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freebsd-dev/sys/dev/usb/controller/musb_otg.c
Oleksandr Tymoshenko e2bb79f70f Remove misleading comment. musb supports host mode for more than two years now 
Spotted by: jmcneill
2016-04-05 18:07:13 +00:00

4256 lines
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/* $FreeBSD$ */
/*-
* Copyright (c) 2008 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.
*/
/*
* Thanks to Mentor Graphics for providing a reference driver for this USB chip
* at their homepage.
*/
/*
* This file contains the driver for the Mentor Graphics Inventra USB
* 2.0 High Speed Dual-Role controller.
*
*/
#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 musbotgdebug
#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/musb_otg.h>
#define MUSBOTG_INTR_ENDPT 1
#define MUSBOTG_BUS2SC(bus) \
((struct musbotg_softc *)(((uint8_t *)(bus)) - \
USB_P2U(&(((struct musbotg_softc *)0)->sc_bus))))
#define MUSBOTG_PC2SC(pc) \
MUSBOTG_BUS2SC(USB_DMATAG_TO_XROOT((pc)->tag_parent)->bus)
#ifdef USB_DEBUG
static int musbotgdebug = 0;
static SYSCTL_NODE(_hw_usb, OID_AUTO, musbotg, CTLFLAG_RW, 0, "USB musbotg");
SYSCTL_INT(_hw_usb_musbotg, OID_AUTO, debug, CTLFLAG_RWTUN,
&musbotgdebug, 0, "Debug level");
#endif
#define MAX_NAK_TO 16
/* prototypes */
static const struct usb_bus_methods musbotg_bus_methods;
static const struct usb_pipe_methods musbotg_device_bulk_methods;
static const struct usb_pipe_methods musbotg_device_ctrl_methods;
static const struct usb_pipe_methods musbotg_device_intr_methods;
static const struct usb_pipe_methods musbotg_device_isoc_methods;
/* Control transfers: Device mode */
static musbotg_cmd_t musbotg_dev_ctrl_setup_rx;
static musbotg_cmd_t musbotg_dev_ctrl_data_rx;
static musbotg_cmd_t musbotg_dev_ctrl_data_tx;
static musbotg_cmd_t musbotg_dev_ctrl_status;
/* Control transfers: Host mode */
static musbotg_cmd_t musbotg_host_ctrl_setup_tx;
static musbotg_cmd_t musbotg_host_ctrl_data_rx;
static musbotg_cmd_t musbotg_host_ctrl_data_tx;
static musbotg_cmd_t musbotg_host_ctrl_status_rx;
static musbotg_cmd_t musbotg_host_ctrl_status_tx;
/* Bulk, Interrupt, Isochronous: Device mode */
static musbotg_cmd_t musbotg_dev_data_rx;
static musbotg_cmd_t musbotg_dev_data_tx;
/* Bulk, Interrupt, Isochronous: Host mode */
static musbotg_cmd_t musbotg_host_data_rx;
static musbotg_cmd_t musbotg_host_data_tx;
static void musbotg_device_done(struct usb_xfer *, usb_error_t);
static void musbotg_do_poll(struct usb_bus *);
static void musbotg_standard_done(struct usb_xfer *);
static void musbotg_interrupt_poll(struct musbotg_softc *);
static void musbotg_root_intr(struct musbotg_softc *);
static int musbotg_channel_alloc(struct musbotg_softc *, struct musbotg_td *td, uint8_t);
static void musbotg_channel_free(struct musbotg_softc *, struct musbotg_td *td);
static void musbotg_ep_int_set(struct musbotg_softc *sc, int channel, int on);
/*
* Here is a configuration that the chip supports.
*/
static const struct usb_hw_ep_profile musbotg_ep_profile[1] = {
[0] = {
.max_in_frame_size = 64,/* fixed */
.max_out_frame_size = 64, /* fixed */
.is_simplex = 1,
.support_control = 1,
}
};
static int
musbotg_channel_alloc(struct musbotg_softc *sc, struct musbotg_td *td, uint8_t is_tx)
{
int ch;
int ep;
ep = td->ep_no;
/* In device mode each EP got its own channel */
if (sc->sc_mode == MUSB2_DEVICE_MODE) {
musbotg_ep_int_set(sc, ep, 1);
return (ep);
}
/*
* All control transactions go through EP0
*/
if (ep == 0) {
if (sc->sc_channel_mask & (1 << 0))
return (-1);
sc->sc_channel_mask |= (1 << 0);
musbotg_ep_int_set(sc, ep, 1);
return (0);
}
for (ch = sc->sc_ep_max; ch != 0; ch--) {
if (sc->sc_channel_mask & (1 << ch))
continue;
/* check FIFO size requirement */
if (is_tx) {
if (td->max_frame_size >
sc->sc_hw_ep_profile[ch].max_in_frame_size)
continue;
} else {
if (td->max_frame_size >
sc->sc_hw_ep_profile[ch].max_out_frame_size)
continue;
}
sc->sc_channel_mask |= (1 << ch);
musbotg_ep_int_set(sc, ch, 1);
return (ch);
}
DPRINTFN(-1, "No available channels. Mask: %04x\n", sc->sc_channel_mask);
return (-1);
}
static void
musbotg_channel_free(struct musbotg_softc *sc, struct musbotg_td *td)
{
DPRINTFN(1, "ep_no=%d\n", td->channel);
if (sc->sc_mode == MUSB2_DEVICE_MODE)
return;
if (td == NULL)
return;
if (td->channel == -1)
return;
musbotg_ep_int_set(sc, td->channel, 0);
sc->sc_channel_mask &= ~(1 << td->channel);
td->channel = -1;
}
static void
musbotg_get_hw_ep_profile(struct usb_device *udev,
const struct usb_hw_ep_profile **ppf, uint8_t ep_addr)
{
struct musbotg_softc *sc;
sc = MUSBOTG_BUS2SC(udev->bus);
if (ep_addr == 0) {
/* control endpoint */
*ppf = musbotg_ep_profile;
} else if (ep_addr <= sc->sc_ep_max) {
/* other endpoints */
*ppf = sc->sc_hw_ep_profile + ep_addr;
} else {
*ppf = NULL;
}
}
static void
musbotg_clocks_on(struct musbotg_softc *sc)
{
if (sc->sc_flags.clocks_off &&
sc->sc_flags.port_powered) {
DPRINTFN(4, "\n");
if (sc->sc_clocks_on) {
(sc->sc_clocks_on) (sc->sc_clocks_arg);
}
sc->sc_flags.clocks_off = 0;
/* XXX enable Transceiver */
}
}
static void
musbotg_clocks_off(struct musbotg_softc *sc)
{
if (!sc->sc_flags.clocks_off) {
DPRINTFN(4, "\n");
/* XXX disable Transceiver */
if (sc->sc_clocks_off) {
(sc->sc_clocks_off) (sc->sc_clocks_arg);
}
sc->sc_flags.clocks_off = 1;
}
}
static void
musbotg_pull_common(struct musbotg_softc *sc, uint8_t on)
{
uint8_t temp;
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
if (on)
temp |= MUSB2_MASK_SOFTC;
else
temp &= ~MUSB2_MASK_SOFTC;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
}
static void
musbotg_pull_up(struct musbotg_softc *sc)
{
/* pullup D+, if possible */
if (!sc->sc_flags.d_pulled_up &&
sc->sc_flags.port_powered) {
sc->sc_flags.d_pulled_up = 1;
musbotg_pull_common(sc, 1);
}
}
static void
musbotg_pull_down(struct musbotg_softc *sc)
{
/* pulldown D+, if possible */
if (sc->sc_flags.d_pulled_up) {
sc->sc_flags.d_pulled_up = 0;
musbotg_pull_common(sc, 0);
}
}
static void
musbotg_suspend_host(struct musbotg_softc *sc)
{
uint8_t temp;
if (sc->sc_flags.status_suspend) {
return;
}
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
temp |= MUSB2_MASK_SUSPMODE;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
sc->sc_flags.status_suspend = 1;
}
static void
musbotg_wakeup_host(struct musbotg_softc *sc)
{
uint8_t temp;
if (!(sc->sc_flags.status_suspend)) {
return;
}
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
temp &= ~MUSB2_MASK_SUSPMODE;
temp |= MUSB2_MASK_RESUME;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
/* wait 20 milliseconds */
/* Wait for reset to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 50);
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
temp &= ~MUSB2_MASK_RESUME;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
sc->sc_flags.status_suspend = 0;
}
static void
musbotg_wakeup_peer(struct musbotg_softc *sc)
{
uint8_t temp;
if (!(sc->sc_flags.status_suspend)) {
return;
}
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
temp |= MUSB2_MASK_RESUME;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
/* wait 8 milliseconds */
/* Wait for reset to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 125);
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
temp &= ~MUSB2_MASK_RESUME;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, temp);
}
static void
musbotg_set_address(struct musbotg_softc *sc, uint8_t addr)
{
DPRINTFN(4, "addr=%d\n", addr);
addr &= 0x7F;
MUSB2_WRITE_1(sc, MUSB2_REG_FADDR, addr);
}
static uint8_t
musbotg_dev_ctrl_setup_rx(struct musbotg_td *td)
{
struct musbotg_softc *sc;
struct usb_device_request req;
uint16_t count;
uint8_t csr;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 0);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
/*
* NOTE: If DATAEND is set we should not call the
* callback, hence the status stage is not complete.
