diff options
Diffstat (limited to 'sys/dev/usb/controller/xhci.c')
| -rw-r--r-- | sys/dev/usb/controller/xhci.c | 3862 |
1 files changed, 3862 insertions, 0 deletions
diff --git a/sys/dev/usb/controller/xhci.c b/sys/dev/usb/controller/xhci.c new file mode 100644 index 0000000..81c9704 --- /dev/null +++ b/sys/dev/usb/controller/xhci.c @@ -0,0 +1,3862 @@ +/*- + * Copyright (c) 2010 Hans Petter Selasky. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * USB eXtensible Host Controller Interface, a.k.a. USB 3.0 controller. + * + * The XHCI 1.0 spec can be found at + * http://www.intel.com/technology/usb/download/xHCI_Specification_for_USB.pdf + * and the USB 3.0 spec at + * http://www.usb.org/developers/docs/usb_30_spec_060910.zip + */ + +/* + * A few words about the design implementation: This driver emulates + * the concept about TDs which is found in EHCI specification. This + * way we avoid too much diveration among USB drivers. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/stdint.h> +#include <sys/stddef.h> +#include <sys/param.h> +#include <sys/queue.h> +#include <sys/types.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/bus.h> +#include <sys/linker_set.h> +#include <sys/module.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/condvar.h> +#include <sys/sysctl.h> +#include <sys/sx.h> +#include <sys/unistd.h> +#include <sys/callout.h> +#include <sys/malloc.h> +#include <sys/priv.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> + +#define USB_DEBUG_VAR xhcidebug + +#include <dev/usb/usb_core.h> +#include <dev/usb/usb_debug.h> +#include <dev/usb/usb_busdma.h> +#include <dev/usb/usb_process.h> +#include <dev/usb/usb_transfer.h> +#include <dev/usb/usb_device.h> +#include <dev/usb/usb_hub.h> +#include <dev/usb/usb_util.h> + +#include <dev/usb/usb_controller.h> +#include <dev/usb/usb_bus.h> +#include <dev/usb/controller/xhci.h> +#include <dev/usb/controller/xhcireg.h> + +#define XHCI_BUS2SC(bus) \ + ((struct xhci_softc *)(((uint8_t *)(bus)) - \ + ((uint8_t *)&(((struct xhci_softc *)0)->sc_bus)))) + +#ifdef USB_DEBUG +static int xhcidebug = 0; + +SYSCTL_NODE(_hw_usb, OID_AUTO, xhci, CTLFLAG_RW, 0, "USB XHCI"); +SYSCTL_INT(_hw_usb_xhci, OID_AUTO, debug, CTLFLAG_RW, + &xhcidebug, 0, "Debug level"); + +TUNABLE_INT("hw.usb.xhci.debug", &xhcidebug); + +#endif + +#define XHCI_INTR_ENDPT 1 + +struct xhci_std_temp { + struct xhci_softc *sc; + struct usb_page_cache *pc; + struct xhci_td *td; + struct xhci_td *td_next; + uint32_t len; + uint32_t offset; + uint32_t max_packet_size; + uint32_t average; + uint16_t isoc_delta; + uint16_t isoc_frame; + uint8_t shortpkt; + uint8_t multishort; + uint8_t last_frame; + uint8_t trb_type; + uint8_t direction; + uint8_t tbc; + uint8_t tlbpc; + uint8_t step_td; +}; + +static void xhci_do_poll(struct usb_bus *); +static void xhci_device_done(struct usb_xfer *, usb_error_t); +static void xhci_root_intr(struct xhci_softc *); +static void xhci_free_device_ext(struct usb_device *); +static struct xhci_endpoint_ext *xhci_get_endpoint_ext(struct usb_device *, + struct usb_endpoint_descriptor *); +static usb_proc_callback_t xhci_configure_msg; +static usb_error_t xhci_configure_device(struct usb_device *); +static usb_error_t xhci_configure_endpoint(struct usb_device *, + struct usb_endpoint_descriptor *, uint64_t, uint16_t, + uint8_t, uint8_t, uint8_t, uint16_t, uint16_t); +static usb_error_t xhci_configure_mask(struct usb_device *, + uint32_t, uint8_t); +static usb_error_t xhci_cmd_evaluate_ctx(struct xhci_softc *, + uint64_t, uint8_t); +static void xhci_endpoint_doorbell(struct usb_xfer *); + +extern struct usb_bus_methods xhci_bus_methods; + +#ifdef USB_DEBUG +static void +xhci_dump_trb(struct xhci_trb *trb) +{ + DPRINTFN(5, "trb = %p\n", trb); + DPRINTFN(5, "qwTrb0 = 0x%016llx\n", (long long)le64toh(trb->qwTrb0)); + DPRINTFN(5, "dwTrb2 = 0x%08x\n", le32toh(trb->dwTrb2)); + DPRINTFN(5, "dwTrb3 = 0x%08x\n", le32toh(trb->dwTrb3)); +} + +static void +xhci_dump_endpoint(struct xhci_endp_ctx *pep) +{ + DPRINTFN(5, "pep = %p\n", pep); + DPRINTFN(5, "dwEpCtx0=0x%08x\n", pep->dwEpCtx0); + DPRINTFN(5, "dwEpCtx1=0x%08x\n", pep->dwEpCtx1); + DPRINTFN(5, "qwEpCtx2=0x%016llx\n", (long long)pep->qwEpCtx2); + DPRINTFN(5, "dwEpCtx4=0x%08x\n", pep->dwEpCtx4); + DPRINTFN(5, "dwEpCtx5=0x%08x\n", pep->dwEpCtx5); + DPRINTFN(5, "dwEpCtx6=0x%08x\n", pep->dwEpCtx6); + DPRINTFN(5, "dwEpCtx7=0x%08x\n", pep->dwEpCtx7); +} + +static void +xhci_dump_device(struct xhci_slot_ctx *psl) +{ + DPRINTFN(5, "psl = %p\n", psl); + DPRINTFN(5, "dwSctx0=0x%08x\n", psl->dwSctx0); + DPRINTFN(5, "dwSctx1=0x%08x\n", psl->dwSctx1); + DPRINTFN(5, "dwSctx2=0x%08x\n", psl->dwSctx2); + DPRINTFN(5, "dwSctx3=0x%08x\n", psl->dwSctx3); +} +#endif + +static void +xhci_iterate_hw_softc(struct usb_bus *bus, usb_bus_mem_sub_cb_t *cb) +{ + struct xhci_softc *sc = XHCI_BUS2SC(bus); + uint8_t i; + + cb(bus, &sc->sc_hw.root_pc, &sc->sc_hw.root_pg, + sizeof(struct xhci_hw_root), XHCI_PAGE_SIZE); + + cb(bus, &sc->sc_hw.ctx_pc, &sc->sc_hw.ctx_pg, + sizeof(struct xhci_dev_ctx_addr), XHCI_PAGE_SIZE); + + for (i = 0; i != XHCI_MAX_SCRATCHPADS; i++) { + cb(bus, &sc->sc_hw.scratch_pc[i], &sc->sc_hw.scratch_pg[i], + XHCI_PAGE_SIZE, XHCI_PAGE_SIZE); + } +} + +usb_error_t +xhci_start_controller(struct xhci_softc *sc) +{ + struct usb_page_search buf_res; + struct xhci_hw_root *phwr; + struct xhci_dev_ctx_addr *pdctxa; + uint64_t addr; + uint32_t temp; + uint16_t i; + + DPRINTF("\n"); + + sc->sc_capa_off = 0; + sc->sc_oper_off = XREAD1(sc, capa, XHCI_CAPLENGTH); + sc->sc_runt_off = XREAD4(sc, capa, XHCI_RTSOFF) & ~0x1F; + sc->sc_door_off = XREAD4(sc, capa, XHCI_DBOFF) & ~0x3; + + DPRINTF("CAPLENGTH=0x%x\n", sc->sc_oper_off); + DPRINTF("RUNTIMEOFFSET=0x%x\n", sc->sc_runt_off); + DPRINTF("DOOROFFSET=0x%x\n", sc->sc_door_off); + + sc->sc_event_ccs = 1; + sc->sc_event_idx = 0; + sc->sc_command_ccs = 1; + sc->sc_command_idx = 0; + + DPRINTF("xHCI version = 0x%04x\n", XREAD2(sc, capa, XHCI_HCIVERSION)); + + temp = XREAD4(sc, capa, XHCI_HCSPARAMS0); + + DPRINTF("HCS0 = 0x%08x\n", temp); + + if (XHCI_HCS0_CSZ(temp)) { + device_printf(sc->sc_bus.parent, "Driver does not " + "support 64-byte contexts."); + return (USB_ERR_IOERROR); + } + + /* Reset controller */ + XWRITE4(sc, oper, XHCI_USBCMD, XHCI_CMD_HCRST); + + for (i = 0; i != 100; i++) { + usb_pause_mtx(NULL, hz / 1000); + temp = XREAD4(sc, oper, XHCI_USBCMD) & + (XHCI_CMD_HCRST | XHCI_STS_CNR); + if (!temp) + break; + } + + if (temp) { + device_printf(sc->sc_bus.parent, "Controller " + "reset timeout.\n"); + return (USB_ERR_IOERROR); + } + + if (!(XREAD4(sc, oper, XHCI_PAGESIZE) & XHCI_PAGESIZE_4K)) { + device_printf(sc->sc_bus.parent, "Controller does " + "not support 4K page size.\n"); + return (USB_ERR_IOERROR); + } + + temp = XREAD4(sc, capa, XHCI_HCSPARAMS1); + + i = XHCI_HCS1_N_PORTS(temp); + + if (i == 0) { + device_printf(sc->sc_bus.parent, "Invalid number " + "of ports: %u\n", i); + return (USB_ERR_IOERROR); + } + + sc->sc_noport = i; + sc->sc_noslot = XHCI_HCS1_DEVSLOT_MAX(temp); + + if (sc->sc_noslot > XHCI_MAX_DEVICES) + sc->sc_noslot = XHCI_MAX_DEVICES; + + /* setup number of device slots */ + + DPRINTF("CONFIG=0x%08x -> 0x%08x\n", + XREAD4(sc, oper, XHCI_CONFIG), sc->sc_noslot); + + XWRITE4(sc, oper, XHCI_CONFIG, sc->sc_noslot); + + DPRINTF("Max slots: %u\n", sc->sc_noslot); + + temp = XREAD4(sc, capa, XHCI_HCSPARAMS2); + + sc->sc_noscratch = XHCI_HCS2_SPB_MAX(temp); + + if (sc->sc_noscratch > XHCI_MAX_SCRATCHPADS) { + device_printf(sc->sc_bus.parent, "XHCI request " + "too many scratchpads\n"); + return (USB_ERR_NOMEM); + } + + DPRINTF("Max scratch: %u\n", sc->sc_noscratch); + + temp = XREAD4(sc, capa, XHCI_HCSPARAMS3); + + sc->sc_exit_lat_max = XHCI_HCS3_U1_DEL(temp) + + XHCI_HCS3_U2_DEL(temp) + 250 /* us */; + + temp = XREAD4(sc, oper, XHCI_USBSTS); + + /* clear interrupts */ + XWRITE4(sc, oper, XHCI_USBSTS, temp); + /* disable all device notifications */ + XWRITE4(sc, oper, XHCI_DNCTRL, 0); + + /* setup device context base address */ + usbd_get_page(&sc->sc_hw.ctx_pc, 0, &buf_res); + pdctxa = buf_res.buffer; + memset(pdctxa, 0, sizeof(*pdctxa)); + + addr = buf_res.physaddr; + addr += (uintptr_t)&((struct xhci_dev_ctx_addr *)0)->qwSpBufPtr[0]; + + /* slot 0 points to the table of scratchpad pointers */ + pdctxa->qwBaaDevCtxAddr[0] = htole64(addr); + + for (i = 0; i != sc->sc_noscratch; i++) { + struct usb_page_search buf_scp; + usbd_get_page(&sc->sc_hw.scratch_pc[i], 0, &buf_scp); + pdctxa->qwSpBufPtr[i] = htole64((uint64_t)buf_scp.physaddr); + } + + addr = buf_res.physaddr; + + XWRITE4(sc, oper, XHCI_DCBAAP_LO, (uint32_t)addr); + XWRITE4(sc, oper, XHCI_DCBAAP_HI, (uint32_t)(addr >> 32)); + XWRITE4(sc, oper, XHCI_DCBAAP_LO, (uint32_t)addr); + XWRITE4(sc, oper, XHCI_DCBAAP_HI, (uint32_t)(addr >> 32)); + + /* Setup event table size */ + + temp = XREAD4(sc, capa, XHCI_HCSPARAMS2); + + DPRINTF("HCS2=0x%08x\n", temp); + + temp = XHCI_HCS2_ERST_MAX(temp); + temp = 1U << temp; + if (temp > XHCI_MAX_RSEG) + temp = XHCI_MAX_RSEG; + + sc->sc_erst_max = temp; + + DPRINTF("ERSTSZ=0x%08x -> 0x%08x\n", + XREAD4(sc, runt, XHCI_ERSTSZ(0)), temp); + + XWRITE4(sc, runt, XHCI_ERSTSZ(0), XHCI_ERSTS_SET(temp)); + + /* Setup interrupt rate */ + XWRITE4(sc, runt, XHCI_IMOD(0), XHCI_IMOD_DEFAULT); + + usbd_get_page(&sc->sc_hw.root_pc, 0, &buf_res); + + phwr = buf_res.buffer; + addr = buf_res.physaddr; + addr += (uintptr_t)&((struct xhci_hw_root *)0)->hwr_events[0]; + + /* reset hardware root structure */ + memset(phwr, 0, sizeof(*phwr)); + + phwr->hwr_ring_seg[0].qwEvrsTablePtr = htole64(addr); + phwr->hwr_ring_seg[0].dwEvrsTableSize = htole32(XHCI_MAX_EVENTS); + + DPRINTF("ERDP(0)=0x%016llx\n", (unsigned long long)addr); + + XWRITE4(sc, runt, XHCI_ERDP_LO(0), (uint32_t)addr); + XWRITE4(sc, runt, XHCI_ERDP_HI(0), (uint32_t)(addr >> 32)); + + addr = (uint64_t)buf_res.physaddr; + + DPRINTF("ERSTBA(0)=0x%016llx\n", (unsigned long long)addr); + + XWRITE4(sc, runt, XHCI_ERSTBA_LO(0), (uint32_t)addr); + XWRITE4(sc, runt, XHCI_ERSTBA_HI(0), (uint32_t)(addr >> 32)); + + /* Setup interrupter registers */ + + temp = XREAD4(sc, runt, XHCI_IMAN(0)); + temp |= XHCI_IMAN_INTR_ENA; + XWRITE4(sc, runt, XHCI_IMAN(0), temp); + + /* setup command ring control base address */ + addr = buf_res.physaddr; + addr += (uintptr_t)&((struct xhci_hw_root *)0)->hwr_commands[0]; + + DPRINTF("CRCR=0x%016llx\n", (unsigned long long)addr); + + XWRITE4(sc, oper, XHCI_CRCR_LO, ((uint32_t)addr) | XHCI_CRCR_LO_RCS); + XWRITE4(sc, oper, XHCI_CRCR_HI, (uint32_t)(addr >> 32)); + + phwr->hwr_commands[XHCI_MAX_COMMANDS - 1].qwTrb0 = htole64(addr); + + usb_bus_mem_flush_all(&sc->sc_bus, &xhci_iterate_hw_softc); + + /* Go! */ + XWRITE4(sc, oper, XHCI_USBCMD, XHCI_CMD_RS | + XHCI_CMD_INTE | XHCI_CMD_HSEE); + + for (i = 0; i != 100; i++) { + usb_pause_mtx(NULL, hz / 1000); + temp = XREAD4(sc, oper, XHCI_USBSTS) & XHCI_STS_HCH; + if (!temp) + break; + } + if (temp) { + XWRITE4(sc, oper, XHCI_USBCMD, 0); + device_printf(sc->sc_bus.parent, "Run timeout.