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NetBSD/sys/dev/usb/ehci.c

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/* $NetBSD: ehci.c,v 1.50 2003/10/18 04:50:35 simonb Exp $ */
/*
* TODO
* hold off explorations by companion controllers until ehci has started.
*/
/*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net).
*
* 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
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.50 2003/10/18 04:50:35 simonb Exp $");
#include "ohci.h"
#include "uhci.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/queue.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>
#ifdef EHCI_DEBUG
#define DPRINTF(x) if (ehcidebug) printf x
#define DPRINTFN(n,x) if (ehcidebug>(n)) printf x
int ehcidebug = 0;
#ifndef __NetBSD__
#define bitmask_snprintf(q,f,b,l) snprintf((b), (l), "%b", (q), (f))
#endif
#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 */
/* XXX */
/* Bulk pipe */
struct {
u_int length;
} bulk;
/* Iso pipe */
/* XXX */
} u;
};
Static void ehci_shutdown(void *);
Static void ehci_power(int, void *);
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_idone(struct ehci_xfer *);
Static void ehci_timeout(void *);
Static void ehci_timeout_task(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_pcd_able(ehci_softc_t *, int);
Static void ehci_pcd_enable(void *);
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 **);
Static void ehci_free_sqtd_chain(ehci_softc_t *, ehci_soft_qtd_t *,
ehci_soft_qtd_t *);
Static usbd_status ehci_device_request(usbd_xfer_handle xfer);
Static void ehci_add_qh(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_set_qh_qtd(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);
#ifdef EHCI_DEBUG
Static void ehci_dump_regs(ehci_softc_t *);
Static void ehci_dump(void);
Static ehci_softc_t *theehci;
Static void ehci_dump_link(ehci_link_t, int);
Static void ehci_dump_sqtds(ehci_soft_qtd_t *);
Static void ehci_dump_sqtd(ehci_soft_qtd_t *);
Static void ehci_dump_qtd(ehci_qtd_t *);
Static void ehci_dump_sqh(ehci_soft_qh_t *);
#ifdef DIAGNOSTIC
Static void ehci_dump_exfer(struct ehci_xfer *);
#endif
#endif
#define EHCI_NULL htole32(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_init(ehci_softc_t *sc)
{
u_int32_t version, sparams, cparams, hcr;
u_int i;
usbd_status err;
ehci_soft_qh_t *sqh;
DPRINTF(("ehci_init: start\n"));
#ifdef EHCI_DEBUG
theehci = sc;
#endif
sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
version = EREAD2(sc, EHCI_HCIVERSION);
aprint_normal("%s: EHCI version %x.%x\n", USBDEVNAME(sc->sc_bus.bdev),
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);
if (EHCI_HCS_N_CC(sparams) != sc->sc_ncomp) {
aprint_error("%s: wrong number of companions (%d != %d)\n",
USBDEVNAME(sc->sc_bus.bdev),
EHCI_HCS_N_CC(sparams), sc->sc_ncomp);
#if NOHCI == 0 || NUHCI == 0
aprint_error("%s: ohci or uhci probably not configured\n",
USBDEVNAME(sc->sc_bus.bdev));
#endif
return (USBD_IOERROR);
}
if (sc->sc_ncomp > 0) {
aprint_normal("%s: companion controller%s, %d port%s each:",
USBDEVNAME(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++)
aprint_normal(" %s", USBDEVNAME(sc->sc_comps[i]->bdev));
aprint_normal("\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", USBDEVNAME(sc->sc_bus.bdev)));
EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */
usb_delay_ms(&sc->sc_bus, 1);
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)
break;
}
if (hcr) {
aprint_error("%s: reset timeout\n",
USBDEVNAME(sc->sc_bus.bdev));
return (USBD_IOERROR);
}
/* 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*4; break;
case 1: sc->sc_flsize = 512*4; break;
case 2: sc->sc_flsize = 256*4; break;
case 3: return (USBD_IOERROR);
}
err = usb_allocmem(&sc->sc_bus, sc->sc_flsize,
EHCI_FLALIGN_ALIGN, &sc->sc_fldma);
if (err)
return (err);
DPRINTF(("%s: flsize=%d\n", USBDEVNAME(sc->sc_bus.bdev),sc->sc_flsize));
/* Set up the bus struct. */
sc->sc_bus.methods = &ehci_bus_methods;
sc->sc_bus.pipe_size = sizeof(struct ehci_pipe);
sc->sc_powerhook = powerhook_establish(ehci_power, sc);
sc->sc_shutdownhook = shutdownhook_establish(ehci_shutdown, sc);
sc->sc_eintrs = EHCI_NORMAL_INTRS;
/* 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 =
htole32(EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL);
sqh->qh.qh_link =
htole32(sqh->physaddr | EHCI_LINK_QH);
sqh->qh.qh_curqtd = EHCI_NULL;
sqh->next = NULL;
/* Fill the overlay qTD */
sqh->qh.qh_qtd.qtd_next = EHCI_NULL;
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL;
sqh->qh.qh_qtd.qtd_status = htole32(EHCI_QTD_HALTED);
sqh->sqtd = NULL;
#ifdef EHCI_DEBUG
if (ehcidebug) {
ehci_dump_sqh(sqh);
}
#endif
/* Point to async list */
sc->sc_async_head = sqh;
EOWRITE4(sc, EHCI_ASYNCLISTADDR, sqh->physaddr | EHCI_LINK_QH);
usb_callout_init(sc->sc_tmo_pcd);
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_8 | /* 8 microframes */
(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) {
aprint_error("%s: run timeout\n", USBDEVNAME(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) {
#ifdef DIAGNOSTIC
printf("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_intr: sc == NULL\n");
#endif
return (0);
}
intrs = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS));
if (!intrs)
return (0);
EOWRITE4(sc, EHCI_USBSTS, intrs); /* Acknowledge */
eintrs = intrs & sc->sc_eintrs;
DPRINTFN(7, ("ehci_intr: 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);
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",
USBDEVNAME(sc->sc_bus.bdev));
/* XXX what else */
}
if (eintrs & EHCI_STS_PCD) {
ehci_pcd(sc, sc->sc_intrxfer);
/*
* Disable PCD interrupt for now, because it will be
* on until the port has been reset.
