| /* |
| * USB xHCI controller emulation |
| * |
| * Copyright (c) 2011 Securiforest |
| * Date: 2011-05-11 ; Author: Hector Martin <hector@marcansoft.com> |
| * Based on usb-ohci.c, emulates Renesas NEC USB 3.0 |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/timer.h" |
| #include "qemu/module.h" |
| #include "qemu/queue.h" |
| #include "migration/vmstate.h" |
| #include "hw/qdev-properties.h" |
| #include "trace.h" |
| #include "qapi/error.h" |
| |
| #include "hcd-xhci.h" |
| |
| //#define DEBUG_XHCI |
| //#define DEBUG_DATA |
| |
| #ifdef DEBUG_XHCI |
| #define DPRINTF(...) fprintf(stderr, __VA_ARGS__) |
| #else |
| #define DPRINTF(...) do {} while (0) |
| #endif |
| #define FIXME(_msg) do { fprintf(stderr, "FIXME %s:%d %s\n", \ |
| __func__, __LINE__, _msg); abort(); } while (0) |
| |
| #define TRB_LINK_LIMIT 32 |
| #define COMMAND_LIMIT 256 |
| #define TRANSFER_LIMIT 256 |
| |
| #define LEN_CAP 0x40 |
| #define LEN_OPER (0x400 + 0x10 * XHCI_MAXPORTS) |
| #define LEN_RUNTIME ((XHCI_MAXINTRS + 1) * 0x20) |
| #define LEN_DOORBELL ((XHCI_MAXSLOTS + 1) * 0x20) |
| |
| #define OFF_OPER LEN_CAP |
| #define OFF_RUNTIME 0x1000 |
| #define OFF_DOORBELL 0x2000 |
| |
| #if (OFF_OPER + LEN_OPER) > OFF_RUNTIME |
| #error Increase OFF_RUNTIME |
| #endif |
| #if (OFF_RUNTIME + LEN_RUNTIME) > OFF_DOORBELL |
| #error Increase OFF_DOORBELL |
| #endif |
| #if (OFF_DOORBELL + LEN_DOORBELL) > XHCI_LEN_REGS |
| # error Increase XHCI_LEN_REGS |
| #endif |
| |
| /* bit definitions */ |
| #define USBCMD_RS (1<<0) |
| #define USBCMD_HCRST (1<<1) |
| #define USBCMD_INTE (1<<2) |
| #define USBCMD_HSEE (1<<3) |
| #define USBCMD_LHCRST (1<<7) |
| #define USBCMD_CSS (1<<8) |
| #define USBCMD_CRS (1<<9) |
| #define USBCMD_EWE (1<<10) |
| #define USBCMD_EU3S (1<<11) |
| |
| #define USBSTS_HCH (1<<0) |
| #define USBSTS_HSE (1<<2) |
| #define USBSTS_EINT (1<<3) |
| #define USBSTS_PCD (1<<4) |
| #define USBSTS_SSS (1<<8) |
| #define USBSTS_RSS (1<<9) |
| #define USBSTS_SRE (1<<10) |
| #define USBSTS_CNR (1<<11) |
| #define USBSTS_HCE (1<<12) |
| |
| |
| #define PORTSC_CCS (1<<0) |
| #define PORTSC_PED (1<<1) |
| #define PORTSC_OCA (1<<3) |
| #define PORTSC_PR (1<<4) |
| #define PORTSC_PLS_SHIFT 5 |
| #define PORTSC_PLS_MASK 0xf |
| #define PORTSC_PP (1<<9) |
| #define PORTSC_SPEED_SHIFT 10 |
| #define PORTSC_SPEED_MASK 0xf |
| #define PORTSC_SPEED_FULL (1<<10) |
| #define PORTSC_SPEED_LOW (2<<10) |
| #define PORTSC_SPEED_HIGH (3<<10) |
| #define PORTSC_SPEED_SUPER (4<<10) |
| #define PORTSC_PIC_SHIFT 14 |
| #define PORTSC_PIC_MASK 0x3 |
| #define PORTSC_LWS (1<<16) |
| #define PORTSC_CSC (1<<17) |
| #define PORTSC_PEC (1<<18) |
| #define PORTSC_WRC (1<<19) |
| #define PORTSC_OCC (1<<20) |
| #define PORTSC_PRC (1<<21) |
| #define PORTSC_PLC (1<<22) |
| #define PORTSC_CEC (1<<23) |
| #define PORTSC_CAS (1<<24) |
| #define PORTSC_WCE (1<<25) |
| #define PORTSC_WDE (1<<26) |
| #define PORTSC_WOE (1<<27) |
| #define PORTSC_DR (1<<30) |
| #define PORTSC_WPR (1<<31) |
| |
| #define CRCR_RCS (1<<0) |
| #define CRCR_CS (1<<1) |
| #define CRCR_CA (1<<2) |
| #define CRCR_CRR (1<<3) |
| |
| #define IMAN_IP (1<<0) |
| #define IMAN_IE (1<<1) |
| |
| #define ERDP_EHB (1<<3) |
| |
| #define TRB_SIZE 16 |
| typedef struct XHCITRB { |
| uint64_t parameter; |
| uint32_t status; |
| uint32_t control; |
| dma_addr_t addr; |
| bool ccs; |
| } XHCITRB; |
| |
| enum { |
| PLS_U0 = 0, |
| PLS_U1 = 1, |
| PLS_U2 = 2, |
| PLS_U3 = 3, |
| PLS_DISABLED = 4, |
| PLS_RX_DETECT = 5, |
| PLS_INACTIVE = 6, |
| PLS_POLLING = 7, |
| PLS_RECOVERY = 8, |
| PLS_HOT_RESET = 9, |
| PLS_COMPILANCE_MODE = 10, |
| PLS_TEST_MODE = 11, |
| PLS_RESUME = 15, |
| }; |
| |
| #define CR_LINK TR_LINK |
| |
| #define TRB_C (1<<0) |
| #define TRB_TYPE_SHIFT 10 |
| #define TRB_TYPE_MASK 0x3f |
| #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK) |
| |
| #define TRB_EV_ED (1<<2) |
| |
| #define TRB_TR_ENT (1<<1) |
| #define TRB_TR_ISP (1<<2) |
| #define TRB_TR_NS (1<<3) |
| #define TRB_TR_CH (1<<4) |
| #define TRB_TR_IOC (1<<5) |
| #define TRB_TR_IDT (1<<6) |
| #define TRB_TR_TBC_SHIFT 7 |
| #define TRB_TR_TBC_MASK 0x3 |
| #define TRB_TR_BEI (1<<9) |
| #define TRB_TR_TLBPC_SHIFT 16 |
| #define TRB_TR_TLBPC_MASK 0xf |
| #define TRB_TR_FRAMEID_SHIFT 20 |
| #define TRB_TR_FRAMEID_MASK 0x7ff |
| #define TRB_TR_SIA (1<<31) |
| |
| #define TRB_TR_DIR (1<<16) |
| |
| #define TRB_CR_SLOTID_SHIFT 24 |
| #define TRB_CR_SLOTID_MASK 0xff |
| #define TRB_CR_EPID_SHIFT 16 |
| #define TRB_CR_EPID_MASK 0x1f |
| |
| #define TRB_CR_BSR (1<<9) |
| #define TRB_CR_DC (1<<9) |
| |
| #define TRB_LK_TC (1<<1) |
| |
| #define TRB_INTR_SHIFT 22 |
| #define TRB_INTR_MASK 0x3ff |
| #define TRB_INTR(t) (((t).status >> TRB_INTR_SHIFT) & TRB_INTR_MASK) |
| |
| #define EP_TYPE_MASK 0x7 |
| #define EP_TYPE_SHIFT 3 |
| |
| #define EP_STATE_MASK 0x7 |
| #define EP_DISABLED (0<<0) |
| #define EP_RUNNING (1<<0) |
| #define EP_HALTED (2<<0) |
| #define EP_STOPPED (3<<0) |
| #define EP_ERROR (4<<0) |
| |
| #define SLOT_STATE_MASK 0x1f |
| #define SLOT_STATE_SHIFT 27 |
| #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK) |
| #define SLOT_ENABLED 0 |
| #define SLOT_DEFAULT 1 |
| #define SLOT_ADDRESSED 2 |
| #define SLOT_CONFIGURED 3 |
| |
| #define SLOT_CONTEXT_ENTRIES_MASK 0x1f |
| #define SLOT_CONTEXT_ENTRIES_SHIFT 27 |
| |
| #define get_field(data, field) \ |
| (((data) >> field##_SHIFT) & field##_MASK) |
| |
| #define set_field(data, newval, field) do { \ |
| uint32_t val = *data; \ |
| val &= ~(field##_MASK << field##_SHIFT); \ |
| val |= ((newval) & field##_MASK) << field##_SHIFT; \ |
| *data = val; \ |
| } while (0) |
| |
| typedef enum EPType { |
| ET_INVALID = 0, |
| ET_ISO_OUT, |
| ET_BULK_OUT, |
| ET_INTR_OUT, |
| ET_CONTROL, |
| ET_ISO_IN, |
| ET_BULK_IN, |
| ET_INTR_IN, |
| } EPType; |
| |
| typedef struct XHCITransfer { |
| XHCIEPContext *epctx; |
| USBPacket packet; |
| QEMUSGList sgl; |
| bool running_async; |
| bool running_retry; |
| bool complete; |
| bool int_req; |
| unsigned int iso_pkts; |
| unsigned int streamid; |
| bool in_xfer; |
| bool iso_xfer; |
| bool timed_xfer; |
| |
| unsigned int trb_count; |
| XHCITRB *trbs; |
| |
| TRBCCode status; |
| |
| unsigned int pkts; |
| unsigned int pktsize; |
| unsigned int cur_pkt; |
| |
| uint64_t mfindex_kick; |
| |
| QTAILQ_ENTRY(XHCITransfer) next; |
| } XHCITransfer; |
| |
| struct XHCIStreamContext { |
| dma_addr_t pctx; |
| unsigned int sct; |
| XHCIRing ring; |
| }; |
| |
| struct XHCIEPContext { |
| XHCIState *xhci; |
| unsigned int slotid; |
| unsigned int epid; |
| |
| XHCIRing ring; |
| uint32_t xfer_count; |
| QTAILQ_HEAD(, XHCITransfer) transfers; |
| XHCITransfer *retry; |
| EPType type; |
| dma_addr_t pctx; |
| unsigned int max_psize; |
| uint32_t state; |
| uint32_t kick_active; |
| |
| /* streams */ |
| unsigned int max_pstreams; |
| bool lsa; |
| unsigned int nr_pstreams; |
| XHCIStreamContext *pstreams; |
| |
| /* iso xfer scheduling */ |
| unsigned int interval; |
| int64_t mfindex_last; |
| QEMUTimer *kick_timer; |
| }; |
| |
| typedef struct XHCIEvRingSeg { |
| uint32_t addr_low; |
| uint32_t addr_high; |
| uint32_t size; |
| uint32_t rsvd; |
| } XHCIEvRingSeg; |
| |
| static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid, unsigned int streamid); |
| static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid); |
| static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid); |
| static void xhci_xfer_report(XHCITransfer *xfer); |
| static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v); |
| static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v); |
| static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx); |
| |
| static const char *TRBType_names[] = { |
| [TRB_RESERVED] = "TRB_RESERVED", |
| [TR_NORMAL] = "TR_NORMAL", |
| [TR_SETUP] = "TR_SETUP", |
| [TR_DATA] = "TR_DATA", |
| [TR_STATUS] = "TR_STATUS", |
| [TR_ISOCH] = "TR_ISOCH", |
| [TR_LINK] = "TR_LINK", |
| [TR_EVDATA] = "TR_EVDATA", |
| [TR_NOOP] = "TR_NOOP", |
| [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT", |
| [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT", |
| [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE", |
| [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT", |
| [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT", |
| [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT", |
| [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT", |
| [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE", |
| [CR_RESET_DEVICE] = "CR_RESET_DEVICE", |
| [CR_FORCE_EVENT] = "CR_FORCE_EVENT", |
| [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW", |
| [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE", |
| [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH", |
| [CR_FORCE_HEADER] = "CR_FORCE_HEADER", |
| [CR_NOOP] = "CR_NOOP", |
| [ER_TRANSFER] = "ER_TRANSFER", |
| [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE", |
| [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE", |
| [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST", |
| [ER_DOORBELL] = "ER_DOORBELL", |
| [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER", |
| [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION", |
| [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP", |
