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freebsd-skq/sys/dev/usb/ehci.c
Weongyo Jeong d081353342 fix a ehci's bug that it's occurred when the xfers are aborted under 
heavy loads or working.  It looks this bug exists since r158869
so needs to revert a part of the previous.

Reviewed by:	imp
Tested by:	sam
MFC after:	3 weeks
2009-01-15 07:11:14 +00:00

3933 lines
100 KiB
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/* $NetBSD: ehci.c,v 1.91 2005/02/27 00:27:51 perry Exp $ */
/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) and by Charles M. Hannum.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
*
* The EHCI 1.0 spec can be found at
* http://developer.intel.com/technology/usb/download/ehci-r10.pdf
* and the USB 2.0 spec at
* http://www.usb.org/developers/docs/usb_20.zip
*
*/
/*
* TODO:
* 1) The EHCI driver lacks support for isochronous transfers, so
* devices using them don't work.
*
* 2) Interrupt transfer scheduling does not manage the time available
* in each frame, so it is possible for the transfers to overrun
* the end of the frame.
*
* 3) Command failures are not recovered correctly.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/lockmgr.h>
#if defined(DIAGNOSTIC) && defined(__i386__) && defined(__FreeBSD__)
#include <machine/cpu.h>
#endif
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <machine/bus.h>
#include <machine/endian.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/usb_quirks.h>
#include <dev/usb/ehcireg.h>
#include <dev/usb/ehcivar.h>
#define delay(d) DELAY(d)
#ifdef USB_DEBUG
#define EHCI_DEBUG USB_DEBUG
#define DPRINTF(x) do { if (ehcidebug) printf x; } while (0)
#define DPRINTFN(n,x) do { if (ehcidebug>(n)) printf x; } while (0)
int ehcidebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, ehci, CTLFLAG_RW, 0, "USB ehci");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, debug, CTLFLAG_RW,
&ehcidebug, 0, "ehci debug level");
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
struct ehci_pipe {
struct usbd_pipe pipe;
ehci_soft_qh_t *sqh;
union {
ehci_soft_qtd_t *qtd;
/* ehci_soft_itd_t *itd; */
} tail;
union {
/* Control pipe */
struct {
usb_dma_t reqdma;
u_int length;
/*ehci_soft_qtd_t *setup, *data, *stat;*/
} ctl;
/* Interrupt pipe */
struct {
u_int length;
} intr;
/* Bulk pipe */
struct {
u_int length;
} bulk;
/* Iso pipe */
struct {
u_int next_frame;
u_int cur_xfers;
} isoc;
} u;
};
static usbd_status ehci_open(usbd_pipe_handle);
static void ehci_poll(struct usbd_bus *);
static void ehci_softintr(void *);
static int ehci_intr1(ehci_softc_t *);
static void ehci_waitintr(ehci_softc_t *, usbd_xfer_handle);
static void ehci_check_intr(ehci_softc_t *, struct ehci_xfer *);
static void ehci_check_qh_intr(ehci_softc_t *, struct ehci_xfer *);
static void ehci_check_itd_intr(ehci_softc_t *, struct ehci_xfer *);
static void ehci_idone(struct ehci_xfer *);
static void ehci_timeout(void *);
static void ehci_timeout_task(void *);
static void ehci_intrlist_timeout(void *);
static usbd_status ehci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t);
static void ehci_freem(struct usbd_bus *, usb_dma_t *);
static usbd_xfer_handle ehci_allocx(struct usbd_bus *);
static void ehci_freex(struct usbd_bus *, usbd_xfer_handle);
static usbd_status ehci_root_ctrl_transfer(usbd_xfer_handle);
static usbd_status ehci_root_ctrl_start(usbd_xfer_handle);
static void ehci_root_ctrl_abort(usbd_xfer_handle);
static void ehci_root_ctrl_close(usbd_pipe_handle);
static void ehci_root_ctrl_done(usbd_xfer_handle);
static usbd_status ehci_root_intr_transfer(usbd_xfer_handle);
static usbd_status ehci_root_intr_start(usbd_xfer_handle);
static void ehci_root_intr_abort(usbd_xfer_handle);
static void ehci_root_intr_close(usbd_pipe_handle);
static void ehci_root_intr_done(usbd_xfer_handle);
static usbd_status ehci_device_ctrl_transfer(usbd_xfer_handle);
static usbd_status ehci_device_ctrl_start(usbd_xfer_handle);
static void ehci_device_ctrl_abort(usbd_xfer_handle);
static void ehci_device_ctrl_close(usbd_pipe_handle);
static void ehci_device_ctrl_done(usbd_xfer_handle);
static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle);
static usbd_status ehci_device_bulk_start(usbd_xfer_handle);
static void ehci_device_bulk_abort(usbd_xfer_handle);
static void ehci_device_bulk_close(usbd_pipe_handle);
static void ehci_device_bulk_done(usbd_xfer_handle);
static usbd_status ehci_device_intr_transfer(usbd_xfer_handle);
static usbd_status ehci_device_intr_start(usbd_xfer_handle);
static void ehci_device_intr_abort(usbd_xfer_handle);
static void ehci_device_intr_close(usbd_pipe_handle);
static void ehci_device_intr_done(usbd_xfer_handle);
static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle);
static usbd_status ehci_device_isoc_start(usbd_xfer_handle);
static void ehci_device_isoc_abort(usbd_xfer_handle);
static void ehci_device_isoc_close(usbd_pipe_handle);
static void ehci_device_isoc_done(usbd_xfer_handle);
static void ehci_device_clear_toggle(usbd_pipe_handle pipe);
static void ehci_noop(usbd_pipe_handle pipe);
static int ehci_str(usb_string_descriptor_t *, int, char *);
static void ehci_pcd(ehci_softc_t *, usbd_xfer_handle);
static void ehci_disown(ehci_softc_t *, int, int);
static ehci_soft_qh_t *ehci_alloc_sqh(ehci_softc_t *);
static void ehci_free_sqh(ehci_softc_t *, ehci_soft_qh_t *);
static ehci_soft_qtd_t *ehci_alloc_sqtd(ehci_softc_t *);
static void ehci_free_sqtd(ehci_softc_t *, ehci_soft_qtd_t *);
static usbd_status ehci_alloc_sqtd_chain(struct ehci_pipe *,
ehci_softc_t *, int, int, usbd_xfer_handle,
ehci_soft_qtd_t *, ehci_soft_qtd_t *,
ehci_soft_qtd_t **, ehci_soft_qtd_t **);
static void ehci_free_sqtd_chain(ehci_softc_t *, ehci_soft_qh_t *,
ehci_soft_qtd_t *, ehci_soft_qtd_t *);
static ehci_soft_itd_t *ehci_alloc_itd(ehci_softc_t *);
static void ehci_free_itd(ehci_softc_t *, ehci_soft_itd_t *);
static void ehci_rem_free_itd_chain(ehci_softc_t *,
struct ehci_xfer *);
static void ehci_abort_isoc_xfer(usbd_xfer_handle, usbd_status);
static usbd_status ehci_device_request(usbd_xfer_handle xfer);
static usbd_status ehci_device_setintr(ehci_softc_t *, ehci_soft_qh_t *,
int ival);
static void ehci_add_qh(ehci_softc_t *, ehci_soft_qh_t *,
ehci_soft_qh_t *);
static void ehci_rem_qh(ehci_softc_t *, ehci_soft_qh_t *,
ehci_soft_qh_t *);
static void ehci_activate_qh(ehci_softc_t *sc, ehci_soft_qh_t *,
ehci_soft_qtd_t *);
static void ehci_sync_hc(ehci_softc_t *);
static void ehci_close_pipe(usbd_pipe_handle, ehci_soft_qh_t *);
static void ehci_abort_xfer(usbd_xfer_handle, usbd_status);
ehci_softc_t *theehci;
#define EHCI_NULL(sc) htohc32(sc, EHCI_LINK_TERMINATE)
#define EHCI_INTR_ENDPT 1
#define ehci_add_intr_list(sc, ex) \
LIST_INSERT_HEAD(&(sc)->sc_intrhead, (ex), inext);
#define ehci_del_intr_list(ex) \
do { \
LIST_REMOVE((ex), inext); \
(ex)->inext.le_prev = NULL; \
} while (0)
#define ehci_active_intr_list(ex) ((ex)->inext.le_prev != NULL)
static struct usbd_bus_methods ehci_bus_methods = {
ehci_open,
ehci_softintr,
ehci_poll,
ehci_allocm,
ehci_freem,
ehci_allocx,
ehci_freex,
};
static struct usbd_pipe_methods ehci_root_ctrl_methods = {
ehci_root_ctrl_transfer,
ehci_root_ctrl_start,
ehci_root_ctrl_abort,
ehci_root_ctrl_close,
ehci_noop,
ehci_root_ctrl_done,
};
static struct usbd_pipe_methods ehci_root_intr_methods = {
ehci_root_intr_transfer,
ehci_root_intr_start,
ehci_root_intr_abort,
ehci_root_intr_close,
ehci_noop,
ehci_root_intr_done,
};
static struct usbd_pipe_methods ehci_device_ctrl_methods = {
ehci_device_ctrl_transfer,
ehci_device_ctrl_start,
ehci_device_ctrl_abort,
ehci_device_ctrl_close,
ehci_noop,
ehci_device_ctrl_done,
};
static struct usbd_pipe_methods ehci_device_intr_methods = {
ehci_device_intr_transfer,
ehci_device_intr_start,
ehci_device_intr_abort,
ehci_device_intr_close,
ehci_device_clear_toggle,
ehci_device_intr_done,
};
static struct usbd_pipe_methods ehci_device_bulk_methods = {
ehci_device_bulk_transfer,
ehci_device_bulk_start,
ehci_device_bulk_abort,
ehci_device_bulk_close,
ehci_device_clear_toggle,
ehci_device_bulk_done,
};
static struct usbd_pipe_methods ehci_device_isoc_methods = {
ehci_device_isoc_transfer,
ehci_device_isoc_start,
ehci_device_isoc_abort,
ehci_device_isoc_close,
ehci_noop,
ehci_device_isoc_done,
};
usbd_status
ehci_reset(ehci_softc_t *sc)
{
u_int32_t hcr;
u_int i;
EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET);
for (i = 0; i < 100; i++) {
usb_delay_ms(&sc->sc_bus, 1);
hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET;
if (!hcr) {
if (sc->sc_flags & (EHCI_SCFLG_SETMODE | EHCI_SCFLG_BIGEMMIO)) {
/*
* Force USBMODE as requested. Controllers
* may have multiple operating modes.
*/
uint32_t usbmode = EOREAD4(sc, EHCI_USBMODE);
if (sc->sc_flags & EHCI_SCFLG_SETMODE) {
usbmode = (usbmode &~ EHCI_UM_CM) | EHCI_UM_CM_HOST;
device_printf(sc->sc_bus.bdev,
"set host controller mode\n");
}
if (sc->sc_flags & EHCI_SCFLG_BIGEMMIO) {
usbmode = (usbmode &~ EHCI_UM_ES) | EHCI_UM_ES_BE;
device_printf(sc->sc_bus.bdev,
"set big-endian mode\n");
}
EOWRITE4(sc, EHCI_USBMODE, usbmode);
}
return (USBD_NORMAL_COMPLETION);
}
}
printf("%s: reset timeout\n", device_get_nameunit(sc->sc_bus.bdev));
return (USBD_IOERROR);
}
static usbd_status
ehci_hcreset(ehci_softc_t *sc)
{
u_int32_t hcr;
u_int i;
EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */
for (i = 0; i < 100; i++) {
usb_delay_ms(&sc->sc_bus, 1);
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr)
break;
}
if (!hcr)
/*
* Fall through and try reset anyway even though
* Table 2-9 in the EHCI spec says this will result
* in undefined behavior.
*/
device_printf(sc->sc_bus.bdev, "stop timeout\n");
return ehci_reset(sc);
}
usbd_status
ehci_init(ehci_softc_t *sc)
{
u_int32_t version, sparams, cparams, hcr;
u_int i;
usbd_status err;
ehci_soft_qh_t *sqh;
u_int ncomp;
int lev;
DPRINTF(("ehci_init: start\n"));
#ifdef EHCI_DEBUG
theehci = sc;
#endif
/* NB: must handle byte-order manually before ehci_hcreset */
sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
version = EREAD2(sc, EHCI_HCIVERSION);
device_printf(sc->sc_bus.bdev, "EHCI version %x.%x\n",
version >> 8, version & 0xff);
sparams = EREAD4(sc, EHCI_HCSPARAMS);
DPRINTF(("ehci_init: sparams=0x%x\n", sparams));
sc->sc_npcomp = EHCI_HCS_N_PCC(sparams);
ncomp = EHCI_HCS_N_CC(sparams);
if (ncomp != sc->sc_ncomp) {
printf("%s: wrong number of companions (%d != %d)\n",
device_get_nameunit(sc->sc_bus.bdev),
ncomp, sc->sc_ncomp);
if (ncomp < sc->sc_ncomp)
sc->sc_ncomp = ncomp;
}
if (sc->sc_ncomp > 0) {
printf("%s: companion controller%s, %d port%s each:",
device_get_nameunit(sc->sc_bus.bdev), sc->sc_ncomp!=1 ? "s" : "",
EHCI_HCS_N_PCC(sparams),
EHCI_HCS_N_PCC(sparams)!=1 ? "s" : "");
for (i = 0; i < sc->sc_ncomp; i++)
printf(" %s", device_get_nameunit(sc->sc_comps[i]->bdev));
printf("\n");
}
sc->sc_noport = EHCI_HCS_N_PORTS(sparams);
cparams = EREAD4(sc, EHCI_HCCPARAMS);
DPRINTF(("ehci_init: cparams=0x%x\n", cparams));
if (EHCI_HCC_64BIT(cparams)) {
/* MUST clear segment register if 64 bit capable. */
EWRITE4(sc, EHCI_CTRLDSSEGMENT, 0);
}
sc->sc_bus.usbrev = USBREV_2_0;
/* Reset the controller */
DPRINTF(("%s: resetting\n", device_get_nameunit(sc->sc_bus.bdev)));
err = ehci_hcreset(sc);
if (err != USBD_NORMAL_COMPLETION)
return (err);
/* frame list size at default, read back what we got and use that */
switch (EHCI_CMD_FLS(EOREAD4(sc, EHCI_USBCMD))) {
case 0: sc->sc_flsize = 1024; break;
case 1: sc->sc_flsize = 512; break;
case 2: sc->sc_flsize = 256; break;
case 3: return (USBD_IOERROR);
}
err = usb_allocmem(&sc->sc_bus, sc->sc_flsize * sizeof(ehci_link_t),
EHCI_FLALIGN_ALIGN, &sc->sc_fldma);
if (err)
return (err);
DPRINTF(("%s: flsize=%d\n", device_get_nameunit(sc->sc_bus.bdev),sc->sc_flsize));
sc->sc_flist = KERNADDR(&sc->sc_fldma, 0);
for (i = 0; i < sc->sc_flsize; i++) {
sc->sc_flist[i] = EHCI_NULL(sc);
}
EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0));
sc->sc_softitds = malloc(sc->sc_flsize * sizeof(ehci_soft_itd_t *),
M_USB, M_NOWAIT | M_ZERO);
if (sc->sc_softitds == NULL)
return (ENOMEM);
LIST_INIT(&sc->sc_freeitds);
/* Set up the bus struct. */
sc->sc_bus.methods = &ehci_bus_methods;
sc->sc_bus.pipe_size = sizeof(struct ehci_pipe);
sc->sc_eintrs = EHCI_NORMAL_INTRS;
/*
* Allocate the interrupt dummy QHs. These are arranged to give
* poll intervals that are powers of 2 times 1ms.
