diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:28 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:04 +1100 |
| commit | 31f940afda6add7a7bb182adde97e615e5355c6d (patch) | |
| tree | 0133b5ca9bc0889985dc3c4021fa3268e97ae6ea /arch/powerpc/mm/mem.c | |
| parent | feee96440c9c5fdf47f8c8079c104fc8082924a0 (diff) | |
| download | linux-31f940afda6add7a7bb182adde97e615e5355c6d.tar.gz | |
powerpc/dma: use the dma-direct allocator for coherent platforms
The generic code allows a few nice things such as node local allocations
and dipping into the CMA area. The lookup of the right zone for a given
dma mask works a little different, but the results should be the same.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 33cc6f676fa62..a10ee3645a6c8 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -69,15 +69,12 @@ pte_t *kmap_pte; EXPORT_SYMBOL(kmap_pte); pgprot_t kmap_prot; EXPORT_SYMBOL(kmap_prot); -#define TOP_ZONE ZONE_HIGHMEM static inline pte_t *virt_to_kpte(unsigned long vaddr) { return pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), vaddr), vaddr), vaddr); } -#else -#define TOP_ZONE ZONE_NORMAL #endif int page_is_ram(unsigned long pfn) @@ -262,25 +259,6 @@ static int __init mark_nonram_nosave(void) static unsigned long max_zone_pfns[MAX_NR_ZONES]; /* - * Find the least restrictive zone that is entirely below the - * specified pfn limit. Returns < 0 if no suitable zone is found. - * - * pfn_limit must be u64 because it can exceed 32 bits even on 32-bit - * systems -- the DMA limit can be higher than any possible real pfn. - */ -int dma_pfn_limit_to_zone(u64 pfn_limit) -{ - int i; - - for (i = TOP_ZONE; i >= 0; i--) { - if (max_zone_pfns[i] <= pfn_limit) - return i; - } - - return -EPERM; -} - -/* * paging_init() sets up the page tables - in fact we've already done this. */ void __init paging_init(void) |