/*
 * (C) Copyright 2001
 * Denis Peter, MPL AG Switzerland
 *
 * Most of this source has been derived from the Linux USB
 * project.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#include <common.h>
#include <command.h>
#include <asm/byteorder.h>

#if (CONFIG_COMMANDS & CFG_CMD_USB) && CONFIG_CMD_USB

#include <usb.h>

#ifdef CONFIG_USB_STORAGE
static int usb_stor_curr_dev=-1; /* current device */
#endif

/* some display routines (info command) */
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("");
	}
}

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;
				default:
					printf("reserved");
			}
			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;
		default:
			printf("%s",usb_get_class_desc(dclass));
	}
}

void usb_display_string(struct usb_device *dev,int index)
{
	char buffer[256];
	if (index!=0) {
		if (usb_string(dev,index,&buffer[0],256)>0);
			printf("String: \"%s\"",buffer);
	}
}

void usb_display_desc(struct usb_device *dev)
{
	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].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].bInterfaceClass));
		}
		printf(" - PacketSize: %d  Configurations: %d\n",dev->descriptor.bMaxPacketSize0,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);
	}

}

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->MaxPower*2);
	if (config->iConfiguration) {
		printf("   - ");
		usb_display_string(dev,config->iConfiguration);
		printf("\n");
	}
}

void usb_display_if_desc(struct usb_interface_descriptor *ifdesc,struct usb_device *dev)
{
	printf("     Interface: %d\n",ifdesc->bInterfaceNumber);
	printf("     - Alternate Settings %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");
	}
}

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",epdesc->wMaxPacketSize);
	if ((epdesc->bmAttributes & 0x03)==0x3)
		printf(" Interval %dms",epdesc->bInterval);
	printf("\n");
}

/* main routine to diasplay the configs, interfaces and endpoints */
void usb_display_config(struct usb_device *dev)
{
	struct usb_config_descriptor *config;
	struct usb_interface_descriptor *ifdesc;
	struct usb_endpoint_descriptor *epdesc;
	int i,ii;

	config= &dev->config;
	usb_display_conf_desc(config,dev);
	for(i=0;i<config->no_of_if;i++) {
		ifdesc= &config->if_desc[i];
		usb_display_if_desc(ifdesc,dev);
		for(ii=0;ii<ifdesc->no_of_ep;ii++) {
			epdesc= &ifdesc->ep_desc[ii];
			usb_display_ep_desc(epdesc);
		}
	}
	printf("\n");
}

/* shows the device tree recursively */
void usb_show_tree_graph(struct usb_device *dev,char *pre)
{
	int i,index;
	int has_child,last_child,port;

	index=strlen(pre);
	printf(" %s",pre);
	/* check if the device has connected children */
	has_child=0;
	for(i=0;i<dev->maxchild;i++) {
		if (dev->children[i]!=NULL)
			has_child=1;
	}
	/* check if we are the last one */
	last_child=1;
	if (dev->parent!=NULL) {
		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 */
				port=i;
				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 */
		printf("\b+-");
		/* correct last child */
		if (last_child) {
			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].bInterfaceClass),
		(dev->speed == USB_SPEED_LOW) ? "1.5MBit/s" : (dev->speed == USB_SPEED_FULL)
		? "12MBit/s" : "480MBit/s", dev->config.MaxPower * 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);
	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;
			}
		}
	}
}

/* main routine for the tree command */
void usb_show_tree(struct usb_device *dev)
{
	char preamble[32];

	memset(preamble,0,32);
	usb_show_tree_graph(dev,&preamble[0]);
}


/******************************************************************************
 * usb boot command intepreter. Derived from diskboot
 */
#ifdef CONFIG_USB_STORAGE
int do_usbboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	char *boot_device = NULL;
	char *ep;
	int dev, part=1, rcode;
	ulong addr, cnt, checksum;
	disk_partition_t info;
	image_header_t *hdr;
	block_dev_desc_t *stor_dev;


	switch (argc) {
	case 1:
		addr = CFG_LOAD_ADDR;
		boot_device = getenv ("bootdevice");
		break;
	case 2:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = getenv ("bootdevice");
		break;
	case 3:
		addr = simple_strtoul(argv[1], NULL, 16);
		boot_device = argv[2];
		break;
	default:
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}

