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[openwrt/staging/yousong.git] / package / boot / uboot-layerscape / patches / 0016-ARM-asm-types-Introduce-DMA_ADDR_T_64BIT.patch

diff --git a/package/boot/uboot-layerscape/patches/0016-ARM-asm-types-Introduce-DMA_ADDR_T_64BIT.patch b/package/boot/uboot-layerscape/patches/0016-ARM-asm-types-Introduce-DMA_ADDR_T_64BIT.patch
deleted file mode 100644 (file)
index 7f39efc..0000000
--- a/package/boot/uboot-layerscape/patches/0016-ARM-asm-types-Introduce-DMA_ADDR_T_64BIT.patch
+++ /dev/null
@@ -1,80 +0,0 @@
-From 4aa3d79020aeca3780ea113a495d18662d593761 Mon Sep 17 00:00:00 2001
-From: Lokesh Vutla <lokeshvutla@ti.com>
-Date: Thu, 24 Mar 2016 16:02:00 +0530
-Subject: [PATCH 16/93] ARM: asm: types: Introduce DMA_ADDR_T_64BIT
-
-dma_addr_t holds any valid DMA address. If the DMA API only uses 32-bit
-addresses, dma_addr_t need only be 32 bits wide.  Bus addresses, e.g., PCI BARs,
-may be wider than 32 bits, but drivers do memory-mapped I/O to ioremapped
-kernel virtual addresses, so they don't care about the size of the actual
-bus addresses.
-Also 32 bit ARM systems with LPAE enabled can use 64bit address space, but
-DMA still use 32bit address like in case of DRA7 and Keystone platforms.
-
-This is inspired from the Linux kernel types implementation[1]
-
-[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/linux/types.h#n142
-
-Acked-by: Lukasz Majewski <l.majewski@samsung.com>
-Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
-Reviewed-by: Tom Rini <trini@konsulko.com>
-Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
----
- arch/arm/Kconfig             |    4 ++++
- arch/arm/include/asm/types.h |   17 +++++++++++++++--
- 2 files changed, 19 insertions(+), 2 deletions(-)
-
-diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
-index 5c20801..b536684 100644
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -7,6 +7,10 @@ config SYS_ARCH
- config ARM64
-       bool
- 
-+config DMA_ADDR_T_64BIT
-+      bool
-+      default y if ARM64
-+
- config HAS_VBAR
-         bool
- 
-diff --git a/arch/arm/include/asm/types.h b/arch/arm/include/asm/types.h
-index 388058e..d108915 100644
---- a/arch/arm/include/asm/types.h
-+++ b/arch/arm/include/asm/types.h
-@@ -46,16 +46,29 @@ typedef unsigned long long u64;
- #endif        /* CONFIG_ARM64 */
- 
- #ifdef CONFIG_PHYS_64BIT
--typedef unsigned long long dma_addr_t;
- typedef unsigned long long phys_addr_t;
- typedef unsigned long long phys_size_t;
- #else
- /* DMA addresses are 32-bits wide */
--typedef u32 dma_addr_t;
- typedef unsigned long phys_addr_t;
- typedef unsigned long phys_size_t;
- #endif
- 
-+/*
-+ * A dma_addr_t can hold any valid DMA address, i.e., any address returned
-+ * by the DMA API.
-+ *
-+ * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
-+ * bits wide.  Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
-+ * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
-+ * so they don't care about the size of the actual bus addresses.
-+ */
-+#ifdef CONFIG_DMA_ADDR_T_64BIT
-+typedef unsigned long long dma_addr_t;
-+#else
-+typedef u32 dma_addr_t;
-+#endif
-+
- #endif /* __KERNEL__ */
- 
- typedef unsigned long resource_size_t;
--- 
-1.7.9.5
-