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ba395927 | 1 | /* |
2f26e0a9 DW |
2 | * Copyright © 2006-2015, Intel Corporation. |
3 | * | |
4 | * Authors: Ashok Raj <ashok.raj@intel.com> | |
5 | * Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> | |
6 | * David Woodhouse <David.Woodhouse@intel.com> | |
ba395927 KA |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
19 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
ba395927 KA |
20 | */ |
21 | ||
22 | #ifndef _INTEL_IOMMU_H_ | |
23 | #define _INTEL_IOMMU_H_ | |
24 | ||
25 | #include <linux/types.h> | |
38717946 | 26 | #include <linux/iova.h> |
ba395927 | 27 | #include <linux/io.h> |
2f26e0a9 | 28 | #include <linux/idr.h> |
38717946 | 29 | #include <linux/dma_remapping.h> |
2f26e0a9 DW |
30 | #include <linux/mmu_notifier.h> |
31 | #include <linux/list.h> | |
b0119e87 | 32 | #include <linux/iommu.h> |
61012985 | 33 | #include <linux/io-64-nonatomic-lo-hi.h> |
9ddbfb42 | 34 | #include <linux/dmar.h> |
61012985 | 35 | |
fe962e90 | 36 | #include <asm/cacheflush.h> |
5b6985ce | 37 | #include <asm/iommu.h> |
f661197e | 38 | |
ba395927 KA |
39 | /* |
40 | * Intel IOMMU register specification per version 1.0 public spec. | |
41 | */ | |
42 | ||
43 | #define DMAR_VER_REG 0x0 /* Arch version supported by this IOMMU */ | |
44 | #define DMAR_CAP_REG 0x8 /* Hardware supported capabilities */ | |
45 | #define DMAR_ECAP_REG 0x10 /* Extended capabilities supported */ | |
46 | #define DMAR_GCMD_REG 0x18 /* Global command register */ | |
47 | #define DMAR_GSTS_REG 0x1c /* Global status register */ | |
48 | #define DMAR_RTADDR_REG 0x20 /* Root entry table */ | |
49 | #define DMAR_CCMD_REG 0x28 /* Context command reg */ | |
50 | #define DMAR_FSTS_REG 0x34 /* Fault Status register */ | |
51 | #define DMAR_FECTL_REG 0x38 /* Fault control register */ | |
52 | #define DMAR_FEDATA_REG 0x3c /* Fault event interrupt data register */ | |
53 | #define DMAR_FEADDR_REG 0x40 /* Fault event interrupt addr register */ | |
54 | #define DMAR_FEUADDR_REG 0x44 /* Upper address register */ | |
55 | #define DMAR_AFLOG_REG 0x58 /* Advanced Fault control */ | |
56 | #define DMAR_PMEN_REG 0x64 /* Enable Protected Memory Region */ | |
57 | #define DMAR_PLMBASE_REG 0x68 /* PMRR Low addr */ | |
58 | #define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */ | |
59 | #define DMAR_PHMBASE_REG 0x70 /* pmrr high base addr */ | |
60 | #define DMAR_PHMLIMIT_REG 0x78 /* pmrr high limit */ | |
fe962e90 SS |
61 | #define DMAR_IQH_REG 0x80 /* Invalidation queue head register */ |
62 | #define DMAR_IQT_REG 0x88 /* Invalidation queue tail register */ | |
6ba6c3a4 | 63 | #define DMAR_IQ_SHIFT 4 /* Invalidation queue head/tail shift */ |
fe962e90 | 64 | #define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */ |
82aeef0b | 65 | #define DMAR_ICS_REG 0x9c /* Invalidation complete status register */ |
2ae21010 | 66 | #define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */ |
1208225c DW |
67 | #define DMAR_PQH_REG 0xc0 /* Page request queue head register */ |
68 | #define DMAR_PQT_REG 0xc8 /* Page request queue tail register */ | |
69 | #define DMAR_PQA_REG 0xd0 /* Page request queue address register */ | |
70 | #define DMAR_PRS_REG 0xdc /* Page request status register */ | |
71 | #define DMAR_PECTL_REG 0xe0 /* Page request event control register */ | |
