| /* |
| * Channel subsystem structures and definitions. |
| * |
| * Copyright 2012 IBM Corp. |
| * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| * your option) any later version. See the COPYING file in the top-level |
| * directory. |
| */ |
| |
| #ifndef CSS_H |
| #define CSS_H |
| |
| #include "hw/s390x/adapter.h" |
| #include "hw/s390x/s390_flic.h" |
| #include "hw/s390x/ioinst.h" |
| |
| /* Channel subsystem constants. */ |
| #define MAX_DEVNO 65535 |
| #define MAX_SCHID 65535 |
| #define MAX_SSID 3 |
| #define MAX_CSSID 254 /* 255 is reserved */ |
| #define MAX_CHPID 255 |
| |
| #define MAX_CIWS 62 |
| |
| #define VIRTUAL_CSSID 0xfe |
| |
| typedef struct CIW { |
| uint8_t type; |
| uint8_t command; |
| uint16_t count; |
| } QEMU_PACKED CIW; |
| |
| typedef struct SenseId { |
| /* common part */ |
| uint8_t reserved; /* always 0x'FF' */ |
| uint16_t cu_type; /* control unit type */ |
| uint8_t cu_model; /* control unit model */ |
| uint16_t dev_type; /* device type */ |
| uint8_t dev_model; /* device model */ |
| uint8_t unused; /* padding byte */ |
| /* extended part */ |
| CIW ciw[MAX_CIWS]; /* variable # of CIWs */ |
| } QEMU_PACKED SenseId; |
| |
| /* Channel measurements, from linux/drivers/s390/cio/cmf.c. */ |
| typedef struct CMB { |
| uint16_t ssch_rsch_count; |
| uint16_t sample_count; |
| uint32_t device_connect_time; |
| uint32_t function_pending_time; |
| uint32_t device_disconnect_time; |
| uint32_t control_unit_queuing_time; |
| uint32_t device_active_only_time; |
| uint32_t reserved[2]; |
| } QEMU_PACKED CMB; |
| |
| typedef struct CMBE { |
| uint32_t ssch_rsch_count; |
| uint32_t sample_count; |
| uint32_t device_connect_time; |
| uint32_t function_pending_time; |
| uint32_t device_disconnect_time; |
| uint32_t control_unit_queuing_time; |
| uint32_t device_active_only_time; |
| uint32_t device_busy_time; |
| uint32_t initial_command_response_time; |
| uint32_t reserved[7]; |
| } QEMU_PACKED CMBE; |
| |
| typedef struct SubchDev SubchDev; |
| struct SubchDev { |
| /* channel-subsystem related things: */ |
| uint8_t cssid; |
| uint8_t ssid; |
| uint16_t schid; |
| uint16_t devno; |
| SCHIB curr_status; |
| uint8_t sense_data[32]; |
| hwaddr channel_prog; |
| CCW1 last_cmd; |
| bool last_cmd_valid; |
| bool ccw_fmt_1; |
| bool thinint_active; |
| uint8_t ccw_no_data_cnt; |
| /* transport-provided data: */ |
| int (*ccw_cb) (SubchDev *, CCW1); |
| void (*disable_cb)(SubchDev *); |
| SenseId id; |
| void *driver_data; |
| }; |
| |
| typedef struct IndAddr { |
| hwaddr addr; |
| uint64_t map; |
| unsigned long refcnt; |
| int len; |
| QTAILQ_ENTRY(IndAddr) sibling; |
| } IndAddr; |
| |
| IndAddr *get_indicator(hwaddr ind_addr, int len); |
| void release_indicator(AdapterInfo *adapter, IndAddr *indicator); |
| int map_indicator(AdapterInfo *adapter, IndAddr *indicator); |
| |
| typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid, |
| uint16_t schid); |
| void subch_device_save(SubchDev *s, QEMUFile *f); |
| int subch_device_load(SubchDev *s, QEMUFile *f); |
| int css_create_css_image(uint8_t cssid, bool default_image); |
| bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno); |
| void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid, |
| uint16_t devno, SubchDev *sch); |
| void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type); |
| uint16_t css_build_subchannel_id(SubchDev *sch); |
| void css_reset(void); |
| void css_reset_sch(SubchDev *sch); |
| void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid); |
| void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid, |
| int hotplugged, int add); |
| void css_generate_chp_crws(uint8_t cssid, uint8_t chpid); |
| void css_generate_css_crws(uint8_t cssid); |
| void css_clear_sei_pending(void); |
| void css_adapter_interrupt(uint8_t isc); |
| |
| #define CSS_IO_ADAPTER_VIRTIO 1 |
| int css_register_io_adapter(uint8_t type, uint8_t isc, bool swap, |
| bool maskable, uint32_t *id); |
| |
| #ifndef CONFIG_USER_ONLY |
| SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid, |
| uint16_t schid); |
| bool css_subch_visible(SubchDev *sch); |
| void css_conditional_io_interrupt(SubchDev *sch); |
| int css_do_stsch(SubchDev *sch, SCHIB *schib); |
| bool css_schid_final(int m, uint8_t cssid, uint8_t ssid, uint16_t schid); |
| int css_do_msch(SubchDev *sch, const SCHIB *schib); |
| int css_do_xsch(SubchDev *sch); |
| int css_do_csch(SubchDev *sch); |
| int css_do_hsch(SubchDev *sch); |
| int css_do_ssch(SubchDev *sch, ORB *orb); |
| int css_do_tsch_get_irb(SubchDev *sch, IRB *irb, int *irb_len); |
| void css_do_tsch_update_subch(SubchDev *sch); |
| int css_do_stcrw(CRW *crw); |
| void css_undo_stcrw(CRW *crw); |
| int css_do_tpi(IOIntCode *int_code, int lowcore); |
| int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid, uint8_t l_chpid, |
| int rfmt, void *buf); |
| void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo); |
| int css_enable_mcsse(void); |
| int css_enable_mss(void); |
| int css_do_rsch(SubchDev *sch); |
| int css_do_rchp(uint8_t cssid, uint8_t chpid); |
| bool css_present(uint8_t cssid); |
| #endif |
| /* |
| * Identify a device within the channel subsystem. |
| * Note that this can be used to identify either the subchannel or |
| * the attached I/O device, as there's always one I/O device per |
| * subchannel. |
| */ |
| typedef struct CssDevId { |
| uint8_t cssid; |
| uint8_t ssid; |
| uint16_t devid; |
| bool valid; |
| } CssDevId; |
| |
| extern PropertyInfo css_devid_propinfo; |
| |
| #define DEFINE_PROP_CSS_DEV_ID(_n, _s, _f) \ |
| DEFINE_PROP(_n, _s, _f, css_devid_propinfo, CssDevId) |
| |
| /** |
| * Create a subchannel for the given bus id. |
| * |
| * If @p bus_id is valid, verify that it uses the virtual channel |
| * subsystem id and is not already in use, and find a free subchannel |
| * id for it. If @p bus_id is not valid, find a free subchannel id and |
| * device number across all subchannel sets. If either of the former |
| * actions succeed, allocate a subchannel structure, initialise it |
| * with the bus id, subchannel id and device number, register it with |
| * the CSS and return it. Otherwise return NULL. |
| * |
| * The caller becomes owner of the returned subchannel structure and |
| * is responsible for unregistering and freeing it. |
| */ |
| SubchDev *css_create_virtual_sch(CssDevId bus_id, Error **errp); |
| #endif |