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, uint64_t r1, uint64_t r2)
93 int r = sclp_service_call(r1, r2);
95 program_interrupt(env, -r, 4);
102 uint64_t HELPER(diag)(CPUS390XState *env, uint32_t num, uint64_t mem,
110 r = s390_virtio_hypercall(env, mem, code);
126 program_interrupt(env, PGM_OPERATION, ILEN_LATER_INC);
133 void HELPER(spx)(CPUS390XState *env, uint64_t a1)
135 uint32_t prefix = a1 & 0x7fffe000;
137 qemu_log("prefix: %#x\n", prefix);
138 tlb_flush_page(env, 0);
139 tlb_flush_page(env, TARGET_PAGE_SIZE);
142 static inline uint64_t clock_value(CPUS390XState *env)
146 time = env->tod_offset +
147 time2tod(qemu_get_clock_ns(vm_clock) - env->tod_basetime);
153 uint64_t HELPER(stck)(CPUS390XState *env)
155 return clock_value(env);
158 /* Set Clock Comparator */
159 void HELPER(sckc)(CPUS390XState *env, uint64_t time)
165 /* difference between now and then */
166 time -= clock_value(env);
168 time = (time * 125) >> 9;
170 qemu_mod_timer(env->tod_timer, qemu_get_clock_ns(vm_clock) + time);
173 /* Store Clock Comparator */
174 uint64_t HELPER(stckc)(CPUS390XState *env)
181 void HELPER(spt)(CPUS390XState *env, uint64_t time)
188 time = (time * 125) >> 9;
190 qemu_mod_timer(env->cpu_timer, qemu_get_clock_ns(vm_clock) + time);
193 /* Store CPU Timer */
194 uint64_t HELPER(stpt)(CPUS390XState *env)
200 /* Store System Information */
201 uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0,
202 uint64_t r0, uint64_t r1)
207 if ((r0 & STSI_LEVEL_MASK) <= STSI_LEVEL_3 &&
208 ((r0 & STSI_R0_RESERVED_MASK) || (r1 & STSI_R1_RESERVED_MASK))) {
209 /* valid function code, invalid reserved bits */
210 program_interrupt(env, PGM_SPECIFICATION, 2);
213 sel1 = r0 & STSI_R0_SEL1_MASK;
214 sel2 = r1 & STSI_R1_SEL2_MASK;
216 /* XXX: spec exception if sysib is not 4k-aligned */
218 switch (r0 & STSI_LEVEL_MASK) {
220 if ((sel1 == 1) && (sel2 == 1)) {
221 /* Basic Machine Configuration */
222 struct sysib_111 sysib;
224 memset(&sysib, 0, sizeof(sysib));
225 ebcdic_put(sysib.manuf, "QEMU ", 16);
226 /* same as machine type number in STORE CPU ID */
227 ebcdic_put(sysib.type, "QEMU", 4);
228 /* same as model number in STORE CPU ID */
229 ebcdic_put(sysib.model, "QEMU ", 16);
230 ebcdic_put(sysib.sequence, "QEMU ", 16);
231 ebcdic_put(sysib.plant, "QEMU", 4);
232 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
233 } else if ((sel1 == 2) && (sel2 == 1)) {
234 /* Basic Machine CPU */
235 struct sysib_121 sysib;
237 memset(&sysib, 0, sizeof(sysib));
238 /* XXX make different for different CPUs? */
239 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
240 ebcdic_put(sysib.plant, "QEMU", 4);
241 stw_p(&sysib.cpu_addr, env->cpu_num);
242 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
243 } else if ((sel1 == 2) && (sel2 == 2)) {
244 /* Basic Machine CPUs */
245 struct sysib_122 sysib;
247 memset(&sysib, 0, sizeof(sysib));
248 stl_p(&sysib.capability, 0x443afc29);
249 /* XXX change when SMP comes */
250 stw_p(&sysib.total_cpus, 1);
251 stw_p(&sysib.active_cpus, 1);
252 stw_p(&sysib.standby_cpus, 0);
253 stw_p(&sysib.reserved_cpus, 0);
254 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
261 if ((sel1 == 2) && (sel2 == 1)) {
263 struct sysib_221 sysib;
265 memset(&sysib, 0, sizeof(sysib));
266 /* XXX make different for different CPUs? */
267 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
268 ebcdic_put(sysib.plant, "QEMU", 4);
269 stw_p(&sysib.cpu_addr, env->cpu_num);
270 stw_p(&sysib.cpu_id, 0);
271 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
272 } else if ((sel1 == 2) && (sel2 == 2)) {
274 struct sysib_222 sysib;
276 memset(&sysib, 0, sizeof(sysib));
277 stw_p(&sysib.lpar_num, 0);
279 /* XXX change when SMP comes */
280 stw_p(&sysib.total_cpus, 1);
281 stw_p(&sysib.conf_cpus, 1);
282 stw_p(&sysib.standby_cpus, 0);
283 stw_p(&sysib.reserved_cpus, 0);
284 ebcdic_put(sysib.name, "QEMU ", 8);
285 stl_p(&sysib.caf, 1000);
286 stw_p(&sysib.dedicated_cpus, 0);
287 stw_p(&sysib.shared_cpus, 0);
288 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
296 if ((sel1 == 2) && (sel2 == 2)) {
298 struct sysib_322 sysib;
300 memset(&sysib, 0, sizeof(sysib));
302 /* XXX change when SMP comes */
303 stw_p(&sysib.vm[0].total_cpus, 1);
304 stw_p(&sysib.vm[0].conf_cpus, 1);
305 stw_p(&sysib.vm[0].standby_cpus, 0);
306 stw_p(&sysib.vm[0].reserved_cpus, 0);
307 ebcdic_put(sysib.vm[0].name, "KVMguest", 8);
308 stl_p(&sysib.vm[0].caf, 1000);
309 ebcdic_put(sysib.vm[0].cpi, "KVM/Linux ", 16);
310 cpu_physical_memory_rw(a0, (uint8_t *)&sysib, sizeof(sysib), 1);
316 case STSI_LEVEL_CURRENT:
317 env->regs[0] = STSI_LEVEL_3;
327 uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1,
332 HELPER_LOG("%s: %016" PRIx64 " %08x %016" PRIx64 "\n",
333 __func__, order_code, r1, cpu_addr);
335 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
336 as parameter (input). Status (output) is always R1. */
338 switch (order_code) {
343 /* enumerate CPU status */
345 /* XXX implement when SMP comes */
348 env->regs[r1] &= 0xffffffff00000000ULL;
351 #if !defined(CONFIG_USER_ONLY)
353 qemu_system_reset_request();
357 qemu_system_shutdown_request();
363 fprintf(stderr, "XXX unknown sigp: 0x%" PRIx64 "\n", order_code);