Commit Graph

4271 Commits

Author SHA1 Message Date
Tom Rhodes
fda9ad60e4 According to kern_poll.c, you cannot use DEVICE_POLLING with SMP. Add a
commen about this in every NOTES file which lists DEVICE_POLLING.

PR:	46793
MFC:	1 day
2005-02-23 04:13:11 +00:00
John Baldwin
470273d7d9 MFi386: r1.17: Treat pin 0 as IRQ 0 rather than ExtINT if mixed mode is not
enabled by the enumerator.
2005-02-22 22:17:03 +00:00
John Baldwin
373dd87688 - Add a new quirk to indicate that pin 0 of the first I/O APIC is really
IRQ 0 and not an ExtINT pin.  The MADT enumerators ignore the PC-AT flag
  and ignore overrides that map IRQ 0 to pin 2 when this quirk is present.
- Add a block comment above the quirks to document each quirk so that we
  can use more verbose descriptions quirks.

MFC after:	2 weeks
2005-02-22 21:52:52 +00:00
Ruslan Ermilov
3971d2cf5e Use a common multi-inclusion protection, and add such a
protection to alpha/include/exec.h.
2005-02-19 21:16:48 +00:00
John Baldwin
1d15fdd97b - Add a custom version of exec_copyin_args() to deal with the 32-bit
pointers in argv and envv in userland and use that together with
  kern_execve() and exec_free_args() to implement linux_execve() for the
  amd64/linux32 ABI without using the stackgap.
- Implement linux_nanosleep() using the recently added kern_nanosleep().
- Use linux_emul_convpath() instead of linux_emul_find() in
  exec_linux_imgact_try().

Tested by:	cokane
Silence on:	amd64
2005-02-18 18:51:59 +00:00
Nate Lawson
31e3d3f5b9 MFi386 rev 1.61: Fix a few bugs in the legacy cpu attachment ivars. 2005-02-15 07:26:28 +00:00
Peter Wemm
699a8a09d6 MFi386: read from RTC_INTR after writing to RTC_STATUSB 2005-02-08 01:21:24 +00:00
Poul-Henning Kamp
0c3c54da63 Since we are quite unlikely to ever face another platform which
uses the i8237 without trying to emulate the PC architecture move
the register definitions for the i8237 chip into the central include
file for the chip, except for the PC98 case which is magic.

Add new isa_dmatc() function which tells us as cheaply as possible
if the terminal count has been reached for a given channel.
2005-02-06 13:46:39 +00:00
Nate Lawson
3045c8af3f Staticize the legacy cpu devclasses and revert the name for the acpi_cpu
devclass.  As pointed out by dfr@, devclasses don't have to share the same
linkage if multiple drivers have the same name.  Newbus should match the
devclasses based on name and allocate non-conflicting unit numbers.
2005-02-06 07:36:08 +00:00
Nate Lawson
3888a87205 Finish the job of sorting all includes and fix the build by including
malloc.h before proc.h on sparc64.  Noticed by das@

Compiled on:	alpha, amd64, i386, pc98, sparc64
2005-02-06 01:55:08 +00:00
Nate Lawson
959c26396c Make cpu_est_clockrate() more accurate by disabling interrupts for the
millisecond it is calibrating.  Suggested by jhb@ and bde@.  Don't clobber
the tsc_freq with the new value since it isn't accurate enough for
timecounters and the timecounter system as a whole needs support for
changing rates before we do this.  Subtract 0.5% from our measurement
to account for overhead in DELAY.  Note that this interface is for
estimating the clockrate and needs to work well at runtime so doing a full
calibration including disabling interrupts for a second is not feasible.
2005-02-05 23:16:27 +00:00
Nate Lawson
69bc96f231 Build cpufreq and acpi_perf on platforms that are likely to be able to
use them.
2005-02-05 21:01:09 +00:00
Alan Cox
fb1b26da19 Implement proper handling of PG_G mappings in pmap_protect(). (I don't
believe that this omission mattered before the introduction of MemGuard.)

Reviewed by: tegge@
MFC after: 1 week
2005-02-05 19:21:54 +00:00
Nate Lawson
dbfdf1736b MFi386: Merge updates to the cpu pseudo-driver. Compile, not runtime
tested.
2005-02-04 06:02:37 +00:00
Nate Lawson
4c4381e288 Add an implementation of cpu_est_clockrate(9). This function estimates the
current clock frequency for the given CPU id in units of Hz.
2005-02-04 05:32:56 +00:00
Maxim Sobolev
610ecfe035 o Split out kernel part of execve(2) syscall into two parts: one that
copies arguments into the kernel space and one that operates
  completely in the kernel space;

o use kernel-only version of execve(2) to kill another stackgap in
  linuxlator/i386.

