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f6c98f92 HG |
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 | ||
a9c94277 | 17 | #include "hw/sysbus.h" |
53d8e91d | 18 | #include "target/s390x/cpu-qom.h" |
db1015e9 | 19 | #include "qom/object.h" |
f6c98f92 | 20 | |
5f04c14a JH |
21 | #define SCLP_CMD_CODE_MASK 0xffff00ff |
22 | ||
f6c98f92 HG |
23 | /* SCLP command codes */ |
24 | #define SCLP_CMDW_READ_SCP_INFO 0x00020001 | |
25 | #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 | |
234eef51 MR |
26 | #define SCLP_READ_STORAGE_ELEMENT_INFO 0x00040001 |
27 | #define SCLP_ATTACH_STORAGE_ELEMENT 0x00080001 | |
28 | #define SCLP_ASSIGN_STORAGE 0x000D0001 | |
29 | #define SCLP_UNASSIGN_STORAGE 0x000C0001 | |
559a17a1 HG |
30 | #define SCLP_CMD_READ_EVENT_DATA 0x00770005 |
31 | #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 | |
559a17a1 | 32 | #define SCLP_CMD_WRITE_EVENT_MASK 0x00780005 |
f6c98f92 | 33 | |
234eef51 MR |
34 | /* SCLP Memory hotplug codes */ |
35 | #define SCLP_FC_ASSIGN_ATTACH_READ_STOR 0xE00000000000ULL | |
36 | #define SCLP_STARTING_SUBINCREMENT_ID 0x10001 | |
37 | #define SCLP_INCREMENT_UNIT 0x10000 | |
0844df77 | 38 | #define MAX_STORAGE_INCREMENTS 1020 |
234eef51 | 39 | |
5f04c14a | 40 | /* CPU hotplug SCLP codes */ |
81f99382 | 41 | #define SCLP_HAS_CPU_INFO 0x0800000000000000ULL |
5f04c14a | 42 | #define SCLP_CMDW_READ_CPU_INFO 0x00010001 |
5f04c14a | 43 | |
8cba80c3 | 44 | /* SCLP PCI codes */ |
80b7a265 CH |
45 | #define SCLP_HAS_IOA_RECONFIG 0x0000000040000000ULL |
46 | #define SCLP_CMDW_CONFIGURE_IOA 0x001a0001 | |
47 | #define SCLP_CMDW_DECONFIGURE_IOA 0x001b0001 | |
48 | #define SCLP_RECONFIG_PCI_ATYPE 2 | |
8cba80c3 | 49 | |
f6c98f92 HG |
50 | /* SCLP response codes */ |
51 | #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 | |
559a17a1 | 52 | #define SCLP_RC_NORMAL_COMPLETION 0x0020 |
234eef51 | 53 | #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100 |
8cba80c3 | 54 | #define SCLP_RC_NO_ACTION_REQUIRED 0x0120 |
f6c98f92 | 55 | #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 |
559a17a1 HG |
56 | #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 |
57 | #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 | |
234eef51 | 58 | #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410 |
5d1abf23 | 59 | #define SCLP_RC_ADAPTER_IN_RESERVED_STATE 0x05f0 |
5838d657 | 60 | #define SCLP_RC_ADAPTER_TYPE_NOT_RECOGNIZED 0x06f0 |
8cba80c3 | 61 | #define SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED 0x09f0 |
559a17a1 HG |
62 | #define SCLP_RC_INVALID_FUNCTION 0x40f0 |
63 | #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 | |
64 | #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 | |
65 | #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 | |
66 | #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 | |
67 | #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 | |
68 | ||
f6c98f92 HG |
69 | |
70 | /* Service Call Control Block (SCCB) and its elements */ | |
71 | ||
72 | #define SCCB_SIZE 4096 | |
73 | ||
559a17a1 HG |
74 | #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 |
75 | #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 | |