72 | #define DMAR_PEDATA_REG 0xe4 /* Page request event interrupt data register */ | |
73 | #define DMAR_PEADDR_REG 0xe8 /* Page request event interrupt addr register */ | |
74 | #define DMAR_PEUADDR_REG 0xec /* Page request event Upper address register */ | |
ba395927 KA |
75 | |
76 | #define OFFSET_STRIDE (9) | |
50d3fb56 | 77 | |
50d3fb56 DW |
78 | #define dmar_readq(a) readq(a) |
79 | #define dmar_writeq(a,v) writeq(v,a) | |
ba395927 KA |
80 | |
81 | #define DMAR_VER_MAJOR(v) (((v) & 0xf0) >> 4) | |
82 | #define DMAR_VER_MINOR(v) ((v) & 0x0f) | |
83 | ||
84 | /* | |
85 | * Decoding Capability Register | |
86 | */ | |
f1ac10c2 | 87 | #define cap_5lp_support(c) (((c) >> 60) & 1) |
07c09787 | 88 | #define cap_pi_support(c) (((c) >> 59) & 1) |
59103caa | 89 | #define cap_fl1gp_support(c) (((c) >> 56) & 1) |
ba395927 KA |
90 | #define cap_read_drain(c) (((c) >> 55) & 1) |
91 | #define cap_write_drain(c) (((c) >> 54) & 1) | |
92 | #define cap_max_amask_val(c) (((c) >> 48) & 0x3f) | |
93 | #define cap_num_fault_regs(c) ((((c) >> 40) & 0xff) + 1) | |
94 | #define cap_pgsel_inv(c) (((c) >> 39) & 1) | |
95 | ||
96 | #define cap_super_page_val(c) (((c) >> 34) & 0xf) | |
97 | #define cap_super_offset(c) (((find_first_bit(&cap_super_page_val(c), 4)) \ | |
98 | * OFFSET_STRIDE) + 21) | |
99 | ||
100 | #define cap_fault_reg_offset(c) ((((c) >> 24) & 0x3ff) * 16) | |
101 | #define cap_max_fault_reg_offset(c) \ | |
102 | (cap_fault_reg_offset(c) + cap_num_fault_regs(c) * 16) | |
103 | ||
104 | #define cap_zlr(c) (((c) >> 22) & 1) | |
105 | #define cap_isoch(c) (((c) >> 23) & 1) | |
106 | #define cap_mgaw(c) ((((c) >> 16) & 0x3f) + 1) | |
107 | #define cap_sagaw(c) (((c) >> 8) & 0x1f) | |
108 | #define cap_caching_mode(c) (((c) >> 7) & 1) | |
109 | #define cap_phmr(c) (((c) >> 6) & 1) | |
110 | #define cap_plmr(c) (((c) >> 5) & 1) | |
111 | #define cap_rwbf(c) (((c) >> 4) & 1) | |
112 | #define cap_afl(c) (((c) >> 3) & 1) | |
113 | #define cap_ndoms(c) (((unsigned long)1) << (4 + 2 * ((c) & 0x7))) | |
114 | /* | |
115 | * Extended Capability Register | |
116 | */ | |
117 | ||
0f725561 | 118 | #define ecap_dit(e) ((e >> 41) & 0x1) |
bd00c606 | 119 | #define ecap_pasid(e) ((e >> 40) & 0x1) |
4423f5e7 DW |
120 | #define ecap_pss(e) ((e >> 35) & 0x1f) |
121 | #define ecap_eafs(e) ((e >> 34) & 0x1) | |
122 | #define ecap_nwfs(e) ((e >> 33) & 0x1) | |
123 | #define ecap_srs(e) ((e >> 31) & 0x1) | |
124 | #define ecap_ers(e) ((e >> 30) & 0x1) | |
125 | #define ecap_prs(e) ((e >> 29) & 0x1) | |
2db1581e | 126 | #define ecap_broken_pasid(e) ((e >> 28) & 0x1) |
4423f5e7 DW |
127 | #define ecap_dis(e) ((e >> 27) & 0x1) |
128 | #define ecap_nest(e) ((e >> 26) & 0x1) | |
129 | #define ecap_mts(e) ((e >> 25) & 0x1) | |
130 | #define ecap_ecs(e) ((e >> 24) & 0x1) | |
ba395927 | 131 | #define ecap_iotlb_offset(e) ((((e) >> 8) & 0x3ff) * 16) |
44caf2f3 | 132 | #define ecap_max_iotlb_offset(e) (ecap_iotlb_offset(e) + 16) |
ba395927 | 133 | #define ecap_coherent(e) ((e) & 0x1) |
fe962e90 | 134 | #define ecap_qis(e) ((e) & 0x2) |
4ed0d3e6 | 135 | #define ecap_pass_through(e) ((e >> 6) & 0x1) |
ad3ad3f6 SS |
136 | #define ecap_eim_support(e) ((e >> 4) & 0x1) |
137 | #define ecap_ir_support(e) ((e >> 3) & 0x1) | |
93a23a72 | 138 | #define ecap_dev_iotlb_support(e) (((e) >> 2) & 0x1) |
