Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007-2008 Advanced Micro Devices, Inc. |
| 3 | * Author: Joerg Roedel <joerg.roedel@amd.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published |
| 7 | * by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | */ |
| 18 | |
| 19 | #ifndef __LINUX_IOMMU_H |
| 20 | #define __LINUX_IOMMU_H |
| 21 | |
Laura Abbott | 74315cc | 2011-06-08 17:29:11 -0400 | [diff] [blame] | 22 | #include <linux/errno.h> |
Wang YanQing | 9a08d37 | 2013-04-19 09:38:04 +0800 | [diff] [blame] | 23 | #include <linux/err.h> |
Thierry Reding | 76582d0 | 2012-07-25 16:24:49 +0200 | [diff] [blame] | 24 | #include <linux/types.h> |
Shuah Khan | 56fa484 | 2013-09-24 15:21:20 -0600 | [diff] [blame] | 25 | #include <trace/events/iommu.h> |
Laura Abbott | 74315cc | 2011-06-08 17:29:11 -0400 | [diff] [blame] | 26 | |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 27 | #define IOMMU_READ (1) |
| 28 | #define IOMMU_WRITE (2) |
Sheng Yang | 9cf06697 | 2009-03-18 15:33:07 +0800 | [diff] [blame] | 29 | #define IOMMU_CACHE (4) /* DMA cache coherency */ |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 30 | |
Joerg Roedel | 905d66c | 2011-09-06 16:03:26 +0200 | [diff] [blame] | 31 | struct iommu_ops; |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 32 | struct iommu_group; |
Joerg Roedel | ff21776 | 2011-08-26 16:48:26 +0200 | [diff] [blame] | 33 | struct bus_type; |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 34 | struct device; |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 35 | struct iommu_domain; |
Joerg Roedel | ba1eabfa | 2012-08-03 15:55:41 +0200 | [diff] [blame] | 36 | struct notifier_block; |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 37 | |
| 38 | /* iommu fault flags */ |
| 39 | #define IOMMU_FAULT_READ 0x0 |
| 40 | #define IOMMU_FAULT_WRITE 0x1 |
| 41 | |
| 42 | typedef int (*iommu_fault_handler_t)(struct iommu_domain *, |
Ohad Ben-Cohen | 77ca233 | 2012-05-21 20:20:05 +0300 | [diff] [blame] | 43 | struct device *, unsigned long, int, void *); |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 44 | |
Joerg Roedel | 0ff64f8 | 2012-01-26 19:40:53 +0100 | [diff] [blame] | 45 | struct iommu_domain_geometry { |
| 46 | dma_addr_t aperture_start; /* First address that can be mapped */ |
| 47 | dma_addr_t aperture_end; /* Last address that can be mapped */ |
| 48 | bool force_aperture; /* DMA only allowed in mappable range? */ |
| 49 | }; |
| 50 | |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 51 | struct iommu_domain { |
Joerg Roedel | 905d66c | 2011-09-06 16:03:26 +0200 | [diff] [blame] | 52 | struct iommu_ops *ops; |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 53 | void *priv; |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 54 | iommu_fault_handler_t handler; |
Ohad Ben-Cohen | 77ca233 | 2012-05-21 20:20:05 +0300 | [diff] [blame] | 55 | void *handler_token; |
Joerg Roedel | 0ff64f8 | 2012-01-26 19:40:53 +0100 | [diff] [blame] | 56 | struct iommu_domain_geometry geometry; |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 57 | }; |
| 58 | |
Sheng Yang | dbb9fd8 | 2009-03-18 15:33:06 +0800 | [diff] [blame] | 59 | #define IOMMU_CAP_CACHE_COHERENCY 0x1 |
Tom Lyon | 323f99c | 2010-07-02 16:56:14 -0400 | [diff] [blame] | 60 | #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ |
Sheng Yang | dbb9fd8 | 2009-03-18 15:33:06 +0800 | [diff] [blame] | 61 | |
Varun Sethi | 7cabf49 | 2013-07-15 10:20:56 +0530 | [diff] [blame] | 62 | /* |
| 63 | * Following constraints are specifc to FSL_PAMUV1: |
| 64 | * -aperture must be power of 2, and naturally aligned |
| 65 | * -number of windows must be power of 2, and address space size |
| 66 | * of each window is determined by aperture size / # of windows |
| 67 | * -the actual size of the mapped region of a window must be power |
