linux/drivers/uwb/i1480/dfu/usb.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

477 lines
13 KiB
C

/*
* Intel Wireless UWB Link 1480
* USB SKU firmware upload implementation
*
* Copyright (C) 2005-2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*
* This driver will prepare the i1480 device to behave as a real
* Wireless USB HWA adaptor by uploading the firmware.
*
* When the device is connected or driver is loaded, i1480_usb_probe()
* is called--this will allocate and initialize the device structure,
* fill in the pointers to the common functions (read, write,
* wait_init_done and cmd for HWA command execution) and once that is
* done, call the common firmware uploading routine. Then clean up and
* return -ENODEV, as we don't attach to the device.
*
* The rest are the basic ops we implement that the fw upload code
* uses to do its job. All the ops in the common code are i1480->NAME,
* the functions are i1480_usb_NAME().
*/
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
#include <linux/usb/wusb-wa.h>
#include "i1480-dfu.h"
struct i1480_usb {
struct i1480 i1480;
struct usb_device *usb_dev;
struct usb_interface *usb_iface;
struct urb *neep_urb; /* URB for reading from EP1 */
};
static
void i1480_usb_init(struct i1480_usb *i1480_usb)
{
i1480_init(&i1480_usb->i1480);
}
static
int i1480_usb_create(struct i1480_usb *i1480_usb, struct usb_interface *iface)
{
struct usb_device *usb_dev = interface_to_usbdev(iface);
int result = -ENOMEM;
i1480_usb->usb_dev = usb_get_dev(usb_dev); /* bind the USB device */
i1480_usb->usb_iface = usb_get_intf(iface);
usb_set_intfdata(iface, i1480_usb); /* Bind the driver to iface0 */
i1480_usb->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
if (i1480_usb->neep_urb == NULL)
goto error;
return 0;
error:
usb_set_intfdata(iface, NULL);
usb_put_intf(iface);
usb_put_dev(usb_dev);
return result;
}
static
void i1480_usb_destroy(struct i1480_usb *i1480_usb)
{
usb_kill_urb(i1480_usb->neep_urb);
usb_free_urb(i1480_usb->neep_urb);
usb_set_intfdata(i1480_usb->usb_iface, NULL);
usb_put_intf(i1480_usb->usb_iface);
usb_put_dev(i1480_usb->usb_dev);
}
/**
* Write a buffer to a memory address in the i1480 device
*
* @i1480: i1480 instance
* @memory_address:
* Address where to write the data buffer to.
* @buffer: Buffer to the data
* @size: Size of the buffer [has to be < 512].
* @returns: 0 if ok, < 0 errno code on error.
*
* Data buffers to USB cannot be on the stack or in vmalloc'ed areas,
* so we copy it to the local i1480 buffer before proceeding. In any
* case, we have a max size we can send, soooo.
*/
static
int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
const void *buffer, size_t size)
{
int result = 0;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
size_t buffer_size, itr = 0;
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
while (size > 0) {
buffer_size = size < i1480->buf_size ? size : i1480->buf_size;
memcpy(i1480->cmd_buf, buffer + itr, buffer_size);
result = usb_control_msg(
i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
0xf0, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
memory_address, (memory_address >> 16),
i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
if (result < 0)
break;
itr += result;
memory_address += result;
size -= result;
}
return result;
}
/**
* Read a block [max size 512] of the device's memory to @i1480's buffer.
*
* @i1480: i1480 instance
* @memory_address:
* Address where to read from.
* @size: Size to read. Smaller than or equal to 512.
* @returns: >= 0 number of bytes written if ok, < 0 errno code on error.
*
* NOTE: if the memory address or block is incorrect, you might get a
* stall or a different memory read. Caller has to verify the
* memory address and size passed back in the @neh structure.
*/
static
int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
{
ssize_t result = 0, bytes = 0;
size_t itr, read_size = i1480->buf_size;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
BUG_ON(size > i1480->buf_size);
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
BUG_ON(read_size > 512);
if (addr >= 0x8000d200 && addr < 0x8000d400) /* Yeah, HW quirk */
read_size = 4;
for (itr = 0; itr < size; itr += read_size) {
size_t itr_addr = addr + itr;
size_t itr_size = min(read_size, size - itr);
result = usb_control_msg(
i1480_usb->usb_dev, usb_rcvctrlpipe(i1480_usb->usb_dev, 0),
0xf0, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
itr_addr, (itr_addr >> 16),
i1480->cmd_buf + itr, itr_size,
100 /* FIXME: arbitrary */);
if (result < 0) {
dev_err(i1480->dev, "%s: USB read error: %zd\n",
__func__, result);
goto out;
}
if (result != itr_size) {
result = -EIO;
dev_err(i1480->dev,
"%s: partial read got only %zu bytes vs %zu expected\n",
__func__, result, itr_size);
goto out;
}
bytes += result;
}
result = bytes;
out:
return result;
}
/**
* Callback for reads on the notification/event endpoint
*
* Just enables the completion read handler.
