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/*
* f_thor.c -- USB TIZEN THOR Downloader gadget function
*
* Copyright (C) 2013 Samsung Electronics
* Lukasz Majewski <l.majewski@samsung.com>
*
* Based on code from:
* git://review.tizen.org/kernel/u-boot
*
* Developed by:
* Copyright (C) 2009 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Sanghee Kim <sh0130.kim@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <errno.h>
#include <common.h>
#include <console.h>
#include <malloc.h>
#include <memalign.h>
#include <version.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/composite.h>
#include <linux/usb/cdc.h>
#include <g_dnl.h>
#include <dfu.h>
#include "f_thor.h"
static void thor_tx_data(unsigned char *data, int len);
static void thor_set_dma(void *addr, int len);
static int thor_rx_data(void);
static struct f_thor *thor_func;
static inline struct f_thor *func_to_thor(struct usb_function *f)
{
return container_of(f, struct f_thor, usb_function);
}
DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_tx_data_buf,
sizeof(struct rsp_box));
DEFINE_CACHE_ALIGN_BUFFER(unsigned char, thor_rx_data_buf,
sizeof(struct rqt_box));
/* ********************************************************** */
/* THOR protocol - transmission handling */
/* ********************************************************** */
DEFINE_CACHE_ALIGN_BUFFER(char, f_name, F_NAME_BUF_SIZE);
static unsigned long long int thor_file_size;
static int alt_setting_num;
static void send_rsp(const struct rsp_box *rsp)
{
memcpy(thor_tx_data_buf, rsp, sizeof(struct rsp_box));
thor_tx_data(thor_tx_data_buf, sizeof(struct rsp_box));
debug("-RSP: %d, %d\n", rsp->rsp, rsp->rsp_data);
}
static void send_data_rsp(s32 ack, s32 count)
{
ALLOC_CACHE_ALIGN_BUFFER(struct data_rsp_box, rsp,
sizeof(struct data_rsp_box));
rsp->ack = ack;
rsp->count = count;
memcpy(thor_tx_data_buf, rsp, sizeof(struct data_rsp_box));
thor_tx_data(thor_tx_data_buf, sizeof(struct data_rsp_box));
debug("-DATA RSP: %d, %d\n", ack, count);
}
static int process_rqt_info(const struct rqt_box *rqt)
{
ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
memset(rsp, 0, sizeof(struct rsp_box));
rsp->rsp = rqt->rqt;
rsp->rsp_data = rqt->rqt_data;
switch (rqt->rqt_data) {
case RQT_INFO_VER_PROTOCOL:
rsp->int_data[0] = VER_PROTOCOL_MAJOR;
rsp->int_data[1] = VER_PROTOCOL_MINOR;
break;
case RQT_INIT_VER_HW:
snprintf(rsp->str_data[0], sizeof(rsp->str_data[0]),
"%x", checkboard());
break;
case RQT_INIT_VER_BOOT:
sprintf(rsp->str_data[0], "%s", U_BOOT_VERSION);
break;
case RQT_INIT_VER_KERNEL:
sprintf(rsp->str_data[0], "%s", "k unknown");
break;
case RQT_INIT_VER_PLATFORM:
sprintf(rsp->str_data[0], "%s", "p unknown");
break;
case RQT_INIT_VER_CSC:
sprintf(rsp->str_data[0], "%s", "c unknown");
break;
default:
return -EINVAL;
}
send_rsp(rsp);
return true;
}
static int process_rqt_cmd(const struct rqt_box *rqt)
{
ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
memset(rsp, 0, sizeof(struct rsp_box));
rsp->rsp = rqt->rqt;
rsp->rsp_data = rqt->rqt_data;
switch (rqt->rqt_data) {
case RQT_CMD_REBOOT:
debug("TARGET RESET\n");
send_rsp(rsp);
g_dnl_unregister();
dfu_free_entities();
#ifdef CONFIG_THOR_RESET_OFF
return RESET_DONE;
#endif
run_command("reset", 0);
break;
case RQT_CMD_POWEROFF:
case RQT_CMD_EFSCLEAR:
send_rsp(rsp);
default:
printf("Command not supported -> cmd: %d\n", rqt->rqt_data);
return -EINVAL;
}
return true;
}
static long long int download_head(unsigned long long total,
unsigned int packet_size,
long long int *left,
int *cnt)
{
long long int rcv_cnt = 0, left_to_rcv, ret_rcv;
struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num);
void *transfer_buffer = dfu_get_buf(dfu_entity);
void *buf = transfer_buffer;
int usb_pkt_cnt = 0, ret;
/*
* Files smaller than THOR_STORE_UNIT_SIZE (now 32 MiB) are stored on
* the medium.
