hw/s390x/s390-pci-bus.h

   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"
  24 #define TYPE_S390_PCI_BUS "s390-pcibus"
  25 #define TYPE_S390_PCI_DEVICE "zpci"
  26 #define TYPE_S390_PCI_IOMMU "s390-pci-iommu"
  27 #define TYPE_S390_IOMMU_MEMORY_REGION "s390-iommu-memory-region"
  28 #define FH_MASK_ENABLE   0x80000000
  29 #define FH_MASK_INSTANCE 0x7f000000
  30 #define FH_MASK_SHM      0x00ff0000
  31 #define FH_MASK_INDEX    0x0000ffff
  32 #define FH_SHM_VFIO      0x00010000
  33 #define FH_SHM_EMUL      0x00020000
  34 #define ZPCI_MAX_FID 0xffffffff
  35 #define ZPCI_MAX_UID 0xffff
  36 #define UID_UNDEFINED 0
  37 #define UID_CHECKING_ENABLED 0x01
  38
  39 #define S390_PCI_HOST_BRIDGE(obj) \
  40     OBJECT_CHECK(S390pciState, (obj), TYPE_S390_PCI_HOST_BRIDGE)
  41 #define S390_PCI_BUS(obj) \
  42     OBJECT_CHECK(S390PCIBus, (obj), TYPE_S390_PCI_BUS)
  43 #define S390_PCI_DEVICE(obj) \
  44     OBJECT_CHECK(S390PCIBusDevice, (obj), TYPE_S390_PCI_DEVICE)
  45 #define S390_PCI_IOMMU(obj) \
  46     OBJECT_CHECK(S390PCIIOMMU, (obj), TYPE_S390_PCI_IOMMU)
  47
  48 #define HP_EVENT_TO_CONFIGURED        0x0301
  49 #define HP_EVENT_RESERVED_TO_STANDBY  0x0302
  50 #define HP_EVENT_DECONFIGURE_REQUEST  0x0303
  51 #define HP_EVENT_CONFIGURED_TO_STBRES 0x0304
  52 #define HP_EVENT_STANDBY_TO_RESERVED  0x0308
  53
  54 #define ERR_EVENT_INVALAS 0x1
  55 #define ERR_EVENT_OORANGE 0x2
  56 #define ERR_EVENT_INVALTF 0x3
  57 #define ERR_EVENT_TPROTE  0x4
  58 #define ERR_EVENT_APROTE  0x5
  59 #define ERR_EVENT_KEYE    0x6
  60 #define ERR_EVENT_INVALTE 0x7
  61 #define ERR_EVENT_INVALTL 0x8
  62 #define ERR_EVENT_TT      0x9
  63 #define ERR_EVENT_INVALMS 0xa
  64 #define ERR_EVENT_SERR    0xb
  65 #define ERR_EVENT_NOMSI   0x10
  66 #define ERR_EVENT_INVALBV 0x11
  67 #define ERR_EVENT_AIBV    0x12
  68 #define ERR_EVENT_AIRERR  0x13
  69 #define ERR_EVENT_FMBA    0x2a
  70 #define ERR_EVENT_FMBUP   0x2b
  71 #define ERR_EVENT_FMBPRO  0x2c
  72 #define ERR_EVENT_CCONF   0x30
  73 #define ERR_EVENT_SERVAC  0x3a
  74 #define ERR_EVENT_PERMERR 0x3b
  75
  76 #define ERR_EVENT_Q_BIT 0x2
  77 #define ERR_EVENT_MVN_OFFSET 16
  78
  79 #define ZPCI_MSI_VEC_BITS 11
  80 #define ZPCI_MSI_VEC_MASK 0x7ff
  81
  82 #define ZPCI_MSI_ADDR  0xfe00000000000000ULL
  83 #define ZPCI_SDMA_ADDR 0x100000000ULL
  84 #define ZPCI_EDMA_ADDR 0x1ffffffffffffffULL
  85
  86 #define PAGE_SHIFT      12
  87 #define PAGE_SIZE       (1 << PAGE_SHIFT)
  88 #define PAGE_MASK       (~(PAGE_SIZE-1))
  89 #define PAGE_DEFAULT_ACC        0
  90 #define PAGE_DEFAULT_KEY        (PAGE_DEFAULT_ACC << 4)
  91
  92 /* I/O Translation Anchor (IOTA) */
  93 enum ZpciIoatDtype {
  94     ZPCI_IOTA_STO = 0,
  95     ZPCI_IOTA_RTTO = 1,
  96     ZPCI_IOTA_RSTO = 2,
  97     ZPCI_IOTA_RFTO = 3,
  98     ZPCI_IOTA_PFAA = 4,
  99     ZPCI_IOTA_IOPFAA = 5,
 100     ZPCI_IOTA_IOPTO = 7
 101 };
 102
 103 #define ZPCI_IOTA_IOT_ENABLED           0x800ULL
 104 #define ZPCI_IOTA_DT_ST                 (ZPCI_IOTA_STO  << 2)
 105 #define ZPCI_IOTA_DT_RT                 (ZPCI_IOTA_RTTO << 2)
 106 #define ZPCI_IOTA_DT_RS                 (ZPCI_IOTA_RSTO << 2)
