[U-Boot] [PATCH 4/7] usb: rockchip: implement K_FW_LBA_READ_10 command
Alberto Panizzo
alberto at amarulasolutions.com
Thu Jul 5 08:52:16 UTC 2018
Hi Kever,
On Thu, Jul 5, 2018 at 3:19 AM, Kever Yang <kever.yang at rock-chips.com> wrote:
>
> Hi Alberto,
>
>
> On 07/04/2018 03:02 AM, Alberto Panizzo wrote:
> > It is now possible to read from block device al logic layer.
> > Corresponding command on workstation is:
> > rkdeveloptool rl <start_blk> <blk_cnt> <file>
> >
> > Signed-off-by: Alberto Panizzo <alberto at amarulasolutions.com>
> > ---
> > arch/arm/include/asm/arch-rockchip/f_rockusb.h | 2 +
> > drivers/usb/gadget/f_rockusb.c | 102 ++++++++++++++++++++++++-
> > 2 files changed, 103 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm/include/asm/arch-rockchip/f_rockusb.h b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
> > index f5cad8e..f04d401 100644
> > --- a/arch/arm/include/asm/arch-rockchip/f_rockusb.h
> > +++ b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
> > @@ -120,6 +120,8 @@ struct f_rockusb {
> > unsigned int lba;
> > unsigned int dl_size;
> > unsigned int dl_bytes;
> > + unsigned int ul_size;
> > + unsigned int ul_bytes;
> > struct blk_desc *desc;
> > int reboot_flag;
> > void *buf;
> > diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c
> > index 7612871..dbf31cb 100644
> > --- a/drivers/usb/gadget/f_rockusb.c
> > +++ b/drivers/usb/gadget/f_rockusb.c
> > @@ -340,6 +340,7 @@ static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
> >
> > memcpy(in_req->buf, buffer, buffer_size);
> > in_req->length = buffer_size;
> > + debug("Transferring 0x%x bytes\n", buffer_size);
> > usb_ep_dequeue(rockusb_func->in_ep, in_req);
> > ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
> > if (ret)
> > @@ -434,6 +435,79 @@ static unsigned int rx_bytes_expected(struct usb_ep *ep)
> > return rx_remain;
> > }
> >
> > +/* usb_request complete call back to handle upload image */
> > +static void tx_handler_ul_image(struct usb_ep *ep, struct usb_request *req)
>
> Could you use another name like '_rl_' instead of '_ul_', and since
> there is a prefix 'tx',
> maybe we don't need this '_ul_'? Because there is a rockusb cmd 'UL' or
> 'ul' means
> 'upgrade loader'.
Name has been chosen following the sibling rx_handler_dl_image function name:
tx_handler_ul_image is
- a transfer -> tx_
- a complete handler -> handler
- it does upload data to the usb host -> ul_image
I know upgrade_tool/rkdeveloptool do have ul command but this is a
totally different context
>
>
> > +{
> > +#define RBUFFER_SIZE 4096
> You can use the same size for TX and RX buffer.
>
> BTW: I don't like the design of the return value here, there should
> always have return
> value instead of void, many error cat may happen during the TX.
This is a request complete handler, so function arguments and return
value cannot be
different than the proposed.
Errors have to be reported to the host with a CSW_FAIL message and managed
here on target switching back to the default complete handler.
