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freebsd-dev/sys/dev/usb/controller/ehci.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/* $FreeBSD$ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
* Copyright (c) 2004 The NetBSD Foundation, Inc. All rights reserved.
* Copyright (c) 2004 Lennart Augustsson. All rights reserved.
* Copyright (c) 2004 Charles M. Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* USB 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
* The EHCI 1.0 spec can be found at
* http://developer.intel.com/technology/usb/download/ehci-r10.pdf
* and the USB 2.0 spec at
* http://www.usb.org/developers/docs/usb_20.zip
*
*/
/*
* TODO:
* 1) command failures are not recovered correctly
*/
#ifdef USB_GLOBAL_INCLUDE_FILE
#include USB_GLOBAL_INCLUDE_FILE
#else
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#define USB_DEBUG_VAR ehcidebug
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_transfer.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_hub.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#endif /* USB_GLOBAL_INCLUDE_FILE */
#include <dev/usb/controller/ehci.h>
#include <dev/usb/controller/ehcireg.h>
#define EHCI_BUS2SC(bus) \
((ehci_softc_t *)(((uint8_t *)(bus)) - \
((uint8_t *)&(((ehci_softc_t *)0)->sc_bus))))
#ifdef USB_DEBUG
static int ehcidebug = 0;
static int ehcinohighspeed = 0;
static int ehciiaadbug = 0;
static int ehcilostintrbug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, ehci, CTLFLAG_RW, 0, "USB ehci");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, debug, CTLFLAG_RWTUN,
&ehcidebug, 0, "Debug level");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, no_hs, CTLFLAG_RWTUN,
&ehcinohighspeed, 0, "Disable High Speed USB");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, iaadbug, CTLFLAG_RWTUN,
&ehciiaadbug, 0, "Enable doorbell bug workaround");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, lostintrbug, CTLFLAG_RWTUN,
&ehcilostintrbug, 0, "Enable lost interrupt bug workaround");
static void ehci_dump_regs(ehci_softc_t *sc);
static void ehci_dump_sqh(ehci_softc_t *sc, ehci_qh_t *sqh);
#endif
#define EHCI_INTR_ENDPT 1
static const struct usb_bus_methods ehci_bus_methods;
static const struct usb_pipe_methods ehci_device_bulk_methods;
static const struct usb_pipe_methods ehci_device_ctrl_methods;
static const struct usb_pipe_methods ehci_device_intr_methods;
static const struct usb_pipe_methods ehci_device_isoc_fs_methods;
static const struct usb_pipe_methods ehci_device_isoc_hs_methods;
static void ehci_do_poll(struct usb_bus *);
static void ehci_device_done(struct usb_xfer *, usb_error_t);
static uint8_t ehci_check_transfer(struct usb_xfer *);
static void ehci_timeout(void *);
static void ehci_poll_timeout(void *);
static void ehci_root_intr(ehci_softc_t *sc);
struct ehci_std_temp {
ehci_softc_t *sc;
struct usb_page_cache *pc;
ehci_qtd_t *td;
ehci_qtd_t *td_next;
uint32_t average;
uint32_t qtd_status;
uint32_t len;
uint16_t max_frame_size;
uint8_t shortpkt;
uint8_t auto_data_toggle;
uint8_t setup_alt_next;
uint8_t last_frame;
};
void
ehci_iterate_hw_softc(struct usb_bus *bus, usb_bus_mem_sub_cb_t *cb)
{
ehci_softc_t *sc = EHCI_BUS2SC(bus);
uint32_t i;
cb(bus, &sc->sc_hw.pframes_pc, &sc->sc_hw.pframes_pg,
sizeof(uint32_t) * EHCI_FRAMELIST_COUNT, EHCI_FRAMELIST_ALIGN);
cb(bus, &sc->sc_hw.terminate_pc, &sc->sc_hw.terminate_pg,
sizeof(struct ehci_qh_sub), EHCI_QH_ALIGN);
cb(bus, &sc->sc_hw.async_start_pc, &sc->sc_hw.async_start_pg,
sizeof(ehci_qh_t), EHCI_QH_ALIGN);
for (i = 0; i != EHCI_VIRTUAL_FRAMELIST_COUNT; i++) {
cb(bus, sc->sc_hw.intr_start_pc + i,
sc->sc_hw.intr_start_pg + i,
sizeof(ehci_qh_t), EHCI_QH_ALIGN);
}
for (i = 0; i != EHCI_VIRTUAL_FRAMELIST_COUNT; i++) {
cb(bus, sc->sc_hw.isoc_hs_start_pc + i,
sc->sc_hw.isoc_hs_start_pg + i,
sizeof(ehci_itd_t), EHCI_ITD_ALIGN);
}
for (i = 0; i != EHCI_VIRTUAL_FRAMELIST_COUNT; i++) {
cb(bus, sc->sc_hw.isoc_fs_start_pc + i,
sc->sc_hw.isoc_fs_start_pg + i,
sizeof(ehci_sitd_t), EHCI_SITD_ALIGN);
}
}
usb_error_t
ehci_reset(ehci_softc_t *sc)
{
uint32_t hcr;
int i;
EOWRITE4(sc, EHCI_USBCMD, EHCI_CMD_HCRESET);
for (i = 0; i < 100; i++) {
usb_pause_mtx(NULL, hz / 128);
hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET;
if (!hcr) {
if (sc->sc_vendor_post_reset != NULL)
sc->sc_vendor_post_reset(sc);
return (0);
}
}
device_printf(sc->sc_bus.bdev, "reset timeout\n");
return (USB_ERR_IOERROR);
}
static usb_error_t
ehci_hcreset(ehci_softc_t *sc)
{
uint32_t hcr;
int i;
EOWRITE4(sc, EHCI_USBCMD, 0); /* Halt controller */
for (i = 0; i < 100; i++) {
usb_pause_mtx(NULL, hz / 128);
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr)
break;
}
if (!hcr)
/*
* Fall through and try reset anyway even though
* Table 2-9 in the EHCI spec says this will result
* in undefined behavior.
*/
device_printf(sc->sc_bus.bdev, "stop timeout\n");
return (ehci_reset(sc));
}
static int
ehci_init_sub(struct ehci_softc *sc)
{
struct usb_page_search buf_res;
uint32_t cparams;
uint32_t hcr;
uint8_t i;
cparams = EREAD4(sc, EHCI_HCCPARAMS);
DPRINTF("cparams=0x%x\n", cparams);
if (EHCI_HCC_64BIT(cparams)) {
DPRINTF("HCC uses 64-bit structures\n");
/* MUST clear segment register if 64 bit capable */
EOWRITE4(sc, EHCI_CTRLDSSEGMENT, 0);
}
usbd_get_page(&sc->sc_hw.pframes_pc, 0, &buf_res);
EOWRITE4(sc, EHCI_PERIODICLISTBASE, buf_res.physaddr);
usbd_get_page(&sc->sc_hw.async_start_pc, 0, &buf_res);
EOWRITE4(sc, EHCI_ASYNCLISTADDR, buf_res.physaddr | EHCI_LINK_QH);
/* enable interrupts */
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
/* turn on controller */
EOWRITE4(sc, EHCI_USBCMD,
EHCI_CMD_ITC_1 | /* 1 microframes interrupt delay */
(EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_FLS_M) |
EHCI_CMD_ASE |
EHCI_CMD_PSE |
EHCI_CMD_RS);
/* Take over port ownership */
EOWRITE4(sc, EHCI_CONFIGFLAG, EHCI_CONF_CF);
for (i = 0; i < 100; i++) {
usb_pause_mtx(NULL, hz / 128);
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (!hcr) {
break;
}
}
if (hcr) {
device_printf(sc->sc_bus.bdev, "run timeout\n");
return (USB_ERR_IOERROR);
}
return (USB_ERR_NORMAL_COMPLETION);
}
usb_error_t
ehci_init(ehci_softc_t *sc)
{
struct usb_page_search buf_res;
uint32_t version;
uint32_t sparams;
uint16_t i;
uint16_t x;
uint16_t y;
uint16_t bit;
usb_error_t err = 0;
DPRINTF("start\n");
usb_callout_init_mtx(&sc->sc_tmo_pcd, &sc->sc_bus.bus_mtx, 0);
usb_callout_init_mtx(&sc->sc_tmo_poll, &sc->sc_bus.bus_mtx, 0);
sc->sc_offs = EHCI_CAPLENGTH(EREAD4(sc, EHCI_CAPLEN_HCIVERSION));
#ifdef USB_DEBUG
if (ehciiaadbug)
sc->sc_flags |= EHCI_SCFLG_IAADBUG;
if (ehcilostintrbug)
sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
if (ehcidebug > 2) {
ehci_dump_regs(sc);
}
#endif
version = EHCI_HCIVERSION(EREAD4(sc, EHCI_CAPLEN_HCIVERSION));
device_printf(sc->sc_bus.bdev, "EHCI version %x.%x\n",
version >> 8, version & 0xff);
sparams = EREAD4(sc, EHCI_HCSPARAMS);
DPRINTF("sparams=0x%x\n", sparams);
sc->sc_noport = EHCI_HCS_N_PORTS(sparams);
sc->sc_bus.usbrev = USB_REV_2_0;
if (!(sc->sc_flags & EHCI_SCFLG_DONTRESET)) {
/* Reset the controller */
DPRINTF("%s: resetting\n",
device_get_nameunit(sc->sc_bus.bdev));
err = ehci_hcreset(sc);
if (err) {
device_printf(sc->sc_bus.bdev, "reset timeout\n");
return (err);
}
}
/*
* use current frame-list-size selection 0: 1024*4 bytes 1: 512*4
* bytes 2: 256*4 bytes 3: unknown
*/
if (EHCI_CMD_FLS(EOREAD4(sc, EHCI_USBCMD)) == 3) {
device_printf(sc->sc_bus.bdev, "invalid frame-list-size\n");
return (USB_ERR_IOERROR);
}
/* set up the bus struct */
sc->sc_bus.methods = &ehci_bus_methods;
sc->sc_eintrs = EHCI_NORMAL_INTRS;
if (1) {
struct ehci_qh_sub *qh;
usbd_get_page(&sc->sc_hw.terminate_pc, 0, &buf_res);
qh = buf_res.buffer;
sc->sc_terminate_self = htohc32(sc, buf_res.physaddr);
/* init terminate TD */
qh->qtd_next =
htohc32(sc, EHCI_LINK_TERMINATE);
qh->qtd_altnext =
htohc32(sc, EHCI_LINK_TERMINATE);
qh->qtd_status =
htohc32(sc, EHCI_QTD_HALTED);
}
for (i = 0; i < EHCI_VIRTUAL_FRAMELIST_COUNT; i++) {
ehci_qh_t *qh;
usbd_get_page(sc->sc_hw.intr_start_pc + i, 0, &buf_res);
qh = buf_res.buffer;
/* initialize page cache pointer */
qh->page_cache = sc->sc_hw.intr_start_pc + i;
/* store a pointer to queue head */
sc->sc_intr_p_last[i] = qh;
qh->qh_self =
htohc32(sc, buf_res.physaddr) |
htohc32(sc, EHCI_LINK_QH);
qh->qh_endp =
htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH));
qh->qh_endphub =
htohc32(sc, EHCI_QH_SET_MULT(1));
qh->qh_curqtd = 0;
qh->qh_qtd.qtd_next =
htohc32(sc, EHCI_LINK_TERMINATE);
qh->qh_qtd.qtd_altnext =
htohc32(sc, EHCI_LINK_TERMINATE);
qh->qh_qtd.qtd_status =
htohc32(sc, EHCI_QTD_HALTED);
}
/*
* the QHs are arranged to give poll intervals that are
* powers of 2 times 1ms
*/
bit = EHCI_VIRTUAL_FRAMELIST_COUNT / 2;
while (bit) {
x = bit;
while (x & bit) {
ehci_qh_t *qh_x;
ehci_qh_t *qh_y;
y = (x ^ bit) | (bit / 2);
qh_x = sc->sc_intr_p_last[x];
qh_y = sc->sc_intr_p_last[y];
/*
* the next QH has half the poll interval
*/
qh_x->qh_link = qh_y->qh_self;
x++;
}
bit >>= 1;
}
if (1) {
ehci_qh_t *qh;
qh = sc->sc_intr_p_last[0];
/* the last (1ms) QH terminates */
qh->qh_link = htohc32(sc, EHCI_LINK_TERMINATE);
}
for (i = 0; i < EHCI_VIRTUAL_FRAMELIST_COUNT; i++) {
ehci_sitd_t *sitd;
ehci_itd_t *itd;
usbd_get_page(sc->sc_hw.isoc_fs_start_pc + i, 0, &buf_res);
sitd = buf_res.buffer;
/* initialize page cache pointer */
sitd->page_cache = sc->sc_hw.isoc_fs_start_pc + i;
/* store a pointer to the transfer descriptor */
sc->sc_isoc_fs_p_last[i] = sitd;
/* initialize full speed isochronous */
sitd->sitd_self =
htohc32(sc, buf_res.physaddr) |
htohc32(sc, EHCI_LINK_SITD);
sitd->sitd_back =
htohc32(sc, EHCI_LINK_TERMINATE);
sitd->sitd_next =
sc->sc_intr_p_last[i | (EHCI_VIRTUAL_FRAMELIST_COUNT / 2)]->qh_self;
usbd_get_page(sc->sc_hw.isoc_hs_start_pc + i, 0, &buf_res);
itd = buf_res.buffer;
/* initialize page cache pointer */
