u-boot/drivers/usb/gadget/f_rockusb.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2017
*
* Eddie Cai <eddie.cai.linux@gmail.com>
*/
#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>
static inline struct f_rockusb *func_to_rockusb(struct usb_function *f)
{
return container_of(f, struct f_rockusb, usb_function);
}
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 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,
};
static struct f_rockusb *rockusb_func;
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);
struct f_rockusb *get_rkusb(void)
{
struct f_rockusb *f_rkusb = rockusb_func;
if (!f_rkusb) {
f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb));
if (!f_rkusb)
return 0;
rockusb_func = f_rkusb;
memset(f_rkusb, 0, sizeof(*f_rkusb));
}
if (!f_rkusb->buf_head) {
f_rkusb->buf_head = memalign(CONFIG_SYS_CACHELINE_SIZE,
RKUSB_BUF_SIZE);
if (!f_rkusb->buf_head)
return 0;
f_rkusb->buf = f_rkusb->buf_head;
memset(f_rkusb->buf_head, 0, RKUSB_BUF_SIZE);
}
return f_rkusb;
}
static struct usb_endpoint_descriptor *rkusb_ep_desc(
struct usb_gadget *g,
struct usb_endpoint_descriptor *fs,
struct usb_endpoint_descriptor *hs)
{
if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
return hs;
return fs;
}
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);
}
/* config the rockusb device*/
static int rockusb_bind(struct usb_configuration *c, struct usb_function *f)
{
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 = env_get("serial#");
if (s)
g_dnl_set_serialnumber((char *)s);
return 0;
}
static void rockusb_unbind(struct usb_configuration *c, struct usb_function *f)
{
/* clear the configuration*/
memset(rockusb_func, 0, sizeof(*rockusb_func));
}
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;
}
if (f_rkusb->buf_head) {
free(f_rkusb->buf_head);
f_rkusb->buf_head = NULL;
f_rkusb->buf = 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);
return req;
}
static int rockusb_set_alt(struct usb_function *f, unsigned int interface,
unsigned int 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) {
printf("failed to enable out ep\n");
return ret;
}
f_rkusb->out_req = rockusb_start_ep(f_rkusb->out_ep);
if (!f_rkusb->out_req) {
printf("failed to alloc out req\n");
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) {
printf("failed to enable in ep\n");
goto err;
}
f_rkusb->in_req = rockusb_start_ep(f_rkusb->in_ep);
if (!f_rkusb->in_req) {
printf("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 = get_rkusb();
int status;
debug("%s: cdev: 0x%p\n", __func__, c->cdev);
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;
}
void rockusb_dev_init(char *dev_type, int dev_index)
{
struct f_rockusb *f_rkusb = get_rkusb();
f_rkusb->dev_type = dev_type;
f_rkusb->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));
}
#ifdef DEBUG
static void printcbw(char *buf)
{
ALLOC_CACHE_ALIGN_BUFFER(struct fsg_bulk_cb_wrap, cbw,
sizeof(struct fsg_bulk_cb_wrap));
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 rx_bytes_expected(struct usb_ep *ep)
{
struct f_rockusb *f_rkusb = get_rkusb();
int rx_remain = f_rkusb->dl_size - f_rkusb->dl_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;
}
/* usb_request complete call back to handle down load image */
static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req)
{
struct f_rockusb *f_rkusb = get_rkusb();
unsigned int transfer_size = 0;
const unsigned char *buffer = req->buf;
unsigned int buffer_size = req->actual;
transfer_size = f_rkusb->dl_size - f_rkusb->dl_bytes;
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;
}
}
if (req->status != 0) {
printf("Bad status: %d\n", req->status);
rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_FAIL,
USB_BULK_CS_WRAP_LEN);
return;
}
if (buffer_size < transfer_size)
transfer_size = buffer_size;
memcpy((void *)f_rkusb->buf, buffer, transfer_size);
f_rkusb->dl_bytes += transfer_size;
int blks = 0, blkcnt = transfer_size / 512;
debug("dl %x bytes, %x blks, write lba %x, dl_size:%x, dl_bytes:%x, ",
transfer_size, blkcnt, f_rkusb->lba, f_rkusb->dl_size,
f_rkusb->dl_bytes);
blks = blk_dwrite(f_rkusb->desc, f_rkusb->lba, blkcnt, f_rkusb->buf);
if (blks != blkcnt) {
printf("failed writing to 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 += blkcnt;
/* Check if transfer is done */
if (f_rkusb->dl_bytes >= f_rkusb->dl_size) {
req->complete = rx_handler_command;
req->length = EP_BUFFER_SIZE;
f_rkusb->buf = f_rkusb->buf_head;
printf("transfer 0x%x bytes done\n", f_rkusb->dl_size);
f_rkusb->dl_size = 0;
rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD,
USB_BULK_CS_WRAP_LEN);
} else {
req->length = rx_bytes_expected(ep);
if (f_rkusb->buf == f_rkusb->buf_head)
f_rkusb->buf = f_rkusb->buf_head + EP_BUFFER_SIZE;
else
f_rkusb->buf = f_rkusb->buf_head;
debug("remain %x bytes, %x sectors\n", req->length,
req->length / 512);
}
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("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));
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->dl_size = sector_count * 512;
f_rkusb->dl_bytes = 0;
f_rkusb->tag = cbw->tag;
debug("require write %x bytes, %x sectors to lba %x\n",
f_rkusb->dl_size, sector_count, f_rkusb->lba);
if (f_rkusb->dl_size == 0) {
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);
}
}
void __weak rkusb_set_reboot_flag(int flag)
{
struct f_rockusb *f_rkusb = get_rkusb();
printf("rockkusb set reboot flag: %d\n", f_rkusb->reboot_flag);
}
static void compl_do_reset(struct usb_ep *ep, struct usb_request *req)
{
struct f_rockusb *f_rkusb = get_rkusb();
rkusb_set_reboot_flag(f_rkusb->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));
struct f_rockusb *f_rkusb = get_rkusb();
memcpy((char *)cbw, req->buf, USB_BULK_CB_WRAP_LEN);
f_rkusb->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) {
printf("unknown command: %s\n", (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 {
puts("buffer overflow\n");
rockusb_tx_write_str("FAILbuffer overflow");
}
}
*cmdbuf = '\0';
req->actual = 0;
usb_ep_queue(ep, req, 0);
}