1342 lines
36 KiB
C
1342 lines
36 KiB
C
/*
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*
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* Most of this source has been derived from the Linux USB
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* project:
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* (C) Copyright Linus Torvalds 1999
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* (C) Copyright Johannes Erdfelt 1999-2001
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* (C) Copyright Andreas Gal 1999
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* (C) Copyright Gregory P. Smith 1999
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* (C) Copyright Deti Fliegl 1999 (new USB architecture)
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* (C) Copyright Randy Dunlap 2000
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* (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
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* (C) Copyright Yggdrasil Computing, Inc. 2000
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* (usb_device_id matching changes by Adam J. Richter)
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*
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* Adapted for U-Boot:
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* (C) Copyright 2001 Denis Peter, MPL AG Switzerland
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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/*
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* How it works:
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*
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* Since this is a bootloader, the devices will not be automatic
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* (re)configured on hotplug, but after a restart of the USB the
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* device should work.
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*
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* For each transfer (except "Interrupt") we wait for completion.
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*/
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#include <stdint.h>
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#include "bas_string.h"
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#include "bas_printf.h"
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#include "util.h" /* for byte swap funcs */
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#include "wait.h"
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#include <stdarg.h>
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#include "usb.h"
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#include "usb_hub.h"
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#define DEBUG_USB
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#ifdef DEBUG_USB
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#define dbg(format, arg...) do { xprintf("DEBUG: %s(): " format, __FUNCTION__, ##arg); } while (0)
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#else
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#define dbg(format, arg...) do { ; } while (0)
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#endif /* DEBUG_USB */
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#define err(format, arg...) do { xprintf("ERROR: %s(): " format, __FUNCTION__, ##arg); } while (0)
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#define info(format, arg...) do { xprintf("INFO: %s(): " format, __FUNCTION__, ##arg); } while (0)
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struct hci
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{
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/* ------- common part -------- */
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long handle; /* PCI BIOS */
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const struct pci_device_id *ent;
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int usbnum;
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/* ---- end of common part ---- */
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};
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static struct usb_device *usb_dev;
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int bus_index;
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static int dev_index[USB_MAX_BUS];
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static struct hci *controller_priv[USB_MAX_BUS];
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static int asynch_allowed;
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static struct devrequest *setup_packet;
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char usb_started; /* flag for the started/stopped USB status */
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/*
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* some forward declarations...
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*/
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void usb_scan_devices(void *priv);
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/*
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* Init USB device controller
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*/
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int usb_init(int32_t handle, const struct pci_device_id *ent)
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{
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struct hci *priv;
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int res = 0;
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bus_index = 0;
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if (bus_index >= USB_MAX_BUS)
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{
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dbg("bus_index >= USB_MAX_BUS");
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return -1;
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}
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dev_index[bus_index] = 0;
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asynch_allowed = 1;
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if (handle && (ent != NULL))
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{
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if (driver_mem_init())
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{
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usb_started = 0;
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dbg("driver_mem_init failed\r\n");
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return -1; /* out of memory */
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}
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if (usb_dev == NULL)
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{
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usb_dev = (struct usb_device *) driver_mem_alloc(sizeof(struct usb_device) * USB_MAX_BUS * USB_MAX_DEVICE);
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}
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if (usb_dev == NULL)
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{
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usb_started = 0;
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dbg("could not allocate memory\r\n");
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return -1; /* out of memory */
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}
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}
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else /* restart */
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{
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int i;
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res = 0;
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for (i = 0; i < USB_MAX_BUS; i++)
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{
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if (controller_priv[i] != NULL)
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{
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long handle = controller_priv[i]->handle;
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if (handle)
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{
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res |= usb_init(handle, NULL); /* FIXME: recursive call!? */
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}
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}
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}
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return res;
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}
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usb_hub_reset(bus_index);
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/* init low_level USB */
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switch(ent->class)
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{
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case PCI_CLASS_SERIAL_USB_UHCI:
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//res = uhci_usb_lowlevel_init(handle, ent, &priv);
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dbg("sorry, no uhci driver available\r\n");
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break;
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case PCI_CLASS_SERIAL_USB_OHCI:
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dbg("initialize ohci host controller interface\r\n");
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res = ohci_usb_lowlevel_init(handle, ent, (void *) &priv);
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break;
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case PCI_CLASS_SERIAL_USB_EHCI:
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dbg("initialize ehci host controller interface\r\n");
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res = ehci_usb_lowlevel_init(handle, ent, (void *) &priv);
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break;
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default:
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res = -1;
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break;
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}
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if (!res)
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{
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/*
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* if lowlevel init is OK, scan the bus for devices
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* i.e. search HUBs and configure them
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*/
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if (setup_packet == NULL)
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{
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setup_packet = driver_mem_alloc(sizeof(struct devrequest));
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if (setup_packet == NULL)
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{
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usb_started = 0;
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dbg("could not allocate memory\r\n");
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return -1; /* no memory, no USB */
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}
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}
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xprintf("Scanning bus for devices... ");
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controller_priv[bus_index] = priv;
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controller_priv[bus_index]->usbnum = bus_index;
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usb_scan_devices(priv);
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bus_index++;
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usb_started = 1;
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return 0;
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}
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else
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{
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xprintf("\r\nError, couldn't init Lowlevel part\r\n");
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usb_started = 0;
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return -1;
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}
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}
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/*
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* Stop USB. This stops the LowLevel Part and deregisters USB devices.