b6fcb33a | 139 | #define ecap_max_handle_mask(e) ((e >> 20) & 0xf) |
58c610bd | 140 | #define ecap_sc_support(e) ((e >> 7) & 0x1) /* Snooping Control */ |
ba395927 KA |
141 | |
142 | /* IOTLB_REG */ | |
3481f210 | 143 | #define DMA_TLB_FLUSH_GRANU_OFFSET 60 |
ba395927 KA |
144 | #define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60) |
145 | #define DMA_TLB_DSI_FLUSH (((u64)2) << 60) | |
146 | #define DMA_TLB_PSI_FLUSH (((u64)3) << 60) | |
aaa59306 CT |
147 | #define DMA_TLB_IIRG(type) ((type >> 60) & 3) |
148 | #define DMA_TLB_IAIG(val) (((val) >> 57) & 3) | |
ba395927 KA |
149 | #define DMA_TLB_READ_DRAIN (((u64)1) << 49) |
150 | #define DMA_TLB_WRITE_DRAIN (((u64)1) << 48) | |
151 | #define DMA_TLB_DID(id) (((u64)((id) & 0xffff)) << 32) | |
152 | #define DMA_TLB_IVT (((u64)1) << 63) | |
153 | #define DMA_TLB_IH_NONLEAF (((u64)1) << 6) | |
154 | #define DMA_TLB_MAX_SIZE (0x3f) | |
155 | ||
fe962e90 | 156 | /* INVALID_DESC */ |
3481f210 | 157 | #define DMA_CCMD_INVL_GRANU_OFFSET 61 |
aaa59306 CT |
158 | #define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 4) |
159 | #define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 4) | |
160 | #define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 4) | |
fe962e90 SS |
161 | #define DMA_ID_TLB_READ_DRAIN (((u64)1) << 7) |
162 | #define DMA_ID_TLB_WRITE_DRAIN (((u64)1) << 6) | |
163 | #define DMA_ID_TLB_DID(id) (((u64)((id & 0xffff) << 16))) | |
164 | #define DMA_ID_TLB_IH_NONLEAF (((u64)1) << 6) | |
165 | #define DMA_ID_TLB_ADDR(addr) (addr) | |
166 | #define DMA_ID_TLB_ADDR_MASK(mask) (mask) | |
167 | ||
f8bab735 | 168 | /* PMEN_REG */ |
169 | #define DMA_PMEN_EPM (((u32)1)<<31) | |
170 | #define DMA_PMEN_PRS (((u32)1)<<0) | |
171 | ||
ba395927 KA |
172 | /* GCMD_REG */ |
173 | #define DMA_GCMD_TE (((u32)1) << 31) | |
174 | #define DMA_GCMD_SRTP (((u32)1) << 30) | |
175 | #define DMA_GCMD_SFL (((u32)1) << 29) | |
176 | #define DMA_GCMD_EAFL (((u32)1) << 28) | |
177 | #define DMA_GCMD_WBF (((u32)1) << 27) | |
2ae21010 SS |
178 | #define DMA_GCMD_QIE (((u32)1) << 26) |
179 | #define DMA_GCMD_SIRTP (((u32)1) << 24) | |
180 | #define DMA_GCMD_IRE (((u32) 1) << 25) | |
161fde08 | 181 | #define DMA_GCMD_CFI (((u32) 1) << 23) |
ba395927 KA |
182 | |
183 | /* GSTS_REG */ | |
184 | #define DMA_GSTS_TES (((u32)1) << 31) | |
185 | #define DMA_GSTS_RTPS (((u32)1) << 30) | |
186 | #define DMA_GSTS_FLS (((u32)1) << 29) | |
187 | #define DMA_GSTS_AFLS (((u32)1) << 28) | |
188 | #define DMA_GSTS_WBFS (((u32)1) << 27) | |
2ae21010 SS |
189 | #define DMA_GSTS_QIES (((u32)1) << 26) |
190 | #define DMA_GSTS_IRTPS (((u32)1) << 24) | |
191 | #define DMA_GSTS_IRES (((u32)1) << 25) | |
161fde08 | 192 | #define DMA_GSTS_CFIS (((u32)1) << 23) |
ba395927 | 193 | |
4423f5e7 DW |
194 | /* DMA_RTADDR_REG */ |
195 | #define DMA_RTADDR_RTT (((u64)1) << 11) | |
196 | ||
ba395927 KA |
197 | /* CCMD_REG */ |
198 | #define DMA_CCMD_ICC (((u64)1) << 63) | |
199 | #define DMA_CCMD_GLOBAL_INVL (((u64)1) << 61) | |
200 | #define DMA_CCMD_DOMAIN_INVL (((u64)2) << 61) | |
201 | #define DMA_CCMD_DEVICE_INVL (((u64)3) << 61) | |
202 | #define DMA_CCMD_FM(m) (((u64)((m) & 0x3)) << 32) | |
203 | #define DMA_CCMD_MASK_NOBIT 0 | |
204 | #define DMA_CCMD_MASK_1BIT 1 | |
205 | #define DMA_CCMD_MASK_2BIT 2 | |
