| /linux/drivers/iommu/ |
| H A D | sun50i-iommu.c | 101 struct iommu_device iommu; member
125 struct sun50i_iommu *iommu; member
138 static u32 iommu_read(struct sun50i_iommu *iommu, u32 offset) in iommu_read() argument
140 return readl(iommu->base + offset); in iommu_read()
143 static void iommu_write(struct sun50i_iommu *iommu, u32 offset, u32 value) in iommu_write() argument
145 writel(value, iommu->base + offset); in iommu_write()
294 struct sun50i_iommu *iommu = sun50i_domain->iommu; in sun50i_table_flush() local
298 dma_sync_single_for_device(iommu->dev, dma, size, DMA_TO_DEVICE); in sun50i_table_flush()
301 static void sun50i_iommu_zap_iova(struct sun50i_iommu *iommu, in sun50i_iommu_zap_iova() argument
307 iommu_write(iommu, IOMMU_TLB_IVLD_ADDR_REG, iova); in sun50i_iommu_zap_iova()
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| H A D | rockchip-iommu.c | 117 struct iommu_device iommu; member
124 struct rk_iommu *iommu; member
347 static void rk_iommu_command(struct rk_iommu *iommu, u32 command) in rk_iommu_command() argument
351 for (i = 0; i < iommu->num_mmu; i++) in rk_iommu_command()
352 writel(command, iommu->bases[i] + RK_MMU_COMMAND); in rk_iommu_command()
359 static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova_start, in rk_iommu_zap_lines() argument
368 for (i = 0; i < iommu->num_mmu; i++) { in rk_iommu_zap_lines()
372 rk_iommu_write(iommu->bases[i], RK_MMU_ZAP_ONE_LINE, iova); in rk_iommu_zap_lines()
376 static bool rk_iommu_is_stall_active(struct rk_iommu *iommu) in rk_iommu_is_stall_active() argument
381 for (i = 0; i < iommu->num_mmu; i++) in rk_iommu_is_stall_active()
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| H A D | msm_iommu.c | 54 static int __enable_clocks(struct msm_iommu_dev *iommu) in __enable_clocks() argument
58 ret = clk_enable(iommu->pclk); in __enable_clocks()
62 if (iommu->clk) { in __enable_clocks()
63 ret = clk_enable(iommu->clk); in __enable_clocks()
65 clk_disable(iommu->pclk); in __enable_clocks()
71 static void __disable_clocks(struct msm_iommu_dev *iommu) in __disable_clocks() argument
73 if (iommu->clk) in __disable_clocks()
74 clk_disable(iommu->clk); in __disable_clocks()
75 clk_disable(iommu->pclk); in __disable_clocks()
120 struct msm_iommu_dev *iommu = NULL; in __flush_iotlb() local
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| H A D | iommu-sysfs.c | 54 int iommu_device_sysfs_add(struct iommu_device *iommu, in iommu_device_sysfs_add() argument
62 iommu->dev = kzalloc_obj(*iommu->dev); in iommu_device_sysfs_add()
63 if (!iommu->dev) in iommu_device_sysfs_add()
66 device_initialize(iommu->dev); in iommu_device_sysfs_add()
68 iommu->dev->class = &iommu_class; in iommu_device_sysfs_add()
69 iommu->dev->parent = parent; in iommu_device_sysfs_add()
70 iommu->dev->groups = groups; in iommu_device_sysfs_add()
73 ret = kobject_set_name_vargs(&iommu->dev->kobj, fmt, vargs); in iommu_device_sysfs_add()
78 ret = device_add(iommu->dev); in iommu_device_sysfs_add()
82 dev_set_drvdata(iommu->dev, iommu); in iommu_device_sysfs_add()
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| /linux/drivers/iommu/amd/ |
| H A D | init.c | 232 bool translation_pre_enabled(struct amd_iommu *iommu) in translation_pre_enabled() argument
234 return (iommu->flags & AMD_IOMMU_FLAG_TRANS_PRE_ENABLED); in translation_pre_enabled()
237 static void clear_translation_pre_enabled(struct amd_iommu *iommu) in clear_translation_pre_enabled() argument