| [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION", |
| [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE", |
| }; |
| |
| static const char *TRBCCode_names[] = { |
| [CC_INVALID] = "CC_INVALID", |
| [CC_SUCCESS] = "CC_SUCCESS", |
| [CC_DATA_BUFFER_ERROR] = "CC_DATA_BUFFER_ERROR", |
| [CC_BABBLE_DETECTED] = "CC_BABBLE_DETECTED", |
| [CC_USB_TRANSACTION_ERROR] = "CC_USB_TRANSACTION_ERROR", |
| [CC_TRB_ERROR] = "CC_TRB_ERROR", |
| [CC_STALL_ERROR] = "CC_STALL_ERROR", |
| [CC_RESOURCE_ERROR] = "CC_RESOURCE_ERROR", |
| [CC_BANDWIDTH_ERROR] = "CC_BANDWIDTH_ERROR", |
| [CC_NO_SLOTS_ERROR] = "CC_NO_SLOTS_ERROR", |
| [CC_INVALID_STREAM_TYPE_ERROR] = "CC_INVALID_STREAM_TYPE_ERROR", |
| [CC_SLOT_NOT_ENABLED_ERROR] = "CC_SLOT_NOT_ENABLED_ERROR", |
| [CC_EP_NOT_ENABLED_ERROR] = "CC_EP_NOT_ENABLED_ERROR", |
| [CC_SHORT_PACKET] = "CC_SHORT_PACKET", |
| [CC_RING_UNDERRUN] = "CC_RING_UNDERRUN", |
| [CC_RING_OVERRUN] = "CC_RING_OVERRUN", |
| [CC_VF_ER_FULL] = "CC_VF_ER_FULL", |
| [CC_PARAMETER_ERROR] = "CC_PARAMETER_ERROR", |
| [CC_BANDWIDTH_OVERRUN] = "CC_BANDWIDTH_OVERRUN", |
| [CC_CONTEXT_STATE_ERROR] = "CC_CONTEXT_STATE_ERROR", |
| [CC_NO_PING_RESPONSE_ERROR] = "CC_NO_PING_RESPONSE_ERROR", |
| [CC_EVENT_RING_FULL_ERROR] = "CC_EVENT_RING_FULL_ERROR", |
| [CC_INCOMPATIBLE_DEVICE_ERROR] = "CC_INCOMPATIBLE_DEVICE_ERROR", |
| [CC_MISSED_SERVICE_ERROR] = "CC_MISSED_SERVICE_ERROR", |
| [CC_COMMAND_RING_STOPPED] = "CC_COMMAND_RING_STOPPED", |
| [CC_COMMAND_ABORTED] = "CC_COMMAND_ABORTED", |
| [CC_STOPPED] = "CC_STOPPED", |
| [CC_STOPPED_LENGTH_INVALID] = "CC_STOPPED_LENGTH_INVALID", |
| [CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR] |
| = "CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR", |
| [CC_ISOCH_BUFFER_OVERRUN] = "CC_ISOCH_BUFFER_OVERRUN", |
| [CC_EVENT_LOST_ERROR] = "CC_EVENT_LOST_ERROR", |
| [CC_UNDEFINED_ERROR] = "CC_UNDEFINED_ERROR", |
| [CC_INVALID_STREAM_ID_ERROR] = "CC_INVALID_STREAM_ID_ERROR", |
| [CC_SECONDARY_BANDWIDTH_ERROR] = "CC_SECONDARY_BANDWIDTH_ERROR", |
| [CC_SPLIT_TRANSACTION_ERROR] = "CC_SPLIT_TRANSACTION_ERROR", |
| }; |
| |
| static const char *ep_state_names[] = { |
| [EP_DISABLED] = "disabled", |
| [EP_RUNNING] = "running", |
| [EP_HALTED] = "halted", |
| [EP_STOPPED] = "stopped", |
| [EP_ERROR] = "error", |
| }; |
| |
| static const char *lookup_name(uint32_t index, const char **list, uint32_t llen) |
| { |
| if (index >= llen || list[index] == NULL) { |
| return "???"; |
| } |
| return list[index]; |
| } |
| |
| static const char *trb_name(XHCITRB *trb) |
| { |
| return lookup_name(TRB_TYPE(*trb), TRBType_names, |
| ARRAY_SIZE(TRBType_names)); |
| } |
| |
| static const char *event_name(XHCIEvent *event) |
| { |
| return lookup_name(event->ccode, TRBCCode_names, |
| ARRAY_SIZE(TRBCCode_names)); |
| } |
| |
| static const char *ep_state_name(uint32_t state) |
| { |
| return lookup_name(state, ep_state_names, |
| ARRAY_SIZE(ep_state_names)); |
| } |
| |
| bool xhci_get_flag(XHCIState *xhci, enum xhci_flags bit) |
| { |
| return xhci->flags & (1 << bit); |
| } |
| |
| void xhci_set_flag(XHCIState *xhci, enum xhci_flags bit) |
| { |
| xhci->flags |= (1 << bit); |
| } |
| |
| static uint64_t xhci_mfindex_get(XHCIState *xhci) |
| { |
| int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| return (now - xhci->mfindex_start) / 125000; |
| } |
| |
| static void xhci_mfwrap_update(XHCIState *xhci) |
| { |
| const uint32_t bits = USBCMD_RS | USBCMD_EWE; |
| uint32_t mfindex, left; |
| int64_t now; |
| |
| if ((xhci->usbcmd & bits) == bits) { |
| now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff; |
| left = 0x4000 - mfindex; |
| timer_mod(xhci->mfwrap_timer, now + left * 125000); |
| } else { |
| timer_del(xhci->mfwrap_timer); |
| } |
| } |
| |
| static void xhci_mfwrap_timer(void *opaque) |
| { |
| XHCIState *xhci = opaque; |
| XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS }; |
| |
| xhci_event(xhci, &wrap, 0); |
| xhci_mfwrap_update(xhci); |
| } |
| |
| static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high) |
| { |
| if (sizeof(dma_addr_t) == 4) { |
| return low; |
| } else { |
| return low | (((dma_addr_t)high << 16) << 16); |
| } |
| } |
| |
| static inline dma_addr_t xhci_mask64(uint64_t addr) |
| { |
| if (sizeof(dma_addr_t) == 4) { |
| return addr & 0xffffffff; |
| } else { |
| return addr; |
| } |
| } |
| |
| static inline void xhci_dma_read_u32s(XHCIState *xhci, dma_addr_t addr, |
| uint32_t *buf, size_t len) |
| { |
| int i; |
| |
| assert((len % sizeof(uint32_t)) == 0); |
| |
| dma_memory_read(xhci->as, addr, buf, len); |
| |
| for (i = 0; i < (len / sizeof(uint32_t)); i++) { |
| buf[i] = le32_to_cpu(buf[i]); |
| } |
| } |
| |
| static inline void xhci_dma_write_u32s(XHCIState *xhci, dma_addr_t addr, |
| uint32_t *buf, size_t len) |
| { |
| int i; |
| uint32_t tmp[5]; |
| uint32_t n = len / sizeof(uint32_t); |
| |
| assert((len % sizeof(uint32_t)) == 0); |
| assert(n <= ARRAY_SIZE(tmp)); |
| |
| for (i = 0; i < n; i++) { |
| tmp[i] = cpu_to_le32(buf[i]); |
| } |
| dma_memory_write(xhci->as, addr, tmp, len); |
| } |
| |
| static XHCIPort *xhci_lookup_port(XHCIState *xhci, struct USBPort *uport) |
| { |
| int index; |
| |
| if (!uport->dev) { |
| return NULL; |
| } |
| switch (uport->dev->speed) { |
| case USB_SPEED_LOW: |
| case USB_SPEED_FULL: |
| case USB_SPEED_HIGH: |
| if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { |
| index = uport->index + xhci->numports_3; |
| } else { |
| index = uport->index; |
| } |
| break; |
| case USB_SPEED_SUPER: |
| if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { |
| index = uport->index; |
| } else { |
| index = uport->index + xhci->numports_2; |
| } |
| break; |
| default: |
| return NULL; |
| } |
| return &xhci->ports[index]; |
| } |
| |
| static void xhci_intr_update(XHCIState *xhci, int v) |
| { |
| int level = 0; |
| |
| if (v == 0) { |
| if (xhci->intr[0].iman & IMAN_IP && |
| xhci->intr[0].iman & IMAN_IE && |
| xhci->usbcmd & USBCMD_INTE) { |
| level = 1; |
| } |
| if (xhci->intr_raise) { |
| if (xhci->intr_raise(xhci, 0, level)) { |
| xhci->intr[0].iman &= ~IMAN_IP; |
| } |
| } |
| } |
| if (xhci->intr_update) { |
| xhci->intr_update(xhci, v, |
| xhci->intr[v].iman & IMAN_IE); |
| } |
| } |
| |
| static void xhci_intr_raise(XHCIState *xhci, int v) |
| { |
| bool pending = (xhci->intr[v].erdp_low & ERDP_EHB); |
| |
| xhci->intr[v].erdp_low |= ERDP_EHB; |
| xhci->intr[v].iman |= IMAN_IP; |
| xhci->usbsts |= USBSTS_EINT; |
| |
| if (pending) { |
| return; |
| } |
| if (!(xhci->intr[v].iman & IMAN_IE)) { |
| return; |
| } |
| |
| if (!(xhci->usbcmd & USBCMD_INTE)) { |
| return; |
| } |
| if (xhci->intr_raise) { |
| if (xhci->intr_raise(xhci, v, true)) { |
| xhci->intr[v].iman &= ~IMAN_IP; |
| } |
| } |
| } |
| |
| static inline int xhci_running(XHCIState *xhci) |
| { |
| return !(xhci->usbsts & USBSTS_HCH); |
| } |
| |
| static void xhci_die(XHCIState *xhci) |
| { |
| xhci->usbsts |= USBSTS_HCE; |
| DPRINTF("xhci: asserted controller error\n"); |
| } |
| |
| static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v) |
| { |
| XHCIInterrupter *intr = &xhci->intr[v]; |
| XHCITRB ev_trb; |
| dma_addr_t addr; |
| |
| ev_trb.parameter = cpu_to_le64(event->ptr); |
| ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24)); |
| ev_trb.control = (event->slotid << 24) | (event->epid << 16) | |
| event->flags | (event->type << TRB_TYPE_SHIFT); |
| if (intr->er_pcs) { |
| ev_trb.control |= TRB_C; |
| } |
| ev_trb.control = cpu_to_le32(ev_trb.control); |
| |
| trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb), |
| event_name(event), ev_trb.parameter, |
| ev_trb.status, ev_trb.control); |
| |
| addr = intr->er_start + TRB_SIZE*intr->er_ep_idx; |
| dma_memory_write(xhci->as, addr, &ev_trb, TRB_SIZE); |
| |
| intr->er_ep_idx++; |
| if (intr->er_ep_idx >= intr->er_size) { |
| intr->er_ep_idx = 0; |
| intr->er_pcs = !intr->er_pcs; |
| } |
| } |
| |
| static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v) |
| { |
| XHCIInterrupter *intr; |
| dma_addr_t erdp; |
| unsigned int dp_idx; |
| |
| if (v >= xhci->numintrs) { |
| DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs); |
| return; |
| } |
| intr = &xhci->intr[v]; |
| |
| erdp = xhci_addr64(intr->erdp_low, intr->erdp_high); |
| if (erdp < intr->er_start || |
| erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) { |
| DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp); |
| DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n", |
| v, intr->er_start, intr->er_size); |
| xhci_die(xhci); |
| return; |
| } |
| |
| dp_idx = (erdp - intr->er_start) / TRB_SIZE; |
| assert(dp_idx < intr->er_size); |
| |
| if ((intr->er_ep_idx + 2) % intr->er_size == dp_idx) { |
| DPRINTF("xhci: ER %d full, send ring full error\n", v); |
| XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR}; |
| xhci_write_event(xhci, &full, v); |
| } else if ((intr->er_ep_idx + 1) % intr->er_size == dp_idx) { |
| DPRINTF("xhci: ER %d full, drop event\n", v); |
| } else { |
| xhci_write_event(xhci, event, v); |
| } |
| |
| xhci_intr_raise(xhci, v); |
| } |
| |
| static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring, |
| dma_addr_t base) |
| { |
| ring->dequeue = base; |
| ring->ccs = 1; |
| } |
| |
