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freebsd-nq/sys/dev/usb/controller/ehci.c
Andrew Thompson a4cadedb58 Add support for LOW speed BULK transfers. This mode is not recommended by the 
USB 2.0 standard, though some USB devices use it anyway.

Submitted by:	Hans Petter Selasky
2010-06-22 20:57:48 +00:00

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/*-
* 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
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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/linker_set.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>
#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;
SYSCTL_NODE(_hw_usb, OID_AUTO, ehci, CTLFLAG_RW, 0, "USB ehci");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, debug, CTLFLAG_RW,
&ehcidebug, 0, "Debug level");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, no_hs, CTLFLAG_RW,
&ehcinohighspeed, 0, "Disable High Speed USB");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, iaadbug, CTLFLAG_RW,
&ehciiaadbug, 0, "Enable doorbell bug workaround");
SYSCTL_INT(_hw_usb_ehci, OID_AUTO, lostintrbug, CTLFLAG_RW,
&ehcilostintrbug, 0, "Enable lost interrupt bug workaround");
TUNABLE_INT("hw.usb.ehci.debug", &ehcidebug);
TUNABLE_INT("hw.usb.ehci.no_hs", &ehcinohighspeed);
TUNABLE_INT("hw.usb.ehci.iaadbug", &ehciiaadbug);
TUNABLE_INT("hw.usb.ehci.lostintrbug", &ehcilostintrbug);
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
extern struct usb_bus_methods ehci_bus_methods;
extern struct usb_pipe_methods ehci_device_bulk_methods;
extern struct usb_pipe_methods ehci_device_ctrl_methods;
extern struct usb_pipe_methods ehci_device_intr_methods;
extern struct usb_pipe_methods ehci_device_isoc_fs_methods;
extern 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;
uint8_t can_use_next;
};
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.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 / 1000);
hcr = EOREAD4(sc, EHCI_USBCMD) & EHCI_CMD_HCRESET;
if (!hcr) {
if (sc->sc_flags & (EHCI_SCFLG_SETMODE | EHCI_SCFLG_BIGEMMIO)) {
/*
* Force USBMODE as requested. Controllers
* may have multiple operating modes.
*/
uint32_t usbmode = EOREAD4(sc, EHCI_USBMODE);
if (sc->sc_flags & EHCI_SCFLG_SETMODE) {
usbmode = (usbmode &~ EHCI_UM_CM) | EHCI_UM_CM_HOST;
device_printf(sc->sc_bus.bdev,
"set host controller mode\n");
}
if (sc->sc_flags & EHCI_SCFLG_BIGEMMIO) {
usbmode = (usbmode &~ EHCI_UM_ES) | EHCI_UM_ES_BE;
device_printf(sc->sc_bus.bdev,
"set big-endian mode\n");
}
EOWRITE4(sc, EHCI_USBMODE, usbmode);
}
return (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 / 1000);
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);
}
usb_error_t
ehci_init(ehci_softc_t *sc)
{
struct usb_page_search buf_res;
uint32_t version;
uint32_t sparams;
uint32_t cparams;
uint32_t hcr;
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);
#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
sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
version = EREAD2(sc, EHCI_HCIVERSION);
device_printf(sc->sc_bus.bdev, "EHCI version %x.%x\n",
version >> 8, version & 0xff);
sparams = EREAD4(sc, EHCI_HCSPARAMS);
DPRINTF("sparams=0x%x\n", sparams);
sc->sc_noport = EHCI_HCS_N_PORTS(sparams);
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 */
EWRITE4(sc, EHCI_CTRLDSSEGMENT, 0);
}
sc->sc_bus.usbrev = USB_REV_2_0;
/* 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;
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;
}
}
/* setup sync list pointer */
EOWRITE4(sc, EHCI_PERIODICLISTBASE, buf_res.physaddr);
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
/* setup async list pointer */
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 / 1000);
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);
}
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);
}
