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freebsd-dev/sys/dev/usb/controller/ohci.c
Alexander Kabaev 151ba7933a Do pass removing some write-only variables from the kernel. 
This reduces noise when kernel is compiled by newer GCC versions,
such as one used by external toolchain ports.

Reviewed by: kib, andrew(sys/arm and sys/arm64), emaste(partial), erj(partial)
Reviewed by: jhb (sys/dev/pci/* sys/kern/vfs_aio.c and sys/kern/kern_synch.c)
Differential Revision: https://reviews.freebsd.org/D10385
2017-12-25 04:48:39 +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) 1998 The NetBSD Foundation, Inc. All rights reserved.
* Copyright (c) 1998 Lennart Augustsson. 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 Open Host Controller driver.
*
* OHCI spec: http://www.compaq.com/productinfo/development/openhci.html
* USB spec: http://www.usb.org/developers/docs/usbspec.zip
*/
#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 ohcidebug
#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/ohci.h>
#include <dev/usb/controller/ohcireg.h>
#define OHCI_BUS2SC(bus) \
((ohci_softc_t *)(((uint8_t *)(bus)) - \
((uint8_t *)&(((ohci_softc_t *)0)->sc_bus))))
#ifdef USB_DEBUG
static int ohcidebug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, ohci, CTLFLAG_RW, 0, "USB ohci");
SYSCTL_INT(_hw_usb_ohci, OID_AUTO, debug, CTLFLAG_RWTUN,
&ohcidebug, 0, "ohci debug level");
static void ohci_dumpregs(ohci_softc_t *);
static void ohci_dump_tds(ohci_td_t *);
static uint8_t ohci_dump_td(ohci_td_t *);
static void ohci_dump_ed(ohci_ed_t *);
static uint8_t ohci_dump_itd(ohci_itd_t *);
static void ohci_dump_itds(ohci_itd_t *);
#endif
#define OBARR(sc) bus_space_barrier((sc)->sc_io_tag, (sc)->sc_io_hdl, 0, (sc)->sc_io_size, \
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
#define OWRITE1(sc, r, x) \
do { OBARR(sc); bus_space_write_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); } while (0)
#define OWRITE2(sc, r, x) \
do { OBARR(sc); bus_space_write_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); } while (0)
#define OWRITE4(sc, r, x) \
do { OBARR(sc); bus_space_write_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (r), (x)); } while (0)
#define OREAD1(sc, r) (OBARR(sc), bus_space_read_1((sc)->sc_io_tag, (sc)->sc_io_hdl, (r)))
#define OREAD2(sc, r) (OBARR(sc), bus_space_read_2((sc)->sc_io_tag, (sc)->sc_io_hdl, (r)))
#define OREAD4(sc, r) (OBARR(sc), bus_space_read_4((sc)->sc_io_tag, (sc)->sc_io_hdl, (r)))
#define OHCI_INTR_ENDPT 1
static const struct usb_bus_methods ohci_bus_methods;
static const struct usb_pipe_methods ohci_device_bulk_methods;
static const struct usb_pipe_methods ohci_device_ctrl_methods;
static const struct usb_pipe_methods ohci_device_intr_methods;
static const struct usb_pipe_methods ohci_device_isoc_methods;
static void ohci_do_poll(struct usb_bus *bus);
static void ohci_device_done(struct usb_xfer *xfer, usb_error_t error);
static void ohci_timeout(void *arg);
static uint8_t ohci_check_transfer(struct usb_xfer *xfer);
static void ohci_root_intr(ohci_softc_t *sc);
struct ohci_std_temp {
struct usb_page_cache *pc;
ohci_td_t *td;
ohci_td_t *td_next;
uint32_t average;
uint32_t td_flags;
uint32_t len;
uint16_t max_frame_size;
uint8_t shortpkt;
uint8_t setup_alt_next;
uint8_t last_frame;
};
static struct ohci_hcca *
ohci_get_hcca(ohci_softc_t *sc)
{
usb_pc_cpu_invalidate(&sc->sc_hw.hcca_pc);
return (sc->sc_hcca_p);
}
void
ohci_iterate_hw_softc(struct usb_bus *bus, usb_bus_mem_sub_cb_t *cb)
{
struct ohci_softc *sc = OHCI_BUS2SC(bus);
uint32_t i;
cb(bus, &sc->sc_hw.hcca_pc, &sc->sc_hw.hcca_pg,
sizeof(ohci_hcca_t), OHCI_HCCA_ALIGN);
cb(bus, &sc->sc_hw.ctrl_start_pc, &sc->sc_hw.ctrl_start_pg,
sizeof(ohci_ed_t), OHCI_ED_ALIGN);
cb(bus, &sc->sc_hw.bulk_start_pc, &sc->sc_hw.bulk_start_pg,
sizeof(ohci_ed_t), OHCI_ED_ALIGN);
cb(bus, &sc->sc_hw.isoc_start_pc, &sc->sc_hw.isoc_start_pg,
sizeof(ohci_ed_t), OHCI_ED_ALIGN);
for (i = 0; i != OHCI_NO_EDS; i++) {
cb(bus, sc->sc_hw.intr_start_pc + i, sc->sc_hw.intr_start_pg + i,
sizeof(ohci_ed_t), OHCI_ED_ALIGN);
}
}
static usb_error_t
ohci_controller_init(ohci_softc_t *sc, int do_suspend)
{
struct usb_page_search buf_res;
uint32_t i;
uint32_t ctl;
uint32_t ival;
uint32_t hcr;
uint32_t fm;
uint32_t per;
uint32_t desca;
/* Determine in what context we are running. */
ctl = OREAD4(sc, OHCI_CONTROL);
if (ctl & OHCI_IR) {
/* SMM active, request change */
DPRINTF("SMM active, request owner change\n");
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_OCR);
for (i = 0; (i < 100) && (ctl & OHCI_IR); i++) {
usb_pause_mtx(NULL, hz / 1000);
ctl = OREAD4(sc, OHCI_CONTROL);
}
if (ctl & OHCI_IR) {
device_printf(sc->sc_bus.bdev,
"SMM does not respond, resetting\n");
OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
goto reset;
}
} else {
DPRINTF("cold started\n");
reset:
/* controller was cold started */
usb_pause_mtx(NULL,
USB_MS_TO_TICKS(USB_BUS_RESET_DELAY));
}
/*
* This reset should not be necessary according to the OHCI spec, but
* without it some controllers do not start.
*/
DPRINTF("%s: resetting\n", device_get_nameunit(sc->sc_bus.bdev));
OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
usb_pause_mtx(NULL,
USB_MS_TO_TICKS(USB_BUS_RESET_DELAY));
/* we now own the host controller and the bus has been reset */
ival = OHCI_GET_IVAL(OREAD4(sc, OHCI_FM_INTERVAL));
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_HCR); /* Reset HC */
/* nominal time for a reset is 10 us */
for (i = 0; i < 10; i++) {
DELAY(10);
hcr = OREAD4(sc, OHCI_COMMAND_STATUS) & OHCI_HCR;
if (!hcr) {
break;
}
}
if (hcr) {
device_printf(sc->sc_bus.bdev, "reset timeout\n");
return (USB_ERR_IOERROR);
}
#ifdef USB_DEBUG
if (ohcidebug > 15) {
ohci_dumpregs(sc);
}
#endif
if (do_suspend) {
OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_SUSPEND);
return (USB_ERR_NORMAL_COMPLETION);
}
/* The controller is now in SUSPEND state, we have 2ms to finish. */
/* set up HC registers */
usbd_get_page(&sc->sc_hw.hcca_pc, 0, &buf_res);
OWRITE4(sc, OHCI_HCCA, buf_res.physaddr);
usbd_get_page(&sc->sc_hw.ctrl_start_pc, 0, &buf_res);
OWRITE4(sc, OHCI_CONTROL_HEAD_ED, buf_res.physaddr);
usbd_get_page(&sc->sc_hw.bulk_start_pc, 0, &buf_res);
OWRITE4(sc, OHCI_BULK_HEAD_ED, buf_res.physaddr);
/* disable all interrupts and then switch on all desired interrupts */
OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
OWRITE4(sc, OHCI_INTERRUPT_ENABLE, sc->sc_eintrs | OHCI_MIE);
/* switch on desired functional features */
ctl = OREAD4(sc, OHCI_CONTROL);
ctl &= ~(OHCI_CBSR_MASK | OHCI_LES | OHCI_HCFS_MASK | OHCI_IR);
ctl |= OHCI_PLE | OHCI_IE | OHCI_CLE | OHCI_BLE |
OHCI_RATIO_1_4 | OHCI_HCFS_OPERATIONAL;
/* And finally start it! */
OWRITE4(sc, OHCI_CONTROL, ctl);
/*
* The controller is now OPERATIONAL. Set a some final
* registers that should be set earlier, but that the
* controller ignores when in the SUSPEND state.