| static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb, |
| dma_addr_t *addr) |
| { |
| uint32_t link_cnt = 0; |
| |
| while (1) { |
| TRBType type; |
| dma_memory_read(xhci->as, ring->dequeue, trb, TRB_SIZE); |
| trb->addr = ring->dequeue; |
| trb->ccs = ring->ccs; |
| le64_to_cpus(&trb->parameter); |
| le32_to_cpus(&trb->status); |
| le32_to_cpus(&trb->control); |
| |
| trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb), |
| trb->parameter, trb->status, trb->control); |
| |
| if ((trb->control & TRB_C) != ring->ccs) { |
| return 0; |
| } |
| |
| type = TRB_TYPE(*trb); |
| |
| if (type != TR_LINK) { |
| if (addr) { |
| *addr = ring->dequeue; |
| } |
| ring->dequeue += TRB_SIZE; |
| return type; |
| } else { |
| if (++link_cnt > TRB_LINK_LIMIT) { |
| trace_usb_xhci_enforced_limit("trb-link"); |
| return 0; |
| } |
| ring->dequeue = xhci_mask64(trb->parameter); |
| if (trb->control & TRB_LK_TC) { |
| ring->ccs = !ring->ccs; |
| } |
| } |
| } |
| } |
| |
| static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring) |
| { |
| XHCITRB trb; |
| int length = 0; |
| dma_addr_t dequeue = ring->dequeue; |
| bool ccs = ring->ccs; |
| /* hack to bundle together the two/three TDs that make a setup transfer */ |
| bool control_td_set = 0; |
| uint32_t link_cnt = 0; |
| |
| while (1) { |
| TRBType type; |
| dma_memory_read(xhci->as, dequeue, &trb, TRB_SIZE); |
| le64_to_cpus(&trb.parameter); |
| le32_to_cpus(&trb.status); |
| le32_to_cpus(&trb.control); |
| |
| if ((trb.control & TRB_C) != ccs) { |
| return -length; |
| } |
| |
| type = TRB_TYPE(trb); |
| |
| if (type == TR_LINK) { |
| if (++link_cnt > TRB_LINK_LIMIT) { |
| return -length; |
| } |
| dequeue = xhci_mask64(trb.parameter); |
| if (trb.control & TRB_LK_TC) { |
| ccs = !ccs; |
| } |
| continue; |
| } |
| |
| length += 1; |
| dequeue += TRB_SIZE; |
| |
| if (type == TR_SETUP) { |
| control_td_set = 1; |
| } else if (type == TR_STATUS) { |
| control_td_set = 0; |
| } |
| |
| if (!control_td_set && !(trb.control & TRB_TR_CH)) { |
| return length; |
| } |
| } |
| } |
| |
| static void xhci_er_reset(XHCIState *xhci, int v) |
| { |
| XHCIInterrupter *intr = &xhci->intr[v]; |
| XHCIEvRingSeg seg; |
| dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high); |
| |
| if (intr->erstsz == 0 || erstba == 0) { |
| /* disabled */ |
| intr->er_start = 0; |
| intr->er_size = 0; |
| return; |
| } |
| /* cache the (sole) event ring segment location */ |
| if (intr->erstsz != 1) { |
| DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz); |
| xhci_die(xhci); |
| return; |
| } |
| dma_memory_read(xhci->as, erstba, &seg, sizeof(seg)); |
| le32_to_cpus(&seg.addr_low); |
| le32_to_cpus(&seg.addr_high); |
| le32_to_cpus(&seg.size); |
| if (seg.size < 16 || seg.size > 4096) { |
| DPRINTF("xhci: invalid value for segment size: %d\n", seg.size); |
| xhci_die(xhci); |
| return; |
| } |
| intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high); |
| intr->er_size = seg.size; |
| |
| intr->er_ep_idx = 0; |
| intr->er_pcs = 1; |
| |
| DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n", |
| v, intr->er_start, intr->er_size); |
| } |
| |
| static void xhci_run(XHCIState *xhci) |
| { |
| trace_usb_xhci_run(); |
| xhci->usbsts &= ~USBSTS_HCH; |
| xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| } |
| |
| static void xhci_stop(XHCIState *xhci) |
| { |
| trace_usb_xhci_stop(); |
| xhci->usbsts |= USBSTS_HCH; |
| xhci->crcr_low &= ~CRCR_CRR; |
| } |
| |
| static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count, |
| dma_addr_t base) |
| { |
| XHCIStreamContext *stctx; |
| unsigned int i; |
| |
| stctx = g_new0(XHCIStreamContext, count); |
| for (i = 0; i < count; i++) { |
| stctx[i].pctx = base + i * 16; |
| stctx[i].sct = -1; |
| } |
| return stctx; |
| } |
| |
| static void xhci_reset_streams(XHCIEPContext *epctx) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < epctx->nr_pstreams; i++) { |
| epctx->pstreams[i].sct = -1; |
| } |
| } |
| |
| static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base) |
| { |
| assert(epctx->pstreams == NULL); |
| epctx->nr_pstreams = 2 << epctx->max_pstreams; |
| epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base); |
| } |
| |
| static void xhci_free_streams(XHCIEPContext *epctx) |
| { |
| assert(epctx->pstreams != NULL); |
| |
| g_free(epctx->pstreams); |
| epctx->pstreams = NULL; |
| epctx->nr_pstreams = 0; |
| } |
| |
| static int xhci_epmask_to_eps_with_streams(XHCIState *xhci, |
| unsigned int slotid, |
| uint32_t epmask, |
| XHCIEPContext **epctxs, |
| USBEndpoint **eps) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| USBEndpoint *ep; |
| int i, j; |
| |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| slot = &xhci->slots[slotid - 1]; |
| |
| for (i = 2, j = 0; i <= 31; i++) { |
| if (!(epmask & (1u << i))) { |
| continue; |
| } |
| |
| epctx = slot->eps[i - 1]; |
| ep = xhci_epid_to_usbep(epctx); |
| if (!epctx || !epctx->nr_pstreams || !ep) { |
| continue; |
| } |
| |
| if (epctxs) { |
| epctxs[j] = epctx; |
| } |
| eps[j++] = ep; |
| } |
| return j; |
| } |
| |
| static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid, |
| uint32_t epmask) |
| { |
| USBEndpoint *eps[30]; |
| int nr_eps; |
| |
| nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps); |
| if (nr_eps) { |
| usb_device_free_streams(eps[0]->dev, eps, nr_eps); |
| } |
| } |
| |
| static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid, |
| uint32_t epmask) |
| { |
| XHCIEPContext *epctxs[30]; |
| USBEndpoint *eps[30]; |
| int i, r, nr_eps, req_nr_streams, dev_max_streams; |
| |
| nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs, |
| eps); |
| if (nr_eps == 0) { |
| return CC_SUCCESS; |
| } |
| |
| req_nr_streams = epctxs[0]->nr_pstreams; |
| dev_max_streams = eps[0]->max_streams; |
| |
| for (i = 1; i < nr_eps; i++) { |
| /* |
| * HdG: I don't expect these to ever trigger, but if they do we need |
| * to come up with another solution, ie group identical endpoints |
| * together and make an usb_device_alloc_streams call per group. |
| */ |
| if (epctxs[i]->nr_pstreams != req_nr_streams) { |
| FIXME("guest streams config not identical for all eps"); |
| return CC_RESOURCE_ERROR; |
| } |
| if (eps[i]->max_streams != dev_max_streams) { |
| FIXME("device streams config not identical for all eps"); |
| return CC_RESOURCE_ERROR; |
| } |
| } |
| |
| /* |
| * max-streams in both the device descriptor and in the controller is a |
| * power of 2. But stream id 0 is reserved, so if a device can do up to 4 |
| * streams the guest will ask for 5 rounded up to the next power of 2 which |
| * becomes 8. For emulated devices usb_device_alloc_streams is a nop. |
| * |
| * For redirected devices however this is an issue, as there we must ask |
| * the real xhci controller to alloc streams, and the host driver for the |
| * real xhci controller will likely disallow allocating more streams then |
| * the device can handle. |
| * |
| * So we limit the requested nr_streams to the maximum number the device |
| * can handle. |
| */ |
| if (req_nr_streams > dev_max_streams) { |
| req_nr_streams = dev_max_streams; |
| } |
| |
| r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams); |
| if (r != 0) { |
| DPRINTF("xhci: alloc streams failed\n"); |
| return CC_RESOURCE_ERROR; |
| } |
| |
| return CC_SUCCESS; |
| } |
| |
| static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx, |
| unsigned int streamid, |
| uint32_t *cc_error) |
| { |
| XHCIStreamContext *sctx; |
| dma_addr_t base; |
| uint32_t ctx[2], sct; |
| |
| assert(streamid != 0); |
| if (epctx->lsa) { |
| if (streamid >= epctx->nr_pstreams) { |
| *cc_error = CC_INVALID_STREAM_ID_ERROR; |
| return NULL; |
| } |
| sctx = epctx->pstreams + streamid; |
| } else { |
| FIXME("secondary streams not implemented yet"); |
| } |
| |
| if (sctx->sct == -1) { |
| xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx)); |
| sct = (ctx[0] >> 1) & 0x07; |
| if (epctx->lsa && sct != 1) { |
| *cc_error = CC_INVALID_STREAM_TYPE_ERROR; |
| return NULL; |
| } |
| sctx->sct = sct; |
| base = xhci_addr64(ctx[0] & ~0xf, ctx[1]); |
| xhci_ring_init(epctx->xhci, &sctx->ring, base); |
| } |
| return sctx; |
| } |
| |
| static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx, |
| XHCIStreamContext *sctx, uint32_t state) |
| { |
| XHCIRing *ring = NULL; |
| uint32_t ctx[5]; |
| uint32_t ctx2[2]; |
| |
| xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx)); |
| ctx[0] &= ~EP_STATE_MASK; |
| ctx[0] |= state; |
| |
| /* update ring dequeue ptr */ |
| if (epctx->nr_pstreams) { |
| if (sctx != NULL) { |
| ring = &sctx->ring; |
| xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2)); |
| ctx2[0] &= 0xe; |
| ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs; |
| ctx2[1] = (sctx->ring.dequeue >> 16) >> 16; |
| xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2)); |
| } |
| } else { |
| ring = &epctx->ring; |
| } |
| if (ring) { |
| ctx[2] = ring->dequeue | ring->ccs; |
| ctx[3] = (ring->dequeue >> 16) >> 16; |
| |
| DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n", |
| epctx->pctx, state, ctx[3], ctx[2]); |
| } |
| |
| xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx)); |
| if (epctx->state != state) { |