*/
for (i = 0; i < EHCI_INTRQHS; i++) {
sqh = ehci_alloc_sqh(sc);
if (sqh == NULL) {
err = USBD_NOMEM;
goto bad1;
}
sc->sc_islots[i].sqh = sqh;
}
lev = 0;
for (i = 0; i < EHCI_INTRQHS; i++) {
if (i == EHCI_IQHIDX(lev + 1, 0))
lev++;
sqh = sc->sc_islots[i].sqh;
if (i == 0) {
/* The last (1ms) QH terminates. */
sqh->qh.qh_link = EHCI_NULL(sc);
sqh->next = NULL;
} else {
/* Otherwise the next QH has half the poll interval */
sqh->next =
sc->sc_islots[EHCI_IQHIDX(lev - 1, i + 1)].sqh;
sqh->qh.qh_link = htohc32(sc, sqh->next->physaddr |
EHCI_LINK_QH);
}
sqh->qh.qh_endp = htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH));
sqh->qh.qh_endphub = htohc32(sc, EHCI_QH_SET_MULT(1));
sqh->qh.qh_curqtd = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_next = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_status = htohc32(sc, EHCI_QTD_HALTED);
}
/* Point the frame list at the last level (128ms). */
for (i = 0; i < sc->sc_flsize; i++) {
sc->sc_flist[i] = htohc32(sc, EHCI_LINK_QH |
sc->sc_islots[EHCI_IQHIDX(EHCI_IPOLLRATES - 1, i)].sqh->physaddr);
}
/* Allocate dummy QH that starts the async list. */
sqh = ehci_alloc_sqh(sc);
if (sqh == NULL) {
err = USBD_NOMEM;
goto bad1;
}
/* Fill the QH */
sqh->qh.qh_endp =
htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL);
sqh->qh.qh_link =
htohc32(sc, sqh->physaddr | EHCI_LINK_QH);
sqh->qh.qh_curqtd = EHCI_NULL(sc);
sqh->prev = sqh; /*It's a circular list.. */
sqh->next = sqh;
/* Fill the overlay qTD */
sqh->qh.qh_qtd.qtd_next = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_status = htohc32(sc, 0);
#ifdef EHCI_DEBUG
if (ehcidebug) {
ehci_dump_sqh(sc, sqh);
}
#endif
/* Point to async list */
sc->sc_async_head = sqh;
EOWRITE4(sc, EHCI_ASYNCLISTADDR, sqh->physaddr | EHCI_LINK_QH);
callout_init(&sc->sc_tmo_intrlist, 0);
lockinit(&sc->sc_doorbell_lock, PZERO, "ehcidb", 0, 0);
/* Enable interrupts */
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
/* Turn on controller */
EOWRITE4(sc, EHCI_USBCMD,
EHCI_CMD_ITC_2 | /* 2 microframes interrupt delay */
(EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_FLS_M) |
EHCI_CMD_ASE |
EHCI_CMD_PSE |
EHCI_CMD_RS);
/* Take over port ownership */
EOWRITE4(sc, EHCI_CONFIGFLAG, EHCI_CONF_CF);
for (i = 0; i < 100; i++) {
usb_delay_ms(&sc->sc_bus, 1);
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (!hcr)
break;
}
if (hcr) {
printf("%s: run timeout\n", device_get_nameunit(sc->sc_bus.bdev));
return (USBD_IOERROR);
}
return (USBD_NORMAL_COMPLETION);
#if 0
bad2:
ehci_free_sqh(sc, sc->sc_async_head);
#endif
bad1:
usb_freemem(&sc->sc_bus, &sc->sc_fldma);
return (err);
}
int
ehci_intr(void *v)
{
ehci_softc_t *sc = v;
if (sc == NULL || sc->sc_dying)
return (0);
/* If we get an interrupt while polling, then just ignore it. */
if (sc->sc_bus.use_polling) {
u_int32_t intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS));
if (intrs)
EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */
#ifdef DIAGNOSTIC
DPRINTFN(16, ("ehci_intr: ignored interrupt while polling\n"));
#endif
return (0);
}
return (ehci_intr1(sc));
}
static int
ehci_intr1(ehci_softc_t *sc)
{
u_int32_t intrs, eintrs;
DPRINTFN(20,("ehci_intr1: enter\n"));
/* In case the interrupt occurs before initialization has completed. */
if (sc == NULL) {
#ifdef DIAGNOSTIC
printf("ehci_intr1: sc == NULL\n");
#endif
return (0);
}
intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS));
if (!intrs)
return (0);
eintrs = intrs & sc->sc_eintrs;
DPRINTFN(7, ("ehci_intr1: sc=%p intrs=0x%x(0x%x) eintrs=0x%x\n",
sc, (u_int)intrs, EOREAD4(sc, EHCI_USBSTS),
(u_int)eintrs));
if (!eintrs)
return (0);
EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */
sc->sc_bus.intr_context++;
sc->sc_bus.no_intrs++;
if (eintrs & EHCI_STS_IAA) {
DPRINTF(("ehci_intr1: door bell\n"));
wakeup(&sc->sc_async_head);
eintrs &= ~EHCI_STS_IAA;
}
if (eintrs & (EHCI_STS_INT | EHCI_STS_ERRINT)) {
DPRINTFN(5,("ehci_intr1: %s %s\n",
eintrs & EHCI_STS_INT ? "INT" : "",
eintrs & EHCI_STS_ERRINT ? "ERRINT" : ""));
usb_schedsoftintr(&sc->sc_bus);
eintrs &= ~(EHCI_STS_INT | EHCI_STS_ERRINT);
}
if (eintrs & EHCI_STS_HSE) {
printf("%s: unrecoverable error, controller halted\n",
device_get_nameunit(sc->sc_bus.bdev));
/* XXX what else */
}
if (eintrs & EHCI_STS_PCD) {
ehci_pcd(sc, sc->sc_intrxfer);
eintrs &= ~EHCI_STS_PCD;
}
sc->sc_bus.intr_context--;
if (eintrs != 0) {
/* Block unprocessed interrupts. */
sc->sc_eintrs &= ~eintrs;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
printf("%s: blocking intrs 0x%x\n",
device_get_nameunit(sc->sc_bus.bdev), eintrs);
}
return (1);
}
/*
* XXX write back xfer data for architectures with a write-back
* data cache; this is a hack because usb is mis-architected
* in blindly mixing bus_dma w/ PIO.
*/
static __inline void
hacksync(usbd_xfer_handle xfer)
{
bus_dma_tag_t tag;
struct usb_dma_mapping *dmap;
if (xfer->length == 0)
return;
tag = xfer->pipe->device->bus->buffer_dmatag;
dmap = &xfer->dmamap;
bus_dmamap_sync(tag, dmap->map, BUS_DMASYNC_PREWRITE);
}
void
ehci_pcd(ehci_softc_t *sc, usbd_xfer_handle xfer)
{
usbd_pipe_handle pipe;
u_char *p;
int i, m;
if (xfer == NULL) {
/* Just ignore the change. */
return;
}
pipe = xfer->pipe;
p = xfer->buffer;
m = min(sc->sc_noport, xfer->length * 8 - 1);
memset(p, 0, xfer->length);
for (i = 1; i <= m; i++) {
/* Pick out CHANGE bits from the status reg. */
if (EOREAD4(sc, EHCI_PORTSC(i)) & EHCI_PS_CLEAR)
p[i/8] |= 1 << (i%8);
}
DPRINTF(("ehci_pcd: change=0x%02x\n", *p));
xfer->actlen = xfer->length;
xfer->status = USBD_NORMAL_COMPLETION;
hacksync(xfer); /* XXX to compensate for usb_transfer_complete */
usb_transfer_complete(xfer);
}
void
ehci_softintr(void *v)
{
ehci_softc_t *sc = v;
struct ehci_xfer *ex, *nextex;
DPRINTFN(10,("%s: ehci_softintr (%d)\n", device_get_nameunit(sc->sc_bus.bdev),
sc->sc_bus.intr_context));
sc->sc_bus.intr_context++;
/*
* The only explanation I can think of for why EHCI is as brain dead
* as UHCI interrupt-wise is that Intel was involved in both.
* An interrupt just tells us that something is done, we have no
* clue what, so we need to scan through all active transfers. :-(
*/
for (ex = LIST_FIRST(&sc->sc_intrhead); ex; ex = nextex) {
nextex = LIST_NEXT(ex, inext);
ehci_check_intr(sc, ex);
}
/* Schedule a callout to catch any dropped transactions. */
if ((sc->sc_flags & EHCI_SCFLG_LOSTINTRBUG) &&
!LIST_EMPTY(&sc->sc_intrhead))
callout_reset(&sc->sc_tmo_intrlist, hz / 5,
ehci_intrlist_timeout, sc);
#ifdef USB_USE_SOFTINTR
if (sc->sc_softwake) {
sc->sc_softwake = 0;
wakeup(&sc->sc_softwake);
}
#endif /* USB_USE_SOFTINTR */
sc->sc_bus.intr_context--;
}
/* Check for an interrupt. */
void
ehci_check_intr(ehci_softc_t *sc, struct ehci_xfer *ex)
{
int attr;
DPRINTFN(/*15*/2, ("ehci_check_intr: ex=%p\n", ex));
attr = ex->xfer.pipe->endpoint->edesc->bmAttributes;
if (UE_GET_XFERTYPE(attr) == UE_ISOCHRONOUS)
ehci_check_itd_intr(sc, ex);
else
ehci_check_qh_intr(sc, ex);
}
void
ehci_check_qh_intr(ehci_softc_t *sc, struct ehci_xfer *ex)
{
ehci_soft_qtd_t *sqtd, *lsqtd;
u_int32_t status;
if (ex->sqtdstart == NULL) {
printf("ehci_check_qh_intr: not valid sqtd\n");
return;
}
lsqtd = ex->sqtdend;
#ifdef DIAGNOSTIC
if (lsqtd == NULL) {
printf("ehci_check_qh_intr: lsqtd==0\n");
return;
}
#endif
/*
* If the last TD is still active we need to check whether there
* is a an error somewhere in the middle, or whether there was a
* short packet (SPD and not ACTIVE).
*/
if (hc32toh(sc, lsqtd->qtd.qtd_status) & EHCI_QTD_ACTIVE) {
DPRINTFN(12, ("ehci_check_intr: active ex=%p\n", ex));
for (sqtd = ex->sqtdstart; sqtd != lsqtd; sqtd=sqtd->nextqtd) {
status = hc32toh(sc, sqtd->qtd.qtd_status);
/* If there's an active QTD the xfer isn't done. */
if (status & EHCI_QTD_ACTIVE)
break;
/* Any kind of error makes the xfer done. */
if (status & EHCI_QTD_HALTED)
goto done;
/* We want short packets, and it is short: it's done */
if (EHCI_QTD_GET_BYTES(status) != 0)
goto done;
}
DPRINTFN(12, ("ehci_check_intr: ex=%p std=%p still active\n",
ex, ex->sqtdstart));
return;
}
done:
DPRINTFN(12, ("ehci_check_intr: ex=%p done\n", ex));
callout_stop(&ex->xfer.timeout_handle);
usb_rem_task(ex->xfer.pipe->device, &ex->abort_task);
ehci_idone(ex);
}
void
ehci_check_itd_intr(ehci_softc_t *sc, struct ehci_xfer *ex)
{
ehci_soft_itd_t *itd;
int i;
if (ex->itdstart == NULL) {
printf("ehci_check_itd_intr: not valid itd\n");
return;
}
itd = ex->itdend;
#ifdef DIAGNOSTIC
if (itd == NULL) {
printf("ehci_check_itd_intr: itdend == 0\n");
return;
}
#endif
/*
* Step 1, check no active transfers in last itd, meaning we're finished
*/
for (i = 0; i < 8; i++) {
if (hc32toh(sc, itd->itd.itd_ctl[i]) & EHCI_ITD_ACTIVE)
break;
}
if (i == 8) {
goto done; /* All 8 descriptors inactive, it's done */
}
/*
* Step 2, check for errors in status bits, throughout chain...
*/
DPRINTFN(12, ("ehci_check_itd_intr: active ex=%p\n", ex));
for (itd = ex->itdstart; itd != ex->itdend; itd = itd->xfer_next) {
for (i = 0; i < 8; i++) {
if (hc32toh(sc, itd->itd.itd_ctl[i]) & (EHCI_ITD_BUF_ERR |
EHCI_ITD_BABBLE | EHCI_ITD_ERROR))
break;
}
if (i != 8) { /* Error in one of the itds */
goto done;
}
} /* itd search loop */
DPRINTFN(12, ("ehci_check_itd_intr: ex %p itd %p still active\n", ex,
ex->itdstart));
return;
done:
DPRINTFN(12, ("ehci_check_itd_intr: ex=%p done\n", ex));
callout_stop(&ex->xfer.timeout_handle);
usb_rem_task(ex->xfer.pipe->device, &ex->abort_task);
ehci_idone(ex);
}
void
ehci_idone(struct ehci_xfer *ex)
{
usbd_xfer_handle xfer = &ex->xfer;
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
ehci_softc_t *sc = (ehci_softc_t *)epipe->pipe.device->bus;
ehci_soft_qtd_t *sqtd, *lsqtd;
u_int32_t status = 0, nstatus = 0;
ehci_physaddr_t nextphys, altnextphys;
int actlen, cerr;
DPRINTFN(/*12*/2, ("ehci_idone: ex=%p\n", ex));
#ifdef DIAGNOSTIC
{
int s = splhigh();
if (ex->isdone) {
splx(s);
#ifdef EHCI_DEBUG
printf("ehci_idone: ex is done!\n ");
ehci_dump_exfer(ex);
#else
printf("ehci_idone: ex=%p is done!\n", ex);
#endif
return;
}
ex->isdone = 1;
splx(s);
}
#endif
if (xfer->status == USBD_CANCELLED ||
xfer->status == USBD_TIMEOUT) {
DPRINTF(("ehci_idone: aborted xfer=%p\n", xfer));
return;
}
#ifdef EHCI_DEBUG
DPRINTFN(/*10*/2, ("ehci_idone: xfer=%p, pipe=%p ready\n", xfer, epipe));
if (ehcidebug > 10)
ehci_dump_sqtds(sc, ex->sqtdstart);
#endif
/*
* Make sure that the QH overlay qTD does not reference any
* of the qTDs we are about to free. This is probably only
* necessary if the transfer is marked as HALTED.
