Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (27 commits)
  Blackfin: fix dma-mapping build errors
  Blackfin: hook up new perf_counter_open syscall
  Blackfin: drop BF535-specific text for exception 0x2A (unaligned instruction)
  Blackfin: fix early crash when booting on wrong cpu
  Blackfin: fix GPTMR0_CLOCKSOURCE dependency on BFIN_GPTIMERS
  Blackfin: drop unused ISP1760 port1_disable from board resources
  Blackfin: bf526-ezbrd: handle different SDRAM chips
  Blackfin: fix typo in TRAS define in mem_init.h header
  Blackfin: unify memory map headers
  Blackfin: stick the CPU name into boot image name
  Blackfin: update defconfigs
  Blackfin: decouple unrelated cache settings to get exact behavior
  Blackfin: update I-pipe patch level
  Blackfin: remove obsolete mcount support from I-pipe code
  Blackfin: allow CONFIG_TICKSOURCE_GPTMR0 with interrupt pipeline
  Blackfin: convert interrupt pipeline to irqflags
  Blackfin: allow people to select BF51x-0.1 silicon rev
  Blackfin: bf526-ezbrd: set SPI flash resources to SST device
  Blackfin: fix accidental reset in some boot modes
  Blackfin: abstract irq14 lowering in do_irq
  ...

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
index 8894e9f..2f469a1 100644
--- a/arch/blackfin/include/asm/uaccess.h
+++ b/arch/blackfin/include/asm/uaccess.h
@@ -265,4 +265,26 @@ __clear_user(void *to, unsigned long n)
 
 #define clear_user(to, n) __clear_user(to, n)
 
+/* How to interpret these return values:
+ *	CORE:      can be accessed by core load or dma memcpy
+ *	CORE_ONLY: can only be accessed by core load
+ *	DMA:       can only be accessed by dma memcpy
+ *	IDMA:      can only be accessed by interprocessor dma memcpy (BF561)
+ *	ITEST:     can be accessed by isram memcpy or dma memcpy
+ */
+enum {
+	BFIN_MEM_ACCESS_CORE = 0,
+	BFIN_MEM_ACCESS_CORE_ONLY,
+	BFIN_MEM_ACCESS_DMA,
+	BFIN_MEM_ACCESS_IDMA,
+	BFIN_MEM_ACCESS_ITEST,
+};
+/**
+ *	bfin_mem_access_type() - what kind of memory access is required
+ *	@addr:   the address to check
+ *	@size:   number of bytes needed
+ *	@return: <0 is error, >=0 is BFIN_MEM_ACCESS_xxx enum (see above)
+ */
+int bfin_mem_access_type(unsigned long addr, unsigned long size);
+
 #endif				/* _BLACKFIN_UACCESS_H */