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8d283c35 | 1 | /* |
5d0d7156 | 2 | * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. |
8d283c35 JR |
3 | * Author: Joerg Roedel <joerg.roedel@amd.com> |
4 | * Leo Duran <leo.duran@amd.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License version 2 as published | |
8 | * by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
1965aae3 PA |
20 | #ifndef _ASM_X86_AMD_IOMMU_TYPES_H |
21 | #define _ASM_X86_AMD_IOMMU_TYPES_H | |
8d283c35 JR |
22 | |
23 | #include <linux/types.h> | |
5d214fe6 | 24 | #include <linux/mutex.h> |
8d283c35 JR |
25 | #include <linux/list.h> |
26 | #include <linux/spinlock.h> | |
27 | ||
bb52777e JR |
28 | /* |
29 | * Maximum number of IOMMUs supported | |
30 | */ | |
31 | #define MAX_IOMMUS 32 | |
32 | ||
8d283c35 JR |
33 | /* |
34 | * some size calculation constants | |
35 | */ | |
83f5aac1 | 36 | #define DEV_TABLE_ENTRY_SIZE 32 |
8d283c35 JR |
37 | #define ALIAS_TABLE_ENTRY_SIZE 2 |
38 | #define RLOOKUP_TABLE_ENTRY_SIZE (sizeof(void *)) | |
39 | ||
8d283c35 JR |
40 | /* Length of the MMIO region for the AMD IOMMU */ |
41 | #define MMIO_REGION_LENGTH 0x4000 | |
42 | ||
43 | /* Capability offsets used by the driver */ | |
44 | #define MMIO_CAP_HDR_OFFSET 0x00 | |
45 | #define MMIO_RANGE_OFFSET 0x0c | |
a80dc3e0 | 46 | #define MMIO_MISC_OFFSET 0x10 |
8d283c35 JR |
47 | |
48 | /* Masks, shifts and macros to parse the device range capability */ | |
49 | #define MMIO_RANGE_LD_MASK 0xff000000 | |
50 | #define MMIO_RANGE_FD_MASK 0x00ff0000 | |
51 | #define MMIO_RANGE_BUS_MASK 0x0000ff00 | |
52 | #define MMIO_RANGE_LD_SHIFT 24 | |
53 | #define MMIO_RANGE_FD_SHIFT 16 | |
54 | #define MMIO_RANGE_BUS_SHIFT 8 | |
55 | #define MMIO_GET_LD(x) (((x) & MMIO_RANGE_LD_MASK) >> MMIO_RANGE_LD_SHIFT) | |
56 | #define MMIO_GET_FD(x) (((x) & MMIO_RANGE_FD_MASK) >> MMIO_RANGE_FD_SHIFT) | |
57 | #define MMIO_GET_BUS(x) (((x) & MMIO_RANGE_BUS_MASK) >> MMIO_RANGE_BUS_SHIFT) | |
a80dc3e0 | 58 | #define MMIO_MSI_NUM(x) ((x) & 0x1f) |
8d283c35 JR |
59 | |
60 | /* Flag masks for the AMD IOMMU exclusion range */ | |
61 | #define MMIO_EXCL_ENABLE_MASK 0x01ULL | |
62 | #define MMIO_EXCL_ALLOW_MASK 0x02ULL | |
63 | ||
64 | /* Used offsets into the MMIO space */ | |
65 | #define MMIO_DEV_TABLE_OFFSET 0x0000 | |
66 | #define MMIO_CMD_BUF_OFFSET 0x0008 | |
67 | #define MMIO_EVT_BUF_OFFSET 0x0010 | |
68 | #define MMIO_CONTROL_OFFSET 0x0018 | |
69 | #define MMIO_EXCL_BASE_OFFSET 0x0020 | |
70 | #define MMIO_EXCL_LIMIT_OFFSET 0x0028 | |
d99ddec3 | 71 | #define MMIO_EXT_FEATURES 0x0030 |
1a29ac01 | 72 | #define MMIO_PPR_LOG_OFFSET 0x0038 |
8d283c35 JR |
73 | #define MMIO_CMD_HEAD_OFFSET 0x2000 |
74 | #define MMIO_CMD_TAIL_OFFSET 0x2008 | |
75 | #define MMIO_EVT_HEAD_OFFSET 0x2010 | |
76 | #define MMIO_EVT_TAIL_OFFSET 0x2018 | |
77 | #define MMIO_STATUS_OFFSET 0x2020 | |
1a29ac01 JR |
78 | #define MMIO_PPR_HEAD_OFFSET 0x2030 |
79 | #define MMIO_PPR_TAIL_OFFSET 0x2038 | |
8d283c35 | 80 | |
d99ddec3 JR |
81 | |
82 | /* Extended Feature Bits */ | |
