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SubjectRe: [GIT PULL] Renesas SoC updates for v3.4
On 03/09/2012 03:34 PM, Arnd Bergmann wrote:
> On Friday 09 March 2012, Rafael J. Wysocki wrote:
>> Hi,
>>
>> Please pull Renesas SoC updates for v3.4 since commit
>> ce8fea7aa4ad9e3b40999a08622ef27c77159659:
>>
>> mmap: EINVAL not ENOMEM when rejecting VM_GROWS
>>
>> with top-most commit f57fd2100e8273af3a9d2ff67714903d2dfd1eef
>
> Hi Rafael,
>
> Please rebase this on an -rc release, otherwise we get a rather
> messy history in the arm-soc tree.
>
>> ARM: mach-shmobile: default to no earlytimer
>>
>> from the git repository at:
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/rafael/renesas.git soc
>>
>> They include:
>>
>> * The rename of shmobile struct clk_ops to struct sh_clk_ops to avoid
>> possible future name space collision with common struct clk code.
>>
>> This also affects drivers that are shared with the sh architecture,
>> so the branch containing this part of the material, clk_ops-rename,
>> will be merged into the Paul Mundt's sh tree if necessary.
>>
>> * Introduction of L2 Cache support for r8a7779.
>>
>> * Conversion of the mach-shmobile subarch to properly use a per-SoC
>> map_io and separate init_early callback for early serial console
>> support on platforms where that is possible.
>>
>> Magnus Damm is the author of all the changes.
>
> For next time, I think it would be good to make those things separate pull
> requests, since they are all rather big. In particular, the clk rework
> could be a series by itself.
>
> One thing I noticed while browsing through the patches was this hunk
> that Rob should know about:
>
> @@ -242,6 +243,10 @@ static struct platform_device *r8a7779_late_devices[] __initdata = {
>
> void __init r8a7779_add_standard_devices(void)
> {
> +#ifdef CONFIG_CACHE_L2X0
> + /* Early BRESP enable, Shared attribute override enable, 64K*16way */
> + l2x0_init(__io(0xf0100000), 0x40470000, 0x82000fff);
> +#endif
> r8a7779_pm_init();
>
> r8a7779_init_pm_domain(&r8a7779_sh4a);
>
> Here you are abusing the __io() macro rather badly as a typecast. This breaks
> with Rob's series to turn __io(foo) into a NULL pointer for the case where
> PCI is disabled. I found a few more of these, mostly in mach-shmobile but
> also some others:
>
> arnd@klappe2:~/linux-arm$ git grep -w __io arch/arm/mach-* | grep -v __typesafe
> arch/arm/mach-cns3xxx/core.c: gic_init(0, 29, __io(CNS3XXX_TC11MP_GIC_DIST_BASE_VIRT),
> arch/arm/mach-cns3xxx/core.c: __io(CNS3XXX_TC11MP_GIC_CPU_BASE_VIRT));
> arch/arm/mach-cns3xxx/core.c: u32 __iomem *pm_base = __io(CNS3XXX_PM_BASE_VIRT);
> arch/arm/mach-cns3xxx/core.c: cns3xxx_tmr1 = __io(CNS3XXX_TIMER1_2_3_BASE_VIRT);
> arch/arm/mach-cns3xxx/devices.c: u32 __iomem *gpioa = __io(CNS3XXX_MISC_BASE_VIRT + 0x0014);
> arch/arm/mach-netx/generic.c: vic_init(__io(io_p2v(NETX_PA_VIC)), 0, ~0, 0);
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_SYSTEM_REG(ofs) __io(NETX_VA_SYSTEM + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_GPIO_REG(ofs) __io(NETX_VA_GPIO + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_PIO_REG(ofs) __io(NETX_VA_PIO + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_MIIMU __io(NETX_VA_MIIMU)
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_PFIFO_REG(ofs) __io(NETX_VA_PFIFO + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_MEMCR_REG(ofs) __io(NETX_VA_MEMCR + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_DPMAS_REG(ofs) __io(NETX_VA_DPMAS + (ofs))
> arch/arm/mach-netx/include/mach/netx-regs.h:#define NETX_I2C_REG(ofs) __io(NETX_VA_I2C, (ofs))
> arch/arm/mach-realview/include/mach/hardware.h:#define __io_address(n) __io(IO_ADDRESS(n))
> arch/arm/mach-shmobile/board-ag5evm.c: l2x0_init(__io(0xf0100000), 0x00460000, 0xc2000fff);
> arch/arm/mach-shmobile/board-bonito.c: l2x0_init(__io(0xf0002000), 0x40440000, 0x82000fff);
> arch/arm/mach-shmobile/board-kota2.c: l2x0_init(__io(0xf0100000), 0x40460000, 0x82000fff);
> arch/arm/mach-shmobile/include/mach/io.h:#define __io(a) ((void __iomem *)(a))
> arch/arm/mach-shmobile/intc-r8a7779.c: void __iomem *gic_dist_base = __io(0xf0001000);
> arch/arm/mach-shmobile/intc-r8a7779.c: void __iomem *gic_cpu_base = __io(0xf0000100);
> arch/arm/mach-shmobile/intc-sh73a0.c: void __iomem *gic_dist_base = __io(0xf0001000);
> arch/arm/mach-shmobile/intc-sh73a0.c: void __iomem *gic_cpu_base = __io(0xf0000100);
> arch/arm/mach-shmobile/smp-r8a7779.c: __raw_writel(__pa(shmobile_secondary_vector), __io(AVECR));
> arch/arm/mach-shmobile/smp-sh73a0.c: if (((__raw_readl(__io(PSTR)) >> (4 * cpu)) & 3) == 3)
> arch/arm/mach-shmobile/smp-sh73a0.c: __raw_writel(1 << cpu, __io(WUPCR)); /* wake up */
> arch/arm/mach-shmobile/smp-sh73a0.c: __raw_writel(1 << cpu, __io(SRESCR)); /* reset */
> arch/arm/mach-shmobile/smp-sh73a0.c: __raw_writel(0, __io(APARMBAREA)); /* 4k */
> arch/arm/mach-shmobile/smp-sh73a0.c: __raw_writel(__pa(shmobile_secondary_vector), __io(SBAR));
> arch/arm/mach-ux500/include/mach/hardware.h:#define __io_address(n) __io(IO_ADDRESS(n))
>
> These are all broken and need to be changed to something else before we add the
> global definition for __io.

Several platforms define IO_MEM for the purpose of casting the defines
to void __iomem *, so I'll make that common unless you have better
suggestion. I'd guess that changing the defines themselves will cause
lots of warnings in other places.

Rob


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