* The packet response is sent on the purpose after successful data
* chunk write. There is a room for improvement when asynchronous write
* is performed.
*/
while (total - rcv_cnt >= packet_size) {
thor_set_dma(buf, packet_size);
buf += packet_size;
ret_rcv = thor_rx_data();
if (ret_rcv < 0)
return ret_rcv;
rcv_cnt += ret_rcv;
debug("%d: RCV data count: %llu cnt: %d\n", usb_pkt_cnt,
rcv_cnt, *cnt);
if ((rcv_cnt % THOR_STORE_UNIT_SIZE) == 0) {
ret = dfu_write(dfu_get_entity(alt_setting_num),
transfer_buffer, THOR_STORE_UNIT_SIZE,
(*cnt)++);
if (ret) {
error("DFU write failed [%d] cnt: %d",
ret, *cnt);
return ret;
}
buf = transfer_buffer;
}
send_data_rsp(0, ++usb_pkt_cnt);
}
/* Calculate the amount of data to arrive from PC (in bytes) */
left_to_rcv = total - rcv_cnt;
/*
* Calculate number of data already received. but not yet stored
* on the medium (they are smaller than THOR_STORE_UNIT_SIZE)
*/
*left = left_to_rcv + buf - transfer_buffer;
debug("%s: left: %llu left_to_rcv: %llu buf: 0x%p\n", __func__,
*left, left_to_rcv, buf);
if (left_to_rcv) {
thor_set_dma(buf, packet_size);
ret_rcv = thor_rx_data();
if (ret_rcv < 0)
return ret_rcv;
rcv_cnt += ret_rcv;
send_data_rsp(0, ++usb_pkt_cnt);
}
debug("%s: %llu total: %llu cnt: %d\n", __func__, rcv_cnt, total, *cnt);
return rcv_cnt;
}
static int download_tail(long long int left, int cnt)
{
struct dfu_entity *dfu_entity;
void *transfer_buffer;
int ret;
debug("%s: left: %llu cnt: %d\n", __func__, left, cnt);
dfu_entity = dfu_get_entity(alt_setting_num);
if (!dfu_entity) {
error("Alt setting: %d entity not found!\n", alt_setting_num);
return -ENOENT;
}
transfer_buffer = dfu_get_buf(dfu_entity);
if (!transfer_buffer) {
error("Transfer buffer not allocated!");
return -ENXIO;
}
if (left) {
ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++);
if (ret) {
error("DFU write failed [%d]: left: %llu", ret, left);
return ret;
}
}
/*
* To store last "packet" or write file from buffer to filesystem
* DFU storage backend requires dfu_flush
*
* This also frees memory malloc'ed by dfu_get_buf(), so no explicit
* need fo call dfu_free_buf() is needed.