| trace_usb_xhci_ep_state(epctx->slotid, epctx->epid, |
| ep_state_name(epctx->state), |
| ep_state_name(state)); |
| } |
| epctx->state = state; |
| } |
| |
| static void xhci_ep_kick_timer(void *opaque) |
| { |
| XHCIEPContext *epctx = opaque; |
| xhci_kick_epctx(epctx, 0); |
| } |
| |
| static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci, |
| unsigned int slotid, |
| unsigned int epid) |
| { |
| XHCIEPContext *epctx; |
| |
| epctx = g_new0(XHCIEPContext, 1); |
| epctx->xhci = xhci; |
| epctx->slotid = slotid; |
| epctx->epid = epid; |
| |
| QTAILQ_INIT(&epctx->transfers); |
| epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx); |
| |
| return epctx; |
| } |
| |
| static void xhci_init_epctx(XHCIEPContext *epctx, |
| dma_addr_t pctx, uint32_t *ctx) |
| { |
| dma_addr_t dequeue; |
| |
| dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]); |
| |
| epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK; |
| epctx->pctx = pctx; |
| epctx->max_psize = ctx[1]>>16; |
| epctx->max_psize *= 1+((ctx[1]>>8)&0xff); |
| epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask; |
| epctx->lsa = (ctx[0] >> 15) & 1; |
| if (epctx->max_pstreams) { |
| xhci_alloc_streams(epctx, dequeue); |
| } else { |
| xhci_ring_init(epctx->xhci, &epctx->ring, dequeue); |
| epctx->ring.ccs = ctx[2] & 1; |
| } |
| |
| epctx->interval = 1 << ((ctx[0] >> 16) & 0xff); |
| } |
| |
| static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid, dma_addr_t pctx, |
| uint32_t *ctx) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| |
| trace_usb_xhci_ep_enable(slotid, epid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| assert(epid >= 1 && epid <= 31); |
| |
| slot = &xhci->slots[slotid-1]; |
| if (slot->eps[epid-1]) { |
| xhci_disable_ep(xhci, slotid, epid); |
| } |
| |
| epctx = xhci_alloc_epctx(xhci, slotid, epid); |
| slot->eps[epid-1] = epctx; |
| xhci_init_epctx(epctx, pctx, ctx); |
| |
| DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) " |
| "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize); |
| |
| epctx->mfindex_last = 0; |
| |
| epctx->state = EP_RUNNING; |
| ctx[0] &= ~EP_STATE_MASK; |
| ctx[0] |= EP_RUNNING; |
| |
| return CC_SUCCESS; |
| } |
| |
| static XHCITransfer *xhci_ep_alloc_xfer(XHCIEPContext *epctx, |
| uint32_t length) |
| { |
| uint32_t limit = epctx->nr_pstreams + 16; |
| XHCITransfer *xfer; |
| |
| if (epctx->xfer_count >= limit) { |
| return NULL; |
| } |
| |
| xfer = g_new0(XHCITransfer, 1); |
| xfer->epctx = epctx; |
| xfer->trbs = g_new(XHCITRB, length); |
| xfer->trb_count = length; |
| usb_packet_init(&xfer->packet); |
| |
| QTAILQ_INSERT_TAIL(&epctx->transfers, xfer, next); |
| epctx->xfer_count++; |
| |
| return xfer; |
| } |
| |
| static void xhci_ep_free_xfer(XHCITransfer *xfer) |
| { |
| QTAILQ_REMOVE(&xfer->epctx->transfers, xfer, next); |
| xfer->epctx->xfer_count--; |
| |
| usb_packet_cleanup(&xfer->packet); |
| g_free(xfer->trbs); |
| g_free(xfer); |
| } |
| |
| static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report) |
| { |
| int killed = 0; |
| |
| if (report && (t->running_async || t->running_retry)) { |
| t->status = report; |
| xhci_xfer_report(t); |
| } |
| |
| if (t->running_async) { |
| usb_cancel_packet(&t->packet); |
| t->running_async = 0; |
| killed = 1; |
| } |
| if (t->running_retry) { |
| if (t->epctx) { |
| t->epctx->retry = NULL; |
| timer_del(t->epctx->kick_timer); |
| } |
| t->running_retry = 0; |
| killed = 1; |
| } |
| g_free(t->trbs); |
| |
| t->trbs = NULL; |
| t->trb_count = 0; |
| |
| return killed; |
| } |
| |
| static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid, TRBCCode report) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| XHCITransfer *xfer; |
| int killed = 0; |
| USBEndpoint *ep = NULL; |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| assert(epid >= 1 && epid <= 31); |
| |
| DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid); |
| |
| slot = &xhci->slots[slotid-1]; |
| |
| if (!slot->eps[epid-1]) { |
| return 0; |
| } |
| |
| epctx = slot->eps[epid-1]; |
| |
| for (;;) { |
| xfer = QTAILQ_FIRST(&epctx->transfers); |
| if (xfer == NULL) { |
| break; |
| } |
| killed += xhci_ep_nuke_one_xfer(xfer, report); |
| if (killed) { |
| report = 0; /* Only report once */ |
| } |
| xhci_ep_free_xfer(xfer); |
| } |
| |
| ep = xhci_epid_to_usbep(epctx); |
| if (ep) { |
| usb_device_ep_stopped(ep->dev, ep); |
| } |
| return killed; |
| } |
| |
| static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| |
| trace_usb_xhci_ep_disable(slotid, epid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| assert(epid >= 1 && epid <= 31); |
| |
| slot = &xhci->slots[slotid-1]; |
| |
| if (!slot->eps[epid-1]) { |
| DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid); |
| return CC_SUCCESS; |
| } |
| |
| xhci_ep_nuke_xfers(xhci, slotid, epid, 0); |
| |
| epctx = slot->eps[epid-1]; |
| |
| if (epctx->nr_pstreams) { |
| xhci_free_streams(epctx); |
| } |
| |
| /* only touch guest RAM if we're not resetting the HC */ |
| if (xhci->dcbaap_low || xhci->dcbaap_high) { |
| xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED); |
| } |
| |
| timer_free(epctx->kick_timer); |
| g_free(epctx); |
| slot->eps[epid-1] = NULL; |
| |
| return CC_SUCCESS; |
| } |
| |
| static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| |
| trace_usb_xhci_ep_stop(slotid, epid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| if (epid < 1 || epid > 31) { |
| DPRINTF("xhci: bad ep %d\n", epid); |
| return CC_TRB_ERROR; |
| } |
| |
| slot = &xhci->slots[slotid-1]; |
| |
| if (!slot->eps[epid-1]) { |
| DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); |
| return CC_EP_NOT_ENABLED_ERROR; |
| } |
| |
| if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) { |
| DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, " |
| "data might be lost\n"); |
| } |
| |
| epctx = slot->eps[epid-1]; |
| |
| xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED); |
| |
| if (epctx->nr_pstreams) { |
| xhci_reset_streams(epctx); |
| } |
| |
| return CC_SUCCESS; |
| } |
| |
| static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| |
| trace_usb_xhci_ep_reset(slotid, epid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| if (epid < 1 || epid > 31) { |
| DPRINTF("xhci: bad ep %d\n", epid); |
| return CC_TRB_ERROR; |
| } |
| |
| slot = &xhci->slots[slotid-1]; |
| |
| if (!slot->eps[epid-1]) { |
| DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); |
| return CC_EP_NOT_ENABLED_ERROR; |
| } |
| |
| epctx = slot->eps[epid-1]; |
| |
| if (epctx->state != EP_HALTED) { |
| DPRINTF("xhci: reset EP while EP %d not halted (%d)\n", |
| epid, epctx->state); |
| return CC_CONTEXT_STATE_ERROR; |
| } |
| |
| if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) { |
| DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, " |
| "data might be lost\n"); |
| } |
| |
| if (!xhci->slots[slotid-1].uport || |
| !xhci->slots[slotid-1].uport->dev || |
| !xhci->slots[slotid-1].uport->dev->attached) { |
| return CC_USB_TRANSACTION_ERROR; |
| } |
| |
| xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED); |
| |
| if (epctx->nr_pstreams) { |
| xhci_reset_streams(epctx); |
| } |
| |
| return CC_SUCCESS; |
| } |
| |
| static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid, unsigned int streamid, |
| uint64_t pdequeue) |
| { |
| XHCISlot *slot; |
| XHCIEPContext *epctx; |
| XHCIStreamContext *sctx; |
| dma_addr_t dequeue; |
| |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| if (epid < 1 || epid > 31) { |
| DPRINTF("xhci: bad ep %d\n", epid); |
| return CC_TRB_ERROR; |
| } |
| |
| trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue); |
| dequeue = xhci_mask64(pdequeue); |
| |
| slot = &xhci->slots[slotid-1]; |
| |
| if (!slot->eps[epid-1]) { |
| DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); |
| return CC_EP_NOT_ENABLED_ERROR; |
| } |
| |
| epctx = slot->eps[epid-1]; |
| |
| if (epctx->state != EP_STOPPED) { |
| DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid); |
| return CC_CONTEXT_STATE_ERROR; |
| } |
| |
| if (epctx->nr_pstreams) { |
| uint32_t err; |
| sctx = xhci_find_stream(epctx, streamid, &err); |
| if (sctx == NULL) { |
| return err; |
| } |
| xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf); |
| sctx->ring.ccs = dequeue & 1; |
| } else { |
| sctx = NULL; |
| xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF); |
| epctx->ring.ccs = dequeue & 1; |
| } |
| |
| xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED); |
| |
| return CC_SUCCESS; |
| } |
| |
| static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer) |
| { |
| XHCIState *xhci = xfer->epctx->xhci; |
| int i; |
| |
| xfer->int_req = false; |
| qemu_sglist_init(&xfer->sgl, DEVICE(xhci), xfer->trb_count, xhci->as); |
| for (i = 0; i < xfer->trb_count; i++) { |
| XHCITRB *trb = &xfer->trbs[i]; |
| dma_addr_t addr; |
| unsigned int chunk = 0; |
| |
| if (trb->control & TRB_TR_IOC) { |
| xfer->int_req = true; |
| } |
| |
| switch (TRB_TYPE(*trb)) { |
| case TR_DATA: |
| if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) { |
| DPRINTF("xhci: data direction mismatch for TR_DATA\n"); |
| goto err; |
| } |
| /* fallthrough */ |
| case TR_NORMAL: |
| case TR_ISOCH: |
| addr = xhci_mask64(trb->parameter); |