 107 #define ZPCI_IOTA_DT_RF                 (ZPCI_IOTA_RFTO << 2)
 108 #define ZPCI_IOTA_DT_PF                 (ZPCI_IOTA_PFAA << 2)
 109 #define ZPCI_IOTA_FS_4K                 0
 110 #define ZPCI_IOTA_FS_1M                 1
 111 #define ZPCI_IOTA_FS_2G                 2
 112 #define ZPCI_KEY                        (PAGE_DEFAULT_KEY << 5)
 113
 114 #define ZPCI_IOTA_STO_FLAG  (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_ST)
 115 #define ZPCI_IOTA_RTTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RT)
 116 #define ZPCI_IOTA_RSTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RS)
 117 #define ZPCI_IOTA_RFTO_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY | ZPCI_IOTA_DT_RF)
 118 #define ZPCI_IOTA_RFAA_FLAG (ZPCI_IOTA_IOT_ENABLED | ZPCI_KEY |\
 119                              ZPCI_IOTA_DT_PF | ZPCI_IOTA_FS_2G)
 120
 121 /* I/O Region and segment tables */
 122 #define ZPCI_INDEX_MASK         0x7ffULL
 123
 124 #define ZPCI_TABLE_TYPE_MASK    0xc
 125 #define ZPCI_TABLE_TYPE_RFX     0xc
 126 #define ZPCI_TABLE_TYPE_RSX     0x8
 127 #define ZPCI_TABLE_TYPE_RTX     0x4
 128 #define ZPCI_TABLE_TYPE_SX      0x0
 129
 130 #define ZPCI_TABLE_LEN_RFX      0x3
 131 #define ZPCI_TABLE_LEN_RSX      0x3
 132 #define ZPCI_TABLE_LEN_RTX      0x3
 133
 134 #define ZPCI_TABLE_OFFSET_MASK  0xc0
 135 #define ZPCI_TABLE_SIZE         0x4000
 136 #define ZPCI_TABLE_ALIGN        ZPCI_TABLE_SIZE
 137 #define ZPCI_TABLE_ENTRY_SIZE   (sizeof(unsigned long))
 138 #define ZPCI_TABLE_ENTRIES      (ZPCI_TABLE_SIZE / ZPCI_TABLE_ENTRY_SIZE)
 139
 140 #define ZPCI_TABLE_BITS         11
 141 #define ZPCI_PT_BITS            8
 142 #define ZPCI_ST_SHIFT           (ZPCI_PT_BITS + PAGE_SHIFT)
 143 #define ZPCI_RT_SHIFT           (ZPCI_ST_SHIFT + ZPCI_TABLE_BITS)
 144
 145 #define ZPCI_RTE_FLAG_MASK      0x3fffULL
 146 #define ZPCI_RTE_ADDR_MASK      (~ZPCI_RTE_FLAG_MASK)
 147 #define ZPCI_STE_FLAG_MASK      0x7ffULL
 148 #define ZPCI_STE_ADDR_MASK      (~ZPCI_STE_FLAG_MASK)
 149
 150 #define ZPCI_SFAA_MASK          (~((1ULL << 20) - 1))
 151
 152 /* I/O Page tables */
 153 #define ZPCI_PTE_VALID_MASK             0x400
 154 #define ZPCI_PTE_INVALID                0x400
 155 #define ZPCI_PTE_VALID                  0x000
 156 #define ZPCI_PT_SIZE                    0x800
 157 #define ZPCI_PT_ALIGN                   ZPCI_PT_SIZE
 158 #define ZPCI_PT_ENTRIES                 (ZPCI_PT_SIZE / ZPCI_TABLE_ENTRY_SIZE)
 159 #define ZPCI_PT_MASK                    (ZPCI_PT_ENTRIES - 1)
 160
 161 #define ZPCI_PTE_FLAG_MASK              0xfffULL
 162 #define ZPCI_PTE_ADDR_MASK              (~ZPCI_PTE_FLAG_MASK)
 163
 164 /* Shared bits */
 165 #define ZPCI_TABLE_VALID                0x00
 166 #define ZPCI_TABLE_INVALID              0x20
 167 #define ZPCI_TABLE_PROTECTED            0x200
 168 #define ZPCI_TABLE_UNPROTECTED          0x000
 169 #define ZPCI_TABLE_FC                   0x400
 170
 171 #define ZPCI_TABLE_VALID_MASK           0x20
 172 #define ZPCI_TABLE_PROT_MASK            0x200
 173
 174 #define ZPCI_ETT_RT 1
 175 #define ZPCI_ETT_ST 0
 176 #define ZPCI_ETT_PT -1
 177
 178 /* PCI Function States
 179  *
