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37e7b86766
qemu/hw/display
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Paolo Bonzini 37e7b86766 vga: fix incorrect line height in 640x200x2 mode 
When in CGA modes, QEMU wants to ignore the maximum scan field (bits 0..4) of
the maximum scan length register in the CRTC.  It is not clear why this is
needed---for example, Bochs ignores bit 7 instead.  The issue is that the
CGA modes are not detected correctly, and in particular mode 6 results in
multi_scan==3 according to how SeaBIOS programs it.  The right way to check
for CGA graphics modes is to check whether bit 13 of the address is special
cased by the CRT controller to achieve line interleaving, i.e. whether bit 0
of the CRTC mode control register is clear.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1020
Reported-by: Korneliusz Osmenda <korneliuszo@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-07-28 15:36:17 +02:00
..
artist.c artist: set memory region owners for buffers to the artist device 2022-06-26 18:40:28 +01:00
ati_2d.c ati: check x y display parameter values 2020-11-04 08:25:17 +01:00
ati_dbg.c ati-vga: Add dummy MEM_SDRAM_MODE_REG 2020-06-30 22:54:24 +02:00
ati_int.h Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ati_regs.h ati-vga: Add dummy MEM_SDRAM_MODE_REG 2020-06-30 22:54:24 +02:00
ati.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
bcm2835_fb.c hw/display/bcm2835_fb: Fix framebuffer allocation address 2022-07-26 14:09:44 +01:00
blizzard.c display/blizzard: use extract16() for fix clang analyzer warning in blizzard_draw_line16_32() 2020-05-04 11:17:27 +02:00
bochs-display.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
cg3.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
cirrus_vga_internal.h hw/display/cirrus_vga: Move "isa-cirrus-vga" device into a separate file 2018-10-15 09:57:33 +02:00
cirrus_vga_isa.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
cirrus_vga_rop2.h cirrus: fix PUTPIXEL macro 2017-03-27 12:14:45 +02:00
cirrus_vga_rop.h
cirrus_vga.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
dpcd.c hw/display/dpcd: Convert debug printf()s to trace events 2020-05-28 11:38:57 +02:00
edid-generate.c edid: Fix clock of Detailed Timing Descriptor 2022-03-04 11:31:46 +01:00
edid-region.c Include exec/memory.h slightly less 2019-08-16 13:31:52 +02:00
exynos4210_fimd.c hw/display/exynos4210_fimd: Fix potential NULL pointer dereference 2020-11-02 16:52:17 +00:00
framebuffer.c Include hw/hw.h exactly where needed 2019-08-16 13:31:52 +02:00
framebuffer.h
g364fb.c g364fb: add VMStateDescription for G364SysBusState 2021-07-02 17:35:08 +02:00
i2c-ddc.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
jazz_led.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
Kconfig hw/display: Rename VGA_ISA_MM -> VGA_MMIO 2022-01-13 10:58:54 +01:00
macfb.c macfb: set initial value of mode control registers in macfb_common_realize() 2022-03-09 09:29:10 +00:00
meson.build hw/display: Rename VGA_ISA_MM -> VGA_MMIO 2022-01-13 10:58:54 +01:00
next-fb.c Do not include hw/boards.h if it's not really necessary 2021-05-02 17:24:51 +02:00
omap_dss.c exec/exec-all: Move 'qemu/log.h' include in units requiring it 2022-02-21 10:18:06 +01:00
omap_lcdc.c hw/display/omap_lcdc: Delete unnecessary macro 2021-03-06 13:30:38 +00:00
pl110_template.h Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
pl110.c hw/display/pl110: Remove use of BITS from pl110_template.h 2021-03-14 13:14:55 +00:00
pxa2xx_lcd.c Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
qxl-logger.c hw/display/qxl: Fix bad printf format specifiers 2021-02-04 14:32:40 +01:00
qxl-render.c ui/cursor: fix integer overflow in cursor_alloc (CVE-2021-4206) 2022-04-07 12:30:54 +02:00
qxl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
qxl.h Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
ramfb-standalone.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
ramfb.c ramfb: fix size calculation 2020-05-18 15:43:51 +02:00
sii9022.c hw/i2c: add asynchronous send 2022-06-30 09:21:14 +02:00
sm501.c hw/i2c: Rename i2c_set_slave_address() -> i2c_slave_set_address() 2021-07-08 14:15:01 -05:00
ssd0303.c hw/i2c: add asynchronous send 2022-06-30 09:21:14 +02:00
ssd0323.c hw/ssi: Rename SSI 'slave' as 'peripheral' 2020-12-10 12:15:03 -05:00
tc6393xb.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
tcx.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
trace-events hw/display/vmware_vga: do not discard screen updates 2022-04-22 11:47:08 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vga_int.h hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
vga_regs.h Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
vga-access.h vga: move access helpers to separate include file 2019-09-19 10:37:46 +02:00
vga-helpers.h vga: move access helpers to separate include file 2019-09-19 10:37:46 +02:00
vga-isa.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
vga-mmio.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
vga-pci.c hw/display: Allow vga_common_init() to return errors 2022-03-18 10:15:57 +01:00
vga.c vga: fix incorrect line height in 640x200x2 mode 2022-07-28 15:36:17 +02:00
vhost-user-gpu-pci.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
vhost-user-gpu.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
vhost-user-vga.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-gpu-base.c virtio-gpu: Respect UI refresh rate for EDID 2022-06-14 10:34:37 +02:00
virtio-gpu-gl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-gpu-pci-gl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-gpu-pci.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-gpu-udmabuf-stubs.c virtio-gpu: splitting one extended mode guest fb into n-scanouts 2021-11-05 12:29:19 +01:00
virtio-gpu-udmabuf.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
virtio-gpu-virgl.c virtio-gpu: use VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP 2021-12-21 10:50:21 +04:00
virtio-gpu.c virtio-gpu: Respect UI refresh rate for EDID 2022-06-14 10:34:37 +02:00
virtio-vga-gl.c modules: introduces module_kconfig directive 2022-06-06 09:26:53 +02:00
virtio-vga.c ui/console: Do not return a value with ui_info 2022-06-14 10:34:37 +02:00
virtio-vga.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
vmware_vga.c hw/display/vmware_vga: do not discard screen updates 2022-04-22 11:47:08 +02:00
xenfb.c ui: Deliver refresh rate via QemuUIInfo 2022-06-14 10:34:37 +02:00
xlnx_dp.c xlnx_dp: Fix the interrupt disable logic 2022-06-08 19:38:47 +01:00