83 | #define FEATURE_PREFETCH (1ULL<<0) | |
84 | #define FEATURE_PPR (1ULL<<1) | |
85 | #define FEATURE_X2APIC (1ULL<<2) | |
86 | #define FEATURE_NX (1ULL<<3) | |
87 | #define FEATURE_GT (1ULL<<4) | |
88 | #define FEATURE_IA (1ULL<<6) | |
89 | #define FEATURE_GA (1ULL<<7) | |
90 | #define FEATURE_HE (1ULL<<8) | |
91 | #define FEATURE_PC (1ULL<<9) | |
92 | ||
62f71abb JR |
93 | #define FEATURE_PASID_SHIFT 32 |
94 | #define FEATURE_PASID_MASK (0x1fULL << FEATURE_PASID_SHIFT) | |
95 | ||
519c31ba JR |
96 | /* MMIO status bits */ |
97 | #define MMIO_STATUS_COM_WAIT_INT_MASK 0x04 | |
98 | ||
90008ee4 JR |
99 | /* event logging constants */ |
100 | #define EVENT_ENTRY_SIZE 0x10 | |
101 | #define EVENT_TYPE_SHIFT 28 | |
102 | #define EVENT_TYPE_MASK 0xf | |
103 | #define EVENT_TYPE_ILL_DEV 0x1 | |
104 | #define EVENT_TYPE_IO_FAULT 0x2 | |
105 | #define EVENT_TYPE_DEV_TAB_ERR 0x3 | |
106 | #define EVENT_TYPE_PAGE_TAB_ERR 0x4 | |
107 | #define EVENT_TYPE_ILL_CMD 0x5 | |
108 | #define EVENT_TYPE_CMD_HARD_ERR 0x6 | |
109 | #define EVENT_TYPE_IOTLB_INV_TO 0x7 | |
110 | #define EVENT_TYPE_INV_DEV_REQ 0x8 | |
111 | #define EVENT_DEVID_MASK 0xffff | |
112 | #define EVENT_DEVID_SHIFT 0 | |
113 | #define EVENT_DOMID_MASK 0xffff | |
114 | #define EVENT_DOMID_SHIFT 0 | |
115 | #define EVENT_FLAGS_MASK 0xfff | |
116 | #define EVENT_FLAGS_SHIFT 0x10 | |
117 | ||
8d283c35 JR |
118 | /* feature control bits */ |
119 | #define CONTROL_IOMMU_EN 0x00ULL | |
120 | #define CONTROL_HT_TUN_EN 0x01ULL | |
121 | #define CONTROL_EVT_LOG_EN 0x02ULL | |
122 | #define CONTROL_EVT_INT_EN 0x03ULL | |
123 | #define CONTROL_COMWAIT_EN 0x04ULL | |
124 | #define CONTROL_PASSPW_EN 0x08ULL | |
125 | #define CONTROL_RESPASSPW_EN 0x09ULL | |
126 | #define CONTROL_COHERENT_EN 0x0aULL | |
127 | #define CONTROL_ISOC_EN 0x0bULL | |
128 | #define CONTROL_CMDBUF_EN 0x0cULL | |
129 | #define CONTROL_PPFLOG_EN 0x0dULL | |
130 | #define CONTROL_PPFINT_EN 0x0eULL | |
1a29ac01 | 131 | #define CONTROL_PPR_EN 0x0fULL |
cbc33a90 | 132 | #define CONTROL_GT_EN 0x10ULL |
8d283c35 JR |
133 | |
134 | /* command specific defines */ | |
135 | #define CMD_COMPL_WAIT 0x01 | |
136 | #define CMD_INV_DEV_ENTRY 0x02 | |
cb41ed85 JR |
137 | #define CMD_INV_IOMMU_PAGES 0x03 |
138 | #define CMD_INV_IOTLB_PAGES 0x04 | |
58fc7f14 | 139 | #define CMD_INV_ALL 0x08 |
8d283c35 JR |
140 | |
141 | #define CMD_COMPL_WAIT_STORE_MASK 0x01 | |
519c31ba | 142 | #define CMD_COMPL_WAIT_INT_MASK 0x02 |
8d283c35 JR |
143 | #define CMD_INV_IOMMU_PAGES_SIZE_MASK 0x01 |
144 | #define CMD_INV_IOMMU_PAGES_PDE_MASK 0x02 | |
145 | ||
999ba417 JR |
146 | #define CMD_INV_IOMMU_ALL_PAGES_ADDRESS 0x7fffffffffffffffULL |
147 | ||
8d283c35 JR |
148 | /* macros and definitions for device table entries */ |
149 | #define DEV_ENTRY_VALID 0x00 | |
150 | #define DEV_ENTRY_TRANSLATION 0x01 | |
151 | #define DEV_ENTRY_IR 0x3d | |
152 | #define DEV_ENTRY_IW 0x3e | |
9f5f5fb3 | 153 | #define DEV_ENTRY_NO_PAGE_FAULT 0x62 |
8d283c35 JR |
154 | #define DEV_ENTRY_EX 0x67 |
