openwrt/upstream - upstream openwrt

	Commit message (Expand)	Author	Age	Files	Lines
*	nuke uci-sh, it is obsolete and no longer works	Felix Fietkau	2008-07-30	3	-590/+0
*	Here comes the new UCI. Enjoy :)	Felix Fietkau	2008-02-03	3	-0/+590

#ifndef __ARCH_ARM_MM__ #define __ARCH_ARM_MM__ #include <xen/config.h> #include <xen/kernel.h> #include <asm/page.h> #include <public/xen.h> #if defined(CONFIG_ARM_32) # include <asm/arm32/io.h> #elif defined(CONFIG_ARM_64) # include <asm/arm64/io.h> #else # error "unknown ARM variant" #endif /* Align Xen to a 2 MiB boundary. */ #define XEN_PADDR_ALIGN (1 << 21) /* * Per-page-frame information. * * Every architecture must ensure the following: * 1. 'struct page_info' contains a 'struct page_list_entry list'. * 2. Provide a PFN_ORDER() macro for accessing the order of a free page. */ #define PFN_ORDER(_pfn) ((_pfn)->v.free.order) struct page_info { /* Each frame can be threaded onto a doubly-linked list. */ struct page_list_entry list; /* Reference count and various PGC_xxx flags and fields. */ unsigned long count_info; /* Context-dependent fields follow... */ union { /* Page is in use: ((count_info & PGC_count_mask) != 0). */ struct { /* Type reference count and various PGT_xxx flags and fields. */ unsigned long type_info; } inuse; /* Page is on a free list: ((count_info & PGC_count_mask) == 0). */ struct { /* Do TLBs need flushing for safety before next page use? */ bool_t need_tlbflush; } free; } u; union { /* Page is in use, but not as a shadow. */ struct { /* Owner of this page (zero if page is anonymous). */ struct domain *domain; } inuse; /* Page is on a free list. */ struct { /* Order-size of the free chunk this page is the head of. */ unsigned int order; } free; } v; union { /* * Timestamp from 'TLB clock', used to avoid extra safety flushes. * Only valid for: a) free pages, and b) pages with zero type count */ u32 tlbflush_timestamp; }; u64 pad; }; #define PG_shift(idx) (BITS_PER_LONG - (idx)) #define PG_mask(x, idx) (x ## UL << PG_shift(idx)) #define PGT_none PG_mask(0, 4) /* no special uses of this page */ #define PGT_writable_page PG_mask(7, 4) /* has writable mappings? */ #define PGT_type_mask PG_mask(15, 4) /* Bits 28-31 or 60-63. */ /* Owning guest has pinned this page to its current type? */ #define _PGT_pinned PG_shift(5) #define PGT_pinned PG_mask(1, 5) /* Has this page been validated for use as its current type? */ #define _PGT_validated PG_shift(6) #define PGT_validated PG_mask(1, 6) /* Count of uses of this frame as its current type. */ #define PGT_count_width PG_shift(9) #define PGT_count_mask ((1UL<<PGT_count_width)-1) /* Cleared when the owning guest 'frees' this page. */ #define _PGC_allocated PG_shift(1) #define PGC_allocated PG_mask(1, 1) /* Page is Xen heap? */ #define _PGC_xen_heap PG_shift(2) #define PGC_xen_heap PG_mask(1, 2) /* ... */ /* Page is broken? */ #define _PGC_broken PG_shift(7) #define PGC_broken PG_mask(1, 7) /* Mutually-exclusive page states: { inuse, offlining, offlined, free }. */ #define PGC_state PG_mask(3, 9) #define PGC_state_inuse PG_mask(0, 9) #define PGC_state_offlining PG_mask(1, 9) #define PGC_state_offlined PG_mask(2, 9) #define PGC_state_free PG_mask(3, 9) #define page_state_is(pg, st) (((pg)->count_info&PGC_state) == PGC_state_##st) /* Count of references to this frame. */ #define PGC_count_width PG_shift(9) #define PGC_count_mask ((1UL<<PGC_count_width)-1) extern unsigned long xenheap_mfn_start, xenheap_mfn_end; extern unsigned long xenheap_virt_end; #define is_xen_heap_page(page) is_xen_heap_mfn(page_to_mfn(page)) #define