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uwb: add the i1480 DFU driver 

Add the driver for downloading the firmware to an Intel i1480 device.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
This commit is contained in:
Inaky Perez-Gonzalez 2008-09-17 16:34:20 +01:00 committed by David Vrabel
parent 3b0c5a3818
commit 1ba47da527
10 changed files with 1898 additions and 0 deletions
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12
drivers/uwb/Kconfig
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@ -64,4 +64,16 @@ config UWB_WLP
This is a common library for drivers that implement
networking over UWB.
config UWB_I1480U
tristate "Support for Intel Wireless UWB Link 1480 HWA"
depends on UWB_HWA
select FW_LOADER
help
This driver enables support for the i1480 when connected via
USB. It consists of a firmware uploader that will enable it
to behave as an HWA device.
To compile this driver select Y (built in) or M (module). It
is safe to select any even if you do not have the hardware.
endif # UWB

1
drivers/uwb/Makefile
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@ -2,6 +2,7 @@ obj-$(CONFIG_UWB) += uwb.o
obj-$(CONFIG_UWB_WLP) += wlp/
obj-$(CONFIG_UWB_WHCI) += umc.o whci.o whc-rc.o
obj-$(CONFIG_UWB_HWA) += hwa-rc.o
obj-$(CONFIG_UWB_I1480U) += i1480/
uwb-objs := \
address.o \

1
drivers/uwb/i1480/Makefile Normal file
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@ -0,0 +1 @@
obj-$(CONFIG_UWB_I1480U) += dfu/ i1480-est.o

9
drivers/uwb/i1480/dfu/Makefile Normal file
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@ -0,0 +1,9 @@
obj-$(CONFIG_UWB_I1480U) += i1480-dfu-usb.o
i1480-dfu-usb-objs := \
dfu.o \
mac.o \
phy.o \
usb.o

281
drivers/uwb/i1480/dfu/dfu.c Normal file
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@ -0,0 +1,281 @@
/*
* Intel Wireless UWB Link 1480
* Main driver
*
* 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.
*
*
* Common code for firmware upload used by the USB and PCI version;
* i1480_fw_upload() takes a device descriptor and uses the function
* pointers it provides to upload firmware and prepare the PHY.
*
* As well, provides common functions used by the rest of the code.
*/
#include "i1480-dfu.h"
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/uwb.h>
#include <linux/random.h>
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/** @return 0 if If @evt is a valid reply event; otherwise complain */
int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb,
const char *cmd, u8 context,
unsigned expected_type, unsigned expected_event)
{
int result = 0;
struct device *dev = i1480->dev;
if (rceb->bEventContext != context) {
dev_err(dev, "%s: "
"unexpected context id 0x%02x (expected 0x%02x)\n",
cmd, rceb->bEventContext, context);
result = -EINVAL;
}
if (rceb->bEventType != expected_type) {
dev_err(dev, "%s: "
"unexpected event type 0x%02x (expected 0x%02x)\n",
cmd, rceb->bEventType, expected_type);
result = -EINVAL;
}
if (le16_to_cpu(rceb->wEvent) != expected_event) {
dev_err(dev, "%s: "
"unexpected event 0x%04x (expected 0x%04x)\n",
cmd, le16_to_cpu(rceb->wEvent), expected_event);
result = -EINVAL;
}
return result;
}
EXPORT_SYMBOL_GPL(i1480_rceb_check);
/**
* Execute a Radio Control Command
*
* Command data has to be in i1480->cmd_buf.
*
* @returns size of the reply data filled in i1480->evt_buf or < 0 errno
* code on error.
*/
ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
size_t reply_size)
{
ssize_t result;
struct uwb_rceb *reply = i1480->evt_buf;
struct uwb_rccb *cmd = i1480->cmd_buf;
u16 expected_event = reply->wEvent;
u8 expected_type = reply->bEventType;
u8 context;
d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
do {
get_random_bytes(&context, 1);
} while (context == 0x00 || context == 0xff);
cmd->bCommandContext = context;
result = i1480->cmd(i1480, cmd_name, cmd_size);
if (result < 0)
goto error;
/* wait for the callback to report a event was received */
result = wait_for_completion_interruptible_timeout(
&i1480->evt_complete, HZ);
if (result == 0) {
result = -ETIMEDOUT;
goto error;
}
if (result < 0)
goto error;
result = i1480->evt_result;
if (result < 0) {
dev_err(i1480->dev, "%s: command reply reception failed: %zd\n",
cmd_name, result);
goto error;
}
if (result != reply_size) {
dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
cmd_name, result, reply_size);
result = -EINVAL;
goto error;
}
/* Verify we got the right event in response */
result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
expected_type, expected_event);
error:
d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n",
i1480, cmd_name, cmd_size, result);
return result;
}
EXPORT_SYMBOL_GPL(i1480_cmd);
/**
* Get information about the MAC and PHY
*
* @wa: Wired adaptor
* @neh: Notification/event handler
* @reply: Pointer to the reply event buffer
* @returns: 0 if ok, < 0 errno code on error.
