 5bf4ceec10
			
		
	
	
		5bf4ceec10
		
	
	
	
	
		
			
			Having two functions with the same name is a bad idea. As spapr only uses the function locally, made it static. When you compile with clang, you get this compilation error: /usr/bin/ld: tests/qtest/libqos/libqos.fa.p/.._libqtest.c.o: in function `qtest_rtas_call': /scratch/qemu/clang/full/all/../../../../../mnt/code/qemu/full/tests/qtest/libqtest.c:1195: multiple definition of `qtest_rtas_call'; libqemu-ppc64-softmmu.fa.p/hw_ppc_spapr_rtas.c.o:/scratch/qemu/clang/full/all/../../../../../mnt/code/qemu/full/hw/ppc/spapr_rtas.c:536: first defined here clang-16: error: linker command failed with exit code 1 (use -v to see invocation) ninja: build stopped: subcommand failed. make: *** [Makefile:162: run-ninja] Error 1 Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Message-ID: <20231030163834.4638-1-quintela@redhat.com> [dhb: remove 'spapr_rtas.h' include from spapr_rtas.c] Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
		
			
				
	
	
		
			664 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			664 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
 | |
|  * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
 | |
|  *
 | |
|  * Hypercall based emulated RTAS
 | |
|  *
 | |
|  * Copyright (c) 2010-2011 David Gibson, IBM Corporation.
 | |
|  *
 | |
|  * Permission is hereby granted, free of charge, to any person obtaining a copy
 | |
|  * of this software and associated documentation files (the "Software"), to deal
 | |
|  * in the Software without restriction, including without limitation the rights
 | |
|  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 | |
|  * copies of the Software, and to permit persons to whom the Software is
 | |
|  * furnished to do so, subject to the following conditions:
 | |
|  *
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|  * The above copyright notice and this permission notice shall be included in
 | |
|  * all copies or substantial portions of the Software.
 | |
|  *
 | |
|  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 | |
|  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 | |
|  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 | |
|  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 | |
|  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 | |
|  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 | |
|  * THE SOFTWARE.
 | |
|  *
 | |
|  */
 | |
| 
 | |
| #include "qemu/osdep.h"
 | |
| #include "qemu/log.h"
 | |
| #include "qemu/error-report.h"
 | |
| #include "sysemu/sysemu.h"
 | |
| #include "sysemu/device_tree.h"
 | |
| #include "sysemu/cpus.h"
 | |
| #include "sysemu/hw_accel.h"
 | |
| #include "sysemu/runstate.h"
 | |
| #include "sysemu/qtest.h"
 | |
| #include "kvm_ppc.h"
 | |
| 
 | |
| #include "hw/ppc/spapr.h"
 | |
| #include "hw/ppc/spapr_vio.h"
 | |
| #include "hw/ppc/spapr_cpu_core.h"
 | |
| #include "hw/ppc/ppc.h"
 | |
| 
 | |
| #include <libfdt.h>
 | |
| #include "hw/ppc/spapr_drc.h"
 | |
| #include "qemu/cutils.h"
 | |
| #include "trace.h"
 | |
| #include "hw/ppc/fdt.h"
 | |
| #include "target/ppc/mmu-hash64.h"
 | |
| #include "target/ppc/mmu-book3s-v3.h"
 | |
| #include "migration/blocker.h"
 | |
| #include "helper_regs.h"
 | |
| 
 | |
| static void rtas_display_character(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                                    uint32_t token, uint32_t nargs,
 | |
|                                    target_ulong args,
 | |
|                                    uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     uint8_t c = rtas_ld(args, 0);
 | |
|     SpaprVioDevice *sdev = vty_lookup(spapr, 0);
 | |
| 
 | |
|     if (!sdev) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
 | |
|     } else {
 | |
|         vty_putchars(sdev, &c, sizeof(c));
 | |
|         rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|     }
 | |
| }
 | |
| 
 | |
| static void rtas_power_off(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                            uint32_t token, uint32_t nargs, target_ulong args,
 | |
|                            uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     if (nargs != 2 || nret != 1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
|     qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
 | |
|     cpu_stop_current();
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static void rtas_system_reboot(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                                uint32_t token, uint32_t nargs,