76 | ||
77 | #define SCLP_FC_NORMAL_WRITE 0 | |
78 | ||
f6c98f92 HG |
79 | /* |
80 | * Normally packed structures are not the right thing to do, since all code | |
8367a14f | 81 | * must take care of endianness. We cannot use ldl_phys and friends for two |
f6c98f92 HG |
82 | * reasons, though: |
83 | * - some of the embedded structures below the SCCB can appear multiple times | |
84 | * at different locations, so there is no fixed offset | |
85 | * - we work on a private copy of the SCCB, since there are several length | |
86 | * fields, that would cause a security nightmare if we allow the guest to | |
87 | * alter the structure while we parse it. We cannot use ldl_p and friends | |
cced0d65 | 88 | * either without doing pointer arithmetic |
f6c98f92 | 89 | * So we have to double check that all users of sclp data structures use the |
8367a14f | 90 | * right endianness wrappers. |
f6c98f92 HG |
91 | */ |
92 | typedef struct SCCBHeader { | |
93 | uint16_t length; | |
94 | uint8_t function_code; | |
95 | uint8_t control_mask[3]; | |
96 | uint16_t response_code; | |
97 | } QEMU_PACKED SCCBHeader; | |
98 | ||
99 | #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) | |
1c07e01b | 100 | #define SCCB_CPU_FEATURE_LEN 6 |
f6c98f92 | 101 | |
8cc3aecf JH |
102 | /* CPU information */ |
103 | typedef struct CPUEntry { | |
104 | uint8_t address; | |
1c07e01b DH |
105 | uint8_t reserved0; |
106 | uint8_t features[SCCB_CPU_FEATURE_LEN]; | |
107 | uint8_t reserved2[6]; | |
8cc3aecf JH |
108 | uint8_t type; |
109 | uint8_t reserved1; | |
110 | } QEMU_PACKED CPUEntry; | |
111 | ||
1ecd6078 | 112 | #define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128 |
a67f05b3 | 113 | #define SCLP_READ_SCP_INFO_MNEST 4 |
f6c98f92 HG |
114 | typedef struct ReadInfo { |
115 | SCCBHeader h; | |
116 | uint16_t rnmax; | |
117 | uint8_t rnsize; | |
a67f05b3 PM |
118 | uint8_t _reserved1[15 - 11]; /* 11-14 */ |
119 | uint8_t stsi_parm; /* 15-15 */ | |
8cc3aecf JH |
120 | uint16_t entries_cpu; /* 16-17 */ |
121 | uint16_t offset_cpu; /* 18-19 */ | |
122 | uint8_t _reserved2[24 - 20]; /* 20-23 */ | |
123 | uint8_t loadparm[8]; /* 24-31 */ | |
124 | uint8_t _reserved3[48 - 32]; /* 32-47 */ | |
125 | uint64_t facilities; /* 48-55 */ | |
059be520 DH |
126 | uint8_t _reserved0[76 - 56]; /* 56-75 */ |
127 | uint32_t ibc_val; | |
6da5c593 | 128 | uint8_t conf_char[99 - 80]; /* 80-98 */ |
3fad3252 | 129 | uint8_t mha_pow; |
8cc3aecf JH |
130 | uint32_t rnsize2; |
131 | uint64_t rnmax2; | |
1c07e01b DH |
132 | uint8_t _reserved6[116 - 112]; /* 112-115 */ |
133 | uint8_t conf_char_ext[120 - 116]; /* 116-119 */ | |
8cc3aecf | 134 | uint16_t highest_cpu; |
a3669307 DH |
135 | uint8_t _reserved5[124 - 122]; /* 122-123 */ |
136 | uint32_t hmfai; | |
fabdada9 CW |
137 | uint8_t _reserved7[134 - 128]; /* 128-133 */ |
138 | uint8_t fac134; | |
139 | uint8_t _reserved8[144 - 135]; /* 135-143 */ | |
880a7817 | 140 | struct CPUEntry entries[]; |
fabdada9 CW |
141 | /* |
142 | * When the Extended-Length SCCB (ELS) feature is enabled the | |
143 | * start of the entries field begins at an offset denoted by the | |
144 | * offset_cpu field, otherwise it's at an offset of 128. | |