*/
static
int i1480_cmd_get_mac_phy_info(struct i1480 *i1480)
{
int result;
struct uwb_rccb *cmd = i1480->cmd_buf;
struct i1480_evt_confirm_GMPI *reply = i1480->evt_buf;
cmd->bCommandType = i1480_CET_VS1;
cmd->wCommand = cpu_to_le16(i1480_CMD_GET_MAC_PHY_INFO);
reply->rceb.bEventType = i1480_CET_VS1;
reply->rceb.wEvent = i1480_EVT_GET_MAC_PHY_INFO;
result = i1480_cmd(i1480, "GET_MAC_PHY_INFO", sizeof(*cmd),
sizeof(*reply));
if (result < 0)
goto out;
if (le16_to_cpu(reply->status) != 0x00) {
dev_err(i1480->dev,
"GET_MAC_PHY_INFO: command execution failed: %d\n",
reply->status);
result = -EIO;
}
out:
return result;
}
/**
* Get i1480's info and print it
*
* @wa: Wire Adapter
* @neh: Notification/event handler
* @returns: 0 if ok, < 0 errno code on error.
*/
static
int i1480_check_info(struct i1480 *i1480)
{
struct i1480_evt_confirm_GMPI *reply = i1480->evt_buf;
int result;
unsigned mac_fw_rev;
#if i1480_FW <= 0x00000302
unsigned phy_fw_rev;
#endif
if (i1480->quirk_no_check_info) {
dev_err(i1480->dev, "firmware info check disabled\n");
return 0;
}
result = i1480_cmd_get_mac_phy_info(i1480);
if (result < 0) {
dev_err(i1480->dev, "Cannot get MAC & PHY information: %d\n",
result);
goto out;
}
mac_fw_rev = le16_to_cpu(reply->mac_fw_rev);
#if i1480_FW > 0x00000302
dev_info(i1480->dev,
"HW v%02hx "
"MAC FW v%02hx.%02hx caps %04hx "
"PHY type %02hx v%02hx caps %02hx %02hx %02hx\n",
reply->hw_rev, mac_fw_rev >> 8, mac_fw_rev & 0xff,
le16_to_cpu(reply->mac_caps),
reply->phy_vendor, reply->phy_rev,
reply->phy_caps[0], reply->phy_caps[1], reply->phy_caps[2]);
#else
phy_fw_rev = le16_to_cpu(reply->phy_fw_rev);
dev_info(i1480->dev, "MAC FW v%02hx.%02hx caps %04hx "
" PHY FW v%02hx.%02hx caps %04hx\n",
mac_fw_rev >> 8, mac_fw_rev & 0xff,
le16_to_cpu(reply->mac_caps),
phy_fw_rev >> 8, phy_fw_rev & 0xff,
le16_to_cpu(reply->phy_caps));
#endif
dev_dbg(i1480->dev,
"key-stores:%hu mcast-addr-stores:%hu sec-modes:%hu\n",
(unsigned short) reply->key_stores,
le16_to_cpu(reply->mcast_addr_stores),
(unsigned short) reply->sec_mode_supported);
/* FIXME: complain if fw version too low -- pending for
* numbering to stabilize */
out:
return result;
}
static
int i1480_print_state(struct i1480 *i1480)
{
int result;
u32 *buf = (u32 *) i1480->cmd_buf;
result = i1480->read(i1480, 0x80080000, 2 * sizeof(*buf));
if (result < 0) {
dev_err(i1480->dev, "cannot read U & L states: %d\n", result);
goto error;
}
dev_info(i1480->dev, "state U 0x%08x, L 0x%08x\n", buf[0], buf[1]);
error:
return result;
}
/*
* PCI probe, firmware uploader
*
* _mac_fw_upload() will call rc_setup(), which needs an rc_release().
*/
int i1480_fw_upload(struct i1480 *i1480)
{
int result;
result = i1480_pre_fw_upload(i1480); /* PHY pre fw */
if (result < 0 && result != -ENOENT) {
i1480_print_state(i1480);
goto error;
}
result = i1480_mac_fw_upload(i1480); /* MAC fw */
if (result < 0) {
if (result == -ENOENT)
dev_err(i1480->dev, "Cannot locate MAC FW file '%s'\n",
i1480->mac_fw_name);
else
i1480_print_state(i1480);
goto error;
}
result = i1480_phy_fw_upload(i1480); /* PHY fw */
if (result < 0 && result != -ENOENT) {
i1480_print_state(i1480);
goto error_rc_release;
}
result = i1480_check_info(i1480);
if (result < 0) {
dev_warn(i1480->dev, "Warning! Cannot check firmware info: %d\n",
result);
result = 0;
}
dev_info(i1480->dev, "firmware uploaded successfully\n");
error_rc_release:
if (i1480->rc_release)
i1480->rc_release(i1480);
result = 0;
error:
return result;
}
EXPORT_SYMBOL_GPL(i1480_fw_upload);

263
drivers/uwb/i1480/dfu/i1480-dfu.h Normal file
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@ -0,0 +1,263 @@
/*
* i1480 Device Firmware Upload
*
* 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 is the firmware uploader for the Intel Wireless UWB
* Link 1480 device (both in the USB and PCI incarnations).
