forked from kakaroto/PSFreedom
/
psfreedom_devices.c
511 lines (454 loc) · 15.5 KB
/
psfreedom_devices.c
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/*
* psfreedom_devices.c -- PS3 Jailbreak exploit Gadget Driver
*
* Copyright (C) Youness Alaoui (KaKaRoTo)
*
* This software is distributed under the terms of the GNU General Public
* License ("GPL") version 3, as published by the Free Software Foundation.
*
* This code is based in part on:
*
* PSGroove
* USB MIDI Gadget Driver, Copyright (C) 2006 Thumtronics Pty Ltd.
* Gadget Zero driver, Copyright (C) 2003-2004 David Brownell.
* USB Audio driver, Copyright (C) 2002 by Takashi Iwai.
* USB MIDI driver, Copyright (C) 2002-2005 Clemens Ladisch.
*
*/
#include "psfreedom_devices.h"
static void jig_response_send (struct psfreedom_device *dev,
struct usb_request *req);
static void jig_response_complete(struct usb_ep *ep, struct usb_request *req)
{
struct psfreedom_device *dev = ep->driver_data;
int status = req->status;
unsigned long flags;
spin_lock_irqsave (&dev->lock, flags);
DBG (dev, "Jig response sent (status %d). Sent data so far : %d + %d\n",
status, dev->response_len, req->length);
switch (status) {
case 0: /* normal completion */
if (ep == dev->in_ep) {
/* our transmit completed.
see if there's more to go.
hub_transmit eats req, don't queue it again. */
dev->response_len += req->length;
if (dev->response_len < 64) {
jig_response_send (dev, req);
} else {
dev->status = DEVICE5_READY;
SET_TIMER (150);
}
spin_unlock_irqrestore (&dev->lock, flags);
return;
}
break;
/* this endpoint is normally active while we're configured */
case -ECONNABORTED: /* hardware forced ep reset */
case -ESHUTDOWN: /* disconnect from host */
VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
req->actual, req->length);
case -ECONNRESET: /* request dequeued */
hub_interrupt_queued = 0;
spin_unlock_irqrestore (&dev->lock, flags);
return;
case -EOVERFLOW: /* buffer overrun on read means that
* we didn't provide a big enough
* buffer.
*/
default:
DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
status, req->actual, req->length);
break;
case -EREMOTEIO: /* short read */
break;
}
status = usb_ep_queue(ep, req, GFP_ATOMIC);
if (status) {
ERROR(dev, "kill %s: resubmit %d bytes --> %d\n",
ep->name, req->length, status);
usb_ep_set_halt(ep);
/* FIXME recover later ... somehow */
}
spin_unlock_irqrestore (&dev->lock, flags);
}
/* Send the challenge response */
static void jig_response_send (struct psfreedom_device *dev,
struct usb_request *req)
{
struct usb_ep *ep = dev->in_ep;
if (!ep)
return;
if (!req)
req = alloc_ep_req(ep, 8);
if (!req) {
ERROR(dev, "hub_interrupt_transmit: alloc_ep_request failed\n");
return;
}
req->complete = jig_response_complete;
memcpy (req->buf, jig_response + dev->response_len, 8);
req->length = 8;
DBG (dev, "transmitting response. Sent so far %d\n", dev->response_len);
DBG (dev, "Sending %X %X %X %X %X %X %X %X\n",
((char *)req->buf)[0], ((char *)req->buf)[1],
((char *)req->buf)[2], ((char *)req->buf)[3],
((char *)req->buf)[4], ((char *)req->buf)[5],
((char *)req->buf)[6], ((char *)req->buf)[7]);
usb_ep_queue(ep, req, GFP_ATOMIC);
}
/* Received challenge data */
static void jig_interrupt_complete(struct usb_ep *ep, struct usb_request *req)
{
struct psfreedom_device *dev = ep->driver_data;
int status = req->status;
unsigned long flags;
spin_lock_irqsave (&dev->lock, flags);
DBG (dev, "******Out interrupt complete (status %d) : length %d, actual %d\n",
status, req->length, req->actual);
switch (status) {
case 0: /* normal completion */
if (ep == dev->out_ep) {
/* our transmit completed */
/* TODO handle data */
dev->challenge_len += req->actual;
DBG (dev, "******Challenge length : %d\n", dev->challenge_len);
if (dev->challenge_len >= 64) {
dev->status = DEVICE5_CHALLENGED;
SET_TIMER (450);
}
}
break;
/* this endpoint is normally active while we're configured */
case -ECONNABORTED: /* hardware forced ep reset */
case -ECONNRESET: /* request dequeued */
case -ESHUTDOWN: /* disconnect from host */
VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status,
req->actual, req->length);
spin_unlock_irqrestore (&dev->lock, flags);
return;
case -EOVERFLOW: /* buffer overrun on read means that
* we didn't provide a big enough
* buffer.
