| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tony Lindgren | 341 | 49.14% | 1 | 6.67% |
| Suman Anna | 290 | 41.79% | 8 | 53.33% |
| Joerg Roedel | 48 | 6.92% | 4 | 26.67% |
| Laurent Pinchart | 12 | 1.73% | 1 | 6.67% |
| Josue Albarran | 3 | 0.43% | 1 | 6.67% |
| Total | 694 | 15 |
/* * omap iommu: main structures * * Copyright (C) 2008-2009 Nokia Corporation * * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.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. */ #ifndef _OMAP_IOMMU_H #define _OMAP_IOMMU_H #include <linux/bitops.h> #include <linux/iommu.h> #define for_each_iotlb_cr(obj, n, __i, cr) \ for (__i = 0; \ (__i < (n)) && (cr = __iotlb_read_cr((obj), __i), true); \ __i++) struct iotlb_entry { u32 da; u32 pa; u32 pgsz, prsvd, valid; u32 endian, elsz, mixed; }; /** * struct omap_iommu_device - omap iommu device data * @pgtable: page table used by an omap iommu attached to a domain * @iommu_dev: pointer to store an omap iommu instance attached to a domain */ struct omap_iommu_device { u32 *pgtable; struct omap_iommu *iommu_dev; }; /** * struct omap_iommu_domain - omap iommu domain * @num_iommus: number of iommus in this domain * @iommus: omap iommu device data for all iommus in this domain * @dev: Device using this domain. * @lock: domain lock, should be taken when attaching/detaching * @domain: generic domain handle used by iommu core code */ struct omap_iommu_domain { u32 num_iommus; struct omap_iommu_device *iommus; struct device *dev; spinlock_t lock; struct iommu_domain domain; }; struct omap_iommu { const char *name; void __iomem *regbase; struct regmap *syscfg; struct device *dev; struct iommu_domain *domain; struct dentry *debug_dir; spinlock_t iommu_lock; /* global for this whole object */ /* * We don't change iopgd for a situation like pgd for a task, * but share it globally for each iommu. */ u32 *iopgd; spinlock_t page_table_lock; /* protect iopgd */ dma_addr_t pd_dma; int nr_tlb_entries; void *ctx; /* iommu context: registres saved area */ int has_bus_err_back; u32 id; struct iommu_device iommu; struct iommu_group *group; }; /** * struct omap_iommu_arch_data - omap iommu private data * @iommu_dev: handle of the iommu device * * This is an omap iommu private data object, which binds an iommu user * to its iommu device. This object should be placed at the iommu user's * dev_archdata so generic IOMMU API can be used without having to * utilize omap-specific plumbing anymore. */ struct omap_iommu_arch_data { struct omap_iommu *iommu_dev; }; struct cr_regs { u32 cam; u32 ram; }; struct iotlb_lock { short base; short vict; }; /* * MMU Register offsets */ #define MMU_REVISION 0x00 #define MMU_IRQSTATUS 0x18 #define MMU_IRQENABLE 0x1c #define MMU_WALKING_ST 0x40 #define MMU_CNTL 0x44 #define MMU_FAULT_AD 0x48 #define MMU_TTB 0x4c #define MMU_LOCK 0x50 #define MMU_LD_TLB 0x54 #define MMU_CAM 0x58 #define MMU_RAM 0x5c #define MMU_GFLUSH 0x60 #define MMU_FLUSH_ENTRY 0x64 #define MMU_READ_CAM 0x68 #define MMU_READ_RAM 0x6c #define MMU_EMU_FAULT_AD 0x70 #define MMU_GP_REG 0x88 #define MMU_REG_SIZE 256 /* * MMU Register bit definitions */ /* IRQSTATUS & IRQENABLE */ #define MMU_IRQ_MULTIHITFAULT BIT(4) #define MMU_IRQ_TABLEWALKFAULT BIT(3) #define MMU_IRQ_EMUMISS BIT(2) #define MMU_IRQ_TRANSLATIONFAULT BIT(1) #define MMU_IRQ_TLBMISS BIT(0) #define __MMU_IRQ_FAULT \ (MMU_IRQ_MULTIHITFAULT | MMU_IRQ_EMUMISS | MMU_IRQ_TRANSLATIONFAULT) #define MMU_IRQ_MASK \ (__MMU_IRQ_FAULT | MMU_IRQ_TABLEWALKFAULT | MMU_IRQ_TLBMISS) #define MMU_IRQ_TWL_MASK (__MMU_IRQ_FAULT | MMU_IRQ_TABLEWALKFAULT) #define