[U-Boot] [PATCH 5/7] usb: rockchip: implement K_FW_LBA_ERASE_10 command

[Alberto Panizzo]

This command is part of the write LBA sector sequence performed by
rkdeveloptool

Signed-off-by: Alberto Panizzo <albe...@amarulasolutions.com>
---
 arch/arm/include/asm/arch-rockchip/f_rockusb.h |  1 +
 drivers/usb/gadget/f_rockusb.c                 | 46 ++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/arch/arm/include/asm/arch-rockchip/f_rockusb.h 
b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
index f04d401..77c3a87 100644
--- a/arch/arm/include/asm/arch-rockchip/f_rockusb.h
+++ b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
@@ -62,6 +62,7 @@ K_FW_LOW_FORMAT = 0x1C,
 K_FW_SET_RESET_FLAG = 0x1E,
 K_FW_SPI_READ_10 = 0x21,
 K_FW_SPI_WRITE_10 = 0x22,
+K_FW_LBA_ERASE_10 = 0x25,
 
 K_FW_SESSION = 0X30,
 K_FW_RESET = 0xff,
diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c
index dbf31cb..230fbec 100644
--- a/drivers/usb/gadget/f_rockusb.c
+++ b/drivers/usb/gadget/f_rockusb.c
@@ -693,6 +693,48 @@ static void cb_write_lba(struct usb_ep *ep, struct 
usb_request *req)
        }
 }
 
+static void cb_erase_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, lba, blks;
+
+       memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
+       sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
+       lba = get_unaligned_be32(&cbw->CDB[2]);
+       f_rkusb->tag = cbw->tag;
+       debug("require erase %x sectors from lba %x\n",
+             sector_count, lba);
+
+       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,
+                               cbw->data_transfer_length, CSW_FAIL,
+                               USB_BULK_CS_WRAP_LEN);
+                       return;
+               }
+       }
+       blks = blk_derase(f_rkusb->desc, lba, sector_count);
+       if (blks != sector_count) {
+               printf("failed erasing device %s: %d\n", f_rkusb->dev_type,
+                      f_rkusb->dev_index);
+               rockusb_tx_write_csw(f_rkusb->tag,
+                               cbw->data_transfer_length, CSW_FAIL,
+                               USB_BULK_CS_WRAP_LEN);
+               return;
+       }
+
+       rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
+                            USB_BULK_CS_WRAP_LEN);
+}
+
 void __weak rkusb_set_reboot_flag(int flag)
 {
        struct f_rockusb *f_rkusb = get_rkusb();
@@ -825,6 +867,10 @@ static const struct cmd_dispatch_info cmd_dispatch_info[] 
= {
                .cb = cb_not_support,
        },
        {
+               .cmd = K_FW_LBA_ERASE_10,
+               .cb = cb_erase_lba,
+       },
+       {
                .cmd = K_FW_SESSION,
                .cb = cb_not_support,
        },
-- 
2.7.4

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