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authorKay, Allen M <allen.m.kay@intel.com>2008-09-09 11:37:29 -0400
committerAvi Kivity <avi@redhat.com>2008-10-15 08:24:08 -0400
commit387179464257921eb9aa3d15cc3ff194f6945a7c (patch)
treea7f06903688df8a1d3231faf1ab68bf80e032ea6 /drivers
parentaa3a816b6d0bd59e1a9c548cc7d2dd829f26534f (diff)
VT-d: Changes to support KVM
This patch extends the VT-d driver to support KVM [Ben: fixed memory pinning] [avi: move dma_remapping.h as well] Signed-off-by: Kay, Allen M <allen.m.kay@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com> Signed-off-by: Amit Shah <amit.shah@qumranet.com> Acked-by: Mark Gross <mgross@linux.intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/dma_remapping.h157
-rw-r--r--drivers/pci/dmar.c4
-rw-r--r--drivers/pci/intel-iommu.c116
-rw-r--r--drivers/pci/intel-iommu.h307
-rw-r--r--drivers/pci/intr_remapping.c2
-rw-r--r--drivers/pci/intr_remapping.h2
-rw-r--r--drivers/pci/iova.c2
-rw-r--r--drivers/pci/iova.h52
8 files changed, 117 insertions, 525 deletions
diff --git a/drivers/pci/dma_remapping.h b/drivers/pci/dma_remapping.h
deleted file mode 100644
index bff5c65f81dc..000000000000
--- a/drivers/pci/dma_remapping.h
+++ /dev/null
@@ -1,157 +0,0 @@
1#ifndef _DMA_REMAPPING_H
2#define _DMA_REMAPPING_H
3
4/*
5 * We need a fixed PAGE_SIZE of 4K irrespective of
6 * arch PAGE_SIZE for IOMMU page tables.
7 */
8#define PAGE_SHIFT_4K (12)
9#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K)
10#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K)
11#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
12
13#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K)
14#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
15#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
16
17
18/*
19 * 0: Present
20 * 1-11: Reserved
21 * 12-63: Context Ptr (12 - (haw-1))
22 * 64-127: Reserved
23 */
24struct root_entry {
25 u64 val;
26 u64 rsvd1;
27};
28#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
29static inline bool root_present(struct root_entry *root)
30{
31 return (root->val & 1);
32}
33static inline void set_root_present(struct root_entry *root)
34{
35 root->val |= 1;
36}
37static inline void set_root_value(struct root_entry *root, unsigned long value)
38{
39 root->val |= value & PAGE_MASK_4K;
40}
41
42struct context_entry;
43static inline struct context_entry *
44get_context_addr_from_root(struct root_entry *root)
45{
46 return (struct context_entry *)
47 (root_present(root)?phys_to_virt(
48 root->val & PAGE_MASK_4K):
49 NULL);
50}
51
52/*
53 * low 64 bits:
54 * 0: present
55 * 1: fault processing disable
56 * 2-3: translation type
57 * 12-63: address space root
58 * high 64 bits:
59 * 0-2: address width
60 * 3-6: aval
61 * 8-23: domain id
62 */
63struct context_entry {
64 u64 lo;
65 u64 hi;
66};
67#define context_present(c) ((c).lo & 1)
68#define context_fault_disable(c) (((c).lo >> 1) & 1)
69#define context_translation_type(c) (((c).lo >> 2) & 3)
70#define context_address_root(c) ((c).lo & PAGE_MASK_4K)
71#define context_address_width(c) ((c).hi & 7)
72#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
73
74#define context_set_present(c) do {(c).lo |= 1;} while (0)
75#define context_set_fault_enable(c) \