206 | #define DMA_CCMD_MASK_3BIT 3 | |
207 | #define DMA_CCMD_SID(s) (((u64)((s) & 0xffff)) << 16) | |
208 | #define DMA_CCMD_DID(d) ((u64)((d) & 0xffff)) | |
209 | ||
210 | /* FECTL_REG */ | |
211 | #define DMA_FECTL_IM (((u32)1) << 31) | |
212 | ||
213 | /* FSTS_REG */ | |
b1d03c1d DS |
214 | #define DMA_FSTS_PFO (1 << 0) /* Primary Fault Overflow */ |
215 | #define DMA_FSTS_PPF (1 << 1) /* Primary Pending Fault */ | |
216 | #define DMA_FSTS_IQE (1 << 4) /* Invalidation Queue Error */ | |
217 | #define DMA_FSTS_ICE (1 << 5) /* Invalidation Completion Error */ | |
218 | #define DMA_FSTS_ITE (1 << 6) /* Invalidation Time-out Error */ | |
219 | #define DMA_FSTS_PRO (1 << 7) /* Page Request Overflow */ | |
ba395927 KA |
220 | #define dma_fsts_fault_record_index(s) (((s) >> 8) & 0xff) |
221 | ||
222 | /* FRCD_REG, 32 bits access */ | |
223 | #define DMA_FRCD_F (((u32)1) << 31) | |
224 | #define dma_frcd_type(d) ((d >> 30) & 1) | |
225 | #define dma_frcd_fault_reason(c) (c & 0xff) | |
226 | #define dma_frcd_source_id(c) (c & 0xffff) | |
5b6985ce FY |
227 | /* low 64 bit */ |
228 | #define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT)) | |
229 | ||
46924008 DW |
230 | /* PRS_REG */ |
231 | #define DMA_PRS_PPR ((u32)1) | |
232 | ||
5b6985ce FY |
233 | #define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \ |
234 | do { \ | |
235 | cycles_t start_time = get_cycles(); \ | |
236 | while (1) { \ | |
237 | sts = op(iommu->reg + offset); \ | |
238 | if (cond) \ | |
239 | break; \ | |
cf1337f0 | 240 | if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\ |
5b6985ce FY |
241 | panic("DMAR hardware is malfunctioning\n"); \ |
242 | cpu_relax(); \ | |
243 | } \ | |
244 | } while (0) | |
cf1337f0 | 245 | |
fe962e90 SS |
246 | #define QI_LENGTH 256 /* queue length */ |
247 | ||
248 | enum { | |
249 | QI_FREE, | |
250 | QI_IN_USE, | |
6ba6c3a4 YZ |
251 | QI_DONE, |
252 | QI_ABORT | |
fe962e90 SS |
253 | }; |
254 | ||
255 | #define QI_CC_TYPE 0x1 | |
256 | #define QI_IOTLB_TYPE 0x2 | |
257 | #define QI_DIOTLB_TYPE 0x3 | |
258 | #define QI_IEC_TYPE 0x4 | |
259 | #define QI_IWD_TYPE 0x5 | |
2f26e0a9 DW |
260 | #define QI_EIOTLB_TYPE 0x6 |
261 | #define QI_PC_TYPE 0x7 | |
262 | #define QI_DEIOTLB_TYPE 0x8 | |
a222a7f0 DW |
263 | #define QI_PGRP_RESP_TYPE 0x9 |
264 | #define QI_PSTRM_RESP_TYPE 0xa | |
fe962e90 SS |
265 | |
266 | #define QI_IEC_SELECTIVE (((u64)1) << 4) | |
267 | #define QI_IEC_IIDEX(idx) (((u64)(idx & 0xffff) << 32)) | |
268 | #define QI_IEC_IM(m) (((u64)(m & 0x1f) << 27)) | |
269 | ||
270 | #define QI_IWD_STATUS_DATA(d) (((u64)d) << 32) | |
271 | #define QI_IWD_STATUS_WRITE (((u64)1) << 5) | |
272 | ||
3481f210 YS |
273 | #define QI_IOTLB_DID(did) (((u64)did) << 16) |
274 | #define QI_IOTLB_DR(dr) (((u64)dr) << 7) | |
275 | #define QI_IOTLB_DW(dw) (((u64)dw) << 6) | |
276 | #define QI_IOTLB_GRAN(gran) (((u64)gran) >> (DMA_TLB_FLUSH_GRANU_OFFSET-4)) | |
5b6985ce | 277 | #define QI_IOTLB_ADDR(addr) (((u64)addr) & VTD_PAGE_MASK) |
3481f210 YS |
278 | #define QI_IOTLB_IH(ih) (((u64)ih) << 6) |
279 | #define QI_IOTLB_AM(am) (((u8)am)) | |
280 | ||
281 | #define QI_CC_FM(fm) (((u64)fm) << 48) | |
282 | #define QI_CC_SID(sid) (((u64)sid) << 32) | |
283 | #define QI_CC_DID(did) (((u64)did) << 16) | |
284 | #define QI_CC_GRAN(gran) (((u64)gran) >> (DMA_CCMD_INVL_GRANU_OFFSET-4)) | |
