hw/usb/hcd-ehci.h

   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.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
  42 typedef struct EHCIPacket EHCIPacket;
  43 typedef struct EHCIQueue EHCIQueue;
  44 typedef struct EHCIState EHCIState;
  45
  46 /*  EHCI spec version 1.0 Section 3.3
  47  */
  48 typedef 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  */
  79 typedef 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  */
 123 typedef 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  */
 153 typedef 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  */
 207 typedef struct EHCIfstn {
 208     uint32_t next;                    /* Standard next link pointer */
 209     uint32_t backptr;                 /* Standard next link pointer */
 210 } EHCIfstn;
 211
 212 enum async_state {
 213     EHCI_ASYNC_NONE = 0,
 214     EHCI_ASYNC_INITIALIZED,
 215     EHCI_ASYNC_INFLIGHT,
 216     EHCI_ASYNC_FINISHED,
 217 };
 218
 219 struct 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
 232 struct 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
 251 typedef QTAILQ_HEAD(EHCIQueueHead, EHCIQueue) EHCIQueueHead;
 252
 253 struct 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
 322 extern const VMStateDescription vmstate_ehci;
 323
 324 void usb_ehci_init(EHCIState *s, DeviceState *dev);
 325 void usb_ehci_finalize(EHCIState *s);
 326 void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp);
 327 void usb_ehci_unrealize(EHCIState *s, DeviceState *dev, Error **errp);
 328 void ehci_reset(void *opaque);
 329
 330 #define TYPE_PCI_EHCI "pci-ehci-usb"
 331 #define PCI_EHCI(obj) OBJECT_CHECK(EHCIPCIState, (obj), TYPE_PCI_EHCI)
 332
 333 typedef struct EHCIPCIState {
 334     /*< private >*/
 335     PCIDevice pcidev;
 336     /*< public >*/
 337
 338     EHCIState ehci;
 339 } EHCIPCIState;
 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_TEGRA2_EHCI "tegra2-ehci-usb"
 346 #define TYPE_PPC4xx_EHCI "ppc4xx-ehci-usb"
 347 #define TYPE_FUSBH200_EHCI "fusbh200-ehci-usb"
 348
 349 #define SYS_BUS_EHCI(obj) \
 350     OBJECT_CHECK(EHCISysBusState, (obj), TYPE_SYS_BUS_EHCI)
 351 #define SYS_BUS_EHCI_CLASS(class) \
 352     OBJECT_CLASS_CHECK(SysBusEHCIClass, (class), TYPE_SYS_BUS_EHCI)
 353 #define SYS_BUS_EHCI_GET_CLASS(obj) \
 354     OBJECT_GET_CLASS(SysBusEHCIClass, (obj), TYPE_SYS_BUS_EHCI)
 355
 356 typedef struct EHCISysBusState {
 357     /*< private >*/
 358     SysBusDevice parent_obj;
 359     /*< public >*/
 360
 361     EHCIState ehci;
 362 } EHCISysBusState;
 363
 364 typedef struct SysBusEHCIClass {
 365     /*< private >*/
 366     SysBusDeviceClass parent_class;
 367     /*< public >*/
 368
 369     uint16_t capsbase;
 370     uint16_t opregbase;
 371     uint16_t portscbase;
 372     uint16_t portnr;
 373 } SysBusEHCIClass;
 374
 375 #define FUSBH200_EHCI(obj) \
 376     OBJECT_CHECK(FUSBH200EHCIState, (obj), TYPE_FUSBH200_EHCI)
 377
 378 typedef struct FUSBH200EHCIState {
 379     /*< private >*/
 380     EHCISysBusState parent_obj;
 381     /*< public >*/
 382
 383     MemoryRegion mem_vendor;
 384 } FUSBH200EHCIState;
 385
 386 #endif