void
ehci_suspend(ehci_softc_t *sc)
{
uint32_t cmd;
uint32_t hcr;
uint8_t i;
USB_BUS_LOCK(&sc->sc_bus);
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if (((cmd & EHCI_PS_PO) == 0) &&
((cmd & EHCI_PS_PE) == EHCI_PS_PE)) {
EOWRITE4(sc, EHCI_PORTSC(i),
cmd | EHCI_PS_SUSP);
}
}
sc->sc_cmd = EOREAD4(sc, EHCI_USBCMD);
cmd = sc->sc_cmd & ~(EHCI_CMD_ASE | EHCI_CMD_PSE);
EOWRITE4(sc, EHCI_USBCMD, cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) &
(EHCI_STS_ASS | EHCI_STS_PSS);
if (hcr == 0) {
break;
}
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 1000);
}
if (hcr != 0) {
device_printf(sc->sc_bus.bdev, "reset timeout\n");
}
cmd &= ~EHCI_CMD_RS;
EOWRITE4(sc, EHCI_USBCMD, cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr == EHCI_STS_HCH) {
break;
}
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 1000);
}
if (hcr != EHCI_STS_HCH) {
device_printf(sc->sc_bus.bdev,
"config timeout\n");
}
USB_BUS_UNLOCK(&sc->sc_bus);
}
void
ehci_resume(ehci_softc_t *sc)
{
struct usb_page_search buf_res;
uint32_t cmd;
uint32_t hcr;
uint8_t i;
USB_BUS_LOCK(&sc->sc_bus);
/* restore things in case the bios doesn't */
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);
EOWRITE4(sc, EHCI_USBINTR, sc->sc_eintrs);
hcr = 0;
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if (((cmd & EHCI_PS_PO) == 0) &&
((cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP)) {
EOWRITE4(sc, EHCI_PORTSC(i),
cmd | EHCI_PS_FPR);
hcr = 1;
}
}
if (hcr) {
usb_pause_mtx(&sc->sc_bus.bus_mtx,
USB_MS_TO_TICKS(USB_RESUME_WAIT));
for (i = 1; i <= sc->sc_noport; i++) {
cmd = EOREAD4(sc, EHCI_PORTSC(i));
if (((cmd & EHCI_PS_PO) == 0) &&
((cmd & EHCI_PS_SUSP) == EHCI_PS_SUSP)) {
EOWRITE4(sc, EHCI_PORTSC(i),
cmd & ~EHCI_PS_FPR);
}
}
}
EOWRITE4(sc, EHCI_USBCMD, sc->sc_cmd);
for (i = 0; i < 100; i++) {
hcr = EOREAD4(sc, EHCI_USBSTS) & EHCI_STS_HCH;
if (hcr != EHCI_STS_HCH) {
break;
}
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 1000);
}
if (hcr == EHCI_STS_HCH) {
device_printf(sc->sc_bus.bdev, "config timeout\n");
}
USB_BUS_UNLOCK(&sc->sc_bus);
usb_pause_mtx(NULL,
USB_MS_TO_TICKS(USB_RESUME_WAIT));
/* catch any lost interrupts */
ehci_do_poll(&sc->sc_bus);
}
void
ehci_shutdown(ehci_softc_t *sc)
{
DPRINTF("stopping the HC\n");
if (ehci_hcreset(sc)) {
DPRINTF("reset failed!\n");
}
}
#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 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;
}
/* 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
return ((status & EHCI_QTD_HALTED) ?
USB_ERR_STALLED : 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);
xfer->endpoint->toggle_next =
(status & EHCI_QTD_TOGGLE_MASK) ? 1 : 0;
/* 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)
{
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 */
if (xfer->td_transfer_cache != td) {
xfer->td_transfer_cache = td;
if (qh->qh_qtd.qtd_next &
htohc32(sc, EHCI_LINK_TERMINATE)) {
/* XXX - manually advance to next frame */
qh->qh_qtd.qtd_next = td->qtd_self;
usb_pc_cpu_flush(td->page_cache);
}
}
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;
uint8_t shortpkt_old;
uint8_t precompute;
terminate = htohc32(temp->sc, EHCI_LINK_TERMINATE);
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;
td->qtd_buffer[0] = 0;
td->qtd_buffer_hi[0] = 0;
td->qtd_buffer[1] = 0;
td->qtd_buffer_hi[1] = 0;
} else {
uint8_t x;
if (temp->auto_data_toggle == 0) {
/* update data toggle */
if (((average + temp->max_frame_size - 1) /
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;
}
if (temp->can_use_next) {
if (td_next) {
/* link the current TD with the next one */
td->qtd_next = td_next->qtd_self;
}
} else {
/*
* BUG WARNING: The EHCI HW can use the
* qtd_next field instead of qtd_altnext when
* a short packet is received! We work this
* around in software by not queueing more
* than one job/TD at a time!