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*/
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int usb_stop(void)
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{
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int i;
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int res = 0;
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if (usb_started)
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{
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asynch_allowed = 1;
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usb_started = 0;
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usb_hub_reset(bus_index);
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driver_mem_free(setup_packet);
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for (i = 0; i < USB_MAX_BUS; i++)
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{
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struct hci *priv = controller_priv[i];
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if (priv != NULL)
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{
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switch(priv->ent->class)
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{
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#ifdef CONFIG_USB_UHCI
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case PCI_CLASS_SERIAL_USB_UHCI:
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res |= uhci_usb_lowlevel_stop(priv);
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break;
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#endif
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#ifdef CONFIG_USB_OHCI
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case PCI_CLASS_SERIAL_USB_OHCI:
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res |= ohci_usb_lowlevel_stop(priv);
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break;
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#endif
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#ifdef CONFIG_USB_EHCI
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case PCI_CLASS_SERIAL_USB_EHCI:
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res |= ehci_usb_lowlevel_stop(priv);
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break;
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#endif
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}
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}
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}
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bus_index = 0;
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driver_mem_release(); /* release all driver mem */
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}
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return res;
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}
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void usb_enable_interrupt(int enable)
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{
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ohci_usb_enable_interrupt(enable);
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ehci_usb_enable_interrupt(enable);
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}
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/*
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* disables the asynch behaviour of the control message. This is used for data
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* transfers that uses the exclusiv access to the control and bulk messages.
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*/
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void usb_disable_asynch(int disable)
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{
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asynch_allowed = !disable;
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}
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/*
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* Message wrappers.
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*
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*/
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/*
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* submits an Interrupt Message
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*/
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int usb_submit_int_msg(struct usb_device *dev, uint32_t pipe, void *buffer, int transfer_len, int interval)
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{
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struct hci *priv = (struct hci *) dev->priv_hcd;
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int ret = 0;
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switch(priv->ent->class)
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{
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case PCI_CLASS_SERIAL_USB_OHCI:
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ret = ohci_submit_int_msg(dev, pipe, buffer, transfer_len, interval);
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break;
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case PCI_CLASS_SERIAL_USB_EHCI:
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ret = ehci_submit_int_msg(dev, pipe, buffer, transfer_len, interval);
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break;
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default:
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ret = -1;
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break;
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}
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return ret;
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}
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/*
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* submits a control message and waits for completion (at least timeout * 1ms)
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* If timeout is 0, we don't wait for completion (used for example to set and
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* clear keyboards LEDs). For data transfers, (storage transfers) we don't
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* allow control messages with 0 timeout, by previousely resetting the flag
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* asynch_allowed (usb_disable_asynch(1)).
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* returns the transfered length if OK or -1 if error. The transfered length
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* and the current status are stored in the dev->act_len and dev->status.
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*/
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int usb_control_msg(struct usb_device *dev, unsigned int pipe,
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unsigned char request, unsigned char requesttype,
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unsigned short value, unsigned short index,
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void *data, unsigned short size, int timeout)
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{
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struct hci *priv = (struct hci *) dev->priv_hcd;
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if ((timeout == 0) && (!asynch_allowed))
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{
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/* request for a asynch control pipe is not allowed */
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dbg("request for an async control pipe is not allowed\r\n");
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return -1;
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}
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/* set setup command */
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setup_packet->requesttype = requesttype;
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setup_packet->request = request;
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setup_packet->value = swpw(value);
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setup_packet->index = swpw(index);
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setup_packet->length = swpw(size);
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dbg("usb_control_msg: request: 0x%X, requesttype: 0x%X, value 0x%X index 0x%X length 0x%X\r\n", request, requesttype, value, index, size);
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switch(priv->ent->class)
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{
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case PCI_CLASS_SERIAL_USB_OHCI:
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dev->status = USB_ST_NOT_PROC; /* not yet processed */
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ohci_submit_control_msg(dev, pipe, data, size, setup_packet);
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break;
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case PCI_CLASS_SERIAL_USB_EHCI:
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dev->status = USB_ST_NOT_PROC; /* not yet processed */
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ehci_submit_control_msg(dev, pipe, data, size, setup_packet);
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break;
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default:
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return -1;
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}
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if (timeout == 0)
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{
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return (int) size;
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}
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if (dev->status != 0)
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{
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/*
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* Let's wait a while for the timeout to elapse.
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* It has no real use, but it keeps the interface happy.