76 do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
77#define context_set_translation_type(c, val) \
78 do { \
79 (c).lo &= (((u64)-1) << 4) | 3; \
80 (c).lo |= ((val) & 3) << 2; \
81 } while (0)
82#define CONTEXT_TT_MULTI_LEVEL 0
83#define context_set_address_root(c, val) \
84 do {(c).lo |= (val) & PAGE_MASK_4K;} while (0)
85#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
86#define context_set_domain_id(c, val) \
87 do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
88#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
89
90/*
91 * 0: readable
92 * 1: writable
93 * 2-6: reserved
94 * 7: super page
95 * 8-11: available
96 * 12-63: Host physcial address
97 */
98struct dma_pte {
99 u64 val;
100};
101#define dma_clear_pte(p) do {(p).val = 0;} while (0)
102
103#define DMA_PTE_READ (1)
104#define DMA_PTE_WRITE (2)
105
106#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0)
107#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
108#define dma_set_pte_prot(p, prot) \
109 do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
110#define dma_pte_addr(p) ((p).val & PAGE_MASK_4K)
111#define dma_set_pte_addr(p, addr) do {\
112 (p).val |= ((addr) & PAGE_MASK_4K); } while (0)
113#define dma_pte_present(p) (((p).val & 3) != 0)
114
115struct intel_iommu;
116
117struct dmar_domain {
118 int id; /* domain id */
119 struct intel_iommu *iommu; /* back pointer to owning iommu */
120
121 struct list_head devices; /* all devices' list */
122 struct iova_domain iovad; /* iova's that belong to this domain */
123
124 struct dma_pte *pgd; /* virtual address */
125 spinlock_t mapping_lock; /* page table lock */
126 int gaw; /* max guest address width */
127
128 /* adjusted guest address width, 0 is level 2 30-bit */
129 int agaw;
130
131#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
132 int flags;
133};
134
135/* PCI domain-device relationship */
136struct device_domain_info {
137 struct list_head link; /* link to domain siblings */
138 struct list_head global; /* link to global list */
139 u8 bus; /* PCI bus numer */
140 u8 devfn; /* PCI devfn number */
141 struct pci_dev *dev; /* it's NULL for PCIE-to-PCI bridge */
142 struct dmar_domain *domain; /* pointer to domain */
143};
144
145extern int init_dmars(void);
146extern void free_dmar_iommu(struct intel_iommu *iommu);
147
148extern int dmar_disabled;
149
150#ifndef CONFIG_DMAR_GFX_WA
151static inline void iommu_prepare_gfx_mapping(void)
152{
153 return;
154}
155#endif /* !CONFIG_DMAR_GFX_WA */
156
157#endif
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index bd2c01674f5e..e842e756308a 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -28,9 +28,9 @@
28 28
29#include <linux/pci.h> 29#include <linux/pci.h>
30#include <linux/dmar.h> 30#include <linux/dmar.h>
31#include <linux/iova.h>
32#include <linux/intel-iommu.h>
31#include <linux/timer.h> 33#include <linux/timer.h>
32#include "iova.h"
33#include "intel-iommu.h"
34 34
35#undef PREFIX 35#undef PREFIX
36#define PREFIX "DMAR:" 36#define PREFIX "DMAR:"
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 389fdd6f4a9f..fc5f2dbf5323 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -33,8 +33,8 @@
33#include <linux/dma-mapping.h> 33#include <linux/dma-mapping.h>