*/
ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt);
if (ret)
error("DFU flush failed!");
return ret;
}
static long long int process_rqt_download(const struct rqt_box *rqt)
{
ALLOC_CACHE_ALIGN_BUFFER(struct rsp_box, rsp, sizeof(struct rsp_box));
static long long int left, ret_head;
int file_type, ret = 0;
static int cnt;
memset(rsp, 0, sizeof(struct rsp_box));
rsp->rsp = rqt->rqt;
rsp->rsp_data = rqt->rqt_data;
switch (rqt->rqt_data) {
case RQT_DL_INIT:
thor_file_size = rqt->int_data[0];
debug("INIT: total %d bytes\n", rqt->int_data[0]);
break;
case RQT_DL_FILE_INFO:
file_type = rqt->int_data[0];
if (file_type == FILE_TYPE_PIT) {
puts("PIT table file - not supported\n");
rsp->ack = -ENOTSUPP;
ret = rsp->ack;
break;
}
thor_file_size = rqt->int_data[1];
memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
debug("INFO: name(%s, %d), size(%llu), type(%d)\n",
f_name, 0, thor_file_size, file_type);
rsp->int_data[0] = THOR_PACKET_SIZE;
alt_setting_num = dfu_get_alt(f_name);
if (alt_setting_num < 0) {
error("Alt setting [%d] to write not found!",
alt_setting_num);
rsp->ack = -ENODEV;
ret = rsp->ack;
}
break;
case RQT_DL_FILE_START:
send_rsp(rsp);
ret_head = download_head(thor_file_size, THOR_PACKET_SIZE,
&left, &cnt);
if (ret_head < 0) {
left = 0;
cnt = 0;
}
return ret_head;
case RQT_DL_FILE_END:
debug("DL FILE_END\n");
rsp->ack = download_tail(left, cnt);
ret = rsp->ack;
left = 0;
cnt = 0;
break;
case RQT_DL_EXIT:
debug("DL EXIT\n");
break;
default:
error("Operation not supported: %d", rqt->rqt_data);
ret = -ENOTSUPP;
}
send_rsp(rsp);
return ret;
}
static int process_data(void)
{
ALLOC_CACHE_ALIGN_BUFFER(struct rqt_box, rqt, sizeof(struct rqt_box));
int ret = -EINVAL;
memcpy(rqt, thor_rx_data_buf, sizeof(struct rqt_box));
debug("+RQT: %d, %d\n", rqt->rqt, rqt->rqt_data);
switch (rqt->rqt) {
case RQT_INFO:
ret = process_rqt_info(rqt);
break;
case RQT_CMD:
ret = process_rqt_cmd(rqt);
break;
case RQT_DL:
ret = (int) process_rqt_download(rqt);
break;
case RQT_UL:
puts("RQT: UPLOAD not supported!\n");
break;
default:
error("unknown request (%d)", rqt->rqt);
}
return ret;
}
/* ********************************************************** */
/* THOR USB Function */
/* ********************************************************** */
static inline struct usb_endpoint_descriptor *
ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
struct usb_endpoint_descriptor *fs)
{
if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
return hs;
return fs;
}
static struct usb_interface_descriptor thor_downloader_intf_data = {
.bLength = sizeof(thor_downloader_intf_data),
.bDescriptorType = USB_DT_INTERFACE,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_CDC_DATA,
};
static struct usb_endpoint_descriptor fs_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
static struct usb_endpoint_descriptor fs_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
/* CDC configuration */
static struct usb_interface_descriptor thor_downloader_intf_int = {
.bLength = sizeof(thor_downloader_intf_int),
.bDescriptorType = USB_DT_INTERFACE,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_COMM,
/* 0x02 Abstract Line Control Model */
.bInterfaceSubClass = USB_CDC_SUBCLASS_ACM,
/* 0x01 Common AT commands */
.bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER,
};
static struct usb_cdc_header_desc thor_downloader_cdc_header = {
