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Q800 pull request 20231106

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macfb: A/UX fixes for colour LUT
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Merge tag 'q800-for-8.2-pull-request' of https://github.com/vivier/qemu-m68k into staging

Q800 pull request 20231106

macfb: A/UX fixes for colour LUT

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# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'q800-for-8.2-pull-request' of https://github.com/vivier/qemu-m68k:
  macfb: allow reads from the DAFB_LUT register
  macfb: allow larger write accesses to the DAFB_LUT register
  macfb: rename DAFB_RESET to DAFB_LUT_INDEX
  macfb: don't clear interrupts when writing to DAFB_RESET

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-11-07 09:41:10 +08:00
commit b8cdbe0e4c
1 changed files with 11 additions and 8 deletions
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19
hw/display/macfb.c
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@ -36,8 +36,8 @@
#define DAFB_INTR_MASK 0x104
#define DAFB_INTR_STAT 0x108
#define DAFB_INTR_CLEAR 0x10c
#define DAFB_RESET 0x200
#define DAFB_LUT 0x213
#define DAFB_LUT_INDEX 0x200
#define DAFB_LUT 0x210
#define DAFB_INTR_VBL 0x4
@ -537,6 +537,11 @@ static uint64_t macfb_ctrl_read(void *opaque,
case DAFB_MODE_SENSE:
val = macfb_sense_read(s);
break;
case DAFB_LUT ... DAFB_LUT + 3:
val = s->color_palette[s->palette_current];
s->palette_current = (s->palette_current + 1) %
ARRAY_SIZE(s->color_palette);
break;
default:
if (addr < MACFB_CTRL_TOPADDR) {
val = s->regs[addr >> 2];
@ -583,13 +588,11 @@ static void macfb_ctrl_write(void *opaque,
s->regs[DAFB_INTR_STAT >> 2] &= ~DAFB_INTR_VBL;
macfb_update_irq(s);
break;
case DAFB_RESET:
s->palette_current = 0;
s->regs[DAFB_INTR_STAT >> 2] &= ~DAFB_INTR_VBL;
macfb_update_irq(s);
case DAFB_LUT_INDEX:
s->palette_current = (val & 0xff) * 3;
break;
case DAFB_LUT:
s->color_palette[s->palette_current] = val;
case DAFB_LUT ... DAFB_LUT + 3:
s->color_palette[s->palette_current] = val & 0xff;
s->palette_current = (s->palette_current + 1) %
ARRAY_SIZE(s->color_palette);
if (s->palette_current % 3) {