a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
* Make S expand to an absolute path at compile time.
* Use `-S' rather than `-x' to remove debugging symbols.
* Garbage collect unused variables.
* Reverse a handful of port-specific changes that do not correspond to
the common build model and are not needed.
a boot string for firmware that can do this, such as the SPARC and
the sun3 models. It is currently silently ignored on all other
hardware now, however. The MD function "boot()" has been changed to
also take a char *.
- Use an extent map to manage the ISA memory "hole", much like
how i/o port space is manged with an extent map. Do the actual
accounting in bus_mem_{,un}map().
- When creating the ioport and iomem extent maps, pass the
EX_NOBLOB flag, which tells the extent map code to disallow
fragmenting of regions. This will make it easier to catch
simple i/o and memory mapping bugs (like the if_ed.c bug I just
fixed) in the future.
- In bus_mem_map(), a chunk of code was indented using spaces.
Make the indentation use tabs.
- In bus_io_unmap(), fix the format passed to printf().
- A fixed extent map (statically allocated descriptor storage) is
created in init386(), just before the call to consinit(). The
fixed descriptor storage has enough room for 8 region entires,
which is plenty for early initialization, but doesn't chew up
that much memory.
This extent map (ioport_ex) manages the i386 i/o port
space (0x0 - 0xffff).
- Just before the call to configure() in cpu_startup(), a
flag is set which notifies the bus_io functions that it is
safe to use malloc() to allocate descriptor storage, in the
event that more than 8 regions are needed.
- bus_io_map() attempts to allocate the specified region from
ioport_ex. If the allocation succeeds, the io handle is
filled in. If the allocation fails, it is implied that
something else is already using that io space, and an
error condition is returned.
- bus_io_unmap() frees a region previously allocated from
ioport_ex in bus_io_map(). If the free fails, a warning
is printed on the conole.
These changes implement "port accounting". This is required for
proper autoconfiguration on the i386 port, and makes dealing with,
among other things, PCMCIA io mappings _much_ easier.
kmem_map (the VA space is allocated from kernel_map).
In both bus_mem_map() and bus_mem_unmap(), adjust some arithmetic to
avoid wasting a page of VA space per call to bus_mem_map().
Changing types from unsigned {long,short} to u_int{32,16}_t causes problems
in a lot of userlevel code because those types aren't defined when machine/
endian.h is included. And IMO including sys/types.h in machine/endian.h
is clearly wrong.
XPG4.2 defines new types in_addr_t and in_port_t for the {h,n}to{n,h}{l,s}
functions. But we don't have time to figure out the implementation issues
given the current release schedule.
Don't mess with the flags when entering a software interrupt.
Use IF, not VIF.
NOTE: These changes break dosemu, but are required for proper emulation.
bus-independent core driver. Tested on all three bus types, including
an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in
your kernel config file to catch this one).
XXX Driver still needs to be converted to <machine/bus.h>
isa_intr_{,dis}establish()) here. Make this file safely includable by
<dev/isa/isavar.h> and by all of the places in the i386 that are currently
including it, which means multiple inclusion protection and a few
otherwise-extraneous 'forward' structure declarations. isa_intr_establish()
and isa_intr_disestablish() now take as their first argument a
machine-dependent cookie of type isa_chipset_tag_t, which is also defined
here.
in VM86 mode.
Allow changing of *all* PSL bits in VM86 mode; some applications don't work
right otherwise, and all the nasty bits are virtualized anyway.
Make sure PSL_VIF, PSL_VIP, and PSL_VM don't show up in the user's view of
the PSL.
the bus is configured, interrupts are handled, etc. define
eisa_chipset_tag_t and eisa_intr_handle_t types, and the following
functions:
eisa_attach_hook()
eisa_maxslots()
eisa_intr_map()
eisa_intr_string()
eisa_intr_establish()
eisa_intr_disestablish()
to do the right things for the i386.
temporarily revert bus config order back to isa->eisa->pci
until port allocation/accounting is ready (XXX).
works around problem of the if_ep driver's probe function trashing
an adaptec 2940 if the BIOS maps it in at port 0xf000. (the
BIOS on my new P166 does this, ... the BIOS on my P133's does not).
without this the P166 system will reset as soon as spl0() is called
(autoconf.c) making it impossible to install the OS.
(soon to be documented on mailing lists; eventually in section 9 manual
pages), most importantly:
(1) support interrupt pin swizzling on non-i386 systems with
PCI-PCI bridges (per PPB spec; done, but meaningless, on i386).
(2) provide pci_{io,mem}_find(), to determine what I/O or memory
space is described by a given PCI configuration space
mapping register.
(3) provide pci_intr_map(), pci_intr_string(), and
pci_intr_{,dis}establish() to manipulate and print info about
PCI interrupts.
(4) deprecate the pci_map_* functions, and provide them only
as compatibility interfaces (in pci_compat.c) which will
eventually go away, implemented as wrappers around
the functions described above.
(5) make pci functions take as an argument a machine-dependent
cookie, to allow more flexibility in implementation.
- split softc size and match/attach out from cfdriver into
a new struct cfattach.
- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
which represents the "keyboard controller". Give "pc" and "vt" drivers
the "pckbd" attribute. In pcattach() (pccons and pcvt), attach children
of the keyboard controller.
prototype in sys/systm.h (which was just put in in by christos)
with revision 1.43 of sys/systm.h
revision 1.43
date: 1996/03/14 18:59:12; author: christos; state: Exp; lines: +1 -3
systm.h: Bring Debugger() prototype into scope.
hook (pci_md_attach_hook()) to do any machine-dependent attachment
gunk, e.g. on the i386 printing out the configuration mode (if bus 0)
(2) don't pass max device number for a given bus in, use
PCI_MAX_DEVICE_NUMBER, which can be defined on a per-machine basis.
(defaults to 32. on i386, it's 32 if pci conf mode == 1, 16 if 2.)
multiport cards no longer need 'flags 1', because the "don't set IEN"
requirement is communicated by the commulti_attach_args. com.c no longer
recognizes 'flags 1' at all.
partition, add the MBR partitions to the default (faked-up)
disklabel used by NetBSD if it can't find a real one. If the
type of the MBR partition is one of the common DOS ones, mark the
partition as having an MSDOS filesystem.
'logically right' thing: define a mainbus_attach_args union which is
all of the subdevices' bus attach args, together with the part that's
shared by all of them, a const char * (the bus name).
machine-independent code for more sane access to bus resources.
New functions will be added to this set, in the future, as appropriate,
but this is a good starting set. Defines:
bus_{io,mem}_{map,unmap}
bus_{io,mem}_{read,write}_{1,2,4,8}
functions, and several types to go with them.
execpt without quotes. meant to be __CONCAT()ted for easy #includes
of machine-dependent headers for MI code (e.g. for the MI ISA/EISA/PCI/TC
bus code).
now has a single device tree (rather than a forest). Also, attach
EISA only if it's present, and attach in order: PCI, EISA, ISA (most
specific to least specific).
