Commit Graph

22 Commits

Author SHA1 Message Date
David VomLehn 0d365753d0 MIPS: PowerTV: Separate PowerTV USB support from non-USB code
Separate USB code into a file separate from asic/asic_devices.

Separating the USB code from everything else in asic/asic_devices.c goes
a long way toward reducing the use of that file as a dumping ground for
everything that didn't seem to fit anywhere else.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Cc: greg@kroah.com
Cc: linux-usb@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1522/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:26:34 +01:00
David VomLehn 51f1336d4d MIPS: PowerTV: Add Gaia platform definitions.
Define ASIC address, memory preallocations, and initialization code for the
Gaia platform.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1519/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:26:31 +01:00
David VomLehn 0d59050496 MIPS: PowerTV: Simplify command line handling and needed config changes
Additional changes to Youichi Yuasa's command line simplication code

The PowerTV platform uses a non-standard way to get the kernel command
line--we insert a built-in command line into arcs_cmdline and to
get additional command line information from the bootloader via a
pointer in the a1 register. It is necessary to insert a space between
to the two strings or the last argument from arcs_cmdline and the first
argument from the bootloader may be inadvertantly combined.

It is also necessary to set CONFIG_CMDLINE_BOOL to "y" and to set the
default command line to an empty string to get the simplified code to
work properly in the PowerTV environment.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1438/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:26:02 +01:00
Christoph Egger bc7cb37788 MIPS: PowerTV: Removing dead CONFIG_DIAGNOSTICS
CONFIG_DIAGNOSTICS doesn't exist in Kconfig, therefore removing all
references for it from the source code.

Signed-off-by: Christoph Egger <siccegge@cs.fau.de>
To: David VomLehn <dvomlehn@cisco.com>
To: Yoichi Yuasa <yuasa@linux-mips.org>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Cc: vamos@i4.informatik.uni-erlangen.de
Patchwork: https://patchwork.linux-mips.org/patch/1374/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:26:01 +01:00
Ralf Baechle 026dab3c51 MIPS: PowerTV: Migrate to new platform makefile style.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:25:52 +01:00
David VomLehn 339e658b88 MIPS: PowerTV: Correct ASIC device register names and locations
Correct ASIC device register names and addresses for USB devices.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1258/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:25:40 +01:00
David VomLehn ca36c36b78 MIPS: PowerTV: Use O(1) algorthm for phys_to_dma/dma_to_phys
Replace phys_to_dma()/dma_to_phys() looping algorithm with an O(1) algorithm
The approach taken is inspired by the sparse memory implementation: take a
certain number of high-order bits off the address them, use this as an
index into a table containing an offset to the desired address and add
it to the original value. There is a table for mapping physical addresses
to DMA addresses and another one for the reverse mapping. The table sizes
depend on how fine-grained the mappings need to be; Coarser granularity
less to smaller tables.  On a processor with 32-bit physical and DMA
addresses, with 4 MIB granularity, memory usage is two 2048-byte arrays.
Each 32-byte cache line thus covers 64 MiB of address space.

Also, renames phys_to_bus() to phys_to_dma() and bus_to_phys() to
dma_to_phys() to align with kernel usage.

[Ralf: Fixed silly build breakage due to stackoverflow warning caused by
huge array on stack.]

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1257/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-08-05 13:25:40 +01:00
David VomLehn 28d7d213a1 MIPS: PowerTV: Move register setup to before reading registers.
The 4600 family code reads registers to differentiate between two ASIC
variants, but this was being done prior to the register setup. This moves
register setup before the reading code.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1392/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-07-26 19:08:16 +01:00
David VomLehn 4f1e099582 MIPS: Clean up tables for bootmem allocation
Modifications to the boot memory allocation structures to make them easier
to read and maintain. Note that this will not pass checkpatch because
it wants a structure element initializer to be enclosed in a
do {...} while(...), which is obvious nonsensical.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1207/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-05-21 21:31:17 +01:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
David VomLehn 81fc017954 MIPS: PowerTV: Eliminate duplicate opcode definition macros
Change to different macros for assembler macros since the old names in
powertv_setup.c were co-opted for use in asm/asm.h. This broken the
build for the powertv platform. This patch introduces new macros based on
the new macros in asm.h to take the place of the old macro values.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/985/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27 12:53:41 +01:00
Ralf Baechle c45ef44f47 MIPS: PowerTV: Convert IRQ controller lock to raw spinlock.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: David VomLehn <dvomlehn@cisco.com>
2010-02-27 12:53:34 +01:00
Roel Kluin 2fe0626080 MIPS: Cleanup switches with cases that can be merged
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
To: linux-mips@linux-mips.org
To: Andrew Morton <akpm@linux-foundation.org>
To: LKML <linux-kernel@vger.kernel.org>
Patchwork: http://patchwork.linux-mips.org/patch/860/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27 12:53:14 +01:00
David VomLehn 59dfa2fcae MIPS: PowerTV: Streamline access to platform device registers
Pre-compute addresses for the basic ASIC registers. This speeds up access
and allows memory for unused configurations to be freed. In addition,
uninitialized register addresses will be returned as NULL to catch bad
usage quickly.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/806/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-28 00:03:31 +01:00
Yoichi Yuasa 9b54dc5869 MIPS: Malta, PowerTV: Remove unnecessary "Linux started"
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/813/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:36 +01:00
David VomLehn 1dc238632b MIPS: PowerTV: Remove extra r4k_clockevent_init() call
A call to r4k_clocksource_init() was added to plat_time_init(), but
when init_mips_clock_source() calls the same function, boot fails in
clockevents_register_device(). This patch removes the extraneous call.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
Patchwork: http://patchwork.linux-mips.org/patch/803/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:35 +01:00
Yoichi Yuasa 7e326d687d MIPS: PowerTV: simplify prom_init_cmdline() and merge into prom_init()
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/801/
Reviewed-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:33 +01:00
Yoichi Yuasa 0eb99a9354 MIPS: PowerTV: Remove unused platform_die()
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/800/
Reviewed-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:33 +01:00
Yoichi Yuasa 2620c3570f MIPS: PowerTV: Remove mips_machine_halt()
mips_machine_halt() is same as mips_machine_restart().  Also delete the
registration of _machine_halt and pm_power_off because mips_machine_halt()
is the restart function.

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/798/
Reviewed-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:32 +01:00
Yoichi Yuasa 09b7c9f24d MIPS: PowerTV: Remove unused ptv_memsize
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/799/
Reviewed-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:32 +01:00
Yoichi Yuasa 99d2b173e5 MIPS: PowerTV: Remove unused prom_getcmdline()
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/797/
Reviewed-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-01-12 18:19:31 +01:00
David VomLehn a3a0f8c8ed MIPS: PowerTV: Base files for Cisco PowerTV platform
Add the Cisco Powertv cable settop box to the MIPS tree. This platform is
based on a MIPS 24Kc processor with various devices integrated on the same
ASIC. There are multiple models of this box, with differing configuration
but the same kernel runs across the product line.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/132/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-12-17 01:57:17 +00:00