scottb
b8bb612601
Add ibcs2_sendsig function.
...
Add ibcs2_sigcode function to locore because we need to call our own
version of sigreturn.
Add support for emul_ibcs2_xout (XENIX) structure because we need to emulate
some syscalls differently.
1998-03-05 04:20:44 +00:00
thorpej
53e3bf87b9
Fix think'o in last kcopy() change.
1998-03-05 02:10:57 +00:00
thorpej
df1fcaa8e3
Rename NetBSD/news to NetBSD/newsmips.
1998-03-04 22:26:35 +00:00
thorpej
157b712178
Rename NetBSD/news to NetBSD/newsmips.
1998-03-04 22:14:13 +00:00
mikel
415c4a15df
duplicate i386 fixes (q.v.)
1998-03-04 07:20:13 +00:00
cgd
8854631e5f
add file declarations for MD pciide file.
...
add (temporary) device/file declarations for the MI PCI IDE controller
driver. These are present here until the wdc declaration mess is
resolved, because until then they need to go into MD files files in
places where they play nice with the wdc declaration.
1998-03-04 06:40:29 +00:00
thorpej
f766e521be
In kcopy(), make sure we save and restore the old fault handler; kcopy()
...
is called from uiomove(), which may be in the code path of servicing
a non-fatal page fault caused by a copyin() or copyout().
Originally suggested by Steve Woodford.
1998-03-04 06:39:14 +00:00
cgd
ccdea2d9c8
machine-dependent bits (for compat interrupt mapping) of PCI IDE driver.
1998-03-04 06:35:47 +00:00
thorpej
a2db880e8c
In kcopy(), make sure we save and restore the old fault handler; kcopy()
...
is called from uiomove(), which may be in the code path of servicing
a non-fatal page fault caused by a copyin() or copyout().
1998-03-04 02:11:58 +00:00
thorpej
da3c8e52f1
Make this work with DEBUG="-g"
1998-03-03 07:38:40 +00:00
thorpej
803f5aa188
Remove the memcpy() alternate entry point for bcopy(), a temporary measure
...
until the memcpy()/bcopy() thing is worked out.
1998-03-02 23:40:42 +00:00
thorpej
f02b1a7a33
Make this compile again in light of Lite2 merge. (Yuck.)
1998-03-02 23:17:19 +00:00
scottr
da7d7ca568
Add magic number for driver map structure. (oops!)
1998-03-02 22:40:31 +00:00
cgd
09dbd9234d
fix typo in last commit (noticed on inspection)
1998-03-02 21:36:55 +00:00
cgd
7ff7b02fac
allow LDSTATIC definition to be overridden by bsd.own.mk/mk.conf
1998-03-02 20:01:05 +00:00
cgd
9da165424c
allow LDSTATIC definition to be overridden by bsd.own.mk/mk.conf
1998-03-02 19:57:00 +00:00
fvdl
25bc5ab033
Don't make simple_lock decls dependent on NCPU > 1, be consistent with
...
the rest of the kernel.
1998-03-02 18:06:32 +00:00
fvdl
ede1a3fc5b
Make this compile again.
1998-03-02 17:58:34 +00:00
drochner
e3d8e9c72b
enable compatibility for old partition ID per default
1998-03-02 17:07:53 +00:00
ragge
8e2874bf64
Support for UVM on VAXen.
1998-03-02 17:00:00 +00:00
drochner
3bb9e75863
Change MBR partition type for NetBSD to 0xa9, like the i386 port.
...
Provide compatibility via COMPAT_386BSD_MBRPART.
1998-03-02 16:18:17 +00:00
ross
03169f0089
Second part of cdev_decl() migration. Declare cputype variable.
...
Add config info for a12 switch driver and console driver.
1998-03-02 08:04:04 +00:00
ross
41a61f7c9e
Update interrupt name table for a12 crossbar.
1998-03-02 07:47:52 +00:00
ross
b8d5ca6c78
Centralize cdev_decl() for these MI drivers + a12dc in machine/conf.h (cgd)
...
(This does not introduce any config or option dependencies.)
1998-03-02 07:44:18 +00:00
ross
ff94450f84
Use the more consistent register field names & add ctags(1) keys.
1998-03-02 07:07:41 +00:00
ross
6e6f663204
Rewrite of interrupt dispatch logic. Add ctags(1) keys for *a12*.h files.
