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11#ifndef S390_CCW_H
12#define S390_CCW_H
13
14
15
16typedef unsigned char u8;
17typedef unsigned short u16;
18typedef unsigned int u32;
19typedef unsigned long long u64;
20typedef unsigned long ulong;
21typedef unsigned char __u8;
22typedef unsigned short __u16;
23typedef unsigned int __u32;
24typedef unsigned long long __u64;
25
26#define true 1
27#define false 0
28#define PAGE_SIZE 4096
29
30#ifndef EIO
31#define EIO 1
32#endif
33#ifndef EBUSY
34#define EBUSY 2
35#endif
36#ifndef NULL
37#define NULL 0
38#endif
39#ifndef MIN
40#define MIN(a, b) (((a) < (b)) ? (a) : (b))
41#endif
42#ifndef MIN_NON_ZERO
43#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
44 ((b) == 0 ? (a) : (MIN(a, b))))
45#endif
46
47#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
48
49#include "cio.h"
50#include "iplb.h"
51
52typedef struct irb Irb;
53typedef struct ccw1 Ccw1;
54typedef struct cmd_orb CmdOrb;
55typedef struct schib Schib;
56typedef struct chsc_area_sda ChscAreaSda;
57typedef struct senseid SenseId;
58typedef struct subchannel_id SubChannelId;
59
60
61void disabled_wait(void);
62void consume_sclp_int(void);
63
64
65void panic(const char *string);
66void write_subsystem_identification(void);
67extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
68unsigned int get_loadparm_index(void);
69
70
71void sclp_print(const char *string);
72void sclp_set_write_mask(uint32_t receive_mask, uint32_t send_mask);
73void sclp_setup(void);
74void sclp_get_loadparm_ascii(char *loadparm);
75int sclp_read(char *str, size_t count);
76
77
78unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
79 ulong subchan_id, void *load_addr);
80bool virtio_is_supported(SubChannelId schid);
81void virtio_blk_setup_device(SubChannelId schid);
82int virtio_read(ulong sector, void *load_addr);
83int enable_mss_facility(void);
84u64 get_clock(void);
85ulong get_second(void);
86
87
88void zipl_load(void);
89
90
91void menu_set_parms(uint8_t boot_menu_flag, uint32_t boot_menu_timeout);
92int menu_get_zipl_boot_index(const char *menu_data);
93bool menu_is_enabled_zipl(void);
94int menu_get_enum_boot_index(int entries);
95bool menu_is_enabled_enum(void);
96
97static inline void fill_hex(char *out, unsigned char val)
98{
99 const char hex[] = "0123456789abcdef";
100
101 out[0] = hex[(val >> 4) & 0xf];
102 out[1] = hex[val & 0xf];
103}
104
105static inline void fill_hex_val(char *out, void *ptr, unsigned size)
106{
107 unsigned char *value = ptr;
108 unsigned int i;
109
110 for (i = 0; i < size; i++) {
111 fill_hex(&out[i*2], value[i]);
112 }
113}
114
115static inline void print_int(const char *desc, u64 addr)
116{
117 char out[] = ": 0xffffffffffffffff\n";
118
119 fill_hex_val(&out[4], &addr, sizeof(addr));
120
121 sclp_print(desc);
122 sclp_print(out);
123}
124
125static inline void debug_print_int(const char *desc, u64 addr)
126{
127#ifdef DEBUG
128 print_int(desc, addr);
129#endif
130}
131
132static inline void debug_print_addr(const char *desc, void *p)
133{
134#ifdef DEBUG
135 debug_print_int(desc, (unsigned int)(unsigned long)p);
136#endif
137}
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142
143#define KVM_S390_VIRTIO_NOTIFY 0
144#define KVM_S390_VIRTIO_RESET 1
145#define KVM_S390_VIRTIO_SET_STATUS 2
146#define KVM_S390_VIRTIO_CCW_NOTIFY 3
147
148static inline void yield(void)
149{
150 asm volatile ("diag 0,0,0x44"
151 : :
152 : "memory", "cc");
153}
154
155#define MAX_SECTOR_SIZE 4096
156
157static inline void sleep(unsigned int seconds)
158{
159 ulong target = get_second() + seconds;
160
161 while (get_second() < target) {
162 yield();
163 }
164}
165
166static inline void IPL_assert(bool term, const char *message)
167{
168 if (!term) {
169 sclp_print("\n! ");
170 sclp_print(message);
171 panic(" !\n");
172 }
173}
174
175static inline void IPL_check(bool term, const char *message)
176{
177 if (!term) {
178 sclp_print("\n! WARNING: ");
179 sclp_print(message);
180 sclp_print(" !\n");
181 }
182}
183
184extern const unsigned char ebc2asc[256];
185static inline void ebcdic_to_ascii(const char *src,
186 char *dst,
187 unsigned int size)
188{
189 unsigned int i;
190
191 for (i = 0; i < size; i++) {
192 unsigned c = src[i];
193 dst[i] = ebc2asc[c];
194 }
195}
196
197#endif
198