34#include <linux/mempool.h> 34#include <linux/mempool.h>
35#include <linux/timer.h> 35#include <linux/timer.h>
36#include "iova.h" 36#include <linux/iova.h>
37#include "intel-iommu.h" 37#include <linux/intel-iommu.h>
38#include <asm/proto.h> /* force_iommu in this header in x86-64*/ 38#include <asm/proto.h> /* force_iommu in this header in x86-64*/
39#include <asm/cacheflush.h> 39#include <asm/cacheflush.h>
40#include <asm/iommu.h> 40#include <asm/iommu.h>
@@ -156,7 +156,7 @@ static inline void *alloc_domain_mem(void)
156 return iommu_kmem_cache_alloc(iommu_domain_cache); 156 return iommu_kmem_cache_alloc(iommu_domain_cache);
157} 157}
158 158
159static inline void free_domain_mem(void *vaddr) 159static void free_domain_mem(void *vaddr)
160{ 160{
161 kmem_cache_free(iommu_domain_cache, vaddr); 161 kmem_cache_free(iommu_domain_cache, vaddr);
162} 162}
@@ -1341,7 +1341,7 @@ static void domain_remove_dev_info(struct dmar_domain *domain)
1341 * find_domain 1341 * find_domain
1342 * Note: we use struct pci_dev->dev.archdata.iommu stores the info 1342 * Note: we use struct pci_dev->dev.archdata.iommu stores the info
1343 */ 1343 */
1344struct dmar_domain * 1344static struct dmar_domain *
1345find_domain(struct pci_dev *pdev) 1345find_domain(struct pci_dev *pdev)
1346{ 1346{
1347 struct device_domain_info *info; 1347 struct device_domain_info *info;
@@ -2318,3 +2318,111 @@ int __init intel_iommu_init(void)
2318 return 0; 2318 return 0;
2319} 2319}
2320 2320
2321void intel_iommu_domain_exit(struct dmar_domain *domain)
2322{
2323 u64 end;
2324
2325 /* Domain 0 is reserved, so dont process it */
2326 if (!domain)
2327 return;
2328
2329 end = DOMAIN_MAX_ADDR(domain->gaw);
2330 end = end & (~PAGE_MASK_4K);
2331
2332 /* clear ptes */
2333 dma_pte_clear_range(domain, 0, end);
2334
2335 /* free page tables */
2336 dma_pte_free_pagetable(domain, 0, end);
2337
2338 iommu_free_domain(domain);
2339 free_domain_mem(domain);
2340}
2341EXPORT_SYMBOL_GPL(intel_iommu_domain_exit);
2342
2343struct dmar_domain *intel_iommu_domain_alloc(struct pci_dev *pdev)
2344{
2345 struct dmar_drhd_unit *drhd;
2346 struct dmar_domain *domain;
2347 struct intel_iommu *iommu;
2348
2349 drhd = dmar_find_matched_drhd_unit(pdev);
2350 if (!drhd) {
2351 printk(KERN_ERR "intel_iommu_domain_alloc: drhd == NULL\n");
2352 return NULL;
2353 }
2354
2355 iommu = drhd->iommu;
2356 if (!iommu) {
2357 printk(KERN_ERR
2358 "intel_iommu_domain_alloc: iommu == NULL\n");
2359 return NULL;
2360 }
2361 domain = iommu_alloc_domain(iommu);
2362 if (!domain) {
2363 printk(KERN_ERR
2364 "intel_iommu_domain_alloc: domain == NULL\n");
2365 return NULL;
2366 }
2367 if (domain_init(domain, DEFAULT_DOMAIN_ADDRESS_WIDTH)) {
2368 printk(KERN_ERR
2369 "intel_iommu_domain_alloc: domain_init() failed\n");
2370 intel_iommu_domain_exit(domain);
2371 return NULL;
2372 }
2373 return domain;
2374}
2375EXPORT_SYMBOL_GPL(intel_iommu_domain_alloc);
2376
2377int intel_iommu_context_mapping(
2378 struct dmar_domain *domain, struct pci_dev *pdev)
2379{
2380 int rc;
2381 rc = domain_context_mapping(domain, pdev);
2382 return rc;
2383}
2384EXPORT_SYMBOL_GPL(intel_iommu_context_mapping);
2385
2386int intel_iommu_page_mapping(
