diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/mod_gadget.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/mod_gadget.c | 115 |
1 files changed, 72 insertions, 43 deletions
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 128c8da8db85..4a1d1fcc90fd 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -27,6 +27,7 @@ struct usbhsg_request { struct usb_request req; struct list_head node; + struct usbhs_pkt pkt; }; #define EP_NAME_SIZE 8 @@ -110,6 +111,10 @@ struct usbhsg_recip_handle { #define usbhsg_pipe_to_uep(p) ((p)->mod_private) #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) +#define usbhsg_ureq_to_pkt(u) (&(u)->pkt) +#define usbhsg_pkt_to_ureq(i) \ + container_of(i, struct usbhsg_request, pkt) + #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) /* status */ @@ -319,38 +324,32 @@ static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep, return 0; } -static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep, - struct usbhsg_request *ureq) +/* + * packet send hander + */ +static void usbhsg_try_run_send_packet_bh(struct usbhs_pkt *pkt) { - struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); + struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); struct usb_request *req = &ureq->req; struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); struct device *dev = usbhsg_gpriv_to_dev(gpriv); - void *buf; - int remainder, send; + int remainder, send, maxp; int is_done = 0; int enable; - int maxp; - /* - ********* assume under spin lock ********* - */ - - maxp = usbhs_pipe_get_maxpacket(pipe); - buf = req->buf + req->actual; - remainder = req->length - req->actual; - - send = usbhs_fifo_write(pipe, buf, remainder); + maxp = pkt->maxp; + send = pkt->actual; + remainder = pkt->length; /* - * send < 0 : pipe busy * send = 0 : send zero packet * send > 0 : send data * * send <= max_packet */ - if (send > 0) - req->actual += send; + req->actual += send; /* send all packet ? */ if (send < remainder) @@ -372,13 +371,6 @@ static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep, uep->handler->irq_mask(uep, enable); /* - * usbhs_fifo_enable execute - * - after callback_update, - * - before queue_pop / stage_end - */ - usbhs_pipe_enable(pipe); - - /* * all data were sent ? */ if (is_done) { @@ -389,6 +381,30 @@ static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep, usbhsg_queue_pop(uep, ureq, 0); } +} + +static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep, + struct usbhsg_request *ureq) +{ + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usb_request *req = &ureq->req; + struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); + int ret; + + /* + ********* assume under spin lock ********* + */ + + usbhs_pkt_update(pkt, pipe, + req->buf + req->actual, + req->length - req->actual); + + ret = usbhs_fifo_write(pkt); + if (ret < 0) { + /* pipe is busy. + * retry in interrupt */ + uep->handler->irq_mask(uep, 1); + } return 0; } @@ -408,35 +424,30 @@ static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep, return 0; } -static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep, - struct usbhsg_request *ureq) +/* + * packet recv hander + */ +static void usbhsg_try_run_receive_packet_bh(struct usbhs_pkt *pkt) { - struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); + struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); struct usb_request *req = &ureq->req; struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); struct device *dev = usbhsg_gpriv_to_dev(gpriv); - void *buf; - int maxp; - int remainder, recv; + int remainder, recv, maxp; int is_done = 0; - /* - ********* assume under spin lock ********* - */ - - maxp = usbhs_pipe_get_maxpacket(pipe); - buf = req->buf + req->actual; - remainder = req->length - req->actual; + maxp = pkt->maxp; + remainder = pkt->length; + recv = pkt->actual; - recv = usbhs_fifo_read(pipe, buf, remainder); /* * recv < 0 : pipe busy * recv >= 0 : receive data * * recv <= max_packet */ - if (recv < 0) - return -EBUSY; /* update parameters */ req->actual += recv; @@ -457,8 +468,24 @@ static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep, usbhs_pipe_disable(pipe); usbhsg_queue_pop(uep, ureq, 0); } +} - return 0; +static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep, + struct usbhsg_request *ureq) +{ + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usb_request *req = &ureq->req; + struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); + + /* + ********* assume under spin lock ********* + */ + + usbhs_pkt_update(pkt, pipe, + req->buf + req->actual, + req->length - req->actual); + + return usbhs_fifo_read(pkt); } static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep, @@ -1086,7 +1113,9 @@ static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) /* * pipe initialize and enable DCP */ - usbhs_pipe_init(priv); + usbhs_pipe_init(priv, + usbhsg_try_run_send_packet_bh, + usbhsg_try_run_receive_packet_bh); usbhsg_uep_init(gpriv); usbhsg_dcp_enable(dcp); |