*/
ehci_pcd_able(sc, 0);
/* Do not allow RHSC interrupts > 1 per second */
usb_callout(sc->sc_tmo_pcd, hz, ehci_pcd_enable, sc);
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",
USBDEVNAME(sc->sc_bus.bdev), eintrs);
}
return (1);
}
void
ehci_pcd_able(ehci_softc_t *sc, int on)
{
DPRINTFN(4, ("ehci_pcd_able: on=%d\n", on));
if (on)
sc->sc_eintrs |= EHCI_STS_PCD;
else
sc->sc_eintrs &= ~EHCI_STS_PCD;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
}
void
ehci_pcd_enable(void *v_sc)
{
ehci_softc_t *sc = v_sc;
ehci_pcd_able(sc, 1);
}
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 = KERNADDR(&xfer->dmabuf, 0);
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;
usb_transfer_complete(xfer);
}
void
ehci_softintr(void *v)
{
ehci_softc_t *sc = v;
struct ehci_xfer *ex;
DPRINTFN(10,("%s: ehci_softintr (%d)\n", USBDEVNAME(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 = LIST_NEXT(ex, inext))
ehci_check_intr(sc, ex);
if (sc->sc_softwake) {
sc->sc_softwake = 0;
wakeup(&sc->sc_softwake);
}
sc->sc_bus.intr_context--;
}
/* Check for an interrupt. */
void
ehci_check_intr(ehci_softc_t *sc, struct ehci_xfer *ex)
{
ehci_soft_qtd_t *sqtd, *lsqtd;
u_int32_t status;
DPRINTFN(/*15*/2, ("ehci_check_intr: ex=%p\n", ex));
if (ex->sqtdstart == NULL) {
printf("ehci_check_intr: sqtdstart=NULL\n");
return;
}
lsqtd = ex->sqtdend;
#ifdef DIAGNOSTIC
if (lsqtd == NULL) {
printf("ehci_check_intr: sqtd==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 (le32toh(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 = le32toh(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_SET_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));
usb_uncallout(ex->xfer.timeout_handle, ehci_timeout, ex);
ehci_idone(ex);
}
void
ehci_idone(struct ehci_xfer *ex)
{
usbd_xfer_handle xfer = &ex->xfer;
#ifdef EHCI_DEBUG
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
#endif
ehci_soft_qtd_t *sqtd;
u_int32_t status = 0, nstatus;
int actlen;
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(ex->sqtdstart);
#endif
/* The transfer is done, compute actual length and status. */
actlen = 0;
for (sqtd = ex->sqtdstart; sqtd != NULL; sqtd = sqtd->nextqtd) {
nstatus = le32toh(sqtd->qtd.qtd_status);
if (nstatus & EHCI_QTD_ACTIVE)
break;
status = nstatus;
/* halt is ok if descriptor is last, and complete */
if (sqtd->qtd.qtd_next == EHCI_NULL &&
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);
}
/* If there are left over TDs we need to update the toggle. */
if (sqtd != NULL) {
if (!(xfer->rqflags & URQ_REQUEST))
printf("ehci_idone: need toggle update\n");
#if 0
epipe->nexttoggle = EHCI_TD_GET_DT(le32toh(std->td.td_token));
#endif
}
status &= EHCI_QTD_STATERRS;
DPRINTFN(/*10*/2, ("ehci_idone: len=%d, actlen=%d, status=0x%x\n",
xfer->length, actlen, status));
xfer->actlen = actlen;
if (status != 0) {
#ifdef EHCI_DEBUG
char sbuf[128];
bitmask_snprintf((u_int32_t)status,
"\20\3MISSEDMICRO\4XACT\5BABBLE\6BABBLE"
"\7HALTED",
sbuf, sizeof(sbuf));
DPRINTFN((status == EHCI_QTD_HALTED)*/*10*/2,
("ehci_idone: error, addr=%d, endpt=0x%02x, "
"status 0x%s\n",
xfer->pipe->device->address,
xfer->pipe->endpoint->edesc->bEndpointAddress,
sbuf));
if (ehcidebug > 2) {
ehci_dump_sqh(epipe->sqh);
ehci_dump_sqtds(ex->sqtdstart);
}
#endif
if (status == EHCI_QTD_HALTED)
xfer->status = USBD_STALLED;
else
xfer->status = USBD_IOERROR; /* more info XXX */
} else {
xfer->status = USBD_NORMAL_COMPLETION;
}
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 OHCI_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;
if (sc->sc_child != NULL)
rv = config_detach(sc->sc_child, flags);
if (rv != 0)
return (rv);
usb_uncallout(sc->sc_tmo_pcd, ehci_pcd_enable, sc);
if (sc->sc_powerhook != NULL)
powerhook_disestablish(sc->sc_powerhook);
if (sc->sc_shutdownhook != NULL)