285 | ||
6ba6c3a4 YZ |
286 | #define QI_DEV_IOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32) |
287 | #define QI_DEV_IOTLB_QDEP(qdep) (((qdep) & 0x1f) << 16) | |
288 | #define QI_DEV_IOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK) | |
0f725561 | 289 | #define QI_DEV_IOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) |
6ba6c3a4 YZ |
290 | #define QI_DEV_IOTLB_SIZE 1 |
291 | #define QI_DEV_IOTLB_MAX_INVS 32 | |
292 | ||
2f26e0a9 DW |
293 | #define QI_PC_PASID(pasid) (((u64)pasid) << 32) |
294 | #define QI_PC_DID(did) (((u64)did) << 16) | |
295 | #define QI_PC_GRAN(gran) (((u64)gran) << 4) | |
296 | ||
297 | #define QI_PC_ALL_PASIDS (QI_PC_TYPE | QI_PC_GRAN(0)) | |
298 | #define QI_PC_PASID_SEL (QI_PC_TYPE | QI_PC_GRAN(1)) | |
299 | ||
300 | #define QI_EIOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK) | |
301 | #define QI_EIOTLB_GL(gl) (((u64)gl) << 7) | |
302 | #define QI_EIOTLB_IH(ih) (((u64)ih) << 6) | |
303 | #define QI_EIOTLB_AM(am) (((u64)am)) | |
304 | #define QI_EIOTLB_PASID(pasid) (((u64)pasid) << 32) | |
305 | #define QI_EIOTLB_DID(did) (((u64)did) << 16) | |
306 | #define QI_EIOTLB_GRAN(gran) (((u64)gran) << 4) | |
307 | ||
308 | #define QI_DEV_EIOTLB_ADDR(a) ((u64)(a) & VTD_PAGE_MASK) | |
309 | #define QI_DEV_EIOTLB_SIZE (((u64)1) << 11) | |
310 | #define QI_DEV_EIOTLB_GLOB(g) ((u64)g) | |
311 | #define QI_DEV_EIOTLB_PASID(p) (((u64)p) << 32) | |
aaa59306 CT |
312 | #define QI_DEV_EIOTLB_SID(sid) ((u64)((sid) & 0xffff) << 16) |
313 | #define QI_DEV_EIOTLB_QDEP(qd) ((u64)((qd) & 0x1f) << 4) | |
0f725561 | 314 | #define QI_DEV_EIOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) |
2f26e0a9 DW |
315 | #define QI_DEV_EIOTLB_MAX_INVS 32 |
316 | ||
a222a7f0 DW |
317 | #define QI_PGRP_IDX(idx) (((u64)(idx)) << 55) |
318 | #define QI_PGRP_PRIV(priv) (((u64)(priv)) << 32) | |
319 | #define QI_PGRP_RESP_CODE(res) ((u64)(res)) | |
320 | #define QI_PGRP_PASID(pasid) (((u64)(pasid)) << 32) | |
321 | #define QI_PGRP_DID(did) (((u64)(did)) << 16) | |
322 | #define QI_PGRP_PASID_P(p) (((u64)(p)) << 4) | |
323 | ||
324 | #define QI_PSTRM_ADDR(addr) (((u64)(addr)) & VTD_PAGE_MASK) | |
325 | #define QI_PSTRM_DEVFN(devfn) (((u64)(devfn)) << 4) | |
326 | #define QI_PSTRM_RESP_CODE(res) ((u64)(res)) | |
327 | #define QI_PSTRM_IDX(idx) (((u64)(idx)) << 55) | |
328 | #define QI_PSTRM_PRIV(priv) (((u64)(priv)) << 32) | |
329 | #define QI_PSTRM_BUS(bus) (((u64)(bus)) << 24) | |
330 | #define QI_PSTRM_PASID(pasid) (((u64)(pasid)) << 4) | |
331 | ||
332 | #define QI_RESP_SUCCESS 0x0 | |
333 | #define QI_RESP_INVALID 0x1 | |
334 | #define QI_RESP_FAILURE 0xf | |
335 | ||
2f26e0a9 DW |
336 | #define QI_GRAN_ALL_ALL 0 |
337 | #define QI_GRAN_NONG_ALL 1 | |
338 | #define QI_GRAN_NONG_PASID 2 | |
339 | #define QI_GRAN_PSI_PASID 3 | |
340 | ||
fe962e90 SS |
341 | struct qi_desc { |
342 | u64 low, high; | |
343 | }; | |
344 | ||
345 | struct q_inval { | |
3b8f4048 | 346 | raw_spinlock_t q_lock; |
fe962e90 SS |
347 | struct qi_desc *desc; /* invalidation queue */ |
348 | int *desc_status; /* desc status */ | |
349 | int free_head; /* first free entry */ | |
350 | int free_tail; /* last free entry */ | |
351 | int free_cnt; | |
352 | }; | |
353 | ||
d3f13810 | 354 | #ifdef CONFIG_IRQ_REMAP |
2ae21010 SS |