*/
if (csr & MUSB2_MASK_CSR0L_DATAEND) {
/* do not stall at this point */
td->did_stall = 1;
/* wait for interrupt */
DPRINTFN(1, "CSR0 DATAEND\n");
goto not_complete;
}
if (csr & MUSB2_MASK_CSR0L_SENTSTALL) {
/* clear SENTSTALL */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
/* get latest status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
/* update EP0 state */
sc->sc_ep0_busy = 0;
}
if (csr & MUSB2_MASK_CSR0L_SETUPEND) {
/* clear SETUPEND */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_SETUPEND_CLR);
/* get latest status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
/* update EP0 state */
sc->sc_ep0_busy = 0;
}
if (sc->sc_ep0_busy) {
DPRINTFN(1, "EP0 BUSY\n");
goto not_complete;
}
if (!(csr & MUSB2_MASK_CSR0L_RXPKTRDY)) {
goto not_complete;
}
/* get the packet byte count */
count = MUSB2_READ_2(sc, MUSB2_REG_RXCOUNT);
/* verify data length */
if (count != td->remainder) {
DPRINTFN(1, "Invalid SETUP packet "
"length, %d bytes\n", count);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_RXPKTRDY_CLR);
/* don't clear stall */
td->did_stall = 1;
goto not_complete;
}
if (count != sizeof(req)) {
DPRINTFN(1, "Unsupported SETUP packet "
"length, %d bytes\n", count);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_RXPKTRDY_CLR);
/* don't clear stall */
td->did_stall = 1;
goto not_complete;
}
/* clear did stall flag */
td->did_stall = 0;
/* receive data */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), (void *)&req, sizeof(req));
/* copy data into real buffer */
usbd_copy_in(td->pc, 0, &req, sizeof(req));
td->offset = sizeof(req);
td->remainder = 0;
/* set pending command */
sc->sc_ep0_cmd = MUSB2_MASK_CSR0L_RXPKTRDY_CLR;
/* we need set stall or dataend after this */
sc->sc_ep0_busy = 1;
/* sneak peek the set address */
if ((req.bmRequestType == UT_WRITE_DEVICE) &&
(req.bRequest == UR_SET_ADDRESS)) {
sc->sc_dv_addr = req.wValue[0] & 0x7F;
} else {
sc->sc_dv_addr = 0xFF;
}
musbotg_channel_free(sc, td);
return (0); /* complete */
not_complete:
/* abort any ongoing transfer */
if (!td->did_stall) {
DPRINTFN(4, "stalling\n");
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_SENDSTALL);
td->did_stall = 1;
}
return (1); /* not complete */
}
static uint8_t
musbotg_host_ctrl_setup_tx(struct musbotg_td *td)
{
struct musbotg_softc *sc;
struct usb_device_request req;
uint8_t csr, csrh;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 1);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
/* Not ready yet yet */
if (csr & MUSB2_MASK_CSR0L_TXPKTRDY)
return (1);
/* Failed */
if (csr & (MUSB2_MASK_CSR0L_RXSTALL |
MUSB2_MASK_CSR0L_ERROR))
{
/* Clear status bit */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
DPRINTFN(1, "error bit set, csr=0x%02x\n", csr);
td->error = 1;
}
if (csr & MUSB2_MASK_CSR0L_NAKTIMO) {
DPRINTFN(1, "NAK timeout\n");
if (csr & MUSB2_MASK_CSR0L_TXFIFONEMPTY) {
csrh = MUSB2_READ_1(sc, MUSB2_REG_TXCSRH);
csrh |= MUSB2_MASK_CSR0H_FFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH, csrh);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
if (csr & MUSB2_MASK_CSR0L_TXFIFONEMPTY) {
csrh = MUSB2_READ_1(sc, MUSB2_REG_TXCSRH);
csrh |= MUSB2_MASK_CSR0H_FFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH, csrh);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
}
}
csr &= ~MUSB2_MASK_CSR0L_NAKTIMO;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
td->error = 1;
}
if (td->error) {
musbotg_channel_free(sc, td);
return (0);
}
/* Fifo is not empty and there is no NAK timeout */
if (csr & MUSB2_MASK_CSR0L_TXPKTRDY)
return (1);
/* check if we are complete */
if (td->remainder == 0) {
/* we are complete */
musbotg_channel_free(sc, td);
return (0);
}
/* copy data into real buffer */
usbd_copy_out(td->pc, 0, &req, sizeof(req));
/* send data */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), (void *)&req, sizeof(req));
/* update offset and remainder */
td->offset += sizeof(req);
td->remainder -= sizeof(req);
MUSB2_WRITE_1(sc, MUSB2_REG_TXNAKLIMIT, MAX_NAK_TO);
MUSB2_WRITE_1(sc, MUSB2_REG_TXFADDR(0), td->dev_addr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHADDR(0), td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHUBPORT(0), td->hport);
MUSB2_WRITE_1(sc, MUSB2_REG_TXTI, td->transfer_type);
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_TXPKTRDY |
MUSB2_MASK_CSR0L_SETUPPKT);
/* Just to be consistent, not used above */
td->transaction_started = 1;
return (1); /* in progress */
}
/* Control endpoint only data handling functions (RX/TX/SYNC) */
static uint8_t
musbotg_dev_ctrl_data_rx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr;
uint8_t got_short;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* check if a command is pending */
if (sc->sc_ep0_cmd) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, sc->sc_ep0_cmd);
sc->sc_ep0_cmd = 0;
}
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
got_short = 0;
if (csr & (MUSB2_MASK_CSR0L_SETUPEND |
MUSB2_MASK_CSR0L_SENTSTALL)) {
if (td->remainder == 0) {
/*
* We are actually complete and have
* received the next SETUP
*/
DPRINTFN(4, "faking complete\n");
return (0); /* complete */
}
/*
* USB Host Aborted the transfer.
*/
td->error = 1;
return (0); /* complete */
}
if (!(csr & MUSB2_MASK_CSR0L_RXPKTRDY)) {
return (1); /* not complete */
}
/* get the packet byte count */
count = MUSB2_READ_2(sc, MUSB2_REG_RXCOUNT);
/* verify the packet byte count */
if (count != td->max_frame_size) {
if (count < td->max_frame_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
return (0); /* we are complete */
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
temp = count & ~3;
if (temp) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), sc->sc_bounce_buf,
temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0),
(void *)(&sc->sc_bounce_buf[count / 4]), temp);
}
usbd_copy_in(td->pc, td->offset,
sc->sc_bounce_buf, count);
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* receive data */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
sc->sc_ep0_cmd = MUSB2_MASK_CSR0L_RXPKTRDY_CLR;
return (0);
}
/* else need to receive a zero length packet */
}
/* write command - need more data */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_RXPKTRDY_CLR);
return (1); /* not complete */
}
static uint8_t
musbotg_dev_ctrl_data_tx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* check if a command is pending */
if (sc->sc_ep0_cmd) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, sc->sc_ep0_cmd);
sc->sc_ep0_cmd = 0;
}
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (csr & (MUSB2_MASK_CSR0L_SETUPEND |
MUSB2_MASK_CSR0L_SENTSTALL)) {
/*
* The current transfer was aborted
* by the USB Host
*/
td->error = 1;
return (0); /* complete */
}
if (csr & MUSB2_MASK_CSR0L_TXPKTRDY) {
return (1); /* not complete */
}
count = td->max_frame_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
usbd_copy_out(td->pc, td->offset,
sc->sc_bounce_buf, count);
temp = count & ~3;
if (temp) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), sc->sc_bounce_buf,
temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* transmit data */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
sc->sc_ep0_cmd = MUSB2_MASK_CSR0L_TXPKTRDY;
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_TXPKTRDY);
return (1); /* not complete */
}
static uint8_t
musbotg_host_ctrl_data_rx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr;
uint8_t got_short;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 0);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
got_short = 0;
if (!td->transaction_started) {
td->transaction_started = 1;
MUSB2_WRITE_1(sc, MUSB2_REG_RXNAKLIMIT, MAX_NAK_TO);
MUSB2_WRITE_1(sc, MUSB2_REG_RXFADDR(0),
td->dev_addr);
MUSB2_WRITE_1(sc, MUSB2_REG_RXHADDR(0), td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_RXHUBPORT(0), td->hport);
MUSB2_WRITE_1(sc, MUSB2_REG_RXTI, td->transfer_type);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_REQPKT);
return (1);
}
if (csr & MUSB2_MASK_CSR0L_NAKTIMO) {
csr &= ~MUSB2_MASK_CSR0L_REQPKT;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
csr &= ~MUSB2_MASK_CSR0L_NAKTIMO;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
td->error = 1;
}
/* Failed */
if (csr & (MUSB2_MASK_CSR0L_RXSTALL |
MUSB2_MASK_CSR0L_ERROR))
{
/* Clear status bit */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
DPRINTFN(1, "error bit set, csr=0x%02x\n", csr);
td->error = 1;
}
if (td->error) {
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
if (!(csr & MUSB2_MASK_CSR0L_RXPKTRDY))
return (1); /* not yet */
/* get the packet byte count */
count = MUSB2_READ_2(sc, MUSB2_REG_RXCOUNT);
/* verify the packet byte count */
if (count != td->max_frame_size) {
if (count < td->max_frame_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
temp = count & ~3;
if (temp) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), sc->sc_bounce_buf,
temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0),
(void *)(&sc->sc_bounce_buf[count / 4]), temp);
}
usbd_copy_in(td->pc, td->offset,
sc->sc_bounce_buf, count);
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* receive data */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
csr &= ~MUSB2_MASK_CSR0L_RXPKTRDY;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
musbotg_channel_free(sc, td);
return (0);
}
/* else need to receive a zero length packet */
}
td->transaction_started = 1;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_REQPKT);
return (1); /* not complete */
}
static uint8_t
musbotg_host_ctrl_data_tx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr, csrh;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 1);
/* No free EPs */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (csr & (MUSB2_MASK_CSR0L_RXSTALL |
MUSB2_MASK_CSR0L_ERROR)) {
/* clear status bits */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
td->error = 1;
}
if (csr & MUSB2_MASK_CSR0L_NAKTIMO ) {
if (csr & MUSB2_MASK_CSR0L_TXFIFONEMPTY) {
csrh = MUSB2_READ_1(sc, MUSB2_REG_TXCSRH);
csrh |= MUSB2_MASK_CSR0H_FFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH, csrh);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
if (csr & MUSB2_MASK_CSR0L_TXFIFONEMPTY) {
csrh = MUSB2_READ_1(sc, MUSB2_REG_TXCSRH);
csrh |= MUSB2_MASK_CSR0H_FFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH, csrh);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
}
}
csr &= ~MUSB2_MASK_CSR0L_NAKTIMO;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
td->error = 1;
}
if (td->error) {
musbotg_channel_free(sc, td);
return (0); /* complete */
}
/*
* Wait while FIFO is empty.
