s390: Virtual channel subsystem support.
Provide a mechanism for qemu to provide fully virtual subchannels to the guest. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Cornelia Huck
Alexander Graf
parent
7b18aad543
commit
df1fe5bb49
@ -6,3 +6,4 @@ obj-y += sclp.o
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obj-y += event-facility.o
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obj-y += sclpquiesce.o sclpconsole.o
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obj-y += ipl.o
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obj-y += css.o
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1277
hw/s390x/css.c
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1277
hw/s390x/css.c
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File diff suppressed because it is too large
Load Diff
99
hw/s390x/css.h
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99
hw/s390x/css.h
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@ -0,0 +1,99 @@
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/*
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* Channel subsystem structures and definitions.
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*
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* Copyright 2012 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef CSS_H
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#define CSS_H
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#include "ioinst.h"
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/* Channel subsystem constants. */
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#define MAX_SCHID 65535
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#define MAX_SSID 3
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#define MAX_CSSID 254 /* 255 is reserved */
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#define MAX_CHPID 255
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#define MAX_CIWS 62
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typedef struct CIW {
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uint8_t type;
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uint8_t command;
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uint16_t count;
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} QEMU_PACKED CIW;
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typedef struct SenseId {
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/* common part */
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uint8_t reserved; /* always 0x'FF' */
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uint16_t cu_type; /* control unit type */
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uint8_t cu_model; /* control unit model */
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uint16_t dev_type; /* device type */
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uint8_t dev_model; /* device model */
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uint8_t unused; /* padding byte */
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/* extended part */
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CIW ciw[MAX_CIWS]; /* variable # of CIWs */
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} QEMU_PACKED SenseId;
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/* Channel measurements, from linux/drivers/s390/cio/cmf.c. */
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typedef struct CMB {
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uint16_t ssch_rsch_count;
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uint16_t sample_count;
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uint32_t device_connect_time;
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uint32_t function_pending_time;
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uint32_t device_disconnect_time;
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uint32_t control_unit_queuing_time;
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uint32_t device_active_only_time;
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uint32_t reserved[2];
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} QEMU_PACKED CMB;
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typedef struct CMBE {
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uint32_t ssch_rsch_count;
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uint32_t sample_count;
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uint32_t device_connect_time;
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uint32_t function_pending_time;
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uint32_t device_disconnect_time;
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uint32_t control_unit_queuing_time;
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uint32_t device_active_only_time;
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uint32_t device_busy_time;
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uint32_t initial_command_response_time;
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uint32_t reserved[7];
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} QEMU_PACKED CMBE;
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struct SubchDev {
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/* channel-subsystem related things: */
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uint8_t cssid;
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uint8_t ssid;
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uint16_t schid;
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uint16_t devno;
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SCHIB curr_status;
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uint8_t sense_data[32];
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hwaddr channel_prog;
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CCW1 last_cmd;
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bool last_cmd_valid;
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ORB *orb;
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/* transport-provided data: */
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int (*ccw_cb) (SubchDev *, CCW1);
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SenseId id;
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void *driver_data;
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};
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typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid,
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uint16_t schid);
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int css_create_css_image(uint8_t cssid, bool default_image);
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bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno);
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void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid,
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uint16_t devno, SubchDev *sch);
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void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type);
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void css_reset(void);
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void css_reset_sch(SubchDev *sch);
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void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid);
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void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid,
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int hotplugged, int add);
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void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);
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#endif
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@ -399,6 +399,30 @@ void cpu_unlock(void);
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typedef struct SubchDev SubchDev;
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#ifndef CONFIG_USER_ONLY
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SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
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uint16_t schid);
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bool css_subch_visible(SubchDev *sch);
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void css_conditional_io_interrupt(SubchDev *sch);
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int css_do_stsch(SubchDev *sch, SCHIB *schib);
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bool css_schid_final(uint8_t cssid, uint8_t ssid, uint16_t schid);
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int css_do_msch(SubchDev *sch, SCHIB *schib);
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int css_do_xsch(SubchDev *sch);
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int css_do_csch(SubchDev *sch);
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int css_do_hsch(SubchDev *sch);
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int css_do_ssch(SubchDev *sch, ORB *orb);
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int css_do_tsch(SubchDev *sch, IRB *irb);
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int css_do_stcrw(CRW *crw);
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int css_do_tpi(uint64_t addr, int lowcore);
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int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid, uint8_t l_chpid,
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int rfmt, void *buf);
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void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo);
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int css_enable_mcsse(void);
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int css_enable_mss(void);
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int css_do_rsch(SubchDev *sch);
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int css_do_rchp(uint8_t cssid, uint8_t chpid);
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bool css_present(uint8_t cssid);
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#else
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static inline SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
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uint16_t schid)
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{
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@ -479,6 +503,7 @@ static inline bool css_present(uint8_t cssid)
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{
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return false;
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}
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#endif
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static inline void cpu_set_tls(CPUS390XState *env, target_ulong newtls)
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{
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@ -1031,4 +1056,41 @@ void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
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void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
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uintptr_t retaddr);
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#include <sysemu/kvm.h>
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static inline void kvm_s390_io_interrupt(S390CPU *cpu,
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uint16_t subchannel_id,
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uint16_t subchannel_nr,
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uint32_t io_int_parm,
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uint32_t io_int_word)
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{
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}
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static inline void kvm_s390_crw_mchk(S390CPU *cpu)
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{
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}
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static inline void s390_io_interrupt(S390CPU *cpu,
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uint16_t subchannel_id,
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uint16_t subchannel_nr,
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uint32_t io_int_parm,
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uint32_t io_int_word)
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{
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if (kvm_enabled()) {
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kvm_s390_io_interrupt(cpu, subchannel_id, subchannel_nr, io_int_parm,
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io_int_word);
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} else {
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cpu_inject_io(&cpu->env, subchannel_id, subchannel_nr, io_int_parm,
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io_int_word);
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}
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}
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static inline void s390_crw_mchk(S390CPU *cpu)
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{
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if (kvm_enabled()) {
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kvm_s390_crw_mchk(cpu);
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} else {
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cpu_inject_crw_mchk(&cpu->env);
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}
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}
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#endif
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@ -1078,3 +1078,11 @@ ioinst(const char *insn) "IOINST: %s"
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ioinst_sch_id(const char *insn, int cssid, int ssid, int schid) "IOINST: %s (%x.%x.%04x)"
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ioinst_chp_id(const char *insn, int cssid, int chpid) "IOINST: %s (%x.%02x)"
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ioinst_chsc_cmd(uint16_t cmd, uint16_t len) "IOINST: chsc command %04x, len %04x"
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# hw/s390x/css.c
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css_enable_facility(const char *facility) "CSS: enable %s"
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css_crw(uint8_t rsc, uint8_t erc, uint16_t rsid, const char *chained) "CSS: queueing crw: rsc=%x, erc=%x, rsid=%x %s"
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css_chpid_add(uint8_t cssid, uint8_t chpid, uint8_t type) "CSS: add chpid %x.%02x (type %02x)"
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css_new_image(uint8_t cssid, const char *default_cssid) "CSS: add css image %02x %s"
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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)"
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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"
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