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s390x/pci: enforce zPCI state checking
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1/*
2 * s390 PCI BUS definitions
3 *
4 * Copyright 2014 IBM Corp.
5 * Author(s): Frank Blaschka <frank.blaschka@de.ibm.com>
6 * Hong Bo Li <lihbbj@cn.ibm.com>
7 * Yi Min Zhao <zyimin@cn.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or (at
10 * your option) any later version. See the COPYING file in the top-level
11 * directory.
12 */
13
14#ifndef HW_S390_PCI_BUS_H
15#define HW_S390_PCI_BUS_H
16
17#include <hw/pci/pci.h>
18#include <hw/pci/pci_host.h>
19#include "hw/s390x/sclp.h"
20#include "hw/s390x/s390_flic.h"
21#include "hw/s390x/css.h"
22
23#define TYPE_S390_PCI_HOST_BRIDGE "s390-pcihost"
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24#define FH_MASK_ENABLE 0x80000000
25#define FH_MASK_INSTANCE 0x7f000000
26#define FH_MASK_SHM 0x00ff0000
27#define FH_MASK_INDEX 0x0000001f
28#define FH_SHM_VFIO 0x00010000
29#define FH_SHM_EMUL 0x00020000
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30#define S390_PCIPT_ADAPTER 2
31
32#define S390_PCI_HOST_BRIDGE(obj) \
33 OBJECT_CHECK(S390pciState, (obj), TYPE_S390_PCI_HOST_BRIDGE)
34
35#define HP_EVENT_TO_CONFIGURED 0x0301
36#define HP_EVENT_RESERVED_TO_STANDBY 0x0302
37#define HP_EVENT_CONFIGURED_TO_STBRES 0x0304
38#define HP_EVENT_STANDBY_TO_RESERVED 0x0308
39
40#define ERR_EVENT_INVALAS 0x1
41#define ERR_EVENT_OORANGE 0x2
42#define ERR_EVENT_INVALTF 0x3
43#define ERR_EVENT_TPROTE 0x4
44#define ERR_EVENT_APROTE 0x5
45#define ERR_EVENT_KEYE 0x6
46#define ERR_EVENT_INVALTE 0x7
47#define ERR_EVENT_INVALTL 0x8
48#define ERR_EVENT_TT 0x9
49#define ERR_EVENT_INVALMS 0xa
50#define ERR_EVENT_SERR 0xb
51#define ERR_EVENT_NOMSI 0x10
52#define ERR_EVENT_INVALBV 0x11
53#define ERR_EVENT_AIBV 0x12
54#define ERR_EVENT_AIRERR 0x13
55#define ERR_EVENT_FMBA 0x2a
56#define ERR_EVENT_FMBUP 0x2b
57#define ERR_EVENT_FMBPRO 0x2c
58#define ERR_EVENT_CCONF 0x30
59#define ERR_EVENT_SERVAC 0x3a
60#define ERR_EVENT_PERMERR 0x3b
61
62#define ERR_EVENT_Q_BIT 0x2
63#define ERR_EVENT_MVN_OFFSET 16
64
65#define ZPCI_MSI_VEC_BITS 11
66#define ZPCI_MSI_VEC_MASK 0x7ff
67
68#define ZPCI_MSI_ADDR 0xfe00000000000000ULL
69#define ZPCI_SDMA_ADDR 0x100000000ULL
70#define ZPCI_EDMA_ADDR 0x1ffffffffffffffULL
71
72#define PAGE_SHIFT 12
73#define PAGE_MASK (~(PAGE_SIZE-1))
74#define PAGE_DEFAULT_ACC 0
75#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
76
77/* I/O Translation Anchor (IOTA) */
78enum ZpciIoatDtype {
79 ZPCI_IOTA_STO = 0,
80 ZPCI_IOTA_RTTO = 1,
81 ZPCI_IOTA_RSTO = 2,
82 ZPCI_IOTA_RFTO = 3,
83 ZPCI_IOTA_PFAA = 4,
84 ZPCI_IOTA_IOPFAA = 5,
85 ZPCI_IOTA_IOPTO = 7
86};
87
88#define ZPCI_IOTA_IOT_ENABLED 0x800ULL
89#define ZPCI_IOTA_DT_ST (ZPCI_IOTA_STO << 2)
90#define ZPCI_IOTA_DT_RT (ZPCI_IOTA_RTTO << 2)
91#define ZPCI_IOTA_DT_RS (ZPCI_IOTA_RSTO << 2)
92#define ZPCI_IOTA_DT_RF (ZPCI_IOTA_RFTO << 2)
93#define ZPCI_IOTA_DT_PF (ZPCI_IOTA_PFAA << 2)
94#define ZPCI_IOTA_FS_4K 0
95#define ZPCI_IOTA_FS_1M 1
96#define ZPCI_IOTA_FS_2G 2
97#define ZPCI_KEY (PAGE_DEFAULT_KEY << 5)
98
99#define ZPCI_IOTA_STO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_ST)
