This basically restores the spirit of r203535, which was partially reverted
in r205557, while we still map fixed amount to work around transient issues
we experienced with r203535.
Prodded by: avg
Tested by: avg
MFC after: 1 week
The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
when the original offset is bigger than size of one page. X86BIOS macros
cannot be used here because it is assumed address is only linear in a page.
Tested by: netchild
not change interrupt vector if it is not pointing the ROM itself. Actually,
we just fail shadowing altogether if that is the case because the shadowed
copy will be useless for sure and POST may not be relocatable or useful.
While I'm here, fix a debugging message under bootverbose, really. r211829
fixed one case but broke another. Mea Culpa.
supported by many BIOSes to improve performance of VESA BIOS calls for real
mode OSes but it is not our intention here. However, this may help some
platforms where the video ROMs are inaccessible after suspend, for example.
Note it may consume up to 64K bytes of contiguous memory depending on video
controller model when it is enabled. This feature can be disabled by
setting zero to 'debug.vesa.shadow_rom' loader tunable via loader(8) or
loader.conf(5). The default is 1 (enabled), for now.
free(9) and it can cause kernel panic when there are multiple graphics
controllers in the system.
Tested by: Brandon Gooch (jamesbrandongooch at gmail dot com)
MFC after: 3 days
First, we compare mode table data against minimum value. If the mode table
does not make sense, we set the minimum in the mode info. When we actually
set the mode, we try VESA BIOS function and compare it against the previous
value. If it makes more sense, update the information.
- Add a separate palette data for 8-bit DAC mode when SC_PIXEL_MODE is set
and fill it up with default gray-scale palette data for text. Now we don't
have to set `hint.sc.0.vesa_mode' to get the default palette data.
- Add a new adapter flag, V_ADP_DAC8 to track whether the controller is
using 8-bit palette format and load correct palette when switching modes.
- Set 8-bit DAC mode only for non-VGA compatible graphics mode.
format is higher than 6-bit instead of relying VGA compatibility flag.
This fixes palette problem of NVIDIA GeForce 6600. Reduce code differences
between palette load/save functions while we are here.
Tested by: danfe
This replaces d_mmap() with the d_mmap2() implementation and also
changes the type of offset to vm_ooffset_t.
Purge d_mmap2().
All driver modules will need to be rebuilt since D_VERSION is also
bumped.
Reviewed by: jhb@
MFC after: Not in this lifetime...
- VBE 3.0 says palette format resets to 6-bit mode when video mode changes.
We simply set 8-bit mode when we switch modes if the adapter supports it.
- VBE 3.0 also says if the mode is not VGA compatible, we must use VBE
function to save/restore palette. Otherwise, VGA function may be used.
Thus, reinstate the save/load palette functions only for non-VGA compatible
modes regardless of its palette format.
- Let vesa(4) set VESA modes even if vga(4) claims to support it.
- Reset default palette if VESA pixel mode is set initially.
- Fix more style nits.
