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freebsd-skq/sys/dev/usb/controller/dwc_otg.c
Hans Petter Selasky 6d917491f5 Fix compiler warnings, mostly signed issues, 
when USB modules are compiled with WARNS=9.

MFC after:	1 weeks
2012-04-02 10:50:42 +00:00

2635 lines
59 KiB
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/*-
* Copyright (c) 2012 Hans Petter Selasky. 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.
*/
/*
* This file contains the driver for the DesignWare series USB 2.0 OTG
* Controller. This driver currently only supports the device mode of
* the USB hardware.
*/
/*
* LIMITATION: Drivers must be bound to all OUT endpoints in the
* active configuration for this driver to work properly. Blocking any
* OUT endpoint will block all OUT endpoints including the control
* endpoint. Usually this is not a problem.
*/
/*
* NOTE: Writing to non-existing registers appears to cause an
* internal reset.
*/
#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/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 dwc_otg_debug
#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/dwc_otg.h>
#define DWC_OTG_BUS2SC(bus) \
((struct dwc_otg_softc *)(((uint8_t *)(bus)) - \
((uint8_t *)&(((struct dwc_otg_softc *)0)->sc_bus))))
#define DWC_OTG_PC2SC(pc) \
DWC_OTG_BUS2SC(USB_DMATAG_TO_XROOT((pc)->tag_parent)->bus)
#define DWC_OTG_MSK_GINT_ENABLED \
(DWC_OTG_MSK_GINT_ENUM_DONE | \
DWC_OTG_MSK_GINT_USB_RESET | \
DWC_OTG_MSK_GINT_USB_SUSPEND | \
DWC_OTG_MSK_GINT_INEP | \
DWC_OTG_MSK_GINT_RXFLVL | \
DWC_OTG_MSK_GINT_SESSREQINT)
#define DWC_OTG_USE_HSIC 0
#ifdef USB_DEBUG
static int dwc_otg_debug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, dwc_otg, CTLFLAG_RW, 0, "USB DWC OTG");
SYSCTL_INT(_hw_usb_dwc_otg, OID_AUTO, debug, CTLFLAG_RW,
&dwc_otg_debug, 0, "DWC OTG debug level");
#endif
#define DWC_OTG_INTR_ENDPT 1
/* prototypes */
struct usb_bus_methods dwc_otg_bus_methods;
struct usb_pipe_methods dwc_otg_device_non_isoc_methods;
struct usb_pipe_methods dwc_otg_device_isoc_fs_methods;
static dwc_otg_cmd_t dwc_otg_setup_rx;
static dwc_otg_cmd_t dwc_otg_data_rx;
static dwc_otg_cmd_t dwc_otg_data_tx;
static dwc_otg_cmd_t dwc_otg_data_tx_sync;
static void dwc_otg_device_done(struct usb_xfer *, usb_error_t);
static void dwc_otg_do_poll(struct usb_bus *);
static void dwc_otg_standard_done(struct usb_xfer *);
static void dwc_otg_root_intr(struct dwc_otg_softc *sc);
/*
* Here is a configuration that the chip supports.
*/
static const struct usb_hw_ep_profile dwc_otg_ep_profile[1] = {
[0] = {
.max_in_frame_size = 64,/* fixed */
.max_out_frame_size = 64, /* fixed */
.is_simplex = 1,
.support_control = 1,
}
};
static void
dwc_otg_get_hw_ep_profile(struct usb_device *udev,
const struct usb_hw_ep_profile **ppf, uint8_t ep_addr)
{
struct dwc_otg_softc *sc;
sc = DWC_OTG_BUS2SC(udev->bus);
if (ep_addr < sc->sc_dev_ep_max)
*ppf = &sc->sc_hw_ep_profile[ep_addr].usb;
else
*ppf = NULL;
}
static int
dwc_otg_init_fifo(struct dwc_otg_softc *sc)
{
struct dwc_otg_profile *pf;
uint32_t fifo_size;
uint32_t fifo_regs;
uint32_t tx_start;
uint8_t x;
fifo_size = sc->sc_fifo_size;
fifo_regs = 4 * (sc->sc_dev_ep_max + sc->sc_dev_in_ep_max);
if (fifo_size >= fifo_regs)
fifo_size -= fifo_regs;
else
fifo_size = 0;
/* split equally for IN and OUT */
fifo_size /= 2;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRXFSIZ, fifo_size / 4);
/* align to 4-bytes */
fifo_size &= ~3;
tx_start = fifo_size;
if (fifo_size < 0x40) {
DPRINTFN(-1, "Not enough data space for EP0 FIFO.\n");
USB_BUS_UNLOCK(&sc->sc_bus);
return (EINVAL);
}
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GNPTXFSIZ, (0x10 << 16) | (tx_start / 4));
fifo_size -= 0x40;
tx_start += 0x40;
/* setup control endpoint profile */
sc->sc_hw_ep_profile[0].usb = dwc_otg_ep_profile[0];
for (x = 1; x != sc->sc_dev_ep_max; x++) {
pf = sc->sc_hw_ep_profile + x;
pf->usb.max_out_frame_size = 1024 * 3;
pf->usb.is_simplex = 0; /* assume duplex */
pf->usb.support_bulk = 1;
pf->usb.support_interrupt = 1;
pf->usb.support_isochronous = 1;
pf->usb.support_out = 1;
if (x < sc->sc_dev_in_ep_max) {
uint32_t limit;
limit = (x == 1) ? DWC_OTG_MAX_TXN :
(DWC_OTG_MAX_TXN / 2);
if (fifo_size >= limit) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPTXF(x),
((limit / 4) << 16) |
(tx_start / 4));
tx_start += limit;
fifo_size -= limit;
pf->usb.max_in_frame_size = 0x200;
pf->usb.support_in = 1;
pf->max_buffer = limit;
} else if (fifo_size >= 0x80) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPTXF(x),
((0x80 / 4) << 16) | (tx_start / 4));
tx_start += 0x80;
fifo_size -= 0x80;
pf->usb.max_in_frame_size = 0x40;
pf->usb.support_in = 1;
} else {
pf->usb.is_simplex = 1;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPTXF(x),
(0x0 << 16) | (tx_start / 4));
}
} else {
pf->usb.is_simplex = 1;
}
DPRINTF("FIFO%d = IN:%d / OUT:%d\n", x,
pf->usb.max_in_frame_size,
pf->usb.max_out_frame_size);
}
/* reset RX FIFO */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRSTCTL,
DWC_OTG_MSK_GRSTCTL_RXFFLUSH);
/* reset all TX FIFOs */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRSTCTL,
DWC_OTG_MSK_GRSTCTL_TXFIFO(0x10) |
DWC_OTG_MSK_GRSTCTL_TXFFLUSH);
return (0);
}
static void
dwc_otg_clocks_on(struct dwc_otg_softc *sc)
{
if (sc->sc_flags.clocks_off &&
sc->sc_flags.port_powered) {
DPRINTFN(5, "\n");
/* TODO - platform specific */
sc->sc_flags.clocks_off = 0;
}
}
static void
dwc_otg_clocks_off(struct dwc_otg_softc *sc)
{
if (!sc->sc_flags.clocks_off) {
DPRINTFN(5, "\n");
/* TODO - platform specific */
sc->sc_flags.clocks_off = 1;
}
}
static void
dwc_otg_pull_up(struct dwc_otg_softc *sc)
{
uint32_t temp;
/* pullup D+, if possible */
if (!sc->sc_flags.d_pulled_up &&
sc->sc_flags.port_powered) {
sc->sc_flags.d_pulled_up = 1;
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DCTL);
temp &= ~DWC_OTG_MSK_DCTL_SOFT_DISC;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL, temp);
