fix i386 build for MSI/MSI-X support code.

branches: 1.13.6;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

branches: 1.12.12; 1.12.22; 1.12.26;
Delete unused functions eisa_mem_alloc() and eisa_mem_free().

branches: 1.11.10;
struct device * -> device_t

branches: 1.10.104; 1.10.108; 1.10.110; 1.10.112;
Redirect some includes to x86/foo.h

Merge Bill Sommerfeld's i386 MP branch. This code has some known
caveats, but works quite well in a lot of MP cases, and all
UP cases that I have tested. Parts of this will hopefully be
reworked in the not-too-distant future.

branches: 1.8.2; 1.8.4;
Add functions to read EISA configuration data for MEM, IRQ, DMA, and IO.

XXX Just error stubs on the i386 right now -- someone needs to write
XXX EISA BIOS code for i386.

branches: 1.7.2;
Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

kill __P in these files. (I had to look at them anyway with an eye for
adding some protos... and adding them with __P seems wrong, but mixing
__P and not __P in the same file seems wrong too, so...)

branches: 1.5.8; 1.5.16; 1.5.18;
Moved from ../eisa/eisa_machdep.h,v

Pull thorpej-bus-dma branch into mainline.

branches: 1.3.8;
Implement eisa_mem_{alloc,free}(), a method for allocating/freeing
EISA bus physical address space.

This i386 implementation allocates system physical address space
after the end of RAM.

make the EISA code look a bit more like the PCI code, in the way
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.

Attach isa, eisa, and pci to mainbus now, rather than root. The i386
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).