2387 struct dmar_domain *domain, dma_addr_t iova,
2388 u64 hpa, size_t size, int prot)
2389{
2390 int rc;
2391 rc = domain_page_mapping(domain, iova, hpa, size, prot);
2392 return rc;
2393}
2394EXPORT_SYMBOL_GPL(intel_iommu_page_mapping);
2395
2396void intel_iommu_detach_dev(struct dmar_domain *domain, u8 bus, u8 devfn)
2397{
2398 detach_domain_for_dev(domain, bus, devfn);
2399}
2400EXPORT_SYMBOL_GPL(intel_iommu_detach_dev);
2401
2402struct dmar_domain *
2403intel_iommu_find_domain(struct pci_dev *pdev)
2404{
2405 return find_domain(pdev);
2406}
2407EXPORT_SYMBOL_GPL(intel_iommu_find_domain);
2408
2409int intel_iommu_found(void)
2410{
2411 return g_num_of_iommus;
2412}
2413EXPORT_SYMBOL_GPL(intel_iommu_found);
2414
2415u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova)
2416{
2417 struct dma_pte *pte;
2418 u64 pfn;
2419
2420 pfn = 0;
2421 pte = addr_to_dma_pte(domain, iova);
2422
2423 if (pte)
2424 pfn = dma_pte_addr(*pte);
2425
2426 return pfn >> PAGE_SHIFT_4K;
2427}
2428EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn);
diff --git a/drivers/pci/intel-iommu.h b/drivers/pci/intel-iommu.h
deleted file mode 100644
index 2142c01e0143..000000000000
--- a/drivers/pci/intel-iommu.h
+++ /dev/null
@@ -1,307 +0,0 @@
1/*
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 *
17 * Copyright (C) 2006-2008 Intel Corporation
18 * Author: Ashok Raj <ashok.raj@intel.com>
19 * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
20 */
21
22#ifndef _INTEL_IOMMU_H_
23#define _INTEL_IOMMU_H_
24
25#include <linux/types.h>
26#include <linux/msi.h>
27#include <linux/sysdev.h>
28#include "iova.h"
29#include <linux/io.h>
30#include <asm/cacheflush.h>
31#include "dma_remapping.h"
32
33/*
34 * Intel IOMMU register specification per version 1.0 public spec.
35 */
36
37#define DMAR_VER_REG 0x0 /* Arch version supported by this IOMMU */
38#define DMAR_CAP_REG 0x8 /* Hardware supported capabilities */
39#define DMAR_ECAP_REG 0x10 /* Extended capabilities supported */
40#define DMAR_GCMD_REG 0x18 /* Global command register */
41#define DMAR_GSTS_REG 0x1c /* Global status register */
42#define DMAR_RTADDR_REG 0x20 /* Root entry table */
43#define DMAR_CCMD_REG 0x28 /* Context command reg */
44#define DMAR_FSTS_REG 0x34 /* Fault Status register */
45#define DMAR_FECTL_REG 0x38 /* Fault control register */
46#define DMAR_FEDATA_REG 0x3c /* Fault event interrupt data register */
47#define DMAR_FEADDR_REG 0x40 /* Fault event interrupt addr register */
48#define DMAR_FEUADDR_REG 0x44 /* Upper address register */
49#define DMAR_AFLOG_REG 0x58 /* Advanced Fault control */
50#define DMAR_PMEN_REG 0x64 /* Enable Protected Memory Region */
51#define DMAR_PLMBASE_REG 0x68 /* PMRR Low addr */
52#define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */
53#define DMAR_PHMBASE_REG 0x70 /* pmrr high base addr */
54#define DMAR_PHMLIMIT_REG 0x78 /* pmrr high limit */
55#define DMAR_IQH_REG 0x80 /* Invalidation queue head register */
56#define DMAR_IQT_REG 0x88 /* Invalidation queue tail register */
57#define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */
58#define DMAR_ICS_REG 0x98 /* Invalidation complete status register */
59#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */
60
