[PATCH v3 07/62] arm/acpi: Add arch_acpi_os_map_memory helper function for ARM
Stefano Stabellini
stefano.stabellini at eu.citrix.com
Mon Nov 23 03:37:47 PST 2015
On Tue, 17 Nov 2015, shannon.zhao at linaro.org wrote:
> From: Shannon Zhao <shannon.zhao at linaro.org>
Hi Shannon,
could you please add a couple of lines to the commit message mentioning
why __va(phys) is an acceptable implementation of arch_acpi_os_map_memory?
Thanks,
Stefano
> Signed-off-by: Shannon Zhao <shannon.zhao at linaro.org>
> ---
> xen/arch/arm/Makefile | 1 +
> xen/arch/arm/acpi/Makefile | 1 +
> xen/arch/arm/acpi/lib.c | 33 +++++++++++++++++++++++++++++++++
> 3 files changed, 35 insertions(+)
> create mode 100644 xen/arch/arm/acpi/Makefile
> create mode 100644 xen/arch/arm/acpi/lib.c
>
> diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
> index 1ef39f7..1851ae8 100644
> --- a/xen/arch/arm/Makefile
> +++ b/xen/arch/arm/Makefile
> @@ -2,6 +2,7 @@ subdir-$(arm32) += arm32
> subdir-$(arm64) += arm64
> subdir-y += platforms
> subdir-$(arm64) += efi
> +subdir-$(HAS_ACPI) += acpi
>
> obj-$(EARLY_PRINTK) += early_printk.o
> obj-y += cpu.o
> diff --git a/xen/arch/arm/acpi/Makefile b/xen/arch/arm/acpi/Makefile
> new file mode 100644
> index 0000000..b5be22d
> --- /dev/null
> +++ b/xen/arch/arm/acpi/Makefile
> @@ -0,0 +1 @@
> +obj-y += lib.o
> diff --git a/xen/arch/arm/acpi/lib.c b/xen/arch/arm/acpi/lib.c
> new file mode 100644
> index 0000000..b68623b
> --- /dev/null
> +++ b/xen/arch/arm/acpi/lib.c
> @@ -0,0 +1,33 @@
> +/*
> + * lib.c - Architecture-Specific Low-Level ACPI Support
> + *
> + * Copyright (C) 2015, Shannon Zhao <shannon.zhao at linaro.org>
> + *
> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + *
> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> + */
> +
> +#include <xen/acpi.h>
> +#include <xen/mm.h>
> +#include <asm/mm.h>
> +
> +void __iomem *
> +arch_acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
> +{
> + return __va(phys);
> +}
> --
> 2.1.0
>
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