From: Brice Goglin <brice@myri.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: netdev@vger.kernel.org
Subject: [PATCH 3/4] myri10ge: fix management of >4kB allocated pages
Date: Wed, 21 Mar 2007 19:46:57 +0100 [thread overview]
Message-ID: <46017DA1.2050500@myri.com> (raw)
In-Reply-To: <46017CB8.3060807@myri.com>
Fix management of allocated physical pages when the architecture
page size is not 4kB since the firmware cannot cross 4K boundary.
Signed-off-by: Brice Goglin <brice@myri.com>
---
drivers/net/myri10ge/myri10ge.c | 8 ++++++++
1 file changed, 8 insertions(+)
Index: linux-rc/drivers/net/myri10ge/myri10ge.c
===================================================================
--- linux-rc.orig/drivers/net/myri10ge/myri10ge.c 2007-03-18 21:14:23.000000000 +0100
+++ linux-rc/drivers/net/myri10ge/myri10ge.c 2007-03-21 19:30:38.000000000 +0100
@@ -905,6 +905,14 @@
(rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE)) {
/* we can use part of previous page */
get_page(rx->page);
+#if MYRI10GE_ALLOC_SIZE > 4096
+ /* Firmware cannot cross 4K boundary.. */
+ if ((rx->page_offset >> 12) !=
+ ((rx->page_offset + bytes - 1) >> 12)) {
+ rx->page_offset =
+ (rx->page_offset + bytes) & ~4095;
+ }
+#endif
} else {
/* we need a new page */
page =
next prev parent reply other threads:[~2007-03-21 18:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-18 20:33 [PATCH 0/3] myri10ge updates for 2.6.21 Brice Goglin
2007-03-18 20:34 ` [PATCH 1/3] myri10ge: use regular firmware on Serverworks HT2100 Brice Goglin
2007-03-18 20:35 ` [PATCH 2/3] myri10ge: update wcfifo and intr_coal_delay default values Brice Goglin
2007-03-18 20:35 ` [PATCH 3/3] myri10ge: update driver version to 1.3.0-1.225 Brice Goglin
2007-03-21 18:43 ` [RESEND 0/4] was: [PATCH 0/3] myri10ge updates for 2.6.21 Brice Goglin
2007-03-21 18:45 ` [PATCH 1/4] myri10ge: Serverworks HT2100 provides aligned PCIe completion Brice Goglin
2007-03-23 5:50 ` Jeff Garzik
2007-03-21 18:45 ` [PATCH 2/4] myri10ge: update wcfifo and intr_coal_delay default values Brice Goglin
2007-03-21 18:46 ` Brice Goglin [this message]
2007-03-21 18:47 ` [PATCH 4/4] myri10ge: update driver version to 1.3.0-1.226 Brice Goglin
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