*/
fm = (OREAD4(sc, OHCI_FM_INTERVAL) & OHCI_FIT) ^ OHCI_FIT;
fm |= OHCI_FSMPS(ival) | ival;
OWRITE4(sc, OHCI_FM_INTERVAL, fm);
per = OHCI_PERIODIC(ival); /* 90% periodic */
OWRITE4(sc, OHCI_PERIODIC_START, per);
/* Fiddle the No OverCurrent Protection bit to avoid chip bug. */
desca = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca | OHCI_NOCP);
OWRITE4(sc, OHCI_RH_STATUS, OHCI_LPSC); /* Enable port power */
usb_pause_mtx(NULL,
USB_MS_TO_TICKS(OHCI_ENABLE_POWER_DELAY));
OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca);
/*
* The AMD756 requires a delay before re-reading the register,
* otherwise it will occasionally report 0 ports.
*/
sc->sc_noport = 0;
for (i = 0; (i < 10) && (sc->sc_noport == 0); i++) {
usb_pause_mtx(NULL,
USB_MS_TO_TICKS(OHCI_READ_DESC_DELAY));
sc->sc_noport = OHCI_GET_NDP(OREAD4(sc, OHCI_RH_DESCRIPTOR_A));
}
#ifdef USB_DEBUG
if (ohcidebug > 5) {
ohci_dumpregs(sc);
}
#endif
return (USB_ERR_NORMAL_COMPLETION);
}
static struct ohci_ed *
ohci_init_ed(struct usb_page_cache *pc)
{
struct usb_page_search buf_res;
struct ohci_ed *ed;
usbd_get_page(pc, 0, &buf_res);
ed = buf_res.buffer;
ed->ed_self = htole32(buf_res.physaddr);
ed->ed_flags = htole32(OHCI_ED_SKIP);
ed->page_cache = pc;
return (ed);
}
usb_error_t
ohci_init(ohci_softc_t *sc)
{
struct usb_page_search buf_res;
uint16_t i;
uint16_t bit;
uint16_t x;
uint16_t y;
DPRINTF("start\n");
sc->sc_eintrs = OHCI_NORMAL_INTRS;
/*
* Setup all ED's
*/
sc->sc_ctrl_p_last =
ohci_init_ed(&sc->sc_hw.ctrl_start_pc);
sc->sc_bulk_p_last =
ohci_init_ed(&sc->sc_hw.bulk_start_pc);
sc->sc_isoc_p_last =
ohci_init_ed(&sc->sc_hw.isoc_start_pc);
for (i = 0; i != OHCI_NO_EDS; i++) {
sc->sc_intr_p_last[i] =
ohci_init_ed(sc->sc_hw.intr_start_pc + i);
}
/*
* the QHs are arranged to give poll intervals that are
* powers of 2 times 1ms
*/
bit = OHCI_NO_EDS / 2;
while (bit) {
x = bit;
while (x & bit) {
ohci_ed_t *ed_x;
ohci_ed_t *ed_y;
y = (x ^ bit) | (bit / 2);
/*
* the next QH has half the poll interval
*/
ed_x = sc->sc_intr_p_last[x];
ed_y = sc->sc_intr_p_last[y];
ed_x->next = NULL;
ed_x->ed_next = ed_y->ed_self;
x++;
}
bit >>= 1;
}
if (1) {
ohci_ed_t *ed_int;
ohci_ed_t *ed_isc;
ed_int = sc->sc_intr_p_last[0];
ed_isc = sc->sc_isoc_p_last;
/* the last (1ms) QH */
ed_int->next = ed_isc;
ed_int->ed_next = ed_isc->ed_self;
}
usbd_get_page(&sc->sc_hw.hcca_pc, 0, &buf_res);
sc->sc_hcca_p = buf_res.buffer;
/*
* Fill HCCA interrupt table. The bit reversal is to get
* the tree set up properly to spread the interrupts.
*/
for (i = 0; i != OHCI_NO_INTRS; i++) {
sc->sc_hcca_p->hcca_interrupt_table[i] =
sc->sc_intr_p_last[i | (OHCI_NO_EDS / 2)]->ed_self;
}
/* flush all cache into memory */
usb_bus_mem_flush_all(&sc->sc_bus, &ohci_iterate_hw_softc);
/* set up the bus struct */
sc->sc_bus.methods = &ohci_bus_methods;
usb_callout_init_mtx(&sc->sc_tmo_rhsc, &sc->sc_bus.bus_mtx, 0);
#ifdef USB_DEBUG
if (ohcidebug > 15) {
for (i = 0; i != OHCI_NO_EDS; i++) {
printf("ed#%d ", i);
ohci_dump_ed(sc->sc_intr_p_last[i]);
}
printf("iso ");
ohci_dump_ed(sc->sc_isoc_p_last);
}
#endif
sc->sc_bus.usbrev = USB_REV_1_0;
if (ohci_controller_init(sc, 0) != 0)
return (USB_ERR_INVAL);
/* catch any lost interrupts */
ohci_do_poll(&sc->sc_bus);
return (USB_ERR_NORMAL_COMPLETION);
}
/*
* shut down the controller when the system is going down
*/
void
ohci_detach(struct ohci_softc *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
usb_callout_stop(&sc->sc_tmo_rhsc);
OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
USB_BUS_UNLOCK(&sc->sc_bus);
/* XXX let stray task complete */
usb_pause_mtx(NULL, hz / 20);
usb_callout_drain(&sc->sc_tmo_rhsc);
}
static void
ohci_suspend(ohci_softc_t *sc)
{
DPRINTF("\n");
#ifdef USB_DEBUG
if (ohcidebug > 2)
ohci_dumpregs(sc);
#endif
/* reset HC and leave it suspended */
ohci_controller_init(sc, 1);
}
static void
ohci_resume(ohci_softc_t *sc)
{
DPRINTF("\n");
#ifdef USB_DEBUG
if (ohcidebug > 2)
ohci_dumpregs(sc);
#endif
/* some broken BIOSes never initialize the Controller chip */
ohci_controller_init(sc, 0);
/* catch any lost interrupts */
ohci_do_poll(&sc->sc_bus);
}
#ifdef USB_DEBUG
static void
ohci_dumpregs(ohci_softc_t *sc)
{
struct ohci_hcca *hcca;
DPRINTF("ohci_dumpregs: rev=0x%08x control=0x%08x command=0x%08x\n",
OREAD4(sc, OHCI_REVISION),
OREAD4(sc, OHCI_CONTROL),
OREAD4(sc, OHCI_COMMAND_STATUS));
DPRINTF(" intrstat=0x%08x intre=0x%08x intrd=0x%08x\n",
OREAD4(sc, OHCI_INTERRUPT_STATUS),
OREAD4(sc, OHCI_INTERRUPT_ENABLE),
OREAD4(sc, OHCI_INTERRUPT_DISABLE));
DPRINTF(" hcca=0x%08x percur=0x%08x ctrlhd=0x%08x\n",
OREAD4(sc, OHCI_HCCA),
OREAD4(sc, OHCI_PERIOD_CURRENT_ED),
OREAD4(sc, OHCI_CONTROL_HEAD_ED));
DPRINTF(" ctrlcur=0x%08x bulkhd=0x%08x bulkcur=0x%08x\n",
OREAD4(sc, OHCI_CONTROL_CURRENT_ED),
OREAD4(sc, OHCI_BULK_HEAD_ED),
OREAD4(sc, OHCI_BULK_CURRENT_ED));
DPRINTF(" done=0x%08x fmival=0x%08x fmrem=0x%08x\n",
OREAD4(sc, OHCI_DONE_HEAD),
OREAD4(sc, OHCI_FM_INTERVAL),
OREAD4(sc, OHCI_FM_REMAINING));
DPRINTF(" fmnum=0x%08x perst=0x%08x lsthrs=0x%08x\n",
OREAD4(sc, OHCI_FM_NUMBER),
OREAD4(sc, OHCI_PERIODIC_START),
OREAD4(sc, OHCI_LS_THRESHOLD));
DPRINTF(" desca=0x%08x descb=0x%08x stat=0x%08x\n",
OREAD4(sc, OHCI_RH_DESCRIPTOR_A),
OREAD4(sc, OHCI_RH_DESCRIPTOR_B),
OREAD4(sc, OHCI_RH_STATUS));
DPRINTF(" port1=0x%08x port2=0x%08x\n",
OREAD4(sc, OHCI_RH_PORT_STATUS(1)),
OREAD4(sc, OHCI_RH_PORT_STATUS(2)));
hcca = ohci_get_hcca(sc);
DPRINTF(" HCCA: frame_number=0x%04x done_head=0x%08x\n",
le32toh(hcca->hcca_frame_number),
le32toh(hcca->hcca_done_head));
}
static void
ohci_dump_tds(ohci_td_t *std)
{
for (; std; std = std->obj_next) {
if (ohci_dump_td(std)) {
break;
}
}
}
static uint8_t
ohci_dump_td(ohci_td_t *std)
