[U-Boot] [PATCH V3 1/4] usb: rockchip: add the rockusb gadget
Simon Glass
sjg at chromium.org
Sun Apr 30 03:49:27 UTC 2017
Hi Eddie,
On 28 April 2017 at 18:41, Eddie Cai <eddie.cai.linux at gmail.com> wrote:
> this patch implement rockusb protocol on the device side. this is based on USB
> download gadget infrastructure. the rockusb function implements the rd, wl, rid
> commands. it can work with rkdeveloptool.
>
> Signed-off-by: Eddie Cai <eddie.cai.linux at gmail.com>
>
> Changes in v3:
> -split the macro to f_rockusb.h
> -use ALLOC_CACHE_ALIGN_BUFFER to define cache safe struct inside the function.
> -fix checkpatch error
>
> ---
> arch/arm/include/asm/arch-rockchip/f_rockusb.h | 104 ++++
> drivers/usb/gadget/Makefile | 1 +
> drivers/usb/gadget/f_rockusb.c | 724 +++++++++++++++++++++++++
> 3 files changed, 829 insertions(+)
> create mode 100644 arch/arm/include/asm/arch-rockchip/f_rockusb.h
> create mode 100644 drivers/usb/gadget/f_rockusb.c
>
> diff --git a/arch/arm/include/asm/arch-rockchip/f_rockusb.h b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
> new file mode 100644
> index 0000000..10b5446
> --- /dev/null
> +++ b/arch/arm/include/asm/arch-rockchip/f_rockusb.h
> @@ -0,0 +1,104 @@
> +/*
> + * (C) Copyright 2017
> + *
> + * Eddie Cai <eddie.cai.linux at gmail.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#ifndef __F_ROCKUSB_H
> +#define __F_ROCKUSB_H
> +#define ROCKUSB_VERSION "0.1"
> +
> +#define ROCKUSB_INTERFACE_CLASS 0xff
> +#define ROCKUSB_INTERFACE_SUB_CLASS 0x06
> +#define ROCKUSB_INTERFACE_PROTOCOL 0x05
> +
> +#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0 (0x0200)
> +#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1 (0x0040)
> +#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE (0x0040)
> +
> +#define EP_BUFFER_SIZE 4096
> +/*
> + * EP_BUFFER_SIZE must always be an integral multiple of maxpacket size
> + * (64 or 512 or 1024), else we break on certain controllers like DWC3
> + * that expect bulk OUT requests to be divisible by maxpacket size.
> + */
> +
> +#define CONFIG_ROCKUSB_BUF_ADDR CONFIG_SYS_LOAD_ADDR
> +#define CONFIG_ROCKUSB_BUF_SIZE 0x08000000
> +
> +#define RKUSB_STATUS_IDLE 0
> +#define RKUSB_STATUS_CMD 1
> +#define RKUSB_STATUS_RXDATA 2
> +#define RKUSB_STATUS_TXDATA 3
> +#define RKUSB_STATUS_CSW 4
> +#define RKUSB_STATUS_RXDATA_PREPARE 5
> +#define RKUSB_STATUS_TXDATA_PREPARE 6
> +
> +enum {
> + TEST_UNIT_READY = 0,
> + READ_FLASH_ID = 0x01,
> + TEST_BAD_BLOCK = 0x03,
> + READ_SECTOR = 0x04,
> + WRITE_SECTOR = 0x05,
> + ERASE_NORMAL = 0x06,
> + ERASE_FORCE = 0x0B,
> + READ_LBA = 0x14,
> + WRITE_LBA = 0x15,
> + ERASE_SYSTEMDISK = 0x16,
> + READ_SDRAM = 0x17,
> + WRITE_SDRAM = 0x18,
> + EXECUTE_SDRAM = 0x19,
> + READ_FLASH_INFO = 0x1A,
> + READ_CHIP_INFO = 0x1B,
> + SET_RESET_FLAG = 0x1E,
> + WRITE_EFUSE = 0x1F,
> + READ_EFUSE = 0x20,
> + READ_SPI_FLASH = 0x21,
> + WRITE_SPI_FLASH = 0x22,
> + WRITE_NEW_EFUSE = 0x23,
> + READ_NEW_EFUSE = 0x24,
> + DEVICE_RESET = 0xFF
> +} USB_OPERATION_CODE;
Do you mean to declare a variable? Perhaps instead:
enum op_code {
...
