Index: head/sys/dev/usb/controller/xhci.c =================================================================== --- head/sys/dev/usb/controller/xhci.c (revision 358737) +++ head/sys/dev/usb/controller/xhci.c (revision 358738) @@ -1,4392 +1,4389 @@ /* $FreeBSD$ */ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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 achieve that the USB controller drivers look similar to * eachother which makes it easier to understand the code. */ #ifdef USB_GLOBAL_INCLUDE_FILE #include USB_GLOBAL_INCLUDE_FILE #else #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR xhcidebug #include #include #include #include #include #include #include #include #include #include #endif /* USB_GLOBAL_INCLUDE_FILE */ #include #include #define XHCI_BUS2SC(bus) \ ((struct xhci_softc *)(((uint8_t *)(bus)) - \ ((uint8_t *)&(((struct xhci_softc *)0)->sc_bus)))) static SYSCTL_NODE(_hw_usb, OID_AUTO, xhci, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "USB XHCI"); static int xhcistreams; SYSCTL_INT(_hw_usb_xhci, OID_AUTO, streams, CTLFLAG_RWTUN, &xhcistreams, 0, "Set to enable streams mode support"); static int xhcictlquirk = 1; SYSCTL_INT(_hw_usb_xhci, OID_AUTO, ctlquirk, CTLFLAG_RWTUN, &xhcictlquirk, 0, "Set to enable control endpoint quirk"); #ifdef USB_DEBUG static int xhcidebug; static int xhciroute; static int xhcipolling; static int xhcidma32; static int xhcictlstep; SYSCTL_INT(_hw_usb_xhci, OID_AUTO, debug, CTLFLAG_RWTUN, &xhcidebug, 0, "Debug level"); SYSCTL_INT(_hw_usb_xhci, OID_AUTO, xhci_port_route, CTLFLAG_RWTUN, &xhciroute, 0, "Routing bitmap for switching EHCI ports to the XHCI controller"); SYSCTL_INT(_hw_usb_xhci, OID_AUTO, use_polling, CTLFLAG_RWTUN, &xhcipolling, 0, "Set to enable software interrupt polling for the XHCI controller"); SYSCTL_INT(_hw_usb_xhci, OID_AUTO, dma32, CTLFLAG_RWTUN, &xhcidma32, 0, "Set to only use 32-bit DMA for the XHCI controller"); SYSCTL_INT(_hw_usb_xhci, OID_AUTO, ctlstep, CTLFLAG_RWTUN, &xhcictlstep, 0, "Set to enable control endpoint status stage stepping"); #else #define xhciroute 0 #define xhcidma32 0 #define xhcictlstep 0 #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; uint8_t do_isoc_sync; }; 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 *, struct xhci_endpoint_ext *, uint16_t, uint8_t, uint8_t, uint8_t, uint16_t, uint16_t, uint8_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 *); static void xhci_ctx_set_le32(struct xhci_softc *sc, volatile uint32_t *ptr, uint32_t val); static uint32_t xhci_ctx_get_le32(struct xhci_softc *sc, volatile uint32_t *ptr); static void xhci_ctx_set_le64(struct xhci_softc *sc, volatile uint64_t *ptr, uint64_t val); #ifdef USB_DEBUG static uint64_t xhci_ctx_get_le64(struct xhci_softc *sc, volatile uint64_t *ptr); #endif static const 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_softc *sc, struct xhci_endp_ctx *pep) { DPRINTFN(5, "pep = %p\n", pep); DPRINTFN(5, "dwEpCtx0=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx0)); DPRINTFN(5, "dwEpCtx1=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx1)); DPRINTFN(5, "qwEpCtx2=0x%016llx\n", (long long)xhci_ctx_get_le64(sc, &pep->qwEpCtx2)); DPRINTFN(5, "dwEpCtx4=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx4)); DPRINTFN(5, "dwEpCtx5=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx5)); DPRINTFN(5, "dwEpCtx6=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx6)); DPRINTFN(5, "dwEpCtx7=0x%08x\n", xhci_ctx_get_le32(sc, &pep->dwEpCtx7)); } static void xhci_dump_device(struct xhci_softc *sc, struct xhci_slot_ctx *psl) { DPRINTFN(5, "psl = %p\n", psl); DPRINTFN(5, "dwSctx0=0x%08x\n", xhci_ctx_get_le32(sc, &psl->dwSctx0)); DPRINTFN(5, "dwSctx1=0x%08x\n", xhci_ctx_get_le32(sc, &psl->dwSctx1)); DPRINTFN(5, "dwSctx2=0x%08x\n", xhci_ctx_get_le32(sc, &psl->dwSctx2)); DPRINTFN(5, "dwSctx3=0x%08x\n", xhci_ctx_get_le32(sc, &psl->dwSctx3)); } #endif uint8_t xhci_use_polling(void) { #ifdef USB_DEBUG return (xhcipolling != 0); #else return (0); #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); uint16_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 != sc->sc_noscratch; i++) { cb(bus, &sc->sc_hw.scratch_pc[i], &sc->sc_hw.scratch_pg[i], XHCI_PAGE_SIZE, XHCI_PAGE_SIZE); } } static void xhci_ctx_set_le32(struct xhci_softc *sc, volatile uint32_t *ptr, uint32_t val) { if (sc->sc_ctx_is_64_byte) { uint32_t offset; /* exploit the fact that our structures are XHCI_PAGE_SIZE aligned */ /* all contexts are initially 32-bytes */ offset = ((uintptr_t)ptr) & ((XHCI_PAGE_SIZE - 1) & ~(31U)); ptr = (volatile uint32_t *)(((volatile uint8_t *)ptr) + offset); } *ptr = htole32(val); } static uint32_t xhci_ctx_get_le32(struct xhci_softc *sc, volatile uint32_t *ptr) { if (sc->sc_ctx_is_64_byte) { uint32_t offset; /* exploit the fact that our structures are XHCI_PAGE_SIZE aligned */ /* all contexts are initially 32-bytes */ offset = ((uintptr_t)ptr) & ((XHCI_PAGE_SIZE - 1) & ~(31U)); ptr = (volatile uint32_t *)(((volatile uint8_t *)ptr) + offset); } return (le32toh(*ptr)); } static void xhci_ctx_set_le64(struct xhci_softc *sc, volatile uint64_t *ptr, uint64_t val) { if (sc->sc_ctx_is_64_byte) { uint32_t offset; /* exploit the fact that our structures are XHCI_PAGE_SIZE aligned */ /* all contexts are initially 32-bytes */ offset = ((uintptr_t)ptr) & ((XHCI_PAGE_SIZE - 1) & ~(31U)); ptr = (volatile uint64_t *)(((volatile uint8_t *)ptr) + offset); } *ptr = htole64(val); } #ifdef USB_DEBUG static uint64_t xhci_ctx_get_le64(struct xhci_softc *sc, volatile uint64_t *ptr) { if (sc->sc_ctx_is_64_byte) { uint32_t offset; /* exploit the fact that our structures are XHCI_PAGE_SIZE aligned */ /* all contexts are initially 32-bytes */ offset = ((uintptr_t)ptr) & ((XHCI_PAGE_SIZE - 1) & ~(31U)); ptr = (volatile uint64_t *)(((volatile uint8_t *)ptr) + offset); } return (le64toh(*ptr)); } #endif static int xhci_reset_command_queue_locked(struct xhci_softc *sc) { struct usb_page_search buf_res; struct xhci_hw_root *phwr; uint64_t addr; uint32_t temp; DPRINTF("\n"); temp = XREAD4(sc, oper, XHCI_CRCR_LO); if (temp & XHCI_CRCR_LO_CRR) { DPRINTF("Command ring running\n"); temp &= ~(XHCI_CRCR_LO_CS | XHCI_CRCR_LO_CA); /* * Try to abort the last command as per section * 4.6.1.2 "Aborting a Command" of the XHCI * specification: */ /* stop and cancel */ XWRITE4(sc, oper, XHCI_CRCR_LO, temp | XHCI_CRCR_LO_CS); XWRITE4(sc, oper, XHCI_CRCR_HI, 0); XWRITE4(sc, oper, XHCI_CRCR_LO, temp | XHCI_CRCR_LO_CA); XWRITE4(sc, oper, XHCI_CRCR_HI, 0); /* wait 250ms */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 4); /* check if command ring is still running */ temp = XREAD4(sc, oper, XHCI_CRCR_LO); if (temp & XHCI_CRCR_LO_CRR) { DPRINTF("Comand ring still running\n"); return (USB_ERR_IOERROR); } } /* reset command ring */ sc->sc_command_ccs = 1; sc->sc_command_idx = 0; usbd_get_page(&sc->sc_hw.root_pc, 0, &buf_res); /* set up command ring control base address */ addr = buf_res.physaddr; phwr = buf_res.buffer; addr += (uintptr_t)&((struct xhci_hw_root *)0)->hwr_commands[0]; DPRINTF("CRCR=0x%016llx\n", (unsigned long long)addr); memset(phwr->hwr_commands, 0, sizeof(phwr->hwr_commands)); phwr->hwr_commands[XHCI_MAX_COMMANDS - 1].qwTrb0 = htole64(addr); usb_pc_cpu_flush(&sc->sc_hw.root_pc); XWRITE4(sc, oper, XHCI_CRCR_LO, ((uint32_t)addr) | XHCI_CRCR_LO_RCS); XWRITE4(sc, oper, XHCI_CRCR_HI, (uint32_t)(addr >> 32)); return (0); } 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; usb_error_t err; uint64_t addr; uint32_t temp; uint16_t i; DPRINTF("\n"); sc->sc_event_ccs = 1; sc->sc_event_idx = 0; sc->sc_command_ccs = 1; sc->sc_command_idx = 0; err = xhci_reset_controller(sc); if (err) return (err); /* set up 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); temp = XREAD4(sc, oper, XHCI_USBSTS); /* clear interrupts */ XWRITE4(sc, oper, XHCI_USBSTS, temp); /* disable all device notifications */ XWRITE4(sc, oper, XHCI_DNCTRL, 0); /* set up 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)); /* set up event table size */ DPRINTF("ERSTSZ=0x%08x -> 0x%08x\n", XREAD4(sc, runt, XHCI_ERSTSZ(0)), sc->sc_erst_max); XWRITE4(sc, runt, XHCI_ERSTSZ(0), XHCI_ERSTS_SET(sc->sc_erst_max)); /* set up interrupt rate */ XWRITE4(sc, runt, XHCI_IMOD(0), sc->sc_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 = 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)); /* set up interrupter registers */ temp = XREAD4(sc, runt, XHCI_IMAN(0)); temp |= XHCI_IMAN_INTR_ENA; XWRITE4(sc, runt, XHCI_IMAN(0), temp); /* set up 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 / 100); 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); if (sc->sc_port_route != NULL) { /* Route all ports to the XHCI by default */ sc->sc_port_route(sc->sc_bus.parent, ~xhciroute, xhciroute); } 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 / 100); 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_reset_controller(struct xhci_softc *sc) { uint32_t temp = 0; uint16_t i; DPRINTF("\n"); /* Reset controller */ XWRITE4(sc, oper, XHCI_USBCMD, XHCI_CMD_HCRST); for (i = 0; i != 100; i++) { usb_pause_mtx(NULL, hz / 100); temp = (XREAD4(sc, oper, XHCI_USBCMD) & XHCI_CMD_HCRST) | (XREAD4(sc, oper, XHCI_USBSTS) & XHCI_STS_CNR); if (!temp) break; } if (temp) { device_printf(sc->sc_bus.parent, "Controller " "reset timeout.\n"); return (USB_ERR_IOERROR); } return (0); } usb_error_t xhci_init(struct xhci_softc *sc, device_t self, uint8_t dma32) { uint32_t temp; DPRINTF("\n"); /* initialize 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; /* set up devices array */ sc->sc_bus.devices = sc->sc_devices; sc->sc_bus.devices_max = XHCI_MAX_DEVICES; /* set default cycle state in case of early interrupts */ sc->sc_event_ccs = 1; sc->sc_command_ccs = 1; /* set up bus space offsets */ 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); DPRINTF("xHCI version = 0x%04x\n", XREAD2(sc, capa, XHCI_HCIVERSION)); if (!(XREAD4(sc, oper, XHCI_PAGESIZE) & XHCI_PAGESIZE_4K)) { device_printf(sc->sc_bus.parent, "Controller does " "not support 4K page size.\n"); return (ENXIO); } temp = XREAD4(sc, capa, XHCI_HCSPARAMS0); DPRINTF("HCS0 = 0x%08x\n", temp); /* set up context size */ if (XHCI_HCS0_CSZ(temp)) { sc->sc_ctx_is_64_byte = 1; } else { sc->sc_ctx_is_64_byte = 0; } /* get DMA bits */ sc->sc_bus.dma_bits = (XHCI_HCS0_AC64(temp) && xhcidma32 == 0 && dma32 == 0) ? 64 : 32; device_printf(self, "%d bytes context size, %d-bit DMA\n", sc->sc_ctx_is_64_byte ? 64 : 32, (int)sc->sc_bus.dma_bits); /* enable 64Kbyte control endpoint quirk */ sc->sc_bus.control_ep_quirk = (xhcictlquirk ? 1 : 0); temp = XREAD4(sc, capa, XHCI_HCSPARAMS1); /* get number of device slots */ sc->sc_noport = XHCI_HCS1_N_PORTS(temp); if (sc->sc_noport == 0) { device_printf(sc->sc_bus.parent, "Invalid number " "of ports: %u\n", sc->sc_noport); return (ENXIO); } sc->sc_noport = sc->sc_noport; sc->sc_noslot = XHCI_HCS1_DEVSLOT_MAX(temp); DPRINTF("Max slots: %u\n", sc->sc_noslot); if (sc->sc_noslot > XHCI_MAX_DEVICES) sc->sc_noslot = XHCI_MAX_DEVICES; temp = XREAD4(sc, capa, XHCI_HCSPARAMS2); DPRINTF("HCS2=0x%08x\n", temp); /* get number of scratchpads */ 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 (ENOMEM); } DPRINTF("Max scratch: %u\n", sc->sc_noscratch); /* get event table size */ sc->sc_erst_max = 1U << XHCI_HCS2_ERST_MAX(temp); if (sc->sc_erst_max > XHCI_MAX_RSEG) sc->sc_erst_max = XHCI_MAX_RSEG; temp = XREAD4(sc, capa, XHCI_HCSPARAMS3); /* get maximum exit latency */ sc->sc_exit_lat_max = XHCI_HCS3_U1_DEL(temp) + XHCI_HCS3_U2_DEL(temp) + 250 /* us */; /* Check if we should use the default IMOD value. */ if (sc->sc_imod_default == 0) sc->sc_imod_default = XHCI_IMOD_DEFAULT; /* get all DMA memory */ if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(self), &xhci_iterate_hw_softc)) { return (ENOMEM); } /* set up command queue mutex and condition varible */ cv_init(&sc->sc_cmd_cv, "CMDQ"); sx_init(&sc->sc_cmd_sx, "CMDQ lock"); 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; return (0); } void xhci_uninit(struct xhci_softc *sc) { /* * NOTE: At this point the control transfer process is gone * and "xhci_configure_msg" is no longer called. Consequently * waiting for the configuration messages to complete is not * needed. */ usb_bus_mem_free_all(&sc->sc_bus, &xhci_iterate_hw_softc); cv_destroy(&sc->sc_cmd_cv); sx_destroy(&sc->sc_cmd_sx); } static void xhci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state) { struct xhci_softc *sc = XHCI_BUS2SC(bus); switch (state) { case USB_HW_POWER_SUSPEND: DPRINTF("Stopping the XHCI\n"); xhci_halt_controller(sc); xhci_reset_controller(sc); break; case USB_HW_POWER_SHUTDOWN: DPRINTF("Stopping the