* Do not flush it because it will cause transactions
* with size more then packet size. It might upset
* some devices
*/
if (csr & MUSB2_MASK_CSR0L_TXFIFONEMPTY)
return (1);
/* Packet still being processed */
if (csr & MUSB2_MASK_CSR0L_TXPKTRDY)
return (1);
if (td->transaction_started) {
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
musbotg_channel_free(sc, td);
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
/* We're not complete - more transactions required */
td->transaction_started = 0;
}
/* check for short packet */
count = td->max_frame_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
usbd_copy_out(td->pc, td->offset,
sc->sc_bounce_buf, count);
temp = count & ~3;
if (temp) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag,
sc->sc_io_hdl, MUSB2_REG_EPFIFO(0),
sc->sc_bounce_buf, temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* transmit data */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(0), buf_res.buffer,
buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* Function address */
MUSB2_WRITE_1(sc, MUSB2_REG_TXFADDR(0), td->dev_addr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHADDR(0), td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHUBPORT(0), td->hport);
MUSB2_WRITE_1(sc, MUSB2_REG_TXTI, td->transfer_type);
/* TX NAK timeout */
MUSB2_WRITE_1(sc, MUSB2_REG_TXNAKLIMIT, MAX_NAK_TO);
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_TXPKTRDY);
td->transaction_started = 1;
return (1); /* not complete */
}
static uint8_t
musbotg_dev_ctrl_status(struct musbotg_td *td)
{
struct musbotg_softc *sc;
uint8_t csr;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
if (sc->sc_ep0_busy) {
sc->sc_ep0_busy = 0;
sc->sc_ep0_cmd |= MUSB2_MASK_CSR0L_DATAEND;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, sc->sc_ep0_cmd);
sc->sc_ep0_cmd = 0;
}
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (csr & MUSB2_MASK_CSR0L_DATAEND) {
/* wait for interrupt */
return (1); /* not complete */
}
if (sc->sc_dv_addr != 0xFF) {
/* write function address */
musbotg_set_address(sc, sc->sc_dv_addr);
}
musbotg_channel_free(sc, td);
return (0); /* complete */
}
static uint8_t
musbotg_host_ctrl_status_rx(struct musbotg_td *td)
{
struct musbotg_softc *sc;
uint8_t csr, csrh;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 0);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
if (!td->transaction_started) {
MUSB2_WRITE_1(sc, MUSB2_REG_RXFADDR(0),
td->dev_addr);
MUSB2_WRITE_1(sc, MUSB2_REG_RXHADDR(0), td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_RXHUBPORT(0), td->hport);
MUSB2_WRITE_1(sc, MUSB2_REG_RXTI, td->transfer_type);
/* RX NAK timeout */
MUSB2_WRITE_1(sc, MUSB2_REG_RXNAKLIMIT, MAX_NAK_TO);
td->transaction_started = 1;
/* Disable PING */
csrh = MUSB2_READ_1(sc, MUSB2_REG_RXCSRH);
csrh |= MUSB2_MASK_CSR0H_PING_DIS;
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH, csrh);
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_STATUSPKT |
MUSB2_MASK_CSR0L_REQPKT);
return (1); /* Just started */
}
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "IN STATUS csr=0x%02x\n", csr);
if (csr & MUSB2_MASK_CSR0L_RXPKTRDY) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_RXPKTRDY_CLR);
musbotg_channel_free(sc, td);
return (0); /* complete */
}
if (csr & MUSB2_MASK_CSR0L_NAKTIMO) {
csr &= ~ (MUSB2_MASK_CSR0L_STATUSPKT |
MUSB2_MASK_CSR0L_REQPKT);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
csr &= ~MUSB2_MASK_CSR0L_NAKTIMO;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
td->error = 1;
}
/* Failed */
if (csr & (MUSB2_MASK_CSR0L_RXSTALL |
MUSB2_MASK_CSR0L_ERROR))
{
/* Clear status bit */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
DPRINTFN(1, "error bit set, csr=0x%02x\n", csr);
td->error = 1;
}
if (td->error) {
musbotg_channel_free(sc, td);
return (0);
}
return (1); /* Not ready yet */
}
static uint8_t
musbotg_host_ctrl_status_tx(struct musbotg_td *td)
{
struct musbotg_softc *sc;
uint8_t csr;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 1);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d/%d [%d@%d.%d/%02x]\n", td->channel, td->transaction_started,
td->dev_addr,td->haddr,td->hport, td->transfer_type);
/* select endpoint 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
/* Not yet */
if (csr & MUSB2_MASK_CSR0L_TXPKTRDY)
return (1);
/* Failed */
if (csr & (MUSB2_MASK_CSR0L_RXSTALL |
MUSB2_MASK_CSR0L_ERROR))
{
/* Clear status bit */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
DPRINTFN(1, "error bit set, csr=0x%02x\n", csr);
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* complete */
}
if (td->transaction_started) {
musbotg_channel_free(sc, td);
return (0); /* complete */
}
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH, MUSB2_MASK_CSR0H_PING_DIS);
MUSB2_WRITE_1(sc, MUSB2_REG_TXFADDR(0), td->dev_addr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHADDR(0), td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHUBPORT(0), td->hport);
MUSB2_WRITE_1(sc, MUSB2_REG_TXTI, td->transfer_type);
/* TX NAK timeout */
MUSB2_WRITE_1(sc, MUSB2_REG_TXNAKLIMIT, MAX_NAK_TO);
td->transaction_started = 1;
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSR0L_STATUSPKT |
MUSB2_MASK_CSR0L_TXPKTRDY);
return (1); /* wait for interrupt */
}
static uint8_t
musbotg_dev_data_rx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr;
uint8_t to;
uint8_t got_short;
to = 8; /* don't loop forever! */
got_short = 0;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 0);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, td->channel);
repeat:
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
/* clear overrun */
if (csr & MUSB2_MASK_CSRL_RXOVERRUN) {
/* make sure we don't clear "RXPKTRDY" */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXPKTRDY);
}
/* check status */
if (!(csr & MUSB2_MASK_CSRL_RXPKTRDY))
return (1); /* not complete */
/* get the packet byte count */
count = MUSB2_READ_2(sc, MUSB2_REG_RXCOUNT);
DPRINTFN(4, "count=0x%04x\n", count);
/*
* Check for short or invalid packet:
*/
if (count != td->max_frame_size) {
if (count < td->max_frame_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
temp = count & ~3;
if (temp) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), sc->sc_bounce_buf,
temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_read_multi_1(sc->sc_io_tag,
sc->sc_io_hdl, MUSB2_REG_EPFIFO(td->channel),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
usbd_copy_in(td->pc, td->offset,
sc->sc_bounce_buf, count);
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* receive data */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* clear status bits */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, 0);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
musbotg_channel_free(sc, td);
return (0);
}
/* else need to receive a zero length packet */
}
if (--to) {
goto repeat;
}
return (1); /* not complete */
}
static uint8_t
musbotg_dev_data_tx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr;
uint8_t to;
to = 8; /* don't loop forever! */
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 1);
/* EP0 is busy, wait */
if (td->channel == -1)
return (1);
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, td->channel);
repeat:
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (csr & (MUSB2_MASK_CSRL_TXINCOMP |
MUSB2_MASK_CSRL_TXUNDERRUN)) {
/* clear status bits */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
}
if (csr & MUSB2_MASK_CSRL_TXPKTRDY) {
return (1); /* not complete */
}
/* check for short packet */
count = td->max_frame_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
usbd_copy_out(td->pc, td->offset,
sc->sc_bounce_buf, count);
temp = count & ~3;
if (temp) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag,
sc->sc_io_hdl, MUSB2_REG_EPFIFO(td->channel),
sc->sc_bounce_buf, temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* transmit data */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* Max packet size */
MUSB2_WRITE_2(sc, MUSB2_REG_TXMAXP, td->reg_max_packet);
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXPKTRDY);
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
musbotg_channel_free(sc, td);
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
if (--to) {
goto repeat;
}
return (1); /* not complete */
}
static uint8_t
musbotg_host_data_rx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr, csrh;
uint8_t to;
uint8_t got_short;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 0);
/* No free EPs */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
to = 8; /* don't loop forever! */
got_short = 0;
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, td->channel);
repeat:
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (!td->transaction_started) {
/* Function address */
MUSB2_WRITE_1(sc, MUSB2_REG_RXFADDR(td->channel),
td->dev_addr);
/* SPLIT transaction */
MUSB2_WRITE_1(sc, MUSB2_REG_RXHADDR(td->channel),
td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_RXHUBPORT(td->channel),
td->hport);
/* RX NAK timeout */
if (td->transfer_type & MUSB2_MASK_TI_PROTO_ISOC)
MUSB2_WRITE_1(sc, MUSB2_REG_RXNAKLIMIT, 0);
else
MUSB2_WRITE_1(sc, MUSB2_REG_RXNAKLIMIT, MAX_NAK_TO);