shutdownhook_disestablish(sc->sc_shutdownhook);
usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */
/* XXX free other data structures XXX */
return (rv);
}
int
ehci_activate(device_ptr_t self, enum devact act)
{
struct ehci_softc *sc = (struct ehci_softc *)self;
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
case DVACT_DEACTIVATE:
if (sc->sc_child != NULL)
rv = config_deactivate(sc->sc_child);
sc->sc_dying = 1;
break;
}
return (rv);
}
/*
* Handle suspend/resume.
*
* We need to switch to polling mode here, because this routine is
* called from an intterupt 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 ctl;
int s;
#ifdef EHCI_DEBUG
DPRINTF(("ehci_power: sc=%p, why=%d\n", sc, why));
ehci_dump_regs(sc);
#endif
s = splhardusb();
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
sc->sc_bus.use_polling++;
#if 0
OOO
ctl = OREAD4(sc, EHCI_CONTROL) & ~EHCI_HCFS_MASK;
if (sc->sc_control == 0) {
/*
* Preserve register values, in case that APM BIOS
* does not recover them.
*/
sc->sc_control = ctl;
sc->sc_intre = OREAD4(sc, EHCI_INTERRUPT_ENABLE);
}
ctl |= EHCI_HCFS_SUSPEND;
OWRITE4(sc, EHCI_CONTROL, ctl);
#endif
usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
sc->sc_bus.use_polling--;
break;
case PWR_RESUME:
sc->sc_bus.use_polling++;
#if 0
OOO
/* Some broken BIOSes do not recover these values */
OWRITE4(sc, EHCI_HCCA, DMAADDR(&sc->sc_hccadma, 0));
OWRITE4(sc, EHCI_CONTROL_HEAD_ED, sc->sc_ctrl_head->physaddr);
OWRITE4(sc, EHCI_BULK_HEAD_ED, sc->sc_bulk_head->physaddr);
if (sc->sc_intre)
OWRITE4(sc, EHCI_INTERRUPT_ENABLE,
sc->sc_intre & (EHCI_ALL_INTRS | EHCI_MIE));
if (sc->sc_control)
ctl = sc->sc_control;
else
ctl = OREAD4(sc, EHCI_CONTROL);
ctl |= EHCI_HCFS_RESUME;
OWRITE4(sc, EHCI_CONTROL, ctl);
usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
ctl = (ctl & ~EHCI_HCFS_MASK) | EHCI_HCFS_OPERATIONAL;
OWRITE4(sc, EHCI_CONTROL, ctl);
usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
sc->sc_control = sc->sc_intre = 0;
#endif
sc->sc_bus.use_polling--;
break;
case PWR_SOFTSUSPEND:
case PWR_SOFTSTANDBY:
case PWR_SOFTRESUME:
break;
}
splx(s);
}
/*
* 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"));
EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */
EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET);
}
usbd_status
ehci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
usbd_status err;
err = usb_allocmem(&sc->sc_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)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
usb_freemem(&sc->sc_bus, dma);
}
usbd_xfer_handle
ehci_allocx(struct usbd_bus *bus)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
usbd_xfer_handle xfer;
xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers);
if (xfer != NULL) {
SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
#ifdef DIAGNOSTIC
if (xfer->busy_free != XFER_FREE) {
printf("uhci_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));
#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
SIMPLEQ_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;
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
epipe->sqh->qh.qh_qtd.qtd_status &= htole32(~EHCI_QTD_TOGGLE);
}
Static void
ehci_noop(usbd_pipe_handle pipe)
{
}
#ifdef EHCI_DEBUG
void
ehci_dump_regs(ehci_softc_t *sc)
{
int i;
printf("cmd=0x%08x, sts=0x%08x, ien=0x%08x\n",
EOREAD4(sc, EHCI_USBCMD),
EOREAD4(sc, EHCI_USBSTS),
EOREAD4(sc, EHCI_USBINTR));
printf("frindex=0x%08x ctrdsegm=0x%08x periodic=0x%08x async=0x%08x\n",
EOREAD4(sc, EHCI_FRINDEX),
EOREAD4(sc, EHCI_CTRLDSSEGMENT),
EOREAD4(sc, EHCI_PERIODICLISTBASE),
EOREAD4(sc, EHCI_ASYNCLISTADDR));
for (i = 1; i <= sc->sc_noport; i++)
printf("port %d status=0x%08x\n", i,
EOREAD4(sc, EHCI_PORTSC(i)));
}
/*
* Unused function - this is meant to be called from a kernel
* debugger.