\n"); + return (USB_ERR_IOERROR); + } + + /* catch any lost interrupts */ + xhci_do_poll(&sc->sc_bus); + + return (0); +} + +usb_error_t +xhci_halt_controller(struct xhci_softc *sc) +{ + uint32_t temp; + uint16_t i; + + DPRINTF("\n"); + + sc->sc_capa_off = 0; + sc->sc_oper_off = XREAD1(sc, capa, XHCI_CAPLENGTH); + sc->sc_runt_off = XREAD4(sc, capa, XHCI_RTSOFF) & ~0xF; + sc->sc_door_off = XREAD4(sc, capa, XHCI_DBOFF) & ~0x3; + + /* Halt controller */ + XWRITE4(sc, oper, XHCI_USBCMD, 0); + + for (i = 0; i != 100; i++) { + usb_pause_mtx(NULL, hz / 1000); + temp = XREAD4(sc, oper, XHCI_USBSTS) & XHCI_STS_HCH; + if (temp) + break; + } + + if (!temp) { + device_printf(sc->sc_bus.parent, "Controller halt timeout.\n"); + return (USB_ERR_IOERROR); + } + return (0); +} + +usb_error_t +xhci_init(struct xhci_softc *sc, device_t self) +{ + /* initialise some bus fields */ + sc->sc_bus.parent = self; + + /* set the bus revision */ + sc->sc_bus.usbrev = USB_REV_3_0; + + /* set up the bus struct */ + sc->sc_bus.methods = &xhci_bus_methods; + + /* setup devices array */ + sc->sc_bus.devices = sc->sc_devices; + sc->sc_bus.devices_max = XHCI_MAX_DEVICES; + + /* setup command queue mutex and condition varible */ + cv_init(&sc->sc_cmd_cv, "CMDQ"); + sx_init(&sc->sc_cmd_sx, "CMDQ lock"); + + /* get all DMA memory */ + if (usb_bus_mem_alloc_all(&sc->sc_bus, + USB_GET_DMA_TAG(self), &xhci_iterate_hw_softc)) { + return (ENOMEM); + } + + sc->sc_config_msg[0].hdr.pm_callback = &xhci_configure_msg; + sc->sc_config_msg[0].bus = &sc->sc_bus; + sc->sc_config_msg[1].hdr.pm_callback = &xhci_configure_msg; + sc->sc_config_msg[1].bus = &sc->sc_bus; + + if (usb_proc_create(&sc->sc_config_proc, + &sc->sc_bus.bus_mtx, device_get_nameunit(self), USB_PRI_MED)) { + printf("WARNING: Creation of XHCI configure " + "callback process failed.\n"); + } + return (0); +} + +void +xhci_uninit(struct xhci_softc *sc) +{ + usb_proc_free(&sc->sc_config_proc); + + usb_bus_mem_free_all(&sc->sc_bus, &xhci_iterate_hw_softc); + + cv_destroy(&sc->sc_cmd_cv); + sx_destroy(&sc->sc_cmd_sx); +} + +void +xhci_suspend(struct xhci_softc *sc) +{ + /* XXX TODO */ +} + +void +xhci_resume(struct xhci_softc *sc) +{ + /* XXX TODO */ +} + +void +xhci_shutdown(struct xhci_softc *sc) +{ + DPRINTF("Stopping the XHCI\n"); + + xhci_halt_controller(sc); +} + +static usb_error_t +xhci_generic_done_sub(struct usb_xfer *xfer) +{ + struct xhci_td *td; + struct xhci_td *td_alt_next; + uint32_t len; + uint8_t status; + + td = xfer->td_transfer_cache; + td_alt_next = td->alt_next; + + if (xfer->aframes != xfer->nframes) + usbd_xfer_set_frame_len(xfer, xfer->aframes, 0); + + while (1) { + + usb_pc_cpu_invalidate(td->page_cache); + + status = td->status; + len = td->remainder; + + DPRINTFN(4, "xfer=%p[%u/%u] rem=%u/%u status=%u\n", + xfer, (unsigned int)xfer->aframes, + (unsigned int)xfer->nframes, + (unsigned int)len, (unsigned int)td->len, + (unsigned int)status); + + /* + * Verify the status length and + * add the length to "frlengths[]": + */ + if (len > td->len) { + /* should not happen */ + DPRINTF("Invalid status length, " + "0x%04x/0x%04x bytes\n", len, td->len); + status = XHCI_TRB_ERROR_LENGTH; + } else if (xfer->aframes != xfer->nframes) { + xfer->frlengths[xfer->aframes] += td->len - len; + } + /* Check for last transfer */ + if (((void *)td) == xfer->td_transfer_last) { + td = NULL; + break; + } + /* Check for transfer error */ + if (status != XHCI_TRB_ERROR_SHORT_PKT && + status != XHCI_TRB_ERROR_SUCCESS) { + /* the transfer is finished */ + td = NULL; + break; + } + /* Check for short transfer */ + if (len > 0) { + if (xfer->flags_int.short_frames_ok || + xfer->flags_int.isochronous_xfr || + xfer->flags_int.control_xfr) { + /* follow alt next */ + td = td->alt_next; + } else { + /* the transfer is finished */ + td = NULL; + } + break; + } + td = td->obj_next; + + if (td->alt_next != td_alt_next) { + /* this USB frame is complete */ + break; + } + } + + /* update transfer cache */ + + xfer->td_transfer_cache = td; + + return ((status == XHCI_TRB_ERROR_STALL) ? USB_ERR_STALLED : + (status != XHCI_TRB_ERROR_SHORT_PKT && + status != XHCI_TRB_ERROR_SUCCESS) ? USB_ERR_IOERROR : + USB_ERR_NORMAL_COMPLETION); +} + +static void +xhci_generic_done(struct usb_xfer *xfer) +{ + usb_error_t err = 0; + + DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n", + xfer, xfer->endpoint); + + /* reset scanner */ + + xfer->td_transfer_cache = xfer->td_transfer_first; + + if (xfer->flags_int.control_xfr) { + + if (xfer->flags_int.control_hdr) + err = xhci_generic_done_sub(xfer); + + xfer->aframes = 1; + + if (xfer->td_transfer_cache == NULL) + goto done; + } + + while (xfer->aframes != xfer->nframes) { + + err = xhci_generic_done_sub(xfer); + xfer->aframes++; + + if (xfer->td_transfer_cache == NULL) + goto done; + } + + if (xfer->flags_int.control_xfr && + !xfer->flags_int.control_act) + err = xhci_generic_done_sub(xfer); +done: + /* transfer is complete */ + xhci_device_done(xfer, err); +} + +static void +xhci_activate_transfer(struct usb_xfer *xfer) +{ + struct xhci_td *td; + + td = xfer->td_transfer_cache; + + usb_pc_cpu_invalidate(td->page_cache); + + if (!(td->td_trb[0].dwTrb3 & htole32(XHCI_TRB_3_CYCLE_BIT))) { + + /* activate the transfer */ + + td->td_trb[0].dwTrb3 |= htole32(XHCI_TRB_3_CYCLE_BIT); + usb_pc_cpu_flush(td->page_cache); + + xhci_endpoint_doorbell(xfer); + } +} + +static void +xhci_skip_transfer(struct usb_xfer *xfer) +{ + struct xhci_td *td; + struct xhci_td *td_last; + + td = xfer->td_transfer_cache; + td_last = xfer->td_transfer_last; + + td = td->alt_next; + + usb_pc_cpu_invalidate(td->page_cache); + + if (!(td->td_trb[0].dwTrb3 & htole32(XHCI_TRB_3_CYCLE_BIT))) { + + usb_pc_cpu_invalidate(td_last->page_cache); + + /* copy LINK TRB to current waiting location */ + + td->td_trb[0].qwTrb0 = td_last->td_trb[td_last->ntrb].qwTrb0; + td->td_trb[0].dwTrb2 = td_last->td_trb[td_last->ntrb].dwTrb2; + usb_pc_cpu_flush(td->page_cache); + + td->td_trb[0].dwTrb3 = td_last->td_trb[td_last->ntrb].dwTrb3; + usb_pc_cpu_flush(td->page_cache); + + xhci_endpoint_doorbell(xfer); + } +} + +/*------------------------------------------------------------------------* + * xhci_check_transfer + *------------------------------------------------------------------------*/ +static void +xhci_check_transfer(struct xhci_softc *sc, struct xhci_trb *trb) +{ + int64_t offset; + uint64_t td_event; + uint32_t temp; + uint32_t remainder; + uint8_t status; + uint8_t halted; + uint8_t epno; + uint8_t index; + uint8_t i; + + /* decode TRB */ + td_event = le64toh(trb->qwTrb0); + temp = le32toh(trb->dwTrb2); + + remainder = XHCI_TRB_2_REM_GET(temp); + status = XHCI_TRB_2_ERROR_GET(temp); + + temp = le32toh(trb->dwTrb3); + epno = XHCI_TRB_3_EP_GET(temp); + index = XHCI_TRB_3_SLOT_GET(temp); + + /* check if error means halted */ + halted = (status != XHCI_TRB_ERROR_SHORT_PKT && + status != XHCI_TRB_ERROR_SUCCESS); + + DPRINTF("slot=%u epno=%u remainder=%u status=%u\n", + index, epno, remainder, status); + + if (index > sc->sc_noslot) { + DPRINTF("Invalid slot.\n"); + return; + } + + if ((epno == 0) || (epno >= XHCI_MAX_ENDPOINTS)) { + DPRINTF("Invalid endpoint.\n"); + return; + } + + /* try to find the USB transfer that generated the event */ + for (i = 0; i != (XHCI_MAX_TRANSFERS - 1); i++) { + struct usb_xfer *xfer; + struct xhci_td *td; + struct xhci_endpoint_ext *pepext; + + pepext = &sc->sc_hw.devs[index].endp[epno]; + + xfer = pepext->xfer[i]; + if (xfer == NULL) + continue; + + td = xfer->td_transfer_cache; + + DPRINTFN(5, "Checking if 0x%016llx == (0x%016llx .. 0x%016llx)\n", + (long long)td_event, + (long long)td->td_self, + (long long)td->td_self + sizeof(td->td_trb)); + + /* + * NOTE: Some XHCI implementations might not trigger + * an event on the last LINK TRB so we need to + * consider both the last and second last event + * address as conditions for a successful transfer. + * + * NOTE: We assume that the XHCI will only trigger one + * event per chain of TRBs. + */ + + offset = td_event - td->td_self; + + if (offset >= 0 && + offset < sizeof(td->td_trb)) { + + usb_pc_cpu_invalidate(td->page_cache); + + /* compute rest of remainder, if any */ + for (i = (offset / 16) + 1; i < td->ntrb; i++) { + temp = le32toh(td->td_trb[i].dwTrb2); + remainder += XHCI_TRB_2_BYTES_GET(temp); + } + + DPRINTFN(5, "New remainder: %u\n", remainder); + + /* clear isochronous transfer errors */ + if (xfer->flags_int.isochronous_xfr) { + if (halted) { + halted = 0; + status = XHCI_TRB_ERROR_SUCCESS; + remainder = td->len; + } + } + + /* "td->remainder" is verified later */ + td->remainder = remainder; + td->status = status; + + usb_pc_cpu_flush(td->page_cache); + + /* + * 1) Last transfer descriptor makes the + * transfer done + */ + if (((void *)td) == xfer->td_transfer_last) { + DPRINTF("TD is last\n"); + xhci_generic_done(xfer); + break; + } + + /* + * 2) Any kind of error makes the transfer + * done + */ + if (halted) { + DPRINTF("TD has I/O error\n"); + xhci_generic_done(xfer); + break; + } + + /* + * 3) If there is no alternate next transfer, + * a short packet also makes the transfer done + */ + if (td->remainder > 0) { + DPRINTF("TD has short pkt\n"); + if (xfer->flags_int.short_frames_ok || + xfer->flags_int.isochronous_xfr || + xfer->flags_int.control_xfr) { + /* follow the alt next */ + xfer->td_transfer_cache = td->alt_next; + xhci_activate_transfer(xfer); + break; + } + xhci_skip_transfer(xfer); + xhci_generic_done(xfer); + break; + } + + /* + * 4) Transfer complete - go to next TD + */ + DPRINTF("Following next TD\n"); + xfer->td_transfer_cache = td->obj_next; + xhci_activate_transfer(xfer); + break; /* there should only be one match */ + } + } +} + +static void +xhci_check_command(struct xhci_softc *sc, struct xhci_trb *trb) +{ + if (sc->sc_cmd_addr == trb->qwTrb0) { + DPRINTF("Received command event\n"); + sc->sc_cmd_result[0] = trb->dwTrb2; + sc->sc_cmd_result[1] = trb->dwTrb3; + cv_signal(&sc->sc_cmd_cv); + } +} + +static void +xhci_interrupt_poll(struct xhci_softc *sc) +{ + struct usb_page_search buf_res; + struct xhci_hw_root *phwr; + uint64_t addr; + uint32_t temp; + uint16_t i; + uint8_t event; + uint8_t j; + uint8_t k; + uint8_t t; + + usbd_get_page(&sc->sc_hw.root_pc, 0, &buf_res); + + phwr = buf_res.buffer; + + /* Receive any events */ + + usb_pc_cpu_invalidate(&sc->sc_hw.root_pc); + + i = sc->sc_event_idx; + j = sc->sc_event_ccs; + t = 2; + + while (1) { + + temp = le32toh(phwr->hwr_events[i].dwTrb3); + + k = (temp & XHCI_TRB_3_CYCLE_BIT) ? 1 : 0; + + if (j != k) + break; + + event = XHCI_TRB_3_TYPE_GET(temp); + + DPRINTFN(10, "event[%u] = %u (0x%016llx 0x%08lx 0x%08lx)\n", + i, event, (long long)le64toh(phwr->hwr_events[i].qwTrb0), + (long)le32toh(phwr->hwr_events[i].dwTrb2), + (long)le32toh(phwr->hwr_events[i].dwTrb3)); + + switch (event) { + case XHCI_TRB_EVENT_TRANSFER: + xhci_check_transfer(sc, &phwr->hwr_events[i]); + break; + case XHCI_TRB_EVENT_CMD_COMPLETE: + xhci_check_command(sc, &phwr->hwr_events[i]); + break; + default: + DPRINTF("Unhandled event = %u\n", event); + break; + } + + i++; + + if (i == XHCI_MAX_EVENTS) { + i = 0; + j ^= 1; + + /* check for timeout */ + if (!