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*/
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return -1;
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}
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return dev->act_len;
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}
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/*
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* submits bulk message, and waits for completion. returns 0 if Ok or
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* -1 if Error.
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* synchronous behavior
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*/
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int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout)
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{
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struct hci *priv = (struct hci *) dev->priv_hcd;
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if (len < 0)
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{
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return -1;
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}
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switch(priv->ent->class)
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{
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case PCI_CLASS_SERIAL_USB_OHCI:
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dev->status = USB_ST_NOT_PROC; /* not yet processed */
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ohci_submit_bulk_msg(dev, pipe, data, len);
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break;
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case PCI_CLASS_SERIAL_USB_EHCI:
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dev->status = USB_ST_NOT_PROC; /* not yet processed */
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ehci_submit_bulk_msg(dev, pipe, data, len);
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break;
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default:
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return -1;
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}
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while (timeout--)
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{
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if (!((volatile uint32_t) dev->status & USB_ST_NOT_PROC)) /* FIXME: this volatile does nothing! */
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break;
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wait(1);
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}
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*actual_length = dev->act_len;
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if (dev->status == 0)
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{
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return 0;
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}
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else
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{
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return -1;
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}
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}
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/*
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* Max Packet stuff
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*/
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/*
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* returns the max packet size, depending on the pipe direction and
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* the configurations values
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*/
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int usb_maxpacket(struct usb_device *dev, uint32_t pipe)
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{
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/* direction is out -> use emaxpacket out */
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if ((pipe & USB_DIR_IN) == 0)
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{
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return dev->epmaxpacketout[((pipe >> 15) & 0xf)];
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}
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else
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{
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return dev->epmaxpacketin[((pipe >> 15) & 0xf)];
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}
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}
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/*
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* The routine usb_set_maxpacket_ep() is extracted from the loop of routine
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* usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
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* when it is inlined in 1 single routine. What happens is that the register r3
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* is used as loop-count 'i', but gets overwritten later on.
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* This is clearly a compiler bug, but it is easier to workaround it here than
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* to update the compiler (Occurs with at least several GCC 4.{1,2},x
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* CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
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*
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* We probably do not need that for Coldfire - at least I hope so.
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*/
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static void usb_set_maxpacket_ep(struct usb_device *dev, struct usb_endpoint_descriptor *ep)
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{
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int b;
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b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
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if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_CONTROL)
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{
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/* Control => bidirectional */
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dev->epmaxpacketout[b] = ep->wMaxPacketSize;
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dev->epmaxpacketin[b] = ep->wMaxPacketSize;
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dbg("##Control EP epmaxpacketout/in[%d] = %d\r\n", b, dev->epmaxpacketin[b]);
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}
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else
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{
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if ((ep->bEndpointAddress & 0x80) == 0)
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{
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/* OUT Endpoint */
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if (ep->wMaxPacketSize > dev->epmaxpacketout[b])
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{
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dev->epmaxpacketout[b] = ep->wMaxPacketSize;
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dbg("##EP epmaxpacketout[%d] = %d\r\n", b, dev->epmaxpacketout[b]);
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}
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}
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else
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{
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/* IN Endpoint */
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if (ep->wMaxPacketSize > dev->epmaxpacketin[b])
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{
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dev->epmaxpacketin[b] = ep->wMaxPacketSize;
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dbg("##EP epmaxpacketin[%d] = %d\r\n", b, dev->epmaxpacketin[b]);
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}
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} /* if out */
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} /* if control */
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}
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|
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/*
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* set the max packed value of all endpoints in the given configuration
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*/
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int usb_set_maxpacket(struct usb_device *dev)
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{
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int i;
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int ii;
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for (i = 0; i < dev->config.bNumInterfaces; i++)
|
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{
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for (ii = 0; ii < dev->config.if_desc[i].bNumEndpoints; ii++)
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{
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usb_set_maxpacket_ep(dev,&dev->config.if_desc[i].ep_desc[ii]);
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}
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}
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return 0;
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}
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|
|
/*
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* Parse the config, located in buffer, and fills the dev->config structure.
|
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* Note that all little/big endian swapping are done automatically.