*
* The process is quite simple: we stop the device, write the firmware
* to its memory and then restart it. Wait for the device to let us
* know it is done booting firmware. Ready.
*
* We might have to upload before or after a phy firmware (which might
* be done in two methods, using a normal firmware image or through
* the MPI port).
*
* Because USB and PCI use common methods, we just make ops out of the
* common operations (read, write, wait_init_done and cmd) and
* implement them in usb.c and pci.c.
*
* The flow is (some parts omitted):
*
* i1480_{usb,pci}_probe() On enumerate/discovery
* i1480_fw_upload()
* i1480_pre_fw_upload()
* __mac_fw_upload()
* fw_hdrs_load()
* mac_fw_hdrs_push()
* i1480->write() [i1480_{usb,pci}_write()]
* i1480_fw_cmp()
* i1480->read() [i1480_{usb,pci}_read()]
* i1480_mac_fw_upload()
* __mac_fw_upload()
* i1480->setup(()
* i1480->wait_init_done()
* i1480_cmd_reset()
* i1480->cmd() [i1480_{usb,pci}_cmd()]
* ...
* i1480_phy_fw_upload()
* request_firmware()
* i1480_mpi_write()
* i1480->cmd() [i1480_{usb,pci}_cmd()]
* i1480_check_info()
*
* Once the probe function enumerates the device and uploads the
* firmware, we just exit with -ENODEV, as we don't really want to
* attach to the device.
*/
#ifndef __i1480_DFU_H__
#define __i1480_DFU_H__
#include <linux/uwb/spec.h>
#include <linux/types.h>
#include <linux/completion.h>
#define i1480_FW_UPLOAD_MODE_MASK (cpu_to_le32(0x00000018))
#if i1480_FW > 0x00000302
#define i1480_RCEB_EXTENDED
#endif
struct uwb_rccb;
struct uwb_rceb;
/*
* Common firmware upload handlers
*
* Normally you embed this struct in another one specific to your hw.
*
* @write Write to device's memory from buffer.
* @read Read from device's memory to i1480->evt_buf.
* @setup Setup device after basic firmware is uploaded
* @wait_init_done
* Wait for the device to send a notification saying init
* is done.
* @cmd FOP for issuing the command to the hardware. The
* command data is contained in i1480->cmd_buf and the size
* is supplied as an argument. The command replied is put
* in i1480->evt_buf and the size in i1480->evt_result (or if
* an error, a < 0 errno code).
*
* @cmd_buf Memory buffer used to send commands to the device.
* Allocated by the upper layers i1480_fw_upload().
* Size has to be @buf_size.
* @evt_buf Memory buffer used to place the async notifications
* received by the hw. Allocated by the upper layers
* i1480_fw_upload().
* Size has to be @buf_size.
* @cmd_complete
* Low level driver uses this to notify code waiting afor
* an event that the event has arrived and data is in
* i1480->evt_buf (and size/result in i1480->evt_result).
* @hw_rev
* Use this value to activate dfu code to support new revisions
* of hardware. i1480_init() sets this to a default value.
* It should be updated by the USB and PCI code.