239 iommu->flags &= ~AMD_IOMMU_FLAG_TRANS_PRE_ENABLED; in clear_translation_pre_enabled()
242 static void init_translation_status(struct amd_iommu *iommu) in init_translation_status() argument
246 ctrl = readq(iommu->mmio_base + MMIO_CONTROL_OFFSET); in init_translation_status()
248 iommu->flags |= AMD_IOMMU_FLAG_TRANS_PRE_ENABLED; in init_translation_status()
267 struct amd_iommu *iommu; in get_global_efr() local
269 for_each_iommu(iommu) { in get_global_efr()
270 u64 tmp = iommu->features; in get_global_efr()
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| H A D | ppr.c | 20 int __init amd_iommu_alloc_ppr_log(struct amd_iommu *iommu) in amd_iommu_alloc_ppr_log() argument
22 iommu->ppr_log = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO, in amd_iommu_alloc_ppr_log()
24 return iommu->ppr_log ? 0 : -ENOMEM; in amd_iommu_alloc_ppr_log()
27 void amd_iommu_enable_ppr_log(struct amd_iommu *iommu) in amd_iommu_enable_ppr_log() argument
31 if (iommu->ppr_log == NULL) in amd_iommu_enable_ppr_log()
34 iommu_feature_enable(iommu, CONTROL_PPR_EN); in amd_iommu_enable_ppr_log()
36 entry = iommu_virt_to_phys(iommu->ppr_log) | PPR_LOG_SIZE_512; in amd_iommu_enable_ppr_log()
38 memcpy_toio(iommu->mmio_base + MMIO_PPR_LOG_OFFSET, in amd_iommu_enable_ppr_log()
42 writel(0x00, iommu->mmio_base + MMIO_PPR_HEAD_OFFSET); in amd_iommu_enable_ppr_log()
43 writel(0x00, iommu->mmio_base + MMIO_PPR_TAIL_OFFSET); in amd_iommu_enable_ppr_log()
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| H A D | debugfs.c | 28 struct amd_iommu *iommu = m->private; in iommu_mmio_write() local
31 iommu->dbg_mmio_offset = -1; in iommu_mmio_write()
36 ret = kstrtou32_from_user(ubuf, cnt, 0, &iommu->dbg_mmio_offset); in iommu_mmio_write()
40 if (iommu->dbg_mmio_offset > iommu->mmio_phys_end - sizeof(u64)) { in iommu_mmio_write()
41 iommu->dbg_mmio_offset = -1; in iommu_mmio_write()
50 struct amd_iommu *iommu = m->private; in iommu_mmio_show() local
53 if (iommu->dbg_mmio_offset < 0) { in iommu_mmio_show()
58 value = readq(iommu->mmio_base + iommu->dbg_mmio_offset); in iommu_mmio_show()
59 seq_printf(m, "Offset:0x%x Value:0x%016llx\n", iommu->dbg_mmio_offset, value); in iommu_mmio_show()
69 struct amd_iommu *iommu = m->private; in iommu_capability_write() local
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| H A D | iommu.c | 75 static void set_dte_entry(struct amd_iommu *iommu,
84 static void iommu_flush_dte_sync(struct amd_iommu *iommu, u16 devid);
86 static struct iommu_dev_data *find_dev_data(struct amd_iommu *iommu, u16 devid);
91 static void clone_aliases(struct amd_iommu *iommu, struct device *dev);
93 static int iommu_completion_wait(struct amd_iommu *iommu);
146 static void update_dte256(struct amd_iommu *iommu, struct iommu_dev_data *dev_data, in update_dte256() argument
150 struct dev_table_entry *dev_table = get_dev_table(iommu); in update_dte256()
159 iommu_flush_dte_sync(iommu, dev_data->devid); in update_dte256()
164 iommu_flush_dte_sync(iommu, dev_data->devid); in update_dte256()
172 iommu_flush_dte_sync(iommu, dev_data->devid); in update_dte256()
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| H A D | amd_iommu.h | 18 void amd_iommu_restart_log(struct amd_iommu *iommu, const char *evt_type,
21 void amd_iommu_restart_event_logging(struct amd_iommu *iommu);
22 void amd_iommu_restart_ga_log(struct amd_iommu *iommu);
23 void amd_iommu_restart_ppr_log(struct amd_iommu *iommu);
24 void amd_iommu_set_rlookup_table(struct amd_iommu *iommu, u16 devid);
