diff options
| author | laforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-22 21:21:28 +0000 |
|---|---|---|
| committer | laforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-22 21:21:28 +0000 |
| commit | 238c6c3c0ac40dcdef82c430fae52cad34ed5a10 (patch) | |
| tree | 75f5529c9c3c906b04dc78ccad227efc12c4d3a8 /firmware/src/os/usb_handler.c | |
| parent | 3b1d90fae2efb52b0b3225be2d4a3dfde22adbbb (diff) | |
fix completely broken logic of processing pending outbound packets. We now do
all the req_ctx state changes from within pcd_handler.c and only expose the
refill_ep() functions.
It's questionable whether we need to keep calling those functions all the time
either. Once kicked off, the tx completion interrupts of the UDC will refill
the pipe as long as there is data available.
So realistically speaking, we'd only need to trigger tx once (and keep
triggering until no EBUSY or other error is signalled anymore). Some form of
state machine would be fine for doing this, one that registers a timer with
the core OS timer (once we have something equivalent to 'struct timer_list'.
git-svn-id: https://svn.openpcd.org:2342/trunk@217 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'firmware/src/os/usb_handler.c')
| -rw-r--r-- | firmware/src/os/usb_handler.c | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/firmware/src/os/usb_handler.c b/firmware/src/os/usb_handler.c index c3d4cfa..1754805 100644 --- a/firmware/src/os/usb_handler.c +++ b/firmware/src/os/usb_handler.c @@ -79,21 +79,9 @@ static int usb_in(struct req_ctx *rctx) * IN or INTERRUPT endpoint */ void usb_out_process(void) { - struct req_ctx *rctx; - - while (rctx = req_ctx_find_get(0, RCTX_STATE_UDP_EP3_PENDING, - RCTX_STATE_UDP_EP3_BUSY)) { - DEBUGPCRF("EP3_BUSY for ctx %u", req_ctx_num(rctx)); - if (udp_refill_ep(3) < 0) - req_ctx_set_state(rctx, RCTX_STATE_UDP_EP3_PENDING); - } - - while (rctx = req_ctx_find_get(0, RCTX_STATE_UDP_EP2_PENDING, - RCTX_STATE_UDP_EP2_BUSY)) { - DEBUGPCRF("EP2_BUSY for ctx %u", req_ctx_num(rctx)); - if (udp_refill_ep(2) < 0) - req_ctx_set_state(rctx, RCTX_STATE_UDP_EP2_PENDING); - } + /* 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 @@ -104,8 +92,8 @@ void usb_in_process(void) 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); + DEBUGPCRF("found used ctx %u: len=%u", + req_ctx_num(rctx), rctx->tot_len); usb_in(rctx); } udp_unthrottle(); |