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NetBSD/sys/dev/usb/ehci.c

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/* $NetBSD: ehci.c,v 1.10 2001/11/19 02:57:16 augustss Exp $ */
/*
* 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 0.96 spec can be found at
* http://developer.intel.com/technology/usb/download/ehci-r096.pdf
* and the USB 2.0 spec at
* http://www.usb.org/developers/data/usb_20.zip
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.10 2001/11/19 02:57:16 augustss Exp $");
#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;
#define bitmask_snprintf(q,f,b,l) snprintf((b), (l), "%b", (q), (f))
#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 */
/* Bulk pipe */
struct {
u_int length;
int isread;
} bulk;
/* Iso pipe */
} 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 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 void ehci_hash_add_qtd(ehci_softc_t *, ehci_soft_qtd_t *);
Static void ehci_hash_rem_qtd(ehci_softc_t *, ehci_soft_qtd_t *);
Static ehci_soft_qtd_t *ehci_hash_find_qtd(ehci_softc_t *, ehci_physaddr_t);
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_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_dumpregs(ehci_softc_t *);
Static void ehci_dump(void);
Static ehci_softc_t *theehci;
Static void ehci_dump_link(ehci_link_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 *);
#endif
#define EHCI_INTR_ENDPT 1
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;
DPRINTF(("ehci_init: start\n"));
#ifdef EHCI_DEBUG
theehci = sc;
#endif
sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
version = EREAD2(sc, EHCI_HCIVERSION);
printf("%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) {
printf("%s: wrong number of companions (%d != %d)\n",
USBDEVNAME(sc->sc_bus.bdev),
EHCI_HCS_N_CC(sparams), sc->sc_ncomp);
return (USBD_IOERROR);
}
if (sc->sc_ncomp > 0) {
printf("%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++)
printf(" %s", USBDEVNAME(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));
sc->sc_bus.usbrev = USBREV_2_0;
for (i = 0; i < EHCI_HASH_SIZE; i++)
LIST_INIT(&sc->sc_hash_qtds[i]);
/* 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++) {
delay(10);
hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET;
if (!hcr)
break;
}
if (hcr) {
printf("%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 bulk list. */
sc->sc_bulk_head = ehci_alloc_sqh(sc);
if (sc->sc_bulk_head == NULL) {
err = USBD_NOMEM;
goto bad1;
}
memset(&sc->sc_bulk_head->qh, 0, sizeof(ehci_qtd_t));
sc->sc_bulk_head->qh.qh_curqtd = htole32(EHCI_LINK_TERMINATE);
sc->sc_bulk_head->qh.qh_qtd.qtd_status =
htole32(EHCI_QTD_SET_STATUS(EHCI_QTD_HALTED));
sc->sc_bulk_head->qh.qh_link =
htole32(EHCI_LINK_TERMINATE); /* XXX no bw reclaimation */
sc->sc_bulk_head->next = NULL;
#ifdef EHCI_DEBUG
if (ehcidebug) {
ehci_dump_sqh(sc->sc_bulk_head);
}
#endif
/* Allocate dummy QH that starts the control list. */
sc->sc_ctrl_head = ehci_alloc_sqh(sc);
if (sc->sc_ctrl_head == NULL) {
err = USBD_NOMEM;
goto bad2;
}
memset(&sc->sc_ctrl_head->qh, 0, sizeof(ehci_qtd_t));
sc->sc_ctrl_head->qh.qh_curqtd = htole32(EHCI_LINK_TERMINATE);
sc->sc_ctrl_head->qh.qh_qtd.qtd_status =
htole32(EHCI_QTD_SET_STATUS(EHCI_QTD_HALTED));
sc->sc_ctrl_head->qh.qh_endp = htole32(EHCI_QH_HRECL);
sc->sc_ctrl_head->qh.qh_link =
htole32(sc->sc_bulk_head->physaddr | EHCI_LINK_QH);
sc->sc_ctrl_head = sc->sc_bulk_head;
#ifdef EHCI_DEBUG
if (ehcidebug) {
ehci_dump_sqh(sc->sc_ctrl_head);
}
#endif
/* Point to async list */
EOWRITE4(sc, EHCI_ASYNCLISTADDR,
sc->sc_ctrl_head->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++) {
delay(10);
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (!hcr)
break;
}
if (hcr) {
printf("%s: run timeout\n", USBDEVNAME(sc->sc_bus.bdev));
return (USBD_IOERROR);
}
return (USBD_NORMAL_COMPLETION);
#if 0
bad3:
ehci_free_sqh(sc, sc->sc_bulk_head);
#endif
bad2:
ehci_free_sqh(sc, sc->sc_ctrl_head);
bad1:
usb_freemem(&sc->sc_bus, &sc->sc_fldma);
return (err);
}
Static int ehci_intr1(ehci_softc_t *);
int
ehci_intr(void *v)
{
ehci_softc_t *sc = v;
/* 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_bulk_head);
eintrs &= ~EHCI_STS_INT;
}
if (eintrs & EHCI_STS_INT) {
