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u-boot/cmd/usb.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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// 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 <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 char *portspeed(int speed)
{
char *speed_str;
switch (speed) {
case USB_SPEED_SUPER:
speed_str = "5 Gb/s";
break;
case USB_SPEED_HIGH:
speed_str = "480 Mb/s";
break;
case USB_SPEED_LOW:
speed_str = "1.5 Mb/s";
break;
default:
speed_str = "12 Mb/s";
break;
}
return speed_str;
}
/* 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 ((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(cmd_tbl_t *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_USB_HOST_ETHER
# ifdef CONFIG_DM_ETH
# ifndef CONFIG_DM_USB
# error "You must use CONFIG_DM_USB if you want to use CONFIG_USB_HOST_ETHER with CONFIG_DM_ETH"
# endif
# else
/* try to recognize ethernet devices immediately */
usb_ether_curr_dev = usb_host_eth_scan(1);
# endif
#endif
}
#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_USB_EMUL) &&
(device_get_uclass_id(child) != UCLASS_BLK)) {
udev = dev_get_parent_priv(child);
usb_show_info(udev);
}
}
}
#endif
/******************************************************************************
* usb command intepreter
*/
static int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct usb_device *udev = NULL;
int i;
extern char usb_started;
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 = simple_strtoul(argv[2], NULL, 10);
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 = simple_strtoul(argv[2], NULL, 10);
udev = usb_find_device(i);
if (udev == NULL) {
printf("Device %d does not exist.\n", i);
return 1;
}
i = simple_strtoul(argv[3], NULL, 10);
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, IF_TYPE_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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