1998-03-02 07:03:20 +00:00
ross
13aeff8570
Fix attachment message.
1998-03-02 06:59:38 +00:00
ross
1ada245647
Support attachment of xb and a12dc, define most of the remaining
...
core logic register fields.
1998-03-02 06:56:16 +00:00
ross
469f9b6126
Clean up attachment code and prototypes.
1998-03-02 06:53:34 +00:00
mikel
dfb1317f8a
remove some lint; from Thorsten Frueauf in PR 5085.
...
also made one implicit int declaration explicit.
1998-03-02 06:20:16 +00:00
mikel
3119a26ccd
s/CFLAGS/CPPFLAGS/
1998-03-02 06:17:29 +00:00
thorpej
7a571c643b
Rename a few macros to better describe what they are:
...
- kvtol1pte() -> l1pte_index()
- vatoste() -> l2pte_index()
- vatopte() -> l3pte_index()
1998-03-02 00:49:01 +00:00
thorpej
54bb4f9e6e
Rewrite pmap_enter() to have a more sane structure, useful for when
...
page table page management is rewritten.
1998-03-02 00:22:54 +00:00
fvdl
25a2f5ee46
Put #if NCPU > 1 around initialization of simple_locks too, to avoid
...
compile errors.
1998-03-01 23:19:01 +00:00
augustss
1918ca1e5b
Change ie[01] to ef, ai, and ix so that these kernels can be used again.
1998-03-01 20:45:26 +00:00
fvdl
0485953099
Make this compile after the lite2 merge.
1998-03-01 13:22:55 +00:00
ross
4ebd177543
Remove the A12 from the rogue's gallery of the promcons-addicted.
1998-03-01 08:17:36 +00:00
ross
39254d4d4b
Poll console at 50 Hz, not 1024 Hz! (4 tlb and imb coherency ops per poll
...
make this exceedingly expensive even on an alpha) Note: only 3 systypes
still use promcons.
1998-03-01 07:40:11 +00:00
is
eb3cda883b
Probe for the native DraCo (rekeycaped MF-II) keyboard, instead of guessing
...
it from the QuickLogic chip version byte.
If found, switch it to non-autorepeat mode (which seems to avoid the race
condition which made my keyboard driver / X server lose state under heavy
interupt load).
If not found, assume an Amiga keyboard on CIA-A.
XXX We should probe for the presence of the CIAs on the DraCo.
1998-02-28 21:53:15 +00:00
veego
b6ca941200
Sync it with the i386 version so lint doesn't complains about an syntax
...
error for __warn_references.
1998-02-28 12:20:25 +00:00
ragge
ad1f451760
Move the boot program higher up in memory; to allow loading of bigger kernels.
1998-02-28 12:10:13 +00:00
ross
2170c2a46d
Force elf symbol sections to an addressable boundary.
1998-02-28 10:38:55 +00:00
cgd
18a1481f7a
Use NFS_BOOT_DHCP rather than NFS_BOOT_BOOTP. The former is more
...
flexible, and the boot blocks use DHCP already(!!!) and it'd be good
for the kernel to be consistent with them.
1998-02-28 02:01:32 +00:00
pk
d22f956657
Remove `_NEW_I82586'.
1998-02-28 01:15:51 +00:00
thorpej
ba3ddd48ad
Move the code that enters and removes entries from the pv_table into
...
functions pmap_enter_pv() and pmap_remove_pv().
1998-02-28 01:07:05 +00:00
pk
32ad582965
Replace monolithic `ie0' and `ie1' driver by `ef', `ix', `ai' front-ends.
1998-02-27 23:57:31 +00:00
thorpej
9bbe89ea3f
Garbage-collect the kpt_page stuff; it was basically unused in this
...
pmap, and isn't applicable to how dynamically allocated kernel page
tables will work on the Alpha.
1998-02-27 22:25:25 +00:00
thorpej
11490942aa
Nuke memcpy() from here; it's in libkern.
1998-02-27 21:38:31 +00:00
thorpej
faf1155de5
Revamp pv_table management:
...
- Make pv_table an array of struct pv_head's, which contain LIST_HEADs
for the pv_entry's, as well as page attributes (mod, ref, ptpage).
- Use <sys/queue.h> to manipulate pv_entry lists.
- Fix several obvious bugs in pmap_collect_pv().