*/
default:
DBG(dev, "%s complete --> %d, %d/%d\n", ep->name,
status, req->actual, req->length);
break;
case -EREMOTEIO: /* short read */
break;
}
status = usb_ep_queue(ep, req, GFP_ATOMIC);
if (status) {
ERROR(dev, "kill %s: resubmit %d bytes --> %d\n",
ep->name, req->length, status);
usb_ep_set_halt(ep);
/* FIXME recover later ... somehow */
}
spin_unlock_irqrestore (&dev->lock, flags);
}
/* queue a request for receiving the challenge on endpoint 2 */
static void jig_interrupt_start (struct psfreedom_device *dev)
{
struct usb_ep *ep = dev->out_ep;
struct usb_request *req = NULL;
if (!ep)
return;
req = alloc_ep_req(ep, USB_BUFSIZ);
if (!req) {
ERROR(dev, "out_interrupt_transmit: alloc_ep_request failed\n");
return;
}
req->complete = jig_interrupt_complete;
req->length = 8;
usb_ep_queue(ep, req, GFP_ATOMIC);
}
static int set_jig_config(struct psfreedom_device *dev)
{
int err = 0;
err = usb_ep_enable(dev->out_ep, &jig_out_endpoint_desc);
if (err) {
ERROR(dev, "can't start %s: %d\n", dev->out_ep->name, err);
goto fail;
}
dev->out_ep->driver_data = dev;
DBG (dev, "Enabled BULK OUT endpoint\n");
err = usb_ep_enable(dev->in_ep, &jig_in_endpoint_desc);
if (err) {
ERROR(dev, "can't start %s: %d\n", dev->in_ep->name, err);
goto fail;
}
dev->in_ep->driver_data = dev;
DBG (dev, "Enabled BULK IN endpoint\n");
jig_interrupt_start (dev);
fail:
/* caller is responsible for cleanup on error */
return err;
}
static void
jig_reset_config(struct psfreedom_device *dev)
{
DBG(dev, "JIG reset config\n");
usb_ep_disable(dev->out_ep);
usb_ep_disable(dev->in_ep);
}
/* change our operational config. this code must agree with the code
* that returns config descriptors, and altsetting code.
*
* it's also responsible for power management interactions. some
* configurations might not work with our current power sources.
*
* note that some device controller hardware will constrain what this
* code can do, perhaps by disallowing more than one configuration or
* by limiting configuration choices (like the pxa2xx).
*/
static int
jig_set_config(struct psfreedom_device *dev, unsigned number)
{
int result = 0;
struct usb_gadget *gadget = dev->gadget;
jig_reset_config(dev);
result = set_jig_config(dev);
if (!result && !dev->in_ep) {
result = -ENODEV;
}
if (result) {
jig_reset_config(dev);
} else {
char *speed;
switch (gadget->speed) {
case USB_SPEED_LOW: speed = "low"; break;
case USB_SPEED_FULL: speed = "full"; break;
case USB_SPEED_HIGH: speed = "high"; break;
default: speed = "?"; break;
}
INFO(dev, "%s speed\n", speed);
}
return result;
}
/*
* The setup() callback implements all the ep0 functionality that's
* not handled lower down, in hardware or the hardware driver (like
* device and endpoint feature flags, and their status). It's all
* housekeeping for the gadget function we're implementing. Most of
* the work is in config-specific setup.