| chunk = trb->status & 0x1ffff; |
| if (trb->control & TRB_TR_IDT) { |
| if (chunk > 8 || in_xfer) { |
| DPRINTF("xhci: invalid immediate data TRB\n"); |
| goto err; |
| } |
| qemu_sglist_add(&xfer->sgl, trb->addr, chunk); |
| } else { |
| qemu_sglist_add(&xfer->sgl, addr, chunk); |
| } |
| break; |
| } |
| } |
| |
| return 0; |
| |
| err: |
| qemu_sglist_destroy(&xfer->sgl); |
| xhci_die(xhci); |
| return -1; |
| } |
| |
| static void xhci_xfer_unmap(XHCITransfer *xfer) |
| { |
| usb_packet_unmap(&xfer->packet, &xfer->sgl); |
| qemu_sglist_destroy(&xfer->sgl); |
| } |
| |
| static void xhci_xfer_report(XHCITransfer *xfer) |
| { |
| uint32_t edtla = 0; |
| unsigned int left; |
| bool reported = 0; |
| bool shortpkt = 0; |
| XHCIEvent event = {ER_TRANSFER, CC_SUCCESS}; |
| XHCIState *xhci = xfer->epctx->xhci; |
| int i; |
| |
| left = xfer->packet.actual_length; |
| |
| for (i = 0; i < xfer->trb_count; i++) { |
| XHCITRB *trb = &xfer->trbs[i]; |
| unsigned int chunk = 0; |
| |
| switch (TRB_TYPE(*trb)) { |
| case TR_SETUP: |
| chunk = trb->status & 0x1ffff; |
| if (chunk > 8) { |
| chunk = 8; |
| } |
| break; |
| case TR_DATA: |
| case TR_NORMAL: |
| case TR_ISOCH: |
| chunk = trb->status & 0x1ffff; |
| if (chunk > left) { |
| chunk = left; |
| if (xfer->status == CC_SUCCESS) { |
| shortpkt = 1; |
| } |
| } |
| left -= chunk; |
| edtla += chunk; |
| break; |
| case TR_STATUS: |
| reported = 0; |
| shortpkt = 0; |
| break; |
| } |
| |
| if (!reported && ((trb->control & TRB_TR_IOC) || |
| (shortpkt && (trb->control & TRB_TR_ISP)) || |
| (xfer->status != CC_SUCCESS && left == 0))) { |
| event.slotid = xfer->epctx->slotid; |
| event.epid = xfer->epctx->epid; |
| event.length = (trb->status & 0x1ffff) - chunk; |
| event.flags = 0; |
| event.ptr = trb->addr; |
| if (xfer->status == CC_SUCCESS) { |
| event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS; |
| } else { |
| event.ccode = xfer->status; |
| } |
| if (TRB_TYPE(*trb) == TR_EVDATA) { |
| event.ptr = trb->parameter; |
| event.flags |= TRB_EV_ED; |
| event.length = edtla & 0xffffff; |
| DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length); |
| edtla = 0; |
| } |
| xhci_event(xhci, &event, TRB_INTR(*trb)); |
| reported = 1; |
| if (xfer->status != CC_SUCCESS) { |
| return; |
| } |
| } |
| |
| switch (TRB_TYPE(*trb)) { |
| case TR_SETUP: |
| reported = 0; |
| shortpkt = 0; |
| break; |
| } |
| |
| } |
| } |
| |
| static void xhci_stall_ep(XHCITransfer *xfer) |
| { |
| XHCIEPContext *epctx = xfer->epctx; |
| XHCIState *xhci = epctx->xhci; |
| uint32_t err; |
| XHCIStreamContext *sctx; |
| |
| if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) { |
| /* never halt isoch endpoints, 4.10.2 */ |
| return; |
| } |
| |
| if (epctx->nr_pstreams) { |
| sctx = xhci_find_stream(epctx, xfer->streamid, &err); |
| if (sctx == NULL) { |
| return; |
| } |
| sctx->ring.dequeue = xfer->trbs[0].addr; |
| sctx->ring.ccs = xfer->trbs[0].ccs; |
| xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED); |
| } else { |
| epctx->ring.dequeue = xfer->trbs[0].addr; |
| epctx->ring.ccs = xfer->trbs[0].ccs; |
| xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED); |
| } |
| } |
| |
| static int xhci_setup_packet(XHCITransfer *xfer) |
| { |
| USBEndpoint *ep; |
| int dir; |
| |
| dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT; |
| |
| if (xfer->packet.ep) { |
| ep = xfer->packet.ep; |
| } else { |
| ep = xhci_epid_to_usbep(xfer->epctx); |
| if (!ep) { |
| DPRINTF("xhci: slot %d has no device\n", |
| xfer->epctx->slotid); |
| return -1; |
| } |
| } |
| |
| xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */ |
| usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid, |
| xfer->trbs[0].addr, false, xfer->int_req); |
| if (usb_packet_map(&xfer->packet, &xfer->sgl)) { |
| qemu_sglist_destroy(&xfer->sgl); |
| return -1; |
| } |
| DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n", |
| xfer->packet.pid, ep->dev->addr, ep->nr); |
| return 0; |
| } |
| |
| static int xhci_try_complete_packet(XHCITransfer *xfer) |
| { |
| if (xfer->packet.status == USB_RET_ASYNC) { |
| trace_usb_xhci_xfer_async(xfer); |
| xfer->running_async = 1; |
| xfer->running_retry = 0; |
| xfer->complete = 0; |
| return 0; |
| } else if (xfer->packet.status == USB_RET_NAK) { |
| trace_usb_xhci_xfer_nak(xfer); |
| xfer->running_async = 0; |
| xfer->running_retry = 1; |
| xfer->complete = 0; |
| return 0; |
| } else { |
| xfer->running_async = 0; |
| xfer->running_retry = 0; |
| xfer->complete = 1; |
| xhci_xfer_unmap(xfer); |
| } |
| |
| if (xfer->packet.status == USB_RET_SUCCESS) { |
| trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length); |
| xfer->status = CC_SUCCESS; |
| xhci_xfer_report(xfer); |
| return 0; |
| } |
| |
| /* error */ |
| trace_usb_xhci_xfer_error(xfer, xfer->packet.status); |
| switch (xfer->packet.status) { |
| case USB_RET_NODEV: |
| case USB_RET_IOERROR: |
| xfer->status = CC_USB_TRANSACTION_ERROR; |
| xhci_xfer_report(xfer); |
| xhci_stall_ep(xfer); |
| break; |
| case USB_RET_STALL: |
| xfer->status = CC_STALL_ERROR; |
| xhci_xfer_report(xfer); |
| xhci_stall_ep(xfer); |
| break; |
| case USB_RET_BABBLE: |
| xfer->status = CC_BABBLE_DETECTED; |
| xhci_xfer_report(xfer); |
| xhci_stall_ep(xfer); |
| break; |
| default: |
| DPRINTF("%s: FIXME: status = %d\n", __func__, |
| xfer->packet.status); |
| FIXME("unhandled USB_RET_*"); |
| } |
| return 0; |
| } |
| |
| static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer) |
| { |
| XHCITRB *trb_setup, *trb_status; |
| uint8_t bmRequestType; |
| |
| trb_setup = &xfer->trbs[0]; |
| trb_status = &xfer->trbs[xfer->trb_count-1]; |
| |
| trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid, |
| xfer->epctx->epid, xfer->streamid); |
| |
| /* at most one Event Data TRB allowed after STATUS */ |
| if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) { |
| trb_status--; |
| } |
| |
| /* do some sanity checks */ |
| if (TRB_TYPE(*trb_setup) != TR_SETUP) { |
| DPRINTF("xhci: ep0 first TD not SETUP: %d\n", |
| TRB_TYPE(*trb_setup)); |
| return -1; |
| } |
| if (TRB_TYPE(*trb_status) != TR_STATUS) { |
| DPRINTF("xhci: ep0 last TD not STATUS: %d\n", |
| TRB_TYPE(*trb_status)); |
| return -1; |
| } |
| if (!(trb_setup->control & TRB_TR_IDT)) { |
| DPRINTF("xhci: Setup TRB doesn't have IDT set\n"); |
| return -1; |
| } |
| if ((trb_setup->status & 0x1ffff) != 8) { |
| DPRINTF("xhci: Setup TRB has bad length (%d)\n", |
| (trb_setup->status & 0x1ffff)); |
| return -1; |
| } |
| |
| bmRequestType = trb_setup->parameter; |
| |
| xfer->in_xfer = bmRequestType & USB_DIR_IN; |
| xfer->iso_xfer = false; |
| xfer->timed_xfer = false; |
| |
| if (xhci_setup_packet(xfer) < 0) { |
| return -1; |
| } |
| xfer->packet.parameter = trb_setup->parameter; |
| |
| usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); |
| xhci_try_complete_packet(xfer); |
| return 0; |
| } |
| |
| static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer, |
| XHCIEPContext *epctx, uint64_t mfindex) |
| { |
| uint64_t asap = ((mfindex + epctx->interval - 1) & |
| ~(epctx->interval-1)); |
| uint64_t kick = epctx->mfindex_last + epctx->interval; |
| |
| assert(epctx->interval != 0); |
| xfer->mfindex_kick = MAX(asap, kick); |
| } |
| |
| static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer, |
| XHCIEPContext *epctx, uint64_t mfindex) |
| { |
| if (xfer->trbs[0].control & TRB_TR_SIA) { |
| uint64_t asap = ((mfindex + epctx->interval - 1) & |
| ~(epctx->interval-1)); |
| if (asap >= epctx->mfindex_last && |
| asap <= epctx->mfindex_last + epctx->interval * 4) { |
| xfer->mfindex_kick = epctx->mfindex_last + epctx->interval; |
| } else { |
| xfer->mfindex_kick = asap; |
| } |
| } else { |
| xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT) |
| & TRB_TR_FRAMEID_MASK) << 3; |
| xfer->mfindex_kick |= mfindex & ~0x3fff; |
| if (xfer->mfindex_kick + 0x100 < mfindex) { |
| xfer->mfindex_kick += 0x4000; |
| } |
| } |
| } |
| |
| static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer, |
| XHCIEPContext *epctx, uint64_t mfindex) |
| { |
| if (xfer->mfindex_kick > mfindex) { |
| timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| (xfer->mfindex_kick - mfindex) * 125000); |
| xfer->running_retry = 1; |
| } else { |
| epctx->mfindex_last = xfer->mfindex_kick; |
| timer_del(epctx->kick_timer); |
| xfer->running_retry = 0; |
| } |
| } |
| |
| |
| static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx) |
| { |
| uint64_t mfindex; |
| |
| DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", epctx->slotid, epctx->epid); |
| |
| xfer->in_xfer = epctx->type>>2; |
| |
| switch(epctx->type) { |
| case ET_INTR_OUT: |
| case ET_INTR_IN: |
| xfer->pkts = 0; |
| xfer->iso_xfer = false; |
| xfer->timed_xfer = true; |
| mfindex = xhci_mfindex_get(xhci); |
| xhci_calc_intr_kick(xhci, xfer, epctx, mfindex); |
| xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); |
| if (xfer->running_retry) { |
| return -1; |
| } |
| break; |
| case ET_BULK_OUT: |
| case ET_BULK_IN: |
| xfer->pkts = 0; |
| xfer->iso_xfer = false; |
| xfer->timed_xfer = false; |
| break; |
| case ET_ISO_OUT: |
| case ET_ISO_IN: |
| xfer->pkts = 1; |
| xfer->iso_xfer = true; |
| xfer->timed_xfer = true; |
| mfindex = xhci_mfindex_get(xhci); |