};
> +
> +#define K_FW_TEST_UNIT_READY 0x00
Can these be an enum also?
> +#define K_FW_READ_FLASH_ID 0x01
> +#define K_FW_SET_DEVICE_ID 0x02
> +#define K_FW_TEST_BAD_BLOCK 0x03
> +#define K_FW_READ_10 0x04
> +#define K_FW_WRITE_10 0x05
> +#define K_FW_ERASE_10 0x06
> +#define K_FW_WRITE_SPARE 0x07
> +#define K_FW_READ_SPARE 0x08
> +
> +#define K_FW_ERASE_10_FORCE 0x0b
> +#define K_FW_GET_VERSION 0x0c
> +
> +#define K_FW_LBA_READ_10 0x14
> +#define K_FW_LBA_WRITE_10 0x15
> +#define K_FW_ERASE_SYS_DISK 0x16
> +#define K_FW_SDRAM_READ_10 0x17
> +#define K_FW_SDRAM_WRITE_10 0x18
> +#define K_FW_SDRAM_EXECUTE 0x19
> +#define K_FW_READ_FLASH_INFO 0x1A
> +#define K_FW_GET_CHIP_VER 0x1B
> +#define K_FW_LOW_FORMAT 0x1C
> +#define K_FW_SET_RESET_FLAG 0x1E
> +#define K_FW_SPI_READ_10 0x21
> +#define K_FW_SPI_WRITE_10 0x22
> +
> +#define K_FW_SESSION 0X30
> +#define K_FW_RESET 0xff
> +
> +#define CBW_DIRECTION_OUT 0x00
> +#define CBW_DIRECTION_IN 0x80
> +
> +struct cmd_dispatch_info {
> + int cmd;
enum
> + void (*cb)(struct usb_ep *ep, struct usb_request *req);
Function comment
> +};
> +
> +void rockusb_dev_init(char *dev_type, int dev_index);
Function comment
> +#endif /* __F_ROCKUSB_H */
> +
> diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
> index 0fbbb7c..0eb27a3 100644
> --- a/drivers/usb/gadget/Makefile
> +++ b/drivers/usb/gadget/Makefile
> @@ -28,6 +28,7 @@ obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o
> obj-$(CONFIG_USB_FUNCTION_DFU) += f_dfu.o
> obj-$(CONFIG_USB_FUNCTION_MASS_STORAGE) += f_mass_storage.o
> obj-$(CONFIG_USB_FUNCTION_FASTBOOT) += f_fastboot.o
> +obj-$(CONFIG_USB_FUNCTION_ROCKUSB) += f_rockusb.o
> endif
> endif
> ifdef CONFIG_USB_ETHER
> diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c
> new file mode 100644
> index 0000000..0c666c2
> --- /dev/null
> +++ b/drivers/usb/gadget/f_rockusb.c
> @@ -0,0 +1,724 @@
> +/*
> + * (C) Copyright 2017
> + *
> + * Eddie Cai <eddie.cai.linux at gmail.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0+
> + */
> +
> +#include <config.h>
> +#include <common.h>
> +#include <errno.h>
> +#include <malloc.h>
> +#include <memalign.h>
> +#include <linux/usb/ch9.h>
> +#include <linux/usb/gadget.h>
> +#include <linux/usb/composite.h>
> +#include <linux/compiler.h>
> +#include <version.h>
> +#include <g_dnl.h>
> +#include <asm/arch/f_rockusb.h>
> +
> +struct f_rockusb {
> + struct usb_function usb_function;
> + /* IN/OUT EP's and corresponding requests */
> + struct usb_ep *in_ep, *out_ep;
> + struct usb_request *in_req, *out_req;
> +};
> +
> +static inline struct f_rockusb *func_to_rockusb(struct usb_function *f)
> +{
> + return container_of(f, struct f_rockusb, usb_function);
> +}
> +
> +static struct f_rockusb *rockusb_func;
> +
> +static struct usb_endpoint_descriptor fs_ep_in = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_IN,
> + .bmAttributes = USB_ENDPOINT_XFER_BULK,
> + .wMaxPacketSize = cpu_to_le16(64),
> +};
> +
> +static struct usb_endpoint_descriptor fs_ep_out = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_OUT,
> + .bmAttributes = USB_ENDPOINT_XFER_BULK,
> + .wMaxPacketSize = cpu_to_le16(64),
> +};
> +
> +static struct usb_endpoint_descriptor hs_ep_in = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_IN,
> + .bmAttributes = USB_ENDPOINT_XFER_BULK,
> + .wMaxPacketSize = cpu_to_le16(512),
> +};
> +
> +static struct usb_endpoint_descriptor hs_ep_out = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_OUT,
