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Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -07001/*
2 * Copyright (c) 2006, Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
15 * Place - Suite 330, Boston, MA 02111-1307 USA.
16 *
mark gross98bcef52008-02-23 15:23:35 -080017 * Copyright (C) 2006-2008 Intel Corporation
18 * Author: Ashok Raj <ashok.raj@intel.com>
19 * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -070020 */
21
22#ifndef _INTEL_IOMMU_H_
23#define _INTEL_IOMMU_H_
24
25#include <linux/types.h>
Kay, Allen M38717942008-09-09 18:37:29 +030026#include <linux/iova.h>
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -070027#include <linux/io.h>
Kay, Allen M38717942008-09-09 18:37:29 +030028#include <linux/dma_remapping.h>
Suresh Siddhafe962e92008-07-10 11:16:42 -070029#include <asm/cacheflush.h>
Fenghua Yu5b6985c2008-10-16 18:02:32 -070030#include <asm/iommu.h>
David Millerf6611972008-02-06 01:36:23 -080031
32/*
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -070033 * Intel IOMMU register specification per version 1.0 public spec.
34 */
35
36#define DMAR_VER_REG 0x0 /* Arch version supported by this IOMMU */
37#define DMAR_CAP_REG 0x8 /* Hardware supported capabilities */
38#define DMAR_ECAP_REG 0x10 /* Extended capabilities supported */
39#define DMAR_GCMD_REG 0x18 /* Global command register */
40#define DMAR_GSTS_REG 0x1c /* Global status register */
41#define DMAR_RTADDR_REG 0x20 /* Root entry table */
42#define DMAR_CCMD_REG 0x28 /* Context command reg */
43#define DMAR_FSTS_REG 0x34 /* Fault Status register */
44#define DMAR_FECTL_REG 0x38 /* Fault control register */
45#define DMAR_FEDATA_REG 0x3c /* Fault event interrupt data register */
46#define DMAR_FEADDR_REG 0x40 /* Fault event interrupt addr register */
47#define DMAR_FEUADDR_REG 0x44 /* Upper address register */
48#define DMAR_AFLOG_REG 0x58 /* Advanced Fault control */
49#define DMAR_PMEN_REG 0x64 /* Enable Protected Memory Region */
50#define DMAR_PLMBASE_REG 0x68 /* PMRR Low addr */
51#define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */
52#define DMAR_PHMBASE_REG 0x70 /* pmrr high base addr */
53#define DMAR_PHMLIMIT_REG 0x78 /* pmrr high limit */
Suresh Siddhafe962e92008-07-10 11:16:42 -070054#define DMAR_IQH_REG 0x80 /* Invalidation queue head register */
55#define DMAR_IQT_REG 0x88 /* Invalidation queue tail register */
Yu Zhao6ba6c3a2009-05-18 13:51:35 +080056#define DMAR_IQ_SHIFT 4 /* Invalidation queue head/tail shift */
Suresh Siddhafe962e92008-07-10 11:16:42 -070057#define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */
Li, Zhen-Hua82aeef02013-09-13 14:27:32 +080058#define DMAR_ICS_REG 0x9c /* Invalidation complete status register */
Suresh Siddha2ae21012008-07-10 11:16:43 -070059#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -070060
61#define OFFSET_STRIDE (9)
62/*
63#define dmar_readl(dmar, reg) readl(dmar + reg)
64#define dmar_readq(dmar, reg) ({ \
65 u32 lo, hi; \
66 lo = readl(dmar + reg); \
67 hi = readl(dmar + reg + 4); \
68 (((u64) hi) << 32) + lo; })
69*/
Al Viro4fe05bb2007-10-29 04:51:16 +000070static inline u64 dmar_readq(void __iomem *addr)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -070071{
72 u32 lo, hi;
73 lo = readl(addr);
74 hi = readl(addr + 4);
75 return (((u64) hi) << 32) + lo;
76}
77
78static inline void dmar_writeq(void __iomem *addr, u64 val)
79{
80 writel((u32)val, addr);
81 writel((u32)(val >> 32), addr + 4);
82}
83
