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  1. 13 May, 2014 1 commit
  3. 12 May, 2014 11 commits
    • Ralf Baechle's avatar
      MIPS: inst.h: Rename BITFIELD_FIELD to __BITFIELD_FIELD. · 8471ac1b
      Ralf Baechle authored 
      <uapi/asm/inst.h> is exported to userland so the macro name BITFIELD_FIELD
pollutes the namespace.  Prefix the name with __ fixes this.
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      8471ac1b
    • Ralf Baechle's avatar
      MIPS: Remove file missed when removing rm9k support a while ago. · cdbb03b0
      Ralf Baechle authored 
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      cdbb03b0
    • Aaro Koskinen's avatar
      MIPS/loongson2_cpufreq: Fix CPU clock rate setting · 8e8acb32
      Aaro Koskinen authored 
      Loongson2 has been using (incorrectly) kHz for cpu_clk rate. This has
been unnoticed, as loongson2_cpufreq was the only place where the rate
was set/get. After commit 652ed95d
(cpufreq: introduce cpufreq_generic_get() routine) things however broke,
and now loops_per_jiffy adjustments are incorrect (1000 times too long).
The patch fixes this by changing cpu_clk rate to Hz.
Signed-off-by: default avatarAaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: cpufreq@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Patchwork: https://patchwork.linux-mips.org/patch/6678/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      8e8acb32
    • Paul Bolle's avatar
      MIPS: Loongson: No need to select GENERIC_HARDIRQS_NO__DO_IRQ · 3deff253
      Paul Bolle authored 
      Commit 0e476d91 ("MIPS: Loongson: Add Loongson-3 Kconfig options")
added "select GENERIC_HARDIRQS_NO__DO_IRQ". But the Kconfig symbol
GENERIC_HARDIRQS_NO__DO_IRQ was already removed in v2.6.38, so that
select is a nop. Drop it.
Signed-off-by: default avatarPaul Bolle <pebolle@tiscali.nl>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/6677/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      3deff253
    • Maciej W. Rozycki's avatar
      MIPS: csum_partial.S CPU_DADDI_WORKAROUNDS bug fix · 44ba138f
      Maciej W. Rozycki authored 
      This change reverts most of commit
60724ca5 [MIPS: IP checksums: Remove
unncessary .set pseudos] that introduced warnings with the
CPU_DADDI_WORKAROUNDS option set:

arch/mips/lib/csum_partial.S: Assembler messages:
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:467: Warning: used $3 with ".set at=$3"
[...]
arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:577: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3"
arch/mips/lib/csum_partial.S:601: Warning: used $3 with ".set at=$3"
[and so on, and so on...]

The warnings are benign and good code is produced regardless because no
macros that'd use the assembler's temporary register are involved, however
the `.set noat' directives removed by the commit referred are crucial to
guarantee this is still going to be the case after any changes in the
future.  Therefore they need to be brought back to place which this
change does.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6686/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      44ba138f
    • Maciej W. Rozycki's avatar
      MIPS: __strncpy_from_user_asm CPU_DADDI_WORKAROUNDS bug fix · 465ca5d6
      Maciej W. Rozycki authored 
      This corrects assembler warnings and broken code generated in
__strncpy_from_user_asm:

arch/mips/lib/strncpy_user.S: Assembler messages:
arch/mips/lib/strncpy_user.S:52: Warning: Macro instruction expanded into
multiple instructions in a branch delay slot

with the CPU_DADDI_WORKAROUNDS option set.  The function schedules delay
slots manually where there is really no need to as GAS is happy to do it
all itself, so undo it all and remove `.set noreorder'.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6685/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      465ca5d6
    • Maciej W. Rozycki's avatar
      MIPS: __delay CPU_DADDI_WORKAROUNDS bug fix · 2db4bc34
      Maciej W. Rozycki authored 
      With CPU_DADDI_WORKAROUNDS enabled __delay assembles with a macro in a
branch delay slot:

{standard input}: Assembler messages:
{standard input}:18: Warning: Macro instruction expanded into multiple
instructions in a branch delay slot

and broken code results:

0000000000000000 <__delay>:
   0:	1480ffff 	bnez	a0,0 <__delay>
   4:	24010001 	li	at,1
   8:	0081202f 	dsubu	a0,a0,at
   c:	03e00008 	jr	ra
  10:	00000000 	nop
  14:	00000000 	nop

Consequently the function loops indefinitely, showing up prominently as a
hang in the delay loop calibration at bootstrap.

This change corrects the problem by forcing the immediate 1 into a
register while keeping code produced identical where CPU_DADDI_WORKAROUNDS
is disabled.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6669/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      2db4bc34
    • Maciej W. Rozycki's avatar
      MIPS: DEC/SNI: O32 wrapper stack switching fixes · 824122a3
      Maciej W. Rozycki authored 
      Commit 231a35d3 [[MIPS] RM: Collected
changes] broke DECstation support by introducing an incompatible copy of
arch/mips/dec/prom/call_o32.S in arch/mips/fw/lib/, built unconditionally.
The copy happens to land earlier of the two among the modules used in the
link and is therefore chosen for the DECstation rather than the intended
original.  As a result random kernel data is corrupted because a pointer
to the "%s" formatted output template is used as a temporary stack pointer
rather than being passed down to prom_printf.  This also explains why
prom_printf still works, up to a point -- the next argument is the actual
string to output so it works just fine as the output template until enough
kernel data has been corrupted to cause a crash.

This change adjusts the modified wrapper in arch/mips/fw/lib/call_o32.S to
let callers request no stack switching by passing a null temporary stack
pointer in $a1, reworks the DECstation callers to work with the updated
interface and removes the old copy from arch/mips/dec/prom/call_o32.S.  A
few minor readability adjustments are included as well, most importantly
O32_SZREG is now used throughout where applicable rather than hardcoded
multiplies of 4 and $fp is used to access the argument save area as a more
usual register to operate the stack with rather than $s0.

Finally an update is made to the temporary stack space used by the SNI
platform to guarantee 8-byte alignment as per o32 requirements.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6668/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      824122a3
    • Maciej W. Rozycki's avatar
      MIPS: DEC: Bus error handler <asm/cpu-type.h> fixes · af37530b
      Maciej W. Rozycki authored 
      Commit 69f24d17 [MIPS: Optimize
current_cpu_type() for better code.] missed an update for two DECstation
bus error support files that now do not build, this is a fix.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6667/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      af37530b
    • Ralf Baechle's avatar
      MAINTAINERS: TURBOchannel: Update entry · c406339c
      Ralf Baechle authored 
      Add mailing list and patchwork URL so patches now have a defined path.
Also add myself as a TURBOchannel maintainer.  However Maciej is going
to the the resident TURBOchannel guru.
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Acked-by: default avatar"Maciej W. Rozycki" <macro@linux-mips.org>
      c406339c
    • Ralf Baechle's avatar
      Revert "MIPS: MT: proc: Add support for printing VPE and TC ids" · 5508d456
      Ralf Baechle authored 
      Reverts commit 795038a6 because
d6d3c9af provides the same functionality
in a more generic way.  Both patches applied however means that the
VPE and TC IDs get printed twice currently.
      5508d456
  5. 09 May, 2014 6 commits
  7. 08 May, 2014 9 commits
  9. 07 May, 2014 6 commits
  11. 06 May, 2014 7 commits
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