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> |
f030aade | 8 | #include <xen/features.h> |
7892f692 | 9 | #include <asm/xen/interface.h> |
4ccefbe5 | 10 | #include <xen/interface/vcpu.h> |
e04d0d07 IY |
11 | |
12 | DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); | |
13 | ||
55467dea VK |
14 | DECLARE_PER_CPU(uint32_t, xen_vcpu_id); |
15 | static inline uint32_t xen_vcpu_nr(int cpu) | |
88e957d6 VK |
16 | { |
17 | return per_cpu(xen_vcpu_id, cpu); | |
18 | } | |
19 | ||
0b64ffb8 AA |
20 | #define XEN_VCPU_ID_INVALID U32_MAX |
21 | ||
03c8142b IC |
22 | void xen_arch_pre_suspend(void); |
23 | void xen_arch_post_suspend(int suspend_cancelled); | |
0e91398f | 24 | |
ad55db9f IY |
25 | void xen_timer_resume(void); |
26 | void xen_arch_resume(void); | |
2b953a5e | 27 | void xen_arch_suspend(void); |
ad55db9f | 28 | |
5d9404e1 JG |
29 | void xen_reboot(int reason); |
30 | ||
cd979883 SG |
31 | void xen_resume_notifier_register(struct notifier_block *nb); |
32 | void xen_resume_notifier_unregister(struct notifier_block *nb); | |
33 | ||
4ccefbe5 SS |
34 | bool xen_vcpu_stolen(int vcpu); |
35 | void xen_setup_runstate_info(int cpu); | |
ecb23dc6 | 36 | void xen_time_setup_guest(void); |
5e25f5db | 37 | void xen_manage_runstate_time(int action); |
4ccefbe5 | 38 | void xen_get_runstate_snapshot(struct vcpu_runstate_info *res); |
d34c30cc | 39 | u64 xen_steal_clock(int cpu); |
4ccefbe5 | 40 | |
016b6f5f SS |
41 | int xen_setup_shutdown_event(void); |
42 | ||
08bbc9da | 43 | extern unsigned long *xen_contiguous_bitmap; |
16624390 | 44 | |
f9005571 | 45 | #if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) |
1b65c4e5 | 46 | int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, |
69908907 SS |
47 | unsigned int address_bits, |
48 | dma_addr_t *dma_handle); | |
08bbc9da | 49 | |
1b65c4e5 | 50 | void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order); |
16624390 VK |
51 | #else |
52 | static inline int xen_create_contiguous_region(phys_addr_t pstart, | |
53 | unsigned int order, | |
54 | unsigned int address_bits, | |
55 | dma_addr_t *dma_handle) | |
56 | { | |
57 | return 0; | |
58 | } | |
59 | ||
60 | static inline void xen_destroy_contiguous_region(phys_addr_t pstart, | |
61 | unsigned int order) { } | |
f9005571 | 62 | #endif |
f030aade | 63 | |
f9005571 SS |
64 | #if defined(CONFIG_XEN_PV) |
65 | int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr, | |
66 | xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot, | |
67 | unsigned int domid, bool no_translate, struct page **pages); | |
68 | #else | |
f030aade JG |
69 | static inline int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr, |
70 | xen_pfn_t *pfn, int nr, int *err_ptr, | |
71 | pgprot_t prot, unsigned int domid, | |
72 | bool no_translate, struct page **pages) | |
73 | { | |
74 | BUG(); | |
75 | return 0; | |
76 | } | |
16624390 | 77 | #endif |
08bbc9da | 78 | |
c140d879 | 79 | struct vm_area_struct; |
4e8c0c8c | 80 | |
f030aade JG |
81 | #ifdef CONFIG_XEN_AUTO_XLATE |
82 | int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, | |
83 | unsigned long addr, | |
84 | xen_pfn_t *gfn, int nr, | |
85 | int *err_ptr, pgprot_t prot, | |
86 | unsigned int domid, | |
87 | struct page **pages); | |
88 | int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, | |
89 | int nr, struct page **pages); | |
90 | #else | |
91 | /* | |
92 | * These two functions are called from arch/x86/xen/mmu.c and so stubs | |
93 | * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE. | |
94 | */ | |
95 | static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, | |
96 | unsigned long addr, | |
97 | xen_pfn_t *gfn, int nr, | |
98 | int *err_ptr, pgprot_t prot, | |
99 | unsigned int domid, | |
100 | struct page **pages) | |
101 | { | |
102 | return -EOPNOTSUPP; | |
103 | } | |
104 | ||
105 | static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, | |
106 | int nr, struct page **pages) | |
107 | { | |
108 | return -EOPNOTSUPP; | |
109 | } | |
110 | #endif | |
111 | ||
a78d14a3 AB |
112 | int xen_remap_vma_range(struct vm_area_struct *vma, unsigned long addr, |
113 | unsigned long len); | |
114 | ||
4e8c0c8c | 115 | /* |
3ad08765 | 116 | * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn |
4e8c0c8c DV |
117 | * @vma: VMA to map the pages into |
118 | * @addr: Address at which to map the pages | |
119 | * @gfn: Array of GFNs to map | |
120 | * @nr: Number entries in the GFN array | |
121 | * @err_ptr: Returns per-GFN error status. | |
122 | * @prot: page protection mask | |
123 | * @domid: Domain owning the pages | |
124 | * @pages: Array of pages if this domain has an auto-translated physmap | |
125 | * | |