itd->page_cache = sc->sc_hw.isoc_hs_start_pc + i;
/* store a pointer to the transfer descriptor */
sc->sc_isoc_hs_p_last[i] = itd;
/* initialize high speed isochronous */
itd->itd_self =
htohc32(sc, buf_res.physaddr) |
htohc32(sc, EHCI_LINK_ITD);
itd->itd_next =
sitd->sitd_self;
}
usbd_get_page(&sc->sc_hw.pframes_pc, 0, &buf_res);
if (1) {
uint32_t *pframes;
pframes = buf_res.buffer;
/*
* execution order:
* pframes -> high speed isochronous ->
* full speed isochronous -> interrupt QH's
*/
for (i = 0; i < EHCI_FRAMELIST_COUNT; i++) {
pframes[i] = sc->sc_isoc_hs_p_last
[i & (EHCI_VIRTUAL_FRAMELIST_COUNT - 1)]->itd_self;
}
}
usbd_get_page(&sc->sc_hw.async_start_pc, 0, &buf_res);
if (1) {
ehci_qh_t *qh;
qh = buf_res.buffer;
/* initialize page cache pointer */
qh->page_cache = &sc->sc_hw.async_start_pc;
/* store a pointer to the queue head */
sc->sc_async_p_last = qh;
/* init dummy QH that starts the async list */
qh->qh_self =
htohc32(sc, buf_res.physaddr) |
htohc32(sc, EHCI_LINK_QH);
/* fill the QH */
qh->qh_endp =
htohc32(sc, EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | EHCI_QH_HRECL);
qh->qh_endphub = htohc32(sc, EHCI_QH_SET_MULT(1));
qh->qh_link = qh->qh_self;
qh->qh_curqtd = 0;
/* fill the overlay qTD */
qh->qh_qtd.qtd_next = htohc32(sc, EHCI_LINK_TERMINATE);
qh->qh_qtd.qtd_altnext = htohc32(sc, EHCI_LINK_TERMINATE);
qh->qh_qtd.qtd_status = htohc32(sc, EHCI_QTD_HALTED);
}
/* flush all cache into memory */
usb_bus_mem_flush_all(&sc->sc_bus, &ehci_iterate_hw_softc);
#ifdef USB_DEBUG
if (ehcidebug) {
ehci_dump_sqh(sc, sc->sc_async_p_last);
}
#endif
/* finial setup */
err = ehci_init_sub(sc);
if (!err) {
/* catch any lost interrupts */
ehci_do_poll(&sc->sc_bus);
}
return (err);
}
/*
* shut down the controller when the system is going down
*/
void
ehci_detach(ehci_softc_t *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
usb_callout_stop(&sc->sc_tmo_pcd);
usb_callout_stop(&sc->sc_tmo_poll);
EOWRITE4(sc, EHCI_USBINTR, 0);
USB_BUS_UNLOCK(&sc->sc_bus);
if (ehci_hcreset(sc)) {
DPRINTF("reset failed!\n");
}
/* XXX let stray task complete */
usb_pause_mtx(NULL, hz / 20);
usb_callout_drain(&sc->sc_tmo_pcd);
usb_callout_drain(&sc->sc_tmo_poll);
}
static void
ehci_suspend(ehci_softc_t *sc)
{
DPRINTF("stopping the HC\n");
/* reset HC */
ehci_hcreset(sc);
}
static void
ehci_resume(ehci_softc_t *sc)
{
/* reset HC */
ehci_hcreset(sc);
/* setup HC */
ehci_init_sub(sc);
/* catch any lost interrupts */
ehci_do_poll(&sc->sc_bus);
}
#ifdef USB_DEBUG
static void
ehci_dump_regs(ehci_softc_t *sc)
{
uint32_t i;
i = EOREAD4(sc, EHCI_USBCMD);
printf("cmd=0x%08x\n", i);
if (i & EHCI_CMD_ITC_1)
printf(" EHCI_CMD_ITC_1\n");
if (i & EHCI_CMD_ITC_2)
printf(" EHCI_CMD_ITC_2\n");
if (i & EHCI_CMD_ITC_4)
printf(" EHCI_CMD_ITC_4\n");
if (i & EHCI_CMD_ITC_8)
printf(" EHCI_CMD_ITC_8\n");
if (i & EHCI_CMD_ITC_16)
printf(" EHCI_CMD_ITC_16\n");
if (i & EHCI_CMD_ITC_32)
printf(" EHCI_CMD_ITC_32\n");
if (i & EHCI_CMD_ITC_64)
printf(" EHCI_CMD_ITC_64\n");
if (i & EHCI_CMD_ASPME)
printf(" EHCI_CMD_ASPME\n");
if (i & EHCI_CMD_ASPMC)
printf(" EHCI_CMD_ASPMC\n");
if (i & EHCI_CMD_LHCR)
printf(" EHCI_CMD_LHCR\n");
if (i & EHCI_CMD_IAAD)
printf(" EHCI_CMD_IAAD\n");
if (i & EHCI_CMD_ASE)
printf(" EHCI_CMD_ASE\n");
if (i & EHCI_CMD_PSE)
printf(" EHCI_CMD_PSE\n");
if (i & EHCI_CMD_FLS_M)
printf(" EHCI_CMD_FLS_M\n");
if (i & EHCI_CMD_HCRESET)
printf(" EHCI_CMD_HCRESET\n");
if (i & EHCI_CMD_RS)
printf(" EHCI_CMD_RS\n");
i = EOREAD4(sc, EHCI_USBSTS);
printf("sts=0x%08x\n", i);
if (i & EHCI_STS_ASS)
printf(" EHCI_STS_ASS\n");
if (i & EHCI_STS_PSS)
printf(" EHCI_STS_PSS\n");
if (i & EHCI_STS_REC)
printf(" EHCI_STS_REC\n");
if (i & EHCI_STS_HCH)
printf(" EHCI_STS_HCH\n");
if (i & EHCI_STS_IAA)
printf(" EHCI_STS_IAA\n");
if (i & EHCI_STS_HSE)
printf(" EHCI_STS_HSE\n");
if (i & EHCI_STS_FLR)
printf(" EHCI_STS_FLR\n");
if (i & EHCI_STS_PCD)
printf(" EHCI_STS_PCD\n");
if (i & EHCI_STS_ERRINT)
printf(" EHCI_STS_ERRINT\n");
if (i & EHCI_STS_INT)
printf(" EHCI_STS_INT\n");
printf("ien=0x%08x\n",
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)));
}
}
static void
ehci_dump_link(ehci_softc_t *sc, uint32_t link, int type)
{
link = hc32toh(sc, 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(">");
}
}
static void
ehci_dump_qtd(ehci_softc_t *sc, ehci_qtd_t *qtd)
{
uint32_t s;
printf(" next=");
ehci_dump_link(sc, qtd->qtd_next, 0);
printf(" altnext=");
ehci_dump_link(sc, qtd->qtd_altnext, 0);
printf("\n");
s = hc32toh(sc, 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=%s%s%s%s%s%s%s%s\n",
EHCI_QTD_GET_CERR(s), EHCI_QTD_GET_PID(s),
(s & EHCI_QTD_ACTIVE) ? "ACTIVE" : "NOT_ACTIVE",
(s & EHCI_QTD_HALTED) ? "-HALTED" : "",
(s & EHCI_QTD_BUFERR) ? "-BUFERR" : "",
(s & EHCI_QTD_BABBLE) ? "-BABBLE" : "",
(s & EHCI_QTD_XACTERR) ? "-XACTERR" : "",
(s & EHCI_QTD_MISSEDMICRO) ? "-MISSED" : "",
(s & EHCI_QTD_SPLITXSTATE) ? "-SPLIT" : "",
(s & EHCI_QTD_PINGSTATE) ? "-PING" : "");
for (s = 0; s < 5; s++) {
printf(" buffer[%d]=0x%08x\n", s,
hc32toh(sc, qtd->qtd_buffer[s]));
}
for (s = 0; s < 5; s++) {
printf(" buffer_hi[%d]=0x%08x\n", s,
hc32toh(sc, qtd->qtd_buffer_hi[s]));
}
}
static uint8_t
ehci_dump_sqtd(ehci_softc_t *sc, ehci_qtd_t *sqtd)
{
uint8_t temp;
usb_pc_cpu_invalidate(sqtd->page_cache);
printf("QTD(%p) at 0x%08x:\n", sqtd, hc32toh(sc, sqtd->qtd_self));
ehci_dump_qtd(sc, sqtd);
temp = (sqtd->qtd_next & htohc32(sc, EHCI_LINK_TERMINATE)) ? 1 : 0;
return (temp);
}
static void
ehci_dump_sqtds(ehci_softc_t *sc, ehci_qtd_t *sqtd)
{
uint16_t i;
uint8_t stop;
stop = 0;
for (i = 0; sqtd && (i < 20) && !stop; sqtd = sqtd->obj_next, i++) {
stop = ehci_dump_sqtd(sc, sqtd);
}
if (sqtd) {
printf("dump aborted, too many TDs\n");
}
}
static void
ehci_dump_sqh(ehci_softc_t *sc, ehci_qh_t *qh)
{
uint32_t endp;
uint32_t endphub;
usb_pc_cpu_invalidate(qh->page_cache);
printf("QH(%p) at 0x%08x:\n", qh, hc32toh(sc, qh->qh_self) & ~0x1F);
printf(" link=");
ehci_dump_link(sc, qh->qh_link, 1);
printf("\n");
endp = hc32toh(sc, 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 = hc32toh(sc, 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(sc, qh->qh_curqtd, 0);
printf("\n");
printf("Overlay qTD:\n");
ehci_dump_qtd(sc, (void *)&qh->qh_qtd);
}
static void
ehci_dump_sitd(ehci_softc_t *sc, ehci_sitd_t *sitd)
{
usb_pc_cpu_invalidate(sitd->page_cache);
printf("SITD(%p) at 0x%08x\n", sitd, hc32toh(sc, sitd->sitd_self) & ~0x1F);
printf(" next=0x%08x\n", hc32toh(sc, sitd->sitd_next));
printf(" portaddr=0x%08x dir=%s addr=%d endpt=0x%x port=0x%x huba=0x%x\n",
hc32toh(sc, sitd->sitd_portaddr),
(sitd->sitd_portaddr & htohc32(sc, EHCI_SITD_SET_DIR_IN))
? "in" : "out",
EHCI_SITD_GET_ADDR(hc32toh(sc, sitd->sitd_portaddr)),
EHCI_SITD_GET_ENDPT(hc32toh(sc, sitd->sitd_portaddr)),
EHCI_SITD_GET_PORT(hc32toh(sc, sitd->sitd_portaddr)),
EHCI_SITD_GET_HUBA(hc32toh(sc, sitd->sitd_portaddr)));
printf(" mask=0x%08x\n", hc32toh(sc, sitd->sitd_mask));
printf(" status=0x%08x <%s> len=0x%x\n", hc32toh(sc, sitd->sitd_status),
(sitd->sitd_status & htohc32(sc, EHCI_SITD_ACTIVE)) ? "ACTIVE" : "",
EHCI_SITD_GET_LEN(hc32toh(sc, sitd->sitd_status)));
printf(" back=0x%08x, bp=0x%08x,0x%08x,0x%08x,0x%08x\n",
hc32toh(sc, sitd->sitd_back),
hc32toh(sc, sitd->sitd_bp[0]),
hc32toh(sc, sitd->sitd_bp[1]),
hc32toh(sc, sitd->sitd_bp_hi[0]),
hc32toh(sc, sitd->sitd_bp_hi[1]));
}
static void
ehci_dump_itd(ehci_softc_t *sc, ehci_itd_t *itd)
{
usb_pc_cpu_invalidate(itd->page_cache);
printf("ITD(%p) at 0x%08x\n", itd, hc32toh(sc, itd->itd_self) & ~0x1F);
printf(" next=0x%08x\n", hc32toh(sc, itd->itd_next));
printf(" status[0]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[0]),
(itd->itd_status[0] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[1]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[1]),
(itd->itd_status[1] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[2]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[2]),
(itd->itd_status[2] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[3]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[3]),
(itd->itd_status[3] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[4]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[4]),
(itd->itd_status[4] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[5]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[5]),
(itd->itd_status[5] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[6]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[6]),
(itd->itd_status[6] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" status[7]=0x%08x; <%s>\n", hc32toh(sc, itd->itd_status[7]),
(itd->itd_status[7] & htohc32(sc, EHCI_ITD_ACTIVE)) ? "ACTIVE" : "");
printf(" bp[0]=0x%08x\n", hc32toh(sc, itd->itd_bp[0]));
printf(" addr=0x%02x; endpt=0x%01x\n",
EHCI_ITD_GET_ADDR(hc32toh(sc, itd->itd_bp[0])),
EHCI_ITD_GET_ENDPT(hc32toh(sc, itd->itd_bp[0])));
printf(" bp[1]=0x%08x\n", hc32toh(sc, itd->itd_bp[1]));
printf(" dir=%s; mpl=0x%02x\n",
(hc32toh(sc, itd->itd_bp[1]) & EHCI_ITD_SET_DIR_IN) ? "in" : "out",
EHCI_ITD_GET_MPL(hc32toh(sc, itd->itd_bp[1])));
printf(" bp[2..6]=0x%08x,0x%08x,0x%08x,0x%08x,0x%08x\n",
hc32toh(sc, itd->itd_bp[2]),
hc32toh(sc, itd->itd_bp[3]),
hc32toh(sc, itd->itd_bp[4]),
hc32toh(sc, itd->itd_bp[5]),
hc32toh(sc, itd->itd_bp[6]));
printf(" bp_hi=0x%08x,0x%08x,0x%08x,0x%08x,\n"
" 0x%08x,0x%08x,0x%08x\n",
hc32toh(sc, itd->itd_bp_hi[0]),
hc32toh(sc, itd->itd_bp_hi[1]),
hc32toh(sc, itd->itd_bp_hi[2]),
hc32toh(sc, itd->itd_bp_hi[3]),
hc32toh(sc, itd->itd_bp_hi[4]),
hc32toh(sc, itd->itd_bp_hi[5]),
hc32toh(sc, itd->itd_bp_hi[6]));
}
static void
ehci_dump_isoc(ehci_softc_t *sc)
{
ehci_itd_t *itd;
ehci_sitd_t *sitd;
uint16_t max = 1000;
uint16_t pos;
pos = (EOREAD4(sc, EHCI_FRINDEX) / 8) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
printf("%s: isochronous dump from frame 0x%03x:\n",
__FUNCTION__, pos);
itd = sc->sc_isoc_hs_p_last[pos];
sitd = sc->sc_isoc_fs_p_last[pos];