 | |
|                                target_ulong args,
 | |
|                                uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     if (nargs != 0 || nret != 1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
|     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static void rtas_query_cpu_stopped_state(PowerPCCPU *cpu_,
 | |
|                                          SpaprMachineState *spapr,
 | |
|                                          uint32_t token, uint32_t nargs,
 | |
|                                          target_ulong args,
 | |
|                                          uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     target_ulong id;
 | |
|     PowerPCCPU *cpu;
 | |
| 
 | |
|     if (nargs != 1 || nret != 2) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     id = rtas_ld(args, 0);
 | |
|     cpu = spapr_find_cpu(id);
 | |
|     if (cpu != NULL) {
 | |
|         if (CPU(cpu)->halted) {
 | |
|             rtas_st(rets, 1, 0);
 | |
|         } else {
 | |
|             rtas_st(rets, 1, 2);
 | |
|         }
 | |
| 
 | |
|         rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     /* Didn't find a matching cpu */
 | |
|     rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
| }
 | |
| 
 | |
| static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
 | |
|                            uint32_t token, uint32_t nargs,
 | |
|                            target_ulong args,
 | |
|                            uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     target_ulong id, start, r3;
 | |
|     PowerPCCPU *newcpu;
 | |
|     CPUPPCState *env;
 | |
|     target_ulong lpcr;
 | |
|     target_ulong caller_lpcr;
 | |
| 
 | |
|     if (nargs != 3 || nret != 1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     id = rtas_ld(args, 0);
 | |
|     start = rtas_ld(args, 1);
 | |
|     r3 = rtas_ld(args, 2);
 | |
| 
 | |
|     newcpu = spapr_find_cpu(id);
 | |
|     if (!newcpu) {
 | |
|         /* Didn't find a matching cpu */
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     env = &newcpu->env;
 | |
| 
 | |
|     if (!CPU(newcpu)->halted) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     cpu_synchronize_state(CPU(newcpu));
 | |
| 
 | |
|     env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
 | |
|     hreg_compute_hflags(env);
 | |
| 
 | |
|     caller_lpcr = callcpu->env.spr[SPR_LPCR];
 | |
|     lpcr = env->spr[SPR_LPCR];
 | |
| 
 | |
|     /* Set ILE the same way */
 | |
|     lpcr = (lpcr & ~LPCR_ILE) | (caller_lpcr & LPCR_ILE);
 | |
| 
 | |
|     /* Set AIL the same way */
 | |
|     lpcr = (lpcr & ~LPCR_AIL) | (caller_lpcr & LPCR_AIL);
 | |
| 
 | |
|     if (env->mmu_model == POWERPC_MMU_3_00) {
 | |
|         /*
 | |
|          * New cpus are expected to start in the same radix/hash mode
 | |
|          * as the existing CPUs
 | |
|          */
 | |
|         if (ppc64_v3_radix(callcpu)) {
 | |
|             lpcr |= LPCR_UPRT | LPCR_GTSE | LPCR_HR;
 | |
|         } else {
 | |
|             lpcr &= ~(LPCR_UPRT | LPCR_GTSE | LPCR_HR);
 | |
|         }
 | |
|         env->spr[SPR_PSSCR] &= ~PSSCR_EC;
 | |
|     }
 | |
|     ppc_store_lpcr(newcpu, lpcr);
 | |
| 
 | |
|     /*
 | |
|      * Set the timebase offset of the new CPU to that of the invoking
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|      * CPU.  This helps hotplugged CPU to have the correct timebase
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|      * offset.
 | |
|      */
 | |
|     newcpu->env.tb_env->tb_offset = callcpu->env.tb_env->tb_offset;
 | |
| 
 | |
|     spapr_cpu_set_entry_state(newcpu, start, 0, r3, 0);
 | |
| 
 | |
|     qemu_cpu_kick(CPU(newcpu));
 | |
| 
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static void rtas_stop_self(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                            uint32_t token, uint32_t nargs,
 | |
|                            target_ulong args,
 | |
|                            uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     CPUState *cs = CPU(cpu);
 | |
|     CPUPPCState *env = &cpu->env;
 | |
|     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
 | |
| 
 | |
|     /* Disable Power-saving mode Exit Cause exceptions for the CPU.
 | |
|      * This could deliver an interrupt on a dying CPU and crash the
 | |
|      * guest.
 | |
|      * For the same reason, set PSSCR_EC.
