U-Boot. Исходные тексты команд: usb.c // SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland
*
* Adapted for U-Boot driver model
* (C) Copyright 2015 Google, Inc
*
* Most of this source has been derived from the Linux USB
* project.
*/
#include <common.h>
#include <blk.h>
#include <bootstage.h>
#include <command.h>
#include <console.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <memalign.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
#include <part.h>
#include <usb.h>
#ifdef CONFIG_USB_STORAGE
static int usb_stor_curr_dev = -1; /* current device */
#endif
#if defined(CONFIG_USB_HOST_ETHER) && !defined(CONFIG_DM_ETH)
static int __maybe_unused usb_ether_curr_dev = -1; /* current ethernet device */
#endif
/* some display routines (info command) */
static char *usb_get_class_desc(unsigned char dclass)
{
switch (dclass) {
case USB_CLASS_PER_INTERFACE:
return "See Interface";
case USB_CLASS_AUDIO:
return "Audio";
case USB_CLASS_COMM:
return "Communication";
case USB_CLASS_HID:
return "Human Interface";
case USB_CLASS_PRINTER:
return "Printer";
case USB_CLASS_MASS_STORAGE:
return "Mass Storage";
case USB_CLASS_HUB:
return "Hub";
case USB_CLASS_DATA:
return "CDC Data";
case USB_CLASS_VENDOR_SPEC:
return "Vendor specific";
default:
return "";
}
}
static void usb_display_class_sub(unsigned char dclass, unsigned char subclass,
unsigned char proto)
{
switch (dclass) {
case USB_CLASS_PER_INTERFACE:
printf("See Interface");
break;
case USB_CLASS_HID:
printf("Human Interface, Subclass: ");
switch (subclass) {
case USB_SUB_HID_NONE:
printf("None");
break;
case USB_SUB_HID_BOOT:
printf("Boot ");
switch (proto) {
case USB_PROT_HID_NONE:
printf("None");
break;
case USB_PROT_HID_KEYBOARD:
printf("Keyboard");
break;
case USB_PROT_HID_MOUSE:
printf("Mouse");
break;
default:
printf("reserved");
break;
}
break;
default:
printf("reserved");
break;
}
break;
case USB_CLASS_MASS_STORAGE:
printf("Mass Storage, ");
switch (subclass) {
case US_SC_RBC:
printf("RBC ");
break;
case US_SC_8020:
printf("SFF-8020i (ATAPI)");
break;
case US_SC_QIC:
printf("QIC-157 (Tape)");
break;
case US_SC_UFI:
printf("UFI");
break;
case US_SC_8070:
printf("SFF-8070");
break;
case US_SC_SCSI:
printf("Transp. SCSI");
break;
default:
printf("reserved");
break;
}
printf(", ");
switch (proto) {
case US_PR_CB:
printf("Command/Bulk");
break;
case US_PR_CBI:
printf("Command/Bulk/Int");
break;
case US_PR_BULK:
printf("Bulk only");
break;
default:
printf("reserved");
break;
}
break;
default:
printf("%s", usb_get_class_desc(dclass));
break;
}
}
static void usb_display_string(struct usb_device *dev, int index)
{
ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
if (index != 0) {
if (usb_string(dev, index, &buffer[0], 256) > 0)
printf("String: \"%s\"", buffer);
}
}
static void usb_display_desc(struct usb_device *dev)
{
uint packet_size = dev->descriptor.bMaxPacketSize0;
if (dev->descriptor.bDescriptorType == USB_DT_DEVICE) {
printf("%d: %s, USB Revision %x.%x\n", dev->devnum,
usb_get_class_desc(dev->config.if_desc[0].desc.bInterfaceClass),
(dev->descriptor.bcdUSB>>8) & 0xff,