84#define DMAR_VER_MAJOR(v) (((v) & 0xf0) >> 4)
85#define DMAR_VER_MINOR(v) ((v) & 0x0f)
86
87/*
88 * Decoding Capability Register
89 */
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
David Woodhouse4423f5e2015-03-25 15:43:39 +0000118#define ecap_pss(e) ((e >> 35) & 0x1f)
119#define ecap_eafs(e) ((e >> 34) & 0x1)
120#define ecap_nwfs(e) ((e >> 33) & 0x1)
121#define ecap_srs(e) ((e >> 31) & 0x1)
122#define ecap_ers(e) ((e >> 30) & 0x1)
123#define ecap_prs(e) ((e >> 29) & 0x1)
124#define ecap_pasid(e) ((e >> 28) & 0x1)
125#define ecap_dis(e) ((e >> 27) & 0x1)
126#define ecap_nest(e) ((e >> 26) & 0x1)
127#define ecap_mts(e) ((e >> 25) & 0x1)
128#define ecap_ecs(e) ((e >> 24) & 0x1)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700129#define ecap_iotlb_offset(e) ((((e) >> 8) & 0x3ff) * 16)
David Woodhouse44caf2f2015-02-13 14:25:24 +0000130#define ecap_max_iotlb_offset(e) (ecap_iotlb_offset(e) + 16)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700131#define ecap_coherent(e) ((e) & 0x1)
Suresh Siddhafe962e92008-07-10 11:16:42 -0700132#define ecap_qis(e) ((e) & 0x2)
Fenghua Yu4ed0d3e2009-04-24 17:30:20 -0700133#define ecap_pass_through(e) ((e >> 6) & 0x1)
Suresh Siddhaad3ad3f2008-07-10 11:16:40 -0700134#define ecap_eim_support(e) ((e >> 4) & 0x1)
135#define ecap_ir_support(e) ((e >> 3) & 0x1)
Yu Zhao93a23a72009-05-18 13:51:37 +0800136#define ecap_dev_iotlb_support(e) (((e) >> 2) & 0x1)
Suresh Siddhab6fcb332008-07-10 11:16:44 -0700137#define ecap_max_handle_mask(e) ((e >> 20) & 0xf)
Sheng Yang58c610b2009-03-18 15:33:05 +0800138#define ecap_sc_support(e) ((e >> 7) & 0x1) /* Snooping Control */
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700139
140/* IOTLB_REG */
Youquan Song3481f212008-10-16 16:31:55 -0700141#define DMA_TLB_FLUSH_GRANU_OFFSET 60
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700142#define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60)
143#define DMA_TLB_DSI_FLUSH (((u64)2) << 60)
144#define DMA_TLB_PSI_FLUSH (((u64)3) << 60)
145#define DMA_TLB_IIRG(type) ((type >> 60) & 7)
146#define DMA_TLB_IAIG(val) (((val) >> 57) & 7)
147#define DMA_TLB_READ_DRAIN (((u64)1) << 49)
148#define DMA_TLB_WRITE_DRAIN (((u64)1) << 48)
149#define DMA_TLB_DID(id) (((u64)((id) & 0xffff)) << 32)
150#define DMA_TLB_IVT (((u64)1) << 63)
151#define DMA_TLB_IH_NONLEAF (((u64)1) << 6)
152#define DMA_TLB_MAX_SIZE (0x3f)
153
Suresh Siddhafe962e92008-07-10 11:16:42 -0700154/* INVALID_DESC */
Youquan Song3481f212008-10-16 16:31:55 -0700155#define DMA_CCMD_INVL_GRANU_OFFSET 61
Suresh Siddhafe962e92008-07-10 11:16:42 -0700156#define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3)
157#define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 3)
158#define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 3)
159#define DMA_ID_TLB_READ_DRAIN (((u64)1) << 7)
160#define DMA_ID_TLB_WRITE_DRAIN (((u64)1) << 6)
161#define DMA_ID_TLB_DID(id) (((u64)((id & 0xffff) << 16)))
162#define DMA_ID_TLB_IH_NONLEAF (((u64)1) << 6)
163#define DMA_ID_TLB_ADDR(addr) (addr)
164#define DMA_ID_TLB_ADDR_MASK(mask) (mask)
165
mark grossf8bab732008-02-08 04:18:38 -0800166/* PMEN_REG */
167#define DMA_PMEN_EPM (((u32)1)<<31)
168#define DMA_PMEN_PRS (((u32)1)<<0)
169
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700170/* GCMD_REG */
171#define DMA_GCMD_TE (((u32)1) << 31)
172#define DMA_GCMD_SRTP (((u32)1) << 30)
173#define DMA_GCMD_SFL (((u32)1) << 29)
174#define DMA_GCMD_EAFL (((u32)1) << 28)
