Warner Losh 7138b71d5f Do not write to those config registers that are unambiguously defined ... in the various pci specifications as readonly. vendor, subvendor, device and subdevice are required to be loaded in hardware by some means that isn't the system BIOS or other system software (although some devices do have ways of accomplishing this). class and subclass are defined to be read-only in section 6.2.1 (v2.2). Apart from the status register, which we weren't touching, these are the only read-only registers I could find in the 2.2 spec. progif is also defined as being read-only in section 6.2.1. However, the PCI IDE programming document specifically states that some of the bits are read/write. Since we may have to restore registers before we have a driver attached, go ahead and restore this one byte when transitioning between D3 and D0. The PCI spec also says that writes to reserved and unimplemented registers must be completed normally. It makes no statements about writes to read-only registers, so be as conservative as possible, while covering the exception to the rule that is documented in a subpart of the standard. Requested by: socttl		2004-05-24 15:52:57 +00:00
..
alpha	Moved most of the "MI" definitions and declarations from <machine/profile.h>	2004-05-19 15:41:26 +00:00
amd64	Oops, ".align 4" for the data section in the previous commit should	2004-05-24 12:42:16 +00:00
arm	Remove two debugging printf().	2004-05-22 13:15:14 +00:00
boot	Markup fixes.	2004-05-16 22:51:36 +00:00
cam	Quirk for Neuros USB audio device.	2004-05-02 19:24:23 +00:00
coda	Device megapatch 5/6:	2004-02-21 21:32:15 +00:00
compat	Small timer cleanups:	2004-04-30 20:51:55 +00:00
conf	Fixed profiling of trap, syscall and interrupt handlers and some	2004-05-24 12:08:56 +00:00
contrib	This commit was generated by cvs2svn to compensate for changes in r129059,	2004-05-09 03:06:25 +00:00
crypto
ddb	Fixed DDB_NOKLDSYM on amd64's:	2004-05-18 05:30:06 +00:00
dev	Do not write to those config registers that are unambiguously defined	2004-05-24 15:52:57 +00:00
fs	Switch from using the vnode interlock to a private mutex in fifo_open()	2004-05-17 20:16:40 +00:00
geom	- Change command name from 'config' to 'configure'.	2004-05-21 15:23:48 +00:00
gnu	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
i4b	Convert callers to the new bus_alloc_resource_any(9) API.	2004-03-17 17:50:55 +00:00
i386	Revert part of rev 1.230 and assume that all EISA IRQs use active high	2004-05-24 15:51:46 +00:00
ia64	Moved most of the "MI" definitions and declarations from <machine/profile.h>	2004-05-19 15:41:26 +00:00
isa	Move fdc from isa/fd.c to dev/fdc/fdc.c. The old files were	2004-05-17 05:46:16 +00:00
isofs/cd9660	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
kern	Implement the new KERN_PROC_RGID option, and also implement the	2004-05-22 23:11:44 +00:00
libkern	Import libkern arm specific bits.	2004-05-14 12:28:31 +00:00
modules	- Connect geom(8) and its libraries to the build.	2004-05-20 10:37:13 +00:00
net	Remove another redundant if_output initialization.	2004-05-24 11:01:45 +00:00
net80211	Link state change notification of ethernet media to the routing socket.	2004-05-05 15:48:06 +00:00
netatalk	Remove redundant call to soisdisconnected() from ddp_abort(), as it	2004-05-05 03:34:37 +00:00
netatm	These are changes to allow to use the Intel C/C++ compiler (lang/icc)	2004-03-12 21:45:33 +00:00
netgraph	Whitespace nit.	2004-05-19 11:35:03 +00:00
netinet	When checking for possible port theft, skip over a TCP inpcb	2004-05-20 06:35:02 +00:00
netinet6	Fix a bug which I discovered recently while doing IPv6 testing at	2004-05-14 03:57:17 +00:00
netipsec	use correct address for SADB_EXT_ADDRESS_DST in key_do_allocsa_policy	2004-05-03 05:15:53 +00:00
netipx	Rename dup_sockaddr() to sodupsockaddr() for consistency with other	2004-03-01 03:14:23 +00:00
netkey
netnatm	Rename dup_sockaddr() to sodupsockaddr() for consistency with other	2004-03-01 03:14:23 +00:00
netncp	Make the process_exit eventhandler run without Giant. Add Giant hooks	2004-03-14 02:06:28 +00:00
netsmb	Rename dup_sockaddr() to sodupsockaddr() for consistency with other	2004-03-01 03:14:23 +00:00
nfs	Remove advertising clause from University of California Regent's	2004-04-07 05:00:01 +00:00
nfs4client	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
nfsclient	Make vm_page's PG_ZERO flag immutable between the time of the page's	2004-05-06 05:03:23 +00:00
nfsserver	The socket code upcalls into the NFS server using the so_upcall	2004-05-24 04:06:14 +00:00
opencrypto	kthread_exit() no longer requires Giant, so don't force callers to acquire	2004-03-05 22:42:17 +00:00
pc98	MFi386: revision 1.1160.	2004-05-18 11:56:56 +00:00
pccard	Convert callers to the new bus_alloc_resource_any(9) API.	2004-03-17 17:50:55 +00:00
pci	Only initialize the if_sis callout as MPSAFE if debug.mpsafenet is set	2004-05-23 22:22:29 +00:00
posix4
powerpc	Moved most of the "MI" definitions and declarations from <machine/profile.h>	2004-05-19 15:41:26 +00:00
rpc	Remove advertising clause from University of California Regent's	2004-04-07 05:00:01 +00:00
security	Remove dead code. (This loop counted the number of rules, but the count	2004-05-15 20:55:19 +00:00
sparc64	Use unsigned types for the arguments of the atomic(9) operations,	2004-05-22 00:52:16 +00:00
sys	Define a KERN_PROC_RGID option for kvm_getprocs().	2004-05-22 23:08:49 +00:00
tools	Correct $FreeBSD$ style.	2004-04-16 05:22:11 +00:00
ufs	Upon further review it was decided this piece of the msync(2)	2004-05-21 12:05:48 +00:00
vm	To date, unwiring a fictitious page has produced a panic. The reason	2004-05-22 04:53:51 +00:00
Makefile	Try harder not to compile anything in sys/boot for arm.	2004-05-16 00:19:12 +00:00