dev->descriptor.bcdUSB & 0xff);
if (strlen(dev->mf) || strlen(dev->prod) ||
strlen(dev->serial))
printf(" - %s %s %s\n", dev->mf, dev->prod,
dev->serial);
if (dev->descriptor.bDeviceClass) {
printf(" - Class: ");
usb_display_class_sub(dev->descriptor.bDeviceClass,
dev->descriptor.bDeviceSubClass,
dev->descriptor.bDeviceProtocol);
printf("\n");
} else {
printf(" - Class: (from Interface) %s\n",
usb_get_class_desc(
dev->config.if_desc[0].desc.bInterfaceClass));
}
if (dev->descriptor.bcdUSB >= cpu_to_le16(0x0300))
packet_size = 1 << packet_size;
printf(" - PacketSize: %d Configurations: %d\n",
packet_size, dev->descriptor.bNumConfigurations);
printf(" - Vendor: 0x%04x Product 0x%04x Version %d.%d\n",
dev->descriptor.idVendor, dev->descriptor.idProduct,
(dev->descriptor.bcdDevice>>8) & 0xff,
dev->descriptor.bcdDevice & 0xff);
}
}
static void usb_display_conf_desc(struct usb_config_descriptor *config,
struct usb_device *dev)
{
printf(" Configuration: %d\n", config->bConfigurationValue);
printf(" - Interfaces: %d %s%s%dmA\n", config->bNumInterfaces,
(config->bmAttributes & 0x40) ? "Self Powered " : "Bus Powered ",
(config->bmAttributes & 0x20) ? "Remote Wakeup " : "",
config->bMaxPower*2);
if (config->iConfiguration) {
printf(" - ");
usb_display_string(dev, config->iConfiguration);
printf("\n");
}
}
static void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,
struct usb_device *dev)
{
printf(" Interface: %d\n", ifdesc->bInterfaceNumber);
printf(" - Alternate Setting %d, Endpoints: %d\n",
ifdesc->bAlternateSetting, ifdesc->bNumEndpoints);
printf(" - Class ");
usb_display_class_sub(ifdesc->bInterfaceClass,
ifdesc->bInterfaceSubClass, ifdesc->bInterfaceProtocol);
printf("\n");
if (ifdesc->iInterface) {
printf(" - ");
usb_display_string(dev, ifdesc->iInterface);
printf("\n");
}
}
static void usb_display_ep_desc(struct usb_endpoint_descriptor *epdesc)
{
printf(" - Endpoint %d %s ", epdesc->bEndpointAddress & 0xf,
(epdesc->bEndpointAddress & 0x80) ? "In" : "Out");
switch ((epdesc->bmAttributes & 0x03)) {
case 0:
printf("Control");
break;
case 1:
printf("Isochronous");
break;
case 2:
printf("Bulk");
break;
case 3:
printf("Interrupt");
break;
}
printf(" MaxPacket %d", get_unaligned(&epdesc->wMaxPacketSize));
if ((epdesc->bmAttributes & 0x03) == 0x3)
printf(" Interval %dms", epdesc->bInterval);
printf("\n");
}
/* main routine to diasplay the configs, interfaces and endpoints */
static void usb_display_config(struct usb_device *dev)
{
struct usb_config *config;
struct usb_interface *ifdesc;
struct usb_endpoint_descriptor *epdesc;
int i, ii;
config = &dev->config;
usb_display_conf_desc(&config->desc, dev);
for (i = 0; i < config->no_of_if; i++) {
ifdesc = &config->if_desc[i];
usb_display_if_desc(&ifdesc->desc, dev);
for (ii = 0; ii < ifdesc->no_of_ep; ii++) {
epdesc = &ifdesc->ep_desc[ii];
usb_display_ep_desc(epdesc);
}
}
printf("\n");
}
/*
* With driver model this isn't right since we can have multiple controllers
* and the device numbering starts at 1 on each bus.
* TODO(sjg@chromium.org): Add a way to specify the controller/bus.
