hw/clock: Only propagate clock changes if the clock is changed
[qemu.git] / include / hw / s390x / sclp.h
1 /*
2 * SCLP Support
3 *
4 * Copyright IBM, Corp. 2012
5 *
6 * Authors:
7 * Christian Borntraeger <borntraeger@de.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or (at your
10 * option) any later version. See the COPYING file in the top-level directory.
11 *
12 */
13
14 #ifndef HW_S390_SCLP_H
15 #define HW_S390_SCLP_H
16
17 #include "hw/sysbus.h"
18 #include "target/s390x/cpu-qom.h"
19
20 #define SCLP_CMD_CODE_MASK 0xffff00ff
21
22 /* SCLP command codes */
23 #define SCLP_CMDW_READ_SCP_INFO 0x00020001
24 #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
25 #define SCLP_READ_STORAGE_ELEMENT_INFO 0x00040001
26 #define SCLP_ATTACH_STORAGE_ELEMENT 0x00080001
27 #define SCLP_ASSIGN_STORAGE 0x000D0001
28 #define SCLP_UNASSIGN_STORAGE 0x000C0001
29 #define SCLP_CMD_READ_EVENT_DATA 0x00770005
30 #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005
31 #define SCLP_CMD_WRITE_EVENT_MASK 0x00780005
32
33 /* SCLP Memory hotplug codes */
34 #define SCLP_FC_ASSIGN_ATTACH_READ_STOR 0xE00000000000ULL
35 #define SCLP_STARTING_SUBINCREMENT_ID 0x10001
36 #define SCLP_INCREMENT_UNIT 0x10000
37 #define MAX_STORAGE_INCREMENTS 1020
38
39 /* CPU hotplug SCLP codes */
40 #define SCLP_HAS_CPU_INFO 0x0C00000000000000ULL
41 #define SCLP_CMDW_READ_CPU_INFO 0x00010001
42 #define SCLP_CMDW_CONFIGURE_CPU 0x00110001
43 #define SCLP_CMDW_DECONFIGURE_CPU 0x00100001
44
45 /* SCLP PCI codes */
46 #define SCLP_HAS_IOA_RECONFIG 0x0000000040000000ULL
47 #define SCLP_CMDW_CONFIGURE_IOA 0x001a0001
48 #define SCLP_CMDW_DECONFIGURE_IOA 0x001b0001
49 #define SCLP_RECONFIG_PCI_ATYPE 2
50
51 /* SCLP response codes */
52 #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010
53 #define SCLP_RC_NORMAL_COMPLETION 0x0020
54 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100
55 #define SCLP_RC_NO_ACTION_REQUIRED 0x0120
56 #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0
57 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340
58 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300
59 #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410
60 #define SCLP_RC_ADAPTER_IN_RESERVED_STATE 0x05f0
61 #define SCLP_RC_ADAPTER_TYPE_NOT_RECOGNIZED 0x06f0
62 #define SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED 0x09f0
63 #define SCLP_RC_INVALID_FUNCTION 0x40f0
64 #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0
65 #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0
66 #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0
67 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0
68 #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0
69
70
71 /* Service Call Control Block (SCCB) and its elements */
72
73 #define SCCB_SIZE 4096
74
75 #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80
76 #define SCLP_EVENT_BUFFER_ACCEPTED 0x80
77
78 #define SCLP_FC_NORMAL_WRITE 0
79
80 /*
81 * Normally packed structures are not the right thing to do, since all code
82 * must take care of endianness. We cannot use ldl_phys and friends for two
83 * reasons, though:
84 * - some of the embedded structures below the SCCB can appear multiple times
85 * at different locations, so there is no fixed offset
86 * - we work on a private copy of the SCCB, since there are several length
87 * fields, that would cause a security nightmare if we allow the guest to
88 * alter the structure while we parse it. We cannot use ldl_p and friends
89 * either without doing pointer arithmetics
90 * So we have to double check that all users of sclp data structures use the
91 * right endianness wrappers.