126 | * @gfn and @err_ptr may point to the same buffer, the GFNs will be | |
127 | * overwritten by the error codes after they are mapped. | |
128 | * | |
129 | * Returns the number of successfully mapped frames, or a -ve error | |
130 | * code. | |
131 | */ | |
f030aade JG |
132 | static inline int xen_remap_domain_gfn_array(struct vm_area_struct *vma, |
133 | unsigned long addr, | |
134 | xen_pfn_t *gfn, int nr, | |
135 | int *err_ptr, pgprot_t prot, | |
136 | unsigned int domid, | |
137 | struct page **pages) | |
138 | { | |
139 | if (xen_feature(XENFEAT_auto_translated_physmap)) | |
140 | return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr, | |
141 | prot, domid, pages); | |
142 | ||
143 | /* We BUG_ON because it's a programmer error to pass a NULL err_ptr, | |
144 | * and the consequences later is quite hard to detect what the actual | |
145 | * cause of "wrong memory was mapped in". | |
146 | */ | |
147 | BUG_ON(err_ptr == NULL); | |
148 | return xen_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid, | |
149 | false, pages); | |
150 | } | |
4e8c0c8c | 151 | |
3ad08765 PD |
152 | /* |
153 | * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn | |
154 | * @vma: VMA to map the pages into | |
155 | * @addr: Address at which to map the pages | |
156 | * @mfn: Array of MFNs to map | |
157 | * @nr: Number entries in the MFN array | |
158 | * @err_ptr: Returns per-MFN error status. | |
159 | * @prot: page protection mask | |
160 | * @domid: Domain owning the pages | |
161 | * @pages: Array of pages if this domain has an auto-translated physmap | |
162 | * | |
163 | * @mfn and @err_ptr may point to the same buffer, the MFNs will be | |
164 | * overwritten by the error codes after they are mapped. | |
165 | * | |
166 | * Returns the number of successfully mapped frames, or a -ve error | |
167 | * code. | |
168 | */ | |
f030aade JG |
169 | static inline int xen_remap_domain_mfn_array(struct vm_area_struct *vma, |
170 | unsigned long addr, xen_pfn_t *mfn, | |
171 | int nr, int *err_ptr, | |
172 | pgprot_t prot, unsigned int domid, | |
173 | struct page **pages) | |
174 | { | |
175 | if (xen_feature(XENFEAT_auto_translated_physmap)) | |
176 | return -EOPNOTSUPP; | |
177 | ||
178 | return xen_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid, | |
179 | true, pages); | |
180 | } | |
3ad08765 | 181 | |
a13d7201 | 182 | /* xen_remap_domain_gfn_range() - map a range of foreign frames |
4e8c0c8c DV |
183 | * @vma: VMA to map the pages into |
184 | * @addr: Address at which to map the pages | |
185 | * @gfn: First GFN to map. | |
186 | * @nr: Number frames to map | |
187 | * @prot: page protection mask | |
188 | * @domid: Domain owning the pages | |
189 | * @pages: Array of pages if this domain has an auto-translated physmap | |
190 | * | |
191 | * Returns the number of successfully mapped frames, or a -ve error | |
192 | * code. | |
193 | */ | |
f030aade JG |
194 | static inline int xen_remap_domain_gfn_range(struct vm_area_struct *vma, |
195 | unsigned long addr, | |
196 | xen_pfn_t gfn, int nr, | |
197 | pgprot_t prot, unsigned int domid, | |
198 | struct page **pages) | |
ec4001c3 | 199 | { |
f030aade JG |
200 | if (xen_feature(XENFEAT_auto_translated_physmap)) |
201 | return -EOPNOTSUPP; | |
ec4001c3 | 202 | |
f030aade JG |
203 | return xen_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false, |
204 | pages); | |
ec4001c3 | 205 | } |
f030aade JG |
206 | |
207 | int xen_unmap_domain_gfn_range(struct vm_area_struct *vma, | |
208 | int numpgs, struct page **pages); | |
ec4001c3 | 209 | |
243848fc SZ |
210 | int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr, |
211 | unsigned long nr_grant_frames); | |
de1ef206 | 212 | |
394b40f6 | 213 | bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); |
be81c8a1 | 214 | |
09515706 | 215 | void xen_efi_runtime_setup(void); |
e371fd76 | 216 | |
be81c8a1 | 217 | |
d4a3dcbc | 218 | #ifdef CONFIG_PREEMPTION |
fdfd811d DV |
219 | |
220 | static inline void xen_preemptible_hcall_begin(void) | |
221 | { | |
222 | } | |
223 | ||
224 | static inline void xen_preemptible_hcall_end(void) | |
225 | { | |
226 | } | |
227 | ||
228 | #else | |
229 | ||
230 | DECLARE_PER_CPU(bool, xen_in_preemptible_hcall); | |
231 | ||
232 | static inline void xen_preemptible_hcall_begin(void) | |
233 | { | |
234 | __this_cpu_write(xen_in_preemptible_hcall, true); | |
235 | } | |
236 | ||
237 | static inline void xen_preemptible_hcall_end(void) | |
238 | { | |
239 | __this_cpu_write(xen_in_preemptible_hcall, false); | |
240 | } | |
241 | ||
d4a3dcbc | 242 | #endif /* CONFIG_PREEMPTION */ |
fdfd811d | 243 | |
e04d0d07 | 244 | #endif /* INCLUDE_XEN_OPS_H */ |