diff options
Diffstat (limited to 'qemu/hw/s390x/css.h')
| -rw-r--r-- | qemu/hw/s390x/css.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/qemu/hw/s390x/css.h b/qemu/hw/s390x/css.h new file mode 100644 index 000000000..a09bb1f87 --- /dev/null +++ b/qemu/hw/s390x/css.h @@ -0,0 +1,111 @@ +/* + * 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 "ioinst.h" + +/* Channel subsystem constants. */ +#define MAX_SCHID 65535 +#define MAX_SSID 3 +#define MAX_CSSID 254 /* 255 is reserved */ +#define MAX_CHPID 255 + +#define MAX_CIWS 62 + +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; + +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 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_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); +#endif |