|
|
*/
|
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int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno)
|
|
{
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struct usb_descriptor_header *head;
|
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int index;
|
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int ifno;
|
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int epno;
|
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int curr_if_num;
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ifno = -1;
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epno = -1;
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curr_if_num = -1;
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dev->configno = cfgno;
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head = (struct usb_descriptor_header *) &buffer[0];
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if (head->bDescriptorType != USB_DT_CONFIG)
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{
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dbg(" ERROR: NOT USB_CONFIG_DESC %x\r\n", head->bDescriptorType);
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return -1;
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}
|
|
memcpy(&dev->config, buffer, buffer[0]);
|
|
dev->config.wTotalLength = swpw(dev->config.wTotalLength);
|
|
dev->config.no_of_if = 0;
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|
index = dev->config.bLength;
|
|
|
|
/*
|
|
* Ok the first entry must be a configuration entry,
|
|
* now process the others
|
|
*/
|
|
head = (struct usb_descriptor_header *) &buffer[index];
|
|
|
|
while (index + 1 < dev->config.wTotalLength)
|
|
{
|
|
switch (head->bDescriptorType)
|
|
{
|
|
case USB_DT_INTERFACE:
|
|
if (((struct usb_interface_descriptor *) &buffer[index])->bInterfaceNumber != curr_if_num)
|
|
{
|
|
/* this is a new interface, copy new desc */
|
|
ifno = dev->config.no_of_if;
|
|
dev->config.no_of_if++;
|
|
memcpy(&dev->config.if_desc[ifno], &buffer[index], buffer[index]);
|
|
dev->config.if_desc[ifno].no_of_ep = 0;
|
|
dev->config.if_desc[ifno].num_altsetting = 1;
|
|
curr_if_num = dev->config.if_desc[ifno].bInterfaceNumber;
|
|
}
|
|
else
|
|
{
|
|
/* found alternate setting for the interface */
|
|
dev->config.if_desc[ifno].num_altsetting++;
|
|
}
|
|
break;
|
|
|
|
case USB_DT_ENDPOINT:
|
|
epno = dev->config.if_desc[ifno].no_of_ep;
|
|
/* found an endpoint */
|
|
dev->config.if_desc[ifno].no_of_ep++;
|
|
memcpy(&dev->config.if_desc[ifno].ep_desc[epno], &buffer[index], buffer[index]);
|
|
dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize = swpw(dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize);
|
|
dbg("if %d, ep %d\r\n", ifno, epno);
|
|
break;
|
|
|
|
default:
|
|
if (head->bLength == 0)
|
|
return 1;
|
|
dbg("unknown Descriptor Type : %x\r\n", head->bDescriptorType);
|
|
#ifdef USB_DEBUG
|
|
{
|
|
unsigned char *ch;
|
|
int i;
|
|
|
|
ch = (unsigned char *) head;
|
|
for (i = 0; i < head->bLength; i++)
|
|
{
|
|
dbg(" %02X", *ch++);
|
|
}
|
|
dbg("\r\n");
|
|
}
|
|
#endif /* USB_DEBUG */
|
|
break;
|
|
}
|
|
index += head->bLength;
|
|
head = (struct usb_descriptor_header *) &buffer[index];
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Clears an endpoint
|
|
* endp: endpoint number in bits 0-3;
|
|
* direction flag in bit 7 (1 = IN, 0 = OUT)
|
|
*/
|
|
int usb_clear_halt(struct usb_device *dev, int pipe)
|
|
{
|
|
int result;
|
|
int endp = usb_pipeendpoint(pipe) | (usb_pipein(pipe) << 7);
|
|
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
|
|
|
|
/* don't clear if failed */
|
|
if (result < 0)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* NOTE: we do not get status and verify reset was successful
|
|
* as some devices are reported to lock up upon this check..
|
|
*/
|
|
usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
|
|
|
|
/* toggle is reset on clear */
|
|
usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* get_descriptor type
|
|
*/
|
|
int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size)
|
|
{
|
|
int res;
|
|
|
|
res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
|
|
USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, (type << 8) + index, 0, buf, size, USB_CNTL_TIMEOUT);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* gets configuration cfgno and store it in the buffer
|
|
*/
|
|
int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer, int cfgno)
|
|
{
|
|
int result;
|
|
unsigned int tmp;
|
|
struct usb_config_descriptor *config;
|
|
|
|
config = (struct usb_config_descriptor *) &buffer[0];
|
|
result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
|
|
|
|
if (result < 9)
|
|
{
|
|
if (result < 0)
|
|
{
|
|
dbg("unable to get descriptor, error %lX\r\n", dev->status);
|
|
}
|
|
else
|
|
{
|
|
dbg("config descriptor too short (expected %i, got %i)\n", 9, result);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
tmp = swpw(config->wTotalLength);
|
|
|
|
if (tmp > USB_BUFSIZ)
|
|
{
|
|
dbg("usb_get_configuration_no: failed to get descriptor - too long: %d\r\n", tmp);
|
|
return -1;
|
|
}
|
|
result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp);
|
|
dbg("get_conf_no %d Result %d, wLength %d\r\n", cfgno, result, tmp);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* set address of a device to the value in dev->devnum.
|
|
* This can only be done by addressing the device via the default address (0)
|
|
*/
|
|
int usb_set_address(struct usb_device *dev)
|
|
{
|
|
int res;
|
|
|
|
dbg("set address %d\r\n", dev->devnum);
|
|
res = usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS, 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT);
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* set interface number to interface
|
|
*/
|
|
int usb_set_interface(struct usb_device *dev, int interface, int alternate)
|
|
{
|
|
struct usb_interface_descriptor *if_face = NULL;
|
|
int ret, i;
|
|
|
|
for (i = 0; i < dev->config.bNumInterfaces; i++)
|
|
{
|
|
if (dev->config.if_desc[i].bInterfaceNumber == interface)
|
|
{
|
|
if_face = &dev->config.if_desc[i];
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!if_face)
|
|
{
|
|
dbg("selecting invalid interface %d", interface);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* We should return now for devices with only one alternate setting.