355 | /* 1MB - maximum possible interrupt remapping table size */ |
356 | #define INTR_REMAP_PAGE_ORDER 8 | |
357 | #define INTR_REMAP_TABLE_REG_SIZE 0xf | |
af3b358e | 358 | #define INTR_REMAP_TABLE_REG_SIZE_MASK 0xf |
2ae21010 | 359 | |
b6fcb33a SS |
360 | #define INTR_REMAP_TABLE_ENTRIES 65536 |
361 | ||
b106ee63 JL |
362 | struct irq_domain; |
363 | ||
2ae21010 SS |
364 | struct ir_table { |
365 | struct irte *base; | |
360eb3c5 | 366 | unsigned long *bitmap; |
2ae21010 SS |
367 | }; |
368 | #endif | |
369 | ||
a77b67d4 | 370 | struct iommu_flush { |
4c25a2c1 DW |
371 | void (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid, |
372 | u8 fm, u64 type); | |
1f0ef2aa DW |
373 | void (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr, |
374 | unsigned int size_order, u64 type); | |
a77b67d4 YS |
375 | }; |
376 | ||
f59c7b69 FY |
377 | enum { |
378 | SR_DMAR_FECTL_REG, | |
379 | SR_DMAR_FEDATA_REG, | |
380 | SR_DMAR_FEADDR_REG, | |
381 | SR_DMAR_FEUADDR_REG, | |
382 | MAX_SR_DMAR_REGS | |
383 | }; | |
384 | ||
4158c2ec JR |
385 | #define VTD_FLAG_TRANS_PRE_ENABLED (1 << 0) |
386 | #define VTD_FLAG_IRQ_REMAP_PRE_ENABLED (1 << 1) | |
387 | ||
8a94ade4 DW |
388 | struct pasid_entry; |
389 | struct pasid_state_entry; | |
a222a7f0 | 390 | struct page_req_dsc; |
8a94ade4 | 391 | |
26b86092 SM |
392 | /* |
393 | * 0: Present | |
394 | * 1-11: Reserved | |
395 | * 12-63: Context Ptr (12 - (haw-1)) | |
396 | * 64-127: Reserved | |
397 | */ | |
398 | struct root_entry { | |
399 | u64 lo; | |
400 | u64 hi; | |
401 | }; | |
402 | ||
403 | /* | |
404 | * low 64 bits: | |
405 | * 0: present | |
406 | * 1: fault processing disable | |
407 | * 2-3: translation type | |
408 | * 12-63: address space root | |
409 | * high 64 bits: | |
410 | * 0-2: address width | |
411 | * 3-6: aval | |
412 | * 8-23: domain id | |
413 | */ | |
414 | struct context_entry { | |
415 | u64 lo; | |
416 | u64 hi; | |
417 | }; | |
418 | ||
9ddbfb42 LB |
419 | struct dmar_domain { |
420 | int nid; /* node id */ | |
421 | ||
422 | unsigned iommu_refcnt[DMAR_UNITS_SUPPORTED]; | |
423 | /* Refcount of devices per iommu */ | |
424 | ||
425 | ||
426 | u16 iommu_did[DMAR_UNITS_SUPPORTED]; | |
427 | /* Domain ids per IOMMU. Use u16 since | |
428 | * domain ids are 16 bit wide according | |
429 | * to VT-d spec, section 9.3 */ | |
430 | ||
431 | bool has_iotlb_device; | |
432 | struct list_head devices; /* all devices' list */ | |
433 | struct iova_domain iovad; /* iova's that belong to this domain */ | |
434 | ||
435 | struct dma_pte *pgd; /* virtual address */ | |
436 | int gaw; /* max guest address width */ | |
437 | ||
438 | /* adjusted guest address width, 0 is level 2 30-bit */ | |
439 | int agaw; | |
440 | ||
441 | int flags; /* flags to find out type of domain */ | |
442 | ||
443 | int iommu_coherency;/* indicate coherency of iommu access */ | |
444 | int iommu_snooping; /* indicate snooping control feature*/ | |
445 | int iommu_count; /* reference count of iommu */ | |
446 | int iommu_superpage;/* Level of superpages supported: | |
447 | 0 == 4KiB (no superpages), 1 == 2MiB, | |
448 | 2 == 1GiB, 3 == 512GiB, 4 == 1TiB */ | |
449 | u64 max_addr; /* maximum mapped address */ | |
450 | ||
451 | struct iommu_domain domain; /* generic domain data structure for | |
452 | iommu core */ | |
453 | }; | |
454 | ||