| 68 | * of 2 starting with 4KB and physical address must be naturally |
| 69 | * aligned. |
| 70 | * DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints. |
| 71 | * The caller can invoke iommu_domain_get_attr to check if the underlying |
| 72 | * iommu implementation supports these constraints. |
| 73 | */ |
| 74 | |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 75 | enum iommu_attr { |
Joerg Roedel | 0ff64f8 | 2012-01-26 19:40:53 +0100 | [diff] [blame] | 76 | DOMAIN_ATTR_GEOMETRY, |
Joerg Roedel | d2e1216 | 2013-01-29 13:49:04 +0100 | [diff] [blame] | 77 | DOMAIN_ATTR_PAGING, |
Joerg Roedel | 6935671 | 2013-02-04 14:00:01 +0100 | [diff] [blame] | 78 | DOMAIN_ATTR_WINDOWS, |
Varun Sethi | 7cabf49 | 2013-07-15 10:20:56 +0530 | [diff] [blame] | 79 | DOMAIN_ATTR_FSL_PAMU_STASH, |
| 80 | DOMAIN_ATTR_FSL_PAMU_ENABLE, |
| 81 | DOMAIN_ATTR_FSL_PAMUV1, |
Joerg Roedel | a8b8a88a | 2013-01-29 14:36:31 +0100 | [diff] [blame] | 82 | DOMAIN_ATTR_MAX, |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 83 | }; |
| 84 | |
Joerg Roedel | 39d4ebb | 2011-09-06 16:48:40 +0200 | [diff] [blame] | 85 | #ifdef CONFIG_IOMMU_API |
| 86 | |
Ohad Ben-Cohen | 7d3002c | 2011-11-10 11:32:26 +0200 | [diff] [blame] | 87 | /** |
| 88 | * struct iommu_ops - iommu ops and capabilities |
| 89 | * @domain_init: init iommu domain |
| 90 | * @domain_destroy: destroy iommu domain |
| 91 | * @attach_dev: attach device to an iommu domain |
| 92 | * @detach_dev: detach device from an iommu domain |
| 93 | * @map: map a physically contiguous memory region to an iommu domain |
| 94 | * @unmap: unmap a physically contiguous memory region from an iommu domain |
| 95 | * @iova_to_phys: translate iova to physical address |
| 96 | * @domain_has_cap: domain capabilities query |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 97 | * @add_device: add device to iommu grouping |
| 98 | * @remove_device: remove device from iommu grouping |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 99 | * @domain_get_attr: Query domain attributes |
| 100 | * @domain_set_attr: Change domain attributes |
Ohad Ben-Cohen | 7d3002c | 2011-11-10 11:32:26 +0200 | [diff] [blame] | 101 | * @pgsize_bitmap: bitmap of supported page sizes |
| 102 | */ |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 103 | struct iommu_ops { |
| 104 | int (*domain_init)(struct iommu_domain *domain); |
| 105 | void (*domain_destroy)(struct iommu_domain *domain); |
| 106 | int (*attach_dev)(struct iommu_domain *domain, struct device *dev); |
| 107 | void (*detach_dev)(struct iommu_domain *domain, struct device *dev); |
Joerg Roedel | 6765178 | 2010-01-21 16:32:27 +0100 | [diff] [blame] | 108 | int (*map)(struct iommu_domain *domain, unsigned long iova, |
Ohad Ben-Cohen | 5009065 | 2011-11-10 11:32:25 +0200 | [diff] [blame] | 109 | phys_addr_t paddr, size_t size, int prot); |
| 110 | size_t (*unmap)(struct iommu_domain *domain, unsigned long iova, |
| 111 | size_t size); |
Varun Sethi | bb5547ac | 2013-03-29 01:23:58 +0530 | [diff] [blame] | 112 | phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova); |
Sheng Yang | dbb9fd8 | 2009-03-18 15:33:06 +0800 | [diff] [blame] | 113 | int (*domain_has_cap)(struct iommu_domain *domain, |
| 114 | unsigned long cap); |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 115 | int (*add_device)(struct device *dev); |
| 116 | void (*remove_device)(struct device *dev); |
Alex Williamson | 1460432 | 2011-10-21 15:56:05 -0400 | [diff] [blame] | 117 | int (*device_group)(struct device *dev, unsigned int *groupid); |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 118 | int (*domain_get_attr)(struct iommu_domain *domain, |
| 119 | enum iommu_attr attr, void *data); |
| 120 | int (*domain_set_attr)(struct iommu_domain *domain, |
