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awi: rewrite to be higher performance.

This commit is contained in:
sommerfeld 2000-02-17 17:37:23 +00:00
parent 823d2a5d81
commit 50c84950f2
1 changed files with 74 additions and 53 deletions
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125
sys/dev/ic/am79c930.c
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@ -1,4 +1,4 @@
/* $NetBSD: am79c930.c,v 1.2 1999/11/05 05:13:36 sommerfeld Exp $ */
/* $NetBSD: am79c930.c,v 1.3 2000/02/17 17:37:23 sommerfeld Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -123,7 +123,6 @@ static void io_write_1 (sc, off, val)
u_int32_t off;
u_int8_t val;
{
/* XXX bank-switching? */
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
@ -139,8 +138,16 @@ static void io_write_2 (sc, off, val)
u_int32_t off;
u_int16_t val;
{
io_write_1(sc, off, val & 0xff);
io_write_1(sc, off+1, (val >> 8) & 0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, val & 0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, (val>>8)&0xff);
AM930_DELAY(1);
}
static void io_write_4 (sc, off, val)
@ -148,11 +155,20 @@ static void io_write_4 (sc, off, val)
u_int32_t off;
u_int32_t val;
{
/* XXX higher offset values needed for bank-switching! */
io_write_1(sc, off, val & 0xff);
io_write_1(sc, off+1, (val >> 8) & 0xff);
io_write_1(sc, off+2, (val >> 16) & 0xff);
io_write_1(sc, off+3, (val >> 24) & 0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,val & 0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>8)&0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>16)&0xff);
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>24)&0xff);
AM930_DELAY(1);
}
static void io_write_bytes (sc, off, ptr, len)
@ -162,10 +178,15 @@ static void io_write_bytes (sc, off, ptr, len)
size_t len;
{
int i;
/* XXX higher offset values needed for bank-switching! */
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
for (i=0; i<len; i++)
io_write_1 (sc, off+i, ptr[i]);
bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,ptr[i]);
}
static u_int8_t io_read_1 (sc, off)
@ -188,19 +209,40 @@ static u_int16_t io_read_2 (sc, off)
struct am79c930_softc *sc;
u_int32_t off;
{
return io_read_1 (sc, off) |
(io_read_1 (sc, off+1) << 8);
u_int16_t val;
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
AM930_DELAY(1);
val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
AM930_DELAY(1);
return val;
}
static u_int32_t io_read_4 (sc, off)
struct am79c930_softc *sc;
u_int32_t off;
{
/* XXX bank-switching? */
return io_read_1 (sc, off) |
(io_read_1 (sc, off+1) << 8) |
(io_read_1 (sc, off+2) << 16) |
(io_read_1 (sc, off+3) << 24);
u_int32_t val;
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
AM930_DELAY(1);
val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
AM930_DELAY(1);
val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 16;
AM930_DELAY(1);
val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 24;
AM930_DELAY(1);
return val;
}
static void io_read_bytes (sc, off, ptr, len)
@ -211,18 +253,21 @@ static void io_read_bytes (sc, off, ptr, len)
{
int i;
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
((off>>8)& 0x7f));
AM930_DELAY(1);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
AM930_DELAY(1);
for (i=0; i<len; i++)
ptr[i] = io_read_1(sc, off+i);
ptr[i] = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
AM79C930_IODPA);
}
static void mem_write_1 (sc, off, val)
struct am79c930_softc *sc;
u_int32_t off;
u_int8_t val;
{
/* XXX higher offset values needed for bank-switching! */
bus_space_write_1(sc->sc_memt, sc->sc_memh, off, val);
}
@ -231,9 +276,7 @@ static void mem_write_2 (sc, off, val)
u_int32_t off;
u_int16_t val;
{
/* XXX higher offset values needed for bank-switching! */
bus_space_write_1(sc->sc_memt, sc->sc_memh, off, val & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_memh, off+1, (val >> 8) & 0xff);
bus_space_write_2(sc->sc_memt, sc->sc_memh, off, val);
}
static void mem_write_4 (sc, off, val)
@ -241,11 +284,7 @@ static void mem_write_4 (sc, off, val)
u_int32_t off;
u_int32_t val;
{
/* XXX higher offset values needed for bank-switching! */
bus_space_write_1(sc->sc_memt, sc->sc_memh, off, val & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_memh, off+1, (val >> 8) & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_memh, off+2, (val >> 16) & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_memh, off+3, (val >> 24) & 0xff);
bus_space_write_4(sc->sc_memt, sc->sc_memh, off, val);
}
static void mem_write_bytes (sc, off, ptr, len)
@ -254,11 +293,7 @@ static void mem_write_bytes (sc, off, ptr, len)
u_int8_t *ptr;
size_t len;
{
int i;
/* XXX higher offset values needed for bank-switching! */
for (i=0; i<len; i++)
bus_space_write_1 (sc->sc_memt, sc->sc_memh, off+i, ptr[i]);
bus_space_write_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
}
@ -266,7 +301,6 @@ static u_int8_t mem_read_1 (sc, off)
struct am79c930_softc *sc;
u_int32_t off;
{
/* XXX higher offset values needed for bank-switching! */
return bus_space_read_1(sc->sc_memt, sc->sc_memh, off);
}
@ -274,22 +308,14 @@ static u_int16_t mem_read_2 (sc, off)
struct am79c930_softc *sc;
u_int32_t off;
{
/* XXX higher offset values needed for bank-switching! */
return
bus_space_read_1(sc->sc_memt, sc->sc_memh, off) |
(bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) <<8);
return bus_space_read_2(sc->sc_memt, sc->sc_memh, off);
}
static u_int32_t mem_read_4 (sc, off)
struct am79c930_softc *sc;
u_int32_t off;
{
/* XXX higher offset values needed for bank-switching! */
return
bus_space_read_1(sc->sc_memt, sc->sc_memh, off) |
(bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) <<8)|
(bus_space_read_1(sc->sc_memt, sc->sc_memh, off+2) <<16) |
(bus_space_read_1(sc->sc_memt, sc->sc_memh, off+3) <<24);
return bus_space_read_4(sc->sc_memt, sc->sc_memh, off);
}
@ -300,12 +326,7 @@ static void mem_read_bytes (sc, off, ptr, len)
u_int8_t *ptr;
size_t len;
{
int i;
/* XXX higher offset values needed for bank-switching! */
for (i=0; i<len; i++)
ptr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, off+i);
bus_space_read_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
}