155 | #define DEV_ENTRY_SYSMGT1 0x68 | |
156 | #define DEV_ENTRY_SYSMGT2 0x69 | |
157 | #define DEV_ENTRY_INIT_PASS 0xb8 | |
158 | #define DEV_ENTRY_EINT_PASS 0xb9 | |
159 | #define DEV_ENTRY_NMI_PASS 0xba | |
160 | #define DEV_ENTRY_LINT0_PASS 0xbe | |
161 | #define DEV_ENTRY_LINT1_PASS 0xbf | |
38ddf41b JR |
162 | #define DEV_ENTRY_MODE_MASK 0x07 |
163 | #define DEV_ENTRY_MODE_SHIFT 0x09 | |
8d283c35 JR |
164 | |
165 | /* constants to configure the command buffer */ | |
166 | #define CMD_BUFFER_SIZE 8192 | |
549c90dc | 167 | #define CMD_BUFFER_UNINITIALIZED 1 |
8d283c35 JR |
168 | #define CMD_BUFFER_ENTRIES 512 |
169 | #define MMIO_CMD_SIZE_SHIFT 56 | |
170 | #define MMIO_CMD_SIZE_512 (0x9ULL << MMIO_CMD_SIZE_SHIFT) | |
171 | ||
335503e5 JR |
172 | /* constants for event buffer handling */ |
173 | #define EVT_BUFFER_SIZE 8192 /* 512 entries */ | |
174 | #define EVT_LEN_MASK (0x9ULL << 56) | |
175 | ||
1a29ac01 JR |
176 | /* Constants for PPR Log handling */ |
177 | #define PPR_LOG_ENTRIES 512 | |
178 | #define PPR_LOG_SIZE_SHIFT 56 | |
179 | #define PPR_LOG_SIZE_512 (0x9ULL << PPR_LOG_SIZE_SHIFT) | |
180 | #define PPR_ENTRY_SIZE 16 | |
181 | #define PPR_LOG_SIZE (PPR_ENTRY_SIZE * PPR_LOG_ENTRIES) | |
182 | ||
0feae533 | 183 | #define PAGE_MODE_NONE 0x00 |
8d283c35 JR |
184 | #define PAGE_MODE_1_LEVEL 0x01 |
185 | #define PAGE_MODE_2_LEVEL 0x02 | |
186 | #define PAGE_MODE_3_LEVEL 0x03 | |
9355a081 JR |
187 | #define PAGE_MODE_4_LEVEL 0x04 |
188 | #define PAGE_MODE_5_LEVEL 0x05 | |
189 | #define PAGE_MODE_6_LEVEL 0x06 | |
8d283c35 | 190 | |
9355a081 JR |
191 | #define PM_LEVEL_SHIFT(x) (12 + ((x) * 9)) |
192 | #define PM_LEVEL_SIZE(x) (((x) < 6) ? \ | |
193 | ((1ULL << PM_LEVEL_SHIFT((x))) - 1): \ | |
194 | (0xffffffffffffffffULL)) | |
195 | #define PM_LEVEL_INDEX(x, a) (((a) >> PM_LEVEL_SHIFT((x))) & 0x1ffULL) | |
50020fb6 JR |
196 | #define PM_LEVEL_ENC(x) (((x) << 9) & 0xe00ULL) |
197 | #define PM_LEVEL_PDE(x, a) ((a) | PM_LEVEL_ENC((x)) | \ | |
198 | IOMMU_PTE_P | IOMMU_PTE_IR | IOMMU_PTE_IW) | |
a6b256b4 | 199 | #define PM_PTE_LEVEL(pte) (((pte) >> 9) & 0x7ULL) |
50020fb6 | 200 | |
abdc5eb3 JR |
201 | #define PM_MAP_4k 0 |
202 | #define PM_ADDR_MASK 0x000ffffffffff000ULL | |
203 | #define PM_MAP_MASK(lvl) (PM_ADDR_MASK & \ | |
204 | (~((1ULL << (12 + ((lvl) * 9))) - 1))) | |
205 | #define PM_ALIGNED(lvl, addr) ((PM_MAP_MASK(lvl) & (addr)) == (addr)) | |
8d283c35 | 206 | |
cbb9d729 JR |
207 | /* |
208 | * Returns the page table level to use for a given page size | |
209 | * Pagesize is expected to be a power-of-two | |
210 | */ | |
211 | #define PAGE_SIZE_LEVEL(pagesize) \ | |
212 | ((__ffs(pagesize) - 12) / 9) | |
213 | /* | |
214 | * Returns the number of ptes to use for a given page size | |
215 | * Pagesize is expected to be a power-of-two | |
216 | */ | |
217 | #define PAGE_SIZE_PTE_COUNT(pagesize) \ | |
218 | (1ULL << ((__ffs(pagesize) - 12) % 9)) | |
219 | ||
220 | /* | |
221 | * Aligns a given io-virtual address to a given page size | |
222 | * Pagesize is expected to be a power-of-two | |