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*/
70static inline u64 dmar_readq(void __iomem *addr)
71{
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
118#define ecap_niotlb_iunits(e) ((((e) >> 24) & 0xff) + 1)
119#define ecap_iotlb_offset(e) ((((e) >> 8) & 0x3ff) * 16)
120#define ecap_max_iotlb_offset(e) \
121 (ecap_iotlb_offset(e) + ecap_niotlb_iunits(e) * 16)
122#define ecap_coherent(e) ((e) & 0x1)
123#define ecap_qis(e) ((e) & 0x2)
124#define ecap_eim_support(e) ((e >> 4) & 0x1)
125#define ecap_ir_support(e) ((e >> 3) & 0x1)
126#define ecap_max_handle_mask(e) ((e >> 20) & 0xf)
127
128
129/* IOTLB_REG */
130#define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60)
131#define DMA_TLB_DSI_FLUSH (((u64)2) << 60)
132#define DMA_TLB_PSI_FLUSH (((u64)3) << 60)
133#define DMA_TLB_IIRG(type) ((type >> 60) & 7)
134#define DMA_TLB_IAIG(val) (((val) >> 57) & 7)
135#define DMA_TLB_READ_DRAIN (((u64)1) << 49)
136#define DMA_TLB_WRITE_DRAIN (((u64)1) << 48)
137#define DMA_TLB_DID(id) (((u64)((id) & 0xffff)) << 32)
138#define DMA_TLB_IVT (((u64)1) << 63)
139#define DMA_TLB_IH_NONLEAF (((u64)1) << 6)
140#define DMA_TLB_MAX_SIZE (0x3f)
141
142/* INVALID_DESC */
143#define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3)
144#define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 3)
145#define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 3)
146#define DMA_ID_TLB_READ_DRAIN (((u64)1) << 7)
147#define DMA_ID_TLB_WRITE_DRAIN (((u64)1) << 6)
148#define DMA_ID_TLB_DID(id) (((u64)((id & 0xffff) << 16)))
149#define DMA_ID_TLB_IH_NONLEAF (((u64)1) << 6)
150#define DMA_ID_TLB_ADDR(addr) (addr)
151#define DMA_ID_TLB_ADDR_MASK(mask) (mask)
152
153/* PMEN_REG */
154#define DMA_PMEN_EPM (((u32)1)<<31)
155#define DMA_PMEN_PRS (((u32)1)<<0)
156
157/* GCMD_REG */
158#define DMA_GCMD_TE (((u32)1) << 31)
159#define DMA_GCMD_SRTP (((u32)1) << 30)
160#define DMA_GCMD_SFL (((u32)1) << 29)
161#define DMA_GCMD_EAFL (((u32)1) << 28)
162#define DMA_GCMD_WBF (((u32)1) << 27)
163#define DMA_GCMD_QIE (((u32)1) << 26)
164#define DMA_GCMD_SIRTP (((u32)1) << 24)
165#define DMA_GCMD_IRE (((u32) 1) << 25)
166
167/* GSTS_REG */
168#define DMA_GSTS_TES (((u32)1) << 31)
169#define DMA_GSTS_RTPS (((u32)1) << 30)
170#define DMA_GSTS_FLS (((u32)1) << 29)
171#define DMA_GSTS_AFLS (((u32)1) << 28)
172#define DMA_GSTS_WBFS (((u32)1) << 27)
173#define DMA_GSTS_QIES (((u32)1) << 26)
174#define DMA_GSTS_IRTPS (((u32)1) << 24)
175#define DMA_GSTS_IRES (((u32)1) << 25)
176
177/* CCMD_REG */
178#define DMA_CCMD_ICC (((u64)1) << 63)
179#define DMA_CCMD_GLOBAL_INVL (((u64)1) << 61)
180#define DMA_CCMD_DOMAIN_INVL (((u64)2) << 61)
181#define DMA_CCMD_DEVICE_INVL (((u64)3) << 61)
182#define DMA_CCMD_FM(m) (((u64)((m) & 0x3)) << 32)
183#define DMA_CCMD_MASK_NOBIT 0
184#define DMA_CCMD_MASK_1BIT 1
185#define DMA_CCMD_MASK_2BIT 2
186#define DMA_CCMD_MASK_3BIT 3
187#define DMA_CCMD_SID(s) (((u64)((s) & 0xffff)) << 16)
188#define DMA_CCMD_DID(d) ((u64)((d) & 0xffff))
189
190/* FECTL_REG */
191#define DMA_FECTL_IM (((u32)1) << 31)
192
193/* FSTS_REG */
194#define DMA_FSTS_PPF ((u32)2)
195#define DMA_FSTS_PFO ((u32)1)
196#define dma_fsts_fault_record_index(s) (((s) >> 8) & 0xff)
197
198/* FRCD_REG, 32 bits access */