*/
struct i1480 {
struct device *dev;
int (*write)(struct i1480 *, u32 addr, const void *, size_t);
int (*read)(struct i1480 *, u32 addr, size_t);
int (*rc_setup)(struct i1480 *);
void (*rc_release)(struct i1480 *);
int (*wait_init_done)(struct i1480 *);
int (*cmd)(struct i1480 *, const char *cmd_name, size_t cmd_size);
const char *pre_fw_name;
const char *mac_fw_name;
const char *mac_fw_name_deprecate; /* FIXME: Will go away */
const char *phy_fw_name;
u8 hw_rev;
size_t buf_size; /* size of both evt_buf and cmd_buf */
void *evt_buf, *cmd_buf;
ssize_t evt_result;
struct completion evt_complete;
u8 quirk_no_check_info:1;
};
static inline
void i1480_init(struct i1480 *i1480)
{
i1480->hw_rev = 1;
init_completion(&i1480->evt_complete);
}
extern int i1480_fw_upload(struct i1480 *);
extern int i1480_pre_fw_upload(struct i1480 *);
extern int i1480_mac_fw_upload(struct i1480 *);
extern int i1480_phy_fw_upload(struct i1480 *);
extern ssize_t i1480_cmd(struct i1480 *, const char *, size_t, size_t);
extern int i1480_rceb_check(const struct i1480 *,
const struct uwb_rceb *, const char *, u8,
unsigned, unsigned);
enum {
/* Vendor specific command type */
i1480_CET_VS1 = 0xfd,
/* i1480 commands */
i1480_CMD_SET_IP_MAS = 0x000e,
i1480_CMD_GET_MAC_PHY_INFO = 0x0003,
i1480_CMD_MPI_WRITE = 0x000f,
i1480_CMD_MPI_READ = 0x0010,
/* i1480 events */
#if i1480_FW > 0x00000302
i1480_EVT_CONFIRM = 0x0002,
i1480_EVT_RM_INIT_DONE = 0x0101,
i1480_EVT_DEV_ADD = 0x0103,
i1480_EVT_DEV_RM = 0x0104,
i1480_EVT_DEV_ID_CHANGE = 0x0105,
i1480_EVT_GET_MAC_PHY_INFO = i1480_CMD_GET_MAC_PHY_INFO,
#else
i1480_EVT_CONFIRM = 0x0002,
i1480_EVT_RM_INIT_DONE = 0x0101,
i1480_EVT_DEV_ADD = 0x0103,
i1480_EVT_DEV_RM = 0x0104,
i1480_EVT_DEV_ID_CHANGE = 0x0105,
i1480_EVT_GET_MAC_PHY_INFO = i1480_EVT_CONFIRM,
#endif
};
struct i1480_evt_confirm {
struct uwb_rceb rceb;
#ifdef i1480_RCEB_EXTENDED
__le16 wParamLength;
#endif
u8 bResultCode;
} __attribute__((packed));
struct i1480_rceb {
struct uwb_rceb rceb;
#ifdef i1480_RCEB_EXTENDED
__le16 wParamLength;
#endif
} __attribute__((packed));
/**
* Get MAC & PHY Information confirm event structure
*
* Confirm event returned by the command.
*/
struct i1480_evt_confirm_GMPI {
#if i1480_FW > 0x00000302
struct uwb_rceb rceb;
__le16 wParamLength;
__le16 status;
u8 mac_addr[6]; /* EUI-64 bit IEEE address [still 8 bytes?] */
u8 dev_addr[2];
__le16 mac_fw_rev; /* major = v >> 8; minor = v & 0xff */
u8 hw_rev;
u8 phy_vendor;
u8 phy_rev; /* major v = >> 8; minor = v & 0xff */
__le16 mac_caps;
u8 phy_caps[3];
u8 key_stores;
__le16 mcast_addr_stores;
u8 sec_mode_supported;
#else
struct uwb_rceb rceb;
u8 status;
u8 mac_addr[8]; /* EUI-64 bit IEEE address [still 8 bytes?] */
u8 dev_addr[2];
__le16 mac_fw_rev; /* major = v >> 8; minor = v & 0xff */
__le16 phy_fw_rev; /* major v = >> 8; minor = v & 0xff */
__le16 mac_caps;
u8 phy_caps;
u8 key_stores;
__le16 mcast_addr_stores;
u8 sec_mode_supported;
#endif
} __attribute__((packed));
struct i1480_cmd_mpi_write {
struct uwb_rccb rccb;
__le16 size;
u8 data[];
};
struct i1480_cmd_mpi_read {
struct uwb_rccb rccb;
__le16 size;
struct {
u8 page, offset;
} __attribute__((packed)) data[];
} __attribute__((packed));
struct i1480_evt_mpi_read {
struct uwb_rceb rceb;
#ifdef i1480_RCEB_EXTENDED
__le16 wParamLength;
#endif
u8 bResultCode;
__le16 size;
struct {
u8 page, offset, value;
} __attribute__((packed)) data[];
} __attribute__((packed));
#endif /* #ifndef __i1480_DFU_H__ */

529
drivers/uwb/i1480/dfu/mac.c Normal file
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@ -0,0 +1,529 @@
/*
* Intel Wireless UWB Link 1480
* MAC 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.
*
*
* Implementation of the code for parsing the firmware file (extract
* the headers and binary code chunks) in the fw_*() functions. The
* code to upload pre and mac firmwares is the same, so it uses a
* common entry point in __mac_fw_upload(), which uses the i1480
* function pointers to push the firmware to the device.