|
|
* According to 9.4.10 of the Universal Serial Bus Specification
|
|
* Revision 2.0 such devices can return with a STALL. This results in
|
|
* some USB sticks timeouting during initialization and then being
|
|
* unusable in U-Boot.
|
|
*/
|
|
if (if_face->num_altsetting == 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, alternate, interface, NULL, 0, USB_CNTL_TIMEOUT * 5);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* set configuration number to configuration
|
|
*/
|
|
int usb_set_configuration(struct usb_device *dev, int configuration)
|
|
{
|
|
int res;
|
|
|
|
dbg("set configuration %d\r\n", configuration);
|
|
/* set setup command */
|
|
res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
USB_REQ_SET_CONFIGURATION, 0, configuration, 0, NULL, 0, USB_CNTL_TIMEOUT);
|
|
if (res == 0)
|
|
{
|
|
dev->toggle[0] = 0;
|
|
dev->toggle[1] = 0;
|
|
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* set protocol to protocol
|
|
*/
|
|
int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
|
|
{
|
|
return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
|
|
protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
|
|
}
|
|
|
|
/*
|
|
* set idle
|
|
*/
|
|
int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
|
|
{
|
|
return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
|
|
(duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
|
|
}
|
|
|
|
/*
|
|
* get report
|
|
*/
|
|
int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
|
|
unsigned char id, void *buf, int size)
|
|
{
|
|
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
|
|
USB_REQ_GET_REPORT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
|
|
(type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
|
|
}
|
|
|
|
/*
|
|
* get class descriptor
|
|
*/
|
|
int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
|
|
unsigned char type, unsigned char id, void *buf, int size)
|
|
{
|
|
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
|
|
USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
|
|
(type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
|
|
}
|
|
|
|
/*
|
|
* get string index in buffer
|
|
*/
|
|
int usb_get_string(struct usb_device *dev, unsigned short langid, unsigned char index, void *buf, int size)
|
|
{
|
|
int i;
|
|
int result;
|
|
|
|
for (i = 0; i < 3; ++i)
|
|
{
|
|
/* some devices are flaky */
|
|
result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
|
|
(USB_DT_STRING << 8) + index, langid, buf, size, USB_CNTL_TIMEOUT);
|
|
if (result > 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void usb_try_string_workarounds(unsigned char *buf, int *length)
|
|
{
|
|
int newlength;
|
|
int oldlength = *length;
|
|
|
|
for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
|
|
{
|
|
char c = buf[newlength];
|
|
|
|
if ((c < ' ') || (c >= 127) || buf[newlength + 1])
|
|
break;
|
|
}
|
|
|
|
if (newlength > 2)
|
|
{
|
|
buf[0] = newlength;
|
|
*length = newlength;
|
|
}
|
|
}
|
|
|
|
static int usb_string_sub(struct usb_device *dev, unsigned int langid, unsigned int index, unsigned char *buf)
|
|
{
|
|
int rc;
|
|
|
|
/*
|
|
* Try to read the string descriptor by asking for the maximum
|
|
* possible number of bytes
|
|
*/
|
|
rc = usb_get_string(dev, langid, index, buf, 255);
|
|
|
|
/*
|
|
* If that failed try to read the descriptor length, then
|
|
* ask for just that many bytes
|
|
*/
|
|
if (rc < 2)
|
|
{
|
|
rc = usb_get_string(dev, langid, index, buf, 2);
|
|
if (rc == 2)
|
|
{
|
|
rc = usb_get_string(dev, langid, index, buf, buf[0]);
|
|
}
|
|
}
|
|
|
|
if (rc >= 2)
|
|
{
|
|
if (!buf[0] && !buf[1])
|
|
{
|
|
usb_try_string_workarounds(buf, &rc);
|
|
}
|
|
|
|
/* There might be extra junk at the end of the descriptor */
|
|
if (buf[0] < rc)
|
|
{
|
|
rc = buf[0];
|
|
}
|
|
rc = rc - (rc & 1); /* force a multiple of two */
|
|
}
|
|
|
|
if (rc < 2)
|
|
{
|
|
rc = -1;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* usb_string:
|
|
* Get string index and translate it to ascii.