while (itd && max && max--) {
ehci_dump_itd(sc, itd);
itd = itd->prev;
}
while (sitd && max && max--) {
ehci_dump_sitd(sc, sitd);
sitd = sitd->prev;
}
}
#endif
static void
ehci_transfer_intr_enqueue(struct usb_xfer *xfer)
{
/* check for early completion */
if (ehci_check_transfer(xfer)) {
return;
}
/* put transfer on interrupt queue */
usbd_transfer_enqueue(&xfer->xroot->bus->intr_q, xfer);
/* start timeout, if any */
if (xfer->timeout != 0) {
usbd_transfer_timeout_ms(xfer, &ehci_timeout, xfer->timeout);
}
}
#define EHCI_APPEND_FS_TD(std,last) (last) = _ehci_append_fs_td(std,last)
static ehci_sitd_t *
_ehci_append_fs_td(ehci_sitd_t *std, ehci_sitd_t *last)
{
DPRINTFN(11, "%p to %p\n", std, last);
/* (sc->sc_bus.mtx) must be locked */
std->next = last->next;
std->sitd_next = last->sitd_next;
std->prev = last;
usb_pc_cpu_flush(std->page_cache);
/*
* the last->next->prev is never followed: std->next->prev = std;
*/
last->next = std;
last->sitd_next = std->sitd_self;
usb_pc_cpu_flush(last->page_cache);
return (std);
}
#define EHCI_APPEND_HS_TD(std,last) (last) = _ehci_append_hs_td(std,last)
static ehci_itd_t *
_ehci_append_hs_td(ehci_itd_t *std, ehci_itd_t *last)
{
DPRINTFN(11, "%p to %p\n", std, last);
/* (sc->sc_bus.mtx) must be locked */
std->next = last->next;
std->itd_next = last->itd_next;
std->prev = last;
usb_pc_cpu_flush(std->page_cache);
/*
* the last->next->prev is never followed: std->next->prev = std;
*/
last->next = std;
last->itd_next = std->itd_self;
usb_pc_cpu_flush(last->page_cache);
return (std);
}
#define EHCI_APPEND_QH(sqh,last) (last) = _ehci_append_qh(sqh,last)
static ehci_qh_t *
_ehci_append_qh(ehci_qh_t *sqh, ehci_qh_t *last)
{
DPRINTFN(11, "%p to %p\n", sqh, last);
if (sqh->prev != NULL) {
/* should not happen */
DPRINTFN(0, "QH already linked!\n");
return (last);
}
/* (sc->sc_bus.mtx) must be locked */
sqh->next = last->next;
sqh->qh_link = last->qh_link;
sqh->prev = last;
usb_pc_cpu_flush(sqh->page_cache);
/*
* the last->next->prev is never followed: sqh->next->prev = sqh;
*/
last->next = sqh;
last->qh_link = sqh->qh_self;
usb_pc_cpu_flush(last->page_cache);
return (sqh);
}
#define EHCI_REMOVE_FS_TD(std,last) (last) = _ehci_remove_fs_td(std,last)
static ehci_sitd_t *
_ehci_remove_fs_td(ehci_sitd_t *std, ehci_sitd_t *last)
{
DPRINTFN(11, "%p from %p\n", std, last);
/* (sc->sc_bus.mtx) must be locked */
std->prev->next = std->next;
std->prev->sitd_next = std->sitd_next;
usb_pc_cpu_flush(std->prev->page_cache);
if (std->next) {
std->next->prev = std->prev;
usb_pc_cpu_flush(std->next->page_cache);
}
return ((last == std) ? std->prev : last);
}
#define EHCI_REMOVE_HS_TD(std,last) (last) = _ehci_remove_hs_td(std,last)
static ehci_itd_t *
_ehci_remove_hs_td(ehci_itd_t *std, ehci_itd_t *last)
{
DPRINTFN(11, "%p from %p\n", std, last);
/* (sc->sc_bus.mtx) must be locked */
std->prev->next = std->next;
std->prev->itd_next = std->itd_next;
usb_pc_cpu_flush(std->prev->page_cache);
if (std->next) {
std->next->prev = std->prev;
usb_pc_cpu_flush(std->next->page_cache);
}
return ((last == std) ? std->prev : last);
}
#define EHCI_REMOVE_QH(sqh,last) (last) = _ehci_remove_qh(sqh,last)
static ehci_qh_t *
_ehci_remove_qh(ehci_qh_t *sqh, ehci_qh_t *last)
{
DPRINTFN(11, "%p from %p\n", sqh, last);
/* (sc->sc_bus.mtx) must be locked */
/* only remove if not removed from a queue */
if (sqh->prev) {
sqh->prev->next = sqh->next;
sqh->prev->qh_link = sqh->qh_link;
usb_pc_cpu_flush(sqh->prev->page_cache);
if (sqh->next) {
sqh->next->prev = sqh->prev;
usb_pc_cpu_flush(sqh->next->page_cache);
}
last = ((last == sqh) ? sqh->prev : last);
sqh->prev = 0;
usb_pc_cpu_flush(sqh->page_cache);
}
return (last);
}
static void
ehci_data_toggle_update(struct usb_xfer *xfer, uint16_t actlen, uint16_t xlen)
{
uint16_t rem;
uint8_t dt;
/* count number of full packets */
dt = (actlen / xfer->max_packet_size) & 1;
/* compute remainder */
rem = actlen % xfer->max_packet_size;
if (rem > 0)
dt ^= 1; /* short packet at the end */
else if (actlen != xlen)
dt ^= 1; /* zero length packet at the end */
else if (xlen == 0)
dt ^= 1; /* zero length transfer */
xfer->endpoint->toggle_next ^= dt;
}
static usb_error_t
ehci_non_isoc_done_sub(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_qtd_t *td;
ehci_qtd_t *td_alt_next;
uint32_t status;
uint16_t len;
td = xfer->td_transfer_cache;
td_alt_next = td->alt_next;
if (xfer->aframes != xfer->nframes) {
usbd_xfer_set_frame_len(xfer, xfer->aframes, 0);
}
while (1) {
usb_pc_cpu_invalidate(td->page_cache);
status = hc32toh(sc, td->qtd_status);
len = EHCI_QTD_GET_BYTES(status);
/*
* Verify the status length and
* add the length to "frlengths[]":
*/
if (len > td->len) {
/* should not happen */
DPRINTF("Invalid status length, "
"0x%04x/0x%04x bytes\n", len, td->len);
status |= EHCI_QTD_HALTED;
} else if (xfer->aframes != xfer->nframes) {
xfer->frlengths[xfer->aframes] += td->len - len;
/* manually update data toggle */
ehci_data_toggle_update(xfer, td->len - len, td->len);
}
/* Check for last transfer */
if (((void *)td) == xfer->td_transfer_last) {
td = NULL;
break;
}
/* Check for transfer error */
if (status & EHCI_QTD_HALTED) {
/* the transfer is finished */
td = NULL;
break;
}
/* Check for short transfer */
if (len > 0) {
if (xfer->flags_int.short_frames_ok) {
/* follow alt next */
td = td->alt_next;
} else {
/* the transfer is finished */
td = NULL;
}
break;
}
td = td->obj_next;
if (td->alt_next != td_alt_next) {
/* this USB frame is complete */
break;
}
}
/* update transfer cache */
xfer->td_transfer_cache = td;
#ifdef USB_DEBUG
if (status & EHCI_QTD_STATERRS) {
DPRINTFN(11, "error, addr=%d, endpt=0x%02x, frame=0x%02x"
"status=%s%s%s%s%s%s%s%s\n",
xfer->address, xfer->endpointno, xfer->aframes,
(status & EHCI_QTD_ACTIVE) ? "[ACTIVE]" : "[NOT_ACTIVE]",
(status & EHCI_QTD_HALTED) ? "[HALTED]" : "",
(status & EHCI_QTD_BUFERR) ? "[BUFERR]" : "",
(status & EHCI_QTD_BABBLE) ? "[BABBLE]" : "",
(status & EHCI_QTD_XACTERR) ? "[XACTERR]" : "",
(status & EHCI_QTD_MISSEDMICRO) ? "[MISSED]" : "",
(status & EHCI_QTD_SPLITXSTATE) ? "[SPLIT]" : "",
(status & EHCI_QTD_PINGSTATE) ? "[PING]" : "");
}
#endif
if (status & EHCI_QTD_HALTED) {
if ((xfer->xroot->udev->parent_hs_hub != NULL) ||
(xfer->xroot->udev->address != 0)) {
/* try to separate I/O errors from STALL */
if (EHCI_QTD_GET_CERR(status) == 0)
return (USB_ERR_IOERROR);
}
return (USB_ERR_STALLED);
}
return (USB_ERR_NORMAL_COMPLETION);
}
static void
ehci_non_isoc_done(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_qh_t *qh;
uint32_t status;
usb_error_t err = 0;
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
#ifdef USB_DEBUG
if (ehcidebug > 10) {
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_dump_sqtds(sc, xfer->td_transfer_first);
}
#endif
/* extract data toggle directly from the QH's overlay area */
qh = xfer->qh_start[xfer->flags_int.curr_dma_set];
usb_pc_cpu_invalidate(qh->page_cache);
status = hc32toh(sc, qh->qh_qtd.qtd_status);
/* reset scanner */
xfer->td_transfer_cache = xfer->td_transfer_first;
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
err = ehci_non_isoc_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = ehci_non_isoc_done_sub(xfer);
xfer->aframes++;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
if (xfer->flags_int.control_xfr &&
!xfer->flags_int.control_act) {
err = ehci_non_isoc_done_sub(xfer);
}
done:
ehci_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* ehci_check_transfer
*
* Return values:
* 0: USB transfer is not finished
* Else: USB transfer is finished
*------------------------------------------------------------------------*/
static uint8_t
ehci_check_transfer(struct usb_xfer *xfer)
{
const struct usb_pipe_methods *methods = xfer->endpoint->methods;
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
uint32_t status;
DPRINTFN(13, "xfer=%p checking transfer\n", xfer);
if (methods == &ehci_device_isoc_fs_methods) {
ehci_sitd_t *td;
/* isochronous full speed transfer */
td = xfer->td_transfer_last;
usb_pc_cpu_invalidate(td->page_cache);
status = hc32toh(sc, td->sitd_status);
/* also check if first is complete */
td = xfer->td_transfer_first;
usb_pc_cpu_invalidate(td->page_cache);
status |= hc32toh(sc, td->sitd_status);
if (!(status & EHCI_SITD_ACTIVE)) {
ehci_device_done(xfer, USB_ERR_NORMAL_COMPLETION);
goto transferred;
}
} else if (methods == &ehci_device_isoc_hs_methods) {
ehci_itd_t *td;
/* isochronous high speed transfer */
/* check last transfer */
td = xfer->td_transfer_last;
usb_pc_cpu_invalidate(td->page_cache);
status = td->itd_status[0];
status |= td->itd_status[1];
status |= td->itd_status[2];
status |= td->itd_status[3];
status |= td->itd_status[4];
status |= td->itd_status[5];
status |= td->itd_status[6];
status |= td->itd_status[7];
/* also check first transfer */
td = xfer->td_transfer_first;
usb_pc_cpu_invalidate(td->page_cache);
status |= td->itd_status[0];
status |= td->itd_status[1];
status |= td->itd_status[2];
status |= td->itd_status[3];
status |= td->itd_status[4];
status |= td->itd_status[5];
status |= td->itd_status[6];
status |= td->itd_status[7];
/* if no transactions are active we continue */
if (!(status & htohc32(sc, EHCI_ITD_ACTIVE))) {
ehci_device_done(xfer, USB_ERR_NORMAL_COMPLETION);
goto transferred;
}
} else {
ehci_qtd_t *td;
ehci_qh_t *qh;
/* non-isochronous transfer */
/*
* check whether there is an error somewhere in the middle,
* or whether there was a short packet (SPD and not ACTIVE)
*/
td = xfer->td_transfer_cache;
qh = xfer->qh_start[xfer->flags_int.curr_dma_set];
usb_pc_cpu_invalidate(qh->page_cache);
status = hc32toh(sc, qh->qh_qtd.qtd_status);
if (status & EHCI_QTD_ACTIVE) {
/* transfer is pending */
goto done;
}
while (1) {
usb_pc_cpu_invalidate(td->page_cache);
status = hc32toh(sc, td->qtd_status);
/*
* Check if there is an active TD which
* indicates that the transfer isn't done.