- Use K0SEG to access pv_page's.
1998-02-27 19:39:03 +00:00
thorpej
5ec2d93c1e
Fix a typo.
1998-02-27 19:13:04 +00:00
cgd
84fad9aba3
make it clear that the "old BSD partition ID!" message is a warning (by
...
prefacing it with "WARNING: ").
1998-02-27 18:57:40 +00:00
scottr
e3dfc809c6
Remove dpme.h, as it's no longer necessary.
1998-02-27 09:17:18 +00:00
scottr
c1ea2b45ff
Integrate Macintosh partition map and driver descriptor map definitions.
1998-02-27 09:15:21 +00:00
thorpej
f17bbcfffa
Changes necessitated by the fact that all pmaps have their own level 1
...
page tables: use curpcb to determine which level 1 map defines the
current VM context, and use that level 1 map when mapping and unmapping
the PROM.
1998-02-27 04:03:00 +00:00
thorpej
c4e7c88520
Step 1 of the Grand Alpha Pmap Rototill:
...
- Clean up pmap_bootstrap() some, and make a slight change to how the
PROM mappings are saved.
- Give each pmap its own level 1 page table, rather than sharing a global
level 1 page table. This will eventually allow for Very Large user
address spaces.
- Keep a list of all pmaps, so that when kernel level 2 page tables are
allocated, all level 1 tables may be updated.
- Add a couple of functions for allocating and freeing page table pages.
- Add a few comments about ASN allocation.
1998-02-27 03:59:58 +00:00
thorpej
5d56ce57ba
Several changes related to all pmaps having their own level 1
...
page table:
- Update the current hwpcb pointer in the SWITCH_CONTEXT macro, so that
we know it's always correct.
- Optimize cpu_switch(): if we're switching to ourselves, skip the
actual context swap.
- Clean up some comments and remove some code rendered obsolete by
the fact that address spaces are now selected by switching to a
new level 1 page table.
1998-02-27 03:53:49 +00:00
thorpej
cb6972d4d3
Implement alpha_pal_swpctx().
1998-02-27 03:44:53 +00:00
scottr
f5f997d1dc
Bump down maxusers to a reasonable value on a machine with 8MB.
1998-02-27 01:33:14 +00:00
gwr
0228ba8d86
Make the messages printed by _nodb_trap() more helpful.
1998-02-26 20:31:13 +00:00
gwr
eeb690065b
Use trap 14 as PROM abort
1998-02-26 19:30:59 +00:00
gwr
23b16936e8
Fix build with NFB=0
1998-02-26 16:01:18 +00:00
perry
edac6b7ff2
define kernel only inline static functions only #ifdef _KERNEL
1998-02-26 01:57:30 +00:00
thorpej
8d0d59284b
Use allocsys(), mips_init_msgbuf(), and mips_init_proc0(), plus small
...
changes for MACHINE_NEW_NONCONTIG.
1998-02-25 23:31:29 +00:00
thorpej
d6085102e9
DECstations have one physical memory segment.
1998-02-25 23:31:03 +00:00
thorpej
b3c5864223
Use allocsys(), mips_init_msgbuf(), and mips_init_proc0(), plus small
...
changes for MACHINE_NEW_NONCONTIG.
1998-02-25 23:30:33 +00:00
thorpej
c2e692ff93
PICA has one physical memory segment.
1998-02-25 23:30:11 +00:00
thorpej
330e4f8d24
Fix a few screwups that made it impossible to config these kernels.
1998-02-25 23:29:49 +00:00
thorpej
477d46784e
Use allocsys(), mips_init_msgbuf(), and mips_init_proc0(), plus small
...
changes for MACHINE_NEW_NONCONTIG.
1998-02-25 23:28:25 +00:00
thorpej
d184112bd5
NEWS has one physical memory segment.
1998-02-25 23:27:20 +00:00
thorpej
da6458bfb4
Implement and switch to MACHINE_NEW_NONCONTIG.
1998-02-25 23:26:41 +00:00
thorpej
4673e0c339
Prototype allocsys(), mips_init_msgbuf(), and mips_init_proc0().
1998-02-25 23:25:16 +00:00
thorpej
469520ccd4
Pull some code out of N mach_init() functions, and place it in a
...
common place:
- allocsys(), which computes space for and assigns addresses
to kernel data structures at boot time.