XHCI\n"); xhci_halt_controller(sc); xhci_reset_controller(sc); break; case USB_HW_POWER_RESUME: DPRINTF("Starting the XHCI\n"); xhci_start_controller(sc); break; default: break; } } 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) { struct xhci_endpoint_ext *pepext; int64_t offset; uint64_t td_event; uint32_t temp; uint32_t remainder; uint16_t stream_id = 0; uint16_t i; uint8_t status; uint8_t halted; uint8_t epno; uint8_t index; /* 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; } pepext = &sc->sc_hw.devs[index].endp[epno]; /* try to find the USB transfer that generated the event */ for (i = 0;; i++) { struct usb_xfer *xfer; struct xhci_td *td; if (i == (XHCI_MAX_TRANSFERS - 1)) { if (pepext->trb_ep_mode != USB_EP_MODE_STREAMS || stream_id == (XHCI_MAX_STREAMS - 1)) break; stream_id++; i = 0; DPRINTFN(5, "stream_id=%u\n", stream_id); } xfer = pepext->xfer[i + (XHCI_MAX_TRANSFERS * stream_id)]; 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 < (int64_t)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) { if (td->alt_next == NULL) { DPRINTF( "short TD has no alternate next\n"); xhci_generic_done(xfer); break; } 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 int 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); return (1); /* command match */ } return (0); } static int xhci_interrupt_poll(struct xhci_softc *sc) { struct usb_page_search buf_res; struct xhci_hw_root *phwr; uint64_t addr; uint32_t temp; int retval = 0; 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: retval |= 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 = 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)); return (retval); } 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; uint8_t timeout = 0; 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); retry: 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)); /* * In some error cases event interrupts are not generated. * Poll one time to see if the command has completed. */ if (err != 0 && xhci_interrupt_poll(sc) != 0) { DPRINTF("Command was completed when polling\n"); err = 0; } if (err != 0) { DPRINTF("Command timeout!\n"); /* * After some weeks of continuous operation, it has * been observed that the ASMedia Technology, ASM1042 * SuperSpeed USB Host Controller can suddenly stop * accepting commands via the command queue. Try to * first reset the command queue. If that fails do a * host controller reset. */ if (timeout == 0 && xhci_reset_command_queue_locked(sc) == 0) { temp = le32toh(trb->dwTrb3); /* * Avoid infinite XHCI reset loops if the set * address command fails to respond due to a * non-enumerating device: */ if (XHCI_TRB_3_TYPE_GET(temp) == XHCI_TRB_TYPE_ADDRESS_DEVICE && (temp & XHCI_TRB_3_BSR_BIT) == 0) { DPRINTF("Set address timeout\n"); } else { timeout = 1; goto retry; } } else { DPRINTF("Controller reset!\n"); usb_bus_reset_async_locked(&sc->sc_bus); } 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, 100 /* 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, 100 /* 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, 100 /* 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; uint32_t temp; 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); /* ensure the control endpoint is setup again */ USB_BUS_LOCK(udev->bus); pepext->trb_halted = 1; pepext->trb_running = 0; USB_BUS_UNLOCK(udev->bus); err = xhci_configure_endpoint(udev, &udev->ctrl_ep_desc, pepext, 0, 1, 1, 0, mps, mps, USB_EP_MODE_DEFAULT); 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) { temp = le32toh(sc->sc_cmd_result[0]); if (address == 0 && sc->sc_port_route != NULL && XHCI_TRB_2_ERROR_GET(temp) == XHCI_TRB_ERROR_PARAMETER) { /* LynxPoint XHCI - ports are not switchable */ /* Un-route all ports from the XHCI */ sc->sc_port_route(sc->sc_bus.parent, 0, ~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); temp = xhci_ctx_get_le32(sc, &pdev->ctx_slot.dwSctx3); udev->address = XHCI_SCTX_3_DEV_ADDR_GET(temp); /* 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, 100 /* 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, 100 /* 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, 100 /* 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, 100 /* 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, 100 /* 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, 100 /* 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, if any */ if (status != 0) { XWRITE4(sc, oper, XHCI_USBSTS, status); DPRINTFN(16, "real interrupt (status=0x%08x)\n", status); } temp = XREAD4(sc, runt, XHCI_IMAN(0)); /* force clearing of pending interrupts */ if (temp & XHCI_IMAN_INTR_PEND) XWRITE4(sc, runt, XHCI_IMAN(0), temp); /* check for event(s) */ xhci_interrupt_poll(sc); if (status & (XHCI_STS_PCD | XHCI_STS_HCH | XHCI_STS_HSE | XHCI_STS_HCE)) { 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__); } } 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; struct xhci_td *td_first; uint32_t buf_offset; uint32_t average; uint32_t len_old; uint32_t npkt_off; 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; npkt_off = 0; precompute = 1; restart: td = temp->td; td_next = td_first = 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(XHCI_TRB_0_DIR_IN_MASK)) 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) { 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; npkt_off += buf_res.length; } /* set up npkt */ npkt = howmany(len_old - npkt_off, temp->max_packet_size); if (npkt == 0) npkt = 1; else 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); switch (temp->trb_type) { case XHCI_TRB_TYPE_ISOCH: dword = XHCI_TRB_3_CHAIN_BIT | XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_TBC_SET(temp->tbc) | XHCI_TRB_3_TLBPC_SET(temp->tlbpc); if (td != td_first) { dword |= XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_NORMAL); } else if (temp->do_isoc_sync != 0) { temp->do_isoc_sync = 0; /* wait until "isoc_frame" */ dword |= XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_ISOCH) | XHCI_TRB_3_FRID_SET(temp->isoc_frame / 8); } else { /* start data transfer at next interval */ dword |= XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_ISOCH) | XHCI_TRB_3_ISO_SIA_BIT; } if (temp->direction == UE_DIR_IN) dword |= XHCI_TRB_3_ISP_BIT; break; case XHCI_TRB_TYPE_DATA_STAGE: dword = XHCI_TRB_3_CHAIN_BIT | XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_DATA_STAGE); if (temp->direction == UE_DIR_IN) dword |= XHCI_TRB_3_DIR_IN | XHCI_TRB_3_ISP_BIT; /* * Section 3.2.9 in the XHCI * specification about control * transfers says that we should use a * normal-TRB if there are more TRBs * extending the data-stage * TRB. Update the "trb_type". */ temp->trb_type = XHCI_TRB_TYPE_NORMAL; break; case XHCI_TRB_TYPE_STATUS_STAGE: dword = XHCI_TRB_3_CHAIN_BIT | XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_STATUS_STAGE); if (temp->direction == UE_DIR_IN) dword |= XHCI_TRB_3_DIR_IN; break; default: /* XHCI_TRB_TYPE_NORMAL */ dword = XHCI_TRB_3_CHAIN_BIT | XHCI_TRB_3_CYCLE_BIT | XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_NORMAL); if (temp->direction == UE_DIR_IN) dword |= XHCI_TRB_3_ISP_BIT; break; } 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 | /* * CHAIN-BIT: Ensure that a multi-TRB IN-endpoint * frame only receives a single short packet event * by setting the CHAIN bit in the LINK field. In * addition some XHCI controllers have problems * sending a ZLP unless the CHAIN-BIT is set in * the LINK TRB. */ XHCI_TRB_3_CHAIN_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; /* set up 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 the first TRB if we are * stepping them: */ if (temp->step_td != 0) { td_first->td_trb[0].dwTrb3 &= ~htole32(XHCI_TRB_3_CYCLE_BIT); usb_pc_cpu_flush(td_first->page_cache); } /* clear TD SIZE to zero, hence this is the last TRB */ /* remove chain bit because this is the last data TRB in the chain */ td->td_trb[td->ntrb - 1].dwTrb2 &= ~htole32(XHCI_TRB_2_TDSZ_SET(31)); td->td_trb[td->ntrb - 1].dwTrb3 &= ~htole32(XHCI_TRB_3_CHAIN_BIT); /* remove CHAIN-BIT from last LINK TRB */ td->td_trb[td->ntrb].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.do_isoc_sync = 0; 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 ? UE_GET_SS_ISO_MULT(xfer->endpoint->ecomp->bmAttributes) : 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; temp.do_isoc_sync = 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 = xfer->flags_int.control_did_data ? XHCI_TRB_TYPE_NORMAL : 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) { /* set up 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 = howmany(temp.len, xfer->max_packet_size); temp.tbc = howmany(tdpc, 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. */ if (xhcictlstep || temp.sc->sc_ctlstep) { /* * Some XHCI controllers will not delay the * status stage until the next SOF. Force this * behaviour to avoid failed control * transfers. */ temp.step_td = (xfer->nframes != 0); } else { temp.step_td = 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; uint32_t temp; uint8_t index; uint8_t x; 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; xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, mask); xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, 0); } else { /* * Some hardware requires that we drop the endpoint * context before adding it again: */ xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, mask & XHCI_INCTX_NON_CTRL_MASK); /* Add new endpoint context */ xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, mask); /* find most significant set bit */ for (x = 31; x != 1; x--) { if (mask & (1 << x)) break; } /* adjust */ x--; /* figure out the maximum number of contexts */ if (x > sc->sc_hw.devs[index].context_num) sc->sc_hw.devs[index].context_num = x; else x = sc->sc_hw.devs[index].context_num; /* update number of contexts */ temp = xhci_ctx_get_le32(sc, &pinp->ctx_slot.dwSctx0); temp &= ~XHCI_SCTX_0_CTX_NUM_SET(31); temp |= XHCI_SCTX_0_CTX_NUM_SET(x + 1); xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx0, temp); } usb_pc_cpu_flush(&sc->sc_hw.devs[index].input_pc); return (0); } static usb_error_t xhci_configure_endpoint(struct usb_device *udev, struct usb_endpoint_descriptor *edesc, struct xhci_endpoint_ext *pepext, 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, uint8_t ep_mode) { struct usb_page_search buf_inp; struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); struct xhci_input_dev_ctx *pinp; uint64_t ring_addr = pepext->physaddr; 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); /* store endpoint mode */ pepext->trb_ep_mode = ep_mode; /* store bMaxPacketSize for control endpoints */ pepext->trb_ep_maxp = edesc->wMaxPacketSize[0]; usb_pc_cpu_flush(pepext->page_cache); if (ep_mode == USB_EP_MODE_STREAMS) { temp = XHCI_EPCTX_0_EPSTATE_SET(0) | XHCI_EPCTX_0_MAXP_STREAMS_SET(XHCI_MAX_STREAMS_LOG - 1) | XHCI_EPCTX_0_LSA_SET(1); ring_addr += sizeof(struct xhci_trb) * XHCI_MAX_TRANSFERS * XHCI_MAX_STREAMS; } else { temp = XHCI_EPCTX_0_EPSTATE_SET(0) | XHCI_EPCTX_0_MAXP_STREAMS_SET(0) | XHCI_EPCTX_0_LSA_SET(0); ring_addr |= XHCI_EPCTX_2_DCS_SET(1); } 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; } xhci_ctx_set_le32(sc, &pinp->ctx_ep[epno - 1].dwEpCtx0, 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); /* * Always enable the "three strikes and you are gone" feature * except for ISOCHRONOUS endpoints. This is suggested by * section 4.3.3 in the XHCI specification about device slot * initialisation. */ 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); xhci_ctx_set_le32(sc, &pinp->ctx_ep[epno - 1].dwEpCtx1, temp); xhci_ctx_set_le64(sc, &pinp->ctx_ep[epno - 1].qwEpCtx2, 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; } xhci_ctx_set_le32(sc, &pinp->ctx_ep[epno - 1].dwEpCtx4, temp); #ifdef USB_DEBUG xhci_dump_endpoint(sc, &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; usb_stream_t x; pepext = xhci_get_endpoint_ext(xfer->xroot->udev, xfer->endpoint->edesc); ecomp = xfer->endpoint->ecomp; for (x = 0; x != XHCI_MAX_STREAMS; x++) { uint64_t temp; /* halt any transfers */ pepext->trb[x * XHCI_MAX_TRANSFERS].dwTrb3 = 0; /* compute start of TRB ring for stream "x" */ temp = pepext->physaddr + (x * XHCI_MAX_TRANSFERS * sizeof(struct xhci_trb)) + XHCI_SCTX_0_SCT_SEC_TR_RING; /* make tree structure */ pepext->trb[(XHCI_MAX_TRANSFERS * XHCI_MAX_STREAMS) + x].qwTrb0 = htole64(temp); /* reserved fields */ pepext->trb[(XHCI_MAX_TRANSFERS * XHCI_MAX_STREAMS) + x].dwTrb2 = 0; pepext->trb[(XHCI_MAX_TRANSFERS * XHCI_MAX_STREAMS) + x].dwTrb3 = 0; } usb_pc_cpu_flush(pepext->page_cache); return (xhci_configure_endpoint(xfer->xroot->udev, xfer->endpoint->edesc, pepext, xfer->interval, xfer->max_packet_count, (ecomp != NULL) ? UE_GET_SS_ISO_MULT(ecomp->bmAttributes) + 1 : 1, usbd_xfer_get_fps_shift(xfer), xfer->max_packet_size, xfer->max_frame_size, xfer->endpoint->ep_mode)); } static usb_error_t xhci_configure_device(struct usb_device *udev) { struct xhci_softc *sc = XHCI_BUS2SC(udev->bus); struct usb_page_search buf_inp; struct usb_page_cache *pcinp; struct xhci_input_dev_ctx *pinp; struct usb_device *hubdev; uint32_t temp; uint32_t route; uint32_t rh_port; uint8_t is_hub; uint8_t index; uint8_t depth; index = udev->controller_slot_id; DPRINTF("index=%u\n", index); pcinp = &sc->sc_hw.devs[index].input_pc; usbd_get_page(pcinp, 0, &buf_inp); 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; depth = hubdev->parent_hub->depth; /* * NOTE: HS/FS/LS devices and the SS root HUB can have * more than 15 ports */ rh_port = hubdev->port_no; if (depth == 0) break; if (rh_port > 15) rh_port = 15; if (depth < 6) route |= rh_port << (4 * (depth - 1)); } DPRINTF("Route=0x%08x\n", route); temp = XHCI_SCTX_0_ROUTE_SET(route) | XHCI_SCTX_0_CTX_NUM_SET( sc->sc_hw.devs[index].context_num + 1); switch (udev->speed) { case USB_SPEED_LOW: temp |= XHCI_SCTX_0_SPEED_SET(2); if (udev->parent_hs_hub != NULL && udev->parent_hs_hub->ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) { DPRINTF("Device inherits MTT\n"); temp |= XHCI_SCTX_0_MTT_SET(1); } break; case USB_SPEED_HIGH: temp |= XHCI_SCTX_0_SPEED_SET(3); if (sc->sc_hw.devs[index].nports != 0 && udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) { DPRINTF("HUB supports MTT\n"); temp |= XHCI_SCTX_0_MTT_SET(1); } break; case USB_SPEED_FULL: temp |= XHCI_SCTX_0_SPEED_SET(1); if (udev->parent_hs_hub != NULL && udev->parent_hs_hub->ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) { DPRINTF("Device inherits MTT\n"); temp |= XHCI_SCTX_0_MTT_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); xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx0, 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; } xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx1, 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; } xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx2, temp); /* * These fields should be initialized to zero, according to * XHCI section 6.2.2 - slot context: */ temp = XHCI_SCTX_3_DEV_ADDR_SET(0) | XHCI_SCTX_3_SLOT_STATE_SET(0); xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx3, temp); #ifdef USB_DEBUG xhci_dump_device(sc, &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, sc->sc_ctx_is_64_byte ? (2 * sizeof(struct xhci_dev_ctx)) : 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, sc->sc_ctx_is_64_byte ? (2 * sizeof(struct xhci_input_dev_ctx)) : sizeof(struct xhci_input_dev_ctx), XHCI_PAGE_SIZE)) { goto error; } /* initialize all endpoint LINK TRBs */ for (i = 0; i != XHCI_MAX_ENDPOINTS; i++) { pc = &sc->sc_hw.devs[index].endpoint_pc[i]; pg = &sc->sc_hw.devs[index].endpoint_pg[i]; /* 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_TRB_ALIGN)) { goto error; } /* lookup endpoint TRB ring */ usbd_get_page(pc, 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; uint8_t i; 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); for (i = 0; i != XHCI_MAX_ENDPOINTS; i++) usb_pc_free_mem(&sc->sc_hw.devs[index].endpoint_pc[i]); } 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[epno]; usbd_get_page(pc, 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(xfer->stream_id)); } } 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[xfer->stream_id]--; 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_trb *trb_link; struct xhci_endpoint_ext *pepext; uint64_t addr; usb_stream_t id; uint8_t i; uint8_t inext; uint8_t trb_limit; DPRINTFN(8, "\n"); id = xfer->stream_id; /* 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[id] >= trb_limit) { DPRINTFN(8, "Too many TDs queued.\n"); return (USB_ERR_NOMEM); } /* check if bMaxPacketSize changed */ if (xfer->flags_int.control_xfr != 0 && pepext->trb_ep_maxp != xfer->endpoint->edesc->wMaxPacketSize[0]) { DPRINTFN(8, "Reconfigure control endpoint\n"); /* force driver to reconfigure endpoint */ pepext->trb_halted = 1; pepext->trb_running = 0; } /* 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(USB_BUS_CONTROL_XFER_PROC(&sc->sc_bus), &sc->sc_config_msg[0], &sc->sc_config_msg[1]); return (0); } pepext->trb_used[id]++; /* get current TRB index */ i = pepext->trb_index[id]; /* 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; /* store next TRB index, before stream ID offset is added */ pepext->trb_index[id] = inext; /* offset for stream */ i += id * XHCI_MAX_TRANSFERS; inext += id * XHCI_MAX_TRANSFERS; /* compute terminating return address */ addr += (inext * sizeof(struct xhci_trb)); /* compute link TRB pointer */ trb_link = td_last->td_trb + td_last->ntrb; /* update next pointer of last link TRB */ trb_link->qwTrb0 = htole64(addr); trb_link->dwTrb2 = htole32(XHCI_TRB_2_IRQ_SET(0)); trb_link->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; 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, usb_stream_t stream_id, struct usb_xfer *enter_xfer) { struct usb_xfer *xfer; /* check if there is a current transfer */ xfer = ep->endpoint_q[stream_id].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[stream_id].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"); /* set up TD's and QH */ xhci_setup_generic_chain(xfer); xhci_device_generic_multi_enter(xfer->endpoint, xfer->stream_id, 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, xfer->stream_id, 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); } static const 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 = { (uint8_t)(val), (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[0] = 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 */ .wU2DevExitLat = { 0x00, 0x08 }, }, .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); i = XHCI_PS_PLS_GET(v); v &= ~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_SUSPEND: 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: /* U3 -> U15 */ if (i == 3) { XWRITE4(sc, oper, port, v | XHCI_PS_PLS_SET(0xF) | XHCI_PS_LWS); } /* wait 20ms for resume sequence to complete */ usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 50); /* U0 */ 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) { - /* - * The USB 3.0 RH is using the - * USB 2.0's power bit - */ - i |= UPS_PORT_POWER; - } +#if 0 + if (v & XHCI_PS_PP) + /* XXX undefined */ +#endif 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 usb_xfer *xfer; void *last_obj; uint32_t ntd; uint32_t n; 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_inp; struct usb_device *udev; struct xhci_endpoint_ext *pepext; struct usb_endpoint_descriptor *edesc; struct usb_page_cache *pcinp; usb_error_t err; usb_stream_t stream_id; uint32_t mask; 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; pcinp = &sc->sc_hw.devs[index].input_pc; usbd_get_page(pcinp, 0, &buf_inp); edesc = xfer->endpoint->edesc; epno = edesc->bEndpointAddress; stream_id = xfer->stream_id; 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 + (stream_id * sizeof(struct xhci_trb) * XHCI_MAX_TRANSFERS)) | XHCI_EPCTX_2_DCS_SET(1), stream_id, 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: */ mask = (1U << epno); xhci_configure_mask(udev, mask | 1U, 0); if (!(sc->sc_hw.devs[index].ep_configured & mask)) { sc->sc_hw.devs[index].ep_configured |= mask; err = xhci_cmd_configure_ep(sc, buf_inp.physaddr, 0, index); } else { err = xhci_cmd_evaluate_ctx(sc, buf_inp.physaddr, index); } if (err != 0) { DPRINTF("Could not configure " "endpoint %u at slot %u.\n", epno, index); } 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(USB_BUS_CONTROL_XFER_PROC(&sc->sc_bus), &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)) { uint16_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 * XHCI_MAX_STREAMS); 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; memset(pepext->trb_index, 0, sizeof(pepext->trb_index)); } 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, xfer->stream_id, 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->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; uint8_t p; 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++) { for (p = 0; p != XHCI_MAX_STREAMS; p++) { XWRITE4(sc, door, XHCI_DOORBELL(index), n | XHCI_DB_SID_SET(p)); } } 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; /* set default state */ sc->sc_hw.devs[index].state = XHCI_ST_DEFAULT; sc->sc_hw.devs[index].ep_configured = 3U; /* reset number of contexts */ sc->sc_hw.devs[index].context_num = 0; 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; sc->sc_hw.devs[index].ep_configured = 3U; /* set configure mask to slot only */ xhci_configure_mask(udev, 1, 0); /* deconfigure all endpoints, except EP0 */ 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) { /* deconfigure all endpoints, except EP0 */ err = xhci_cmd_configure_ep(sc, 0, 1, index); if (err) { DPRINTF("Failed to deconfigure " "slot %u.\n", index); } } /* set configured state */ sc->sc_hw.devs[index].state = XHCI_ST_CONFIGURED; sc->sc_hw.devs[index].ep_configured = 3U; /* reset number of contexts */ sc->sc_hw.devs[index].context_num = 0; usbd_get_page(&sc->sc_hw.devs[index].input_pc, 0, &buf_inp); xhci_configure_mask(udev, 3, 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); } static usb_error_t xhci_set_endpoint_mode(struct usb_device *udev, struct usb_endpoint *ep, uint8_t ep_mode) { switch (ep_mode) { case USB_EP_MODE_DEFAULT: return (0); case USB_EP_MODE_STREAMS: if (xhcistreams == 0 || (ep->edesc->bmAttributes & UE_XFERTYPE) != UE_BULK || udev->speed != USB_SPEED_SUPER) return (USB_ERR_INVAL); return (0); default: return (USB_ERR_INVAL); } } static const 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, .set_hw_power_sleep = xhci_set_hw_power_sleep, .set_endpoint_mode = xhci_set_endpoint_mode, }; Index: head/sys/dev/usb/usb_hub.c =================================================================== --- head/sys/dev/usb/usb_hub.c (revision 358737) +++ head/sys/dev/usb/usb_hub.c (revision 358738) @@ -1,2930 +1,2930 @@ /* $FreeBSD$ */ /*- * SPDX-License-Identifier: BSD-2-Clause-NetBSD * * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved. * Copyright (c) 1998 Lennart Augustsson. All rights reserved. * Copyright (c) 2008-2010 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 spec: http://www.usb.org/developers/docs/usbspec.zip */ #ifdef USB_GLOBAL_INCLUDE_FILE #include USB_GLOBAL_INCLUDE_FILE #else #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR uhub_debug #include #include #include #include #include #include #include #include #include #include #include #include #endif /* USB_GLOBAL_INCLUDE_FILE */ #include #ifdef USB_DEBUG static int uhub_debug = 0; static SYSCTL_NODE(_hw_usb, OID_AUTO, uhub, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "USB HUB"); SYSCTL_INT(_hw_usb_uhub, OID_AUTO, debug, CTLFLAG_RWTUN, &uhub_debug, 0, "Debug level"); #endif #if USB_HAVE_POWERD static int usb_power_timeout = 30; /* seconds */ SYSCTL_INT(_hw_usb, OID_AUTO, power_timeout, CTLFLAG_RWTUN, &usb_power_timeout, 0, "USB power timeout"); #endif #if USB_HAVE_DISABLE_ENUM static int usb_disable_enumeration = 0; SYSCTL_INT(_hw_usb, OID_AUTO, disable_enumeration, CTLFLAG_RWTUN, &usb_disable_enumeration, 0, "Set to disable all USB device enumeration. " "This can secure against USB devices turning evil, " "for example a USB memory stick becoming a USB keyboard."); static int usb_disable_port_power = 0; SYSCTL_INT(_hw_usb, OID_AUTO, disable_port_power, CTLFLAG_RWTUN, &usb_disable_port_power, 0, "Set to disable all USB port power."); #endif #define UHUB_PROTO(sc) ((sc)->sc_udev->ddesc.bDeviceProtocol) #define UHUB_IS_HIGH_SPEED(sc) (UHUB_PROTO(sc) != UDPROTO_FSHUB) #define UHUB_IS_SINGLE_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBSTT) #define UHUB_IS_MULTI_TT(sc) (UHUB_PROTO(sc) == UDPROTO_HSHUBMTT) #define UHUB_IS_SUPER_SPEED(sc) (UHUB_PROTO(sc) == UDPROTO_SSHUB) /* prototypes for type checking: */ static device_suspend_t uhub_suspend; static device_resume_t uhub_resume; static bus_driver_added_t uhub_driver_added; static bus_child_pnpinfo_str_t uhub_child_pnpinfo_string; static usb_callback_t uhub_intr_callback; #if USB_HAVE_TT_SUPPORT static usb_callback_t uhub_reset_tt_callback; #endif static void usb_dev_resume_peer(struct usb_device *udev); static void usb_dev_suspend_peer(struct usb_device *udev); static uint8_t usb_peer_should_wakeup(struct usb_device *udev); static const struct usb_config uhub_config[UHUB_N_TRANSFER] = { [UHUB_INTR_TRANSFER] = { .type = UE_INTERRUPT, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_ANY, .timeout = 0, .