From mboxrd@z Thu Jan 1 00:00:00 1970 From: shannon.zhao@linaro.org (shannon.zhao at linaro.org) Date: Tue, 17 Nov 2015 17:40:46 +0800 Subject: [PATCH v3 47/62] arm/p2m: Add helper functions to map memory regions In-Reply-To: <1447753261-7552-1-git-send-email-shannon.zhao@linaro.org> References: <1447753261-7552-1-git-send-email-shannon.zhao@linaro.org> Message-ID: <1447753261-7552-48-git-send-email-shannon.zhao@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Parth Dixit Create a helper function for mapping with cached attributes. Signed-off-by: Parth Dixit Signed-off-by: Shannon Zhao --- xen/arch/arm/p2m.c | 26 ++++++++++++++++++++++++++ xen/include/asm-arm/p2m.h | 10 ++++++++++ 2 files changed, 36 insertions(+) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index e396c40..7a108d8 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -1140,6 +1140,32 @@ int p2m_populate_ram(struct domain *d, d->arch.p2m.default_access); } +int map_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr, + unsigned long mfn) +{ + return apply_p2m_changes(d, INSERT, + pfn_to_paddr(start_gfn), + pfn_to_paddr(start_gfn + nr), + pfn_to_paddr(mfn), + MATTR_MEM, 0, p2m_mmio_direct, + d->arch.p2m.default_access); +} + +int unmap_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr, + unsigned long mfn) +{ + return apply_p2m_changes(d, REMOVE, + pfn_to_paddr(start_gfn), + pfn_to_paddr(start_gfn + nr), + pfn_to_paddr(mfn), + MATTR_MEM, 0, p2m_invalid, + d->arch.p2m.default_access); +} + int map_mmio_regions(struct domain *d, unsigned long start_gfn, unsigned long nr, diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h index 08bdce3..b6215f9 100644 --- a/xen/include/asm-arm/p2m.h +++ b/xen/include/asm-arm/p2m.h @@ -158,6 +158,16 @@ int p2m_cache_flush(struct domain *d, xen_pfn_t start_mfn, xen_pfn_t end_mfn); /* Setup p2m RAM mapping for domain d from start-end. */ int p2m_populate_ram(struct domain *d, paddr_t start, paddr_t end); +int map_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr_mfns, + unsigned long mfn); + +int unmap_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr_mfns, + unsigned long mfn); + int guest_physmap_add_entry(struct domain *d, unsigned long gfn, unsigned long mfn, -- 2.1.0