--t) + break; + } + } + + sc->sc_event_idx = i; + sc->sc_event_ccs = j; + + /* + * NOTE: The Event Ring Dequeue Pointer Register is 64-bit + * latched. That means to activate the register we need to + * write both the low and high double word of the 64-bit + * register. + */ + + addr = (uint32_t)buf_res.physaddr; + addr += (uintptr_t)&((struct xhci_hw_root *)0)->hwr_events[i]; + + /* try to clear busy bit */ + addr |= XHCI_ERDP_LO_BUSY; + + XWRITE4(sc, runt, XHCI_ERDP_LO(0), (uint32_t)addr); + XWRITE4(sc, runt, XHCI_ERDP_HI(0), (uint32_t)(addr >> 32)); +} + +static usb_error_t +xhci_do_command(struct xhci_softc *sc, struct xhci_trb *trb, + uint16_t timeout_ms) +{ + struct usb_page_search buf_res; + struct xhci_hw_root *phwr; + uint64_t addr; + uint32_t temp; + uint8_t i; + uint8_t j; + int err; + + XHCI_CMD_ASSERT_LOCKED(sc); + + /* get hardware root structure */ + + usbd_get_page(&sc->sc_hw.root_pc, 0, &buf_res); + + phwr = buf_res.buffer; + + /* Queue command */ + + USB_BUS_LOCK(&sc->sc_bus); + + i = sc->sc_command_idx; + j = sc->sc_command_ccs; + + DPRINTFN(10, "command[%u] = %u (0x%016llx, 0x%08lx, 0x%08lx)\n", + i, XHCI_TRB_3_TYPE_GET(le32toh(trb->dwTrb3)), + (long long)le64toh(trb->qwTrb0), + (long)le32toh(trb->dwTrb2), + (long)le32toh(trb->dwTrb3)); + + phwr->hwr_commands[i].qwTrb0 = trb->qwTrb0; + phwr->hwr_commands[i].dwTrb2 = trb->dwTrb2; + + usb_pc_cpu_flush(&sc->sc_hw.root_pc); + + temp = trb->dwTrb3; + + if (j) + temp |= htole32(XHCI_TRB_3_CYCLE_BIT); + else + temp &= ~htole32(XHCI_TRB_3_CYCLE_BIT); + + temp &= ~htole32(XHCI_TRB_3_TC_BIT); + + phwr->hwr_commands[i].dwTrb3 = temp; + + usb_pc_cpu_flush(&sc->sc_hw.root_pc); + + addr = buf_res.physaddr; + addr += (uintptr_t)&((struct xhci_hw_root *)0)->hwr_commands[i]; + + sc->sc_cmd_addr = htole64(addr); + + i++; + + if (i == (XHCI_MAX_COMMANDS - 1)) { + + if (j) { + temp = htole32(XHCI_TRB_3_TC_BIT | + XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK) | + XHCI_TRB_3_CYCLE_BIT); + } else { + temp = htole32(XHCI_TRB_3_TC_BIT | + XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK)); + } + + phwr->hwr_commands[i].dwTrb3 = temp; + + usb_pc_cpu_flush(&sc->sc_hw.root_pc); + + i = 0; + j ^= 1; + } + + sc->sc_command_idx = i; + sc->sc_command_ccs = j; + + XWRITE4(sc, door, XHCI_DOORBELL(0), 0); + + err = cv_timedwait(&sc->sc_cmd_cv, &sc->sc_bus.bus_mtx, + USB_MS_TO_TICKS(timeout_ms)); + + if (err) { + DPRINTFN(0, "Command timeout!\n"); + err = USB_ERR_TIMEOUT; + trb->dwTrb2 = 0; + trb->dwTrb3 = 0; + } else { + temp = le32toh(sc->sc_cmd_result[0]); + if (XHCI_TRB_2_ERROR_GET(temp) != XHCI_TRB_ERROR_SUCCESS) + err = USB_ERR_IOERROR; + + trb->dwTrb2 = sc->sc_cmd_result[0]; + trb->dwTrb3 = sc->sc_cmd_result[1]; + } + + USB_BUS_UNLOCK(&sc->sc_bus); + + return (err); +} + +#if 0 +static usb_error_t +xhci_cmd_nop(struct xhci_softc *sc) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_NOOP); + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} +#endif + +static usb_error_t +xhci_cmd_enable_slot(struct xhci_softc *sc, uint8_t *pslot) +{ + struct xhci_trb trb; + uint32_t temp; + usb_error_t err; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + trb.dwTrb3 = htole32(XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_ENABLE_SLOT)); + + err = xhci_do_command(sc, &trb, 50 /* ms */); + if (err) + goto done; + + temp = le32toh(trb.dwTrb3); + + *pslot = XHCI_TRB_3_SLOT_GET(temp); + +done: + return (err); +} + +static usb_error_t +xhci_cmd_disable_slot(struct xhci_softc *sc, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_DISABLE_SLOT) | + XHCI_TRB_3_SLOT_SET(slot_id); + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_set_address(struct xhci_softc *sc, uint64_t input_ctx, + uint8_t bsr, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = htole64(input_ctx); + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_ADDRESS_DEVICE) | + XHCI_TRB_3_SLOT_SET(slot_id); + + if (bsr) + temp |= XHCI_TRB_3_BSR_BIT; + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 500 /* ms */)); +} + +static usb_error_t +xhci_set_address(struct usb_device *udev, struct mtx *mtx, uint16_t address) +{ + struct usb_page_search buf_inp; + struct usb_page_search buf_dev; + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct xhci_hw_dev *hdev; + struct xhci_dev_ctx *pdev; + struct xhci_endpoint_ext *pepext; + uint16_t mps; + usb_error_t err; + uint8_t index; + + /* the root HUB case is not handled here */ + if (udev->parent_hub == NULL) + return (USB_ERR_INVAL); + + index = udev->controller_slot_id; + + hdev = &sc->sc_hw.devs[index]; + + if (mtx != NULL) + mtx_unlock(mtx); + + XHCI_CMD_LOCK(sc); + + switch (hdev->state) { + case XHCI_ST_DEFAULT: + case XHCI_ST_ENABLED: + + hdev->state = XHCI_ST_ENABLED; + + /* set configure mask to slot and EP0 */ + xhci_configure_mask(udev, 3, 0); + + /* configure input slot context structure */ + err = xhci_configure_device(udev); + + if (err != 0) { + DPRINTF("Could not configure device\n"); + break; + } + + /* configure input endpoint context structure */ + switch (udev->speed) { + case USB_SPEED_LOW: + case USB_SPEED_FULL: + mps = 8; + break; + case USB_SPEED_HIGH: + mps = 64; + break; + default: + mps = 512; + break; + } + + pepext = xhci_get_endpoint_ext(udev, + &udev->ctrl_ep_desc); + err = xhci_configure_endpoint(udev, + &udev->ctrl_ep_desc, pepext->physaddr, + 0, 1, 1, 0, mps, mps); + + if (err != 0) { + DPRINTF("Could not configure default endpoint\n"); + break; + } + + /* execute set address command */ + usbd_get_page(&hdev->input_pc, 0, &buf_inp); + + err = xhci_cmd_set_address(sc, buf_inp.physaddr, + (address == 0), index); + + if (err != 0) { + DPRINTF("Could not set address " + "for slot %u.\n", index); + if (address != 0) + break; + } + + /* update device address to new value */ + + usbd_get_page(&hdev->device_pc, 0, &buf_dev); + pdev = buf_dev.buffer; + usb_pc_cpu_invalidate(&hdev->device_pc); + udev->address = XHCI_SCTX_3_DEV_ADDR_GET(pdev->ctx_slot.dwSctx3); + + /* update device state to new value */ + + if (address != 0) + hdev->state = XHCI_ST_ADDRESSED; + else + hdev->state = XHCI_ST_DEFAULT; + break; + + default: + DPRINTF("Wrong state for set address.\n"); + err = USB_ERR_IOERROR; + break; + } + XHCI_CMD_UNLOCK(sc); + + if (mtx != NULL) + mtx_lock(mtx); + + return (err); +} + +static usb_error_t +xhci_cmd_configure_ep(struct xhci_softc *sc, uint64_t input_ctx, + uint8_t deconfigure, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = htole64(input_ctx); + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_CONFIGURE_EP) | + XHCI_TRB_3_SLOT_SET(slot_id); + + if (deconfigure) + temp |= XHCI_TRB_3_DCEP_BIT; + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_evaluate_ctx(struct xhci_softc *sc, uint64_t input_ctx, + uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = htole64(input_ctx); + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_EVALUATE_CTX) | + XHCI_TRB_3_SLOT_SET(slot_id); + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_reset_ep(struct xhci_softc *sc, uint8_t preserve, + uint8_t ep_id, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_RESET_EP) | + XHCI_TRB_3_SLOT_SET(slot_id) | + XHCI_TRB_3_EP_SET(ep_id); + + if (preserve) + temp |= XHCI_TRB_3_PRSV_BIT; + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_set_tr_dequeue_ptr(struct xhci_softc *sc, uint64_t dequeue_ptr, + uint16_t stream_id, uint8_t ep_id, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = htole64(dequeue_ptr); + + temp = XHCI_TRB_2_STREAM_SET(stream_id); + trb.dwTrb2 = htole32(temp); + + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_SET_TR_DEQUEUE) | + XHCI_TRB_3_SLOT_SET(slot_id) | + XHCI_TRB_3_EP_SET(ep_id); + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_stop_ep(struct xhci_softc *sc, uint8_t suspend, + uint8_t ep_id, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_STOP_EP) | + XHCI_TRB_3_SLOT_SET(slot_id) | + XHCI_TRB_3_EP_SET(ep_id); + + if (suspend) + temp |= XHCI_TRB_3_SUSP_EP_BIT; + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +static usb_error_t +xhci_cmd_reset_dev(struct xhci_softc *sc, uint8_t slot_id) +{ + struct xhci_trb trb; + uint32_t temp; + + DPRINTF("\n"); + + trb.qwTrb0 = 0; + trb.dwTrb2 = 0; + temp = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_RESET_DEVICE) | + XHCI_TRB_3_SLOT_SET(slot_id); + + trb.dwTrb3 = htole32(temp); + + return (xhci_do_command(sc, &trb, 50 /* ms */)); +} + +/*------------------------------------------------------------------------* + * xhci_interrupt - XHCI interrupt handler + *------------------------------------------------------------------------*/ +void +xhci_interrupt(struct xhci_softc *sc) +{ + uint32_t status; + uint32_t temp; + + USB_BUS_LOCK(&sc->sc_bus); + + status = XREAD4(sc, oper, XHCI_USBSTS); + + /* acknowledge interrupts */ + + XWRITE4(sc, oper, XHCI_USBSTS, status); + + temp = XREAD4(sc, runt, XHCI_IMAN(0)); + + /* acknowledge pending event */ + + XWRITE4(sc, runt, XHCI_IMAN(0), temp); + + DPRINTFN(16, "real interrupt (sts=0x%08x, " + "iman=0x%08x)\n", status, temp); + + if (status != 0) { + if (status & XHCI_STS_PCD) { + xhci_root_intr(sc); + } + + if (status & XHCI_STS_HCH) { + printf("%s: host controller halted\n", + __FUNCTION__); + } + + if (status & XHCI_STS_HSE) { + printf("%s: host system error\n", + __FUNCTION__); + } + + if (status & XHCI_STS_HCE) { + printf("%s: host controller error\n", + __FUNCTION__); + } + } + + xhci_interrupt_poll(sc); + + USB_BUS_UNLOCK(&sc->sc_bus); +} + +/*------------------------------------------------------------------------* + * xhci_timeout - XHCI timeout handler + *------------------------------------------------------------------------*/ +static void +xhci_timeout(void *arg) +{ + struct usb_xfer *xfer = arg; + + DPRINTF("xfer=%p\n", xfer); + + USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED); + + /* transfer is transferred */ + xhci_device_done(xfer, USB_ERR_TIMEOUT); +} + +static void +xhci_do_poll(struct usb_bus *bus) +{ + struct xhci_softc *sc = XHCI_BUS2SC(bus); + + USB_BUS_LOCK(&sc->sc_bus); + xhci_interrupt_poll(sc); + USB_BUS_UNLOCK(&sc->sc_bus); +} + +static void +xhci_setup_generic_chain_sub(struct xhci_std_temp *temp) +{ + struct usb_page_search buf_res; + struct xhci_td *td; + struct xhci_td *td_next; + struct xhci_td *td_alt_next; + uint32_t buf_offset; + uint32_t average; + uint32_t len_old; + uint32_t dword; + uint8_t shortpkt_old; + uint8_t precompute; + uint8_t x; + + td_alt_next = NULL; + buf_offset = 0; + shortpkt_old = temp->shortpkt; + len_old = temp->len; + precompute = 1; + +restart: + + td = temp->td; + td_next = temp->td_next; + + while (1) { + + if (temp->len == 0) { + + if (temp->shortpkt) + break; + + /* send