223 | */ | |
224 | #define PAGE_SIZE_ALIGN(address, pagesize) \ | |
225 | ((address) & ~((pagesize) - 1)) | |
226 | /* | |
227 | * Creates an IOMMU PTE for an address an a given pagesize | |
228 | * The PTE has no permission bits set | |
229 | * Pagesize is expected to be a power-of-two larger than 4096 | |
230 | */ | |
231 | #define PAGE_SIZE_PTE(address, pagesize) \ | |
232 | (((address) | ((pagesize) - 1)) & \ | |
233 | (~(pagesize >> 1)) & PM_ADDR_MASK) | |
234 | ||
24cd7723 JR |
235 | /* |
236 | * Takes a PTE value with mode=0x07 and returns the page size it maps | |
237 | */ | |
238 | #define PTE_PAGE_SIZE(pte) \ | |
239 | (1ULL << (1 + ffz(((pte) | 0xfffULL)))) | |
240 | ||
8d283c35 | 241 | #define IOMMU_PTE_P (1ULL << 0) |
38ddf41b | 242 | #define IOMMU_PTE_TV (1ULL << 1) |
8d283c35 JR |
243 | #define IOMMU_PTE_U (1ULL << 59) |
244 | #define IOMMU_PTE_FC (1ULL << 60) | |
245 | #define IOMMU_PTE_IR (1ULL << 61) | |
246 | #define IOMMU_PTE_IW (1ULL << 62) | |
247 | ||
ee6c2868 | 248 | #define DTE_FLAG_IOTLB (0x01UL << 32) |
fd7b5535 | 249 | |
8d283c35 JR |
250 | #define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL) |
251 | #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_P) | |
252 | #define IOMMU_PTE_PAGE(pte) (phys_to_virt((pte) & IOMMU_PAGE_MASK)) | |
253 | #define IOMMU_PTE_MODE(pte) (((pte) >> 9) & 0x07) | |
254 | ||
255 | #define IOMMU_PROT_MASK 0x03 | |
256 | #define IOMMU_PROT_IR 0x01 | |
257 | #define IOMMU_PROT_IW 0x02 | |
258 | ||
259 | /* IOMMU capabilities */ | |
260 | #define IOMMU_CAP_IOTLB 24 | |
261 | #define IOMMU_CAP_NPCACHE 26 | |
d99ddec3 | 262 | #define IOMMU_CAP_EFR 27 |
8d283c35 JR |
263 | |
264 | #define MAX_DOMAIN_ID 65536 | |
265 | ||
90008ee4 JR |
266 | /* FIXME: move this macro to <linux/pci.h> */ |
267 | #define PCI_BUS(x) (((x) >> 8) & 0xff) | |
268 | ||
9fdb19d6 JR |
269 | /* Protection domain flags */ |
270 | #define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ | |
e2dc14a2 JR |
271 | #define PD_DEFAULT_MASK (1UL << 1) /* domain is a default dma_ops |
272 | domain for an IOMMU */ | |
0feae533 JR |
273 | #define PD_PASSTHROUGH_MASK (1UL << 2) /* domain has no page |
274 | translation */ | |
275 | ||
fefda117 JR |
276 | extern bool amd_iommu_dump; |
277 | #define DUMP_printk(format, arg...) \ | |
278 | do { \ | |
279 | if (amd_iommu_dump) \ | |
4c6f40d4 | 280 | printk(KERN_INFO "AMD-Vi: " format, ## arg); \ |
fefda117 | 281 | } while(0); |
9fdb19d6 | 282 | |
318afd41 JR |
283 | /* global flag if IOMMUs cache non-present entries */ |
284 | extern bool amd_iommu_np_cache; | |
60f723b4 JR |
285 | /* Only true if all IOMMUs support device IOTLBs */ |
286 | extern bool amd_iommu_iotlb_sup; | |
318afd41 | 287 | |
3bd22172 JR |
288 | /* |
289 | * Make iterating over all IOMMUs easier | |
290 | */ | |
291 | #define for_each_iommu(iommu) \ | |
292 | list_for_each_entry((iommu), &amd_iommu_list, list) | |
293 | #define for_each_iommu_safe(iommu, next) \ | |
294 | list_for_each_entry_safe((iommu), (next), &amd_iommu_list, list) | |