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .bufsize = 0, /* use wMaxPacketSize */ .callback = &uhub_intr_callback, .interval = UHUB_INTR_INTERVAL, }, #if USB_HAVE_TT_SUPPORT [UHUB_RESET_TT_TRANSFER] = { .type = UE_CONTROL, .endpoint = 0x00, /* Control pipe */ .direction = UE_DIR_ANY, .bufsize = sizeof(struct usb_device_request), .callback = &uhub_reset_tt_callback, .timeout = 1000, /* 1 second */ .usb_mode = USB_MODE_HOST, }, #endif }; /* * driver instance for "hub" connected to "usb" * and "hub" connected to "hub" */ static devclass_t uhub_devclass; static device_method_t uhub_methods[] = { DEVMETHOD(device_probe, uhub_probe), DEVMETHOD(device_attach, uhub_attach), DEVMETHOD(device_detach, uhub_detach), DEVMETHOD(device_suspend, uhub_suspend), DEVMETHOD(device_resume, uhub_resume), DEVMETHOD(bus_child_location_str, uhub_child_location_string), DEVMETHOD(bus_child_pnpinfo_str, uhub_child_pnpinfo_string), DEVMETHOD(bus_driver_added, uhub_driver_added), DEVMETHOD_END }; driver_t uhub_driver = { .name = "uhub", .methods = uhub_methods, .size = sizeof(struct uhub_softc) }; DRIVER_MODULE(uhub, usbus, uhub_driver, uhub_devclass, 0, 0); DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, NULL, 0); MODULE_VERSION(uhub, 1); static void uhub_intr_callback(struct usb_xfer *xfer, usb_error_t error) { struct uhub_softc *sc = usbd_xfer_softc(xfer); switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: DPRINTFN(2, "\n"); /* * This is an indication that some port * has changed status. Notify the bus * event handler thread that we need * to be explored again: */ usb_needs_explore(sc->sc_udev->bus, 0); case USB_ST_SETUP: usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); break; default: /* Error */ if (xfer->error != USB_ERR_CANCELLED) { /* * Do a clear-stall. The "stall_pipe" flag * will get cleared before next callback by * the USB stack. */ usbd_xfer_set_stall(xfer); usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); } break; } } /*------------------------------------------------------------------------* * uhub_reset_tt_proc * * This function starts the TT reset USB request *------------------------------------------------------------------------*/ #if USB_HAVE_TT_SUPPORT static void uhub_reset_tt_proc(struct usb_proc_msg *_pm) { struct usb_udev_msg *pm = (void *)_pm; struct usb_device *udev = pm->udev; struct usb_hub *hub; struct uhub_softc *sc; hub = udev->hub; if (hub == NULL) return; sc = hub->hubsoftc; if (sc == NULL) return; /* Change lock */ USB_BUS_UNLOCK(udev->bus); USB_MTX_LOCK(&sc->sc_mtx); /* Start transfer */ usbd_transfer_start(sc->sc_xfer[UHUB_RESET_TT_TRANSFER]); /* Change lock */ USB_MTX_UNLOCK(&sc->sc_mtx); USB_BUS_LOCK(udev->bus); } #endif /*------------------------------------------------------------------------* * uhub_tt_buffer_reset_async_locked * * This function queues a TT reset for the given USB device and endpoint. *------------------------------------------------------------------------*/ #if USB_HAVE_TT_SUPPORT void uhub_tt_buffer_reset_async_locked(struct usb_device *child, struct usb_endpoint *ep) { struct usb_device_request req; struct usb_device *udev; struct usb_hub *hub; struct usb_port *up; uint16_t wValue; uint8_t port; if (child == NULL || ep == NULL) return; udev = child->parent_hs_hub; port = child->hs_port_no; if (udev == NULL) return; hub = udev->hub; if ((hub == NULL) || (udev->speed != USB_SPEED_HIGH) || (child->speed != USB_SPEED_LOW && child->speed != USB_SPEED_FULL) || (child->flags.usb_mode != USB_MODE_HOST) || (port == 0) || (ep->edesc == NULL)) { /* not applicable */ return; } USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED); up = hub->ports + port - 1; if (udev->ddesc.bDeviceClass == UDCLASS_HUB && udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT) port = 1; /* if we already received a clear buffer request, reset the whole TT */ if (up->req_reset_tt.bRequest != 0) { req.bmRequestType = UT_WRITE_CLASS_OTHER; req.bRequest = UR_RESET_TT; USETW(req.wValue, 0); req.wIndex[0] = port; req.wIndex[1] = 0; USETW(req.wLength, 0); } else { wValue = (ep->edesc->bEndpointAddress & 0xF) | ((child->address & 0x7F) << 4) | ((ep->edesc->bEndpointAddress & 0x80) << 8) | ((ep->edesc->bmAttributes & 3) << 12); req.bmRequestType = UT_WRITE_CLASS_OTHER; req.bRequest = UR_CLEAR_TT_BUFFER; USETW(req.wValue, wValue); req.wIndex[0] = port; req.wIndex[1] = 0; USETW(req.wLength, 0); } up->req_reset_tt = req; /* get reset transfer started */ usb_proc_msignal(USB_BUS_TT_PROC(udev->bus), &hub->tt_msg[0], &hub->tt_msg[1]); } #endif #if USB_HAVE_TT_SUPPORT static void uhub_reset_tt_callback(struct usb_xfer *xfer, usb_error_t error) { struct uhub_softc *sc; struct usb_device *udev; struct usb_port *up; uint8_t x; DPRINTF("TT buffer reset\n"); sc = usbd_xfer_softc(xfer); udev = sc->sc_udev; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: case USB_ST_SETUP: tr_setup: USB_BUS_LOCK(udev->bus); /* find first port which needs a TT reset */ for (x = 0; x != udev->hub->nports; x++) { up = udev->hub->ports + x; if (up->req_reset_tt.bRequest == 0) continue; /* copy in the transfer */ usbd_copy_in(xfer->frbuffers, 0, &up->req_reset_tt, sizeof(up->req_reset_tt)); /* reset buffer */ memset(&up->req_reset_tt, 0, sizeof(up->req_reset_tt)); /* set length */ usbd_xfer_set_frame_len(xfer, 0, sizeof(up->req_reset_tt)); xfer->nframes = 1; USB_BUS_UNLOCK(udev->bus); usbd_transfer_submit(xfer); return; } USB_BUS_UNLOCK(udev->bus); break; default: if (error == USB_ERR_CANCELLED) break; DPRINTF("TT buffer reset failed (%s)\n", usbd_errstr(error)); goto tr_setup; } } #endif /*------------------------------------------------------------------------* * uhub_count_active_host_ports * * This function counts the number of active ports at the given speed. *------------------------------------------------------------------------*/ uint8_t uhub_count_active_host_ports(struct usb_device *udev, enum usb_dev_speed speed) { struct uhub_softc *sc; struct usb_device *child; struct usb_hub *hub; struct usb_port *up; uint8_t retval = 0; uint8_t x; if (udev == NULL) goto done; hub = udev->hub; if (hub == NULL) goto done; sc = hub->hubsoftc; if (sc == NULL) goto done; for (x = 0; x != hub->nports; x++) { up = hub->ports + x; child = usb_bus_port_get_device(udev->bus, up); if (child != NULL && child->flags.usb_mode == USB_MODE_HOST && child->speed == speed) retval++; } done: return (retval); } void uhub_explore_handle_re_enumerate(struct usb_device *child) { uint8_t do_unlock; usb_error_t err; /* check if device should be re-enumerated */ if (child->flags.usb_mode != USB_MODE_HOST) return; do_unlock = usbd_enum_lock(child); switch (child->re_enumerate_wait) { case USB_RE_ENUM_START: err = usbd_set_config_index(child, USB_UNCONFIG_INDEX); if (err != 0) { DPRINTF("Unconfigure failed: %s: Ignored.\n", usbd_errstr(err)); } if (child->parent_hub == NULL) { /* the root HUB cannot be re-enumerated */ DPRINTFN(6, "cannot reset root HUB\n"); err = 0; } else { err = usbd_req_re_enumerate(child, NULL); } if (err == 0) err = usbd_set_config_index(child, 0); if (err == 0) { err = usb_probe_and_attach(child, USB_IFACE_INDEX_ANY); } child->re_enumerate_wait = USB_RE_ENUM_DONE; break; case USB_RE_ENUM_PWR_OFF: /* get the device unconfigured */ err = usbd_set_config_index(child, USB_UNCONFIG_INDEX); if (err) { DPRINTFN(0, "Could not unconfigure " "device (ignored)\n"); } if (child->parent_hub == NULL) { /* the root HUB cannot be re-enumerated */ DPRINTFN(6, "cannot set port feature\n"); err = 0; } else { /* clear port enable */ err = usbd_req_clear_port_feature(child->parent_hub, NULL, child->port_no, UHF_PORT_ENABLE); if (err) { DPRINTFN(0, "Could not disable port " "(ignored)\n"); } } child->re_enumerate_wait = USB_RE_ENUM_DONE; break; case USB_RE_ENUM_SET_CONFIG: err = usbd_set_config_index(child, child->next_config_index); if (err != 0) { DPRINTF("Configure failed: %s: Ignored.\n", usbd_errstr(err)); } else { err = usb_probe_and_attach(child, USB_IFACE_INDEX_ANY); } child->re_enumerate_wait = USB_RE_ENUM_DONE; break; default: child->re_enumerate_wait = USB_RE_ENUM_DONE; break; } if (do_unlock) usbd_enum_unlock(child); } /*------------------------------------------------------------------------* * uhub_explore_sub - subroutine * * Return values: * 0: Success * Else: A control transaction failed *------------------------------------------------------------------------*/ static usb_error_t uhub_explore_sub(struct uhub_softc *sc, struct usb_port *up) { struct usb_bus *bus; struct usb_device *child; uint8_t refcount; usb_error_t err; bus = sc->sc_udev->bus; err = 0; /* get driver added refcount from USB bus */ refcount = bus->driver_added_refcount; /* get device assosiated with the given port */ child = usb_bus_port_get_device(bus, up); if (child == NULL) { /* nothing to do */ goto done; } uhub_explore_handle_re_enumerate(child); /* check if probe and attach should be done */ if (child->driver_added_refcount != refcount) { child->driver_added_refcount = refcount; err = usb_probe_and_attach(child, USB_IFACE_INDEX_ANY); if (err) { goto done; } } /* start control transfer, if device mode */ if (child->flags.usb_mode == USB_MODE_DEVICE) usbd_ctrl_transfer_setup(child); /* if a HUB becomes present, do a recursive HUB explore */ if (child->hub) err = (child->hub->explore) (child); done: return (err); } /*------------------------------------------------------------------------* * uhub_read_port_status - factored out code *------------------------------------------------------------------------*/ static usb_error_t uhub_read_port_status(struct uhub_softc *sc, uint8_t portno) { struct usb_port_status ps; usb_error_t err; if (sc->sc_usb_port_errors >= UHUB_USB_PORT_ERRORS_MAX) { DPRINTFN(4, "port %d, HUB looks dead, too many errors\n", portno); sc->sc_st.port_status = 0; sc->sc_st.port_change = 0; return (USB_ERR_TIMEOUT); } err = usbd_req_get_port_status( sc->sc_udev, NULL, &ps, portno); if (err == 0) { sc->sc_st.port_status = UGETW(ps.wPortStatus); sc->sc_st.port_change = UGETW(ps.wPortChange); sc->sc_usb_port_errors = 0; } else { sc->sc_st.port_status = 0; sc->sc_st.port_change = 0; sc->sc_usb_port_errors++; } /* debugging print */ DPRINTFN(4, "port %d, wPortStatus=0x%04x, " "wPortChange=0x%04x, err=%s\n", portno, sc->sc_st.port_status, sc->sc_st.port_change, usbd_errstr(err)); return (err); } /*------------------------------------------------------------------------* * uhub_reattach_port * * Returns: * 0: Success * Else: A control transaction failed *------------------------------------------------------------------------*/ static usb_error_t uhub_reattach_port(struct uhub_softc *sc, uint8_t portno) { struct usb_device *child; struct usb_device *udev; enum usb_dev_speed speed; enum usb_hc_mode mode; usb_error_t err; uint16_t power_mask; uint8_t timeout; DPRINTF("reattaching port %d\n", portno); timeout = 0; udev = sc->sc_udev; child = usb_bus_port_get_device(udev->bus, udev->hub->ports + portno - 1); repeat: /* first clear the port connection change bit */ err = usbd_req_clear_port_feature(udev, NULL, portno, UHF_C_PORT_CONNECTION); if (err) goto error; /* check if there is a child */ if (child != NULL) { /* * Free USB device and all subdevices, if any. */ usb_free_device(child, 0); child = NULL; } /* get fresh status */ err = uhub_read_port_status(sc, portno); if (err) goto error; #if USB_HAVE_DISABLE_ENUM /* check if we should skip enumeration from this USB HUB */ if (usb_disable_enumeration != 0 || sc->sc_disable_enumeration != 0) { DPRINTF("Enumeration is disabled!\n"); goto error; } #endif /* check if nothing is connected to the port */ if (!(sc->sc_st.port_status & UPS_CURRENT_CONNECT_STATUS)) goto error; /* check if there is no power on the port and print a warning */ switch (udev->speed) { case USB_SPEED_HIGH: case USB_SPEED_FULL: case USB_SPEED_LOW: power_mask = UPS_PORT_POWER; break; case USB_SPEED_SUPER: if (udev->parent_hub == NULL) - power_mask = UPS_PORT_POWER; + power_mask = 0; /* XXX undefined */ else power_mask = UPS_PORT_POWER_SS; break; default: power_mask = 0; break; } - if (!(sc->sc_st.port_status & power_mask)) { + if ((sc->sc_st.port_status & power_mask) != power_mask) { DPRINTF("WARNING: strange, connected port %d " "has no power\n", portno); } /* check if the device is in Host Mode */ if (!(sc->sc_st.port_status & UPS_PORT_MODE_DEVICE)) { DPRINTF("Port %d is in Host Mode\n", portno); if (sc->sc_st.port_status & UPS_SUSPEND) { /* * NOTE: Should not get here in SuperSpeed * mode, because the HUB should report this * bit as zero. */ DPRINTF("Port %d was still " "suspended, clearing.