*/
nextphys = EHCI_LINK_ADDR(hc32toh(sc, epipe->sqh->qh.qh_qtd.qtd_next));
altnextphys =
EHCI_LINK_ADDR(hc32toh(sc, epipe->sqh->qh.qh_qtd.qtd_altnext));
for (sqtd = ex->sqtdstart; sqtd != ex->sqtdend->nextqtd;
sqtd = sqtd->nextqtd) {
if (sqtd->physaddr == nextphys) {
epipe->sqh->qh.qh_qtd.qtd_next =
htohc32(sc, ex->sqtdend->nextqtd->physaddr);
DPRINTFN(4, ("ehci_idone: updated overlay next ptr\n"));
}
if (sqtd->physaddr == altnextphys) {
DPRINTFN(4,
("ehci_idone: updated overlay altnext ptr\n"));
epipe->sqh->qh.qh_qtd.qtd_altnext =
htohc32(sc, ex->sqtdend->nextqtd->physaddr);
}
}
/* The transfer is done, compute actual length and status. */
if (UE_GET_XFERTYPE(xfer->pipe->endpoint->edesc->bmAttributes)
== UE_ISOCHRONOUS) {
/* Isoc transfer */
struct ehci_soft_itd *itd;
int i, nframes, len, uframes;
nframes = 0;
actlen = 0;
switch (xfer->pipe->endpoint->edesc->bInterval) {
case 0:
panic("ehci: isoc xfer suddenly has 0 bInterval, "
"invalid\n");
case 1:
uframes = 1;
break;
case 2:
uframes = 2;
break;
case 3:
uframes = 4;
break;
default:
uframes = 8;
break;
}
for (itd = ex->itdstart; itd != NULL; itd = itd->xfer_next) {
for (i = 0; i < 8; i += uframes) {
/* XXX - driver didn't fill in the frame full
* of uframes. This leads to scheduling
* inefficiencies, but working around
* this doubles complexity of tracking
* an xfer.
*/
if (nframes >= xfer->nframes)
break;
status = hc32toh(sc, itd->itd.itd_ctl[i]);
len = EHCI_ITD_GET_LEN(status);
xfer->frlengths[nframes++] = len;
actlen += len;
}
if (nframes >= xfer->nframes)
break;
}
xfer->actlen = actlen;
xfer->status = USBD_NORMAL_COMPLETION;
goto end;
}
/* Continue processing xfers using queue heads */
lsqtd = ex->sqtdend;
actlen = 0;
for (sqtd = ex->sqtdstart; sqtd != lsqtd->nextqtd;
sqtd =sqtd->nextqtd) {
nstatus = hc32toh(sc, sqtd->qtd.qtd_status);
if (nstatus & EHCI_QTD_ACTIVE)
break;
status = nstatus;
/* halt is ok if descriptor is last, and complete */
if (sqtd == lsqtd && EHCI_QTD_GET_BYTES(status) == 0)
status &= ~EHCI_QTD_HALTED;
if (EHCI_QTD_GET_PID(status) != EHCI_QTD_PID_SETUP)
actlen += sqtd->len - EHCI_QTD_GET_BYTES(status);
}
cerr = EHCI_QTD_GET_CERR(status);
DPRINTFN(/*10*/2, ("ehci_idone: len=%d, actlen=%d, cerr=%d, "
"status=0x%x\n", xfer->length, actlen, cerr, status));
xfer->actlen = actlen;
if ((status & EHCI_QTD_HALTED) != 0) {
DPRINTFN(2,
("ehci_idone: error, addr=%d, endpt=0x%02x, status %b\n",
xfer->pipe->device->address,
xfer->pipe->endpoint->edesc->bEndpointAddress,
status, EHCI_QTD_STATUS_BITS));
if ((status & EHCI_QTD_BABBLE) == 0 && cerr > 0)
xfer->status = USBD_STALLED;
else
xfer->status = USBD_IOERROR; /* more info XXX */
} else {
xfer->status = USBD_NORMAL_COMPLETION;
}
#ifdef EHCI_DEBUG
if (ehcidebug > 2) {
ehci_dump_sqh(sc, epipe->sqh);
ehci_dump_sqtds(sc, ex->sqtdstart);
}
#endif
end:
/* XXX transfer_complete memcpys out transfer data (for in endpoints)
* during this call, before methods->done is called: dma sync required
* beforehand?
*/
usb_transfer_complete(xfer);
DPRINTFN(/*12*/2, ("ehci_idone: ex=%p done\n", ex));
}
/*
* Wait here until controller claims to have an interrupt.
* Then call ehci_intr and return. Use timeout to avoid waiting
* too long.
*/
void
ehci_waitintr(ehci_softc_t *sc, usbd_xfer_handle xfer)
{
int timo = xfer->timeout;
int usecs;
u_int32_t intrs;
xfer->status = USBD_IN_PROGRESS;
for (usecs = timo * 1000000 / hz; usecs > 0; usecs -= 1000) {
usb_delay_ms(&sc->sc_bus, 1);
if (sc->sc_dying)
break;
intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS)) &
sc->sc_eintrs;
DPRINTFN(15,("ehci_waitintr: 0x%04x\n", intrs));
#ifdef EHCI_DEBUG
if (ehcidebug > 15)
ehci_dump_regs(sc);
#endif
if (intrs) {
ehci_intr1(sc);
if (xfer->status != USBD_IN_PROGRESS)
return;
}
}
/* Timeout */
DPRINTF(("ehci_waitintr: timeout\n"));
xfer->status = USBD_TIMEOUT;
usb_transfer_complete(xfer);
/* XXX should free TD */
}
void
ehci_poll(struct usbd_bus *bus)
{
ehci_softc_t *sc = (ehci_softc_t *)bus;
#ifdef EHCI_DEBUG
static int last;
int new;
new = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS));
if (new != last) {
DPRINTFN(10,("ehci_poll: intrs=0x%04x\n", new));
last = new;
}
#endif
if (EOREAD4(sc, EHCI_USBSTS) & sc->sc_eintrs)
ehci_intr1(sc);
}
int
ehci_detach(struct ehci_softc *sc, int flags)
{
int rv = 0;
sc->sc_dying = 1;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
(void) ehci_hcreset(sc);
callout_stop(&sc->sc_tmo_intrlist);
usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */
usb_freemem(&sc->sc_bus, &sc->sc_fldma);
/* XXX free other data structures XXX */
return (rv);
}
/*
* Handle suspend/resume.
*
* We need to switch to polling mode here, because this routine is
* called from an interrupt context. This is all right since we
* are almost suspended anyway.
*/
void
ehci_power(int why, void *v)
{
ehci_softc_t *sc = v;
u_int32_t cmd, hcr;
int s, i;
#ifdef EHCI_DEBUG
DPRINTF(("ehci_power: sc=%p, why=%d\n", sc, why));
if (ehcidebug > 0)
ehci_dump_regs(sc);
#endif
s = splhardusb();
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
sc->sc_bus.use_polling++;
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if ((cmd & EHCI_PS_PO) == 0 &&
(cmd & EHCI_PS_PE) == EHCI_PS_PE)
EOWRITE4(sc, EHCI_PORTSC(i),
cmd | EHCI_PS_SUSP);
}
sc->sc_cmd = EOREAD4(sc, EHCI_USBCMD);
cmd = sc->sc_cmd & ~(EHCI_CMD_ASE | EHCI_CMD_PSE);
EOWRITE4(sc, EHCI_USBCMD, cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) &
(EHCI_STS_ASS | EHCI_STS_PSS);
if (hcr == 0)
break;
usb_delay_ms(&sc->sc_bus, 1);
}
if (hcr != 0) {
printf("%s: reset timeout\n",
device_get_nameunit(sc->sc_bus.bdev));
}
cmd &= ~EHCI_CMD_RS;
EOWRITE4(sc, EHCI_USBCMD, cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr == EHCI_STS_HCH)
break;
usb_delay_ms(&sc->sc_bus, 1);
}
if (hcr != EHCI_STS_HCH) {
printf("%s: config timeout\n",
device_get_nameunit(sc->sc_bus.bdev));
}
sc->sc_bus.use_polling--;
break;
case PWR_RESUME:
sc->sc_bus.use_polling++;
/* restore things in case the bios sucks */
EOWRITE4(sc, EHCI_CTRLDSSEGMENT, 0);
EOWRITE4(sc, EHCI_PERIODICLISTBASE, DMAADDR(&sc->sc_fldma, 0));
EOWRITE4(sc, EHCI_ASYNCLISTADDR,
sc->sc_async_head->physaddr | EHCI_LINK_QH);
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
hcr = 0;
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if ((cmd & EHCI_PS_PO) == 0 &&
(cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP) {
EOWRITE4(sc, EHCI_PORTSC(i),
cmd | EHCI_PS_FPR);
hcr = 1;
}
}
if (hcr) {
usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if ((cmd & EHCI_PS_PO) == 0 &&
(cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP)
EOWRITE4(sc, EHCI_PORTSC(i),
cmd & ~EHCI_PS_FPR);
}
}
EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr != EHCI_STS_HCH)
break;
usb_delay_ms(&sc->sc_bus, 1);
}
if (hcr == EHCI_STS_HCH) {
printf("%s: config timeout\n",
device_get_nameunit(sc->sc_bus.bdev));
}
usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
sc->sc_bus.use_polling--;
break;
case PWR_SOFTSUSPEND:
case PWR_SOFTSTANDBY:
case PWR_SOFTRESUME:
break;
}
splx(s);
#ifdef EHCI_DEBUG
DPRINTF(("ehci_power: sc=%p\n", sc));
if (ehcidebug > 0)
ehci_dump_regs(sc);
#endif
}
/*
* Shut down the controller when the system is going down.
*/
void
ehci_shutdown(void *v)
{
ehci_softc_t *sc = v;
DPRINTF(("ehci_shutdown: stopping the HC\n"));
(void) ehci_hcreset(sc);
}
usbd_status
ehci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
{
usbd_status err;
err = usb_allocmem(bus, size, 0, dma);
#ifdef EHCI_DEBUG
if (err)
printf("ehci_allocm: usb_allocmem()=%d\n", err);
#endif
return (err);
}
void
ehci_freem(struct usbd_bus *bus, usb_dma_t *dma)
{
usb_freemem(bus, dma);
}
usbd_xfer_handle
ehci_allocx(struct usbd_bus *bus)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
usbd_xfer_handle xfer;
xfer = STAILQ_FIRST(&sc->sc_free_xfers);
if (xfer != NULL) {
STAILQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
#ifdef DIAGNOSTIC
if (xfer->busy_free != XFER_FREE) {
printf("ehci_allocx: xfer=%p not free, 0x%08x\n", xfer,
xfer->busy_free);
}
#endif
} else {
xfer = malloc(sizeof(struct ehci_xfer), M_USB, M_NOWAIT);
}
if (xfer != NULL) {
memset(xfer, 0, sizeof(struct ehci_xfer));
usb_init_task(&EXFER(xfer)->abort_task, ehci_timeout_task,
xfer);
EXFER(xfer)->ehci_xfer_flags = 0;
#ifdef DIAGNOSTIC
EXFER(xfer)->isdone = 1;
xfer->busy_free = XFER_BUSY;
#endif
}
return (xfer);
}
void
ehci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
#ifdef DIAGNOSTIC
if (xfer->busy_free != XFER_BUSY) {
printf("ehci_freex: xfer=%p not busy, 0x%08x\n", xfer,
xfer->busy_free);
return;
}
xfer->busy_free = XFER_FREE;
if (!EXFER(xfer)->isdone) {
printf("ehci_freex: !isdone\n");
return;
}
#endif
STAILQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
}
static void
ehci_device_clear_toggle(usbd_pipe_handle pipe)
{
struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;
ehci_softc_t *sc = (ehci_softc_t *)epipe->pipe.device->bus;
DPRINTF(("ehci_device_clear_toggle: epipe=%p status=0x%x\n",
epipe, epipe->sqh->qh.qh_qtd.qtd_status));
#ifdef USB_DEBUG
if (ehcidebug)
usbd_dump_pipe(pipe);
#endif
KASSERT((epipe->sqh->qh.qh_qtd.qtd_status &
htohc32(sc, EHCI_QTD_ACTIVE)) == 0,
("ehci_device_clear_toggle: queue active"));
epipe->sqh->qh.qh_qtd.qtd_status &= htohc32(sc, ~EHCI_QTD_TOGGLE_MASK);
}
static void
ehci_noop(usbd_pipe_handle pipe)
{
}
usbd_status
ehci_open(usbd_pipe_handle pipe)
{
usbd_device_handle dev = pipe->device;
ehci_softc_t *sc = (ehci_softc_t *)dev->bus;
usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
u_int8_t addr = dev->address;
u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE;
struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;
ehci_soft_qh_t *sqh;
usbd_status err;
int s;
int ival, speed, naks;
int hshubaddr, hshubport;
DPRINTFN(1, ("ehci_open: pipe=%p, xfertype=%d, addr=%d, endpt=%d (%d)\n",
pipe, addr, ed->bEndpointAddress, sc->sc_addr, xfertype));
if (dev->myhsport) {
hshubaddr = dev->myhsport->parent->address;
hshubport = dev->myhsport->portno;
} else {
hshubaddr = 0;
hshubport = 0;
}
if (sc->sc_dying)
return (USBD_IOERROR);
if (addr == sc->sc_addr) {
switch (ed->bEndpointAddress) {
case USB_CONTROL_ENDPOINT:
pipe->methods = &ehci_root_ctrl_methods;
break;
case UE_DIR_IN | EHCI_INTR_ENDPT:
pipe->methods = &ehci_root_intr_methods;
break;
default:
DPRINTF(("ehci_open: bad bEndpointAddress 0x%02x\n",
ed->bEndpointAddress));
return (USBD_INVAL);
}
return (USBD_NORMAL_COMPLETION);
}
/* XXX All this stuff is only valid for async. */
switch (dev->speed) {
case USB_SPEED_LOW: speed = EHCI_QH_SPEED_LOW; break;
case USB_SPEED_FULL: speed = EHCI_QH_SPEED_FULL; break;
case USB_SPEED_HIGH: speed = EHCI_QH_SPEED_HIGH; break;
default: panic("ehci_open: bad device speed %d", dev->speed);
}
if (speed != EHCI_QH_SPEED_HIGH && xfertype == UE_ISOCHRONOUS) {
printf("%s: *** Error: opening low/full speed isoc device on"
"ehci, this does not work yet. Feel free to implement\n",
device_get_nameunit(sc->sc_bus.bdev));
DPRINTFN(1,("ehci_open: hshubaddr=%d hshubport=%d\n",
hshubaddr, hshubport));
return USBD_INVAL;
}
naks = 8; /* XXX */
/* Allocate sqh for everything, save isoc xfers */
if (xfertype != UE_ISOCHRONOUS) {
sqh = ehci_alloc_sqh(sc);
if (sqh == NULL)
goto bad0;
/* qh_link filled when the QH is added */
sqh->qh.qh_endp = htohc32(sc,
EHCI_QH_SET_ADDR(addr) |
EHCI_QH_SET_ENDPT(UE_GET_ADDR(ed->bEndpointAddress)) |
EHCI_QH_SET_EPS(speed) |
(xfertype == UE_CONTROL ? EHCI_QH_DTC : 0) |
EHCI_QH_SET_MPL(UGETW(ed->wMaxPacketSize)) |
(speed != EHCI_QH_SPEED_HIGH && xfertype == UE_CONTROL ?