ba395927 KA |
455 | struct intel_iommu { |
456 | void __iomem *reg; /* Pointer to hardware regs, virtual addr */ | |
6f5cf521 DD |
457 | u64 reg_phys; /* physical address of hw register set */ |
458 | u64 reg_size; /* size of hw register set */ | |
ba395927 KA |
459 | u64 cap; |
460 | u64 ecap; | |
ba395927 | 461 | u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */ |
1f5b3c3f | 462 | raw_spinlock_t register_lock; /* protect register handling */ |
c42d9f32 | 463 | int seq_id; /* sequence id of the iommu */ |
1b573683 | 464 | int agaw; /* agaw of this iommu */ |
4ed0d3e6 | 465 | int msagaw; /* max sagaw of this iommu */ |
1208225c | 466 | unsigned int irq, pr_irq; |
67ccac41 | 467 | u16 segment; /* PCI segment# */ |
9d783ba0 | 468 | unsigned char name[13]; /* Device Name */ |
e61d98d8 | 469 | |
d3f13810 | 470 | #ifdef CONFIG_INTEL_IOMMU |
e61d98d8 | 471 | unsigned long *domain_ids; /* bitmap of domains */ |
8bf47816 | 472 | struct dmar_domain ***domains; /* ptr to domains */ |
e61d98d8 | 473 | spinlock_t lock; /* protect context, domain ids */ |
ba395927 KA |
474 | struct root_entry *root_entry; /* virtual address */ |
475 | ||
a77b67d4 | 476 | struct iommu_flush flush; |
8a94ade4 DW |
477 | #endif |
478 | #ifdef CONFIG_INTEL_IOMMU_SVM | |
479 | /* These are large and need to be contiguous, so we allocate just | |
480 | * one for now. We'll maybe want to rethink that if we truly give | |
481 | * devices away to userspace processes (e.g. for DPDK) and don't | |
482 | * want to trust that userspace will use *only* the PASID it was | |
483 | * told to. But while it's all driver-arbitrated, we're fine. */ | |
8a94ade4 | 484 | struct pasid_state_entry *pasid_state_table; |
a222a7f0 DW |
485 | struct page_req_dsc *prq; |
486 | unsigned char prq_name[16]; /* Name for PRQ interrupt */ | |
91017044 | 487 | u32 pasid_max; |
e61d98d8 | 488 | #endif |
fe962e90 | 489 | struct q_inval *qi; /* Queued invalidation info */ |
f59c7b69 FY |
490 | u32 *iommu_state; /* Store iommu states between suspend and resume.*/ |
491 | ||
d3f13810 | 492 | #ifdef CONFIG_IRQ_REMAP |
2ae21010 | 493 | struct ir_table *ir_table; /* Interrupt remapping info */ |
b106ee63 JL |
494 | struct irq_domain *ir_domain; |
495 | struct irq_domain *ir_msi_domain; | |
2ae21010 | 496 | #endif |
b0119e87 | 497 | struct iommu_device iommu; /* IOMMU core code handle */ |
ee34b32d | 498 | int node; |
4158c2ec | 499 | u32 flags; /* Software defined flags */ |
ba395927 KA |
500 | }; |
501 | ||
9ddbfb42 LB |
502 | /* PCI domain-device relationship */ |
503 | struct device_domain_info { | |
504 | struct list_head link; /* link to domain siblings */ | |
505 | struct list_head global; /* link to global list */ | |
cc580e41 | 506 | struct list_head table; /* link to pasid table */ |
9ddbfb42 LB |
507 | u8 bus; /* PCI bus number */ |
508 | u8 devfn; /* PCI devfn number */ | |
509 | u16 pfsid; /* SRIOV physical function source ID */ | |
510 | u8 pasid_supported:3; | |
511 | u8 pasid_enabled:1; | |
512 | u8 pri_supported:1; | |
513 | u8 pri_enabled:1; | |
514 | u8 ats_supported:1; | |
515 | u8 ats_enabled:1; | |
516 | u8 ats_qdep; | |
517 | struct device *dev; /* it's NULL for PCIe-to-PCI bridge */ | |
518 | struct intel_iommu *iommu; /* IOMMU used by this device */ | |
519 | struct dmar_domain *domain; /* pointer to domain */ | |
