qemu/hw/usb/hcd-ehci.h
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   1/*
   2 * QEMU USB EHCI Emulation
   3 *
   4 * This library is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU Lesser General Public
   6 * License as published by the Free Software Foundation; either
   7 * version 2.1 of the License, or (at your option) any later version.
   8 *
   9 * This library is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 * Lesser General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU Lesser General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#ifndef HW_USB_HCD_EHCI_H
  19#define HW_USB_HCD_EHCI_H
  20
  21#include "qemu/timer.h"
  22#include "hw/usb.h"
  23#include "sysemu/dma.h"
  24#include "hw/pci/pci_device.h"
  25#include "hw/sysbus.h"
  26
  27#ifndef EHCI_DEBUG
  28#define EHCI_DEBUG   0
  29#endif
  30
  31#if EHCI_DEBUG
  32#define DPRINTF printf
  33#else
  34#define DPRINTF(...)
  35#endif
  36
  37#define MMIO_SIZE        0x1000
  38#define CAPA_SIZE        0x10
  39
  40#define NB_PORTS         6        /* Max. Number of downstream ports */
  41
  42typedef struct EHCIPacket EHCIPacket;
  43typedef struct EHCIQueue EHCIQueue;
  44typedef struct EHCIState EHCIState;
  45
  46/*  EHCI spec version 1.0 Section 3.3
  47 */
  48typedef struct EHCIitd {
  49    uint32_t next;
  50
  51    uint32_t transact[8];
  52#define ITD_XACT_ACTIVE          (1 << 31)
  53#define ITD_XACT_DBERROR         (1 << 30)
  54#define ITD_XACT_BABBLE          (1 << 29)
  55#define ITD_XACT_XACTERR         (1 << 28)
  56#define ITD_XACT_LENGTH_MASK     0x0fff0000
  57#define ITD_XACT_LENGTH_SH       16
  58#define ITD_XACT_IOC             (1 << 15)
  59#define ITD_XACT_PGSEL_MASK      0x00007000
  60#define ITD_XACT_PGSEL_SH        12
  61#define ITD_XACT_OFFSET_MASK     0x00000fff
  62
  63    uint32_t bufptr[7];
  64#define ITD_BUFPTR_MASK          0xfffff000
  65#define ITD_BUFPTR_SH            12
  66#define ITD_BUFPTR_EP_MASK       0x00000f00
  67#define ITD_BUFPTR_EP_SH         8
  68#define ITD_BUFPTR_DEVADDR_MASK  0x0000007f
  69#define ITD_BUFPTR_DEVADDR_SH    0
  70#define ITD_BUFPTR_DIRECTION     (1 << 11)
  71#define ITD_BUFPTR_MAXPKT_MASK   0x000007ff
  72#define ITD_BUFPTR_MAXPKT_SH     0
  73#define ITD_BUFPTR_MULT_MASK     0x00000003
  74#define ITD_BUFPTR_MULT_SH       0
  75} EHCIitd;
  76
  77/*  EHCI spec version 1.0 Section 3.4
  78 */
  79typedef struct EHCIsitd {
  80    uint32_t next;                  /* Standard next link pointer */
  81    uint32_t epchar;
  82#define SITD_EPCHAR_IO              (1 << 31)
  83#define SITD_EPCHAR_PORTNUM_MASK    0x7f000000
  84#define SITD_EPCHAR_PORTNUM_SH      24
  85#define SITD_EPCHAR_HUBADD_MASK     0x007f0000
  86#define SITD_EPCHAR_HUBADDR_SH      16
  87#define SITD_EPCHAR_EPNUM_MASK      0x00000f00
  88#define SITD_EPCHAR_EPNUM_SH        8
  89#define SITD_EPCHAR_DEVADDR_MASK    0x0000007f
  90
  91    uint32_t uframe;
  92#define SITD_UFRAME_CMASK_MASK      0x0000ff00
  93#define SITD_UFRAME_CMASK_SH        8
  94#define SITD_UFRAME_SMASK_MASK      0x000000ff
  95
  96    uint32_t results;
  97#define SITD_RESULTS_IOC              (1 << 31)
  98#define SITD_RESULTS_PGSEL            (1 << 30)
  99#define SITD_RESULTS_TBYTES_MASK      0x03ff0000