> + .bmAttributes = USB_ENDPOINT_XFER_BULK,
> + .wMaxPacketSize = cpu_to_le16(512),
> +};
> +
> +static struct usb_interface_descriptor interface_desc = {
> + .bLength = USB_DT_INTERFACE_SIZE,
> + .bDescriptorType = USB_DT_INTERFACE,
> + .bInterfaceNumber = 0x00,
> + .bAlternateSetting = 0x00,
> + .bNumEndpoints = 0x02,
> + .bInterfaceClass = ROCKUSB_INTERFACE_CLASS,
> + .bInterfaceSubClass = ROCKUSB_INTERFACE_SUB_CLASS,
> + .bInterfaceProtocol = ROCKUSB_INTERFACE_PROTOCOL,
> +};
> +
> +static struct usb_descriptor_header *rkusb_fs_function[] = {
> + (struct usb_descriptor_header *)&interface_desc,
> + (struct usb_descriptor_header *)&fs_ep_in,
> + (struct usb_descriptor_header *)&fs_ep_out,
> +};
> +
> +static struct usb_descriptor_header *rkusb_hs_function[] = {
> + (struct usb_descriptor_header *)&interface_desc,
> + (struct usb_descriptor_header *)&hs_ep_in,
> + (struct usb_descriptor_header *)&hs_ep_out,
> + NULL,
> +};
> +
> +static struct usb_endpoint_descriptor *
> +rkusb_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
Can you put the function name on the same line as the * ?
> + struct usb_endpoint_descriptor *hs)
> +{
> + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
> + return hs;
> + return fs;
> +}
> +
> +/*
> + * static strings, in UTF-8
> + */
> +static const char rkusb_name[] = "Rockchip Rockusb";
> +
> +static struct usb_string rkusb_string_defs[] = {
> + [0].s = rkusb_name,
> + { } /* end of list */
> +};
> +
> +static struct usb_gadget_strings stringtab_rkusb = {
> + .language = 0x0409, /* en-us */
> + .strings = rkusb_string_defs,
> +};
> +
> +static struct usb_gadget_strings *rkusb_strings[] = {
> + &stringtab_rkusb,
> + NULL,
> +};
Can you put all data declarations together at the top of the file?
> +
> +static void rx_handler_command(struct usb_ep *ep, struct usb_request *req);
> +static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size);
> +
> +static void rockusb_complete(struct usb_ep *ep, struct usb_request *req)
> +{
> + int status = req->status;
> + if (!status)
> + return;
> + debug("status: %d ep '%s' trans: %d\n", status, ep->name, req->actual);
> +}
> +
> +static int rockusb_bind(struct usb_configuration *c, struct usb_function *f)
Function comment
> +{
> + int id;
> + struct usb_gadget *gadget = c->cdev->gadget;
> + struct f_rockusb *f_rkusb = func_to_rockusb(f);
> + const char *s;
> +
> + id = usb_interface_id(c, f);
> + if (id < 0)
> + return id;
> + interface_desc.bInterfaceNumber = id;
> +
> + id = usb_string_id(c->cdev);
> + if (id < 0)
> + return id;
> +
> + rkusb_string_defs[0].id = id;
> + interface_desc.iInterface = id;
> +
> + f_rkusb->in_ep = usb_ep_autoconfig(gadget, &fs_ep_in);
> + if (!f_rkusb->in_ep)
> + return -ENODEV;
> + f_rkusb->in_ep->driver_data = c->cdev;
> +
> + f_rkusb->out_ep = usb_ep_autoconfig(gadget, &fs_ep_out);
> + if (!f_rkusb->out_ep)
> + return -ENODEV;
> + f_rkusb->out_ep->driver_data = c->cdev;
> +
> + f->descriptors = rkusb_fs_function;
> +
> + if (gadget_is_dualspeed(gadget)) {
> + hs_ep_in.bEndpointAddress = fs_ep_in.bEndpointAddress;
> + hs_ep_out.bEndpointAddress = fs_ep_out.bEndpointAddress;
> + f->hs_descriptors = rkusb_hs_function;
> + }
> +
> + s = getenv("serial#");
> + if (s)
> + g_dnl_set_serialnumber((char *)s);
> +
> + return 0;
> +}
> +
> +static void rockusb_unbind(struct usb_configuration *c, struct usb_function *f)
> +{
> + memset(rockusb_func, 0, sizeof(*rockusb_func));
Why do you zero it? Can you add a comment?
