From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-iop13xx/include/mach/memory.h | 67 ++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 kernel/arch/arm/mach-iop13xx/include/mach/memory.h (limited to 'kernel/arch/arm/mach-iop13xx/include/mach/memory.h') diff --git a/kernel/arch/arm/mach-iop13xx/include/mach/memory.h b/kernel/arch/arm/mach-iop13xx/include/mach/memory.h new file mode 100644 index 000000000..59307e787 --- /dev/null +++ b/kernel/arch/arm/mach-iop13xx/include/mach/memory.h @@ -0,0 +1,67 @@ +#ifndef __ASM_ARCH_MEMORY_H +#define __ASM_ARCH_MEMORY_H + +#include + +#ifndef __ASSEMBLY__ + +#if defined(CONFIG_ARCH_IOP13XX) +#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE) +#define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE) +#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE) +#define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE) + +static inline dma_addr_t __virt_to_lbus(void __iomem *x) +{ + return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; +} + +static inline void __iomem *__lbus_to_virt(dma_addr_t x) +{ + return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE; +} + +#define __is_lbus_dma(a) \ + ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END) + +#define __is_lbus_virt(a) \ + ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END) + +/* Device is an lbus device if it is on the platform bus of the IOP13XX */ +#define is_lbus_device(dev) \ + (dev && strncmp(dev->bus->name, "platform", 8) == 0) + +#define __arch_dma_to_virt(dev, addr) \ + ({ \ + void * __virt; \ + dma_addr_t __dma = addr; \ + if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \ + __virt = __lbus_to_virt(__dma); \ + else \ + __virt = (void *)__phys_to_virt(__dma); \ + __virt; \ + }) + +#define __arch_virt_to_dma(dev, addr) \ + ({ \ + void * __virt = addr; \ + dma_addr_t __dma; \ + if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ + __dma = __virt_to_lbus(__virt); \ + else \ + __dma = __virt_to_phys((unsigned long)__virt); \ + __dma; \ + }) + +#define __arch_pfn_to_dma(dev, pfn) \ + ({ \ + /* __is_lbus_virt() can never be true for RAM pages */ \ + (dma_addr_t)__pfn_to_phys(pfn); \ + }) + +#define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr) + +#endif /* CONFIG_ARCH_IOP13XX */ +#endif /* !ASSEMBLY */ + +#endif -- cgit 1.2.3-korg