102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/* OpenPCD USB handler - handle incoming USB requests on OUT pipe
|
|
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#include <openpcd.h>
|
|
|
|
#include <os/pcd_enumerate.h>
|
|
#include <os/usb_handler.h>
|
|
#include <os/req_ctx.h>
|
|
#include <os/led.h>
|
|
#include <os/dbgu.h>
|
|
|
|
#include "../openpcd.h"
|
|
|
|
static usb_cmd_fn *cmd_hdlrs[16];
|
|
|
|
int usb_hdlr_register(usb_cmd_fn *hdlr, uint8_t class)
|
|
{
|
|
cmd_hdlrs[class] = hdlr;
|
|
return 0;
|
|
}
|
|
|
|
void usb_hdlr_unregister(uint8_t class)
|
|
{
|
|
cmd_hdlrs[class] = NULL;
|
|
}
|
|
|
|
static int usb_in(struct req_ctx *rctx)
|
|
{
|
|
struct openpcd_hdr *poh = (struct openpcd_hdr *) rctx->data;
|
|
usb_cmd_fn *hdlr;
|
|
int ret;
|
|
|
|
/* DEBUGP("usb_in(cls=%d) ", OPENPCD_CMD_CLS(poh->cmd));*/
|
|
|
|
if (rctx->tot_len < sizeof(*poh))
|
|
return -EINVAL;
|
|
|
|
hdlr = cmd_hdlrs[OPENPCD_CMD_CLS(poh->cmd)];
|
|
if (!hdlr) {
|
|
DEBUGPCR("no handler for this class ");
|
|
ret = USB_ERR(USB_ERR_CMD_UNKNOWN);
|
|
} else
|
|
ret = (hdlr)(rctx);
|
|
|
|
if (ret & USB_RET_ERR) {
|
|
poh->val = ret & 0xff;
|
|
poh->flags = OPENPCD_FLAG_ERROR;
|
|
}
|
|
if (ret & USB_RET_RESPOND) {
|
|
req_ctx_set_state(rctx, RCTX_STATE_UDP_EP2_PENDING);
|
|
udp_refill_ep(2);
|
|
}
|
|
|
|
/* DEBUGPCR("");*/
|
|
return (ret & USB_RET_ERR) ? 1 : 0;
|
|
}
|
|
|
|
/* Process all pending request contexts that want to Tx on either
|
|
* IN or INTERRUPT endpoint */
|
|
void usb_out_process(void)
|
|
{
|
|
/* interrupts are likely to be more urgent than bulk */
|
|
udp_refill_ep(3);
|
|
udp_refill_ep(2);
|
|
}
|
|
|
|
/* process incoming USB packets (OUT pipe) that have already been
|
|
* put into request contexts by the UDP IRQ handler */
|
|
void usb_in_process(void)
|
|
{
|
|
struct req_ctx *rctx;
|
|
|
|
while (rctx = req_ctx_find_get(0, RCTX_STATE_UDP_RCV_DONE,
|
|
RCTX_STATE_MAIN_PROCESSING)) {
|
|
/* DEBUGPCRF("found used ctx %u: len=%u",
|
|
req_ctx_num(rctx), rctx->tot_len);*/
|
|
usb_in(rctx);
|
|
}
|
|
udp_unthrottle();
|
|
}
|
|
|