> +}
> +
> +static void rockusb_disable(struct usb_function *f)
> +{
> + struct f_rockusb *f_rkusb = func_to_rockusb(f);
> +
> + usb_ep_disable(f_rkusb->out_ep);
> + usb_ep_disable(f_rkusb->in_ep);
> +
> + if (f_rkusb->out_req) {
> + free(f_rkusb->out_req->buf);
> + usb_ep_free_request(f_rkusb->out_ep, f_rkusb->out_req);
> + f_rkusb->out_req = NULL;
> + }
> + if (f_rkusb->in_req) {
> + free(f_rkusb->in_req->buf);
> + usb_ep_free_request(f_rkusb->in_ep, f_rkusb->in_req);
> + f_rkusb->in_req = NULL;
> + }
> +}
> +
> +static struct usb_request *rockusb_start_ep(struct usb_ep *ep)
> +{
> + struct usb_request *req;
> +
> + req = usb_ep_alloc_request(ep, 0);
> + if (!req)
> + return NULL;
> +
> + req->length = EP_BUFFER_SIZE;
> + req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, EP_BUFFER_SIZE);
> + if (!req->buf) {
> + usb_ep_free_request(ep, req);
> + return NULL;
> + }
> +
> + memset(req->buf, 0, req->length);
blank line before return
> + return req;
> +}
> +
> +static int rockusb_set_alt(struct usb_function *f,
> + unsigned interface, unsigned alt)
> +{
> + int ret;
> + struct usb_composite_dev *cdev = f->config->cdev;
> + struct usb_gadget *gadget = cdev->gadget;
> + struct f_rockusb *f_rkusb = func_to_rockusb(f);
> + const struct usb_endpoint_descriptor *d;
> +
> + debug("%s: func: %s intf: %d alt: %d\n",
> + __func__, f->name, interface, alt);
> +
> + d = rkusb_ep_desc(gadget, &fs_ep_out, &hs_ep_out);
> + ret = usb_ep_enable(f_rkusb->out_ep, d);
> + if (ret) {
> + puts("failed to enable out ep\n");
> + return ret;
> + }
> +
> + f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep);
> + if (!f_rkusb->out_req) {
> + puts("failed to alloc out req\n");
printf() instead of puts()
> + ret = -EINVAL;
> + goto err;
> + }
> + f_rkusb->out_req->complete = rx_handler_command;
> +
> + d = rkusb_ep_desc(gadget, &fs_ep_in, &hs_ep_in);
> + ret = usb_ep_enable(f_rkusb->in_ep, d);
> + if (ret) {
> + puts("failed to enable in ep\n");
> + goto err;
> + }
> +
> + f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep);
> + if (!f_rkusb->in_req) {
> + puts("failed alloc req in\n");
> + ret = -EINVAL;
> + goto err;
> + }
> + f_rkusb->in_req->complete = rockusb_complete;
> +
> + ret = usb_ep_queue(f_rkusb->out_ep, f_rkusb->out_req, 0);
> + if (ret)
> + goto err;
> +
> + return 0;
> +err:
> + rockusb_disable(f);
> + return ret;
> +}
> +
> +static int rockusb_add(struct usb_configuration *c)
> +{
> + struct f_rockusb *f_rkusb = rockusb_func;
> + int status;
> +
> + debug("%s: cdev: 0x%p\n", __func__, c->cdev);
> +
> + if (!f_rkusb) {
> + f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb));
> + if (!f_rkusb)
> + return -ENOMEM;
> +
> + rockusb_func = f_rkusb;
> + memset(f_rkusb, 0, sizeof(*f_rkusb));
> + }
> +
> + f_rkusb->usb_function.name = "f_rockusb";
> + f_rkusb->usb_function.bind = rockusb_bind;
> + f_rkusb->usb_function.unbind = rockusb_unbind;
> + f_rkusb->usb_function.set_alt = rockusb_set_alt;
> + f_rkusb->usb_function.disable = rockusb_disable;
> + f_rkusb->usb_function.strings = rkusb_strings;
> +
> + status = usb_add_function(c, &f_rkusb->usb_function);
> + if (status) {
> + free(f_rkusb);
> + rockusb_func = f_rkusb;
> + }
> + return status;
> +}
> +
> +char *rockusb_dev_type = 0;
> +int rockusb_dev_index = 0;
Move to top
I wonder if you should group all your data in a struct?