{
uint32_t td_flags;
uint8_t temp;
usb_pc_cpu_invalidate(std->page_cache);
td_flags = le32toh(std->td_flags);
temp = (std->td_next == 0);
printf("TD(%p) at 0x%08x: %s%s%s%s%s delay=%d ec=%d "
"cc=%d\ncbp=0x%08x next=0x%08x be=0x%08x\n",
std, le32toh(std->td_self),
(td_flags & OHCI_TD_R) ? "-R" : "",
(td_flags & OHCI_TD_OUT) ? "-OUT" : "",
(td_flags & OHCI_TD_IN) ? "-IN" : "",
((td_flags & OHCI_TD_TOGGLE_MASK) == OHCI_TD_TOGGLE_1) ? "-TOG1" : "",
((td_flags & OHCI_TD_TOGGLE_MASK) == OHCI_TD_TOGGLE_0) ? "-TOG0" : "",
OHCI_TD_GET_DI(td_flags),
OHCI_TD_GET_EC(td_flags),
OHCI_TD_GET_CC(td_flags),
le32toh(std->td_cbp),
le32toh(std->td_next),
le32toh(std->td_be));
return (temp);
}
static uint8_t
ohci_dump_itd(ohci_itd_t *sitd)
{
uint32_t itd_flags;
uint16_t i;
uint8_t temp;
usb_pc_cpu_invalidate(sitd->page_cache);
itd_flags = le32toh(sitd->itd_flags);
temp = (sitd->itd_next == 0);
printf("ITD(%p) at 0x%08x: sf=%d di=%d fc=%d cc=%d\n"
"bp0=0x%08x next=0x%08x be=0x%08x\n",
sitd, le32toh(sitd->itd_self),
OHCI_ITD_GET_SF(itd_flags),
OHCI_ITD_GET_DI(itd_flags),
OHCI_ITD_GET_FC(itd_flags),
OHCI_ITD_GET_CC(itd_flags),
le32toh(sitd->itd_bp0),
le32toh(sitd->itd_next),
le32toh(sitd->itd_be));
for (i = 0; i < OHCI_ITD_NOFFSET; i++) {
printf("offs[%d]=0x%04x ", i,
(uint32_t)le16toh(sitd->itd_offset[i]));
}
printf("\n");
return (temp);
}
static void
ohci_dump_itds(ohci_itd_t *sitd)
{
for (; sitd; sitd = sitd->obj_next) {
if (ohci_dump_itd(sitd)) {
break;
}
}
}
static void
ohci_dump_ed(ohci_ed_t *sed)
{
uint32_t ed_flags;
uint32_t ed_headp;
usb_pc_cpu_invalidate(sed->page_cache);
ed_flags = le32toh(sed->ed_flags);
ed_headp = le32toh(sed->ed_headp);
printf("ED(%p) at 0x%08x: addr=%d endpt=%d maxp=%d flags=%s%s%s%s%s\n"
"tailp=0x%08x headflags=%s%s headp=0x%08x nexted=0x%08x\n",
sed, le32toh(sed->ed_self),
OHCI_ED_GET_FA(ed_flags),
OHCI_ED_GET_EN(ed_flags),
OHCI_ED_GET_MAXP(ed_flags),
(ed_flags & OHCI_ED_DIR_OUT) ? "-OUT" : "",
(ed_flags & OHCI_ED_DIR_IN) ? "-IN" : "",
(ed_flags & OHCI_ED_SPEED) ? "-LOWSPEED" : "",
(ed_flags & OHCI_ED_SKIP) ? "-SKIP" : "",
(ed_flags & OHCI_ED_FORMAT_ISO) ? "-ISO" : "",
le32toh(sed->ed_tailp),
(ed_headp & OHCI_HALTED) ? "-HALTED" : "",
(ed_headp & OHCI_TOGGLECARRY) ? "-CARRY" : "",
le32toh(sed->ed_headp),
le32toh(sed->ed_next));
}
#endif
static void
ohci_transfer_intr_enqueue(struct usb_xfer *xfer)
{
/* check for early completion */
if (ohci_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, &ohci_timeout, xfer->timeout);
}
}
#define OHCI_APPEND_QH(sed,last) (last) = _ohci_append_qh(sed,last)
static ohci_ed_t *
_ohci_append_qh(ohci_ed_t *sed, ohci_ed_t *last)
{
DPRINTFN(11, "%p to %p\n", sed, last);
if (sed->prev != NULL) {
/* should not happen */
DPRINTFN(0, "ED already linked!\n");
return (last);
}
/* (sc->sc_bus.bus_mtx) must be locked */
sed->next = last->next;
sed->ed_next = last->ed_next;
sed->ed_tailp = 0;
sed->prev = last;
usb_pc_cpu_flush(sed->page_cache);
/*
* the last->next->prev is never followed: sed->next->prev = sed;
*/
last->next = sed;
last->ed_next = sed->ed_self;
usb_pc_cpu_flush(last->page_cache);
return (sed);
}
#define OHCI_REMOVE_QH(sed,last) (last) = _ohci_remove_qh(sed,last)
static ohci_ed_t *
_ohci_remove_qh(ohci_ed_t *sed, ohci_ed_t *last)
{
DPRINTFN(11, "%p from %p\n", sed, last);
/* (sc->sc_bus.bus_mtx) must be locked */
/* only remove if not removed from a queue */
if (sed->prev) {
sed->prev->next = sed->next;
sed->prev->ed_next = sed->ed_next;
usb_pc_cpu_flush(sed->prev->page_cache);
if (sed->next) {
sed->next->prev = sed->prev;
usb_pc_cpu_flush(sed->next->page_cache);
}
last = ((last == sed) ? sed->prev : last);
sed->prev = 0;
usb_pc_cpu_flush(sed->page_cache);
}
return (last);
}
static void
ohci_isoc_done(struct usb_xfer *xfer)
{
uint8_t nframes;
uint32_t *plen = xfer->frlengths;
volatile uint16_t *olen;
uint16_t len = 0;
ohci_itd_t *td = xfer->td_transfer_first;
while (1) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
#ifdef USB_DEBUG
if (ohcidebug > 5) {
DPRINTF("isoc TD\n");
ohci_dump_itd(td);
}
#endif
usb_pc_cpu_invalidate(td->page_cache);
nframes = td->frames;
olen = &td->itd_offset[0];
if (nframes > 8) {
nframes = 8;
}
while (nframes--) {
len = le16toh(*olen);
if ((len >> 12) == OHCI_CC_NOT_ACCESSED) {
len = 0;
} else {
len &= ((1 << 12) - 1);
}
if (len > *plen) {
len = 0;/* invalid length */
}
*plen = len;
plen++;
olen++;
}
if (((void *)td) == xfer->td_transfer_last) {
break;
}
td = td->obj_next;
}
xfer->aframes = xfer->nframes;
ohci_device_done(xfer, USB_ERR_NORMAL_COMPLETION);
}
#ifdef USB_DEBUG
static const char *const
ohci_cc_strs[] =
{
"NO_ERROR",
"CRC",
"BIT_STUFFING",
"DATA_TOGGLE_MISMATCH",
"STALL",
"DEVICE_NOT_RESPONDING",
"PID_CHECK_FAILURE",
"UNEXPECTED_PID",
"DATA_OVERRUN",
"DATA_UNDERRUN",
"BUFFER_OVERRUN",
"BUFFER_UNDERRUN",
"reserved",
"reserved",
"NOT_ACCESSED",
"NOT_ACCESSED"
};
#endif
static usb_error_t
ohci_non_isoc_done_sub(struct usb_xfer *xfer)
{
ohci_td_t *td;
ohci_td_t *td_alt_next;
uint32_t temp;
uint32_t phy_start;
uint32_t phy_end;
uint32_t td_flags;
uint16_t cc;
td = xfer->td_transfer_cache;
td_alt_next = td->alt_next;
td_flags = 0;
if (xfer->aframes != xfer->nframes) {
usbd_xfer_set_frame_len(xfer, xfer->aframes, 0);
}
while (1) {
usb_pc_cpu_invalidate(td->page_cache);
phy_start = le32toh(td->td_cbp);
td_flags = le32toh(td->td_flags);
cc = OHCI_TD_GET_CC(td_flags);
if (phy_start) {
/*
* short transfer - compute the number of remaining
* bytes in the hardware buffer:
*/
phy_end = le32toh(td->td_be);
temp = (OHCI_PAGE(phy_start ^ phy_end) ?
(OHCI_PAGE_SIZE + 1) : 0x0001);
temp += OHCI_PAGE_OFFSET(phy_end);
temp -= OHCI_PAGE_OFFSET(phy_start);
if (temp > td->len) {