*/
td->qtd_next = terminate;
}
td->qtd_altnext = terminate;
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;
} else {
/* we use this field internally */
td_alt_next = td_next;
}
/* 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;
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;
temp.can_use_next = (xfer->flags_int.control_xfr ||
(UE_GET_DIR(xfer->endpointno) == UE_DIR_OUT));
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 (usbd_get_speed(xfer->xroot->udev) != USB_SPEED_HIGH) {
/* 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) {
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);
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)
{
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_device_bulk_start(struct usb_xfer *xfer)
{
ehci_softc_t *sc = EHCI_BUS2SC(xfer->xroot->bus);
uint32_t temp;
/* 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;
/* 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.
*/
temp = EOREAD4(sc, EHCI_USBCMD);
if (!(temp & EHCI_CMD_IAAD))
EOWRITE4(sc, EHCI_USBCMD, temp | EHCI_CMD_IAAD);
}
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);
}
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);
}
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);
struct usb_fs_isoc_schedule *fss_start;
struct usb_fs_isoc_schedule *fss_end;
struct usb_fs_isoc_schedule *fss;
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;
uint8_t error;
#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 =
usbd_fs_isoc_schedule_isoc_time_expand
(xfer->xroot->udev, &fss_start, &fss_end, 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;
fss = fss_start + (xfer->qh_pos % USB_ISOC_TIME_MAX);
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];
}
if (fss >= fss_end) {
fss = fss_start;
}
/* 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;
}
/*
* We currently don't care if the ISOCHRONOUS schedule is
* full!
*/
error = usbd_fs_isoc_schedule_alloc(fss, &sa, *plen);
if (error) {
/*
* The FULL speed schedule is FULL! Set length
* to zero.
*/
*plen = 0;
}
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++;
fss++;
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);
}
static void
ehci_device_isoc_fs_start(struct usb_xfer *xfer)
{
/* put transfer on interrupt queue */
ehci_transfer_intr_enqueue(xfer);
}
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);
}
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 indicies */
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 = UIPROTO_HSHUBSTT,
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 =
{
0, /* dynamic length */
UDESC_HUB,
0,
{0, 0},
0,
0,
{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;
uint8_t l;
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 = EOREAD4(sc, EHCI_HCSPARAMS);
sc->sc_hub_desc.hubd = ehci_hubd;
sc->sc_hub_desc.hubd.bNbrPorts = sc->sc_noport;
USETW(sc->sc_hub_desc.hubd.wHubCharacteristics,
(EHCI_HCS_PPC(v) ? UHD_PWR_INDIVIDUAL : UHD_PWR_NO_SWITCH) |
(EHCI_HCS_P_INDICATOR(EREAD4(sc, EHCI_HCSPARAMS)) ?
UHD_PORT_IND : 0));
/* XXX can't find out? */
sc->sc_hub_desc.hubd.bPwrOn2PwrGood = 200;
for (l = 0; l < sc->sc_noport; l++) {
/* XXX can't find out? */
sc->sc_hub_desc.hubd.DeviceRemovable[l / 8] &= ~(1 << (l % 8));
}
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;
bzero(sc->sc_hub_desc.temp, 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_FORCESPEED | EHCI_SCFLG_TT)) {
if ((v & 0xc000000) == 0x8000000)
i = UPS_HIGH_SPEED;
else if ((v & 0xc000000) == 0x4000000)
i = UPS_LOW_SPEED;
else
i = 0;
} 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->flags.usb_mode != USB_MODE_HOST) {
/* not supported */
return;
}
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_bus *bus, uint32_t *pus)
{
/*
* Wait until the hardware has finished any possible use of
* the transfer descriptor(s) and QH
*/
*pus = (188); /* microseconds */
}
static void
ehci_device_resume(struct usb_device *udev)
{
ehci_softc_t *sc = EHCI_BUS2SC(udev->bus);
struct usb_xfer *xfer;
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;
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);
return;
}
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;
}
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,
.roothub_exec = ehci_roothub_exec,
.xfer_poll = ehci_do_poll,
};
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