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 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 General Public License 15 * along with this program; if not, see <http://www.gnu.org/licenses/>. 16 */ 17 #ifndef HW_USB_EHCI_H 18 #define HW_USB_EHCI_H 1 19 20 #include "hw/hw.h" 21 #include "qemu/timer.h" 22 #include "hw/usb.h" 23 #include "monitor/monitor.h" 24 #include "sysemu/dma.h" 25 #include "sysemu/sysemu.h" 26 #include "hw/pci/pci.h" 27 #include "hw/sysbus.h" 28 29 #ifndef EHCI_DEBUG 30 #define EHCI_DEBUG 0 31 #endif 32 33 #if EHCI_DEBUG 34 #define DPRINTF printf 35 #else 36 #define DPRINTF(...) 37 #endif 38 39 #define MMIO_SIZE 0x1000 40 #define CAPA_SIZE 0x10 41 42 #define NB_PORTS 6 /* Max. Number of downstream ports */ 43 44 typedef struct EHCIPacket EHCIPacket; 45 typedef struct EHCIQueue EHCIQueue; 46 typedef struct EHCIState EHCIState; 47 48 /* EHCI spec version 1.0 Section 3.3 49 */ 50 typedef struct EHCIitd { 51 uint32_t next; 52 53 uint32_t transact[8]; 54 #define ITD_XACT_ACTIVE (1 << 31) 55 #define ITD_XACT_DBERROR (1 << 30) 56 #define ITD_XACT_BABBLE (1 << 29) 57 #define ITD_XACT_XACTERR (1 << 28) 58 #define ITD_XACT_LENGTH_MASK 0x0fff0000 59 #define ITD_XACT_LENGTH_SH 16 60 #define ITD_XACT_IOC (1 << 15) 61 #define ITD_XACT_PGSEL_MASK 0x00007000 62 #define ITD_XACT_PGSEL_SH 12 63 #define ITD_XACT_OFFSET_MASK 0x00000fff 64 65 uint32_t bufptr[7]; 66 #define ITD_BUFPTR_MASK 0xfffff000 67 #define ITD_BUFPTR_SH 12 68 #define ITD_BUFPTR_EP_MASK 0x00000f00 69 #define ITD_BUFPTR_EP_SH 8 70 #define ITD_BUFPTR_DEVADDR_MASK 0x0000007f 71 #define ITD_BUFPTR_DEVADDR_SH 0 72 #define ITD_BUFPTR_DIRECTION (1 << 11) 73 #define ITD_BUFPTR_MAXPKT_MASK 0x000007ff 74 #define ITD_BUFPTR_MAXPKT_SH 0 75 #define ITD_BUFPTR_MULT_MASK 0x00000003 76 #define ITD_BUFPTR_MULT_SH 0 77 } EHCIitd; 78 79 /* EHCI spec version 1.0 Section 3.4 80 */ 81 typedef struct EHCIsitd { 82 uint32_t next; /* Standard next link pointer */ 83 uint32_t epchar; 84 #define SITD_EPCHAR_IO (1 << 31) 85 #define SITD_EPCHAR_PORTNUM_MASK 0x7f000000 86 #define SITD_EPCHAR_PORTNUM_SH 24 87 #define SITD_EPCHAR_HUBADD_MASK 0x007f0000 88 #define SITD_EPCHAR_HUBADDR_SH 16 89 #define SITD_EPCHAR_EPNUM_MASK 0x00000f00 90 #define SITD_EPCHAR_EPNUM_SH 8 91 #define SITD_EPCHAR_DEVADDR_MASK 0x0000007f 92 93 uint32_t uframe; 94 #define SITD_UFRAME_CMASK_MASK 0x0000ff00 95 #define SITD_UFRAME_CMASK_SH 8 96 #define SITD_UFRAME_SMASK_MASK 0x000000ff 97 98 uint32_t results; 99 #define SITD_RESULTS_IOC (1 << 31) 100 #define SITD_RESULTS_PGSEL (1 << 30) 101 #define SITD_RESULTS_TBYTES_MASK 