linux-kernel - Re: [PATCH v2 3/9] ARM: msm: Move debug-macro.S to include/debug

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Message-ID: <20130730215307.GG8868@codeaurora.org>
Date:	Tue, 30 Jul 2013 14:53:07 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	David Brown <davidb@...eaurora.org>, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 3/9] ARM: msm: Move debug-macro.S to include/debug

On 07/30, Russell King - ARM Linux wrote:
> On Wed, Jul 24, 2013 at 01:54:28PM -0700, Stephen Boyd wrote:
> > One more step to allowing MSM to participate in the
> > multi-platform defconfig.
> > 
> > Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
> > ---
> >  arch/arm/Kconfig.debug                             |  9 +++-
> >  .../mach/debug-macro.S => include/debug/msm.S}     | 32 ++++++++++-
> >  arch/arm/mach-msm/include/mach/msm_iomap-8960.h    |  5 --
> >  arch/arm/mach-msm/include/mach/msm_iomap-8x60.h    |  5 --
> >  arch/arm/mach-msm/include/mach/msm_iomap.h         | 12 -----
> >  arch/arm/mach-msm/include/mach/uncompress.h        | 63 ----------------------
> >  arch/arm/mach-msm/io.c                             | 40 +++++++-------
> >  7 files changed, 58 insertions(+), 108 deletions(-)
> >  rename arch/arm/{mach-msm/include/mach/debug-macro.S => include/debug/msm.S} (61%)
> >  delete mode 100644 arch/arm/mach-msm/include/mach/uncompress.h
> > 
> > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> > index e401a76..4a62a8d 100644
> > --- a/arch/arm/Kconfig.debug
> > +++ b/arch/arm/Kconfig.debug
> > @@ -777,6 +777,11 @@ config DEBUG_LL_INCLUDE
> >  				 DEBUG_IMX6SL_UART
> >  	default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \
> >  				      DEBUG_KEYSTONE_UART1
> > +	default "debug/msm.S" if DEBUG_MSM_UART1 || \
> > +				 DEBUG_MSM_UART2 || \
> > +				 DEBUG_MSM_UART3 || \
> > +				 DEBUG_MSM8660_UART || \
> > +				 DEBUG_MSM8960_UART
> >  	default "debug/mvebu.S" if DEBUG_MVEBU_UART || \
> >  				   DEBUG_MVEBU_UART_ALTERNATE
> >  	default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART
> > @@ -804,13 +809,13 @@ config DEBUG_LL_INCLUDE
> >  
> >  config DEBUG_UNCOMPRESS
> >  	bool
> > -	default y if ARCH_MULTIPLATFORM && DEBUG_LL && \
> > +	default y if (ARCH_MULTIPLATFORM || ARCH_MSM) && DEBUG_LL && \
> >  		     !DEBUG_OMAP2PLUS_UART && \
> >  		     !DEBUG_TEGRA_UART
> >  
> >  config UNCOMPRESS_INCLUDE
> >  	string
> > -	default "debug/uncompress.h" if ARCH_MULTIPLATFORM
> > +	default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM
> >  	default "mach/uncompress.h"
> 
> I hope the above two aren't going to grow.

>From what I can tell we should convert everyone over to this so
that they don't have to put almost exactly the same code in the
uncompress.h as they put in their debug-macro.S

> 
> >  	{
> >  		.virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
> >  		.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
> >  		.length =   MSM_SHARED_RAM_SIZE,
> >  		.type =     MT_DEVICE,
> >  	},
> 
> A comment here mentioning that the below must be the last entry would
> probably be a good idea as you overwrite the virtual/pfn members of this
> last entry.

I thought the comment there was sufficient. I'll add "must be
last" to be more explicit.

> 
> > +#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
> > +		defined(CONFIG_DEBUG_MSM_UART3)
> > +	{
> > +		/* virtual and pfn filled in by debug_ll_addr() */
> > +		.length = SZ_4K,
> > +		.type = MT_DEVICE_NONSHARED,
> > +	}
> > +#endif

David can you fold this in?

---8<-----
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 5f1b0aa..adc8971 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -60,7 +60,7 @@ static struct map_desc msm_io_desc[] __initdata = {
 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
 		defined(CONFIG_DEBUG_MSM_UART3)
 	{
-		/* virtual and pfn filled in by debug_ll_addr() */
+		/* Must be last: virtual and pfn filled in by debug_ll_addr() */
 		.length = SZ_4K,
 		.type = MT_DEVICE_NONSHARED,
 	}

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