Best Regards,
Alberto Panizzo
--
Amarula Solutions SRL Via le Canevare 30 31100 Treviso Italy
Amarula Solutions BV Cruquiuskade 47 Amsterdam 1018 AM The Netherlands
Phone. +31(0)851119171 Fax. +31(0)204106211 www.amarulasolutions.com
>
> Thanks,
> - Kever
> > + ALLOC_CACHE_ALIGN_BUFFER(char, rbuffer, RBUFFER_SIZE);
> > + struct f_rockusb *f_rkusb = get_rkusb();
> > + struct usb_request *in_req = rockusb_func->in_req;
> > + int ret;
> > +
> > + if (!f_rkusb->desc) {
> > + char *type = f_rkusb->dev_type;
> > + int index = f_rkusb->dev_index;
> > +
> > + f_rkusb->desc = blk_get_dev(type, index);
> > + if (!f_rkusb->desc ||
> > + f_rkusb->desc->type == DEV_TYPE_UNKNOWN) {
> > + puts("invalid mmc device\n");
> > + rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
> > + USB_BULK_CS_WRAP_LEN);
> > + return;
> > + }
> > + }
> > +
> > + /* Print error status of previous transfer */
> > + if (req->status)
> > + debug("status: %d ep '%s' trans: %d len %d\n", req->status,
> > + ep->name, req->actual, req->length);
> > +
> > + /* On transfer complete reset in_req and feedback host with CSW_GOOD */
> > + if (f_rkusb->ul_bytes >= f_rkusb->ul_size) {
> > + in_req->length = 0;
> > + in_req->complete = rockusb_complete;
> > +
> > + rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
> > + USB_BULK_CS_WRAP_LEN);
> > + return;
> > + }
> > +
> > + /* Proceed with current chunk */
> > + unsigned int transfer_size = f_rkusb->ul_size - f_rkusb->ul_bytes;
> > +
> > + if (transfer_size > RBUFFER_SIZE)
> > + transfer_size = RBUFFER_SIZE;
> > + /* Read at least one block */
> > + unsigned int blkcount = (transfer_size + 511) / 512;
> > +
> > + debug("ul %x bytes, %x blks, read lba %x, ul_size:%x, ul_bytes:%x, ",
> > + transfer_size, blkcount, f_rkusb->lba,
> > + f_rkusb->ul_size, f_rkusb->ul_bytes);
> > +
> > + int blks = blk_dread(f_rkusb->desc, f_rkusb->lba, blkcount, rbuffer);
> > +
> > + if (blks != blkcount) {
> > + printf("failed reading from device %s: %d\n",
> > + f_rkusb->dev_type, f_rkusb->dev_index);
> > + rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
> > + USB_BULK_CS_WRAP_LEN);
> > + return;
> > + }
> > + f_rkusb->lba += blkcount;
> > + f_rkusb->ul_bytes += transfer_size;
> > +
> > + /* Proceed with USB request */
> > + memcpy(in_req->buf, rbuffer, transfer_size);
> > + in_req->length = transfer_size;
> > + in_req->complete = tx_handler_ul_image;
> > + printf("Uploading 0x%x bytes\n", transfer_size);
> > + usb_ep_dequeue(rockusb_func->in_ep, in_req);
> > + ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0);
> > + if (ret)
> > + printf("Error %d on queue\n", ret);
> > +}
> > +
> > /* usb_request complete call back to handle down load image */
> > static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
> > {
> > @@ -568,6 +642,32 @@ static void cb_get_chip_version(struct usb_ep *ep, struct usb_request *req)
> > CSW_GOOD);
> > }
> >
> > +static void cb_read_lba(struct usb_ep *ep, struct usb_request *req)
> > +{
> > + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> > + sizeof(struct fsg_bulk_cb_wrap));
> > + struct f_rockusb *f_rkusb = get_rkusb();
> > + int sector_count;
> > +
> > + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> > + sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
> > + f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]);
> > + f_rkusb->ul_size = sector_count * 512;
> > + f_rkusb->ul_bytes = 0;
> > + f_rkusb->tag = cbw->tag;
> > + debug("require read %x bytes, %x sectors from lba %x\n",
> > + f_rkusb->ul_size, sector_count, f_rkusb->lba);
> > +
> > + if (f_rkusb->ul_size == 0) {
> > + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
> > + CSW_FAIL, USB_BULK_CS_WRAP_LEN);
> > + return;
> > + }
> > +
> > + /* Start right now sending first chunk */
> > + tx_handler_ul_image(ep, req);
> > +}
> > +
> > static void cb_write_lba(struct usb_ep *ep, struct usb_request *req)
> > {
> > ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> > @@ -678,7 +778,7 @@ static const struct cmd_dispatch_info cmd_dispatch_info[] = {
> > },
> > {
> > .cmd = K_FW_LBA_READ_10,
> > - .cb = cb_not_support,
> > + .cb = cb_read_lba,
> > },
> > {
> > .cmd = K_FW_LBA_WRITE_10,
>
>
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