/* Protocol, speed, device endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_RXTI, td->transfer_type);
/* Max packet size */
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, td->reg_max_packet);
/* Data Toggle */
csrh = MUSB2_READ_1(sc, MUSB2_REG_RXCSRH);
DPRINTFN(4, "csrh=0x%02x\n", csrh);
csrh |= MUSB2_MASK_CSRH_RXDT_WREN;
if (td->toggle)
csrh |= MUSB2_MASK_CSRH_RXDT_VAL;
else
csrh &= ~MUSB2_MASK_CSRH_RXDT_VAL;
/* Set data toggle */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH, csrh);
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXREQPKT);
td->transaction_started = 1;
return (1);
}
/* clear NAK timeout */
if (csr & MUSB2_MASK_CSRL_RXNAKTO) {
DPRINTFN(4, "NAK Timeout\n");
if (csr & MUSB2_MASK_CSRL_RXREQPKT) {
csr &= ~MUSB2_MASK_CSRL_RXREQPKT;
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, csr);
csr &= ~MUSB2_MASK_CSRL_RXNAKTO;
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, csr);
}
td->error = 1;
}
if (csr & MUSB2_MASK_CSRL_RXERROR) {
DPRINTFN(4, "RXERROR\n");
td->error = 1;
}
if (csr & MUSB2_MASK_CSRL_RXSTALL) {
DPRINTFN(4, "RXSTALL\n");
td->error = 1;
}
if (td->error) {
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
if (!(csr & MUSB2_MASK_CSRL_RXPKTRDY)) {
/* No data available yet */
return (1);
}
td->toggle ^= 1;
/* get the packet byte count */
count = MUSB2_READ_2(sc, MUSB2_REG_RXCOUNT);
DPRINTFN(4, "count=0x%04x\n", count);
/*
* Check for short or invalid packet:
*/
if (count != td->max_frame_size) {
if (count < td->max_frame_size) {
/* we have a short packet */
td->short_pkt = 1;
got_short = 1;
} else {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* we are complete */
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
temp = count & ~3;
if (temp) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), sc->sc_bounce_buf,
temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_read_multi_1(sc->sc_io_tag,
sc->sc_io_hdl, MUSB2_REG_EPFIFO(td->channel),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
usbd_copy_in(td->pc, td->offset,
sc->sc_bounce_buf, count);
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* receive data 4 bytes at a time */
bus_space_read_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* receive data */
bus_space_read_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* clear status bits */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, 0);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt) {
/* we are complete */
musbotg_channel_free(sc, td);
return (0);
}
/* else need to receive a zero length packet */
}
/* Reset transaction state and restart */
td->transaction_started = 0;
if (--to)
goto repeat;
return (1); /* not complete */
}
static uint8_t
musbotg_host_data_tx(struct musbotg_td *td)
{
struct usb_page_search buf_res;
struct musbotg_softc *sc;
uint16_t count;
uint8_t csr, csrh;
/* get pointer to softc */
sc = MUSBOTG_PC2SC(td->pc);
if (td->channel == -1)
td->channel = musbotg_channel_alloc(sc, td, 1);
/* No free EPs */
if (td->channel == -1)
return (1);
DPRINTFN(1, "ep_no=%d\n", td->channel);
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, td->channel);
/* read out FIFO status */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
DPRINTFN(4, "csr=0x%02x\n", csr);
if (csr & (MUSB2_MASK_CSRL_TXSTALLED |
MUSB2_MASK_CSRL_TXERROR)) {
/* clear status bits */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* complete */
}
if (csr & MUSB2_MASK_CSRL_TXNAKTO) {
/*
* Flush TX FIFO before clearing NAK TO
*/
if (csr & MUSB2_MASK_CSRL_TXFIFONEMPTY) {
csr |= MUSB2_MASK_CSRL_TXFFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
if (csr & MUSB2_MASK_CSRL_TXFIFONEMPTY) {
csr |= MUSB2_MASK_CSRL_TXFFLUSH;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
}
}
csr &= ~MUSB2_MASK_CSRL_TXNAKTO;
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, csr);
td->error = 1;
musbotg_channel_free(sc, td);
return (0); /* complete */
}
/*
* Wait while FIFO is empty.
* Do not flush it because it will cause transactions
* with size more then packet size. It might upset
* some devices
*/
if (csr & MUSB2_MASK_CSRL_TXFIFONEMPTY)
return (1);
/* Packet still being processed */
if (csr & MUSB2_MASK_CSRL_TXPKTRDY)
return (1);
if (td->transaction_started) {
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
musbotg_channel_free(sc, td);
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
/* We're not complete - more transactions required */
td->transaction_started = 0;
}
/* check for short packet */
count = td->max_frame_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
while (count > 0) {
uint32_t temp;
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count) {
buf_res.length = count;
}
/* check for unaligned memory address */
if (USB_P2U(buf_res.buffer) & 3) {
usbd_copy_out(td->pc, td->offset,
sc->sc_bounce_buf, count);
temp = count & ~3;
if (temp) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag,
sc->sc_io_hdl, MUSB2_REG_EPFIFO(td->channel),
sc->sc_bounce_buf, temp / 4);
}
temp = count & 3;
if (temp) {
/* receive data 1 byte at a time */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel),
((void *)&sc->sc_bounce_buf[count / 4]), temp);
}
/* update offset and remainder */
td->offset += count;
td->remainder -= count;
break;
}
/* check if we can optimise */
if (buf_res.length >= 4) {
/* transmit data 4 bytes at a time */
bus_space_write_multi_4(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length / 4);
temp = buf_res.length & ~3;
/* update counters */
count -= temp;
td->offset += temp;
td->remainder -= temp;
continue;
}
/* transmit data */
bus_space_write_multi_1(sc->sc_io_tag, sc->sc_io_hdl,
MUSB2_REG_EPFIFO(td->channel), buf_res.buffer,
buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
/* Function address */
MUSB2_WRITE_1(sc, MUSB2_REG_TXFADDR(td->channel),
td->dev_addr);
/* SPLIT transaction */
MUSB2_WRITE_1(sc, MUSB2_REG_TXHADDR(td->channel),
td->haddr);
MUSB2_WRITE_1(sc, MUSB2_REG_TXHUBPORT(td->channel),
td->hport);
/* TX NAK timeout */
if (td->transfer_type & MUSB2_MASK_TI_PROTO_ISOC)
MUSB2_WRITE_1(sc, MUSB2_REG_TXNAKLIMIT, 0);
else
MUSB2_WRITE_1(sc, MUSB2_REG_TXNAKLIMIT, MAX_NAK_TO);
/* Protocol, speed, device endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_TXTI, td->transfer_type);
/* Max packet size */
MUSB2_WRITE_2(sc, MUSB2_REG_TXMAXP, td->reg_max_packet);
if (!td->transaction_started) {
csrh = MUSB2_READ_1(sc, MUSB2_REG_TXCSRH);
DPRINTFN(4, "csrh=0x%02x\n", csrh);
csrh |= MUSB2_MASK_CSRH_TXDT_WREN;
if (td->toggle)
csrh |= MUSB2_MASK_CSRH_TXDT_VAL;
else
csrh &= ~MUSB2_MASK_CSRH_TXDT_VAL;
/* Set data toggle */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH, csrh);
}
/* write command */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXPKTRDY);
/* Update Data Toggle */
td->toggle ^= 1;
td->transaction_started = 1;
return (1); /* not complete */
}
static uint8_t
musbotg_xfer_do_fifo(struct usb_xfer *xfer)
{
struct musbotg_softc *sc;
struct musbotg_td *td;
DPRINTFN(8, "\n");
sc = MUSBOTG_BUS2SC(xfer->xroot->bus);
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 */
musbotg_standard_done(xfer);
return (0); /* complete */
}
static void
musbotg_interrupt_poll(struct musbotg_softc *sc)
{
struct usb_xfer *xfer;
repeat:
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (!musbotg_xfer_do_fifo(xfer)) {
/* queue has been modified */
goto repeat;
}
}
}
void
musbotg_vbus_interrupt(struct musbotg_softc *sc, uint8_t is_on)
{
DPRINTFN(4, "vbus = %u\n", is_on);
USB_BUS_LOCK(&sc->sc_bus);
if (is_on) {
if (!sc->sc_flags.status_vbus) {
sc->sc_flags.status_vbus = 1;
/* complete root HUB interrupt endpoint */
musbotg_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 */
musbotg_root_intr(sc);
}
}
USB_BUS_UNLOCK(&sc->sc_bus);
}
void
musbotg_connect_interrupt(struct musbotg_softc *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
sc->sc_flags.change_connect = 1;
/* complete root HUB interrupt endpoint */
musbotg_root_intr(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
void
musbotg_interrupt(struct musbotg_softc *sc,
uint16_t rxstat, uint16_t txstat, uint8_t stat)
{
uint16_t rx_status;
uint16_t tx_status;
uint8_t usb_status;
uint8_t temp;
uint8_t to = 2;
USB_BUS_LOCK(&sc->sc_bus);
repeat:
/* read all interrupt registers */
usb_status = MUSB2_READ_1(sc, MUSB2_REG_INTUSB);
/* read all FIFO interrupts */
rx_status = MUSB2_READ_2(sc, MUSB2_REG_INTRX);
tx_status = MUSB2_READ_2(sc, MUSB2_REG_INTTX);
rx_status |= rxstat;
tx_status |= txstat;
usb_status |= stat;
/* Clear platform flags after first time */
rxstat = 0;
txstat = 0;
stat = 0;
/* check for any bus state change interrupts */
if (usb_status & (MUSB2_MASK_IRESET |
MUSB2_MASK_IRESUME | MUSB2_MASK_ISUSP |
MUSB2_MASK_ICONN | MUSB2_MASK_IDISC |
MUSB2_MASK_IVBUSERR)) {
DPRINTFN(4, "real bus interrupt 0x%08x\n", usb_status);
if (usb_status & MUSB2_MASK_IRESET) {
/* 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;
/* determine line speed */
temp = MUSB2_READ_1(sc, MUSB2_REG_POWER);
if (temp & MUSB2_MASK_HSMODE)
sc->sc_flags.status_high_speed = 1;
else
sc->sc_flags.status_high_speed = 0;
/*
* After reset all interrupts are on and we need to
* turn them off!
