2 * S390x DIAG instruction helper functions
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include "qemu/osdep.h"
18 #include "exec/address-spaces.h"
19 #include "exec/exec-all.h"
20 #include "hw/watchdog/wdt_diag288.h"
21 #include "sysemu/cpus.h"
22 #include "hw/s390x/ipl.h"
24 static int modified_clear_reset(S390CPU *cpu)
26 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
30 cpu_synchronize_all_states();
32 run_on_cpu(t, s390_do_cpu_full_reset, RUN_ON_CPU_NULL);
37 scc->load_normal(CPU(cpu));
38 cpu_synchronize_all_post_reset();
43 static inline void s390_do_cpu_reset(CPUState *cs, run_on_cpu_data arg)
45 S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
50 static int load_normal_reset(S390CPU *cpu)
52 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
56 cpu_synchronize_all_states();
58 run_on_cpu(t, s390_do_cpu_reset, RUN_ON_CPU_NULL);
62 scc->initial_cpu_reset(CPU(cpu));
63 scc->load_normal(CPU(cpu));
64 cpu_synchronize_all_post_reset();
69 int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3)
71 uint64_t func = env->regs[r1];
72 uint64_t timeout = env->regs[r1 + 1];
73 uint64_t action = env->regs[r3];
75 DIAG288State *diag288;
76 DIAG288Class *diag288_class;
78 if (r1 % 2 || action != 0) {
82 /* Timeout must be more than 15 seconds except for timer deletion */
83 if (func != WDT_DIAG288_CANCEL && timeout < 15) {
87 obj = object_resolve_path_type("", TYPE_WDT_DIAG288, NULL);
92 diag288 = DIAG288(obj);
93 diag288_class = DIAG288_GET_CLASS(diag288);
94 return diag288_class->handle_timer(diag288, func, timeout);
97 #define DIAG_308_RC_OK 0x0001
98 #define DIAG_308_RC_NO_CONF 0x0102
99 #define DIAG_308_RC_INVALID 0x0402
101 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3)
103 uint64_t addr = env->regs[r1];
104 uint64_t subcode = env->regs[r3];
105 IplParameterBlock *iplb;
107 if (env->psw.mask & PSW_MASK_PSTATE) {
108 program_interrupt(env, PGM_PRIVILEGED, ILEN_AUTO);
112 if ((subcode & ~0x0ffffULL) || (subcode > 6)) {
113 program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO);
119 modified_clear_reset(s390_env_get_cpu(env));
121 cpu_loop_exit(CPU(s390_env_get_cpu(env)));
125 load_normal_reset(s390_env_get_cpu(env));
127 cpu_loop_exit(CPU(s390_env_get_cpu(env)));
131 s390_reipl_request();
133 cpu_loop_exit(CPU(s390_env_get_cpu(env)));
137 if ((r1 & 1) || (addr & 0x0fffULL)) {
138 program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO);
141 if (!address_space_access_valid(&address_space_memory, addr,
142 sizeof(IplParameterBlock), false)) {
143 program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO);
146 iplb = g_malloc0(sizeof(IplParameterBlock));
147 cpu_physical_memory_read(addr, iplb, sizeof(iplb->len));
148 if (!iplb_valid_len(iplb)) {
149 env->regs[r1 + 1] = DIAG_308_RC_INVALID;
153 cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
155 if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb)) {
156 env->regs[r1 + 1] = DIAG_308_RC_INVALID;
160 s390_ipl_update_diag308(iplb);
161 env->regs[r1 + 1] = DIAG_308_RC_OK;
166 if ((r1 & 1) || (addr & 0x0fffULL)) {
167 program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO);
170 if (!address_space_access_valid(&address_space_memory, addr,
171 sizeof(IplParameterBlock), true)) {
172 program_interrupt(env, PGM_ADDRESSING, ILEN_AUTO);
175 iplb = s390_ipl_get_iplb();
177 cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len));
178 env->regs[r1 + 1] = DIAG_308_RC_OK;
180 env->regs[r1 + 1] = DIAG_308_RC_NO_CONF;
184 hw_error("Unhandled diag308 subcode %" PRIx64, subcode);