}
}
static void
dwc_otg_pull_down(struct dwc_otg_softc *sc)
{
uint32_t temp;
/* pulldown D+, if possible */
if (sc->sc_flags.d_pulled_up) {
sc->sc_flags.d_pulled_up = 0;
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DCTL);
temp |= DWC_OTG_MSK_DCTL_SOFT_DISC;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL, temp);
}
}
static void
dwc_otg_resume_irq(struct dwc_otg_softc *sc)
{
if (sc->sc_flags.status_suspend) {
/* update status bits */
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 1;
/*
* Disable resume interrupt and enable suspend
* interrupt:
*/
sc->sc_irq_mask &= ~DWC_OTG_MSK_GINT_WKUPINT;
sc->sc_irq_mask |= DWC_OTG_MSK_GINT_USB_SUSPEND;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
}
static void
dwc_otg_wakeup_peer(struct dwc_otg_softc *sc)
{
uint32_t temp;
if (!sc->sc_flags.status_suspend)
return;
DPRINTFN(5, "Remote wakeup\n");
/* enable remote wakeup signalling */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DCTL);
temp |= DWC_OTG_MSK_DCTL_REMOTE_WAKEUP;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL, temp);
/* Wait 8ms for remote wakeup to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 125);
temp &= ~DWC_OTG_MSK_DCTL_REMOTE_WAKEUP;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL, temp);
/* need to fake resume IRQ */
dwc_otg_resume_irq(sc);
}
static void
dwc_otg_set_address(struct dwc_otg_softc *sc, uint8_t addr)
{
uint32_t temp;
DPRINTFN(5, "addr=%d\n", addr);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DCFG);
temp &= ~DWC_OTG_MSK_DCFG_SET_DEV_ADDR(0x7F);
temp |= DWC_OTG_MSK_DCFG_SET_DEV_ADDR(addr);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCFG, temp);
}
static void
dwc_otg_common_rx_ack(struct dwc_otg_softc *sc)
{
DPRINTFN(5, "RX status clear\n");
/* enable RX FIFO level interrupt */
sc->sc_irq_mask |= DWC_OTG_MSK_GINT_RXFLVL;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
/* clear cached status */
sc->sc_last_rx_status = 0;
}
static uint8_t
dwc_otg_setup_rx(struct dwc_otg_td *td)
{
struct dwc_otg_softc *sc;
struct usb_device_request req __aligned(4);
uint32_t temp;
uint16_t count;
/* get pointer to softc */
sc = DWC_OTG_PC2SC(td->pc);
/* check endpoint status */
if (sc->sc_last_rx_status == 0)
goto not_complete;
if (DWC_OTG_MSK_GRXSTS_GET_CHANNEL(sc->sc_last_rx_status) != 0)
goto not_complete;
if ((sc->sc_last_rx_status & DWC_OTG_MSK_GRXSTS_PID) !=
DWC_OTG_MSK_GRXSTS_PID_DATA0) {
/* release FIFO */
dwc_otg_common_rx_ack(sc);
goto not_complete;
}
if ((sc->sc_last_rx_status & DWC_OTG_MSK_GRXSTS_PACKET_STS) !=
DWC_OTG_MSK_GRXSTS_DEV_STP_DATA) {
/* release FIFO */
dwc_otg_common_rx_ack(sc);
goto not_complete;
}
DPRINTFN(5, "GRXSTSR=0x%08x\n", sc->sc_last_rx_status);
/* clear did stall */
td->did_stall = 0;
/* get the packet byte count */
count = DWC_OTG_MSK_GRXSTS_GET_BYTE_CNT(sc->sc_last_rx_status);
/* verify data length */
if (count != td->remainder) {
DPRINTFN(0, "Invalid SETUP packet "
"length, %d bytes\n", count);
/* release FIFO */
dwc_otg_common_rx_ack(sc);
goto not_complete;
}
if (count != sizeof(req)) {
DPRINTFN(0, "Unsupported SETUP packet "
"length, %d bytes\n", count);
/* release FIFO */
dwc_otg_common_rx_ack(sc);
goto not_complete;
}
/* copy in control request */
memcpy(&req, sc->sc_rx_bounce_buffer, sizeof(req));
/* copy data into real buffer */
usbd_copy_in(td->pc, 0, &req, sizeof(req));
td->offset = sizeof(req);
td->remainder = 0;
/* sneak peek the set address */
if ((req.bmRequestType == UT_WRITE_DEVICE) &&
(req.bRequest == UR_SET_ADDRESS)) {
/* must write address before ZLP */
dwc_otg_set_address(sc, req.wValue[0] & 0x7F);
}
/* don't send any data by default */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPTSIZ(0),
DWC_OTG_MSK_DXEPTSIZ_SET_NPKT(0) |
DWC_OTG_MSK_DXEPTSIZ_SET_NBYTES(0));
temp = sc->sc_in_ctl[0];
/* enable IN endpoint */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(0),
temp | DWC_OTG_MSK_DIEPCTL_ENABLE);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(0),
temp | DWC_OTG_MSK_DIEPCTL_SET_NAK);
/* reset IN endpoint buffer */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRSTCTL,
DWC_OTG_MSK_GRSTCTL_TXFIFO(0) |
DWC_OTG_MSK_GRSTCTL_TXFFLUSH);
/* acknowledge RX status */
dwc_otg_common_rx_ack(sc);
return (0); /* complete */
not_complete:
/* abort any ongoing transfer, before enabling again */
temp = sc->sc_out_ctl[0];
temp |= DWC_OTG_MSK_DOEPCTL_ENABLE |
DWC_OTG_MSK_DOEPCTL_SET_NAK;
/* enable OUT endpoint */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPCTL(0), temp);
if (!td->did_stall) {
td->did_stall = 1;
DPRINTFN(5, "stalling IN and OUT direction\n");
/* set stall after enabling endpoint */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPCTL(0),
temp | DWC_OTG_MSK_DOEPCTL_STALL);
temp = sc->sc_in_ctl[0];
/* set stall assuming endpoint is enabled */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(0),
temp | DWC_OTG_MSK_DIEPCTL_STALL);
}
/* setup number of buffers to receive */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPTSIZ(0),
DWC_OTG_MSK_DXEPTSIZ_SET_MULTI(3) |
DWC_OTG_MSK_DXEPTSIZ_SET_NPKT(1) |
DWC_OTG_MSK_DXEPTSIZ_SET_NBYTES(sizeof(req)));
return (1); /* not complete */
}
static uint8_t
dwc_otg_data_rx(struct dwc_otg_td *td)
{
struct dwc_otg_softc *sc;
uint32_t temp;
uint16_t count;
uint8_t got_short;
got_short = 0;
/* get pointer to softc */
sc = DWC_OTG_PC2SC(td->pc);
/* check endpoint status */
if (sc->sc_last_rx_status == 0)
goto not_complete;
if (DWC_OTG_MSK_GRXSTS_GET_CHANNEL(sc->sc_last_rx_status) != td->ep_no)
goto not_complete;
/* check for SETUP packet */
if ((sc->sc_last_rx_status & DWC_OTG_MSK_GRXSTS_PACKET_STS) ==
DWC_OTG_MSK_GRXSTS_DEV_STP_DATA) {
if (td->remainder == 0) {
/*
* We are actually complete and have
* received the next SETUP
*/
DPRINTFN(5, "faking complete\n");
return (0); /* complete */
}
/*
* USB Host Aborted the transfer.