DPRINTF(("ehci_intr1: something is done\n"));
eintrs &= ~EHCI_STS_INT;
}
if (eintrs & EHCI_STS_ERRINT) {
DPRINTF(("ehci_intr1: some error\n"));
eintrs &= ~EHCI_STS_HSE;
}
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;
struct ehci_pipe *opipe;
u_char *p;
int i, m;
if (xfer == NULL) {
/* Just ignore the change. */
return;
}
pipe = xfer->pipe;
opipe = (struct ehci_pipe *)pipe;
p = KERNADDR(&xfer->dmabuf);
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;
}
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);
/* 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);
break;
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_dumpregs(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));
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;
return (usb_allocmem(&sc->sc_bus, size, 0, dma));
}
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, xfer, next);
else
xfer = malloc(sizeof(*xfer), M_USB, M_NOWAIT);
if (xfer != NULL)
memset(xfer, 0, sizeof *xfer);
return (xfer);
}
void
ehci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
{
struct ehci_softc *sc = (struct ehci_softc *)bus;
SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
}
Static void
ehci_device_clear_toggle(usbd_pipe_handle pipe)
{
#if 0
OOO
struct ehci_pipe *epipe = (struct ehci_pipe *)pipe;
epipe->sed->ed.ed_headp &= htole32(~EHCI_TOGGLECARRY);
#endif
}
Static void
ehci_noop(usbd_pipe_handle pipe)
{
}
#ifdef EHCI_DEBUG
void
ehci_dumpregs(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));
for (i = 1; i <= sc->sc_noport; i++)
printf("port %d status=0x%08x\n", i,
EOREAD4(sc, EHCI_PORTSC(i)));
}
void
ehci_dump()
{
ehci_dumpregs(theehci);
}
void
ehci_dump_link(ehci_link_t link)
{
printf("0x%08x<", link);
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;
}
if (link & EHCI_LINK_TERMINATE)
printf(",T>");
else
printf(">");
}
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;
printf(" next="); ehci_dump_link(qtd->qtd_next);
printf("altnext="); ehci_dump_link(qtd->qtd_altnext);
printf("\n");
s = qtd->qtd_status;
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%02x\n", EHCI_QTD_GET_CERR(s),
EHCI_QTD_GET_PID(s), EHCI_QTD_GET_STATUS(s));
for (s = 0; s < 5; s++)
printf(" buffer[%d]=0x%08x\n", s, qtd->qtd_buffer[s]);
}
void
ehci_dump_sqh(ehci_soft_qh_t *sqh)
{
ehci_qh_t *qh = &sqh->qh;
printf("QH(%p) at 0x%08x:\n", sqh, sqh->physaddr);
printf(" link="); ehci_dump_link(qh->qh_link); printf("\n");
printf(" endp=0x%08x endphub=0x%08x\n", qh->qh_endp, qh->qh_endphub);
printf(" curqtd="); ehci_dump_link(qh->qh_curqtd); printf("\n ");
ehci_dump_qtd(&qh->qh_qtd);
}
#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;
ehci_soft_qtd_t *sqtd;
usbd_status err;
#if 0
ehci_soft_itd_t *sitd;
ehci_physaddr_t tdphys;
u_int32_t fmt;
int ival;
#endif
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 (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);
}
speed = EHCI_QH_SPEED_HIGH; /* XXX */
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)
);
sqh->qh.qh_curqtd = htole32(EHCI_LINK_TERMINATE);
epipe->sqh = sqh;
#if 0
if (xfertype == UE_CONTROL || xfertype == UE_BULK) {
sqtd = ehci_alloc_sqtd(sc);
if (sqtd == NULL) {
ehci_free_sqtd(sc, sqtd);
goto bad1;
}
epipe->tail.qtd = sqtd;
tdphys = sqtd->physaddr;
} else
sqtd = NULL;
#endif
switch (xfertype) {
case UE_CONTROL:
pipe->methods = &ehci_device_ctrl_methods;
err = usb_allocmem(&sc->sc_bus,
sizeof(usb_device_request_t),
0, &epipe->u.ctl.reqdma);
if (err)
goto bad;
s = splusb();
ehci_add_qh(sqh, sc->sc_ctrl_head);
splx(s);
break;
case UE_BULK:
pipe->methods = &ehci_device_bulk_methods;
s = splusb();
ehci_add_qh(sqh, sc->sc_bulk_head);
splx(s);
break;
default:
return (USBD_INVAL);
}
return (USBD_NORMAL_COMPLETION);
bad:
if (sqtd != NULL)
ehci_free_sqtd(sc, sqtd);
/*bad1:*/
if (sqh != NULL)
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);
#ifdef EHCI_DEBUG
if (ehcidebug > 0) {
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;
int s;
SPLUSBCHECK;
/* XXX */
for (p = head; p == NULL && p->next != sqh; p = p->next)
;
if (p == NULL)
panic("ehci_rem_qh: ED not found\n");
p->next = sqh->next;
p->qh.qh_link = sqh->qh.qh_link;
/*
* Now we must 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 ofthe doorbell.