295 | ||
384de729 JR |
296 | #define APERTURE_RANGE_SHIFT 27 /* 128 MB */ |
297 | #define APERTURE_RANGE_SIZE (1ULL << APERTURE_RANGE_SHIFT) | |
298 | #define APERTURE_RANGE_PAGES (APERTURE_RANGE_SIZE >> PAGE_SHIFT) | |
299 | #define APERTURE_MAX_RANGES 32 /* allows 4GB of DMA address space */ | |
300 | #define APERTURE_RANGE_INDEX(a) ((a) >> APERTURE_RANGE_SHIFT) | |
301 | #define APERTURE_PAGE_INDEX(a) (((a) >> 21) & 0x3fULL) | |
9fdb19d6 | 302 | |
5694703f JR |
303 | /* |
304 | * This structure contains generic data for IOMMU protection domains | |
305 | * independent of their use. | |
306 | */ | |
8d283c35 | 307 | struct protection_domain { |
aeb26f55 | 308 | struct list_head list; /* for list of all protection domains */ |
7c392cbe | 309 | struct list_head dev_list; /* List of all devices in this domain */ |
9fdb19d6 | 310 | spinlock_t lock; /* mostly used to lock the page table*/ |
5d214fe6 | 311 | struct mutex api_lock; /* protect page tables in the iommu-api path */ |
9fdb19d6 JR |
312 | u16 id; /* the domain id written to the device table */ |
313 | int mode; /* paging mode (0-6 levels) */ | |
314 | u64 *pt_root; /* page table root pointer */ | |
315 | unsigned long flags; /* flags to find out type of domain */ | |
04bfdd84 | 316 | bool updated; /* complete domain flush required */ |
863c74eb | 317 | unsigned dev_cnt; /* devices assigned to this domain */ |
c4596114 | 318 | unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */ |
9fdb19d6 | 319 | void *priv; /* private data */ |
c4596114 | 320 | |
8d283c35 JR |
321 | }; |
322 | ||
657cbb6b JR |
323 | /* |
324 | * This struct contains device specific data for the IOMMU | |
325 | */ | |
326 | struct iommu_dev_data { | |
7c392cbe | 327 | struct list_head list; /* For domain->dev_list */ |
8fa5f802 | 328 | struct list_head dev_data_list; /* For global dev_data_list */ |
71f77580 | 329 | struct iommu_dev_data *alias_data;/* The alias dev_data */ |
657cbb6b | 330 | struct protection_domain *domain; /* Domain the device is bound to */ |
24100055 | 331 | atomic_t bind; /* Domain attach reverent count */ |
f62dda66 | 332 | u16 devid; /* PCI Device ID */ |
ea61cddb JR |
333 | struct { |
334 | bool enabled; | |
335 | int qdep; | |
336 | } ats; /* ATS state */ | |
657cbb6b JR |
337 | }; |
338 | ||
c3239567 JR |
339 | /* |
340 | * For dynamic growth the aperture size is split into ranges of 128MB of | |
341 | * DMA address space each. This struct represents one such range. | |
342 | */ | |
343 | struct aperture_range { | |
344 | ||
345 | /* address allocation bitmap */ | |
346 | unsigned long *bitmap; | |
347 | ||
348 | /* | |
349 | * Array of PTE pages for the aperture. In this array we save all the | |
350 | * leaf pages of the domain page table used for the aperture. This way | |
351 | * we don't need to walk the page table to find a specific PTE. We can | |
352 | * just calculate its address in constant time. | |
353 | */ | |
354 | u64 *pte_pages[64]; | |
384de729 JR |
355 | |