25 void iommu_feature_enable(struct amd_iommu *iommu, u8 bit);
26 void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu,
64 int amd_iommu_iopf_init(struct amd_iommu *iommu);
65 void amd_iommu_iopf_uninit(struct amd_iommu *iommu);
68 int amd_iommu_iopf_add_device(struct amd_iommu *iommu,
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| /linux/arch/sparc/kernel/ |
| H A D | iommu.c | 52 struct iommu *iommu = container_of(iommu_map_table, struct iommu, tbl); in iommu_flushall() local
53 if (iommu->iommu_flushinv) { in iommu_flushall()
54 iommu_write(iommu->iommu_flushinv, ~(u64)0); in iommu_flushall()
59 tag = iommu->iommu_tags; in iommu_flushall()
66 (void) iommu_read(iommu->write_complete_reg); in iommu_flushall()
80 #define IOPTE_IS_DUMMY(iommu, iopte) \ argument
81 ((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)
83 static inline void iopte_make_dummy(struct iommu *iommu, iopte_t *iopte) in iopte_make_dummy() argument
88 val |= iommu->dummy_page_pa; in iopte_make_dummy()
93 int iommu_table_init(struct iommu *iommu, int tsbsize, in iommu_table_init() argument
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| H A D | iommu-common.c | 19 static inline bool need_flush(struct iommu_map_table *iommu) in need_flush() argument
21 return ((iommu->flags & IOMMU_NEED_FLUSH) != 0); in need_flush()
24 static inline void set_flush(struct iommu_map_table *iommu) in set_flush() argument
26 iommu->flags |= IOMMU_NEED_FLUSH; in set_flush()
29 static inline void clear_flush(struct iommu_map_table *iommu) in clear_flush() argument
31 iommu->flags &= ~IOMMU_NEED_FLUSH; in clear_flush()
52 void iommu_tbl_pool_init(struct iommu_map_table *iommu, in iommu_tbl_pool_init() argument
60 struct iommu_pool *p = &(iommu->large_pool); in iommu_tbl_pool_init()
64 iommu->nr_pools = IOMMU_NR_POOLS; in iommu_tbl_pool_init()
66 iommu->nr_pools = npools; in iommu_tbl_pool_init()
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| H A D | sbus.c | 63 struct iommu *iommu = dev->archdata.iommu; in sbus_set_sbus64() local
78 cfg_reg = iommu->write_complete_reg; in sbus_set_sbus64()
213 struct iommu *iommu = op->dev.archdata.iommu; in sbus_build_irq() local
214 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL; in sbus_build_irq()
275 struct iommu *iommu = op->dev.archdata.iommu; in sysio_ue_handler() local
276 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL; in sysio_ue_handler()
349 struct iommu *iommu = op->dev.archdata.iommu; in sysio_ce_handler() local
350 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL; in sysio_ce_handler()
428 struct iommu *iommu = op->dev.archdata.iommu; in sysio_sbus_error_handler() local
433 reg_base = iommu->write_complete_reg - 0x2000UL; in sysio_sbus_error_handler()
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| /linux/drivers/iommu/intel/ |
| H A D | pasid.c | 63 dir = iommu_alloc_pages_node_sz(info->iommu->node, GFP_KERNEL, in intel_pasid_alloc_table()
74 if (!ecap_coherent(info->iommu->ecap)) in intel_pasid_alloc_table()
151 entries = iommu_alloc_pages_node_sz(info->iommu->node, in intel_pasid_get_entry()
156 if (!ecap_coherent(info->iommu->ecap)) in intel_pasid_get_entry()
171 if (!ecap_coherent(info->iommu->ecap)) in intel_pasid_get_entry()
197 pasid_cache_invalidation_with_pasid(struct intel_iommu *iommu, in pasid_cache_invalidation_with_pasid() argument
208 qi_submit_sync(iommu, &desc, 1, 0); in pasid_cache_invalidation_with_pasid()