|
|
* returns string length (> 0) or error (< 0)
|
|
*/
|
|
int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
|
|
{
|
|
unsigned char *tbuf;
|
|
int err;
|
|
unsigned int u, idx;
|
|
|
|
if (size <= 0 || !buf || !index)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
buf[0] = 0;
|
|
tbuf = (unsigned char *) driver_mem_alloc(USB_BUFSIZ);
|
|
|
|
if (tbuf == NULL)
|
|
{
|
|
dbg("usb_string: malloc failure\r\n");
|
|
return -1;
|
|
}
|
|
|
|
/* get langid for strings if it's not yet known */
|
|
if (!dev->have_langid)
|
|
{
|
|
err = usb_string_sub(dev, 0, 0, tbuf);
|
|
if (err < 0)
|
|
{
|
|
dbg("error getting string descriptor 0 (error=%lx)\r\n", dev->status);
|
|
driver_mem_free(tbuf);
|
|
return -1;
|
|
}
|
|
else if (tbuf[0] < 4)
|
|
{
|
|
dbg("string descriptor 0 too short\r\n");
|
|
driver_mem_free(tbuf);
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
dev->have_langid = -1;
|
|
dev->string_langid = tbuf[2] | (tbuf[3] << 8);
|
|
/* always use the first langid listed */
|
|
dbg("USB device number %d default language ID 0x%x\r\n", dev->devnum, dev->string_langid);
|
|
}
|
|
}
|
|
err = usb_string_sub(dev, dev->string_langid, index, tbuf);
|
|
if (err < 0)
|
|
{
|
|
driver_mem_free(tbuf);
|
|
return err;
|
|
}
|
|
|
|
size--; /* leave room for trailing NULL char in output buffer */
|
|
for (idx = 0, u = 2; u < err; u += 2)
|
|
{
|
|
if (idx >= size)
|
|
{
|
|
break;
|
|
}
|
|
if (tbuf[u + 1]) /* high byte */
|
|
{
|
|
buf[idx++] = '?'; /* non-ASCII character */
|
|
}
|
|
else
|
|
{
|
|
buf[idx++] = tbuf[u];
|
|
}
|
|
}
|
|
buf[idx] = 0;
|
|
err = idx;
|
|
driver_mem_free(tbuf);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* USB device handling:
|
|
* the USB device are static allocated [USB_MAX_DEVICE].
|
|
*/
|
|
|
|
/*
|
|
* Something got disconnected. Get rid of it, and all of its children.
|
|
*/
|
|
void usb_disconnect(struct usb_device **pdev)
|
|
{
|
|
struct usb_device *dev = *pdev;
|
|
if (dev != NULL)
|
|
{
|
|
int i;
|
|
|
|
dbg("USB %d disconnect on device %d\r\n", dev->parent->usbnum, dev->parent->devnum);
|
|
dbg("USB %d disconnected, device number %d\r\n", dev->usbnum, dev->devnum);
|
|
|
|
if (dev->deregister != NULL)
|
|
{
|
|
dev->deregister(dev);
|
|
}
|
|
|
|
/* Free up all the children.. */
|
|
for (i = 0; i < USB_MAXCHILDREN; i++)
|
|
{
|
|
if (dev->children[i] != NULL)
|
|
{
|
|
dbg("USB %d, disconnect children %d\r\n", dev->usbnum, dev->children[i]->devnum);
|
|
usb_disconnect(&dev->children[i]);
|
|
dev->children[i] = NULL;
|
|
}
|
|
}
|
|
|
|
/* Free up the device itself, including its device number */
|
|
if (dev->devnum > 0)
|
|
{
|
|
dev_index[dev->usbnum]--;
|
|
memset(dev, 0, sizeof(struct usb_device));
|
|
dev->devnum = -1;
|
|
}
|
|
*pdev = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* returns a pointer to the device with the index [index].
|
|
* if the device is not assigned (dev->devnum==-1) returns NULL
|
|
*/
|
|
struct usb_device *usb_get_dev_index(int index, int index_bus)
|
|
{
|
|
struct usb_device *dev;
|
|
|
|
if ((index_bus >= USB_MAX_BUS) || (index_bus < 0)
|
|
|| (index >= USB_MAX_DEVICE) || (index < 0))
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
dev = &usb_dev[(index_bus * USB_MAX_DEVICE) + index];
|
|
|
|
if ((controller_priv[index_bus] == NULL) || (dev->devnum == -1))
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
return dev;
|
|
}
|
|
|
|
/*
|
|
* returns a pointer of a new device structure or NULL, if
|
|
* no device struct is available
|
|
*/
|
|
struct usb_device *usb_alloc_new_device(int bus_index, void *priv)
|
|
{
|
|
int i;
|
|
int index = dev_index[bus_index];
|
|
struct usb_device *dev;
|
|
|
|
dbg("USB %d new device %d\r\n", bus_index, index);
|
|
if (index >= USB_MAX_DEVICE)
|
|
{
|
|
dbg("ERROR, too many USB Devices, max=%d\r\n", USB_MAX_DEVICE);
|
|
return NULL;
|
|
}
|
|
|
|
/* default Address is 0, real addresses start with 1 */
|
|
dev = &usb_dev[(bus_index * USB_MAX_DEVICE) + index];
|
|
dev->devnum = index + 1;
|
|
dev->maxchild = 0;
|
|
|
|
for (i = 0; i < USB_MAXCHILDREN; dev->children[i++] = NULL)
|
|
;
|
|
|
|
dev->parent = NULL;
|
|
dev->priv_hcd = priv;
|
|
dev->usbnum = bus_index;
|
|
dev_index[bus_index]++;
|
|
|
|
return dev;
|
|
}
|
|
|
|
// #define CONFIG_LEGACY_USB_INIT_SEQ
|
|
/*
|
|
* By the time we get here, the device has gotten a new device ID
|
|
* and is in the default state. We need to identify the thing and
|
|
* get the ball rolling..