*/
if (status & EHCI_QTD_ACTIVE) {
/* update cache */
xfer->td_transfer_cache = td;
goto done;
}
/*
* last transfer descriptor makes the transfer done
*/
if (((void *)td) == xfer->td_transfer_last) {
break;
}
/*
* any kind of error makes the transfer done
*/
if (status & EHCI_QTD_HALTED) {
break;
}
/*
* if there is no alternate next transfer, a short
* packet also makes the transfer done
*/
if (EHCI_QTD_GET_BYTES(status)) {
if (xfer->flags_int.short_frames_ok) {
/* follow alt next */
if (td->alt_next) {
td = td->alt_next;
continue;
}
}
/* transfer is done */
break;
}
td = td->obj_next;
}
ehci_non_isoc_done(xfer);
goto transferred;
}
done:
DPRINTFN(13, "xfer=%p is still active\n", xfer);
return (0);
transferred:
return (1);
}
static void
ehci_pcd_enable(ehci_softc_t *sc)
{
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
sc->sc_eintrs |= EHCI_STS_PCD;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
/* acknowledge any PCD interrupt */
EOWRITE4(sc, EHCI_USBSTS, EHCI_STS_PCD);
ehci_root_intr(sc);
}
static void
ehci_interrupt_poll(ehci_softc_t *sc)
{
struct usb_xfer *xfer;
repeat:
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
/*
* check if transfer is transferred
*/
if (ehci_check_transfer(xfer)) {
/* queue has been modified */
goto repeat;
}
}
}
/*
* Some EHCI chips from VIA / ATI seem to trigger interrupts before
* writing back the qTD status, or miss signalling occasionally under
* heavy load. If the host machine is too fast, we can miss
* transaction completion - when we scan the active list the
* transaction still seems to be active. This generally exhibits
* itself as a umass stall that never recovers.
*
* We work around this behaviour by setting up this callback after any
* softintr that completes with transactions still pending, giving us
* another chance to check for completion after the writeback has
* taken place.
*/
static void
ehci_poll_timeout(void *arg)
{
ehci_softc_t *sc = arg;
DPRINTFN(3, "\n");
ehci_interrupt_poll(sc);
}
/*------------------------------------------------------------------------*
* ehci_interrupt - EHCI interrupt handler
*
* NOTE: Do not access "sc->sc_bus.bdev" inside the interrupt handler,
* hence the interrupt handler will be setup before "sc->sc_bus.bdev"
* is present !
*------------------------------------------------------------------------*/
void
ehci_interrupt(ehci_softc_t *sc)
{
uint32_t status;
USB_BUS_LOCK(&sc->sc_bus);
DPRINTFN(16, "real interrupt\n");
#ifdef USB_DEBUG
if (ehcidebug > 15) {
ehci_dump_regs(sc);
}
#endif
status = EHCI_STS_INTRS(EOREAD4(sc, EHCI_USBSTS));
if (status == 0) {
/* the interrupt was not for us */
goto done;
}
if (!(status & sc->sc_eintrs)) {
goto done;
}
EOWRITE4(sc, EHCI_USBSTS, status); /* acknowledge */
status &= sc->sc_eintrs;
if (status & EHCI_STS_HSE) {
printf("%s: unrecoverable error, "
"controller halted\n", __FUNCTION__);
#ifdef USB_DEBUG
ehci_dump_regs(sc);
ehci_dump_isoc(sc);
#endif
}
if (status & EHCI_STS_PCD) {
/*
* Disable PCD interrupt for now, because it will be
* on until the port has been reset.
*/
sc->sc_eintrs &= ~EHCI_STS_PCD;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
ehci_root_intr(sc);
/* do not allow RHSC interrupts > 1 per second */
usb_callout_reset(&sc->sc_tmo_pcd, hz,
(void *)&ehci_pcd_enable, sc);
}
status &= ~(EHCI_STS_INT | EHCI_STS_ERRINT | EHCI_STS_PCD | EHCI_STS_IAA);
if (status != 0) {
/* block unprocessed interrupts */
sc->sc_eintrs &= ~status;
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
printf("%s: blocking interrupts 0x%x\n", __FUNCTION__, status);
}
/* poll all the USB transfers */
ehci_interrupt_poll(sc);
if (sc->sc_flags & EHCI_SCFLG_LOSTINTRBUG) {
usb_callout_reset(&sc->sc_tmo_poll, hz / 128,
(void *)&ehci_poll_timeout, sc);
}
done:
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*
* called when a request does not complete
*/
static void
ehci_timeout(void *arg)
{
struct usb_xfer *xfer = arg;
DPRINTF("xfer=%p\n", xfer);
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
/* transfer is transferred */
ehci_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
ehci_do_poll(struct usb_bus *bus)
{
ehci_softc_t *sc = EHCI_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
ehci_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
ehci_setup_standard_chain_sub(struct ehci_std_temp *temp)
{
struct usb_page_search buf_res;
ehci_qtd_t *td;
ehci_qtd_t *td_next;
ehci_qtd_t *td_alt_next;
uint32_t buf_offset;
uint32_t average;
uint32_t len_old;
uint32_t terminate;
uint32_t qtd_altnext;
uint8_t shortpkt_old;
uint8_t precompute;
terminate = temp->sc->sc_terminate_self;
qtd_altnext = temp->sc->sc_terminate_self;
td_alt_next = NULL;
buf_offset = 0;
shortpkt_old = temp->shortpkt;
len_old = temp->len;
precompute = 1;
restart:
td = temp->td;
td_next = temp->td_next;
while (1) {
if (temp->len == 0) {
if (temp->shortpkt) {
break;
}
/* send a Zero Length Packet, ZLP, last */
temp->shortpkt = 1;
average = 0;
} else {
average = temp->average;
if (temp->len < average) {
if (temp->len % temp->max_frame_size) {
temp->shortpkt = 1;
}
average = temp->len;
}
}
if (td_next == NULL) {
panic("%s: out of EHCI transfer descriptors!", __FUNCTION__);
}
/* get next TD */
td = td_next;
td_next = td->obj_next;
/* check if we are pre-computing */
if (precompute) {
/* update remaining length */
temp->len -= average;
continue;
}
/* fill out current TD */
td->qtd_status =
temp->qtd_status |
htohc32(temp->sc, EHCI_QTD_IOC |
EHCI_QTD_SET_BYTES(average));
if (average == 0) {
if (temp->auto_data_toggle == 0) {
/* update data toggle, ZLP case */
temp->qtd_status ^=
htohc32(temp->sc, EHCI_QTD_TOGGLE_MASK);
}
td->len = 0;
/* properly reset reserved fields */
td->qtd_buffer[0] = 0;
td->qtd_buffer[1] = 0;
td->qtd_buffer[2] = 0;
td->qtd_buffer[3] = 0;
td->qtd_buffer[4] = 0;
td->qtd_buffer_hi[0] = 0;
td->qtd_buffer_hi[1] = 0;
td->qtd_buffer_hi[2] = 0;
td->qtd_buffer_hi[3] = 0;
td->qtd_buffer_hi[4] = 0;
} else {
uint8_t x;
if (temp->auto_data_toggle == 0) {
/* update data toggle */
if (howmany(average, temp->max_frame_size) & 1) {
temp->qtd_status ^=
htohc32(temp->sc, EHCI_QTD_TOGGLE_MASK);
}
}
td->len = average;
/* update remaining length */
temp->len -= average;
/* fill out buffer pointers */
usbd_get_page(temp->pc, buf_offset, &buf_res);
td->qtd_buffer[0] =
htohc32(temp->sc, buf_res.physaddr);
td->qtd_buffer_hi[0] = 0;
x = 1;
while (average > EHCI_PAGE_SIZE) {
average -= EHCI_PAGE_SIZE;
buf_offset += EHCI_PAGE_SIZE;
usbd_get_page(temp->pc, buf_offset, &buf_res);
td->qtd_buffer[x] =
htohc32(temp->sc,
buf_res.physaddr & (~0xFFF));
td->qtd_buffer_hi[x] = 0;
x++;
}
/*
* NOTE: The "average" variable is never zero after
* exiting the loop above !
*
* NOTE: We have to subtract one from the offset to
* ensure that we are computing the physical address
* of a valid page !
*/
buf_offset += average;
usbd_get_page(temp->pc, buf_offset - 1, &buf_res);
td->qtd_buffer[x] =
htohc32(temp->sc,
buf_res.physaddr & (~0xFFF));
td->qtd_buffer_hi[x] = 0;
/* properly reset reserved fields */
while (++x < EHCI_QTD_NBUFFERS) {
td->qtd_buffer[x] = 0;
td->qtd_buffer_hi[x] = 0;
}
}
if (td_next) {
/* link the current TD with the next one */
td->qtd_next = td_next->qtd_self;
}
td->qtd_altnext = qtd_altnext;
td->alt_next = td_alt_next;
usb_pc_cpu_flush(td->page_cache);
}
if (precompute) {
precompute = 0;
/* setup alt next pointer, if any */
if (temp->last_frame) {
td_alt_next = NULL;
qtd_altnext = terminate;
} else {
/* we use this field internally */
td_alt_next = td_next;
if (temp->setup_alt_next) {
qtd_altnext = td_next->qtd_self;
} else {
qtd_altnext = terminate;
}
}
/* restore */
temp->shortpkt = shortpkt_old;
temp->len = len_old;
goto restart;
}
temp->td = td;
temp->td_next = td_next;
}
static void
ehci_setup_standard_chain(struct usb_xfer *xfer, ehci_qh_t **qh_last)
{
struct ehci_std_temp temp;
const struct usb_pipe_methods *methods;
ehci_qh_t *qh;
ehci_qtd_t *td;
uint32_t qh_endp;
uint32_t qh_endphub;
uint32_t x;
DPRINTFN(9, "addr=%d endpt=%d sumlen=%d speed=%d\n",
xfer->address, UE_GET_ADDR(xfer->endpointno),
xfer->sumlen, usbd_get_speed(xfer->xroot->udev));
temp.average = xfer->max_hc_frame_size;
temp.max_frame_size = xfer->max_frame_size;
temp.sc = EHCI_BUS2SC(xfer->xroot->bus);
/* toggle the DMA set we are using */
xfer->flags_int.curr_dma_set ^= 1;
/* get next DMA set */
td = xfer->td_start[xfer->flags_int.curr_dma_set];
xfer->td_transfer_first = td;
xfer->td_transfer_cache = td;
temp.td = NULL;
temp.td_next = td;
temp.qtd_status = 0;
temp.last_frame = 0;
temp.setup_alt_next = xfer->flags_int.short_frames_ok;
if (xfer->flags_int.control_xfr) {
if (xfer->endpoint->toggle_next) {
/* DATA1 is next */
temp.qtd_status |=
htohc32(temp.sc, EHCI_QTD_SET_TOGGLE(1));
}
temp.auto_data_toggle = 0;
} else {
temp.auto_data_toggle = 1;
}
if ((xfer->xroot->udev->parent_hs_hub != NULL) ||
(xfer->xroot->udev->address != 0)) {
/* max 3 retries */
temp.qtd_status |=
htohc32(temp.sc, EHCI_QTD_SET_CERR(3));
}
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
xfer->endpoint->toggle_next = 0;
temp.qtd_status &=
htohc32(temp.sc, EHCI_QTD_SET_CERR(3));
temp.qtd_status |= htohc32(temp.sc,
EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_SETUP) |
EHCI_QTD_SET_TOGGLE(0));
temp.len = xfer->frlengths[0];
temp.pc = xfer->frbuffers + 0;
temp.shortpkt = temp.len ? 1 : 0;
/* check for last frame */
if (xfer->nframes == 1) {
/* no STATUS stage yet, SETUP is last */
if (xfer->flags_int.control_act) {
temp.last_frame = 1;
temp.setup_alt_next = 0;
}
}
ehci_setup_standard_chain_sub(&temp);
}
x = 1;
} else {
x = 0;
}
while (x != xfer->nframes) {
/* DATA0 / DATA1 message */
temp.len = xfer->frlengths[x];
temp.pc = xfer->frbuffers + x;
x++;
if (x == xfer->nframes) {
if (xfer->flags_int.control_xfr) {
/* no STATUS stage yet, DATA is last */
if (xfer->flags_int.control_act) {
temp.last_frame = 1;
temp.setup_alt_next = 0;
}
} else {
temp.last_frame = 1;
temp.setup_alt_next = 0;
}
}
/* keep previous data toggle and error count */
temp.qtd_status &=
htohc32(temp.sc, EHCI_QTD_SET_CERR(3) |
EHCI_QTD_SET_TOGGLE(1));
if (temp.len == 0) {
/* make sure that we send an USB packet */
temp.shortpkt = 0;
} else {
/* regular data transfer */
temp.shortpkt = (xfer->flags.force_short_xfer) ? 0 : 1;
}
/* set endpoint direction */
temp.qtd_status |=
(UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) ?
htohc32(temp.sc, EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_IN)) :
htohc32(temp.sc, EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_OUT));
ehci_setup_standard_chain_sub(&temp);
}
/* check if we should append a status stage */
if (xfer->flags_int.control_xfr &&
!xfer->flags_int.control_act) {
/*
* Send a DATA1 message and invert the current endpoint
* direction.
