android_kernel_motorola_sm6225/arch/arm/xen
Stefano Stabellini 1b65c4e5a9 swiotlb-xen: use xen_alloc/free_coherent_pages
Use xen_alloc_coherent_pages and xen_free_coherent_pages to allocate or
free coherent pages.

We need to be careful handling the pointer returned by
xen_alloc_coherent_pages, because on ARM the pointer is not equal to
phys_to_virt(*dma_handle). In fact virt_to_phys only works for kernel
direct mapped RAM memory.
In ARM case the pointer could be an ioremap address, therefore passing
it to virt_to_phys would give you another physical address that doesn't
correspond to it.

Make xen_create_contiguous_region take a phys_addr_t as start parameter to
avoid the virt_to_phys calls which would be incorrect.

Changes in v6:
- remove extra spaces.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-10-10 13:41:10 +00:00
..
enlighten.c Linux 3.11-rc7 2013-09-09 12:05:37 -04:00
grant-table.c xen: grant: use xen_pfn_t type for frame_list. 2012-10-19 15:17:55 -04:00
hypercall.S xen/arm and xen/arm64: implement HYPERVISOR_tmem_op 2013-07-04 11:41:12 +00:00
Makefile xen/arm,arm64: enable SWIOTLB_XEN 2013-10-10 13:40:44 +00:00
mm.c swiotlb-xen: use xen_alloc/free_coherent_pages 2013-10-10 13:41:10 +00:00
p2m.c arm/xen,arm64/xen: introduce p2m 2013-10-17 16:22:27 +00:00