145 | */ | |
f6c98f92 HG |
146 | } QEMU_PACKED ReadInfo; |
147 | ||
8cc3aecf JH |
148 | typedef struct ReadCpuInfo { |
149 | SCCBHeader h; | |
150 | uint16_t nr_configured; /* 8-9 */ | |
151 | uint16_t offset_configured; /* 10-11 */ | |
152 | uint16_t nr_standby; /* 12-13 */ | |
153 | uint16_t offset_standby; /* 14-15 */ | |
154 | uint8_t reserved0[24-16]; /* 16-23 */ | |
880a7817 | 155 | struct CPUEntry entries[]; |
8cc3aecf JH |
156 | } QEMU_PACKED ReadCpuInfo; |
157 | ||
234eef51 MR |
158 | typedef struct ReadStorageElementInfo { |
159 | SCCBHeader h; | |
160 | uint16_t max_id; | |
161 | uint16_t assigned; | |
162 | uint16_t standby; | |
163 | uint8_t _reserved0[16 - 14]; /* 14-15 */ | |
880a7817 | 164 | uint32_t entries[]; |
234eef51 MR |
165 | } QEMU_PACKED ReadStorageElementInfo; |
166 | ||
167 | typedef struct AttachStorageElement { | |
168 | SCCBHeader h; | |
169 | uint8_t _reserved0[10 - 8]; /* 8-9 */ | |
170 | uint16_t assigned; | |
171 | uint8_t _reserved1[16 - 12]; /* 12-15 */ | |
880a7817 | 172 | uint32_t entries[]; |
234eef51 MR |
173 | } QEMU_PACKED AttachStorageElement; |
174 | ||
175 | typedef struct AssignStorage { | |
176 | SCCBHeader h; | |
177 | uint16_t rn; | |
178 | } QEMU_PACKED AssignStorage; | |
179 | ||
80b7a265 CH |
180 | typedef struct IoaCfgSccb { |
181 | SCCBHeader header; | |
182 | uint8_t atype; | |
183 | uint8_t reserved1; | |
184 | uint16_t reserved2; | |
185 | uint32_t aid; | |
186 | } QEMU_PACKED IoaCfgSccb; | |
187 | ||
f6c98f92 HG |
188 | typedef struct SCCB { |
189 | SCCBHeader h; | |
c1db53a5 | 190 | char data[]; |
f6c98f92 HG |
191 | } QEMU_PACKED SCCB; |
192 | ||
515190d9 | 193 | #define TYPE_SCLP "sclp" |
c821774a | 194 | OBJECT_DECLARE_TYPE(SCLPDevice, SCLPDeviceClass, |
30b5707c | 195 | SCLP) |
515190d9 | 196 | |
43f01440 | 197 | struct SCLPEventFacility; |
515190d9 | 198 | |
db1015e9 | 199 | struct SCLPDevice { |
515190d9 DH |
200 | /* private */ |
201 | DeviceState parent_obj; | |
43f01440 | 202 | struct SCLPEventFacility *event_facility; |
71a2fd35 | 203 | int increment_size; |
515190d9 DH |
204 | |
205 | /* public */ | |
db1015e9 | 206 | }; |
515190d9 | 207 | |
db1015e9 | 208 | struct SCLPDeviceClass { |
515190d9 DH |
209 | /* private */ |
210 | DeviceClass parent_class; | |
25a3c5af | 211 | void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb); |
25a3c5af | 212 | void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb); |
515190d9 DH |
213 | |
214 | /* public */ | |
25a3c5af | 215 | void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code); |
1723a1b6 | 216 | void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb); |
db1015e9 | 217 | }; |
515190d9 | 218 | |
559a17a1 HG |
219 | static inline int sccb_data_len(SCCB *sccb) |
220 | { | |
221 | return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); | |
222 | } | |
223 | ||
f6c98f92 | 224 | void sclp_service_interrupt(uint32_t sccb); |
49204458 | 225 | void raise_irq_cpu_hotplug(void); |
6d3910c9 PMD |
226 | int sclp_service_call(S390CPU *cpu, uint64_t sccb, uint32_t code); |
227 | int sclp_service_call_protected(S390CPU *cpu, uint64_t sccb, uint32_t code); | |
f6c98f92 HG |
228 | |
229 | #endif |