*/
temp.qtd_status &= htohc32(temp.sc, EHCI_QTD_SET_CERR(3) |
EHCI_QTD_SET_TOGGLE(1));
temp.qtd_status |=
(UE_GET_DIR(xfer->endpointno) == UE_DIR_OUT) ?
htohc32(temp.sc, EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_IN) |
EHCI_QTD_SET_TOGGLE(1)) :
htohc32(temp.sc, EHCI_QTD_ACTIVE |
EHCI_QTD_SET_PID(EHCI_QTD_PID_OUT) |
EHCI_QTD_SET_TOGGLE(1));
temp.len = 0;
temp.pc = NULL;
temp.shortpkt = 0;
temp.last_frame = 1;
temp.setup_alt_next = 0;
ehci_setup_standard_chain_sub(&temp);
}
td = temp.td;
/* the last TD terminates the transfer: */
td->qtd_next = htohc32(temp.sc, EHCI_LINK_TERMINATE);
td->qtd_altnext = htohc32(temp.sc, EHCI_LINK_TERMINATE);
usb_pc_cpu_flush(td->page_cache);
/* must have at least one frame! */
xfer->td_transfer_last = td;
#ifdef USB_DEBUG
if (ehcidebug > 8) {
DPRINTF("nexttog=%d; data before transfer:\n",
xfer->endpoint->toggle_next);
ehci_dump_sqtds(temp.sc,
xfer->td_transfer_first);
}
#endif
methods = xfer->endpoint->methods;
qh = xfer->qh_start[xfer->flags_int.curr_dma_set];
/* the "qh_link" field is filled when the QH is added */
qh_endp =
(EHCI_QH_SET_ADDR(xfer->address) |
EHCI_QH_SET_ENDPT(UE_GET_ADDR(xfer->endpointno)) |
EHCI_QH_SET_MPL(xfer->max_packet_size));
if (usbd_get_speed(xfer->xroot->udev) == USB_SPEED_HIGH) {
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH);
if (methods != &ehci_device_intr_methods)
qh_endp |= EHCI_QH_SET_NRL(8);
} else {
if (usbd_get_speed(xfer->xroot->udev) == USB_SPEED_FULL) {
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_FULL);
} else {
qh_endp |= EHCI_QH_SET_EPS(EHCI_QH_SPEED_LOW);
}
if (methods == &ehci_device_ctrl_methods) {
qh_endp |= EHCI_QH_CTL;
}
if (methods != &ehci_device_intr_methods) {
/* Only try one time per microframe! */
qh_endp |= EHCI_QH_SET_NRL(1);
}
}
if (temp.auto_data_toggle == 0) {
/* software computes the data toggle */
qh_endp |= EHCI_QH_DTC;
}
qh->qh_endp = htohc32(temp.sc, qh_endp);
qh_endphub =
(EHCI_QH_SET_MULT(xfer->max_packet_count & 3) |
EHCI_QH_SET_CMASK(xfer->endpoint->usb_cmask) |
EHCI_QH_SET_SMASK(xfer->endpoint->usb_smask) |
EHCI_QH_SET_HUBA(xfer->xroot->udev->hs_hub_addr) |
EHCI_QH_SET_PORT(xfer->xroot->udev->hs_port_no));
qh->qh_endphub = htohc32(temp.sc, qh_endphub);
qh->qh_curqtd = 0;
/* fill the overlay qTD */
if (temp.auto_data_toggle && xfer->endpoint->toggle_next) {
/* DATA1 is next */
qh->qh_qtd.qtd_status = htohc32(temp.sc, EHCI_QTD_SET_TOGGLE(1));
} else {
qh->qh_qtd.qtd_status = 0;
}
td = xfer->td_transfer_first;
qh->qh_qtd.qtd_next = td->qtd_self;
qh->qh_qtd.qtd_altnext =
htohc32(temp.sc, EHCI_LINK_TERMINATE);
/* properly reset reserved fields */
qh->qh_qtd.qtd_buffer[0] = 0;
qh->qh_qtd.qtd_buffer[1] = 0;
qh->qh_qtd.qtd_buffer[2] = 0;
qh->qh_qtd.qtd_buffer[3] = 0;
qh->qh_qtd.qtd_buffer[4] = 0;
qh->qh_qtd.qtd_buffer_hi[0] = 0;
qh->qh_qtd.qtd_buffer_hi[1] = 0;
qh->qh_qtd.qtd_buffer_hi[2] = 0;
qh->qh_qtd.qtd_buffer_hi[3] = 0;
qh->qh_qtd.qtd_buffer_hi[4] = 0;
usb_pc_cpu_flush(qh->page_cache);
if (xfer->xroot->udev->flags.self_suspended == 0) {
EHCI_APPEND_QH(qh, *qh_last);
}
}
static void
ehci_root_intr(ehci_softc_t *sc)
{
uint16_t i;
uint16_t m;
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* clear any old interrupt data */
memset(sc->sc_hub_idata, 0, sizeof(sc->sc_hub_idata));
/* set bits */
m = (sc->sc_noport + 1);
if (m > (8 * sizeof(sc->sc_hub_idata))) {
m = (8 * sizeof(sc->sc_hub_idata));
}
for (i = 1; i < m; i++) {
/* pick out CHANGE bits from the status register */
if (EOREAD4(sc, EHCI_PORTSC(i)) & EHCI_PS_CLEAR) {
sc->sc_hub_idata[i / 8] |= 1 << (i % 8);
DPRINTF("port %d changed\n", i);
}
}
uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata,
sizeof(sc->sc_hub_idata));
}
static void
ehci_isoc_fs_done(ehci_softc_t *sc, struct usb_xfer *xfer)
{
uint32_t nframes = xfer->nframes;
uint32_t status;
uint32_t *plen = xfer->frlengths;
uint16_t len = 0;
ehci_sitd_t *td = xfer->td_transfer_first;
ehci_sitd_t **pp_last = &sc->sc_isoc_fs_p_last[xfer->qh_pos];
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
while (nframes--) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
if (pp_last >= &sc->sc_isoc_fs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT]) {
pp_last = &sc->sc_isoc_fs_p_last[0];
}
#ifdef USB_DEBUG
if (ehcidebug > 15) {
DPRINTF("isoc FS-TD\n");
ehci_dump_sitd(sc, td);
}
#endif
usb_pc_cpu_invalidate(td->page_cache);
status = hc32toh(sc, td->sitd_status);
len = EHCI_SITD_GET_LEN(status);
DPRINTFN(2, "status=0x%08x, rem=%u\n", status, len);
if (*plen >= len) {
len = *plen - len;
} else {
len = 0;
}
*plen = len;
/* remove FS-TD from schedule */
EHCI_REMOVE_FS_TD(td, *pp_last);
pp_last++;
plen++;
td = td->obj_next;
}
xfer->aframes = xfer->nframes;
}
static void
ehci_isoc_hs_done(ehci_softc_t *sc, struct usb_xfer *xfer)
{
uint32_t nframes = xfer->nframes;
uint32_t status;
uint32_t *plen = xfer->frlengths;
uint16_t len = 0;
uint8_t td_no = 0;
ehci_itd_t *td = xfer->td_transfer_first;
ehci_itd_t **pp_last = &sc->sc_isoc_hs_p_last[xfer->qh_pos];
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
while (nframes) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
if (pp_last >= &sc->sc_isoc_hs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT]) {
pp_last = &sc->sc_isoc_hs_p_last[0];
}
#ifdef USB_DEBUG
if (ehcidebug > 15) {
DPRINTF("isoc HS-TD\n");
ehci_dump_itd(sc, td);
}
#endif
usb_pc_cpu_invalidate(td->page_cache);
status = hc32toh(sc, td->itd_status[td_no]);
len = EHCI_ITD_GET_LEN(status);
DPRINTFN(2, "status=0x%08x, len=%u\n", status, len);
if (xfer->endpoint->usb_smask & (1 << td_no)) {
if (*plen >= len) {
/*
* The length is valid. NOTE: The
* complete length is written back
* into the status field, and not the
* remainder like with other transfer
* descriptor types.
*/
} else {
/* Invalid length - truncate */
len = 0;
}
*plen = len;
plen++;
nframes--;
}
td_no++;
if ((td_no == 8) || (nframes == 0)) {
/* remove HS-TD from schedule */
EHCI_REMOVE_HS_TD(td, *pp_last);
pp_last++;
td_no = 0;
td = td->obj_next;
}
}
xfer->aframes = xfer->nframes;
}
/* NOTE: "done" can be run two times in a row,
* from close and from interrupt
*/
static void
ehci_device_done(struct usb_xfer *xfer, usb_error_t error)
{
const struct usb_pipe_methods *methods = xfer->endpoint->methods;
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
if ((methods == &ehci_device_bulk_methods) ||
(methods == &ehci_device_ctrl_methods)) {
#ifdef USB_DEBUG
if (ehcidebug > 8) {
DPRINTF("nexttog=%d; data after transfer:\n",
xfer->endpoint->toggle_next);
ehci_dump_sqtds(sc,
xfer->td_transfer_first);
}
#endif
EHCI_REMOVE_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_async_p_last);
}
if (methods == &ehci_device_intr_methods) {
EHCI_REMOVE_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_intr_p_last[xfer->qh_pos]);
}
/*
* Only finish isochronous transfers once which will update
* "xfer->frlengths".
*/
if (xfer->td_transfer_first &&
xfer->td_transfer_last) {
if (methods == &ehci_device_isoc_fs_methods) {
ehci_isoc_fs_done(sc, xfer);
}
if (methods == &ehci_device_isoc_hs_methods) {
ehci_isoc_hs_done(sc, xfer);
}
xfer->td_transfer_first = NULL;
xfer->td_transfer_last = NULL;
}
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
/*------------------------------------------------------------------------*
* ehci bulk support
*------------------------------------------------------------------------*/
static void
ehci_device_bulk_open(struct usb_xfer *xfer)
{
return;
}
static void
ehci_device_bulk_close(struct usb_xfer *xfer)
{
ehci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ehci_device_bulk_enter(struct usb_xfer *xfer)
{
return;
}
static void
ehci_doorbell_async(struct ehci_softc *sc)
{
uint32_t temp;
/*
* XXX Performance quirk: Some Host Controllers have a too low
* interrupt rate. Issue an IAAD to stimulate the Host
* Controller after queueing the BULK transfer.
*
* XXX Force the host controller to refresh any QH caches.
*/
temp = EOREAD4(sc, EHCI_USBCMD);
if (!(temp & EHCI_CMD_IAAD))
EOWRITE4(sc, EHCI_USBCMD, temp | EHCI_CMD_IAAD);
}
static void
ehci_device_bulk_start(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ehci_setup_standard_chain(xfer, &sc->sc_async_p_last);
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
/*
* XXX Certain nVidia chipsets choke when using the IAAD
* feature too frequently.