is_xen_heap_mfn(mfn) ({ \ unsigned long _mfn = (mfn); \ (_mfn >= xenheap_mfn_start && _mfn < xenheap_mfn_end); \ }) #define is_xen_fixed_mfn(mfn) is_xen_heap_mfn(mfn) #define page_get_owner(_p) (_p)->v.inuse.domain #define page_set_owner(_p,_d) ((_p)->v.inuse.domain = (_d)) #define maddr_get_owner(ma) (page_get_owner(maddr_to_page((ma)))) #define XENSHARE_writable 0 #define XENSHARE_readonly 1 extern void share_xen_page_with_guest( struct page_info *page, struct domain *d, int readonly); extern void share_xen_page_with_privileged_guests( struct page_info *page, int readonly); #define frame_table ((struct page_info *)FRAMETABLE_VIRT_START) /* MFN of the first page in the frame table. */ extern unsigned long frametable_base_mfn; extern unsigned long max_page; extern unsigned long total_pages; /* Boot-time pagetable setup */ extern void setup_pagetables(unsigned long boot_phys_offset, paddr_t xen_paddr); /* Allocate and initialise pagetables for a secondary CPU */ extern int __cpuinit init_secondary_pagetables(int cpu); /* Switch secondary CPUS to its own pagetables and finalise MMU setup */ extern void __cpuinit mmu_init_secondary_cpu(void); /* Second stage paging setup, to be called on all CPUs */ extern void __cpuinit setup_virt_paging(void); /* Set up the xenheap: up to 1GB of contiguous, always-mapped memory. * Base must be 32MB aligned and size a multiple of 32MB. */ extern void setup_xenheap_mappings(unsigned long base_mfn, unsigned long nr_mfns); /* Map a frame table to cover physical addresses ps through pe */ extern void setup_frametable_mappings(paddr_t ps, paddr_t pe); /* Map a 4k page in a fixmap entry */ extern void set_fixmap(unsigned map, unsigned long mfn, unsigned attributes); /* Remove a mapping from a fixmap entry */ extern void clear_fixmap(unsigned map); /* map a physical range in virtual memory */ void __iomem *ioremap_attr(paddr_t start, size_t len, unsigned attributes); static inline void __iomem *ioremap_nocache(paddr_t start, size_t len) { return ioremap_attr(start, len, PAGE_HYPERVISOR_NOCACHE); } static inline void __iomem *ioremap_cache(paddr_t start, size_t len) { return ioremap_attr(start, len, PAGE_HYPERVISOR); } static inline void __iomem *ioremap_wc(paddr_t start, size_t len) { return ioremap_attr(start, len, PAGE_HYPERVISOR_WC); } #define mfn_valid(mfn) ({ \ unsigned long __m_f_n = (mfn); \ likely(__m_f_n < max_page); \ }) #define max_pdx max_page #define pfn_to_pdx(pfn) (pfn) #define pdx_to_pfn(pdx) (pdx) #define virt_to_pdx(va) virt_to_mfn(va) #define pdx_to_virt(pdx) mfn_to_virt(pdx) /* Convert between machine frame numbers and page-info structures. */ #define mfn_to_page(mfn) (frame_table + (pfn_to_pdx(mfn) - frametable_base_mfn)) #define page_to_mfn(pg) pdx_to_pfn((unsigned long)((pg) - frame_table) + frametable_base_mfn) #define __page_to_mfn(pg) page_to_mfn(pg) #define __mfn_to_page(mfn) mfn_to_page(mfn) /* Convert between machine addresses and page-info structures. */ #define maddr_to_page(ma) __mfn_to_page((ma) >> PAGE_SHIFT) #define page_to_maddr(pg) ((paddr_t)__page_to_mfn(pg) << PAGE_SHIFT) /* Convert between frame number and address formats. */ #define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT) #define paddr_to_pfn(pa) ((unsigned long)((pa) >> PAGE_SHIFT)) #define paddr_to_pdx(pa) pfn_to_pdx(paddr_to_pfn(pa)) static inline paddr_t virt_to_maddr(const void *va) { uint64_t par = va_to_par((vaddr_t)va); return (par & PADDR_MASK & PAGE_MASK) | ((vaddr_t) va & ~PAGE_MASK); } static inline void *maddr_to_virt(paddr_t ma) { ASSERT(is_xen_heap_mfn(ma >> PAGE_SHIFT)); ma -= pfn_to_paddr(xenheap_mfn_start); return (void *)(unsigned long) ma + XENHEAP_VIRT_START; } static inline int gvirt_to_maddr(vaddr_t va, paddr_t *pa) { uint64_t par = gva_to_ma_par(va); if ( par & PAR_F ) return -EFAULT; *pa = (par & PADDR_MASK & PAGE_MASK) | ((unsigned long) va & ~PAGE_MASK); return 0; } /* Convert between Xen-heap virtual addresses and machine addresses. */ #define __pa(x) (virt_to_maddr(x)) #define __va(x) (maddr_to_virt(x)) /* Convert between Xen-heap virtual addresses and machine frame numbers. */ #define virt_to_mfn(va) (virt_to_maddr(va) >> PAGE_SHIFT) #define mfn_to_virt(mfn) (maddr_to_virt((paddr_t)(mfn) << PAGE_SHIFT)) /* Convert between Xen-heap virtual addresses and page-info structures. */ static inline struct page_info *virt_to_page(const void *v) { unsigned long va = (unsigned long)v; ASSERT(va >= XENHEAP_VIRT_START); ASSERT(va < xenheap_virt_end); return frame_table + ((va - XENHEAP_VIRT_START) >> PAGE_SHIFT) + xenheap_mfn_start - frametable_base_mfn; } static inline void *page_to_virt(const struct page_info *pg) { return mfn_to_virt(page_to_mfn(pg)); } struct domain *page_get_owner_and_reference(struct page_info *page); void put_page(struct page_info *page); int get_page(struct page_info *page, struct domain *domain); /* * The MPT (machine->physical mapping table) is an array of word-sized * values, indexed on machine frame number. It is expected that guest OSes * will use it to store a "physical" frame number to give the appearance of * contiguous (or near contiguous) physical memory. */ #undef machine_to_phys_mapping #define machine_to_phys_mapping ((unsigned long *)RDWR_MPT_VIRT_START) #define INVALID_M2P_ENTRY (~0UL) #define VALID_M2P(_e) (!((_e) & (1UL<<(BITS_PER_LONG-1)))) #define SHARED_M2P_ENTRY (~0UL - 1UL) #define SHARED_M2P(_e) ((_e) == SHARED_M2P_ENTRY) #define _set_gpfn_from_mfn(mfn, pfn) ({ \ struct domain *d = page_get_owner(__mfn_to_page(mfn)); \ if(d && (d == dom_cow)) \ machine_to_phys_mapping[(mfn)] = SHARED_M2P_ENTRY; \ else \ machine_to_phys_mapping[(mfn)] = (pfn); \ }) static inline void put_gfn(struct domain *d, unsigned long gfn) {} static inline void mem_event_cleanup(struct domain *d) {} static inline int relinquish_shared_pages(struct domain *d) { return 0; } #define INVALID_MFN (~0UL) /* Xen always owns P2M on ARM */ #define set_gpfn_from_mfn(mfn, pfn) do { (void) (mfn), (void)(pfn); } while (0) #define mfn_to_gmfn(_d, mfn) (mfn) /* Arch-specific portion of memory_op hypercall. */ long arch_memory_op(int op, XEN_GUEST_HANDLE_PARAM(void) arg); int steal_page( struct domain *d, struct page_info *page, unsigned int memflags); int donate_page( struct domain *d, struct page_info *page, unsigned int memflags); #define domain_set_alloc_bitsize(d) ((void)0) #define domain_clamp_alloc_bitsize(d, b) (b) unsigned long domain_get_maximum_gpfn(struct domain *d); extern struct domain *dom_xen, *dom_io, *dom_cow; #define memguard_init(_s) (_s) #define memguard_guard_stack(_p) ((void)0) #define memguard_guard_range(_p,_l) ((void)0) #define memguard_unguard_range(_p,_l) ((void)0) /* Release all __init and __initdata ranges to be reused */ void free_init_memory(void); int guest_physmap_mark_populate_on_demand(struct domain *d, unsigned long gfn, unsigned int order); extern void put_page_type(struct page_info *page); static inline void put_page_and_type(struct page_info *page) { put_page_type(page); put_page(page); } #endif /* __ARCH_ARM_MM__ */ /* * Local variables: * mode: C * c-file-style: "BSD" * c-basic-offset: 4 * indent-tabs-mode: nil * End: */