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Xing Lin
qemu
Commits
202a456a
Commit
202a456a
authored
Apr 16, 2004
by
bellard
Browse files
safer sb16 code
git-svn-id:
svn://svn.savannah.nongnu.org/qemu/trunk@728
c046a42c-6fe2-441c-8c8c-71466251a162
parent
3294b949
Changes
1
Hide whitespace changes
Inline
Side-by-side
hw/sb16.c
View file @
202a456a
...
...
@@ -26,7 +26,6 @@
#define MIN(a, b) ((a)>(b)?(b):(a))
#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0])))
#define DEREF(x) (void)x
#define log(...) fprintf (stderr, "sb16: " __VA_ARGS__)
/* #define DEBUG_SB16 */
...
...
@@ -83,7 +82,7 @@ typedef struct SB16State {
/* mixer state */
int
mixer_nreg
;
uint8_t
mixer_regs
[
0x83
];
uint8_t
mixer_regs
[
256
];
}
SB16State
;
/* XXX: suppress that and use a context */
...
...
@@ -192,6 +191,12 @@ static void dma_cmd (uint8_t cmd, uint8_t d0, int dma_len)
dsp
.
speaker
=
1
;
}
static
inline
void
dsp_out_data
(
SB16State
*
dsp
,
int
val
)
{
if
(
dsp
->
out_data_len
<
sizeof
(
dsp
->
out_data
))
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
val
;
}
static
void
command
(
SB16State
*
dsp
,
uint8_t
cmd
)
{
linfo
(
"%#x
\n
"
,
cmd
);
...
...
@@ -228,7 +233,7 @@ static void command (SB16State *dsp, uint8_t cmd)
break
;
case
0x20
:
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
0xff
;
dsp
_
out_data
(
dsp
,
0xff
)
;
break
;
case
0x35
:
...
...
@@ -315,12 +320,12 @@ static void command (SB16State *dsp, uint8_t cmd)
break
;
case
0xe1
:
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
sb
.
ver_lo
;
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
sb
.
ver_hi
;
dsp
_
out_data
(
dsp
,
sb
.
ver_lo
)
;
dsp
_
out_data
(
dsp
,
sb
.
ver_hi
)
;
return
;
case
0xf2
:
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
0xaa
;
dsp
_
out_data
(
dsp
,
0xaa
)
;
dsp
->
mixer_regs
[
0x82
]
|=
dsp
->
mixer_regs
[
0x80
];
pic_set_irq
(
sb
.
irq
,
1
);
return
;
...
...
@@ -398,9 +403,9 @@ static void complete (SB16State *dsp)
break
;
case
0xe0
:
dsp
->
out_data_len
=
1
;
dsp
->
out_data_len
=
0
;
linfo
(
"data = %#x
\n
"
,
dsp
->
in_data
[
0
]);
dsp
->
out_data
[
0
]
=
dsp
->
in_data
[
0
]
^
0xff
;
dsp
_
out_data
(
dsp
,
dsp
->
in_data
[
0
]
^
0xff
)
;
break
;
default:
...
...
@@ -426,7 +431,7 @@ static IO_WRITE_PROTO (dsp_write)
dsp
->
v2x6
=
0
;
else
if
((
1
==
val
)
&&
(
0
==
dsp
->
v2x6
))
{
dsp
->
v2x6
=
1
;
dsp
->
out_data
[
dsp
->
out_data_len
++
]
=
0xaa
;
dsp
_
out_data
(
dsp
,
0xaa
)
;
}
else
dsp
->
v2x6
=
~
0
;
...
...
@@ -519,12 +524,15 @@ static IO_READ_PROTO (dsp_read)
static
IO_WRITE_PROTO
(
mixer_write_indexb
)
{
SB16State
*
dsp
=
opaque
;
dsp
->
mixer_nreg
=
val
&
0xff
;
dsp
->
mixer_nreg
=
val
;
}
static
IO_WRITE_PROTO
(
mixer_write_datab
)
{
SB16State
*
dsp
=
opaque
;
if
(
dsp
->
mixer_nreg
>
0x83
)
return
;
dsp
->
mixer_regs
[
dsp
->
mixer_nreg
]
=
val
;
}
...
...
@@ -666,6 +674,7 @@ static int magic_of_irq (int irq)
}
}
#if 0
static int irq_of_magic (int magic)
{
switch (magic) {
...
...
@@ -682,6 +691,7 @@ static int irq_of_magic (int magic)
return 2;
}
}
#endif
void
SB16_init
(
void
)
{
...
...
@@ -690,12 +700,12 @@ void SB16_init (void)
static
const
uint8_t
dsp_write_ports
[]
=
{
0x6
,
0xc
};
static
const
uint8_t
dsp_read_ports
[]
=
{
0x6
,
0xa
,
0xc
,
0xd
,
0xe
,
0xf
};
memset
(
s
->
mixer_regs
,
0xff
,
sizeof
(
s
->
mixer_regs
));
s
->
mixer_regs
[
0x0e
]
=
~
0
;
s
->
mixer_regs
[
0x80
]
=
magic_of_irq
(
sb
.
irq
);
s
->
mixer_regs
[
0x81
]
=
0x20
|
(
sb
.
dma
<<
1
);
DEREF
(
irq_of_magic
);
for
(
i
=
0x30
;
i
<
0x48
;
i
++
)
{
s
->
mixer_regs
[
i
]
=
0x20
;
}
...
...
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