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dfe11c1395
freebsd-skq/sys/dev/usb/controller/saf1761_otg.c
Hans Petter Selasky dfe11c1395 Enable host controller interrupts. 
Sponsored by:	DARPA, AFRL
2014-05-16 16:36:07 +00:00

2712 lines
64 KiB
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/* $FreeBSD$ */
/*-
* Copyright (c) 2014 Hans Petter Selasky <hselasky@FreeBSD.org>
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* 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 SAF1761 series USB OTG
* controller.
*
* Datasheet is available from:
* http://www.nxp.com/products/automotive/multimedia/usb/SAF1761BE.html
*/
#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 saf1761_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>
#endif /* USB_GLOBAL_INCLUDE_FILE */
#include <dev/usb/controller/saf1761_otg.h>
#include <dev/usb/controller/saf1761_otg_reg.h>
#define SAF1761_OTG_BUS2SC(bus) \
((struct saf1761_otg_softc *)(((uint8_t *)(bus)) - \
((uint8_t *)&(((struct saf1761_otg_softc *)0)->sc_bus))))
#ifdef USB_DEBUG
static int saf1761_otg_debug = 0;
static int saf1761_otg_forcefs = 0;
static
SYSCTL_NODE(_hw_usb, OID_AUTO, saf1761_otg, CTLFLAG_RW, 0,
"USB SAF1761 DCI");
SYSCTL_INT(_hw_usb_saf1761_otg, OID_AUTO, debug, CTLFLAG_RW,
&saf1761_otg_debug, 0, "SAF1761 DCI debug level");
SYSCTL_INT(_hw_usb_saf1761_otg, OID_AUTO, forcefs, CTLFLAG_RW,
&saf1761_otg_forcefs, 0, "SAF1761 DCI force FULL speed");
#endif
#define SAF1761_OTG_INTR_ENDPT 1
/* prototypes */
static const struct usb_bus_methods saf1761_otg_bus_methods;
static const struct usb_pipe_methods saf1761_otg_non_isoc_methods;
static const struct usb_pipe_methods saf1761_otg_device_isoc_methods;
static saf1761_otg_cmd_t saf1761_host_setup_tx;
static saf1761_otg_cmd_t saf1761_host_bulk_data_rx;
static saf1761_otg_cmd_t saf1761_host_bulk_data_tx;
static saf1761_otg_cmd_t saf1761_host_intr_data_rx;
static saf1761_otg_cmd_t saf1761_host_intr_data_tx;
static saf1761_otg_cmd_t saf1761_host_isoc_data_rx;
static saf1761_otg_cmd_t saf1761_host_isoc_data_tx;
static saf1761_otg_cmd_t saf1761_device_setup_rx;
static saf1761_otg_cmd_t saf1761_device_data_rx;
static saf1761_otg_cmd_t saf1761_device_data_tx;
static saf1761_otg_cmd_t saf1761_device_data_tx_sync;
static void saf1761_otg_device_done(struct usb_xfer *, usb_error_t);
static void saf1761_otg_do_poll(struct usb_bus *);
static void saf1761_otg_standard_done(struct usb_xfer *);
static void saf1761_otg_intr_set(struct usb_xfer *, uint8_t);
static void saf1761_otg_root_intr(struct saf1761_otg_softc *);
/*
* Here is a list of what the SAF1761 chip can support. The main
* limitation is that the sum of the buffer sizes must be less than
* 8192 bytes.
*/
static const struct usb_hw_ep_profile saf1761_otg_ep_profile[] = {
[0] = {
.max_in_frame_size = 64,
.max_out_frame_size = 64,
.is_simplex = 0,
.support_control = 1,
},
[1] = {
.max_in_frame_size = SOTG_HS_MAX_PACKET_SIZE,
.max_out_frame_size = SOTG_HS_MAX_PACKET_SIZE,
.is_simplex = 0,
.support_interrupt = 1,
.support_bulk = 1,
.support_isochronous = 1,
.support_in = 1,
.support_out = 1,
},
};
static void
saf1761_otg_get_hw_ep_profile(struct usb_device *udev,
const struct usb_hw_ep_profile **ppf, uint8_t ep_addr)
{
if (ep_addr == 0) {
*ppf = saf1761_otg_ep_profile + 0;
} else if (ep_addr < 8) {
*ppf = saf1761_otg_ep_profile + 1;
} else {
*ppf = NULL;
}
}
static void
saf1761_otg_pull_up(struct saf1761_otg_softc *sc)
{
/* activate pullup on D+, if possible */
if (!sc->sc_flags.d_pulled_up && sc->sc_flags.port_powered) {
DPRINTF("\n");
sc->sc_flags.d_pulled_up = 1;
}
}
static void
saf1761_otg_pull_down(struct saf1761_otg_softc *sc)
{
/* release pullup on D+, if possible */
if (sc->sc_flags.d_pulled_up) {
DPRINTF("\n");
sc->sc_flags.d_pulled_up = 0;
}
}
static void
saf1761_otg_wakeup_peer(struct saf1761_otg_softc *sc)
{
uint16_t temp;
if (!(sc->sc_flags.status_suspend))
return;
DPRINTFN(5, "\n");
temp = SAF1761_READ_2(sc, SOTG_MODE);
SAF1761_WRITE_2(sc, SOTG_MODE, temp | SOTG_MODE_SNDRSU);
SAF1761_WRITE_2(sc, SOTG_MODE, temp & ~SOTG_MODE_SNDRSU);
/* Wait 8ms for remote wakeup to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 125);
}
static uint8_t
saf1761_host_channel_alloc(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
uint32_t x;
if (td->channel < SOTG_HOST_CHANNEL_MAX)
return (0);
switch (td->ep_type) {
case UE_INTERRUPT:
for (x = 0; x != 32; x++) {
if (sc->sc_host_intr_map & (1 << x))
continue;
sc->sc_host_intr_map |= (1 << x);
td->channel = 32 + x;
return (0);
}
break;
case UE_ISOCHRONOUS:
for (x = 0; x != 32; x++) {
if (sc->sc_host_isoc_map & (1 << x))
continue;
sc->sc_host_isoc_map |= (1 << x);
td->channel = 64 + x;
return (0);
}
break;
default:
for (x = 0; x != 32; x++) {
if (sc->sc_host_async_map & (1 << x))
continue;
sc->sc_host_async_map |= (1 << x);
td->channel = x;
return (0);
}
break;
}
return (1);
}
static void
saf1761_host_channel_free(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
uint32_t x;
if (td->channel >= SOTG_HOST_CHANNEL_MAX)
return;
/* disable channel */
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 0), 0);
switch (td->ep_type) {
case UE_INTERRUPT:
x = td->channel - 32;
sc->sc_host_intr_map &= ~(1 << x);
td->channel = SOTG_HOST_CHANNEL_MAX;
break;
case UE_ISOCHRONOUS:
x = td->channel - 64;
sc->sc_host_isoc_map &= ~(1 << x);
td->channel = SOTG_HOST_CHANNEL_MAX;
break;
default:
x = td->channel - 64;
sc->sc_host_async_map &= ~(1 << x);
td->channel = SOTG_HOST_CHANNEL_MAX;
break;
}
}
static void
saf1761_read_host_fifo_1(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td,
void *buf, uint32_t len)
{
bus_space_read_region_1((sc)->sc_io_tag, (sc)->sc_io_hdl,
SOTG_DATA_ADDR(td->channel), buf, len);
}
static void
saf1761_write_host_fifo_1(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td,
void *buf, uint32_t len)
{
bus_space_write_region_1((sc)->sc_io_tag, (sc)->sc_io_hdl,
SOTG_DATA_ADDR(td->channel), buf, len);
}
static uint8_t
saf1761_host_setup_tx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
struct usb_device_request req __aligned(4);
uint32_t status;
uint32_t count;
if (td->channel < SOTG_HOST_CHANNEL_MAX) {
status = SAF1761_READ_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3));
if (status & (1 << 31)) {
goto busy;
} else if (status & (1 << 30)) {
td->error_stall = 1;
td->error_any = 1;
} else if (status & (3 << 28)) {
td->error_any = 1;
}
count = (status & 0x7FFF);
saf1761_host_channel_free(sc, td);
goto complete;
}
if (saf1761_host_channel_alloc(sc, td))
goto busy;
if (sizeof(req) != td->remainder) {
td->error_any = 1;
goto complete;
}
count = sizeof(req);
usbd_copy_out(td->pc, 0, &req, count);
saf1761_write_host_fifo_1(sc, td, &req, count);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 7), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 6), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 5), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 4), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3),
(1 << 31) | (td->toggle << 25) | (3 << 23));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 2),
SOTG_HC_MEMORY_ADDR(SOTG_DATA_ADDR(td->channel)) << 8);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 1),