0x03ff0000 102 #define SITD_RESULTS_TYBYTES_SH 16 103 #define SITD_RESULTS_CPROGMASK_MASK 0x0000ff00 104 #define SITD_RESULTS_CPROGMASK_SH 8 105 #define SITD_RESULTS_ACTIVE (1 << 7) 106 #define SITD_RESULTS_ERR (1 << 6) 107 #define SITD_RESULTS_DBERR (1 << 5) 108 #define SITD_RESULTS_BABBLE (1 << 4) 109 #define SITD_RESULTS_XACTERR (1 << 3) 110 #define SITD_RESULTS_MISSEDUF (1 << 2) 111 #define SITD_RESULTS_SPLITXSTATE (1 << 1) 112 113 uint32_t bufptr[2]; 114 #define SITD_BUFPTR_MASK 0xfffff000 115 #define SITD_BUFPTR_CURROFF_MASK 0x00000fff 116 #define SITD_BUFPTR_TPOS_MASK 0x00000018 117 #define SITD_BUFPTR_TPOS_SH 3 118 #define SITD_BUFPTR_TCNT_MASK 0x00000007 119 120 uint32_t backptr; /* Standard next link pointer */ 121 } EHCIsitd; 122 123 /* EHCI spec version 1.0 Section 3.5 124 */ 125 typedef struct EHCIqtd { 126 uint32_t next; /* Standard next link pointer */ 127 uint32_t altnext; /* Standard next link pointer */ 128 uint32_t token; 129 #define QTD_TOKEN_DTOGGLE (1 << 31) 130 #define QTD_TOKEN_TBYTES_MASK 0x7fff0000 131 #define QTD_TOKEN_TBYTES_SH 16 132 #define QTD_TOKEN_IOC (1 << 15) 133 #define QTD_TOKEN_CPAGE_MASK 0x00007000 134 #define QTD_TOKEN_CPAGE_SH 12 135 #define QTD_TOKEN_CERR_MASK 0x00000c00 136 #define QTD_TOKEN_CERR_SH 10 137 #define QTD_TOKEN_PID_MASK 0x00000300 138 #define QTD_TOKEN_PID_SH 8 139 #define QTD_TOKEN_ACTIVE (1 << 7) 140 #define QTD_TOKEN_HALT (1 << 6) 141 #define QTD_TOKEN_DBERR (1 << 5) 142 #define QTD_TOKEN_BABBLE (1 << 4) 143 #define QTD_TOKEN_XACTERR (1 << 3) 144 #define QTD_TOKEN_MISSEDUF (1 << 2) 145 #define QTD_TOKEN_SPLITXSTATE (1 << 1) 146 #define QTD_TOKEN_PING (1 << 0) 147 148 uint32_t bufptr[5]; /* Standard buffer pointer */ 149 #define QTD_BUFPTR_MASK 0xfffff000 150 #define QTD_BUFPTR_SH 12 151 } EHCIqtd; 152 153 /* EHCI spec version 1.0 Section 3.6 154 */ 155 typedef struct EHCIqh { 156 uint32_t next; /* Standard next link pointer */ 157 158 /* endpoint characteristics */ 159 uint32_t epchar; 160 #define QH_EPCHAR_RL_MASK 0xf0000000 161 #define QH_EPCHAR_RL_SH 28 162 #define QH_EPCHAR_C (1 << 27) 163 #define QH_EPCHAR_MPLEN_MASK 0x07FF0000 164 #define QH_EPCHAR_MPLEN_SH 16 165 #define QH_EPCHAR_H (1 << 15) 166 #define QH_EPCHAR_DTC (1 << 14) 167 #define QH_EPCHAR_EPS_MASK 0x00003000 168 #define QH_EPCHAR_EPS_SH 12 169 #define EHCI_QH_EPS_FULL 0 170 #define EHCI_QH_EPS_LOW 1 171 #define EHCI_QH_EPS_HIGH 2 172 #define EHCI_QH_EPS_RESERVED 3 173 174 #define QH_EPCHAR_EP_MASK 0x00000f00 175 #define QH_EPCHAR_EP_SH 8 176 #define QH_EPCHAR_I (1 << 7) 177 #define QH_EPCHAR_DEVADDR_MASK 