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sm501: Log unimplemented raster operation modes

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The sm501 currently implements only a very limited set of raster operation
modes. After this change, unknown raster operation modes are logged so
these can be easily spotted.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Sebastian Bauer 2018-07-04 11:40:58 +02:00 committed by David Gibson
parent debc7e7dad
commit 06cb926aaa
1 changed files with 23 additions and 0 deletions
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23
hw/display/sm501.c
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@ -706,6 +706,8 @@ static void sm501_2d_operation(SM501State *s)
int format_flags = (s->twoD_stretch >> 20) & 0x3;
int addressing = (s->twoD_stretch >> 16) & 0xF;
int rop_mode = (s->twoD_control >> 15) & 0x1; /* 1 for rop2, else rop3 */
/* 1 if rop2 source is the pattern, otherwise the source is the bitmap */
int rop2_source_is_pattern = (s->twoD_control >> 14) & 0x1;
int rop = s->twoD_control & 0xFF;
/* get frame buffer info */
@ -719,6 +721,27 @@ static void sm501_2d_operation(SM501State *s)
abort();
}
if (rop_mode == 0) {
if (rop != 0xcc) {
/* Anything other than plain copies are not supported */
qemu_log_mask(LOG_UNIMP, "sm501: rop3 mode with rop %x is not "
"supported.\n", rop);
}
} else {
if (rop2_source_is_pattern && rop != 0x5) {
/* For pattern source, we support only inverse dest */
qemu_log_mask(LOG_UNIMP, "sm501: rop2 source being the pattern and "
"rop %x is not supported.\n", rop);
} else {
if (rop != 0x5 && rop != 0xc) {
/* Anything other than plain copies or inverse dest is not
* supported */
qemu_log_mask(LOG_UNIMP, "sm501: rop mode %x is not "
"supported.\n", rop);
}
}
}
if ((s->twoD_source_base & 0x08000000) ||
(s->twoD_destination_base & 0x08000000)) {
printf("%s: only local memory is supported.\n", __func__);