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@amarulasolutions.com --- arch/arm/include/asm/arch-rockchip/f_rockusb.h | 3 + doc/README.rockusb | 1 + drivers/usb/gadget/f_rockusb.c | 104 ++++++++++++++++++++++++- 3 files changed, 107 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..82f421c 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 +422,65 @@ 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; + + /* 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 + f_rkusb->desc->blksz - 1) / + 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 +625,48 @@ 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->tag = cbw->tag; + + 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) { + printf("invalid device "%s", %d\n", type, index); + rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL, + USB_BULK_CS_WRAP_LEN); + return; + } + } + + f_rkusb->lba = get_unaligned_be32(&cbw->CDB[2]); + f_rkusb->ul_size = sector_count * f_rkusb->desc->blksz; + f_rkusb->ul_bytes = 0; + + 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 +777,7 @@ 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,