Obtained from:  DragonFlyBSD (partially)
MFC after:      2 weeks
2005-01-29 23:12:00 +00:00
Peter Wemm
b6e89c6d47 JumboMFi386: use bitmapped IPI handler. Update elcr and default mptable
config handler.  Tidy up various local apic initialization.
2005-01-21 06:01:20 +00:00
Peter Wemm
4fe91893a6 MFi386: handle PSL_T properly across fork. Typo fix. 2005-01-21 05:57:45 +00:00
Peter Wemm
ba2426ff44 MFi386: whitespace, copyright header, etc updates 2005-01-21 05:56:41 +00:00
Peter Wemm
6db058b5f1 MFi386: use %rip - 1 for the symbol search address (for noreturn funcs) 2005-01-21 05:54:05 +00:00
John Baldwin
4cc99cf6b1 Remove redundant code to drop per-thread debug register state from
cpu_exit() as this is already performed in cpu_thread_exit() and the
debug state is per-thread rather than per-process.
2005-01-14 20:16:41 +00:00
Warner Losh
5e4470116c There are no PC98 amd64 machines, so gc a few stray ifdefs. 2005-01-11 03:44:17 +00:00
Scott Long
e015dfcfd1 Introduce bus_dmamap_load_mbuf_sg(). Instead of taking a callback arg, this
cuts to the chase and fills in a provided s/g list.  This is meant to optimize
out the cost of the callback since the callback doesn't serve much purpose for
mbufs since mbuf loads will never be deferred.  This is just for amd64 and
i386 at the moment, other arches will be coming shortly.
2005-01-07 07:57:18 +00:00
Warner Losh
125f6d40bd These are no longer relevant. They are scripts for extracting hints
from 4.x kernel config files.  User's wishing to upgrade from 4.x to 6
will need to go through 5.x, or grab this script from there.  These
scripts will remain in RELENG_5...
2005-01-07 00:54:35 +00:00
Warner Losh
46280ae719 Begin all license/copyright comments with /*- 2005-01-05 20:17:21 +00:00
Warner Losh
17d5b792e5 PC98 will never be defined for amd64 2005-01-05 20:11:13 +00:00
Jun Kuriyama
6f4e528a8e o Use tab instead of spaces for puc(4) line.
o Use capitalized "Ethernet" for consistency.
2005-01-05 05:25:21 +00:00
John Baldwin
118ef86edc Minor sync to i386 GENERIC in the form of comments and whitespace. 2004-12-30 18:51:23 +00:00
Nate Lawson
36bd442095 MFi386: Restore cpu_reset proxy code to enable reset from ddb on an AP. 2004-12-27 06:42:25 +00:00
Nate Lawson
593fbddfba Reduce diffs to i386. 2004-12-27 06:35:42 +00:00
Warner Losh
812fb8f294 Get rid of #ifdef for legacy system. Move that into the MD code.
Export minimal symbols to allow this to happen.
2004-12-24 23:03:17 +00:00
Alan Cox
1f70d62298 Modify pmap_enter_quick() so that it expects the page queues to be locked
on entry and it assumes the responsibility for releasing the page queues
lock if it must sleep.

Remove a bogus comment from pmap_enter_quick().

Using the first change, modify vm_map_pmap_enter() so that the page queues
lock is acquired and released once, rather than each time that a page
is mapped.
2004-12-23 20:16:11 +00:00
Alan Cox
ead42fc389 Use vtopde() instead of pmap_pde() in pmap_kextract(); vtopde() is smaller
and faster in cases, such as pmap_kextract(), where the pde is known to
exist.
2004-12-21 19:25:56 +00:00
Alan Cox
85f5b24573 In the common case, pmap_enter_quick() completes without sleeping.
In such cases, the busying of the page and the unlocking of the
containing object by vm_map_pmap_enter() and vm_fault_prefault() is
unnecessary overhead.  To eliminate this overhead, this change
modifies pmap_enter_quick() so that it expects the object to be locked
on entry and it assumes the responsibility for busying the page and
unlocking the object if it must sleep.  Note: alpha, amd64, i386 and
ia64 are the only implementations optimized by this change; arm,
powerpc, and sparc64 still conservatively busy the page and unlock the
object within every pmap_enter_quick() call.