| xhci_calc_iso_kick(xhci, xfer, epctx, mfindex); |
| xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); |
| if (xfer->running_retry) { |
| return -1; |
| } |
| break; |
| default: |
| trace_usb_xhci_unimplemented("endpoint type", epctx->type); |
| return -1; |
| } |
| |
| if (xhci_setup_packet(xfer) < 0) { |
| return -1; |
| } |
| usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); |
| xhci_try_complete_packet(xfer); |
| return 0; |
| } |
| |
| static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx) |
| { |
| trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid, |
| xfer->epctx->epid, xfer->streamid); |
| return xhci_submit(xhci, xfer, epctx); |
| } |
| |
| static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, |
| unsigned int epid, unsigned int streamid) |
| { |
| XHCIEPContext *epctx; |
| |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| assert(epid >= 1 && epid <= 31); |
| |
| if (!xhci->slots[slotid-1].enabled) { |
| DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid); |
| return; |
| } |
| epctx = xhci->slots[slotid-1].eps[epid-1]; |
| if (!epctx) { |
| DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n", |
| epid, slotid); |
| return; |
| } |
| |
| if (epctx->kick_active) { |
| return; |
| } |
| xhci_kick_epctx(epctx, streamid); |
| } |
| |
| static bool xhci_slot_ok(XHCIState *xhci, int slotid) |
| { |
| return (xhci->slots[slotid - 1].uport && |
| xhci->slots[slotid - 1].uport->dev && |
| xhci->slots[slotid - 1].uport->dev->attached); |
| } |
| |
| static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid) |
| { |
| XHCIState *xhci = epctx->xhci; |
| XHCIStreamContext *stctx = NULL; |
| XHCITransfer *xfer; |
| XHCIRing *ring; |
| USBEndpoint *ep = NULL; |
| uint64_t mfindex; |
| unsigned int count = 0; |
| int length; |
| int i; |
| |
| trace_usb_xhci_ep_kick(epctx->slotid, epctx->epid, streamid); |
| assert(!epctx->kick_active); |
| |
| /* If the device has been detached, but the guest has not noticed this |
| yet the 2 above checks will succeed, but we must NOT continue */ |
| if (!xhci_slot_ok(xhci, epctx->slotid)) { |
| return; |
| } |
| |
| if (epctx->retry) { |
| XHCITransfer *xfer = epctx->retry; |
| |
| trace_usb_xhci_xfer_retry(xfer); |
| assert(xfer->running_retry); |
| if (xfer->timed_xfer) { |
| /* time to kick the transfer? */ |
| mfindex = xhci_mfindex_get(xhci); |
| xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); |
| if (xfer->running_retry) { |
| return; |
| } |
| xfer->timed_xfer = 0; |
| xfer->running_retry = 1; |
| } |
| if (xfer->iso_xfer) { |
| /* retry iso transfer */ |
| if (xhci_setup_packet(xfer) < 0) { |
| return; |
| } |
| usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); |
| assert(xfer->packet.status != USB_RET_NAK); |
| xhci_try_complete_packet(xfer); |
| } else { |
| /* retry nak'ed transfer */ |
| if (xhci_setup_packet(xfer) < 0) { |
| return; |
| } |
| usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); |
| if (xfer->packet.status == USB_RET_NAK) { |
| xhci_xfer_unmap(xfer); |
| return; |
| } |
| xhci_try_complete_packet(xfer); |
| } |
| assert(!xfer->running_retry); |
| if (xfer->complete) { |
| /* update ring dequeue ptr */ |
| xhci_set_ep_state(xhci, epctx, stctx, epctx->state); |
| xhci_ep_free_xfer(epctx->retry); |
| } |
| epctx->retry = NULL; |
| } |
| |
| if (epctx->state == EP_HALTED) { |
| DPRINTF("xhci: ep halted, not running schedule\n"); |
| return; |
| } |
| |
| |
| if (epctx->nr_pstreams) { |
| uint32_t err; |
| stctx = xhci_find_stream(epctx, streamid, &err); |
| if (stctx == NULL) { |
| return; |
| } |
| ring = &stctx->ring; |
| xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING); |
| } else { |
| ring = &epctx->ring; |
| streamid = 0; |
| xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING); |
| } |
| if (!ring->dequeue) { |
| return; |
| } |
| |
| epctx->kick_active++; |
| while (1) { |
| length = xhci_ring_chain_length(xhci, ring); |
| if (length <= 0) { |
| if (epctx->type == ET_ISO_OUT || epctx->type == ET_ISO_IN) { |
| /* 4.10.3.1 */ |
| XHCIEvent ev = { ER_TRANSFER }; |
| ev.ccode = epctx->type == ET_ISO_IN ? |
| CC_RING_OVERRUN : CC_RING_UNDERRUN; |
| ev.slotid = epctx->slotid; |
| ev.epid = epctx->epid; |
| ev.ptr = epctx->ring.dequeue; |
| xhci_event(xhci, &ev, xhci->slots[epctx->slotid-1].intr); |
| } |
| break; |
| } |
| xfer = xhci_ep_alloc_xfer(epctx, length); |
| if (xfer == NULL) { |
| break; |
| } |
| |
| for (i = 0; i < length; i++) { |
| TRBType type; |
| type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL); |
| if (!type) { |
| xhci_die(xhci); |
| xhci_ep_free_xfer(xfer); |
| epctx->kick_active--; |
| return; |
| } |
| } |
| xfer->streamid = streamid; |
| |
| if (epctx->epid == 1) { |
| xhci_fire_ctl_transfer(xhci, xfer); |
| } else { |
| xhci_fire_transfer(xhci, xfer, epctx); |
| } |
| if (!xhci_slot_ok(xhci, epctx->slotid)) { |
| /* surprise removal -> stop processing */ |
| break; |
| } |
| if (xfer->complete) { |
| /* update ring dequeue ptr */ |
| xhci_set_ep_state(xhci, epctx, stctx, epctx->state); |
| xhci_ep_free_xfer(xfer); |
| xfer = NULL; |
| } |
| |
| if (epctx->state == EP_HALTED) { |
| break; |
| } |
| if (xfer != NULL && xfer->running_retry) { |
| DPRINTF("xhci: xfer nacked, stopping schedule\n"); |
| epctx->retry = xfer; |
| xhci_xfer_unmap(xfer); |
| break; |
| } |
| if (count++ > TRANSFER_LIMIT) { |
| trace_usb_xhci_enforced_limit("transfers"); |
| break; |
| } |
| } |
| epctx->kick_active--; |
| |
| ep = xhci_epid_to_usbep(epctx); |
| if (ep) { |
| usb_device_flush_ep_queue(ep->dev, ep); |
| } |
| } |
| |
| static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid) |
| { |
| trace_usb_xhci_slot_enable(slotid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| xhci->slots[slotid-1].enabled = 1; |
| xhci->slots[slotid-1].uport = NULL; |
| memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31); |
| |
| return CC_SUCCESS; |
| } |
| |
| static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid) |
| { |
| int i; |
| |
| trace_usb_xhci_slot_disable(slotid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| for (i = 1; i <= 31; i++) { |
| if (xhci->slots[slotid-1].eps[i-1]) { |
| xhci_disable_ep(xhci, slotid, i); |
| } |
| } |
| |
| xhci->slots[slotid-1].enabled = 0; |
| xhci->slots[slotid-1].addressed = 0; |
| xhci->slots[slotid-1].uport = NULL; |
| xhci->slots[slotid-1].intr = 0; |
| return CC_SUCCESS; |
| } |
| |
| static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx) |
| { |
| USBPort *uport; |
| char path[32]; |
| int i, pos, port; |
| |
| port = (slot_ctx[1]>>16) & 0xFF; |
| if (port < 1 || port > xhci->numports) { |
| return NULL; |
| } |
| port = xhci->ports[port-1].uport->index+1; |
| pos = snprintf(path, sizeof(path), "%d", port); |
| for (i = 0; i < 5; i++) { |
| port = (slot_ctx[0] >> 4*i) & 0x0f; |
| if (!port) { |
| break; |
| } |
| pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port); |
| } |
| |
| QTAILQ_FOREACH(uport, &xhci->bus.used, next) { |
| if (strcmp(uport->path, path) == 0) { |
| return uport; |
| } |
| } |
| return NULL; |
| } |
| |
| static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid, |
| uint64_t pictx, bool bsr) |
| { |
| XHCISlot *slot; |
| USBPort *uport; |
| USBDevice *dev; |
| dma_addr_t ictx, octx, dcbaap; |
| uint64_t poctx; |
| uint32_t ictl_ctx[2]; |
| uint32_t slot_ctx[4]; |
| uint32_t ep0_ctx[5]; |
| int i; |
| TRBCCode res; |
| |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high); |
| poctx = ldq_le_dma(xhci->as, dcbaap + 8 * slotid); |
| ictx = xhci_mask64(pictx); |
| octx = xhci_mask64(poctx); |
| |
| DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); |
| DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); |
| |
| xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); |
| |
| if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) { |
| DPRINTF("xhci: invalid input context control %08x %08x\n", |
| ictl_ctx[0], ictl_ctx[1]); |
| return CC_TRB_ERROR; |
| } |
| |
| xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx)); |
| xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx)); |
| |
| DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| |
| DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n", |
| ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); |
| |
| uport = xhci_lookup_uport(xhci, slot_ctx); |
| if (uport == NULL) { |
| DPRINTF("xhci: port not found\n"); |
| return CC_TRB_ERROR; |
| } |
| trace_usb_xhci_slot_address(slotid, uport->path); |
| |
| dev = uport->dev; |
| if (!dev || !dev->attached) { |
| DPRINTF("xhci: port %s not connected\n", uport->path); |
| return CC_USB_TRANSACTION_ERROR; |
| } |
| |
| for (i = 0; i < xhci->numslots; i++) { |
| if (i == slotid-1) { |
| continue; |
| } |
| if (xhci->slots[i].uport == uport) { |
| DPRINTF("xhci: port %s already assigned to slot %d\n", |
| uport->path, i+1); |
| return CC_TRB_ERROR; |
| } |
| } |
| |
| slot = &xhci->slots[slotid-1]; |
| slot->uport = uport; |
| slot->ctx = octx; |
| slot->intr = get_field(slot_ctx[2], TRB_INTR); |
| |
| /* Make sure device is in USB_STATE_DEFAULT state */ |
| usb_device_reset(dev); |
| if (bsr) { |
| slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT; |
| } else { |
| USBPacket p; |