*/
td->error = 1;
return (0); /* complete */
}
if ((sc->sc_last_rx_status & DWC_OTG_MSK_GRXSTS_PACKET_STS) !=
DWC_OTG_MSK_GRXSTS_DEV_OUT_DATA) {
/* release FIFO */
dwc_otg_common_rx_ack(sc);
goto not_complete;
}
/* get the packet byte count */
count = DWC_OTG_MSK_GRXSTS_GET_BYTE_CNT(sc->sc_last_rx_status);
/* verify the packet byte count */
if (count != td->max_packet_size) {
if (count < td->max_packet_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
/* release FIFO */
dwc_otg_common_rx_ack(sc);
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
/* release FIFO */
dwc_otg_common_rx_ack(sc);
return (0); /* we are complete */
}
usbd_copy_in(td->pc, td->offset, sc->sc_rx_bounce_buffer, count);
td->remainder -= count;
td->offset += count;
/* release FIFO */
dwc_otg_common_rx_ack(sc);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
return (0);
}
/* else need to receive a zero length packet */
}
not_complete:
temp = sc->sc_out_ctl[td->ep_no];
temp |= DWC_OTG_MSK_DOEPCTL_ENABLE |
DWC_OTG_MSK_DOEPCTL_CLR_NAK;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPCTL(td->ep_no), temp);
/* enable SETUP and transfer complete interrupt */
if (td->ep_no == 0) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPTSIZ(0),
DWC_OTG_MSK_DXEPTSIZ_SET_NPKT(1) |
DWC_OTG_MSK_DXEPTSIZ_SET_NBYTES(td->max_packet_size));
} else {
/* allow reception of multiple packets */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPTSIZ(td->ep_no),
DWC_OTG_MSK_DXEPTSIZ_SET_MULTI(1) |
DWC_OTG_MSK_DXEPTSIZ_SET_NPKT(4) |
DWC_OTG_MSK_DXEPTSIZ_SET_NBYTES(4 *
((td->max_packet_size + 3) & ~3)));
}
return (1); /* not complete */
}
static uint8_t
dwc_otg_data_tx(struct dwc_otg_td *td)
{
struct dwc_otg_softc *sc;
uint32_t max_buffer;
uint32_t count;
uint32_t fifo_left;
uint32_t mpkt;
uint32_t temp;
uint8_t to;
to = 3; /* don't loop forever! */
/* get pointer to softc */
sc = DWC_OTG_PC2SC(td->pc);
max_buffer = sc->sc_hw_ep_profile[td->ep_no].max_buffer;
repeat:
/* check for for endpoint 0 data */
temp = sc->sc_last_rx_status;
if ((td->ep_no == 0) && (temp != 0) &&
(DWC_OTG_MSK_GRXSTS_GET_CHANNEL(temp) == 0)) {
if ((temp & DWC_OTG_MSK_GRXSTS_PACKET_STS) !=
DWC_OTG_MSK_GRXSTS_DEV_STP_DATA) {
/* dump data - wrong direction */
dwc_otg_common_rx_ack(sc);
} else {
/*
* The current transfer was cancelled
* by the USB Host:
*/
td->error = 1;
return (0); /* complete */
}
}
/* fill in more TX data, if possible */
if (td->tx_bytes != 0) {
uint16_t cpkt;
/* check if packets have been transferred */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DIEPTSIZ(td->ep_no));
/* get current packet number */
cpkt = DWC_OTG_MSK_DXEPTSIZ_GET_NPKT(temp);
if (cpkt >= td->npkt) {
fifo_left = 0;
} else {
if (max_buffer != 0) {
fifo_left = (td->npkt - cpkt) *
td->max_packet_size;
if (fifo_left > max_buffer)
fifo_left = max_buffer;
} else {
fifo_left = td->max_packet_size;
}
}
count = td->tx_bytes;
if (count > fifo_left)
count = fifo_left;
if (count != 0) {
/* clear topmost word before copy */
sc->sc_tx_bounce_buffer[(count - 1) / 4] = 0;
/* copy out data */
usbd_copy_out(td->pc, td->offset,
sc->sc_tx_bounce_buffer, count);
/* transfer data into FIFO */
bus_space_write_region_4(sc->sc_io_tag, sc->sc_io_hdl,
DWC_OTG_REG_DFIFO(td->ep_no),
sc->sc_tx_bounce_buffer, (count + 3) / 4);
td->tx_bytes -= count;
td->remainder -= count;
td->offset += count;
td->npkt = cpkt;
}
if (td->tx_bytes != 0)
goto not_complete;
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt)
return (0); /* complete */
/* else we need to transmit a short packet */
}
}
if (!to--)
goto not_complete;
/* check if not all packets have been transferred */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DIEPTSIZ(td->ep_no));
if (DWC_OTG_MSK_DXEPTSIZ_GET_NPKT(temp) != 0) {
DPRINTFN(5, "busy ep=%d npkt=%d DIEPTSIZ=0x%08x "
"DIEPCTL=0x%08x\n", td->ep_no,
DWC_OTG_MSK_DXEPTSIZ_GET_NPKT(temp),
temp, DWC_OTG_READ_4(sc, DWC_OTG_REG_DIEPCTL(td->ep_no)));
goto not_complete;
}
DPRINTFN(5, "rem=%u ep=%d\n", td->remainder, td->ep_no);
/* try to optimise by sending more data */
if ((max_buffer != 0) && ((td->max_packet_size & 3) == 0)) {
/* send multiple packets at the same time */
mpkt = max_buffer / td->max_packet_size;
if (mpkt > 0x3FE)
mpkt = 0x3FE;
count = td->remainder;
if (count > 0x7FFFFF)
count = 0x7FFFFF - (0x7FFFFF % td->max_packet_size);
td->npkt = count / td->max_packet_size;
/*
* NOTE: We could use 0x3FE instead of "mpkt" in the
* check below to get more throughput, but then we
* have a dependency towards non-generic chip features
* to disable the TX-FIFO-EMPTY interrupts on a per
* endpoint basis. Increase the maximum buffer size of
* the IN endpoint to increase the performance.
*/
if (td->npkt > mpkt) {
td->npkt = mpkt;
count = td->max_packet_size * mpkt;
} else if ((count == 0) || (count % td->max_packet_size)) {
/* we are transmitting a short packet */
td->npkt++;
td->short_pkt = 1;
}
} else {
/* send one packet at a time */
mpkt = 1;
count = td->max_packet_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
td->npkt = 1;
}
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPTSIZ(td->ep_no),
DWC_OTG_MSK_DXEPTSIZ_SET_MULTI(1) |
DWC_OTG_MSK_DXEPTSIZ_SET_NPKT(td->npkt) |
DWC_OTG_MSK_DXEPTSIZ_SET_NBYTES(count));
/* make room for buffering */
td->npkt += mpkt;
temp = sc->sc_in_ctl[td->ep_no];
/* must enable before writing data to FIFO */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(td->ep_no), temp |
DWC_OTG_MSK_DIEPCTL_ENABLE |
DWC_OTG_MSK_DIEPCTL_CLR_NAK);
td->tx_bytes = count;
/* check remainder */
if (td->tx_bytes == 0 &&
td->remainder == 0) {
if (td->short_pkt)
return (0); /* complete */
/* else we need to transmit a short packet */
}
goto repeat;
not_complete:
return (1); /* not complete */
}
static uint8_t
dwc_otg_data_tx_sync(struct dwc_otg_td *td)
{
struct dwc_otg_softc *sc;
uint32_t temp;
/* get pointer to softc */
sc = DWC_OTG_PC2SC(td->pc);
/*
* If all packets are transferred we are complete:
*/
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DIEPTSIZ(td->ep_no));
/* check that all packets have been transferred */
if (DWC_OTG_MSK_DXEPTSIZ_GET_NPKT(temp) != 0) {
DPRINTFN(5, "busy ep=%d\n", td->ep_no);
goto not_complete;
}
return (0);
not_complete:
/* we only want to know if there is a SETUP packet or free IN packet */
temp = sc->sc_last_rx_status;
if ((td->ep_no == 0) && (temp != 0) &&
(DWC_OTG_MSK_GRXSTS_GET_CHANNEL(temp) == 0)) {
if ((temp & DWC_OTG_MSK_GRXSTS_PACKET_STS) ==
DWC_OTG_MSK_GRXSTS_DEV_STP_DATA) {
DPRINTFN(5, "faking complete\n");
/*
* Race condition: We are complete!
*/
return (0);
} else {
/* dump data - wrong direction */
dwc_otg_common_rx_ack(sc);
}
}
return (1); /* not complete */
}
static uint8_t
dwc_otg_xfer_do_fifo(struct usb_xfer *xfer)
{
struct dwc_otg_td *td;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
while (1) {
if ((td->func) (td)) {
/* operation in progress */
break;
}
if (((void *)td) == xfer->td_transfer_last) {
goto done;
}
if (td->error) {
goto done;
} else if (td->remainder > 0) {
/*
* We had a short transfer. If there is no alternate
* next, stop processing !