td->dw1_value |
(2 << 10) /* SETUP PID */ |
(td->ep_index >> 1));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 0),
(td->ep_index << 31) |
(1 << 29) /* pkt-multiplier */ |
(td->max_packet_size << 18) /* wMaxPacketSize */ |
(count << 3) /* transfer count */ |
1 /* valid */);
td->offset += count;
td->remainder -= count;
td->toggle = 1;
busy:
return (1); /* busy */
complete:
return (0); /* complete */
}
static uint8_t
saf1761_host_bulk_data_rx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
if (td->channel < SOTG_HOST_CHANNEL_MAX) {
uint32_t status;
uint32_t count;
uint8_t got_short;
status = SAF1761_READ_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3));
if (status & (1 << 31)) {
goto busy;
} else if (status & (1 << 30)) {
td->error_stall = 1;
td->error_any = 1;
goto complete;
} else if (status & (3 << 28)) {
td->error_any = 1;
goto complete;
}
count = (status & 0x7FFF);
got_short = 0;
/* 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_any = 1;
goto complete;
}
}
td->toggle ^= 1;
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error_any = 1;
goto complete;
}
saf1761_read_host_fifo_1(sc, td,
sc->sc_bounce_buffer, count);
usbd_copy_in(td->pc, td->offset,
sc->sc_bounce_buffer, count);
td->remainder -= count;
td->offset += count;
saf1761_host_channel_free(sc, td);
/* check if we are complete */
if ((td->remainder == 0) || got_short) {
if (td->short_pkt)
goto complete;
/* else need to receive a zero length packet */
}
}
if (saf1761_host_channel_alloc(sc, td))
goto busy;
/* set toggle, if any */
if (td->set_toggle) {
td->set_toggle = 0;
td->toggle = 1;
}
/* receive one more packet */
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 7), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 6), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 5), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 4), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3),
(1 << 31) | (td->toggle << 25) | (3 << 23));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 2),
SOTG_HC_MEMORY_ADDR(SOTG_DATA_ADDR(td->channel)) << 8);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 1),
td->dw1_value |
(1 << 10) /* IN-PID */ |
(td->ep_index >> 1));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 0),
(td->ep_index << 31) |
(1 << 29) /* pkt-multiplier */ |
(td->max_packet_size << 18) /* wMaxPacketSize */ |
(td->max_packet_size << 3) /* transfer count */ |
1 /* valid */);
busy:
return (1); /* busy */
complete:
return (0); /* complete */
}
static uint8_t
saf1761_host_bulk_data_tx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
uint32_t count;
if (td->channel < SOTG_HOST_CHANNEL_MAX) {
uint32_t status;
status = SAF1761_READ_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3));
if (status & (1 << 31)) {
goto busy;
} else if (status & (1 << 30)) {
td->error_stall = 1;
td->error_any = 1;
} else if (status & (3 << 28)) {
td->error_any = 1;
}
saf1761_host_channel_free(sc, td);
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt)
goto complete;
/* else we need to transmit a short packet */
}
}
if (saf1761_host_channel_alloc(sc, td))
goto busy;
count = td->max_packet_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
usbd_copy_out(td->pc, td->offset, sc->sc_bounce_buffer, count);
saf1761_write_host_fifo_1(sc, td, sc->sc_bounce_buffer, count);
/* set toggle, if any */
if (td->set_toggle) {
td->set_toggle = 0;
td->toggle = 1;
}
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 7), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 6), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 5), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 4), 0);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 3),
(1 << 31) | (td->toggle << 25) | (3 << 23));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 2),
SOTG_HC_MEMORY_ADDR(SOTG_DATA_ADDR(td->channel)) << 8);
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 1),
td->dw1_value |
(0 << 10) /* OUT-PID */ |
(td->ep_index >> 1));
SAF1761_WRITE_4(sc, SOTG_ASYNC_PDT(td->channel) + (4 * 0),
(td->ep_index << 31) |
(1 << 29) /* pkt-multiplier */ |
(td->max_packet_size << 18) /* wMaxPacketSize */ |
(count << 3) /* transfer count */ |
1 /* valid */);
td->offset += count;
td->remainder -= count;
td->toggle ^= 1;
busy:
return (1); /* busy */
complete:
return (0); /* complete */
}
static uint8_t
saf1761_host_intr_data_rx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
return (1); /* busy */
}
static uint8_t
saf1761_host_intr_data_tx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
return (1); /* busy */
}
static uint8_t
saf1761_host_isoc_data_rx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
return (1); /* busy */
}
static uint8_t
saf1761_host_isoc_data_tx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
return (1); /* busy */
}
static void
saf1761_otg_set_address(struct saf1761_otg_softc *sc, uint8_t addr)
{
DPRINTFN(5, "addr=%d\n", addr);
SAF1761_WRITE_1(sc, SOTG_ADDRESS, addr | SOTG_ADDRESS_ENABLE);
}
static void
saf1761_read_device_fifo_1(struct saf1761_otg_softc *sc, void *buf, uint32_t len)
{
bus_space_read_multi_1((sc)->sc_io_tag, (sc)->sc_io_hdl,
SOTG_DATA_PORT, buf, len);
}
static void
saf1761_write_device_fifo_1(struct saf1761_otg_softc *sc, void *buf, uint32_t len)
{
bus_space_write_multi_1((sc)->sc_io_tag, (sc)->sc_io_hdl,
SOTG_DATA_PORT, buf, len);
}
static uint8_t
saf1761_device_setup_rx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
struct usb_device_request req;
uint16_t count;
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX, SOTG_EP_INDEX_EP0SETUP);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) == 0)
goto busy;
/* read buffer length */
count = SAF1761_READ_2(sc, SOTG_BUF_LENGTH);
DPRINTFN(5, "count=%u rem=%u\n", count, td->remainder);
/* clear did stall */
td->did_stall = 0;
/* clear stall */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, 0);
/* verify data length */
if (count != td->remainder) {
DPRINTFN(0, "Invalid SETUP packet "
"length, %d bytes\n", count);
goto busy;
}
if (count != sizeof(req)) {
DPRINTFN(0, "Unsupported SETUP packet "
"length, %d bytes\n", count);
goto busy;
}
/* receive data */
saf1761_read_device_fifo_1(sc, &req, 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)) {
sc->sc_dv_addr = req.wValue[0] & 0x7F;
DPRINTF("Set address %d\n", sc->sc_dv_addr);
} else {
sc->sc_dv_addr = 0xFF;
}
return (0); /* complete */
busy:
/* abort any ongoing transfer */
if (!td->did_stall) {
DPRINTFN(5, "stalling\n");
/* set stall */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_STALL);
td->did_stall = 1;
}
return (1); /* not complete */
}
static uint8_t
saf1761_device_data_rx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
struct usb_page_search buf_res;
uint16_t count;
uint8_t got_short = 0;
if (td->ep_index == 0) {
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX, SOTG_EP_INDEX_EP0SETUP);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) != 0) {
if (td->remainder == 0) {
/*
* We are actually complete and have
* received the next SETUP:
*/
DPRINTFN(5, "faking complete\n");
return (0); /* complete */
}
DPRINTFN(5, "SETUP packet while receiving data\n");
/*
* USB Host Aborted the transfer.
