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Take advantage of the new physically contiguous 9K jumbos in 8.

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This commit is contained in:
Andrew Gallatin 2008-01-22 22:04:31 +00:00
parent 7ad783ffe7
commit b0f7b92207
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=175579
2 changed files with 29 additions and 3 deletions
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26
sys/dev/mxge/if_mxge.c
View file

@ -2204,14 +2204,19 @@ mxge_get_buf_big(struct mxge_slice_state *ss, bus_dmamap_t map, int idx)
goto done;
}
rx->info[idx].m = m;
rx->shadow[idx].addr_low =
htobe32(MXGE_LOWPART_TO_U32(seg->ds_addr));
rx->shadow[idx].addr_high =
htobe32(MXGE_HIGHPART_TO_U32(seg->ds_addr));
for (i = 0; i < cnt; i++) {
#if MXGE_VIRT_JUMBOS
for (i = 1; i < cnt; i++) {
rx->shadow[idx + i].addr_low =
htobe32(MXGE_LOWPART_TO_U32(seg[i].ds_addr));
rx->shadow[idx + i].addr_high =
htobe32(MXGE_HIGHPART_TO_U32(seg[i].ds_addr));
}
#endif
done:
for (i = 0; i < rx->nbufs; i++) {
@ -2911,13 +2916,22 @@ mxge_alloc_slice_rings(struct mxge_slice_state *ss, int rx_ring_entries,
err = bus_dma_tag_create(sc->parent_dmat, /* parent */
1, /* alignment */
#if MXGE_VIRT_JUMBOS
4096, /* boundary */
#else
0, /* boundary */
#endif
BUS_SPACE_MAXADDR, /* low */
BUS_SPACE_MAXADDR, /* high */
NULL, NULL, /* filter */
3*4096, /* maxsize */
#if MXGE_VIRT_JUMBOS
3, /* num segs */
4096, /* maxsegsize */
4096, /* maxsegsize*/
#else
1, /* num segs */
MJUM9BYTES, /* maxsegsize*/
#endif
BUS_DMA_ALLOCNOW, /* flags */
NULL, NULL, /* lock */
&ss->rx_big.dmat); /* tag */
@ -3086,6 +3100,7 @@ mxge_choose_params(int mtu, int *big_buf_size, int *cl_size, int *nbufs)
*nbufs = 1;
return;
}
#if MXGE_VIRT_JUMBOS
/* now we need to use virtually contiguous buffers */
*cl_size = MJUM9BYTES;
*big_buf_size = 4096;
@ -3093,6 +3108,11 @@ mxge_choose_params(int mtu, int *big_buf_size, int *cl_size, int *nbufs)
/* needs to be a power of two, so round up */
if (*nbufs == 3)
*nbufs = 4;
#else
*cl_size = MJUM9BYTES;
*big_buf_size = MJUM9BYTES;
*nbufs = 1;
#endif
}
static int

6
sys/dev/mxge/if_mxge_var.h
View file

@ -39,6 +39,12 @@ POSSIBILITY OF SUCH DAMAGE.
#define MXGE_EEPROM_STRINGS_SIZE 256
#define MXGE_MAX_SEND_DESC 128
#if (__FreeBSD_version < 800005)
#define MXGE_VIRT_JUMBOS 1
#else
#define MXGE_VIRT_JUMBOS 0
#endif
typedef struct {
void *addr;
bus_addr_t bus_addr;