*/
temp = MUSB2_MASK_IRESET;
/* disable resume interrupt */
temp &= ~MUSB2_MASK_IRESUME;
/* enable suspend interrupt */
temp |= MUSB2_MASK_ISUSP;
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, temp);
/* disable TX and RX interrupts */
MUSB2_WRITE_2(sc, MUSB2_REG_INTTXE, 0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTRXE, 0);
}
/*
* If RXRSM and RXSUSP 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 (usb_status & MUSB2_MASK_IRESUME) {
if (sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 1;
temp = MUSB2_READ_1(sc, MUSB2_REG_INTUSBE);
/* disable resume interrupt */
temp &= ~MUSB2_MASK_IRESUME;
/* enable suspend interrupt */
temp |= MUSB2_MASK_ISUSP;
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, temp);
}
} else if (usb_status & MUSB2_MASK_ISUSP) {
if (!sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 1;
sc->sc_flags.change_suspend = 1;
temp = MUSB2_READ_1(sc, MUSB2_REG_INTUSBE);
/* disable suspend interrupt */
temp &= ~MUSB2_MASK_ISUSP;
/* enable resume interrupt */
temp |= MUSB2_MASK_IRESUME;
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, temp);
}
}
if (usb_status &
(MUSB2_MASK_ICONN | MUSB2_MASK_IDISC))
sc->sc_flags.change_connect = 1;
/*
* Host Mode: There is no IRESET so assume bus is
* always in reset state once device is connected.
*/
if (sc->sc_mode == MUSB2_HOST_MODE) {
/* check for VBUS error in USB host mode */
if (usb_status & MUSB2_MASK_IVBUSERR) {
temp = MUSB2_READ_1(sc, MUSB2_REG_DEVCTL);
temp |= MUSB2_MASK_SESS;
MUSB2_WRITE_1(sc, MUSB2_REG_DEVCTL, temp);
}
if (usb_status & MUSB2_MASK_ICONN)
sc->sc_flags.status_bus_reset = 1;
if (usb_status & MUSB2_MASK_IDISC)
sc->sc_flags.status_bus_reset = 0;
}
/* complete root HUB interrupt endpoint */
musbotg_root_intr(sc);
}
/* check for any endpoint interrupts */
if (rx_status || tx_status) {
DPRINTFN(4, "real endpoint interrupt "
"rx=0x%04x, tx=0x%04x\n", rx_status, tx_status);
}
/* poll one time regardless of FIFO status */
musbotg_interrupt_poll(sc);
if (--to)
goto repeat;
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
musbotg_setup_standard_chain_sub(struct musbotg_std_temp *temp)
{
struct musbotg_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->error = 0;
td->transaction_started = 0;
td->did_stall = temp->did_stall;
td->short_pkt = temp->short_pkt;
td->alt_next = temp->setup_alt_next;
td->channel = temp->channel;
td->dev_addr = temp->dev_addr;
td->haddr = temp->haddr;
td->hport = temp->hport;
td->transfer_type = temp->transfer_type;
}
static void
musbotg_setup_standard_chain(struct usb_xfer *xfer)
{
struct musbotg_std_temp temp;
struct musbotg_softc *sc;
struct musbotg_td *td;
uint32_t x;
uint8_t ep_no;
uint8_t xfer_type;
enum usb_dev_speed speed;
int tx;
int dev_addr;
DPRINTFN(8, "addr=%d endpt=%d sumlen=%d speed=%d\n",
xfer->address, UE_GET_ADDR(xfer->endpointno),
xfer->sumlen, usbd_get_speed(xfer->xroot->udev));
sc = MUSBOTG_BUS2SC(xfer->xroot->bus);
ep_no = (xfer->endpointno & UE_ADDR);
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 */
dev_addr = xfer->address;
xfer_type = xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE;
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 ||
xfer->flags_int.isochronous_xfr;
temp.did_stall = !xfer->flags_int.control_stall;
temp.channel = -1;
temp.dev_addr = dev_addr;
temp.haddr = xfer->xroot->udev->hs_hub_addr;
temp.hport = xfer->xroot->udev->hs_port_no;
if (xfer->flags_int.usb_mode == USB_MODE_HOST) {
speed = usbd_get_speed(xfer->xroot->udev);
switch (speed) {
case USB_SPEED_LOW:
temp.transfer_type = MUSB2_MASK_TI_SPEED_LO;
break;
case USB_SPEED_FULL:
temp.transfer_type = MUSB2_MASK_TI_SPEED_FS;
break;
case USB_SPEED_HIGH:
temp.transfer_type = MUSB2_MASK_TI_SPEED_HS;
break;
default:
temp.transfer_type = 0;
DPRINTFN(-1, "Invalid USB speed: %d\n", speed);
break;
}
switch (xfer_type) {
case UE_CONTROL:
temp.transfer_type |= MUSB2_MASK_TI_PROTO_CTRL;
break;
case UE_ISOCHRONOUS:
temp.transfer_type |= MUSB2_MASK_TI_PROTO_ISOC;
break;
case UE_BULK:
temp.transfer_type |= MUSB2_MASK_TI_PROTO_BULK;
break;
case UE_INTERRUPT:
temp.transfer_type |= MUSB2_MASK_TI_PROTO_INTR;
break;
default:
DPRINTFN(-1, "Invalid USB transfer type: %d\n",
xfer_type);
break;
}
temp.transfer_type |= ep_no;
td->toggle = xfer->endpoint->toggle_next;
}
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
if (xfer->flags_int.usb_mode == USB_MODE_DEVICE)
temp.func = &musbotg_dev_ctrl_setup_rx;
else
temp.func = &musbotg_host_ctrl_setup_tx;
temp.len = xfer->frlengths[0];
temp.pc = xfer->frbuffers + 0;
temp.short_pkt = temp.len ? 1 : 0;
musbotg_setup_standard_chain_sub(&temp);
}
x = 1;
} else {
x = 0;
}
tx = 0;
if (x != xfer->nframes) {
if (xfer->endpointno & UE_DIR_IN)
tx = 1;
if (xfer->flags_int.usb_mode == USB_MODE_HOST) {
tx = !tx;
if (tx) {
if (xfer->flags_int.control_xfr)
temp.func = &musbotg_host_ctrl_data_tx;
else
temp.func = &musbotg_host_data_tx;
} else {
if (xfer->flags_int.control_xfr)
temp.func = &musbotg_host_ctrl_data_rx;
else
temp.func = &musbotg_host_data_rx;
}
} else {
if (tx) {
if (xfer->flags_int.control_xfr)
temp.func = &musbotg_dev_ctrl_data_tx;
else
temp.func = &musbotg_dev_data_tx;
} else {
if (xfer->flags_int.control_xfr)
temp.func = &musbotg_dev_ctrl_data_rx;
else
temp.func = &musbotg_dev_data_rx;
}
}
/* setup "pc" pointer */
temp.pc = xfer->frbuffers + x;
}
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 {
if (xfer->flags_int.isochronous_xfr) {
/* isochronous data transfer */
/* don't force short */
temp.short_pkt = 1;
} else {
/* regular data transfer */
temp.short_pkt = (xfer->flags.force_short_xfer ? 0 : 1);
}
}
musbotg_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;
}
}
/* check for control transfer */
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 should append a status stage */
if (!xfer->flags_int.control_act) {
/*
* Send a DATA1 message and invert the current
* endpoint direction.
*/
if (sc->sc_mode == MUSB2_DEVICE_MODE)
temp.func = &musbotg_dev_ctrl_status;
else {
if (xfer->endpointno & UE_DIR_IN)
temp.func = musbotg_host_ctrl_status_tx;
else
temp.func = musbotg_host_ctrl_status_rx;
}
musbotg_setup_standard_chain_sub(&temp);
}
}
/* must have at least one frame! */
td = temp.td;
xfer->td_transfer_last = td;
}
static void
musbotg_timeout(void *arg)
{
struct usb_xfer *xfer = arg;
DPRINTFN(1, "xfer=%p\n", xfer);
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
/* transfer is transferred */
musbotg_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
musbotg_ep_int_set(struct musbotg_softc *sc, int channel, int on)
{
uint16_t temp;
/*
* Only enable the endpoint interrupt when we are
* actually waiting for data, hence we are dealing
* with level triggered interrupts !
