From b2d6b9fb35bf670df8049f0b3d4d306bf2d454da Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 27 Mar 2006 19:52:14 +0000 Subject: [PARISC] EISA regions must be mapped NO_CACHE Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin --- arch/parisc/mm/ioremap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/parisc/mm') diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c index 0db12818d7bc..27384567a1d0 100644 --- a/arch/parisc/mm/ioremap.c +++ b/arch/parisc/mm/ioremap.c @@ -2,7 +2,7 @@ * arch/parisc/mm/ioremap.c * * (C) Copyright 1995 1996 Linus Torvalds - * (C) Copyright 2001 Helge Deller + * (C) Copyright 2001-2006 Helge Deller * (C) Copyright 2005 Kyle McMartin */ @@ -138,6 +138,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l if ((phys_addr >= 0x00080000 && end < 0x000fffff) || (phys_addr >= 0x00500000 && end < 0x03bfffff)) { phys_addr |= F_EXTEND(0xfc000000); + flags |= _PAGE_NO_CACHE; } #endif -- cgit v1.2.2 From 67a5a59d3301949f51f2d617d689f005c6d21470 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 27 Mar 2006 19:52:14 +0000 Subject: [PARISC] Misc. janitorial work Fix a spelling mistake, add a KERN_INFO flag, and fix some whitespace uglies. Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin --- arch/parisc/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/parisc/mm') diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index 0ad945d4c0a4..64785e46f93b 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -186,7 +186,7 @@ good_area: break; case VM_FAULT_SIGBUS: /* - * We hit a hared mapping outside of the file, or some + * We hit a shared mapping outside of the file, or some * other thing happened to us that made us unable to * handle the page fault gracefully. */ -- cgit v1.2.2 From 2fd83038160531245099c3c5b3511fa4b80765eb Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Thu, 20 Apr 2006 20:40:23 +0000 Subject: [PARISC] Further work for multiple page sizes More work towards supporing multiple page sizes on 64-bit. Convert some assumptions that 64bit uses 3 level page tables into testing PT_NLEVELS. Also some BUG() to BUG_ON() conversions and some cleanups to assembler. Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin --- arch/parisc/mm/init.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) (limited to 'arch/parisc/mm') diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 3796be67cd53..631712562656 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -6,6 +6,7 @@ * changed by Philipp Rumpf * Copyright 1999 Philipp Rumpf (prumpf@tux.org) * Copyright 2004 Randolph Chung (tausq@debian.org) + * Copyright 2006 Helge Deller (deller@gmx.de) * */ @@ -371,8 +372,8 @@ static void __init setup_bootmem(void) void free_initmem(void) { - unsigned long addr; - + unsigned long addr, init_begin, init_end; + printk(KERN_INFO "Freeing unused kernel memory: "); #ifdef CONFIG_DEBUG_KERNEL @@ -395,8 +396,11 @@ void free_initmem(void) local_irq_enable(); #endif - addr = (unsigned long)(&__init_begin); - for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) { + /* align __init_begin and __init_end to page size, + ignoring linker script where we might have tried to save RAM */ + init_begin = PAGE_ALIGN((unsigned long)(&__init_begin)); + init_end = PAGE_ALIGN((unsigned long)(&__init_end)); + for (addr = init_begin; addr < init_end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); free_page(addr); @@ -407,7 +411,7 @@ void free_initmem(void) /* set up a new led state on systems shipped LED State panel */ pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BCOMPLETE); - printk("%luk freed\n", (unsigned long)(&__init_end - &__init_begin) >> 10); + printk("%luk freed\n", (init_end - init_begin) >> 10); } @@ -639,11 +643,13 @@ static void __init map_pages(unsigned long start_vaddr, unsigned long start_padd * Map the fault vector writable so we can * write the HPMC checksum. */ +#if defined(CONFIG_PARISC_PAGE_SIZE_4KB) if (address >= ro_start && address < ro_end && address != fv_addr && address != gw_addr) pte = __mk_pte(address, PAGE_KERNEL_RO); else +#endif pte = __mk_pte(address, pgprot); if (address >= end_paddr) @@ -874,8 +880,7 @@ unsigned long alloc_sid(void) flush_tlb_all(); /* flush_tlb_all() calls recycle_sids() */ spin_lock(&sid_lock); } - if (free_space_ids == 0) - BUG(); + BUG_ON(free_space_ids == 0); } free_space_ids--; @@ -899,8 +904,7 @@ void free_sid(unsigned long spaceid) spin_lock(&sid_lock); - if (*dirty_space_offset & (1L << index)) - BUG(); /* attempt to free space id twice */ + BUG_ON(*dirty_space_offset & (1L << index)); /* attempt to free space id twice */ *dirty_space_offset |= (1L << index); dirty_space_ids++; @@ -975,7 +979,7 @@ static void recycle_sids(void) static unsigned long recycle_ndirty; static unsigned long recycle_dirty_array[SID_ARRAY_SIZE]; -static unsigned int recycle_inuse = 0; +static unsigned int recycle_inuse; void flush_tlb_all(void) { @@ -984,9 +988,7 @@ void flush_tlb_all(void) do_recycle = 0; spin_lock(&sid_lock); if (dirty_space_ids > RECYCLE_THRESHOLD) { - if (recycle_inuse) { - BUG(); /* FIXME: Use a semaphore/wait queue here */ - } + BUG_ON(recycle_inuse); /* FIXME: Use a semaphore/wait queue here */ get_dirty_sids(&recycle_ndirty,recycle_dirty_array); recycle_inuse++; do_recycle++; -- cgit v1.2.2