loongarch/kvm/exit.c

157 int kvm_emu_iocsr(larch_inst inst, struct kvm_run *run, struct kvm_vcpu *vcpu)
170 	run->iocsr_io.phys_addr = addr;
171 	run->iocsr_io.is_write = 0;
177 		run->iocsr_io.len = 1;
180 		run->iocsr_io.len = 2;
183 		run->iocsr_io.len = 4;
186 		run->iocsr_io.len = 8;
189 		run->iocsr_io.len = 1;
190 		run->iocsr_io.is_write = 1;
193 		run->iocsr_io.len = 2;
194 		run->iocsr_io.is_write = 1;
197 		run->iocsr_io.len = 4;
198 		run->iocsr_io.is_write = 1;
201 		run->iocsr_io.len = 8;
202 		run->iocsr_io.is_write = 1;
208 	if (run->iocsr_io.is_write) {
210 		ret = kvm_io_bus_write(vcpu, KVM_IOCSR_BUS, addr, run->iocsr_io.len, val);
217 			memcpy(run->iocsr_io.data, val, run->iocsr_io.len);
219 		trace_kvm_iocsr(KVM_TRACE_IOCSR_WRITE, run->iocsr_io.len, addr, val);
222 		ret = kvm_io_bus_read(vcpu, KVM_IOCSR_BUS, addr, run->iocsr_io.len, val);
231 		trace_kvm_iocsr(KVM_TRACE_IOCSR_READ, run->iocsr_io.len, addr, NULL);
237 int kvm_complete_iocsr_read(struct kvm_vcpu *vcpu, struct kvm_run *run)
242 	switch (run->iocsr_io.len) {
244 		*gpr = *(s8 *)run->iocsr_io.data;
247 		*gpr = *(s16 *)run->iocsr_io.data;
250 		*gpr = *(s32 *)run->iocsr_io.data;
253 		*gpr = *(s64 *)run->iocsr_io.data;
257 				run->iocsr_io.len, vcpu->arch.badv);
281 	struct kvm_run *run = vcpu->run;
308 				er = kvm_emu_iocsr(inst, run, vcpu);
356 		vcpu->run->exit_reason = KVM_EXIT_MMIO;
359 		vcpu->run->exit_reason = KVM_EXIT_LOONGARCH_IOCSR;
373 	struct kvm_run *run = vcpu->run;
375 	run->mmio.phys_addr = vcpu->arch.badv;
387 			run->mmio.len = 4;
390 			run->mmio.len = 8;
402 			run->mmio.len = 1;
406 			run->mmio.len = 1;
409 			run->mmio.len = 2;
413 			run->mmio.len = 2;
416 			run->mmio.len = 4;
420 			run->mmio.len = 4;
423 			run->mmio.len = 8;
436 			run->mmio.len = 1;
439 			run->mmio.len = 1;
443 			run->mmio.len = 2;
446 			run->mmio.len = 2;
450 			run->mmio.len = 4;
453 			run->mmio.len = 4;
457 			run->mmio.len = 8;
469 		trace_kvm_mmio(KVM_TRACE_MMIO_READ, run->mmio.len, run->mmio.phys_addr, NULL);
478 				      run->mmio.len, &vcpu->arch.gprs[rd]);
488 		run->mmio.is_write = 0;
501 int kvm_complete_mmio_read(struct kvm_vcpu *vcpu, struct kvm_run *run)
508 	switch (run->mmio.len) {
511 			*gpr = *(s8 *)run->mmio.data;
513 			*gpr = *(u8 *)run->mmio.data;
517 			*gpr = *(s16 *)run->mmio.data;
519 			*gpr = *(u16 *)run->mmio.data;
523 			*gpr = *(s32 *)run->mmio.data;
525 			*gpr = *(u32 *)run->mmio.data;
528 		*gpr = *(s64 *)run->mmio.data;
532 				run->mmio.len, vcpu->arch.badv);
537 	trace_kvm_mmio(KVM_TRACE_MMIO_READ, run->mmio.len,
538 			run->mmio.phys_addr, run->mmio.data);
548 	struct kvm_run *run = vcpu->run;
549 	void *data = run->mmio.data;
559 	run->mmio.phys_addr = vcpu->arch.badv;
568 			run->mmio.len = 4;
572 			run->mmio.len = 8;
587 			run->mmio.len = 1;
591 			run->mmio.len = 2;
595 			run->mmio.len = 4;
599 			run->mmio.len = 8;
613 			run->mmio.len = 1;
617 			run->mmio.len = 2;
621 			run->mmio.len = 4;
625 			run->mmio.len = 8;
638 		trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, run->mmio.len, run->mmio.phys_addr, data);
646 		ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, vcpu->arch.badv, run->mmio.len, data);
651 		run->mmio.is_write = 1;
671 	struct kvm_run *run = vcpu->run;
700 		run->exit_reason = KVM_EXIT_MMIO;
720 int kvm_complete_user_service(struct kvm_vcpu *vcpu, struct kvm_run *run)
723 	kvm_write_reg(vcpu, LOONGARCH_GPR_A0, run->hypercall.ret);
738 	struct kvm_run *run = vcpu->run;
752 		run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
895 		vcpu->run->exit_reason = KVM_EXIT_HYPERCALL;
896 		vcpu->run->hypercall.nr = KVM_HCALL_USER_SERVICE;
897 		vcpu->run->hypercall.args[0] = kvm_read_reg(vcpu, LOONGARCH_GPR_A0);
898 		vcpu->run->hypercall.args[1] = kvm_read_reg(vcpu, LOONGARCH_GPR_A1);
899 		vcpu->run->hypercall.args[2] = kvm_read_reg(vcpu, LOONGARCH_GPR_A2);
900 		vcpu->run->hypercall.args[3] = kvm_read_reg(vcpu, LOONGARCH_GPR_A3);
901 		vcpu->run->hypercall.args[4] = kvm_read_reg(vcpu, LOONGARCH_GPR_A4);
902 		vcpu->run->hypercall.args[5] = kvm_read_reg(vcpu, LOONGARCH_GPR_A5);
903 		vcpu->run->hypercall.flags = 0;
907 		vcpu->run->hypercall.ret = KVM_HCALL_INVALID_CODE;
913 			vcpu->run->exit_reason = KVM_EXIT_DEBUG;