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qlge: Turn on RX header split based on platform. 

Using 4-byte aligned headers is problematic for some architectures.
Since qlge uses 4-byte aligned rx buffers we split headers for these
architectures into a separate buffer and then recopy to align on 2-byte boundary.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ron Mercer 2010-01-02 10:37:42 +00:00 committed by David S. Miller
parent c36531b9b2
commit 572c526fb1
2 changed files with 18 additions and 7 deletions
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19
drivers/net/qlge/qlge.h
View File

@ -54,12 +54,8 @@
#define RX_RING_SHADOW_SPACE (sizeof(u64) + \
MAX_DB_PAGES_PER_BQ(NUM_SMALL_BUFFERS) * sizeof(u64) + \
MAX_DB_PAGES_PER_BQ(NUM_LARGE_BUFFERS) * sizeof(u64))
#define SMALL_BUFFER_SIZE 512
#define SMALL_BUF_MAP_SIZE (SMALL_BUFFER_SIZE / 2)
#define LARGE_BUFFER_MAX_SIZE 8192
#define LARGE_BUFFER_MIN_SIZE 2048
#define MAX_SPLIT_SIZE 1023
#define QLGE_SB_PAD 32
#define MAX_CQ 128
#define DFLT_COALESCE_WAIT 100 /* 100 usec wait for coalescing */
@ -737,6 +733,21 @@ enum {
PRB_MX_DATA = 0xfc, /* Use semaphore */
};
#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
#define SMALL_BUFFER_SIZE 256
#define SMALL_BUF_MAP_SIZE SMALL_BUFFER_SIZE
#define SPLT_SETTING FSC_DBRST_1024
#define SPLT_LEN 0
#define QLGE_SB_PAD 0
#else
#define SMALL_BUFFER_SIZE 512
#define SMALL_BUF_MAP_SIZE (SMALL_BUFFER_SIZE / 2)
#define SPLT_SETTING FSC_SH
#define SPLT_LEN (SPLT_HDR_EP | \
min(SMALL_BUF_MAP_SIZE, 1023))
#define QLGE_SB_PAD 32
#endif
/*
* CAM output format.
*/

6
drivers/net/qlge/qlge_main.c
View File

@ -3332,15 +3332,15 @@ static int ql_adapter_initialize(struct ql_adapter *qdev)
/* Enable the function, set pagesize, enable error checking. */
value = FSC_FE | FSC_EPC_INBOUND | FSC_EPC_OUTBOUND |
FSC_EC | FSC_VM_PAGE_4K | FSC_SH;
FSC_EC | FSC_VM_PAGE_4K;
value |= SPLT_SETTING;
/* Set/clear header splitting. */
mask = FSC_VM_PAGESIZE_MASK |
FSC_DBL_MASK | FSC_DBRST_MASK | (value << 16);
ql_write32(qdev, FSC, mask | value);
ql_write32(qdev, SPLT_HDR, SPLT_HDR_EP |
min(SMALL_BUF_MAP_SIZE, MAX_SPLIT_SIZE));
ql_write32(qdev, SPLT_HDR, SPLT_LEN);
/* Set RX packet routing to use port/pci function on which the
* packet arrived on in addition to usual frame routing.