175#define DMA_GCMD_WBF (((u32)1) << 27)
Suresh Siddha2ae21012008-07-10 11:16:43 -0700176#define DMA_GCMD_QIE (((u32)1) << 26)
177#define DMA_GCMD_SIRTP (((u32)1) << 24)
178#define DMA_GCMD_IRE (((u32) 1) << 25)
Han, Weidong161fde02009-04-03 17:15:47 +0800179#define DMA_GCMD_CFI (((u32) 1) << 23)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700180
181/* GSTS_REG */
182#define DMA_GSTS_TES (((u32)1) << 31)
183#define DMA_GSTS_RTPS (((u32)1) << 30)
184#define DMA_GSTS_FLS (((u32)1) << 29)
185#define DMA_GSTS_AFLS (((u32)1) << 28)
186#define DMA_GSTS_WBFS (((u32)1) << 27)
Suresh Siddha2ae21012008-07-10 11:16:43 -0700187#define DMA_GSTS_QIES (((u32)1) << 26)
188#define DMA_GSTS_IRTPS (((u32)1) << 24)
189#define DMA_GSTS_IRES (((u32)1) << 25)
Han, Weidong161fde02009-04-03 17:15:47 +0800190#define DMA_GSTS_CFIS (((u32)1) << 23)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700191
David Woodhouse4423f5e2015-03-25 15:43:39 +0000192/* DMA_RTADDR_REG */
193#define DMA_RTADDR_RTT (((u64)1) << 11)
194
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700195/* CCMD_REG */
196#define DMA_CCMD_ICC (((u64)1) << 63)
197#define DMA_CCMD_GLOBAL_INVL (((u64)1) << 61)
198#define DMA_CCMD_DOMAIN_INVL (((u64)2) << 61)
199#define DMA_CCMD_DEVICE_INVL (((u64)3) << 61)
200#define DMA_CCMD_FM(m) (((u64)((m) & 0x3)) << 32)
201#define DMA_CCMD_MASK_NOBIT 0
202#define DMA_CCMD_MASK_1BIT 1
203#define DMA_CCMD_MASK_2BIT 2
204#define DMA_CCMD_MASK_3BIT 3
205#define DMA_CCMD_SID(s) (((u64)((s) & 0xffff)) << 16)
206#define DMA_CCMD_DID(d) ((u64)((d) & 0xffff))
207
208/* FECTL_REG */
209#define DMA_FECTL_IM (((u32)1) << 31)
210
211/* FSTS_REG */
212#define DMA_FSTS_PPF ((u32)2)
213#define DMA_FSTS_PFO ((u32)1)
Yu Zhao704126a2009-01-04 16:28:52 +0800214#define DMA_FSTS_IQE (1 << 4)
Yu Zhao6ba6c3a2009-05-18 13:51:35 +0800215#define DMA_FSTS_ICE (1 << 5)
216#define DMA_FSTS_ITE (1 << 6)
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700217#define dma_fsts_fault_record_index(s) (((s) >> 8) & 0xff)
218
219/* FRCD_REG, 32 bits access */
220#define DMA_FRCD_F (((u32)1) << 31)
221#define dma_frcd_type(d) ((d >> 30) & 1)
222#define dma_frcd_fault_reason(c) (c & 0xff)
223#define dma_frcd_source_id(c) (c & 0xffff)
Fenghua Yu5b6985c2008-10-16 18:02:32 -0700224/* low 64 bit */
225#define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT))
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700226
Fenghua Yu5b6985c2008-10-16 18:02:32 -0700227#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
228do { \
229 cycles_t start_time = get_cycles(); \
230 while (1) { \
231 sts = op(iommu->reg + offset); \
232 if (cond) \
233 break; \
Suresh Siddhacf1337f2008-07-10 11:16:41 -0700234 if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
Fenghua Yu5b6985c2008-10-16 18:02:32 -0700235 panic("DMAR hardware is malfunctioning\n"); \
236 cpu_relax(); \
237 } \
238} while (0)
Suresh Siddhacf1337f2008-07-10 11:16:41 -0700239
Suresh Siddhafe962e92008-07-10 11:16:42 -0700240#define QI_LENGTH 256 /* queue length */
241
242enum {
243 QI_FREE,
244 QI_IN_USE,
Yu Zhao6ba6c3a2009-05-18 13:51:35 +0800245 QI_DONE,
246 QI_ABORT
Suresh Siddhafe962e92008-07-10 11:16:42 -0700247};
248
249#define QI_CC_TYPE 0x1
250#define QI_IOTLB_TYPE 0x2
251#define QI_DIOTLB_TYPE 0x3
252#define QI_IEC_TYPE 0x4
253#define QI_IWD_TYPE 0x5
254
255#define QI_IEC_SELECTIVE (((u64)1) << 4)
256#define QI_IEC_IIDEX(idx) (((u64)(idx & 0xffff) << 32))