*/
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/uwb.h>
#include "i1480-dfu.h"
#define D_LOCAL 0
#include <linux/uwb/debug.h>
/*
* Descriptor for a continuous segment of MAC fw data
*/
struct fw_hdr {
unsigned long address;
size_t length;
const u32 *bin;
struct fw_hdr *next;
};
/* Free a chain of firmware headers */
static
void fw_hdrs_free(struct fw_hdr *hdr)
{
struct fw_hdr *next;
while (hdr) {
next = hdr->next;
kfree(hdr);
hdr = next;
}
}
/* Fill a firmware header descriptor from a memory buffer */
static
int fw_hdr_load(struct i1480 *i1480, struct fw_hdr *hdr, unsigned hdr_cnt,
const char *_data, const u32 *data_itr, const u32 *data_top)
{
size_t hdr_offset = (const char *) data_itr - _data;
size_t remaining_size = (void *) data_top - (void *) data_itr;
if (data_itr + 2 > data_top) {
dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in header at "
"offset %zu, limit %zu\n",
hdr_cnt, hdr_offset,
(const char *) data_itr + 2 - _data,
(const char *) data_top - _data);
return -EINVAL;
}
hdr->next = NULL;
hdr->address = le32_to_cpu(*data_itr++);
hdr->length = le32_to_cpu(*data_itr++);
hdr->bin = data_itr;
if (hdr->length > remaining_size) {
dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in data; "
"chunk too long (%zu bytes), only %zu left\n",
hdr_cnt, hdr_offset, hdr->length, remaining_size);
return -EINVAL;
}
return 0;
}
/**
* Get a buffer where the firmware is supposed to be and create a
* chain of headers linking them together.
*
* @phdr: where to place the pointer to the first header (headers link
* to the next via the @hdr->next ptr); need to free the whole
* chain when done.
*
* @_data: Pointer to the data buffer.
*
* @_data_size: Size of the data buffer (bytes); data size has to be a
* multiple of 4. Function will fail if not.
*
* Goes over the whole binary blob; reads the first chunk and creates
* a fw hdr from it (which points to where the data is in @_data and
* the length of the chunk); then goes on to the next chunk until
* done. Each header is linked to the next.
*/
static
int fw_hdrs_load(struct i1480 *i1480, struct fw_hdr **phdr,
const char *_data, size_t data_size)
{
int result;
unsigned hdr_cnt = 0;
u32 *data = (u32 *) _data, *data_itr, *data_top;
struct fw_hdr *hdr, **prev_hdr = phdr;
result = -EINVAL;
/* Check size is ok and pointer is aligned */
if (data_size % sizeof(u32) != 0)
goto error;
if ((unsigned long) _data % sizeof(u16) != 0)
goto error;
*phdr = NULL;
data_itr = data;
data_top = (u32 *) (_data + data_size);
while (data_itr < data_top) {
result = -ENOMEM;
hdr = kmalloc(sizeof(*hdr), GFP_KERNEL);
if (hdr == NULL) {
dev_err(i1480->dev, "Cannot allocate fw header "
"for chunk #%u\n", hdr_cnt);
goto error_alloc;
}
result = fw_hdr_load(i1480, hdr, hdr_cnt,
_data, data_itr, data_top);
if (result < 0)
goto error_load;
data_itr += 2 + hdr->length;
*prev_hdr = hdr;
prev_hdr = &hdr->next;
hdr_cnt++;
};
*prev_hdr = NULL;
return 0;
error_load:
kfree(hdr);
error_alloc:
fw_hdrs_free(*phdr);
error:
return result;
}
/**
* Compares a chunk of fw with one in the devices's memory
*
* @i1480: Device instance
* @hdr: Pointer to the firmware chunk
* @returns: 0 if equal, < 0 errno on error. If > 0, it is the offset
* where the difference was found (plus one).
*
* Kind of dirty and simplistic, but does the trick in both the PCI
* and USB version. We do a quick[er] memcmp(), and if it fails, we do
* a byte-by-byte to find the offset.
*/
static
ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr)
{
ssize_t result = 0;
u32 src_itr = 0, cnt;
size_t size = hdr->length*sizeof(hdr->bin[0]);
size_t chunk_size;
u8 *bin = (u8 *) hdr->bin;
while (size > 0) {
chunk_size = size < i1480->buf_size ? size : i1480->buf_size;
result = i1480->read(i1480, hdr->address + src_itr, chunk_size);
if (result < 0) {
dev_err(i1480->dev, "error reading for verification: "
"%zd\n", result);
goto error;
}
if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
u8 *buf = i1480->cmd_buf;
d_printf(2, i1480->dev,
"original data @ %p + %u, %zu bytes\n",
bin, src_itr, result);
d_dump(4, i1480->dev, bin + src_itr, result);
for (cnt = 0; cnt < result; cnt++)
if (bin[src_itr + cnt] != buf[cnt]) {
dev_err(i1480->dev, "byte failed at "
"src_itr %u cnt %u [0x%02x "
"vs 0x%02x]\n", src_itr, cnt,
bin[src_itr + cnt], buf[cnt]);
result = src_itr + cnt + 1;
goto cmp_failed;
}
}
src_itr += result;
size -= result;
}
result = 0;
error:
cmp_failed:
return result;
}
/**
* Writes firmware headers to the device.
*
* @prd: PRD instance
* @hdr: Processed firmware
* @returns: 0 if ok, < 0 errno on error.