a Zero Length Packet, ZLP, last */ + + temp->shortpkt = 1; + average = 0; + + } else { + + average = temp->average; + + if (temp->len < average) { + if (temp->len % temp->max_packet_size) { + temp->shortpkt = 1; + } + average = temp->len; + } + } + + if (td_next == NULL) + panic("%s: out of XHCI transfer descriptors!", __FUNCTION__); + + /* get next TD */ + + td = td_next; + td_next = td->obj_next; + + /* check if we are pre-computing */ + + if (precompute) { + + /* update remaining length */ + + temp->len -= average; + + continue; + } + /* fill out current TD */ + + td->len = average; + td->remainder = 0; + td->status = 0; + + /* update remaining length */ + + temp->len -= average; + + /* reset TRB index */ + + x = 0; + + if (temp->trb_type == XHCI_TRB_TYPE_SETUP_STAGE) { + /* immediate data */ + + if (average > 8) + average = 8; + + td->td_trb[0].qwTrb0 = 0; + + usbd_copy_out(temp->pc, temp->offset + buf_offset, + (uint8_t *)(uintptr_t)&td->td_trb[0].qwTrb0, + average); + + dword = XHCI_TRB_2_BYTES_SET(8) | + XHCI_TRB_2_TDSZ_SET(0) | + XHCI_TRB_2_IRQ_SET(0); + + td->td_trb[0].dwTrb2 = htole32(dword); + + dword = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_SETUP_STAGE) | + XHCI_TRB_3_IDT_BIT | XHCI_TRB_3_CYCLE_BIT; + + /* check wLength */ + if (td->td_trb[0].qwTrb0 & + htole64(XHCI_TRB_0_WLENGTH_MASK)) { + if (td->td_trb[0].qwTrb0 & htole64(1)) + dword |= XHCI_TRB_3_TRT_IN; + else + dword |= XHCI_TRB_3_TRT_OUT; + } + + td->td_trb[0].dwTrb3 = htole32(dword); +#ifdef USB_DEBUG + xhci_dump_trb(&td->td_trb[x]); +#endif + x++; + + } else do { + + uint32_t npkt; + + /* fill out buffer pointers */ + + if (average == 0) { + npkt = 1; + memset(&buf_res, 0, sizeof(buf_res)); + } else { + usbd_get_page(temp->pc, temp->offset + + buf_offset, &buf_res); + + /* get length to end of page */ + if (buf_res.length > average) + buf_res.length = average; + + /* check for maximum length */ + if (buf_res.length > XHCI_TD_PAGE_SIZE) + buf_res.length = XHCI_TD_PAGE_SIZE; + + /* setup npkt */ + npkt = (average + temp->max_packet_size - 1) / + temp->max_packet_size; + + if (npkt > 31) + npkt = 31; + } + + /* fill out TRB's */ + td->td_trb[x].qwTrb0 = + htole64((uint64_t)buf_res.physaddr); + + dword = + XHCI_TRB_2_BYTES_SET(buf_res.length) | + XHCI_TRB_2_TDSZ_SET(npkt) | + XHCI_TRB_2_IRQ_SET(0); + + td->td_trb[x].dwTrb2 = htole32(dword); + + dword = XHCI_TRB_3_CHAIN_BIT | XHCI_TRB_3_CYCLE_BIT | + XHCI_TRB_3_TYPE_SET(temp->trb_type) | + XHCI_TRB_3_FRID_SET(temp->isoc_frame / 8) | + XHCI_TRB_3_TBC_SET(temp->tbc) | + XHCI_TRB_3_TLBPC_SET(temp->tlbpc); + + if (temp->direction == UE_DIR_IN) { + dword |= XHCI_TRB_3_DIR_IN; + + /* + * NOTE: Only the SETUP stage should + * use the IDT bit. Else transactions + * can be sent using the wrong data + * toggle value. + */ + if (temp->trb_type != + XHCI_TRB_TYPE_SETUP_STAGE && + temp->trb_type != + XHCI_TRB_TYPE_STATUS_STAGE) + dword |= XHCI_TRB_3_ISP_BIT; + } + + td->td_trb[x].dwTrb3 = htole32(dword); + + average -= buf_res.length; + buf_offset += buf_res.length; +#ifdef USB_DEBUG + xhci_dump_trb(&td->td_trb[x]); +#endif + x++; + + } while (average != 0); + + td->td_trb[x-1].dwTrb3 |= htole32(XHCI_TRB_3_IOC_BIT); + + /* store number of data TRB's */ + + td->ntrb = x; + + DPRINTF("NTRB=%u\n", x); + + /* fill out link TRB */ + + if (td_next != NULL) { + /* link the current TD with the next one */ + td->td_trb[x].qwTrb0 = htole64((uint64_t)td_next->td_self); + DPRINTF("LINK=0x%08llx\n", (long long)td_next->td_self); + } else { + /* this field will get updated later */ + DPRINTF("NOLINK\n"); + } + + dword = XHCI_TRB_2_IRQ_SET(0); + + td->td_trb[x].dwTrb2 = htole32(dword); + + dword = XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK) | + XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_IOC_BIT; + + td->td_trb[x].dwTrb3 = htole32(dword); + + td->alt_next = td_alt_next; +#ifdef USB_DEBUG + xhci_dump_trb(&td->td_trb[x]); +#endif + usb_pc_cpu_flush(td->page_cache); + } + + if (precompute) { + precompute = 0; + + /* setup alt next pointer, if any */ + if (temp->last_frame) { + td_alt_next = NULL; + } else { + /* we use this field internally */ + td_alt_next = td_next; + } + + /* restore */ + temp->shortpkt = shortpkt_old; + temp->len = len_old; + goto restart; + } + + /* remove cycle bit from first if we are stepping the TRBs */ + if (temp->step_td) + td->td_trb[0].dwTrb3 &= ~htole32(XHCI_TRB_3_CYCLE_BIT); + + /* remove chain bit because this is the last TRB in the chain */ + td->td_trb[td->ntrb - 1].dwTrb2 &= ~htole32(XHCI_TRB_2_TDSZ_SET(15)); + td->td_trb[td->ntrb - 1].dwTrb3 &= ~htole32(XHCI_TRB_3_CHAIN_BIT); + + usb_pc_cpu_flush(td->page_cache); + + temp->td = td; + temp->td_next = td_next; +} + +static void +xhci_setup_generic_chain(struct usb_xfer *xfer) +{ + struct xhci_std_temp temp; + struct xhci_td *td; + uint32_t x; + uint32_t y; + uint8_t mult; + + temp.step_td = 0; + temp.tbc = 0; + temp.tlbpc = 0; + temp.average = xfer->max_hc_frame_size; + temp.max_packet_size = xfer->max_packet_size; + temp.sc = XHCI_BUS2SC(xfer->xroot->bus); + temp.pc = NULL; + temp.last_frame = 0; + temp.offset = 0; + temp.multishort = xfer->flags_int.isochronous_xfr || + xfer->flags_int.control_xfr || + xfer->flags_int.short_frames_ok; + + /* toggle the DMA set we are using */ + xfer->flags_int.curr_dma_set ^= 1; + + /* get next DMA set */ + td = xfer->td_start[xfer->flags_int.curr_dma_set]; + + temp.td = NULL; + temp.td_next = td; + + xfer->td_transfer_first = td; + xfer->td_transfer_cache = td; + + if (xfer->flags_int.isochronous_xfr) { + uint8_t shift; + + /* compute multiplier for ISOCHRONOUS transfers */ + mult = xfer->endpoint->ecomp ? + (xfer->endpoint->ecomp->bmAttributes & 3) : 0; + /* check for USB 2.0 multiplier */ + if (mult == 0) { + mult = (xfer->endpoint->edesc-> + wMaxPacketSize[1] >> 3) & 3; + } + /* range check */ + if (mult > 2) + mult = 3; + else + mult++; + + x = XREAD4(temp.sc, runt, XHCI_MFINDEX); + + DPRINTF("MFINDEX=0x%08x\n", x); + + switch (usbd_get_speed(xfer->xroot->udev)) { + case USB_SPEED_FULL: + shift = 3; + temp.isoc_delta = 8; /* 1ms */ + x += temp.isoc_delta - 1; + x &= ~(temp.isoc_delta - 1); + break; + default: + shift = usbd_xfer_get_fps_shift(xfer); + temp.isoc_delta = 1U << shift; + x += temp.isoc_delta - 1; + x &= ~(temp.isoc_delta - 1); + /* simple frame load balancing */ + x += xfer->endpoint->usb_uframe; + break; + } + + y = XHCI_MFINDEX_GET(x - xfer->endpoint->isoc_next); + + if ((xfer->endpoint->is_synced == 0) || + (y < (xfer->nframes << shift)) || + (XHCI_MFINDEX_GET(-y) >= (128 * 8))) { + /* + * If there is data underflow or the pipe + * queue is empty we schedule the transfer a + * few frames ahead of the current frame + * position. Else two isochronous transfers + * might overlap. + */ + xfer->endpoint->isoc_next = XHCI_MFINDEX_GET(x + (3 * 8)); + xfer->endpoint->is_synced = 1; + DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next); + } + + /* compute isochronous completion time */ + + y = XHCI_MFINDEX_GET(xfer->endpoint->isoc_next - (x & ~7)); + + xfer->isoc_time_complete = + usb_isoc_time_expand(&temp.sc->sc_bus, x / 8) + + (y / 8) + (((xfer->nframes << shift) + 7) / 8); + + x = 0; + temp.isoc_frame = xfer->endpoint->isoc_next; + temp.trb_type = XHCI_TRB_TYPE_ISOCH; + + xfer->endpoint->isoc_next += xfer->nframes << shift; + + } else if (xfer->flags_int.control_xfr) { + + /* check if we should prepend a setup message */ + + if (xfer->flags_int.control_hdr) { + + temp.len = xfer->frlengths[0]; + temp.pc = xfer->frbuffers + 0; + temp.shortpkt = temp.len ? 1 : 0; + temp.trb_type = XHCI_TRB_TYPE_SETUP_STAGE; + temp.direction = 0; + + /* check for last frame */ + if (xfer->nframes == 1) { + /* no STATUS stage yet, SETUP is last */ + if (xfer->flags_int.control_act) + temp.last_frame = 1; + } + + xhci_setup_generic_chain_sub(&temp); + } + x = 1; + mult = 1; + temp.isoc_delta = 0; + temp.isoc_frame = 0; + temp.trb_type = XHCI_TRB_TYPE_DATA_STAGE; + } else { + x = 0; + mult = 1; + temp.isoc_delta = 0; + temp.isoc_frame = 0; + temp.trb_type = XHCI_TRB_TYPE_NORMAL; + } + + if (x != xfer->nframes) { + /* setup page_cache pointer */ + temp.pc = xfer->frbuffers + x; + /* set endpoint direction */ + temp.direction = UE_GET_DIR(xfer->endpointno); + } + + while (x != xfer->nframes) { + + /* DATA0 / DATA1 message */ + + temp.len = xfer->frlengths[x]; + temp.step_td = ((xfer->endpointno & UE_DIR_IN) && + x != 0 && temp.multishort == 0); + + x++; + + if (x == xfer->nframes) { + if (xfer->flags_int.control_xfr) { + /* no STATUS stage yet, DATA is last */ + if (xfer->flags_int.control_act) + temp.last_frame = 1; + } else { + temp.last_frame = 1; + } + } + if (temp.len == 0) { + + /* make sure that we send an USB packet */ + + temp.shortpkt = 0; + + temp.tbc = 0; + temp.tlbpc = mult - 1; + + } else if (xfer->flags_int.isochronous_xfr) { + + uint8_t tdpc; + + /* isochronous transfers don't have short packet termination */ + + temp.shortpkt = 1; + + /* isochronous transfers have a transfer limit */ + + if (temp.len > xfer->max_frame_size) + temp.len = xfer->max_frame_size; + + /* compute TD packet count */ + tdpc = (temp.len + xfer->max_packet_size - 1) / + xfer->max_packet_size; + + temp.tbc = ((tdpc + mult - 1) / mult) - 1; + temp.tlbpc = (tdpc % mult); + + if (temp.tlbpc == 0) + temp.tlbpc = mult - 1; + else + temp.tlbpc--; + } else { + + /* regular data transfer */ + + temp.shortpkt = xfer->flags.force_short_xfer ? 