199#define DMA_FRCD_F (((u32)1) << 31)
200#define dma_frcd_type(d) ((d >> 30) & 1)
201#define dma_frcd_fault_reason(c) (c & 0xff)
202#define dma_frcd_source_id(c) (c & 0xffff)
203#define dma_frcd_page_addr(d) (d & (((u64)-1) << 12)) /* low 64 bit */
204
205#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */
206
207#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
208{\
209 cycles_t start_time = get_cycles();\
210 while (1) {\
211 sts = op (iommu->reg + offset);\
212 if (cond)\
213 break;\
214 if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
215 panic("DMAR hardware is malfunctioning\n");\
216 cpu_relax();\
217 }\
218}
219
220#define QI_LENGTH 256 /* queue length */
221
222enum {
223 QI_FREE,
224 QI_IN_USE,
225 QI_DONE
226};
227
228#define QI_CC_TYPE 0x1
229#define QI_IOTLB_TYPE 0x2
230#define QI_DIOTLB_TYPE 0x3
231#define QI_IEC_TYPE 0x4
232#define QI_IWD_TYPE 0x5
233
234#define QI_IEC_SELECTIVE (((u64)1) << 4)
235#define QI_IEC_IIDEX(idx) (((u64)(idx & 0xffff) << 32))
236#define QI_IEC_IM(m) (((u64)(m & 0x1f) << 27))
237
238#define QI_IWD_STATUS_DATA(d) (((u64)d) << 32)
239#define QI_IWD_STATUS_WRITE (((u64)1) << 5)
240
241struct qi_desc {
242 u64 low, high;
243};
244
245struct q_inval {
246 spinlock_t q_lock;
247 struct qi_desc *desc; /* invalidation queue */
248 int *desc_status; /* desc status */
249 int free_head; /* first free entry */
250 int free_tail; /* last free entry */
251 int free_cnt;
252};
253
254#ifdef CONFIG_INTR_REMAP
255/* 1MB - maximum possible interrupt remapping table size */
256#define INTR_REMAP_PAGE_ORDER 8
257#define INTR_REMAP_TABLE_REG_SIZE 0xf
258
259#define INTR_REMAP_TABLE_ENTRIES 65536
260
261struct ir_table {
262 struct irte *base;
263};
264#endif
265
266struct intel_iommu {
267 void __iomem *reg; /* Pointer to hardware regs, virtual addr */
268 u64 cap;
269 u64 ecap;
270 int seg;
271 u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */
272 spinlock_t register_lock; /* protect register handling */
273 int seq_id; /* sequence id of the iommu */
274
275#ifdef CONFIG_DMAR
276 unsigned long *domain_ids; /* bitmap of domains */
277 struct dmar_domain **domains; /* ptr to domains */
278 spinlock_t lock; /* protect context, domain ids */
279 struct root_entry *root_entry; /* virtual address */
280
281 unsigned int irq;
282 unsigned char name[7]; /* Device Name */
283 struct msi_msg saved_msg;
284 struct sys_device sysdev;
285#endif
286 struct q_inval *qi; /* Queued invalidation info */
287#ifdef CONFIG_INTR_REMAP
288 struct ir_table *ir_table; /* Interrupt remapping info */
289#endif
290};
291
292static inline void __iommu_flush_cache(
293 struct intel_iommu *iommu, void *addr, int size)
294{
295 if (!ecap_coherent(iommu->ecap))
296 clflush_cache_range(addr, size);
297}
298
299extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);
300
301extern int alloc_iommu(struct dmar_drhd_unit *drhd);
302extern void free_iommu(struct intel_iommu *iommu);
303extern int dmar_enable_qi(struct intel_iommu *iommu);
304extern void qi_global_iec(struct intel_iommu *iommu);
305
306extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
307#endif
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index bb642cc5e18c..738d4c89581c 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -4,7 +4,7 @@