| uint8_t buf[1]; |
| |
| slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid; |
| memset(&p, 0, sizeof(p)); |
| usb_packet_addbuf(&p, buf, sizeof(buf)); |
| usb_packet_setup(&p, USB_TOKEN_OUT, |
| usb_ep_get(dev, USB_TOKEN_OUT, 0), 0, |
| 0, false, false); |
| usb_device_handle_control(dev, &p, |
| DeviceOutRequest | USB_REQ_SET_ADDRESS, |
| slotid, 0, 0, NULL); |
| assert(p.status != USB_RET_ASYNC); |
| usb_packet_cleanup(&p); |
| } |
| |
| res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx); |
| |
| DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n", |
| ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); |
| |
| xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); |
| |
| xhci->slots[slotid-1].addressed = 1; |
| return res; |
| } |
| |
| |
| static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid, |
| uint64_t pictx, bool dc) |
| { |
| dma_addr_t ictx, octx; |
| uint32_t ictl_ctx[2]; |
| uint32_t slot_ctx[4]; |
| uint32_t islot_ctx[4]; |
| uint32_t ep_ctx[5]; |
| int i; |
| TRBCCode res; |
| |
| trace_usb_xhci_slot_configure(slotid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| ictx = xhci_mask64(pictx); |
| octx = xhci->slots[slotid-1].ctx; |
| |
| DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); |
| DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); |
| |
| if (dc) { |
| for (i = 2; i <= 31; i++) { |
| if (xhci->slots[slotid-1].eps[i-1]) { |
| xhci_disable_ep(xhci, slotid, i); |
| } |
| } |
| |
| xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); |
| slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT; |
| DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| |
| return CC_SUCCESS; |
| } |
| |
| xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); |
| |
| if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) { |
| DPRINTF("xhci: invalid input context control %08x %08x\n", |
| ictl_ctx[0], ictl_ctx[1]); |
| return CC_TRB_ERROR; |
| } |
| |
| xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx)); |
| xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| |
| if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) { |
| DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]); |
| return CC_CONTEXT_STATE_ERROR; |
| } |
| |
| xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]); |
| |
| for (i = 2; i <= 31; i++) { |
| if (ictl_ctx[0] & (1<<i)) { |
| xhci_disable_ep(xhci, slotid, i); |
| } |
| if (ictl_ctx[1] & (1<<i)) { |
| xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx)); |
| DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n", |
| i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2], |
| ep_ctx[3], ep_ctx[4]); |
| xhci_disable_ep(xhci, slotid, i); |
| res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx); |
| if (res != CC_SUCCESS) { |
| return res; |
| } |
| DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n", |
| i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2], |
| ep_ctx[3], ep_ctx[4]); |
| xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx)); |
| } |
| } |
| |
| res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]); |
| if (res != CC_SUCCESS) { |
| for (i = 2; i <= 31; i++) { |
| if (ictl_ctx[1] & (1u << i)) { |
| xhci_disable_ep(xhci, slotid, i); |
| } |
| } |
| return res; |
| } |
| |
| slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); |
| slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT; |
| slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT); |
| slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK << |
| SLOT_CONTEXT_ENTRIES_SHIFT); |
| DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| |
| xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| |
| return CC_SUCCESS; |
| } |
| |
| |
| static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid, |
| uint64_t pictx) |
| { |
| dma_addr_t ictx, octx; |
| uint32_t ictl_ctx[2]; |
| uint32_t iep0_ctx[5]; |
| uint32_t ep0_ctx[5]; |
| uint32_t islot_ctx[4]; |
| uint32_t slot_ctx[4]; |
| |
| trace_usb_xhci_slot_evaluate(slotid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| ictx = xhci_mask64(pictx); |
| octx = xhci->slots[slotid-1].ctx; |
| |
| DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); |
| DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); |
| |
| xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); |
| |
| if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) { |
| DPRINTF("xhci: invalid input context control %08x %08x\n", |
| ictl_ctx[0], ictl_ctx[1]); |
| return CC_TRB_ERROR; |
| } |
| |
| if (ictl_ctx[1] & 0x1) { |
| xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx)); |
| |
| DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n", |
| islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]); |
| |
| xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| |
| slot_ctx[1] &= ~0xFFFF; /* max exit latency */ |
| slot_ctx[1] |= islot_ctx[1] & 0xFFFF; |
| /* update interrupter target field */ |
| xhci->slots[slotid-1].intr = get_field(islot_ctx[2], TRB_INTR); |
| set_field(&slot_ctx[2], xhci->slots[slotid-1].intr, TRB_INTR); |
| |
| DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| |
| xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| } |
| |
| if (ictl_ctx[1] & 0x2) { |
| xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx)); |
| |
| DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n", |
| iep0_ctx[0], iep0_ctx[1], iep0_ctx[2], |
| iep0_ctx[3], iep0_ctx[4]); |
| |
| xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); |
| |
| ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/ |
| ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000; |
| |
| DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n", |
| ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); |
| |
| xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); |
| } |
| |
| return CC_SUCCESS; |
| } |
| |
| static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid) |
| { |
| uint32_t slot_ctx[4]; |
| dma_addr_t octx; |
| int i; |
| |
| trace_usb_xhci_slot_reset(slotid); |
| assert(slotid >= 1 && slotid <= xhci->numslots); |
| |
| octx = xhci->slots[slotid-1].ctx; |
| |
| DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); |
| |
| for (i = 2; i <= 31; i++) { |
| if (xhci->slots[slotid-1].eps[i-1]) { |
| xhci_disable_ep(xhci, slotid, i); |
| } |
| } |
| |
| xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); |
| slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT; |
| DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", |
| slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); |
| xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); |
| |
| return CC_SUCCESS; |
| } |
| |
| static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb) |
| { |
| unsigned int slotid; |
| slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK; |
| if (slotid < 1 || slotid > xhci->numslots) { |
| DPRINTF("xhci: bad slot id %d\n", slotid); |
| event->ccode = CC_TRB_ERROR; |
| return 0; |
| } else if (!xhci->slots[slotid-1].enabled) { |
| DPRINTF("xhci: slot id %d not enabled\n", slotid); |
| event->ccode = CC_SLOT_NOT_ENABLED_ERROR; |
| return 0; |
| } |
| return slotid; |
| } |
| |
| /* cleanup slot state on usb device detach */ |
| static void xhci_detach_slot(XHCIState *xhci, USBPort *uport) |
| { |
| int slot, ep; |
| |
| for (slot = 0; slot < xhci->numslots; slot++) { |
| if (xhci->slots[slot].uport == uport) { |
| break; |
| } |
| } |
| if (slot == xhci->numslots) { |
| return; |
| } |
| |
| for (ep = 0; ep < 31; ep++) { |
| if (xhci->slots[slot].eps[ep]) { |
| xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0); |
| } |
| } |
| xhci->slots[slot].uport = NULL; |
| } |
| |
| static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx) |
| { |
| dma_addr_t ctx; |
| uint8_t bw_ctx[xhci->numports+1]; |
| |
| DPRINTF("xhci_get_port_bandwidth()\n"); |
| |
| ctx = xhci_mask64(pctx); |
| |
| DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx); |
| |
| /* TODO: actually implement real values here */ |
| bw_ctx[0] = 0; |
| memset(&bw_ctx[1], 80, xhci->numports); /* 80% */ |
| dma_memory_write(xhci->as, ctx, bw_ctx, sizeof(bw_ctx)); |
| |
| return CC_SUCCESS; |
| } |
| |
| static uint32_t rotl(uint32_t v, unsigned count) |
| { |
| count &= 31; |
| return (v << count) | (v >> (32 - count)); |
| } |
| |
| |
| static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo) |
| { |
| uint32_t val; |
| val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F)); |
| val += rotl(lo + 0x49434878, hi & 0x1F); |
| val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F); |
| return ~val; |
| } |
| |
| static void xhci_process_commands(XHCIState *xhci) |
| { |
| XHCITRB trb; |
| TRBType type; |
| XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS}; |
| dma_addr_t addr; |
| unsigned int i, slotid = 0, count = 0; |
| |
| DPRINTF("xhci_process_commands()\n"); |
| if (!xhci_running(xhci)) { |
| DPRINTF("xhci_process_commands() called while xHC stopped or paused\n"); |
| return; |
| } |
| |
| xhci->crcr_low |= CRCR_CRR; |
| |
| while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) { |
| event.ptr = addr; |
| switch (type) { |
| case CR_ENABLE_SLOT: |
| for (i = 0; i < xhci->numslots; i++) { |
| if (!xhci->slots[i].enabled) { |