212 devtlb_invalidation_with_pasid(struct intel_iommu *iommu, in devtlb_invalidation_with_pasid() argument
236 qi_flush_dev_iotlb(iommu, sid, pfsid, qdep, 0, 64 - VTD_PAGE_SHIFT); in devtlb_invalidation_with_pasid()
238 qi_flush_dev_iotlb_pasid(iommu, sid, pfsid, pasid, qdep, 0, 64 - VTD_PAGE_SHIFT); in devtlb_invalidation_with_pasid()
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| H A D | irq_remapping.c | 30 struct intel_iommu *iommu; member
37 struct intel_iommu *iommu; member
44 struct intel_iommu *iommu; member
81 static void iommu_disable_irq_remapping(struct intel_iommu *iommu);
85 static bool ir_pre_enabled(struct intel_iommu *iommu) in ir_pre_enabled() argument
87 return (iommu->flags & VTD_FLAG_IRQ_REMAP_PRE_ENABLED); in ir_pre_enabled()
90 static void clear_ir_pre_enabled(struct intel_iommu *iommu) in clear_ir_pre_enabled() argument
92 iommu->flags &= ~VTD_FLAG_IRQ_REMAP_PRE_ENABLED; in clear_ir_pre_enabled()
95 static void init_ir_status(struct intel_iommu *iommu) in init_ir_status() argument
99 gsts = readl(iommu->reg + DMAR_GSTS_REG); in init_ir_status()
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| H A D | iommu.c | 53 #define rwbf_required(iommu) (rwbf_quirk || cap_rwbf((iommu)->cap)) argument
124 struct device *device_rbtree_find(struct intel_iommu *iommu, u16 rid) in device_rbtree_find() argument
130 spin_lock_irqsave(&iommu->device_rbtree_lock, flags); in device_rbtree_find()
131 node = rb_find(&rid, &iommu->device_rbtree, device_rid_cmp_key); in device_rbtree_find()
134 spin_unlock_irqrestore(&iommu->device_rbtree_lock, flags); in device_rbtree_find()
139 static int device_rbtree_insert(struct intel_iommu *iommu, in device_rbtree_insert() argument
145 spin_lock_irqsave(&iommu->device_rbtree_lock, flags); in device_rbtree_insert()
146 curr = rb_find_add(&info->node, &iommu->device_rbtree, device_rid_cmp); in device_rbtree_insert()
147 spin_unlock_irqrestore(&iommu->device_rbtree_lock, flags); in device_rbtree_insert()
156 struct intel_iommu *iommu = info->iommu; in device_rbtree_remove() local
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| H A D | dmar.c | 68 static void free_iommu(struct intel_iommu *iommu);
462 if (dmaru->iommu) in dmar_free_drhd()
463 free_iommu(dmaru->iommu); in dmar_free_drhd()
502 drhd->iommu->node = node; in dmar_parse_one_rhsa()
939 x86_init.iommu.iommu_init = intel_iommu_init; in detect_intel_iommu()
950 static void unmap_iommu(struct intel_iommu *iommu) in unmap_iommu() argument
952 iounmap(iommu->reg); in unmap_iommu()
953 release_mem_region(iommu->reg_phys, iommu->reg_size); in unmap_iommu()
964 static int map_iommu(struct intel_iommu *iommu, struct dmar_drhd_unit *drhd) in map_iommu() argument
969 iommu->reg_phys = phys_addr; in map_iommu()
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| H A D | cache.c | 24 struct intel_iommu *iommu, struct device *dev, in cache_tage_match() argument
34 return tag->iommu == iommu; in cache_tage_match()
47 struct intel_iommu *iommu = info->iommu; in cache_tag_assign() local
57 tag->iommu = iommu; in cache_tag_assign()
65 tag->dev = iommu->iommu.dev; in cache_tag_assign()
70 if (cache_tage_match(temp, did, iommu, dev, pasid, type)) { in cache_tag_assign()
77 if (temp->iommu == iommu) in cache_tag_assign()
98 struct intel_iommu *iommu = info->iommu; in cache_tag_unassign() local
104 if (cache_tage_match(tag, did, iommu, dev, pasid, type)) { in cache_tag_unassign()