100#define ZPCI_IOTA_RTTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RT)
101#define ZPCI_IOTA_RSTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RS)
102#define ZPCI_IOTA_RFTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RF)
103#define ZPCI_IOTA_RFAA_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY |\
104 ZPCI_IOTA_DT_PF | ZPCI_IOTA_FS_2G)
105
106/* I/O Region and segment tables */
107#define ZPCI_INDEX_MASK 0x7ffULL
108
109#define ZPCI_TABLE_TYPE_MASK 0xc
110#define ZPCI_TABLE_TYPE_RFX 0xc
111#define ZPCI_TABLE_TYPE_RSX 0x8
112#define ZPCI_TABLE_TYPE_RTX 0x4
113#define ZPCI_TABLE_TYPE_SX 0x0
114
115#define ZPCI_TABLE_LEN_RFX 0x3
116#define ZPCI_TABLE_LEN_RSX 0x3
117#define ZPCI_TABLE_LEN_RTX 0x3
118
119#define ZPCI_TABLE_OFFSET_MASK 0xc0
120#define ZPCI_TABLE_SIZE 0x4000
121#define ZPCI_TABLE_ALIGN ZPCI_TABLE_SIZE
122#define ZPCI_TABLE_ENTRY_SIZE (sizeof(unsigned long))
123#define ZPCI_TABLE_ENTRIES (ZPCI_TABLE_SIZE / ZPCI_TABLE_ENTRY_SIZE)
124
125#define ZPCI_TABLE_BITS 11
126#define ZPCI_PT_BITS 8
127#define ZPCI_ST_SHIFT (ZPCI_PT_BITS + PAGE_SHIFT)
128#define ZPCI_RT_SHIFT (ZPCI_ST_SHIFT + ZPCI_TABLE_BITS)
129
130#define ZPCI_RTE_FLAG_MASK 0x3fffULL
131#define ZPCI_RTE_ADDR_MASK (~ZPCI_RTE_FLAG_MASK)
132#define ZPCI_STE_FLAG_MASK 0x7ffULL
133#define ZPCI_STE_ADDR_MASK (~ZPCI_STE_FLAG_MASK)
134
135/* I/O Page tables */
136#define ZPCI_PTE_VALID_MASK 0x400
137#define ZPCI_PTE_INVALID 0x400
138#define ZPCI_PTE_VALID 0x000
139#define ZPCI_PT_SIZE 0x800
140#define ZPCI_PT_ALIGN ZPCI_PT_SIZE
141#define ZPCI_PT_ENTRIES (ZPCI_PT_SIZE / ZPCI_TABLE_ENTRY_SIZE)
142#define ZPCI_PT_MASK (ZPCI_PT_ENTRIES - 1)
143
144#define ZPCI_PTE_FLAG_MASK 0xfffULL
145#define ZPCI_PTE_ADDR_MASK (~ZPCI_PTE_FLAG_MASK)
146
147/* Shared bits */
148#define ZPCI_TABLE_VALID 0x00
149#define ZPCI_TABLE_INVALID 0x20
150#define ZPCI_TABLE_PROTECTED 0x200
151#define ZPCI_TABLE_UNPROTECTED 0x000
152
153#define ZPCI_TABLE_VALID_MASK 0x20
154#define ZPCI_TABLE_PROT_MASK 0x200
155
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156/* PCI Function States
157 *
158 * reserved: default; device has just been plugged or is in progress of being
159 * unplugged
160 * standby: device is present but not configured; transition from any
161 * configured state/to this state via sclp configure/deconfigure
162 *
163 * The following states make up the "configured" meta-state:
164 * disabled: device is configured but not enabled; transition between this
165 * state and enabled via clp enable/disable
166 * enbaled: device is ready for use; transition to disabled via clp disable;
167 * may enter an error state
168 * blocked: ignore all DMA and interrupts; transition back to enabled or from
169 * error state via mpcifc
170 * error: an error occured; transition back to enabled via mpcifc
171 * permanent error: an unrecoverable error occured; transition to standby via
172 * sclp deconfigure
173 */
174typedef enum {
175 ZPCI_FS_RESERVED,
176 ZPCI_FS_STANDBY,
177 ZPCI_FS_DISABLED,
178 ZPCI_FS_ENABLED,
179 ZPCI_FS_BLOCKED,
180 ZPCI_FS_ERROR,
181 ZPCI_FS_PERMANENT_ERROR,
182} ZpciState;
183