- mips_init_msgbuf(), which initializes the error message
buffer at the end of core.
- mips_init_proc0(), which initializes the U-area for proc0
and nullproc.
1998-02-25 23:24:35 +00:00
perry
398e0f8c64
add /* LINTLIBRARY */ to supress lots of "unused function" warnings
...
from lint.
1998-02-25 22:36:45 +00:00
perry
1ed8ea9966
note second parm of sysarch() is now void *, + trivial KNF, etc.
1998-02-25 21:41:55 +00:00
perry
56c01cbd82
change second parm of sysarch() from char * to void *
1998-02-25 21:24:56 +00:00
drochner
3ee0e26f7d
document 3c900 TPO support, add comments
1998-02-25 12:19:12 +00:00
drochner
41bbe0c360
3c900 TPO works too, as reported by Feico Dillema <dillema@acm.org>.
1998-02-25 12:15:49 +00:00
chuck
e308ffd825
compute st_map size properly
1998-02-24 19:01:59 +00:00
leo
25811c51ea
Declare 'fd_cd'.
1998-02-24 13:02:54 +00:00
leo
e4b379c7c1
Only try to initialize the PCI-bus when NPCI > 0.
1998-02-24 13:02:06 +00:00
thorpej
89d112dd92
Switch this kernel to UVM.
1998-02-24 11:05:37 +00:00
thorpej
7027d87a18
Duh! Use uvm_km_valloc_wait(), NOT uvm_km_zalloc() to allocate user page
...
tables. (Thanks for pointing that out, Chuck!)
1998-02-24 07:42:05 +00:00
thorpej
58509e699f
Add support for UVM.
1998-02-24 07:38:01 +00:00
scottr
a316576397
A change ripped out of i386/machdep.c:
...
--
When allocating bus space in bus_space_alloc(), use EX_FAST to find
the first fit in the map. The previous behavior violated the principle
of least surprise (especially annoying when you're debugging space allocation
problems). Suggested by Chris Demetriou.
1998-02-24 07:06:39 +00:00
scottr
15b125de34
ROM vectors and related information needed to support the Performa 588
...
(and quite probably all LC/Performa 580/588 models). Thanks to
Yasuhiro Endoh for providing the necessary data.
1998-02-24 07:00:14 +00:00
scottr
6f382db074
The code compiled in by the MADHATTER option is now standard issue. While
...
here, do a bunch of KNF, particularly whitespace issues.
1998-02-24 05:59:34 +00:00
mycroft
78875d069d
ofd -> ofdisk
1998-02-24 05:49:28 +00:00
mycroft
6bab18f8f1
Catch up with changes in dev/ofw. Add mainbus.
1998-02-24 05:45:51 +00:00
thorpej
7198bb7811
Set the VM page size after clearing the BSS segment.
1998-02-23 20:05:09 +00:00
thorpej
a3a297cc40
Two purely cosmetic whitespace changes.
1998-02-23 18:45:44 +00:00
scottr
c285c9fbfa
Remove the limit on bufpages we picked up from i386 in 1993
...
(which was removed from that port not long after), as it's not
an especially meaningful test.
Also, bump the number of swap buffers allocated to 3/4 the amount
of file i/o buffers (taken from the Amiga port).
1998-02-23 07:24:44 +00:00
mycroft
ee0b9799e7
Fix layout of powerpc_saved_state; copy in saved MSR.
1998-02-23 03:23:05 +00:00
mycroft
79f597383e
Fix layout of powerpc_saved_state.
1998-02-23 03:22:16 +00:00
mycroft
d387a356c8
Clean up, add physadr.
1998-02-23 03:21:40 +00:00
scottr
c1a185be97
Mostly KNF. There's still a bunch of ugly comments and some problems
...
with long lines, but this is at least a big step in the right direction.
1998-02-23 03:11:26 +00:00
scottr
e50238f77a
Rewritten II-series ADB code from John Wittkoski. Also, a whole
...
lotta KNF.
1998-02-23 03:09:40 +00:00
mycroft
d56d21012f
Slight rearrangement.
1998-02-23 01:54:26 +00:00
is
85c6760e2d
Initialize keyboard structures also from kbdopen(), if necessary.
...
To do this, move the flag variable to kbdenable().
This will make kernels with serial console provice a working keyboard driver.
1998-02-23 00:47:30 +00:00
mark
1876c03a83
Only include armfpe.h if we are building FPE support into the kernel.