*/
td->error_any = 1;
return (0); /* complete */
}
}
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(td->ep_index << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
SOTG_EP_INDEX_DIR_OUT);
/* enable data stage */
if (td->set_toggle) {
td->set_toggle = 0;
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_DSEN);
}
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) == 0) {
return (1); /* not complete */
}
/* read buffer length */
count = SAF1761_READ_2(sc, SOTG_BUF_LENGTH);
DPRINTFN(5, "rem=%u count=0x%04x\n", td->remainder, count);
/* 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_any = 1;
return (0); /* we are complete */
}
}
/* verify the packet byte count */
if (count > td->remainder) {
/* invalid USB packet */
td->error_any = 1;
return (0); /* we are complete */
}
while (count > 0) {
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count)
buf_res.length = count;
/* receive data */
saf1761_read_device_fifo_1(sc, 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 */
return (0);
}
/* else need to receive a zero length packet */
}
return (1); /* not complete */
}
static uint8_t
saf1761_device_data_tx(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
struct usb_page_search buf_res;
uint16_t count;
uint16_t count_old;
if (td->ep_index == 0) {
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX, SOTG_EP_INDEX_EP0SETUP);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) != 0) {
DPRINTFN(5, "SETUP abort\n");
/*
* USB Host Aborted the transfer.
*/
td->error_any = 1;
return (0); /* complete */
}
}
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(td->ep_index << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
SOTG_EP_INDEX_DIR_IN);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) != 0) {
return (1); /* not complete */
}
/* enable data stage */
if (td->set_toggle) {
td->set_toggle = 0;
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_DSEN);
}
DPRINTFN(5, "rem=%u\n", td->remainder);
count = td->max_packet_size;
if (td->remainder < count) {
/* we have a short packet */
td->short_pkt = 1;
count = td->remainder;
}
count_old = count;
while (count > 0) {
usbd_get_page(td->pc, td->offset, &buf_res);
/* get correct length */
if (buf_res.length > count)
buf_res.length = count;
/* transmit data */
saf1761_write_device_fifo_1(sc, buf_res.buffer, buf_res.length);
/* update counters */
count -= buf_res.length;
td->offset += buf_res.length;
td->remainder -= buf_res.length;
}
if (td->ep_index == 0) {
if (count_old < SOTG_FS_MAX_PACKET_SIZE) {
/* set end of packet */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_VENDP);
}
} else {
if (count_old < SOTG_HS_MAX_PACKET_SIZE) {
/* set end of packet */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_VENDP);
}
}
/* check remainder */
if (td->remainder == 0) {
if (td->short_pkt) {
return (0); /* complete */
}
/* else we need to transmit a short packet */
}
return (1); /* not complete */
}
static uint8_t
saf1761_device_data_tx_sync(struct saf1761_otg_softc *sc, struct saf1761_otg_td *td)
{
if (td->ep_index == 0) {
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX, SOTG_EP_INDEX_EP0SETUP);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) != 0) {
DPRINTFN(5, "Faking complete\n");
return (0); /* complete */
}
}
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(td->ep_index << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
SOTG_EP_INDEX_DIR_IN);
/* check buffer status */
if ((SAF1761_READ_1(sc, SOTG_DCBUFFERSTATUS) &
SOTG_DCBUFFERSTATUS_FILLED_MASK) != 0)
return (1); /* busy */
if (sc->sc_dv_addr != 0xFF) {
/* write function address */
saf1761_otg_set_address(sc, sc->sc_dv_addr);
}
return (0); /* complete */
}
static uint8_t
saf1761_otg_xfer_do_fifo(struct saf1761_otg_softc *sc, struct usb_xfer *xfer)
{
struct saf1761_otg_td *td;
uint8_t toggle;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
while (1) {
if ((td->func) (sc, td)) {
/* operation in progress */
break;
}
if (((void *)td) == xfer->td_transfer_last) {
goto done;
}
if (td->error_any) {
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.