*/
DPRINTFN(1, "ep_no=%d, on=%d\n", channel, on);
if (channel == -1)
return;
if (channel == 0) {
temp = MUSB2_READ_2(sc, MUSB2_REG_INTTXE);
if (on)
temp |= MUSB2_MASK_EPINT(0);
else
temp &= ~MUSB2_MASK_EPINT(0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTTXE, temp);
} else {
temp = MUSB2_READ_2(sc, MUSB2_REG_INTRXE);
if (on)
temp |= MUSB2_MASK_EPINT(channel);
else
temp &= ~MUSB2_MASK_EPINT(channel);
MUSB2_WRITE_2(sc, MUSB2_REG_INTRXE, temp);
temp = MUSB2_READ_2(sc, MUSB2_REG_INTTXE);
if (on)
temp |= MUSB2_MASK_EPINT(channel);
else
temp &= ~MUSB2_MASK_EPINT(channel);
MUSB2_WRITE_2(sc, MUSB2_REG_INTTXE, temp);
}
if (sc->sc_ep_int_set)
sc->sc_ep_int_set(sc, channel, on);
}
static void
musbotg_start_standard_chain(struct usb_xfer *xfer)
{
DPRINTFN(8, "\n");
/* poll one time */
if (musbotg_xfer_do_fifo(xfer)) {
DPRINTFN(14, "enabled interrupts on endpoint\n");
/* 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,
&musbotg_timeout, xfer->timeout);
}
}
}
static void
musbotg_root_intr(struct musbotg_softc *sc)
{
DPRINTFN(8, "\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
musbotg_standard_done_sub(struct usb_xfer *xfer)
{
struct musbotg_td *td;
uint32_t len;
uint8_t error;
DPRINTFN(8, "\n");
td = xfer->td_transfer_cache;
do {
len = td->remainder;
xfer->endpoint->toggle_next = td->toggle;
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 ||
xfer->flags_int.isochronous_xfr) {
/* 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
musbotg_standard_done(struct usb_xfer *xfer)
{
usb_error_t err = 0;
DPRINTFN(12, "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 = musbotg_standard_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = musbotg_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 = musbotg_standard_done_sub(xfer);
}
done:
musbotg_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* musbotg_device_done
*
* NOTE: this function can be called more than one time on the
* same USB transfer!
*------------------------------------------------------------------------*/
static void
musbotg_device_done(struct usb_xfer *xfer, usb_error_t error)
{
struct musbotg_td *td;
struct musbotg_softc *sc;
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
DPRINTFN(1, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
DPRINTFN(14, "disabled interrupts on endpoint\n");
sc = MUSBOTG_BUS2SC(xfer->xroot->bus);
td = xfer->td_transfer_cache;
if (td && (td->channel != -1))
musbotg_channel_free(sc, td);
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
static void
musbotg_xfer_stall(struct usb_xfer *xfer)
{
musbotg_device_done(xfer, USB_ERR_STALLED);
}
static void
musbotg_set_stall(struct usb_device *udev,
struct usb_endpoint *ep, uint8_t *did_stall)
{
struct musbotg_softc *sc;
uint8_t ep_no;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
DPRINTFN(4, "endpoint=%p\n", ep);
/* set FORCESTALL */
sc = MUSBOTG_BUS2SC(udev->bus);
ep_no = (ep->edesc->bEndpointAddress & UE_ADDR);
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, ep_no);
if (ep->edesc->bEndpointAddress & UE_DIR_IN) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXSENDSTALL);
} else {
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXSENDSTALL);
}
}
static void
musbotg_clear_stall_sub(struct musbotg_softc *sc, uint16_t wMaxPacket,
uint8_t ep_no, uint8_t ep_type, uint8_t ep_dir)
{
uint16_t mps;
uint16_t temp;
uint8_t csr;
if (ep_type == UE_CONTROL) {
/* clearing stall is not needed */
return;
}
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, ep_no);
/* compute max frame size */
mps = wMaxPacket & 0x7FF;
switch ((wMaxPacket >> 11) & 3) {
case 1:
mps *= 2;
break;
case 2:
mps *= 3;
break;
default:
break;
}
if (ep_dir == UE_DIR_IN) {
temp = 0;
/* Configure endpoint */
switch (ep_type) {
case UE_INTERRUPT:
MUSB2_WRITE_2(sc, MUSB2_REG_TXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH,
MUSB2_MASK_CSRH_TXMODE | temp);
break;
case UE_ISOCHRONOUS:
MUSB2_WRITE_2(sc, MUSB2_REG_TXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH,
MUSB2_MASK_CSRH_TXMODE |
MUSB2_MASK_CSRH_TXISO | temp);
break;
case UE_BULK:
MUSB2_WRITE_2(sc, MUSB2_REG_TXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRH,
MUSB2_MASK_CSRH_TXMODE | temp);
break;
default:
break;
}
/* Need to flush twice in case of double bufring */
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
if (csr & MUSB2_MASK_CSRL_TXFIFONEMPTY) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXFFLUSH);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
if (csr & MUSB2_MASK_CSRL_TXFIFONEMPTY) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXFFLUSH);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
}
}
/* reset data toggle */
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL,
MUSB2_MASK_CSRL_TXDT_CLR);
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
/* set double/single buffering */
temp = MUSB2_READ_2(sc, MUSB2_REG_TXDBDIS);
if (mps <= (sc->sc_hw_ep_profile[ep_no].
max_in_frame_size / 2)) {
/* double buffer */
temp &= ~(1 << ep_no);
} else {
/* single buffer */
temp |= (1 << ep_no);
}
MUSB2_WRITE_2(sc, MUSB2_REG_TXDBDIS, temp);
/* clear sent stall */
if (csr & MUSB2_MASK_CSRL_TXSENTSTALL) {
MUSB2_WRITE_1(sc, MUSB2_REG_TXCSRL, 0);
csr = MUSB2_READ_1(sc, MUSB2_REG_TXCSRL);
}
} else {
temp = 0;
/* Configure endpoint */
switch (ep_type) {
case UE_INTERRUPT:
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH,
MUSB2_MASK_CSRH_RXNYET | temp);
break;
case UE_ISOCHRONOUS:
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH,
MUSB2_MASK_CSRH_RXNYET |
MUSB2_MASK_CSRH_RXISO | temp);
break;
case UE_BULK:
MUSB2_WRITE_2(sc, MUSB2_REG_RXMAXP, wMaxPacket);
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRH, temp);
break;
default:
break;
}
/* Need to flush twice in case of double bufring */
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
if (csr & MUSB2_MASK_CSRL_RXPKTRDY) {
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXFFLUSH);
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
if (csr & MUSB2_MASK_CSRL_RXPKTRDY) {
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXFFLUSH);
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
}
}
/* reset data toggle */
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL,
MUSB2_MASK_CSRL_RXDT_CLR);
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, 0);
csr = MUSB2_READ_1(sc, MUSB2_REG_RXCSRL);
/* set double/single buffering */
temp = MUSB2_READ_2(sc, MUSB2_REG_RXDBDIS);
if (mps <= (sc->sc_hw_ep_profile[ep_no].
max_out_frame_size / 2)) {
/* double buffer */
temp &= ~(1 << ep_no);
} else {
/* single buffer */
temp |= (1 << ep_no);
}
MUSB2_WRITE_2(sc, MUSB2_REG_RXDBDIS, temp);
/* clear sent stall */
if (csr & MUSB2_MASK_CSRL_RXSENTSTALL) {
MUSB2_WRITE_1(sc, MUSB2_REG_RXCSRL, 0);
}
}
}
static void
musbotg_clear_stall(struct usb_device *udev, struct usb_endpoint *ep)
{
struct musbotg_softc *sc;
struct usb_endpoint_descriptor *ed;
DPRINTFN(4, "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 = MUSBOTG_BUS2SC(udev->bus);
/* get endpoint descriptor */
ed = ep->edesc;
/* reset endpoint */
musbotg_clear_stall_sub(sc,
UGETW(ed->wMaxPacketSize),
(ed->bEndpointAddress & UE_ADDR),
(ed->bmAttributes & UE_XFERTYPE),
(ed->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT)));
}
usb_error_t
musbotg_init(struct musbotg_softc *sc)
{
struct usb_hw_ep_profile *pf;
uint16_t offset;
uint8_t nrx;
uint8_t ntx;
uint8_t temp;
uint8_t fsize;
uint8_t frx;
uint8_t ftx;
uint8_t dynfifo;
DPRINTFN(1, "start\n");
/* set up the bus structure */
sc->sc_bus.usbrev = USB_REV_2_0;
sc->sc_bus.methods = &musbotg_bus_methods;
USB_BUS_LOCK(&sc->sc_bus);
/* turn on clocks */
if (sc->sc_clocks_on) {
(sc->sc_clocks_on) (sc->sc_clocks_arg);
}
/* wait a little for things to stabilise */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 1000);
/* disable all interrupts */
temp = MUSB2_READ_1(sc, MUSB2_REG_DEVCTL);
DPRINTF("pre-DEVCTL=0x%02x\n", temp);
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, 0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTTXE, 0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTRXE, 0);
/* disable pullup */
musbotg_pull_common(sc, 0);
/* wait a little bit (10ms) */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100);
/* disable double packet buffering */
MUSB2_WRITE_2(sc, MUSB2_REG_RXDBDIS, 0xFFFF);
MUSB2_WRITE_2(sc, MUSB2_REG_TXDBDIS, 0xFFFF);
/* enable HighSpeed and ISO Update flags */
MUSB2_WRITE_1(sc, MUSB2_REG_POWER,
MUSB2_MASK_HSENAB | MUSB2_MASK_ISOUPD);
if (sc->sc_mode == MUSB2_DEVICE_MODE) {
/* clear Session bit, if set */