*/
if (!td->alt_next)
goto done;
}
/*
* Fetch the next transfer descriptor and transfer
* some flags to the next transfer descriptor
*/
td = td->obj_next;
xfer->td_transfer_cache = td;
}
return (1); /* not complete */
done:
/* compute all actual lengths */
dwc_otg_standard_done(xfer);
return (0); /* complete */
}
static void
dwc_otg_interrupt_poll(struct dwc_otg_softc *sc)
{
struct usb_xfer *xfer;
uint32_t temp;
uint8_t got_rx_status;
repeat:
if (sc->sc_last_rx_status == 0) {
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GINTSTS);
if (temp & DWC_OTG_MSK_GINT_RXFLVL) {
/* pop current status */
sc->sc_last_rx_status =
DWC_OTG_READ_4(sc, DWC_OTG_REG_GRXSTSP);
}
if (sc->sc_last_rx_status != 0) {
uint8_t ep_no;
temp = DWC_OTG_MSK_GRXSTS_GET_BYTE_CNT(
sc->sc_last_rx_status);
ep_no = DWC_OTG_MSK_GRXSTS_GET_CHANNEL(
sc->sc_last_rx_status);
/* receive data, if any */
if (temp != 0) {
DPRINTF("Reading %d bytes from ep %d\n", temp, ep_no);
bus_space_read_region_4(sc->sc_io_tag, sc->sc_io_hdl,
DWC_OTG_REG_DFIFO(ep_no),
sc->sc_rx_bounce_buffer, (temp + 3) / 4);
}
temp = sc->sc_last_rx_status &
DWC_OTG_MSK_GRXSTS_PACKET_STS;
/* non-data messages we simply skip */
if (temp != DWC_OTG_MSK_GRXSTS_DEV_STP_DATA &&
temp != DWC_OTG_MSK_GRXSTS_DEV_OUT_DATA) {
dwc_otg_common_rx_ack(sc);
goto repeat;
}
/* check if we should dump the data */
if (!(sc->sc_active_out_ep & (1U << ep_no))) {
dwc_otg_common_rx_ack(sc);
goto repeat;
}
got_rx_status = 1;
DPRINTFN(5, "RX status = 0x%08x: ch=%d pid=%d bytes=%d sts=%d\n",
sc->sc_last_rx_status, ep_no,
(sc->sc_last_rx_status >> 15) & 3,
DWC_OTG_MSK_GRXSTS_GET_BYTE_CNT(sc->sc_last_rx_status),
(sc->sc_last_rx_status >> 17) & 15);
} else {
got_rx_status = 0;
}
} else {
uint8_t ep_no;
ep_no = DWC_OTG_MSK_GRXSTS_GET_CHANNEL(
sc->sc_last_rx_status);
/* check if we should dump the data */
if (!(sc->sc_active_out_ep & (1U << ep_no))) {
dwc_otg_common_rx_ack(sc);
goto repeat;
}
got_rx_status = 1;
}
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (!dwc_otg_xfer_do_fifo(xfer)) {
/* queue has been modified */
goto repeat;
}
}
if (got_rx_status) {
if (sc->sc_last_rx_status == 0)
goto repeat;
/* disable RX FIFO level interrupt */
sc->sc_irq_mask &= ~DWC_OTG_MSK_GINT_RXFLVL;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
}
}
static void
dwc_otg_vbus_interrupt(struct dwc_otg_softc *sc, uint8_t is_on)
{
DPRINTFN(5, "vbus = %u\n", is_on);
if (is_on) {
if (!sc->sc_flags.status_vbus) {
sc->sc_flags.status_vbus = 1;
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
} else {
if (sc->sc_flags.status_vbus) {
sc->sc_flags.status_vbus = 0;
sc->sc_flags.status_bus_reset = 0;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
}
}
void
dwc_otg_interrupt(struct dwc_otg_softc *sc)
{
uint32_t status;
USB_BUS_LOCK(&sc->sc_bus);
/* read and clear interrupt status */
status = DWC_OTG_READ_4(sc, DWC_OTG_REG_GINTSTS);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTSTS, status);
DPRINTFN(14, "GINTSTS=0x%08x\n", status);
if (status & DWC_OTG_MSK_GINT_USB_RESET) {
/* set correct state */
sc->sc_flags.status_bus_reset = 0;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
/* check for any bus state change interrupts */
if (status & DWC_OTG_MSK_GINT_ENUM_DONE) {
uint32_t temp;
DPRINTFN(5, "end of reset\n");
/* set correct state */
sc->sc_flags.status_bus_reset = 1;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
/* reset FIFOs */
dwc_otg_init_fifo(sc);
/* reset function address */
dwc_otg_set_address(sc, 0);
/* reset active endpoints */
sc->sc_active_out_ep = 1;
/* figure out enumeration speed */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DSTS);
if (DWC_OTG_MSK_DSTS_GET_ENUM_SPEED(temp) ==
DWC_OTG_MSK_DSTS_ENUM_SPEED_HI)
sc->sc_flags.status_high_speed = 1;
else
sc->sc_flags.status_high_speed = 0;
/* disable resume interrupt and enable suspend interrupt */
sc->sc_irq_mask &= ~DWC_OTG_MSK_GINT_WKUPINT;
sc->sc_irq_mask |= DWC_OTG_MSK_GINT_USB_SUSPEND;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
/*
* If resume and suspend is set at the same time we interpret
* that like RESUME. Resume is set when there is at least 3
* milliseconds of inactivity on the USB BUS.
*/
if (status & DWC_OTG_MSK_GINT_WKUPINT) {
DPRINTFN(5, "resume interrupt\n");
dwc_otg_resume_irq(sc);
} else if (status & DWC_OTG_MSK_GINT_USB_SUSPEND) {
DPRINTFN(5, "suspend interrupt\n");
if (!sc->sc_flags.status_suspend) {
/* update status bits */
sc->sc_flags.status_suspend = 1;
sc->sc_flags.change_suspend = 1;
/*
* Disable suspend interrupt and enable resume
* interrupt:
*/
sc->sc_irq_mask &= ~DWC_OTG_MSK_GINT_USB_SUSPEND;
sc->sc_irq_mask |= DWC_OTG_MSK_GINT_WKUPINT;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
/* complete root HUB interrupt endpoint */
dwc_otg_root_intr(sc);
}
}
/* check VBUS */
if (status & (DWC_OTG_MSK_GINT_USB_SUSPEND |
DWC_OTG_MSK_GINT_USB_RESET |
DWC_OTG_MSK_GINT_SESSREQINT)) {
uint32_t temp;
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GOTGCTL);
DPRINTFN(5, "GOTGCTL=0x%08x\n", temp);
dwc_otg_vbus_interrupt(sc,
(temp & DWC_OTG_MSK_GOTGCTL_BSESS_VALID) ? 1 : 0);
}
/* clear all IN endpoint interrupts */
if (status & DWC_OTG_MSK_GINT_INEP) {
uint32_t temp;
uint8_t x;
for (x = 0; x != sc->sc_dev_in_ep_max; x++) {
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DIEPINT(x));
if (temp & DWC_OTG_MSK_DIEP_XFER_COMPLETE) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPINT(x),
DWC_OTG_MSK_DIEP_XFER_COMPLETE);
}
}
}
#if 0
/* check if we should poll the FIFOs */
if (status & (DWC_OTG_MSK_GINT_RXFLVL | DWC_OTG_MSK_GINT_INEP))
#endif
/* poll FIFO(s) */
dwc_otg_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
dwc_otg_setup_standard_chain_sub(struct dwc_otg_std_temp *temp)
{
struct dwc_otg_td *td;
/* get current Transfer Descriptor */
td = temp->td_next;
temp->td = td;
/* prepare for next TD */
temp->td_next = td->obj_next;
/* fill out the Transfer Descriptor */
td->func = temp->func;
td->pc = temp->pc;
td->offset = temp->offset;
td->remainder = temp->len;
td->tx_bytes = 0;
td->error = 0;
td->npkt = 1;
td->did_stall = temp->did_stall;
td->short_pkt = temp->short_pkt;
td->alt_next = temp->setup_alt_next;
}
static void
dwc_otg_setup_standard_chain(struct usb_xfer *xfer)
{
struct dwc_otg_std_temp temp;
struct dwc_otg_td *td;
uint32_t x;
uint8_t need_sync;
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.max_frame_size = xfer->max_frame_size;
td = xfer->td_start[0];
xfer->td_transfer_first = td;
xfer->td_transfer_cache = td;
/* setup temp */
temp.pc = NULL;
temp.td = NULL;
temp.td_next = xfer->td_start[0];
temp.offset = 0;
temp.setup_alt_next = xfer->flags_int.short_frames_ok;
temp.did_stall = !xfer->flags_int.control_stall;
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
temp.func = &dwc_otg_setup_rx;
temp.len = xfer->frlengths[0];
temp.pc = xfer->frbuffers + 0;
temp.short_pkt = 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.setup_alt_next = 0;
}
dwc_otg_setup_standard_chain_sub(&temp);
}
x = 1;
} else {
x = 0;
}
if (x != xfer->nframes) {
if (xfer->endpointno & UE_DIR_IN) {
temp.func = &dwc_otg_data_tx;
need_sync = 1;
} else {
temp.func = &dwc_otg_data_rx;
need_sync = 0;
}
/* setup "pc" pointer */
temp.pc = xfer->frbuffers + x;
} else {
need_sync = 0;
}
while (x != xfer->nframes) {
/* DATA0 / DATA1 message */
temp.len = xfer->frlengths[x];
x++;
if (x == xfer->nframes) {
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_act) {
temp.setup_alt_next = 0;
}
} else {
temp.setup_alt_next = 0;
}
}
if (temp.len == 0) {
/* make sure that we send an USB packet */
temp.short_pkt = 0;
} else {
/* regular data transfer */
temp.short_pkt = (xfer->flags.force_short_xfer ? 0 : 1);
}
dwc_otg_setup_standard_chain_sub(&temp);
if (xfer->flags_int.isochronous_xfr) {
temp.offset += temp.len;
} else {
/* get next Page Cache pointer */
temp.pc = xfer->frbuffers + x;
}
}
if (xfer->flags_int.control_xfr) {
/* always setup a valid "pc" pointer for status and sync */
temp.pc = xfer->frbuffers + 0;
temp.len = 0;
temp.short_pkt = 0;
temp.setup_alt_next = 0;
/* check if we need to sync */
if (need_sync) {
/* we need a SYNC point after TX */
temp.func = &dwc_otg_data_tx_sync;
dwc_otg_setup_standard_chain_sub(&temp);
}
/* check if we should append a status stage */
if (!xfer->flags_int.control_act) {
/*
* Send a DATA1 message and invert the current
* endpoint direction.