MMU_IRQ_TLB_MISS_MASK (__MMU_IRQ_FAULT | MMU_IRQ_TLBMISS) /* MMU_CNTL */ #define MMU_CNTL_SHIFT 1 #define MMU_CNTL_MASK (7 << MMU_CNTL_SHIFT) #define MMU_CNTL_EML_TLB BIT(3) #define MMU_CNTL_TWL_EN BIT(2) #define MMU_CNTL_MMU_EN BIT(1) /* CAM */ #define MMU_CAM_VATAG_SHIFT 12 #define MMU_CAM_VATAG_MASK \ ((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT) #define MMU_CAM_P BIT(3) #define MMU_CAM_V BIT(2) #define MMU_CAM_PGSZ_MASK 3 #define MMU_CAM_PGSZ_1M (0 << 0) #define MMU_CAM_PGSZ_64K (1 << 0) #define MMU_CAM_PGSZ_4K (2 << 0) #define MMU_CAM_PGSZ_16M (3 << 0) /* RAM */ #define MMU_RAM_PADDR_SHIFT 12 #define MMU_RAM_PADDR_MASK \ ((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT) #define MMU_RAM_ENDIAN_SHIFT 9 #define MMU_RAM_ENDIAN_MASK BIT(MMU_RAM_ENDIAN_SHIFT) #define MMU_RAM_ENDIAN_LITTLE (0 << MMU_RAM_ENDIAN_SHIFT) #define MMU_RAM_ENDIAN_BIG BIT(MMU_RAM_ENDIAN_SHIFT) #define MMU_RAM_ELSZ_SHIFT 7 #define MMU_RAM_ELSZ_MASK (3 << MMU_RAM_ELSZ_SHIFT) #define MMU_RAM_ELSZ_8 (0 << MMU_RAM_ELSZ_SHIFT) #define MMU_RAM_ELSZ_16 (1 << MMU_RAM_ELSZ_SHIFT) #define MMU_RAM_ELSZ_32 (2 << MMU_RAM_ELSZ_SHIFT) #define MMU_RAM_ELSZ_NONE (3 << MMU_RAM_ELSZ_SHIFT) #define MMU_RAM_MIXED_SHIFT 6 #define MMU_RAM_MIXED_MASK BIT(MMU_RAM_MIXED_SHIFT) #define MMU_RAM_MIXED MMU_RAM_MIXED_MASK #define MMU_GP_REG_BUS_ERR_BACK_EN 0x1 #define get_cam_va_mask(pgsz) \ (((pgsz) == MMU_CAM_PGSZ_16M) ? 0xff000000 : \ ((pgsz) == MMU_CAM_PGSZ_1M) ? 0xfff00000 : \ ((pgsz) == MMU_CAM_PGSZ_64K) ? 0xffff0000 : \ ((pgsz) == MMU_CAM_PGSZ_4K) ? 0xfffff000 : 0) /* * DSP_SYSTEM registers and bit definitions (applicable only for DRA7xx DSP) */ #define DSP_SYS_REVISION 0x00 #define DSP_SYS_MMU_CONFIG 0x18 #define DSP_SYS_MMU_CONFIG_EN_SHIFT 4 /* * utilities for super page(16MB, 1MB, 64KB and 4KB) */ #define iopgsz_max(bytes) \ (((bytes) >= SZ_16M) ? SZ_16M : \ ((bytes) >= SZ_1M) ? SZ_1M : \ ((bytes) >= SZ_64K) ? SZ_64K : \ ((bytes) >= SZ_4K) ? SZ_4K : 0) #define bytes_to_iopgsz(bytes) \ (((bytes) == SZ_16M) ? MMU_CAM_PGSZ_16M : \ ((bytes) == SZ_1M) ? MMU_CAM_PGSZ_1M : \ ((bytes) == SZ_64K) ? MMU_CAM_PGSZ_64K : \ ((bytes) == SZ_4K) ? MMU_CAM_PGSZ_4K : -1) #define iopgsz_to_bytes(iopgsz) \ (((iopgsz) == MMU_CAM_PGSZ_16M) ? SZ_16M : \ ((iopgsz) == MMU_CAM_PGSZ_1M) ? SZ_1M : \ ((iopgsz) == MMU_CAM_PGSZ_64K) ? SZ_64K : \ ((iopgsz) == MMU_CAM_PGSZ_4K) ? SZ_4K : 0) #define iopgsz_ok(bytes) (bytes_to_iopgsz(bytes) >= 0) /* * global functions */ struct cr_regs __iotlb_read_cr(struct omap_iommu *obj, int n); void iotlb_lock_get(struct omap_iommu *obj, struct iotlb_lock *l); void iotlb_lock_set(struct omap_iommu *obj, struct iotlb_lock *l); #ifdef CONFIG_OMAP_IOMMU_DEBUG void omap_iommu_debugfs_init(void); void omap_iommu_debugfs_exit(void); void omap_iommu_debugfs_add(struct omap_iommu *obj); void omap_iommu_debugfs_remove(struct omap_iommu *obj); #else static inline void omap_iommu_debugfs_init(void) { } static inline void omap_iommu_debugfs_exit(void) { } static inline void omap_iommu_debugfs_add(struct omap_iommu *obj) { } static inline void omap_iommu_debugfs_remove(struct omap_iommu *obj) { } #endif /* * register accessors */ static inline u32 iommu_read_reg(struct omap_iommu *obj, size_t offs) { return __raw_readl(obj->regbase + offs); } static inline void iommu_write_reg(struct omap_iommu *obj, u32 val, size_t offs) { __raw_writel(val, obj->regbase + offs); } static inline int iotlb_cr_valid(struct cr_regs *cr) { if (!cr) return -EINVAL; return cr->cam & MMU_CAM_V; } #endif /* _OMAP_IOMMU_H */
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