1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright 2006 IBM Corporation.
4 */
5
6#ifndef _PSERIES_PSERIES_H
7#define _PSERIES_PSERIES_H
8
9#include <linux/interrupt.h>
10#include <asm/rtas.h>
11
12struct device_node;
13
14extern void request_event_sources_irqs(struct device_node *np,
15				       irq_handler_t handler, const char *name);
16
17#include <linux/of.h>
18
19struct pt_regs;
20
21extern int pSeries_system_reset_exception(struct pt_regs *regs);
22extern int pSeries_machine_check_exception(struct pt_regs *regs);
23extern long pseries_machine_check_realmode(struct pt_regs *regs);
24
25#ifdef CONFIG_SMP
26extern void smp_init_pseries(void);
27
28/* Get state of physical CPU from query_cpu_stopped */
29int smp_query_cpu_stopped(unsigned int pcpu);
30#define QCSS_STOPPED 0
31#define QCSS_STOPPING 1
32#define QCSS_NOT_STOPPED 2
33#define QCSS_HARDWARE_ERROR -1
34#define QCSS_HARDWARE_BUSY -2
35#else
36static inline void smp_init_pseries(void) { };
37#endif
38
39extern void pseries_kexec_cpu_down(int crash_shutdown, int secondary);
40
41extern void pSeries_final_fixup(void);
42
43/* Poweron flag used for enabling auto ups restart */
44extern unsigned long rtas_poweron_auto;
45
46/* Provided by HVC VIO */
47extern void hvc_vio_init_early(void);
48
49/* Dynamic logical Partitioning/Mobility */
50extern void dlpar_free_cc_nodes(struct device_node *);
51extern void dlpar_free_cc_property(struct property *);
52extern struct device_node *dlpar_configure_connector(__be32,
53						struct device_node *);
54extern int dlpar_attach_node(struct device_node *, struct device_node *);
55extern int dlpar_detach_node(struct device_node *);
56extern int dlpar_acquire_drc(u32 drc_index);
57extern int dlpar_release_drc(u32 drc_index);
58
59void queue_hotplug_event(struct pseries_hp_errorlog *hp_errlog);
60int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_errlog);
61
62#ifdef CONFIG_MEMORY_HOTPLUG
63int dlpar_memory(struct pseries_hp_errorlog *hp_elog);
64int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog);
65#else
66static inline int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
67{
68	return -EOPNOTSUPP;
69}
70static inline int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog)
71{
72	return -EOPNOTSUPP;
73}
74#endif
75
76#ifdef CONFIG_HOTPLUG_CPU
77int dlpar_cpu(struct pseries_hp_errorlog *hp_elog);
78#else
79static inline int dlpar_cpu(struct pseries_hp_errorlog *hp_elog)
80{
81	return -EOPNOTSUPP;
82}
83#endif
84
85/* PCI root bridge prepare function override for pseries */
86struct pci_host_bridge;
87int pseries_root_bridge_prepare(struct pci_host_bridge *bridge);
88
89extern struct pci_controller_ops pseries_pci_controller_ops;
90
91unsigned long pseries_memory_block_size(void);
92
93extern int CMO_PrPSP;
94extern int CMO_SecPSP;
95extern unsigned long CMO_PageSize;
96
97static inline int cmo_get_primary_psp(void)
98{
99	return CMO_PrPSP;
100}
101
102static inline int cmo_get_secondary_psp(void)
103{
104	return CMO_SecPSP;
105}
106
107static inline unsigned long cmo_get_page_size(void)
108{
109	return CMO_PageSize;
110}
111
112int dlpar_workqueue_init(void);
113
114void pseries_setup_security_mitigations(void);
115void pseries_lpar_read_hblkrm_characteristics(void);
116
117void pseries_rng_init(void);
118
119#endif /* _PSERIES_PSERIES_H */
120