 | |
|      */
 | |
|     env->spr[SPR_PSSCR] |= PSSCR_EC;
 | |
|     cs->halted = 1;
 | |
|     ppc_store_lpcr(cpu, env->spr[SPR_LPCR] & ~pcc->lpcr_pm);
 | |
|     kvmppc_set_reg_ppc_online(cpu, 0);
 | |
|     qemu_cpu_kick(cs);
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_suspend_me(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                                 uint32_t token, uint32_t nargs,
 | |
|                                 target_ulong args,
 | |
|                                 uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     CPUState *cs;
 | |
| 
 | |
|     if (nargs != 0 || nret != 1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     CPU_FOREACH(cs) {
 | |
|         PowerPCCPU *c = POWERPC_CPU(cs);
 | |
|         CPUPPCState *e = &c->env;
 | |
|         if (c == cpu) {
 | |
|             continue;
 | |
|         }
 | |
| 
 | |
|         /* See h_join */
 | |
|         if (!cs->halted || (e->msr & (1ULL << MSR_EE))) {
 | |
|             rtas_st(rets, 0, H_MULTI_THREADS_ACTIVE);
 | |
|             return;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     qemu_system_suspend_request();
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static inline int sysparm_st(target_ulong addr, target_ulong len,
 | |
|                              const void *val, uint16_t vallen)
 | |
| {
 | |
|     hwaddr phys = ppc64_phys_to_real(addr);
 | |
| 
 | |
|     if (len < 2) {
 | |
|         return RTAS_OUT_SYSPARM_PARAM_ERROR;
 | |
|     }
 | |
|     stw_be_phys(&address_space_memory, phys, vallen);
 | |
|     cpu_physical_memory_write(phys + 2, val, MIN(len - 2, vallen));
 | |
|     return RTAS_OUT_SUCCESS;
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu,
 | |
|                                           SpaprMachineState *spapr,
 | |
|                                           uint32_t token, uint32_t nargs,
 | |
|                                           target_ulong args,
 | |
|                                           uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
 | |
|     MachineState *ms = MACHINE(spapr);
 | |
|     target_ulong parameter = rtas_ld(args, 0);
 | |
|     target_ulong buffer = rtas_ld(args, 1);
 | |
|     target_ulong length = rtas_ld(args, 2);
 | |
|     target_ulong ret;
 | |
| 
 | |
|     switch (parameter) {
 | |
|     case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: {
 | |
|         g_autofree char *param_val = g_strdup_printf("MaxEntCap=%d,"
 | |
|                                                      "DesMem=%" PRIu64 ","
 | |
|                                                      "DesProcs=%d,"
 | |
|                                                      "MaxPlatProcs=%d",
 | |
|                                                      ms->smp.max_cpus,
 | |
|                                                      ms->ram_size / MiB,
 | |
|                                                      ms->smp.cpus,
 | |
|                                                      ms->smp.max_cpus);
 | |
|         if (pcc->n_host_threads > 0) {
 | |
|             /*
 | |
|              * Add HostThrs property. This property is not present in PAPR but
 | |
|              * is expected by some guests to communicate the number of physical
 | |
|              * host threads per core on the system so that they can scale
 | |
|              * information which varies based on the thread configuration.