| 121 | enum iommu_attr attr, void *data); |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 122 | |
| 123 | /* Window handling functions */ |
| 124 | int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, |
Varun Sethi | 80f97f0 | 2013-03-29 01:24:00 +0530 | [diff] [blame] | 125 | phys_addr_t paddr, u64 size, int prot); |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 126 | void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); |
Joerg Roedel | 6935671 | 2013-02-04 14:00:01 +0100 | [diff] [blame] | 127 | /* Set the numer of window per domain */ |
| 128 | int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count); |
| 129 | /* Get the numer of window per domain */ |
| 130 | u32 (*domain_get_windows)(struct iommu_domain *domain); |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 131 | |
Ohad Ben-Cohen | 7d3002c | 2011-11-10 11:32:26 +0200 | [diff] [blame] | 132 | unsigned long pgsize_bitmap; |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 133 | }; |
| 134 | |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 135 | #define IOMMU_GROUP_NOTIFY_ADD_DEVICE 1 /* Device added */ |
| 136 | #define IOMMU_GROUP_NOTIFY_DEL_DEVICE 2 /* Pre Device removed */ |
| 137 | #define IOMMU_GROUP_NOTIFY_BIND_DRIVER 3 /* Pre Driver bind */ |
| 138 | #define IOMMU_GROUP_NOTIFY_BOUND_DRIVER 4 /* Post Driver bind */ |
| 139 | #define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER 5 /* Pre Driver unbind */ |
| 140 | #define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */ |
| 141 | |
Joerg Roedel | ff21776 | 2011-08-26 16:48:26 +0200 | [diff] [blame] | 142 | extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops); |
Joerg Roedel | a1b60c1 | 2011-09-06 18:46:34 +0200 | [diff] [blame] | 143 | extern bool iommu_present(struct bus_type *bus); |
Joerg Roedel | 905d66c | 2011-09-06 16:03:26 +0200 | [diff] [blame] | 144 | extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus); |
Alexey Kardashevskiy | aa16bea | 2013-03-25 10:23:49 +1100 | [diff] [blame] | 145 | extern struct iommu_group *iommu_group_get_by_id(int id); |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 146 | extern void iommu_domain_free(struct iommu_domain *domain); |
| 147 | extern int iommu_attach_device(struct iommu_domain *domain, |
| 148 | struct device *dev); |
| 149 | extern void iommu_detach_device(struct iommu_domain *domain, |
| 150 | struct device *dev); |
Joerg Roedel | cefc53c | 2010-01-08 13:35:09 +0100 | [diff] [blame] | 151 | extern int iommu_map(struct iommu_domain *domain, unsigned long iova, |
Ohad Ben-Cohen | 7d3002c | 2011-11-10 11:32:26 +0200 | [diff] [blame] | 152 | phys_addr_t paddr, size_t size, int prot); |
| 153 | extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, |
| 154 | size_t size); |
Varun Sethi | bb5547ac | 2013-03-29 01:23:58 +0530 | [diff] [blame] | 155 | extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova); |
Sheng Yang | dbb9fd8 | 2009-03-18 15:33:06 +0800 | [diff] [blame] | 156 | extern int iommu_domain_has_cap(struct iommu_domain *domain, |
| 157 | unsigned long cap); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 158 | extern void iommu_set_fault_handler(struct iommu_domain *domain, |
Ohad Ben-Cohen | 77ca233 | 2012-05-21 20:20:05 +0300 | [diff] [blame] | 159 | iommu_fault_handler_t handler, void *token); |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 160 | |
| 161 | extern int iommu_attach_group(struct iommu_domain *domain, |
| 162 | struct iommu_group *group); |
| 163 | extern void iommu_detach_group(struct iommu_domain *domain, |
| 164 | struct iommu_group *group); |
| 165 | extern struct iommu_group *iommu_group_alloc(void); |
| 166 | extern void *iommu_group_get_iommudata(struct iommu_group *group); |
| 167 | extern void iommu_group_set_iommudata(struct iommu_group *group, |