*/
toggle = td->toggle;
td = td->obj_next;
td->toggle = toggle;
xfer->td_transfer_cache = td;
}
return (1); /* not complete */
done:
/* compute all actual lengths */
saf1761_otg_standard_done(xfer);
return (0); /* complete */
}
static void
saf1761_otg_interrupt_poll(struct saf1761_otg_softc *sc)
{
struct usb_xfer *xfer;
repeat:
TAILQ_FOREACH(xfer, &sc->sc_bus.intr_q.head, wait_entry) {
if (!saf1761_otg_xfer_do_fifo(sc, xfer)) {
/* queue has been modified */
goto repeat;
}
}
}
static void
saf1761_otg_wait_suspend(struct saf1761_otg_softc *sc, uint8_t on)
{
if (on) {
sc->sc_intr_enable |= SOTG_DCINTERRUPT_IESUSP;
sc->sc_intr_enable &= ~SOTG_DCINTERRUPT_IERESM;
} else {
sc->sc_intr_enable &= ~SOTG_DCINTERRUPT_IESUSP;
sc->sc_intr_enable |= SOTG_DCINTERRUPT_IERESM;
}
SAF1761_WRITE_4(sc, SOTG_DCINTERRUPT_EN, sc->sc_intr_enable);
}
static void
saf1761_otg_update_vbus(struct saf1761_otg_softc *sc)
{
uint16_t status;
/* read fresh status */
status = SAF1761_READ_2(sc, SOTG_STATUS);
DPRINTFN(4, "STATUS=0x%04x\n", status);
if ((status & SOTG_STATUS_VBUS_VLD) &&
(status & SOTG_STATUS_ID)) {
/* VBUS present and device mode */
if (!sc->sc_flags.status_vbus) {
sc->sc_flags.status_vbus = 1;
/* complete root HUB interrupt endpoint */
saf1761_otg_root_intr(sc);
}
} else {
/* VBUS not-present or host mode */
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 */
saf1761_otg_root_intr(sc);
}
}
}
void
saf1761_otg_interrupt(struct saf1761_otg_softc *sc)
{
uint32_t status;
uint32_t hcstat;
USB_BUS_LOCK(&sc->sc_bus);
hcstat = SAF1761_READ_4(sc, SOTG_HCINTERRUPT);
/* acknowledge all host controller interrupts */
SAF1761_WRITE_4(sc, SOTG_HCINTERRUPT, hcstat);
status = SAF1761_READ_4(sc, SOTG_DCINTERRUPT);
/* acknowledge all device controller interrupts */
SAF1761_WRITE_4(sc, SOTG_DCINTERRUPT, status);
DPRINTF("DCINTERRUPT=0x%08x HCINTERRUPT=0x%08x SOF=0x%04x\n",
status, hcstat, SAF1761_READ_2(sc, SOTG_FRAME_NUM));
/* update VBUS and ID bits, if any */
if (status & SOTG_DCINTERRUPT_IEVBUS) {
saf1761_otg_update_vbus(sc);
}
if (status & SOTG_DCINTERRUPT_IEBRST) {
/* unlock device */
SAF1761_WRITE_2(sc, SOTG_UNLOCK_DEVICE,
SOTG_UNLOCK_DEVICE_CODE);
/* Enable device address */
SAF1761_WRITE_1(sc, SOTG_ADDRESS,
SOTG_ADDRESS_ENABLE);
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;
/* disable resume interrupt */
saf1761_otg_wait_suspend(sc, 1);
/* complete root HUB interrupt endpoint */
saf1761_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 & SOTG_DCINTERRUPT_IERESM) {
/* unlock device */
SAF1761_WRITE_2(sc, SOTG_UNLOCK_DEVICE,
SOTG_UNLOCK_DEVICE_CODE);
if (sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 0;
sc->sc_flags.change_suspend = 1;
/* disable resume interrupt */
saf1761_otg_wait_suspend(sc, 1);
/* complete root HUB interrupt endpoint */
saf1761_otg_root_intr(sc);
}
} else if (status & SOTG_DCINTERRUPT_IESUSP) {
if (!sc->sc_flags.status_suspend) {
sc->sc_flags.status_suspend = 1;
sc->sc_flags.change_suspend = 1;
/* enable resume interrupt */
saf1761_otg_wait_suspend(sc, 0);
/* complete root HUB interrupt endpoint */
saf1761_otg_root_intr(sc);
}
}
/* poll all active transfers */
saf1761_otg_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
saf1761_otg_setup_standard_chain_sub(struct saf1761_otg_std_temp *temp)
{
struct saf1761_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->error_any = 0;
td->error_stall = 0;
td->set_toggle = 0;
td->did_stall = temp->did_stall;
td->short_pkt = temp->short_pkt;
td->alt_next = temp->setup_alt_next;
td->channel = SOTG_HOST_CHANNEL_MAX;
}
static void
saf1761_otg_setup_standard_chain(struct usb_xfer *xfer)
{
struct saf1761_otg_std_temp temp;
struct saf1761_otg_softc *sc;
struct saf1761_otg_td *td;
uint32_t x;
uint8_t ep_no;
uint8_t ep_type;
uint8_t need_sync;
uint8_t is_host;
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;
is_host = (xfer->xroot->udev->flags.usb_mode == USB_MODE_HOST);
sc = SAF1761_OTG_BUS2SC(xfer->xroot->bus);
ep_no = (xfer->endpointno & UE_ADDR);
ep_type = (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE);
/* check if we should prepend a setup message */
if (xfer->flags_int.control_xfr) {
if (xfer->flags_int.control_hdr) {
if (is_host)
temp.func = &saf1761_host_setup_tx;
else
temp.func = &saf1761_device_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;
}
saf1761_otg_setup_standard_chain_sub(&temp);
}
x = 1;
} else {
x = 0;
}
if (x != xfer->nframes) {
if (xfer->endpointno & UE_DIR_IN) {
if (is_host) {
if (ep_type == UE_INTERRUPT)
temp.func = &saf1761_host_intr_data_rx;
else if (ep_type == UE_ISOCHRONOUS)
temp.func = &saf1761_host_isoc_data_rx;
else
temp.func = &saf1761_host_bulk_data_rx;
need_sync = 0;
} else {
temp.func = &saf1761_device_data_tx;
need_sync = 1;
}
} else {
if (is_host) {
if (ep_type == UE_INTERRUPT)
temp.func = &saf1761_host_intr_data_tx;
else if (ep_type == UE_ISOCHRONOUS)
temp.func = &saf1761_host_isoc_data_tx;
else
temp.func = &saf1761_host_bulk_data_tx;
need_sync = 0;
} else {
temp.func = &saf1761_device_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;
}
saf1761_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;
}
}
/* 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 (xfer->endpointno & UE_DIR_IN) {
if (is_host) {
temp.func = &saf1761_host_bulk_data_tx;
need_sync = 0;
} else {
temp.func = &saf1761_device_data_rx;
need_sync = 0;
}
} else {
if (is_host) {
temp.func = &saf1761_host_bulk_data_rx;
need_sync = 0;
} else {
temp.func = &saf1761_device_data_tx;
need_sync = 1;
}
}
temp.len = 0;
temp.short_pkt = 0;
saf1761_otg_setup_standard_chain_sub(&temp);
/* data toggle should be DATA1 */
td = temp.td;
td->set_toggle = 1;
if (need_sync) {
/* we need a SYNC point after TX */
temp.func = &saf1761_device_data_tx_sync;
saf1761_otg_setup_standard_chain_sub(&temp);
}
}
} else {
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 = &saf1761_device_data_tx_sync;
saf1761_otg_setup_standard_chain_sub(&temp);
}
}
/* must have at least one frame! */
td = temp.td;
xfer->td_transfer_last = td;
if (is_host) {
/* get first again */
td = xfer->td_transfer_first;
td->toggle = (xfer->endpoint->toggle_next ? 1 : 0);
}
}
static void
saf1761_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 */
saf1761_otg_device_done(xfer, USB_ERR_TIMEOUT);
}
static void
saf1761_otg_intr_set(struct usb_xfer *xfer, uint8_t set)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(xfer->xroot->bus);
uint8_t ep_no = (xfer->endpointno & UE_ADDR);
uint32_t mask;
DPRINTFN(15, "endpoint=%d set=%d\n", xfer->endpointno, set);
if (ep_no == 0) {
mask = SOTG_DCINTERRUPT_IEPRX(0) |
SOTG_DCINTERRUPT_IEPTX(0) |
SOTG_DCINTERRUPT_IEP0SETUP;
} else if (xfer->endpointno & UE_DIR_IN) {
mask = SOTG_DCINTERRUPT_IEPTX(ep_no);
} else {
mask = SOTG_DCINTERRUPT_IEPRX(ep_no);
}
if (set)
sc->sc_intr_enable |= mask;
else
sc->sc_intr_enable &= ~mask;
SAF1761_WRITE_4(sc, SOTG_DCINTERRUPT_EN, sc->sc_intr_enable);
}
static void
saf1761_otg_start_standard_chain(struct usb_xfer *xfer)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(xfer->xroot->bus);
DPRINTFN(9, "\n");
/* poll one time */
if (saf1761_otg_xfer_do_fifo(sc, xfer)) {
/*
* Only enable the endpoint interrupt when we are
* actually waiting for data, hence we are dealing
* with level triggered interrupts !
