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 { |
94 | uint16_t ; |
95 | uint8_t ; |
96 | uint8_t [3]; |
97 | uint16_t ; |
98 | } QEMU_PACKED ; |
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[0]; |
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[0]; |
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[0]; |
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[0]; |
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 ; |
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 | |
221 | #endif |
222 | |