...
Missed from the last commit.
1998-02-22 23:45:13 +00:00
mark
c67078a448
Update arm_fpe_[gs]etcontext() functions to take a struct fpreg pointer
...
as the second argument.
1998-02-22 23:39:53 +00:00
mark
5a2727a17e
Fix arm_fpe_[gs]etcontext() prototype declarations to take a
...
struct fpreg pointer as the second argument.
1998-02-22 23:38:18 +00:00
mark
b9ce4e7ddb
Include arm32/fpe-arm/armfpe.h for arm_fpe_[gs]etcontext() prototypes.
...
Remove unnecessary include files and cleanup some dead code.
1998-02-22 23:35:45 +00:00
is
7667dac2d2
Actually fix, rather than mask, the Amiga big machine panic: the pmap needs
...
to (pre)allocate enough kernel page table pages to (among others) map the
buffer cache buffers.
1998-02-22 22:51:46 +00:00
mycroft
c1444078b5
Finish making this compile after libkern changes.
1998-02-22 15:25:28 +00:00
mycroft
b20ba808f2
Clean up after ffs() change.
...
Do *not* set runtime here; the way it was done was highly bogus, and the value
just gets blasted right away by mi_switch().
1998-02-22 15:13:36 +00:00
drochner
e225b4cbdd
-check MBR signature before using MBR partition data
...
-add new FAT types and Linux EXT2 to the faked-up partition table
1998-02-22 14:48:27 +00:00
drochner
74b401ffd1
-correct misleading name and comment for MBR partition type 14
...
-add FAT32 and EXT2FS
1998-02-22 14:45:43 +00:00
ragge
1e3fb9012d
Type fix so that time get read correct on VS2000, from Ken Wellsch.
1998-02-22 14:19:39 +00:00
mycroft
1638d144ca
Always go to splhigh() inside DDB.
1998-02-22 14:07:21 +00:00
scw
ef52501a4f
Implement changes for UVM.
1998-02-22 11:33:10 +00:00
mycroft
bb0363853f
ffs() is identical to the one from libc, so just use that.
...
Move random() to libkern.
1998-02-22 09:31:00 +00:00
mycroft
533de19431
Remove random.s.
1998-02-22 08:51:04 +00:00
mycroft
dcfb8695ab
Move to libkern.
1998-02-22 08:50:17 +00:00
mycroft
065e369ab5
Remove random.s.
1998-02-22 08:35:33 +00:00
mycroft
8776736cea
Move to libkern.
1998-02-22 08:34:35 +00:00
mycroft
4b6d15532b
Nuke random.s.
1998-02-22 08:21:33 +00:00
mycroft
5a22434af5
Remove this copy of bzero().
1998-02-22 08:19:05 +00:00
mycroft
f118bc7042
Move to libkern.
1998-02-22 08:13:47 +00:00
mycroft
ab5aeaa789
Clean up #include paths.
...
Copy prom2boot() from kernel source.
rename _rtt() to OF_exit(), and add a _rtt() that calls it.
1998-02-22 07:42:30 +00:00
mycroft
03f75a79ff
Nuke the override of libkern SRCS from orbit.
1998-02-22 07:19:02 +00:00
mark
39ce947f1a
Add missing interrupt enable callbacks lost during the adding of ATAPI
...
support. Spotted while working on MI wdc support for the ICS interface.
1998-02-22 02:36:22 +00:00
mark
05fa7c54a5
Clean up the comments and correctly indent them. Change various RiscBSD
...
references to NetBSD ones.
1998-02-22 00:31:00 +00:00
mark
550b5bff23
Guard spl related variables and pmsputbuffer() with #ifdef MOUSE_IOC_ACK.
...
Declare pmsputbuffer() as static.
1998-02-22 00:25:03 +00:00
mark
a0ce540d73
Guard spl related variables and qmsputbuffer() with #ifdef MOUSE_IOC_ACK
1998-02-22 00:24:12 +00:00
mark
a55279da6a
Updated to use cpu_reset() rather than boot0().
...
Set cpu_reset_address to 0x00000000 for currently supported systems.
Update associated comments.
1998-02-22 00:08:16 +00:00
mark
d011ec2573
Provide a prototype for cpu_reset().