|
|
*
|
|
* Returns 0 for success, != 0 for error.
|
|
*/
|
|
int usb_new_device(struct usb_device *dev)
|
|
{
|
|
int addr;
|
|
int err;
|
|
int tmp;
|
|
unsigned char *tmpbuf;
|
|
|
|
dbg("\r\n");
|
|
#ifndef CONFIG_LEGACY_USB_INIT_SEQ
|
|
struct usb_device_descriptor *desc;
|
|
int port = -1;
|
|
struct usb_device *parent = dev->parent;
|
|
unsigned short portstatus;
|
|
#endif
|
|
|
|
if (dev == NULL)
|
|
{
|
|
dbg("called with NULL device\r\n");
|
|
return 1;
|
|
}
|
|
|
|
/* We still haven't set the Address yet */
|
|
addr = dev->devnum;
|
|
dev->devnum = 0;
|
|
|
|
tmpbuf = (unsigned char *) driver_mem_alloc(USB_BUFSIZ);
|
|
if (tmpbuf == NULL)
|
|
{
|
|
dbg("malloc failure\r\n");
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_LEGACY_USB_INIT_SEQ
|
|
/*
|
|
* this is the old and known way of initializing devices, it is
|
|
* different than what Windows and Linux are doing. Windows and Linux
|
|
* both retrieve 64 bytes while reading the device descriptor
|
|
* Several USB stick devices report ERR: CTL_TIMEOUT, caused by an
|
|
* invalid header while reading 8 bytes as device descriptor.
|
|
*/
|
|
dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
|
|
dev->maxpacketsize = PACKET_SIZE_8;
|
|
dev->epmaxpacketin[0] = 8;
|
|
dev->epmaxpacketout[0] = 8;
|
|
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8);
|
|
if (err < 8)
|
|
{
|
|
dbg("\r\nUSB device not responding, giving up (status=%lX)\r\n", dev->status);
|
|
driver_mem_free(tmpbuf);
|
|
return 1;
|
|
}
|
|
#else
|
|
/*
|
|
* This is a Windows scheme of initialization sequence, with double
|
|
* reset of the device (Linux uses the same sequence)
|
|
* Some equipment is said to work only with such init sequence; this
|
|
* patch is based on the work by Alan Stern:
|
|
* http://sourceforge.net/mailarchive/forum.php?
|
|
* thread_id=5729457&forum_id=5398
|
|
*/
|
|
|
|
/*
|
|
* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
|
|
* only 18 bytes long, this will terminate with a short packet. But if
|
|
* the maxpacket size is 8 or 16 the device may be waiting to transmit
|
|
* some more, or keeps on retransmitting the 8 byte header.
|
|
*/
|
|
desc = (struct usb_device_descriptor *) tmpbuf;
|
|
dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
|
|
|
|
/* Default to 64 byte max packet size */
|
|
dev->maxpacketsize = PACKET_SIZE_64;
|
|
dev->epmaxpacketin[0] = 64;
|
|
dev->epmaxpacketout[0] = 64;
|
|
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
|
|
|
|
if (err < 0)
|
|
{
|
|
dbg("usb_new_device: usb_get_descriptor() failed\r\n");
|
|
driver_mem_free(tmpbuf);
|
|
return 1;
|
|
}
|
|
dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0;
|
|
|
|
/* find the port number we're at */
|
|
if (parent)
|
|
{
|
|
int j;
|
|
for (j = 0; j < parent->maxchild; j++)
|
|
{
|
|
if (parent->children[j] == dev)
|
|
{
|
|
port = j;
|
|
break;
|
|
}
|
|
}
|
|
dbg("port = %d\r\n", port);
|
|
|
|
if (port < 0)
|
|
{
|
|
dbg("usb_new_device: cannot locate device's port.\r\n");
|
|
driver_mem_free(tmpbuf);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* reset the port for the second time */
|
|
err = hub_port_reset(dev->parent, port, &portstatus);
|
|
if (err < 0)
|
|
{
|
|
dbg("\r\nCouldn't reset port %d\r\n", port);
|
|
driver_mem_free(tmpbuf);
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|
|
dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
|
|
dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
|
|
|
|
switch (dev->descriptor.bMaxPacketSize0)
|
|
{
|
|
case 8: dev->maxpacketsize = PACKET_SIZE_8; break;
|
|
case 16: dev->maxpacketsize = PACKET_SIZE_16; break;
|
|
case 32: dev->maxpacketsize = PACKET_SIZE_32; break;