EHCI_QH_CTL : 0) |
EHCI_QH_SET_NRL(naks)
);
sqh->qh.qh_endphub = htohc32(sc,
EHCI_QH_SET_MULT(1) |
EHCI_QH_SET_HUBA(hshubaddr) |
EHCI_QH_SET_PORT(hshubport) |
EHCI_QH_SET_CMASK(0x1c) |
EHCI_QH_SET_SMASK(xfertype == UE_INTERRUPT ? 0x01 : 0)
);
sqh->qh.qh_curqtd = EHCI_NULL(sc);
/* The overlay qTD was already set up by ehci_alloc_sqh(). */
sqh->qh.qh_qtd.qtd_status =
htohc32(sc, EHCI_QTD_SET_TOGGLE(pipe->endpoint->savedtoggle));
epipe->sqh = sqh;
} else {
sqh = NULL;
}
switch (xfertype) {
case UE_CONTROL:
err = usb_allocmem(&sc->sc_bus, sizeof(usb_device_request_t),
0, &epipe->u.ctl.reqdma);
#ifdef EHCI_DEBUG
if (err)
printf("ehci_open: usb_allocmem()=%d\n", err);
#endif
if (err)
goto bad1;
pipe->methods = &ehci_device_ctrl_methods;
s = splusb();
ehci_add_qh(sc, sqh, sc->sc_async_head);
splx(s);
break;
case UE_BULK:
pipe->methods = &ehci_device_bulk_methods;
s = splusb();
ehci_add_qh(sc, sqh, sc->sc_async_head);
splx(s);
break;
case UE_INTERRUPT:
pipe->methods = &ehci_device_intr_methods;
ival = pipe->interval;
if (ival == USBD_DEFAULT_INTERVAL)
ival = ed->bInterval;
return (ehci_device_setintr(sc, sqh, ival));
case UE_ISOCHRONOUS:
pipe->methods = &ehci_device_isoc_methods;
if (ed->bInterval == 0 || ed->bInterval > 16) {
printf("ehci: opening pipe with invalid bInterval\n");
err = USBD_INVAL;
goto bad1;
}
if (UGETW(ed->wMaxPacketSize) == 0) {
printf("ehci: zero length endpoint open request\n");
err = USBD_INVAL;
goto bad1;
}
epipe->u.isoc.next_frame = 0;
epipe->u.isoc.cur_xfers = 0;
break;
default:
DPRINTF(("ehci: bad xfer type %d\n", xfertype));
return (USBD_INVAL);
}
return (USBD_NORMAL_COMPLETION);
bad1:
if (sqh != NULL)
ehci_free_sqh(sc, sqh);
return (err);
bad0:
return (USBD_NOMEM);
}
/*
* Add an ED to the schedule. Called at splusb().
* If in the async schedule, it will always have a next.
* If in the intr schedule it may not.
*/
void
ehci_add_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head)
{
SPLUSBCHECK;
sqh->next = head->next;
sqh->prev = head;
sqh->qh.qh_link = head->qh.qh_link;
head->next = sqh;
if (sqh->next)
sqh->next->prev = sqh;
head->qh.qh_link = htohc32(sc, sqh->physaddr | EHCI_LINK_QH);
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
printf("ehci_add_qh:\n");
ehci_dump_sqh(sc, sqh);
}
#endif
}
/*
* Remove an ED from the schedule. Called at splusb().
* Will always have a 'next' if it's in the async list as it's circular.
*/
void
ehci_rem_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head)
{
SPLUSBCHECK;
/* XXX */
sqh->prev->qh.qh_link = sqh->qh.qh_link;
sqh->prev->next = sqh->next;
if (sqh->next)
sqh->next->prev = sqh->prev;
ehci_sync_hc(sc);
}
/* Restart a QH following the addition of a qTD. */
void
ehci_activate_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qtd_t *sqtd)
{
KASSERT((sqtd->qtd.qtd_status & htohc32(sc, EHCI_QTD_ACTIVE)) == 0,
("ehci_activate_qh: already active"));
/*
* When a QH is idle, the overlay qTD should be marked as not
* halted and not active. This causes the host controller to
* retrieve the real qTD on each pass (rather than just examinig
* the overlay), so it will notice when we activate the qTD.
*/
if (sqtd == sqh->sqtd) {
/* Check that the hardware is in the state we expect. */
if (EHCI_LINK_ADDR(hc32toh(sc, sqh->qh.qh_qtd.qtd_next)) !=
sqtd->physaddr) {
#ifdef EHCI_DEBUG
printf("ehci_activate_qh: unexpected next ptr\n");
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, sqh->sqtd);
#endif
sqh->qh.qh_qtd.qtd_next = htohc32(sc, sqtd->physaddr);
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL(sc);
}
/* Ensure the flags are correct. */
sqh->qh.qh_qtd.qtd_status &= htohc32(sc, EHCI_QTD_PINGSTATE |
EHCI_QTD_TOGGLE_MASK);
}
/* Now activate the qTD. */
sqtd->qtd.qtd_status |= htohc32(sc, EHCI_QTD_ACTIVE);
}
/*
* Ensure that the HC has released all references to the QH. We do this
* by asking for a Async Advance Doorbell interrupt and then we wait for
* the interrupt.
* To make this easier we first obtain exclusive use of the doorbell.
*/
void
ehci_sync_hc(ehci_softc_t *sc)
{
int s, error;
if (sc->sc_dying) {
DPRINTFN(2,("ehci_sync_hc: dying\n"));
return;
}
DPRINTFN(2,("ehci_sync_hc: enter\n"));
/* get doorbell */
lockmgr(&sc->sc_doorbell_lock, LK_EXCLUSIVE, NULL);
s = splhardusb();
/* ask for doorbell */
EOWRITE4(sc, EHCI_USBCMD, EOREAD4(sc, EHCI_USBCMD) | EHCI_CMD_IAAD);
DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n",
EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS)));
error = tsleep(&sc->sc_async_head, PZERO, "ehcidi", hz); /* bell wait */
DPRINTFN(1,("ehci_sync_hc: cmd=0x%08x sts=0x%08x\n",
EOREAD4(sc, EHCI_USBCMD), EOREAD4(sc, EHCI_USBSTS)));
splx(s);
/* release doorbell */
lockmgr(&sc->sc_doorbell_lock, LK_RELEASE, NULL);
#ifdef DIAGNOSTIC
if (error)
printf("ehci_sync_hc: tsleep() = %d\n", error);
#endif
DPRINTFN(2,("ehci_sync_hc: exit\n"));
}
/*Call at splusb*/
void
ehci_rem_free_itd_chain(ehci_softc_t *sc, struct ehci_xfer *exfer)
{
struct ehci_soft_itd *itd, *prev;
prev = NULL;
if (exfer->itdstart == NULL || exfer->itdend == NULL)
panic("ehci isoc xfer being freed, but with no itd chain\n");
for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) {
prev = itd->u.frame_list.prev;
/* Unlink itd from hardware chain, or frame array */
if (prev == NULL) { /* We're at the table head */
sc->sc_softitds[itd->slot] = itd->u.frame_list.next;
sc->sc_flist[itd->slot] = itd->itd.itd_next;
if (itd->u.frame_list.next != NULL)
itd->u.frame_list.next->u.frame_list.prev =
NULL;
} else {
/* XXX this part is untested... */
prev->itd.itd_next = itd->itd.itd_next;
prev->u.frame_list.next = itd->u.frame_list.next;
if (itd->u.frame_list.next != NULL)
itd->u.frame_list.next->u.frame_list.prev =
prev;
}
}
prev = NULL;
for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) {
if (prev != NULL)
ehci_free_itd(sc, prev);
prev = itd;
}
if (prev)
ehci_free_itd(sc, prev);
exfer->itdstart = NULL;
exfer->itdend = NULL;
}
/***********/
/*
* Data structures and routines to emulate the root hub.
*/
static usb_device_descriptor_t ehci_devd = {
USB_DEVICE_DESCRIPTOR_SIZE,
UDESC_DEVICE, /* type */
{0x00, 0x02}, /* USB version */
UDCLASS_HUB, /* class */
UDSUBCLASS_HUB, /* subclass */
UDPROTO_HSHUBSTT, /* protocol */
64, /* max packet */
{0},{0},{0x00,0x01}, /* device id */
1,2,0, /* string indicies */
1 /* # of configurations */
};
static usb_device_qualifier_t ehci_odevd = {
USB_DEVICE_DESCRIPTOR_SIZE,
UDESC_DEVICE_QUALIFIER, /* type */
{0x00, 0x02}, /* USB version */
UDCLASS_HUB, /* class */
UDSUBCLASS_HUB, /* subclass */
UDPROTO_FSHUB, /* protocol */
64, /* max packet */
1, /* # of configurations */
0
};
static usb_config_descriptor_t ehci_confd = {
USB_CONFIG_DESCRIPTOR_SIZE,
UDESC_CONFIG,
{USB_CONFIG_DESCRIPTOR_SIZE +
USB_INTERFACE_DESCRIPTOR_SIZE +
USB_ENDPOINT_DESCRIPTOR_SIZE},
1,
1,
0,
UC_SELF_POWERED,
0 /* max power */
};
static usb_interface_descriptor_t ehci_ifcd = {
USB_INTERFACE_DESCRIPTOR_SIZE,
UDESC_INTERFACE,
0,
0,
1,
UICLASS_HUB,
UISUBCLASS_HUB,
UIPROTO_HSHUBSTT,
0
};
static usb_endpoint_descriptor_t ehci_endpd = {
USB_ENDPOINT_DESCRIPTOR_SIZE,
UDESC_ENDPOINT,
UE_DIR_IN | EHCI_INTR_ENDPT,
UE_INTERRUPT,
{8, 0}, /* max packet */
255
};
static usb_hub_descriptor_t ehci_hubd = {
USB_HUB_DESCRIPTOR_SIZE,
UDESC_HUB,
0,
{0,0},
0,
0,
{0},
};
static int
ehci_str(usb_string_descriptor_t *p, int l, char *s)
{
int i;
if (l == 0)
return (0);
p->bLength = 2 * strlen(s) + 2;
if (l == 1)
return (1);
p->bDescriptorType = UDESC_STRING;
l -= 2;
for (i = 0; s[i] && l > 1; i++, l -= 2)
USETW2(p->bString[i], 0, s[i]);
return (2*i+2);
}
/*
* Simulate a hardware hub by handling all the necessary requests.
*/
static usbd_status
ehci_root_ctrl_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
/* Insert last in queue. */
err = usb_insert_transfer(xfer);
if (err)
return (err);
/* Pipe isn't running, start first */
return (ehci_root_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
}
static usbd_status
ehci_root_ctrl_start(usbd_xfer_handle xfer)
{
ehci_softc_t *sc = (ehci_softc_t *)xfer->pipe->device->bus;
usb_device_request_t *req;
void *buf = NULL;
int port, i;
int s, len, value, index, l, totlen = 0;
usb_port_status_t ps;
usb_hub_descriptor_t hubd;
usbd_status err;
u_int32_t v;
if (sc->sc_dying)
return (USBD_IOERROR);
#ifdef DIAGNOSTIC
if (!(xfer->rqflags & URQ_REQUEST))
/* XXX panic */
return (USBD_INVAL);
#endif
req = &xfer->request;
DPRINTFN(4,("ehci_root_ctrl_start: type=0x%02x request=%02x\n",
req->bmRequestType, req->bRequest));
len = UGETW(req->wLength);
value = UGETW(req->wValue);
index = UGETW(req->wIndex);
if (len != 0)
buf = xfer->buffer;
#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):
if (len > 0) {
*(u_int8_t *)buf = sc->sc_conf;
totlen = 1;
}
break;
case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
DPRINTFN(8,("ehci_root_ctrl_start: wValue=0x%04x\n", value));
switch(value >> 8) {
case UDESC_DEVICE:
if ((value & 0xff) != 0) {
err = USBD_IOERROR;
goto ret;
}
totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
USETW(ehci_devd.idVendor, sc->sc_id_vendor);
memcpy(buf, &ehci_devd, l);
break;
/*
* We can't really operate at another speed, but the spec says
* we need this descriptor.
*/
case UDESC_DEVICE_QUALIFIER:
if ((value & 0xff) != 0) {
err = USBD_IOERROR;
goto ret;
}
totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
memcpy(buf, &ehci_odevd, l);
break;
/*
* We can't really operate at another speed, but the spec says
* we need this descriptor.
