Commit Graph

11 Commits

Author SHA1 Message Date
Pedro F. Giffuni
7282444b10 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:36:21 +00:00
Jung-uk Kim
1ce5efd4b6 Attach dpms(4) to vgapm and make sure to restore DPMS state after
VGA is resumed properly.

Reviewed by:	jhb
2009-12-15 19:58:23 +00:00
Jung-uk Kim
2f28bf307c - Remove a redundant check for dpms(4).
- Test a cheaper function first.
2009-11-12 18:16:35 +00:00
Jung-uk Kim
494d4d251b Remove a redundant option ROM check, which was never meant to be committed. 2009-10-19 23:09:39 +00:00
Jung-uk Kim
3219f535d9 Rewrite x86bios and update its dependent drivers.
- Do not map entire real mode memory (1MB).  Instead, we map IVT/BDA and
ROM area separately.  Most notably, ROM area is mapped as device memory
(uncacheable) as it should be.  User memory is dynamically allocated and
free'ed with contigmalloc(9) and contigfree(9).  Remove now redundant and
potentially dangerous x86bios_alloc.c.  If this emulator ever grows to
support non-PC hardware, we may implement it with rman(9) later.
- Move all host-specific initializations from x86emu_util.c to x86bios.c and
remove now unnecessary x86emu_util.c.  Currently, non-PC hardware is not
supported.  We may use bus_space(9) later when the KPI is fixed.
- Replace all bzero() calls for emulated registers with more obviously named
x86bios_init_regs().  This function also initializes DS and SS properly.
- Add x86bios_get_intr().  This function checks if the interrupt vector is
available for the platform.  It is not necessary for PC-compatible hardware
but it may be needed later. ;-)
- Do not try turning off monitor if DPMS does not support the state.
- Allocate stable memory for VESA OEM strings instead of just holding
pointers to them.  They may or may not be accessible always.  Fix a memory
leak of video mode table while I am here.
- Add (experimental) BIOS POST call for vesa(4).  This function calls VGA
BIOS POST code from the current VGA option ROM.  Some video controllers
cannot save and restore the state properly even if it is claimed to be
supported.  Usually the symptom is blank display after resuming from suspend
state.  If the video mode does not match the previous mode after restoring,
we try BIOS POST and force the known good initial state.  Some magic was
taken from NetBSD (and it was taken from vbetool, I believe.)
- Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4)
to identify who owns the VESA BIOS.  This is very useful for multi-display
adapter setup.  By default, the POST video controller is automatically
probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding
vgapci unit number.  You may override it from loader but it is very unlikely
to be necessary.  Unfortunately only AGP/PCI/PCI-E controllers can be
matched because ISA controller does not have necessary device IDs.
- Fix a long standing bug in state save/restore function.  The state buffer
pointer should be ES:BX, not ES:DI according to VBE 3.0.  If it ever worked,
that's because BX was always zero. :-)
- Clean up register initializations more clearer per VBE 3.0.
- Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
Jung-uk Kim
55990ad0c3 Initialize registers to zero before calling the interrupt handlers inside
emulator as we did in r197424 for vesa.

Submitted by:	paradox (ddkprog yahoo com)
2009-09-24 20:23:24 +00:00
Jung-uk Kim
a867274808 - Use FreeBSD function naming convention.
- Change x86biosCall() to more appropriate x86bios_intr().[1]

Discussed with:	delphij, paradox (ddkprog yahoo com)
Submitted by:	paradox (ddkprog yahoo com)[1]
2009-09-24 19:24:42 +00:00
Jung-uk Kim
19de5df5e5 Move sys/dev/x86bios to sys/compat/x86bios.
It may not be optimal but it is clearly better than the old place.

OK'ed by:	delphij, paradox (ddkprog yahoo com)
2009-09-23 20:49:14 +00:00
Xin LI
205d67b00d Collapase interrupt supporting functions to a new module, and switch from
x86emu to this new module.

This changeset also brings a fix for bugs introduced with the initial
x86emu commit, which prevents the user from using some display mode or
cause instant reboots during mode switch.

Submitted by:	paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Xin LI
ee5e90dab2 - Teach vesa(4) and dpms(4) about x86emu. [1]
- Add vesa kernel options for amd64.
 - Connect libvgl library and splash kernel modules to amd64 build.
 - Connect manual page dpms(4) to amd64 build.
 - Remove old vesa/dpms files.

Submitted by:	paradox <ddkprog yahoo com> [1], swell k at gmail.com
		(with some minor tweaks)
2009-09-09 09:50:31 +00:00
Xin LI
f45c063aa7 Copy the following files to new places, a subsequent commit would remove
them from the old place.  This commit necessary so that the tree would not
enter a broken state.

	sys/i386/isa/vesa.c -> dev/fb/vesa.c
	sys/i386/include/pc/vesa.h -> dev/fb/vesa.h
	sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00