 | |
|              */
 | |
|             g_autofree char *hostthr_val = g_strdup_printf(",HostThrs=%d",
 | |
|                                                            pcc->n_host_threads);
 | |
|             char *old = param_val;
 | |
| 
 | |
|             param_val = g_strconcat(param_val, hostthr_val, NULL);
 | |
|             g_free(old);
 | |
|         }
 | |
|         ret = sysparm_st(buffer, length, param_val, strlen(param_val) + 1);
 | |
|         break;
 | |
|     }
 | |
|     case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: {
 | |
|         uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED;
 | |
| 
 | |
|         ret = sysparm_st(buffer, length, ¶m_val, sizeof(param_val));
 | |
|         break;
 | |
|     }
 | |
|     case RTAS_SYSPARM_UUID:
 | |
|         ret = sysparm_st(buffer, length, (unsigned char *)&qemu_uuid,
 | |
|                          (qemu_uuid_set ? 16 : 0));
 | |
|         break;
 | |
|     default:
 | |
|         ret = RTAS_OUT_NOT_SUPPORTED;
 | |
|     }
 | |
| 
 | |
|     rtas_st(rets, 0, ret);
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu,
 | |
|                                           SpaprMachineState *spapr,
 | |
|                                           uint32_t token, uint32_t nargs,
 | |
|                                           target_ulong args,
 | |
|                                           uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     target_ulong parameter = rtas_ld(args, 0);
 | |
|     target_ulong ret = RTAS_OUT_NOT_SUPPORTED;
 | |
| 
 | |
|     switch (parameter) {
 | |
|     case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS:
 | |
|     case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE:
 | |
|     case RTAS_SYSPARM_UUID:
 | |
|         ret = RTAS_OUT_NOT_AUTHORIZED;
 | |
|         break;
 | |
|     }
 | |
| 
 | |
|     rtas_st(rets, 0, ret);
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_os_term(PowerPCCPU *cpu,
 | |
|                             SpaprMachineState *spapr,
 | |
|                             uint32_t token, uint32_t nargs,
 | |
|                             target_ulong args,
 | |
|                             uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     target_ulong msgaddr = rtas_ld(args, 0);
 | |
|     char msg[512];
 | |
| 
 | |
|     cpu_physical_memory_read(msgaddr, msg, sizeof(msg) - 1);
 | |
|     msg[sizeof(msg) - 1] = 0;
 | |
| 
 | |
|     error_report("OS terminated: %s", msg);
 | |
|     qemu_system_guest_panicked(NULL);
 | |
| 
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static void rtas_set_power_level(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                                  uint32_t token, uint32_t nargs,
 | |
|                                  target_ulong args, uint32_t nret,
 | |
|                                  target_ulong rets)
 | |
| {
 | |
|     int32_t power_domain;
 | |
| 
 | |
|     if (nargs != 2 || nret != 2) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     /* we currently only use a single, "live insert" powerdomain for
 | |
|      * hotplugged/dlpar'd resources, so the power is always live/full (100)
 | |
|      */
 | |
|     power_domain = rtas_ld(args, 0);
 | |
|     if (power_domain != -1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|     rtas_st(rets, 1, 100);
 | |
| }
 | |
| 
 | |
| static void rtas_get_power_level(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                                   uint32_t token, uint32_t nargs,
 | |
|                                   target_ulong args, uint32_t nret,
 | |
|                                   target_ulong rets)
 | |
| {
 | |
|     int32_t power_domain;
 | |
| 
 | |
|     if (nargs != 1 || nret != 2) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     /* we currently only use a single, "live insert" powerdomain for
 | |
|      * hotplugged/dlpar'd resources, so the power is always live/full (100)
 | |
|      */
 | |
|     power_domain = rtas_ld(args, 0);
 | |
|     if (power_domain != -1) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|     rtas_st(rets, 1, 100);
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_nmi_register(PowerPCCPU *cpu,
 | |
|                                   SpaprMachineState *spapr,
 | |
|                                   uint32_t token, uint32_t nargs,
 | |
|                                   target_ulong args,
 | |
|                                   uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     hwaddr rtas_addr;
 | |
|     target_ulong sreset_addr, mce_addr;
 | |
| 
 | |
|     if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_OFF) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     rtas_addr = spapr_get_rtas_addr();
 | |
|     if (!rtas_addr) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     sreset_addr = rtas_ld(args, 0);
 | |
|     mce_addr = rtas_ld(args, 1);
 | |
| 
 | |
|     /* PAPR requires these are in the first 32M of memory and within RMA */
 | |
|     if (sreset_addr >= 32 * MiB || sreset_addr >= spapr->rma_size ||
 | |
|            mce_addr >= 32 * MiB ||    mce_addr >= spapr->rma_size) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     if (kvm_enabled()) {
 | |
|         if (kvmppc_set_fwnmi(cpu) < 0) {
 | |
|             rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|             return;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     spapr->fwnmi_system_reset_addr = sreset_addr;
 | |
|     spapr->fwnmi_machine_check_addr = mce_addr;
 | |
| 
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
| }
 | |
| 
 | |
| static void rtas_ibm_nmi_interlock(PowerPCCPU *cpu,
 | |
|                                    SpaprMachineState *spapr,
 | |
|                                    uint32_t token, uint32_t nargs,
 | |
|                                    target_ulong args,
 | |
|                                    uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_OFF) {
 | |
|         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     if (spapr->fwnmi_machine_check_addr == -1) {
 | |
|         qemu_log_mask(LOG_GUEST_ERROR,
 | |
| "FWNMI: ibm,nmi-interlock RTAS called with FWNMI not registered.\n");
 | |
| 
 | |
|         /* NMI register not called */
 | |
|         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     if (spapr->fwnmi_machine_check_interlock != cpu->vcpu_id) {
 | |
|         /*
 | |
|          * The vCPU that hit the NMI should invoke "ibm,nmi-interlock"
 | |
|          * This should be PARAM_ERROR, but Linux calls "ibm,nmi-interlock"
 | |
|          * for system reset interrupts, despite them not being interlocked.