*/
void
ehci_dump()
{
ehci_dump_regs(theehci);
}
void
ehci_dump_link(ehci_link_t link, int type)
{
link = le32toh(link);
printf("0x%08x", link);
if (link & EHCI_LINK_TERMINATE)
printf("<T>");
else {
printf("<");
if (type) {
switch (EHCI_LINK_TYPE(link)) {
case EHCI_LINK_ITD: printf("ITD"); break;
case EHCI_LINK_QH: printf("QH"); break;
case EHCI_LINK_SITD: printf("SITD"); break;
case EHCI_LINK_FSTN: printf("FSTN"); break;
}
}
printf(">");
}
}
void
ehci_dump_sqtds(ehci_soft_qtd_t *sqtd)
{
int i;
u_int32_t stop;
stop = 0;
for (i = 0; sqtd && i < 20 && !stop; sqtd = sqtd->nextqtd, i++) {
ehci_dump_sqtd(sqtd);
stop = sqtd->qtd.qtd_next & EHCI_LINK_TERMINATE;
}
if (sqtd)
printf("dump aborted, too many TDs\n");
}
void
ehci_dump_sqtd(ehci_soft_qtd_t *sqtd)
{
printf("QTD(%p) at 0x%08x:\n", sqtd, sqtd->physaddr);
ehci_dump_qtd(&sqtd->qtd);
}
void
ehci_dump_qtd(ehci_qtd_t *qtd)
{
u_int32_t s;
char sbuf[128];
printf(" next="); ehci_dump_link(qtd->qtd_next, 0);
printf(" altnext="); ehci_dump_link(qtd->qtd_altnext, 0);
printf("\n");
s = le32toh(qtd->qtd_status);
bitmask_snprintf(EHCI_QTD_GET_STATUS(s),
"\20\10ACTIVE\7HALTED\6BUFERR\5BABBLE\4XACTERR"
"\3MISSED\2SPLIT\1PING", sbuf, sizeof(sbuf));
printf(" status=0x%08x: toggle=%d bytes=0x%x ioc=%d c_page=0x%x\n",
s, EHCI_QTD_GET_TOGGLE(s), EHCI_QTD_GET_BYTES(s),
EHCI_QTD_GET_IOC(s), EHCI_QTD_GET_C_PAGE(s));
printf(" cerr=%d pid=%d stat=0x%s\n", EHCI_QTD_GET_CERR(s),
EHCI_QTD_GET_PID(s), sbuf);
for (s = 0; s < 5; s++)
printf(" buffer[%d]=0x%08x\n", s, le32toh(qtd->qtd_buffer[s]));
}
void
ehci_dump_sqh(ehci_soft_qh_t *sqh)
{
ehci_qh_t *qh = &sqh->qh;
u_int32_t endp, endphub;
printf("QH(%p) at 0x%08x:\n", sqh, sqh->physaddr);
printf(" link="); ehci_dump_link(qh->qh_link, 1); printf("\n");
endp = le32toh(qh->qh_endp);
printf(" endp=0x%08x\n", endp);
printf(" addr=0x%02x inact=%d endpt=%d eps=%d dtc=%d hrecl=%d\n",
EHCI_QH_GET_ADDR(endp), EHCI_QH_GET_INACT(endp),
EHCI_QH_GET_ENDPT(endp), EHCI_QH_GET_EPS(endp),
EHCI_QH_GET_DTC(endp), EHCI_QH_GET_HRECL(endp));
printf(" mpl=0x%x ctl=%d nrl=%d\n",
EHCI_QH_GET_MPL(endp), EHCI_QH_GET_CTL(endp),
EHCI_QH_GET_NRL(endp));
endphub = le32toh(qh->qh_endphub);
printf(" endphub=0x%08x\n", endphub);
printf(" smask=0x%02x cmask=0x%02x huba=0x%02x port=%d mult=%d\n",
EHCI_QH_GET_SMASK(endphub), EHCI_QH_GET_CMASK(endphub),
EHCI_QH_GET_HUBA(endphub), EHCI_QH_GET_PORT(endphub),
EHCI_QH_GET_MULT(endphub));
printf(" curqtd="); ehci_dump_link(qh->qh_curqtd, 0); printf("\n");
printf("Overlay qTD:\n");
ehci_dump_qtd(&qh->qh_qtd);
}
#ifdef DIAGNOSTIC
Static void
ehci_dump_exfer(struct ehci_xfer *ex)
{
printf("ehci_dump_exfer: ex=%p\n", ex);
}
#endif
#endif
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 speed, naks;
DPRINTFN(1, ("ehci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
pipe, addr, ed->bEndpointAddress, sc->sc_addr));
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:
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);
}
naks = 8; /* XXX */
sqh = ehci_alloc_sqh(sc);
if (sqh == NULL)
goto bad0;
/* qh_link filled when the QH is added */
sqh->qh.qh_endp = htole32(
EHCI_QH_SET_ADDR(addr) |
EHCI_QH_SET_ENDPT(ed->bEndpointAddress) |
EHCI_QH_SET_EPS(speed) | /* XXX */
/* XXX EHCI_QH_DTC ? */
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 = htole32(
EHCI_QH_SET_MULT(1)
/* XXX TT stuff */
/* XXX interrupt mask */
);
sqh->qh.qh_curqtd = EHCI_NULL;
/* Fill the overlay qTD */
sqh->qh.qh_qtd.qtd_next = EHCI_NULL;
sqh->qh.qh_qtd.qtd_altnext = EHCI_NULL;
sqh->qh.qh_qtd.qtd_status = htole32(0);
epipe->sqh = sqh;
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(sqh, sc->sc_async_head);
splx(s);
break;
case UE_BULK:
pipe->methods = &ehci_device_bulk_methods;
s = splusb();
ehci_add_qh(sqh, sc->sc_async_head);
splx(s);
break;
case UE_INTERRUPT:
pipe->methods = &ehci_device_intr_methods;
return (USBD_INVAL);
case UE_ISOCHRONOUS:
pipe->methods = &ehci_device_isoc_methods;
return (USBD_INVAL);
default:
return (USBD_INVAL);
}
return (USBD_NORMAL_COMPLETION);
bad1:
ehci_free_sqh(sc, sqh);
bad0:
return (USBD_NOMEM);
}
/*
* Add an ED to the schedule. Called at splusb().
*/
void
ehci_add_qh(ehci_soft_qh_t *sqh, ehci_soft_qh_t *head)
{
SPLUSBCHECK;
sqh->next = head->next;
sqh->qh.qh_link = head->qh.qh_link;
head->next = sqh;
head->qh.qh_link = htole32(sqh->physaddr | EHCI_LINK_QH);
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
printf("ehci_add_qh:\n");
ehci_dump_sqh(sqh);
}
#endif
}
/*
* Remove an ED from the schedule. Called at splusb().
*/
void
ehci_rem_qh(ehci_softc_t *sc, ehci_soft_qh_t *sqh, ehci_soft_qh_t *head)
{
ehci_soft_qh_t *p;
SPLUSBCHECK;
/* XXX */
for (p = head; p != NULL && p->next != sqh; p = p->next)
;
if (p == NULL)
panic("ehci_rem_qh: ED not found");
p->next = sqh->next;
p->qh.qh_link = sqh->qh.qh_link;
ehci_sync_hc(sc);
}
void
ehci_set_qh_qtd(ehci_soft_qh_t *sqh, ehci_soft_qtd_t *sqtd)
{
/* Halt while we are messing. */
sqh->qh.qh_qtd.qtd_status |= htole32(EHCI_QTD_HALTED);
sqh->qh.qh_curqtd = 0;
sqh->qh.qh_qtd.qtd_next = htole32(sqtd->physaddr);
sqh->sqtd = sqtd;
/* Keep toggle, clear the rest, including length. */
sqh->qh.qh_qtd.qtd_status &= htole32(EHCI_QTD_TOGGLE);
}
/*
* 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"));
lockmgr(&sc->sc_doorbell_lock, LK_EXCLUSIVE, NULL); /* get doorbell */
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);
lockmgr(&sc->sc_doorbell_lock, LK_RELEASE, NULL); /* release doorbell */
#ifdef DIAGNOSTIC
if (error)
printf("ehci_sync_hc: tsleep() = %d\n", error);
#endif
DPRINTFN(2,("ehci_sync_hc: exit\n"));
}
/***********/
/*
* 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(p, l, s)
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(SIMPLEQ_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_control 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 = KERNADDR(&xfer->dmabuf, 0);
#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_control 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 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_control: 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_transfer: clear port test "
"%d\n", index));
break;
case UHF_PORT_INDICATOR:
DPRINTFN(2,("ehci_root_ctrl_transfer: 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;
}
#if 0
switch(value) {
case UHF_C_PORT_CONNECTION:
case UHF_C_PORT_ENABLE:
case UHF_C_PORT_SUSPEND:
case UHF_C_PORT_OVER_CURRENT:
case UHF_C_PORT_RESET:
/* Enable RHSC interrupt if condition is cleared. */
if ((OREAD4(sc, port) >> 16) == 0)
ehci_pcd_able(sc, 1);
break;
default:
break;
}
#endif
break;
case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
if (value != 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_INCICATOR(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_transfer: 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_transfer: port status=0x%04x\n",
v));
i = UPS_HIGH_SPEED;
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_transfer: reset port %d\n",
index));
if (EHCI_PS_IS_LOWSPEED(v)) {
/* 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. */
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",
USBDEVNAME(sc->sc_bus.bdev));
return (USBD_TIMEOUT);
}
if (!(v & EHCI_PS_PE)) {
/* 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_transfer: set port power "
"%d\n", index));
EOWRITE4(sc, port, v | EHCI_PS_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(2,("ehci_root_ctrl_transfer: set port test "
"%d\n", index));
break;
case UHF_PORT_INDICATOR:
DPRINTFN(2,("ehci_root_ctrl_transfer: 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();
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",
USBDEVNAME(sc->sc_bus.bdev));
else
printf("%s: handing over %s speed device on "
"port %d to %s\n",
USBDEVNAME(sc->sc_bus.bdev),
lowspeed ? "low" : "full",