	if (!boot_device) {
		puts ("\n** No boot device **\n");
		return 1;
	}

	dev = simple_strtoul(boot_device, &ep, 16);
	stor_dev=usb_stor_get_dev(dev);
	if (stor_dev->type == DEV_TYPE_UNKNOWN) {
		printf ("\n** Device %d not available\n", dev);
		return 1;
	}
	if (stor_dev->block_read==NULL) {
		printf("storage device not initialized. Use usb scan\n");
		return 1;
	}
	if (*ep) {
		if (*ep != ':') {
			puts ("\n** Invalid boot device, use `dev[:part]' **\n");
			return 1;
		}
		part = simple_strtoul(++ep, NULL, 16);
	}

	if (get_partition_info (stor_dev, part, &info)) {
		/* try to boot raw .... */
		strncpy((char *)&info.type[0], BOOT_PART_TYPE, sizeof(BOOT_PART_TYPE));
		strncpy((char *)&info.name[0], "Raw", 4);
		info.start=0;
		info.blksz=0x200;
		info.size=2880;
		printf("error reading partinfo...try to boot raw\n");
	}
	if ((strncmp((char *)info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) &&
	    (strncmp((char *)info.type, BOOT_PART_COMP, sizeof(info.type)) != 0)) {
		printf ("\n** Invalid partition type \"%.32s\""
			" (expect \"" BOOT_PART_TYPE "\")\n",
			info.type);
		return 1;
	}
	printf ("\nLoading from USB device %d, partition %d: "
		"Name: %.32s  Type: %.32s\n",
		dev, part, info.name, info.type);

	debug ("First Block: %ld,  # of blocks: %ld, Block Size: %ld\n",
		info.start, info.size, info.blksz);

	if (stor_dev->block_read(dev, info.start, 1, (ulong *)addr) != 1) {
		printf ("** Read error on %d:%d\n", dev, part);
		return 1;
	}

	hdr = (image_header_t *)addr;

	if (ntohl(hdr->ih_magic) != IH_MAGIC) {
		printf("\n** Bad Magic Number **\n");
		return 1;
	}

	checksum = ntohl(hdr->ih_hcrc);
	hdr->ih_hcrc = 0;

	if (crc32 (0, (uchar *)hdr, sizeof(image_header_t)) != checksum) {
		puts ("\n** Bad Header Checksum **\n");
		return 1;
	}
	hdr->ih_hcrc = htonl(checksum);	/* restore checksum for later use */

	print_image_hdr (hdr);

	cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
	cnt += info.blksz - 1;
	cnt /= info.blksz;
	cnt -= 1;

	if (stor_dev->block_read (dev, info.start+1, cnt,
		      (ulong *)(addr+info.blksz)) != cnt) {
		printf ("\n** Read error on %d:%d\n", dev, part);
		return 1;
	}
	/* Loading ok, update default load address */
	load_addr = addr;

	flush_cache (addr, (cnt+1)*info.blksz);

	/* Check if we should attempt an auto-start */
	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
		char *local_args[2];
		extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
		local_args[0] = argv[0];
		local_args[1] = NULL;
		printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
		rcode=do_bootm (cmdtp, 0, 1, local_args);
		return rcode;
	}
	return 0;
}
#endif /* CONFIG_USB_STORAGE */


/*********************************************************************************
 * usb command intepreter
 */
int do_usb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{

	int i;
	struct usb_device *dev = NULL;
#ifdef CONFIG_USB_STORAGE
	block_dev_desc_t *stor_dev;
#endif

	if ((strncmp(argv[1], "reset", 5) == 0) ||
		 (strncmp(argv[1], "start", 5) == 0)){
		usb_stop();
		printf("(Re)start USB...\n");
		i = usb_init();
#ifdef CONFIG_USB_STORAGE
		/* try to recognize storage devices immediately */
		if (i >= 0)
        {
		  	/* Some of Mass Storage devices require up to 5 sec delay after setConfiguration */
		    printf("Waiting for storage device(s) to settle before scanning...\n");
            wait_ms(5000);
	 		usb_stor_curr_dev = usb_stor_scan();
        }
#endif
		return 0;
	}
	if (strncmp(argv[1],"stop",4) == 0) {
#ifdef CONFIG_USB_KEYBOARD
		if (argc==2) {
			if (usb_kbd_deregister()!=0) {
				printf("USB not stopped: usbkbd still using USB\n");
				return 1;
			}
		}
		else { /* forced stop, switch console in to serial */
			console_assign(stdin,"serial");
			usb_kbd_deregister();
		}
#endif
		printf("stopping USB..\n");
		usb_stop();
		return 0;
	}
	if (strncmp(argv[1],"tree",4) == 0) {
		printf("\nDevice Tree:\n");
		usb_show_tree(usb_get_dev_index(0));
		return 0;
	}
	if (strncmp(argv[1],"inf",3) == 0) {
		int d;
		if (argc==2) {
			for(d=0;d<USB_MAX_DEVICE;d++) {
				dev=usb_get_dev_index(d);
				if (dev==NULL)
					break;
				usb_display_desc(dev);
				usb_display_config(dev);
			}
			return 0;
		}
		else {
			int d;