 180  * reserved: default; device has just been plugged or is in progress of being
 181  *           unplugged
 182  * standby: device is present but not configured; transition from any
 183  *          configured state/to this state via sclp configure/deconfigure
 184  *
 185  * The following states make up the "configured" meta-state:
 186  * disabled: device is configured but not enabled; transition between this
 187  *           state and enabled via clp enable/disable
 188  * enbaled: device is ready for use; transition to disabled via clp disable;
 189  *          may enter an error state
 190  * blocked: ignore all DMA and interrupts; transition back to enabled or from
 191  *          error state via mpcifc
 192  * error: an error occurred; transition back to enabled via mpcifc
 193  * permanent error: an unrecoverable error occurred; transition to standby via
 194  *                  sclp deconfigure
 195  */
 196 typedef enum {
 197     ZPCI_FS_RESERVED,
 198     ZPCI_FS_STANDBY,
 199     ZPCI_FS_DISABLED,
 200     ZPCI_FS_ENABLED,
 201     ZPCI_FS_BLOCKED,
 202     ZPCI_FS_ERROR,
 203     ZPCI_FS_PERMANENT_ERROR,
 204 } ZpciState;
 205
 206 typedef struct SeiContainer {
 207     QTAILQ_ENTRY(SeiContainer) link;
 208     uint32_t fid;
 209     uint32_t fh;
 210     uint8_t cc;
 211     uint16_t pec;
 212     uint64_t faddr;
 213     uint32_t e;
 214 } SeiContainer;
 215
 216 typedef struct PciCcdfErr {
 217     uint32_t reserved1;
 218     uint32_t fh;
 219     uint32_t fid;
 220     uint32_t e;
 221     uint64_t faddr;
 222     uint32_t reserved3;
 223     uint16_t reserved4;
 224     uint16_t pec;
 225 } QEMU_PACKED PciCcdfErr;
 226
 227 typedef struct PciCcdfAvail {
 228     uint32_t reserved1;
 229     uint32_t fh;
 230     uint32_t fid;
 231     uint32_t reserved2;
 232     uint32_t reserved3;
 233     uint32_t reserved4;
 234     uint32_t reserved5;
 235     uint16_t reserved6;
 236     uint16_t pec;
 237 } QEMU_PACKED PciCcdfAvail;
 238
 239 typedef struct ChscSeiNt2Res {
 240     uint16_t length;
 241     uint16_t code;
 242     uint16_t reserved1;
 243     uint8_t reserved2;
 244     uint8_t nt;
 245     uint8_t flags;
 246     uint8_t reserved3;
 247     uint8_t reserved4;
 248     uint8_t cc;
 249     uint32_t reserved5[13];
 250     uint8_t ccdf[4016];
 251 } QEMU_PACKED ChscSeiNt2Res;
 252
 253 typedef struct S390MsixInfo {
 254     uint8_t table_bar;
 255     uint8_t pba_bar;
 256     uint16_t entries;
 257     uint32_t table_offset;
 258     uint32_t pba_offset;
 259 } S390MsixInfo;
 260
 261 typedef struct S390IOTLBEntry {
 262     uint64_t iova;
 263     uint64_t translated_addr;
 264     uint64_t len;
 265     uint64_t perm;
 266 } S390IOTLBEntry;
 267
 268 typedef struct S390PCIBusDevice S390PCIBusDevice;
 269 typedef struct S390PCIIOMMU {
 270     Object parent_obj;
 271     S390PCIBusDevice *pbdev;
 272     AddressSpace as;
 273     MemoryRegion mr;
 274     IOMMUMemoryRegion iommu_mr;
 275     bool enabled;
 276     uint64_t g_iota;
 277     uint64_t pba;
 278     uint64_t pal;
 279     GHashTable *iotlb;
 280 } S390PCIIOMMU;
 281
 282 typedef struct S390PCIIOMMUTable {