*/
static
int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
const char *fw_name, const char *fw_tag)
{
struct device *dev = i1480->dev;
ssize_t result = 0;
struct fw_hdr *hdr_itr;
int verif_retry_count;
d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr);
/* Now, header by header, push them to the hw */
for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
verif_retry_count = 0;
retry:
dev_dbg(dev, "fw chunk (%zu @ 0x%08lx)\n",
hdr_itr->length * sizeof(hdr_itr->bin[0]),
hdr_itr->address);
result = i1480->write(i1480, hdr_itr->address, hdr_itr->bin,
hdr_itr->length*sizeof(hdr_itr->bin[0]));
if (result < 0) {
dev_err(dev, "%s fw '%s': write failed (%zuB @ 0x%lx):"
" %zd\n", fw_tag, fw_name,
hdr_itr->length * sizeof(hdr_itr->bin[0]),
hdr_itr->address, result);
break;
}
result = i1480_fw_cmp(i1480, hdr_itr);
if (result < 0) {
dev_err(dev, "%s fw '%s': verification read "
"failed (%zuB @ 0x%lx): %zd\n",
fw_tag, fw_name,
hdr_itr->length * sizeof(hdr_itr->bin[0]),
hdr_itr->address, result);
break;
}
if (result > 0) { /* Offset where it failed + 1 */
result--;
dev_err(dev, "%s fw '%s': WARNING: verification "
"failed at 0x%lx: retrying\n",
fw_tag, fw_name, hdr_itr->address + result);
if (++verif_retry_count < 3)
goto retry; /* write this block again! */
dev_err(dev, "%s fw '%s': verification failed at 0x%lx: "
"tried %d times\n", fw_tag, fw_name,
hdr_itr->address + result, verif_retry_count);
result = -EINVAL;
break;
}
}
d_fnend(3, dev, "(%zd)\n", result);
return result;
}
/** Puts the device in firmware upload mode.*/
static
int mac_fw_upload_enable(struct i1480 *i1480)
{
int result;
u32 reg = 0x800000c0;
u32 *buffer = (u32 *)i1480->cmd_buf;
if (i1480->hw_rev > 1)
reg = 0x8000d0d4;
result = i1480->read(i1480, reg, sizeof(u32));
if (result < 0)
goto error_cmd;
*buffer &= ~i1480_FW_UPLOAD_MODE_MASK;
result = i1480->write(i1480, reg, buffer, sizeof(u32));
if (result < 0)
goto error_cmd;
return 0;
error_cmd:
dev_err(i1480->dev, "can't enable fw upload mode: %d\n", result);
return result;
}
/** Gets the device out of firmware upload mode. */
static
int mac_fw_upload_disable(struct i1480 *i1480)
{
int result;
u32 reg = 0x800000c0;
u32 *buffer = (u32 *)i1480->cmd_buf;
if (i1480->hw_rev > 1)
reg = 0x8000d0d4;
result = i1480->read(i1480, reg, sizeof(u32));
if (result < 0)
goto error_cmd;
*buffer |= i1480_FW_UPLOAD_MODE_MASK;
result = i1480->write(i1480, reg, buffer, sizeof(u32));
if (result < 0)
goto error_cmd;
return 0;
error_cmd:
dev_err(i1480->dev, "can't disable fw upload mode: %d\n", result);
return result;
}
/**
* Generic function for uploading a MAC firmware.
*
* @i1480: Device instance
* @fw_name: Name of firmware file to upload.
* @fw_tag: Name of the firmware type (for messages)
* [eg: MAC, PRE]
* @do_wait: Wait for device to emit initialization done message (0
* for PRE fws, 1 for MAC fws).
* @returns: 0 if ok, < 0 errno on error.
*/
static
int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
const char *fw_tag)
{
int result;
const struct firmware *fw;
struct fw_hdr *fw_hdrs;
d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag);
result = request_firmware(&fw, fw_name, i1480->dev);
if (result < 0) /* Up to caller to complain on -ENOENT */
goto out;
d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name);
result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
if (result < 0) {
dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
"file: %d\n", fw_tag, fw_name, result);
goto out_release;
}
result = mac_fw_upload_enable(i1480);
if (result < 0)
goto out_hdrs_release;
result = mac_fw_hdrs_push(i1480, fw_hdrs, fw_name, fw_tag);
mac_fw_upload_disable(i1480);
out_hdrs_release:
if (result >= 0)
dev_info(i1480->dev, "%s fw '%s': uploaded\n", fw_tag, fw_name);
else
dev_err(i1480->dev, "%s fw '%s': failed to upload (%d), "
"power cycle device\n", fw_tag, fw_name, result);
fw_hdrs_free(fw_hdrs);
out_release:
release_firmware(fw);
out:
d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag,
result);
return result;
}
/**
* Upload a pre-PHY firmware
*
*/
int i1480_pre_fw_upload(struct i1480 *i1480)
{
int result;
result = __mac_fw_upload(i1480, i1480->pre_fw_name, "PRE");
if (result == 0)
msleep(400);
return result;
}
/**
* Reset a the MAC and PHY
*
* @i1480: Device's instance
* @returns: 0 if ok, < 0 errno code on error
*
* We put the command on kmalloc'ed memory as some arches cannot do
* USB from the stack. The reply event is copied from an stage buffer,
* so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
*
* We issue the reset to make sure the UWB controller reinits the PHY;
* this way we can now if the PHY init went ok.
