Commit graph

11 commits

Author SHA1 Message Date
Ralf Baechle
a904f74785 [MIPS] Sibyte: Fix race in sb1250_gettimeoffset().
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
    
sb1250_gettimeoffset() simply reads the current cpu 0 timer remaining
value, however once this counter reaches 0 and the interrupt is raised,
it immediately resets and begins to count down again.
    
If sb1250_gettimeoffset() is called on cpu 1 via do_gettimeofday() after
the timer has reset but prior to cpu 0 processing the interrupt and
taking write_seqlock() in timer_interrupt() it will return a full value
(or close to it) causing time to jump backwards 1ms. Once cpu 0 handles
the interrupt and timer_interrupt() gets far enough along it will jump
forward 1ms.
    
Fix this problem by implementing mips_hpt_*() on sb1250 using a spare
timer unrelated to the existing periodic interrupt timers. It runs at
1Mhz with a full 23bit counter.  This eliminated the custom
do_gettimeoffset() for sb1250 and allowed use of the generic
fixed_rate_gettimeoffset() using mips_hpt_*() and timerhi/timerlo.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:30 +00:00
Ralf Baechle
a77f124294 [MIPS] Sibyte: Fix M_SCD_TIMER_INIT and M_SCD_TIMER_CNT wrong field width.
From Dave Johnson <djohnson+linuxmips@sw.starentnetworks.com>:
    
Field width should be 23 bits not 20 bits.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-18 16:59:29 +00:00
Andrew Isaacson
9a6dcea103 Support for BigSur board.
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:47 +01:00
Andrew Isaacson
4f19f99047 Sibyte header cleanup
Update sibyte headers to match Broadcom internal copies:
 - comment cleanup and updates
 - fix LittleSur part number to match the board silkscreen
    
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:46 +01:00
Andrew Isaacson
4cbf2beac2 BCM1480 headers
Add header files for BCM1480/1280/1455/1255 family of chips, and
update sb1250 headers which are shared by BCM1480 family.
    
Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/include/asm-mips/sibyte/bcm1480_int.h b/include/asm-mips/sibyte/bcm1480_int.h
new file mode 100644
2005-10-29 19:32:45 +01:00
Ralf Baechle
3cd9b6802d Cleanup Sibyte Kconfig a bit further.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:39 +01:00
Ralf Baechle
fe00f943e0 Sparseify MIPS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:50 +01:00
Maciej W. Rozycki
65bda1a95d Switch SiByte drivers back to __raw_*() functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:44 +01:00
Maciej W. Rozycki
6b12397954 Fix compilation; by Manish Lachwani.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:20 +01:00
Ralf Baechle
42a3b4f25a [PATCH] mips: nuke trailing whitespace
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:07 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00