From 2283f4d67a0e05ae056d2077f65496c3c4df5d6f Mon Sep 17 00:00:00 2001 From: Fei Li Date: Fri, 17 Feb 2017 15:40:41 +0800 Subject: [PATCH] s390x/sic: realize SIC handling Currently, we do nothing for the SIC instruction, but we need to implement it properly. Let's add proper handling in the backend code. Co-authored-by: Yi Min Zhao Signed-off-by: Yi Min Zhao Signed-off-by: Fei Li Signed-off-by: Christian Borntraeger --- hw/s390x/css.c | 26 ++++++++++++++++++++++++++ hw/s390x/trace-events | 1 + include/hw/s390x/css.h | 2 ++ target/s390x/kvm.c | 16 +++++++++++++++- 4 files changed, 44 insertions(+), 1 deletion(-) diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 1fcbc84581..7b82176bc2 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -521,6 +521,32 @@ void css_conditional_io_interrupt(SubchDev *sch) } } +int css_do_sic(CPUS390XState *env, uint8_t isc, uint16_t mode) +{ + S390FLICState *fs = s390_get_flic(); + S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs); + int r; + + if (env->psw.mask & PSW_MASK_PSTATE) { + r = -PGM_PRIVILEGED; + goto out; + } + + trace_css_do_sic(mode, isc); + switch (mode) { + case SIC_IRQ_MODE_ALL: + case SIC_IRQ_MODE_SINGLE: + break; + default: + r = -PGM_OPERAND; + goto out; + } + + r = fsc->modify_ais_mode(fs, isc, mode) ? -PGM_OPERATION : 0; +out: + return r; +} + void css_adapter_interrupt(uint8_t isc) { uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI; diff --git a/hw/s390x/trace-events b/hw/s390x/trace-events index 84ea964875..f07e974678 100644 --- a/hw/s390x/trace-events +++ b/hw/s390x/trace-events @@ -8,6 +8,7 @@ css_new_image(uint8_t cssid, const char *default_cssid) "CSS: add css image %02x css_assign_subch(const char *do_assign, uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno) "CSS: %s %x.%x.%04x (devno %04x)" css_io_interrupt(int cssid, int ssid, int schid, uint32_t intparm, uint8_t isc, const char *conditional) "CSS: I/O interrupt on sch %x.%x.%04x (intparm %08x, isc %x) %s" css_adapter_interrupt(uint8_t isc) "CSS: adapter I/O interrupt (isc %x)" +css_do_sic(uint16_t mode, uint8_t isc) "CSS: set interruption mode %x on isc %x" # hw/s390x/virtio-ccw.c virtio_ccw_interpret_ccw(int cssid, int ssid, int schid, int cmd_code) "VIRTIO-CCW: %x.%x.%04x: interpret command %x" diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index e028960885..5ee6d522a3 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -12,6 +12,7 @@ #ifndef CSS_H #define CSS_H +#include "cpu.h" #include "hw/s390x/adapter.h" #include "hw/s390x/s390_flic.h" #include "hw/s390x/ioinst.h" @@ -165,6 +166,7 @@ typedef enum { CSS_IO_ADAPTER_TYPE_NUMS, } CssIoAdapterType; +int css_do_sic(CPUS390XState *env, uint8_t isc, uint16_t mode); uint32_t css_get_adapter_id(CssIoAdapterType type, uint8_t isc); void css_register_io_adapters(CssIoAdapterType type, bool swap, bool maskable, uint8_t flags, Error **errp); diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 7a2a7c0895..78ebe831fb 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -1206,7 +1206,21 @@ static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run) static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run) { - /* NOOP */ + CPUS390XState *env = &cpu->env; + uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; + uint8_t r3 = run->s390_sieic.ipa & 0x000f; + uint8_t isc; + uint16_t mode; + int r; + + cpu_synchronize_state(CPU(cpu)); + mode = env->regs[r1] & 0xffff; + isc = (env->regs[r3] >> 27) & 0x7; + r = css_do_sic(env, isc, mode); + if (r) { + enter_pgmcheck(cpu, -r); + } + return 0; } -- GitLab