1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Ultravisor definitions
4 *
5 * Copyright 2019, IBM Corporation.
6 *
7 */
8 #ifndef _ASM_POWERPC_ULTRAVISOR_H
9 #define _ASM_POWERPC_ULTRAVISOR_H
10
11 #include <asm/asm-prototypes.h>
12 #include <asm/ultravisor-api.h>
13 #include <asm/firmware.h>
14
15 int early_init_dt_scan_ultravisor(unsigned long node, const char *uname,
16 int depth, void *data);
17
18 /*
19 * In ultravisor enabled systems, PTCR becomes ultravisor privileged only for
20 * writing and an attempt to write to it will cause a Hypervisor Emulation
21 * Assistance interrupt.
22 */
set_ptcr_when_no_uv(u64 val)23 static inline void set_ptcr_when_no_uv(u64 val)
24 {
25 if (!firmware_has_feature(FW_FEATURE_ULTRAVISOR))
26 mtspr(SPRN_PTCR, val);
27 }
28
uv_register_pate(u64 lpid,u64 dw0,u64 dw1)29 static inline int uv_register_pate(u64 lpid, u64 dw0, u64 dw1)
30 {
31 return ucall_norets(UV_WRITE_PATE, lpid, dw0, dw1);
32 }
33
uv_share_page(u64 pfn,u64 npages)34 static inline int uv_share_page(u64 pfn, u64 npages)
35 {
36 return ucall_norets(UV_SHARE_PAGE, pfn, npages);
37 }
38
uv_unshare_page(u64 pfn,u64 npages)39 static inline int uv_unshare_page(u64 pfn, u64 npages)
40 {
41 return ucall_norets(UV_UNSHARE_PAGE, pfn, npages);
42 }
43
uv_unshare_all_pages(void)44 static inline int uv_unshare_all_pages(void)
45 {
46 return ucall_norets(UV_UNSHARE_ALL_PAGES);
47 }
48
uv_page_in(u64 lpid,u64 src_ra,u64 dst_gpa,u64 flags,u64 page_shift)49 static inline int uv_page_in(u64 lpid, u64 src_ra, u64 dst_gpa, u64 flags,
50 u64 page_shift)
51 {
52 return ucall_norets(UV_PAGE_IN, lpid, src_ra, dst_gpa, flags,
53 page_shift);
54 }
55
uv_page_out(u64 lpid,u64 dst_ra,u64 src_gpa,u64 flags,u64 page_shift)56 static inline int uv_page_out(u64 lpid, u64 dst_ra, u64 src_gpa, u64 flags,
57 u64 page_shift)
58 {
59 return ucall_norets(UV_PAGE_OUT, lpid, dst_ra, src_gpa, flags,
60 page_shift);
61 }
62
uv_register_mem_slot(u64 lpid,u64 start_gpa,u64 size,u64 flags,u64 slotid)63 static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size,
64 u64 flags, u64 slotid)
65 {
66 return ucall_norets(UV_REGISTER_MEM_SLOT, lpid, start_gpa,
67 size, flags, slotid);
68 }
69
uv_unregister_mem_slot(u64 lpid,u64 slotid)70 static inline int uv_unregister_mem_slot(u64 lpid, u64 slotid)
71 {
72 return ucall_norets(UV_UNREGISTER_MEM_SLOT, lpid, slotid);
73 }
74
uv_page_inval(u64 lpid,u64 gpa,u64 page_shift)75 static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift)
76 {
77 return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift);
78 }
79
uv_svm_terminate(u64 lpid)80 static inline int uv_svm_terminate(u64 lpid)
81 {
82 return ucall_norets(UV_SVM_TERMINATE, lpid);
83 }
84
85 #endif /* _ASM_POWERPC_ULTRAVISOR_H */
86