|
|
case 64: dev->maxpacketsize = PACKET_SIZE_64; break;
|
|
}
|
|
|
|
dev->devnum = addr;
|
|
err = usb_set_address(dev); /* set address */
|
|
|
|
if (err < 0)
|
|
{
|
|
dbg("\r\nUSB device not accepting new address (error=%lX)\r\n", dev->status);
|
|
driver_mem_free(tmpbuf);
|
|
|
|
return 1;
|
|
}
|
|
|
|
wait(10); /* Let the SET_ADDRESS settle */
|
|
tmp = sizeof(dev->descriptor);
|
|
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, sizeof(dev->descriptor));
|
|
if (err < tmp)
|
|
{
|
|
if (err < 0)
|
|
{
|
|
dbg("unable to get device descriptor (error=%d)\r\n", err);
|
|
}
|
|
else
|
|
{
|
|
dbg("USB device descriptor short read (expected %i, got %i)\r\n", tmp, err);
|
|
}
|
|
driver_mem_free(tmpbuf);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* correct values */
|
|
dev->descriptor.bcdUSB = swpw(dev->descriptor.bcdUSB);
|
|
dev->descriptor.idVendor = swpw(dev->descriptor.idVendor);
|
|
dev->descriptor.idProduct = swpw(dev->descriptor.idProduct);
|
|
dev->descriptor.bcdDevice = swpw(dev->descriptor.bcdDevice);
|
|
|
|
/* only support for one config for now */
|
|
usb_get_configuration_no(dev, &tmpbuf[0], 0);
|
|
usb_parse_config(dev, &tmpbuf[0], 0);
|
|
usb_set_maxpacket(dev);
|
|
|
|
/* we set the default configuration here */
|
|
if (usb_set_configuration(dev, dev->config.bConfigurationValue))
|
|
{
|
|
dbg("failed to set default configuration len %d, status %lX\r\n", dev->act_len, dev->status);
|
|
driver_mem_free(tmpbuf);
|
|
return -1;
|
|
}
|
|
dbg("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\r\n",
|
|
dev->descriptor.iManufacturer, dev->descriptor.iProduct,
|
|
dev->descriptor.iSerialNumber);
|
|
|
|
memset(dev->mf, 0, sizeof(dev->mf));
|
|
memset(dev->prod, 0, sizeof(dev->prod));
|
|
memset(dev->serial, 0, sizeof(dev->serial));
|
|
|
|
if (dev->descriptor.iManufacturer)
|
|
{
|
|
usb_string(dev, dev->descriptor.iManufacturer, dev->mf, sizeof(dev->mf));
|
|
}
|
|
if (dev->descriptor.iProduct)
|
|
{
|
|
usb_string(dev, dev->descriptor.iProduct, dev->prod, sizeof(dev->prod));
|
|
}
|
|
if (dev->descriptor.iSerialNumber)
|
|
{
|
|
usb_string(dev, dev->descriptor.iSerialNumber, dev->serial, sizeof(dev->serial));
|
|
}
|
|
dbg("Manufacturer %s\r\n", dev->mf);
|
|
dbg("Product %s\r\n", dev->prod);
|
|
dbg("SerialNumber %s\r\n", dev->serial);
|
|
|
|
/* now probe if the device is a hub */
|
|
usb_hub_probe(dev, 0);
|
|
driver_mem_free(tmpbuf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* build device Tree
|
|
*/
|
|
void usb_scan_devices(void *priv)
|
|
{
|
|
int i;
|
|
struct usb_device *dev;
|
|
|
|
/* first make all devices unknown */
|
|
for (i = 0; i < USB_MAX_DEVICE; i++)
|
|
{
|
|
memset(&usb_dev[(bus_index * USB_MAX_DEVICE) + i], 0, sizeof(struct usb_device));
|
|
usb_dev[(bus_index * USB_MAX_DEVICE) + i].devnum = -1;
|
|
}
|
|
dev_index[bus_index] = 0;
|
|
|
|
/*
|
|
* device 0 is always present (root hub, so let it analyze)
|
|
*/
|
|
dev = usb_alloc_new_device(bus_index, priv);
|
|
if (usb_new_device(dev))
|
|
{
|
|
xprintf("No USB Device found\r\n");
|
|
if (dev != NULL)
|
|
{
|
|
dev_index[bus_index]--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
xprintf("%d USB Device(s) found\r\n", dev_index[bus_index]);
|
|
}
|
|
|
|
/* insert "driver" if possible */
|
|
if (drv_usb_kbd_init() < 0)
|
|
{
|
|
xprintf("No USB keyboard found\r\n");
|
|
}
|
|
else
|
|
{
|
|
xprintf("USB HID keyboard driver installed\r\n");
|
|
}
|
|
|
|
if (drv_usb_mouse_init() < 0)
|
|
{
|
|
xprintf("No USB mouse found\r\n");
|
|
}
|
|
else
|
|
{
|
|
xprintf("USB HID mouse driver installed\r\n");
|
|
}
|
|
xprintf("Scan end\r\n");
|
|
}
|
|
|