\n", portno); err = usbd_req_clear_port_feature(udev, NULL, portno, UHF_PORT_SUSPEND); } /* USB Host Mode */ /* wait for maximum device power up time */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(usb_port_powerup_delay)); /* reset port, which implies enabling it */ err = usbd_req_reset_port(udev, NULL, portno); if (err) { DPRINTFN(0, "port %d reset " "failed, error=%s\n", portno, usbd_errstr(err)); goto error; } /* get port status again, it might have changed during reset */ err = uhub_read_port_status(sc, portno); if (err) { goto error; } /* check if something changed during port reset */ if ((sc->sc_st.port_change & UPS_C_CONNECT_STATUS) || (!(sc->sc_st.port_status & UPS_CURRENT_CONNECT_STATUS))) { if (timeout) { DPRINTFN(0, "giving up port reset " "- device vanished\n"); goto error; } timeout = 1; goto repeat; } } else { DPRINTF("Port %d is in Device Mode\n", portno); } /* * Figure out the device speed */ switch (udev->speed) { case USB_SPEED_HIGH: if (sc->sc_st.port_status & UPS_HIGH_SPEED) speed = USB_SPEED_HIGH; else if (sc->sc_st.port_status & UPS_LOW_SPEED) speed = USB_SPEED_LOW; else speed = USB_SPEED_FULL; break; case USB_SPEED_FULL: if (sc->sc_st.port_status & UPS_LOW_SPEED) speed = USB_SPEED_LOW; else speed = USB_SPEED_FULL; break; case USB_SPEED_LOW: speed = USB_SPEED_LOW; break; case USB_SPEED_SUPER: if (udev->parent_hub == NULL) { /* Root HUB - special case */ switch (sc->sc_st.port_status & UPS_OTHER_SPEED) { case 0: speed = USB_SPEED_FULL; break; case UPS_LOW_SPEED: speed = USB_SPEED_LOW; break; case UPS_HIGH_SPEED: speed = USB_SPEED_HIGH; break; default: speed = USB_SPEED_SUPER; break; } } else { speed = USB_SPEED_SUPER; } break; default: /* same speed like parent */ speed = udev->speed; break; } if (speed == USB_SPEED_SUPER) { err = usbd_req_set_hub_u1_timeout(udev, NULL, portno, 128 - (2 * udev->depth)); if (err) { DPRINTFN(0, "port %d U1 timeout " "failed, error=%s\n", portno, usbd_errstr(err)); } err = usbd_req_set_hub_u2_timeout(udev, NULL, portno, 128 - (2 * udev->depth)); if (err) { DPRINTFN(0, "port %d U2 timeout " "failed, error=%s\n", portno, usbd_errstr(err)); } } /* * Figure out the device mode * * NOTE: This part is currently FreeBSD specific. */ if (udev->parent_hub != NULL) { /* inherit mode from the parent HUB */ mode = udev->parent_hub->flags.usb_mode; } else if (sc->sc_st.port_status & UPS_PORT_MODE_DEVICE) mode = USB_MODE_DEVICE; else mode = USB_MODE_HOST; /* need to create a new child */ child = usb_alloc_device(sc->sc_dev, udev->bus, udev, udev->depth + 1, portno - 1, portno, speed, mode); if (child == NULL) { DPRINTFN(0, "could not allocate new device\n"); goto error; } return (0); /* success */ error: if (child != NULL) { /* * Free USB device and all subdevices, if any. */ usb_free_device(child, 0); child = NULL; } if (err == 0) { if (sc->sc_st.port_status & UPS_PORT_ENABLED) { err = usbd_req_clear_port_feature( sc->sc_udev, NULL, portno, UHF_PORT_ENABLE); } } if (err) { DPRINTFN(0, "device problem (%s), " "disabling port %d\n", usbd_errstr(err), portno); } return (err); } /*------------------------------------------------------------------------* * usb_device_20_compatible * * Returns: * 0: HUB does not support suspend and resume * Else: HUB supports suspend and resume *------------------------------------------------------------------------*/ static uint8_t usb_device_20_compatible(struct usb_device *udev) { if (udev == NULL) return (0); switch (udev->speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: return (1); default: return (0); } } /*------------------------------------------------------------------------* * uhub_suspend_resume_port * * Returns: * 0: Success * Else: A control transaction failed *------------------------------------------------------------------------*/ static usb_error_t uhub_suspend_resume_port(struct uhub_softc *sc, uint8_t portno) { struct usb_device *child; struct usb_device *udev; uint8_t is_suspend; usb_error_t err; DPRINTF("port %d\n", portno); udev = sc->sc_udev; child = usb_bus_port_get_device(udev->bus, udev->hub->ports + portno - 1); /* first clear the port suspend change bit */ if (usb_device_20_compatible(udev)) { err = usbd_req_clear_port_feature(udev, NULL, portno, UHF_C_PORT_SUSPEND); } else { err = usbd_req_clear_port_feature(udev, NULL, portno, UHF_C_PORT_LINK_STATE); } if (err) { DPRINTF("clearing suspend failed.\n"); goto done; } /* get fresh status */ err = uhub_read_port_status(sc, portno); if (err) { DPRINTF("reading port status failed.\n"); goto done; } /* convert current state */ if (usb_device_20_compatible(udev)) { if (sc->sc_st.port_status & UPS_SUSPEND) { is_suspend = 1; } else { is_suspend = 0; } } else { switch (UPS_PORT_LINK_STATE_GET(sc->sc_st.port_status)) { case UPS_PORT_LS_U3: is_suspend = 1; break; case UPS_PORT_LS_SS_INA: usbd_req_warm_reset_port(udev, NULL, portno); is_suspend = 0; break; default: is_suspend = 0; break; } } DPRINTF("suspended=%u\n", is_suspend); /* do the suspend or resume */ if (child) { /* * This code handle two cases: 1) Host Mode - we can only * receive resume here 2) Device Mode - we can receive * suspend and resume here */ if (is_suspend == 0) usb_dev_resume_peer(child); else if (child->flags.usb_mode == USB_MODE_DEVICE) usb_dev_suspend_peer(child); } done: return (err); } /*------------------------------------------------------------------------* * uhub_root_interrupt * * This function is called when a Root HUB interrupt has * happened. "ptr" and "len" makes up the Root HUB interrupt * packet. This function is called having the "bus_mtx" locked. *------------------------------------------------------------------------*/ void uhub_root_intr(struct usb_bus *bus, const uint8_t *ptr, uint8_t len) { USB_BUS_LOCK_ASSERT(bus, MA_OWNED); usb_needs_explore(bus, 0); } static uint8_t uhub_is_too_deep(struct usb_device *udev) { switch (udev->speed) { case USB_SPEED_FULL: case USB_SPEED_LOW: case USB_SPEED_HIGH: if (udev->depth > USB_HUB_MAX_DEPTH) return (1); break; case USB_SPEED_SUPER: if (udev->depth > USB_SS_HUB_DEPTH_MAX) return (1); break; default: break; } return (0); } /*------------------------------------------------------------------------* * uhub_explore * * Returns: * 0: Success * Else: Failure *------------------------------------------------------------------------*/ static usb_error_t uhub_explore(struct usb_device *udev) { struct usb_hub *hub; struct uhub_softc *sc; struct usb_port *up; usb_error_t err; uint8_t portno; uint8_t x; uint8_t do_unlock; hub = udev->hub; sc = hub->hubsoftc; DPRINTFN(11, "udev=%p addr=%d\n", udev, udev->address); /* ignore devices that are too deep */ if (uhub_is_too_deep(udev)) return (USB_ERR_TOO_DEEP); /* check if device is suspended */ if (udev->flags.self_suspended) { /* need to wait until the child signals resume */ DPRINTF("Device is suspended!\n"); return (0); } /* * Make sure we don't race against user-space applications * like LibUSB: */ do_unlock = usbd_enum_lock(udev); for (x = 0; x != hub->nports; x++) { up = hub->ports + x; portno = x + 1; err = uhub_read_port_status(sc, portno); if (err) { /* most likely the HUB is gone */ break; } if (sc->sc_st.port_change & UPS_C_OVERCURRENT_INDICATOR) { DPRINTF("Overcurrent on port %u.\n", portno); err = usbd_req_clear_port_feature( udev, NULL, portno, UHF_C_PORT_OVER_CURRENT); if (err) { /* most likely the HUB is gone */ break; } } if (!(sc->sc_flags & UHUB_FLAG_DID_EXPLORE)) { /* * Fake a connect status change so that the * status gets checked initially! */ sc->sc_st.port_change |= UPS_C_CONNECT_STATUS; } if (sc->sc_st.port_change & UPS_C_PORT_ENABLED) { err = usbd_req_clear_port_feature( udev, NULL, portno, UHF_C_PORT_ENABLE); if (err) { /* most likely the HUB is gone */ break; } if (sc->sc_st.port_change & UPS_C_CONNECT_STATUS) { /* * Ignore the port error if the device * has vanished ! */ } else if (sc->sc_st.port_status & UPS_PORT_ENABLED) { DPRINTFN(0, "illegal enable change, " "port %d\n", portno); } else { if (up->restartcnt == USB_RESTART_MAX) { /* XXX could try another speed ? */ DPRINTFN(0, "port error, giving up " "port %d\n", portno); } else { sc->sc_st.port_change |= UPS_C_CONNECT_STATUS; up->restartcnt++; } } } if (sc->sc_st.port_change & UPS_C_CONNECT_STATUS) { err = uhub_reattach_port(sc, portno); if (err) { /* most likely the HUB is gone */ break; } } if (sc->sc_st.port_change & (UPS_C_SUSPEND | UPS_C_PORT_LINK_STATE)) { err = uhub_suspend_resume_port(sc, portno); if (err) { /* most likely the HUB is gone */ break; } } err = uhub_explore_sub(sc, up); if (err) { /* no device(s) present */ continue; } /* explore succeeded - reset restart counter */ up->restartcnt = 0; } if (do_unlock) usbd_enum_unlock(udev); /* initial status checked */ sc->sc_flags |= UHUB_FLAG_DID_EXPLORE; /* return success */ return (USB_ERR_NORMAL_COMPLETION); } int uhub_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); if (uaa->usb_mode != USB_MODE_HOST) return (ENXIO); /* * The subclass for USB HUBs is currently ignored because it * is 0 for some and 1 for others. */ if (uaa->info.bConfigIndex == 0 && uaa->info.bDeviceClass == UDCLASS_HUB) return (BUS_PROBE_DEFAULT); return (ENXIO); } /* NOTE: The information returned by this function can be wrong. */ usb_error_t uhub_query_info(struct usb_device *udev, uint8_t *pnports, uint8_t *ptt) { struct usb_hub_descriptor hubdesc20; struct usb_hub_ss_descriptor hubdesc30; usb_error_t err; uint8_t nports; uint8_t tt; if (udev->ddesc.bDeviceClass != UDCLASS_HUB) return (USB_ERR_INVAL); nports = 0; tt = 0; switch (udev->speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: /* assuming that there is one port */ err = usbd_req_get_hub_descriptor(udev, NULL, &hubdesc20, 1); if (err) { DPRINTFN(0, "getting USB 2.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); break; } nports = hubdesc20.bNbrPorts; if (nports > 127) nports = 127; if (udev->speed == USB_SPEED_HIGH) tt = (UGETW(hubdesc20.wHubCharacteristics) >> 5) & 3; break; case USB_SPEED_SUPER: err = usbd_req_get_ss_hub_descriptor(udev, NULL, &hubdesc30, 1); if (err) { DPRINTFN(0, "Getting USB 3.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); break; } nports = hubdesc30.bNbrPorts; if (nports > 16) nports = 16; break; default: err = USB_ERR_INVAL; break; } if (pnports != NULL) *pnports = nports; if (ptt != NULL) *ptt = tt; return (err); } int uhub_attach(device_t dev) { struct uhub_softc *sc = device_get_softc(dev); struct usb_attach_arg *uaa = device_get_ivars(dev); struct usb_device *udev = uaa->device; struct usb_device *parent_hub = udev->parent_hub; struct usb_hub *hub; struct usb_hub_descriptor hubdesc20; struct usb_hub_ss_descriptor hubdesc30; #if USB_HAVE_DISABLE_ENUM struct sysctl_ctx_list *sysctl_ctx; struct sysctl_oid *sysctl_tree; #endif uint16_t pwrdly; uint16_t nports; uint8_t x; uint8_t portno; uint8_t removable; uint8_t iface_index; usb_error_t err; sc->sc_udev = udev; sc->sc_dev = dev; mtx_init(&sc->sc_mtx, "USB HUB mutex", NULL, MTX_DEF); device_set_usb_desc(dev); DPRINTFN(2, "depth=%d selfpowered=%d, parent=%p, " "parent->selfpowered=%d\n", udev->depth, udev->flags.self_powered, parent_hub, parent_hub ? parent_hub->flags.self_powered : 0); if (uhub_is_too_deep(udev)) { DPRINTFN(0, "HUB at depth %d, " "exceeds maximum. HUB ignored\n", (int)udev->depth); goto error; } if (!udev->flags.self_powered && parent_hub && !parent_hub->flags.self_powered) { DPRINTFN(0, "Bus powered HUB connected to " "bus powered HUB. HUB ignored\n"); goto error; } if (UHUB_IS_MULTI_TT(sc)) { err = usbd_set_alt_interface_index(udev, 0, 1); if (err) { device_printf(dev, "MTT could not be enabled\n"); goto error; } device_printf(dev, "MTT enabled\n"); } /* get HUB descriptor */ DPRINTFN(2, "Getting HUB descriptor\n"); switch (udev->speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: /* assuming that there is one port */ err = usbd_req_get_hub_descriptor(udev, NULL, &hubdesc20, 1); if (err) { DPRINTFN(0, "getting USB 2.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); goto error; } /* get number of ports */ nports = hubdesc20.bNbrPorts; /* get power delay */ pwrdly = ((hubdesc20.bPwrOn2PwrGood * UHD_PWRON_FACTOR) + usb_extra_power_up_time); /* get complete HUB descriptor */ if (nports >= 8) { /* check number of ports */ if (nports > 127) { DPRINTFN(0, "Invalid number of USB 2.0 ports," "error=%s\n", usbd_errstr(err)); goto error; } /* get complete HUB descriptor */ err = usbd_req_get_hub_descriptor(udev, NULL, &hubdesc20, nports); if (err) { DPRINTFN(0, "Getting USB 2.