*/
saf1761_otg_intr_set(xfer, 1);
/* 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,
&saf1761_otg_timeout, xfer->timeout);
}
}
}
static void
saf1761_otg_root_intr(struct saf1761_otg_softc *sc)
{
DPRINTFN(9, "\n");
USB_BUS_LOCK_ASSERT(&sc->sc_bus, MA_OWNED);
/* set port bit - we only have one port */
sc->sc_hub_idata[0] = 0x02;
uhub_root_intr(&sc->sc_bus, sc->sc_hub_idata,
sizeof(sc->sc_hub_idata));
}
static usb_error_t
saf1761_otg_standard_done_sub(struct usb_xfer *xfer)
{
struct saf1761_otg_td *td;
uint32_t len;
usb_error_t error;
DPRINTFN(9, "\n");
td = xfer->td_transfer_cache;
do {
len = td->remainder;
/* store last data toggle */
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_any = 1;
} else {
xfer->frlengths[xfer->aframes] -= len;
}
}
/* Check for transfer error */
if (td->error_any) {
/* the transfer is finished */
error = (td->error_stall ?
USB_ERR_STALLED : USB_ERR_IOERROR);
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);
}
static void
saf1761_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 = saf1761_otg_standard_done_sub(xfer);
}
xfer->aframes = 1;
if (xfer->td_transfer_cache == NULL) {
goto done;
}
}
while (xfer->aframes != xfer->nframes) {
err = saf1761_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 = saf1761_otg_standard_done_sub(xfer);
}
done:
saf1761_otg_device_done(xfer, err);
}
/*------------------------------------------------------------------------*
* saf1761_otg_device_done
*
* NOTE: this function can be called more than one time on the
* same USB transfer!
*------------------------------------------------------------------------*/
static void
saf1761_otg_device_done(struct usb_xfer *xfer, usb_error_t error)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(xfer->xroot->bus);
USB_BUS_LOCK_ASSERT(xfer->xroot->bus, MA_OWNED);
DPRINTFN(2, "xfer=%p, endpoint=%p, error=%d\n",
xfer, xfer->endpoint, error);
if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) {
saf1761_otg_intr_set(xfer, 0);
} else {
struct saf1761_otg_td *td;
td = xfer->td_transfer_first;
if (td != NULL)
saf1761_host_channel_free(sc, td);
}
/* dequeue transfer and start next transfer */
usbd_transfer_done(xfer, error);
}
static void
saf1761_otg_xfer_stall(struct usb_xfer *xfer)
{
saf1761_otg_device_done(xfer, USB_ERR_STALLED);
}
static void
saf1761_otg_set_stall(struct usb_device *udev,
struct usb_endpoint *ep, uint8_t *did_stall)
{
struct saf1761_otg_softc *sc;
uint8_t ep_no;
uint8_t ep_type;
uint8_t ep_dir;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
/* check mode */
if (udev->flags.usb_mode != USB_MODE_DEVICE) {
/* not supported */
return;
}
DPRINTFN(5, "endpoint=%p\n", ep);
/* set FORCESTALL */
sc = SAF1761_OTG_BUS2SC(udev->bus);
ep_no = (ep->edesc->bEndpointAddress & UE_ADDR);
ep_dir = (ep->edesc->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT));
ep_type = (ep->edesc->bmAttributes & UE_XFERTYPE);
if (ep_type == UE_CONTROL) {
/* should not happen */
return;
}
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(ep_no << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
((ep_dir == UE_DIR_IN) ? SOTG_EP_INDEX_DIR_IN :
SOTG_EP_INDEX_DIR_OUT));
/* set stall */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_STALL);
}
static void
saf1761_otg_clear_stall_sub(struct saf1761_otg_softc *sc,
uint8_t ep_no, uint8_t ep_type, uint8_t ep_dir)
{
if (ep_type == UE_CONTROL) {
/* clearing stall is not needed */
return;
}
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(ep_no << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
((ep_dir == UE_DIR_IN) ? SOTG_EP_INDEX_DIR_IN :
SOTG_EP_INDEX_DIR_OUT));
/* disable endpoint */
SAF1761_WRITE_2(sc, SOTG_EP_TYPE, 0);
/* enable endpoint again - will clear data toggle */
SAF1761_WRITE_2(sc, SOTG_EP_TYPE, ep_type | SOTG_EP_TYPE_ENABLE);
/* clear buffer */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, SOTG_CTRL_FUNC_CLBUF);
/* clear stall */
SAF1761_WRITE_1(sc, SOTG_CTRL_FUNC, 0);
}
static void
saf1761_otg_clear_stall(struct usb_device *udev, struct usb_endpoint *ep)
{
struct saf1761_otg_softc *sc;
struct usb_endpoint_descriptor *ed;
USB_BUS_LOCK_ASSERT(udev->bus, MA_OWNED);
DPRINTFN(5, "endpoint=%p\n", ep);
/* check mode */
if (udev->flags.usb_mode != USB_MODE_DEVICE) {
/* not supported */
return;
}
/* get softc */
sc = SAF1761_OTG_BUS2SC(udev->bus);
/* get endpoint descriptor */
ed = ep->edesc;
/* reset endpoint */
saf1761_otg_clear_stall_sub(sc,
(ed->bEndpointAddress & UE_ADDR),
(ed->bmAttributes & UE_XFERTYPE),
(ed->bEndpointAddress & (UE_DIR_IN | UE_DIR_OUT)));
}
usb_error_t
saf1761_otg_init(struct saf1761_otg_softc *sc)
{
const struct usb_hw_ep_profile *pf;
uint32_t x;
DPRINTF("\n");
/* set up the bus structure */
sc->sc_bus.usbrev = USB_REV_2_0;
sc->sc_bus.methods = &saf1761_otg_bus_methods;
USB_BUS_LOCK(&sc->sc_bus);
/* Enable interrupts */
sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_GLOBAL_INTR_EN |
SOTG_HW_MODE_CTRL_COMN_INT;
/*
* Set correct hardware mode, must be written twice if bus
* width is changed:
*/
SAF1761_WRITE_2(sc, SOTG_HW_MODE_CTRL, sc->sc_hw_mode);
SAF1761_WRITE_4(sc, SOTG_HW_MODE_CTRL, sc->sc_hw_mode);
DPRINTF("DCID=0x%08x\n", SAF1761_READ_4(sc, SOTG_DCCHIP_ID));
/* reset device controller */
SAF1761_WRITE_2(sc, SOTG_MODE, SOTG_MODE_SFRESET);
SAF1761_WRITE_2(sc, SOTG_MODE, 0);
/* wait a bit */
DELAY(1000);
/* reset host controller */
SAF1761_WRITE_4(sc, SOTG_SW_RESET, SOTG_SW_RESET_HC);
SAF1761_WRITE_4(sc, SOTG_USBCMD, SOTG_USBCMD_HCRESET);
/* wait a bit */
DELAY(1000);
SAF1761_WRITE_4(sc, SOTG_SW_RESET, 0);
SAF1761_WRITE_4(sc, SOTG_USBCMD, 0);
/* wait a bit */
DELAY(1000);
