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usb: dfu: introduce dfuMANIFEST state

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on nand flash using ubi, after the download of the new image into
the flash, the "rest" of the nand sectors get erased while flushing
the medium. With current u-boot version dfu-util may show:

Starting download: [##################################################] finished!
state(7) = dfuMANIFEST, status(0) = No error condition is present
unable to read DFU status

as get_status is not answered while erasing sectors, if erasing
needs some time.

So do the following changes to prevent this:

- introduce dfuManifest state
  According to dfu specification
  ( http://www.usb.org/developers/devclass_docs/usbdfu10.pdf ) section 7:
  "the device enters the dfuMANIFEST-SYNC state and awaits the solicitation
   of the status report by the host. Upon receipt of the anticipated
   DFU_GETSTATUS, the device enters the dfuMANIFEST state, where it
   completes its reprogramming operations."

- when stepping into dfuManifest state, sending a PollTimeout
  DFU_MANIFEST_POLL_TIMEOUT in ms, to the host, so the host
  (dfu-util) waits the PollTimeout before sending a get_status again.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
This commit is contained in:
Heiko Schocher 2014-03-18 08:09:56 +01:00 committed by Marek Vasut
parent a2199afea1
commit 001a831986
4 changed files with 55 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
README
View file

@ -1525,6 +1525,16 @@ The following options need to be configured:
this to the maximum filesize (in bytes) for the buffer.
Default is 4 MiB if undefined.
DFU_DEFAULT_POLL_TIMEOUT
Poll timeout [ms], is the timeout a device can send to the
host. The host must wait for this timeout before sending
a subsequent DFU_GET_STATUS request to the device.
DFU_MANIFEST_POLL_TIMEOUT
Poll timeout [ms], which the device sends to the host when
entering dfuMANIFEST state. Host waits this timeout, before
sending again an USB request to the device.
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV

4
drivers/dfu/dfu.c
View file

@ -218,10 +218,6 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
ret = tret;
}
/* end? */
if (size == 0)
ret = dfu_flush(dfu, buf, size, blk_seq_num);
return ret = 0 ? size : ret;
}

48
drivers/usb/gadget/f_dfu.c
View file

@ -164,9 +164,14 @@ static void dnload_request_complete(struct usb_ep *ep, struct usb_request *req)
dfu_write(dfu_get_entity(f_dfu->altsetting), req->buf,
req->length, f_dfu->blk_seq_num);
}
if (req->length == 0)
puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n");
static void dnload_request_flush(struct usb_ep *ep, struct usb_request *req)
{
struct f_dfu *f_dfu = req->context;
dfu_flush(dfu_get_entity(f_dfu->altsetting), req->buf,
req->length, f_dfu->blk_seq_num);
}
static void handle_getstatus(struct usb_request *req)
@ -174,19 +179,22 @@ static void handle_getstatus(struct usb_request *req)
struct dfu_status *dstat = (struct dfu_status *)req->buf;
struct f_dfu *f_dfu = req->context;
dfu_set_poll_timeout(dstat, 0);
switch (f_dfu->dfu_state) {
case DFU_STATE_dfuDNLOAD_SYNC:
case DFU_STATE_dfuDNBUSY:
f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_IDLE;
break;
case DFU_STATE_dfuMANIFEST_SYNC:
f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
break;
case DFU_STATE_dfuMANIFEST:
dfu_set_poll_timeout(dstat, DFU_MANIFEST_POLL_TIMEOUT);
default:
break;
}
dfu_set_poll_timeout(dstat, 0);
if (f_dfu->poll_timeout)
if (!(f_dfu->blk_seq_num %
(dfu_get_buf_size() / DFU_USB_BUFSIZ)))
@ -446,10 +454,11 @@ static int state_dfu_manifest_sync(struct f_dfu *f_dfu,
switch (ctrl->bRequest) {
case USB_REQ_DFU_GETSTATUS:
/* We're MainfestationTolerant */
f_dfu->dfu_state = DFU_STATE_dfuIDLE;
f_dfu->dfu_state = DFU_STATE_dfuMANIFEST;
handle_getstatus(req);
f_dfu->blk_seq_num = 0;
value = RET_STAT_LEN;
req->complete = dnload_request_flush;
break;
case USB_REQ_DFU_GETSTATE:
handle_getstate(req);
@ -463,6 +472,33 @@ static int state_dfu_manifest_sync(struct f_dfu *f_dfu,
return value;
}
static int state_dfu_manifest(struct f_dfu *f_dfu,
const struct usb_ctrlrequest *ctrl,
struct usb_gadget *gadget,
struct usb_request *req)
{
int value = 0;
switch (ctrl->bRequest) {
case USB_REQ_DFU_GETSTATUS:
/* We're MainfestationTolerant */
f_dfu->dfu_state = DFU_STATE_dfuIDLE;
handle_getstatus(req);
f_dfu->blk_seq_num = 0;
value = RET_STAT_LEN;
puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n");
break;
case USB_REQ_DFU_GETSTATE:
handle_getstate(req);
break;
default:
f_dfu->dfu_state = DFU_STATE_dfuERROR;
value = RET_STALL;
break;
}
return value;
}
static int state_dfu_upload_idle(struct f_dfu *f_dfu,
const struct usb_ctrlrequest *ctrl,
struct usb_gadget *gadget,
@ -539,7 +575,7 @@ static dfu_state_fn dfu_state[] = {
state_dfu_dnbusy, /* DFU_STATE_dfuDNBUSY */
state_dfu_dnload_idle, /* DFU_STATE_dfuDNLOAD_IDLE */
state_dfu_manifest_sync, /* DFU_STATE_dfuMANIFEST_SYNC */
NULL, /* DFU_STATE_dfuMANIFEST */
state_dfu_manifest, /* DFU_STATE_dfuMANIFEST */
NULL, /* DFU_STATE_dfuMANIFEST_WAIT_RST */
state_dfu_upload_idle, /* DFU_STATE_dfuUPLOAD_IDLE */
state_dfu_error /* DFU_STATE_dfuERROR */

3
include/dfu.h
View file

@ -80,6 +80,9 @@ static inline unsigned int get_mmc_blk_size(int dev)
#ifndef DFU_DEFAULT_POLL_TIMEOUT
#define DFU_DEFAULT_POLL_TIMEOUT 0
#endif
#ifndef DFU_MANIFEST_POLL_TIMEOUT
#define DFU_MANIFEST_POLL_TIMEOUT DFU_DEFAULT_POLL_TIMEOUT
#endif
struct dfu_entity {
char name[DFU_NAME_SIZE];