From: Christoph Müllner christoph.muellner@theobroma-systems.com
Some machines have limited DMA engines, which cannot deal with arbitrary addresses. This patch introduces a function to model these restrictions on a machine level.
Signed-off-by: Christoph Müllner christoph.muellner@theobroma-systems.com Signed-off-by: Christoph Muellner christoph.muellner@theobroma-systems.com ---
Changes in v2: None
common/board_f.c | 5 +++++ include/init.h | 2 ++ 2 files changed, 7 insertions(+)
diff --git a/common/board_f.c b/common/board_f.c index 7ef20f2042..92dc34d2d8 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -1053,3 +1053,8 @@ void board_init_f_r(void) hang(); } #endif /* CONFIG_X86 */ + +__weak int mach_addr_is_dmaable(void __iomem *ptr) +{ + return 1; +} diff --git a/include/init.h b/include/init.h index afc953d51e..1653d5086f 100644 --- a/include/init.h +++ b/include/init.h @@ -125,6 +125,8 @@ int misc_init_f(void); int embedded_dtb_select(void); #endif
+int mach_addr_is_dmaable(void __iomem *ptr); + /* common/init/board_init.c */ extern ulong monitor_flash_len;