 | |
|          * PowerVM silently ignores this and returns success here. Returning
 | |
|          * failure causes Linux to print the error "FWNMI: nmi-interlock
 | |
|          * failed: -3", although no other apparent ill effects, this is a
 | |
|          * regression for the user when enabling FWNMI. So for now, match
 | |
|          * PowerVM. When most Linux clients are fixed, this could be
 | |
|          * changed.
 | |
|          */
 | |
|         rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     /*
 | |
|      * vCPU issuing "ibm,nmi-interlock" is done with NMI handling,
 | |
|      * hence unset fwnmi_machine_check_interlock.
 | |
|      */
 | |
|     spapr->fwnmi_machine_check_interlock = -1;
 | |
|     qemu_cond_signal(&spapr->fwnmi_machine_check_interlock_cond);
 | |
|     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 | |
|     migrate_del_blocker(&spapr->fwnmi_migration_blocker);
 | |
| }
 | |
| 
 | |
| static struct rtas_call {
 | |
|     const char *name;
 | |
|     spapr_rtas_fn fn;
 | |
| } rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE];
 | |
| 
 | |
| target_ulong spapr_rtas_call(PowerPCCPU *cpu, SpaprMachineState *spapr,
 | |
|                              uint32_t token, uint32_t nargs, target_ulong args,
 | |
|                              uint32_t nret, target_ulong rets)
 | |
| {
 | |
|     if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) {
 | |
|         struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE);
 | |
| 
 | |
|         if (call->fn) {
 | |
|             call->fn(cpu, spapr, token, nargs, args, nret, rets);
 | |
|             return H_SUCCESS;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /* HACK: Some Linux early debug code uses RTAS display-character,
 | |
|      * but assumes the token value is 0xa (which it is on some real
 | |
|      * machines) without looking it up in the device tree.  This
 | |
|      * special case makes this work */
 | |
|     if (token == 0xa) {
 | |
|         rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets);
 | |
|         return H_SUCCESS;
 | |
|     }
 | |
| 
 | |
|     hcall_dprintf("Unknown RTAS token 0x%x\n", token);
 | |
|     rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 | |
|     return H_PARAMETER;
 | |
| }
 | |
| 
 | |
| static uint64_t qtest_rtas_call(char *cmd, uint32_t nargs, uint64_t args,
 | |
|                                 uint32_t nret, uint64_t rets)
 | |
| {
 | |
|     int token;
 | |
| 
 | |
|     for (token = 0; token < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; token++) {
 | |
|         if (strcmp(cmd, rtas_table[token].name) == 0) {
 | |
|             SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 | |
|             PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
 | |
| 
 | |
|             rtas_table[token].fn(cpu, spapr, token + RTAS_TOKEN_BASE,
 | |
|                                  nargs, args, nret, rets);
 | |
|             return H_SUCCESS;
 | |
|         }
 | |
|     }
 | |
|     return H_PARAMETER;
 | |
| }
 | |
| 
 | |
| static bool spapr_qtest_callback(CharBackend *chr, gchar **words)
 | |
| {
 | |
|     if (strcmp(words[0], "rtas") == 0) {
 | |
|         uint64_t res, args, ret;
 | |
|         unsigned long nargs, nret;
 | |
|         int rc;
 | |
| 
 | |
|         rc = qemu_strtoul(words[2], NULL, 0, &nargs);
 | |
|         g_assert(rc == 0);
 | |
|         rc = qemu_strtou64(words[3], NULL, 0, &args);
 | |
|         g_assert(rc == 0);
 | |
|         rc = qemu_strtoul(words[4], NULL, 0, &nret);
 | |
|         g_assert(rc == 0);
 | |
|         rc = qemu_strtou64(words[5], NULL, 0, &ret);
 | |
|         g_assert(rc == 0);
 | |
|         res = qtest_rtas_call(words[1], nargs, args, nret, ret);
 | |
| 
 | |