*/
if (xfer->endpointno & UE_DIR_IN) {
temp.func = &dwc_otg_data_rx;
need_sync = 0;
} else {
temp.func = &dwc_otg_data_tx;
need_sync = 1;
}
dwc_otg_setup_standard_chain_sub(&temp);
if (need_sync) {
/* we need a SYNC point after TX */
temp.func = &dwc_otg_data_tx_sync;
dwc_otg_setup_standard_chain_sub(&temp);
}
}
} else {
/* check if we need to sync */
if (need_sync) {
temp.pc = xfer->frbuffers + 0;
temp.len = 0;
temp.short_pkt = 0;
temp.setup_alt_next = 0;
/* we need a SYNC point after TX */
temp.func = &dwc_otg_data_tx_sync;
dwc_otg_setup_standard_chain_sub(&temp);
}
}
/* must have at least one frame! */
td = temp.td;
xfer->td_transfer_last = td;
}
static void
dwc_otg_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 */
dwc_otg_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
dwc_otg_start_standard_chain(struct usb_xfer *xfer)
{
DPRINTFN(9, "\n");
/* poll one time - will turn on interrupts */
if (dwc_otg_xfer_do_fifo(xfer)) {
/* 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,
&dwc_otg_timeout, xfer->timeout);
}
}
}
static void
dwc_otg_root_intr(struct dwc_otg_softc *sc)
{
DPRINTFN(9, "\n");
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* set port bit */
sc->sc_hub_idata[0] = 0x02; /* we only have one port */
uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata,
sizeof(sc->sc_hub_idata));
}
static usb_error_t
dwc_otg_standard_done_sub(struct usb_xfer *xfer)
{
struct dwc_otg_td *td;
uint32_t len;
uint8_t error;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
do {
len = td->remainder;
if (xfer->aframes != xfer->nframes) {
/*
* Verify the length and subtract
* the remainder from "frlengths[]":
*/
if (len > xfer->frlengths[xfer->aframes]) {
td->error = 1;
} else {
xfer->frlengths[xfer->aframes] -= len;
}
}
/* Check for transfer error */
if (td->error) {
/* the transfer is finished */
error = 1;
td = NULL;
break;
}
/* Check for short transfer */
if (len > 0) {
if (xfer->flags_int.short_frames_ok) {
/* follow alt next */
if (td->alt_next) {
td = td->obj_next;
} else {
td = NULL;
}
} else {
/* the transfer is finished */
td = NULL;
}
error = 0;
break;
}
td = td->obj_next;
/* this USB frame is complete */
error = 0;
break;
} while (0);
/* update transfer cache */
xfer->td_transfer_cache = td;
return (error ?
USB_ERR_STALLED : USB_ERR_NORMAL_COMPLETION);
}
static void
dwc_otg_standard_done(struct usb_xfer *xfer)
{
usb_error_t err = 0;
DPRINTFN(13, "xfer=%p endpoint=%p transfer done\n",
xfer, xfer->endpoint);
/* reset scanner */
xfer->td_transfer_cache = xfer->td_transfer_first;
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
err = dwc_otg_standard_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = dwc_otg_standard_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 = dwc_otg_standard_done_sub(xfer);
}
done:
dwc_otg_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* dwc_otg_device_done
*
* NOTE: this function can be called more than one time on the
* same USB transfer!
*------------------------------------------------------------------------*/
static void
dwc_otg_device_done(struct usb_xfer *xfer, usb_error_t error)
{
DPRINTFN(9, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) {
DPRINTFN(15, "disabled interrupts!\n");
}
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
static void
dwc_otg_set_stall(struct usb_device *udev, struct usb_xfer *xfer,
struct usb_endpoint *ep, uint8_t *did_stall)
{
struct dwc_otg_softc *sc;
uint32_t temp;
uint32_t reg;
uint8_t ep_no;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
if (xfer) {
/* cancel any ongoing transfers */
dwc_otg_device_done(xfer, USB_ERR_STALLED);
}
sc = DWC_OTG_BUS2SC(udev->bus);
/* get endpoint address */
ep_no = ep->edesc->bEndpointAddress;
DPRINTFN(5, "endpoint=0x%x\n", ep_no);
if (ep_no & UE_DIR_IN) {
reg = DWC_OTG_REG_DIEPCTL(ep_no & UE_ADDR);
temp = sc->sc_in_ctl[ep_no & UE_ADDR];
} else {
reg = DWC_OTG_REG_DOEPCTL(ep_no & UE_ADDR);
temp = sc->sc_out_ctl[ep_no & UE_ADDR];
}
/* disable and stall endpoint */
DWC_OTG_WRITE_4(sc, reg, temp | DWC_OTG_MSK_DOEPCTL_DISABLE);
DWC_OTG_WRITE_4(sc, reg, temp | DWC_OTG_MSK_DOEPCTL_STALL);
/* clear active OUT ep */
if (!(ep_no & UE_DIR_IN)) {
sc->sc_active_out_ep &= ~(1U << (ep_no & UE_ADDR));
if (sc->sc_last_rx_status != 0 &&
(ep_no & UE_ADDR) == DWC_OTG_MSK_GRXSTS_GET_CHANNEL(
sc->sc_last_rx_status)) {
/* dump data */
dwc_otg_common_rx_ack(sc);
/* poll interrupt */
dwc_otg_interrupt_poll(sc);
}
}
}
static void
dwc_otg_clear_stall_sub(struct dwc_otg_softc *sc, uint32_t mps,
uint8_t ep_no, uint8_t ep_type, uint8_t ep_dir)
{
uint32_t reg;
uint32_t temp;
if (ep_type == UE_CONTROL) {
/* clearing stall is not needed */
return;
}
if (ep_dir) {
reg = DWC_OTG_REG_DIEPCTL(ep_no);
} else {
reg = DWC_OTG_REG_DOEPCTL(ep_no);
sc->sc_active_out_ep |= (1U << ep_no);
}
/* round up and mask away the multiplier count */
mps = (mps + 3) & 0x7FC;
if (ep_type == UE_BULK) {
temp = DWC_OTG_MSK_EP_SET_TYPE(
DWC_OTG_MSK_EP_TYPE_BULK) |
DWC_OTG_MSK_DIEPCTL_USB_AEP;
} else if (ep_type == UE_INTERRUPT) {
temp = DWC_OTG_MSK_EP_SET_TYPE(
DWC_OTG_MSK_EP_TYPE_INTERRUPT) |
DWC_OTG_MSK_DIEPCTL_USB_AEP;
} else {
temp = DWC_OTG_MSK_EP_SET_TYPE(
DWC_OTG_MSK_EP_TYPE_ISOC) |
DWC_OTG_MSK_DIEPCTL_USB_AEP;
}
temp |= DWC_OTG_MSK_DIEPCTL_MPS(mps);
temp |= DWC_OTG_MSK_DIEPCTL_FNUM(ep_no);
if (ep_dir)
sc->sc_in_ctl[ep_no] = temp;
else
sc->sc_out_ctl[ep_no] = temp;
DWC_OTG_WRITE_4(sc, reg, temp | DWC_OTG_MSK_DOEPCTL_DISABLE);
DWC_OTG_WRITE_4(sc, reg, temp | DWC_OTG_MSK_DOEPCTL_SET_DATA0);
DWC_OTG_WRITE_4(sc, reg, temp | DWC_OTG_MSK_DIEPCTL_SET_NAK);
/* we only reset the transmit FIFO */
if (ep_dir) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRSTCTL,
DWC_OTG_MSK_GRSTCTL_TXFIFO(ep_no) |
DWC_OTG_MSK_GRSTCTL_TXFFLUSH);
DWC_OTG_WRITE_4(sc,
DWC_OTG_REG_DIEPTSIZ(ep_no), 0);
}
/* poll interrupt */
dwc_otg_interrupt_poll(sc);
}
static void
dwc_otg_clear_stall(struct usb_device *udev, struct usb_endpoint *ep)
{
struct dwc_otg_softc *sc;
struct usb_endpoint_descriptor *ed;
DPRINTFN(5, "endpoint=%p\n", ep);
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
/* check mode */
if (udev->flags.usb_mode != USB_MODE_DEVICE) {
/* not supported */
return;
}
/* get softc */
sc = DWC_OTG_BUS2SC(udev->bus);
/* get endpoint descriptor */
ed = ep->edesc;
/* reset endpoint */
dwc_otg_clear_stall_sub(sc,
UGETW(ed->wMaxPacketSize),
(ed->bEndpointAddress & UE_ADDR),
(ed->bmAttributes & UE_XFERTYPE),
(ed->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT)));
}
static void
dwc_otg_device_state_change(struct usb_device *udev)
{
struct dwc_otg_softc *sc;
uint8_t x;
/* get softc */