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); goto error; } if (hubdesc20.bNbrPorts != nports) { DPRINTFN(0, "Number of ports changed\n"); goto error; } } break; case USB_SPEED_SUPER: if (udev->parent_hub != NULL) { err = usbd_req_set_hub_depth(udev, NULL, udev->depth - 1); if (err) { DPRINTFN(0, "Setting USB 3.0 HUB depth failed," "error=%s\n", usbd_errstr(err)); goto error; } } err = usbd_req_get_ss_hub_descriptor(udev, NULL, &hubdesc30, 1); if (err) { DPRINTFN(0, "Getting USB 3.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); goto error; } /* get number of ports */ nports = hubdesc30.bNbrPorts; /* get power delay */ pwrdly = ((hubdesc30.bPwrOn2PwrGood * UHD_PWRON_FACTOR) + usb_extra_power_up_time); /* get complete HUB descriptor */ if (nports >= 8) { /* check number of ports */ if (nports > ((udev->parent_hub != NULL) ? 15 : 127)) { DPRINTFN(0, "Invalid number of USB 3.0 ports," "error=%s\n", usbd_errstr(err)); goto error; } /* get complete HUB descriptor */ err = usbd_req_get_ss_hub_descriptor(udev, NULL, &hubdesc30, nports); if (err) { DPRINTFN(0, "Getting USB 2.0 HUB descriptor failed," "error=%s\n", usbd_errstr(err)); goto error; } if (hubdesc30.bNbrPorts != nports) { DPRINTFN(0, "Number of ports changed\n"); goto error; } } break; default: DPRINTF("Assuming HUB has only one port\n"); /* default number of ports */ nports = 1; /* default power delay */ pwrdly = ((10 * UHD_PWRON_FACTOR) + usb_extra_power_up_time); break; } if (nports == 0) { DPRINTFN(0, "portless HUB\n"); goto error; } if (nports > USB_MAX_PORTS) { DPRINTF("Port limit exceeded\n"); goto error; } #if (USB_HAVE_FIXED_PORT == 0) hub = malloc(sizeof(hub[0]) + (sizeof(hub->ports[0]) * nports), M_USBDEV, M_WAITOK | M_ZERO); if (hub == NULL) goto error; #else hub = &sc->sc_hub; #endif udev->hub = hub; /* initialize HUB structure */ hub->hubsoftc = sc; hub->explore = &uhub_explore; hub->nports = nports; hub->hubudev = udev; #if USB_HAVE_TT_SUPPORT hub->tt_msg[0].hdr.pm_callback = &uhub_reset_tt_proc; hub->tt_msg[0].udev = udev; hub->tt_msg[1].hdr.pm_callback = &uhub_reset_tt_proc; hub->tt_msg[1].udev = udev; #endif /* if self powered hub, give ports maximum current */ if (udev->flags.self_powered) { hub->portpower = USB_MAX_POWER; } else { hub->portpower = USB_MIN_POWER; } /* set up interrupt pipe */ iface_index = 0; if (udev->parent_hub == NULL) { /* root HUB is special */ err = 0; } else { /* normal HUB */ err = usbd_transfer_setup(udev, &iface_index, sc->sc_xfer, uhub_config, UHUB_N_TRANSFER, sc, &sc->sc_mtx); } if (err) { DPRINTFN(0, "cannot setup interrupt transfer, " "errstr=%s\n", usbd_errstr(err)); goto error; } /* wait with power off for a while */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(USB_POWER_DOWN_TIME)); #if USB_HAVE_DISABLE_ENUM /* Add device sysctls */ sysctl_ctx = device_get_sysctl_ctx(dev); sysctl_tree = device_get_sysctl_tree(dev); if (sysctl_ctx != NULL && sysctl_tree != NULL) { (void) SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "disable_enumeration", CTLFLAG_RWTUN, &sc->sc_disable_enumeration, 0, "Set to disable enumeration on this USB HUB."); (void) SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "disable_port_power", CTLFLAG_RWTUN, &sc->sc_disable_port_power, 0, "Set to disable USB port power on this USB HUB."); } #endif /* * To have the best chance of success we do things in the exact same * order as Windoze98. This should not be necessary, but some * devices do not follow the USB specs to the letter. * * These are the events on the bus when a hub is attached: * Get device and config descriptors (see attach code) * Get hub descriptor (see above) * For all ports * turn on power * wait for power to become stable * (all below happens in explore code) * For all ports * clear C_PORT_CONNECTION * For all ports * get port status * if device connected * wait 100 ms * turn on reset * wait * clear C_PORT_RESET * get port status * proceed with device attachment */ /* XXX should check for none, individual, or ganged power? */ removable = 0; for (x = 0; x != nports; x++) { /* set up data structures */ struct usb_port *up = hub->ports + x; up->device_index = 0; up->restartcnt = 0; portno = x + 1; /* check if port is removable */ switch (udev->speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: if (!UHD_NOT_REMOV(&hubdesc20, portno)) removable++; break; case USB_SPEED_SUPER: if (!UHD_NOT_REMOV(&hubdesc30, portno)) removable++; break; default: DPRINTF("Assuming removable port\n"); removable++; break; } if (err == 0) { #if USB_HAVE_DISABLE_ENUM /* check if we should disable USB port power or not */ if (usb_disable_port_power != 0 || sc->sc_disable_port_power != 0) { /* turn the power off */ DPRINTFN(2, "Turning port %d power off\n", portno); err = usbd_req_clear_port_feature(udev, NULL, portno, UHF_PORT_POWER); } else { #endif /* turn the power on */ DPRINTFN(2, "Turning port %d power on\n", portno); err = usbd_req_set_port_feature(udev, NULL, portno, UHF_PORT_POWER); #if USB_HAVE_DISABLE_ENUM } #endif } if (err != 0) { DPRINTFN(0, "port %d power on or off failed, %s\n", portno, usbd_errstr(err)); } DPRINTF("turn on port %d power\n", portno); /* wait for stable power */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(pwrdly)); } device_printf(dev, "%d port%s with %d " "removable, %s powered\n", nports, (nports != 1) ? "s" : "", removable, udev->flags.self_powered ? "self" : "bus"); /* Start the interrupt endpoint, if any */ USB_MTX_LOCK(&sc->sc_mtx); usbd_transfer_start(sc->sc_xfer[UHUB_INTR_TRANSFER]); USB_MTX_UNLOCK(&sc->sc_mtx); /* Enable automatic power save on all USB HUBs */ usbd_set_power_mode(udev, USB_POWER_MODE_SAVE); return (0); error: usbd_transfer_unsetup(sc->sc_xfer, UHUB_N_TRANSFER); #if (USB_HAVE_FIXED_PORT == 0) free(udev->hub, M_USBDEV); #endif udev->hub = NULL; mtx_destroy(&sc->sc_mtx); return (ENXIO); } /* * Called from process context when the hub is gone. * Detach all devices on active ports. */ int uhub_detach(device_t dev) { struct uhub_softc *sc = device_get_softc(dev); struct usb_hub *hub = sc->sc_udev->hub; struct usb_bus *bus = sc->sc_udev->bus; struct usb_device *child; uint8_t x; if (hub == NULL) /* must be partially working */ return (0); /* Make sure interrupt transfer is gone. */ usbd_transfer_unsetup(sc->sc_xfer, UHUB_N_TRANSFER); /* Detach all ports */ for (x = 0; x != hub->nports; x++) { child = usb_bus_port_get_device(bus, hub->ports + x); if (child == NULL) { continue; } /* * Free USB device and all subdevices, if any. */ usb_free_device(child, 0); } #if USB_HAVE_TT_SUPPORT /* Make sure our TT messages are not queued anywhere */ USB_BUS_LOCK(bus); usb_proc_mwait(USB_BUS_TT_PROC(bus), &hub->tt_msg[0], &hub->tt_msg[1]); USB_BUS_UNLOCK(bus); #endif #if (USB_HAVE_FIXED_PORT == 0) free(hub, M_USBDEV); #endif sc->sc_udev->hub = NULL; mtx_destroy(&sc->sc_mtx); return (0); } static int uhub_suspend(device_t dev) { DPRINTF("\n"); /* Sub-devices are not suspended here! */ return (0); } static int uhub_resume(device_t dev) { DPRINTF("\n"); /* Sub-devices are not resumed here! */ return (0); } static void uhub_driver_added(device_t dev, driver_t *driver) { usb_needs_explore_all(); } void uhub_find_iface_index(struct usb_hub *hub, device_t child, struct hub_result *res) { struct usb_interface *iface; struct usb_device *udev; uint8_t nports; uint8_t x; uint8_t i; nports = hub->nports; for (x = 0; x != nports; x++) { udev = usb_bus_port_get_device(hub->hubudev->bus, hub->ports + x); if (!udev) { continue; } for (i = 0; i != USB_IFACE_MAX; i++) { iface = usbd_get_iface(udev, i); if (iface && (iface->subdev == child)) { res->iface_index = i; res->udev = udev; res->portno = x + 1; return; } } } res->iface_index = 0; res->udev = NULL; res->portno = 0; } int uhub_child_location_string(device_t parent, device_t child, char *buf, size_t buflen) { struct uhub_softc *sc; struct usb_hub *hub; struct hub_result res; if (!device_is_attached(parent)) { if (buflen) buf[0] = 0; return (0); } sc = device_get_softc(parent); hub = sc->sc_udev->hub; mtx_lock(&Giant); uhub_find_iface_index(hub, child, &res); if (!res.udev) { DPRINTF("device not on hub\n"); if (buflen) { buf[0] = '\0'; } goto done; } snprintf(buf, buflen, "bus=%u hubaddr=%u port=%u devaddr=%u" " interface=%u" #if USB_HAVE_UGEN " ugen=%s" #endif , device_get_unit(res.udev->bus->bdev) , (res.udev->parent_hub != NULL) ? res.udev->parent_hub->device_index : 0 , res.portno, res.udev->device_index, res.iface_index #if USB_HAVE_UGEN , res.udev->ugen_name #endif ); done: mtx_unlock(&Giant); return (0); } static int uhub_child_pnpinfo_string(device_t parent, device_t child, char *buf, size_t buflen) { struct uhub_softc *sc; struct usb_hub *hub; struct usb_interface *iface; struct hub_result res; if (!device_is_attached(parent)) { if (buflen) buf[0] = 0; return (0); } sc = device_get_softc(parent); hub = sc->sc_udev->hub; mtx_lock(&Giant); uhub_find_iface_index(hub, child, &res); if (!res.udev) { DPRINTF("device not on hub\n"); if (buflen) { buf[0] = '\0'; } goto done; } iface = usbd_get_iface(res.udev, res.iface_index); if (iface && iface->idesc) { snprintf(buf, buflen, "vendor=0x%04x product=0x%04x " "devclass=0x%02x devsubclass=0x%02x " "devproto=0x%02x " "sernum=\"%s\" " "release=0x%04x " "mode=%s " "intclass=0x%02x intsubclass=0x%02x " "intprotocol=0x%02x" "%s%s", UGETW(res.udev->ddesc.idVendor), UGETW(res.udev->ddesc.idProduct), res.udev->ddesc.bDeviceClass, res.udev->ddesc.bDeviceSubClass, res.udev->ddesc.bDeviceProtocol, usb_get_serial(res.udev), UGETW(res.udev->ddesc.bcdDevice), (res.udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", iface->idesc->bInterfaceClass, iface->idesc->bInterfaceSubClass, iface->idesc->bInterfaceProtocol, iface->pnpinfo ? " " : "", iface->pnpinfo ? iface->pnpinfo : ""); } else { if (buflen) { buf[0] = '\0'; } goto done; } done: mtx_unlock(&Giant); return (0); } /* * The USB Transaction Translator: * =============================== * * When doing LOW- and FULL-speed USB transfers across a HIGH-speed * USB HUB, bandwidth must be allocated for ISOCHRONOUS and INTERRUPT * USB transfers. To utilize bandwidth dynamically the "scatter and * gather" principle must be applied. This means that bandwidth must * be divided into equal parts of bandwidth. With regard to USB all * data is transferred in smaller packets with length * "wMaxPacketSize". The problem however is that "wMaxPacketSize" is * not a constant! * * The bandwidth scheduler which I have implemented will simply pack * the USB transfers back to back until there is no more space in the * schedule. Out of the 8 microframes which the USB 2.0 standard * provides, only 6 are available for non-HIGH-speed devices. I have * reserved the first 4 microframes for ISOCHRONOUS transfers. The * last 2 microframes I have reserved for INTERRUPT transfers. Without * this division, it is very difficult to allocate and free bandwidth * dynamically. * * NOTE about the Transaction Translator in USB HUBs: * * USB HUBs have a very simple Transaction Translator, that will * simply pipeline all the SPLIT transactions. That means that the * transactions will be executed in the order they are queued! * */ /*------------------------------------------------------------------------* * usb_intr_find_best_slot * * Return value: * The best Transaction Translation slot for an interrupt endpoint. *------------------------------------------------------------------------*/ static uint8_t usb_intr_find_best_slot(usb_size_t *ptr, uint8_t start, uint8_t end, uint8_t mask) { usb_size_t min = (usb_size_t)-1; usb_size_t sum; uint8_t x; uint8_t y; uint8_t z; y = 0; /* find the last slot with lesser used bandwidth */ for (x = start; x < end; x++) { sum = 0; /* compute sum of bandwidth */ for (z = x; z < end; z++) { if (mask & (1U << (z - x))) sum += ptr[z]; } /* check if the current multi-slot is more optimal */ if (min >= sum) { min = sum; y = x; } /* check if the mask is about to be shifted out */ if (mask & (1U << (end - 1 - x))) break; } return (y); } /*------------------------------------------------------------------------* * usb_hs_bandwidth_adjust * * This function will update the bandwidth usage for the microframe * having index "slot" by "len" bytes. "len" can be negative. If the * "slot" argument is greater or equal to "USB_HS_MICRO_FRAMES_MAX" * the "slot" argument will be replaced by the slot having least used * bandwidth. The "mask" argument is used for multi-slot allocations. * * Returns: * The slot in which the bandwidth update was done: 0..7 *------------------------------------------------------------------------*/ static uint8_t usb_hs_bandwidth_adjust(struct usb_device *udev, int16_t len, uint8_t slot, uint8_t mask) { struct usb_bus *bus = udev->bus; struct usb_hub *hub; enum