*/
static
void i1480_usb_neep_cb(struct urb *urb)
{
struct i1480 *i1480 = urb->context;
struct device *dev = i1480->dev;
switch (urb->status) {
case 0:
break;
case -ECONNRESET: /* Not an error, but a controlled situation; */
case -ENOENT: /* (we killed the URB)...so, no broadcast */
dev_dbg(dev, "NEEP: reset/noent %d\n", urb->status);
break;
case -ESHUTDOWN: /* going away! */
dev_dbg(dev, "NEEP: down %d\n", urb->status);
break;
default:
dev_err(dev, "NEEP: unknown status %d\n", urb->status);
break;
}
i1480->evt_result = urb->actual_length;
complete(&i1480->evt_complete);
return;
}
/**
* Wait for the MAC FW to initialize
*
* MAC FW sends a 0xfd/0101/00 notification to EP1 when done
* initializing. Get that notification into i1480->evt_buf; upper layer
* will verify it.
*
* Set i1480->evt_result with the result of getting the event or its
* size (if successful).
*
* Delivers the data directly to i1480->evt_buf
*/
static
int i1480_usb_wait_init_done(struct i1480 *i1480)
{
int result;
struct device *dev = i1480->dev;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
struct usb_endpoint_descriptor *epd;
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(i1480_usb->neep_urb, i1480_usb->usb_dev,
usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
i1480->evt_buf, i1480->buf_size,
i1480_usb_neep_cb, i1480, epd->bInterval);
result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
if (result < 0) {
dev_err(dev, "init done: cannot submit NEEP read: %d\n",
result);
goto error_submit;
}
/* Wait for the USB callback to get the data */
result = wait_for_completion_interruptible_timeout(
&i1480->evt_complete, HZ);
if (result <= 0) {
result = result == 0 ? -ETIMEDOUT : result;
goto error_wait;
}
usb_kill_urb(i1480_usb->neep_urb);
return 0;
error_wait:
usb_kill_urb(i1480_usb->neep_urb);
error_submit:
i1480->evt_result = result;
return result;
}
/**
* Generic function for issuing commands to the i1480
*
* @i1480: i1480 instance
* @cmd_name: Name of the command (for error messages)
* @cmd: Pointer to command buffer
* @cmd_size: Size of the command buffer
* @reply: Buffer for the reply event
* @reply_size: Expected size back (including RCEB); the reply buffer
* is assumed to be as big as this.
* @returns: >= 0 size of the returned event data if ok,
* < 0 errno code on error.
*
* Arms the NE handle, issues the command to the device and checks the
* basics of the reply event.
*/
static
int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size)
{
int result;
struct device *dev = i1480->dev;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
struct usb_endpoint_descriptor *epd;
struct uwb_rccb *cmd = i1480->cmd_buf;
u8 iface_no;
/* Post a read on the notification & event endpoint */
iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(
i1480_usb->neep_urb, i1480_usb->usb_dev,
usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
i1480->evt_buf, i1480->buf_size,
i1480_usb_neep_cb, i1480, epd->bInterval);
result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
if (result < 0) {
dev_err(dev, "%s: cannot submit NEEP read: %d\n",
cmd_name, result);
goto error_submit_ep1;
}
/* Now post the command on EP0 */
result = usb_control_msg(
i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
WA_EXEC_RC_CMD,
USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS,
0, iface_no,
cmd, cmd_size,
100 /* FIXME: this is totally arbitrary */);
if (result < 0) {
dev_err(dev, "%s: control request failed: %d\n",
cmd_name, result);
goto error_submit_ep0;
}
return result;
error_submit_ep0:
usb_kill_urb(i1480_usb->neep_urb);
error_submit_ep1:
return result;
}
/*
* Probe a i1480 device for uploading firmware.
*
* We attach only to interface #0, which is the radio control interface.
