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Diffstat (limited to 'include/asm-powerpc/iommu.h')
| -rw-r--r-- | include/asm-powerpc/iommu.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h deleted file mode 100644 index 51ecfef8d84..00000000000 --- a/include/asm-powerpc/iommu.h +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation - * Rewrite, cleanup: - * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef _ASM_IOMMU_H -#define _ASM_IOMMU_H -#ifdef __KERNEL__ - -#include <linux/compiler.h> -#include <linux/spinlock.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/bitops.h> -#include <asm/machdep.h> -#include <asm/types.h> - -#define IOMMU_PAGE_SHIFT 12 -#define IOMMU_PAGE_SIZE (ASM_CONST(1) << IOMMU_PAGE_SHIFT) -#define IOMMU_PAGE_MASK (~((1 << IOMMU_PAGE_SHIFT) - 1)) -#define IOMMU_PAGE_ALIGN(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE) - -/* Boot time flags */ -extern int iommu_is_off; -extern int iommu_force_on; - -/* Pure 2^n version of get_order */ -static __inline__ __attribute_const__ int get_iommu_order(unsigned long size) -{ - return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT) + 1; -} - - -/* - * IOMAP_MAX_ORDER defines the largest contiguous block - * of dma space we can get. IOMAP_MAX_ORDER = 13 - * allows up to 2**12 pages (4096 * 4096) = 16 MB - */ -#define IOMAP_MAX_ORDER 13 - -struct iommu_table { - unsigned long it_busno; /* Bus number this table belongs to */ - unsigned long it_size; /* Size of iommu table in entries */ - unsigned long it_offset; /* Offset into global table */ - unsigned long it_base; /* mapped address of tce table */ - unsigned long it_index; /* which iommu table this is */ - unsigned long it_type; /* type: PCI or Virtual Bus */ - unsigned long it_blocksize; /* Entries in each block (cacheline) */ - unsigned long it_hint; /* Hint for next alloc */ - unsigned long it_largehint; /* Hint for large allocs */ - unsigned long it_halfpoint; /* Breaking point for small/large allocs */ - spinlock_t it_lock; /* Protects it_map */ - unsigned long *it_map; /* A simple allocation bitmap for now */ -}; - -struct scatterlist; - -/* Frees table for an individual device node */ -extern void iommu_free_table(struct iommu_table *tbl, const char *node_name); - -/* Initializes an iommu_table based in values set in the passed-in - * structure - */ -extern struct iommu_table *iommu_init_table(struct iommu_table * tbl, - int nid); - -extern int iommu_map_sg(struct device *dev, struct iommu_table *tbl, - struct scatterlist *sglist, int nelems, - unsigned long mask, enum dma_data_direction direction, - struct dma_attrs *attrs); -extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist, - int nelems, enum dma_data_direction direction, - struct dma_attrs *attrs); - -extern void *iommu_alloc_coherent(struct device *dev, struct iommu_table *tbl, - size_t size, dma_addr_t *dma_handle, - unsigned long mask, gfp_t flag, int node); -extern void iommu_free_coherent(struct iommu_table *tbl, size_t size, - void *vaddr, dma_addr_t dma_handle); -extern dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl, - void *vaddr, size_t size, unsigned long mask, - enum dma_data_direction direction, - struct dma_attrs *attrs); -extern void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction, - struct dma_attrs *attrs); - -extern void iommu_init_early_pSeries(void); -extern void iommu_init_early_iSeries(void); -extern void iommu_init_early_dart(void); -extern void iommu_init_early_pasemi(void); - -#ifdef CONFIG_PCI -extern void pci_iommu_init(void); -extern void pci_direct_iommu_init(void); -#else -static inline void pci_iommu_init(void) { } -#endif - -extern void alloc_dart_table(void); -#if defined(CONFIG_PPC64) && defined(CONFIG_PM) -static inline void iommu_save(void) -{ - if (ppc_md.iommu_save) - ppc_md.iommu_save(); -} - -static inline void iommu_restore(void) -{ - if (ppc_md.iommu_restore) - ppc_md.iommu_restore(); -} -#endif - -#endif /* __KERNEL__ */ -#endif /* _ASM_IOMMU_H */ |