356 | unsigned long offset; | |
c3239567 JR |
357 | }; |
358 | ||
5694703f JR |
359 | /* |
360 | * Data container for a dma_ops specific protection domain | |
361 | */ | |
8d283c35 JR |
362 | struct dma_ops_domain { |
363 | struct list_head list; | |
5694703f JR |
364 | |
365 | /* generic protection domain information */ | |
8d283c35 | 366 | struct protection_domain domain; |
5694703f JR |
367 | |
368 | /* size of the aperture for the mappings */ | |
8d283c35 | 369 | unsigned long aperture_size; |
5694703f JR |
370 | |
371 | /* address we start to search for free addresses */ | |
803b8cb4 | 372 | unsigned long next_address; |
5694703f | 373 | |
c3239567 | 374 | /* address space relevant data */ |
384de729 | 375 | struct aperture_range *aperture[APERTURE_MAX_RANGES]; |
1c655773 JR |
376 | |
377 | /* This will be set to true when TLB needs to be flushed */ | |
378 | bool need_flush; | |
bd60b735 JR |
379 | |
380 | /* | |
381 | * if this is a preallocated domain, keep the device for which it was | |
382 | * preallocated in this variable | |
383 | */ | |
384 | u16 target_dev; | |
8d283c35 JR |
385 | }; |
386 | ||
5694703f JR |
387 | /* |
388 | * Structure where we save information about one hardware AMD IOMMU in the | |
389 | * system. | |
390 | */ | |
8d283c35 JR |
391 | struct amd_iommu { |
392 | struct list_head list; | |
5694703f | 393 | |
bb52777e JR |
394 | /* Index within the IOMMU array */ |
395 | int index; | |
396 | ||
5694703f | 397 | /* locks the accesses to the hardware */ |
8d283c35 JR |
398 | spinlock_t lock; |
399 | ||
3eaf28a1 JR |
400 | /* Pointer to PCI device of this IOMMU */ |
401 | struct pci_dev *dev; | |
402 | ||
5694703f | 403 | /* physical address of MMIO space */ |
8d283c35 | 404 | u64 mmio_phys; |
5694703f | 405 | /* virtual address of MMIO space */ |
8d283c35 | 406 | u8 *mmio_base; |
5694703f JR |
407 | |
408 | /* capabilities of that IOMMU read from ACPI */ | |
8d283c35 | 409 | u32 cap; |
5694703f | 410 | |
e9bf5197 JR |
411 | /* flags read from acpi table */ |
412 | u8 acpi_flags; | |
413 | ||
d99ddec3 JR |
414 | /* Extended features */ |
415 | u64 features; | |
416 | ||
eac9fbc6 RK |
417 | /* |
418 | * Capability pointer. There could be more than one IOMMU per PCI | |
419 | * device function if there are more than one AMD IOMMU capability | |
420 | * pointers. | |
421 | */ | |
422 | u16 cap_ptr; | |
423 | ||
ee893c24 JR |
424 | /* pci domain of this IOMMU */ |
425 | u16 pci_seg; | |
426 | ||
5694703f | 427 | /* first device this IOMMU handles. read from PCI */ |
8d283c35 | 428 | u16 first_device; |
5694703f | 429 | /* last device this IOMMU handles. read from PCI */ |
8d283c35 | 430 | u16 last_device; |
5694703f JR |
431 | |
432 | /* start of exclusion range of that IOMMU */ | |
8d283c35 | 433 | u64 exclusion_start; |
5694703f | 434 | /* length of exclusion range of that IOMMU */ |
8d283c35 JR |
435 | u64 exclusion_length; |
436 | ||
5694703f | 437 | /* command buffer virtual address */ |
8d283c35 | 438 | u8 *cmd_buf; |
5694703f | 439 | /* size of command buffer */ |
