1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright IBM Corp. 2007
4 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
5 */
6
7 #ifndef _ASM_S390_SCLP_H
8 #define _ASM_S390_SCLP_H
9
10 #include <linux/types.h>
11 #include <asm/chpid.h>
12 #include <asm/cpu.h>
13
14 #define SCLP_CHP_INFO_MASK_SIZE 32
15 #define EARLY_SCCB_SIZE PAGE_SIZE
16 #define SCLP_MAX_CORES 512
17 /* 144 + 16 * SCLP_MAX_CORES + 2 * (SCLP_MAX_CORES - 1) */
18 #define EXT_SCCB_READ_SCP (3 * PAGE_SIZE)
19 /* 24 + 16 * SCLP_MAX_CORES */
20 #define EXT_SCCB_READ_CPU (3 * PAGE_SIZE)
21
22 struct sclp_chp_info {
23 u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
24 u8 standby[SCLP_CHP_INFO_MASK_SIZE];
25 u8 configured[SCLP_CHP_INFO_MASK_SIZE];
26 };
27
28 #define LOADPARM_LEN 8
29
30 struct sclp_ipl_info {
31 int is_valid;
32 int has_dump;
33 char loadparm[LOADPARM_LEN];
34 };
35
36 struct sclp_core_entry {
37 u8 core_id;
38 u8 reserved0;
39 u8 : 4;
40 u8 sief2 : 1;
41 u8 skey : 1;
42 u8 : 2;
43 u8 : 2;
44 u8 gpere : 1;
45 u8 siif : 1;
46 u8 sigpif : 1;
47 u8 : 3;
48 u8 reserved2[3];
49 u8 : 2;
50 u8 ib : 1;
51 u8 cei : 1;
52 u8 : 4;
53 u8 reserved3[6];
54 u8 type;
55 u8 reserved1;
56 } __attribute__((packed));
57
58 struct sclp_core_info {
59 unsigned int configured;
60 unsigned int standby;
61 unsigned int combined;
62 struct sclp_core_entry core[SCLP_MAX_CORES];
63 };
64
65 struct sclp_info {
66 unsigned char has_linemode : 1;
67 unsigned char has_vt220 : 1;
68 unsigned char has_siif : 1;
69 unsigned char has_sigpif : 1;
70 unsigned char has_core_type : 1;
71 unsigned char has_sprp : 1;
72 unsigned char has_hvs : 1;
73 unsigned char has_esca : 1;
74 unsigned char has_sief2 : 1;
75 unsigned char has_64bscao : 1;
76 unsigned char has_gpere : 1;
77 unsigned char has_cmma : 1;
78 unsigned char has_gsls : 1;
79 unsigned char has_ib : 1;
80 unsigned char has_cei : 1;
81 unsigned char has_pfmfi : 1;
82 unsigned char has_ibs : 1;
83 unsigned char has_skey : 1;
84 unsigned char has_kss : 1;
85 unsigned char has_gisaf : 1;
86 unsigned char has_diag318 : 1;
87 unsigned char has_sipl : 1;
88 unsigned char has_dirq : 1;
89 unsigned int ibc;
90 unsigned int mtid;
91 unsigned int mtid_cp;
92 unsigned int mtid_prev;
93 unsigned long rzm;
94 unsigned long rnmax;
95 unsigned long hamax;
96 unsigned int max_cores;
97 unsigned long hsa_size;
98 unsigned long facilities;
99 unsigned int hmfai;
100 };
101 extern struct sclp_info sclp;
102
103 struct zpci_report_error_header {
104 u8 version; /* Interface version byte */
105 u8 action; /* Action qualifier byte
106 * 0: Adapter Reset Request
107 * 1: Deconfigure and repair action requested
108 * (OpenCrypto Problem Call Home)
109 * 2: Informational Report
110 * (OpenCrypto Successful Diagnostics Execution)
111 */
112 u16 length; /* Length of Subsequent Data (up to 4K – SCLP header */
113 u8 data[0]; /* Subsequent Data passed verbatim to SCLP ET 24 */
114 } __packed;
115
116 int sclp_early_read_info(void);
117 int sclp_early_read_storage_info(void);
118 int sclp_early_get_core_info(struct sclp_core_info *info);
119 void sclp_early_get_ipl_info(struct sclp_ipl_info *info);
120 void sclp_early_detect(void);
121 void sclp_early_printk(const char *s);
122 void __sclp_early_printk(const char *s, unsigned int len);
123
124 int sclp_early_get_memsize(unsigned long *mem);
125 int sclp_early_get_hsa_size(unsigned long *hsa_size);
126 int _sclp_get_core_info(struct sclp_core_info *info);
127 int sclp_core_configure(u8 core);
128 int sclp_core_deconfigure(u8 core);
129 int sclp_sdias_blk_count(void);
130 int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
131 int sclp_chp_configure(struct chp_id chpid);
132 int sclp_chp_deconfigure(struct chp_id chpid);
133 int sclp_chp_read_info(struct sclp_chp_info *info);
134 int sclp_pci_configure(u32 fid);
135 int sclp_pci_deconfigure(u32 fid);
136 int sclp_ap_configure(u32 apid);
137 int sclp_ap_deconfigure(u32 apid);
138 int sclp_pci_report(struct zpci_report_error_header *report, u32 fh, u32 fid);
139 int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count);
140 int memcpy_hsa_user(void __user *dest, unsigned long src, size_t count);
141 void sclp_ocf_cpc_name_copy(char *dst);
142
sclp_get_core_info(struct sclp_core_info * info,int early)143 static inline int sclp_get_core_info(struct sclp_core_info *info, int early)
144 {
145 if (early)
146 return sclp_early_get_core_info(info);
147 return _sclp_get_core_info(info);
148 }
149
150 #endif /* _ASM_S390_SCLP_H */
151