From cb84c2b401d9cead5508cfed57b59b6d5feffdac Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 9 Dec 2014 14:21:45 -0800 Subject: hexagon: Fix build failures in linux-next hexagon:defconfig fails to build in linux-next since commit 332fd7c4fef5 ("genirq: Generic chip: Change irq_reg_{readl,writel} arguments"). The primary build failure is arch/hexagon/include/asm/cacheflush.h: In function 'copy_to_user_page': arch/hexagon/include/asm/cacheflush.h:89:22: error: 'VM_EXEC' undeclared This is the result of including of from , which is now necessary due to the use of readl and writel from irq.h. This causes recursive inclusions in hexagon code; cacheflush.h is included from mm.h prior to the definition of VM_EXEC. Fix the problem by moving copy_to_user_page from the hexagon include file to arch/hexagon/mm/cache.c, similar to other architectures. After this change, several redefinitions of readl and writel are reported. Those are caused by recursive inclusions of io.h and asm/cacheflush.h. Fix those problems by reducing the number of files included from those files. Also, it was necessary to stop including asm-generic/cacheflush.h from asm/cacheflush.h. Instead, functionality originally provided by asm-generic/cacheflush.h is now coded in asm/cacheflush.h directly. Cc: Kevin Cernekee Cc: Jason Cooper Signed-off-by: Guenter Roeck signed-off-by: Richard Kuo --- arch/hexagon/include/asm/cacheflush.h | 36 ++++++++++++++++++----------------- arch/hexagon/include/asm/io.h | 5 ----- arch/hexagon/kernel/setup.c | 1 + arch/hexagon/mm/cache.c | 10 ++++++++++ arch/hexagon/mm/ioremap.c | 1 + 5 files changed, 31 insertions(+), 22 deletions(-) diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h index 49e0896ec240..b86f9f300e94 100644 --- a/arch/hexagon/include/asm/cacheflush.h +++ b/arch/hexagon/include/asm/cacheflush.h @@ -21,10 +21,7 @@ #ifndef _ASM_CACHEFLUSH_H #define _ASM_CACHEFLUSH_H -#include -#include -#include -#include +#include /* Cache flushing: * @@ -41,6 +38,20 @@ #define LINESIZE 32 #define LINEBITS 5 +#define flush_cache_all() do { } while (0) +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_dup_mm(mm) do { } while (0) +#define flush_cache_range(vma, start, end) do { } while (0) +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 +#define flush_dcache_page(page) do { } while (0) +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) +#define flush_icache_page(vma, pg) do { } while (0) +#define flush_icache_user_range(vma, pg, adr, len) do { } while (0) +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + /* * Flush Dcache range through current map. */ @@ -49,7 +60,6 @@ extern void flush_dcache_range(unsigned long start, unsigned long end); /* * Flush Icache range through current map. */ -#undef flush_icache_range extern void flush_icache_range(unsigned long start, unsigned long end); /* @@ -79,19 +89,11 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, /* generic_ptrace_pokedata doesn't wind up here, does it? */ } -#undef copy_to_user_page -static inline void copy_to_user_page(struct vm_area_struct *vma, - struct page *page, - unsigned long vaddr, - void *dst, void *src, int len) -{ - memcpy(dst, src, len); - if (vma->vm_flags & VM_EXEC) { - flush_icache_range((unsigned long) dst, - (unsigned long) dst + len); - } -} +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, void *src, int len); +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) extern void hexagon_inv_dcache_range(unsigned long start, unsigned long end); extern void hexagon_clean_dcache_range(unsigned long start, unsigned long end); diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h index 70298996e9b2..66f5e9a61efc 100644 --- a/arch/hexagon/include/asm/io.h +++ b/arch/hexagon/include/asm/io.h @@ -24,14 +24,9 @@ #ifdef __KERNEL__ #include -#include -#include -#include -#include #include #include #include -#include /* * We don't have PCI yet. diff --git a/arch/hexagon/kernel/setup.c b/arch/hexagon/kernel/setup.c index 0e7c1dbb37b2..6981949f5df3 100644 --- a/arch/hexagon/kernel/setup.c +++ b/arch/hexagon/kernel/setup.c @@ -19,6 +19,7 @@ */ #include +#include #include #include #include diff --git a/arch/hexagon/mm/cache.c b/arch/hexagon/mm/cache.c index 0c76c802e31c..a7c6d827d8b6 100644 --- a/arch/hexagon/mm/cache.c +++ b/arch/hexagon/mm/cache.c @@ -127,3 +127,13 @@ void flush_cache_all_hexagon(void) local_irq_restore(flags); mb(); } + +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, void *src, int len) +{ + memcpy(dst, src, len); + if (vma->vm_flags & VM_EXEC) { + flush_icache_range((unsigned long) dst, + (unsigned long) dst + len); + } +} diff --git a/arch/hexagon/mm/ioremap.c b/arch/hexagon/mm/ioremap.c index 5905fd5f97f6..d27d67224046 100644 --- a/arch/hexagon/mm/ioremap.c +++ b/arch/hexagon/mm/ioremap.c @@ -20,6 +20,7 @@ #include #include +#include void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size) { -- cgit v1.2.3-58-ga151 From f6b708c19d6f1791ccfbb20543c64466ef7a5f83 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Tue, 8 Apr 2014 19:00:45 -0500 Subject: Hexagon: fix alignment of init_task in RW_DATA_SECTION Signed-off-by: Richard Kuo --- arch/hexagon/kernel/vmlinux.lds.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/hexagon/kernel/vmlinux.lds.S b/arch/hexagon/kernel/vmlinux.lds.S index 44d8c47bae2f..5f268c1071b3 100644 --- a/arch/hexagon/kernel/vmlinux.lds.S +++ b/arch/hexagon/kernel/vmlinux.lds.S @@ -1,7 +1,7 @@ /* * Linker script for Hexagon kernel * - * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. + * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -59,7 +59,7 @@ SECTIONS INIT_DATA_SECTION(PAGE_SIZE) _sdata = .; - RW_DATA_SECTION(32,PAGE_SIZE,PAGE_SIZE) + RW_DATA_SECTION(32,PAGE_SIZE,_THREAD_SIZE) RO_DATA_SECTION(PAGE_SIZE) _edata = .; -- cgit v1.2.3-58-ga151 From ea0f1b92150fb368d26e38c0a0e9ab244b95be03 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Tue, 15 Apr 2014 15:41:17 -0500 Subject: Hexagon: set ARCH_DMA_MINALIGN Signed-off-by: Richard Kuo --- arch/hexagon/include/asm/cache.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h index 263511719a4a..69952c184207 100644 --- a/arch/hexagon/include/asm/cache.h +++ b/arch/hexagon/include/asm/cache.h @@ -1,7 +1,7 @@ /* * Cache definitions for the Hexagon architecture * - * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. + * Copyright (c) 2010-2011,2014 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -25,6 +25,8 @@ #define L1_CACHE_SHIFT (5) #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#define ARCH_DMA_MINALIGN L1_CACHE_BYTES + #define __cacheline_aligned __aligned(L1_CACHE_BYTES) #define ____cacheline_aligned __aligned(L1_CACHE_BYTES) -- cgit v1.2.3-58-ga151 From 8914d7e857807e1e60975000cba3750c9b2643e8 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Mon, 8 Dec 2014 15:36:20 -0600 Subject: Hexagon: fix signal delivery for debug traps Signed-off-by: Richard Kuo --- arch/hexagon/kernel/traps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/hexagon/kernel/traps.c b/arch/hexagon/kernel/traps.c index 7858663352b9..110dab152f82 100644 --- a/arch/hexagon/kernel/traps.c +++ b/arch/hexagon/kernel/traps.c @@ -1,7 +1,7 @@ /* * Kernel traps/events for Hexagon processor * - * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. + * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -423,7 +423,7 @@ void do_trap0(struct pt_regs *regs) */ info.si_code = TRAP_BRKPT; info.si_addr = (void __user *) pt_elr(regs); - send_sig_info(SIGTRAP, &info, current); + force_sig_info(SIGTRAP, &info, current); } else { #ifdef CONFIG_KGDB kgdb_handle_exception(pt_cause(regs), SIGTRAP, -- cgit v1.2.3-58-ga151