 100#define SITD_RESULTS_TYBYTES_SH       16
 101#define SITD_RESULTS_CPROGMASK_MASK   0x0000ff00
 102#define SITD_RESULTS_CPROGMASK_SH     8
 103#define SITD_RESULTS_ACTIVE           (1 << 7)
 104#define SITD_RESULTS_ERR              (1 << 6)
 105#define SITD_RESULTS_DBERR            (1 << 5)
 106#define SITD_RESULTS_BABBLE           (1 << 4)
 107#define SITD_RESULTS_XACTERR          (1 << 3)
 108#define SITD_RESULTS_MISSEDUF         (1 << 2)
 109#define SITD_RESULTS_SPLITXSTATE      (1 << 1)
 110
 111    uint32_t bufptr[2];
 112#define SITD_BUFPTR_MASK              0xfffff000
 113#define SITD_BUFPTR_CURROFF_MASK      0x00000fff
 114#define SITD_BUFPTR_TPOS_MASK         0x00000018
 115#define SITD_BUFPTR_TPOS_SH           3
 116#define SITD_BUFPTR_TCNT_MASK         0x00000007
 117
 118    uint32_t backptr;                 /* Standard next link pointer */
 119} EHCIsitd;
 120
 121/*  EHCI spec version 1.0 Section 3.5
 122 */
 123typedef struct EHCIqtd {
 124    uint32_t next;                    /* Standard next link pointer */
 125    uint32_t altnext;                 /* Standard next link pointer */
 126    uint32_t token;
 127#define QTD_TOKEN_DTOGGLE             (1 << 31)
 128#define QTD_TOKEN_TBYTES_MASK         0x7fff0000
 129#define QTD_TOKEN_TBYTES_SH           16
 130#define QTD_TOKEN_IOC                 (1 << 15)
 131#define QTD_TOKEN_CPAGE_MASK          0x00007000
 132#define QTD_TOKEN_CPAGE_SH            12
 133#define QTD_TOKEN_CERR_MASK           0x00000c00
 134#define QTD_TOKEN_CERR_SH             10
 135#define QTD_TOKEN_PID_MASK            0x00000300
 136#define QTD_TOKEN_PID_SH              8
 137#define QTD_TOKEN_ACTIVE              (1 << 7)
 138#define QTD_TOKEN_HALT                (1 << 6)
 139#define QTD_TOKEN_DBERR               (1 << 5)
 140#define QTD_TOKEN_BABBLE              (1 << 4)
 141#define QTD_TOKEN_XACTERR             (1 << 3)
 142#define QTD_TOKEN_MISSEDUF            (1 << 2)
 143#define QTD_TOKEN_SPLITXSTATE         (1 << 1)
 144#define QTD_TOKEN_PING                (1 << 0)
 145
 146    uint32_t bufptr[5];               /* Standard buffer pointer */
 147#define QTD_BUFPTR_MASK               0xfffff000
 148#define QTD_BUFPTR_SH                 12
 149} EHCIqtd;
 150
 151/*  EHCI spec version 1.0 Section 3.6
 152 */
 153typedef struct EHCIqh {
 154    uint32_t next;                    /* Standard next link pointer */
 155
 156    /* endpoint characteristics */
 157    uint32_t epchar;
 158#define QH_EPCHAR_RL_MASK             0xf0000000
 159#define QH_EPCHAR_RL_SH               28
 160#define QH_EPCHAR_C                   (1 << 27)
 161#define QH_EPCHAR_MPLEN_MASK          0x07FF0000
 162#define QH_EPCHAR_MPLEN_SH            16
 163#define QH_EPCHAR_H                   (1 << 15)
 164#define QH_EPCHAR_DTC                 (1 << 14)
 165#define QH_EPCHAR_EPS_MASK            0x00003000
 166#define QH_EPCHAR_EPS_SH              12
 167#define EHCI_QH_EPS_FULL              0
 168#define EHCI_QH_EPS_LOW               1
 169#define EHCI_QH_EPS_HIGH              2
 170#define EHCI_QH_EPS_RESERVED          3
 171
 172#define QH_EPCHAR_EP_MASK             0x00000f00
 173#define QH_EPCHAR_EP_SH               8
 174#define QH_EPCHAR_I                   (1 << 7)
