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Catch up with svn r96606 (cvs rev 1.127 2002/05/14 20:35:29) of

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sys/param.h and move the MI numbers out of here.  Also move the MI
defines.  Also remove a couple defines not in use (not sure if it is
age, or OpenBSD origins for thse).  Note the current values that are
overrides that appear to be odd in some way.

More cleanup could be done here: NBPG appears to be spelled PAGE_SIZE
these days.  There's new ways to spell PGOFSET and PGSHIFT too, I
think.  These constants duplicate the MI constants and are sprinkled
into the mips code only.  Further investigation is needed.
This commit is contained in:
Warner Losh 2008-09-28 19:44:38 +00:00
parent 5f85c2cdd9
commit e805961dde
1 changed files with 4 additions and 43 deletions
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47
sys/mips/include/param.h
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@ -109,64 +109,25 @@
#define KERNBASE 0x80000000 /* start of kernel virtual */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size */
#define MAXPHYS (128 * 1024) /* max raw I/O transfer size */
#define MAXDUMPPGS 1
#define CLSIZE 1
#define CLBYTES (CLSIZE * NBPG)
#define CLSIZELOG2 0
#define BLKDEV_IOSIZE 2048 /* xxx: Why is this 1/2 page? */
#define MAXDUMPPGS 1 /* xxx: why is this only one? */
/*
* NOTE: In FreeBSD, Uarea's don't have a fixed address.
* Therefore, any code imported from OpenBSD which depends on
* UADDR, UVPN and KERNELSTACK requires porting.
* XXX: 3 stack pages? Not 4 which would be more efficient from a tlb
* XXX: point of view.
*/
#define KSTACK_PAGES 3 /* kernel stack*/
#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */
#define UPAGES 2
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#ifndef MSIZE
#define MSIZE 256 /* size of an mbuf */
#endif /* MSIZE */
#ifndef MCLSHIFT
#define MCLSHIFT 11
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* enough for whole Ethernet packet */
#define MCLOFSET (MCLBYTES - 1)
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (4096*1024/CLBYTES)
#endif
/* pages ("clicks") (4096 bytes) to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* pages to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(x) ((x) << DEV_BSHIFT)
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and should use the bsize