1998-02-22 00:05:56 +00:00
mark
dc37a51773
In the future we may want to branch somewhere other than zero when
...
reseting the CPU. Rename the boot0() function to cpu_reset() and
provide a variable to hold the cpu reset address.
1998-02-22 00:05:00 +00:00
jonathan
78b939d4b5
Pull up duplicated CPP definitions from float.h rev 1.10:
...
>DBL_MIN and DBL_MAX were less precise than they should have been.
1998-02-21 23:50:24 +00:00
mark
44e22f7606
Fix a couple of unused variable warnings for RC7500 builds.
1998-02-21 23:40:03 +00:00
mark
35c234d2a6
Replace -Wreturn-type with -Wall for CWARNFLAGS.
1998-02-21 23:30:56 +00:00
mark
88aa559e5e
Remove inclusion of machine/katelib.h
...
Remove local prototype of savectx().
Comment all the #endif lines for PMAP_DEBUG
Remove un-necessary variable 'up' from cpu_fork().
Use %p rather than %x for several debug print messages.
1998-02-21 23:27:10 +00:00
mark
018ce60490
Remove functions for disable_interrupts(), enable_interrupts() and
...
restore_interrupts() as these have been replaced by macros in
machine/cpufunc.h.
1998-02-21 23:21:28 +00:00
mark
2553c95bde
Include machine/cpufunc.h for interrupt disable/restore routines.
1998-02-21 23:19:36 +00:00
mark
24aaa5f9dd
Add macros for the CPU functions disable_interrupts(), enable_interrupts()
...
and restore_interrupts().
1998-02-21 23:17:05 +00:00
mark
ccb81fe3d3
Remove prototype declarations of disable_interrupts(), enable_interrupts()
...
and restore_interrupts() as these are CPU related functions.
1998-02-21 23:16:28 +00:00
mark
706589adb9
Update the L1_SEC() macro to take a cache enable mask.
...
Add a macro L1_SEC_SIZE to define the size of a L1 section.
1998-02-21 23:11:28 +00:00
mark
854d928a14
Fix typo in a DMA dummy stub function.
1998-02-21 23:09:37 +00:00
mark
6eccd50f49
Remove local prototype for savectx().
...
Update all map_section() function calls to map I/O sections as
non-cacheable.
1998-02-21 23:08:17 +00:00
mark
c273b285d8
Remove local prototype of savectx().
...
Updated all map_section() function calls to map sections as non-cacheable.
1998-02-21 23:04:54 +00:00
mark
99ae0b08fe
Updated all map_section() function calls to map I/O sections as
...
non-cacheable.
1998-02-21 23:02:34 +00:00
mark
1c782f5da1
Add a cacheable flag field to the map_section() function so that L1 page
...
table section mappings may be made cacheable.
Remove a few nasty hardcoded shifts and use macros from machine/pte.h
instead.
Cleaned up a few comments.
1998-02-21 23:00:57 +00:00
mark
745e11a2b1
Remove local prototype of savectx().
1998-02-21 22:57:44 +00:00
mark
628ae33403
Remove register declarations.
1998-02-21 22:56:58 +00:00
mark
1bd5283fb7
Remove inclusion of katelib.h and include cpu.h and cpufunc.h.
1998-02-21 22:52:50 +00:00
mark
ba8b28d360
Remove local prototypes of strstr().
1998-02-21 22:51:43 +00:00
mark
c81dae4473
Move some prototypes form katelib.h to a more suitable home in cpu.h
1998-02-21 22:49:18 +00:00
mark
ea04275578
Remove local prototype of disassemble() and include disassm.h instead
...
for prototype.
Fix compiler warnings about unused variables with certain config options.
1998-02-21 22:43:29 +00:00
mark
d13b903579
Remove local prototypes for disassemble() and include disassem.h instead
...
for the prototype.
1998-02-21 22:41:34 +00:00
mark
83fcf2d5c8
Define prototypes for disasm() and disassemble().
1998-02-21 22:38:40 +00:00
jonathan
f7bd3a0119
Move existing contextsw-avoidance code in rzdump() earlier, since rzready()
...
also calls biowait().
Some drives seek to modepage on every modepage geometry-sense in rzready()
cache dev_t of last readied device in rzdump() to elide rzready() calls.
2x speedup of dumps on rz25 and 20x-30x speedup on some IBM OEM 4gig drives.
1998-02-21 20:20:55 +00:00