Additionally, this change is the first case where we synchronize
access to the page's PG_BUSY flag and busy field using the containing
object's lock rather than the global page queues lock.  (Modifications
to the page's PG_BUSY flag and busy field have asserted both locks for
several weeks, enabling an incremental transition.)
2004-12-15 19:55:05 +00:00
Peter Wemm
2f6a1b4744 MFi386: rev 1.12: re-allow fast interrupts to cause preemption 2004-12-06 22:56:15 +00:00
Alan Cox
e07a123caf Replace (inlined) pmap_pte() calls with smaller, faster code where
possible, such as the inner loop of pmap_copy().

Remove two comments that apply to i386 but not amd64.
2004-12-04 22:02:31 +00:00
Alan Cox
664c816978 For efficiency eliminate the call to pmap_pte() from pmap_protect()'s and
pmap_remove()'s inner loop.  Instead, call pmap_pde_to_pte(), a new
function, prior to the inner loop.

Reviewed by: peter@, tegge@
2004-12-02 04:06:40 +00:00
Marcel Moolenaar
bcc5241c43 Change gdb_cpu_setreg() to not take the value to which to set the
specified register, but a pointer to the in-memory representation of
that value. The reason for this is twofold:
1. Not all registers can be represented by a register_t. In particular
   FP registers fall in that category. Passing the new register value
   by reference instead of by value makes this point moot.
2. When we receive a G or P packet, both are for writing a register,
   the packet will have the register value in target-byte order and
   in the memory representation (modulo the fact that bytes are sent
   as 2 printable hexadecimal numbers of course). We only need to
   decode the packet to have a pointer to the register value.

This change fixes the bug of extracting the register value of the P
packet as a hexadecimal number instead of as a bit array. The quick
(and dirty) fix to bswap the register value in gdb_cpu_setreg() as
it has been added on i386 and amd64 can therefore be removed and has
in fact been that.

Tested on: alpha, amd64, i386, ia64, sparc64
2004-12-01 06:40:35 +00:00
Peter Wemm
6210b1477c Remove unused cnt variable for the SMP case. Trim some excessive blank
lines while here.
2004-11-30 20:25:46 +00:00
Peter Wemm
a649898dd8 Update the gdb register extraction support to use the pcb wherever
possible, like on i386.  Registers are handled differently for caller
vs callee saved registers.
2004-11-30 00:55:49 +00:00
Peter Wemm
40d315c6c9 MFi386: join the %cr0 setup line now that i386 has lost the I386 ifdefs. 2004-11-29 23:27:07 +00:00
Peter Wemm
545d0f0638 Take advantage of the shutdown processing being wired to the BSP and
eliminate the evil cpu_reset_proxy code now that it will never be
activated.  i386 should pick this up as well.
2004-11-29 23:25:56 +00:00
Scott Long
ee8d8ca5c1 Don't flag alignment constraints as a reason for bouncing. This fixes the
trigger for other misbehaviour in the sym driver that was causing freezes at
boot.  Thanks to phk@ for reporting and testing this.
2004-11-29 14:49:27 +00:00
David Schultz
6004362e66 Don't include sys/user.h merely for its side-effect of recursively
including other headers.
2004-11-27 06:51:39 +00:00
Scott Long
4c10e55d26 Remove an extra #include 2004-11-21 06:28:35 +00:00
Scott Long
25590d09b9 Consolidate all of the bounce tests into the BUS_DMA_COULD_BOUNCE flag.
Allocate the bounce zone at either tag creation or map creation to help
avoid null-pointer derefs later on.  Track total pages per zone so that
each zone can get a minimum allocation at tag creation time instead of
being defeated by mis-behaving tags that suck up the max amount.
2004-11-21 04:15:26 +00:00
David Schultz
6484fde022 Remove references to U area and garbage collect includes.
Reviewed by:	arch@
2004-11-20 02:30:59 +00:00
David Schultz
ab44ebf537 Remove UAREA_PAGES.
Reviewed by:	arch@
2004-11-20 02:29:50 +00:00
David Schultz
11111b709f U areas are going away, so don't allocate one for process 0.
Reviewed by:	arch@
2004-11-20 02:29:25 +00:00
Scott Long
e835255791 Revert part of rev 1.56. Tag boundaries are handled by splitting segments,
not through bouncing.
2004-11-19 17:51:29 +00:00