92 */
93 typedef struct SCCBHeader {
94 uint16_t length;
95 uint8_t function_code;
96 uint8_t control_mask[3];
97 uint16_t response_code;
98 } QEMU_PACKED SCCBHeader;
99
100 #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader))
101 #define SCCB_CPU_FEATURE_LEN 6
102
103 /* CPU information */
104 typedef struct CPUEntry {
105 uint8_t address;
106 uint8_t reserved0;
107 uint8_t features[SCCB_CPU_FEATURE_LEN];
108 uint8_t reserved2[6];
109 uint8_t type;
110 uint8_t reserved1;
111 } QEMU_PACKED CPUEntry;
112
113 typedef struct ReadInfo {
114 SCCBHeader h;
115 uint16_t rnmax;
116 uint8_t rnsize;
117 uint8_t _reserved1[16 - 11]; /* 11-15 */
118 uint16_t entries_cpu; /* 16-17 */
119 uint16_t offset_cpu; /* 18-19 */
120 uint8_t _reserved2[24 - 20]; /* 20-23 */
121 uint8_t loadparm[8]; /* 24-31 */
122 uint8_t _reserved3[48 - 32]; /* 32-47 */
123 uint64_t facilities; /* 48-55 */
124 uint8_t _reserved0[76 - 56]; /* 56-75 */
125 uint32_t ibc_val;
126 uint8_t conf_char[99 - 80]; /* 80-98 */
127 uint8_t mha_pow;
128 uint32_t rnsize2;
129 uint64_t rnmax2;
130 uint8_t _reserved6[116 - 112]; /* 112-115 */
131 uint8_t conf_char_ext[120 - 116]; /* 116-119 */
132 uint16_t highest_cpu;
133 uint8_t _reserved5[124 - 122]; /* 122-123 */
134 uint32_t hmfai;
135 struct CPUEntry entries[];
136 } QEMU_PACKED ReadInfo;
137
138 typedef struct ReadCpuInfo {
139 SCCBHeader h;
140 uint16_t nr_configured; /* 8-9 */
141 uint16_t offset_configured; /* 10-11 */
142 uint16_t nr_standby; /* 12-13 */
143 uint16_t offset_standby; /* 14-15 */
144 uint8_t reserved0[24-16]; /* 16-23 */
145 struct CPUEntry entries[];
146 } QEMU_PACKED ReadCpuInfo;
147
148 typedef struct ReadStorageElementInfo {
149 SCCBHeader h;
150 uint16_t max_id;
151 uint16_t assigned;
152 uint16_t standby;
153 uint8_t _reserved0[16 - 14]; /* 14-15 */
154 uint32_t entries[];
155 } QEMU_PACKED ReadStorageElementInfo;
156
157 typedef struct AttachStorageElement {
158 SCCBHeader h;
159 uint8_t _reserved0[10 - 8]; /* 8-9 */
160 uint16_t assigned;
161 uint8_t _reserved1[16 - 12]; /* 12-15 */
162 uint32_t entries[];
163 } QEMU_PACKED AttachStorageElement;
164
165 typedef struct AssignStorage {
166 SCCBHeader h;
167 uint16_t rn;
168 } QEMU_PACKED AssignStorage;
169
170 typedef struct IoaCfgSccb {
171 SCCBHeader header;
172 uint8_t atype;
173 uint8_t reserved1;
174 uint16_t reserved2;
175 uint32_t aid;
176 } QEMU_PACKED IoaCfgSccb;
177
178 typedef struct SCCB {
179 SCCBHeader h;
180 char data[SCCB_DATA_LEN];
181 } QEMU_PACKED SCCB;
182
183 #define TYPE_SCLP "sclp"
184 #define SCLP(obj) OBJECT_CHECK(SCLPDevice, (obj), TYPE_SCLP)
185 #define SCLP_CLASS(oc) OBJECT_CLASS_CHECK(SCLPDeviceClass, (oc), TYPE_SCLP)
186 #define SCLP_GET_CLASS(obj) OBJECT_GET_CLASS(SCLPDeviceClass, (obj), TYPE_SCLP)
187
188 typedef struct SCLPEventFacility SCLPEventFacility;
189
190 typedef struct SCLPDevice {
191 /* private */
192 DeviceState parent_obj;
193 SCLPEventFacility *event_facility;
194 int increment_size;
195
196 /* public */
197 } SCLPDevice;
198
199 typedef struct SCLPDeviceClass {
200 /* private */
201 DeviceClass parent_class;
202 void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb);
203 void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb);
204
205 /* public */
206 void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code);
207 void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb);
208 } SCLPDeviceClass;
209
210 static inline int sccb_data_len(SCCB *sccb)
211 {
212 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h);
213 }
214
215
216 void s390_sclp_init(void);
217 void sclp_service_interrupt(uint32_t sccb);
218 void raise_irq_cpu_hotplug(void);
219 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
220 int sclp_service_call_protected(CPUS390XState *env, uint64_t sccb,
221 uint32_t code);
222
223 #endif