supported on the 85xx (e500-based) SoCs. The 83xx and 86xx chips don't have a proper cache for this. U-Boot has been updated to add stashing properties to the device tree nodes of gianfar devices on 85xx. So now we modify Linux to keep stashing off unless those properties are there. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/gianfar_sysfs.c')
-rw-r--r--drivers/net/gianfar_sysfs.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/gianfar_sysfs.c b/drivers/net/gianfar_sysfs.c
index 74e0b4d42587..dd26da74f27a 100644
--- a/drivers/net/gianfar_sysfs.c
+++ b/drivers/net/gianfar_sysfs.c
@@ -53,6 +53,9 @@ static ssize_t gfar_set_bd_stash(struct device *dev,
u32 temp;
unsigned long flags;
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BD_STASHING))
+ return count;
+
/* Find out the new setting */
if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
new_setting = 1;
@@ -100,6 +103,9 @@ static ssize_t gfar_set_rx_stash_size(struct device *dev,
u32 temp;
unsigned long flags;
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING))
+ return count;
+
spin_lock_irqsave(&priv->rxlock, flags);
if (length > priv->rx_buffer_size)
goto out;
@@ -152,6 +158,9 @@ static ssize_t gfar_set_rx_stash_index(struct device *dev,
u32 temp;
unsigned long flags;
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING))
+ return count;
+
spin_lock_irqsave(&priv->rxlock, flags);
if (index > priv->rx_stash_size)
goto out;
@@ -294,12 +303,9 @@ void gfar_init_sysfs(struct net_device *dev)
int rc;
/* Initialize the default values */
- priv->rx_stash_size = DEFAULT_STASH_LENGTH;
- priv->rx_stash_index = DEFAULT_STASH_INDEX;
priv->fifo_threshold = DEFAULT_FIFO_TX_THR;
priv->fifo_starve = DEFAULT_FIFO_TX_STARVE;
priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF;
- priv->bd_stash_en = DEFAULT_BD_STASH;
/* Create our sysfs files */
rc = device_create_file(&dev->dev, &dev_attr_bd_stash);