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ati-vga: Implement dummy VBlank IRQ

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The MacOS driver exits if the card does not have an interrupt. If we
set PCI_INTERRUPT_PIN to 1 then it enables VBlank interrupts and it
boots but the mouse pointer cannot be moved. This patch implements a
dummy VBlank interrupt triggered by a 60 Hz timer. With this the
pointer now moves but MacOS still hangs somewhere before completely
finishing boot.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <89364275f2fb5f85ee73c0e76528aa91691a499a.1565907489.git.balaton@eik.bme.hu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
BALATON Zoltan 2019-08-16 00:18:09 +02:00 • committed by Gerd Hoffmann
parent 8bb9a2b26d
commit b7105d280c
4 changed files with 55 additions and 0 deletions
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1
hw/display/ati_dbg.c
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@ -16,6 +16,7 @@ static struct ati_regdesc ati_reg_names[] = {
{"BUS_CNTL", 0x0030},
{"BUS_CNTL1", 0x0034},
{"GEN_INT_CNTL", 0x0040},
{"GEN_INT_STATUS", 0x0044},
{"CRTC_GEN_CNTL", 0x0050},
{"CRTC_EXT_CNTL", 0x0054},
{"DAC_CNTL", 0x0058},