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 
12 struct device_node;
13 
14 extern void request_event_sources_irqs(struct device_node *np,
15 				       irq_handler_t handler, const char *name);
16 
17 #include <linux/of.h>
18 
19 struct pt_regs;
20 
21 extern int pSeries_system_reset_exception(struct pt_regs *regs);
22 extern int pSeries_machine_check_exception(struct pt_regs *regs);
23 extern long pseries_machine_check_realmode(struct pt_regs *regs);
24 
25 #ifdef CONFIG_SMP
26 extern void smp_init_pseries(void);
27 
28 /* Get state of physical CPU from query_cpu_stopped */
29 int 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
36 static inline void smp_init_pseries(void) { }
37 #endif
38 
39 extern void pseries_kexec_cpu_down(int crash_shutdown, int secondary);
40 
41 extern void pSeries_final_fixup(void);
42 
43 /* Poweron flag used for enabling auto ups restart */
44 extern unsigned long rtas_poweron_auto;
45 
46 /* Provided by HVC VIO */
47 extern void hvc_vio_init_early(void);
48 
49 /* Dynamic logical Partitioning/Mobility */
50 extern void dlpar_free_cc_nodes(struct device_node *);
51 extern void dlpar_free_cc_property(struct property *);
52 extern struct device_node *dlpar_configure_connector(__be32,
53 						struct device_node *);
54 extern int dlpar_attach_node(struct device_node *, struct device_node *);
55 extern int dlpar_detach_node(struct device_node *);
56 extern int dlpar_acquire_drc(u32 drc_index);
57 extern int dlpar_release_drc(u32 drc_index);
58 
59 void queue_hotplug_event(struct pseries_hp_errorlog *hp_errlog);
60 int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_errlog);
61 
62 #ifdef CONFIG_MEMORY_HOTPLUG
63 int dlpar_memory(struct pseries_hp_errorlog *hp_elog);
64 int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog);
65 #else
66 static inline int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
67 {
68 	return -EOPNOTSUPP;
69 }
70 static inline int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog)
71 {
72 	return -EOPNOTSUPP;
73 }
74 #endif
75 
76 #ifdef CONFIG_HOTPLUG_CPU
77 int dlpar_cpu(struct pseries_hp_errorlog *hp_elog);
78 #else
79 static 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 */
86 struct pci_host_bridge;
87 int pseries_root_bridge_prepare(struct pci_host_bridge *bridge);
88 
89 extern struct pci_controller_ops pseries_pci_controller_ops;
90 
91 unsigned long pseries_memory_block_size(void);
92 
93 extern int CMO_PrPSP;
94 extern int CMO_SecPSP;
95 extern unsigned long CMO_PageSize;
96 
97 static inline int cmo_get_primary_psp(void)
98 {
99 	return CMO_PrPSP;
100 }
101 
102 static inline int cmo_get_secondary_psp(void)
103 {
104 	return CMO_SecPSP;
105 }
106 
107 static inline unsigned long cmo_get_page_size(void)
108 {
109 	return CMO_PageSize;
110 }
111 
112 int dlpar_workqueue_init(void);
113 
114 void pseries_setup_security_mitigations(void);
115 void pseries_lpar_read_hblkrm_characteristics(void);
116 
117 #endif /* _PSERIES_PSERIES_H */
118