usb_dev_speed speed; uint8_t x; USB_BUS_LOCK_ASSERT(bus, MA_OWNED); speed = usbd_get_speed(udev); switch (speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: if (speed == USB_SPEED_LOW) { len *= 8; } /* * The Host Controller Driver should have * performed checks so that the lookup * below does not result in a NULL pointer * access. */ hub = udev->parent_hs_hub->hub; if (slot >= USB_HS_MICRO_FRAMES_MAX) { slot = usb_intr_find_best_slot(hub->uframe_usage, USB_FS_ISOC_UFRAME_MAX, 6, mask); } for (x = slot; x < 8; x++) { if (mask & (1U << (x - slot))) { hub->uframe_usage[x] += len; bus->uframe_usage[x] += len; } } break; default: if (slot >= USB_HS_MICRO_FRAMES_MAX) { slot = usb_intr_find_best_slot(bus->uframe_usage, 0, USB_HS_MICRO_FRAMES_MAX, mask); } for (x = slot; x < 8; x++) { if (mask & (1U << (x - slot))) { bus->uframe_usage[x] += len; } } break; } return (slot); } /*------------------------------------------------------------------------* * usb_hs_bandwidth_alloc * * This function is a wrapper function for "usb_hs_bandwidth_adjust()". *------------------------------------------------------------------------*/ void usb_hs_bandwidth_alloc(struct usb_xfer *xfer) { struct usb_device *udev; uint8_t slot; uint8_t mask; uint8_t speed; udev = xfer->xroot->udev; if (udev->flags.usb_mode != USB_MODE_HOST) return; /* not supported */ xfer->endpoint->refcount_bw++; if (xfer->endpoint->refcount_bw != 1) return; /* already allocated */ speed = usbd_get_speed(udev); switch (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE) { case UE_INTERRUPT: /* allocate a microframe slot */ mask = 0x01; slot = usb_hs_bandwidth_adjust(udev, xfer->max_frame_size, USB_HS_MICRO_FRAMES_MAX, mask); xfer->endpoint->usb_uframe = slot; xfer->endpoint->usb_smask = mask << slot; if ((speed != USB_SPEED_FULL) && (speed != USB_SPEED_LOW)) { xfer->endpoint->usb_cmask = 0x00 ; } else { xfer->endpoint->usb_cmask = (-(0x04 << slot)) & 0xFE; } break; case UE_ISOCHRONOUS: switch (usbd_xfer_get_fps_shift(xfer)) { case 0: mask = 0xFF; break; case 1: mask = 0x55; break; case 2: mask = 0x11; break; default: mask = 0x01; break; } /* allocate a microframe multi-slot */ slot = usb_hs_bandwidth_adjust(udev, xfer->max_frame_size, USB_HS_MICRO_FRAMES_MAX, mask); xfer->endpoint->usb_uframe = slot; xfer->endpoint->usb_cmask = 0; xfer->endpoint->usb_smask = mask << slot; break; default: xfer->endpoint->usb_uframe = 0; xfer->endpoint->usb_cmask = 0; xfer->endpoint->usb_smask = 0; break; } DPRINTFN(11, "slot=%d, mask=0x%02x\n", xfer->endpoint->usb_uframe, xfer->endpoint->usb_smask >> xfer->endpoint->usb_uframe); } /*------------------------------------------------------------------------* * usb_hs_bandwidth_free * * This function is a wrapper function for "usb_hs_bandwidth_adjust()". *------------------------------------------------------------------------*/ void usb_hs_bandwidth_free(struct usb_xfer *xfer) { struct usb_device *udev; uint8_t slot; uint8_t mask; udev = xfer->xroot->udev; if (udev->flags.usb_mode != USB_MODE_HOST) return; /* not supported */ xfer->endpoint->refcount_bw--; if (xfer->endpoint->refcount_bw != 0) return; /* still allocated */ switch (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE) { case UE_INTERRUPT: case UE_ISOCHRONOUS: slot = xfer->endpoint->usb_uframe; mask = xfer->endpoint->usb_smask; /* free microframe slot(s): */ usb_hs_bandwidth_adjust(udev, -xfer->max_frame_size, slot, mask >> slot); DPRINTFN(11, "slot=%d, mask=0x%02x\n", slot, mask >> slot); xfer->endpoint->usb_uframe = 0; xfer->endpoint->usb_cmask = 0; xfer->endpoint->usb_smask = 0; break; default: break; } } /*------------------------------------------------------------------------* * usb_isoc_time_expand * * This function will expand the time counter from 7-bit to 16-bit. * * Returns: * 16-bit isochronous time counter. *------------------------------------------------------------------------*/ uint16_t usb_isoc_time_expand(struct usb_bus *bus, uint16_t isoc_time_curr) { uint16_t rem; USB_BUS_LOCK_ASSERT(bus, MA_OWNED); rem = bus->isoc_time_last & (USB_ISOC_TIME_MAX - 1); isoc_time_curr &= (USB_ISOC_TIME_MAX - 1); if (isoc_time_curr < rem) { /* the time counter wrapped around */ bus->isoc_time_last += USB_ISOC_TIME_MAX; } /* update the remainder */ bus->isoc_time_last &= ~(USB_ISOC_TIME_MAX - 1); bus->isoc_time_last |= isoc_time_curr; return (bus->isoc_time_last); } /*------------------------------------------------------------------------* * usbd_fs_isoc_schedule_alloc_slot * * This function will allocate bandwidth for an isochronous FULL speed * transaction in the FULL speed schedule. * * Returns: * <8: Success * Else: Error *------------------------------------------------------------------------*/ #if USB_HAVE_TT_SUPPORT uint8_t usbd_fs_isoc_schedule_alloc_slot(struct usb_xfer *isoc_xfer, uint16_t isoc_time) { struct usb_xfer *xfer; struct usb_xfer *pipe_xfer; struct usb_bus *bus; usb_frlength_t len; usb_frlength_t data_len; uint16_t delta; uint16_t slot; uint8_t retval; data_len = 0; slot = 0; bus = isoc_xfer->xroot->bus; TAILQ_FOREACH(xfer, &bus->intr_q.head, wait_entry) { /* skip self, if any */ if (xfer == isoc_xfer) continue; /* check if this USB transfer is going through the same TT */ if (xfer->xroot->udev->parent_hs_hub != isoc_xfer->xroot->udev->parent_hs_hub) { continue; } if ((isoc_xfer->xroot->udev->parent_hs_hub-> ddesc.bDeviceProtocol == UDPROTO_HSHUBMTT) && (xfer->xroot->udev->hs_port_no != isoc_xfer->xroot->udev->hs_port_no)) { continue; } if (xfer->endpoint->methods != isoc_xfer->endpoint->methods) continue; /* check if isoc_time is part of this transfer */ delta = xfer->isoc_time_complete - isoc_time; if (delta > 0 && delta <= xfer->nframes) { delta = xfer->nframes - delta; len = xfer->frlengths[delta]; len += 8; len *= 7; len /= 6; data_len += len; } /* * Check double buffered transfers. Only stream ID * equal to zero is valid here! */ TAILQ_FOREACH(pipe_xfer, &xfer->endpoint->endpoint_q[0].head, wait_entry) { /* skip self, if any */ if (pipe_xfer == isoc_xfer) continue; /* check if isoc_time is part of this transfer */ delta = pipe_xfer->isoc_time_complete - isoc_time; if (delta > 0 && delta <= pipe_xfer->nframes) { delta = pipe_xfer->nframes - delta; len = pipe_xfer->frlengths[delta]; len += 8; len *= 7; len /= 6; data_len += len; } } } while (data_len >= USB_FS_BYTES_PER_HS_UFRAME) { data_len -= USB_FS_BYTES_PER_HS_UFRAME; slot++; } /* check for overflow */ if (slot >= USB_FS_ISOC_UFRAME_MAX) return (255); retval = slot; delta = isoc_xfer->isoc_time_complete - isoc_time; if (delta > 0 && delta <= isoc_xfer->nframes) { delta = isoc_xfer->nframes - delta; len = isoc_xfer->frlengths[delta]; len += 8; len *= 7; len /= 6; data_len += len; } while (data_len >= USB_FS_BYTES_PER_HS_UFRAME) { data_len -= USB_FS_BYTES_PER_HS_UFRAME; slot++; } /* check for overflow */ if (slot >= USB_FS_ISOC_UFRAME_MAX) return (255); return (retval); } #endif /*------------------------------------------------------------------------* * usb_bus_port_get_device * * This function is NULL safe. *------------------------------------------------------------------------*/ struct usb_device * usb_bus_port_get_device(struct usb_bus *bus, struct usb_port *up) { if ((bus == NULL) || (up == NULL)) { /* be NULL safe */ return (NULL); } if (up->device_index == 0) { /* nothing to do */ return (NULL); } return (bus->devices[up->device_index]); } /*------------------------------------------------------------------------* * usb_bus_port_set_device * * This function is NULL safe. *------------------------------------------------------------------------*/ void usb_bus_port_set_device(struct usb_bus *bus, struct usb_port *up, struct usb_device *udev, uint8_t device_index) { if (bus == NULL) { /* be NULL safe */ return; } /* * There is only one case where we don't * have an USB port, and that is the Root Hub! */ if (up) { if (udev) { up->device_index = device_index; } else { device_index = up->device_index; up->device_index = 0; } } /* * Make relationships to our new device */ if (device_index != 0) { #if USB_HAVE_UGEN mtx_lock(&usb_ref_lock); #endif bus->devices[device_index] = udev; #if USB_HAVE_UGEN mtx_unlock(&usb_ref_lock); #endif } /* * Debug print */ DPRINTFN(2, "bus %p devices[%u] = %p\n", bus, device_index, udev); } /*------------------------------------------------------------------------* * usb_needs_explore * * This functions is called when the USB event thread needs to run. *------------------------------------------------------------------------*/ void usb_needs_explore(struct usb_bus *bus, uint8_t do_probe) { uint8_t do_unlock; DPRINTF("\n"); if (cold != 0) { DPRINTF("Cold\n"); return; } if (bus == NULL) { DPRINTF("No bus pointer!\n"); return; } if ((bus->devices == NULL) || (bus->devices[USB_ROOT_HUB_ADDR] == NULL)) { DPRINTF("No root HUB\n"); return; } if (mtx_owned(&bus->bus_mtx)) { do_unlock = 0; } else { USB_BUS_LOCK(bus); do_unlock = 1; } if (do_probe) { bus->do_probe = 1; } if (usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), &bus->explore_msg[0], &bus->explore_msg[1])) { /* ignore */ } if (do_unlock) { USB_BUS_UNLOCK(bus); } } /*------------------------------------------------------------------------* * usb_needs_explore_all * * This function is called whenever a new driver is loaded and will * cause that all USB buses are re-explored. *------------------------------------------------------------------------*/ void usb_needs_explore_all(void) { struct usb_bus *bus; devclass_t dc; device_t dev; int max; DPRINTFN(3, "\n"); dc = usb_devclass_ptr; if (dc == NULL) { DPRINTFN(0, "no devclass\n"); return; } /* * Explore all USB buses in parallel. */ max = devclass_get_maxunit(dc); while (max >= 0) { dev = devclass_get_device(dc, max); if (dev) { bus = device_get_softc(dev); if (bus) { usb_needs_explore(bus, 1); } } max--; } } /*------------------------------------------------------------------------* * usb_needs_explore_init * * This function will ensure that the USB controllers are not enumerated * until the "cold" variable is cleared. *------------------------------------------------------------------------*/ static void usb_needs_explore_init(void *arg) { /* * The cold variable should be cleared prior to this function * being called: */ if (cold == 0) usb_needs_explore_all(); else DPRINTFN(-1, "Cold variable is still set!\n"); } SYSINIT(usb_needs_explore_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, usb_needs_explore_init, NULL); /*------------------------------------------------------------------------* * usb_bus_power_update * * This function will ensure that all USB devices on the given bus are * properly suspended or resumed according to the device transfer * state. *------------------------------------------------------------------------*/ #if USB_HAVE_POWERD void usb_bus_power_update(struct usb_bus *bus) { usb_needs_explore(bus, 0 /* no probe */ ); } #endif /*------------------------------------------------------------------------* * usbd_transfer_power_ref * * This function will modify the power save reference counts and * wakeup the USB device associated with the given USB transfer, if * needed. *------------------------------------------------------------------------*/ #if USB_HAVE_POWERD void usbd_transfer_power_ref(struct usb_xfer *xfer, int val) { static const usb_power_mask_t power_mask[4] = { [UE_CONTROL] = USB_HW_POWER_CONTROL, [UE_BULK] = USB_HW_POWER_BULK, [UE_INTERRUPT] = USB_HW_POWER_INTERRUPT, [UE_ISOCHRONOUS] = USB_HW_POWER_ISOC, }; struct usb_device *udev; uint8_t needs_explore; uint8_t needs_hw_power; uint8_t xfer_type; udev = xfer->xroot->udev; if (udev->device_index == USB_ROOT_HUB_ADDR) { /* no power save for root HUB */ return; } USB_BUS_LOCK(udev->bus); xfer_type = xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE; udev->pwr_save.last_xfer_time = ticks; udev->pwr_save.type_refs[xfer_type] += val; if (xfer->flags_int.control_xfr) { udev->pwr_save.read_refs += val; if (xfer->flags_int.usb_mode == USB_MODE_HOST) { /* * It is not allowed to suspend during a * control transfer: */ udev->pwr_save.write_refs += val; } } else if (USB_GET_DATA_ISREAD(xfer)) { udev->pwr_save.read_refs += val; } else { udev->pwr_save.write_refs += val; } if (val > 0) { if (udev->flags.self_suspended) needs_explore = usb_peer_should_wakeup(udev); else needs_explore = 0; if (!