*/
static
int i1480_cmd_reset(struct i1480 *i1480)
{
int result;
struct uwb_rccb *cmd = (void *) i1480->cmd_buf;
struct i1480_evt_reset {
struct uwb_rceb rceb;
u8 bResultCode;
} __attribute__((packed)) *reply = (void *) i1480->evt_buf;
result = -ENOMEM;
cmd->bCommandType = UWB_RC_CET_GENERAL;
cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
reply->rceb.bEventType = UWB_RC_CET_GENERAL;
reply->rceb.wEvent = UWB_RC_CMD_RESET;
result = i1480_cmd(i1480, "RESET", sizeof(*cmd), sizeof(*reply));
if (result < 0)
goto out;
if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
dev_err(i1480->dev, "RESET: command execution failed: %u\n",
reply->bResultCode);
result = -EIO;
}
out:
return result;
}
/** Wait for the MAC FW to start running */
static
int i1480_fw_is_running_q(struct i1480 *i1480)
{
int cnt = 0;
int result;
u32 *val = (u32 *) i1480->cmd_buf;
d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480);
for (cnt = 0; cnt < 10; cnt++) {
msleep(100);
result = i1480->read(i1480, 0x80080000, 4);
if (result < 0) {
dev_err(i1480->dev, "Can't read 0x8008000: %d\n", result);
goto out;
}
if (*val == 0x55555555UL) /* fw running? cool */
goto out;
if (printk_ratelimit())
d_printf(5, i1480->dev, "read #%d: 0x%08x\n", cnt, *val);
}
dev_err(i1480->dev, "Timed out waiting for fw to start\n");
result = -ETIMEDOUT;
out:
d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}
/**
* Upload MAC firmware, wait for it to start
*
* @i1480: Device instance
* @fw_name: Name of the file that contains the firmware
*
* This has to be called after the pre fw has been uploaded (if
* there is any).
*/
int i1480_mac_fw_upload(struct i1480 *i1480)
{
int result = 0, deprecated_name = 0;
struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
d_fnstart(3, i1480->dev, "(%p)\n", i1480);
result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
if (result == -ENOENT) {
result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
"MAC");
deprecated_name = 1;
}
if (result < 0)
return result;
if (deprecated_name == 1)
dev_warn(i1480->dev,
"WARNING: firmware file name %s is deprecated, "
"please rename to %s\n",
i1480->mac_fw_name_deprecate, i1480->mac_fw_name);
result = i1480_fw_is_running_q(i1480);
if (result < 0)
goto error_fw_not_running;
result = i1480->rc_setup ? i1480->rc_setup(i1480) : 0;
if (result < 0) {
dev_err(i1480->dev, "Cannot setup after MAC fw upload: %d\n",
result);
goto error_setup;
}
result = i1480->wait_init_done(i1480); /* wait init'on */
if (result < 0) {
dev_err(i1480->dev, "MAC fw '%s': Initialization timed out "
"(%d)\n", i1480->mac_fw_name, result);
goto error_init_timeout;
}
/* verify we got the right initialization done event */
if (i1480->evt_result != sizeof(*rcebe)) {
dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
"wrong size (%zu bytes vs %zu needed)\n",
i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32));
goto error_size;
}
result = -EIO;
if (rcebe->rceb.bEventType != i1480_CET_VS1
|| le16_to_cpu(rcebe->rceb.wEvent) != i1480_EVT_RM_INIT_DONE) {
dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
"received; expected 0x%02x/%04x/00\n",
rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),
rcebe->rceb.bEventContext, i1480_CET_VS1,
i1480_EVT_RM_INIT_DONE);
goto error_init_timeout;
}
result = i1480_cmd_reset(i1480);
if (result < 0)
dev_err(i1480->dev, "MAC fw '%s': MBOA reset failed (%d)\n",
i1480->mac_fw_name, result);
error_fw_not_running:
error_init_timeout:
error_size:
error_setup:
d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}

203
drivers/uwb/i1480/dfu/phy.c Normal file
View File

@ -0,0 +1,203 @@
/*
* Intel Wireless UWB Link 1480
* PHY parameters upload
*
* 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.
*
*
* Code for uploading the PHY parameters to the PHY through the UWB
* Radio Control interface.
*
* We just send the data through the MPI interface using HWA-like
* commands and then reset the PHY to make sure it is ok.
*/
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/usb/wusb.h>
#include "i1480-dfu.h"
/**
* Write a value array to an address of the MPI interface
*
* @i1480: Device descriptor
* @data: Data array to write
* @size: Size of the data array
* @returns: 0 if ok, < 0 errno code on error.