 175#define QH_EPCHAR_DEVADDR_MASK        0x0000007f
 176#define QH_EPCHAR_DEVADDR_SH          0
 177
 178    /* endpoint capabilities */
 179    uint32_t epcap;
 180#define QH_EPCAP_MULT_MASK            0xc0000000
 181#define QH_EPCAP_MULT_SH              30
 182#define QH_EPCAP_PORTNUM_MASK         0x3f800000
 183#define QH_EPCAP_PORTNUM_SH           23
 184#define QH_EPCAP_HUBADDR_MASK         0x007f0000
 185#define QH_EPCAP_HUBADDR_SH           16
 186#define QH_EPCAP_CMASK_MASK           0x0000ff00
 187#define QH_EPCAP_CMASK_SH             8
 188#define QH_EPCAP_SMASK_MASK           0x000000ff
 189#define QH_EPCAP_SMASK_SH             0
 190
 191    uint32_t current_qtd;             /* Standard next link pointer */
 192    uint32_t next_qtd;                /* Standard next link pointer */
 193    uint32_t altnext_qtd;
 194#define QH_ALTNEXT_NAKCNT_MASK        0x0000001e
 195#define QH_ALTNEXT_NAKCNT_SH          1
 196
 197    uint32_t token;                   /* Same as QTD token */
 198    uint32_t bufptr[5];               /* Standard buffer pointer */
 199#define BUFPTR_CPROGMASK_MASK         0x000000ff
 200#define BUFPTR_FRAMETAG_MASK          0x0000001f
 201#define BUFPTR_SBYTES_MASK            0x00000fe0
 202#define BUFPTR_SBYTES_SH              5
 203} EHCIqh;
 204
 205/*  EHCI spec version 1.0 Section 3.7
 206 */
 207typedef struct EHCIfstn {
 208    uint32_t next;                    /* Standard next link pointer */
 209    uint32_t backptr;                 /* Standard next link pointer */
 210} EHCIfstn;
 211
 212enum async_state {
 213    EHCI_ASYNC_NONE = 0,
 214    EHCI_ASYNC_INITIALIZED,
 215    EHCI_ASYNC_INFLIGHT,
 216    EHCI_ASYNC_FINISHED,
 217};
 218
 219struct EHCIPacket {
 220    EHCIQueue *queue;
 221    QTAILQ_ENTRY(EHCIPacket) next;
 222
 223    EHCIqtd qtd;           /* copy of current QTD (being worked on) */
 224    uint32_t qtdaddr;      /* address QTD read from                 */
 225
 226    USBPacket packet;
 227    QEMUSGList sgl;
 228    int pid;
 229    enum async_state async;
 230};
 231
 232struct EHCIQueue {
 233    EHCIState *ehci;
 234    QTAILQ_ENTRY(EHCIQueue) next;
 235    uint32_t seen;
 236    uint64_t ts;
 237    int async;
 238    int transact_ctr;
 239
 240    /* cached data from guest - needs to be flushed
 241     * when guest removes an entry (doorbell, handshake sequence)
 242     */
 243    EHCIqh qh;             /* copy of current QH (being worked on) */
 244    uint32_t qhaddr;       /* address QH read from                 */
 245    uint32_t qtdaddr;      /* address QTD read from                */
 246    int last_pid;          /* pid of last packet executed          */
 247    USBDevice *dev;
 248    QTAILQ_HEAD(, EHCIPacket) packets;
 249};
 250
 251typedef QTAILQ_HEAD(EHCIQueueHead, EHCIQueue) EHCIQueueHead;
 252
 253struct EHCIState {
 254    USBBus bus;
 255    DeviceState *device;
 256    qemu_irq irq;
 257    MemoryRegion mem;
 258    AddressSpace *as;
 259    MemoryRegion mem_caps;
 260    MemoryRegion mem_opreg;
 261    MemoryRegion mem_ports;
 262    int companion_count;
 263    bool companion_enable;
 264    uint16_t capsbase;
 265    uint16_t opregbase;
 266    uint16_t portscbase;
 267    uint16_t portnr;
 268
 269    /* properties */