8d283c35 JR |
440 | u32 cmd_buf_size; |
441 | ||
335503e5 JR |
442 | /* size of event buffer */ |
443 | u32 evt_buf_size; | |
eac9fbc6 RK |
444 | /* event buffer virtual address */ |
445 | u8 *evt_buf; | |
a80dc3e0 JR |
446 | /* MSI number for event interrupt */ |
447 | u16 evt_msi_num; | |
335503e5 | 448 | |
1a29ac01 JR |
449 | /* Base of the PPR log, if present */ |
450 | u8 *ppr_log; | |
451 | ||
a80dc3e0 JR |
452 | /* true if interrupts for this IOMMU are already enabled */ |
453 | bool int_enabled; | |
454 | ||
eac9fbc6 | 455 | /* if one, we need to send a completion wait command */ |
0cfd7aa9 | 456 | bool need_sync; |
eac9fbc6 | 457 | |
5694703f | 458 | /* default dma_ops domain for that IOMMU */ |
8d283c35 | 459 | struct dma_ops_domain *default_dom; |
4c894f47 JR |
460 | |
461 | /* | |
5bcd757f MG |
462 | * We can't rely on the BIOS to restore all values on reinit, so we |
463 | * need to stash them | |
4c894f47 | 464 | */ |
5bcd757f MG |
465 | |
466 | /* The iommu BAR */ | |
467 | u32 stored_addr_lo; | |
468 | u32 stored_addr_hi; | |
469 | ||
470 | /* | |
471 | * Each iommu has 6 l1s, each of which is documented as having 0x12 | |
472 | * registers | |
473 | */ | |
474 | u32 stored_l1[6][0x12]; | |
475 | ||
476 | /* The l2 indirect registers */ | |
477 | u32 stored_l2[0x83]; | |
8d283c35 JR |
478 | }; |
479 | ||
5694703f JR |
480 | /* |
481 | * List with all IOMMUs in the system. This list is not locked because it is | |
482 | * only written and read at driver initialization or suspend time | |
483 | */ | |
8d283c35 JR |
484 | extern struct list_head amd_iommu_list; |
485 | ||
bb52777e JR |
486 | /* |
487 | * Array with pointers to each IOMMU struct | |
488 | * The indices are referenced in the protection domains | |
489 | */ | |
490 | extern struct amd_iommu *amd_iommus[MAX_IOMMUS]; | |
491 | ||
492 | /* Number of IOMMUs present in the system */ | |
493 | extern int amd_iommus_present; | |
494 | ||
aeb26f55 JR |
495 | /* |
496 | * Declarations for the global list of all protection domains | |
497 | */ | |
498 | extern spinlock_t amd_iommu_pd_lock; | |
499 | extern struct list_head amd_iommu_pd_list; | |
500 | ||
5694703f JR |
501 | /* |
502 | * Structure defining one entry in the device table | |
503 | */ | |
8d283c35 | 504 | struct dev_table_entry { |
ee6c2868 | 505 | u64 data[4]; |
8d283c35 JR |
506 | }; |
507 | ||
5694703f JR |
508 | /* |
509 | * One entry for unity mappings parsed out of the ACPI table. | |
510 | */ | |
8d283c35 JR |
511 | struct unity_map_entry { |
512 | struct list_head list; | |
5694703f JR |
513 | |
514 | /* starting device id this entry is used for (including) */ | |
8d283c35 | 515 | u16 devid_start; |
5694703f | 516 | /* end device id this entry is used for (including) */ |
8d283c35 | 517 | u16 devid_end; |
5694703f JR |
518 | |
519 | /* start address to unity map (including) */ | |
8d283c35 | 520 | u64 address_start; |
5694703f | 521 | /* end address to unity map (including) */ |
8d283c35 | 522 | u64 address_end; |
5694703f JR |
523 | |