sc = DWC_OTG_BUS2SC(udev->bus);
/* deactivate all other endpoint but the control endpoint */
if (udev->state == USB_STATE_CONFIGURED ||
udev->state == USB_STATE_ADDRESSED) {
USB_BUS_LOCK(&sc->sc_bus);
for (x = 1; x != sc->sc_dev_ep_max; x++) {
if (x < sc->sc_dev_in_ep_max) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(x),
DWC_OTG_MSK_DIEPCTL_DISABLE);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPCTL(x), 0);
}
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPCTL(x),
DWC_OTG_MSK_DOEPCTL_DISABLE);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPCTL(x), 0);
}
USB_BUS_UNLOCK(&sc->sc_bus);
}
}
int
dwc_otg_init(struct dwc_otg_softc *sc)
{
uint32_t temp;
DPRINTF("start\n");
/* set up the bus structure */
sc->sc_bus.usbrev = USB_REV_2_0;
sc->sc_bus.methods = &dwc_otg_bus_methods;
/* reset active endpoints */
sc->sc_active_out_ep = 1;
USB_BUS_LOCK(&sc->sc_bus);
/* turn on clocks */
dwc_otg_clocks_on(sc);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GSNPSID);
DPRINTF("Version = 0x%08x\n", temp);
/* disconnect */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL,
DWC_OTG_MSK_DCTL_SOFT_DISC);
/* wait for host to detect disconnect */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 32);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GRSTCTL,
DWC_OTG_MSK_GRSTCTL_CSFTRST);
/* wait a little bit for block to reset */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 128);
/* select HSIC or non-HSIC mode */
if (DWC_OTG_USE_HSIC) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GUSBCFG,
DWC_OTG_MSK_GUSBCFG_PHY_INTF |
DWC_OTG_MSK_GUSBCFG_TRD_TIM(5));
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GOTGCTL,
0x000000EC);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GLPMCFG);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GLPMCFG,
temp & ~DWC_OTG_MSK_GLPMCFG_HSIC_CONN);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GLPMCFG,
temp | DWC_OTG_MSK_GLPMCFG_HSIC_CONN);
} else {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GUSBCFG,
DWC_OTG_MSK_GUSBCFG_ULPI_UMTI_SEL |
DWC_OTG_MSK_GUSBCFG_TRD_TIM(5));
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GOTGCTL, 0);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GLPMCFG);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GLPMCFG,
temp & ~DWC_OTG_MSK_GLPMCFG_HSIC_CONN);
}
/* clear global nak */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL,
DWC_OTG_MSK_DCTL_CGOUT_NAK |
DWC_OTG_MSK_DCTL_CGNPIN_NAK);
/* enable USB port */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_PCGCCTL, 0);
/* pull up D+ */
dwc_otg_pull_up(sc);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GHWCFG3);
sc->sc_fifo_size = 4 * DWC_OTG_MSK_GHWCFG3_GET_DFIFO(temp);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GHWCFG2);
sc->sc_dev_ep_max = DWC_OTG_MSK_GHWCFG2_NUM_DEV_EP(temp);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GHWCFG4);
sc->sc_dev_in_ep_max = DWC_OTG_MSK_GHWCFG4_NUM_IN_EPS(temp);
DPRINTF("Total FIFO size = %d bytes, Device EPs = %d/%d\n",
sc->sc_fifo_size, sc->sc_dev_ep_max, sc->sc_dev_in_ep_max);
/* setup FIFO */
if (dwc_otg_init_fifo(sc))
return (EINVAL);
/* enable interrupts */
sc->sc_irq_mask = DWC_OTG_MSK_GINT_ENABLED;
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GINTMSK, sc->sc_irq_mask);
/* enable all endpoint interrupts */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GHWCFG2);
if (temp & DWC_OTG_MSK_GHWCFG2_MPI) {
uint8_t x;
DPRINTF("Multi Process Interrupts\n");
for (x = 0; x != sc->sc_dev_in_ep_max; x++) {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPEACHMSK(x),
DWC_OTG_MSK_DIEP_XFER_COMPLETE);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPEACHMSK(x), 0);
}
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DEACHINTMSK, 0xFFFF);
} else {
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DIEPMSK,
DWC_OTG_MSK_DIEP_XFER_COMPLETE);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DOEPMSK, 0);
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DAINTMSK, 0xFFFF);
}
/* enable global IRQ */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GAHBCFG,
DWC_OTG_MSK_GAHBCFG_GLOBAL_IRQ);
/* turn off clocks */
dwc_otg_clocks_off(sc);
/* read initial VBUS state */
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_GOTGCTL);
DPRINTFN(5, "GOTCTL=0x%08x\n", temp);
dwc_otg_vbus_interrupt(sc,
(temp & DWC_OTG_MSK_GOTGCTL_BSESS_VALID) ? 1 : 0);
USB_BUS_UNLOCK(&sc->sc_bus);
/* catch any lost interrupts */
dwc_otg_do_poll(&sc->sc_bus);
return (0); /* success */
}
void
dwc_otg_uninit(struct dwc_otg_softc *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
/* set disconnect */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_DCTL,
DWC_OTG_MSK_DCTL_SOFT_DISC);
/* turn off global IRQ */
DWC_OTG_WRITE_4(sc, DWC_OTG_REG_GAHBCFG, 0);
sc->sc_flags.port_powered = 0;
sc->sc_flags.status_vbus = 0;
sc->sc_flags.status_bus_reset = 0;
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 0;
sc->sc_flags.change_connect = 1;
dwc_otg_pull_down(sc);
dwc_otg_clocks_off(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
dwc_otg_suspend(struct dwc_otg_softc *sc)
{
return;
}
static void
dwc_otg_resume(struct dwc_otg_softc *sc)
{
return;
}
static void
dwc_otg_do_poll(struct usb_bus *bus)
{
struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
dwc_otg_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*------------------------------------------------------------------------*
* at91dci bulk support
* at91dci control support
* at91dci interrupt support
*------------------------------------------------------------------------*/
static void
dwc_otg_device_non_isoc_open(struct usb_xfer *xfer)
{
return;
}
static void
dwc_otg_device_non_isoc_close(struct usb_xfer *xfer)
{
dwc_otg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
dwc_otg_device_non_isoc_enter(struct usb_xfer *xfer)
{
return;
}
static void
dwc_otg_device_non_isoc_start(struct usb_xfer *xfer)
{
/* setup TDs */
dwc_otg_setup_standard_chain(xfer);
dwc_otg_start_standard_chain(xfer);
}
struct usb_pipe_methods dwc_otg_device_non_isoc_methods =
{
.open = dwc_otg_device_non_isoc_open,
.close = dwc_otg_device_non_isoc_close,
.enter = dwc_otg_device_non_isoc_enter,
.start = dwc_otg_device_non_isoc_start,
};
/*------------------------------------------------------------------------*
* at91dci full speed isochronous support
*------------------------------------------------------------------------*/
static void
dwc_otg_device_isoc_fs_open(struct usb_xfer *xfer)
{
return;
}
static void
dwc_otg_device_isoc_fs_close(struct usb_xfer *xfer)
{
dwc_otg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