.bLength = sizeof(thor_downloader_cdc_header),
.bDescriptorType = 0x24, /* CS_INTERFACE */
.bDescriptorSubType = 0x00,
.bcdCDC = 0x0110,
};
static struct usb_cdc_call_mgmt_descriptor thor_downloader_cdc_call = {
.bLength = sizeof(thor_downloader_cdc_call),
.bDescriptorType = 0x24, /* CS_INTERFACE */
.bDescriptorSubType = 0x01,
.bmCapabilities = 0x00,
.bDataInterface = 0x01,
};
static struct usb_cdc_acm_descriptor thor_downloader_cdc_abstract = {
.bLength = sizeof(thor_downloader_cdc_abstract),
.bDescriptorType = 0x24, /* CS_INTERFACE */
.bDescriptorSubType = 0x02,
.bmCapabilities = 0x00,
};
static struct usb_cdc_union_desc thor_downloader_cdc_union = {
.bLength = sizeof(thor_downloader_cdc_union),
.bDescriptorType = 0x24, /* CS_INTERFACE */
.bDescriptorSubType = USB_CDC_UNION_TYPE,
};
static struct usb_endpoint_descriptor fs_int_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 3 | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16(16),
.bInterval = 0x9,
};
static struct usb_interface_assoc_descriptor
thor_iad_descriptor = {
.bLength = sizeof(thor_iad_descriptor),
.bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
.bFirstInterface = 0,
.bInterfaceCount = 2, /* control + data */
.bFunctionClass = USB_CLASS_COMM,
.bFunctionSubClass = USB_CDC_SUBCLASS_ACM,
.bFunctionProtocol = USB_CDC_PROTO_NONE,
};
static struct usb_endpoint_descriptor hs_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16(512),
};
static struct usb_endpoint_descriptor hs_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16(512),
};
static struct usb_endpoint_descriptor hs_int_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16(16),
.bInterval = 0x9,
};
/*
* This attribute vendor descriptor is necessary for correct operation with
* Windows version of THOR download program
*
* It prevents windows driver from sending zero lenght packet (ZLP) after
* each THOR_PACKET_SIZE. This assures consistent behaviour with libusb
*/
static struct usb_cdc_attribute_vendor_descriptor thor_downloader_cdc_av = {
.bLength = sizeof(thor_downloader_cdc_av),
.bDescriptorType = 0x24,
.bDescriptorSubType = 0x80,
.DAUType = 0x0002,
.DAULength = 0x0001,
.DAUValue = 0x00,
};
static const struct usb_descriptor_header *hs_thor_downloader_function[] = {
(struct usb_descriptor_header *)&thor_iad_descriptor,
(struct usb_descriptor_header *)&thor_downloader_intf_int,
(struct usb_descriptor_header *)&thor_downloader_cdc_header,
(struct usb_descriptor_header *)&thor_downloader_cdc_call,
(struct usb_descriptor_header *)&thor_downloader_cdc_abstract,
(struct usb_descriptor_header *)&thor_downloader_cdc_union,
(struct usb_descriptor_header *)&hs_int_desc,
(struct usb_descriptor_header *)&thor_downloader_intf_data,
(struct usb_descriptor_header *)&thor_downloader_cdc_av,
(struct usb_descriptor_header *)&hs_in_desc,
(struct usb_descriptor_header *)&hs_out_desc,
NULL,
};
/*-------------------------------------------------------------------------*/
static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
{
struct usb_request *req;
req = usb_ep_alloc_request(ep, 0);
if (!req)
return req;
req->length = length;
req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length);
if (!req->buf) {
usb_ep_free_request(ep, req);
req = NULL;
}
return req;
}
static int thor_rx_data(void)
{
struct thor_dev *dev = thor_func->dev;
int data_to_rx, tmp, status;