*/
static struct usb_device *usb_find_device(int devnum)
{
#ifdef CONFIG_DM_USB
struct usb_device *udev;
struct udevice *hub;
struct uclass *uc;
int ret;
/* Device addresses start at 1 */
devnum++;
ret = uclass_get(UCLASS_USB_HUB, &uc);
if (ret)
return NULL;
uclass_foreach_dev(hub, uc) {
struct udevice *dev;
if (!device_active(hub))
continue;
udev = dev_get_parent_priv(hub);
if (udev->devnum == devnum)
return udev;
for (device_find_first_child(hub, &dev);
dev;
device_find_next_child(&dev)) {
if (!device_active(hub))
continue;
udev = dev_get_parent_priv(dev);
if (udev->devnum == devnum)
return udev;
}
}
#else
struct usb_device *udev;
int d;
for (d = 0; d < USB_MAX_DEVICE; d++) {
udev = usb_get_dev_index(d);
if (udev == NULL)
return NULL;
if (udev->devnum == devnum)
return udev;
}
#endif
return NULL;
}
static inline const char *portspeed(int speed)
{
switch (speed) {
case USB_SPEED_SUPER:
return "5 Gb/s";
case USB_SPEED_HIGH:
return "480 Mb/s";
case USB_SPEED_LOW:
return "1.5 Mb/s";
default:
return "12 Mb/s";
}
}
/* shows the device tree recursively */
static void usb_show_tree_graph(struct usb_device *dev, char *pre)
{
int index;
int has_child, last_child;
index = strlen(pre);
printf(" %s", pre);
#ifdef CONFIG_DM_USB
has_child = device_has_active_children(dev->dev);
if (device_get_uclass_id(dev->dev) == UCLASS_MASS_STORAGE) {
struct udevice *child;
for (device_find_first_child(dev->dev, &child);
child;
device_find_next_child(&child)) {
if (device_get_uclass_id(child) == UCLASS_BLK)
has_child = 0;
}
}
#else
/* check if the device has connected children */
int i;
has_child = 0;
for (i = 0; i < dev->maxchild; i++) {
if (dev->children[i] != NULL)
has_child = 1;
}
#endif
/* check if we are the last one */
#ifdef CONFIG_DM_USB
/* Not the root of the usb tree? */
if (device_get_uclass_id(dev->dev->parent) != UCLASS_USB) {
last_child = device_is_last_sibling(dev->dev);
#else
if (dev->parent != NULL) { /* not root? */
last_child = 1;
for (i = 0; i < dev->parent->maxchild; i++) {
/* search for children */
if (dev->parent->children[i] == dev) {
/* found our pointer, see if we have a
* little sister
*/
while (i++ < dev->parent->maxchild) {
if (dev->parent->children[i] != NULL) {
/* found a sister */
last_child = 0;
break;
} /* if */
} /* while */
} /* device found */
} /* for all children of the parent */
#endif
printf("\b+-");
/* correct last child */
if (last_child && index)
pre[index-1] = ' ';
} /* if not root hub */
else
printf(" ");
printf("%d ", dev->devnum);
pre[index++] = ' ';
pre[index++] = has_child ? '|' : ' ';
pre[index] = 0;
printf(" %s (%s, %dmA)\n", usb_get_class_desc(
dev->config.if_desc[0].desc.bInterfaceClass),
portspeed(dev->speed),
dev->config.desc.bMaxPower * 2);
if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
printf(" %s %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
printf(" %s\n", pre);
#ifdef CONFIG_DM_USB
struct udevice *child;
for (device_find_first_child(dev->dev, &child);
child;
device_find_next_child(&child)) {
struct usb_device *udev;
if (!device_active(child))
continue;
udev = dev_get_parent_priv(child);
/*
* Ignore emulators and block child devices, we only want
* real devices
*/
if (udev &&
(device_get_uclass_id(child) != UCLASS_BOOTDEV) &&
(device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
(device_get_uclass_id(child) != UCLASS_BLK)) {
usb_show_tree_graph(udev, pre);
pre[index] = 0;
}
}
#else
if (dev->maxchild > 0) {
for (i = 0; i < dev->maxchild; i++) {