temp = MUSB2_READ_1(sc, MUSB2_REG_DEVCTL);
temp &= ~MUSB2_MASK_SESS;
MUSB2_WRITE_1(sc, MUSB2_REG_DEVCTL, temp);
} else {
/* Enter session for Host mode */
temp = MUSB2_READ_1(sc, MUSB2_REG_DEVCTL);
temp |= MUSB2_MASK_SESS;
MUSB2_WRITE_1(sc, MUSB2_REG_DEVCTL, temp);
}
/* wait a little for things to stabilise */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 10);
DPRINTF("DEVCTL=0x%02x\n", temp);
/* disable testmode */
MUSB2_WRITE_1(sc, MUSB2_REG_TESTMODE, 0);
/* set default value */
MUSB2_WRITE_1(sc, MUSB2_REG_MISC, 0);
/* select endpoint index 0 */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out number of endpoints */
nrx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) / 16);
ntx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) % 16);
/* these numbers exclude the control endpoint */
DPRINTFN(2, "RX/TX endpoints: %u/%u\n", nrx, ntx);
sc->sc_ep_max = (nrx > ntx) ? nrx : ntx;
if (sc->sc_ep_max == 0) {
DPRINTFN(2, "ERROR: Looks like the clocks are off!\n");
}
/* read out configuration data */
sc->sc_conf_data = MUSB2_READ_1(sc, MUSB2_REG_CONFDATA);
DPRINTFN(2, "Config Data: 0x%02x\n",
sc->sc_conf_data);
dynfifo = (sc->sc_conf_data & MUSB2_MASK_CD_DYNFIFOSZ) ? 1 : 0;
if (dynfifo) {
device_printf(sc->sc_bus.bdev, "Dynamic FIFO sizing detected, "
"assuming 16Kbytes of FIFO RAM\n");
}
DPRINTFN(2, "HW version: 0x%04x\n",
MUSB2_READ_1(sc, MUSB2_REG_HWVERS));
/* initialise endpoint profiles */
offset = 0;
for (temp = 1; temp <= sc->sc_ep_max; temp++) {
pf = sc->sc_hw_ep_profile + temp;
/* select endpoint */
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, temp);
fsize = MUSB2_READ_1(sc, MUSB2_REG_FSIZE);
frx = (fsize & MUSB2_MASK_RX_FSIZE) / 16;
ftx = (fsize & MUSB2_MASK_TX_FSIZE);
DPRINTF("Endpoint %u FIFO size: IN=%u, OUT=%u, DYN=%d\n",
temp, ftx, frx, dynfifo);
if (dynfifo) {
if (frx && (temp <= nrx)) {
if (temp == 1) {
frx = 12; /* 4K */
MUSB2_WRITE_1(sc, MUSB2_REG_RXFIFOSZ,
MUSB2_VAL_FIFOSZ_4096 |
MUSB2_MASK_FIFODB);
} else if (temp < 8) {
frx = 10; /* 1K */
MUSB2_WRITE_1(sc, MUSB2_REG_RXFIFOSZ,
MUSB2_VAL_FIFOSZ_512 |
MUSB2_MASK_FIFODB);
} else {
frx = 7; /* 128 bytes */
MUSB2_WRITE_1(sc, MUSB2_REG_RXFIFOSZ,
MUSB2_VAL_FIFOSZ_128);
}
MUSB2_WRITE_2(sc, MUSB2_REG_RXFIFOADD,
offset >> 3);
offset += (1 << frx);
}
if (ftx && (temp <= ntx)) {
if (temp == 1) {
ftx = 12; /* 4K */
MUSB2_WRITE_1(sc, MUSB2_REG_TXFIFOSZ,
MUSB2_VAL_FIFOSZ_4096 |
MUSB2_MASK_FIFODB);
} else if (temp < 8) {
ftx = 10; /* 1K */
MUSB2_WRITE_1(sc, MUSB2_REG_TXFIFOSZ,
MUSB2_VAL_FIFOSZ_512 |
MUSB2_MASK_FIFODB);
} else {
ftx = 7; /* 128 bytes */
MUSB2_WRITE_1(sc, MUSB2_REG_TXFIFOSZ,
MUSB2_VAL_FIFOSZ_128);
}
MUSB2_WRITE_2(sc, MUSB2_REG_TXFIFOADD,
offset >> 3);
offset += (1 << ftx);
}
}
if (frx && ftx && (temp <= nrx) && (temp <= ntx)) {
pf->max_in_frame_size = 1 << ftx;
pf->max_out_frame_size = 1 << frx;
pf->is_simplex = 0; /* duplex */
pf->support_multi_buffer = 1;
pf->support_bulk = 1;
pf->support_interrupt = 1;
pf->support_isochronous = 1;
pf->support_in = 1;
pf->support_out = 1;
} else if (frx && (temp <= nrx)) {
pf->max_out_frame_size = 1 << frx;
pf->max_in_frame_size = 0;
pf->is_simplex = 1; /* simplex */
pf->support_multi_buffer = 1;
pf->support_bulk = 1;
pf->support_interrupt = 1;
pf->support_isochronous = 1;
pf->support_out = 1;
} else if (ftx && (temp <= ntx)) {
pf->max_in_frame_size = 1 << ftx;
pf->max_out_frame_size = 0;
pf->is_simplex = 1; /* simplex */
pf->support_multi_buffer = 1;
pf->support_bulk = 1;
pf->support_interrupt = 1;
pf->support_isochronous = 1;
pf->support_in = 1;
}
}
DPRINTFN(2, "Dynamic FIFO size = %d bytes\n", offset);
/* turn on default interrupts */
if (sc->sc_mode == MUSB2_HOST_MODE)
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, 0xff);
else
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE,
MUSB2_MASK_IRESET);
musbotg_clocks_off(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
/* catch any lost interrupts */
musbotg_do_poll(&sc->sc_bus);
return (0); /* success */
}
void
musbotg_uninit(struct musbotg_softc *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
/* disable all interrupts */
MUSB2_WRITE_1(sc, MUSB2_REG_INTUSBE, 0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTTXE, 0);
MUSB2_WRITE_2(sc, MUSB2_REG_INTRXE, 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;
musbotg_pull_down(sc);
musbotg_clocks_off(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
musbotg_do_poll(struct usb_bus *bus)
{
struct musbotg_softc *sc = MUSBOTG_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
musbotg_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*------------------------------------------------------------------------*
* musbotg bulk support
*------------------------------------------------------------------------*/
static void
musbotg_device_bulk_open(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_bulk_close(struct usb_xfer *xfer)
{
musbotg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
musbotg_device_bulk_enter(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_bulk_start(struct usb_xfer *xfer)
{
/* setup TDs */
musbotg_setup_standard_chain(xfer);
musbotg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods musbotg_device_bulk_methods =
{
.open = musbotg_device_bulk_open,
.close = musbotg_device_bulk_close,
.enter = musbotg_device_bulk_enter,
.start = musbotg_device_bulk_start,
};
/*------------------------------------------------------------------------*
* musbotg control support
*------------------------------------------------------------------------*/
static void
musbotg_device_ctrl_open(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_ctrl_close(struct usb_xfer *xfer)
{
musbotg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
musbotg_device_ctrl_enter(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_ctrl_start(struct usb_xfer *xfer)
{
/* setup TDs */
musbotg_setup_standard_chain(xfer);
musbotg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods musbotg_device_ctrl_methods =
{
.open = musbotg_device_ctrl_open,
.close = musbotg_device_ctrl_close,
.enter = musbotg_device_ctrl_enter,
.start = musbotg_device_ctrl_start,
};
/*------------------------------------------------------------------------*
* musbotg interrupt support
*------------------------------------------------------------------------*/
static void
musbotg_device_intr_open(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_intr_close(struct usb_xfer *xfer)
{
musbotg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
musbotg_device_intr_enter(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_intr_start(struct usb_xfer *xfer)
{
/* setup TDs */
musbotg_setup_standard_chain(xfer);
musbotg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods musbotg_device_intr_methods =
{
.open = musbotg_device_intr_open,
.close = musbotg_device_intr_close,
.enter = musbotg_device_intr_enter,
.start = musbotg_device_intr_start,
};
/*------------------------------------------------------------------------*
* musbotg full speed isochronous support
*------------------------------------------------------------------------*/
static void
musbotg_device_isoc_open(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_device_isoc_close(struct usb_xfer *xfer)
{
musbotg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
musbotg_device_isoc_enter(struct usb_xfer *xfer)
{
struct musbotg_softc *sc = MUSBOTG_BUS2SC(xfer->xroot->bus);
uint32_t temp;
uint32_t nframes;
uint32_t fs_frames;
DPRINTFN(5, "xfer=%p next=%d nframes=%d\n",
xfer, xfer->endpoint->isoc_next, xfer->nframes);
/* get the current frame index */
nframes = MUSB2_READ_2(sc, MUSB2_REG_FRAME);
/*
* check if the frame index is within the window where the frames
* will be inserted
*/
temp = (nframes - xfer->endpoint->isoc_next) & MUSB2_MASK_FRAME;
if (usbd_get_speed(xfer->xroot->udev) == USB_SPEED_HIGH) {
fs_frames = (xfer->nframes + 7) / 8;
} else {
fs_frames = xfer->nframes;
}
if ((xfer->endpoint->is_synced == 0) ||
(temp < fs_frames)) {
/*
* 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) & MUSB2_MASK_FRAME;
xfer->endpoint->is_synced = 1;
DPRINTFN(2, "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) & MUSB2_MASK_FRAME;
/*
* pre-compute when the isochronous transfer will be finished:
*/
xfer->isoc_time_complete =
usb_isoc_time_expand(&sc->sc_bus, nframes) + temp +
fs_frames;
/* compute frame number for next insertion */
xfer->endpoint->isoc_next += fs_frames;
/* setup TDs */
musbotg_setup_standard_chain(xfer);
}
static void
