2 * Channel subsystem structures and definitions.
4 * Copyright 2012 IBM Corp.
5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
8 * your option) any later version. See the COPYING file in the top-level
15 #include "hw/s390x/adapter.h"
16 #include "hw/s390x/s390_flic.h"
17 #include "hw/s390x/ioinst.h"
19 /* Channel subsystem constants. */
20 #define MAX_SCHID 65535
22 #define MAX_CSSID 254 /* 255 is reserved */
33 typedef struct SenseId
{
35 uint8_t reserved
; /* always 0x'FF' */
36 uint16_t cu_type
; /* control unit type */
37 uint8_t cu_model
; /* control unit model */
38 uint16_t dev_type
; /* device type */
39 uint8_t dev_model
; /* device model */
40 uint8_t unused
; /* padding byte */
42 CIW ciw
[MAX_CIWS
]; /* variable # of CIWs */
43 } QEMU_PACKED SenseId
;
45 /* Channel measurements, from linux/drivers/s390/cio/cmf.c. */
47 uint16_t ssch_rsch_count
;
48 uint16_t sample_count
;
49 uint32_t device_connect_time
;
50 uint32_t function_pending_time
;
51 uint32_t device_disconnect_time
;
52 uint32_t control_unit_queuing_time
;
53 uint32_t device_active_only_time
;
58 uint32_t ssch_rsch_count
;
59 uint32_t sample_count
;
60 uint32_t device_connect_time
;
61 uint32_t function_pending_time
;
62 uint32_t device_disconnect_time
;
63 uint32_t control_unit_queuing_time
;
64 uint32_t device_active_only_time
;
65 uint32_t device_busy_time
;
66 uint32_t initial_command_response_time
;
70 typedef struct SubchDev SubchDev
;
72 /* channel-subsystem related things: */
78 uint8_t sense_data
[32];
84 uint8_t ccw_no_data_cnt
;
85 /* transport-provided data: */
86 int (*ccw_cb
) (SubchDev
*, CCW1
);
87 void (*disable_cb
)(SubchDev
*);
92 typedef struct IndAddr
{
97 QTAILQ_ENTRY(IndAddr
) sibling
;
100 IndAddr
*get_indicator(hwaddr ind_addr
, int len
);
101 void release_indicator(AdapterInfo
*adapter
, IndAddr
*indicator
);
102 int map_indicator(AdapterInfo
*adapter
, IndAddr
*indicator
);
104 typedef SubchDev
*(*css_subch_cb_func
)(uint8_t m
, uint8_t cssid
, uint8_t ssid
,
106 void subch_device_save(SubchDev
*s
, QEMUFile
*f
);
107 int subch_device_load(SubchDev
*s
, QEMUFile
*f
);
108 int css_create_css_image(uint8_t cssid
, bool default_image
);
109 bool css_devno_used(uint8_t cssid
, uint8_t ssid
, uint16_t devno
);
110 void css_subch_assign(uint8_t cssid
, uint8_t ssid
, uint16_t schid
,
111 uint16_t devno
, SubchDev
*sch
);
112 void css_sch_build_virtual_schib(SubchDev
*sch
, uint8_t chpid
, uint8_t type
);
113 uint16_t css_build_subchannel_id(SubchDev
*sch
);
114 void css_reset(void);
115 void css_reset_sch(SubchDev
*sch
);
116 void css_queue_crw(uint8_t rsc
, uint8_t erc
, int chain
, uint16_t rsid
);
117 void css_generate_sch_crws(uint8_t cssid
, uint8_t ssid
, uint16_t schid
,
118 int hotplugged
, int add
);
119 void css_generate_chp_crws(uint8_t cssid
, uint8_t chpid
);
120 void css_generate_css_crws(uint8_t cssid
);
121 void css_clear_sei_pending(void);
122 void css_adapter_interrupt(uint8_t isc
);
124 #define CSS_IO_ADAPTER_VIRTIO 1
125 int css_register_io_adapter(uint8_t type
, uint8_t isc
, bool swap
,
126 bool maskable
, uint32_t *id
);
128 #ifndef CONFIG_USER_ONLY
129 SubchDev
*css_find_subch(uint8_t m
, uint8_t cssid
, uint8_t ssid
,
131 bool css_subch_visible(SubchDev
*sch
);
132 void css_conditional_io_interrupt(SubchDev
*sch
);
133 int css_do_stsch(SubchDev
*sch
, SCHIB
*schib
);
134 bool css_schid_final(int m
, uint8_t cssid
, uint8_t ssid
, uint16_t schid
);
135 int css_do_msch(SubchDev
*sch
, const SCHIB
*schib
);
136 int css_do_xsch(SubchDev
*sch
);
137 int css_do_csch(SubchDev
*sch
);
138 int css_do_hsch(SubchDev
*sch
);
139 int css_do_ssch(SubchDev
*sch
, ORB
*orb
);
140 int css_do_tsch_get_irb(SubchDev
*sch
, IRB
*irb
, int *irb_len
);
141 void css_do_tsch_update_subch(SubchDev
*sch
);
142 int css_do_stcrw(CRW
*crw
);
143 void css_undo_stcrw(CRW
*crw
);
144 int css_do_tpi(IOIntCode
*int_code
, int lowcore
);
145 int css_collect_chp_desc(int m
, uint8_t cssid
, uint8_t f_chpid
, uint8_t l_chpid
,
146 int rfmt
, void *buf
);
147 void css_do_schm(uint8_t mbk
, int update
, int dct
, uint64_t mbo
);
148 int css_enable_mcsse(void);
149 int css_enable_mss(void);
150 int css_do_rsch(SubchDev
*sch
);
151 int css_do_rchp(uint8_t cssid
, uint8_t chpid
);
152 bool css_present(uint8_t cssid
);