257#define QI_IEC_IM(m) (((u64)(m & 0x1f) << 27))
258
259#define QI_IWD_STATUS_DATA(d) (((u64)d) << 32)
260#define QI_IWD_STATUS_WRITE (((u64)1) << 5)
261
Youquan Song3481f212008-10-16 16:31:55 -0700262#define QI_IOTLB_DID(did) (((u64)did) << 16)
263#define QI_IOTLB_DR(dr) (((u64)dr) << 7)
264#define QI_IOTLB_DW(dw) (((u64)dw) << 6)
265#define QI_IOTLB_GRAN(gran) (((u64)gran) >> (DMA_TLB_FLUSH_GRANU_OFFSET-4))
Fenghua Yu5b6985c2008-10-16 18:02:32 -0700266#define QI_IOTLB_ADDR(addr) (((u64)addr) & VTD_PAGE_MASK)
Youquan Song3481f212008-10-16 16:31:55 -0700267#define QI_IOTLB_IH(ih) (((u64)ih) << 6)
268#define QI_IOTLB_AM(am) (((u8)am))
269
270#define QI_CC_FM(fm) (((u64)fm) << 48)
271#define QI_CC_SID(sid) (((u64)sid) << 32)
272#define QI_CC_DID(did) (((u64)did) << 16)
273#define QI_CC_GRAN(gran) (((u64)gran) >> (DMA_CCMD_INVL_GRANU_OFFSET-4))
274
Yu Zhao6ba6c3a2009-05-18 13:51:35 +0800275#define QI_DEV_IOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32)
276#define QI_DEV_IOTLB_QDEP(qdep) (((qdep) & 0x1f) << 16)
277#define QI_DEV_IOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK)
278#define QI_DEV_IOTLB_SIZE 1
279#define QI_DEV_IOTLB_MAX_INVS 32
280
Suresh Siddhafe962e92008-07-10 11:16:42 -0700281struct qi_desc {
282 u64 low, high;
283};
284
285struct q_inval {
Thomas Gleixner3b8f4042011-07-19 17:02:07 +0200286 raw_spinlock_t q_lock;
Suresh Siddhafe962e92008-07-10 11:16:42 -0700287 struct qi_desc *desc; /* invalidation queue */
288 int *desc_status; /* desc status */
289 int free_head; /* first free entry */
290 int free_tail; /* last free entry */
291 int free_cnt;
292};
293
Suresh Siddhad3f13812011-08-23 17:05:25 -0700294#ifdef CONFIG_IRQ_REMAP
Suresh Siddha2ae21012008-07-10 11:16:43 -0700295/* 1MB - maximum possible interrupt remapping table size */
296#define INTR_REMAP_PAGE_ORDER 8
297#define INTR_REMAP_TABLE_REG_SIZE 0xf
298
Suresh Siddhab6fcb332008-07-10 11:16:44 -0700299#define INTR_REMAP_TABLE_ENTRIES 65536
300
Suresh Siddha2ae21012008-07-10 11:16:43 -0700301struct ir_table {
302 struct irte *base;
Jiang Liu360eb3c2014-01-06 14:18:08 +0800303 unsigned long *bitmap;
Suresh Siddha2ae21012008-07-10 11:16:43 -0700304};
305#endif
306
Youquan Songa77b67d2008-10-16 16:31:56 -0700307struct iommu_flush {
David Woodhouse4c25a2c2009-05-10 17:16:06 +0100308 void (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid,
309 u8 fm, u64 type);
David Woodhouse1f0ef2a2009-05-10 19:58:49 +0100310 void (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr,
311 unsigned int size_order, u64 type);
Youquan Songa77b67d2008-10-16 16:31:56 -0700312};
313
Fenghua Yuf59c7b62009-03-27 14:22:42 -0700314enum {
315 SR_DMAR_FECTL_REG,
316 SR_DMAR_FEDATA_REG,
317 SR_DMAR_FEADDR_REG,
318 SR_DMAR_FEUADDR_REG,
319 MAX_SR_DMAR_REGS
320};
321
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700322struct intel_iommu {
323 void __iomem *reg; /* Pointer to hardware regs, virtual addr */
Donald Dutile6f5cf522012-06-04 17:29:02 -0400324 u64 reg_phys; /* physical address of hw register set */
325 u64 reg_size; /* size of hw register set */
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700326 u64 cap;
327 u64 ecap;
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700328 u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */
Thomas Gleixner1f5b3c32011-07-19 16:19:51 +0200329 raw_spinlock_t register_lock; /* protect register handling */
Suresh Siddhac42d9f32008-07-10 11:16:36 -0700330 int seq_id; /* sequence id of the iommu */
