2 * S/390 misc helper routines
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2009 Alexander Graf
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 #include "exec/memory.h"
23 #include "qemu/host-utils.h"
26 #include "sysemu/kvm.h"
27 #include "qemu/timer.h"
29 #include <linux/kvm.h>
32 #if !defined(CONFIG_USER_ONLY)
33 #include "exec/softmmu_exec.h"
34 #include "sysemu/sysemu.h"
37 /* #define DEBUG_HELPER */
39 #define HELPER_LOG(x...) qemu_log(x)
41 #define HELPER_LOG(x...)
44 /* Raise an exception dynamically from a helper function. */
45 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
50 env->exception_index = EXCP_PGM;
51 env->int_pgm_code = excp;
53 /* Use the (ultimate) callers address to find the insn that trapped. */
54 cpu_restore_state(env, retaddr);
56 /* Advance past the insn. */
57 t = cpu_ldub_code(env, env->psw.addr);
58 env->int_pgm_ilen = t = get_ilen(t);
59 env->psw.addr += 2 * t;
64 /* Raise an exception statically from a TB. */
65 void HELPER(exception)(CPUS390XState *env, uint32_t excp)
67 HELPER_LOG("%s: exception %d\n", __func__, excp);
68 env->exception_index = excp;
72 #ifndef CONFIG_USER_ONLY
73 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen)
75 qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n",
80 kvm_s390_interrupt(s390_env_get_cpu(env), KVM_S390_PROGRAM_INT, code);
83 env->int_pgm_code = code;
84 env->int_pgm_ilen = ilen;
85 env->exception_index = EXCP_PGM;
90 /* SCLP service call */
91 uint32_t HELPER(servc)(CPUS390XState *env, uint32_t r1, uint64_t r2)
95 r = sclp_service_call(r1, r2);
97 program_interrupt(env, -r, 4);
104 uint64_t HELPER(diag)(CPUS390XState *env, uint32_t num, uint64_t mem,
112 r = s390_virtio_hypercall(env, mem, code);
128 program_interrupt(env, PGM_OPERATION, ILEN_LATER_INC);
135 void HELPER(spx)(CPUS390XState *env, uint64_t a1)
137 uint32_t prefix = a1 & 0x7fffe000;
139 qemu_log("prefix: %#x\n", prefix);
140 tlb_flush_page(env, 0);
141 tlb_flush_page(env, TARGET_PAGE_SIZE);
144 static inline uint64_t clock_value(CPUS390XState *env)
148 time = env->tod_offset +
149 time2tod(qemu_get_clock_ns(vm_clock) - env->tod_basetime);
155 uint64_t HELPER(stck)(CPUS390XState *env)
157 return clock_value(env);
160 /* Set Clock Comparator */
161 void HELPER(sckc)(CPUS390XState *env, uint64_t time)
167 /* difference between now and then */
168 time -= clock_value(env);
170 time = (time * 125) >> 9;
172 qemu_mod_timer(env->tod_timer, qemu_get_clock_ns(vm_clock) + time);
175 /* Store Clock Comparator */
176 uint64_t HELPER(stckc)(CPUS390XState *env)
183 void HELPER(spt)(CPUS390XState *env, uint64_t time)
190 time = (time * 125) >> 9;
192 qemu_mod_timer(env->cpu_timer, qemu_get_clock_ns(vm_clock) + time);
195 /* Store CPU Timer */
196 uint64_t HELPER(stpt)(CPUS390XState *env)
202 /* Store System Information */
203 uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0, uint32_t r0,
209 if ((r0 & STSI_LEVEL_MASK) <= STSI_LEVEL_3 &&
210 ((r0 & STSI_R0_RESERVED_MASK) || (r1 & STSI_R1_RESERVED_MASK))) {
211 /* valid function code, invalid reserved bits */
212 program_interrupt(env, PGM_SPECIFICATION, 2);
215 sel1 = r0 & STSI_R0_SEL1_MASK;
216 sel2 = r1 & STSI_R1_SEL2_MASK;
218 /* XXX: spec exception if sysib is not 4k-aligned */
220 switch (r0 & STSI_LEVEL_MASK) {
222 if ((sel1 == 1) && (sel2 == 1)) {