4#include <linux/pci.h> 4#include <linux/pci.h>
5#include <linux/irq.h> 5#include <linux/irq.h>
6#include <asm/io_apic.h> 6#include <asm/io_apic.h>
7#include "intel-iommu.h" 7#include <linux/intel-iommu.h>
8#include "intr_remapping.h" 8#include "intr_remapping.h"
9 9
10static struct ioapic_scope ir_ioapic[MAX_IO_APICS]; 10static struct ioapic_scope ir_ioapic[MAX_IO_APICS];
diff --git a/drivers/pci/intr_remapping.h b/drivers/pci/intr_remapping.h
index 05f2635bbe4e..ca48f0df8ac9 100644
--- a/drivers/pci/intr_remapping.h
+++ b/drivers/pci/intr_remapping.h
@@ -1,4 +1,4 @@
1#include "intel-iommu.h" 1#include <linux/intel-iommu.h>
2 2
3struct ioapic_scope { 3struct ioapic_scope {
4 struct intel_iommu *iommu; 4 struct intel_iommu *iommu;
diff --git a/drivers/pci/iova.c b/drivers/pci/iova.c
index 3ef4ac064315..2287116e9822 100644
--- a/drivers/pci/iova.c
+++ b/drivers/pci/iova.c
@@ -7,7 +7,7 @@
7 * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> 7 * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
8 */ 8 */
9 9
10#include "iova.h" 10#include <linux/iova.h>
11 11
12void 12void
13init_iova_domain(struct iova_domain *iovad, unsigned long pfn_32bit) 13init_iova_domain(struct iova_domain *iovad, unsigned long pfn_32bit)
diff --git a/drivers/pci/iova.h b/drivers/pci/iova.h
deleted file mode 100644
index 228f6c94b69c..000000000000
--- a/drivers/pci/iova.h
+++ /dev/null
@@ -1,52 +0,0 @@
1/*
2 * Copyright (c) 2006, Intel Corporation.
3 *
4 * This file is released under the GPLv2.
5 *
6 * Copyright (C) 2006-2008 Intel Corporation
7 * Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
8 *
9 */
10
11#ifndef _IOVA_H_
12#define _IOVA_H_
13
14#include <linux/types.h>
15#include <linux/kernel.h>
16#include <linux/rbtree.h>
17#include <linux/dma-mapping.h>
18
19/* IO virtual address start page frame number */
20#define IOVA_START_PFN (1)
21
22/* iova structure */
23struct iova {
24 struct rb_node node;
25 unsigned long pfn_hi; /* IOMMU dish out addr hi */
26 unsigned long pfn_lo; /* IOMMU dish out addr lo */
27};
28
29/* holds all the iova translations for a domain */
30struct iova_domain {
31 spinlock_t iova_alloc_lock;/* Lock to protect iova allocation */
32 spinlock_t iova_rbtree_lock; /* Lock to protect update of rbtree */
33 struct rb_root rbroot; /* iova domain rbtree root */
34 struct rb_node *cached32_node; /* Save last alloced node */
35 unsigned long dma_32bit_pfn;
36};
37
38struct iova *alloc_iova_mem(void);
39void free_iova_mem(struct iova *iova);
40void free_iova(struct iova_domain *iovad, unsigned long pfn);
41void __free_iova(struct iova_domain *iovad, struct iova *iova);
42struct iova *alloc_iova(struct iova_domain *iovad, unsigned long size,
43 unsigned long limit_pfn,
44 bool size_aligned);
45struct iova *reserve_iova(struct iova_domain *iovad, unsigned long pfn_lo,
46 unsigned long pfn_hi);
47void copy_reserved_iova(struct iova_domain *from, struct iova_domain *to);
48void init_iova_domain(struct iova_domain *iovad, unsigned long pfn_32bit);
49struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn);
50void put_iova_domain(struct iova_domain *iovad);
51
52#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 06:30:56 -0500