if (dev->children[i] != NULL) {
usb_show_tree_graph(dev->children[i], pre);
pre[index] = 0;
}
}
}
#endif
}
/* main routine for the tree command */
static void usb_show_subtree(struct usb_device *dev)
{
char preamble[32];
memset(preamble, '\0', sizeof(preamble));
usb_show_tree_graph(dev, &preamble[0]);
}
#ifdef CONFIG_DM_USB
typedef void (*usb_dev_func_t)(struct usb_device *udev);
static void usb_for_each_root_dev(usb_dev_func_t func)
{
struct udevice *bus;
for (uclass_find_first_device(UCLASS_USB, &bus);
bus;
uclass_find_next_device(&bus)) {
struct usb_device *udev;
struct udevice *dev;
if (!device_active(bus))
continue;
device_find_first_child(bus, &dev);
if (dev && device_active(dev)) {
udev = dev_get_parent_priv(dev);
func(udev);
}
}
}
#endif
void usb_show_tree(void)
{
#ifdef CONFIG_DM_USB
usb_for_each_root_dev(usb_show_subtree);
#else
struct usb_device *udev;
int i;
for (i = 0; i < USB_MAX_DEVICE; i++) {
udev = usb_get_dev_index(i);
if (udev == NULL)
break;
if (udev->parent == NULL)
usb_show_subtree(udev);
}
#endif
}
static int usb_test(struct usb_device *dev, int port, char* arg)
{
int mode;
if (port > dev->maxchild) {
printf("Device is no hub or does not have %d ports.\n", port);
return 1;
}
switch (arg[0]) {
case 'J':
case 'j':
printf("Setting Test_J mode");
mode = USB_TEST_MODE_J;
break;
case 'K':
case 'k':
printf("Setting Test_K mode");
mode = USB_TEST_MODE_K;
break;
case 'S':
case 's':
printf("Setting Test_SE0_NAK mode");
mode = USB_TEST_MODE_SE0_NAK;
break;
case 'P':
case 'p':
printf("Setting Test_Packet mode");
mode = USB_TEST_MODE_PACKET;
break;
case 'F':
case 'f':
printf("Setting Test_Force_Enable mode");
mode = USB_TEST_MODE_FORCE_ENABLE;
break;
default:
printf("Unrecognized test mode: %s\nAvailable modes: "
"J, K, S[E0_NAK], P[acket], F[orce_Enable]\n", arg);
return 1;
}
if (port)
printf(" on downstream facing port %d...\n", port);
else
printf(" on upstream facing port...\n");
if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE,
port ? USB_RT_PORT : USB_RECIP_DEVICE,
port ? USB_PORT_FEAT_TEST : USB_FEAT_TEST,
(mode << 8) | port,
NULL, 0, USB_CNTL_TIMEOUT) == -1) {
printf("Error during SET_FEATURE.\n");
return 1;
} else {
printf("Test mode successfully set. Use 'usb start' "
"to return to normal operation.\n");
return 0;
}
}
/******************************************************************************
* usb boot command intepreter. Derived from diskboot
*/
#ifdef CONFIG_USB_STORAGE
static int do_usbboot(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
return common_diskboot(cmdtp, "usb", argc, argv);
}
#endif /* CONFIG_USB_STORAGE */
static int do_usb_stop_keyboard(int force)
{
#if !defined CONFIG_DM_USB && defined CONFIG_USB_KEYBOARD
if (usb_kbd_deregister(force) != 0) {
printf("USB not stopped: usbkbd still using USB\n");
return 1;
}
#endif
return 0;
}
static void do_usb_start(void)
{
bootstage_mark_name(BOOTSTAGE_ID_USB_START, "usb_start");
if (usb_init() < 0)
return;
/* Driver model will probe the devices as they are found */
# ifdef CONFIG_USB_STORAGE
/* try to recognize storage devices immediately */
usb_stor_curr_dev = usb_stor_scan(1);
# endif
#ifndef CONFIG_DM_USB
# ifdef CONFIG_USB_KEYBOARD
drv_usb_kbd_init();
# endif
#endif /* !CONFIG_DM_USB */
}
#ifdef CONFIG_DM_USB
static void usb_show_info(struct usb_device *udev)
{
struct udevice *child;
usb_display_desc(udev);
usb_display_config(udev);
for (device_find_first_child(udev->dev, &child);
child;