*/
if (sc->sc_flags & EHCI_SCFLG_IAADBUG)
return;
ehci_doorbell_async(sc);
}
static const struct usb_pipe_methods ehci_device_bulk_methods =
{
.open = ehci_device_bulk_open,
.close = ehci_device_bulk_close,
.enter = ehci_device_bulk_enter,
.start = ehci_device_bulk_start,
};
/*------------------------------------------------------------------------*
* ehci control support
*------------------------------------------------------------------------*/
static void
ehci_device_ctrl_open(struct usb_xfer *xfer)
{
return;
}
static void
ehci_device_ctrl_close(struct usb_xfer *xfer)
{
ehci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ehci_device_ctrl_enter(struct usb_xfer *xfer)
{
return;
}
static void
ehci_device_ctrl_start(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ehci_setup_standard_chain(xfer, &sc->sc_async_p_last);
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ehci_device_ctrl_methods =
{
.open = ehci_device_ctrl_open,
.close = ehci_device_ctrl_close,
.enter = ehci_device_ctrl_enter,
.start = ehci_device_ctrl_start,
};
/*------------------------------------------------------------------------*
* ehci interrupt support
*------------------------------------------------------------------------*/
static void
ehci_device_intr_open(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
uint16_t best;
uint16_t bit;
uint16_t x;
usb_hs_bandwidth_alloc(xfer);
/*
* Find the best QH position corresponding to the given interval:
*/
best = 0;
bit = EHCI_VIRTUAL_FRAMELIST_COUNT / 2;
while (bit) {
if (xfer->interval >= bit) {
x = bit;
best = bit;
while (x & bit) {
if (sc->sc_intr_stat[x] <
sc->sc_intr_stat[best]) {
best = x;
}
x++;
}
break;
}
bit >>= 1;
}
sc->sc_intr_stat[best]++;
xfer->qh_pos = best;
DPRINTFN(3, "best=%d interval=%d\n",
best, xfer->interval);
}
static void
ehci_device_intr_close(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
sc->sc_intr_stat[xfer->qh_pos]--;
ehci_device_done(xfer, USB_ERR_CANCELLED);
/* bandwidth must be freed after device done */
usb_hs_bandwidth_free(xfer);
}
static void
ehci_device_intr_enter(struct usb_xfer *xfer)
{
return;
}
static void
ehci_device_intr_start(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ehci_setup_standard_chain(xfer, &sc->sc_intr_p_last[xfer->qh_pos]);
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ehci_device_intr_methods =
{
.open = ehci_device_intr_open,
.close = ehci_device_intr_close,
.enter = ehci_device_intr_enter,
.start = ehci_device_intr_start,
};
/*------------------------------------------------------------------------*
* ehci full speed isochronous support
*------------------------------------------------------------------------*/
static void
ehci_device_isoc_fs_open(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_sitd_t *td;
uint32_t sitd_portaddr;
uint8_t ds;
sitd_portaddr =
EHCI_SITD_SET_ADDR(xfer->address) |
EHCI_SITD_SET_ENDPT(UE_GET_ADDR(xfer->endpointno)) |
EHCI_SITD_SET_HUBA(xfer->xroot->udev->hs_hub_addr) |
EHCI_SITD_SET_PORT(xfer->xroot->udev->hs_port_no);
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN)
sitd_portaddr |= EHCI_SITD_SET_DIR_IN;
sitd_portaddr = htohc32(sc, sitd_portaddr);
/* initialize all TD's */
for (ds = 0; ds != 2; ds++) {
for (td = xfer->td_start[ds]; td; td = td->obj_next) {
td->sitd_portaddr = sitd_portaddr;
/*
* TODO: make some kind of automatic
* SMASK/CMASK selection based on micro-frame
* usage
*
* micro-frame usage (8 microframes per 1ms)
*/
td->sitd_back = htohc32(sc, EHCI_LINK_TERMINATE);
usb_pc_cpu_flush(td->page_cache);
}
}
}
static void
ehci_device_isoc_fs_close(struct usb_xfer *xfer)
{
ehci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ehci_device_isoc_fs_enter(struct usb_xfer *xfer)
{
struct usb_page_search buf_res;
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_sitd_t *td;
ehci_sitd_t *td_last = NULL;
ehci_sitd_t **pp_last;
uint32_t *plen;
uint32_t buf_offset;
uint32_t nframes;
uint32_t temp;
uint32_t sitd_mask;
uint16_t tlen;
uint8_t sa;
uint8_t sb;
#ifdef USB_DEBUG
uint8_t once = 1;
#endif
DPRINTFN(6, "xfer=%p next=%d nframes=%d\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes);
/* get the current frame index */
nframes = EOREAD4(sc, EHCI_FRINDEX) / 8;
/*
* check if the frame index is within the window where the frames
* will be inserted
*/
buf_offset = (nframes - xfer->endpoint->isoc_next) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
if ((xfer->endpoint->is_synced == 0) ||
(buf_offset < xfer->nframes)) {
/*
* If there is data underflow or the pipe queue is empty we
* schedule the transfer a few frames ahead of the current
* frame position. Else two isochronous transfers might
* overlap.
*/
xfer->endpoint->isoc_next = (nframes + 3) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
xfer->endpoint->is_synced = 1;
DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next);
}
/*
* compute how many milliseconds the insertion is ahead of the
* current frame position:
*/
buf_offset = (xfer->endpoint->isoc_next - nframes) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
/*
* pre-compute when the isochronous transfer will be finished:
*/
xfer->isoc_time_complete =
usb_isoc_time_expand(&sc->sc_bus, nframes) +
buf_offset + xfer->nframes;
/* get the real number of frames */
nframes = xfer->nframes;
buf_offset = 0;
plen = xfer->frlengths;
/* toggle the DMA set we are using */
xfer->flags_int.curr_dma_set ^= 1;
/* get next DMA set */
td = xfer->td_start[xfer->flags_int.curr_dma_set];
xfer->td_transfer_first = td;
pp_last = &sc->sc_isoc_fs_p_last[xfer->endpoint->isoc_next];
/* store starting position */
xfer->qh_pos = xfer->endpoint->isoc_next;
while (nframes--) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
if (pp_last >= &sc->sc_isoc_fs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT])
pp_last = &sc->sc_isoc_fs_p_last[0];
/* reuse sitd_portaddr and sitd_back from last transfer */
if (*plen > xfer->max_frame_size) {
#ifdef USB_DEBUG
if (once) {
once = 0;
printf("%s: frame length(%d) exceeds %d "
"bytes (frame truncated)\n",
__FUNCTION__, *plen,
xfer->max_frame_size);
}
#endif
*plen = xfer->max_frame_size;
}
/* allocate a slot */
sa = usbd_fs_isoc_schedule_alloc_slot(xfer,
xfer->isoc_time_complete - nframes - 1);
if (sa == 255) {
/*
* Schedule is FULL, set length to zero:
*/
*plen = 0;
sa = USB_FS_ISOC_UFRAME_MAX - 1;
}
if (*plen) {
/*
* only call "usbd_get_page()" when we have a
* non-zero length
*/
usbd_get_page(xfer->frbuffers, buf_offset, &buf_res);
td->sitd_bp[0] = htohc32(sc, buf_res.physaddr);
buf_offset += *plen;
/*
* NOTE: We need to subtract one from the offset so
* that we are on a valid page!
*/
usbd_get_page(xfer->frbuffers, buf_offset - 1,
&buf_res);
temp = buf_res.physaddr & ~0xFFF;
} else {
td->sitd_bp[0] = 0;
temp = 0;
}
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_OUT) {
tlen = *plen;
if (tlen <= 188) {
temp |= 1; /* T-count = 1, TP = ALL */
tlen = 1;
} else {
tlen += 187;
tlen /= 188;
temp |= tlen; /* T-count = [1..6] */
temp |= 8; /* TP = Begin */
}
tlen += sa;
if (tlen >= 8) {
sb = 0;
} else {
sb = (1 << tlen);
}
sa = (1 << sa);
sa = (sb - sa) & 0x3F;
sb = 0;
} else {
sb = (-(4 << sa)) & 0xFE;
sa = (1 << sa) & 0x3F;
}
sitd_mask = (EHCI_SITD_SET_SMASK(sa) |
EHCI_SITD_SET_CMASK(sb));
td->sitd_bp[1] = htohc32(sc, temp);
td->sitd_mask = htohc32(sc, sitd_mask);
if (nframes == 0) {
td->sitd_status = htohc32(sc,
EHCI_SITD_IOC |
EHCI_SITD_ACTIVE |
EHCI_SITD_SET_LEN(*plen));
} else {
td->sitd_status = htohc32(sc,
EHCI_SITD_ACTIVE |
EHCI_SITD_SET_LEN(*plen));
}
usb_pc_cpu_flush(td->page_cache);
#ifdef USB_DEBUG
if (ehcidebug > 15) {
DPRINTF("FS-TD %d\n", nframes);
ehci_dump_sitd(sc, td);
}
#endif
/* insert TD into schedule */
EHCI_APPEND_FS_TD(td, *pp_last);
pp_last++;
plen++;
td_last = td;
td = td->obj_next;
}
xfer->td_transfer_last = td_last;
/* update isoc_next */
xfer->endpoint->isoc_next = (pp_last - &sc->sc_isoc_fs_p_last[0]) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
/*
* We don't allow cancelling of the SPLIT transaction USB FULL
* speed transfer, because it disturbs the bandwidth
* computation algorithm.
*/
xfer->flags_int.can_cancel_immed = 0;
}
static void
ehci_device_isoc_fs_start(struct usb_xfer *xfer)
{
/*
* We don't allow cancelling of the SPLIT transaction USB FULL
* speed transfer, because it disturbs the bandwidth
* computation algorithm.
*/
xfer->flags_int.can_cancel_immed = 0;
/* set a default timeout */
if (xfer->timeout == 0)
xfer->timeout = 500; /* ms */
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ehci_device_isoc_fs_methods =
{
.open = ehci_device_isoc_fs_open,
.close = ehci_device_isoc_fs_close,
.enter = ehci_device_isoc_fs_enter,
.start = ehci_device_isoc_fs_start,
};
/*------------------------------------------------------------------------*
* ehci high speed isochronous support
*------------------------------------------------------------------------*/
static void
ehci_device_isoc_hs_open(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_itd_t *td;
uint32_t temp;
uint8_t ds;
usb_hs_bandwidth_alloc(xfer);
/* initialize all TD's */
for (ds = 0; ds != 2; ds++) {
for (td = xfer->td_start[ds]; td; td = td->obj_next) {
/* set TD inactive */
td->itd_status[0] = 0;
td->itd_status[1] = 0;
td->itd_status[2] = 0;
td->itd_status[3] = 0;
td->itd_status[4] = 0;
td->itd_status[5] = 0;
td->itd_status[6] = 0;
td->itd_status[7] = 0;
/* set endpoint and address */
td->itd_bp[0] = htohc32(sc,
EHCI_ITD_SET_ADDR(xfer->address) |
EHCI_ITD_SET_ENDPT(UE_GET_ADDR(xfer->endpointno)));
temp =
EHCI_ITD_SET_MPL(xfer->max_packet_size & 0x7FF);
/* set direction */
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) {
temp |= EHCI_ITD_SET_DIR_IN;
}
/* set maximum packet size */
td->itd_bp[1] = htohc32(sc, temp);
/* set transfer multiplier */
td->itd_bp[2] = htohc32(sc, xfer->max_packet_count & 3);
usb_pc_cpu_flush(td->page_cache);
}
}
}
static void
ehci_device_isoc_hs_close(struct usb_xfer *xfer)
{
ehci_device_done(xfer, USB_ERR_CANCELLED);
/* bandwidth must be freed after device done */
usb_hs_bandwidth_free(xfer);
}
static void
ehci_device_isoc_hs_enter(struct usb_xfer *xfer)
{
struct usb_page_search buf_res;
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
ehci_itd_t *td;
ehci_itd_t *td_last = NULL;
ehci_itd_t **pp_last;
bus_size_t page_addr;
uint32_t *plen;
uint32_t status;
uint32_t buf_offset;
uint32_t nframes;
uint32_t itd_offset[8 + 1];
uint8_t x;
uint8_t td_no;
uint8_t page_no;
uint8_t shift = usbd_xfer_get_fps_shift(xfer);
#ifdef USB_DEBUG
uint8_t once = 1;
#endif
DPRINTFN(6, "xfer=%p next=%d nframes=%d shift=%d\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes, (int)shift);
/* get the current frame index */
nframes = EOREAD4(sc, EHCI_FRINDEX) / 8;
/*
* check if the frame index is within the window where the frames
* will be inserted
*/
buf_offset = (nframes - xfer->endpoint->isoc_next) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
if ((xfer->endpoint->is_synced == 0) ||
(buf_offset < (((xfer->nframes << shift) + 7) / 8))) {
/*
* If there is data underflow or the pipe queue is empty we
* schedule the transfer a few frames ahead of the current
* frame position. Else two isochronous transfers might
* overlap.
*/
xfer->endpoint->isoc_next = (nframes + 3) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
xfer->endpoint->is_synced = 1;
DPRINTFN(3, "start next=%d\n", xfer->endpoint->isoc_next);
}
/*
* compute how many milliseconds the insertion is ahead of the
* current frame position:
*/
buf_offset = (xfer->endpoint->isoc_next - nframes) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
/*
* pre-compute when the isochronous transfer will be finished:
*/
xfer->isoc_time_complete =
usb_isoc_time_expand(&sc->sc_bus, nframes) + buf_offset +
(((xfer->nframes << shift) + 7) / 8);
/* get the real number of frames */
nframes = xfer->nframes;
buf_offset = 0;
td_no = 0;
plen = xfer->frlengths;
/* toggle the DMA set we are using */
xfer->flags_int.curr_dma_set ^= 1;
/* get next DMA set */
td = xfer->td_start[xfer->flags_int.curr_dma_set];
xfer->td_transfer_first = td;
pp_last = &sc->sc_isoc_hs_p_last[xfer->endpoint->isoc_next];
/* store starting position */
xfer->qh_pos = xfer->endpoint->isoc_next;
while (nframes) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
if (pp_last >= &sc->sc_isoc_hs_p_last[EHCI_VIRTUAL_FRAMELIST_COUNT]) {
pp_last = &sc->sc_isoc_hs_p_last[0];
}
/* range check */
if (*plen > xfer->max_frame_size) {
#ifdef USB_DEBUG
if (once) {
once = 0;
printf("%s: frame length(%d) exceeds %d bytes "
"(frame truncated)\n",
__FUNCTION__, *plen, xfer->max_frame_size);
}
#endif
*plen = xfer->max_frame_size;
}
if (xfer->endpoint->usb_smask & (1 << td_no)) {
status = (EHCI_ITD_SET_LEN(*plen) |
EHCI_ITD_ACTIVE |
EHCI_ITD_SET_PG(0));
td->itd_status[td_no] = htohc32(sc, status);
itd_offset[td_no] = buf_offset;
buf_offset += *plen;
plen++;
nframes --;
} else {
td->itd_status[td_no] = 0; /* not active */
itd_offset[td_no] = buf_offset;
}
td_no++;
if ((td_no == 8) || (nframes == 0)) {
/* the rest of the transfers are not active, if any */
for (x = td_no; x != 8; x++) {
td->itd_status[x] = 0; /* not active */
}
/* check if there is any data to be transferred */
if (itd_offset[0] != buf_offset) {
page_no = 0;
itd_offset[td_no] = buf_offset;
/* get first page offset */
usbd_get_page(xfer->frbuffers, itd_offset[0], &buf_res);
/* get page address */
page_addr = buf_res.physaddr & ~0xFFF;
/* update page address */
td->itd_bp[0] &= htohc32(sc, 0xFFF);
td->itd_bp[0] |= htohc32(sc, page_addr);
for (x = 0; x != td_no; x++) {
/* set page number and page offset */
status = (EHCI_ITD_SET_PG(page_no) |
(buf_res.physaddr & 0xFFF));
td->itd_status[x] |= htohc32(sc, status);
/* get next page offset */
if (itd_offset[x + 1] == buf_offset) {
/*
* We subtract one so that
* we don't go off the last
* page!