/* do a pulldown */
saf1761_otg_pull_down(sc);
/* wait 10ms for pulldown to stabilise */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100);
for (x = 1;; x++) {
saf1761_otg_get_hw_ep_profile(NULL, &pf, x);
if (pf == NULL)
break;
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(x << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
SOTG_EP_INDEX_DIR_IN);
/* select the maximum packet size */
SAF1761_WRITE_2(sc, SOTG_EP_MAXPACKET, pf->max_in_frame_size);
/* select the correct endpoint */
SAF1761_WRITE_1(sc, SOTG_EP_INDEX,
(x << SOTG_EP_INDEX_ENDP_INDEX_SHIFT) |
SOTG_EP_INDEX_DIR_OUT);
/* select the maximum packet size */
SAF1761_WRITE_2(sc, SOTG_EP_MAXPACKET, pf->max_out_frame_size);
}
/* enable interrupts */
SAF1761_WRITE_2(sc, SOTG_MODE, SOTG_MODE_GLINTENA |
SOTG_MODE_CLKAON | SOTG_MODE_WKUPCS);
/* set default values */
SAF1761_WRITE_1(sc, SOTG_INTERRUPT_CFG,
SOTG_INTERRUPT_CFG_CDBGMOD |
SOTG_INTERRUPT_CFG_DDBGMODIN |
SOTG_INTERRUPT_CFG_DDBGMODOUT);
/* enable VBUS and ID interrupt */
SAF1761_WRITE_2(sc, SOTG_IRQ_ENABLE_CLR, 0xFFFF);
SAF1761_WRITE_2(sc, SOTG_IRQ_ENABLE_SET,
SOTG_IRQ_ID | SOTG_IRQ_VBUS_VLD);
/* enable interrupts */
sc->sc_intr_enable = SOTG_DCINTERRUPT_IEVBUS |
SOTG_DCINTERRUPT_IEBRST | SOTG_DCINTERRUPT_IESUSP;
SAF1761_WRITE_4(sc, SOTG_DCINTERRUPT_EN, sc->sc_intr_enable);
/* connect ATX port 1 to device controller */
SAF1761_WRITE_2(sc, SOTG_CTRL_CLR, 0xFFFF);
SAF1761_WRITE_2(sc, SOTG_CTRL_SET, SOTG_CTRL_SW_SEL_HC_DC |
SOTG_CTRL_BDIS_ACON_EN);
/* disable device address */
SAF1761_WRITE_1(sc, SOTG_ADDRESS, 0);
/* enable host controller clock */
SAF1761_WRITE_4(sc, SOTG_POWER_DOWN, SOTG_POWER_DOWN_HC_CLK_EN);
/* wait 10ms for clock */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 100);
/* enable configuration flag */
SAF1761_WRITE_4(sc, SOTG_CONFIGFLAG, SOTG_CONFIGFLAG_ENABLE);
/* clear RAM block */
for (x = 0x400; x != 0x10000; x += 4)
SAF1761_WRITE_4(sc, x, 0);
/* start the HC */
SAF1761_WRITE_4(sc, SOTG_USBCMD, SOTG_USBCMD_RS);
/* enable HC interrupts */
SAF1761_WRITE_4(sc, SOTG_HCINTERRUPT_ENABLE,
SOTG_HCINTERRUPT_OTG_IRQ |
SOTG_HCINTERRUPT_ISO_IRQ |
SOTG_HCINTERRUPT_ALT_IRQ |
SOTG_HCINTERRUPT_INT_IRQ);
/* poll initial VBUS status */
saf1761_otg_update_vbus(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
/* catch any lost interrupts */
saf1761_otg_do_poll(&sc->sc_bus);
return (0); /* success */
}
void
saf1761_otg_uninit(struct saf1761_otg_softc *sc)
{
USB_BUS_LOCK(&sc->sc_bus);
/* disable all interrupts */
SAF1761_WRITE_2(sc, SOTG_MODE, 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;
saf1761_otg_pull_down(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
static void
saf1761_otg_suspend(struct saf1761_otg_softc *sc)
{
/* TODO */
}
static void
saf1761_otg_resume(struct saf1761_otg_softc *sc)
{
/* TODO */
}
static void
saf1761_otg_do_poll(struct usb_bus *bus)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(bus);
USB_BUS_LOCK(&sc->sc_bus);
saf1761_otg_interrupt_poll(sc);
USB_BUS_UNLOCK(&sc->sc_bus);
}
/*------------------------------------------------------------------------*
* saf1761_otg control support
* saf1761_otg interrupt support
* saf1761_otg bulk support
*------------------------------------------------------------------------*/
static void
saf1761_otg_device_non_isoc_open(struct usb_xfer *xfer)
{
return;
}
static void
saf1761_otg_device_non_isoc_close(struct usb_xfer *xfer)
{
saf1761_otg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
saf1761_otg_device_non_isoc_enter(struct usb_xfer *xfer)
{
return;
}
static void
saf1761_otg_device_non_isoc_start(struct usb_xfer *xfer)
{
/* setup TDs */
saf1761_otg_setup_standard_chain(xfer);
saf1761_otg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods saf1761_otg_non_isoc_methods =
{
.open = saf1761_otg_device_non_isoc_open,
.close = saf1761_otg_device_non_isoc_close,
.enter = saf1761_otg_device_non_isoc_enter,
.start = saf1761_otg_device_non_isoc_start,
};
/*------------------------------------------------------------------------*
* saf1761_otg isochronous support
*------------------------------------------------------------------------*/
static void
saf1761_otg_device_isoc_open(struct usb_xfer *xfer)
{
return;
}
static void
saf1761_otg_device_isoc_close(struct usb_xfer *xfer)
{
saf1761_otg_device_done(xfer, USB_ERR_CANCELLED);
}
static void
saf1761_otg_device_isoc_enter(struct usb_xfer *xfer)
{
struct saf1761_otg_softc *sc = SAF1761_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);
/* get the current frame index - we don't need the high bits */
nframes = SAF1761_READ_2(sc, SOTG_FRAME_NUM);
/*
* check if the frame index is within the window where the
* frames will be inserted
*/
temp = (nframes - xfer->endpoint->isoc_next) & SOTG_FRAME_NUM_SOFR_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) & SOTG_FRAME_NUM_SOFR_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) & SOTG_FRAME_NUM_SOFR_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 */
saf1761_otg_setup_standard_chain(xfer);
}
static void
saf1761_otg_device_isoc_start(struct usb_xfer *xfer)
{
/* start TD chain */
saf1761_otg_start_standard_chain(xfer);
}
static const struct usb_pipe_methods saf1761_otg_device_isoc_methods =
{
.open = saf1761_otg_device_isoc_open,
.close = saf1761_otg_device_isoc_close,
.enter = saf1761_otg_device_isoc_enter,
.start = saf1761_otg_device_isoc_start,
};
/*------------------------------------------------------------------------*
* saf1761_otg root control support
*------------------------------------------------------------------------*
* Simulate a hardware HUB by handling all the necessary requests.