|         qtest_send_prefix(chr);
 | |
|         qtest_sendf(chr, "OK %"PRIu64"\n", res);
 | |
| 
 | |
|         return true;
 | |
|     }
 | |
| 
 | |
|     return false;
 | |
| }
 | |
| 
 | |
| void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn)
 | |
| {
 | |
|     assert((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX));
 | |
| 
 | |
|     token -= RTAS_TOKEN_BASE;
 | |
| 
 | |
|     assert(!name || !rtas_table[token].name);
 | |
| 
 | |
|     rtas_table[token].name = name;
 | |
|     rtas_table[token].fn = fn;
 | |
| }
 | |
| 
 | |
| void spapr_dt_rtas_tokens(void *fdt, int rtas)
 | |
| {
 | |
|     int i;
 | |
| 
 | |
|     for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) {
 | |
|         struct rtas_call *call = &rtas_table[i];
 | |
| 
 | |
|         if (!call->name) {
 | |
|             continue;
 | |
|         }
 | |
| 
 | |
|         _FDT(fdt_setprop_cell(fdt, rtas, call->name, i + RTAS_TOKEN_BASE));
 | |
|     }
 | |
| }
 | |
| 
 | |
| hwaddr spapr_get_rtas_addr(void)
 | |
| {
 | |
|     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 | |
|     int rtas_node;
 | |
|     const fdt32_t *rtas_data;
 | |
|     void *fdt = spapr->fdt_blob;
 | |
| 
 | |
|     /* fetch rtas addr from fdt */
 | |
|     rtas_node = fdt_path_offset(fdt, "/rtas");
 | |
|     if (rtas_node < 0) {
 | |
|         return 0;
 | |
|     }
 | |
| 
 | |
|     rtas_data = fdt_getprop(fdt, rtas_node, "linux,rtas-base", NULL);
 | |
|     if (!rtas_data) {
 | |
|         return 0;
 | |
|     }
 | |
| 
 | |
|     /*
 | |
|      * We assume that the OS called RTAS instantiate-rtas, but some other
 | |
|      * OS might call RTAS instantiate-rtas-64 instead. This fine as of now
 | |
|      * as SLOF only supports 32-bit variant.
 | |
|      */
 | |
|     return (hwaddr)fdt32_to_cpu(*rtas_data);
 | |
| }
 | |
| 
 | |
| static void core_rtas_register_types(void)
 | |
| {
 | |
|     spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character",
 | |
|                         rtas_display_character);
 | |
|     spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off);
 | |
|     spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot",
 | |
|                         rtas_system_reboot);
 | |
|     spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state",
 | |
|                         rtas_query_cpu_stopped_state);
 | |
|     spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu);
 | |
|     spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self);
 | |
|     spapr_rtas_register(RTAS_IBM_SUSPEND_ME, "ibm,suspend-me",
 | |
|                         rtas_ibm_suspend_me);
 | |
|     spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER,
 | |
|                         "ibm,get-system-parameter",
 | |
|                         rtas_ibm_get_system_parameter);
 | |
|     spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER,
 | |
|                         "ibm,set-system-parameter",
 | |
|                         rtas_ibm_set_system_parameter);
 | |
|     spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term",
 | |
|                         rtas_ibm_os_term);
 | |
|     spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level",
 | |
|                         rtas_set_power_level);
 | |
|     spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level",
 | |
|                         rtas_get_power_level);
 | |
|     spapr_rtas_register(RTAS_IBM_NMI_REGISTER, "ibm,nmi-register",
 | |
|                         rtas_ibm_nmi_register);
 | |
|     spapr_rtas_register(RTAS_IBM_NMI_INTERLOCK, "ibm,nmi-interlock",
 | |
|                         rtas_ibm_nmi_interlock);
 | |
| 
 | |
|     qtest_set_command_cb(spapr_qtest_callback);
 | |
| }
 | |
| 
 | |
| type_init(core_rtas_register_types)
 |