0 : 1; + } + + xhci_setup_generic_chain_sub(&temp); + + if (xfer->flags_int.isochronous_xfr) { + temp.offset += xfer->frlengths[x - 1]; + temp.isoc_frame += temp.isoc_delta; + } else { + /* get next Page Cache pointer */ + temp.pc = xfer->frbuffers + x; + } + } + + /* check if we should append a status stage */ + + if (xfer->flags_int.control_xfr && + !xfer->flags_int.control_act) { + + /* + * Send a DATA1 message and invert the current + * endpoint direction. + */ + temp.step_td = (xfer->nframes != 0); + temp.direction = UE_GET_DIR(xfer->endpointno) ^ UE_DIR_IN; + temp.len = 0; + temp.pc = NULL; + temp.shortpkt = 0; + temp.last_frame = 1; + temp.trb_type = XHCI_TRB_TYPE_STATUS_STAGE; + + xhci_setup_generic_chain_sub(&temp); + } + + td = temp.td; + + /* must have at least one frame! */ + + xfer->td_transfer_last = td; + + DPRINTF("first=%p last=%p\n", xfer->td_transfer_first, td); +} + +static void +xhci_set_slot_pointer(struct xhci_softc *sc, uint8_t index, uint64_t dev_addr) +{ + struct usb_page_search buf_res; + struct xhci_dev_ctx_addr *pdctxa; + + usbd_get_page(&sc->sc_hw.ctx_pc, 0, &buf_res); + + pdctxa = buf_res.buffer; + + DPRINTF("addr[%u]=0x%016llx\n", index, (long long)dev_addr); + + pdctxa->qwBaaDevCtxAddr[index] = htole64(dev_addr); + + usb_pc_cpu_flush(&sc->sc_hw.ctx_pc); +} + +static usb_error_t +xhci_configure_mask(struct usb_device *udev, uint32_t mask, uint8_t drop) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct usb_page_search buf_inp; + struct xhci_input_dev_ctx *pinp; + uint8_t index; + + index = udev->controller_slot_id; + + usbd_get_page(&sc->sc_hw.devs[index].input_pc, 0, &buf_inp); + + pinp = buf_inp.buffer; + + if (drop) { + mask &= XHCI_INCTX_NON_CTRL_MASK; + pinp->ctx_input.dwInCtx0 = htole32(mask); + pinp->ctx_input.dwInCtx1 = 0; + } else { + pinp->ctx_input.dwInCtx0 = 0; + pinp->ctx_input.dwInCtx1 = htole32(mask); + } + return (0); +} + +static usb_error_t +xhci_configure_endpoint(struct usb_device *udev, + struct usb_endpoint_descriptor *edesc, uint64_t ring_addr, + uint16_t interval, uint8_t max_packet_count, uint8_t mult, + uint8_t fps_shift, uint16_t max_packet_size, uint16_t max_frame_size) +{ + struct usb_page_search buf_inp; + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct xhci_input_dev_ctx *pinp; + uint32_t temp; + uint8_t index; + uint8_t epno; + uint8_t type; + + index = udev->controller_slot_id; + + usbd_get_page(&sc->sc_hw.devs[index].input_pc, 0, &buf_inp); + + pinp = buf_inp.buffer; + + epno = edesc->bEndpointAddress; + type = edesc->bmAttributes & UE_XFERTYPE; + + if (type == UE_CONTROL) + epno |= UE_DIR_IN; + + epno = XHCI_EPNO2EPID(epno); + + if (epno == 0) + return (USB_ERR_NO_PIPE); /* invalid */ + + if (max_packet_count == 0) + return (USB_ERR_BAD_BUFSIZE); + + max_packet_count--; + + if (mult == 0) + return (USB_ERR_BAD_BUFSIZE); + + temp = XHCI_EPCTX_0_EPSTATE_SET(0) | + XHCI_EPCTX_0_MAXP_STREAMS_SET(0) | + XHCI_EPCTX_0_LSA_SET(0); + + switch (udev->speed) { + case USB_SPEED_FULL: + case USB_SPEED_LOW: + /* 1ms -> 125us */ + fps_shift += 3; + break; + default: + break; + } + + switch (type) { + case UE_INTERRUPT: + if (fps_shift > 3) + fps_shift--; + temp |= XHCI_EPCTX_0_IVAL_SET(fps_shift); + break; + case UE_ISOCHRONOUS: + temp |= XHCI_EPCTX_0_IVAL_SET(fps_shift); + + switch (udev->speed) { + case USB_SPEED_SUPER: + if (mult > 3) + mult = 3; + temp |= XHCI_EPCTX_0_MULT_SET(mult - 1); + max_packet_count /= mult; + break; + default: + break; + } + break; + default: + break; + } + + pinp->ctx_ep[epno - 1].dwEpCtx0 = htole32(temp); + + temp = + XHCI_EPCTX_1_HID_SET(0) | + XHCI_EPCTX_1_MAXB_SET(max_packet_count) | + XHCI_EPCTX_1_MAXP_SIZE_SET(max_packet_size); + + if ((udev->parent_hs_hub != NULL) || (udev->address != 0)) { + if (type != UE_ISOCHRONOUS) + temp |= XHCI_EPCTX_1_CERR_SET(3); + } + + switch (type) { + case UE_CONTROL: + temp |= XHCI_EPCTX_1_EPTYPE_SET(4); + break; + case UE_ISOCHRONOUS: + temp |= XHCI_EPCTX_1_EPTYPE_SET(1); + break; + case UE_BULK: + temp |= XHCI_EPCTX_1_EPTYPE_SET(2); + break; + default: + temp |= XHCI_EPCTX_1_EPTYPE_SET(3); + break; + } + + /* check for IN direction */ + if (epno & 1) + temp |= XHCI_EPCTX_1_EPTYPE_SET(4); + + pinp->ctx_ep[epno - 1].dwEpCtx1 = htole32(temp); + + ring_addr |= XHCI_EPCTX_2_DCS_SET(1); + + pinp->ctx_ep[epno - 1].qwEpCtx2 = htole64(ring_addr); + + switch (edesc->bmAttributes & UE_XFERTYPE) { + case UE_INTERRUPT: + case UE_ISOCHRONOUS: + temp = XHCI_EPCTX_4_MAX_ESIT_PAYLOAD_SET(max_frame_size) | + XHCI_EPCTX_4_AVG_TRB_LEN_SET(MIN(XHCI_PAGE_SIZE, + max_frame_size)); + break; + case UE_CONTROL: + temp = XHCI_EPCTX_4_AVG_TRB_LEN_SET(8); + break; + default: + temp = XHCI_EPCTX_4_AVG_TRB_LEN_SET(XHCI_PAGE_SIZE); + break; + } + + pinp->ctx_ep[epno - 1].dwEpCtx4 = htole32(temp); + +#ifdef USB_DEBUG + xhci_dump_endpoint(&pinp->ctx_ep[epno - 1]); +#endif + usb_pc_cpu_flush(&sc->sc_hw.devs[index].input_pc); + + return (0); /* success */ +} + +static usb_error_t +xhci_configure_endpoint_by_xfer(struct usb_xfer *xfer) +{ + struct xhci_endpoint_ext *pepext; + struct usb_endpoint_ss_comp_descriptor *ecomp; + + pepext = xhci_get_endpoint_ext(xfer->xroot->udev, + xfer->endpoint->edesc); + + ecomp = xfer->endpoint->ecomp; + + pepext->trb[0].dwTrb3 = 0; /* halt any transfers */ + usb_pc_cpu_flush(pepext->page_cache); + + return (xhci_configure_endpoint(xfer->xroot->udev, + xfer->endpoint->edesc, pepext->physaddr, + xfer->interval, xfer->max_packet_count, + (ecomp != NULL) ? (ecomp->bmAttributes & 3) + 1 : 1, + usbd_xfer_get_fps_shift(xfer), xfer->max_packet_size, + xfer->max_frame_size)); +} + +static usb_error_t +xhci_configure_device(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct usb_page_search buf_dev; + struct usb_page_search buf_inp; + struct usb_page_cache *pcdev; + struct usb_page_cache *pcinp; + struct xhci_input_dev_ctx *pinp; + struct xhci_dev_ctx *pdev; + struct usb_device *hubdev; + uint32_t temp; + uint32_t route; + uint8_t is_hub; + uint8_t index; + uint8_t rh_port; + + index = udev->controller_slot_id; + + DPRINTF("index=%u\n", index); + + pcdev = &sc->sc_hw.devs[index].device_pc; + pcinp = &sc->sc_hw.devs[index].input_pc; + + usbd_get_page(pcdev, 0, &buf_dev); + usbd_get_page(pcinp, 0, &buf_inp); + + pdev = buf_dev.buffer; + pinp = buf_inp.buffer; + + rh_port = 0; + route = 0; + + /* figure out route string and root HUB port number */ + + for (hubdev = udev; hubdev != NULL; hubdev = hubdev->parent_hub) { + + if (hubdev->parent_hub == NULL) + break; + + /* + * NOTE: HS/FS/LS devices and the SS root HUB can have + * more than 15 ports + */ + + rh_port = hubdev->port_no; + + if (hubdev->parent_hub->parent_hub == NULL) + break; + + route *= 16; + + if (rh_port > 15) + route |= 15; + else + route |= rh_port; + } + + temp = XHCI_SCTX_0_ROUTE_SET(route); + + switch (sc->sc_hw.devs[index].state) { + case XHCI_ST_CONFIGURED: + temp |= XHCI_SCTX_0_CTX_NUM_SET(XHCI_MAX_ENDPOINTS - 1); + break; + default: + temp = XHCI_SCTX_0_CTX_NUM_SET(1); + break; + } + + switch (udev->speed) { + case USB_SPEED_LOW: + temp |= XHCI_SCTX_0_SPEED_SET(2); + break; + case USB_SPEED_HIGH: + temp |= XHCI_SCTX_0_SPEED_SET(3); + break; + case USB_SPEED_FULL: + temp |= XHCI_SCTX_0_SPEED_SET(1); + break; + default: + temp |= XHCI_SCTX_0_SPEED_SET(4); + break; + } + + is_hub = sc->sc_hw.devs[index].nports != 0 && + (udev->speed == USB_SPEED_SUPER || + udev->speed == USB_SPEED_HIGH); + + if (is_hub) { + temp |= XHCI_SCTX_0_HUB_SET(1); +#if 0 + if (udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) { + DPRINTF("HUB supports MTT\n"); + temp |= XHCI_SCTX_0_MTT_SET(1); + } +#endif + } + + pinp->ctx_slot.dwSctx0 = htole32(temp); + + temp = XHCI_SCTX_1_RH_PORT_SET(rh_port); + + if (is_hub) { + temp |= XHCI_SCTX_1_NUM_PORTS_SET( + sc->sc_hw.devs[index].nports); + } + + switch (udev->speed) { + case USB_SPEED_SUPER: + switch (sc->sc_hw.devs[index].state) { + case XHCI_ST_ADDRESSED: + case XHCI_ST_CONFIGURED: + /* enable power save */ + temp |= XHCI_SCTX_1_MAX_EL_SET(sc->sc_exit_lat_max); + break; + default: + /* disable power save */ + break; + } + break; + default: + break; + } + + pinp->ctx_slot.dwSctx1 = htole32(temp); + + temp = XHCI_SCTX_2_IRQ_TARGET_SET(0); + + if (is_hub) + temp |= XHCI_SCTX_2_TT_THINK_TIME_SET(sc->sc_hw.devs[index].tt); + + hubdev = udev->parent_hs_hub; + + /* check if we should activate the transaction translator */ + switch (udev->speed) { + case USB_SPEED_FULL: + case USB_SPEED_LOW: + if (hubdev != NULL) { + temp |= XHCI_SCTX_2_TT_HUB_SID_SET( + hubdev->controller_slot_id); + temp |= XHCI_SCTX_2_TT_PORT_NUM_SET( + udev->hs_port_no); + } + break; + default: + break; + } + + pinp->ctx_slot.dwSctx2 = htole32(temp); + + temp = XHCI_SCTX_3_DEV_ADDR_SET(udev->address) | + XHCI_SCTX_3_SLOT_STATE_SET(0); + + pinp->ctx_slot.dwSctx3 = htole32(temp); + +#ifdef USB_DEBUG + xhci_dump_device(&pinp->ctx_slot); +#endif + usb_pc_cpu_flush(pcinp); + + return (0); /* success */ +} + +static usb_error_t +xhci_alloc_device_ext(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct usb_page_search buf_dev; + struct usb_page_search buf_ep; + struct xhci_trb *trb; + struct usb_page_cache *pc; + struct usb_page *pg; + uint64_t addr; + uint8_t index; + uint8_t i; + + index = udev->controller_slot_id; + + pc = &sc->sc_hw.devs[index].device_pc; + pg = &sc->sc_hw.devs[index].device_pg; + + /* need to initialize the page cache */ + pc->tag_parent = sc->sc_bus.dma_parent_tag; + + if (usb_pc_alloc_mem(pc, pg, sizeof(struct xhci_dev_ctx), XHCI_PAGE_SIZE)) + goto error; + + usbd_get_page(pc, 0, &buf_dev); + + pc = &sc->sc_hw.devs[index].input_pc; + pg = &sc->sc_hw.devs[index].input_pg; + + /* need to initialize the page cache */ + pc->tag_parent = sc->sc_bus.dma_parent_tag; + + if (usb_pc_alloc_mem(pc, pg, sizeof(struct xhci_input_dev_ctx), XHCI_PAGE_SIZE)) + goto error; + + pc = &sc->sc_hw.devs[index].endpoint_pc; + pg = &sc->sc_hw.devs[index].endpoint_pg; + + /* need to initialize the page cache */ + pc->tag_parent = sc->sc_bus.dma_parent_tag; + + if (usb_pc_alloc_mem(pc, pg, sizeof(struct xhci_dev_endpoint_trbs), XHCI_PAGE_SIZE)) + goto error; + + /* initialise all endpoint LINK TRBs */ + + for (i = 0; i != XHCI_MAX_ENDPOINTS; i++) { + + /* lookup endpoint TRB ring */ + usbd_get_page(pc, (uintptr_t)&((struct xhci_dev_endpoint_trbs *)0)->trb[i][0], &buf_ep); + + /* get TRB pointer */ + trb = buf_ep.buffer; + trb += XHCI_MAX_TRANSFERS - 1; + + /* get TRB start address */ + addr = buf_ep.physaddr; + + /* create LINK TRB */ + trb->qwTrb0 = htole64(addr); + trb->dwTrb2 = htole32(XHCI_TRB_2_IRQ_SET(0)); + trb->dwTrb3 = htole32(XHCI_TRB_3_CYCLE_BIT | + XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK)); + } + + usb_pc_cpu_flush(pc); + + xhci_set_slot_pointer(sc, index, buf_dev.physaddr); + + return (0); + +error: + xhci_free_device_ext(udev); + + return (USB_ERR_NOMEM); +} + +static void +xhci_free_device_ext(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + uint8_t index; + + index = udev->controller_slot_id; + xhci_set_slot_pointer(sc, index, 0); + + usb_pc_free_mem(&sc->sc_hw.devs[index].device_pc); + usb_pc_free_mem(&sc->sc_hw.devs[index].input_pc); + usb_pc_free_mem(&sc->sc_hw.devs[index].endpoint_pc); +} + +static struct xhci_endpoint_ext * +xhci_get_endpoint_ext(struct usb_device *udev, struct usb_endpoint_descriptor *edesc) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct xhci_endpoint_ext *pepext; + struct usb_page_cache *pc; + struct usb_page_search buf_ep; + uint8_t epno; + uint8_t index; + + epno = edesc->bEndpointAddress; + if ((edesc->bmAttributes & UE_XFERTYPE) == UE_CONTROL) + epno |= UE_DIR_IN; + + epno = XHCI_EPNO2EPID(epno); + + index = udev->controller_slot_id; + + pc = &sc->sc_hw.devs[index].endpoint_pc; + + usbd_get_page(pc, (uintptr_t)&((struct xhci_dev_endpoint_trbs *)0)->trb[epno][0], &buf_ep); + + pepext = &sc->sc_hw.devs[index].endp[epno]; + pepext->page_cache = pc; + pepext->trb = buf_ep.buffer; + pepext->physaddr = buf_ep.physaddr; + + return (pepext); +} + +static void +xhci_endpoint_doorbell(struct usb_xfer *xfer) +{ + struct xhci_softc *sc = XHCI_BUS2SC(xfer->xroot->bus); + uint8_t epno; + uint8_t index; + + epno = xfer->endpointno; + if (xfer->flags_int.control_xfr) + epno |= UE_DIR_IN; + + epno = XHCI_EPNO2EPID(epno); + index = xfer->xroot->udev->controller_slot_id; + + if (xfer->xroot->udev->flags.self_suspended == 0) + XWRITE4(sc, door, XHCI_DOORBELL(index), epno | XHCI_DB_SID_SET(0)); +} + +static void +xhci_transfer_remove(struct usb_xfer *xfer, usb_error_t error) +{ + struct xhci_endpoint_ext *pepext; + + if (xfer->flags_int.bandwidth_reclaimed) { + xfer->flags_int.bandwidth_reclaimed = 0; + + pepext = xhci_get_endpoint_ext(xfer->xroot->udev, + xfer->endpoint->edesc); + + pepext->trb_used--; + + pepext->xfer[xfer->qh_pos] = NULL; + + if (error && pepext->trb_running != 0) { + pepext->trb_halted = 1; + pepext->trb_running = 0; + } + } +} + +static usb_error_t +xhci_transfer_insert(struct usb_xfer *xfer) +{ + struct xhci_td *td_first; + struct xhci_td *td_last; + struct xhci_endpoint_ext *pepext; + uint64_t addr; + uint8_t i; + uint8_t inext; + uint8_t trb_limit; + + DPRINTFN(8, "\n"); + + /* check if already inserted */ + if (xfer->flags_int.bandwidth_reclaimed) { + DPRINTFN(8, "Already in schedule\n"); + return (0); + } + + pepext = xhci_get_endpoint_ext(xfer->xroot->udev, + xfer->endpoint->edesc); + + td_first = xfer->td_transfer_first; + td_last = xfer->td_transfer_last; + addr = pepext->physaddr; + + switch (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE) { + case UE_CONTROL: + case UE_INTERRUPT: + /* single buffered */ + trb_limit = 1; + break; + default: + /* multi buffered */ + trb_limit = (XHCI_MAX_TRANSFERS - 2); + break; + } + + if (pepext->trb_used >= trb_limit) { + DPRINTFN(8, "Too many TDs queued.