223 /* Basic Machine Configuration */
224 struct sysib_111 sysib;
226 memset(&sysib, 0, sizeof(sysib));
227 ebcdic_put(sysib.manuf, "QEMU ", 16);
228 /* same as machine type number in STORE CPU ID */
229 ebcdic_put(sysib.type, "QEMU", 4);
230 /* same as model number in STORE CPU ID */
231 ebcdic_put(sysib.model, "QEMU ", 16);
232 ebcdic_put(sysib.sequence, "QEMU ", 16);
233 ebcdic_put(sysib.plant, "QEMU", 4);
234 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
235 } else if ((sel1 == 2) && (sel2 == 1)) {
236 /* Basic Machine CPU */
237 struct sysib_121 sysib;
239 memset(&sysib, 0, sizeof(sysib));
240 /* XXX make different for different CPUs? */
241 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
242 ebcdic_put(sysib.plant, "QEMU", 4);
243 stw_p(&sysib.cpu_addr, env->cpu_num);
244 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
245 } else if ((sel1 == 2) && (sel2 == 2)) {
246 /* Basic Machine CPUs */
247 struct sysib_122 sysib;
249 memset(&sysib, 0, sizeof(sysib));
250 stl_p(&sysib.capability, 0x443afc29);
251 /* XXX change when SMP comes */
252 stw_p(&sysib.total_cpus, 1);
253 stw_p(&sysib.active_cpus, 1);
254 stw_p(&sysib.standby_cpus, 0);
255 stw_p(&sysib.reserved_cpus, 0);
256 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
263 if ((sel1 == 2) && (sel2 == 1)) {
265 struct sysib_221 sysib;
267 memset(&sysib, 0, sizeof(sysib));
268 /* XXX make different for different CPUs? */
269 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
270 ebcdic_put(sysib.plant, "QEMU", 4);
271 stw_p(&sysib.cpu_addr, env->cpu_num);
272 stw_p(&sysib.cpu_id, 0);
273 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
274 } else if ((sel1 == 2) && (sel2 == 2)) {
276 struct sysib_222 sysib;
278 memset(&sysib, 0, sizeof(sysib));
279 stw_p(&sysib.lpar_num, 0);
281 /* XXX change when SMP comes */
282 stw_p(&sysib.total_cpus, 1);
283 stw_p(&sysib.conf_cpus, 1);
284 stw_p(&sysib.standby_cpus, 0);
285 stw_p(&sysib.reserved_cpus, 0);
286 ebcdic_put(sysib.name, "QEMU ", 8);
287 stl_p(&sysib.caf, 1000);
288 stw_p(&sysib.dedicated_cpus, 0);
289 stw_p(&sysib.shared_cpus, 0);
290 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
298 if ((sel1 == 2) && (sel2 == 2)) {
300 struct sysib_322 sysib;
302 memset(&sysib, 0, sizeof(sysib));
304 /* XXX change when SMP comes */
305 stw_p(&sysib.vm[0].total_cpus, 1);
306 stw_p(&sysib.vm[0].conf_cpus, 1);
307 stw_p(&sysib.vm[0].standby_cpus, 0);
308 stw_p(&sysib.vm[0].reserved_cpus, 0);
309 ebcdic_put(sysib.vm[0].name, "KVMguest", 8);
310 stl_p(&sysib.vm[0].caf, 1000);
311 ebcdic_put(sysib.vm[0].cpi, "KVM/Linux ", 16);
312 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
318 case STSI_LEVEL_CURRENT:
319 env->regs[0] = STSI_LEVEL_3;
329 uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1,
334 HELPER_LOG("%s: %016" PRIx64 " %08x %016" PRIx64 "\n",
335 __func__, order_code, r1, cpu_addr);
337 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
338 as parameter (input). Status (output) is always R1. */
340 switch (order_code) {
345 /* enumerate CPU status */
347 /* XXX implement when SMP comes */
350 env->regs[r1] &= 0xffffffff00000000ULL;
353 #if !defined(CONFIG_USER_ONLY)
355 qemu_system_reset_request();
359 qemu_system_shutdown_request();
365 fprintf(stderr, "XXX unknown sigp: 0x%" PRIx64 "\n", order_code);