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
15int 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 */
23static 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
29static inline int uv_register_pate(u64 lpid, u64 dw0, u64 dw1)
30{
31	return ucall_norets(UV_WRITE_PATE, lpid, dw0, dw1);
32}
33
34static inline int uv_share_page(u64 pfn, u64 npages)
35{
36	return ucall_norets(UV_SHARE_PAGE, pfn, npages);
37}
38
39static inline int uv_unshare_page(u64 pfn, u64 npages)
40{
41	return ucall_norets(UV_UNSHARE_PAGE, pfn, npages);
42}
43
44static inline int uv_unshare_all_pages(void)
45{
46	return ucall_norets(UV_UNSHARE_ALL_PAGES);
47}
48
49static 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
56static 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
63static 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
70static inline int uv_unregister_mem_slot(u64 lpid, u64 slotid)
71{
72	return ucall_norets(UV_UNREGISTER_MEM_SLOT, lpid, slotid);
73}
74
75static 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
80static 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