0x0000007f 178 #define QH_EPCHAR_DEVADDR_SH 0 179 180 /* endpoint capabilities */ 181 uint32_t epcap; 182 #define QH_EPCAP_MULT_MASK 0xc0000000 183 #define QH_EPCAP_MULT_SH 30 184 #define QH_EPCAP_PORTNUM_MASK 0x3f800000 185 #define QH_EPCAP_PORTNUM_SH 23 186 #define QH_EPCAP_HUBADDR_MASK 0x007f0000 187 #define QH_EPCAP_HUBADDR_SH 16 188 #define QH_EPCAP_CMASK_MASK 0x0000ff00 189 #define QH_EPCAP_CMASK_SH 8 190 #define QH_EPCAP_SMASK_MASK 0x000000ff 191 #define QH_EPCAP_SMASK_SH 0 192 193 uint32_t current_qtd; /* Standard next link pointer */ 194 uint32_t next_qtd; /* Standard next link pointer */ 195 uint32_t altnext_qtd; 196 #define QH_ALTNEXT_NAKCNT_MASK 0x0000001e 197 #define QH_ALTNEXT_NAKCNT_SH 1 198 199 uint32_t token; /* Same as QTD token */ 200 uint32_t bufptr[5]; /* Standard buffer pointer */ 201 #define BUFPTR_CPROGMASK_MASK 0x000000ff 202 #define BUFPTR_FRAMETAG_MASK 0x0000001f 203 #define BUFPTR_SBYTES_MASK 0x00000fe0 204 #define BUFPTR_SBYTES_SH 5 205 } EHCIqh; 206 207 /* EHCI spec version 1.0 Section 3.7 208 */ 209 typedef struct EHCIfstn { 210 uint32_t next; /* Standard next link pointer */ 211 uint32_t backptr; /* Standard next link pointer */ 212 } EHCIfstn; 213 214 enum async_state { 215 EHCI_ASYNC_NONE = 0, 216 EHCI_ASYNC_INITIALIZED, 217 EHCI_ASYNC_INFLIGHT, 218 EHCI_ASYNC_FINISHED, 219 }; 220 221 struct EHCIPacket { 222 EHCIQueue *queue; 223 QTAILQ_ENTRY(EHCIPacket) next; 224 225 EHCIqtd qtd; /* copy of current QTD (being worked on) */ 226 uint32_t qtdaddr; /* address QTD read from */ 227 228 USBPacket packet; 229 QEMUSGList sgl; 230 int pid; 231 enum async_state async; 232 }; 233 234 struct EHCIQueue { 235 EHCIState *ehci; 236 QTAILQ_ENTRY(EHCIQueue) next; 237 uint32_t seen; 238 uint64_t ts; 239 int async; 240 int transact_ctr; 241 242 /* cached data from guest - needs to be flushed 243 * when guest removes an entry (doorbell, handshake sequence) 244 */ 245 EHCIqh qh; /* copy of current QH (being worked on) */ 246 uint32_t qhaddr; /* address QH read from */ 247 uint32_t qtdaddr; /* address QTD read from */ 248 int last_pid; /* pid of last packet executed */ 249 USBDevice *dev; 250 QTAILQ_HEAD(pkts_head, EHCIPacket) packets; 251 }; 252 253 typedef QTAILQ_HEAD(EHCIQueueHead, EHCIQueue) EHCIQueueHead; 254 255 struct EHCIState { 256 USBBus bus; 257 DeviceState *device; 258 qemu_irq irq; 259 MemoryRegion mem; 260 AddressSpace *as; 261 MemoryRegion mem_caps; 262 MemoryRegion mem_opreg; 263 MemoryRegion mem_ports; 264 int companion_count; 265 bool companion_enable; 266 uint16_t capsbase; 267 uint16_t opregbase; 268 