 270    uint32_t maxframes;
 271
 272    /*
 273     *  EHCI spec version 1.0 Section 2.3
 274     *  Host Controller Operational Registers
 275     */
 276    uint8_t caps[CAPA_SIZE];
 277    union {
 278        uint32_t opreg[0x44/sizeof(uint32_t)];
 279        struct {
 280            uint32_t usbcmd;
 281            uint32_t usbsts;
 282            uint32_t usbintr;
 283            uint32_t frindex;
 284            uint32_t ctrldssegment;
 285            uint32_t periodiclistbase;
 286            uint32_t asynclistaddr;
 287            uint32_t notused[9];
 288            uint32_t configflag;
 289        };
 290    };
 291    uint32_t portsc[NB_PORTS];
 292
 293    /*
 294     *  Internal states, shadow registers, etc
 295     */
 296    QEMUTimer *frame_timer;
 297    QEMUBH *async_bh;
 298    bool working;
 299    uint32_t astate;         /* Current state in asynchronous schedule */
 300    uint32_t pstate;         /* Current state in periodic schedule     */
 301    USBPort ports[NB_PORTS];
 302    USBPort *companion_ports[NB_PORTS];
 303    uint32_t usbsts_pending;
 304    uint32_t usbsts_frindex;
 305    EHCIQueueHead aqueues;
 306    EHCIQueueHead pqueues;
 307
 308    /* which address to look at next */
 309    uint32_t a_fetch_addr;
 310    uint32_t p_fetch_addr;
 311
 312    USBPacket ipacket;
 313    QEMUSGList isgl;
 314
 315    uint64_t last_run_ns;
 316    uint32_t async_stepdown;
 317    uint32_t periodic_sched_active;
 318    bool int_req_by_async;
 319    VMChangeStateEntry *vmstate;
 320};
 321
 322extern const VMStateDescription vmstate_ehci;
 323
 324void usb_ehci_init(EHCIState *s, DeviceState *dev);
 325void usb_ehci_finalize(EHCIState *s);
 326void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp);
 327void usb_ehci_unrealize(EHCIState *s, DeviceState *dev);
 328void ehci_reset(void *opaque);
 329
 330#define TYPE_PCI_EHCI "pci-ehci-usb"
 331OBJECT_DECLARE_SIMPLE_TYPE(EHCIPCIState, PCI_EHCI)
 332
 333struct EHCIPCIState {
 334    /*< private >*/
 335    PCIDevice pcidev;
 336    /*< public >*/
 337
 338    EHCIState ehci;
 339};
 340
 341
 342#define TYPE_SYS_BUS_EHCI "sysbus-ehci-usb"
 343#define TYPE_PLATFORM_EHCI "platform-ehci-usb"
 344#define TYPE_EXYNOS4210_EHCI "exynos4210-ehci-usb"
 345#define TYPE_AW_H3_EHCI "aw-h3-ehci-usb"
 346#define TYPE_NPCM7XX_EHCI "npcm7xx-ehci-usb"
 347#define TYPE_TEGRA2_EHCI "tegra2-ehci-usb"
 348#define TYPE_PPC4xx_EHCI "ppc4xx-ehci-usb"
 349#define TYPE_FUSBH200_EHCI "fusbh200-ehci-usb"
 350
 351OBJECT_DECLARE_TYPE(EHCISysBusState, SysBusEHCIClass, SYS_BUS_EHCI)
 352
 353struct EHCISysBusState {
 354    /*< private >*/
 355    SysBusDevice parent_obj;
 356    /*< public >*/
 357
 358    EHCIState ehci;
 359};
 360
 361struct SysBusEHCIClass {
 362    /*< private >*/
 363    SysBusDeviceClass parent_class;
 364    /*< public >*/
 365
 366    uint16_t capsbase;
 367    uint16_t opregbase;
 368    uint16_t portscbase;
 369    uint16_t portnr;
 370};
 371
 372OBJECT_DECLARE_SIMPLE_TYPE(FUSBH200EHCIState, FUSBH200_EHCI)
 373
 374struct FUSBH200EHCIState {
 375    /*< private >*/
 376    EHCISysBusState parent_obj;
 377    /*< public >*/
 378
 379    MemoryRegion mem_vendor;
 380};
 381
 382#endif
 383
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