By implementing an arch_nvram_ops struct, any platform can re-use the
drivers/char/nvram module without needing any arch-specific code
in that module. Atari does so here.
Atari has one user of nvram_check_checksum() whereas the other platforms
(i.e. x86 and ARM platforms) have none at all.
The generic NVRAM module, drivers/char/generic_nvram, implements a
/dev/nvram misc device. It is used only by 32-bit PowerPC platforms and
isn't generic enough to be more widely used.
The RTC NVRAM module, drivers/char/nvram, also implements a /dev/nvram
misc device. It is used by x86, ARM and
Also give functions more sensible names: nvram_misc_* for misc device ops,
nvram_proc_* for proc file ops and nvram_module_* for init and exit
functions. This makes them distict from nvram_ops members.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
drivers/char/nvram.c | 194
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
drivers/char/nvram.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
Index: linux/drivers/char/nvram.c
===
--- linux.orig/drivers/char/nvram.c
The nvram_read_byte() and nvram_write_byte() definitions in asm/nvram.h
duplicate those in linux/nvram.h. Get rid of the former to prepare for
adoption of struct arch_nvram_ops (which is defined in linux/nvram.h for
general use).
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
Changes
Implement arch_nvram_ops for PPC32 and make use of it in the generic_nvram
misc device module so that the nvram_* function exports can be removed.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
arch/powerpc/include/asm/nvram.h |3 ---
arch/powerpc/kernel/setup_32.c | 10
Make use of arch_nvram_ops in the thinkpad_acpi driver so that the
nvram_* function exports can be removed.
This patch series was tested on a ThinkPad T43.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
Acked-by: Henrique de Moraes Holschuh h...@hmh.eng.br
Reviewed-by: Darren Hart
Add the nvram_size() function to those PowerPC platforms that don't already
have one: CHRP and PowerMac. This means that the ppc_md.nvram_size()
function can be used to implement arch_nvram_ops.get_size()
Since we are addressing inconsistencies here, also rename chrp_nvram_read
and
The drivers/char/nvram module has previously only supported RTC CMOS
NVRAM, for which it provides appropriate checksum ioctls. Make these
ioctls optional so the module can be re-used with other kinds of NVRAM.
The ops struct methods that implement the ioctls now return error
codes so that a
Add the powerpc-specific sync() method to struct nvram_ops and implement
the corresponding ioctl in the nvram module. This allows the nvram module
to replace the generic_nvram module.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
On PPC32, the IOC_NVRAM_SYNC ioctl call always returns
And thus eliminate some twisted CONFIG_GENERIC_NVRAM logic.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
drivers/char/Makefile|6 -
drivers/char/generic_nvram.c | 175 ---
2 files changed, 1 insertion(+), 180 deletions(-)
Index:
Switch PPC32 kernels from the generic_nvram module to the nvram module.
Also fix a theoretical bug where CHRP omits the chrp_nvram_init()
call when CONFIG_NVRAM_MODULE=m.
As before, when CONFIG_PPC !CONFIG_PPC_PMAC, the IOC_NVRAM_GET_OFFSET
ioctl is unimplemented. For the nvram module,
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
This is intended to improve code style and not affect code behaviour.
I've tested this on a Quadra 650.
I don't know the meanings of the 4 undocumented write protect register
bits 0x55, so I decided against defining 4 macros for those
Drivers now use the arch_nvram_ops calls so remove the function exports and
prototypes. nvram_check_checksum() is unused so remove it.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
arch/m68k/atari/nvram.c |6 +++---
drivers/char/nvram.c| 27 +--
Adopt nvram module to reduce code duplication.
The IOC_NVRAM_GET_OFFSET ioctl as implemented on PPC64 validates the offset
returned by pmac_get_partition(). Add this test to the nvram module.
Note that the old PPC32 generic_nvram module lacked this test.
So when CONFIG_PPC32 CONFIG_PPC_PMAC,
On Sat, 25 Jul 2015, Michael Schmitz wrote:
Hi Christian,
good to know this worked - for the record (Finn), this is the kernel
with Finn's patch applied.
That was v5 of this patch series. I will send that out to the lists now.
It has some minor changes that relate to powerpc.
Thanks for
On Sat, 25 Jul 2015, Michael Ellerman wrote:
On Sat, 2015-07-25 at 10:35 +1000, Finn Thain wrote:
Thanks for helping with this, Christian. I'll add your name in
Tested-by tags on the relevant patches. These are rudimentary tests
but combined with my own testing on m68k, ppc32 and
Signed-off-by: Finn Thain fth...@telegraphics.com.au
Acked-by: Geert Uytterhoeven ge...@linux-m68k.org
Tested-by: Christian T. Steigies c...@debian.org
---
drivers/char/nvram.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/drivers/char/nvram.c
On powerpc, setting CONFIG_NVRAM=n builds a kernel with no NVRAM support.
Setting CONFIG_NVRAM=m enables the /dev/nvram misc device module without
enabling NVRAM support in drivers. Setting CONFIG_NVRAM=y enables the
misc device (built-in) and also enables NVRAM support in drivers.
m68k shares
Move the m68k-specific code elsewhere to make the driver generic.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
Tested-by: Christian T. Steigies c...@debian.org
---
Changes since v3:
- Move the vmode fix to a separate patch as requested by Geert.