*/
case UDESC_OTHER_SPEED_CONFIGURATION:
case UDESC_CONFIG:
if ((value & 0xff) != 0) {
err = USBD_IOERROR;
goto ret;
}
totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
memcpy(buf, &ehci_confd, l);
((usb_config_descriptor_t *)buf)->bDescriptorType =
value >> 8;
buf = (char *)buf + l;
len -= l;
l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
totlen += l;
memcpy(buf, &ehci_ifcd, l);
buf = (char *)buf + l;
len -= l;
l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
totlen += l;
memcpy(buf, &ehci_endpd, l);
break;
case UDESC_STRING:
if (len == 0)
break;
*(u_int8_t *)buf = 0;
totlen = 1;
switch (value & 0xff) {
case 0: /* Language table */
totlen = ehci_str(buf, len, "\001");
break;
case 1: /* Vendor */
totlen = ehci_str(buf, len, sc->sc_vendor);
break;
case 2: /* Product */
totlen = ehci_str(buf, len, "EHCI root hub");
break;
}
break;
default:
err = USBD_IOERROR;
goto ret;
}
break;
case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
if (len > 0) {
*(u_int8_t *)buf = 0;
totlen = 1;
}
break;
case C(UR_GET_STATUS, UT_READ_DEVICE):
if (len > 1) {
USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
totlen = 2;
}
break;
case C(UR_GET_STATUS, UT_READ_INTERFACE):
case C(UR_GET_STATUS, UT_READ_ENDPOINT):
if (len > 1) {
USETW(((usb_status_t *)buf)->wStatus, 0);
totlen = 2;
}
break;
case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
if (value >= USB_MAX_DEVICES) {
err = USBD_IOERROR;
goto ret;
}
sc->sc_addr = value;
break;
case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
if (value != 0 && value != 1) {
err = USBD_IOERROR;
goto ret;
}
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 = USBD_IOERROR;
goto ret;
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(8, ("ehci_root_ctrl_start: UR_CLEAR_PORT_FEATURE "
"port=%d feature=%d\n",
index, value));
if (index < 1 || index > sc->sc_noport) {
err = USBD_IOERROR;
goto ret;
}
port = EHCI_PORTSC(index);
v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR;
switch(value) {
case UHF_PORT_ENABLE:
EOWRITE4(sc, port, v &~ EHCI_PS_PE);
break;
case UHF_PORT_SUSPEND:
EOWRITE4(sc, port, v &~ EHCI_PS_SUSP);
break;
case UHF_PORT_POWER:
EOWRITE4(sc, port, v &~ EHCI_PS_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(2,("ehci_root_ctrl_start: clear port test "
"%d\n", index));
break;
case UHF_PORT_INDICATOR:
DPRINTFN(2,("ehci_root_ctrl_start: clear port ind "
"%d\n", index));
EOWRITE4(sc, port, v &~ EHCI_PS_PIC);
break;
case UHF_C_PORT_CONNECTION:
EOWRITE4(sc, port, v | EHCI_PS_CSC);
break;
case UHF_C_PORT_ENABLE:
EOWRITE4(sc, port, v | EHCI_PS_PEC);
break;
case UHF_C_PORT_SUSPEND:
/* how? */
break;
case UHF_C_PORT_OVER_CURRENT:
EOWRITE4(sc, port, v | EHCI_PS_OCC);
break;
case UHF_C_PORT_RESET:
sc->sc_isreset = 0;
break;
default:
err = USBD_IOERROR;
goto ret;
}
break;
case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
if ((value & 0xff) != 0) {
err = USBD_IOERROR;
goto ret;
}
hubd = ehci_hubd;
hubd.bNbrPorts = sc->sc_noport;
v = EOREAD4(sc, EHCI_HCSPARAMS);
USETW(hubd.wHubCharacteristics,
EHCI_HCS_PPC(v) ? UHD_PWR_INDIVIDUAL : UHD_PWR_NO_SWITCH |
EHCI_HCS_P_INDICATOR(EREAD4(sc, EHCI_HCSPARAMS))
? UHD_PORT_IND : 0);
hubd.bPwrOn2PwrGood = 200; /* XXX can't find out? */
for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8)
hubd.DeviceRemovable[i++] = 0; /* XXX can't find out? */
hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i;
l = min(len, hubd.bDescLength);
totlen = l;
memcpy(buf, &hubd, l);
break;
case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
if (len != 4) {
err = USBD_IOERROR;
goto ret;
}
memset(buf, 0, len); /* ? XXX */
totlen = len;
break;
case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
DPRINTFN(8,("ehci_root_ctrl_start: get port status i=%d\n",
index));
if (index < 1 || index > sc->sc_noport) {
err = USBD_IOERROR;
goto ret;
}
if (len != 4) {
err = USBD_IOERROR;
goto ret;
}
v = EOREAD4(sc, EHCI_PORTSC(index));
DPRINTFN(8,("ehci_root_ctrl_start: port status=0x%04x\n",
v));
i = UPS_HIGH_SPEED;
if (sc->sc_flags & (EHCI_SCFLG_FORCESPEED | EHCI_SCFLG_TT)) {
if ((v & 0xc000000) == 0x8000000)
i = UPS_HIGH_SPEED;
else if ((v & 0xc000000) == 0x4000000)
i = UPS_LOW_SPEED;
else
i = 0;
}
if (v & EHCI_PS_CS) i |= UPS_CURRENT_CONNECT_STATUS;
if (v & EHCI_PS_PE) i |= UPS_PORT_ENABLED;
if (v & EHCI_PS_SUSP) i |= UPS_SUSPEND;
if (v & EHCI_PS_OCA) i |= UPS_OVERCURRENT_INDICATOR;
if (v & EHCI_PS_PR) i |= UPS_RESET;
if (v & EHCI_PS_PP) i |= UPS_PORT_POWER;
USETW(ps.wPortStatus, i);
i = 0;
if (v & EHCI_PS_CSC) i |= UPS_C_CONNECT_STATUS;
if (v & EHCI_PS_PEC) i |= UPS_C_PORT_ENABLED;
if (v & EHCI_PS_OCC) i |= UPS_C_OVERCURRENT_INDICATOR;
if (sc->sc_isreset) i |= UPS_C_PORT_RESET;
USETW(ps.wPortChange, i);
l = min(len, sizeof ps);
memcpy(buf, &ps, l);
totlen = l;
break;
case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
err = USBD_IOERROR;
goto ret;
case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
break;
case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
if (index < 1 || index > sc->sc_noport) {
err = USBD_IOERROR;
goto ret;
}
port = EHCI_PORTSC(index);
v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR;
switch(value) {
case UHF_PORT_ENABLE:
EOWRITE4(sc, port, v | EHCI_PS_PE);
break;
case UHF_PORT_SUSPEND:
EOWRITE4(sc, port, v | EHCI_PS_SUSP);
break;
case UHF_PORT_RESET:
DPRINTFN(5,("ehci_root_ctrl_start: reset port %d\n",
index));
if (EHCI_PS_IS_LOWSPEED(v) &&
(sc->sc_flags & EHCI_SCFLG_TT) == 0) {
/* Low speed device, give up ownership. */
ehci_disown(sc, index, 1);
break;
}
/* Start reset sequence. */
v &= ~ (EHCI_PS_PE | EHCI_PS_PR);
EOWRITE4(sc, port, v | EHCI_PS_PR);
/* Wait for reset to complete. */
usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY);
if (sc->sc_dying) {
err = USBD_IOERROR;
goto ret;
}
/* Terminate reset sequence. */
if (sc->sc_flags & EHCI_SCFLG_NORESTERM)
;
else
EOWRITE4(sc, port, v);
/* Wait for HC to complete reset. */
usb_delay_ms(&sc->sc_bus, EHCI_PORT_RESET_COMPLETE);
if (sc->sc_dying) {
err = USBD_IOERROR;
goto ret;
}
v = EOREAD4(sc, port);
DPRINTF(("ehci after reset, status=0x%08x\n", v));
if (v & EHCI_PS_PR) {
printf("%s: port reset timeout\n",
device_get_nameunit(sc->sc_bus.bdev));
return (USBD_TIMEOUT);
}
if (!(v & EHCI_PS_PE) &&
(sc->sc_flags & EHCI_SCFLG_TT) == 0) {
/* Not a high speed device, give up ownership.*/
ehci_disown(sc, index, 0);
break;
}
sc->sc_isreset = 1;
DPRINTF(("ehci port %d reset, status = 0x%08x\n",
index, v));
break;
case UHF_PORT_POWER:
DPRINTFN(2,("ehci_root_ctrl_start: set port power "
"%d\n", index));
EOWRITE4(sc, port, v | EHCI_PS_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(2,("ehci_root_ctrl_start: set port test "
"%d\n", index));
break;
case UHF_PORT_INDICATOR:
DPRINTFN(2,("ehci_root_ctrl_start: set port ind "
"%d\n", index));
EOWRITE4(sc, port, v | EHCI_PS_PIC);
break;
default:
err = USBD_IOERROR;
goto ret;
}
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 = USBD_IOERROR;
goto ret;
}
xfer->actlen = totlen;
err = USBD_NORMAL_COMPLETION;
ret:
xfer->status = err;
s = splusb();
hacksync(xfer); /* XXX to compensate for usb_transfer_complete */
usb_transfer_complete(xfer);
splx(s);
return (USBD_IN_PROGRESS);
}
void
ehci_disown(ehci_softc_t *sc, int index, int lowspeed)
{
int port;
u_int32_t v;
DPRINTF(("ehci_disown: index=%d lowspeed=%d\n", index, lowspeed));
#ifdef DIAGNOSTIC
if (sc->sc_npcomp != 0) {
int i = (index-1) / sc->sc_npcomp;
if (i >= sc->sc_ncomp)
printf("%s: strange port\n",
device_get_nameunit(sc->sc_bus.bdev));
else
printf("%s: handing over %s speed device on "
"port %d to %s\n",
device_get_nameunit(sc->sc_bus.bdev),
lowspeed ? "low" : "full",
index, device_get_nameunit(sc->sc_comps[i]->bdev));
} else {
printf("%s: npcomp == 0\n", device_get_nameunit(sc->sc_bus.bdev));
}
#endif
port = EHCI_PORTSC(index);
v = EOREAD4(sc, port) &~ EHCI_PS_CLEAR;
EOWRITE4(sc, port, v | EHCI_PS_PO);
}
/* Abort a root control request. */
static void
ehci_root_ctrl_abort(usbd_xfer_handle xfer)
{
/* Nothing to do, all transfers are synchronous. */
}
/* Close the root pipe. */
static void
ehci_root_ctrl_close(usbd_pipe_handle pipe)
{
DPRINTF(("ehci_root_ctrl_close\n"));
/* Nothing to do. */
}
void
ehci_root_intr_done(usbd_xfer_handle xfer)
{
}
static usbd_status
ehci_root_intr_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
/* Insert last in queue. */
err = usb_insert_transfer(xfer);
if (err)
return (err);
/* Pipe isn't running, start first */
return (ehci_root_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
}
static usbd_status
ehci_root_intr_start(usbd_xfer_handle xfer)
{
usbd_pipe_handle pipe = xfer->pipe;
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
if (sc->sc_dying)
return (USBD_IOERROR);
sc->sc_intrxfer = xfer;
return (USBD_IN_PROGRESS);
}
/* Abort a root interrupt request. */
static void
ehci_root_intr_abort(usbd_xfer_handle xfer)
{
int s;
if (xfer->pipe->intrxfer == xfer) {
DPRINTF(("ehci_root_intr_abort: remove\n"));
xfer->pipe->intrxfer = NULL;
}
xfer->status = USBD_CANCELLED;
s = splusb();
usb_transfer_complete(xfer);
splx(s);
}
/* Close the root pipe. */
static void
ehci_root_intr_close(usbd_pipe_handle pipe)
{
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
DPRINTF(("ehci_root_intr_close\n"));
sc->sc_intrxfer = NULL;
}
void
ehci_root_ctrl_done(usbd_xfer_handle xfer)
{
}
/************************/
ehci_soft_qh_t *
ehci_alloc_sqh(ehci_softc_t *sc)
{
ehci_soft_qh_t *sqh;
ehci_soft_qtd_t *sqtd;
usbd_status err;
int i, offs;
usb_dma_t dma;
if (sc->sc_freeqhs == NULL) {
DPRINTFN(2, ("ehci_alloc_sqh: allocating chunk\n"));
err = usb_allocmem(&sc->sc_bus, EHCI_SQH_SIZE * EHCI_SQH_CHUNK,
EHCI_PAGE_SIZE, &dma);
#ifdef EHCI_DEBUG
if (err)
printf("ehci_alloc_sqh: usb_allocmem()=%d\n", err);
#endif
if (err)
return (NULL);
for(i = 0; i < EHCI_SQH_CHUNK; i++) {
offs = i * EHCI_SQH_SIZE;
sqh = KERNADDR(&dma, offs);
sqh->physaddr = DMAADDR(&dma, offs);
sqh->next = sc->sc_freeqhs;
sc->sc_freeqhs = sqh;
}
}
/* Allocate the initial inactive sqtd. */
sqtd = ehci_alloc_sqtd(sc);
if (sqtd == NULL)
return (NULL);
sqtd->qtd.qtd_status = htohc32(sc, 0);
sqtd->qtd.qtd_next = EHCI_NULL(sc);
sqtd->qtd.qtd_altnext = EHCI_NULL(sc);
sqh = sc->sc_freeqhs;
sc->sc_freeqhs = sqh->next;
/* The overlay QTD should begin zeroed. */
sqh->qh.qh_qtd.qtd_next = htohc32(sc, sqtd->physaddr);
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_status = 0;
for (i = 0; i < EHCI_QTD_NBUFFERS; i++) {
sqh->qh.qh_qtd.qtd_buffer[i] = 0;
sqh->qh.qh_qtd.qtd_buffer_hi[i] = 0;
}
sqh->next = NULL;
sqh->prev = NULL;
sqh->sqtd = sqtd;
sqh->inactivesqtd = sqtd;
return (sqh);
}
void
ehci_free_sqh(ehci_softc_t *sc, ehci_soft_qh_t *sqh)
{
ehci_free_sqtd(sc, sqh->inactivesqtd);
sqh->next = sc->sc_freeqhs;
sc->sc_freeqhs = sqh;
}
ehci_soft_qtd_t *
ehci_alloc_sqtd(ehci_softc_t *sc)
{
ehci_soft_qtd_t *sqtd;
usbd_status err;
int i, offs;
usb_dma_t dma;
int s;
if (sc->sc_freeqtds == NULL) {
DPRINTFN(2, ("ehci_alloc_sqtd: allocating chunk\n"));
err = usb_allocmem(&sc->sc_bus, EHCI_SQTD_SIZE*EHCI_SQTD_CHUNK,
EHCI_PAGE_SIZE, &dma);
#ifdef EHCI_DEBUG
if (err)
printf("ehci_alloc_sqtd: usb_allocmem()=%d\n", err);
#endif
if (err)
return (NULL);
s = splusb();
for(i = 0; i < EHCI_SQTD_CHUNK; i++) {
offs = i * EHCI_SQTD_SIZE;
sqtd = KERNADDR(&dma, offs);
sqtd->physaddr = DMAADDR(&dma, offs);
sqtd->nextqtd = sc->sc_freeqtds;
sc->sc_freeqtds = sqtd;
}
splx(s);
}
s = splusb();
sqtd = sc->sc_freeqtds;
sc->sc_freeqtds = sqtd->nextqtd;
sqtd->qtd.qtd_next = EHCI_NULL(sc);
sqtd->qtd.qtd_altnext = EHCI_NULL(sc);
sqtd->qtd.qtd_status = 0;
for (i = 0; i < EHCI_QTD_NBUFFERS; i++) {
sqtd->qtd.qtd_buffer[i] = 0;
sqtd->qtd.qtd_buffer_hi[i] = 0;
}
sqtd->nextqtd = NULL;
sqtd->xfer = NULL;
splx(s);
return (sqtd);
}
void
ehci_free_sqtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd)
{
int s;
s = splusb();
sqtd->nextqtd = sc->sc_freeqtds;
sc->sc_freeqtds = sqtd;
splx(s);
}
usbd_status
ehci_alloc_sqtd_chain(struct ehci_pipe *epipe, ehci_softc_t *sc,
int alen, int rd, usbd_xfer_handle xfer, ehci_soft_qtd_t *start,
ehci_soft_qtd_t *newinactive, ehci_soft_qtd_t **sp, ehci_soft_qtd_t **ep)
{
ehci_soft_qtd_t *next, *cur;
ehci_physaddr_t dataphys, nextphys;
u_int32_t qtdstatus;
int adj, len, curlen, mps, offset, pagelen, seg, segoff;
int i, iscontrol, forceshort;
struct usb_dma_mapping *dma = &xfer->dmamap;
DPRINTFN(alen<4*4096,("ehci_alloc_sqtd_chain: start len=%d\n", alen));
offset = 0;
len = alen;
iscontrol = (epipe->pipe.endpoint->edesc->bmAttributes & UE_XFERTYPE) ==
UE_CONTROL;
qtdstatus = EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(rd ? EHCI_QTD_PID_IN : EHCI_QTD_PID_OUT) |
EHCI_QTD_SET_CERR(3)
/* IOC set below */
/* BYTES set below */
;
mps = UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize);
forceshort = ((xfer->flags & USBD_FORCE_SHORT_XFER) || len == 0) &&
len % mps == 0;
/*
* The control transfer data stage always starts with a toggle of 1.
* For other transfers we let the hardware track the toggle state.
*/
if (iscontrol)
qtdstatus |= EHCI_QTD_SET_TOGGLE(1);
if (start != NULL) {
/*
* If we are given a starting qTD, assume it is linked into
* an active QH so be careful not to mark it active.
*/
cur = start;
*sp = cur;
qtdstatus &= ~EHCI_QTD_ACTIVE;
} else {
cur = ehci_alloc_sqtd(sc);
*sp = cur;
if (cur == NULL)
goto nomem;
}
seg = 0;
segoff = 0;
for (;;) {
curlen = 0;
/* The EHCI hardware can handle at most 5 pages. */
for (i = 0; i < EHCI_QTD_NBUFFERS && curlen < len; i++) {
KASSERT(seg < dma->nsegs,
("ehci_alloc_sqtd_chain: overrun"));
dataphys = dma->segs[seg].ds_addr + segoff;
pagelen = dma->segs[seg].ds_len - segoff;
if (pagelen > len - curlen)
pagelen = len - curlen;
if (pagelen > EHCI_PAGE_SIZE -
EHCI_PAGE_OFFSET(dataphys))
pagelen = EHCI_PAGE_SIZE -
EHCI_PAGE_OFFSET(dataphys);
segoff += pagelen;
if (segoff >= dma->segs[seg].ds_len) {
KASSERT(segoff == dma->segs[seg].ds_len,
("ehci_alloc_sqtd_chain: overlap"));
seg++;
segoff = 0;
}
cur->qtd.qtd_buffer[i] = htohc32(sc, dataphys);
cur->qtd.qtd_buffer_hi[i] = 0;
curlen += pagelen;
/*
* Must stop if there is any gap before or after
* the page boundary.