dwc_otg_device_isoc_fs_enter(struct usb_xfer *xfer)
{
struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(xfer->xroot->bus);
uint32_t temp;
uint32_t nframes;
DPRINTFN(6, "xfer=%p next=%d nframes=%d\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes);
temp = DWC_OTG_READ_4(sc, DWC_OTG_REG_DSTS);
/* get the current frame index */
nframes = DWC_OTG_MSK_DSTS_GET_FNUM(temp);
if (sc->sc_flags.status_high_speed)
nframes /= 8;
nframes &= DWC_OTG_FRAME_MASK;
/*
* check if the frame index is within the window where the frames
* will be inserted
*/
temp = (nframes - xfer->endpoint->isoc_next) & DWC_OTG_FRAME_MASK;
if ((xfer->endpoint->is_synced == 0) ||
(temp < 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) & DWC_OTG_FRAME_MASK;
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:
*/
temp = (xfer->endpoint->isoc_next - nframes) & DWC_OTG_FRAME_MASK;
/*
* pre-compute when the isochronous transfer will be finished:
*/
xfer->isoc_time_complete =
usb_isoc_time_expand(&sc->sc_bus, nframes) + temp +
xfer->nframes;
/* compute frame number for next insertion */
xfer->endpoint->isoc_next += xfer->nframes;
/* setup TDs */
dwc_otg_setup_standard_chain(xfer);
}
static void
dwc_otg_device_isoc_fs_start(struct usb_xfer *xfer)
{
/* start TD chain */
dwc_otg_start_standard_chain(xfer);
}
struct usb_pipe_methods dwc_otg_device_isoc_fs_methods =
{
.open = dwc_otg_device_isoc_fs_open,
.close = dwc_otg_device_isoc_fs_close,
.enter = dwc_otg_device_isoc_fs_enter,
.start = dwc_otg_device_isoc_fs_start,
};
/*------------------------------------------------------------------------*
* at91dci root control support
*------------------------------------------------------------------------*
* Simulate a hardware HUB by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const struct usb_device_descriptor dwc_otg_devd = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = UDESC_DEVICE,
.bcdUSB = {0x00, 0x02},
.bDeviceClass = UDCLASS_HUB,
.bDeviceSubClass = UDSUBCLASS_HUB,
.bDeviceProtocol = UDPROTO_HSHUBSTT,
.bMaxPacketSize = 64,
.bcdDevice = {0x00, 0x01},
.iManufacturer = 1,
.iProduct = 2,
.bNumConfigurations = 1,
};
static const struct dwc_otg_config_desc dwc_otg_confd = {
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(dwc_otg_confd),
.bNumInterface = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = UC_SELF_POWERED,
.bMaxPower = 0,
},
.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 | DWC_OTG_INTR_ENDPT),
.bmAttributes = UE_INTERRUPT,
.wMaxPacketSize[0] = 8,
.bInterval = 255,
},
};
#define HSETW(ptr, val) ptr = { (uint8_t)(val), (uint8_t)((val) >> 8) }
static const struct usb_hub_descriptor_min dwc_otg_hubd = {
.bDescLength = sizeof(dwc_otg_hubd),
.bDescriptorType = UDESC_HUB,
.bNbrPorts = 1,
HSETW(.wHubCharacteristics, (UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL)),
.bPwrOn2PwrGood = 50,
.bHubContrCurrent = 0,
.DeviceRemovable = {0}, /* port is removable */
};
#define STRING_LANG \
0x09, 0x04, /* American English */
#define STRING_VENDOR \
'D', 0, 'W', 0, 'C', 0, 'O', 0, 'T', 0, 'G', 0
#define STRING_PRODUCT \
'D', 0, 'C', 0, 'I', 0, ' ', 0, 'R', 0, \
'o', 0, 'o', 0, 't', 0, ' ', 0, 'H', 0, \
'U', 0, 'B', 0,
USB_MAKE_STRING_DESC(STRING_LANG, dwc_otg_langtab);
USB_MAKE_STRING_DESC(STRING_VENDOR, dwc_otg_vendor);
USB_MAKE_STRING_DESC(STRING_PRODUCT, dwc_otg_product);
static usb_error_t
dwc_otg_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(udev->bus);
const void *ptr;
uint16_t len;
uint16_t value;
uint16_t index;
usb_error_t err;
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* buffer reset */
ptr = (const void *)&sc->sc_hub_temp;
len = 0;
err = 0;
value = UGETW(req->wValue);
index = UGETW(req->wIndex);
/* demultiplex the control request */
switch (req->bmRequestType) {
case UT_READ_DEVICE:
switch (req->bRequest) {
case UR_GET_DESCRIPTOR:
goto tr_handle_get_descriptor;
case UR_GET_CONFIG:
goto tr_handle_get_config;
case UR_GET_STATUS:
goto tr_handle_get_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_DEVICE:
switch (req->bRequest) {
case UR_SET_ADDRESS:
goto tr_handle_set_address;
case UR_SET_CONFIG:
goto tr_handle_set_config;
case UR_CLEAR_FEATURE:
goto tr_valid; /* nop */
case UR_SET_DESCRIPTOR:
goto tr_valid; /* nop */
case UR_SET_FEATURE:
default:
goto tr_stalled;
}
break;
case UT_WRITE_ENDPOINT:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
switch (UGETW(req->wValue)) {
case UF_ENDPOINT_HALT:
goto tr_handle_clear_halt;
case UF_DEVICE_REMOTE_WAKEUP:
goto tr_handle_clear_wakeup;
default:
goto tr_stalled;
}
break;
case UR_SET_FEATURE:
switch (UGETW(req->wValue)) {
case UF_ENDPOINT_HALT:
goto tr_handle_set_halt;
case UF_DEVICE_REMOTE_WAKEUP:
goto tr_handle_set_wakeup;
default:
goto tr_stalled;
}
break;
case UR_SYNCH_FRAME:
goto tr_valid; /* nop */
default:
goto tr_stalled;
}
break;
case UT_READ_ENDPOINT:
switch (req->bRequest) {
case UR_GET_STATUS:
goto tr_handle_get_ep_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_INTERFACE:
switch (req->bRequest) {
case UR_SET_INTERFACE:
goto tr_handle_set_interface;
case UR_CLEAR_FEATURE:
goto tr_valid; /* nop */
case UR_SET_FEATURE:
default:
goto tr_stalled;
}
break;
case UT_READ_INTERFACE:
switch (req->bRequest) {
case UR_GET_INTERFACE:
goto tr_handle_get_interface;
case UR_GET_STATUS:
goto tr_handle_get_iface_status;
default:
goto tr_stalled;
}
break;
case UT_WRITE_CLASS_INTERFACE:
case UT_WRITE_VENDOR_INTERFACE:
/* XXX forward */
break;
case UT_READ_CLASS_INTERFACE:
case UT_READ_VENDOR_INTERFACE:
/* XXX forward */
break;
case UT_WRITE_CLASS_DEVICE:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
goto tr_valid;
case UR_SET_DESCRIPTOR:
case UR_SET_FEATURE:
break;
default:
goto tr_stalled;
}
break;
case UT_WRITE_CLASS_OTHER:
switch (req->bRequest) {
case UR_CLEAR_FEATURE:
goto tr_handle_clear_port_feature;
case UR_SET_FEATURE:
goto tr_handle_set_port_feature;
case UR_CLEAR_TT_BUFFER:
case UR_RESET_TT:
case UR_STOP_TT:
goto tr_valid;
default:
goto tr_stalled;
}
break;
case UT_READ_CLASS_OTHER:
switch (req->bRequest) {
case UR_GET_TT_STATE:
goto tr_handle_get_tt_state;
case UR_GET_STATUS:
goto tr_handle_get_port_status;
default:
goto tr_stalled;
}
break;
case UT_READ_CLASS_DEVICE:
switch (req->bRequest) {
case UR_GET_DESCRIPTOR:
goto tr_handle_get_class_descriptor;
case UR_GET_STATUS:
goto tr_handle_get_class_status;
default:
goto tr_stalled;
}
break;
default:
goto tr_stalled;
}
goto tr_valid;
tr_handle_get_descriptor:
switch (value >> 8) {
case UDESC_DEVICE:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(dwc_otg_devd);
ptr = (const void *)&dwc_otg_devd;
goto tr_valid;