*/
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);
tsleep(&sc->sc_bulk_head, PZERO, "ehcidi", 0); /* wait for doorbell */
splx(s);
lockmgr(&sc->sc_doorbell_lock, LK_RELEASE, NULL); /* release doorbell */
}
/***********/
/*
* 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 */
0, /* protocol */
64, /* max packet */
{0},{0},{0x00,0x01}, /* device id */
1,2,0, /* string indicies */
1 /* # of configurations */
};
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,
0,
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);
#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;
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);
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_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);
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 = 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_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_RESET_DELAY * 2);
/* Terminate reset sequence. */
EOWRITE4(sc, port, v);
/* Wait for HC to complete reset. */
usb_delay_ms(&sc->sc_bus, EHCI_PORT_RESET_COMPLETE * 2);
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;
default:
err = USBD_IOERROR;
goto ret;
}
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 i, port;
u_int32_t v;
DPRINTF(("ehci_disown: index=%d lowspeed=%d\n", index, lowspeed));
#ifdef DIAGNOSTIC
if (sc->sc_npcomp != 0) {
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);
if (err)
return (0);
for(i = 0; i < EHCI_SQH_CHUNK; i++) {
offs = i * EHCI_SQH_SIZE;
sqh = (ehci_soft_qh_t *)((char *)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 = 0;
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);
if (err)
return (NULL);
s = splusb();
for(i = 0; i < EHCI_SQTD_CHUNK; i++) {
offs = i * EHCI_SQTD_SIZE;
sqtd = (ehci_soft_qtd_t *)((char *)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;
ehci_hash_add_qtd(sc, sqtd);
splx(s);
return (sqtd);
}
void
ehci_free_sqtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd)
{
int s;
s = splusb();
ehci_hash_rem_qtd(sc, sqtd);
sqtd->nextqtd = sc->sc_freeqtds;
sc->sc_freeqtds = sqtd;
splx(s);
}
/*
* When a transfer is completed the TD is added to the done queue by
* the host controller. This queue is the processed by software.
* Unfortunately the queue contains the physical address of the TD
* and we have no simple way to translate this back to a kernel address.
* To make the translation possible (and fast) we use a hash table of
* TDs currently in the schedule. The physical address is used as the
* hash value.
*/
#define HASH(a) (((a) >> 4) % EHCI_HASH_SIZE)
/* Called at splusb() */
void
ehci_hash_add_qtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd)
{
int h = HASH(sqtd->physaddr);
SPLUSBCHECK;
LIST_INSERT_HEAD(&sc->sc_hash_qtds[h], sqtd, hnext);
}
/* Called at splusb() */
void
ehci_hash_rem_qtd(ehci_softc_t *sc, ehci_soft_qtd_t *sqtd)
{
SPLUSBCHECK;
LIST_REMOVE(sqtd, hnext);
}
ehci_soft_qtd_t *
ehci_hash_find_qtd(ehci_softc_t *sc, ehci_physaddr_t a)
{
int h = HASH(a);
ehci_soft_qtd_t *sqtd;
for (sqtd = LIST_FIRST(&sc->sc_hash_qtds[h]);
sqtd != NULL;
sqtd = LIST_NEXT(sqtd, hnext))
if (sqtd->physaddr == a)
return (sqtd);
return (NULL);
}
/*
* 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.
*/
void
ehci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
{
struct ehci_pipe *epipe = (struct ehci_pipe *)xfer->pipe;
ehci_soft_qh_t *sqh = epipe->sqh;
#if 0
ehci_softc_t *sc = (ehci_softc_t *)epipe->pipe.device->bus;
ehci_soft_td_t *p, *n;
ehci_physaddr_t headp;
int s, hit;
#endif
DPRINTF(("ehci_abort_xfer: xfer=%p pipe=%p sqh=%p\n", xfer, epipe,sqh));
if (xfer->device->bus->intr_context || !curproc)
panic("ehci_abort_xfer: not in process context\n");
}
/************************/
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) { return USBD_IOERROR; }
void
ehci_device_ctrl_done(usbd_xfer_handle xfer)
{
DPRINTFN(10,("ehci_ctrl_done: xfer=%p\n", xfer));
#ifdef DIAGNOSTIC
if (!(xfer->rqflags & URQ_REQUEST)) {
panic("ehci_ctrl_done: not a request\n");
}
#endif
xfer->hcpriv = NULL;
}
/* 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_ctrl_head);
/*ehci_free_std(sc, epipe->tail.td);*/
}
/************************/
Static usbd_status ehci_device_bulk_transfer(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static usbd_status ehci_device_bulk_start(usbd_xfer_handle xfer) { return USBD_IOERROR; }
Static void ehci_device_bulk_abort(usbd_xfer_handle xfer) { }
Static void ehci_device_bulk_close(usbd_pipe_handle pipe) { }
Static void ehci_device_bulk_done(usbd_xfer_handle xfer) { }
/************************/
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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