*/
if (EHCI_PAGE_OFFSET(dataphys + pagelen) != 0)
break;
if (seg < dma->nsegs && EHCI_PAGE_OFFSET(segoff +
dma->segs[seg].ds_addr) != 0)
break;
}
/* Adjust down to a multiple of mps if not at the end. */
if (curlen < len && curlen % mps != 0) {
adj = curlen % mps;
curlen -= adj;
KASSERT(curlen > 0,
("ehci_alloc_sqtd_chain: need to copy"));
segoff -= adj;
if (segoff < 0) {
seg--;
segoff += dma->segs[seg].ds_len;
}
KASSERT(seg >= 0 && segoff >= 0,
("ehci_alloc_sqtd_chain: adjust to mps"));
}
len -= curlen;
if (len != 0 || forceshort) {
next = ehci_alloc_sqtd(sc);
if (next == NULL)
goto nomem;
nextphys = htohc32(sc, next->physaddr);
} else {
next = NULL;
nextphys = EHCI_NULL(sc);
}
cur->nextqtd = next;
cur->qtd.qtd_next = nextphys;
/* Make sure to stop after a short transfer. */
cur->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
cur->qtd.qtd_status =
htohc32(sc, qtdstatus | EHCI_QTD_SET_BYTES(curlen));
cur->xfer = xfer;
cur->len = curlen;
DPRINTFN(10,("ehci_alloc_sqtd_chain: curlen=%d\n", curlen));
if (iscontrol) {
/*
* adjust the toggle based on the number of packets
* in this qtd
*/
if ((((curlen + mps - 1) / mps) & 1) || curlen == 0)
qtdstatus ^= EHCI_QTD_TOGGLE_MASK;
}
qtdstatus |= EHCI_QTD_ACTIVE;
if (len == 0) {
if (!forceshort)
break;
forceshort = 0;
}
DPRINTFN(10,("ehci_alloc_sqtd_chain: extend chain\n"));
offset += curlen;
cur = next;
}
cur->qtd.qtd_status |= htohc32(sc, EHCI_QTD_IOC);
*ep = cur;
DPRINTFN(10,("ehci_alloc_sqtd_chain: return sqtd=%p sqtdend=%p\n",
*sp, *ep));
return (USBD_NORMAL_COMPLETION);
nomem:
/* XXX free chain */
DPRINTFN(-1,("ehci_alloc_sqtd_chain: no memory\n"));
return (USBD_NOMEM);
}
/* Free the chain starting at sqtd and end at the qTD before sqtdend */
static void
ehci_free_sqtd_chain(ehci_softc_t *sc, ehci_soft_qh_t *sqh,
ehci_soft_qtd_t *sqtd, ehci_soft_qtd_t *sqtdend)
{
ehci_soft_qtd_t *p, **prevp;
int i;
DPRINTFN(10,("ehci_free_sqtd_chain: sqtd=%p sqtdend=%p\n",
sqtd, sqtdend));
/* First unlink the chain from the QH's software qTD list. */
prevp = &sqh->sqtd;
for (p = sqh->sqtd; p != NULL; p = p->nextqtd) {
if (p == sqtd) {
*prevp = sqtdend;
break;
}
prevp = &p->nextqtd;
}
KASSERT(p != NULL, ("ehci_free_sqtd_chain: chain not found"));
for (i = 0; sqtd != sqtdend; sqtd = p, i++) {
p = sqtd->nextqtd;
ehci_free_sqtd(sc, sqtd);
}
}
ehci_soft_itd_t *
ehci_alloc_itd(ehci_softc_t *sc)
{
struct ehci_soft_itd *itd, *freeitd;
usbd_status err;
int i, s, offs, frindex, previndex;
usb_dma_t dma;
s = splusb();
/* Find an itd that wasn't freed this frame or last frame. This can
* discard itds that were freed before frindex wrapped around
* XXX - can this lead to thrashing? Could fix by enabling wrap-around
* interrupt and fiddling with list when that happens */
frindex = (EOREAD4(sc, EHCI_FRINDEX) + 1) >> 3;
previndex = (frindex != 0) ? frindex - 1 : sc->sc_flsize;
freeitd = NULL;
LIST_FOREACH(itd, &sc->sc_freeitds, u.free_list) {
if (itd == NULL)
break;
if (itd->slot != frindex && itd->slot != previndex) {
freeitd = itd;
break;
}
}
if (freeitd == NULL) {
DPRINTFN(2, ("ehci_alloc_itd allocating chunk\n"));
err = usb_allocmem(&sc->sc_bus, EHCI_ITD_SIZE * EHCI_ITD_CHUNK,
EHCI_PAGE_SIZE, &dma);
if (err) {
DPRINTF(("ehci_alloc_itd, alloc returned %d\n", err));
return NULL;
}
for (i = 0; i < EHCI_ITD_CHUNK; i++) {
offs = i * EHCI_ITD_SIZE;
itd = KERNADDR(&dma, offs);
itd->physaddr = DMAADDR(&dma, offs);
itd->dma = dma;
itd->offs = offs;
LIST_INSERT_HEAD(&sc->sc_freeitds, itd, u.free_list);
}
freeitd = LIST_FIRST(&sc->sc_freeitds);
}
itd = freeitd;
LIST_REMOVE(itd, u.free_list);
memset(&itd->itd, 0, sizeof(ehci_itd_t));
itd->u.frame_list.next = NULL;
itd->u.frame_list.prev = NULL;
itd->xfer_next = NULL;
itd->slot = 0;
splx(s);
return (itd);
}
void
ehci_free_itd(ehci_softc_t *sc, ehci_soft_itd_t *itd)
{
int s;
s = splusb();
LIST_INSERT_AFTER(LIST_FIRST(&sc->sc_freeitds), itd, u.free_list);
splx(s);
}
/****************/
/*
* Close a reqular pipe.
* Assumes that there are no pending transactions.
*/
void
ehci_close_pipe(usbd_pipe_handle pipe, ehci_soft_qh_t *head)
{
struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
ehci_soft_qh_t *sqh = epipe->sqh;
int s;
s = splusb();
ehci_rem_qh(sc, sqh, head);
splx(s);
pipe->endpoint->savedtoggle =
EHCI_QTD_GET_TOGGLE(hc32toh(sc, sqh->qh.qh_qtd.qtd_status));
ehci_free_sqh(sc, epipe->sqh);
}
/*
* Abort a device request.
* If this routine is called at splusb() it guarantees that the request
* will be removed from the hardware scheduling and that the callback
* for it will be called with USBD_CANCELLED status.
* It's impossible to guarantee that the requested transfer will not
* have happened since the hardware runs concurrently.
* If the transaction has already happened we rely on the ordinary
* interrupt processing to process it.
*/
void
ehci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
{
#define exfer EXFER(xfer)
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
ehci_softc_t *sc = (ehci_softc_t *)epipe->pipe.device->bus;
ehci_soft_qh_t *sqh = epipe->sqh;
ehci_soft_qtd_t *sqtd, *snext;
ehci_physaddr_t cur, us, next;
int s;
int hit, i;
/* int count = 0; */
ehci_soft_qh_t *psqh;
DPRINTF(("ehci_abort_xfer: xfer=%p pipe=%p\n", xfer, epipe));
if (sc->sc_dying) {
/* If we're dying, just do the software part. */
s = splusb();
xfer->status = status; /* make software ignore it */
callout_stop(&xfer->timeout_handle);
usb_rem_task(epipe->pipe.device, &exfer->abort_task);
usb_transfer_complete(xfer);
splx(s);
return;
}
if (xfer->device->bus->intr_context)
panic("ehci_abort_xfer: not in process context");
/*
* If an abort is already in progress then just wait for it to
* complete and return.
*/
if (exfer->ehci_xfer_flags & EHCI_XFER_ABORTING) {
DPRINTFN(2, ("ehci_abort_xfer: already aborting\n"));
/* No need to wait if we're aborting from a timeout. */
if (status == USBD_TIMEOUT)
return;
/* Override the status which might be USBD_TIMEOUT. */
xfer->status = status;
DPRINTFN(2, ("ehci_abort_xfer: waiting for abort to finish\n"));
exfer->ehci_xfer_flags |= EHCI_XFER_ABORTWAIT;
while (exfer->ehci_xfer_flags & EHCI_XFER_ABORTING)
tsleep(&exfer->ehci_xfer_flags, PZERO, "ehciaw", 0);
return;
}
/*
* Step 1: Make interrupt routine and timeouts ignore xfer.
*/
s = splusb();
exfer->ehci_xfer_flags |= EHCI_XFER_ABORTING;
xfer->status = status; /* make software ignore it */
callout_stop(&xfer->timeout_handle);
usb_rem_task(epipe->pipe.device, &exfer->abort_task);
splx(s);
/*
* Step 2: Wait until we know hardware has finished any possible
* use of the xfer. We do this by removing the entire
* queue from the async schedule and waiting for the doorbell.
* Nothing else should be touching the queue now.
*/
psqh = sqh->prev;
ehci_rem_qh(sc, sqh, psqh);
/*
* Step 3: make sure the soft interrupt routine
* has run. This should remove any completed items off the queue.
* The hardware has no reference to completed items (TDs).
* It's safe to remove them at any time.
*/
s = splusb();
#ifdef USB_USE_SOFTINTR
sc->sc_softwake = 1;
#endif /* USB_USE_SOFTINTR */
usb_schedsoftintr(&sc->sc_bus);
#ifdef USB_USE_SOFTINTR
tsleep(&sc->sc_softwake, PZERO, "ehciab", 0);
#endif /* USB_USE_SOFTINTR */
/*
* Step 4: Remove any vestiges of the xfer from the hardware.
* The complication here is that the hardware may have executed
* into or even beyond the xfer we're trying to abort.
* So as we're scanning the TDs of this xfer we check if
* the hardware points to any of them.
*
* first we need to see if there are any transfers
* on this queue before the xfer we are aborting.. we need
* to update any pointers that point to us to point past
* the aborting xfer. (If there is something past us).
* Hardware and software.
*/
cur = EHCI_LINK_ADDR(hc32toh(sc, sqh->qh.qh_curqtd));
hit = 0;
/* If they initially point here. */
us = exfer->sqtdstart->physaddr;
/* We will change them to point here */
snext = exfer->sqtdend->nextqtd;
next = (snext != NULL) ? htohc32(sc, snext->physaddr) : EHCI_NULL(sc);
/*
* Now loop through any qTDs before us and keep track of the pointer
* that points to us for the end.
*/
sqtd = sqh->sqtd;
while (sqtd && sqtd != exfer->sqtdstart) {
hit |= (cur == sqtd->physaddr);
if (EHCI_LINK_ADDR(hc32toh(sc, sqtd->qtd.qtd_next)) == us)
sqtd->qtd.qtd_next = next;
if (EHCI_LINK_ADDR(hc32toh(sc, sqtd->qtd.qtd_altnext)) == us)
sqtd->qtd.qtd_altnext = next;
sqtd = sqtd->nextqtd;
}
/*
* If we already saw the active one then we are pretty much done.
* We've done all the relinking we need to do.
*/
if (!hit) {
/*
* Now reinitialise the QH to point to the next qTD
* (if there is one). We only need to do this if
* it was previously pointing to us.
*/
for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) {
if (cur == sqtd->physaddr) {
hit++;
}
if (sqtd == exfer->sqtdend)
break;
}
sqtd = sqtd->nextqtd;
/*
* Only need to alter the QH if it was pointing at a qTD
* that we are removing.
*/
if (hit) {
sqh->qh.qh_qtd.qtd_next = htohc32(sc, snext->physaddr);
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL(sc);
sqh->qh.qh_qtd.qtd_status &=
htohc32(sc, EHCI_QTD_TOGGLE_MASK);
for (i = 0; i < EHCI_QTD_NBUFFERS; i++) {
sqh->qh.qh_qtd.qtd_buffer[i] = 0;
sqh->qh.qh_qtd.qtd_buffer_hi[i] = 0;
}
}
}
ehci_add_qh(sc, sqh, psqh);
/*
* Step 5: Execute callback.
*/
#ifdef DIAGNOSTIC
exfer->isdone = 1;
#endif
/* Do the wakeup first to avoid touching the xfer after the callback. */
exfer->ehci_xfer_flags &= ~EHCI_XFER_ABORTING;
if (exfer->ehci_xfer_flags & EHCI_XFER_ABORTWAIT) {
exfer->ehci_xfer_flags &= ~EHCI_XFER_ABORTWAIT;
wakeup(&exfer->ehci_xfer_flags);
}
usb_transfer_complete(xfer);
/* printf("%s: %d TDs aborted\n", __func__, count); */
splx(s);
#undef exfer
}
void
ehci_timeout(void *addr)
{
struct ehci_xfer *exfer = addr;
struct ehci_pipe *epipe = (struct ehci_pipe *)exfer->xfer.pipe;
ehci_softc_t *sc = (ehci_softc_t *)epipe->pipe.device->bus;
DPRINTF(("ehci_timeout: exfer=%p\n", exfer));
#ifdef USB_DEBUG
if (ehcidebug > 1)
usbd_dump_pipe(exfer->xfer.pipe);
#endif
if (sc->sc_dying) {
ehci_abort_xfer(&exfer->xfer, USBD_TIMEOUT);
return;
}
/* Execute the abort in a process context. */
usb_add_task(exfer->xfer.pipe->device, &exfer->abort_task,
USB_TASKQ_HC);
}
void
ehci_abort_isoc_xfer(usbd_xfer_handle xfer, usbd_status status)
{
ehci_isoc_trans_t trans_status;
struct ehci_pipe *epipe;
struct ehci_xfer *exfer;
ehci_softc_t *sc;
struct ehci_soft_itd *itd;
int s, i;
epipe = (struct ehci_pipe *) xfer->pipe;
exfer = EXFER(xfer);
sc = (ehci_softc_t *)epipe->pipe.device->bus;
DPRINTF(("ehci_abort_isoc_xfer: xfer %p pipe %p\n", xfer, epipe));
if (sc->sc_dying) {
s = splusb();
xfer->status = status;
callout_stop(&xfer->timeout_handle);
usb_rem_task(epipe->pipe.device, &exfer->abort_task);
usb_transfer_complete(xfer);
splx(s);
return;
}
if (exfer->ehci_xfer_flags & EHCI_XFER_ABORTING) {
DPRINTFN(2, ("ehci_abort_isoc_xfer: already aborting\n"));
#ifdef DIAGNOSTIC
if (status == USBD_TIMEOUT)
printf("ehci_abort_xfer: TIMEOUT while aborting\n");
#endif
xfer->status = status;
DPRINTFN(2, ("ehci_abort_xfer: waiting for abort to finish\n"));
exfer->ehci_xfer_flags |= EHCI_XFER_ABORTWAIT;
while (exfer->ehci_xfer_flags & EHCI_XFER_ABORTING)
tsleep(&exfer->ehci_xfer_flags, PZERO, "ehciaw", 0);
return;
}
exfer->ehci_xfer_flags |= EHCI_XFER_ABORTING;
xfer->status = status;
callout_stop(&xfer->timeout_handle);
usb_rem_task(epipe->pipe.device, &exfer->abort_task);
s = splusb();
for (itd = exfer->itdstart; itd != NULL; itd = itd->xfer_next) {
for (i = 0; i < 8; i++) {
trans_status = hc32toh(sc, itd->itd.itd_ctl[i]);
trans_status &= ~EHCI_ITD_ACTIVE;
itd->itd.itd_ctl[i] = htohc32(sc, trans_status);
}
}
splx(s);
s = splusb();
#ifdef USB_USE_SOFTINTR
sc->sc_softwake = 1;
#endif /* USB_USE_SOFTINTR */
usb_schedsoftintr(&sc->sc_bus);
#ifdef USB_USE_SOFTINTR
tsleep(&sc->sc_softwake, PZERO, "ehciab", 0);
#endif /* USB_USE_SOFTINTR */
splx(s);
#ifdef DIAGNOSTIC
exfer->isdone = 1;
#endif
exfer->ehci_xfer_flags &= ~EHCI_XFER_ABORTING;
if (exfer->ehci_xfer_flags & EHCI_XFER_ABORTWAIT) {
exfer->ehci_xfer_flags &= ~EHCI_XFER_ABORTWAIT;
wakeup(&exfer->ehci_xfer_flags);
}
usb_transfer_complete(xfer);
}
void
ehci_timeout_task(void *addr)
{
usbd_xfer_handle xfer = addr;
int s;
DPRINTF(("ehci_timeout_task: xfer=%p\n", xfer));
s = splusb();
ehci_abort_xfer(xfer, USBD_TIMEOUT);
splx(s);
}
/*
* Some EHCI chips from VIA / ATI seem to trigger interrupts before writing
* back the qTD status, or miss signalling occasionally under heavy load.