data_to_rx = dev->out_req->length;
tmp = data_to_rx;
do {
dev->out_req->length = data_to_rx;
debug("dev->out_req->length:%d dev->rxdata:%d\n",
dev->out_req->length, dev->rxdata);
status = usb_ep_queue(dev->out_ep, dev->out_req, 0);
if (status) {
error("kill %s: resubmit %d bytes --> %d",
dev->out_ep->name, dev->out_req->length, status);
usb_ep_set_halt(dev->out_ep);
return -EAGAIN;
}
while (!dev->rxdata) {
usb_gadget_handle_interrupts(0);
if (ctrlc())
return -1;
}
dev->rxdata = 0;
data_to_rx -= dev->out_req->actual;
} while (data_to_rx);
return tmp;
}
static void thor_tx_data(unsigned char *data, int len)
{
struct thor_dev *dev = thor_func->dev;
unsigned char *ptr = dev->in_req->buf;
int status;
memset(ptr, 0, len);
memcpy(ptr, data, len);
dev->in_req->length = len;
debug("%s: dev->in_req->length:%d to_cpy:%zd\n", __func__,
dev->in_req->length, sizeof(data));
status = usb_ep_queue(dev->in_ep, dev->in_req, 0);
if (status) {
error("kill %s: resubmit %d bytes --> %d",
dev->in_ep->name, dev->in_req->length, status);
usb_ep_set_halt(dev->in_ep);
}
/* Wait until tx interrupt received */
while (!dev->txdata)
usb_gadget_handle_interrupts(0);
dev->txdata = 0;
}
static void thor_rx_tx_complete(struct usb_ep *ep, struct usb_request *req)
{
struct thor_dev *dev = thor_func->dev;
int status = req->status;
debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req);
switch (status) {
case 0:
if (ep == dev->out_ep)
dev->rxdata = 1;
else
dev->txdata = 1;
break;
/* this endpoint is normally active while we're configured */
case -ECONNABORTED: /* hardware forced ep reset */
case -ECONNRESET: /* request dequeued */
case -ESHUTDOWN: /* disconnect from host */
case -EREMOTEIO: /* short read */
case -EOVERFLOW:
error("ERROR:%d", status);
break;
}
debug("%s complete --> %d, %d/%d\n", ep->name,
status, req->actual, req->length);
}
static struct usb_request *thor_start_ep(struct usb_ep *ep)
{
struct usb_request *req;
req = alloc_ep_req(ep, THOR_PACKET_SIZE);
debug("%s: ep:%p req:%p\n", __func__, ep, req);
if (!req)
return NULL;
memset(req->buf, 0, req->length);
req->complete = thor_rx_tx_complete;
return req;
}
static void thor_setup_complete(struct usb_ep *ep, struct usb_request *req)
{
if (req->status || req->actual != req->length)
debug("setup complete --> %d, %d/%d\n",
req->status, req->actual, req->length);
}
static int
thor_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
{
struct thor_dev *dev = thor_func->dev;
struct usb_request *req = dev->req;
struct usb_gadget *gadget = dev->gadget;
int value = 0;
u16 len = le16_to_cpu(ctrl->wLength);
debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n",
ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex,
ctrl->wLength);
switch (ctrl->bRequest) {
case USB_CDC_REQ_SET_CONTROL_LINE_STATE:
value = 0;
break;
case USB_CDC_REQ_SET_LINE_CODING:
value = len;
/* Line Coding set done = configuration done */
thor_func->dev->configuration_done = 1;
break;
default:
error("thor_setup: unknown request: %d", ctrl->bRequest);
}
if (value >= 0) {
req->length = value;
req->zero = value < len;
value = usb_ep_queue(gadget->ep0, req, 0);
if (value < 0) {
debug("%s: ep_queue: %d\n", __func__, value);
req->status = 0;
}
}
return value;
}
/* Specific to the THOR protocol */
static void thor_set_dma(void *addr, int len)
{
struct thor_dev *dev = thor_func->dev;
debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req);
debug("addr:%p, len:%d\n", addr, len);
dev->out_req->buf = addr;
dev->out_req->length = len;
}
int thor_init(void)
{
struct thor_dev *dev = thor_func->dev;
/* Wait for a device enumeration and configuration settings */
debug("THOR enumeration/configuration setting....\n");
while (!dev->configuration_done)
usb_gadget_handle_interrupts(0);
thor_set_dma(thor_rx_data_buf, strlen("THOR"));
/* detect the download request from Host PC */
if (thor_rx_data() < 0) {
printf("%s: Data not received!\n", __func__);
return -1;
}
if (!strncmp((char *)thor_rx_data_buf, "THOR", strlen("THOR"))) {
puts("Download request from the Host PC\n");
udelay(30 * 1000); /* 30 ms */
strcpy((char *)thor_tx_data_buf, "ROHT");
thor_tx_data(thor_tx_data_buf, strlen("ROHT"));
} else {
puts("Wrong reply information\n");
return -1;
}
return 0;
}
int thor_handle(void)
{
int ret;
/* receive the data from Host PC */
while (1) {
thor_set_dma(thor_rx_data_buf, sizeof(struct rqt_box));
ret = thor_rx_data();
if (ret > 0) {
ret = process_data();
#ifdef CONFIG_THOR_RESET_OFF
if (ret == RESET_DONE)
break;
#endif
if (ret < 0)
return ret;
} else {
printf("%s: No data received!\n", __func__);
break;
}
}
return 0;
}
static int thor_func_bind(struct usb_configuration *c, struct usb_function *f)
{
struct usb_gadget *gadget = c->cdev->gadget;
struct f_thor *f_thor = func_to_thor(f);
struct thor_dev *dev;
struct usb_ep *ep;
int status;
thor_func = f_thor;
dev = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*dev));
if (!dev)
return -ENOMEM;
memset(dev, 0, sizeof(*dev));
dev->gadget = gadget;
f_thor->dev = dev;
debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n",
__func__, c, f);
debug("f_thor: 0x%p thor: 0x%p\n", f_thor, dev);
/* EP0 */
/* preallocate control response and buffer */
dev->req = usb_ep_alloc_request(gadget->ep0, 0);
if (!dev->req) {
status = -ENOMEM;
goto fail;
}
dev->req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
THOR_PACKET_SIZE);
if (!dev->req->buf) {
status = -ENOMEM;
goto fail;
}
dev->req->complete = thor_setup_complete;
/* DYNAMIC interface numbers assignments */
status = usb_interface_id(c, f);
if (status < 0)
goto fail;
thor_downloader_intf_int.bInterfaceNumber = status;
thor_downloader_cdc_union.bMasterInterface0 = status;
status = usb_interface_id(c, f);
if (status < 0)
goto fail;
thor_downloader_intf_data.bInterfaceNumber = status;
thor_downloader_cdc_union.bSlaveInterface0 = status;
/* allocate instance-specific endpoints */
ep = usb_ep_autoconfig(gadget, &fs_in_desc);
if (!ep) {
status = -ENODEV;
goto fail;
}
if (gadget_is_dualspeed(gadget)) {
hs_in_desc.bEndpointAddress =
fs_in_desc.bEndpointAddress;
}
dev->in_ep = ep; /* Store IN EP for enabling @ setup */
ep->driver_data = dev;
ep = usb_ep_autoconfig(gadget, &fs_out_desc);
if (!ep) {
status = -ENODEV;
goto fail;
}
if (gadget_is_dualspeed(gadget))
hs_out_desc.bEndpointAddress =
fs_out_desc.bEndpointAddress;
dev->out_ep = ep; /* Store OUT EP for enabling @ setup */
ep->driver_data = dev;
ep = usb_ep_autoconfig(gadget, &fs_int_desc);
if (!ep) {
status = -ENODEV;
goto fail;
}
dev->int_ep = ep;
ep->driver_data = dev;
if (gadget_is_dualspeed(gadget)) {
hs_int_desc.bEndpointAddress =
fs_int_desc.bEndpointAddress;
f->hs_descriptors = (struct usb_descriptor_header **)
&hs_thor_downloader_function;