202 struct intel_iommu *iommu = info->iommu; in domain_get_id_for_dev() local
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| H A D | perfmon.c | 327 struct intel_iommu *iommu = iommu_pmu->iommu; in iommu_pmu_start() local
356 ecmd_submit_sync(iommu, DMA_ECMD_ENABLE, hwc->idx, 0); in iommu_pmu_start()
364 struct intel_iommu *iommu = iommu_pmu->iommu; in iommu_pmu_stop() local
368 ecmd_submit_sync(iommu, DMA_ECMD_DISABLE, hwc->idx, 0); in iommu_pmu_stop()
476 struct intel_iommu *iommu = iommu_pmu->iommu; in iommu_pmu_enable() local
478 ecmd_submit_sync(iommu, DMA_ECMD_UNFREEZE, 0, 0); in iommu_pmu_enable()
484 struct intel_iommu *iommu = iommu_pmu->iommu; in iommu_pmu_disable() local
486 ecmd_submit_sync(iommu, DMA_ECMD_FREEZE, 0, 0); in iommu_pmu_disable()
519 struct intel_iommu *iommu = dev_id; in iommu_pmu_irq_handler() local
521 if (!dmar_readl(iommu->reg + DMAR_PERFINTRSTS_REG)) in iommu_pmu_irq_handler()
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| /linux/drivers/iommu/riscv/ |
| H A D | iommu.c | 44 iommu_get_iommu_dev(dev, struct riscv_iommu_device, iommu)
70 static void *riscv_iommu_get_pages(struct riscv_iommu_device *iommu, in riscv_iommu_get_pages() argument
76 addr = iommu_alloc_pages_node_sz(dev_to_node(iommu->dev), in riscv_iommu_get_pages()
91 devres_add(iommu->dev, devres); in riscv_iommu_get_pages()
96 static void riscv_iommu_free_pages(struct riscv_iommu_device *iommu, void *addr) in riscv_iommu_free_pages() argument
100 devres_release(iommu->dev, riscv_iommu_devres_pages_release, in riscv_iommu_free_pages()
131 static int riscv_iommu_queue_alloc(struct riscv_iommu_device *iommu, in riscv_iommu_queue_alloc() argument
142 riscv_iommu_writeq(iommu, queue->qbr, RISCV_IOMMU_QUEUE_LOG2SZ_FIELD); in riscv_iommu_queue_alloc()
143 qb = riscv_iommu_readq(iommu, queue->qbr); in riscv_iommu_queue_alloc()
163 queue->base = devm_ioremap(iommu->dev, queue->phys, queue_size); in riscv_iommu_queue_alloc()
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| /linux/tools/testing/selftests/vfio/lib/ |
| H A D | iommu.c | 69 int __iommu_hva2iova(struct iommu *iommu, void *vaddr, iova_t *iova) in __iommu_hva2iova() argument
73 list_for_each_entry(region, &iommu->dma_regions, link) { in __iommu_hva2iova()
89 iova_t iommu_hva2iova(struct iommu *iommu, void *vaddr) in iommu_hva2iova() argument
94 ret = __iommu_hva2iova(iommu, vaddr, &iova); in iommu_hva2iova()
100 static int vfio_iommu_map(struct iommu *iommu, struct dma_region *region) in vfio_iommu_map() argument
110 if (ioctl(iommu->container_fd, VFIO_IOMMU_MAP_DMA, &args)) in vfio_iommu_map()
116 static int iommufd_map(struct iommu *iommu, struct dma_region *region) in iommufd_map() argument
126 .ioas_id = iommu->ioas_id, in iommufd_map()
129 if (ioctl(iommu->iommufd, IOMMU_IOAS_MAP, &args)) in iommufd_map()
135 int __iommu_map(struct iommu *iommu, struct dma_region *region) in __iommu_map() argument
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| /linux/tools/testing/selftests/vfio/lib/include/libvfio/ |
| H A D | iommu.h | 27 struct iommu { struct
35 struct iommu *iommu_init(const char *iommu_mode); argument
36 void iommu_cleanup(struct iommu *iommu);
38 int __iommu_map(struct iommu *iommu, struct dma_region *region);
40 static inline void iommu_map(struct iommu *iommu, struct dma_region *region) in iommu_map() argument
42 VFIO_ASSERT_EQ(__iommu_map(iommu, region), 0); in iommu_map()
45 int __iommu_unmap(struct iommu *iomm
28 modeiommu global() argument