index, USBDEVNAME(sc->sc_comps[i]->bdev));
} else {
printf("%s: npcomp == 0\n", USBDEVNAME(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)
{
xfer->hcpriv = NULL;
}
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(SIMPLEQ_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)
{
xfer->hcpriv = NULL;
}
/************************/
ehci_soft_qh_t *
ehci_alloc_sqh(ehci_softc_t *sc)
{
ehci_soft_qh_t *sqh;
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;
}
}
sqh = sc->sc_freeqhs;
sc->sc_freeqhs = sqh->next;
memset(&sqh->qh, 0, sizeof(ehci_qh_t));
sqh->next = NULL;
return (sqh);
}
void
ehci_free_sqh(ehci_softc_t *sc, ehci_soft_qh_t *sqh)
{
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;
memset(&sqtd->qtd, 0, sizeof(ehci_qtd_t));
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 **sp, ehci_soft_qtd_t **ep)
{
ehci_soft_qtd_t *next, *cur;
ehci_physaddr_t dataphys, dataphyspage, dataphyslastpage, nextphys;
u_int32_t qtdstatus;
int len, curlen;
int i;
usb_dma_t *dma = &xfer->dmabuf;
DPRINTFN(alen<4*4096,("ehci_alloc_sqtd_chain: start len=%d\n", alen));
len = alen;
dataphys = DMAADDR(dma, 0);
dataphyslastpage = EHCI_PAGE(dataphys + len - 1);
qtdstatus = htole32(
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 */
/* XXX Data toggle */
);
cur = ehci_alloc_sqtd(sc);
*sp = cur;
if (cur == NULL)
goto nomem;
for (;;) {
dataphyspage = EHCI_PAGE(dataphys);
/* The EHCI hardware can handle at most 5 pages. */
if (dataphyslastpage - dataphyspage <
EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE) {
/* we can handle it in this QTD */
curlen = len;
} else {
/* must use multiple TDs, fill as much as possible. */
curlen = EHCI_QTD_NBUFFERS * EHCI_PAGE_SIZE -
EHCI_PAGE_OFFSET(dataphys);
#ifdef DIAGNOSTIC
if (curlen > len) {
printf("ehci_alloc_sqtd_chain: curlen=0x%x "
"len=0x%x offs=0x%x\n", curlen, len,
EHCI_PAGE_OFFSET(dataphys));
printf("lastpage=0x%x page=0x%x phys=0x%x\n",
dataphyslastpage, dataphyspage,
dataphys);
curlen = len;
}
#endif
/* XXX true for EHCI? */
/* the length must be a multiple of the max size */
curlen -= curlen % UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize);
DPRINTFN(1,("ehci_alloc_sqtd_chain: multiple QTDs, "
"curlen=%d\n", curlen));
#ifdef DIAGNOSTIC
if (curlen == 0)
panic("ehci_alloc_std: curlen == 0");
#endif
}
DPRINTFN(4,("ehci_alloc_sqtd_chain: dataphys=0x%08x "
"dataphyslastpage=0x%08x len=%d curlen=%d\n",
dataphys, dataphyslastpage,
len, curlen));
len -= curlen;
if (len != 0) {
next = ehci_alloc_sqtd(sc);
if (next == NULL)
goto nomem;
nextphys = next->physaddr;
} else {
next = NULL;
nextphys = EHCI_NULL;
}
for (i = 0; i * EHCI_PAGE_SIZE < curlen; i++) {
ehci_physaddr_t a = dataphys + i * EHCI_PAGE_SIZE;
if (i != 0) /* use offset only in first buffer */
a = EHCI_PAGE(a);
cur->qtd.qtd_buffer[i] = htole32(a);
cur->qtd.qtd_buffer_hi[i] = 0;
#ifdef DIAGNOSTIC
if (i >= EHCI_QTD_NBUFFERS) {
printf("ehci_alloc_sqtd_chain: i=%d\n", i);
goto nomem;
}
#endif
}
cur->nextqtd = next;
cur->qtd.qtd_next = cur->qtd.qtd_altnext = htole32(nextphys);
cur->qtd.qtd_status =
qtdstatus | htole32(EHCI_QTD_SET_BYTES(curlen));
cur->xfer = xfer;
cur->len = curlen;
DPRINTFN(10,("ehci_alloc_sqtd_chain: cbp=0x%08x end=0x%08x\n",
dataphys, dataphys + curlen));
if (len == 0)
break;
DPRINTFN(10,("ehci_alloc_sqtd_chain: extend chain\n"));
dataphys += curlen;
cur = next;
}
cur->qtd.qtd_status |= htole32(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);
}
Static void
ehci_free_sqtd_chain(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd,
ehci_soft_qtd_t *sqtdend)
{
ehci_soft_qtd_t *p;
int i;
DPRINTFN(10,("ehci_free_sqtd_chain: sqtd=%p sqtdend=%p\n",
sqtd, sqtdend));
for (i = 0; sqtd != sqtdend; sqtd = p, i++) {
p = sqtd->nextqtd;
ehci_free_sqtd(sc, sqtd);
}
}
/****************/
/*
* 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);
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.