device_find_next_child(&child)) {
if (device_active(child) &&
(device_get_uclass_id(child) != UCLASS_BOOTDEV) &&
(device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
(device_get_uclass_id(child) != UCLASS_BLK)) {
udev = dev_get_parent_priv(child);
if (udev)
usb_show_info(udev);
}
}
}
#endif
/******************************************************************************
* usb command intepreter
*/
static int do_usb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct usb_device *udev = NULL;
int i;
if (argc < 2)
return CMD_RET_USAGE;
if (strncmp(argv[1], "start", 5) == 0) {
if (usb_started)
return 0; /* Already started */
printf("starting USB...\n");
do_usb_start();
return 0;
}
if (strncmp(argv[1], "reset", 5) == 0) {
printf("resetting USB...\n");
if (do_usb_stop_keyboard(1) != 0)
return 1;
usb_stop();
do_usb_start();
return 0;
}
if (strncmp(argv[1], "stop", 4) == 0) {
if (argc != 2)
console_assign(stdin, "serial");
if (do_usb_stop_keyboard(0) != 0)
return 1;
printf("stopping USB..\n");
usb_stop();
return 0;
}
if (!usb_started) {
printf("USB is stopped. Please issue 'usb start' first.\n");
return 1;
}
if (strncmp(argv[1], "tree", 4) == 0) {
puts("USB device tree:\n");
usb_show_tree();
return 0;
}
if (strncmp(argv[1], "inf", 3) == 0) {
if (argc == 2) {
#ifdef CONFIG_DM_USB
usb_for_each_root_dev(usb_show_info);
#else
int d;
for (d = 0; d < USB_MAX_DEVICE; d++) {
udev = usb_get_dev_index(d);
if (udev == NULL)
break;
usb_display_desc(udev);
usb_display_config(udev);
}
#endif
return 0;
} else {
/*
* With driver model this isn't right since we can
* have multiple controllers and the device numbering
* starts at 1 on each bus.
*/
i = dectoul(argv[2], NULL);
printf("config for device %d\n", i);
udev = usb_find_device(i);
if (udev == NULL) {
printf("*** No device available ***\n");
return 0;
} else {
usb_display_desc(udev);
usb_display_config(udev);
}
}
return 0;
}
if (strncmp(argv[1], "test", 4) == 0) {
if (argc < 5)
return CMD_RET_USAGE;
i = dectoul(argv[2], NULL);
udev = usb_find_device(i);
if (udev == NULL) {
printf("Device %d does not exist.\n", i);
return 1;
}
i = dectoul(argv[3], NULL);
return usb_test(udev, i, argv[4]);
}
#ifdef CONFIG_USB_STORAGE
if (strncmp(argv[1], "stor", 4) == 0)
return usb_stor_info();
return blk_common_cmd(argc, argv, UCLASS_USB, &usb_stor_curr_dev);
#else
return CMD_RET_USAGE;
#endif /* CONFIG_USB_STORAGE */
}
U_BOOT_CMD(
usb, 5, 1, do_usb,
"USB sub-system",
"start - start (scan) USB controller\n"
"usb reset - reset (rescan) USB controller\n"
"usb stop [f] - stop USB [f]=force stop\n"
"usb tree - show USB device tree\n"
"usb info [dev] - show available USB devices\n"
"usb test [dev] [port] [mode] - set USB 2.0 test mode\n"
" (specify port 0 to indicate the device's upstream port)\n"
" Available modes: J, K, S[E0_NAK], P[acket], F[orce_Enable]\n"
#ifdef CONFIG_USB_STORAGE
"usb storage - show details of USB storage devices\n"
"usb dev [dev] - show or set current USB storage device\n"
"usb part [dev] - print partition table of one or all USB storage"
" devices\n"
"usb read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
" to memory address `addr'\n"
"usb write addr blk# cnt - write `cnt' blocks starting at block `blk#'\n"
" from memory address `addr'"
#endif /* CONFIG_USB_STORAGE */
);
#ifdef CONFIG_USB_STORAGE
U_BOOT_CMD(
usbboot, 3, 1, do_usbboot,
"boot from USB device",
"loadAddr dev:part"
);
#endif /* CONFIG_USB_STORAGE */
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