			i=simple_strtoul(argv[2], NULL, 16);
			printf("config for device %d\n",i);
			for(d=0;d<USB_MAX_DEVICE;d++) {
				dev=usb_get_dev_index(d);
				if (dev==NULL)
					break;
				if (dev->devnum==i)
					break;
			}
			if (dev==NULL) {
				printf("*** NO Device avaiable ***\n");
				return 0;
			}
			else {
				usb_display_desc(dev);
				usb_display_config(dev);
			}
		}
		return 0;
	}
#ifdef CONFIG_USB_STORAGE
	if (strncmp(argv[1], "scan", 4) == 0) {
		printf("  NOTE: this command is obsolete and will be phased out\n");
		printf("  please use 'usb storage' for USB storage devices information\n\n");
		usb_stor_info();
		return 0;
	}

	if (strncmp(argv[1], "stor", 4) == 0) {
		usb_stor_info();
		return 0;
	}

	if (strncmp(argv[1],"part",4) == 0) {
		int devno, ok;
		for (ok=0, devno=0; devno<USB_MAX_STOR_DEV; ++devno) {
			stor_dev=usb_stor_get_dev(devno);
			if (stor_dev->type!=DEV_TYPE_UNKNOWN) {
				ok++;
				if (devno)
					printf("\n");
				printf("print_part of %x\n",devno);
				print_part(stor_dev);
			}
		}
		if (!ok) {
			printf("\nno USB devices available\n");
			return 1;
		}
		return 0;
	}
	if (strcmp(argv[1],"read") == 0) {
		if (usb_stor_curr_dev<0) {
			printf("no current device selected\n");
			return 1;
		}
		if (argc==5) {
			unsigned long addr = simple_strtoul(argv[2], NULL, 16);
			unsigned long blk  = simple_strtoul(argv[3], NULL, 16);
			unsigned long cnt  = simple_strtoul(argv[4], NULL, 16);
			unsigned long n;
			printf ("\nUSB read: device %d block # %ld, count %ld ... ",
					usb_stor_curr_dev, blk, cnt);
			stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
			n = stor_dev->block_read(usb_stor_curr_dev, blk, cnt, (ulong *)addr);
			printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
			if (n==cnt)
				return 0;
			return 1;
		}
	}
	if (strncmp(argv[1], "dev", 3) == 0) {
		if (argc == 3) {
			int dev = (int)simple_strtoul(argv[2], NULL, 10);
			printf ("\nUSB device %d: ", dev);
			if (dev >= USB_MAX_STOR_DEV) {
				printf("unknown device\n");
				return 1;
			}
			printf ("\n    Device %d: ", dev);
			stor_dev=usb_stor_get_dev(dev);
			dev_print(stor_dev);
			if (stor_dev->type == DEV_TYPE_UNKNOWN) {
				return 1;
			}
			usb_stor_curr_dev = dev;
			printf("... is now current device\n");
			return 0;
		}
		else {
			printf ("\nUSB device %d: ", usb_stor_curr_dev);
			stor_dev=usb_stor_get_dev(usb_stor_curr_dev);
			dev_print(stor_dev);
			if (stor_dev->type == DEV_TYPE_UNKNOWN) {
				return 1;
			}
			return 0;
		}
		return 0;
	}
#endif /* CONFIG_USB_STORAGE */
	printf ("Usage:\n%s\n", cmdtp->usage);
	return 1;
}


#ifdef CONFIG_USB_STORAGE
U_BOOT_CMD(
	usb,	5,	1,	do_usb,
	"usb     - USB sub-system\n",
	"usb start - start the usb interface, including scan of the bus. Must be\n"
    "       executed prior to using the USB, and should be executed only once.\n"
	"usb tree  - show USB device tree\n"
	"usb info [dev] - show available USB devices\n"
	"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"
);


U_BOOT_CMD(
	usbboot,	3,	1,	do_usbboot,
	"usbboot - boot from USB device\n",
	"loadAddr dev:part\n"
);

#else
U_BOOT_CMD(
	usb,	5,	1,	do_usb,
	"usb     - USB sub-system\n",
	"reset - reset (rescan) USB controller\n"
	"usb  tree  - show USB device tree\n"
	"usb  info [dev] - show available USB devices\n"
);
#endif
#endif