uint16_t portscbase; 269 uint16_t portnr; 270 271 /* properties */ 272 uint32_t maxframes; 273 274 /* 275 * EHCI spec version 1.0 Section 2.3 276 * Host Controller Operational Registers 277 */ 278 uint8_t caps[CAPA_SIZE]; 279 union { 280 uint32_t opreg[0x44/sizeof(uint32_t)]; 281 struct { 282 uint32_t usbcmd; 283 uint32_t usbsts; 284 uint32_t usbintr; 285 uint32_t frindex; 286 uint32_t ctrldssegment; 287 uint32_t periodiclistbase; 288 uint32_t asynclistaddr; 289 uint32_t notused[9]; 290 uint32_t configflag; 291 }; 292 }; 293 uint32_t portsc[NB_PORTS]; 294 295 /* 296 * Internal states, shadow registers, etc 297 */ 298 QEMUTimer *frame_timer; 299 QEMUBH *async_bh; 300 uint32_t astate; /* Current state in asynchronous schedule */ 301 uint32_t pstate; /* Current state in periodic schedule */ 302 USBPort ports[NB_PORTS]; 303 USBPort *companion_ports[NB_PORTS]; 304 uint32_t usbsts_pending; 305 uint32_t usbsts_frindex; 306 EHCIQueueHead aqueues; 307 EHCIQueueHead pqueues; 308 309 /* which address to look at next */ 310 uint32_t a_fetch_addr; 311 uint32_t p_fetch_addr; 312 313 USBPacket ipacket; 314 QEMUSGList isgl; 315 316 uint64_t last_run_ns; 317 uint32_t async_stepdown; 318 uint32_t periodic_sched_active; 319 bool int_req_by_async; 320 VMChangeStateEntry *vmstate; 321 }; 322 323 extern const VMStateDescription vmstate_ehci; 324 325 void usb_ehci_init(EHCIState *s, DeviceState *dev); 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_EXYNOS4210_EHCI "exynos4210-ehci-usb" 344 #define TYPE_TEGRA2_EHCI "tegra2-ehci-usb" 345 #define TYPE_FUSBH200_EHCI "fusbh200-ehci-usb" 346 347 #define SYS_BUS_EHCI(obj) \ 348 OBJECT_CHECK(EHCISysBusState, (obj), TYPE_SYS_BUS_EHCI) 349 #define SYS_BUS_EHCI_CLASS(class) \ 350 OBJECT_CLASS_CHECK(SysBusEHCIClass, (class), TYPE_SYS_BUS_EHCI) 351 #define SYS_BUS_EHCI_GET_CLASS(obj) \ 352 OBJECT_GET_CLASS(SysBusEHCIClass, (obj), TYPE_SYS_BUS_EHCI) 353 354 typedef struct EHCISysBusState { 355 /*< private >*/ 356 SysBusDevice parent_obj; 357 /*< public >*/ 358 359 EHCIState ehci; 360 } EHCISysBusState; 361 362 typedef struct SysBusEHCIClass { 363 /*< private >*/ 364 SysBusDeviceClass parent_class; 365 /*< public >*/ 366 367 uint16_t capsbase; 368 uint16_t opregbase; 369 uint16_t portscbase; 370 uint16_t portnr; 371 } SysBusEHCIClass; 372 373 #define FUSBH200_EHCI(obj) \ 374 OBJECT_CHECK(FUSBH200EHCIState, (obj), TYPE_FUSBH200_EHCI) 375 376 typedef struct FUSBH200EHCIState { 377 /*< private >*/ 378 EHCISysBusState parent_obj; 379 /*< public >*/ 380 381 MemoryRegion mem_vendor; 382 } FUSBH200EHCIState; 383 384 #endif 385