| /* |
| * 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 thinint_active; |
| /* transport-provided data: */ |
| int (*ccw_cb) (SubchDev *, CCW1); |
| SenseId id; |
| void *driver_data; |
| }; |
| |
| typedef SubchDev *(*css_subch_cb_func)(uint8_t m, uint8_t cssid, uint8_t ssid, |
| uint16_t schid); |
| 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_adapter_interrupt(uint8_t isc); |
| #endif |