*/
static
int i1480_usb_probe(struct usb_interface *iface, const struct usb_device_id *id)
{
struct i1480_usb *i1480_usb;
struct i1480 *i1480;
struct device *dev = &iface->dev;
int result;
result = -ENODEV;
if (iface->cur_altsetting->desc.bInterfaceNumber != 0) {
dev_dbg(dev, "not attaching to iface %d\n",
iface->cur_altsetting->desc.bInterfaceNumber);
goto error;
}
if (iface->num_altsetting > 1
&& interface_to_usbdev(iface)->descriptor.idProduct == 0xbabe) {
/* Need altsetting #1 [HW QUIRK] or EP1 won't work */
result = usb_set_interface(interface_to_usbdev(iface), 0, 1);
if (result < 0)
dev_warn(dev,
"can't set altsetting 1 on iface 0: %d\n",
result);
}
result = -ENOMEM;
i1480_usb = kzalloc(sizeof(*i1480_usb), GFP_KERNEL);
if (i1480_usb == NULL) {
dev_err(dev, "Unable to allocate instance\n");
goto error;
}
i1480_usb_init(i1480_usb);
i1480 = &i1480_usb->i1480;
i1480->buf_size = 512;
i1480->cmd_buf = kmalloc(2 * i1480->buf_size, GFP_KERNEL);
if (i1480->cmd_buf == NULL) {
dev_err(dev, "Cannot allocate transfer buffers\n");
result = -ENOMEM;
goto error_buf_alloc;
}
i1480->evt_buf = i1480->cmd_buf + i1480->buf_size;
result = i1480_usb_create(i1480_usb, iface);
if (result < 0) {
dev_err(dev, "Cannot create instance: %d\n", result);
goto error_create;
}
/* setup the fops and upload the firmware */
i1480->pre_fw_name = "i1480-pre-phy-0.0.bin";
i1480->mac_fw_name = "i1480-usb-0.0.bin";
i1480->mac_fw_name_deprecate = "ptc-0.0.bin";
i1480->phy_fw_name = "i1480-phy-0.0.bin";
i1480->dev = &iface->dev;
i1480->write = i1480_usb_write;
i1480->read = i1480_usb_read;
i1480->rc_setup = NULL;
i1480->wait_init_done = i1480_usb_wait_init_done;
i1480->cmd = i1480_usb_cmd;
result = i1480_fw_upload(&i1480_usb->i1480); /* the real thing */
if (result >= 0) {
usb_reset_device(i1480_usb->usb_dev);
result = -ENODEV; /* we don't want to bind to the iface */
}
i1480_usb_destroy(i1480_usb);
error_create:
kfree(i1480->cmd_buf);
error_buf_alloc:
kfree(i1480_usb);
error:
return result;
}
MODULE_FIRMWARE("i1480-pre-phy-0.0.bin");
MODULE_FIRMWARE("i1480-usb-0.0.bin");
MODULE_FIRMWARE("i1480-phy-0.0.bin");
#define i1480_USB_DEV(v, p) \
{ \
.match_flags = USB_DEVICE_ID_MATCH_DEVICE \
| USB_DEVICE_ID_MATCH_DEV_INFO \
| USB_DEVICE_ID_MATCH_INT_INFO, \
.idVendor = (v), \
.idProduct = (p), \
.bDeviceClass = 0xff, \
.bDeviceSubClass = 0xff, \
.bDeviceProtocol = 0xff, \
.bInterfaceClass = 0xff, \
.bInterfaceSubClass = 0xff, \
.bInterfaceProtocol = 0xff, \
}
/** USB device ID's that we handle */
static const struct usb_device_id i1480_usb_id_table[] = {
i1480_USB_DEV(0x8086, 0xdf3b),
i1480_USB_DEV(0x15a9, 0x0005),
i1480_USB_DEV(0x07d1, 0x3802),
i1480_USB_DEV(0x050d, 0x305a),
i1480_USB_DEV(0x3495, 0x3007),
{},
};
MODULE_DEVICE_TABLE(usb, i1480_usb_id_table);
static struct usb_driver i1480_dfu_driver = {
.name = "i1480-dfu-usb",
.id_table = i1480_usb_id_table,
.probe = i1480_usb_probe,
.disconnect = NULL,
};
/*
* Initialize the i1480 DFU driver.
*
* We also need to register our function for guessing event sizes.
*/
static int __init i1480_dfu_driver_init(void)
{
return usb_register(&i1480_dfu_driver);
}
module_init(i1480_dfu_driver_init);
static void __exit i1480_dfu_driver_exit(void)
{
usb_deregister(&i1480_dfu_driver);
}
module_exit(i1480_dfu_driver_exit);
MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
MODULE_DESCRIPTION("Intel Wireless UWB Link 1480 firmware uploader for USB");
MODULE_LICENSE("GPL");