Commit Graph

8 Commits

Author SHA1 Message Date
Francois Romieu 47cccd7d7c ipg: fix Tx completion irq request
The current logic will only request an ack for the first pending
packet. No irq is triggered as soon as the CPU submits a few
packets a bit quickly.  Let's request an irq for every packet
instead.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2008-01-17 23:35:09 +01:00
Francois Romieu dafdec746f ipg: fix queue stop condition in the xmit handler
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2008-01-17 23:35:09 +01:00
Francois Romieu 0da1b995ae ipg: plug Tx completion leak
The Tx skb release could not free more than one skb per call.
Add it to the fact that the xmit handler does not check for
a queue full condition and you have a recipe to leak quickly.

Let's release every pending Tx descriptor which has been given
back to the host CPU by the network controller. The xmit handler
suggests that it is done through the IPG_TFC_TFDDONE bit.

Remove the former "curr" computing: it does not produce anything
usable in its current form.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2008-01-17 23:35:09 +01:00
Francois Romieu 227bc24d67 ipg: balance locking in irq handler
Spotted-by: <linux@horizon.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
2008-01-17 23:35:09 +01:00
Adrian Bunk 96fd74b2d9 drivers/net/ipg.c: cleanups
This patch contains the following cleanups:
- make ipg_nic_get_stats() static
- move DefaultPhyParam[] from ipg.h to ipg.c and make it static

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-25 03:31:13 -04:00
Al Viro 325a80715f ipg: endianness fixes
if your mask is host-endian, you should apply it after le64_to_cpu();
if it's little-endian - before.  Doing both (for the same mask and
little-endian value) is broken.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-14 12:41:52 -07:00
trem 1dad939ddb ipg.c doesn't compile with with CONFIG_HIGHMEM64G
I've tried to compile 2.6.23-rc8-mm2, but it fails on ipg.c with the
error : ERROR: "__udivdi3" [drivers/net/ipg.ko] undefined!

I've instigated a bit, and I've found this code in ipg.c :

static void ipg_nic_txfree(struct net_device *dev)
{
       struct ipg_nic_private *sp = netdev_priv(dev);
       void __iomem *ioaddr = sp->ioaddr;
       const unsigned int curr = ipg_r32(TFD_LIST_PTR_0) -
               (sp->txd_map / sizeof(struct ipg_tx)) - 1;
       unsigned int released, pending;

sp->txd_map is an u64
because :
	dma_addr_t txd_map;

And in asm-i386/types.h, I see :
#ifdef CONFIG_HIGHMEM64G
typedef u64 dma_addr_t;
#else
typedef u32 dma_addr_t;
#endif
I my config, I use CONFIG_HIGHMEM64G

sizeof(struct ipg_tx) is an u32
So the div failed on i386 because of u64 / u32.

[akpm@linux-foundation.org: cleanups]
Cc: Sorbica Shieh <sorbica@icplus.com.tw>
Cc: Jesse Huang <jesse@icplus.com.tw>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:54:28 -07:00
Francois Romieu 1202d6ff35 [IPG]: add IP1000A driver to kernel tree
Signed-off-by: Jesse Huang <jesse@icplus.com.tw>
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:33 -07:00