/* guard against corruption */
cc = OHCI_CC_STALL;
} else if (xfer->aframes != xfer->nframes) {
/*
* Sum up total transfer length
* in "frlengths[]":
*/
xfer->frlengths[xfer->aframes] += td->len - temp;
}
} else {
if (xfer->aframes != xfer->nframes) {
/* transfer was complete */
xfer->frlengths[xfer->aframes] += td->len;
}
}
/* Check for last transfer */
if (((void *)td) == xfer->td_transfer_last) {
td = NULL;
break;
}
/* Check transfer status */
if (cc) {
/* the transfer is finished */
td = NULL;
break;
}
/* Check for short transfer */
if (phy_start) {
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;
DPRINTFN(16, "error cc=%d (%s)\n",
cc, ohci_cc_strs[cc]);
return ((cc == 0) ? USB_ERR_NORMAL_COMPLETION :
(cc == OHCI_CC_STALL) ? USB_ERR_STALLED : USB_ERR_IOERROR);
}
static void
ohci_non_isoc_done(struct usb_xfer *xfer)
{
usb_error_t err = 0;
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
#ifdef USB_DEBUG
if (ohcidebug > 10) {
ohci_dump_tds(xfer->td_transfer_first);
}
#endif
/* reset scanner */
xfer->td_transfer_cache = xfer->td_transfer_first;
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
err = ohci_non_isoc_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = ohci_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 = ohci_non_isoc_done_sub(xfer);
}
done:
ohci_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* ohci_check_transfer_sub
*------------------------------------------------------------------------*/
static void
ohci_check_transfer_sub(struct usb_xfer *xfer)
{
ohci_td_t *td;
ohci_ed_t *ed;
uint32_t phy_start;
uint32_t td_flags;
uint32_t td_next;
uint16_t cc;
td = xfer->td_transfer_cache;
while (1) {
usb_pc_cpu_invalidate(td->page_cache);
phy_start = le32toh(td->td_cbp);
td_flags = le32toh(td->td_flags);
td_next = le32toh(td->td_next);
/* Check for last transfer */
if (((void *)td) == xfer->td_transfer_last) {
/* the transfer is finished */
td = NULL;
break;
}
/* Check transfer status */
cc = OHCI_TD_GET_CC(td_flags);
if (cc) {
/* the transfer is finished */
td = NULL;
break;
}
/*
* Check if we reached the last packet
* or if there is a short packet:
*/
if (((td_next & (~0xF)) == OHCI_TD_NEXT_END) || phy_start) {
/* follow alt next */
td = td->alt_next;
break;
}
td = td->obj_next;
}
/* update transfer cache */
xfer->td_transfer_cache = td;
if (td) {
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
ed->ed_headp = td->td_self;
usb_pc_cpu_flush(ed->page_cache);
DPRINTFN(13, "xfer=%p following alt next\n", xfer);
/*
* Make sure that the OHCI re-scans the schedule by
* writing the BLF and CLF bits:
*/
if (xfer->xroot->udev->flags.self_suspended) {
/* nothing to do */
} else if (xfer->endpoint->methods == &ohci_device_bulk_methods) {
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF);
} else if (xfer->endpoint->methods == &ohci_device_ctrl_methods) {
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
}
}
}
/*------------------------------------------------------------------------*
* ohci_check_transfer
*
* Return values:
* 0: USB transfer is not finished
* Else: USB transfer is finished
*------------------------------------------------------------------------*/
static uint8_t
ohci_check_transfer(struct usb_xfer *xfer)
{
ohci_ed_t *ed;
uint32_t ed_headp;
uint32_t ed_tailp;
DPRINTFN(13, "xfer=%p checking transfer\n", xfer);
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
usb_pc_cpu_invalidate(ed->page_cache);
ed_headp = le32toh(ed->ed_headp);
ed_tailp = le32toh(ed->ed_tailp);
if ((ed_headp & OHCI_HALTED) ||
(((ed_headp ^ ed_tailp) & (~0xF)) == 0)) {
if (xfer->endpoint->methods == &ohci_device_isoc_methods) {
/* isochronous transfer */
ohci_isoc_done(xfer);
} else {
if (xfer->flags_int.short_frames_ok) {
ohci_check_transfer_sub(xfer);
if (xfer->td_transfer_cache) {
/* not finished yet */
return (0);
}
}
/* store data-toggle */
if (ed_headp & OHCI_TOGGLECARRY) {
xfer->endpoint->toggle_next = 1;
} else {
xfer->endpoint->toggle_next = 0;
}
/* non-isochronous transfer */
ohci_non_isoc_done(xfer);
}
return (1);
}
DPRINTFN(13, "xfer=%p is still active\n", xfer);
return (0);
}
static void
ohci_rhsc_enable(ohci_softc_t *sc)
{
DPRINTFN(5, "\n");
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
sc->sc_eintrs |= OHCI_RHSC;
OWRITE4(sc, OHCI_INTERRUPT_ENABLE, OHCI_RHSC);
/* acknowledge any RHSC interrupt */
OWRITE4(sc, OHCI_INTERRUPT_STATUS, OHCI_RHSC);
ohci_root_intr(sc);
}
static void
ohci_interrupt_poll(ohci_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 (ohci_check_transfer(xfer)) {
/* queue has been modified */
goto repeat;
}
}
}
/*------------------------------------------------------------------------*
* ohci_interrupt - OHCI 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
ohci_interrupt(ohci_softc_t *sc)
{
struct ohci_hcca *hcca;
uint32_t status;
uint32_t done;
USB_BUS_LOCK(&sc->sc_bus);
hcca = ohci_get_hcca(sc);
DPRINTFN(16, "real interrupt\n");
#ifdef USB_DEBUG
if (ohcidebug > 15) {
ohci_dumpregs(sc);
}
#endif
done = le32toh(hcca->hcca_done_head);
/*
* The LSb of done is used to inform the HC Driver that an interrupt
* condition exists for both the Done list and for another event
* recorded in HcInterruptStatus. On an interrupt from the HC, the
* HC Driver checks the HccaDoneHead Value. If this value is 0, then
* the interrupt was caused by other than the HccaDoneHead update
* and the HcInterruptStatus register needs to be accessed to
* determine that exact interrupt cause. If HccaDoneHead is nonzero,
* then a Done list update interrupt is indicated and if the LSb of
* done is nonzero, then an additional interrupt event is indicated
* and HcInterruptStatus should be checked to determine its cause.
