[U-Boot] [PATCH v2 4/8] usb: rockchip: implement K_FW_LBA_READ_10 command
Lukasz Majewski
lukma at denx.de
Thu Jul 5 22:18:05 UTC 2018
Hi Alberto,
> This patch implement reading blocks form selected device with
> LBA addressing.
>
> Corresponding command on workstation is:
> rkdeveloptool rl <start_blk> <blk_cnt> <file>
>
> While we support reading more than one blocks per K_FW_LBA_READ_10
> request, rkdeveloptool and original rockchip tool do perform
> chunk reads limiting the maximum size per chunk far lower
> than max int values.
>
> Signed-off-by: Alberto Panizzo <alberto at amarulasolutions.com>
> ---
> arch/arm/include/asm/arch-rockchip/f_rockusb.h | 3 +
> doc/README.rockusb | 1 +
> drivers/usb/gadget/f_rockusb.c | 101
> ++++++++++++++++++++++++- 3 files changed, 104 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
> 0b62771..3f2e763 100644 ---
> a/arch/arm/include/asm/arch-rockchip/f_rockusb.h +++
> b/arch/arm/include/asm/arch-rockchip/f_rockusb.h @@ -27,6 +27,7 @@
> */
>
> #define RKUSB_BUF_SIZE EP_BUFFER_SIZE * 2
> +#define RKBLOCK_BUF_SIZE 4096
>
> #define RKUSB_STATUS_IDLE 0
> #define RKUSB_STATUS_CMD 1
> @@ -120,6 +121,8 @@ 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/doc/README.rockusb b/doc/README.rockusb
> index 3a93edc..7f58296 100644
> --- a/doc/README.rockusb
> +++ b/doc/README.rockusb
> @@ -47,6 +47,7 @@ Current set of rkdeveloptool commands supported:
> - rfi: Read Flash Id
> - rd : Reset Device
> - td : Test Device Ready
> +- rl : Read blocks using LBA
> - wl : Write blocks using LBA
>
> To do
> diff --git a/drivers/usb/gadget/f_rockusb.c
> b/drivers/usb/gadget/f_rockusb.c index 0314ff0..4a62e1b 100644
> --- a/drivers/usb/gadget/f_rockusb.c
> +++ b/drivers/usb/gadget/f_rockusb.c
> @@ -328,6 +328,7 @@ 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)
> @@ -421,6 +422,78 @@ 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) +{
> + ALLOC_CACHE_ALIGN_BUFFER(char, rbuffer, RKBLOCK_BUF_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 > RKBLOCK_BUF_SIZE)
> + transfer_size = RKBLOCK_BUF_SIZE;
> + /* Read at least one block */
> + unsigned int blkcount = (transfer_size + 511) / 512;
Could you replace the 512 magic with f_rkusb->desc->blksz ?
> +
> + 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) {
> @@ -565,6 +638,32 @@ static void cb_get_chip_version(struct usb_ep
> *ep, struct usb_request *req) rockusb_tx_write((char *)chip_info,
> sizeof(chip_info)); }
>
> +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;
The same here.
> + 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,
> @@ -675,7 +774,7 @@ 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,
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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