*------------------------------------------------------------------------*/
static const struct usb_device_descriptor saf1761_otg_devd = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = UDESC_DEVICE,
.bcdUSB = {0x00, 0x02},
.bDeviceClass = UDCLASS_HUB,
.bDeviceSubClass = UDSUBCLASS_HUB,
.bDeviceProtocol = UDPROTO_FSHUB,
.bMaxPacketSize = 64,
.bcdDevice = {0x00, 0x01},
.iManufacturer = 1,
.iProduct = 2,
.bNumConfigurations = 1,
};
static const struct usb_device_qualifier saf1761_otg_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 saf1761_otg_config_desc saf1761_otg_confd = {
.confd = {
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = UDESC_CONFIG,
.wTotalLength[0] = sizeof(saf1761_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 | SAF1761_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 saf1761_otg_hubd = {
.bDescLength = sizeof(saf1761_otg_hubd),
.bDescriptorType = UDESC_HUB,
.bNbrPorts = SOTG_NUM_PORTS,
HSETW(.wHubCharacteristics, (UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL)),
.bPwrOn2PwrGood = 50,
.bHubContrCurrent = 0,
.DeviceRemovable = {0}, /* port is removable */
};
#define STRING_VENDOR \
"N\0X\0P"
#define STRING_PRODUCT \
"D\0C\0I\0 \0R\0o\0o\0t\0 \0H\0U\0B"
USB_MAKE_STRING_DESC(STRING_VENDOR, saf1761_otg_vendor);
USB_MAKE_STRING_DESC(STRING_PRODUCT, saf1761_otg_product);
static usb_error_t
saf1761_otg_roothub_exec(struct usb_device *udev,
struct usb_device_request *req, const void **pptr, uint16_t *plength)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(udev->bus);
const void *ptr;
uint16_t len;
uint16_t value;
uint16_t index;
uint32_t temp;
uint32_t i;
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:
if (index == SOTG_HOST_PORT_NUM)
goto tr_handle_clear_port_feature_host;
else if (index == SOTG_DEVICE_PORT_NUM)
goto tr_handle_clear_port_feature_device;
else
goto tr_stalled;
case UR_SET_FEATURE:
if (index == SOTG_HOST_PORT_NUM)
goto tr_handle_set_port_feature_host;
else if (index == SOTG_DEVICE_PORT_NUM)
goto tr_handle_set_port_feature_device;
else
goto tr_stalled;
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:
if (index == SOTG_HOST_PORT_NUM)
goto tr_handle_get_port_status_host;
else if (index == SOTG_DEVICE_PORT_NUM)
goto tr_handle_get_port_status_device;
else
goto tr_stalled;
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(saf1761_otg_devd);
ptr = (const void *)&saf1761_otg_devd;
goto tr_valid;
case UDESC_DEVICE_QUALIFIER:
if (value & 0xff)
goto tr_stalled;
len = sizeof(saf1761_otg_odevd);
ptr = (const void *)&saf1761_otg_odevd;
goto tr_valid;
case UDESC_CONFIG:
if (value & 0xff)
goto tr_stalled;
len = sizeof(saf1761_otg_confd);
ptr = (const void *)&saf1761_otg_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(saf1761_otg_vendor);
ptr = (const void *)&saf1761_otg_vendor;
goto tr_valid;
case 2: /* Product */
len = sizeof(saf1761_otg_product);
ptr = (const void *)&saf1761_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_device:
DPRINTFN(9, "UR_CLEAR_FEATURE on port %d\n", index);
switch (value) {
case UHF_PORT_SUSPEND:
saf1761_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;
saf1761_otg_pull_down(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 tr_valid;
}
goto tr_valid;
tr_handle_clear_port_feature_host:
DPRINTFN(9, "UR_CLEAR_FEATURE on port %d\n", index);
temp = SAF1761_READ_4(sc, SOTG_PORTSC1);
switch (value) {
case UHF_PORT_ENABLE:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp & ~SOTG_PORTSC1_PED);
break;
case UHF_PORT_SUSPEND:
if ((temp & SOTG_PORTSC1_SUSP) && (!(temp & SOTG_PORTSC1_FPR)))
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_FPR);
/* wait 20ms for resume sequence to complete */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 50);
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp & ~(SOTG_PORTSC1_SUSP |
SOTG_PORTSC1_FPR | SOTG_PORTSC1_LS /* High Speed */ ));
/* 4ms settle time */
usb_pause_mtx(&sc->sc_bus.bus_mtx, hz / 250);
break;
case UHF_PORT_INDICATOR:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp & ~SOTG_PORTSC1_PIC);
break;
case UHF_PORT_TEST:
case UHF_C_PORT_ENABLE:
case UHF_C_PORT_OVER_CURRENT:
case UHF_C_PORT_RESET:
case UHF_C_PORT_SUSPEND:
/* NOPs */
break;
case UHF_PORT_POWER:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp & ~SOTG_PORTSC1_PP);
break;
case UHF_C_PORT_CONNECTION:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp & ~SOTG_PORTSC1_ECSC);
break;
default:
err = USB_ERR_IOERROR;
goto tr_valid;
}
goto tr_valid;
tr_handle_set_port_feature_device:
DPRINTFN(9, "UR_SET_FEATURE on port %d\n", index);
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 tr_valid;
}
goto tr_valid;
tr_handle_set_port_feature_host:
DPRINTFN(9, "UR_SET_FEATURE on port %d\n", index);
temp = SAF1761_READ_4(sc, SOTG_PORTSC1);
switch (value) {
case UHF_PORT_ENABLE:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_PED);
break;
case UHF_PORT_SUSPEND:
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_SUSP);
break;
case UHF_PORT_RESET:
DPRINTFN(6, "reset port %d\n", index);
/* Start reset sequence. */
temp &= ~(SOTG_PORTSC1_PED | SOTG_PORTSC1_PR);
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_PR);
/* Wait for reset to complete. */
usb_pause_mtx(&sc->sc_bus.bus_mtx,
USB_MS_TO_TICKS(usb_port_root_reset_delay));
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp);
/* Wait for HC to complete reset. */
usb_pause_mtx(&sc->sc_bus.bus_mtx, USB_MS_TO_TICKS(2));
temp = SAF1761_READ_4(sc, SOTG_PORTSC1);
DPRINTF("After reset, status=0x%08x\n", temp);
