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only use one xmit buffer for ASDG

This commit is contained in:
chopps 1995-10-01 19:30:22 +00:00
parent bb4bce0db3
commit 01d63931a5
1 changed files with 7 additions and 9 deletions
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16
sys/arch/amiga/dev/if_ed.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ed.c,v 1.15 1995/08/20 02:52:48 chopps Exp $ */
/* $NetBSD: if_ed.c,v 1.16 1995/10/01 19:30:22 chopps Exp $ */
/*
* Device driver for National Semiconductor DS8390/WD83C690 based ethernet
@ -203,38 +203,36 @@ edattach(parent, self, aux)
if (zap->manid == HYDRA_MANID) {
sc->mem_start = zap->va;
sc->mem_size = 16384;
sc->nic_addr = sc->mem_start + HYDRA_NIC_BASE;
prom = (u_char *)sc->mem_start + HYDRA_ADDRPROM;
} else {
sc->mem_start = zap->va + 0x8000;
sc->mem_size = 16384;
sc->nic_addr = zap->va + ASDG_NIC_BASE;
prom = (u_char *)sc->nic_addr + ASDG_ADDRPROM;
}
sc->cr_proto = ED_CR_RD2;
sc->tx_page_start = 0;
#define memsize 16384
sc->mem_size = memsize;
sc->mem_end = sc->mem_start + memsize;
sc->mem_end = sc->mem_start + sc->mem_size;
/*
* Use one xmit buffer if < 16k, two buffers otherwise (if not told
* otherwise).
*/
if ((memsize < 16384) || (cf->cf_flags & ED_FLAGS_NO_MULTI_BUFFERING))
if ((sc->mem_size < 16384) || zap->manid == ASDG_MANID
|| (cf->cf_flags & ED_FLAGS_NO_MULTI_BUFFERING))
sc->txb_cnt = 1;
else
sc->txb_cnt = 2;
sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE;
sc->rec_page_stop = sc->tx_page_start + (memsize >> ED_PAGE_SHIFT);
sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT);
sc->mem_ring =
sc->mem_start + ((sc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT);
#undef memsize
/*
* read the ethernet address from the board
*/