diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/include/mmu/isp_mmu.h')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/atomisp2/include/mmu/isp_mmu.h | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/include/mmu/isp_mmu.h b/drivers/staging/media/atomisp/pci/atomisp2/include/mmu/isp_mmu.h deleted file mode 100644 index 4b2d94a37ea1..000000000000 --- a/drivers/staging/media/atomisp/pci/atomisp2/include/mmu/isp_mmu.h +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Support for Medifield PNW Camera Imaging ISP subsystem. - * - * Copyright (c) 2010 Intel Corporation. All Rights Reserved. - * - * Copyright (c) 2010 Silicon Hive www.siliconhive.com. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * 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. - * - * - */ -/* - * ISP MMU driver for classic two-level page tables - */ -#ifndef __ISP_MMU_H__ -#define __ISP_MMU_H__ - -#include <linux/types.h> -#include <linux/mutex.h> -#include <linux/slab.h> - -/* - * do not change these values, the page size for ISP must be the - * same as kernel's page size. - */ -#define ISP_PAGE_OFFSET 12 -#define ISP_PAGE_SIZE (1U << ISP_PAGE_OFFSET) -#define ISP_PAGE_MASK (~(phys_addr_t)(ISP_PAGE_SIZE - 1)) - -#define ISP_L1PT_OFFSET 22 -#define ISP_L1PT_MASK (~((1U << ISP_L1PT_OFFSET) - 1)) - -#define ISP_L2PT_OFFSET 12 -#define ISP_L2PT_MASK (~(ISP_L1PT_MASK|(~(ISP_PAGE_MASK)))) - -#define ISP_L1PT_PTES 1024 -#define ISP_L2PT_PTES 1024 - -#define ISP_PTR_TO_L1_IDX(x) ((((x) & ISP_L1PT_MASK)) \ - >> ISP_L1PT_OFFSET) - -#define ISP_PTR_TO_L2_IDX(x) ((((x) & ISP_L2PT_MASK)) \ - >> ISP_L2PT_OFFSET) - -#define ISP_PAGE_ALIGN(x) (((x) + (ISP_PAGE_SIZE-1)) \ - & ISP_PAGE_MASK) - -#define ISP_PT_TO_VIRT(l1_idx, l2_idx, offset) do {\ - ((l1_idx) << ISP_L1PT_OFFSET) | \ - ((l2_idx) << ISP_L2PT_OFFSET) | \ - (offset)\ -} while (0) - -#define pgnr_to_size(pgnr) ((pgnr) << ISP_PAGE_OFFSET) -#define size_to_pgnr_ceil(size) (((size) + (1 << ISP_PAGE_OFFSET) - 1)\ - >> ISP_PAGE_OFFSET) -#define size_to_pgnr_bottom(size) ((size) >> ISP_PAGE_OFFSET) - -struct isp_mmu; - -struct isp_mmu_client { - /* - * const value - * - * @name: - * driver name - * @pte_valid_mask: - * should be 1 bit valid data, meaning the value should - * be power of 2. - */ - char *name; - unsigned int pte_valid_mask; - unsigned int null_pte; - - /* - * get page directory base address (physical address). - * - * must be provided. - */ - unsigned int (*get_pd_base) (struct isp_mmu *mmu, phys_addr_t pd_base); - /* - * callback to flush tlb. - * - * tlb_flush_range will at least flush TLBs containing - * address mapping from addr to addr + size. - * - * tlb_flush_all will flush all TLBs. - * - * tlb_flush_all is must be provided. if tlb_flush_range is - * not valid, it will set to tlb_flush_all by default. - */ - void (*tlb_flush_range) (struct isp_mmu *mmu, - unsigned int addr, unsigned int size); - void (*tlb_flush_all) (struct isp_mmu *mmu); - unsigned int (*phys_to_pte) (struct isp_mmu *mmu, - phys_addr_t phys); - phys_addr_t (*pte_to_phys) (struct isp_mmu *mmu, - unsigned int pte); - -}; - -struct isp_mmu { - struct isp_mmu_client *driver; - unsigned int l1_pte; - int l2_pgt_refcount[ISP_L1PT_PTES]; - phys_addr_t base_address; - - struct mutex pt_mutex; - struct kmem_cache *tbl_cache; -}; - -/* flags for PDE and PTE */ -#define ISP_PTE_VALID_MASK(mmu) \ - ((mmu)->driver->pte_valid_mask) - -#define ISP_PTE_VALID(mmu, pte) \ - ((pte) & ISP_PTE_VALID_MASK(mmu)) - -#define NULL_PAGE ((phys_addr_t)(-1) & ISP_PAGE_MASK) -#define PAGE_VALID(page) ((page) != NULL_PAGE) - -/* - * init mmu with specific mmu driver. - */ -int isp_mmu_init(struct isp_mmu *mmu, struct isp_mmu_client *driver); -/* - * cleanup all mmu related things. - */ -void isp_mmu_exit(struct isp_mmu *mmu); - -/* - * setup/remove address mapping for pgnr continous physical pages - * and isp_virt. - * - * map/unmap is mutex lock protected, and caller does not have - * to do lock/unlock operation. - * - * map/unmap will not flush tlb, and caller needs to deal with - * this itself. - */ -int isp_mmu_map(struct isp_mmu *mmu, unsigned int isp_virt, - phys_addr_t phys, unsigned int pgnr); - -void isp_mmu_unmap(struct isp_mmu *mmu, unsigned int isp_virt, - unsigned int pgnr); - -static inline void isp_mmu_flush_tlb_all(struct isp_mmu *mmu) -{ - if (mmu->driver && mmu->driver->tlb_flush_all) - mmu->driver->tlb_flush_all(mmu); -} - -#define isp_mmu_flush_tlb isp_mmu_flush_tlb_all - -static inline void isp_mmu_flush_tlb_range(struct isp_mmu *mmu, - unsigned int start, unsigned int size) -{ - if (mmu->driver && mmu->driver->tlb_flush_range) - mmu->driver->tlb_flush_range(mmu, start, size); -} - -#endif /* ISP_MMU_H_ */ |