30 iommufdiommu global() argument
47 iommu_unmap(struct iommu * iommu,struct dma_region * region) iommu_unmap() argument
54 iommu_unmap_all(struct iommu * iommu) iommu_unmap_all() argument
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| /linux/drivers/vfio/ |
| H A D | vfio_iommu_type1.c | 158 vfio_iommu_find_iommu_group(struct vfio_iommu *iommu,
166 static struct vfio_dma *vfio_find_dma(struct vfio_iommu *iommu, in vfio_find_dma() argument
169 struct rb_node *node = iommu->dma_list.rb_node; in vfio_find_dma()
187 static struct rb_node *vfio_find_dma_first_node(struct vfio_iommu *iommu, in vfio_find_dma_first_node() argument
192 struct rb_node *node = iommu->dma_list.rb_node; in vfio_find_dma_first_node()
215 static void vfio_link_dma(struct vfio_iommu *iommu, struct vfio_dma *new) in vfio_link_dma() argument
217 struct rb_node **link = &iommu->dma_list.rb_node, *parent = NULL; in vfio_link_dma()
233 rb_insert_color(&new->node, &iommu->dma_list); in vfio_link_dma()
236 static void vfio_unlink_dma(struct vfio_iommu *iommu, struct vfio_dma *old) in vfio_unlink_dma() argument
238 rb_erase(&old->node, &iommu->dma_list); in vfio_unlink_dma()
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| /linux/arch/sparc/mm/ |
| H A D | iommu.c | 60 struct iommu_struct *iommu; in sbus_iommu_init() local
67 iommu = kmalloc_obj(struct iommu_struct); in sbus_iommu_init()
68 if (!iommu) { in sbus_iommu_init()
73 iommu->regs = of_ioremap(&op->resource[0], 0, PAGE_SIZE * 3, in sbus_iommu_init()
75 if (!iommu->regs) { in sbus_iommu_init()
80 control = sbus_readl(&iommu->regs->control); in sbus_iommu_init()
85 sbus_writel(control, &iommu->regs->control); in sbus_iommu_init()
87 iommu_invalidate(iommu->regs); in sbus_iommu_init()
88 iommu->start = IOMMU_START; in sbus_iommu_init()
89 iommu->end = 0xffffffff; in sbus_iommu_init()
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| /linux/Documentation/ABI/testing/ |
| H A D | debugfs-amd-iommu | 1 What: /sys/kernel/debug/iommu/amd/iommu<x>/mmio
6 MMIO register offset for iommu<x>, and the file outputs the corresponding
7 MMIO register value of iommu<x>
11 $ echo "0x18" > /sys/kernel/debug/iommu/amd/iommu00/mmio
12 $ cat /sys/kernel/debug/iommu/amd/iommu00/mmio
18 What: /sys/kernel/debug/iommu/amd/iommu<x>/capability
23 capability register offset for iommu<x>, and the file outputs the
24 corresponding capability register value of iommu<x>.
28 $ echo "0x10" > /sys/kernel/debug/iommu/amd/iommu00/capability
29 $ cat /sys/kernel/debug/iommu/amd/iommu00/capability
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| /linux/drivers/gpu/drm/msm/ |
| H A D | msm_iommu.c | 138 struct msm_iommu *iommu = to_msm_iommu(pagetable->parent); in msm_iommu_pagetable_map_prr() local
139 phys_addr_t phys = page_to_phys(iommu->prr_page); in msm_iommu_pagetable_map_prr()
224 struct msm_iommu *iommu = to_msm_iommu(pagetable->parent); in msm_iommu_pagetable_destroy() local
232 mutex_lock(&iommu->init_lock); in msm_iommu_pagetable_destroy()
233 if (--iommu->pagetables == 0) { in msm_iommu_pagetable_destroy()
238 __free_page(iommu->prr_page); in msm_iommu_pagetable_destroy()
239 iommu->prr_page = NULL; in msm_iommu_pagetable_destroy()
242 mutex_unlock(&iommu->init_lock); in msm_iommu_pagetable_destroy()
269 struct msm_iommu *iommu = to_msm_iommu(mmu); in msm_iommu_get_geometry() local
271 return &iommu->domain->geometry; in msm_iommu_get_geometry()
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