524 | /* required protection */ | |
8d283c35 JR |
525 | int prot; |
526 | }; | |
527 | ||
5694703f JR |
528 | /* |
529 | * List of all unity mappings. It is not locked because as runtime it is only | |
530 | * read. It is created at ACPI table parsing time. | |
531 | */ | |
8d283c35 JR |
532 | extern struct list_head amd_iommu_unity_map; |
533 | ||
5694703f JR |
534 | /* |
535 | * Data structures for device handling | |
536 | */ | |
537 | ||
538 | /* | |
539 | * Device table used by hardware. Read and write accesses by software are | |
540 | * locked with the amd_iommu_pd_table lock. | |
541 | */ | |
8d283c35 | 542 | extern struct dev_table_entry *amd_iommu_dev_table; |
5694703f JR |
543 | |
544 | /* | |
545 | * Alias table to find requestor ids to device ids. Not locked because only | |
546 | * read on runtime. | |
547 | */ | |
8d283c35 | 548 | extern u16 *amd_iommu_alias_table; |
5694703f JR |
549 | |
550 | /* | |
551 | * Reverse lookup table to find the IOMMU which translates a specific device. | |
552 | */ | |
8d283c35 JR |
553 | extern struct amd_iommu **amd_iommu_rlookup_table; |
554 | ||
5694703f | 555 | /* size of the dma_ops aperture as power of 2 */ |
8d283c35 JR |
556 | extern unsigned amd_iommu_aperture_order; |
557 | ||
5694703f | 558 | /* largest PCI device id we expect translation requests for */ |
8d283c35 JR |
559 | extern u16 amd_iommu_last_bdf; |
560 | ||
5694703f | 561 | /* allocation bitmap for domain ids */ |
8d283c35 JR |
562 | extern unsigned long *amd_iommu_pd_alloc_bitmap; |
563 | ||
afa9fdc2 FT |
564 | /* |
565 | * If true, the addresses will be flushed on unmap time, not when | |
566 | * they are reused | |
567 | */ | |
568 | extern bool amd_iommu_unmap_flush; | |
569 | ||
62f71abb JR |
570 | /* Smallest number of PASIDs supported by any IOMMU in the system */ |
571 | extern u32 amd_iommu_max_pasids; | |
572 | ||
d591b0a3 JR |
573 | /* takes bus and device/function and returns the device id |
574 | * FIXME: should that be in generic PCI code? */ | |
575 | static inline u16 calc_devid(u8 bus, u8 devfn) | |
576 | { | |
577 | return (((u16)bus) << 8) | devfn; | |
578 | } | |
579 | ||
a9dddbe0 JR |
580 | #ifdef CONFIG_AMD_IOMMU_STATS |
581 | ||
582 | struct __iommu_counter { | |
583 | char *name; | |
584 | struct dentry *dent; | |
585 | u64 value; | |
586 | }; | |
587 | ||
588 | #define DECLARE_STATS_COUNTER(nm) \ | |
589 | static struct __iommu_counter nm = { \ | |
590 | .name = #nm, \ | |
591 | } | |
592 | ||
593 | #define INC_STATS_COUNTER(name) name.value += 1 | |
594 | #define ADD_STATS_COUNTER(name, x) name.value += (x) | |
595 | #define SUB_STATS_COUNTER(name, x) name.value -= (x) | |
596 | ||
597 | #else /* CONFIG_AMD_IOMMU_STATS */ | |
598 | ||
599 | #define DECLARE_STATS_COUNTER(name) | |
600 | #define INC_STATS_COUNTER(name) | |
601 | #define ADD_STATS_COUNTER(name, x) | |
602 | #define SUB_STATS_COUNTER(name, x) | |
603 | ||
604 | #endif /* CONFIG_AMD_IOMMU_STATS */ | |
605 | ||
1965aae3 | 606 | #endif /* _ASM_X86_AMD_IOMMU_TYPES_H */ |