Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux

Pull xtensa updates from Chris Zankel:

 - fix remaining issues with noMMU cores
 - fix build for cores w/o cache or zero overhead loop options
 - fix boot of secondary cores in SMP configuration
 - add support for DMA to high memory pages
 - add dma_to_phys and phys_to_dma functions.

* tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux:
  xtensa: implement dma_to_phys and phys_to_dma
  xtensa: support DMA to high memory
  Revert "xtensa: cache inquiry and unaligned cache handling functions"
  xtensa: drop unused sections and remapped reset handlers
  xtensa: fix secondary core boot in SMP
  xtensa: add FORCE_MAX_ZONEORDER to Kconfig
  xtensa: nommu: provide defconfig for de212 on kc705
  xtensa: nommu: xtfpga: add kc705 DTS
  xtensa: add de212 core variant
  xtensa: nommu: select HAVE_FUTEX_CMPXCHG
  xtensa: nommu: fix default memory start address
  xtensa: nommu: provide correct KIO addresses
  xtensa: nommu: fix USER_RING definition
  xtensa: xtfpga: fix integer overflow in TASK_SIZE
  xtensa: fix build for configs without cache options
  xtensa: fixes for configs without loop option

1 files changed, 8 insertions, 98 deletions

diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
index 5f67ace97b32..397d6a1a4224 100644
--- a/arch/xtensa/include/asm/cacheflush.h
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -55,9 +55,14 @@ extern void __flush_dcache_range(unsigned long, unsigned long);
 extern void __flush_invalidate_dcache_page(unsigned long);
 extern void __flush_invalidate_dcache_range(unsigned long, unsigned long);
 #else
-# define __flush_dcache_range(p,s)		do { } while(0)
-# define __flush_dcache_page(p)			do { } while(0)
-# define __flush_invalidate_dcache_page(p) 	__invalidate_dcache_page(p)
+static inline void __flush_dcache_page(unsigned long va)
+{
+}
+static inline void __flush_dcache_range(unsigned long va, unsigned long sz)
+{
+}
+# define __flush_invalidate_dcache_all()	__invalidate_dcache_all()
+# define __flush_invalidate_dcache_page(p)	__invalidate_dcache_page(p)
 # define __flush_invalidate_dcache_range(p,s)	__invalidate_dcache_range(p,s)
 #endif
 
@@ -174,99 +179,4 @@ extern void copy_from_user_page(struct vm_area_struct*, struct page*,
 
 #endif
 
-#define XTENSA_CACHEBLK_LOG2	29
-#define XTENSA_CACHEBLK_SIZE	(1 << XTENSA_CACHEBLK_LOG2)
-#define XTENSA_CACHEBLK_MASK	(7 << XTENSA_CACHEBLK_LOG2)
-
-#if XCHAL_HAVE_CACHEATTR
-static inline u32 xtensa_get_cacheattr(void)
-{
-	u32 r;
-	asm volatile("	rsr %0, cacheattr" : "=a"(r));
-	return r;
-}
-
-static inline u32 xtensa_get_dtlb1(u32 addr)
-{
-	u32 r = addr & XTENSA_CACHEBLK_MASK;
-	return r | ((xtensa_get_cacheattr() >> (r >> (XTENSA_CACHEBLK_LOG2-2)))
-			& 0xF);
-}
-#else
-static inline u32 xtensa_get_dtlb1(u32 addr)
-{
-	u32 r;
-	asm volatile("	rdtlb1 %0, %1" : "=a"(r) : "a"(addr));
-	asm volatile("	dsync");
-	return r;
-}
-
-static inline u32 xtensa_get_cacheattr(void)
-{
-	u32 r = 0;
-	u32 a = 0;
-	do {
-		a -= XTENSA_CACHEBLK_SIZE;
-		r = (r << 4) | (xtensa_get_dtlb1(a) & 0xF);
-	} while (a);
-	return r;
-}
-#endif
-
-static inline int xtensa_need_flush_dma_source(u32 addr)
-{
-	return (xtensa_get_dtlb1(addr) & ((1 << XCHAL_CA_BITS) - 1)) >= 4;
-}
-
-static inline int xtensa_need_invalidate_dma_destination(u32 addr)
-{
-	return (xtensa_get_dtlb1(addr) & ((1 << XCHAL_CA_BITS) - 1)) != 2;
-}
-
-static inline void flush_dcache_unaligned(u32 addr, u32 size)
-{
-	u32 cnt;
-	if (size) {
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			+ XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt--) {
-			asm volatile("	dhwb %0, 0" : : "a"(addr));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dsync");
-	}
-}
-
-static inline void invalidate_dcache_unaligned(u32 addr, u32 size)
-{
-	int cnt;
-	if (size) {
-		asm volatile("	dhwbi %0, 0 ;" : : "a"(addr));
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			- XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt-- > 0) {
-			asm volatile("	dhi %0, %1" : : "a"(addr),
-						"n"(XCHAL_DCACHE_LINESIZE));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dhwbi %0, %1" : : "a"(addr),
-						"n"(XCHAL_DCACHE_LINESIZE));
-		asm volatile("	dsync");
-	}
-}
-
-static inline void flush_invalidate_dcache_unaligned(u32 addr, u32 size)
-{
-	u32 cnt;
-	if (size) {
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			+ XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt--) {
-			asm volatile("	dhwbi %0, 0" : : "a"(addr));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dsync");
-	}
-}
-
 #endif /* _XTENSA_CACHEFLUSH_H */