*/
if (done != 0) {
status = 0;
if (done & ~OHCI_DONE_INTRS) {
status |= OHCI_WDH;
}
if (done & OHCI_DONE_INTRS) {
status |= OREAD4(sc, OHCI_INTERRUPT_STATUS);
}
hcca->hcca_done_head = 0;
usb_pc_cpu_flush(&sc->sc_hw.hcca_pc);
} else {
status = OREAD4(sc, OHCI_INTERRUPT_STATUS) & ~OHCI_WDH;
}
status &= ~OHCI_MIE;
if (status == 0) {
/*
* nothing to be done (PCI shared
* interrupt)
*/
goto done;
}
OWRITE4(sc, OHCI_INTERRUPT_STATUS, status); /* Acknowledge */
status &= sc->sc_eintrs;
if (status == 0) {
goto done;
}
if (status & (OHCI_SO | OHCI_RD | OHCI_UE | OHCI_RHSC)) {
#if 0
if (status & OHCI_SO) {
/* XXX do what */
}
#endif
if (status & OHCI_RD) {
printf("%s: resume detect\n", __FUNCTION__);
/* XXX process resume detect */
}
if (status & OHCI_UE) {
printf("%s: unrecoverable error, "
"controller halted\n", __FUNCTION__);
OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
/* XXX what else */
}
if (status & OHCI_RHSC) {
/*
* Disable RHSC interrupt for now, because it will be
* on until the port has been reset.
*/
sc->sc_eintrs &= ~OHCI_RHSC;
OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_RHSC);
ohci_root_intr(sc);
/* do not allow RHSC interrupts > 1 per second */
usb_callout_reset(&sc->sc_tmo_rhsc, hz,
(void *)&ohci_rhsc_enable, sc);
}
}
status &= ~(OHCI_RHSC | OHCI_WDH | OHCI_SO);
if (status != 0) {
/* Block unprocessed interrupts. XXX */
OWRITE4(sc, OHCI_INTERRUPT_DISABLE, status);
sc->sc_eintrs &= ~status;
printf("%s: blocking intrs 0x%x\n",
__FUNCTION__, status);
}
/* poll all the USB transfers */
ohci_interrupt_poll(sc);
done:
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*
* called when a request does not complete
*/
static void
ohci_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 */
ohci_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
ohci_do_poll(struct usb_bus *bus)
{
struct ohci_softc *sc = OHCI_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
ohci_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
ohci_setup_standard_chain_sub(struct ohci_std_temp *temp)
{
struct usb_page_search buf_res;
ohci_td_t *td;
ohci_td_t *td_next;
ohci_td_t *td_alt_next;
uint32_t buf_offset;
uint32_t average;
uint32_t len_old;
uint8_t shortpkt_old;
uint8_t precompute;
td_alt_next = NULL;
buf_offset = 0;
shortpkt_old = temp->shortpkt;
len_old = temp->len;
precompute = 1;
/* software is used to detect short incoming transfers */
if ((temp->td_flags & htole32(OHCI_TD_DP_MASK)) == htole32(OHCI_TD_IN)) {
temp->td_flags |= htole32(OHCI_TD_R);
} else {
temp->td_flags &= ~htole32(OHCI_TD_R);
}
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 OHCI 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->td_flags = temp->td_flags;
/* the next TD uses TOGGLE_CARRY */
temp->td_flags &= ~htole32(OHCI_TD_TOGGLE_MASK);
if (average == 0) {
/*
* The buffer start and end phys addresses should be
* 0x0 for a zero length packet.
*/
td->td_cbp = 0;
td->td_be = 0;
td->len = 0;
} else {
usbd_get_page(temp->pc, buf_offset, &buf_res);
td->td_cbp = htole32(buf_res.physaddr);
buf_offset += (average - 1);
usbd_get_page(temp->pc, buf_offset, &buf_res);
td->td_be = htole32(buf_res.physaddr);
buf_offset++;
td->len = average;
/* update remaining length */
temp->len -= average;
}
if ((td_next == td_alt_next) && temp->setup_alt_next) {
/* we need to receive these frames one by one ! */
td->td_flags &= htole32(~OHCI_TD_INTR_MASK);
td->td_flags |= htole32(OHCI_TD_SET_DI(1));
td->td_next = htole32(OHCI_TD_NEXT_END);
} else {
if (td_next) {
/* link the current TD with the next one */
td->td_next = td_next->td_self;
}
}
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) {
/* no alternate next */
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
ohci_setup_standard_chain(struct usb_xfer *xfer, ohci_ed_t **ed_last)
{
struct ohci_std_temp temp;
const struct usb_pipe_methods *methods;
ohci_ed_t *ed;
ohci_td_t *td;
uint32_t ed_flags;
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;
/* 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.last_frame = 0;
temp.setup_alt_next = xfer->flags_int.short_frames_ok;
methods = xfer->endpoint->methods;
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
temp.td_flags = htole32(OHCI_TD_SETUP | OHCI_TD_NOCC |
OHCI_TD_TOGGLE_0 | OHCI_TD_NOINTR);
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;
}
}
ohci_setup_standard_chain_sub(&temp);
/*
* XXX assume that the setup message is
* contained within one USB packet:
*/
xfer->endpoint->toggle_next = 1;
}
x = 1;
} else {
x = 0;
}
temp.td_flags = htole32(OHCI_TD_NOCC | OHCI_TD_NOINTR);
/* set data toggle */
if (xfer->endpoint->toggle_next) {
temp.td_flags |= htole32(OHCI_TD_TOGGLE_1);
} else {
temp.td_flags |= htole32(OHCI_TD_TOGGLE_0);
}
/* set endpoint direction */
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) {
temp.td_flags |= htole32(OHCI_TD_IN);
} else {
temp.td_flags |= htole32(OHCI_TD_OUT);
}
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;
}
}
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;
}
ohci_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.
