Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e04d0d07 IY |
2 | #ifndef INCLUDE_XEN_OPS_H |
3 | #define INCLUDE_XEN_OPS_H | |
4 | ||
5 | #include <linux/percpu.h> | |
cd979883 | 6 | #include <linux/notifier.h> |
be81c8a1 | 7 | #include <linux/efi.h> |
251e90e7 | 8 | #include <linux/virtio_anchor.h> |
f030aade | 9 | #include <xen/features.h> |
7892f692 | 10 | #include <asm/xen/interface.h> |
4ccefbe5 | 11 | #include <xen/interface/vcpu.h> |
e04d0d07 IY |
12 | |
13 | DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); | |
14 | ||
55467dea VK |
15 | DECLARE_PER_CPU(uint32_t, xen_vcpu_id); |
16 | static inline uint32_t xen_vcpu_nr(int cpu) | |
88e957d6 VK |
17 | { |
18 | return per_cpu(xen_vcpu_id, cpu); | |
19 | } | |
20 | ||
0b64ffb8 AA |
21 | #define XEN_VCPU_ID_INVALID U32_MAX |
22 | ||
03c8142b IC |
23 | void xen_arch_pre_suspend(void); |
24 | void xen_arch_post_suspend(int suspend_cancelled); | |
0e91398f | 25 | |
ad55db9f IY |
26 | void xen_timer_resume(void); |
27 | void xen_arch_resume(void); | |
2b953a5e | 28 | void xen_arch_suspend(void); |
ad55db9f | 29 | |
5d9404e1 JG |
30 | void xen_reboot(int reason); |
31 | ||
cd979883 SG |
32 | void xen_resume_notifier_register(struct notifier_block *nb); |
33 | void xen_resume_notifier_unregister(struct notifier_block *nb); | |
34 | ||
4ccefbe5 SS |
35 | bool xen_vcpu_stolen(int vcpu); |
36 | void xen_setup_runstate_info(int cpu); | |
ecb23dc6 | 37 | void xen_time_setup_guest(void); |
5e25f5db | 38 | void xen_manage_runstate_time(int action); |
4ccefbe5 | 39 | void xen_get_runstate_snapshot(struct vcpu_runstate_info *res); |
d34c30cc | 40 | u64 xen_steal_clock(int cpu); |
4ccefbe5 | 41 | |
016b6f5f SS |
42 | int xen_setup_shutdown_event(void); |
43 | ||
08bbc9da | 44 | extern unsigned long *xen_contiguous_bitmap; |
16624390 | 45 | |
f9005571 SS |
46 | #if defined(CONFIG_XEN_PV) |
47 | int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr, | |
48 | xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot, | |
97315723 | 49 | unsigned int domid, bool no_translate); |
f9005571 | 50 | #else |
f030aade JG |
51 | static inline int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr, |
52 | xen_pfn_t *pfn, int nr, int *err_ptr, | |
53 | pgprot_t prot, unsigned int domid, | |
97315723 | 54 | bool no_translate) |
f030aade JG |
55 | { |
56 | BUG(); | |
57 | return 0; | |
58 | } | |
16624390 | 59 | #endif |
08bbc9da | 60 | |
c140d879 | 61 | struct vm_area_struct; |
4e8c0c8c | 62 | |
f030aade JG |
63 | #ifdef CONFIG_XEN_AUTO_XLATE |
64 | int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, | |
65 | unsigned long addr, | |
66 | xen_pfn_t *gfn, int nr, | |
67 | int *err_ptr, pgprot_t prot, | |
68 | unsigned int domid, | |
69 | struct page **pages); | |
70 | int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, | |
71 | int nr, struct page **pages); | |
72 | #else | |
73 | /* | |
74 | * These two functions are called from arch/x86/xen/mmu.c and so stubs | |
75 | * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE. | |
76 | */ | |
77 | static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, | |
78 | unsigned long addr, | |
79 | xen_pfn_t *gfn, int nr, | |
80 | int *err_ptr, pgprot_t prot, | |
81 | unsigned int domid, | |
82 | struct page **pages) | |
83 | { | |
84 | return -EOPNOTSUPP; | |
85 | } | |
86 | ||
87 | static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, | |
88 | int nr, struct page **pages) | |
89 | { | |
90 | return -EOPNOTSUPP; | |
91 | } | |
92 | #endif | |
93 | ||
a78d14a3 AB |
94 | int xen_remap_vma_range(struct vm_area_struct *vma, unsigned long addr, |
95 | unsigned long len); | |
96 | ||
4e8c0c8c | 97 | /* |
3ad08765 | 98 | * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn |
4e8c0c8c DV |
99 | * @vma: VMA to map the pages into |
100 | * @addr: Address at which to map the pages | |
101 | * @gfn: Array of GFNs to map | |
102 | * @nr: Number entries in the GFN array | |
103 | * @err_ptr: Returns per-GFN error status. | |
104 | * @prot: page protection mask | |
105 | * @domid: Domain owning the pages | |
106 | * @pages: Array of pages if this domain has an auto-translated physmap | |
107 | * | |
108 | * @gfn and @err_ptr may point to the same buffer, the GFNs will be | |
109 | * overwritten by the error codes after they are mapped. | |
110 | * | |
111 | * Returns the number of successfully mapped frames, or a -ve error | |
112 | * code. | |
113 | */ | |
f030aade JG |
114 | static inline int xen_remap_domain_gfn_array(struct vm_area_struct *vma, |
115 | unsigned long addr, | |
116 | xen_pfn_t *gfn, int nr, | |