| 168 | void *iommu_data, |
| 169 | void (*release)(void *iommu_data)); |
| 170 | extern int iommu_group_set_name(struct iommu_group *group, const char *name); |
| 171 | extern int iommu_group_add_device(struct iommu_group *group, |
| 172 | struct device *dev); |
| 173 | extern void iommu_group_remove_device(struct device *dev); |
| 174 | extern int iommu_group_for_each_dev(struct iommu_group *group, void *data, |
| 175 | int (*fn)(struct device *, void *)); |
| 176 | extern struct iommu_group *iommu_group_get(struct device *dev); |
| 177 | extern void iommu_group_put(struct iommu_group *group); |
| 178 | extern int iommu_group_register_notifier(struct iommu_group *group, |
| 179 | struct notifier_block *nb); |
| 180 | extern int iommu_group_unregister_notifier(struct iommu_group *group, |
| 181 | struct notifier_block *nb); |
| 182 | extern int iommu_group_id(struct iommu_group *group); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 183 | |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 184 | extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, |
| 185 | void *data); |
| 186 | extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, |
| 187 | void *data); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 188 | |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 189 | /* Window handling function prototypes */ |
| 190 | extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, |
Varun Sethi | 80f97f0 | 2013-03-29 01:24:00 +0530 | [diff] [blame] | 191 | phys_addr_t offset, u64 size, |
| 192 | int prot); |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 193 | extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 194 | /** |
| 195 | * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework |
| 196 | * @domain: the iommu domain where the fault has happened |
| 197 | * @dev: the device where the fault has happened |
| 198 | * @iova: the faulting address |
| 199 | * @flags: mmu fault flags (e.g. IOMMU_FAULT_READ/IOMMU_FAULT_WRITE/...) |
| 200 | * |
| 201 | * This function should be called by the low-level IOMMU implementations |
| 202 | * whenever IOMMU faults happen, to allow high-level users, that are |
| 203 | * interested in such events, to know about them. |
| 204 | * |
| 205 | * This event may be useful for several possible use cases: |
| 206 | * - mere logging of the event |
| 207 | * - dynamic TLB/PTE loading |
| 208 | * - if restarting of the faulting device is required |
| 209 | * |
| 210 | * Returns 0 on success and an appropriate error code otherwise (if dynamic |
| 211 | * PTE/TLB loading will one day be supported, implementations will be able |
| 212 | * to tell whether it succeeded or not according to this return value). |
Ohad Ben-Cohen | 0ed6d2d | 2011-09-27 07:36:40 -0400 | [diff] [blame] | 213 | * |
| 214 | * Specifically, -ENOSYS is returned if a fault handler isn't installed |
| 215 | * (though fault handlers can also return -ENOSYS, in case they want to |
| 216 | * elicit the default behavior of the IOMMU drivers). |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 217 | */ |
| 218 | static inline int report_iommu_fault(struct iommu_domain *domain, |
| 219 | struct device *dev, unsigned long iova, int flags) |
| 220 | { |
Ohad Ben-Cohen | 0ed6d2d | 2011-09-27 07:36:40 -0400 | [diff] [blame] | 221 | int ret = -ENOSYS; |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 222 | |
| 223 | /* |
| 224 | * if upper layers showed interest and installed a fault handler, |
| 225 | * invoke it. |
| 226 | */ |
| 227 | if (domain->handler) |
Ohad Ben-Cohen | 77ca233 | 2012-05-21 20:20:05 +0300 | [diff] [blame] | 228 | ret = domain->handler(domain, dev, iova, flags, |
| 229 | domain->handler_token); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 230 | |