*/
/* set endpoint direction and data toggle */
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN) {
temp.td_flags = htole32(OHCI_TD_OUT |
OHCI_TD_NOCC | OHCI_TD_TOGGLE_1 | OHCI_TD_SET_DI(1));
} else {
temp.td_flags = htole32(OHCI_TD_IN |
OHCI_TD_NOCC | OHCI_TD_TOGGLE_1 | OHCI_TD_SET_DI(1));
}
temp.len = 0;
temp.pc = NULL;
temp.shortpkt = 0;
temp.last_frame = 1;
temp.setup_alt_next = 0;
ohci_setup_standard_chain_sub(&temp);
}
td = temp.td;
/* Ensure that last TD is terminating: */
td->td_next = htole32(OHCI_TD_NEXT_END);
td->td_flags &= ~htole32(OHCI_TD_INTR_MASK);
td->td_flags |= htole32(OHCI_TD_SET_DI(1));
usb_pc_cpu_flush(td->page_cache);
/* must have at least one frame! */
xfer->td_transfer_last = td;
#ifdef USB_DEBUG
if (ohcidebug > 8) {
DPRINTF("nexttog=%d; data before transfer:\n",
xfer->endpoint->toggle_next);
ohci_dump_tds(xfer->td_transfer_first);
}
#endif
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
ed_flags = (OHCI_ED_SET_FA(xfer->address) |
OHCI_ED_SET_EN(UE_GET_ADDR(xfer->endpointno)) |
OHCI_ED_SET_MAXP(xfer->max_frame_size));
ed_flags |= (OHCI_ED_FORMAT_GEN | OHCI_ED_DIR_TD);
if (xfer->xroot->udev->speed == USB_SPEED_LOW) {
ed_flags |= OHCI_ED_SPEED;
}
ed->ed_flags = htole32(ed_flags);
td = xfer->td_transfer_first;
ed->ed_headp = td->td_self;
if (xfer->xroot->udev->flags.self_suspended == 0) {
/* the append function will flush the endpoint descriptor */
OHCI_APPEND_QH(ed, *ed_last);
if (methods == &ohci_device_bulk_methods) {
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF);
}
if (methods == &ohci_device_ctrl_methods) {
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
}
} else {
usb_pc_cpu_flush(ed->page_cache);
}
}
static void
ohci_root_intr(ohci_softc_t *sc)
{
uint32_t hstatus;
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));
hstatus = OREAD4(sc, OHCI_RH_STATUS);
DPRINTF("sc=%p hstatus=0x%08x\n",
sc, hstatus);
/* 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 (OREAD4(sc, OHCI_RH_PORT_STATUS(i)) >> 16) {
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));
}
/* NOTE: "done" can be run two times in a row,
* from close and from interrupt
*/
static void
ohci_device_done(struct usb_xfer *xfer, usb_error_t error)
{
const struct usb_pipe_methods *methods = xfer->endpoint->methods;
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
ohci_ed_t *ed;
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
if (ed) {
usb_pc_cpu_invalidate(ed->page_cache);
}
if (methods == &ohci_device_bulk_methods) {
OHCI_REMOVE_QH(ed, sc->sc_bulk_p_last);
}
if (methods == &ohci_device_ctrl_methods) {
OHCI_REMOVE_QH(ed, sc->sc_ctrl_p_last);
}
if (methods == &ohci_device_intr_methods) {
OHCI_REMOVE_QH(ed, sc->sc_intr_p_last[xfer->qh_pos]);
}
if (methods == &ohci_device_isoc_methods) {
OHCI_REMOVE_QH(ed, sc->sc_isoc_p_last);
}
xfer->td_transfer_first = NULL;
xfer->td_transfer_last = NULL;
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
/*------------------------------------------------------------------------*
* ohci bulk support
*------------------------------------------------------------------------*/
static void
ohci_device_bulk_open(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_bulk_close(struct usb_xfer *xfer)
{
ohci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ohci_device_bulk_enter(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_bulk_start(struct usb_xfer *xfer)
{
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ohci_setup_standard_chain(xfer, &sc->sc_bulk_p_last);
/* put transfer on interrupt queue */
ohci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ohci_device_bulk_methods =
{
.open = ohci_device_bulk_open,
.close = ohci_device_bulk_close,
.enter = ohci_device_bulk_enter,
.start = ohci_device_bulk_start,
};
/*------------------------------------------------------------------------*
* ohci control support
*------------------------------------------------------------------------*/
static void
ohci_device_ctrl_open(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_ctrl_close(struct usb_xfer *xfer)
{
ohci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ohci_device_ctrl_enter(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_ctrl_start(struct usb_xfer *xfer)
{
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ohci_setup_standard_chain(xfer, &sc->sc_ctrl_p_last);
/* put transfer on interrupt queue */
ohci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ohci_device_ctrl_methods =
{
.open = ohci_device_ctrl_open,
.close = ohci_device_ctrl_close,
.enter = ohci_device_ctrl_enter,
.start = ohci_device_ctrl_start,
};
/*------------------------------------------------------------------------*
* ohci interrupt support
*------------------------------------------------------------------------*/
static void
ohci_device_intr_open(struct usb_xfer *xfer)
{
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
uint16_t best;
uint16_t bit;
uint16_t x;
best = 0;
bit = OHCI_NO_EDS / 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
ohci_device_intr_close(struct usb_xfer *xfer)
{
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
sc->sc_intr_stat[xfer->qh_pos]--;
ohci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ohci_device_intr_enter(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_intr_start(struct usb_xfer *xfer)
{
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
/* setup TD's and QH */
ohci_setup_standard_chain(xfer, &sc->sc_intr_p_last[xfer->qh_pos]);
/* put transfer on interrupt queue */
ohci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ohci_device_intr_methods =
{
.open = ohci_device_intr_open,
.close = ohci_device_intr_close,
.enter = ohci_device_intr_enter,
.start = ohci_device_intr_start,
};
/*------------------------------------------------------------------------*
* ohci isochronous support
*------------------------------------------------------------------------*/
static void
ohci_device_isoc_open(struct usb_xfer *xfer)
{
return;
}
static void
ohci_device_isoc_close(struct usb_xfer *xfer)
{
/**/
ohci_device_done(xfer, USB_ERR_CANCELLED);
}
static void
ohci_device_isoc_enter(struct usb_xfer *xfer)
{
struct usb_page_search buf_res;
ohci_softc_t *sc = OHCI_BUS2SC(xfer->xroot->bus);
struct ohci_hcca *hcca;
uint32_t buf_offset;
uint32_t nframes;
uint32_t ed_flags;
uint32_t *plen;
uint16_t itd_offset[OHCI_ITD_NOFFSET];
uint16_t length;
uint8_t ncur;
ohci_itd_t *td;
ohci_itd_t *td_last = NULL;
ohci_ed_t *ed;
hcca = ohci_get_hcca(sc);
nframes = le32toh(hcca->hcca_frame_number);
DPRINTFN(6, "xfer=%p isoc_next=%u nframes=%u hcca_fn=%u\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes, nframes);
if ((xfer->endpoint->is_synced == 0) ||
(((nframes - xfer->endpoint->isoc_next) & 0xFFFF) < xfer->nframes) ||