if (!f->hs_descriptors)
goto fail;
}
debug("%s: out_ep:%p out_req:%p\n", __func__,
dev->out_ep, dev->out_req);
return 0;
fail:
free(dev);
return status;
}
static void free_ep_req(struct usb_ep *ep, struct usb_request *req)
{
free(req->buf);
usb_ep_free_request(ep, req);
}
static void thor_unbind(struct usb_configuration *c, struct usb_function *f)
{
struct f_thor *f_thor = func_to_thor(f);
struct thor_dev *dev = f_thor->dev;
free(dev);
memset(thor_func, 0, sizeof(*thor_func));
thor_func = NULL;
}
static void thor_func_disable(struct usb_function *f)
{
struct f_thor *f_thor = func_to_thor(f);
struct thor_dev *dev = f_thor->dev;
debug("%s:\n", __func__);
/* Avoid freeing memory when ep is still claimed */
if (dev->in_ep->driver_data) {
free_ep_req(dev->in_ep, dev->in_req);
usb_ep_disable(dev->in_ep);
dev->in_ep->driver_data = NULL;
}
if (dev->out_ep->driver_data) {
dev->out_req->buf = NULL;
usb_ep_free_request(dev->out_ep, dev->out_req);
usb_ep_disable(dev->out_ep);
dev->out_ep->driver_data = NULL;
}
if (dev->int_ep->driver_data) {
usb_ep_disable(dev->int_ep);
dev->int_ep->driver_data = NULL;
}
}
static int thor_eps_setup(struct usb_function *f)
{
struct usb_composite_dev *cdev = f->config->cdev;
struct usb_gadget *gadget = cdev->gadget;
struct thor_dev *dev = thor_func->dev;
struct usb_endpoint_descriptor *d;
struct usb_request *req;
struct usb_ep *ep;
int result;
ep = dev->in_ep;
d = ep_desc(gadget, &hs_in_desc, &fs_in_desc);
debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
result = usb_ep_enable(ep, d);
if (result)
goto exit;
ep->driver_data = cdev; /* claim */
req = thor_start_ep(ep);
if (!req) {
usb_ep_disable(ep);
result = -EIO;
goto exit;
}
dev->in_req = req;
ep = dev->out_ep;
d = ep_desc(gadget, &hs_out_desc, &fs_out_desc);
debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress);
result = usb_ep_enable(ep, d);
if (result)
goto exit;
ep->driver_data = cdev; /* claim */
req = thor_start_ep(ep);
if (!req) {
usb_ep_disable(ep);
result = -EIO;
goto exit;
}
dev->out_req = req;
/* ACM control EP */
ep = dev->int_ep;
ep->driver_data = cdev; /* claim */
exit:
return result;
}
static int thor_func_set_alt(struct usb_function *f,
unsigned intf, unsigned alt)
{
struct thor_dev *dev = thor_func->dev;
int result;
debug("%s: func: %s intf: %d alt: %d\n",
__func__, f->name, intf, alt);
switch (intf) {
case 0:
debug("ACM INTR interface\n");
break;
case 1:
debug("Communication Data interface\n");
result = thor_eps_setup(f);
if (result)
error("%s: EPs setup failed!", __func__);
dev->configuration_done = 1;
break;
}
return 0;
}
static int thor_func_init(struct usb_configuration *c)
{
struct f_thor *f_thor;
int status;
debug("%s: cdev: 0x%p\n", __func__, c->cdev);
f_thor = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_thor));
if (!f_thor)
return -ENOMEM;
memset(f_thor, 0, sizeof(*f_thor));
f_thor->usb_function.name = "f_thor";
f_thor->usb_function.bind = thor_func_bind;
f_thor->usb_function.unbind = thor_unbind;
f_thor->usb_function.setup = thor_func_setup;
f_thor->usb_function.set_alt = thor_func_set_alt;
f_thor->usb_function.disable = thor_func_disable;
status = usb_add_function(c, &f_thor->usb_function);
if (status)
free(f_thor);
return status;
}
int thor_add(struct usb_configuration *c)
{
debug("%s:\n", __func__);
return thor_func_init(c);
}
DECLARE_GADGET_BIND_CALLBACK(usb_dnl_thor, thor_add);