Weidong Han1b573682008-12-08 15:34:06 +0800331 int agaw; /* agaw of this iommu */
Fenghua Yu4ed0d3e2009-04-24 17:30:20 -0700332 int msagaw; /* max sagaw of this iommu */
Suresh Siddha9d783ba2009-03-16 17:04:55 -0700333 unsigned int irq;
David Woodhouse67ccac42014-03-09 13:49:45 -0700334 u16 segment; /* PCI segment# */
Suresh Siddha9d783ba2009-03-16 17:04:55 -0700335 unsigned char name[13]; /* Device Name */
Suresh Siddhae61d98d2008-07-10 11:16:35 -0700336
Suresh Siddhad3f13812011-08-23 17:05:25 -0700337#ifdef CONFIG_INTEL_IOMMU
Suresh Siddhae61d98d2008-07-10 11:16:35 -0700338 unsigned long *domain_ids; /* bitmap of domains */
339 struct dmar_domain **domains; /* ptr to domains */
340 spinlock_t lock; /* protect context, domain ids */
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700341 struct root_entry *root_entry; /* virtual address */
342
Youquan Songa77b67d2008-10-16 16:31:56 -0700343 struct iommu_flush flush;
Suresh Siddhae61d98d2008-07-10 11:16:35 -0700344#endif
Suresh Siddhafe962e92008-07-10 11:16:42 -0700345 struct q_inval *qi; /* Queued invalidation info */
Fenghua Yuf59c7b62009-03-27 14:22:42 -0700346 u32 *iommu_state; /* Store iommu states between suspend and resume.*/
347
Suresh Siddhad3f13812011-08-23 17:05:25 -0700348#ifdef CONFIG_IRQ_REMAP
Suresh Siddha2ae21012008-07-10 11:16:43 -0700349 struct ir_table *ir_table; /* Interrupt remapping info */
350#endif
Alex Williamsona5459cf2014-06-12 16:12:31 -0600351 struct device *iommu_dev; /* IOMMU-sysfs device */
Suresh Siddhaee34b322009-10-02 11:01:21 -0700352 int node;
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700353};
354
Suresh Siddhafe962e92008-07-10 11:16:42 -0700355static inline void __iommu_flush_cache(
356 struct intel_iommu *iommu, void *addr, int size)
357{
358 if (!ecap_coherent(iommu->ecap))
359 clflush_cache_range(addr, size);
360}
361
Suresh Siddhae61d98d2008-07-10 11:16:35 -0700362extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);
Yu Zhaoaa5d2b52009-05-18 13:51:34 +0800363extern int dmar_find_matched_atsr_unit(struct pci_dev *dev);
Suresh Siddhae61d98d2008-07-10 11:16:35 -0700364
Suresh Siddha2ae21012008-07-10 11:16:43 -0700365extern int dmar_enable_qi(struct intel_iommu *iommu);
Suresh Siddhaeba67e52009-03-16 17:04:56 -0700366extern void dmar_disable_qi(struct intel_iommu *iommu);
Fenghua Yuf59c7b62009-03-27 14:22:42 -0700367extern int dmar_reenable_qi(struct intel_iommu *iommu);
Suresh Siddha2ae21012008-07-10 11:16:43 -0700368extern void qi_global_iec(struct intel_iommu *iommu);
Keshavamurthy, Anil Se8204822007-10-21 16:41:55 -0700369
David Woodhouse4c25a2c2009-05-10 17:16:06 +0100370extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
371 u8 fm, u64 type);
David Woodhouse1f0ef2a2009-05-10 19:58:49 +0100372extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
373 unsigned int size_order, u64 type);
Yu Zhao6ba6c3a2009-05-18 13:51:35 +0800374extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
375 u64 addr, unsigned mask);
Youquan Song3481f212008-10-16 16:31:55 -0700376
Yu Zhao704126a2009-01-04 16:28:52 +0800377extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
Kay, Allen M38717942008-09-09 18:37:29 +0300378
Youquan Song074835f2009-09-09 12:05:39 -0400379extern int dmar_ir_support(void);
380
Alex Williamsona5459cf2014-06-12 16:12:31 -0600381extern const struct attribute_group *intel_iommu_groups[];
382
Keshavamurthy, Anil Sba395922007-10-21 16:41:49 -0700383#endif