> +
> +void rockusb_dev_init(char *dev_type, int dev_index)
> +{
> + rockusb_dev_type = dev_type;
> + rockusb_dev_index = dev_index;
> +}
> +
> +DECLARE_GADGET_BIND_CALLBACK(usb_dnl_rockusb, rockusb_add);
> +
> +static int rockusb_tx_write(const char *buffer, unsigned int buffer_size)
> +{
> + struct usb_request *in_req = rockusb_func->in_req;
> + int ret;
> +
> + memcpy(in_req->buf, buffer, buffer_size);
> + in_req->length = buffer_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);
> + return 0;
> +}
> +
> +static int rockusb_tx_write_str(const char *buffer)
> +{
> + return rockusb_tx_write(buffer, strlen(buffer));
> +}
> +
> +/* Bulk-only data structures */
> +
> +/* Command Block Wrapper */
> +struct fsg_bulk_cb_wrap {
> + __le32 signature; /* Contains 'USBC' */
> + u32 tag; /* Unique per command id */
> + __le32 data_transfer_length; /* Size of the data */
> + u8 flags; /* Direction in bit 7 */
> + u8 lun; /* lun (normally 0) */
> + u8 length; /* Of the CDB, <= MAX_COMMAND_SIZE */
> + u8 CDB[16]; /* Command Data Block */
> +};
> +
> +#define USB_BULK_CB_WRAP_LEN 31
> +#define USB_BULK_CB_SIG 0x43425355 /* Spells out USBC */
> +#define USB_BULK_IN_FLAG 0x80
> +
> +/* Command status Wrapper */
> +struct bulk_cs_wrap {
> + __le32 signature; /* Should = 'USBS' */
> + u32 tag; /* Same as original command */
> + __le32 residue; /* Amount not transferred */
> + u8 status; /* See below */
> +};
> +
> +#define USB_BULK_CS_WRAP_LEN 13
> +#define USB_BULK_CS_SIG 0x53425355 /* Spells out 'USBS' */
> +#define USB_STATUS_PASS 0
> +#define USB_STATUS_FAIL 1
> +#define USB_STATUS_PHASE_ERROR 2
> +
> +#define CSW_GOOD 0x00
> +#define CSW_FAIL 0x01
> +
> +#ifdef DEBUG
> +static void printcbw(char *buf)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
Does this need to be aligned if you are just using it for debug?
> +
> + memcpy((char *)cbw, buf, USB_BULK_CB_WRAP_LEN);
> +
> + debug("cbw: signature:%x\n", cbw->signature);
> + debug("cbw: tag=%x\n", cbw->tag);
> + debug("cbw: data_transfer_length=%d\n", cbw->data_transfer_length);
> + debug("cbw: flags=%x\n", cbw->flags);
> + debug("cbw: lun=%d\n", cbw->lun);
> + debug("cbw: length=%d\n", cbw->length);
> + debug("cbw: ucOperCode=%x\n", cbw->CDB[0]);
> + debug("cbw: ucReserved=%x\n", cbw->CDB[1]);
> + debug("cbw: dwAddress:%x %x %x %x\n", cbw->CDB[5], cbw->CDB[4],
> + cbw->CDB[3], cbw->CDB[2]);
> + debug("cbw: ucReserved2=%x\n", cbw->CDB[6]);
> + debug("cbw: uslength:%x %x\n", cbw->CDB[8], cbw->CDB[7]);
> +}
> +
> +static void printcsw(char *buf)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
> + sizeof(struct bulk_cs_wrap));
> + memcpy((char *)csw, buf, USB_BULK_CS_WRAP_LEN);
> + debug("csw: signature:%x\n", csw->signature);
> + debug("csw: tag:%x\n", csw->tag);
> + debug("csw: residue:%x\n", csw->residue);
> + debug("csw: status:%x\n", csw->status);
> +}
> +#endif
> +
> +static int rockusb_tx_write_csw(u32 tag, int residue, u8 status, int size)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct bulk_cs_wrap, csw,
> + sizeof(struct bulk_cs_wrap));
> + csw->signature = cpu_to_le32(USB_BULK_CS_SIG);
> + csw->tag = tag;
> + csw->residue = cpu_to_be32(residue);
> + csw->status = status;
> +#ifdef DEBUG
> + printcsw((char *)&csw);
> +#endif
> + return rockusb_tx_write((char *)csw, size);
> +}
> +
> +static unsigned int download_tag;
> +static unsigned int download_lba;
> +static unsigned int download_size;
> +static unsigned int download_bytes;
> +struct blk_desc *download_desc = 0;
> +
> +static unsigned int rx_bytes_expected(struct usb_ep *ep)
> +{
> + int rx_remain = download_size - download_bytes;
> + unsigned int rem;
> + unsigned int maxpacket = ep->maxpacket;