* XXX This is most probably wrong.
*/
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;
ehci_physaddr_t cur;
u_int32_t qhstatus;
int s;
int hit;
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 */
usb_uncallout(xfer->timeout_handle, ehci_timeout, xfer);
usb_transfer_complete(xfer);
splx(s);
return;
}
if (xfer->device->bus->intr_context || !curproc)
panic("ehci_abort_xfer: not in process context");
/*
* Step 1: Make interrupt routine and hardware ignore xfer.
*/
s = splusb();
xfer->status = status; /* make software ignore it */
usb_uncallout(xfer->timeout_handle, ehci_timeout, xfer);
qhstatus = sqh->qh.qh_qtd.qtd_status;
sqh->qh.qh_qtd.qtd_status = qhstatus | htole32(EHCI_QTD_HALTED);
for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) {
sqtd->qtd.qtd_status |= htole32(EHCI_QTD_HALTED);
if (sqtd == exfer->sqtdend)
break;
}
splx(s);
/*
* Step 2: Wait until we know hardware has finished any possible
* use of the xfer. Also make sure the soft interrupt routine
* has run.
*/
ehci_sync_hc(sc);
s = splusb();
sc->sc_softwake = 1;
usb_schedsoftintr(&sc->sc_bus);
tsleep(&sc->sc_softwake, PZERO, "ehciab", 0);
splx(s);
/*
* Step 3: Remove any vestiges of the xfer from the hardware.
* The complication here is that the hardware may have executed
* 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.
*/
s = splusb(); /* XXX why? */
cur = EHCI_LINK_ADDR(le32toh(sqh->qh.qh_curqtd));
hit = 0;
for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) {
hit |= cur == sqtd->physaddr;
if (sqtd == exfer->sqtdend)
break;
}
sqtd = sqtd->nextqtd;
/* Zap curqtd register if hardware pointed inside the xfer. */
if (hit && sqtd != NULL) {
DPRINTFN(1,("ehci_abort_xfer: cur=0x%08x\n", sqtd->physaddr));
sqh->qh.qh_curqtd = htole32(sqtd->physaddr); /* unlink qTDs */
sqh->qh.qh_qtd.qtd_status = qhstatus;
} else {
DPRINTFN(1,("ehci_abort_xfer: no hit\n"));
}
/*
* Step 4: Execute callback.
*/
#ifdef DIAGNOSTIC
exfer->isdone = 1;
#endif
usb_transfer_complete(xfer);
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_init_task(&exfer->abort_task, ehci_timeout_task, addr);
usb_add_task(exfer->xfer.pipe->device, &exfer->abort_task);
}
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);
}
/************************/
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(SIMPLEQ_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, ex->sqtdstart, NULL);
}
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;
int addr = dev->address;
ehci_soft_qtd_t *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_control 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, addr,
epipe->pipe.endpoint->edesc->bEndpointAddress));
setup = ehci_alloc_sqtd(sc);
if (setup == NULL) {
err = USBD_NOMEM;
goto bad1;
}
stat = ehci_alloc_sqtd(sc);
if (stat == NULL) {
err = USBD_NOMEM;
goto bad2;
}
sqh = epipe->sqh;
epipe->u.ctl.length = len;
/* XXX
* Since we're messing with the QH we must know the HC is in sync.
* This needs to go away since it slows down control transfers.
