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Implemented some optimizations which result in 14 fewer instructions in the

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receive path.
This commit is contained in:
dg 2000-06-19 00:58:34 +00:00
parent 71bbc71505
commit c7d4da6e78
2 changed files with 12 additions and 4 deletions
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8
sys/dev/fxp/if_fxp.c
View File

@ -125,11 +125,15 @@ static __inline void
fxp_lwcopy(src, dst) fxp_lwcopy(src, dst)
volatile u_int32_t *src, *dst; volatile u_int32_t *src, *dst;
{ {
#ifdef __i386__
*dst = *src;
#else
volatile u_int16_t *a = (volatile u_int16_t *)src; volatile u_int16_t *a = (volatile u_int16_t *)src;
volatile u_int16_t *b = (volatile u_int16_t *)dst; volatile u_int16_t *b = (volatile u_int16_t *)dst;
b[0] = a[0]; b[0] = a[0];
b[1] = a[1]; b[1] = a[1];
#endif
} }
/* /*
@ -1158,7 +1162,7 @@ fxp_intr(arg)
*/ */
if (fxp_add_rfabuf(sc, m) == 0) { if (fxp_add_rfabuf(sc, m) == 0) {
struct ether_header *eh; struct ether_header *eh;
u_int16_t total_len; int total_len;
total_len = rfa->actual_size & total_len = rfa->actual_size &
(MCLBYTES - 1); (MCLBYTES - 1);
@ -1769,7 +1773,7 @@ fxp_add_rfabuf(sc, oldm)
sc->rfa_tailm->m_next = m; sc->rfa_tailm->m_next = m;
v = vtophys(rfa); v = vtophys(rfa);
fxp_lwcopy(&v, (volatile u_int32_t *) p_rfa->link_addr); fxp_lwcopy(&v, (volatile u_int32_t *) p_rfa->link_addr);
p_rfa->rfa_control &= ~FXP_RFA_CONTROL_EL; p_rfa->rfa_control = 0;
} else { } else {
sc->rfa_headm = m; sc->rfa_headm = m;
} }

8
sys/pci/if_fxp.c
View File

@ -125,11 +125,15 @@ static __inline void
fxp_lwcopy(src, dst) fxp_lwcopy(src, dst)
volatile u_int32_t *src, *dst; volatile u_int32_t *src, *dst;
{ {
#ifdef __i386__
*dst = *src;
#else
volatile u_int16_t *a = (volatile u_int16_t *)src; volatile u_int16_t *a = (volatile u_int16_t *)src;
volatile u_int16_t *b = (volatile u_int16_t *)dst; volatile u_int16_t *b = (volatile u_int16_t *)dst;
b[0] = a[0]; b[0] = a[0];
b[1] = a[1]; b[1] = a[1];
#endif
} }
/* /*
@ -1158,7 +1162,7 @@ fxp_intr(arg)
*/ */
if (fxp_add_rfabuf(sc, m) == 0) { if (fxp_add_rfabuf(sc, m) == 0) {
struct ether_header *eh; struct ether_header *eh;
u_int16_t total_len; int total_len;
total_len = rfa->actual_size & total_len = rfa->actual_size &
(MCLBYTES - 1); (MCLBYTES - 1);
@ -1769,7 +1773,7 @@ fxp_add_rfabuf(sc, oldm)
sc->rfa_tailm->m_next = m; sc->rfa_tailm->m_next = m;
v = vtophys(rfa); v = vtophys(rfa);
fxp_lwcopy(&v, (volatile u_int32_t *) p_rfa->link_addr); fxp_lwcopy(&v, (volatile u_int32_t *) p_rfa->link_addr);
p_rfa->rfa_control &= ~FXP_RFA_CONTROL_EL; p_rfa->rfa_control = 0;
} else { } else {
sc->rfa_headm = m; sc->rfa_headm = m;
} }