| break; |
| } |
| } |
| if (i >= xhci->numslots) { |
| DPRINTF("xhci: no device slots available\n"); |
| event.ccode = CC_NO_SLOTS_ERROR; |
| } else { |
| slotid = i+1; |
| event.ccode = xhci_enable_slot(xhci, slotid); |
| } |
| break; |
| case CR_DISABLE_SLOT: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| event.ccode = xhci_disable_slot(xhci, slotid); |
| } |
| break; |
| case CR_ADDRESS_DEVICE: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| event.ccode = xhci_address_slot(xhci, slotid, trb.parameter, |
| trb.control & TRB_CR_BSR); |
| } |
| break; |
| case CR_CONFIGURE_ENDPOINT: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter, |
| trb.control & TRB_CR_DC); |
| } |
| break; |
| case CR_EVALUATE_CONTEXT: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter); |
| } |
| break; |
| case CR_STOP_ENDPOINT: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) |
| & TRB_CR_EPID_MASK; |
| event.ccode = xhci_stop_ep(xhci, slotid, epid); |
| } |
| break; |
| case CR_RESET_ENDPOINT: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) |
| & TRB_CR_EPID_MASK; |
| event.ccode = xhci_reset_ep(xhci, slotid, epid); |
| } |
| break; |
| case CR_SET_TR_DEQUEUE: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) |
| & TRB_CR_EPID_MASK; |
| unsigned int streamid = (trb.status >> 16) & 0xffff; |
| event.ccode = xhci_set_ep_dequeue(xhci, slotid, |
| epid, streamid, |
| trb.parameter); |
| } |
| break; |
| case CR_RESET_DEVICE: |
| slotid = xhci_get_slot(xhci, &event, &trb); |
| if (slotid) { |
| event.ccode = xhci_reset_slot(xhci, slotid); |
| } |
| break; |
| case CR_GET_PORT_BANDWIDTH: |
| event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter); |
| break; |
| case CR_NOOP: |
| event.ccode = CC_SUCCESS; |
| break; |
| case CR_VENDOR_NEC_FIRMWARE_REVISION: |
| if (xhci->nec_quirks) { |
| event.type = 48; /* NEC reply */ |
| event.length = 0x3025; |
| } else { |
| event.ccode = CC_TRB_ERROR; |
| } |
| break; |
| case CR_VENDOR_NEC_CHALLENGE_RESPONSE: |
| if (xhci->nec_quirks) { |
| uint32_t chi = trb.parameter >> 32; |
| uint32_t clo = trb.parameter; |
| uint32_t val = xhci_nec_challenge(chi, clo); |
| event.length = val & 0xFFFF; |
| event.epid = val >> 16; |
| slotid = val >> 24; |
| event.type = 48; /* NEC reply */ |
| } else { |
| event.ccode = CC_TRB_ERROR; |
| } |
| break; |
| default: |
| trace_usb_xhci_unimplemented("command", type); |
| event.ccode = CC_TRB_ERROR; |
| break; |
| } |
| event.slotid = slotid; |
| xhci_event(xhci, &event, 0); |
| |
| if (count++ > COMMAND_LIMIT) { |
| trace_usb_xhci_enforced_limit("commands"); |
| return; |
| } |
| } |
| } |
| |
| static bool xhci_port_have_device(XHCIPort *port) |
| { |
| if (!port->uport->dev || !port->uport->dev->attached) { |
| return false; /* no device present */ |
| } |
| if (!((1 << port->uport->dev->speed) & port->speedmask)) { |
| return false; /* speed mismatch */ |
| } |
| return true; |
| } |
| |
| static void xhci_port_notify(XHCIPort *port, uint32_t bits) |
| { |
| XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS, |
| port->portnr << 24 }; |
| |
| if ((port->portsc & bits) == bits) { |
| return; |
| } |
| trace_usb_xhci_port_notify(port->portnr, bits); |
| port->portsc |= bits; |
| if (!xhci_running(port->xhci)) { |
| return; |
| } |
| xhci_event(port->xhci, &ev, 0); |
| } |
| |
| static void xhci_port_update(XHCIPort *port, int is_detach) |
| { |
| uint32_t pls = PLS_RX_DETECT; |
| |
| assert(port); |
| port->portsc = PORTSC_PP; |
| if (!is_detach && xhci_port_have_device(port)) { |
| port->portsc |= PORTSC_CCS; |
| switch (port->uport->dev->speed) { |
| case USB_SPEED_LOW: |
| port->portsc |= PORTSC_SPEED_LOW; |
| pls = PLS_POLLING; |
| break; |
| case USB_SPEED_FULL: |
| port->portsc |= PORTSC_SPEED_FULL; |
| pls = PLS_POLLING; |
| break; |
| case USB_SPEED_HIGH: |
| port->portsc |= PORTSC_SPEED_HIGH; |
| pls = PLS_POLLING; |
| break; |
| case USB_SPEED_SUPER: |
| port->portsc |= PORTSC_SPEED_SUPER; |
| port->portsc |= PORTSC_PED; |
| pls = PLS_U0; |
| break; |
| } |
| } |
| set_field(&port->portsc, pls, PORTSC_PLS); |
| trace_usb_xhci_port_link(port->portnr, pls); |
| xhci_port_notify(port, PORTSC_CSC); |
| } |
| |
| static void xhci_port_reset(XHCIPort *port, bool warm_reset) |
| { |
| trace_usb_xhci_port_reset(port->portnr, warm_reset); |
| |
| if (!xhci_port_have_device(port)) { |
| return; |
| } |
| |
| usb_device_reset(port->uport->dev); |
| |
| switch (port->uport->dev->speed) { |
| case USB_SPEED_SUPER: |
| if (warm_reset) { |
| port->portsc |= PORTSC_WRC; |
| } |
| /* fall through */ |
| case USB_SPEED_LOW: |
| case USB_SPEED_FULL: |
| case USB_SPEED_HIGH: |
| set_field(&port->portsc, PLS_U0, PORTSC_PLS); |
| trace_usb_xhci_port_link(port->portnr, PLS_U0); |
| port->portsc |= PORTSC_PED; |
| break; |
| } |
| |
| port->portsc &= ~PORTSC_PR; |
| xhci_port_notify(port, PORTSC_PRC); |
| } |
| |
| static void xhci_reset(DeviceState *dev) |
| { |
| XHCIState *xhci = XHCI(dev); |
| int i; |
| |
| trace_usb_xhci_reset(); |
| if (!(xhci->usbsts & USBSTS_HCH)) { |
| DPRINTF("xhci: reset while running!\n"); |
| } |
| |
| xhci->usbcmd = 0; |
| xhci->usbsts = USBSTS_HCH; |
| xhci->dnctrl = 0; |
| xhci->crcr_low = 0; |
| xhci->crcr_high = 0; |
| xhci->dcbaap_low = 0; |
| xhci->dcbaap_high = 0; |
| xhci->config = 0; |
| |
| for (i = 0; i < xhci->numslots; i++) { |
| xhci_disable_slot(xhci, i+1); |
| } |
| |
| for (i = 0; i < xhci->numports; i++) { |
| xhci_port_update(xhci->ports + i, 0); |
| } |
| |
| for (i = 0; i < xhci->numintrs; i++) { |
| xhci->intr[i].iman = 0; |
| xhci->intr[i].imod = 0; |
| xhci->intr[i].erstsz = 0; |
| xhci->intr[i].erstba_low = 0; |
| xhci->intr[i].erstba_high = 0; |
| xhci->intr[i].erdp_low = 0; |
| xhci->intr[i].erdp_high = 0; |
| |
| xhci->intr[i].er_ep_idx = 0; |
| xhci->intr[i].er_pcs = 1; |
| xhci->intr[i].ev_buffer_put = 0; |
| xhci->intr[i].ev_buffer_get = 0; |
| } |
| |
| xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| xhci_mfwrap_update(xhci); |
| } |
| |
| static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size) |
| { |
| XHCIState *xhci = ptr; |
| uint32_t ret; |
| |
| switch (reg) { |
| case 0x00: /* HCIVERSION, CAPLENGTH */ |
| ret = 0x01000000 | LEN_CAP; |
| break; |
| case 0x04: /* HCSPARAMS 1 */ |
| ret = ((xhci->numports_2+xhci->numports_3)<<24) |
| | (xhci->numintrs<<8) | xhci->numslots; |
| break; |
| case 0x08: /* HCSPARAMS 2 */ |
| ret = 0x0000000f; |
| break; |
| case 0x0c: /* HCSPARAMS 3 */ |
| ret = 0x00000000; |
| break; |
| case 0x10: /* HCCPARAMS */ |
| if (sizeof(dma_addr_t) == 4) { |
| ret = 0x00080000 | (xhci->max_pstreams_mask << 12); |
| } else { |
| ret = 0x00080001 | (xhci->max_pstreams_mask << 12); |
| } |
| break; |
| case 0x14: /* DBOFF */ |
| ret = OFF_DOORBELL; |
| break; |
| case 0x18: /* RTSOFF */ |
| ret = OFF_RUNTIME; |
| break; |
| |
| /* extended capabilities */ |
| case 0x20: /* Supported Protocol:00 */ |
| ret = 0x02000402; /* USB 2.0 */ |
| break; |
| case 0x24: /* Supported Protocol:04 */ |
| ret = 0x20425355; /* "USB " */ |
| break; |
| case 0x28: /* Supported Protocol:08 */ |
| if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { |
| ret = (xhci->numports_2<<8) | (xhci->numports_3+1); |
| } else { |
| ret = (xhci->numports_2<<8) | 1; |
| } |
| break; |
| case 0x2c: /* Supported Protocol:0c */ |
| ret = 0x00000000; /* reserved */ |
| break; |
| case 0x30: /* Supported Protocol:00 */ |
| ret = 0x03000002; /* USB 3.0 */ |
| break; |
| case 0x34: /* Supported Protocol:04 */ |
| ret = 0x20425355; /* "USB " */ |
| break; |
| case 0x38: /* Supported Protocol:08 */ |
| if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { |
| ret = (xhci->numports_3<<8) | 1; |
| } else { |
| ret = (xhci->numports_3<<8) | (xhci->numports_2+1); |
| } |
| break; |
| case 0x3c: /* Supported Protocol:0c */ |
| ret = 0x00000000; /* reserved */ |
| break; |
| default: |
| trace_usb_xhci_unimplemented("cap read", reg); |
| ret = 0; |
| } |
| |
| trace_usb_xhci_cap_read(reg, ret); |
| return ret; |
| } |
| |
| static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size) |
| { |
| XHCIPort *port = ptr; |
| uint32_t ret; |
| |
| switch (reg) { |
| case 0x00: /* PORTSC */ |
| ret = port->portsc; |
| break; |
| case 0x04: /* PORTPMSC */ |
| case 0x08: /* PORTLI */ |
| ret = 0; |
| break; |
| case 0x0c: /* reserved */ |
| default: |
| trace_usb_xhci_unimplemented("port read", reg); |
| ret = 0; |
| } |
| |
| trace_usb_xhci_port_read(port->portnr, reg, ret); |
| return ret; |
| } |
| |
| static void xhci_port_write(void *ptr, hwaddr reg, |
| uint64_t val, unsigned size) |
| { |
| XHCIPort *port = ptr; |
| uint32_t portsc, notify; |
| |
| trace_usb_xhci_port_write(port->portnr, reg, val); |
| |
| switch (reg) { |
| case 0x00: /* PORTSC */ |
| /* write-1-to-start bits */ |
| if (val & PORTSC_WPR) { |
| xhci_port_reset(port, true); |
| break; |
| } |
| if (val & PORTSC_PR) { |
| xhci_port_reset(port, false); |
| break; |
| } |
| |
| portsc = port->portsc; |
| notify = 0; |
| /* write-1-to-clear bits*/ |
| portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC| |
| PORTSC_PRC|PORTSC_PLC|PORTSC_CEC)); |
| if (val & PORTSC_LWS) { |
| /* overwrite PLS only when LWS=1 */ |
| uint32_t old_pls = get_field(port->portsc, PORTSC_PLS); |
|