musbotg_device_isoc_start(struct usb_xfer *xfer)
{
/* start TD chain */
musbotg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods musbotg_device_isoc_methods =
{
.open = musbotg_device_isoc_open,
.close = musbotg_device_isoc_close,
.enter = musbotg_device_isoc_enter,
.start = musbotg_device_isoc_start,
};
/*------------------------------------------------------------------------*
* musbotg root control support
*------------------------------------------------------------------------*
* Simulate a hardware HUB by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const struct usb_device_descriptor musbotg_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 usb_device_qualifier musbotg_odevd = {
.bLength = sizeof(struct usb_device_qualifier),
.bDescriptorType = UDESC_DEVICE_QUALIFIER,
.bcdUSB = {0x00, 0x02},
.bDeviceClass = UDCLASS_HUB,
.bDeviceSubClass = UDSUBCLASS_HUB,
.bDeviceProtocol = UDPROTO_FSHUB,
.bMaxPacketSize0 = 0,
.bNumConfigurations = 0,
};
static const struct musbotg_config_desc musbotg_confd = {
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(musbotg_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 | MUSBOTG_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 musbotg_hubd = {
.bDescLength = sizeof(musbotg_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_VENDOR \
"M\0e\0n\0t\0o\0r\0 \0G\0r\0a\0p\0h\0i\0c\0s"
#define STRING_PRODUCT \
"O\0T\0G\0 \0R\0o\0o\0t\0 \0H\0U\0B"
USB_MAKE_STRING_DESC(STRING_VENDOR, musbotg_vendor);
USB_MAKE_STRING_DESC(STRING_PRODUCT, musbotg_product);
static usb_error_t
musbotg_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
struct musbotg_softc *sc = MUSBOTG_BUS2SC(udev->bus);
const void *ptr;
uint16_t len;
uint16_t value;
uint16_t index;
uint8_t reg;
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(musbotg_devd);
ptr = (const void *)&musbotg_devd;
goto tr_valid;
case UDESC_DEVICE_QUALIFIER:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(musbotg_odevd);
ptr = (const void *)&musbotg_odevd;
goto tr_valid;
case UDESC_CONFIG:
if (value & 0xff) {
goto tr_stalled;
}
len = sizeof(musbotg_confd);
ptr = (const void *)&musbotg_confd;
goto tr_valid;
case UDESC_STRING:
switch (value & 0xff) {
case 0: /* Language table */
len = sizeof(usb_string_lang_en);
ptr = (const void *)&usb_string_lang_en;
goto tr_valid;
case 1: /* Vendor */
len = sizeof(musbotg_vendor);
ptr = (const void *)&musbotg_vendor;
goto tr_valid;
case 2: /* Product */
len = sizeof(musbotg_product);
ptr = (const void *)&musbotg_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(8, "UR_CLEAR_PORT_FEATURE on port %d\n", index);
switch (value) {
case UHF_PORT_SUSPEND:
if (sc->sc_mode == MUSB2_HOST_MODE)
musbotg_wakeup_host(sc);
else
musbotg_wakeup_peer(sc);
break;
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 0;
break;
case UHF_C_PORT_ENABLE:
sc->sc_flags.change_enabled = 0;
break;
case UHF_C_PORT_OVER_CURRENT:
sc->sc_flags.change_over_current = 0;
break;
case UHF_C_PORT_RESET:
sc->sc_flags.change_reset = 0;
break;
case UHF_PORT_TEST:
case UHF_PORT_INDICATOR:
/* nops */
break;
case UHF_PORT_POWER:
sc->sc_flags.port_powered = 0;
musbotg_pull_down(sc);
musbotg_clocks_off(sc);
break;
case UHF_C_PORT_CONNECTION:
sc->sc_flags.change_connect = 0;
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(8, "UR_SET_PORT_FEATURE\n");
switch (value) {
case UHF_PORT_ENABLE:
sc->sc_flags.port_enabled = 1;
break;
case UHF_PORT_SUSPEND:
if (sc->sc_mode == MUSB2_HOST_MODE)
musbotg_suspend_host(sc);
break;
case UHF_PORT_RESET:
if (sc->sc_mode == MUSB2_HOST_MODE) {
reg = MUSB2_READ_1(sc, MUSB2_REG_POWER);
reg |= MUSB2_MASK_RESET;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, reg);
/* Wait for 20 msec */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 5);
reg = MUSB2_READ_1(sc, MUSB2_REG_POWER);
reg &= ~MUSB2_MASK_RESET;
MUSB2_WRITE_1(sc, MUSB2_REG_POWER, reg);
/* determine line speed */
reg = MUSB2_READ_1(sc, MUSB2_REG_POWER);
if (reg & MUSB2_MASK_HSMODE)
sc->sc_flags.status_high_speed = 1;
else
sc->sc_flags.status_high_speed = 0;
sc->sc_flags.change_reset = 1;
} else
err = USB_ERR_IOERROR;
break;
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(8, "UR_GET_PORT_STATUS\n");
if (index != 1) {
goto tr_stalled;
}
if (sc->sc_flags.status_vbus) {
musbotg_clocks_on(sc);
musbotg_pull_up(sc);
} else {
musbotg_pull_down(sc);
musbotg_clocks_off(sc);
}
/* Select Device Side Mode */
if (sc->sc_mode == MUSB2_DEVICE_MODE)
value = UPS_PORT_MODE_DEVICE;
else
value = 0;
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.port_over_current)
value |= UPS_OVERCURRENT_INDICATOR;
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_mode == MUSB2_DEVICE_MODE) {
if (sc->sc_flags.status_vbus &&
sc->sc_flags.status_bus_reset) {
/* reset EP0 state */
sc->sc_ep0_busy = 0;
sc->sc_ep0_cmd = 0;
}
}
}
if (sc->sc_flags.change_suspend)
value |= UPS_C_SUSPEND;
if (sc->sc_flags.change_reset)
value |= UPS_C_PORT_RESET;
if (sc->sc_flags.change_over_current)
value |= UPS_C_OVERCURRENT_INDICATOR;
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 *)&musbotg_hubd;
len = sizeof(musbotg_hubd);
goto tr_valid;
tr_stalled:
err = USB_ERR_STALLED;
tr_valid:
done:
*plength = len;
*pptr = ptr;
return (err);
}
static void
musbotg_xfer_setup(struct usb_setup_params *parm)
{
struct musbotg_softc *sc;
struct usb_xfer *xfer;
void *last_obj;
uint32_t ntd;
uint32_t n;
uint8_t ep_no;
sc = MUSBOTG_BUS2SC(parm->udev->bus);
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 = 0x400;
parm->hc_max_frame_size = 0xc00;
if ((parm->methods == &musbotg_device_isoc_methods) ||
(parm->methods == &musbotg_device_intr_methods))
parm->hc_max_packet_count = 3;
else
parm->hc_max_packet_count = 1;
usbd_transfer_setup_sub(parm);
/*
* compute maximum number of TDs
*/
if (parm->methods == &musbotg_device_ctrl_methods) {
ntd = xfer->nframes + 1 /* STATUS */ + 1 /* SYNC */ ;
} else if (parm->methods == &musbotg_device_bulk_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else if (parm->methods == &musbotg_device_intr_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else if (parm->methods == &musbotg_device_isoc_methods) {
ntd = xfer->nframes + 1 /* SYNC */ ;
} else {
ntd = 0;
}
/*
* check if "usbd_transfer_setup_sub" set an error
*/
if (parm->err) {
return;
}
/*
* allocate transfer descriptors
*/
last_obj = NULL;
ep_no = xfer->endpointno & UE_ADDR;
/*
* Check for a valid endpoint profile in USB device mode:
*/
if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) {
const struct usb_hw_ep_profile *pf;
musbotg_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 musbotg_td *td;
if (parm->buf) {
td = USB_ADD_BYTES(parm->buf, parm->size[0]);
/* init TD */
td->max_frame_size = xfer->max_frame_size;
td->reg_max_packet = xfer->max_packet_size |
((xfer->max_packet_count - 1) << 11);
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
musbotg_xfer_unsetup(struct usb_xfer *xfer)
{
return;
}
static void
musbotg_get_dma_delay(struct usb_device *udev, uint32_t *pus)
{
struct musbotg_softc *sc = MUSBOTG_BUS2SC(udev->bus);
if (sc->sc_mode == MUSB2_HOST_MODE)
*pus = 2000; /* microseconds */
else
*pus = 0;
}
static void
musbotg_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
struct musbotg_softc *sc = MUSBOTG_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_rt_addr);
if (udev->device_index != sc->sc_rt_addr) {
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_CONTROL:
ep->methods = &musbotg_device_ctrl_methods;
break;
case UE_INTERRUPT:
ep->methods = &musbotg_device_intr_methods;
break;
case UE_ISOCHRONOUS:
ep->methods = &musbotg_device_isoc_methods;
break;
case UE_BULK:
ep->methods = &musbotg_device_bulk_methods;
break;
default:
/* do nothing */
break;
}
}
}
static void
musbotg_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct musbotg_softc *sc = MUSBOTG_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
musbotg_uninit(sc);
break;
case USB_HW_POWER_SHUTDOWN:
musbotg_uninit(sc);
break;
case USB_HW_POWER_RESUME:
musbotg_init(sc);
break;
default:
break;
}
}
static const struct usb_bus_methods musbotg_bus_methods =
{
.endpoint_init = &musbotg_ep_init,
.get_dma_delay = &musbotg_get_dma_delay,
.xfer_setup = &musbotg_xfer_setup,
.xfer_unsetup = &musbotg_xfer_unsetup,
.get_hw_ep_profile = &musbotg_get_hw_ep_profile,
.xfer_stall = &musbotg_xfer_stall,
.set_stall = &musbotg_set_stall,
.clear_stall = &musbotg_clear_stall,
.roothub_exec = &musbotg_roothub_exec,
.xfer_poll = &musbotg_do_poll,
.set_hw_power_sleep = &musbotg_set_hw_power_sleep,
};
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