(((xfer->endpoint->isoc_next - nframes) & 0xFFFF) >= 128)) {
/*
* 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) & 0xFFFF;
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) & 0xFFFF);
/*
* 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;
ncur = 0;
length = 0;
while (nframes--) {
if (td == NULL) {
panic("%s:%d: out of TD's\n",
__FUNCTION__, __LINE__);
}
itd_offset[ncur] = length;
buf_offset += *plen;
length += *plen;
plen++;
ncur++;
if ( /* check if the ITD is full */
(ncur == OHCI_ITD_NOFFSET) ||
/* check if we have put more than 4K into the ITD */
(length & 0xF000) ||
/* check if it is the last frame */
(nframes == 0)) {
/* fill current ITD */
td->itd_flags = htole32(
OHCI_ITD_NOCC |
OHCI_ITD_SET_SF(xfer->endpoint->isoc_next) |
OHCI_ITD_NOINTR |
OHCI_ITD_SET_FC(ncur));
td->frames = ncur;
xfer->endpoint->isoc_next += ncur;
if (length == 0) {
/* all zero */
td->itd_bp0 = 0;
td->itd_be = ~0;
while (ncur--) {
td->itd_offset[ncur] =
htole16(OHCI_ITD_MK_OFFS(0));
}
} else {
usbd_get_page(xfer->frbuffers, buf_offset - length, &buf_res);
length = OHCI_PAGE_MASK(buf_res.physaddr);
buf_res.physaddr =
OHCI_PAGE(buf_res.physaddr);
td->itd_bp0 = htole32(buf_res.physaddr);
usbd_get_page(xfer->frbuffers, buf_offset - 1, &buf_res);
td->itd_be = htole32(buf_res.physaddr);
while (ncur--) {
itd_offset[ncur] += length;
itd_offset[ncur] =
OHCI_ITD_MK_OFFS(itd_offset[ncur]);
td->itd_offset[ncur] =
htole16(itd_offset[ncur]);
}
}
ncur = 0;
length = 0;
td_last = td;
td = td->obj_next;
if (td) {
/* link the last TD with the next one */
td_last->itd_next = td->itd_self;
}
usb_pc_cpu_flush(td_last->page_cache);
}
}
/* update the last TD */
td_last->itd_flags &= ~htole32(OHCI_ITD_NOINTR);
td_last->itd_flags |= htole32(OHCI_ITD_SET_DI(0));
td_last->itd_next = 0;
usb_pc_cpu_flush(td_last->page_cache);
xfer->td_transfer_last = td_last;
#ifdef USB_DEBUG
if (ohcidebug > 8) {
DPRINTF("data before transfer:\n");
ohci_dump_itds(xfer->td_transfer_first);
}
#endif
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
if (UE_GET_DIR(xfer->endpointno) == UE_DIR_IN)
ed_flags = (OHCI_ED_DIR_IN | OHCI_ED_FORMAT_ISO);
else
ed_flags = (OHCI_ED_DIR_OUT | OHCI_ED_FORMAT_ISO);
ed_flags |= (OHCI_ED_SET_FA(xfer->address) |
OHCI_ED_SET_EN(UE_GET_ADDR(xfer->endpointno)) |
OHCI_ED_SET_MAXP(xfer->max_frame_size));
if (xfer->xroot->udev->speed == USB_SPEED_LOW) {
ed_flags |= OHCI_ED_SPEED;
}
ed->ed_flags = htole32(ed_flags);
td = xfer->td_transfer_first;
ed->ed_headp = td->itd_self;
/* isochronous transfers are not affected by suspend / resume */
/* the append function will flush the endpoint descriptor */
OHCI_APPEND_QH(ed, sc->sc_isoc_p_last);
}
static void
ohci_device_isoc_start(struct usb_xfer *xfer)
{
/* put transfer on interrupt queue */
ohci_transfer_intr_enqueue(xfer);
}
static const struct usb_pipe_methods ohci_device_isoc_methods =
{
.open = ohci_device_isoc_open,
.close = ohci_device_isoc_close,
.enter = ohci_device_isoc_enter,
.start = ohci_device_isoc_start,
};
/*------------------------------------------------------------------------*
* ohci root control support
*------------------------------------------------------------------------*
* Simulate a hardware hub by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const
struct usb_device_descriptor ohci_devd =
{
sizeof(struct usb_device_descriptor),
UDESC_DEVICE, /* type */
{0x00, 0x01}, /* USB version */
UDCLASS_HUB, /* class */
UDSUBCLASS_HUB, /* subclass */
UDPROTO_FSHUB, /* protocol */
64, /* max packet */
{0}, {0}, {0x00, 0x01}, /* device id */
1, 2, 0, /* string indexes */
1 /* # of configurations */
};
static const
struct ohci_config_desc ohci_confd =
{
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(ohci_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 | OHCI_INTR_ENDPT,
.bmAttributes = UE_INTERRUPT,
.wMaxPacketSize[0] = 32,/* max packet (255 ports) */
.bInterval = 255,
},
};
static const
struct usb_hub_descriptor ohci_hubd =
{
.bDescLength = 0, /* dynamic length */
.bDescriptorType = UDESC_HUB,
};
static usb_error_t
ohci_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
ohci_softc_t *sc = OHCI_BUS2SC(udev->bus);
const void *ptr;
const char *str_ptr;
uint32_t port;
uint32_t v;
uint16_t len;
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.temp;
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(ohci_devd);
ptr = (const void *)&ohci_devd;
break;
case UDESC_CONFIG:
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
len = sizeof(ohci_confd);
ptr = (const void *)&ohci_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 = "OHCI 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 >= OHCI_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 "
"port=%d feature=%d\n",
index, value);
if ((index < 1) ||
(index > sc->sc_noport)) {
err = USB_ERR_IOERROR;
goto done;
}
port = OHCI_RH_PORT_STATUS(index);
switch (value) {
case UHF_PORT_ENABLE:
OWRITE4(sc, port, UPS_CURRENT_CONNECT_STATUS);
break;
case UHF_PORT_SUSPEND:
OWRITE4(sc, port, UPS_OVERCURRENT_INDICATOR);
break;
case UHF_PORT_POWER:
/* Yes, writing to the LOW_SPEED bit clears power. */
OWRITE4(sc, port, UPS_LOW_SPEED);
break;
case UHF_C_PORT_CONNECTION:
OWRITE4(sc, port, UPS_C_CONNECT_STATUS << 16);
break;
case UHF_C_PORT_ENABLE:
OWRITE4(sc, port, UPS_C_PORT_ENABLED << 16);
break;
case UHF_C_PORT_SUSPEND:
OWRITE4(sc, port, UPS_C_SUSPEND << 16);
break;
case UHF_C_PORT_OVER_CURRENT:
OWRITE4(sc, port, UPS_C_OVERCURRENT_INDICATOR << 16);
break;
case UHF_C_PORT_RESET:
OWRITE4(sc, port, UPS_C_PORT_RESET << 16);
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
switch (value) {
case UHF_C_PORT_CONNECTION:
case UHF_C_PORT_ENABLE:
case UHF_C_PORT_SUSPEND:
case UHF_C_PORT_OVER_CURRENT:
case UHF_C_PORT_RESET:
/* enable RHSC interrupt if condition is cleared. */
if ((OREAD4(sc, port) >> 16) == 0)
ohci_rhsc_enable(sc);
break;
default:
break;
}
break;
case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
if ((value & 0xff) != 0) {
err = USB_ERR_IOERROR;
goto done;
}
v = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
sc->sc_hub_desc.hubd = ohci_hubd;
sc->sc_hub_desc.hubd.bNbrPorts = sc->sc_noport;
USETW(sc->sc_hub_desc.hubd.wHubCharacteristics,
(v & OHCI_NPS ? UHD_PWR_NO_SWITCH :
v & OHCI_PSM ? UHD_PWR_GANGED : UHD_PWR_INDIVIDUAL)
/* XXX overcurrent */
);
sc->sc_hub_desc.hubd.bPwrOn2PwrGood = OHCI_GET_POTPGT(v);
v = OREAD4(sc, OHCI_RH_DESCRIPTOR_B);
for (l = 0; l < sc->sc_noport; l++) {
if (v & 1) {
sc->sc_hub_desc.hubd.DeviceRemovable[l / 8] |= (1 << (l % 8));
}
v >>= 1;
}
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 = OREAD4(sc, OHCI_RH_PORT_STATUS(index));
DPRINTFN(9, "port status=0x%04x\n", v);
v &= ~UPS_PORT_MODE_DEVICE; /* force host mode */
USETW(sc->sc_hub_desc.ps.wPortStatus, v);