Shuah Khan | 56fa484 | 2013-09-24 15:21:20 -0600 | [diff] [blame] | 231 | trace_io_page_fault(dev, iova, flags); |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 232 | return ret; |
| 233 | } |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 234 | |
| 235 | #else /* CONFIG_IOMMU_API */ |
| 236 | |
Joerg Roedel | 39d4ebb | 2011-09-06 16:48:40 +0200 | [diff] [blame] | 237 | struct iommu_ops {}; |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 238 | struct iommu_group {}; |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 239 | |
Joerg Roedel | a1b60c1 | 2011-09-06 18:46:34 +0200 | [diff] [blame] | 240 | static inline bool iommu_present(struct bus_type *bus) |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 241 | { |
| 242 | return false; |
| 243 | } |
| 244 | |
Joerg Roedel | 905d66c | 2011-09-06 16:03:26 +0200 | [diff] [blame] | 245 | static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 246 | { |
| 247 | return NULL; |
| 248 | } |
| 249 | |
Alexey Kardashevskiy | b62dfd2 | 2013-11-21 17:41:14 +1100 | [diff] [blame^] | 250 | static inline struct iommu_group *iommu_group_get_by_id(int id) |
| 251 | { |
| 252 | return NULL; |
| 253 | } |
| 254 | |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 255 | static inline void iommu_domain_free(struct iommu_domain *domain) |
| 256 | { |
| 257 | } |
| 258 | |
| 259 | static inline int iommu_attach_device(struct iommu_domain *domain, |
| 260 | struct device *dev) |
| 261 | { |
| 262 | return -ENODEV; |
| 263 | } |
| 264 | |
| 265 | static inline void iommu_detach_device(struct iommu_domain *domain, |
| 266 | struct device *dev) |
| 267 | { |
| 268 | } |
| 269 | |
Joerg Roedel | cefc53c | 2010-01-08 13:35:09 +0100 | [diff] [blame] | 270 | static inline int iommu_map(struct iommu_domain *domain, unsigned long iova, |
| 271 | phys_addr_t paddr, int gfp_order, int prot) |
| 272 | { |
| 273 | return -ENODEV; |
| 274 | } |
| 275 | |
| 276 | static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova, |
| 277 | int gfp_order) |
| 278 | { |
| 279 | return -ENODEV; |
| 280 | } |
| 281 | |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 282 | static inline int iommu_domain_window_enable(struct iommu_domain *domain, |
| 283 | u32 wnd_nr, phys_addr_t paddr, |
Varun Sethi | 80f97f0 | 2013-03-29 01:24:00 +0530 | [diff] [blame] | 284 | u64 size, int prot) |
Joerg Roedel | d7787d5 | 2013-01-29 14:26:20 +0100 | [diff] [blame] | 285 | { |
| 286 | return -ENODEV; |
| 287 | } |
| 288 | |
| 289 | static inline void iommu_domain_window_disable(struct iommu_domain *domain, |
| 290 | u32 wnd_nr) |
| 291 | { |
| 292 | } |
| 293 | |
Varun Sethi | bb5547ac | 2013-03-29 01:23:58 +0530 | [diff] [blame] | 294 | static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 295 | { |
| 296 | return 0; |
| 297 | } |
| 298 | |
Sheng Yang | dbb9fd8 | 2009-03-18 15:33:06 +0800 | [diff] [blame] | 299 | static inline int domain_has_cap(struct iommu_domain *domain, |
| 300 | unsigned long cap) |
| 301 | { |
| 302 | return 0; |
| 303 | } |
| 304 | |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 305 | static inline void iommu_set_fault_handler(struct iommu_domain *domain, |
Ohad Ben-Cohen | 77ca233 | 2012-05-21 20:20:05 +0300 | [diff] [blame] | 306 | iommu_fault_handler_t handler, void *token) |
Ohad Ben-Cohen | 4f3f8d9 | 2011-09-13 15:25:23 -0400 | [diff] [blame] | 307 | { |
| 308 | } |
| 309 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 310 | static inline int iommu_attach_group(struct iommu_domain *domain, |
| 311 | struct iommu_group *group) |
Alex Williamson | 1460432 | 2011-10-21 15:56:05 -0400 | [diff] [blame] | 312 | { |
| 313 | return -ENODEV; |
| 314 | } |
| 315 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 316 | static inline void iommu_detach_group(struct iommu_domain *domain, |
