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Implement {read,write}_region_1, and sprinkle some __volatile 

around for sanity.
This commit is contained in:
thorpej 2001-02-01 01:01:50 +00:00
parent c87a3782c4
commit e2c0abd45d
1 changed files with 45 additions and 7 deletions
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52
sys/arch/dreamcast/dev/g2/g2bus_bus_mem.c
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@ -1,4 +1,4 @@
/* $NetBSD: g2bus_bus_mem.c,v 1.2 2001/01/31 21:58:37 marcus Exp $ */
/* $NetBSD: g2bus_bus_mem.c,v 1.3 2001/02/01 01:01:50 thorpej Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -72,6 +72,12 @@ void g2bus_bus_mem_write_2(void *, bus_space_handle_t, bus_size_t,
void g2bus_bus_mem_write_4(void *, bus_space_handle_t, bus_size_t,
u_int32_t);
void g2bus_bus_mem_read_region_1(void *, bus_space_handle_t, bus_size_t,
u_int8_t *, bus_size_t);
void g2bus_bus_mem_write_region_1(void *, bus_space_handle_t, bus_size_t,
const u_int8_t *, bus_size_t);
void
g2bus_bus_mem_init(struct g2bus_softc *sc)
{
@ -89,6 +95,10 @@ g2bus_bus_mem_init(struct g2bus_softc *sc)
t->dbs_w_1 = g2bus_bus_mem_write_1;
t->dbs_w_2 = g2bus_bus_mem_write_2;
t->dbs_w_4 = g2bus_bus_mem_write_4;
t->dbs_rr_1 = g2bus_bus_mem_read_region_1;
t->dbs_wr_1 = g2bus_bus_mem_write_region_1;
}
int
@ -136,7 +146,7 @@ g2bus_bus_mem_read_1(void *v, bus_space_handle_t sh, bus_size_t off)
G2_LOCK;
rv = *(u_int8_t *)(sh + off);
rv = *(__volatile u_int8_t *)(sh + off);
G2_UNLOCK;
@ -150,7 +160,7 @@ g2bus_bus_mem_read_2(void *v, bus_space_handle_t sh, bus_size_t off)
G2_LOCK;
rv = *(u_int16_t *)(sh + off);
rv = *(__volatile u_int16_t *)(sh + off);
G2_UNLOCK;
@ -164,7 +174,7 @@ g2bus_bus_mem_read_4(void *v, bus_space_handle_t sh, bus_size_t off)
G2_LOCK;
rv = *(u_int32_t *)(sh + off);
rv = *(__volatile u_int32_t *)(sh + off);
G2_UNLOCK;
@ -178,7 +188,7 @@ g2bus_bus_mem_write_1(void *v, bus_space_handle_t sh, bus_size_t off,
G2_LOCK;
*(u_int8_t *)(sh + off) = val;
*(__volatile u_int8_t *)(sh + off) = val;
G2_UNLOCK;
}
@ -190,7 +200,7 @@ g2bus_bus_mem_write_2(void *v, bus_space_handle_t sh, bus_size_t off,
G2_LOCK;
*(u_int16_t *)(sh + off) = val;
*(__volatile u_int16_t *)(sh + off) = val;
G2_UNLOCK;
}
@ -202,7 +212,35 @@ g2bus_bus_mem_write_4(void *v, bus_space_handle_t sh, bus_size_t off,
G2_LOCK;
*(u_int32_t *)(sh + off) = val;
*(__volatile u_int32_t *)(sh + off) = val;
G2_UNLOCK;
}
void
g2bus_bus_mem_read_region_1(void *v, bus_space_handle_t sh, bus_size_t off,
u_int8_t *addr, bus_size_t len)
{
__volatile const u_int8_t *baddr = (u_int8_t *)(sh + off);
G2_LOCK;
while (len--)
*addr++ = *baddr++;
G2_UNLOCK;
}
void
g2bus_bus_mem_write_region_1(void *v, bus_space_handle_t sh, bus_size_t off,
const u_int8_t *addr, bus_size_t len)
{
__volatile u_int8_t *baddr = (u_int8_t *)(sh + off);
G2_LOCK;
while (len--)
*baddr++ = *addr++;
G2_UNLOCK;
}