> +
> + if (rx_remain <= 0)
> + return 0;
> + else if (rx_remain > EP_BUFFER_SIZE)
> + return EP_BUFFER_SIZE;
> +
> + rem = rx_remain % maxpacket;
> + if (rem > 0)
> + rx_remain = rx_remain + (maxpacket - rem);
> +
> + return rx_remain;
> +}
> +
> +static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
Function comments
> +{
> + unsigned int transfer_size = download_size - download_bytes;
> + const unsigned char *buffer = req->buf;
> + unsigned int buffer_size = req->actual;
> +
> + if (!download_desc) {
> + printf("rx_handler_dl_image blk_get_dev\n");
> + download_desc = blk_get_dev(rockusb_dev_type,
> + rockusb_dev_index);
> + if (!download_desc ||
> + download_desc->type == DEV_TYPE_UNKNOWN) {
> + error("invalid mmc device\n");
> + rockusb_tx_write_csw(download_tag, 0, CSW_FAIL,
> + USB_BULK_CS_WRAP_LEN);
> + return;
> + }
> + }
> +
> + if (req->status != 0) {
> + printf("Bad status: %d\n", req->status);
> + rockusb_tx_write_csw(download_tag, 0,
> + CSW_FAIL, USB_BULK_CS_WRAP_LEN);
> + return;
> + }
> +
> + if (buffer_size < transfer_size)
> + transfer_size = buffer_size;
> +
> + memcpy((void *)CONFIG_ROCKUSB_BUF_ADDR + download_bytes,
> + buffer, transfer_size);
> + download_bytes += transfer_size;
> +
> + /* Check if transfer is done */
> + if (download_bytes >= download_size) {
> + int blks = 0, blkcnt = download_size/512;
> + printf("download %d bytes finished, start writing to lba %x\n",
> + download_bytes, download_lba);
> + blks = blk_dwrite(download_desc, download_lba, blkcnt,
> + (char *)CONFIG_ROCKUSB_BUF_ADDR);
> + if (blks != blkcnt) {
> + error("failed writing to device %s: %d\n",
> + rockusb_dev_type, rockusb_dev_index);
> + rockusb_tx_write_csw(download_tag, 0,
> + CSW_FAIL, USB_BULK_CS_WRAP_LEN);
> + return;
> + }
> +
> + req->complete = rx_handler_command;
> + req->length = EP_BUFFER_SIZE;
> + download_size = 0;
> + printf("done\n");
> + rockusb_tx_write_csw(download_tag, 0, CSW_GOOD,
> + USB_BULK_CS_WRAP_LEN);
> + } else {
> + req->length = rx_bytes_expected(ep);
> + }
> +
> + req->actual = 0;
> + usb_ep_queue(ep, req, 0);
> +}
> +
> +static void cb_test_unit_ready(struct usb_ep *ep, struct usb_request *req)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
> +
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> +
> + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
> + CSW_GOOD, USB_BULK_CS_WRAP_LEN);
> +}
> +
> +static void cb_read_storage_id(struct usb_ep *ep, struct usb_request *req)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
> + char emmc_id[] = "EMMC ";
> +
> + printf("cb_read_storage_id\n");
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> + rockusb_tx_write_str(emmc_id);
> + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
> + USB_BULK_CS_WRAP_LEN);
> +}
> +
> +static void cb_write_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));
> + int sector_count;
> +
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> + sector_count = (int)get_unaligned_be16(&cbw->CDB[7]);
> + download_lba = get_unaligned_be32(&cbw->CDB[2]);
> + download_size = sector_count * 512;
> + download_bytes = 0;
> + download_tag = cbw->tag;
> + if ((0 == download_size) || (download_size > CONFIG_ROCKUSB_BUF_SIZE)) {
> + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length,
> + CSW_FAIL, USB_BULK_CS_WRAP_LEN);
> + } else {
> + req->complete = rx_handler_dl_image;
> + req->length = rx_bytes_expected(ep);
> + }
> +}
> +
> +static int reboot_flag;
> +
> +int __weak rkusb_set_reboot_flag(int flag)
> +{
> + printf("rkusb_set_reboot_flag: %d\n", reboot_flag);
> + return -ENOSYS;
> +}
> +
> +static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
> +{