*/
usbd_get_page(xfer->frbuffers, buf_offset - 1, &buf_res);
} else {
usbd_get_page(xfer->frbuffers, itd_offset[x + 1], &buf_res);
}
/* check if we need a new page */
if ((buf_res.physaddr ^ page_addr) & ~0xFFF) {
/* new page needed */
page_addr = buf_res.physaddr & ~0xFFF;
if (page_no == 6) {
panic("%s: too many pages\n", __FUNCTION__);
}
page_no++;
/* update page address */
td->itd_bp[page_no] &= htohc32(sc, 0xFFF);
td->itd_bp[page_no] |= htohc32(sc, page_addr);
}
}
}
/* set IOC bit if we are complete */
if (nframes == 0) {
td->itd_status[td_no - 1] |= htohc32(sc, EHCI_ITD_IOC);
}
usb_pc_cpu_flush(td->page_cache);
#ifdef USB_DEBUG
if (ehcidebug > 15) {
DPRINTF("HS-TD %d\n", nframes);
ehci_dump_itd(sc, td);
}
#endif
/* insert TD into schedule */
EHCI_APPEND_HS_TD(td, *pp_last);
pp_last++;
td_no = 0;
td_last = td;
td = td->obj_next;
}
}
xfer->td_transfer_last = td_last;
/* update isoc_next */
xfer->endpoint->isoc_next = (pp_last - &sc->sc_isoc_hs_p_last[0]) &
(EHCI_VIRTUAL_FRAMELIST_COUNT - 1);
}
static void
ehci_device_isoc_hs_start(struct usb_xfer *xfer)
{
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ehci_device_isoc_hs_methods =
{
.open = ehci_device_isoc_hs_open,
.close = ehci_device_isoc_hs_close,
.enter = ehci_device_isoc_hs_enter,
.start = ehci_device_isoc_hs_start,
};
/*------------------------------------------------------------------------*
* ehci root control support
*------------------------------------------------------------------------*
* Simulate a hardware hub by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const
struct usb_device_descriptor ehci_devd =
{
sizeof(struct usb_device_descriptor),
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 indexes */
1 /* # of configurations */
};
static const
struct usb_device_qualifier ehci_odevd =
{
sizeof(struct usb_device_qualifier),
UDESC_DEVICE_QUALIFIER, /* type */
{0x00, 0x02}, /* USB version */
UDCLASS_HUB, /* class */
UDSUBCLASS_HUB, /* subclass */
UDPROTO_FSHUB, /* protocol */
0, /* max packet */
0, /* # of configurations */
0
};
static const struct ehci_config_desc ehci_confd = {
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(ehci_confd),
.bNumInterface = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = UC_SELF_POWERED,
.bMaxPower = 0 /* max power */
},
.ifcd = {
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = UDESC_INTERFACE,
.bNumEndpoints = 1,
.bInterfaceClass = UICLASS_HUB,
.bInterfaceSubClass = UISUBCLASS_HUB,
.bInterfaceProtocol = 0,
},
.endpd = {
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = UDESC_ENDPOINT,
.bEndpointAddress = UE_DIR_IN | EHCI_INTR_ENDPT,
.bmAttributes = UE_INTERRUPT,
.wMaxPacketSize[0] = 8, /* max packet (63 ports) */
.bInterval = 255,
},
};
static const
struct usb_hub_descriptor ehci_hubd =
{
.bDescLength = 0, /* dynamic length */
.bDescriptorType = UDESC_HUB,
};
uint16_t
ehci_get_port_speed_portsc(struct ehci_softc *sc, uint16_t index)
{
uint32_t v;
v = EOREAD4(sc, EHCI_PORTSC(index));
v = (v >> EHCI_PORTSC_PSPD_SHIFT) & EHCI_PORTSC_PSPD_MASK;
if (v == EHCI_PORT_SPEED_HIGH)
return (UPS_HIGH_SPEED);
if (v == EHCI_PORT_SPEED_LOW)
return (UPS_LOW_SPEED);
return (0);
}
uint16_t
ehci_get_port_speed_hostc(struct ehci_softc *sc, uint16_t index)
{
uint32_t v;
v = EOREAD4(sc, EHCI_HOSTC(index));
v = (v >> EHCI_HOSTC_PSPD_SHIFT) & EHCI_HOSTC_PSPD_MASK;
if (v == EHCI_PORT_SPEED_HIGH)
return (UPS_HIGH_SPEED);
if (v == EHCI_PORT_SPEED_LOW)
return (UPS_LOW_SPEED);
return (0);
}
static void
ehci_disown(ehci_softc_t *sc, uint16_t index, uint8_t lowspeed)
{
uint32_t port;
uint32_t v;
DPRINTF("index=%d lowspeed=%d\n", index, lowspeed);
port = EHCI_PORTSC(index);
v = EOREAD4(sc, port) & ~EHCI_PS_CLEAR;
EOWRITE4(sc, port, v | EHCI_PS_PO);
}
static usb_error_t
ehci_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
ehci_softc_t *sc = EHCI_BUS2SC(udev->bus);
const char *str_ptr;
const void *ptr;
uint32_t port;
uint32_t v;
uint16_t len;
uint16_t i;
uint16_t value;
uint16_t index;
usb_error_t err;
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* buffer reset */
ptr = (const void *)&sc->sc_hub_desc;
len = 0;
err = 0;
value = UGETW(req->wValue);
index = UGETW(req->wIndex);
DPRINTFN(3, "type=0x%02x request=0x%02x wLen=0x%04x "
"wValue=0x%04x wIndex=0x%04x\n",
req->bmRequestType, req->bRequest,
UGETW(req->wLength), value, index);
#define C(x,y) ((x) | ((y) << 8))
switch (C(req->bRequest, req->bmRequestType)) {
case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
/*
* DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
* for the integrated root hub.
*/
break;
case C(UR_GET_CONFIG, UT_READ_DEVICE):
len = 1;
sc->sc_hub_desc.temp[0] = sc->sc_conf;
break;
case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
switch (value >> 8) {
case UDESC_DEVICE:
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
len = sizeof(ehci_devd);
ptr = (const void *)&ehci_devd;
break;
/*
* We can't really operate at another speed,
* but the specification says we need this
* descriptor:
*/
case UDESC_DEVICE_QUALIFIER:
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
len = sizeof(ehci_odevd);
ptr = (const void *)&ehci_odevd;
break;
case UDESC_CONFIG:
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
len = sizeof(ehci_confd);
ptr = (const void *)&ehci_confd;
break;
case UDESC_STRING:
switch (value & 0xff) {
case 0: /* Language table */
str_ptr = "\001";
break;
case 1: /* Vendor */
str_ptr = sc->sc_vendor;
break;
case 2: /* Product */
str_ptr = "EHCI root HUB";
break;
default:
str_ptr = "";
break;
}
len = usb_make_str_desc(
sc->sc_hub_desc.temp,
sizeof(sc->sc_hub_desc.temp),
str_ptr);
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
break;
case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
len = 1;
sc->sc_hub_desc.temp[0] = 0;
break;
case C(UR_GET_STATUS, UT_READ_DEVICE):
len = 2;
USETW(sc->sc_hub_desc.stat.wStatus, UDS_SELF_POWERED);
break;
case C(UR_GET_STATUS, UT_READ_INTERFACE):
case C(UR_GET_STATUS, UT_READ_ENDPOINT):
len = 2;
USETW(sc->sc_hub_desc.stat.wStatus, 0);
break;
case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
if (value >= EHCI_MAX_DEVICES) {
err = USB_ERR_IOERROR;
goto done;
}
sc->sc_addr = value;
break;
case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
if ((value != 0) && (value != 1)) {
err = USB_ERR_IOERROR;
goto done;
}
sc->sc_conf = value;
break;
case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
break;
case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
err = USB_ERR_IOERROR;
goto done;
case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
break;
case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
break;
/* Hub requests */
case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
break;
case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
DPRINTFN(9, "UR_CLEAR_PORT_FEATURE\n");
if ((index < 1) ||
(index > sc->sc_noport)) {
err = USB_ERR_IOERROR;
goto done;
}
port = 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:
if ((v & EHCI_PS_SUSP) && (!(v & EHCI_PS_FPR))) {
/*
* waking up a High Speed device is rather
* complicated if
*/
EOWRITE4(sc, port, v | EHCI_PS_FPR);
}
/* wait 20ms for resume sequence to complete */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 50);
EOWRITE4(sc, port, v & ~(EHCI_PS_SUSP |
EHCI_PS_FPR | (3 << 10) /* High Speed */ ));
/* 4ms settle time */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 250);
break;
case UHF_PORT_POWER:
EOWRITE4(sc, port, v & ~EHCI_PS_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(3, "clear port test "
"%d\n", index);
break;
case UHF_PORT_INDICATOR:
DPRINTFN(3, "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:
EOWRITE4(sc, port, v | EHCI_PS_SUSP);
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 = USB_ERR_IOERROR;
goto done;
}
break;
case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
v = EREAD4(sc, EHCI_HCSPARAMS);
sc->sc_hub_desc.hubd = ehci_hubd;
sc->sc_hub_desc.hubd.bNbrPorts = sc->sc_noport;
if (EHCI_HCS_PPC(v))
i = UHD_PWR_INDIVIDUAL;
else
i = UHD_PWR_NO_SWITCH;
if (EHCI_HCS_P_INDICATOR(v))
i |= UHD_PORT_IND;
USETW(sc->sc_hub_desc.hubd.wHubCharacteristics, i);
/* XXX can't find out? */
sc->sc_hub_desc.hubd.bPwrOn2PwrGood = 200;
/* XXX don't know if ports are removable or not */
sc->sc_hub_desc.hubd.bDescLength =
8 + ((sc->sc_noport + 7) / 8);
len = sc->sc_hub_desc.hubd.bDescLength;
break;
case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
len = 16;
memset(sc->sc_hub_desc.temp, 0, 16);
break;
case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
DPRINTFN(9, "get port status i=%d\n",
index);
if ((index < 1) ||
(index > sc->sc_noport)) {
err = USB_ERR_IOERROR;
goto done;
}
v = EOREAD4(sc, EHCI_PORTSC(index));
DPRINTFN(9, "port status=0x%04x\n", v);
if (sc->sc_flags & EHCI_SCFLG_TT) {
if (sc->sc_vendor_get_port_speed != NULL) {
i = sc->sc_vendor_get_port_speed(sc, index);
} else {
device_printf(sc->sc_bus.bdev,
"EHCI_SCFLG_TT quirk is set but "
"sc_vendor_get_hub_speed() is NULL\n");
i = UPS_HIGH_SPEED;
}
} else {
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) && !(v & EHCI_PS_FPR))
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(sc->sc_hub_desc.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 (v & EHCI_PS_FPR)
i |= UPS_C_SUSPEND;
if (sc->sc_isreset)
i |= UPS_C_PORT_RESET;
USETW(sc->sc_hub_desc.ps.wPortChange, i);
len = sizeof(sc->sc_hub_desc.ps);
break;
case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
err = USB_ERR_IOERROR;
goto done;
case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
break;
case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
if ((index < 1) ||
(index > sc->sc_noport)) {
err = USB_ERR_IOERROR;
goto done;
}
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(6, "reset port %d\n", index);
#ifdef USB_DEBUG
if (ehcinohighspeed) {
/*
* Connect USB device to companion
* controller.