117 | int *err_ptr, pgprot_t prot, | |
118 | unsigned int domid, | |
119 | struct page **pages) | |
120 | { | |
121 | if (xen_feature(XENFEAT_auto_translated_physmap)) | |
122 | return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr, | |
123 | prot, domid, pages); | |
124 | ||
125 | /* We BUG_ON because it's a programmer error to pass a NULL err_ptr, | |
126 | * and the consequences later is quite hard to detect what the actual | |
127 | * cause of "wrong memory was mapped in". | |
128 | */ | |
129 | BUG_ON(err_ptr == NULL); | |
130 | return xen_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid, | |
97315723 | 131 | false); |
f030aade | 132 | } |
4e8c0c8c | 133 | |
3ad08765 PD |
134 | /* |
135 | * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn | |
136 | * @vma: VMA to map the pages into | |
137 | * @addr: Address at which to map the pages | |
138 | * @mfn: Array of MFNs to map | |
139 | * @nr: Number entries in the MFN array | |
140 | * @err_ptr: Returns per-MFN error status. | |
141 | * @prot: page protection mask | |
142 | * @domid: Domain owning the pages | |
3ad08765 PD |
143 | * |
144 | * @mfn and @err_ptr may point to the same buffer, the MFNs will be | |
145 | * overwritten by the error codes after they are mapped. | |
146 | * | |
147 | * Returns the number of successfully mapped frames, or a -ve error | |
148 | * code. | |
149 | */ | |
f030aade JG |
150 | static inline int xen_remap_domain_mfn_array(struct vm_area_struct *vma, |
151 | unsigned long addr, xen_pfn_t *mfn, | |
152 | int nr, int *err_ptr, | |
97315723 | 153 | pgprot_t prot, unsigned int domid) |
f030aade JG |
154 | { |
155 | if (xen_feature(XENFEAT_auto_translated_physmap)) | |
156 | return -EOPNOTSUPP; | |
157 | ||
158 | return xen_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid, | |
97315723 | 159 | true); |
f030aade | 160 | } |
3ad08765 | 161 | |
a13d7201 | 162 | /* xen_remap_domain_gfn_range() - map a range of foreign frames |
4e8c0c8c DV |
163 | * @vma: VMA to map the pages into |
164 | * @addr: Address at which to map the pages | |
165 | * @gfn: First GFN to map. | |
166 | * @nr: Number frames to map | |
167 | * @prot: page protection mask | |
168 | * @domid: Domain owning the pages | |
169 | * @pages: Array of pages if this domain has an auto-translated physmap | |
170 | * | |
171 | * Returns the number of successfully mapped frames, or a -ve error | |
172 | * code. | |
173 | */ | |
f030aade JG |
174 | static inline int xen_remap_domain_gfn_range(struct vm_area_struct *vma, |
175 | unsigned long addr, | |
176 | xen_pfn_t gfn, int nr, | |
177 | pgprot_t prot, unsigned int domid, | |
178 | struct page **pages) | |
ec4001c3 | 179 | { |
f030aade JG |
180 | if (xen_feature(XENFEAT_auto_translated_physmap)) |
181 | return -EOPNOTSUPP; | |
ec4001c3 | 182 | |
97315723 | 183 | return xen_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false); |
ec4001c3 | 184 | } |
f030aade JG |
185 | |
186 | int xen_unmap_domain_gfn_range(struct vm_area_struct *vma, | |
187 | int numpgs, struct page **pages); | |
ec4001c3 | 188 | |
243848fc SZ |
189 | int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr, |
190 | unsigned long nr_grant_frames); | |
de1ef206 | 191 | |
394b40f6 | 192 | bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); |
be81c8a1 | 193 | |
09515706 | 194 | void xen_efi_runtime_setup(void); |
e371fd76 | 195 | |
be81c8a1 | 196 | |
2f6474e4 | 197 | #if defined(CONFIG_XEN_PV) && !defined(CONFIG_PREEMPTION) |
fdfd811d DV |
198 | |
199 | DECLARE_PER_CPU(bool, xen_in_preemptible_hcall); | |
200 | ||
201 | static inline void xen_preemptible_hcall_begin(void) | |
202 | { | |
203 | __this_cpu_write(xen_in_preemptible_hcall, true); | |
204 | } | |
205 | ||
206 | static inline void xen_preemptible_hcall_end(void) | |
207 | { | |
208 | __this_cpu_write(xen_in_preemptible_hcall, false); | |
209 | } | |
210 | ||
2f6474e4 TG |
211 | #else |
212 | ||
213 | static inline void xen_preemptible_hcall_begin(void) { } | |
214 | static inline void xen_preemptible_hcall_end(void) { } | |
215 | ||
216 | #endif /* CONFIG_XEN_PV && !CONFIG_PREEMPTION */ | |
fdfd811d | 217 | |
d6aca350 | 218 | #ifdef CONFIG_XEN_GRANT_DMA_OPS |
61367688 | 219 | bool xen_virtio_restricted_mem_acc(struct virtio_device *dev); |
d6aca350 | 220 | #else |
251e90e7 JG |
221 | struct virtio_device; |
222 | ||
61367688 JG |
223 | static inline bool xen_virtio_restricted_mem_acc(struct virtio_device *dev) |
224 | { | |
225 | return false; | |
226 | } | |
d6aca350 JG |
227 | #endif /* CONFIG_XEN_GRANT_DMA_OPS */ |
228 | ||
e04d0d07 | 229 | #endif /* INCLUDE_XEN_OPS_H */ |