> + rkusb_set_reboot_flag(reboot_flag);
> + do_reset(NULL, 0, 0, NULL);
> +}
> +
> +static void cb_reboot(struct usb_ep *ep, struct usb_request *req)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
> + reboot_flag = 0;
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> + reboot_flag = cbw->CDB[1];
> + rockusb_func->in_req->complete = compl_do_reset;
> + rockusb_tx_write_csw(cbw->tag, cbw->data_transfer_length, CSW_GOOD,
> + USB_BULK_CS_WRAP_LEN);
> +}
> +
> +static void cb_not_support(struct usb_ep *ep, struct usb_request *req)
> +{
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
> +
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> + printf("Rockusb command %x not support yet\n", cbw->CDB[0]);
> + rockusb_tx_write_csw(cbw->tag, 0, CSW_FAIL, USB_BULK_CS_WRAP_LEN);
> +}
> +
> +static const struct cmd_dispatch_info cmd_dispatch_info[] = {
> + {
> + .cmd = K_FW_TEST_UNIT_READY,
> + .cb = cb_test_unit_ready,
> + },
> + {
> + .cmd = K_FW_READ_FLASH_ID,
> + .cb = cb_read_storage_id,
> + },
> + {
> + .cmd = K_FW_SET_DEVICE_ID,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_TEST_BAD_BLOCK,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_READ_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_WRITE_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_ERASE_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_WRITE_SPARE,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_READ_SPARE,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_ERASE_10_FORCE,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_GET_VERSION,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_LBA_READ_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_LBA_WRITE_10,
> + .cb = cb_write_lba,
> + },
> + {
> + .cmd = K_FW_ERASE_SYS_DISK,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SDRAM_READ_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SDRAM_WRITE_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SDRAM_EXECUTE,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_READ_FLASH_INFO,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_GET_CHIP_VER,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_LOW_FORMAT,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SET_RESET_FLAG,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SPI_READ_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SPI_WRITE_10,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_SESSION,
> + .cb = cb_not_support,
> + },
> + {
> + .cmd = K_FW_RESET,
> + .cb = cb_reboot,
> + },
> +};
> +
> +static void rx_handler_command(struct usb_ep *ep, struct usb_request *req)
> +{
> + void (*func_cb)(struct usb_ep *ep, struct usb_request *req) = NULL;
> + ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
> + sizeof(struct fsg_bulk_cb_wrap));
> + char *cmdbuf = req->buf;
> + int i;
> +
> + if (req->status || req->length == 0)
> + return;
> +
> + memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
> +#ifdef DEBUG
> + printcbw(req->buf);
> +#endif
> +
> + for (i = 0; i < ARRAY_SIZE(cmd_dispatch_info); i++) {
> + if (cmd_dispatch_info[i].cmd == cbw->CDB[0]) {
> + func_cb = cmd_dispatch_info[i].cb;
> + break;
> + }
> + }
> +
> + if (!func_cb) {
> + error("unknown command: %s", (char *)req->buf);
> + rockusb_tx_write_str("FAILunknown command");
> + } else {
> + if (req->actual < req->length) {
> + u8 *buf = (u8 *)req->buf;
> + buf[req->actual] = 0;
> + func_cb(ep, req);
> + } else {
> + error("buffer overflow");
> + rockusb_tx_write_str("FAILbuffer overflow");
> + }
> + }
> +
> + *cmdbuf = '\0';
> + req->actual = 0;
> + usb_ep_queue(ep, req, 0);
> +}
> --
> 1.9.1
>
Regards,
Simon
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