*/
static int devices_setup(struct usb_gadget *gadget,
const struct usb_ctrlrequest *ctrl, u16 request,
u16 w_index, u16 w_value, u16 w_length)
{
struct psfreedom_device *dev = get_gadget_data(gadget);
struct usb_request *req = dev->req;
int value = -EOPNOTSUPP;
/* usually this stores reply data in the pre-allocated ep0 buffer,
* but config change events will reconfigure hardware.
*/
switch (ctrl->bRequest) {
case USB_REQ_GET_DESCRIPTOR:
if ((ctrl->bRequestType & USB_DIR_IN) == 0) {
goto unknown;
}
switch (w_value >> 8) {
case USB_DT_DEVICE:
switch (dev->current_port) {
case 1:
value = min(w_length, (u16) sizeof(port1_device_desc));
memcpy(req->buf, port1_device_desc, value);
break;
case 2:
value = min(w_length, (u16) sizeof(port2_device_desc));
memcpy(req->buf, port2_device_desc, value);
break;
case 3:
value = min(w_length, (u16) sizeof(port3_device_desc));
memcpy(req->buf, port3_device_desc, value);
break;
case 4:
value = min(w_length, (u16) sizeof(port4_device_desc));
memcpy(req->buf, port4_device_desc, value);
break;
case 5:
value = min(w_length, (u16) sizeof(port5_device_desc));
memcpy(req->buf, port5_device_desc, value);
break;
case 6:
value = min(w_length, (u16) sizeof(port6_device_desc));
memcpy(req->buf, port6_device_desc, value);
break;
default:
value = -EINVAL;
break;
}
break;
case USB_DT_CONFIG:
value = 0;
switch (dev->current_port) {
case 1:
if ((w_value & 0xff) < 4) {
if (w_length == 8) {
value = sizeof(port1_short_config_desc);
memcpy(req->buf, port1_short_config_desc, value);
} else {
value = dev->port1_config_desc_size;
memcpy(req->buf, dev->port1_config_desc, value);
}
if ((w_value & 0xff) == 3 && w_length > 8) {
dev->status = DEVICE1_READY;
SET_TIMER (100);
}
}
break;
case 2:
value = sizeof(port2_config_desc);
memcpy(req->buf, port2_config_desc, value);
if (w_length > 8) {
dev->status = DEVICE2_READY;
SET_TIMER (150);
}
break;
case 3:
value = sizeof(port3_config_desc);
memcpy(req->buf, port3_config_desc, value);
if ((w_value & 0xff) == 1 && w_length > 8) {
dev->status = DEVICE3_READY;
SET_TIMER (80);
}
break;
case 4:
if ((w_value & 0xff) == 0) {
value = sizeof(port4_config_desc_1);
memcpy(req->buf, port4_config_desc_1, value);
} else if ((w_value & 0xff) == 1) {
if (w_length == 8) {
value = sizeof(port4_short_config_desc_2);
memcpy(req->buf, port4_short_config_desc_2, value);
} else {
value = sizeof(port4_config_desc_2);
memcpy(req->buf, port4_config_desc_2, value);
}
} else if ((w_value & 0xff) == 2) {
value = sizeof(port4_config_desc_3);
memcpy(req->buf, port4_config_desc_3, value);
if (w_length > 8) {
dev->status = DEVICE4_READY;
SET_TIMER (180);
}
}
break;
case 5:
value = sizeof(port5_config_desc);
memcpy(req->buf, port5_config_desc, value);
break;
case 6:
value = sizeof(port6_config_desc);
memcpy(req->buf, port6_config_desc, value);
break;
default:
value = -EINVAL;
break;
}
if (value >= 0)
value = min(w_length, (u16)value);
break;
case USB_DT_STRING:
value = 0;
break;
}
break;
case USB_REQ_SET_CONFIGURATION:
if (dev->current_port == 5) {
DBG (dev, "SET CONFIGURATION ON JIG\n");
jig_set_config(dev, 0);
}
value = 0;
break;
case USB_REQ_GET_CONFIGURATION:
case USB_REQ_GET_STATUS:
case USB_REQ_SET_INTERFACE:
if (dev->current_port == 5)
DBG (dev, "SET INTERFACE ON JIG\n");
value = 0;
break;
case USB_REQ_GET_INTERFACE:
if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)) {
goto unknown;
}
*(u8 *)req->buf = 0;
value = min(w_length, (u16)1);
break;
case 0xAA:
INFO (dev, "JAILBROKEN!!! DONE!!!!!!!!!\n");
dev->status = DEVICE6_READY;
SET_TIMER (0);
value = 0;
break;
default:
unknown:
DBG(dev, "unknown control req%02x.%02x v%04x i%04x l%d\n",
ctrl->bRequestType, ctrl->bRequest,
w_value, w_index, w_length);
}
/* device either stalls (value < 0) or reports success */
return value;
}
static void devices_disconnect (struct usb_gadget *gadget)
{
struct psfreedom_device *dev = get_gadget_data (gadget);
jig_reset_config (dev);
}
static int __init devices_bind(struct usb_gadget *gadget,
struct psfreedom_device *dev)
{
struct usb_ep *out_ep;
struct usb_ep *in_ep;
gadget_for_each_ep (out_ep, gadget) {
if (0 == strcmp (out_ep->name,
psfreedom_get_endpoint_name (&jig_out_endpoint_desc)))
break;
}
if (!out_ep) {
ERROR (dev, "%s: can't find %s on %s\n",
psfreedom_get_endpoint_name (&jig_out_endpoint_desc),
shortname, gadget->name);
return -ENODEV;
}
out_ep->driver_data = out_ep; /* claim */
gadget_for_each_ep (in_ep, gadget) {
if (0 == strcmp (in_ep->name,
psfreedom_get_endpoint_name (&jig_in_endpoint_desc)))
break;
}
if (!in_ep) {
ERROR (dev, "%s: can't find %s on %s\n",
psfreedom_get_endpoint_name (&jig_in_endpoint_desc),
shortname, gadget->name);
return -ENODEV;
}
in_ep->driver_data = in_ep; /* claim */
/* ok, we made sense of the hardware ... */
dev->in_ep = in_ep;
dev->out_ep = out_ep;
/* If the machine specific code changed our descriptors,
change the ones we'll send too */
memcpy (port5_config_desc + USB_DT_CONFIG_SIZE + USB_DT_INTERFACE_SIZE,
&jig_out_endpoint_desc,
USB_DT_ENDPOINT_SIZE);
memcpy (port5_config_desc + USB_DT_CONFIG_SIZE + \
USB_DT_INTERFACE_SIZE + USB_DT_ENDPOINT_SIZE,
&jig_in_endpoint_desc,
USB_DT_ENDPOINT_SIZE);
INFO(dev, "using %s, EP IN %s (0x%X)\n", gadget->name, in_ep->name,
jig_in_endpoint_desc.bEndpointAddress);
INFO(dev, "using %s, EP OUT %s (0x%X)\n", gadget->name, out_ep->name,
jig_out_endpoint_desc.bEndpointAddress);
/* the max packet size of all the devices must be the same as the ep0 max
packet size, otherwise it won't work */
((struct usb_device_descriptor *)port1_device_desc)->bMaxPacketSize0 = \
((struct usb_device_descriptor *)port2_device_desc)->bMaxPacketSize0 = \
((struct usb_device_descriptor *)port3_device_desc)->bMaxPacketSize0 = \
((struct usb_device_descriptor *)port4_device_desc)->bMaxPacketSize0 = \
((struct usb_device_descriptor *)port5_device_desc)->bMaxPacketSize0 = \
((struct usb_device_descriptor *)port6_device_desc)->bMaxPacketSize0 = \
gadget->ep0->maxpacket;
VDBG(dev, "devices_bind finished ok\n");
return 0;
}