1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
* 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 "cpu.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 255
#define MAX_CHPID 255
#define MAX_ISC 7
#define MAX_CIWS 62
#define VIRTUAL_CSSID 0xfe
#define VIRTIO_CCW_CHPID 0 /* used by convention */
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;
uint16_t migrated_schid; /* used for missmatch detection */
ORB orb;
/* transport-provided data: */
int (*ccw_cb) (SubchDev *, CCW1);
void (*disable_cb)(SubchDev *);
int (*do_subchannel_work) (SubchDev *, ORB *);
SenseId id;
void *driver_data;
};
extern const VMStateDescription vmstate_subch_dev;
/*
* 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)
typedef struct IndAddr {
hwaddr addr;
uint64_t map;
unsigned long refcnt;
int32_t len;
QTAILQ_ENTRY(IndAddr) sibling;
} IndAddr;
extern const VMStateDescription vmstate_ind_addr;
#define VMSTATE_PTR_TO_IND_ADDR(_f, _s) \
VMSTATE_STRUCT(_f, _s, 1, vmstate_ind_addr, 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);
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);
int css_sch_build_schib(SubchDev *sch, CssDevId *dev_id);
unsigned int css_find_free_chpid(uint8_t cssid);
uint16_t css_build_subchannel_id(SubchDev *sch);
void copy_scsw_to_guest(SCSW *dest, const SCSW *src);
void css_inject_io_interrupt(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);
int s390_ccw_cmd_request(ORB *orb, SCSW *scsw, void *data);
int do_subchannel_work_virtual(SubchDev *sub, ORB *orb);
int do_subchannel_work_passthrough(SubchDev *sub, ORB *orb);
typedef enum {
CSS_IO_ADAPTER_VIRTIO = 0,
CSS_IO_ADAPTER_PCI = 1,
CSS_IO_ADAPTER_TYPE_NUMS,
} CssIoAdapterType;
void css_adapter_interrupt(CssIoAdapterType type, uint8_t isc);
int css_do_sic(CPUS390XState *env, uint8_t isc, uint16_t mode);
uint32_t css_get_adapter_id(CssIoAdapterType type, uint8_t isc);
void css_register_io_adapters(CssIoAdapterType type, bool swap, bool maskable,
uint8_t flags, Error **errp);
#ifndef CONFIG_KVM
#define S390_ADAPTER_SUPPRESSIBLE 0x01
#else
#define S390_ADAPTER_SUPPRESSIBLE KVM_S390_ADAPTER_SUPPRESSIBLE
#endif
#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
extern PropertyInfo css_devid_ro_propinfo;
#define DEFINE_PROP_CSS_DEV_ID_RO(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, css_devid_ro_propinfo, CssDevId)
/**
* Create a subchannel for the given bus id.
*
* If @p bus_id is valid, and @p squash_mcss is true, verify that it is
* not already in use in the default css, and find a free devno from the
* default css image for it.
* If @p bus_id is valid, and @p squash_mcss is false, verify that it is
* not already in use, and find a free devno for it.
* If @p bus_id is not valid, and if either @p squash_mcss or @p is_virtual
* is true, find a free subchannel id and device number across all
* subchannel sets from the default css image.
* If @p bus_id is not valid, and if both @p squash_mcss and @p is_virtual
* are false, find a non-full css image and find a free subchannel id and
* device number across all subchannel sets from it.
*
* 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_sch(CssDevId bus_id, bool is_virtual, bool squash_mcss,
Error **errp);
#endif
|
