src-test2/sys/amd64/include/bus.h, branch release/7.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2008-02-24T05:45:17Z

'RELENG_7_0_0_RELEASE'. This commit was manufactured to restore the state of the 7.0-RELEASE image.

Merge/sync with i386: various cosmetic tweaks

2006-03-14T00:01:56Z

Remove bus_{mem,p}io.h and related code for a micro-optimization on i386

2005-05-29T04:42:30Z

and amd64. The optimization is a trivial on recent machines. Reviewed by: -arch (imp, marcel, dfr)

MFi386: remove comment

2005-05-22T16:31:32Z

Break out the definition of bus_space_{tag,handle}_t and a few other types

2005-04-18T21:45:34Z

into _bus.h to help with name space polution from including all of bus.h. In a few days, I'll commit changes to the MI code to take advantage of thse sepration (after I've made sure that these changes don't break anything in the main tree, I've tested in my trees, but you never know...). Suggested by: bde (in 2002 or 2003 I think) Reviewed in principle by: jhb

MFi386: track bus.h changes (unsplit bus_${machine}.h)

2005-04-15T18:38:59Z

AMD64 physical space is much larger than i386, de-i386 the bus_space and

2003-05-12T02:44:37Z

bus_dma MD code for AMD64. (And a trivial ifdef update in dev/kbd because of this). More updates are needed here to take advantage of the 64 bit instructions. Approved by: re (blanket amd64/*)

Commit MD parts of a loosely functional AMD64 port. This is based on

2003-05-01T01:05:25Z

a heavily stripped down FreeBSD/i386 (brutally stripped down actually) to attempt to get a stable base to start from. There is a lot missing still. Worth noting: - The kernel runs at 1GB in order to cheat with the pmap code. pmap uses a variation of the PAE code in order to avoid having to worry about 4 levels of page tables yet. - It boots in 64 bit "long mode" with a tiny trampoline embedded in the i386 loader. This simplifies locore.s greatly. - There are still quite a few fragments of i386-specific code that have not been translated yet, and some that I cheated and wrote dumb C versions of (bcopy etc). - It has both int 0x80 for syscalls (but using registers for argument passing, as is native on the amd64 ABI), and the 'syscall' instruction for syscalls. int 0x80 preserves all registers, 'syscall' does not. - I have tried to minimize looking at the NetBSD code, except in a couple of places (eg: to find which register they use to replace the trashed %rcx register in the syscall instruction). As a result, there is not a lot of similarity. I did look at NetBSD a few times while debugging to get some ideas about what I might have done wrong in my first attempt.

Add the following functions/macros to support byte order conversions and

2002-02-27T17:16:18Z

device drivers for bus system with other endinesses than the CPU (using interfaces compatible to NetBSD): - bwap16() and bswap32(). These have optimized implementations on some architectures; for those that don't, there exist generic implementations. - macros to convert from a certain byte order to host byte order and vice versa, using a naming scheme like le16toh(), htole16(). These are implemented using the bswap functions. - stream bus space access functions, which do not perform a byte order conversion (while the normal access functions would if the bus endianess differs from the CPU endianess). htons(), htonl(), ntohs() and ntohl() are implemented using the new functions above for kernel usage. None of the above interfaces is currently exported to user land. Make use of the new functions in a few places where local implementations of the same functionality existed. Reviewed by: mike, bde Tested on alpha by: mike

- Moved the bus_dma declarations from bus_{at386,pc98}.h into bus_dma.h.

2001-10-06T16:27:21Z

(bus_dma.h is repo-copied from bus_at386.h) - Added '#include ' into bus.h for backward compatibility.