cc580e41 | 520 | struct pasid_table *pasid_table; /* pasid table */ |
9ddbfb42 LB |
521 | }; |
522 | ||
fe962e90 SS |
523 | static inline void __iommu_flush_cache( |
524 | struct intel_iommu *iommu, void *addr, int size) | |
525 | { | |
526 | if (!ecap_coherent(iommu->ecap)) | |
527 | clflush_cache_range(addr, size); | |
528 | } | |
529 | ||
e61d98d8 | 530 | extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev); |
aa5d2b51 | 531 | extern int dmar_find_matched_atsr_unit(struct pci_dev *dev); |
e61d98d8 | 532 | |
2ae21010 | 533 | extern int dmar_enable_qi(struct intel_iommu *iommu); |
eba67e5d | 534 | extern void dmar_disable_qi(struct intel_iommu *iommu); |
f59c7b69 | 535 | extern int dmar_reenable_qi(struct intel_iommu *iommu); |
2ae21010 | 536 | extern void qi_global_iec(struct intel_iommu *iommu); |
e820482c | 537 | |
4c25a2c1 DW |
538 | extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid, |
539 | u8 fm, u64 type); | |
1f0ef2aa DW |
540 | extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr, |
541 | unsigned int size_order, u64 type); | |
1c48db44 JP |
542 | extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid, |
543 | u16 qdep, u64 addr, unsigned mask); | |
704126ad | 544 | extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu); |
38717946 | 545 | |
074835f0 YS |
546 | extern int dmar_ir_support(void); |
547 | ||
9ddbfb42 LB |
548 | struct dmar_domain *get_valid_domain_for_dev(struct device *dev); |
549 | void *alloc_pgtable_page(int node); | |
550 | void free_pgtable_page(void *vaddr); | |
551 | struct intel_iommu *domain_get_iommu(struct dmar_domain *domain); | |
85319dcc LB |
552 | int for_each_device_domain(int (*fn)(struct device_domain_info *info, |
553 | void *data), void *data); | |
9ddbfb42 | 554 | |
2f26e0a9 | 555 | #ifdef CONFIG_INTEL_IOMMU_SVM |
d9737953 LB |
556 | int intel_svm_init(struct intel_iommu *iommu); |
557 | int intel_svm_exit(struct intel_iommu *iommu); | |
a222a7f0 DW |
558 | extern int intel_svm_enable_prq(struct intel_iommu *iommu); |
559 | extern int intel_svm_finish_prq(struct intel_iommu *iommu); | |
8a94ade4 | 560 | |
0204a496 DW |
561 | struct svm_dev_ops; |
562 | ||
2f26e0a9 DW |
563 | struct intel_svm_dev { |
564 | struct list_head list; | |
565 | struct rcu_head rcu; | |
566 | struct device *dev; | |
0204a496 | 567 | struct svm_dev_ops *ops; |
2f26e0a9 DW |
568 | int users; |
569 | u16 did; | |
570 | u16 dev_iotlb:1; | |
571 | u16 sid, qdep; | |
572 | }; | |
573 | ||
574 | struct intel_svm { | |
575 | struct mmu_notifier notifier; | |
576 | struct mm_struct *mm; | |
577 | struct intel_iommu *iommu; | |
569e4f77 | 578 | int flags; |
2f26e0a9 DW |
579 | int pasid; |
580 | struct list_head devs; | |
51261aac | 581 | struct list_head list; |
2f26e0a9 DW |
582 | }; |
583 | ||
584 | extern int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct intel_svm_dev *sdev); | |
585 | extern struct intel_iommu *intel_svm_device_to_iommu(struct device *dev); | |
586 | #endif | |
587 | ||
a5459cfe | 588 | extern const struct attribute_group *intel_iommu_groups[]; |
26b86092 SM |
589 | bool context_present(struct context_entry *context); |
590 | struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus, | |
591 | u8 devfn, int alloc); | |
a5459cfe | 592 | |
ba395927 | 593 | #endif |