---
arch/m68k/atari/Makefile |2
Different platforms and architectures offer different NVRAM sizes and
access methods. E.g. PPC32 has byte-at-a-time read/write functions whereas
PPC64 has byte-range read/write functions. Adopt the nvram_ops struct so
the nvram module can call such functions as are defined by the various
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
drivers/char/nvram.c |1 +
1 file changed, 1 insertion(+)
Index: linux/drivers/char/nvram.c
===
--- linux.orig/drivers/char/nvram.c 2015-07-25 17:45:35.0
Refactor the RTC CMOS NVRAM functions so that they can be used as
arch_nvram_ops methods. Checksumming logic is moved from the misc device
operations to the nvram read/write operations.
This makes the misc device implementation more generic. This also
preserves the locking semantics such that
Atari RTC NVRAM has a checksum so implement the remaining arch_nvram_ops
methods for the set_checksum and initialize ioctls. Enable
CONFIG_HAVE_ARCH_NVRAM_OPS.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
This re-enables the nvram module for Atari.
Changes since v3:
- Use bool (and
This patch addresses inconsistencies in Mac framebuffer drivers and their
use of Kconfig symbols relating to NVRAM, so PPC64 can use CONFIG_NVRAM.
Macintosh framebuffer drivers use default settings for color mode and
video mode that are found in NVRAM. On PCI Macs, MacOS stores display
settings
Adopt the existing *_read_byte and *_write_byte naming convention.
Rename via_pram_readbyte and via_pram_writebyte to avoid confusion.
Adjust calling conventions of mac_pram_* functions to match the
arch_nvram_ops struct methods.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
Changes
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
Tested on a PowerBook 520 and Quadra 650.
Changes since v2:
- Make use of the RTC_* macros from the previous patch and add a few more
besides.
---
arch/m68k/mac/misc.c | 39 +--
A multi-platform kernel binary needs to decide at run-time how to dispatch
the arch_nvram_ops calls. Add platform-independent arch_nvram_ops, for use
when multiple platform-specific NVRAM ops implementations are needed.
Enable CONFIG_HAVE_ARCH_NVRAM_OPS for Macs.
Signed-off-by: Finn Thain
Make use of arch_nvram_ops in device drivers so that the nvram_* function
exports can be removed.
Since they are no longer global symbols, rename the PPC32 nvram_* functions
appropriately.
Signed-off-by: Finn Thain fth...@telegraphics.com.au
---
Changed since v4:
- Split off the CONFIG_PPC32,
On Fri, 2015-07-24 at 12:15 +0530, Aneesh Kumar K.V wrote:
Michael Ellerman m...@ellerman.id.au writes:
The powerpc kernel can be built to have either a 4K PAGE_SIZE or a 64K
PAGE_SIZE.
...
diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h
b/arch/powerpc/include/asm/pgtable-ppc64.h
Hi,
On 07/20/2015 05:08 PM, Krzysztof Opasiak wrote:
On 07/15/2015 08:32 AM, Robert Baldyga wrote:
Convert endpoint configuration to new capabilities model.
Signed-off-by: Robert Baldyga r.bald...@samsung.com
---
drivers/usb/gadget/udc/pch_udc.c | 14 --
1 file changed, 12
Move all our context switch SPR save and restore code into two
helpers. We do a few optimisations:
- Group all mfsprs and all mtsprs. In many cases an mtspr sets a
scoreboarding bit that an mfspr waits on, so the current practise of
mfspr A; mtspr A; mfpsr B; mtspr B is the worst scheduling we
No need to execute mflr twice.
Signed-off-by: Anton Blanchard an...@samba.org
---
arch/powerpc/kernel/entry_64.S | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 8428280..f8779f2 100644
---
There seems little point in disabling the FP/VMX/VSX MSR bits on
context switch since we don't do it after calling
enable_kernel_altivec() in other places. Writing the MSR is slow
so lets not do it unnecessarily.
A context switch microbenchmark using yield():
Hi Finn,
For the sake of completeness: further testing on ARAnyM shows no
difference between original and patched kernel in the NVRAM proc and
diff outputs:
scsi host0: Atari native SCSI, io_port 0x0, n_io_port 0, base 0x0, irq
15, can_queue 8, cmd_per_lun 1, sg_tablesize 0, this_id 7,
On Sat, 25 Jul 2015, Michael Ellerman wrote:
On Sat, 2015-07-25 at 10:35 +1000, Finn Thain wrote:
... These are rudimentary tests but combined with my own testing on
m68k, ppc32 and x86, coverage is quite good. Some testing on ppc64 is
still lacking though.
Here's some code I wrote
On Sun, 26 Jul 2015, Michael Schmitz wrote:
Hi Finn,
For the sake of completeness: further testing on ARAnyM shows no difference
between original and patched kernel in the NVRAM proc and diff outputs:
scsi host0: Atari native SCSI, io_port 0x0, n_io_port 0, base 0x0, irq 15,
can_queue
Hello linuxppc-dev mailing list!
I come right to the point.
My computer is a Power Mac G4 Quicksilver (original, 2001) with the a flashed
PC graphics card Nvidia 6200 AGP. It is correctly supported in Mac OS X
10.4/10.5 and it was working in Linux with the Debian kernels 3.16. I use
Debian
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