(udev->bus->hw_power_state & power_mask[xfer_type])) { DPRINTF("Adding type %u to power state\n", xfer_type); udev->bus->hw_power_state |= power_mask[xfer_type]; needs_hw_power = 1; } else { needs_hw_power = 0; } } else { needs_explore = 0; needs_hw_power = 0; } USB_BUS_UNLOCK(udev->bus); if (needs_explore) { DPRINTF("update\n"); usb_bus_power_update(udev->bus); } else if (needs_hw_power) { DPRINTF("needs power\n"); if (udev->bus->methods->set_hw_power != NULL) { (udev->bus->methods->set_hw_power) (udev->bus); } } } #endif /*------------------------------------------------------------------------* * usb_peer_should_wakeup * * This function returns non-zero if the current device should wake up. *------------------------------------------------------------------------*/ static uint8_t usb_peer_should_wakeup(struct usb_device *udev) { return (((udev->power_mode == USB_POWER_MODE_ON) && (udev->flags.usb_mode == USB_MODE_HOST)) || (udev->driver_added_refcount != udev->bus->driver_added_refcount) || (udev->re_enumerate_wait != USB_RE_ENUM_DONE) || (udev->pwr_save.type_refs[UE_ISOCHRONOUS] != 0) || (udev->pwr_save.write_refs != 0) || ((udev->pwr_save.read_refs != 0) && (udev->flags.usb_mode == USB_MODE_HOST) && (usb_peer_can_wakeup(udev) == 0))); } /*------------------------------------------------------------------------* * usb_bus_powerd * * This function implements the USB power daemon and is called * regularly from the USB explore thread. *------------------------------------------------------------------------*/ #if USB_HAVE_POWERD void usb_bus_powerd(struct usb_bus *bus) { struct usb_device *udev; usb_ticks_t temp; usb_ticks_t limit; usb_ticks_t mintime; usb_size_t type_refs[5]; uint8_t x; limit = usb_power_timeout; if (limit == 0) limit = hz; else if (limit > 255) limit = 255 * hz; else limit = limit * hz; DPRINTF("bus=%p\n", bus); USB_BUS_LOCK(bus); /* * The root HUB device is never suspended * and we simply skip it. */ for (x = USB_ROOT_HUB_ADDR + 1; x != bus->devices_max; x++) { udev = bus->devices[x]; if (udev == NULL) continue; temp = ticks - udev->pwr_save.last_xfer_time; if (usb_peer_should_wakeup(udev)) { /* check if we are suspended */ if (udev->flags.self_suspended != 0) { USB_BUS_UNLOCK(bus); usb_dev_resume_peer(udev); USB_BUS_LOCK(bus); } } else if ((temp >= limit) && (udev->flags.usb_mode == USB_MODE_HOST) && (udev->flags.self_suspended == 0)) { /* try to do suspend */ USB_BUS_UNLOCK(bus); usb_dev_suspend_peer(udev); USB_BUS_LOCK(bus); } } /* reset counters */ mintime = (usb_ticks_t)-1; type_refs[0] = 0; type_refs[1] = 0; type_refs[2] = 0; type_refs[3] = 0; type_refs[4] = 0; /* Re-loop all the devices to get the actual state */ for (x = USB_ROOT_HUB_ADDR + 1; x != bus->devices_max; x++) { udev = bus->devices[x]; if (udev == NULL) continue; /* we found a non-Root-Hub USB device */ type_refs[4] += 1; /* "last_xfer_time" can be updated by a resume */ temp = ticks - udev->pwr_save.last_xfer_time; /* * Compute minimum time since last transfer for the complete * bus: */ if (temp < mintime) mintime = temp; if (udev->flags.self_suspended == 0) { type_refs[0] += udev->pwr_save.type_refs[0]; type_refs[1] += udev->pwr_save.type_refs[1]; type_refs[2] += udev->pwr_save.type_refs[2]; type_refs[3] += udev->pwr_save.type_refs[3]; } } if (mintime >= (usb_ticks_t)(1 * hz)) { /* recompute power masks */ DPRINTF("Recomputing power masks\n"); bus->hw_power_state = 0; if (type_refs[UE_CONTROL] != 0) bus->hw_power_state |= USB_HW_POWER_CONTROL; if (type_refs[UE_BULK] != 0) bus->hw_power_state |= USB_HW_POWER_BULK; if (type_refs[UE_INTERRUPT] != 0) bus->hw_power_state |= USB_HW_POWER_INTERRUPT; if (type_refs[UE_ISOCHRONOUS] != 0) bus->hw_power_state |= USB_HW_POWER_ISOC; if (type_refs[4] != 0) bus->hw_power_state |= USB_HW_POWER_NON_ROOT_HUB; } USB_BUS_UNLOCK(bus); if (bus->methods->set_hw_power != NULL) { /* always update hardware power! */ (bus->methods->set_hw_power) (bus); } return; } #endif /*------------------------------------------------------------------------* * usb_dev_resume_peer * * This function will resume an USB peer and do the required USB * signalling to get an USB device out of the suspended state. *------------------------------------------------------------------------*/ static void usb_dev_resume_peer(struct usb_device *udev) { struct usb_bus *bus; int err; /* be NULL safe */ if (udev == NULL) return; /* check if already resumed */ if (udev->flags.self_suspended == 0) return; /* we need a parent HUB to do resume */ if (udev->parent_hub == NULL) return; DPRINTF("udev=%p\n", udev); if ((udev->flags.usb_mode == USB_MODE_DEVICE) && (udev->flags.remote_wakeup == 0)) { /* * If the host did not set the remote wakeup feature, we can * not wake it up either! */ DPRINTF("remote wakeup is not set!\n"); return; } /* get bus pointer */ bus = udev->bus; /* resume parent hub first */ usb_dev_resume_peer(udev->parent_hub); /* reduce chance of instant resume failure by waiting a little bit */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(20)); if (usb_device_20_compatible(udev)) { /* resume current port (Valid in Host and Device Mode) */ err = usbd_req_clear_port_feature(udev->parent_hub, NULL, udev->port_no, UHF_PORT_SUSPEND); if (err) { DPRINTFN(0, "Resuming port failed\n"); return; } } else { /* resume current port (Valid in Host and Device Mode) */ err = usbd_req_set_port_link_state(udev->parent_hub, NULL, udev->port_no, UPS_PORT_LS_U0); if (err) { DPRINTFN(0, "Resuming port failed\n"); return; } } /* resume settle time */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(usb_port_resume_delay)); if (bus->methods->device_resume != NULL) { /* resume USB device on the USB controller */ (bus->methods->device_resume) (udev); } USB_BUS_LOCK(bus); /* set that this device is now resumed */ udev->flags.self_suspended = 0; #if USB_HAVE_POWERD /* make sure that we don't go into suspend right away */ udev->pwr_save.last_xfer_time = ticks; /* make sure the needed power masks are on */ if (udev->pwr_save.type_refs[UE_CONTROL] != 0) bus->hw_power_state |= USB_HW_POWER_CONTROL; if (udev->pwr_save.type_refs[UE_BULK] != 0) bus->hw_power_state |= USB_HW_POWER_BULK; if (udev->pwr_save.type_refs[UE_INTERRUPT] != 0) bus->hw_power_state |= USB_HW_POWER_INTERRUPT; if (udev->pwr_save.type_refs[UE_ISOCHRONOUS] != 0) bus->hw_power_state |= USB_HW_POWER_ISOC; #endif USB_BUS_UNLOCK(bus); if (bus->methods->set_hw_power != NULL) { /* always update hardware power! */ (bus->methods->set_hw_power) (bus); } usbd_sr_lock(udev); /* notify all sub-devices about resume */ err = usb_suspend_resume(udev, 0); usbd_sr_unlock(udev); /* check if peer has wakeup capability */ if (usb_peer_can_wakeup(udev)) { /* clear remote wakeup */ err = usbd_req_clear_device_feature(udev, NULL, UF_DEVICE_REMOTE_WAKEUP); if (err) { DPRINTFN(0, "Clearing device " "remote wakeup failed: %s\n", usbd_errstr(err)); } } } /*------------------------------------------------------------------------* * usb_dev_suspend_peer * * This function will suspend an USB peer and do the required USB * signalling to get an USB device into the suspended state. *------------------------------------------------------------------------*/ static void usb_dev_suspend_peer(struct usb_device *udev) { struct usb_device *child; int err; uint8_t x; uint8_t nports; repeat: /* be NULL safe */ if (udev == NULL) return; /* check if already suspended */ if (udev->flags.self_suspended) return; /* we need a parent HUB to do suspend */ if (udev->parent_hub == NULL) return; DPRINTF("udev=%p\n", udev); /* check if the current device is a HUB */ if (udev->hub != NULL) { nports = udev->hub->nports; /* check if all devices on the HUB are suspended */ for (x = 0; x != nports; x++) { child = usb_bus_port_get_device(udev->bus, udev->hub->ports + x); if (child == NULL) continue; if (child->flags.self_suspended) continue; DPRINTFN(1, "Port %u is busy on the HUB!\n", x + 1); return; } } if (usb_peer_can_wakeup(udev)) { /* * This request needs to be done before we set * "udev->flags.self_suspended": */ /* allow device to do remote wakeup */ err = usbd_req_set_device_feature(udev, NULL, UF_DEVICE_REMOTE_WAKEUP); if (err) { DPRINTFN(0, "Setting device " "remote wakeup failed\n"); } } USB_BUS_LOCK(udev->bus); /* * Checking for suspend condition and setting suspended bit * must be atomic! */ err = usb_peer_should_wakeup(udev); if (err == 0) { /* * Set that this device is suspended. This variable * must be set before calling USB controller suspend * callbacks. */ udev->flags.self_suspended = 1; } USB_BUS_UNLOCK(udev->bus); if (err != 0) { if (usb_peer_can_wakeup(udev)) { /* allow device to do remote wakeup */ err = usbd_req_clear_device_feature(udev, NULL, UF_DEVICE_REMOTE_WAKEUP); if (err) { DPRINTFN(0, "Setting device " "remote wakeup failed\n"); } } if (udev->flags.usb_mode == USB_MODE_DEVICE) { /* resume parent HUB first */ usb_dev_resume_peer(udev->parent_hub); /* reduce chance of instant resume failure by waiting a little bit */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(20)); /* resume current port (Valid in Host and Device Mode) */ err = usbd_req_clear_port_feature(udev->parent_hub, NULL, udev->port_no, UHF_PORT_SUSPEND); /* resume settle time */ usb_pause_mtx(NULL, USB_MS_TO_TICKS(usb_port_resume_delay)); } DPRINTF("Suspend was cancelled!\n"); return; } usbd_sr_lock(udev); /* notify all sub-devices about suspend */ err = usb_suspend_resume(udev, 1); usbd_sr_unlock(udev); if (udev->bus->methods->device_suspend != NULL) { usb_timeout_t temp; /* suspend device on the USB controller */ (udev->bus->methods->device_suspend) (udev); /* do DMA delay */ temp = usbd_get_dma_delay(udev); if (temp != 0) usb_pause_mtx(NULL, USB_MS_TO_TICKS(temp)); } if (usb_device_20_compatible(udev)) { /* suspend current port */ err = usbd_req_set_port_feature(udev->parent_hub, NULL, udev->port_no, UHF_PORT_SUSPEND); if (err) { DPRINTFN(0, "Suspending port failed\n"); return; } } else { /* suspend current port */ err = usbd_req_set_port_link_state(udev->parent_hub, NULL, udev->port_no, UPS_PORT_LS_U3); if (err) { DPRINTFN(0, "Suspending port failed\n"); return; } } udev = udev->parent_hub; goto repeat; } /*------------------------------------------------------------------------* * usbd_set_power_mode * * This function will set the power mode, see USB_POWER_MODE_XXX for a * USB device. *------------------------------------------------------------------------*/ void usbd_set_power_mode(struct usb_device *udev, uint8_t power_mode) { /* filter input argument */ if ((power_mode != USB_POWER_MODE_ON) && (power_mode != USB_POWER_MODE_OFF)) power_mode = USB_POWER_MODE_SAVE; power_mode = usbd_filter_power_mode(udev, power_mode); udev->power_mode = power_mode; /* update copy of power mode */ #if USB_HAVE_POWERD usb_bus_power_update(udev->bus); #else usb_needs_explore(udev->bus, 0 /* no probe */ ); #endif } /*------------------------------------------------------------------------* * usbd_filter_power_mode * * This function filters the power mode based on hardware requirements. *------------------------------------------------------------------------*/ uint8_t usbd_filter_power_mode(struct usb_device *udev, uint8_t power_mode) { const struct usb_bus_methods *mtod; int8_t temp; mtod = udev->bus->methods; temp = -1; if (mtod->get_power_mode != NULL) (mtod->get_power_mode) (udev, &temp); /* check if we should not filter */ if (temp < 0) return (power_mode); /* use fixed power mode given by hardware driver */ return (temp); } /*------------------------------------------------------------------------* * usbd_start_re_enumerate * * This function starts re-enumeration of the given USB device. This * function does not need to be called BUS-locked. This function does * not wait until the re-enumeration is completed. *------------------------------------------------------------------------*/ void usbd_start_re_enumerate(struct usb_device *udev) { if (udev->re_enumerate_wait == USB_RE_ENUM_DONE) { udev->re_enumerate_wait = USB_RE_ENUM_START; usb_needs_explore(udev->bus, 0); } } /*-----------------------------------------------------------------------* * usbd_start_set_config * * This function starts setting a USB configuration. This function * does not need to be called BUS-locked. This function does not wait * until the set USB configuratino is completed. *------------------------------------------------------------------------*/ usb_error_t usbd_start_set_config(struct usb_device *udev, uint8_t index) { if (udev->re_enumerate_wait == USB_RE_ENUM_DONE) { if (udev->curr_config_index == index) { /* no change needed */ return (0); } udev->next_config_index = index; udev->re_enumerate_wait = USB_RE_ENUM_SET_CONFIG; usb_needs_explore(udev->bus, 0); return (0); } else if (udev->re_enumerate_wait == USB_RE_ENUM_SET_CONFIG) { if (udev->next_config_index == index) { /* no change needed */ return (0); } } return (USB_ERR_PENDING_REQUESTS); }