* If the host machine is too fast, we can miss transaction completion - when
* we scan the active list the transaction still seems to be active. This
* generally exhibits itself as a umass stall that never recovers.
*
* We work around this behaviour by setting up this callback after any softintr
* that completes with transactions still pending, giving us another chance to
* check for completion after the writeback has taken place.
*/
void
ehci_intrlist_timeout(void *arg)
{
ehci_softc_t *sc = arg;
int s = splusb();
DPRINTFN(3, ("ehci_intrlist_timeout\n"));
usb_schedsoftintr(&sc->sc_bus);
splx(s);
}
/************************/
static usbd_status
ehci_device_ctrl_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
/* Insert last in queue. */
err = usb_insert_transfer(xfer);
if (err)
return (err);
/* Pipe isn't running, start first */
return (ehci_device_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
}
static usbd_status
ehci_device_ctrl_start(usbd_xfer_handle xfer)
{
ehci_softc_t *sc = (ehci_softc_t *)xfer->pipe->device->bus;
usbd_status err;
if (sc->sc_dying)
return (USBD_IOERROR);
#ifdef DIAGNOSTIC
if (!(xfer->rqflags & URQ_REQUEST)) {
/* XXX panic */
printf("ehci_device_ctrl_transfer: not a request\n");
return (USBD_INVAL);
}
#endif
err = ehci_device_request(xfer);
if (err)
return (err);
if (sc->sc_bus.use_polling)
ehci_waitintr(sc, xfer);
return (USBD_IN_PROGRESS);
}
void
ehci_device_ctrl_done(usbd_xfer_handle xfer)
{
struct ehci_xfer *ex = EXFER(xfer);
ehci_softc_t *sc = (ehci_softc_t *)xfer->pipe->device->bus;
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
DPRINTFN(10,("ehci_ctrl_done: xfer=%p\n", xfer));
#ifdef DIAGNOSTIC
if (!(xfer->rqflags & URQ_REQUEST)) {
panic("ehci_ctrl_done: not a request");
}
#endif
if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) {
ehci_del_intr_list(ex); /* remove from active list */
ehci_free_sqtd_chain(sc, epipe->sqh, ex->sqtdstart,
ex->sqtdend->nextqtd);
}
DPRINTFN(5, ("ehci_ctrl_done: length=%d\n", xfer->actlen));
}
/* Abort a device control request. */
static void
ehci_device_ctrl_abort(usbd_xfer_handle xfer)
{
DPRINTF(("ehci_device_ctrl_abort: xfer=%p\n", xfer));
ehci_abort_xfer(xfer, USBD_CANCELLED);
}
/* Close a device control pipe. */
static void
ehci_device_ctrl_close(usbd_pipe_handle pipe)
{
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
/*struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;*/
DPRINTF(("ehci_device_ctrl_close: pipe=%p\n", pipe));
ehci_close_pipe(pipe, sc->sc_async_head);
}
usbd_status
ehci_device_request(usbd_xfer_handle xfer)
{
#define exfer EXFER(xfer)
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
usb_device_request_t *req = &xfer->request;
usbd_device_handle dev = epipe->pipe.device;
ehci_softc_t *sc = (ehci_softc_t *)dev->bus;
ehci_soft_qtd_t *newinactive, *setup, *stat, *next;
ehci_soft_qh_t *sqh;
int isread;
int len;
usbd_status err;
int s;
isread = req->bmRequestType & UT_READ;
len = UGETW(req->wLength);
DPRINTFN(3,("ehci_device_request: type=0x%02x, request=0x%02x, "
"wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
req->bmRequestType, req->bRequest, UGETW(req->wValue),
UGETW(req->wIndex), len, dev->address,
epipe->pipe.endpoint->edesc->bEndpointAddress));
newinactive = ehci_alloc_sqtd(sc);
if (newinactive == NULL) {
err = USBD_NOMEM;
goto bad1;
}
newinactive->qtd.qtd_status = htohc32(sc, 0);
newinactive->qtd.qtd_next = EHCI_NULL(sc);
newinactive->qtd.qtd_altnext = EHCI_NULL(sc);
stat = ehci_alloc_sqtd(sc);
if (stat == NULL) {
err = USBD_NOMEM;
goto bad2;
}
sqh = epipe->sqh;
setup = sqh->inactivesqtd;
sqh->inactivesqtd = newinactive;
epipe->u.ctl.length = len;
/* Set up data transaction */
if (len != 0) {
ehci_soft_qtd_t *end;
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer,
NULL, newinactive, &next, &end);
if (err)
goto bad3;
end->qtd.qtd_status &= htohc32(sc, ~EHCI_QTD_IOC);
end->nextqtd = stat;
end->qtd.qtd_next = htohc32(sc, stat->physaddr);
end->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
} else {
next = stat;
}
memcpy(KERNADDR(&epipe->u.ctl.reqdma, 0), req, sizeof *req);
/* Clear toggle, and do not activate until complete */
setup->qtd.qtd_status = htohc32(sc,
EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) |
EHCI_QTD_SET_CERR(3) |
EHCI_QTD_SET_TOGGLE(0) |
EHCI_QTD_SET_BYTES(sizeof *req)
);
setup->qtd.qtd_buffer[0] = htohc32(sc, DMAADDR(&epipe->u.ctl.reqdma, 0));
setup->qtd.qtd_buffer_hi[0] = 0;
setup->nextqtd = next;
setup->qtd.qtd_next = htohc32(sc, next->physaddr);
setup->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
setup->xfer = xfer;
setup->len = sizeof *req;
stat->qtd.qtd_status = htohc32(sc,
EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(isread ? EHCI_QTD_PID_OUT : EHCI_QTD_PID_IN) |
EHCI_QTD_SET_CERR(3) |
EHCI_QTD_SET_TOGGLE(1) |
EHCI_QTD_IOC
);
stat->qtd.qtd_buffer[0] = 0; /* XXX not needed? */
stat->qtd.qtd_buffer_hi[0] = 0; /* XXX not needed? */
stat->nextqtd = newinactive;
stat->qtd.qtd_next = htohc32(sc, newinactive->physaddr);
stat->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
stat->xfer = xfer;
stat->len = 0;
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
DPRINTF(("ehci_device_request:\n"));
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, setup);
}
#endif
exfer->sqtdstart = setup;
exfer->sqtdend = stat;
#ifdef DIAGNOSTIC
if (!exfer->isdone) {
printf("ehci_device_request: not done, exfer=%p\n", exfer);
}
exfer->isdone = 0;
#endif
/* Activate the new qTD in the QH list. */
s = splusb();
ehci_activate_qh(sc, sqh, setup);
if (xfer->timeout && !sc->sc_bus.use_polling) {
callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
ehci_timeout, xfer);
}
ehci_add_intr_list(sc, exfer);
xfer->status = USBD_IN_PROGRESS;
splx(s);
#ifdef EHCI_DEBUG
if (ehcidebug > 10) {
DPRINTF(("ehci_device_request: status=%x\n",
EOREAD4(sc, EHCI_USBSTS)));
delay(10000);
ehci_dump_regs(sc);
ehci_dump_sqh(sc, sc->sc_async_head);
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, setup);
}
#endif
return (USBD_NORMAL_COMPLETION);
bad3:
sqh->inactivesqtd = setup;
ehci_free_sqtd(sc, stat);
bad2:
ehci_free_sqtd(sc, newinactive);
bad1:
DPRINTFN(-1,("ehci_device_request: no memory\n"));
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
#undef exfer
}
/************************/
static usbd_status
ehci_device_bulk_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
/* Insert last in queue. */
err = usb_insert_transfer(xfer);
if (err)
return (err);
/* Pipe isn't running, start first */
return (ehci_device_bulk_start(STAILQ_FIRST(&xfer->pipe->queue)));
}
usbd_status
ehci_device_bulk_start(usbd_xfer_handle xfer)
{
#define exfer EXFER(xfer)
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
usbd_device_handle dev = epipe->pipe.device;
ehci_softc_t *sc = (ehci_softc_t *)dev->bus;
ehci_soft_qtd_t *data, *dataend, *newinactive;
ehci_soft_qh_t *sqh;
usbd_status err;
int len, isread, endpt;
int s;
DPRINTFN(2, ("ehci_device_bulk_start: xfer=%p len=%d flags=%d\n",
xfer, xfer->length, xfer->flags));
if (sc->sc_dying)
return (USBD_IOERROR);
#ifdef DIAGNOSTIC
if (xfer->rqflags & URQ_REQUEST)
panic("ehci_device_bulk_start: a request");
#endif
len = xfer->length;
endpt = epipe->pipe.endpoint->edesc->bEndpointAddress;
isread = UE_GET_DIR(endpt) == UE_DIR_IN;
sqh = epipe->sqh;
epipe->u.bulk.length = len;
newinactive = ehci_alloc_sqtd(sc);
if (newinactive == NULL) {
DPRINTFN(-1,("ehci_device_bulk_start: no sqtd memory\n"));
err = USBD_NOMEM;
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
}
newinactive->qtd.qtd_status = htohc32(sc, 0);
newinactive->qtd.qtd_next = EHCI_NULL(sc);
newinactive->qtd.qtd_altnext = EHCI_NULL(sc);
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer,
sqh->inactivesqtd, newinactive, &data, &dataend);
if (err) {
DPRINTFN(-1,("ehci_device_bulk_start: no memory\n"));
ehci_free_sqtd(sc, newinactive);
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
}
dataend->nextqtd = newinactive;
dataend->qtd.qtd_next = htohc32(sc, newinactive->physaddr);
dataend->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
sqh->inactivesqtd = newinactive;
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
DPRINTF(("ehci_device_bulk_start: data(1)\n"));
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, data);
}
#endif
/* Set up interrupt info. */
exfer->sqtdstart = data;
exfer->sqtdend = dataend;
#ifdef DIAGNOSTIC
if (!exfer->isdone) {
printf("ehci_device_bulk_start: not done, ex=%p\n", exfer);
}
exfer->isdone = 0;
#endif
s = splusb();
ehci_activate_qh(sc, sqh, data);
if (xfer->timeout && !sc->sc_bus.use_polling) {
callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
ehci_timeout, xfer);
}
ehci_add_intr_list(sc, exfer);
xfer->status = USBD_IN_PROGRESS;
splx(s);
#ifdef EHCI_DEBUG
if (ehcidebug > 10) {
DPRINTF(("ehci_device_bulk_start: data(2)\n"));
delay(10000);
DPRINTF(("ehci_device_bulk_start: data(3)\n"));
ehci_dump_regs(sc);
#if 0
printf("async_head:\n");
ehci_dump_sqh(sc->sc_async_head);
#endif
printf("sqh:\n");
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, data);
}
#endif
if (sc->sc_bus.use_polling)
ehci_waitintr(sc, xfer);
return (USBD_IN_PROGRESS);
#undef exfer
}
static void
ehci_device_bulk_abort(usbd_xfer_handle xfer)
{
DPRINTF(("ehci_device_bulk_abort: xfer=%p\n", xfer));
ehci_abort_xfer(xfer, USBD_CANCELLED);
}
/*
* Close a device bulk pipe.
*/
static void
ehci_device_bulk_close(usbd_pipe_handle pipe)
{
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
DPRINTF(("ehci_device_bulk_close: pipe=%p\n", pipe));
ehci_close_pipe(pipe, sc->sc_async_head);
}
void
ehci_device_bulk_done(usbd_xfer_handle xfer)
{
struct ehci_xfer *ex = EXFER(xfer);
ehci_softc_t *sc = (ehci_softc_t *)xfer->pipe->device->bus;
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
DPRINTFN(10,("ehci_bulk_done: xfer=%p, actlen=%d\n",
xfer, xfer->actlen));
if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) {
ehci_del_intr_list(ex); /* remove from active list */
ehci_free_sqtd_chain(sc, epipe->sqh, ex->sqtdstart,
ex->sqtdend->nextqtd);
}
DPRINTFN(5, ("ehci_bulk_done: length=%d\n", xfer->actlen));
}
/************************/
static usbd_status
ehci_device_setintr(ehci_softc_t *sc, ehci_soft_qh_t *sqh, int ival)
{
struct ehci_soft_islot *isp;
int islot, lev;
/* Find a poll rate that is large enough. */
for (lev = EHCI_IPOLLRATES - 1; lev > 0; lev--)
if (EHCI_ILEV_IVAL(lev) <= ival)
break;
/* Pick an interrupt slot at the right level. */
/* XXX could do better than picking at random. */
islot = EHCI_IQHIDX(lev, arc4random());
sqh->islot = islot;
isp = &sc->sc_islots[islot];
ehci_add_qh(sc, sqh, isp->sqh);
return (USBD_NORMAL_COMPLETION);
}
static usbd_status
ehci_device_intr_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
/* Insert last in queue. */
err = usb_insert_transfer(xfer);
if (err)
return (err);
/*
* Pipe isn't running (otherwise err would be USBD_INPROG),
* so start it first.