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184typedef struct SeiContainer {
185 QTAILQ_ENTRY(SeiContainer) link;
186 uint32_t fid;
187 uint32_t fh;
188 uint8_t cc;
189 uint16_t pec;
190 uint64_t faddr;
191 uint32_t e;
192} SeiContainer;
193
194typedef struct PciCcdfErr {
195 uint32_t reserved1;
196 uint32_t fh;
197 uint32_t fid;
198 uint32_t e;
199 uint64_t faddr;
200 uint32_t reserved3;
201 uint16_t reserved4;
202 uint16_t pec;
203} QEMU_PACKED PciCcdfErr;
204
205typedef struct PciCcdfAvail {
206 uint32_t reserved1;
207 uint32_t fh;
208 uint32_t fid;
209 uint32_t reserved2;
210 uint32_t reserved3;
211 uint32_t reserved4;
212 uint32_t reserved5;
213 uint16_t reserved6;
214 uint16_t pec;
215} QEMU_PACKED PciCcdfAvail;
216
217typedef struct ChscSeiNt2Res {
218 uint16_t length;
219 uint16_t code;
220 uint16_t reserved1;
221 uint8_t reserved2;
222 uint8_t nt;
223 uint8_t flags;
224 uint8_t reserved3;
225 uint8_t reserved4;
226 uint8_t cc;
227 uint32_t reserved5[13];
228 uint8_t ccdf[4016];
229} QEMU_PACKED ChscSeiNt2Res;
230
231typedef struct PciCfgSccb {
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232 SCCBHeader header;
233 uint8_t atype;
234 uint8_t reserved1;
235 uint16_t reserved2;
236 uint32_t aid;
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237} QEMU_PACKED PciCfgSccb;
238
239typedef struct S390MsixInfo {
240 bool available;
241 uint8_t table_bar;
242 uint8_t pba_bar;
243 uint16_t entries;
244 uint32_t table_offset;
245 uint32_t pba_offset;
246} S390MsixInfo;
247
248typedef struct S390PCIBusDevice {
249 PCIDevice *pdev;
5d1abf23 250 ZpciState state;
df6a050c 251 bool iommu_enabled;
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252 uint32_t fh;
253 uint32_t fid;
254 uint64_t g_iota;
255 uint64_t pba;
256 uint64_t pal;
257 uint64_t fmb_addr;
258 uint8_t isc;
259 uint16_t noi;
260 uint8_t sum;
261 S390MsixInfo msix;
262 AdapterRoutes routes;
263 AddressSpace as;
264 MemoryRegion mr;
f0a399db 265 MemoryRegion iommu_mr;
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266 IndAddr *summary_ind;
267 IndAddr *indicator;
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268} S390PCIBusDevice;
269
270typedef struct S390pciState {
271 PCIHostState parent_obj;
272 S390PCIBusDevice pbdev[PCI_SLOT_MAX];
273 AddressSpace msix_notify_as;
274 MemoryRegion msix_notify_mr;
275 QTAILQ_HEAD(, SeiContainer) pending_sei;
276} S390pciState;
277
278int chsc_sei_nt2_get_event(void *res);
279int chsc_sei_nt2_have_event(void);
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280void s390_pci_sclp_configure(SCCB *sccb);
281void s390_pci_sclp_deconfigure(SCCB *sccb);
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282void s390_pci_iommu_enable(S390PCIBusDevice *pbdev);
283void s390_pci_iommu_disable(S390PCIBusDevice *pbdev);
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284void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid,
285 uint64_t faddr, uint32_t e);
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286S390PCIBusDevice *s390_pci_find_dev_by_idx(uint32_t idx);
287S390PCIBusDevice *s390_pci_find_dev_by_fh(uint32_t fh);
288S390PCIBusDevice *s390_pci_find_dev_by_fid(uint32_t fid);
289
290#endif