 283     uint64_t key;
 284     S390PCIIOMMU *iommu[PCI_SLOT_MAX];
 285 } S390PCIIOMMUTable;
 286
 287 /* Function Measurement Block */
 288 #define DEFAULT_MUI 4000
 289 #define UPDATE_U_BIT 0x1ULL
 290 #define FMBK_MASK 0xfULL
 291
 292 typedef struct ZpciFmbFmt0 {
 293     uint64_t dma_rbytes;
 294     uint64_t dma_wbytes;
 295 } ZpciFmbFmt0;
 296
 297 #define ZPCI_FMB_CNT_LD    0
 298 #define ZPCI_FMB_CNT_ST    1
 299 #define ZPCI_FMB_CNT_STB   2
 300 #define ZPCI_FMB_CNT_RPCIT 3
 301 #define ZPCI_FMB_CNT_MAX   4
 302
 303 #define ZPCI_FMB_FORMAT    0
 304
 305 typedef struct ZpciFmb {
 306     uint32_t format;
 307     uint32_t sample;
 308     uint64_t last_update;
 309     uint64_t counter[ZPCI_FMB_CNT_MAX];
 310     ZpciFmbFmt0 fmt0;
 311 } ZpciFmb;
 312 QEMU_BUILD_BUG_MSG(offsetof(ZpciFmb, fmt0) != 48, "padding in ZpciFmb");
 313
 314 struct S390PCIBusDevice {
 315     DeviceState qdev;
 316     PCIDevice *pdev;
 317     ZpciState state;
 318     char *target;
 319     uint16_t uid;
 320     uint32_t idx;
 321     uint32_t fh;
 322     uint32_t fid;
 323     bool fid_defined;
 324     uint64_t fmb_addr;
 325     ZpciFmb fmb;
 326     QEMUTimer *fmb_timer;
 327     uint8_t isc;
 328     uint16_t noi;
 329     uint16_t maxstbl;
 330     uint8_t sum;
 331     S390MsixInfo msix;
 332     AdapterRoutes routes;
 333     S390PCIIOMMU *iommu;
 334     MemoryRegion msix_notify_mr;
 335     IndAddr *summary_ind;
 336     IndAddr *indicator;
 337     bool pci_unplug_request_processed;
 338     bool unplug_requested;
 339     QTAILQ_ENTRY(S390PCIBusDevice) link;
 340 };
 341
 342 typedef struct S390PCIBus {
 343     BusState qbus;
 344 } S390PCIBus;
 345
 346 typedef struct S390pciState {
 347     PCIHostState parent_obj;
 348     uint32_t next_idx;
 349     int bus_no;
 350     S390PCIBus *bus;
 351     GHashTable *iommu_table;
 352     GHashTable *zpci_table;
 353     QTAILQ_HEAD(, SeiContainer) pending_sei;
 354     QTAILQ_HEAD(, S390PCIBusDevice) zpci_devs;
 355 } S390pciState;
 356
 357 S390pciState *s390_get_phb(void);
 358 int pci_chsc_sei_nt2_get_event(void *res);
 359 int pci_chsc_sei_nt2_have_event(void);
 360 void s390_pci_sclp_configure(SCCB *sccb);
 361 void s390_pci_sclp_deconfigure(SCCB *sccb);
 362 void s390_pci_iommu_enable(S390PCIIOMMU *iommu);
 363 void s390_pci_iommu_disable(S390PCIIOMMU *iommu);
 364 void s390_pci_generate_error_event(uint16_t pec, uint32_t fh, uint32_t fid,
 365                                    uint64_t faddr, uint32_t e);
 366 uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr,
 367                                   S390IOTLBEntry *entry);
 368 S390PCIBusDevice *s390_pci_find_dev_by_idx(S390pciState *s, uint32_t idx);
 369 S390PCIBusDevice *s390_pci_find_dev_by_fh(S390pciState *s, uint32_t fh);
 370 S390PCIBusDevice *s390_pci_find_dev_by_fid(S390pciState *s, uint32_t fid);
 371 S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s,
 372                                               const char *target);
 373 S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s,
 374                                                S390PCIBusDevice *pbdev);
 375
 376 #endif