\n"); + return (USB_ERR_NOMEM); + } + + /* check for stopped condition, after putting transfer on interrupt queue */ + if (pepext->trb_running == 0) { + struct xhci_softc *sc = XHCI_BUS2SC(xfer->xroot->bus); + + DPRINTFN(8, "Not running\n"); + + /* start configuration */ + (void)usb_proc_msignal(&sc->sc_config_proc, + &sc->sc_config_msg[0], &sc->sc_config_msg[1]); + return (0); + } + + pepext->trb_used++; + + /* get current TRB index */ + i = pepext->trb_index; + + /* get next TRB index */ + inext = (i + 1); + + /* the last entry of the ring is a hardcoded link TRB */ + if (inext >= (XHCI_MAX_TRANSFERS - 1)) + inext = 0; + + /* compute terminating return address */ + addr += inext * sizeof(struct xhci_trb); + + /* update next pointer of last link TRB */ + td_last->td_trb[td_last->ntrb].qwTrb0 = htole64(addr); + td_last->td_trb[td_last->ntrb].dwTrb2 = htole32(XHCI_TRB_2_IRQ_SET(0)); + td_last->td_trb[td_last->ntrb].dwTrb3 = htole32(XHCI_TRB_3_IOC_BIT | + XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK)); + +#ifdef USB_DEBUG + xhci_dump_trb(&td_last->td_trb[td_last->ntrb]); +#endif + usb_pc_cpu_flush(td_last->page_cache); + + /* write ahead chain end marker */ + + pepext->trb[inext].qwTrb0 = 0; + pepext->trb[inext].dwTrb2 = 0; + pepext->trb[inext].dwTrb3 = 0; + + /* update next pointer of link TRB */ + + pepext->trb[i].qwTrb0 = htole64((uint64_t)td_first->td_self); + pepext->trb[i].dwTrb2 = htole32(XHCI_TRB_2_IRQ_SET(0)); + +#ifdef USB_DEBUG + xhci_dump_trb(&pepext->trb[i]); +#endif + usb_pc_cpu_flush(pepext->page_cache); + + /* toggle cycle bit which activates the transfer chain */ + + pepext->trb[i].dwTrb3 = htole32(XHCI_TRB_3_CYCLE_BIT | + XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_LINK)); + + usb_pc_cpu_flush(pepext->page_cache); + + DPRINTF("qh_pos = %u\n", i); + + pepext->xfer[i] = xfer; + + xfer->qh_pos = i; + + xfer->flags_int.bandwidth_reclaimed = 1; + + pepext->trb_index = inext; + + xhci_endpoint_doorbell(xfer); + + return (0); +} + +static void +xhci_root_intr(struct xhci_softc *sc) +{ + uint16_t i; + + USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED); + + /* clear any old interrupt data */ + memset(sc->sc_hub_idata, 0, sizeof(sc->sc_hub_idata)); + + for (i = 1; i <= sc->sc_noport; i++) { + /* pick out CHANGE bits from the status register */ + if (XREAD4(sc, oper, XHCI_PORTSC(i)) & ( + XHCI_PS_CSC | XHCI_PS_PEC | + XHCI_PS_OCC | XHCI_PS_WRC | + XHCI_PS_PRC | XHCI_PS_PLC | + XHCI_PS_CEC)) { + sc->sc_hub_idata[i / 8] |= 1 << (i % 8); + DPRINTF("port %d changed\n", i); + } + } + uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata, + sizeof(sc->sc_hub_idata)); +} + +/*------------------------------------------------------------------------* + * xhci_device_done - XHCI done handler + * + * NOTE: This function can be called two times in a row on + * the same USB transfer. From close and from interrupt. + *------------------------------------------------------------------------*/ +static void +xhci_device_done(struct usb_xfer *xfer, usb_error_t error) +{ + DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n", + xfer, xfer->endpoint, error); + + /* remove transfer from HW queue */ + xhci_transfer_remove(xfer, error); + + /* dequeue transfer and start next transfer */ + usbd_transfer_done(xfer, error); +} + +/*------------------------------------------------------------------------* + * XHCI data transfer support (generic type) + *------------------------------------------------------------------------*/ +static void +xhci_device_generic_open(struct usb_xfer *xfer) +{ + if (xfer->flags_int.isochronous_xfr) { + switch (xfer->xroot->udev->speed) { + case USB_SPEED_FULL: + break; + default: + usb_hs_bandwidth_alloc(xfer); + break; + } + } +} + +static void +xhci_device_generic_close(struct usb_xfer *xfer) +{ + DPRINTF("\n"); + + xhci_device_done(xfer, USB_ERR_CANCELLED); + + if (xfer->flags_int.isochronous_xfr) { + switch (xfer->xroot->udev->speed) { + case USB_SPEED_FULL: + break; + default: + usb_hs_bandwidth_free(xfer); + break; + } + } +} + +static void +xhci_device_generic_multi_enter(struct usb_endpoint *ep, + struct usb_xfer *enter_xfer) +{ + struct usb_xfer *xfer; + + /* check if there is a current transfer */ + xfer = ep->endpoint_q.curr; + if (xfer == NULL) + return; + + /* + * Check if the current transfer is started and then pickup + * the next one, if any. Else wait for next start event due to + * block on failure feature. + */ + if (!xfer->flags_int.bandwidth_reclaimed) + return; + + xfer = TAILQ_FIRST(&ep->endpoint_q.head); + if (xfer == NULL) { + /* + * In case of enter we have to consider that the + * transfer is queued by the USB core after the enter + * method is called. + */ + xfer = enter_xfer; + + if (xfer == NULL) + return; + } + + /* try to multi buffer */ + xhci_transfer_insert(xfer); +} + +static void +xhci_device_generic_enter(struct usb_xfer *xfer) +{ + DPRINTF("\n"); + + /* setup TD's and QH */ + xhci_setup_generic_chain(xfer); + + xhci_device_generic_multi_enter(xfer->endpoint, xfer); +} + +static void +xhci_device_generic_start(struct usb_xfer *xfer) +{ + DPRINTF("\n"); + + /* try to insert xfer on HW queue */ + xhci_transfer_insert(xfer); + + /* try to multi buffer */ + xhci_device_generic_multi_enter(xfer->endpoint, NULL); + + /* add transfer last on interrupt queue */ + usbd_transfer_enqueue(&xfer->xroot->bus->intr_q, xfer); + + /* start timeout, if any */ + if (xfer->timeout != 0) + usbd_transfer_timeout_ms(xfer, &xhci_timeout, xfer->timeout); +} + +struct usb_pipe_methods xhci_device_generic_methods = +{ + .open = xhci_device_generic_open, + .close = xhci_device_generic_close, + .enter = xhci_device_generic_enter, + .start = xhci_device_generic_start, +}; + +/*------------------------------------------------------------------------* + * xhci root HUB support + *------------------------------------------------------------------------* + * Simulate a hardware HUB by handling all the necessary requests. + *------------------------------------------------------------------------*/ + +#define HSETW(ptr, val) ptr[0] = (uint8_t)(val), ptr[1] = (uint8_t)((val) >> 8) + +static const +struct usb_device_descriptor xhci_devd = +{ + .bLength = sizeof(xhci_devd), + .bDescriptorType = UDESC_DEVICE, /* type */ + HSETW(.bcdUSB, 0x0300), /* USB version */ + .bDeviceClass = UDCLASS_HUB, /* class */ + .bDeviceSubClass = UDSUBCLASS_HUB, /* subclass */ + .bDeviceProtocol = UDPROTO_SSHUB, /* protocol */ + .bMaxPacketSize = 9, /* max packet size */ + HSETW(.idVendor, 0x0000), /* vendor */ + HSETW(.idProduct, 0x0000), /* product */ + HSETW(.bcdDevice, 0x0100), /* device version */ + .iManufacturer = 1, + .iProduct = 2, + .iSerialNumber = 0, + .bNumConfigurations = 1, /* # of configurations */ +}; + +static const +struct xhci_bos_desc xhci_bosd = { + .bosd = { + .bLength = sizeof(xhci_bosd.bosd), + .bDescriptorType = UDESC_BOS, + HSETW(.wTotalLength, sizeof(xhci_bosd)), + .bNumDeviceCaps = 3, + }, + .usb2extd = { + .bLength = sizeof(xhci_bosd.usb2extd), + .bDescriptorType = 1, + .bDevCapabilityType = 2, + .bmAttributes = 2, + }, + .usbdcd = { + .bLength = sizeof(xhci_bosd.usbdcd), + .bDescriptorType = UDESC_DEVICE_CAPABILITY, + .bDevCapabilityType = 3, + .bmAttributes = 0, /* XXX */ + HSETW(.wSpeedsSupported, 0x000C), + .bFunctionalitySupport = 8, + .bU1DevExitLat = 255, /* dummy - not used */ + .bU2DevExitLat = 255, /* dummy - not used */ + }, + .cidd = { + .bLength = sizeof(xhci_bosd.cidd), + .bDescriptorType = 1, + .bDevCapabilityType = 4, + .bReserved = 0, + .bContainerID = 0, /* XXX */ + }, +}; + +static const +struct xhci_config_desc xhci_confd = { + .confd = { + .bLength = sizeof(xhci_confd.confd), + .bDescriptorType = UDESC_CONFIG, + .wTotalLength[0] = sizeof(xhci_confd), + .bNumInterface = 1, + .bConfigurationValue = 1, + .iConfiguration = 0, + .bmAttributes = UC_SELF_POWERED, + .bMaxPower = 0 /* max power */ + }, + .ifcd = { + .bLength = sizeof(xhci_confd.ifcd), + .bDescriptorType = UDESC_INTERFACE, + .bNumEndpoints = 1, + .bInterfaceClass = UICLASS_HUB, + .bInterfaceSubClass = UISUBCLASS_HUB, + .bInterfaceProtocol = 0, + }, + .endpd = { + .bLength = sizeof(xhci_confd.endpd), + .bDescriptorType = UDESC_ENDPOINT, + .bEndpointAddress = UE_DIR_IN | XHCI_INTR_ENDPT, + .bmAttributes = UE_INTERRUPT, + .wMaxPacketSize[0] = 2, /* max 15 ports */ + .bInterval = 255, + }, + .endpcd = { + .bLength = sizeof(xhci_confd.endpcd), + .bDescriptorType = UDESC_ENDPOINT_SS_COMP, + .bMaxBurst = 0, + .bmAttributes = 0, + }, +}; + +static const +struct usb_hub_ss_descriptor xhci_hubd = { + .bLength = sizeof(xhci_hubd), + .bDescriptorType = UDESC_SS_HUB, +}; + +static usb_error_t +xhci_roothub_exec(struct usb_device *udev, + struct usb_device_request *req, const void **pptr, uint16_t *plength) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + const char *str_ptr; + const void *ptr; + uint32_t port; + uint32_t v; + uint16_t len; + uint16_t i; + uint16_t value; + uint16_t index; + uint8_t j; + usb_error_t err; + + USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED); + + /* buffer reset */ + ptr = (const void *)&sc->sc_hub_desc; + len = 0; + err = 0; + + value = UGETW(req->wValue); + index = UGETW(req->wIndex); + + DPRINTFN(3, "type=0x%02x request=0x%02x wLen=0x%04x " + "wValue=0x%04x wIndex=0x%04x\n", + req->bmRequestType, req->bRequest, + UGETW(req->wLength), value, index); + +#define C(x,y) ((x) | ((y) << 8)) + switch (C(req->bRequest, req->bmRequestType)) { + case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE): + case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE): + case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT): + /* + * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops + * for the integrated root hub. + */ + break; + case C(UR_GET_CONFIG, UT_READ_DEVICE): + len = 1; + sc->sc_hub_desc.temp[0] = sc->sc_conf; + break; + case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): + switch (value >> 8) { + case UDESC_DEVICE: + if ((value & 0xff) != 0) { + err = USB_ERR_IOERROR; + goto done; + } + len = sizeof(xhci_devd); + ptr = (const void *)&xhci_devd; + break; + + case UDESC_BOS: + if ((value & 0xff) != 0) { + err = USB_ERR_IOERROR; + goto done; + } + len = sizeof(xhci_bosd); + ptr = (const void *)&xhci_bosd; + break; + + case UDESC_CONFIG: + if ((value & 0xff) != 0) { + err = USB_ERR_IOERROR; + goto done; + } + len = sizeof(xhci_confd); + ptr = (const void *)&xhci_confd; + break; + + case UDESC_STRING: + switch (value & 0xff) { + case 0: /* Language table */ + str_ptr = "\001"; + break; + + case 1: /* Vendor */ + str_ptr = sc->sc_vendor; + break; + + case 2: /* Product */ + str_ptr = "XHCI root HUB"; + break; + + default: + str_ptr = ""; + break; + } + + len = usb_make_str_desc( + sc->sc_hub_desc.temp, + sizeof(sc->sc_hub_desc.temp), + str_ptr); + break; + + default: + err = USB_ERR_IOERROR; + goto done; + } + break; + case C(UR_GET_INTERFACE, UT_READ_INTERFACE): + len = 1; + sc->sc_hub_desc.temp[0] = 0; + break; + case C(UR_GET_STATUS, UT_READ_DEVICE): + len = 2; + USETW(sc->sc_hub_desc.stat.wStatus, UDS_SELF_POWERED); + break; + case C(UR_GET_STATUS, UT_READ_INTERFACE): + case C(UR_GET_STATUS, UT_READ_ENDPOINT): + len = 2; + USETW(sc->sc_hub_desc.stat.wStatus, 0); + break; + case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): + if (value >= XHCI_MAX_DEVICES) { + err = USB_ERR_IOERROR; + goto done; + } + break; + case C(UR_SET_CONFIG, UT_WRITE_DEVICE): + if (value != 0 && value != 1) { + err = USB_ERR_IOERROR; + goto done; + } + sc->sc_conf = value; + break; + case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE): + break; + case C(UR_SET_FEATURE, UT_WRITE_DEVICE): + case C(UR_SET_FEATURE, UT_WRITE_INTERFACE): + case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT): + err = USB_ERR_IOERROR; + goto done; + case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE): + break; + case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT): + break; + /* Hub requests */ + case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE): + break; + case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER): + DPRINTFN(9, "UR_CLEAR_PORT_FEATURE\n"); + + if ((index < 1) || + (index > sc->sc_noport)) { + err = USB_ERR_IOERROR; + goto done; + } + port = XHCI_PORTSC(index); + + v = XREAD4(sc, oper, port) & ~XHCI_PS_CLEAR; + + switch (value) { + case UHF_C_BH_PORT_RESET: + XWRITE4(sc, oper, port, v | XHCI_PS_WRC); + break; + case UHF_C_PORT_CONFIG_ERROR: + XWRITE4(sc, oper, port, v | XHCI_PS_CEC); + break; + case UHF_C_PORT_LINK_STATE: + XWRITE4(sc, oper, port, v | XHCI_PS_PLC); + break; + case UHF_C_PORT_CONNECTION: + XWRITE4(sc, oper, port, v | XHCI_PS_CSC); + break; + case UHF_C_PORT_ENABLE: + XWRITE4(sc, oper, port, v | XHCI_PS_PEC); + break; + case UHF_C_PORT_OVER_CURRENT: + XWRITE4(sc, oper, port, v | XHCI_PS_OCC); + break; + case UHF_C_PORT_RESET: + XWRITE4(sc, oper, port, v | XHCI_PS_PRC); + break; + case UHF_PORT_ENABLE: + XWRITE4(sc, oper, port, v | XHCI_PS_PED); + break; + case UHF_PORT_POWER: + XWRITE4(sc, oper, port, v & ~XHCI_PS_PP); + break; + case UHF_PORT_INDICATOR: + XWRITE4(sc, oper, port, v & ~XHCI_PS_PIC_SET(3)); + break; + case UHF_PORT_SUSPEND: + XWRITE4(sc, oper, port, v | + XHCI_PS_PLS_SET(0) | XHCI_PS_LWS); + break; + default: + err = USB_ERR_IOERROR; + goto done; + } + break; + + case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): + if ((value & 0xff) != 0) { + err = USB_ERR_IOERROR; + goto done; + } + + v = XREAD4(sc, capa, XHCI_HCSPARAMS0); + + sc->sc_hub_desc.hubd = xhci_hubd; + + sc->sc_hub_desc.hubd.bNbrPorts = sc->sc_noport; + + if (XHCI_HCS0_PPC(v)) + i = UHD_PWR_INDIVIDUAL; + else + i = UHD_PWR_GANGED; + + if (XHCI_HCS0_PIND(v)) + i |= UHD_PORT_IND; + + i |= UHD_OC_INDIVIDUAL; + + USETW(sc->sc_hub_desc.hubd.wHubCharacteristics, i); + + /* see XHCI section 5.4.9: */ + sc->sc_hub_desc.hubd.bPwrOn2PwrGood = 10; + + for (j = 1; j <= sc->sc_noport; j++) { + + v = XREAD4(sc, oper, XHCI_PORTSC(j)); + if (v & XHCI_PS_DR) { + sc->sc_hub_desc.hubd. + DeviceRemovable[j / 8] |= 1U << (j % 8); + } + } + len = sc->sc_hub_desc.hubd.bLength; + break; + + case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): + len = 16; + memset(sc->sc_hub_desc.temp, 0, 16); + break; + + case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): + DPRINTFN(9, "UR_GET_STATUS i=%d\n", index); + + if ((index < 1) || + (index > sc->sc_noport)) { + err = USB_ERR_IOERROR; + goto done; + } + + v = XREAD4(sc, oper, XHCI_PORTSC(index)); + + DPRINTFN(9, "port status=0x%08x\n", v); + + i = UPS_PORT_LINK_STATE_SET(XHCI_PS_PLS_GET(v)); + + switch (XHCI_PS_SPEED_GET(v)) { + case 3: + i |= UPS_HIGH_SPEED; + break; + case 2: + i |= UPS_LOW_SPEED; + break; + case 1: + /* FULL speed */ + break; + default: + i |= UPS_OTHER_SPEED; + break; + } + + if (v & XHCI_PS_CCS) + i |= UPS_CURRENT_CONNECT_STATUS; + if (v & XHCI_PS_PED) + i |= UPS_PORT_ENABLED; + if (v & XHCI_PS_OCA) + i |= UPS_OVERCURRENT_INDICATOR; + if (v & XHCI_PS_PR) + i |= UPS_RESET; + if (v & XHCI_PS_PP) + i |= UPS_PORT_POWER; + USETW(sc->sc_hub_desc.ps.wPortStatus, i); + + i = 0; + if (v & XHCI_PS_CSC) + i |= UPS_C_CONNECT_STATUS; + if (v & XHCI_PS_PEC) + i |= UPS_C_PORT_ENABLED; + if (v & XHCI_PS_OCC) + i |= UPS_C_OVERCURRENT_INDICATOR; + if (v & XHCI_PS_WRC) + i |= UPS_C_BH_PORT_RESET; + if (v & XHCI_PS_PRC) + i |= UPS_C_PORT_RESET; + if (v & XHCI_PS_PLC) + i |= UPS_C_PORT_LINK_STATE; + if (v & XHCI_PS_CEC) + i |= UPS_C_PORT_CONFIG_ERROR; + + USETW(sc->sc_hub_desc.ps.wPortChange, i); + len = sizeof(sc->sc_hub_desc.ps); + break; + + case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): + err = USB_ERR_IOERROR; + goto done; + + case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): + break; + + case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): + + i = index >> 8; + index &= 0x00FF; + + if ((index < 1) || + (index > sc->sc_noport)) { + err = USB_ERR_IOERROR; + goto done; + } + + port = XHCI_PORTSC(index); + v = XREAD4(sc, oper, port) & ~XHCI_PS_CLEAR; + + switch (value) { + case UHF_PORT_U1_TIMEOUT: + if (XHCI_PS_SPEED_GET(v) != 4) { + err = USB_ERR_IOERROR; + goto done; + } + port = XHCI_PORTPMSC(index); + v = XREAD4(sc, oper, port); + v &= ~XHCI_PM3_U1TO_SET(0xFF); + v |= XHCI_PM3_U1TO_SET(i); + XWRITE4(sc, oper, port, v); + break; + case UHF_PORT_U2_TIMEOUT: + if (XHCI_PS_SPEED_GET(v) != 4) { + err = USB_ERR_IOERROR; + goto done; + } + port = XHCI_PORTPMSC(index); + v = XREAD4(sc, oper, port); + v &= ~XHCI_PM3_U2TO_SET(0xFF); + v |= XHCI_PM3_U2TO_SET(i); + XWRITE4(sc, oper, port, v); + break; + case UHF_BH_PORT_RESET: + XWRITE4(sc, oper, port, v | XHCI_PS_WPR); + break; + case UHF_PORT_LINK_STATE: + XWRITE4(sc, oper, port, v | + XHCI_PS_PLS_SET(i) | XHCI_PS_LWS); + /* 4ms settle time */ + usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 250); + break; + case UHF_PORT_ENABLE: + DPRINTFN(3, "set port enable %d\n", index); + break; + case UHF_PORT_SUSPEND: + DPRINTFN(6, "suspend port %u (LPM=%u)\n", index, i); + j = XHCI_PS_SPEED_GET(v); + if ((j < 1) || (j > 3)) { + /* non-supported speed */ + err = USB_ERR_IOERROR; + goto done; + } + XWRITE4(sc, oper, port, v | + XHCI_PS_PLS_SET(i ? 2 /* LPM */ : 3) | XHCI_PS_LWS); + break; + case UHF_PORT_RESET: + DPRINTFN(6, "reset port %d\n", index); + XWRITE4(sc, oper, port, v | XHCI_PS_PR); + break; + case UHF_PORT_POWER: + DPRINTFN(3, "set port power %d\n", index); + XWRITE4(sc, oper, port, v | XHCI_PS_PP); + break; + case UHF_PORT_TEST: + DPRINTFN(3, "set port test %d\n", index); + break; + case UHF_PORT_INDICATOR: + DPRINTFN(3, "set port indicator %d\n", index); + + v &= ~XHCI_PS_PIC_SET(3); + v |= XHCI_PS_PIC_SET(1); + + XWRITE4(sc, oper, port, v); + break; + default: + err = USB_ERR_IOERROR; + goto done; + } + break; + + case C(UR_CLEAR_TT_BUFFER, UT_WRITE_CLASS_OTHER): + case C(UR_RESET_TT, UT_WRITE_CLASS_OTHER): + case C(UR_GET_TT_STATE, UT_READ_CLASS_OTHER): + case C(UR_STOP_TT, UT_WRITE_CLASS_OTHER): + break; + default: + err = USB_ERR_IOERROR; + goto done; + } +done: + *plength = len; + *pptr = ptr; + return (err); +} + +static void +xhci_xfer_setup(struct usb_setup_params *parm) +{ + struct usb_page_search page_info; + struct usb_page_cache *pc; + struct xhci_softc *sc; + struct usb_xfer *xfer; + void *last_obj; + uint32_t ntd; + uint32_t n; + + sc = XHCI_BUS2SC(parm->udev->bus); + xfer = parm->curr_xfer; + + /* + * The proof for the "ntd" formula is illustrated like this: + * + * +------------------------------------+ + * | | + * | |remainder -> | + * | +-----+---+ | + * | | xxx | x | frm 0 | + * | +-----+---++ | + * | | xxx | xx | frm 1 | + * | +-----+----+ | + * | ... | + * +------------------------------------+ + * + * "xxx" means a completely full USB transfer descriptor + * + * "x" and "xx" means a short USB packet + * + * For the remainder of an USB transfer modulo + * "max_data_length" we need two USB transfer descriptors. + * One to transfer the remaining data and one to finalise with + * a zero length packet in case the "force_short_xfer" flag is + * set. We only need two USB transfer descriptors in the case + * where the transfer length of the first one is a factor of + * "max_frame_size". The rest of the needed USB transfer + * descriptors is given by the buffer size divided by the + * maximum data payload. + */ + parm->hc_max_packet_size = 0x400; + parm->hc_max_packet_count = 16 * 3; + parm->hc_max_frame_size = XHCI_TD_PAYLOAD_MAX; + + xfer->flags_int.bdma_enable = 1; + + usbd_transfer_setup_sub(parm); + + if (xfer->flags_int.isochronous_xfr) { + ntd = ((1 * xfer->nframes) + + (xfer->max_data_length / xfer->max_hc_frame_size)); + } else if (xfer->flags_int.control_xfr) { + ntd = ((2 * xfer->nframes) + 1 /* STATUS */ + + (xfer->max_data_length / xfer->max_hc_frame_size)); + } else { + ntd = ((2 * xfer->nframes) + + (xfer->max_data_length / xfer->max_hc_frame_size)); + } + +alloc_dma_set: + + if (parm->err) + return; + + /* + * Allocate queue heads and transfer descriptors + */ + last_obj = NULL; + + if (usbd_transfer_setup_sub_malloc( + parm, &pc, sizeof(struct xhci_td), + XHCI_TD_ALIGN, ntd)) { + parm->err = USB_ERR_NOMEM; + return; + } + if (parm->buf) { + for (n = 0; n != ntd; n++) { + struct xhci_td *td; + + usbd_get_page(pc + n, 0, &page_info); + + td = page_info.buffer; + + /* init TD */ + td->td_self = page_info.physaddr; + td->obj_next = last_obj; + td->page_cache = pc + n; + + last_obj = td; + + usb_pc_cpu_flush(pc + n); + } + } + xfer->td_start[xfer->flags_int.curr_dma_set] = last_obj; + + if (!xfer->flags_int.curr_dma_set) { + xfer->flags_int.curr_dma_set = 1; + goto alloc_dma_set; + } +} + +static usb_error_t +xhci_configure_reset_endpoint(struct usb_xfer *xfer) +{ + struct xhci_softc *sc = XHCI_BUS2SC(xfer->xroot->bus); + struct usb_page_search buf_dev; + struct usb_page_search buf_inp; + struct usb_device *udev; + struct xhci_endpoint_ext *pepext; + struct usb_endpoint_descriptor *edesc; + struct xhci_dev_ctx *pdctx; + struct usb_page_cache *pcdev; + struct usb_page_cache *pcinp; + usb_error_t err; + uint8_t index; + uint8_t epno; + + pepext = xhci_get_endpoint_ext(xfer->xroot->udev, + xfer->endpoint->edesc); + + udev = xfer->xroot->udev; + index = udev->controller_slot_id; + + pcdev = &sc->sc_hw.devs[index].device_pc; + pcinp = &sc->sc_hw.devs[index].input_pc; + + usbd_get_page(pcdev, 0, &buf_dev); + usbd_get_page(pcinp, 0, &buf_inp); + + pdctx = buf_dev.buffer; + + edesc = xfer->endpoint->edesc; + + epno = edesc->bEndpointAddress; + + if ((edesc->bmAttributes & UE_XFERTYPE) == UE_CONTROL) + epno |= UE_DIR_IN; + + epno = XHCI_EPNO2EPID(epno); + + if (epno == 0) + return (USB_ERR_NO_PIPE); /* invalid */ + + XHCI_CMD_LOCK(sc); + + /* configure endpoint */ + + err = xhci_configure_endpoint_by_xfer(xfer); + + if (err != 0) { + XHCI_CMD_UNLOCK(sc); + return (err); + } + + /* + * Get the endpoint into the stopped state according to the + * endpoint context state diagram in the XHCI specification: + */ + + err = xhci_cmd_stop_ep(sc, 0, epno, index); + + if (err != 0) + DPRINTF("Could not stop endpoint %u\n", epno); + + err = xhci_cmd_reset_ep(sc, 0, epno, index); + + if (err != 0) + DPRINTF("Could not reset endpoint %u\n", epno); + + err = xhci_cmd_set_tr_dequeue_ptr(sc, pepext->physaddr | + XHCI_EPCTX_2_DCS_SET(1), 0, epno, index); + + if (err != 0) + DPRINTF("Could not set dequeue ptr for endpoint %u\n", epno); + + /* + * Get the endpoint into the running state according to the + * endpoint context state diagram in the XHCI specification: + */ + + xhci_configure_mask(udev, 1U << epno, 0); + + err = xhci_cmd_evaluate_ctx(sc, buf_inp.physaddr, index); + + if (err != 0) + DPRINTF("Could not configure endpoint %u\n", epno); + + err = xhci_cmd_configure_ep(sc, buf_inp.physaddr, 0, index); + + if (err != 0) + DPRINTF("Could not configure endpoint %u\n", epno); + + XHCI_CMD_UNLOCK(sc); + + return (0); +} + +static void +xhci_xfer_unsetup(struct usb_xfer *xfer) +{ + return; +} + +static void +xhci_start_dma_delay(struct usb_xfer *xfer) +{ + struct xhci_softc *sc = XHCI_BUS2SC(xfer->xroot->bus); + + /* put transfer on interrupt queue (again) */ + usbd_transfer_enqueue(&sc->sc_bus.intr_q, xfer); + + (void)usb_proc_msignal(&sc->sc_config_proc, + &sc->sc_config_msg[0], &sc->sc_config_msg[1]); +} + +static void +xhci_configure_msg(struct usb_proc_msg *pm) +{ + struct xhci_softc *sc; + struct xhci_endpoint_ext *pepext; + struct usb_xfer *xfer; + + sc = XHCI_BUS2SC(((struct usb_bus_msg *)pm)->bus); + +restart: + TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { + + pepext = xhci_get_endpoint_ext(xfer->xroot->udev, + xfer->endpoint->edesc); + + if ((pepext->trb_halted != 0) || + (pepext->trb_running == 0)) { + + uint8_t i; + + /* clear halted and running */ + pepext->trb_halted = 0; + pepext->trb_running = 0; + + /* nuke remaining buffered transfers */ + + for (i = 0; i != (XHCI_MAX_TRANSFERS - 1); i++) { + /* + * NOTE: We need to use the timeout + * error code here else existing + * isochronous clients can get + * confused: + */ + if (pepext->xfer[i] != NULL) { + xhci_device_done(pepext->xfer[i], + USB_ERR_TIMEOUT); + } + } + + /* + * NOTE: The USB transfer cannot vanish in + * this state! + */ + + USB_BUS_UNLOCK(&sc->sc_bus); + + xhci_configure_reset_endpoint(xfer); + + USB_BUS_LOCK(&sc->sc_bus); + + /* check if halted is still cleared */ + if (pepext->trb_halted == 0) { + pepext->trb_running = 1; + pepext->trb_index = 0; + } + goto restart; + } + + if (xfer->flags_int.did_dma_delay) { + + /* remove transfer from interrupt queue (again) */ + usbd_transfer_dequeue(xfer); + + /* we are finally done */ + usb_dma_delay_done_cb(xfer); + + /* queue changed - restart */ + goto restart; + } + } + + TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) { + + /* try to insert xfer on HW queue */ + xhci_transfer_insert(xfer); + + /* try to multi buffer */ + xhci_device_generic_multi_enter(xfer->endpoint, NULL); + } +} + +static void +xhci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc, + struct usb_endpoint *ep) +{ + struct xhci_endpoint_ext *pepext; + + DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d\n", + ep, udev->address, edesc->bEndpointAddress, udev->flags.usb_mode); + + if (udev->flags.usb_mode != USB_MODE_HOST) { + /* not supported */ + return; + } + if (udev->parent_hub == NULL) { + /* root HUB has special endpoint handling */ + return; + } + + ep->methods = &xhci_device_generic_methods; + + pepext = xhci_get_endpoint_ext(udev, edesc); + + USB_BUS_LOCK(udev->bus); + pepext->trb_halted = 1; + pepext->trb_running = 0; + USB_BUS_UNLOCK(udev->bus); +} + +static void +xhci_ep_uninit(struct usb_device *udev, struct usb_endpoint *ep) +{ + +} + +static void +xhci_ep_clear_stall(struct usb_device *udev, struct usb_endpoint *ep) +{ + struct xhci_endpoint_ext *pepext; + + DPRINTF("\n"); + + if (udev->flags.usb_mode != USB_MODE_HOST) { + /* not supported */ + return; + } + if (udev->parent_hub == NULL) { + /* root HUB has special endpoint handling */ + return; + } + + pepext = xhci_get_endpoint_ext(udev, ep->edesc); + + USB_BUS_LOCK(udev->bus); + pepext->trb_halted = 1; + pepext->trb_running = 0; + USB_BUS_UNLOCK(udev->bus); +} + +static usb_error_t +xhci_device_init(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + usb_error_t err; + uint8_t temp; + + /* no init for root HUB */ + if (udev->parent_hub == NULL) + return (0); + + XHCI_CMD_LOCK(sc); + + /* set invalid default */ + + udev->controller_slot_id = sc->sc_noslot + 1; + + /* try to get a new slot ID from the XHCI */ + + err = xhci_cmd_enable_slot(sc, &temp); + + if (err) { + XHCI_CMD_UNLOCK(sc); + return (err); + } + + if (temp > sc->sc_noslot) { + XHCI_CMD_UNLOCK(sc); + return (USB_ERR_BAD_ADDRESS); + } + + if (sc->sc_hw.devs[temp].state != XHCI_ST_DISABLED) { + DPRINTF("slot %u already allocated.\n", temp); + XHCI_CMD_UNLOCK(sc); + return (USB_ERR_BAD_ADDRESS); + } + + /* store slot ID for later reference */ + + udev->controller_slot_id = temp; + + /* reset data structure */ + + memset(&sc->sc_hw.devs[temp], 0, sizeof(sc->sc_hw.devs[0])); + + /* set mark slot allocated */ + + sc->sc_hw.devs[temp].state = XHCI_ST_ENABLED; + + err = xhci_alloc_device_ext(udev); + + XHCI_CMD_UNLOCK(sc); + + /* get device into default state */ + + if (err == 0) + err = xhci_set_address(udev, NULL, 0); + + return (err); +} + +static void +xhci_device_uninit(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + uint8_t index; + + /* no init for root HUB */ + if (udev->parent_hub == NULL) + return; + + XHCI_CMD_LOCK(sc); + + index = udev->controller_slot_id; + + if (index <= sc->sc_noslot) { + xhci_cmd_disable_slot(sc, index); + sc->sc_hw.devs[index].state = XHCI_ST_DISABLED; + + /* free device extension */ + xhci_free_device_ext(udev); + } + + XHCI_CMD_UNLOCK(sc); +} + +static void +xhci_get_dma_delay(struct usb_device *udev, uint32_t *pus) +{ + /* + * Wait until the hardware has finished any possible use of + * the transfer descriptor(s) + */ + *pus = 2048; /* microseconds */ +} + +static void +xhci_device_resume(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + uint8_t index; + uint8_t n; + + DPRINTF("\n"); + + /* check for root HUB */ + if (udev->parent_hub == NULL) + return; + + index = udev->controller_slot_id; + + XHCI_CMD_LOCK(sc); + + /* blindly resume all endpoints */ + + USB_BUS_LOCK(udev->bus); + + for (n = 1; n != XHCI_MAX_ENDPOINTS; n++) + XWRITE4(sc, door, XHCI_DOORBELL(index), n | XHCI_DB_SID_SET(0)); + + USB_BUS_UNLOCK(udev->bus); + + XHCI_CMD_UNLOCK(sc); +} + +static void +xhci_device_suspend(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + uint8_t index; + uint8_t n; + usb_error_t err; + + DPRINTF("\n"); + + /* check for root HUB */ + if (udev->parent_hub == NULL) + return; + + index = udev->controller_slot_id; + + XHCI_CMD_LOCK(sc); + + /* blindly suspend all endpoints */ + + for (n = 1; n != XHCI_MAX_ENDPOINTS; n++) { + err = xhci_cmd_stop_ep(sc, 1, n, index); + if (err != 0) { + DPRINTF("Failed to suspend endpoint " + "%u on slot %u (ignored).\n", n, index); + } + } + + XHCI_CMD_UNLOCK(sc); +} + +static void +xhci_set_hw_power(struct usb_bus *bus) +{ + DPRINTF("\n"); +} + +static void +xhci_device_state_change(struct usb_device *udev) +{ + struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); + struct usb_page_search buf_inp; + usb_error_t err; + uint8_t index; + + /* check for root HUB */ + if (udev->parent_hub == NULL) + return; + + index = udev->controller_slot_id; + + DPRINTF("\n"); + + if (usb_get_device_state(udev) == USB_STATE_CONFIGURED) { + err = uhub_query_info(udev, &sc->sc_hw.devs[index].nports, + &sc->sc_hw.devs[index].tt); + if (err != 0) + sc->sc_hw.devs[index].nports = 0; + } + + XHCI_CMD_LOCK(sc); + + switch (usb_get_device_state(udev)) { + case USB_STATE_POWERED: + if (sc->sc_hw.devs[index].state == XHCI_ST_DEFAULT) + break; + + sc->sc_hw.devs[index].state = XHCI_ST_DEFAULT; + + err = xhci_cmd_reset_dev(sc, index); + + if (err != 0) { + DPRINTF("Device reset failed " + "for slot %u.\n", index); + } + break; + + case USB_STATE_ADDRESSED: + if (sc->sc_hw.devs[index].state == XHCI_ST_ADDRESSED) + break; + + sc->sc_hw.devs[index].state = XHCI_ST_ADDRESSED; + + err = xhci_cmd_configure_ep(sc, 0, 1, index); + + if (err) { + DPRINTF("Failed to deconfigure " + "slot %u.\n", index); + } + break; + + case USB_STATE_CONFIGURED: + if (sc->sc_hw.devs[index].state == XHCI_ST_CONFIGURED) + break; + + sc->sc_hw.devs[index].state = XHCI_ST_CONFIGURED; + + usbd_get_page(&sc->sc_hw.devs[index].input_pc, 0, &buf_inp); + + xhci_configure_mask(udev, 1, 0); + + err = xhci_configure_device(udev); + if (err != 0) { + DPRINTF("Could not configure device " + "at slot %u.\n", index); + } + + err = xhci_cmd_evaluate_ctx(sc, buf_inp.physaddr, index); + if (err != 0) { + DPRINTF("Could not evaluate device " + "context at slot %u.\n", index); + } + break; + + default: + break; + } + XHCI_CMD_UNLOCK(sc); +} + +struct usb_bus_methods xhci_bus_methods = { + .endpoint_init = xhci_ep_init, + .endpoint_uninit = xhci_ep_uninit, + .xfer_setup = xhci_xfer_setup, + .xfer_unsetup = xhci_xfer_unsetup, + .get_dma_delay = xhci_get_dma_delay, + .device_init = xhci_device_init, + .device_uninit = xhci_device_uninit, + .device_resume = xhci_device_resume, + .device_suspend = xhci_device_suspend, + .set_hw_power = xhci_set_hw_power, + .roothub_exec = xhci_roothub_exec, + .xfer_poll = xhci_do_poll, + .start_dma_delay = xhci_start_dma_delay, + .set_address = xhci_set_address, + .clear_stall = xhci_ep_clear_stall, + .device_state_change = xhci_device_state_change, +}; |