if (temp & SOTG_PORTSC1_PR) {
device_printf(sc->sc_bus.bdev, "port reset timeout\n");
err = USB_ERR_TIMEOUT;
goto tr_valid;
}
if (!(temp & SOTG_PORTSC1_PED)) {
/* Not a high speed device, give up ownership.*/
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_PO);
break;
}
sc->sc_isreset = 1;
DPRINTF("port %d reset, status = 0x%08x\n", index, temp);
break;
case UHF_PORT_POWER:
DPRINTFN(3, "set port power %d\n", index);
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_PP);
break;
case UHF_PORT_TEST:
DPRINTFN(3, "set port test %d\n", index);
break;
case UHF_PORT_INDICATOR:
DPRINTFN(3, "set port ind %d\n", index);
SAF1761_WRITE_4(sc, SOTG_PORTSC1, temp | SOTG_PORTSC1_PIC);
break;
default:
err = USB_ERR_IOERROR;
goto tr_valid;
}
goto tr_valid;
tr_handle_get_port_status_device:
DPRINTFN(9, "UR_GET_PORT_STATUS on port %d\n", index);
if (sc->sc_flags.status_vbus) {
saf1761_otg_pull_up(sc);
} else {
saf1761_otg_pull_down(sc);
}
/* Select FULL-speed and Device Side Mode */
value = UPS_PORT_MODE_DEVICE;
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_port_status_host:
temp = SAF1761_READ_4(sc, SOTG_PORTSC1);
DPRINTFN(9, "port status=0x%04x\n", temp);
i = UPS_HIGH_SPEED;
if (temp & SOTG_PORTSC1_ECCS)
i |= UPS_CURRENT_CONNECT_STATUS;
if (temp & SOTG_PORTSC1_PED)
i |= UPS_PORT_ENABLED;
if ((temp & SOTG_PORTSC1_SUSP) && !(temp & SOTG_PORTSC1_FPR))
i |= UPS_SUSPEND;
if (temp & SOTG_PORTSC1_PR)
i |= UPS_RESET;
if (temp & SOTG_PORTSC1_PP)
i |= UPS_PORT_POWER;
USETW(sc->sc_hub_temp.ps.wPortStatus, i);
i = 0;
if (temp & SOTG_PORTSC1_ECSC)
i |= UPS_C_CONNECT_STATUS;
if (temp & SOTG_PORTSC1_FPR)
i |= UPS_C_SUSPEND;
if (sc->sc_isreset)
i |= UPS_C_PORT_RESET;
USETW(sc->sc_hub_temp.ps.wPortChange, i);
len = sizeof(sc->sc_hub_temp.ps);
goto tr_valid;
tr_handle_get_class_descriptor:
if (value & 0xFF)
goto tr_stalled;
ptr = (const void *)&saf1761_otg_hubd;
len = sizeof(saf1761_otg_hubd);
goto tr_valid;
tr_stalled:
err = USB_ERR_STALLED;
tr_valid:
*plength = len;
*pptr = ptr;
return (err);
}
static void
saf1761_otg_xfer_setup(struct usb_setup_params *parm)
{
struct saf1761_otg_softc *sc;
struct usb_xfer *xfer;
void *last_obj;
uint32_t dw1;
uint32_t ntd;
uint32_t n;
uint8_t ep_no;
uint8_t ep_type;
sc = SAF1761_OTG_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 = 0x500;
parm->hc_max_packet_count = 1;
parm->hc_max_frame_size = 0x500;
usbd_transfer_setup_sub(parm);
/*
* Compute maximum number of TDs:
*/
ep_type = (xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE);
if (ep_type == UE_CONTROL) {
ntd = xfer->nframes + 1 /* STATUS */ + 1 /* SYNC */ ;
} 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;
ep_no = xfer->endpointno & UE_ADDR;
/*
* Check profile stuff
*/
if (parm->udev->flags.usb_mode == USB_MODE_DEVICE) {
const struct usb_hw_ep_profile *pf;
saf1761_otg_get_hw_ep_profile(parm->udev, &pf, ep_no);
if (pf == NULL) {
/* should not happen */
parm->err = USB_ERR_INVAL;
return;
}
}
dw1 = (xfer->address << 3) | (ep_type << 12);
switch (parm->udev->speed) {
case USB_SPEED_FULL:
case USB_SPEED_LOW:
/* check if root HUB port is running High Speed */
if (parm->udev->parent_hs_hub != NULL) {
dw1 |= (1 << 14);
dw1 |= (parm->udev->hs_port_no << 18);
dw1 |= (parm->udev->hs_hub_addr << 25);
if (parm->udev->speed == USB_SPEED_LOW)
dw1 |= (1 << 17);
}
break;
default:
break;
}
/* align data */
parm->size[0] += ((-parm->size[0]) & (USB_HOST_ALIGN - 1));
for (n = 0; n != ntd; n++) {
struct saf1761_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_index = ep_no;
td->ep_type = ep_type;
td->dw1_value = dw1;
td->obj_next = last_obj;
last_obj = td;
}
parm->size[0] += sizeof(*td);
}
xfer->td_start[0] = last_obj;
}
static void
saf1761_otg_xfer_unsetup(struct usb_xfer *xfer)
{
}
static void
saf1761_otg_ep_init(struct usb_device *udev, struct usb_endpoint_descriptor *edesc,
struct usb_endpoint *ep)
{
DPRINTFN(2, "endpoint=%p, addr=%d, endpt=%d, mode=%d\n",
ep, udev->address,
edesc->bEndpointAddress, udev->flags.usb_mode);
if (udev->parent_hub == NULL) {
/* root HUB has special endpoint handling */
return;
}
if (udev->flags.usb_mode == USB_MODE_DEVICE) {
if (udev->speed != USB_SPEED_FULL &&
udev->speed != USB_SPEED_HIGH) {
/* not supported */
return;
}
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_ISOCHRONOUS:
ep->methods = &saf1761_otg_device_isoc_methods;
break;
default:
ep->methods = &saf1761_otg_non_isoc_methods;
break;
}
} else {
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_CONTROL:
case UE_BULK:
ep->methods = &saf1761_otg_non_isoc_methods;
break;
default:
/* TODO */
break;
}
}
}
static void
saf1761_otg_set_hw_power_sleep(struct usb_bus *bus, uint32_t state)
{
struct saf1761_otg_softc *sc = SAF1761_OTG_BUS2SC(bus);
switch (state) {
case USB_HW_POWER_SUSPEND:
saf1761_otg_suspend(sc);
break;
case USB_HW_POWER_SHUTDOWN:
saf1761_otg_uninit(sc);
break;
case USB_HW_POWER_RESUME:
saf1761_otg_resume(sc);
break;
default:
break;
}
}
static const struct usb_bus_methods saf1761_otg_bus_methods =
{
.endpoint_init = &saf1761_otg_ep_init,
.xfer_setup = &saf1761_otg_xfer_setup,
.xfer_unsetup = &saf1761_otg_xfer_unsetup,
.get_hw_ep_profile = &saf1761_otg_get_hw_ep_profile,
.xfer_stall = &saf1761_otg_xfer_stall,
.set_stall = &saf1761_otg_set_stall,
.clear_stall = &saf1761_otg_clear_stall,
.roothub_exec = &saf1761_otg_roothub_exec,
.xfer_poll = &saf1761_otg_do_poll,
.set_hw_power_sleep = saf1761_otg_set_hw_power_sleep,
};
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