* Removing it entails:
* - fill the QH only once with addr & wMaxPacketSize
* - put the correct data toggles in the qtds and set DTC
*/
/* ehci_sync_hc(sc); */
/* Update device address and length since they may have changed. */
/* XXX This only needs to be done once, but it's too early in open. */
/* XXXX Should not touch ED here! */
sqh->qh.qh_endp =
(sqh->qh.qh_endp & htole32(~(EHCI_QH_ADDRMASK | EHCI_QG_MPLMASK))) |
htole32(
EHCI_QH_SET_ADDR(addr) |
/* EHCI_QH_DTC | */
EHCI_QH_SET_MPL(UGETW(epipe->pipe.endpoint->edesc->wMaxPacketSize))
);
/* Clear toggle */
sqh->qh.qh_qtd.qtd_status &= htole32(~EHCI_QTD_TOGGLE);
/* Set up data transaction */
if (len != 0) {
ehci_soft_qtd_t *end;
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer,
&next, &end);
if (err)
goto bad3;
end->nextqtd = stat;
end->qtd.qtd_next =
end->qtd.qtd_altnext = htole32(stat->physaddr);
/* Start toggle at 1. */
/*next->qtd.td_flags |= htole32(EHCI_QTD_TOGGLE);*/
} else {
next = stat;
}
memcpy(KERNADDR(&epipe->u.ctl.reqdma, 0), req, sizeof *req);
setup->qtd.qtd_status = htole32(
EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) |
EHCI_QTD_SET_CERR(3) |
EHCI_QTD_SET_BYTES(sizeof *req)
);
setup->qtd.qtd_buffer[0] = htole32(DMAADDR(&epipe->u.ctl.reqdma, 0));
setup->qtd.qtd_buffer_hi[0] = 0;
setup->nextqtd = next;
setup->qtd.qtd_next = setup->qtd.qtd_altnext = htole32(next->physaddr);
setup->xfer = xfer;
setup->len = sizeof *req;
stat->qtd.qtd_status = htole32(
EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(isread ? EHCI_QTD_PID_OUT : EHCI_QTD_PID_IN) |
EHCI_QTD_SET_CERR(3) |
EHCI_QTD_IOC
);
stat->qtd.qtd_buffer[0] = 0; /* XXX not needed? */
stat->qtd.qtd_buffer_hi[0] = 0; /* XXX not needed? */
stat->nextqtd = NULL;
stat->qtd.qtd_next = stat->qtd.qtd_altnext = EHCI_NULL;
stat->xfer = xfer;
stat->len = 0;
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
DPRINTF(("ehci_device_request:\n"));
ehci_dump_sqh(sqh);
ehci_dump_sqtds(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
/* Insert qTD in QH list. */
s = splusb();
ehci_set_qh_qtd(sqh, setup);
if (xfer->timeout && !sc->sc_bus.use_polling) {
usb_callout(xfer->timeout_handle, mstohz(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_async_head);
ehci_dump_sqh(sqh);
ehci_dump_sqtds(setup);
}
#endif
return (USBD_NORMAL_COMPLETION);
bad3:
ehci_free_sqtd(sc, stat);
bad2:
ehci_free_sqtd(sc, setup);
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(SIMPLEQ_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;
ehci_soft_qh_t *sqh;
usbd_status err;
int len, isread, endpt;
int s;
DPRINTFN(2, ("ehci_device_bulk_transfer: 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_transfer: 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;
err = ehci_alloc_sqtd_chain(epipe, sc, len, isread, xfer, &data,
&dataend);
if (err) {
DPRINTFN(-1,("ehci_device_bulk_transfer: no memory\n"));
xfer->status = err;
usb_transfer_complete(xfer);
return (err);
}
#ifdef EHCI_DEBUG
if (ehcidebug > 5) {
DPRINTF(("ehci_device_bulk_transfer: data(1)\n"));
ehci_dump_sqh(sqh);
ehci_dump_sqtds(data);
}
#endif
/* Set up interrupt info. */
exfer->sqtdstart = data;
exfer->sqtdend = dataend;
#ifdef DIAGNOSTIC
if (!exfer->isdone) {
printf("ehci_device_bulk_transfer: not done, ex=%p\n", exfer);
}
exfer->isdone = 0;
#endif
s = splusb();
ehci_set_qh_qtd(sqh, data);
if (xfer->timeout && !sc->sc_bus.use_polling) {
usb_callout(xfer->timeout_handle, mstohz(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_transfer: data(2)\n"));
delay(10000);
DPRINTF(("ehci_device_bulk_transfer: 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(sqh);
ehci_dump_sqtds(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, ex->sqtdstart, NULL);
}
DPRINTFN(5, ("ehci_bulk_done: length=%d\n", xfer->actlen));
}
/************************/
Static usbd_status ehci_device_intr_transfer(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static usbd_status ehci_device_intr_start(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static void ehci_device_intr_abort(usbd_xfer_handle xfer) { }
Static void ehci_device_intr_close(usbd_pipe_handle pipe) { }
Static void ehci_device_intr_done(usbd_xfer_handle xfer) { }
/************************/
Static usbd_status ehci_device_isoc_transfer(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static usbd_status ehci_device_isoc_start(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static void ehci_device_isoc_abort(usbd_xfer_handle xfer) { }
Static void ehci_device_isoc_close(usbd_pipe_handle pipe) { }
Static void ehci_device_isoc_done(usbd_xfer_handle xfer) { }
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