From: Olof Johansson <olof@lixom.net>
To: jgarzik@pobox.com
Cc: netdev@vger.kernel.org
Subject: [PATCH 5/9] pasemi_mac: Enable L2 caching of packet headers
Date: Fri, 22 Jun 2007 15:05:32 -0500 [thread overview]
Message-ID: <20070622200532.GF11723@lixom.net> (raw)
In-Reply-To: 20070622194720.614405000@lixom.net
[-- Attachment #1: pasemi_mac-cache-headers --]
[-- Type: text/plain, Size: 1923 bytes --]
Enable settings to target L2 for the first few cachelines of the packet,
since we'll access them to get to the various headers.
Signed-off-by: Olof Johansson <olof@lixom.net>
Index: netdev-2.6/drivers/net/pasemi_mac.c
===================================================================
--- netdev-2.6.orig/drivers/net/pasemi_mac.c
+++ netdev-2.6/drivers/net/pasemi_mac.c
@@ -216,7 +216,7 @@ static int pasemi_mac_setup_rx_resources
PAS_DMA_RXCHAN_BASEU_SIZ(RX_RING_SIZE >> 2));
write_dma_reg(mac, PAS_DMA_RXCHAN_CFG(chan_id),
- PAS_DMA_RXCHAN_CFG_HBU(1));
+ PAS_DMA_RXCHAN_CFG_HBU(2));
write_dma_reg(mac, PAS_DMA_RXINT_BASEL(mac->dma_if),
PAS_DMA_RXINT_BASEL_BRBL(__pa(ring->buffers)));
@@ -225,6 +225,9 @@ static int pasemi_mac_setup_rx_resources
PAS_DMA_RXINT_BASEU_BRBH(__pa(ring->buffers) >> 32) |
PAS_DMA_RXINT_BASEU_SIZ(RX_RING_SIZE >> 3));
+ write_dma_reg(mac, PAS_DMA_RXINT_CFG(mac->dma_if),
+ PAS_DMA_RXINT_CFG_DHL(2));
+
ring->next_to_fill = 0;
ring->next_to_clean = 0;
Index: netdev-2.6/drivers/net/pasemi_mac.h
===================================================================
--- netdev-2.6.orig/drivers/net/pasemi_mac.h
+++ netdev-2.6/drivers/net/pasemi_mac.h
@@ -218,6 +218,14 @@ enum {
#define PAS_DMA_RXINT_RCMDSTA_ACT 0x00010000
#define PAS_DMA_RXINT_RCMDSTA_DROPS_M 0xfffe0000
#define PAS_DMA_RXINT_RCMDSTA_DROPS_S 17
+#define PAS_DMA_RXINT_CFG(i) (0x204+(i)*_PAS_DMA_RXINT_STRIDE)
+#define PAS_DMA_RXINT_CFG_DHL_M 0x07000000
+#define PAS_DMA_RXINT_CFG_DHL_S 24
+#define PAS_DMA_RXINT_CFG_DHL(x) (((x) << PAS_DMA_RXINT_CFG_DHL_S) & \
+ PAS_DMA_RXINT_CFG_DHL_M)
+#define PAS_DMA_RXINT_CFG_WIF 0x00000002
+#define PAS_DMA_RXINT_CFG_WIL 0x00000001
+
#define PAS_DMA_RXINT_INCR(i) (0x210+(i)*_PAS_DMA_RXINT_STRIDE)
#define PAS_DMA_RXINT_INCR_INCR_M 0x0000ffff
#define PAS_DMA_RXINT_INCR_INCR_S 0
--
next prev parent reply other threads:[~2007-06-22 20:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070622194720.614405000@lixom.net>
2007-06-22 20:04 ` [PATCH 1/9] pasemi_mac: Fix TX interrupt threshold Olof Johansson
2007-07-02 12:37 ` Jeff Garzik
2007-06-22 20:05 ` [PATCH 2/9] pasemi_mac: Clean TX ring in poll Olof Johansson
2007-07-02 12:34 ` Jeff Garzik
2007-07-03 20:31 ` Olof Johansson
2007-06-22 20:05 ` [PATCH 3/9] pasemi_mac: Abstract out register access Olof Johansson
2007-07-02 12:32 ` Jeff Garzik
2007-06-22 20:05 ` [PATCH 4/9] pasemi_mac: Use MMIO instead of pci config accessors Olof Johansson
2007-07-02 12:37 ` Jeff Garzik
2007-06-22 20:05 ` Olof Johansson [this message]
2007-06-22 20:05 ` [PATCH 6/9] pasemi_mac: Simplify memcpy for short receives Olof Johansson
2007-06-22 20:05 ` [PATCH 7/9] pasemi_mac: Minor performance tweaks Olof Johansson
2007-06-22 20:05 ` [PATCH 8/9] pasemi_mac: Reduce locking when cleaning TX ring Olof Johansson
2007-06-22 20:05 ` [PATCH 9/9] pasemi_mac: Enable LLTX Olof Johansson
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