case UDESC_CONFIG:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(dwc_otg_confd);
ptr = (const void *)&dwc_otg_confd;
goto tr_valid;
case UDESC_STRING:
switch (value & 0xff) {
case 0: /* Language table */
len = sizeof(dwc_otg_langtab);
ptr = (const void *)&dwc_otg_langtab;
goto tr_valid;
case 1: /* Vendor */
len = sizeof(dwc_otg_vendor);
ptr = (const void *)&dwc_otg_vendor;
goto tr_valid;
case 2: /* Product */
len = sizeof(dwc_otg_product);
ptr = (const void *)&dwc_otg_product;
goto tr_valid;
default:
break;
}
break;
default:
goto tr_stalled;
}
goto tr_stalled;
tr_handle_get_config:
len = 1;
sc->sc_hub_temp.wValue[0] = sc->sc_conf;
goto tr_valid;
tr_handle_get_status:
len = 2;
USETW(sc->sc_hub_temp.wValue, UDS_SELF_POWERED);
goto tr_valid;
tr_handle_set_address:
if (value & 0xFF00) {
goto tr_stalled;
}
sc->sc_rt_addr = value;
goto tr_valid;
tr_handle_set_config:
if (value >= 2) {
goto tr_stalled;
}
sc->sc_conf = value;
goto tr_valid;
tr_handle_get_interface:
len = 1;
sc->sc_hub_temp.wValue[0] = 0;
goto tr_valid;
tr_handle_get_tt_state:
tr_handle_get_class_status:
tr_handle_get_iface_status:
tr_handle_get_ep_status:
len = 2;
USETW(sc->sc_hub_temp.wValue, 0);
goto tr_valid;
tr_handle_set_halt:
tr_handle_set_interface:
tr_handle_set_wakeup:
tr_handle_clear_wakeup:
tr_handle_clear_halt:
goto tr_valid;
tr_handle_clear_port_feature:
if (index != 1) {
goto tr_stalled;
}
DPRINTFN(9, "UR_CLEAR_PORT_FEATURE on port %d\n", index);
switch (value) {
case UHF_PORT_SUSPEND:
dwc_otg_wakeup_peer(sc);
break;
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 0;
break;
case UHF_PORT_TEST:
case UHF_PORT_INDICATOR:
case UHF_C_PORT_ENABLE:
case UHF_C_PORT_OVER_CURRENT:
case UHF_C_PORT_RESET:
/* nops */
break;
case UHF_PORT_POWER:
sc->sc_flags.port_powered = 0;
dwc_otg_pull_down(sc);
dwc_otg_clocks_off(sc);
break;
case UHF_C_PORT_CONNECTION:
/* clear connect change flag */
sc->sc_flags.change_connect = 0;
if (!sc->sc_flags.status_bus_reset) {
/* we are not connected */
break;
}
break;
case UHF_C_PORT_SUSPEND:
sc->sc_flags.change_suspend = 0;
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
goto tr_valid;
tr_handle_set_port_feature:
if (index != 1) {
goto tr_stalled;
}
DPRINTFN(9, "UR_SET_PORT_FEATURE\n");
switch (value) {
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 1;
break;
case UHF_PORT_SUSPEND:
case UHF_PORT_RESET:
case UHF_PORT_TEST:
case UHF_PORT_INDICATOR:
/* nops */
break;
case UHF_PORT_POWER:
sc->sc_flags.port_powered = 1;
break;
default:
err = USB_ERR_IOERROR;
goto done;
}
goto tr_valid;
tr_handle_get_port_status:
DPRINTFN(9, "UR_GET_PORT_STATUS\n");
if (index != 1) {
goto tr_stalled;
}
if (sc->sc_flags.status_vbus) {
dwc_otg_clocks_on(sc);
} else {
dwc_otg_clocks_off(sc);
}
/* Select Device Side Mode */
value = UPS_PORT_MODE_DEVICE;
if (sc->sc_flags.status_high_speed) {
value |= UPS_HIGH_SPEED;
}
if (sc->sc_flags.port_powered) {
value |= UPS_PORT_POWER;
}
if (sc->sc_flags.port_enabled) {
value |= UPS_PORT_ENABLED;
}
if (sc->sc_flags.status_vbus &&
sc->sc_flags.status_bus_reset) {
value |= UPS_CURRENT_CONNECT_STATUS;
}
if (sc->sc_flags.status_suspend) {
value |= UPS_SUSPEND;
}
USETW(sc->sc_hub_temp.ps.wPortStatus, value);
value = 0;
if (sc->sc_flags.change_connect) {
value |= UPS_C_CONNECT_STATUS;
}
if (sc->sc_flags.change_suspend) {
value |= UPS_C_SUSPEND;
}
USETW(sc->sc_hub_temp.ps.wPortChange, value);
len = sizeof(sc->sc_hub_temp.ps);
goto tr_valid;
tr_handle_get_class_descriptor:
if (value & 0xFF) {
goto tr_stalled;
}
ptr = (const void *)&dwc_otg_hubd;
len = sizeof(dwc_otg_hubd);
goto tr_valid;
tr_stalled:
err = USB_ERR_STALLED;
tr_valid:
done:
*plength = len;
*pptr = ptr;
return (err);
}
static void
dwc_otg_xfer_setup(struct usb_setup_params *parm)
{
const struct usb_hw_ep_profile *pf;
struct usb_xfer *xfer;
void *last_obj;
uint32_t ntd;
uint32_t n;
uint8_t ep_no;
xfer = parm->curr_xfer;
/*
* NOTE: This driver does not use any of the parameters that
* are computed from the following values. Just set some
* reasonable dummies:
*/
parm->hc_max_packet_size = 0x500;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = 0x500;
usbd_transfer_setup_sub(parm);
/*
* compute maximum number of TDs
*/
if ((xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE) == UE_CONTROL) {
ntd = xfer->nframes + 1 /* STATUS */ + 1 /* SYNC 1 */
+ 1 /* SYNC 2 */ ;
} else {
ntd = xfer->nframes + 1 /* SYNC */ ;
}
/*
* check if "usbd_transfer_setup_sub" set an error
*/
if (parm->err)
return;
/*
* allocate transfer descriptors
*/
last_obj = NULL;
/*
* get profile stuff
*/
ep_no = xfer->endpointno & UE_ADDR;
dwc_otg_get_hw_ep_profile(parm->udev, &pf, ep_no);
if (pf == NULL) {
/* should not happen */
parm->err = USB_ERR_INVAL;
return;
}
/* align data */
parm->size[0] += ((-parm->size[0]) & (USB_HOST_ALIGN - 1));
for (n = 0; n != ntd; n++) {
struct dwc_otg_td *td;
if (parm->buf) {
td = USB_ADD_BYTES(parm->buf, parm->size[0]);
/* init TD */
td->max_packet_size = xfer->max_packet_size;
td->ep_no = ep_no;
td->obj_next = last_obj;
last_obj = td;
}
parm->size[0] += sizeof(*td);
}
xfer->td_start[0] = last_obj;
}
static void
dwc_otg_xfer_unsetup(struct usb_xfer *xfer)
{
return;
}
static void
dwc_otg_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(udev->bus);
DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d (%d,%d)\n",
ep, udev->address,
edesc->bEndpointAddress, udev->flags.usb_mode,
sc->sc_rt_addr, udev->device_index);
if (udev->device_index != sc->sc_rt_addr) {
if (udev->flags.usb_mode != USB_MODE_DEVICE) {
/* not supported */
return;
}
if (udev->speed != USB_SPEED_FULL &&
udev->speed != USB_SPEED_HIGH) {
/* not supported */
return;
}
if ((edesc->bmAttributes & UE_XFERTYPE) == UE_ISOCHRONOUS)
ep->methods = &dwc_otg_device_isoc_fs_methods;
else
ep->methods = &dwc_otg_device_non_isoc_methods;
}
}
static void
dwc_otg_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct dwc_otg_softc *sc = DWC_OTG_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
dwc_otg_suspend(sc);
break;
case USB_HW_POWER_SHUTDOWN:
dwc_otg_uninit(sc);
break;
case USB_HW_POWER_RESUME:
dwc_otg_resume(sc);
break;
default:
break;
}
}
struct usb_bus_methods dwc_otg_bus_methods =
{
.endpoint_init = &dwc_otg_ep_init,
.xfer_setup = &dwc_otg_xfer_setup,
.xfer_unsetup = &dwc_otg_xfer_unsetup,
.get_hw_ep_profile = &dwc_otg_get_hw_ep_profile,
.set_stall = &dwc_otg_set_stall,
.clear_stall = &dwc_otg_clear_stall,
.roothub_exec = &dwc_otg_roothub_exec,
.xfer_poll = &dwc_otg_do_poll,
.device_state_change = &dwc_otg_device_state_change,
.set_hw_power_sleep = &dwc_otg_set_hw_power_sleep,
};
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