| 317 | struct iommu_group *group) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 318 | { |
| 319 | } |
| 320 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 321 | static inline struct iommu_group *iommu_group_alloc(void) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 322 | { |
| 323 | return ERR_PTR(-ENODEV); |
| 324 | } |
| 325 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 326 | static inline void *iommu_group_get_iommudata(struct iommu_group *group) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 327 | { |
| 328 | return NULL; |
| 329 | } |
| 330 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 331 | static inline void iommu_group_set_iommudata(struct iommu_group *group, |
| 332 | void *iommu_data, |
| 333 | void (*release)(void *iommu_data)) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 334 | { |
| 335 | } |
| 336 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 337 | static inline int iommu_group_set_name(struct iommu_group *group, |
| 338 | const char *name) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 339 | { |
| 340 | return -ENODEV; |
| 341 | } |
| 342 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 343 | static inline int iommu_group_add_device(struct iommu_group *group, |
| 344 | struct device *dev) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 345 | { |
| 346 | return -ENODEV; |
| 347 | } |
| 348 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 349 | static inline void iommu_group_remove_device(struct device *dev) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 350 | { |
| 351 | } |
| 352 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 353 | static inline int iommu_group_for_each_dev(struct iommu_group *group, |
| 354 | void *data, |
| 355 | int (*fn)(struct device *, void *)) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 356 | { |
| 357 | return -ENODEV; |
| 358 | } |
| 359 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 360 | static inline struct iommu_group *iommu_group_get(struct device *dev) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 361 | { |
| 362 | return NULL; |
| 363 | } |
| 364 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 365 | static inline void iommu_group_put(struct iommu_group *group) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 366 | { |
| 367 | } |
| 368 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 369 | static inline int iommu_group_register_notifier(struct iommu_group *group, |
| 370 | struct notifier_block *nb) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 371 | { |
| 372 | return -ENODEV; |
| 373 | } |
| 374 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 375 | static inline int iommu_group_unregister_notifier(struct iommu_group *group, |
| 376 | struct notifier_block *nb) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 377 | { |
| 378 | return 0; |
| 379 | } |
| 380 | |
Alex Williamson | bef83de | 2012-09-24 21:23:25 -0600 | [diff] [blame] | 381 | static inline int iommu_group_id(struct iommu_group *group) |
Alex Williamson | d72e31c | 2012-05-30 14:18:53 -0600 | [diff] [blame] | 382 | { |
| 383 | return -ENODEV; |
| 384 | } |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 385 | |
Joerg Roedel | 0cd76dd | 2012-01-26 19:40:52 +0100 | [diff] [blame] | 386 | static inline int iommu_domain_get_attr(struct iommu_domain *domain, |
| 387 | enum iommu_attr attr, void *data) |
| 388 | { |
| 389 | return -EINVAL; |
| 390 | } |
| 391 | |
| 392 | static inline int iommu_domain_set_attr(struct iommu_domain *domain, |
| 393 | enum iommu_attr attr, void *data) |
| 394 | { |
| 395 | return -EINVAL; |
| 396 | } |
| 397 | |
Joerg Roedel | 4a77a6c | 2008-11-26 17:02:33 +0100 | [diff] [blame] | 398 | #endif /* CONFIG_IOMMU_API */ |
| 399 | |
| 400 | #endif /* __LINUX_IOMMU_H */ |