*/
ehci_disown(sc, index, 1);
break;
}
#endif
if (EHCI_PS_IS_LOWSPEED(v) &&
(sc->sc_flags & EHCI_SCFLG_TT) == 0) {
/* Low speed device, give up ownership. */
ehci_disown(sc, index, 1);
break;
}
/* Start reset sequence. */
v &= ~(EHCI_PS_PE | EHCI_PS_PR);
EOWRITE4(sc, port, v | EHCI_PS_PR);
/* Wait for reset to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx,
USB_MS_TO_TICKS(usb_port_root_reset_delay));
/* Terminate reset sequence. */
if (!(sc->sc_flags & EHCI_SCFLG_NORESTERM))
EOWRITE4(sc, port, v);
/* Wait for HC to complete reset. */
usb_pause_mtx(&sc->sc_bus.bus_mtx,
USB_MS_TO_TICKS(EHCI_PORT_RESET_COMPLETE));
v = EOREAD4(sc, port);
DPRINTF("ehci after reset, status=0x%08x\n", v);
if (v & EHCI_PS_PR) {
device_printf(sc->sc_bus.bdev,
"port reset timeout\n");
err = USB_ERR_TIMEOUT;
goto done;
}
if (!(v & EHCI_PS_PE) &&
(sc->sc_flags & EHCI_SCFLG_TT) == 0) {
/* Not a high speed device, give up ownership.*/
ehci_disown(sc, index, 0);
break;
}
sc->sc_isreset = 1;
DPRINTF("ehci port %d reset, status = 0x%08x\n",
index, v);
break;
case UHF_PORT_POWER:
DPRINTFN(3, "set port power %d\n", index);
EOWRITE4(sc, port, v | EHCI_PS_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(3, "set port test %d\n", index);
break;
case UHF_PORT_INDICATOR:
DPRINTFN(3, "set port ind %d\n", index);
EOWRITE4(sc, port, v | EHCI_PS_PIC);
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
break;
case C(UR_CLEAR_TT_BUFFER, UT_WRITE_CLASS_OTHER):
case C(UR_RESET_TT, UT_WRITE_CLASS_OTHER):
case C(UR_GET_TT_STATE, UT_READ_CLASS_OTHER):
case C(UR_STOP_TT, UT_WRITE_CLASS_OTHER):
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
done:
*plength = len;
*pptr = ptr;
return (err);
}
static void
ehci_xfer_setup(struct usb_setup_params *parm)
{
struct usb_page_search page_info;
struct usb_page_cache *pc;
ehci_softc_t *sc;
struct usb_xfer *xfer;
void *last_obj;
uint32_t nqtd;
uint32_t nqh;
uint32_t nsitd;
uint32_t nitd;
uint32_t n;
sc = EHCI_BUS2SC(parm->udev->bus);
xfer = parm->curr_xfer;
nqtd = 0;
nqh = 0;
nsitd = 0;
nitd = 0;
/*
* compute maximum number of some structures
*/
if (parm->methods == &ehci_device_ctrl_methods) {
/*
* The proof for the "nqtd" formula is illustrated like
* this:
*
* +------------------------------------+
* | |
* | |remainder -> |
* | +-----+---+ |
* | | xxx | x | frm 0 |
* | +-----+---++ |
* | | xxx | xx | frm 1 |
* | +-----+----+ |
* | ... |
* +------------------------------------+
*
* "xxx" means a completely full USB transfer descriptor
*
* "x" and "xx" means a short USB packet
*
* For the remainder of an USB transfer modulo
* "max_data_length" we need two USB transfer descriptors.
* One to transfer the remaining data and one to finalise
* with a zero length packet in case the "force_short_xfer"
* flag is set. We only need two USB transfer descriptors in
* the case where the transfer length of the first one is a
* factor of "max_frame_size". The rest of the needed USB
* transfer descriptors is given by the buffer size divided
* by the maximum data payload.
*/
parm->hc_max_packet_size = 0x400;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = EHCI_QTD_PAYLOAD_MAX;
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nqh = 1;
nqtd = ((2 * xfer->nframes) + 1 /* STATUS */
+ (xfer->max_data_length / xfer->max_hc_frame_size));
} else if (parm->methods == &ehci_device_bulk_methods) {
parm->hc_max_packet_size = 0x400;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = EHCI_QTD_PAYLOAD_MAX;
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nqh = 1;
nqtd = ((2 * xfer->nframes)
+ (xfer->max_data_length / xfer->max_hc_frame_size));
} else if (parm->methods == &ehci_device_intr_methods) {
if (parm->speed == USB_SPEED_HIGH) {
parm->hc_max_packet_size = 0x400;
parm->hc_max_packet_count = 3;
} else if (parm->speed == USB_SPEED_FULL) {
parm->hc_max_packet_size = USB_FS_BYTES_PER_HS_UFRAME;
parm->hc_max_packet_count = 1;
} else {
parm->hc_max_packet_size = USB_FS_BYTES_PER_HS_UFRAME / 8;
parm->hc_max_packet_count = 1;
}
parm->hc_max_frame_size = EHCI_QTD_PAYLOAD_MAX;
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nqh = 1;
nqtd = ((2 * xfer->nframes)
+ (xfer->max_data_length / xfer->max_hc_frame_size));
} else if (parm->methods == &ehci_device_isoc_fs_methods) {
parm->hc_max_packet_size = 0x3FF;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = 0x3FF;
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nsitd = xfer->nframes;
} else if (parm->methods == &ehci_device_isoc_hs_methods) {
parm->hc_max_packet_size = 0x400;
parm->hc_max_packet_count = 3;
parm->hc_max_frame_size = 0xC00;
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nitd = ((xfer->nframes + 7) / 8) <<
usbd_xfer_get_fps_shift(xfer);
} else {
parm->hc_max_packet_size = 0x400;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = 0x400;
usbd_transfer_setup_sub(parm);
}
alloc_dma_set:
if (parm->err) {
return;
}
/*
* Allocate queue heads and transfer descriptors
*/
last_obj = NULL;
if (usbd_transfer_setup_sub_malloc(
parm, &pc, sizeof(ehci_itd_t),
EHCI_ITD_ALIGN, nitd)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nitd; n++) {
ehci_itd_t *td;
usbd_get_page(pc + n, 0, &page_info);
td = page_info.buffer;
/* init TD */
td->itd_self = htohc32(sc, page_info.physaddr | EHCI_LINK_ITD);
td->obj_next = last_obj;
td->page_cache = pc + n;
last_obj = td;
usb_pc_cpu_flush(pc + n);
}
}
if (usbd_transfer_setup_sub_malloc(
parm, &pc, sizeof(ehci_sitd_t),
EHCI_SITD_ALIGN, nsitd)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nsitd; n++) {
ehci_sitd_t *td;
usbd_get_page(pc + n, 0, &page_info);
td = page_info.buffer;
/* init TD */
td->sitd_self = htohc32(sc, page_info.physaddr | EHCI_LINK_SITD);
td->obj_next = last_obj;
td->page_cache = pc + n;
last_obj = td;
usb_pc_cpu_flush(pc + n);
}
}
if (usbd_transfer_setup_sub_malloc(
parm, &pc, sizeof(ehci_qtd_t),
EHCI_QTD_ALIGN, nqtd)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nqtd; n++) {
ehci_qtd_t *qtd;
usbd_get_page(pc + n, 0, &page_info);
qtd = page_info.buffer;
/* init TD */
qtd->qtd_self = htohc32(sc, page_info.physaddr);
qtd->obj_next = last_obj;
qtd->page_cache = pc + n;
last_obj = qtd;
usb_pc_cpu_flush(pc + n);
}
}
xfer->td_start[xfer->flags_int.curr_dma_set] = last_obj;
last_obj = NULL;
if (usbd_transfer_setup_sub_malloc(
parm, &pc, sizeof(ehci_qh_t),
EHCI_QH_ALIGN, nqh)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nqh; n++) {
ehci_qh_t *qh;
usbd_get_page(pc + n, 0, &page_info);
qh = page_info.buffer;
/* init QH */
qh->qh_self = htohc32(sc, page_info.physaddr | EHCI_LINK_QH);
qh->obj_next = last_obj;
qh->page_cache = pc + n;
last_obj = qh;
usb_pc_cpu_flush(pc + n);
}
}
xfer->qh_start[xfer->flags_int.curr_dma_set] = last_obj;
if (!xfer->flags_int.curr_dma_set) {
xfer->flags_int.curr_dma_set = 1;
goto alloc_dma_set;
}
}
static void
ehci_xfer_unsetup(struct usb_xfer *xfer)
{
return;
}
static void
ehci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
ehci_softc_t *sc = EHCI_BUS2SC(udev->bus);
DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d (%d)\n",
ep, udev->address,
edesc->bEndpointAddress, udev->flags.usb_mode,
sc->sc_addr);
if (udev->device_index != sc->sc_addr) {
if ((udev->speed != USB_SPEED_HIGH) &&
((udev->hs_hub_addr == 0) ||
(udev->hs_port_no == 0) ||
(udev->parent_hs_hub == NULL) ||
(udev->parent_hs_hub->hub == NULL))) {
/* We need a transaction translator */
goto done;
}
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_CONTROL:
ep->methods = &ehci_device_ctrl_methods;
break;
case UE_INTERRUPT:
ep->methods = &ehci_device_intr_methods;
break;
case UE_ISOCHRONOUS:
if (udev->speed == USB_SPEED_HIGH) {
ep->methods = &ehci_device_isoc_hs_methods;
} else if (udev->speed == USB_SPEED_FULL) {
ep->methods = &ehci_device_isoc_fs_methods;
}
break;
case UE_BULK:
ep->methods = &ehci_device_bulk_methods;
break;
default:
/* do nothing */
break;
}
}
done:
return;
}
static void
ehci_get_dma_delay(struct usb_device *udev, uint32_t *pus)
{
/*
* Wait until the hardware has finished any possible use of
* the transfer descriptor(s) and QH
*/
*pus = (1125); /* microseconds */
}
static void
ehci_device_resume(struct usb_device *udev)
{
ehci_softc_t *sc = EHCI_BUS2SC(udev->bus);
struct usb_xfer *xfer;
const struct usb_pipe_methods *methods;
DPRINTF("\n");
USB_BUS_LOCK(udev->bus);
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (xfer->xroot->udev == udev) {
methods = xfer->endpoint->methods;
if ((methods == &ehci_device_bulk_methods) ||
(methods == &ehci_device_ctrl_methods)) {
EHCI_APPEND_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_async_p_last);
}
if (methods == &ehci_device_intr_methods) {
EHCI_APPEND_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_intr_p_last[xfer->qh_pos]);
}
}
}
USB_BUS_UNLOCK(udev->bus);
return;
}
static void
ehci_device_suspend(struct usb_device *udev)
{
ehci_softc_t *sc = EHCI_BUS2SC(udev->bus);
struct usb_xfer *xfer;
const struct usb_pipe_methods *methods;
DPRINTF("\n");
USB_BUS_LOCK(udev->bus);
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (xfer->xroot->udev == udev) {
methods = xfer->endpoint->methods;
if ((methods == &ehci_device_bulk_methods) ||
(methods == &ehci_device_ctrl_methods)) {
EHCI_REMOVE_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_async_p_last);
}
if (methods == &ehci_device_intr_methods) {
EHCI_REMOVE_QH(xfer->qh_start[xfer->flags_int.curr_dma_set],
sc->sc_intr_p_last[xfer->qh_pos]);
}
}
}
USB_BUS_UNLOCK(udev->bus);
}
static void
ehci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct ehci_softc *sc = EHCI_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
case USB_HW_POWER_SHUTDOWN:
ehci_suspend(sc);
break;
case USB_HW_POWER_RESUME:
ehci_resume(sc);
break;
default:
break;
}
}
static void
ehci_set_hw_power(struct usb_bus *bus)
{
ehci_softc_t *sc = EHCI_BUS2SC(bus);
uint32_t temp;
uint32_t flags;
DPRINTF("\n");
USB_BUS_LOCK(bus);
flags = bus->hw_power_state;
temp = EOREAD4(sc, EHCI_USBCMD);
temp &= ~(EHCI_CMD_ASE | EHCI_CMD_PSE);
if (flags & (USB_HW_POWER_CONTROL |
USB_HW_POWER_BULK)) {
DPRINTF("Async is active\n");
temp |= EHCI_CMD_ASE;
}
if (flags & (USB_HW_POWER_INTERRUPT |
USB_HW_POWER_ISOC)) {
DPRINTF("Periodic is active\n");
temp |= EHCI_CMD_PSE;
}
EOWRITE4(sc, EHCI_USBCMD, temp);
USB_BUS_UNLOCK(bus);
return;
}
static void
ehci_start_dma_delay_second(struct usb_xfer *xfer)
{
struct ehci_softc *sc = EHCI_BUS2SC(xfer->xroot->bus);
DPRINTF("\n");
/* trigger doorbell */
ehci_doorbell_async(sc);
/* give the doorbell 4ms */
usbd_transfer_timeout_ms(xfer,
(void (*)(void *))&usb_dma_delay_done_cb, 4);
}
/*
* Ring the doorbell twice before freeing any DMA descriptors. Some host
* controllers apparently cache the QH descriptors and need a message
* that the cache needs to be discarded.
*/
static void
ehci_start_dma_delay(struct usb_xfer *xfer)
{
struct ehci_softc *sc = EHCI_BUS2SC(xfer->xroot->bus);
DPRINTF("\n");
/* trigger doorbell */
ehci_doorbell_async(sc);
/* give the doorbell 4ms */
usbd_transfer_timeout_ms(xfer,
(void (*)(void *))&ehci_start_dma_delay_second, 4);
}
static const struct usb_bus_methods ehci_bus_methods =
{
.endpoint_init = ehci_ep_init,
.xfer_setup = ehci_xfer_setup,
.xfer_unsetup = ehci_xfer_unsetup,
.get_dma_delay = ehci_get_dma_delay,
.device_resume = ehci_device_resume,
.device_suspend = ehci_device_suspend,
.set_hw_power = ehci_set_hw_power,
.set_hw_power_sleep = ehci_set_hw_power_sleep,
.roothub_exec = ehci_roothub_exec,
.xfer_poll = ehci_do_poll,
.start_dma_delay = ehci_start_dma_delay,
};
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