diff options
Diffstat (limited to 'arch/powerpc/include/asm/page.h')
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index ed870468ef6f..0d52f57fca04 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -1,13 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _ASM_POWERPC_PAGE_H #define _ASM_POWERPC_PAGE_H /* * Copyright (C) 2001,2005 IBM Corporation. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef __ASSEMBLY__ @@ -28,11 +24,15 @@ #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) #ifndef __ASSEMBLY__ -#ifdef CONFIG_HUGETLB_PAGE -extern bool hugetlb_disabled; -extern unsigned int HPAGE_SHIFT; -#else +#ifndef CONFIG_HUGETLB_PAGE #define HPAGE_SHIFT PAGE_SHIFT +#elif defined(CONFIG_PPC_BOOK3S_64) +extern unsigned int hpage_shift; +#define HPAGE_SHIFT hpage_shift +#elif defined(CONFIG_PPC_8xx) +#define HPAGE_SHIFT 19 /* 512k pages */ +#elif defined(CONFIG_PPC_FSL_BOOK3E) +#define HPAGE_SHIFT 22 /* 4M pages */ #endif #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) @@ -132,18 +132,7 @@ static inline bool pfn_valid(unsigned long pfn) #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#ifdef CONFIG_PPC_BOOK3S_64 -/* - * On hash the vmalloc and other regions alias to the kernel region when passed - * through __pa(), which virt_to_pfn() uses. That means virt_addr_valid() can - * return true for some vmalloc addresses, which is incorrect. So explicitly - * check that the address is in the kernel region. - */ -#define virt_addr_valid(kaddr) (REGION_ID(kaddr) == KERNEL_REGION_ID && \ - pfn_valid(virt_to_pfn(kaddr))) -#else #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) -#endif /* * On Book-E parts we need __va to parse the device tree and we can't @@ -330,6 +319,13 @@ struct vm_area_struct; #endif /* __ASSEMBLY__ */ #include <asm/slice.h> +/* + * Allow 30-bit DMA for very limited Broadcom wifi chips on many powerbooks. + */ +#ifdef CONFIG_PPC32 +#define ARCH_ZONE_DMA_BITS 30 +#else #define ARCH_ZONE_DMA_BITS 31 +#endif #endif /* _ASM_POWERPC_PAGE_H */ |