*/
return (ehci_device_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
}
static usbd_status
ehci_device_intr_start(usbd_xfer_handle xfer)
{
#define exfer EXFER(xfer)
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
usbd_device_handle dev = xfer->pipe->device;
ehci_softc_t *sc = (ehci_softc_t *)dev->bus;
ehci_soft_qtd_t *data, *dataend, *newinactive;
ehci_soft_qh_t *sqh;
usbd_status err;
int len, isread, endpt;
int s;
DPRINTFN(2, ("ehci_device_intr_start: xfer=%p len=%d flags=%d\n",
xfer, xfer->length, xfer->flags));
if (sc->sc_dying)
return (USBD_IOERROR);
#ifdef DIAGNOSTIC
if (xfer->rqflags & URQ_REQUEST)
panic("ehci_device_intr_start: a request");
#endif
len = xfer->length;
endpt = epipe->pipe.endpoint->edesc->bEndpointAddress;
isread = UE_GET_DIR(endpt) == UE_DIR_IN;
sqh = epipe->sqh;
epipe->u.intr.length = len;
newinactive = ehci_alloc_sqtd(sc);
if (newinactive == NULL) {
DPRINTFN(-1,("ehci_device_intr_start: no sqtd memory\n"));
err = USBD_NOMEM;
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
}
newinactive->qtd.qtd_status = htohc32(sc, 0);
newinactive->qtd.qtd_next = EHCI_NULL(sc);
newinactive->qtd.qtd_altnext = EHCI_NULL(sc);
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer,
sqh->inactivesqtd, newinactive, &data, &dataend);
if (err) {
DPRINTFN(-1, ("ehci_device_intr_start: no memory\n"));
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
}
dataend->nextqtd = newinactive;
dataend->qtd.qtd_next = htohc32(sc, newinactive->physaddr);
dataend->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
sqh->inactivesqtd = newinactive;
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
DPRINTF(("ehci_device_intr_start: data(1)\n"));
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, data);
}
#endif
/* Set up interrupt info. */
exfer->sqtdstart = data;
exfer->sqtdend = dataend;
#ifdef DIAGNOSTIC
if (!exfer->isdone) {
printf("ehci_device_intr_start: not done, ex=%p\n", exfer);
}
exfer->isdone = 0;
#endif
s = splusb();
ehci_activate_qh(sc, sqh, data);
if (xfer->timeout && !sc->sc_bus.use_polling) {
callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
ehci_timeout, xfer);
}
ehci_add_intr_list(sc, exfer);
xfer->status = USBD_IN_PROGRESS;
splx(s);
#ifdef EHCI_DEBUG
if (ehcidebug > 10) {
DPRINTF(("ehci_device_intr_start: data(2)\n"));
delay(10000);
DPRINTF(("ehci_device_intr_start: data(3)\n"));
ehci_dump_regs(sc);
printf("sqh:\n");
ehci_dump_sqh(sc, sqh);
ehci_dump_sqtds(sc, data);
}
#endif
if (sc->sc_bus.use_polling)
ehci_waitintr(sc, xfer);
return (USBD_IN_PROGRESS);
#undef exfer
}
static void
ehci_device_intr_abort(usbd_xfer_handle xfer)
{
DPRINTFN(1, ("ehci_device_intr_abort: xfer=%p\n", xfer));
if (xfer->pipe->intrxfer == xfer) {
DPRINTFN(1, ("ehci_device_intr_abort: remove\n"));
xfer->pipe->intrxfer = NULL;
}
/*
* XXX - abort_xfer uses ehci_sync_hc, which syncs via the advance
* async doorbell. That's dependant on the async list, wheras
* intr xfers are periodic, should not use this?
*/
ehci_abort_xfer(xfer, USBD_CANCELLED);
}
static void
ehci_device_intr_close(usbd_pipe_handle pipe)
{
ehci_softc_t *sc = (ehci_softc_t *)pipe->device->bus;
struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;
struct ehci_soft_islot *isp;
isp = &sc->sc_islots[epipe->sqh->islot];
ehci_close_pipe(pipe, isp->sqh);
}
static void
ehci_device_intr_done(usbd_xfer_handle xfer)
{
#define exfer EXFER(xfer)
struct ehci_xfer *ex = EXFER(xfer);
ehci_softc_t *sc = (ehci_softc_t *)xfer->pipe->device->bus;
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
ehci_soft_qtd_t *data, *dataend, *newinactive;
ehci_soft_qh_t *sqh;
usbd_status err;
int len, isread, endpt, s;
DPRINTFN(10, ("ehci_device_intr_done: xfer=%p, actlen=%d\n",
xfer, xfer->actlen));
sqh = epipe->sqh;
if (xfer->pipe->repeat) {
ehci_free_sqtd_chain(sc, sqh, ex->sqtdstart,
ex->sqtdend->nextqtd);
len = epipe->u.intr.length;
xfer->length = len;
endpt = epipe->pipe.endpoint->edesc->bEndpointAddress;
isread = UE_GET_DIR(endpt) == UE_DIR_IN;
newinactive = ehci_alloc_sqtd(sc);
if (newinactive == NULL) {
DPRINTFN(-1,
("ehci_device_intr_done: no sqtd memory\n"));
err = USBD_NOMEM;
xfer->status = err;
return;
}
newinactive->qtd.qtd_status = htohc32(sc, 0);
newinactive->qtd.qtd_next = EHCI_NULL(sc);
newinactive->qtd.qtd_altnext = EHCI_NULL(sc);
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer,
sqh->inactivesqtd, newinactive, &data, &dataend);
if (err) {
DPRINTFN(-1, ("ehci_device_intr_done: no memory\n"));
xfer->status = err;
return;
}
dataend->nextqtd = newinactive;
dataend->qtd.qtd_next = htohc32(sc, newinactive->physaddr);
dataend->qtd.qtd_altnext = htohc32(sc, newinactive->physaddr);
sqh->inactivesqtd = newinactive;
/* Set up interrupt info. */
exfer->sqtdstart = data;
exfer->sqtdend = dataend;
#ifdef DIAGNOSTIC
if (!exfer->isdone) {
printf("ehci_device_intr_done: not done, ex=%p\n",
exfer);
}
exfer->isdone = 0;
#endif
s = splusb();
ehci_activate_qh(sc, sqh, data);
if (xfer->timeout && !sc->sc_bus.use_polling) {
callout_reset(&xfer->timeout_handle,
MS_TO_TICKS(xfer->timeout), ehci_timeout, xfer);
}
splx(s);
xfer->status = USBD_IN_PROGRESS;
} else if (xfer->status != USBD_NOMEM && ehci_active_intr_list(ex)) {
ehci_del_intr_list(ex); /* remove from active list */
ehci_free_sqtd_chain(sc, sqh, ex->sqtdstart,
ex->sqtdend->nextqtd);
}
#undef exfer
}
/************************/
static usbd_status
ehci_device_isoc_transfer(usbd_xfer_handle xfer)
{
usbd_status err;
err = usb_insert_transfer(xfer);
if (err && err != USBD_IN_PROGRESS)
return (err);
return (ehci_device_isoc_start(xfer));
}
static usbd_status
ehci_device_isoc_start(usbd_xfer_handle xfer)
{
struct ehci_pipe *epipe;
usbd_device_handle dev;
ehci_softc_t *sc;
struct ehci_xfer *exfer;
ehci_soft_itd_t *itd, *prev, *start, *stop;
usb_dma_t *dma_buf;
int i, j, k, frames, uframes, ufrperframe;
int s, trans_count, offs, total_length;
int frindex;
start = NULL;
prev = NULL;
itd = NULL;
trans_count = 0;
total_length = 0;
exfer = (struct ehci_xfer *) xfer;
sc = (ehci_softc_t *)xfer->pipe->device->bus;
dev = xfer->pipe->device;
epipe = (struct ehci_pipe *)xfer->pipe;
/*
* To allow continuous transfers, above we start all transfers
* immediately. However, we're still going to get usbd_start_next call
* this when another xfer completes. So, check if this is already
* in progress or not
*/
if (exfer->itdstart != NULL)
return (USBD_IN_PROGRESS);
DPRINTFN(2, ("ehci_device_isoc_start: xfer %p len %d flags %d\n",
xfer, xfer->length, xfer->flags));
if (sc->sc_dying)
return (USBD_IOERROR);
/*
* To avoid complication, don't allow a request right now that'll span
* the entire frame table. To within 4 frames, to allow some leeway
* on either side of where the hc currently is.
*/
if ((1 << (epipe->pipe.endpoint->edesc->bInterval)) *
xfer->nframes >= (sc->sc_flsize - 4) * 8) {
printf("ehci: isoc descriptor requested that spans the entire"
" frametable, too many frames\n");
return (USBD_INVAL);
}
#ifdef DIAGNOSTIC
if (xfer->rqflags & URQ_REQUEST)
panic("ehci_device_isoc_start: request\n");
if (!exfer->isdone)
printf("ehci_device_isoc_start: not done, ex = %p\n", exfer);
exfer->isdone = 0;
#endif
/*
* Step 1: Allocate and initialize itds, how many do we need?
* One per transfer if interval >= 8 microframes, fewer if we use
* multiple microframes per frame.
*/
i = epipe->pipe.endpoint->edesc->bInterval;
if (i > 16 || i == 0) {
/* Spec page 271 says intervals > 16 are invalid */
DPRINTF(("ehci_device_isoc_start: bInvertal %d invalid\n", i));
return (USBD_INVAL);
}
switch (i) {
case 1:
ufrperframe = 8;
break;
case 2:
ufrperframe = 4;
break;
case 3:
ufrperframe = 2;
break;
default:
ufrperframe = 1;
break;
}
frames = (xfer->nframes + (ufrperframe - 1)) / ufrperframe;
uframes = 8 / ufrperframe;
if (frames == 0) {
DPRINTF(("ehci_device_isoc_start: frames == 0\n"));
return (USBD_INVAL);
}
dma_buf = xfer->buffer;
offs = 0;
for (i = 0; i < frames; i++) {
int froffs = offs;
itd = ehci_alloc_itd(sc);
if (prev != NULL) {
prev->itd.itd_next =
htohc32(sc, itd->physaddr | EHCI_LINK_ITD);
prev->xfer_next = itd;
} else {
start = itd;
}
/*
* Step 1.5, initialize uframes
*/
for (j = 0; j < 8; j += uframes) {
/* Calculate which page in the list this starts in */
int addr = DMAADDR(dma_buf, froffs);
addr = EHCI_PAGE_OFFSET(addr);
addr += (offs - froffs);
addr = EHCI_PAGE(addr);
addr /= EHCI_PAGE_SIZE;
/* This gets the initial offset into the first page,
* looks how far further along the current uframe
* offset is. Works out how many pages that is.
*/
itd->itd.itd_ctl[j] = htohc32(sc, EHCI_ITD_ACTIVE |
EHCI_ITD_SET_LEN(xfer->frlengths[trans_count]) |
EHCI_ITD_SET_PG(addr) |
EHCI_ITD_SET_OFFS(EHCI_PAGE_OFFSET(DMAADDR(dma_buf,
offs))));
total_length += xfer->frlengths[trans_count];
offs += xfer->frlengths[trans_count];
trans_count++;
if (trans_count >= xfer->nframes) { /*Set IOC*/
itd->itd.itd_ctl[j] |= htohc32(sc, EHCI_ITD_IOC);
}
}
/* Step 1.75, set buffer pointers. To simplify matters, all
* pointers are filled out for the next 7 hardware pages in
* the dma block, so no need to worry what pages to cover
* and what to not.
*/
for (j=0; j < 7; j++) {
/*
* Don't try to lookup a page that's past the end
* of buffer
*/
int page_offs = EHCI_PAGE(froffs +
(EHCI_PAGE_SIZE * j));
if (page_offs >= dma_buf->block->size)
break;
int page = DMAADDR(dma_buf, page_offs);
page = EHCI_PAGE(page);
itd->itd.itd_bufr[j] =
htohc32(sc, EHCI_ITD_SET_BPTR(page) | EHCI_LINK_ITD);
}
/*
* Other special values
*/
k = epipe->pipe.endpoint->edesc->bEndpointAddress;
itd->itd.itd_bufr[0] |= htohc32(sc,
EHCI_ITD_SET_EP(UE_GET_ADDR(k)) |
EHCI_ITD_SET_DADDR(epipe->pipe.device->address));
k = (UE_GET_DIR(epipe->pipe.endpoint->edesc->bEndpointAddress))
? 1 : 0;
j = UE_GET_SIZE(
UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize));
itd->itd.itd_bufr[1] |= htohc32(sc, EHCI_ITD_SET_DIR(k) |
EHCI_ITD_SET_MAXPKT(UE_GET_SIZE(j)));
/* FIXME: handle invalid trans */
itd->itd.itd_bufr[2] |=
htohc32(sc, EHCI_ITD_SET_MULTI(UE_GET_TRANS(j)+1));
prev = itd;
} /* End of frame */
stop = itd;
stop->xfer_next = NULL;
exfer->isoc_len = total_length;
/*
* Part 2: Transfer descriptors have now been set up, now they must
* be scheduled into the period frame list. Erk. Not wanting to
* complicate matters, transfer is denied if the transfer spans
* more than the period frame list.
*/
s = splusb();
/* Start inserting frames */
if (epipe->u.isoc.cur_xfers > 0) {
frindex = epipe->u.isoc.next_frame;
} else {
frindex = EOREAD4(sc, EHCI_FRINDEX);
frindex = frindex >> 3; /* Erase microframe index */
frindex += 2;
}
if (frindex >= sc->sc_flsize)
frindex &= (sc->sc_flsize - 1);
/* Whats the frame interval? */
i = (1 << epipe->pipe.endpoint->edesc->bInterval);
if (i / 8 == 0)
i = 1;
else
i /= 8;
itd = start;
for (j = 0; j < frames; j++) {
if (itd == NULL)
panic("ehci: unexpectedly ran out of isoc itds,"
"isoc_start\n");
itd->itd.itd_next = sc->sc_flist[frindex];
if (itd->itd.itd_next == 0)
/* FIXME: frindex table gets initialized to NULL
* or EHCI_NULL? */
itd->itd.itd_next = EHCI_NULL(sc);
sc->sc_flist[frindex] = htohc32(sc, EHCI_LINK_ITD | itd->physaddr);
itd->u.frame_list.next = sc->sc_softitds[frindex];
sc->sc_softitds[frindex] = itd;
if (itd->u.frame_list.next != NULL)
itd->u.frame_list.next->u.frame_list.prev = itd;
itd->slot = frindex;
itd->u.frame_list.prev = NULL;
frindex += i;
if (frindex >= sc->sc_flsize)
frindex -= sc->sc_flsize;
itd = itd->xfer_next;
}
epipe->u.isoc.cur_xfers++;
epipe->u.isoc.next_frame = frindex;
exfer->itdstart = start;
exfer->itdend = stop;
exfer->sqtdstart = NULL;
exfer->sqtdstart = NULL;
ehci_add_intr_list(sc, exfer);
xfer->status = USBD_IN_PROGRESS;
xfer->done = 0;
splx(s);
if (sc->sc_bus.use_polling) {
printf("Starting ehci isoc xfer with polling. Bad idea?\n");
ehci_waitintr(sc, xfer);
}
return (USBD_IN_PROGRESS);
}
static void
ehci_device_isoc_abort(usbd_xfer_handle xfer)
{
DPRINTFN(1, ("ehci_device_isoc_abort: xfer = %p\n", xfer));
ehci_abort_isoc_xfer(xfer, USBD_CANCELLED);
}
static void
ehci_device_isoc_close(usbd_pipe_handle pipe)
{
printf("ehci_device_isoc_close: nothing in the pipe to free?\n");
}
static void
ehci_device_isoc_done(usbd_xfer_handle xfer)
{
struct ehci_xfer *exfer;
ehci_softc_t *sc;
struct ehci_pipe *epipe;
int s;
exfer = EXFER(xfer);
sc = (ehci_softc_t *)xfer->pipe->device->bus;
epipe = (struct ehci_pipe *) xfer->pipe;
s = splusb();
epipe->u.isoc.cur_xfers--;
if (xfer->status != USBD_NOMEM && ehci_active_intr_list(exfer)) {
ehci_del_intr_list(exfer);
ehci_rem_free_itd_chain(sc, exfer);
}
splx(s);
}
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