USETW(sc->sc_hub_desc.ps.wPortChange, v >> 16);
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 = OHCI_RH_PORT_STATUS(index);
switch (value) {
case UHF_PORT_ENABLE:
OWRITE4(sc, port, UPS_PORT_ENABLED);
break;
case UHF_PORT_SUSPEND:
OWRITE4(sc, port, UPS_SUSPEND);
break;
case UHF_PORT_RESET:
DPRINTFN(6, "reset port %d\n", index);
OWRITE4(sc, port, UPS_RESET);
for (v = 0;; v++) {
if (v < 12) {
usb_pause_mtx(&sc->sc_bus.bus_mtx,
USB_MS_TO_TICKS(usb_port_root_reset_delay));
if ((OREAD4(sc, port) & UPS_RESET) == 0) {
break;
}
} else {
err = USB_ERR_TIMEOUT;
goto done;
}
}
DPRINTFN(9, "ohci port %d reset, status = 0x%04x\n",
index, OREAD4(sc, port));
break;
case UHF_PORT_POWER:
DPRINTFN(3, "set port power %d\n", index);
OWRITE4(sc, port, UPS_PORT_POWER);
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
done:
*plength = len;
*pptr = ptr;
return (err);
}
static void
ohci_xfer_setup(struct usb_setup_params *parm)
{
struct usb_page_search page_info;
struct usb_page_cache *pc;
struct usb_xfer *xfer;
void *last_obj;
uint32_t ntd;
uint32_t nitd;
uint32_t nqh;
uint32_t n;
xfer = parm->curr_xfer;
parm->hc_max_packet_size = 0x500;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = OHCI_PAGE_SIZE;
/*
* calculate ntd and nqh
*/
if (parm->methods == &ohci_device_ctrl_methods) {
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nitd = 0;
ntd = ((2 * xfer->nframes) + 1 /* STATUS */
+ (xfer->max_data_length / xfer->max_hc_frame_size));
nqh = 1;
} else if (parm->methods == &ohci_device_bulk_methods) {
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nitd = 0;
ntd = ((2 * xfer->nframes)
+ (xfer->max_data_length / xfer->max_hc_frame_size));
nqh = 1;
} else if (parm->methods == &ohci_device_intr_methods) {
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nitd = 0;
ntd = ((2 * xfer->nframes)
+ (xfer->max_data_length / xfer->max_hc_frame_size));
nqh = 1;
} else if (parm->methods == &ohci_device_isoc_methods) {
xfer->flags_int.bdma_enable = 1;
usbd_transfer_setup_sub(parm);
nitd = ((xfer->max_data_length / OHCI_PAGE_SIZE) +
howmany(xfer->nframes, OHCI_ITD_NOFFSET) +
1 /* EXTRA */ );
ntd = 0;
nqh = 1;
} else {
usbd_transfer_setup_sub(parm);
nitd = 0;
ntd = 0;
nqh = 0;
}
alloc_dma_set:
if (parm->err) {
return;
}
last_obj = NULL;
if (usbd_transfer_setup_sub_malloc(
parm, &pc, sizeof(ohci_td_t),
OHCI_TD_ALIGN, ntd)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != ntd; n++) {
ohci_td_t *td;
usbd_get_page(pc + n, 0, &page_info);
td = page_info.buffer;
/* init TD */
td->td_self = htole32(page_info.physaddr);
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(ohci_itd_t),
OHCI_ITD_ALIGN, nitd)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nitd; n++) {
ohci_itd_t *itd;
usbd_get_page(pc + n, 0, &page_info);
itd = page_info.buffer;
/* init TD */
itd->itd_self = htole32(page_info.physaddr);
itd->obj_next = last_obj;
itd->page_cache = pc + n;
last_obj = itd;
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(ohci_ed_t),
OHCI_ED_ALIGN, nqh)) {
parm->err = USB_ERR_NOMEM;
return;
}
if (parm->buf) {
for (n = 0; n != nqh; n++) {
ohci_ed_t *ed;
usbd_get_page(pc + n, 0, &page_info);
ed = page_info.buffer;
/* init QH */
ed->ed_self = htole32(page_info.physaddr);
ed->obj_next = last_obj;
ed->page_cache = pc + n;
last_obj = ed;
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
ohci_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
ohci_softc_t *sc = OHCI_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) {
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_CONTROL:
ep->methods = &ohci_device_ctrl_methods;
break;
case UE_INTERRUPT:
ep->methods = &ohci_device_intr_methods;
break;
case UE_ISOCHRONOUS:
if (udev->speed == USB_SPEED_FULL) {
ep->methods = &ohci_device_isoc_methods;
}
break;
case UE_BULK:
ep->methods = &ohci_device_bulk_methods;
break;
default:
/* do nothing */
break;
}
}
}
static void
ohci_xfer_unsetup(struct usb_xfer *xfer)
{
return;
}
static void
ohci_get_dma_delay(struct usb_device *udev, uint32_t *pus)
{
/*
* Wait until hardware has finished any possible use of the
* transfer descriptor(s) and QH
*/
*pus = (1125); /* microseconds */
}
static void
ohci_device_resume(struct usb_device *udev)
{
struct ohci_softc *sc = OHCI_BUS2SC(udev->bus);
struct usb_xfer *xfer;
const struct usb_pipe_methods *methods;
ohci_ed_t *ed;
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;
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
if (methods == &ohci_device_bulk_methods) {
OHCI_APPEND_QH(ed, sc->sc_bulk_p_last);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF);
}
if (methods == &ohci_device_ctrl_methods) {
OHCI_APPEND_QH(ed, sc->sc_ctrl_p_last);
OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
}
if (methods == &ohci_device_intr_methods) {
OHCI_APPEND_QH(ed, sc->sc_intr_p_last[xfer->qh_pos]);
}
}
}
USB_BUS_UNLOCK(udev->bus);
return;
}
static void
ohci_device_suspend(struct usb_device *udev)
{
struct ohci_softc *sc = OHCI_BUS2SC(udev->bus);
struct usb_xfer *xfer;
const struct usb_pipe_methods *methods;
ohci_ed_t *ed;
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;
ed = xfer->qh_start[xfer->flags_int.curr_dma_set];
if (methods == &ohci_device_bulk_methods) {
OHCI_REMOVE_QH(ed, sc->sc_bulk_p_last);
}
if (methods == &ohci_device_ctrl_methods) {
OHCI_REMOVE_QH(ed, sc->sc_ctrl_p_last);
}
if (methods == &ohci_device_intr_methods) {
OHCI_REMOVE_QH(ed, sc->sc_intr_p_last[xfer->qh_pos]);
}
}
}
USB_BUS_UNLOCK(udev->bus);
return;
}
static void
ohci_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct ohci_softc *sc = OHCI_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
case USB_HW_POWER_SHUTDOWN:
ohci_suspend(sc);
break;
case USB_HW_POWER_RESUME:
ohci_resume(sc);
break;
default:
break;
}
}
static void
ohci_set_hw_power(struct usb_bus *bus)
{
struct ohci_softc *sc = OHCI_BUS2SC(bus);
uint32_t temp;
uint32_t flags;
DPRINTF("\n");
USB_BUS_LOCK(bus);
flags = bus->hw_power_state;
temp = OREAD4(sc, OHCI_CONTROL);
temp &= ~(OHCI_PLE | OHCI_IE | OHCI_CLE | OHCI_BLE);
if (flags & USB_HW_POWER_CONTROL)
temp |= OHCI_CLE;
if (flags & USB_HW_POWER_BULK)
temp |= OHCI_BLE;
if (flags & USB_HW_POWER_INTERRUPT)
temp |= OHCI_PLE;
if (flags & USB_HW_POWER_ISOC)
temp |= OHCI_IE | OHCI_PLE;
OWRITE4(sc, OHCI_CONTROL, temp);
USB_BUS_UNLOCK(bus);
return;
}
static const struct usb_bus_methods ohci_bus_methods =
{
.endpoint_init = ohci_ep_init,
.xfer_setup = ohci_xfer_setup,
.xfer_unsetup = ohci_xfer_unsetup,
.get_dma_delay = ohci_get_dma_delay,
.device_resume = ohci_device_resume,
.device_suspend = ohci_device_suspend,
.set_hw_power = ohci_set_hw_power,
.set_hw_power_sleep = ohci_set_hw_power_sleep,
.roothub_exec = ohci_roothub_exec,
.xfer_poll = ohci_do_poll,
};
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