*
* The data array is organized into pairs:
*
* ADDRESS VALUE
*
* ADDRESS is BE 16 bit unsigned, VALUE 8 bit unsigned. Size thus has
* to be a multiple of three.
*/
static
int i1480_mpi_write(struct i1480 *i1480, const void *data, size_t size)
{
int result;
struct i1480_cmd_mpi_write *cmd = i1480->cmd_buf;
struct i1480_evt_confirm *reply = i1480->evt_buf;
BUG_ON(size > 480);
result = -ENOMEM;
cmd->rccb.bCommandType = i1480_CET_VS1;
cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_WRITE);
cmd->size = cpu_to_le16(size);
memcpy(cmd->data, data, size);
reply->rceb.bEventType = i1480_CET_VS1;
reply->rceb.wEvent = i1480_CMD_MPI_WRITE;
result = i1480_cmd(i1480, "MPI-WRITE", sizeof(*cmd) + size, sizeof(*reply));
if (result < 0)
goto out;
if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
dev_err(i1480->dev, "MPI-WRITE: command execution failed: %d\n",
reply->bResultCode);
result = -EIO;
}
out:
return result;
}
/**
* Read a value array to from an address of the MPI interface
*
* @i1480: Device descriptor
* @data: where to place the read array
* @srcaddr: Where to read from
* @size: Size of the data read array
* @returns: 0 if ok, < 0 errno code on error.
*
* The command data array is organized into pairs ADDR0 ADDR1..., and
* the returned data in ADDR0 VALUE0 ADDR1 VALUE1...
*
* We generate the command array to be a sequential read and then
* rearrange the result.
*
* We use the i1480->cmd_buf for the command, i1480->evt_buf for the reply.
*
* As the reply has to fit in 512 bytes (i1480->evt_buffer), the max amount
* of values we can read is (512 - sizeof(*reply)) / 3
*/
static
int i1480_mpi_read(struct i1480 *i1480, u8 *data, u16 srcaddr, size_t size)
{
int result;
struct i1480_cmd_mpi_read *cmd = i1480->cmd_buf;
struct i1480_evt_mpi_read *reply = i1480->evt_buf;
unsigned cnt;
memset(i1480->cmd_buf, 0x69, 512);
memset(i1480->evt_buf, 0x69, 512);
BUG_ON(size > (i1480->buf_size - sizeof(*reply)) / 3);
result = -ENOMEM;
cmd->rccb.bCommandType = i1480_CET_VS1;
cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_READ);
cmd->size = cpu_to_le16(3*size);
for (cnt = 0; cnt < size; cnt++) {
cmd->data[cnt].page = (srcaddr + cnt) >> 8;
cmd->data[cnt].offset = (srcaddr + cnt) & 0xff;
}
reply->rceb.bEventType = i1480_CET_VS1;
reply->rceb.wEvent = i1480_CMD_MPI_READ;
result = i1480_cmd(i1480, "MPI-READ", sizeof(*cmd) + 2*size,
sizeof(*reply) + 3*size);
if (result < 0)
goto out;
if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
dev_err(i1480->dev, "MPI-READ: command execution failed: %d\n",
reply->bResultCode);
result = -EIO;
}
for (cnt = 0; cnt < size; cnt++) {
if (reply->data[cnt].page != (srcaddr + cnt) >> 8)
dev_err(i1480->dev, "MPI-READ: page inconsistency at "
"index %u: expected 0x%02x, got 0x%02x\n", cnt,
(srcaddr + cnt) >> 8, reply->data[cnt].page);
if (reply->data[cnt].offset != ((srcaddr + cnt) & 0x00ff))
dev_err(i1480->dev, "MPI-READ: offset inconsistency at "
"index %u: expected 0x%02x, got 0x%02x\n", cnt,
(srcaddr + cnt) & 0x00ff,
reply->data[cnt].offset);
data[cnt] = reply->data[cnt].value;
}
result = 0;
out:
return result;
}
/**
* Upload a PHY firmware, wait for it to start
*
* @i1480: Device instance
* @fw_name: Name of the file that contains the firmware
*
* We assume the MAC fw is up and running. This means we can use the
* MPI interface to write the PHY firmware. Once done, we issue an
* MBOA Reset, which will force the MAC to reset and reinitialize the
* PHY. If that works, we are ready to go.
*
* Max packet size for the MPI write is 512, so the max buffer is 480
* (which gives us 160 byte triads of MSB, LSB and VAL for the data).
*/
int i1480_phy_fw_upload(struct i1480 *i1480)
{
int result;
const struct firmware *fw;
const char *data_itr, *data_top;
const size_t MAX_BLK_SIZE = 480; /* 160 triads */
size_t data_size;
u8 phy_stat;
result = request_firmware(&fw, i1480->phy_fw_name, i1480->dev);
if (result < 0)
goto out;
/* Loop writing data in chunks as big as possible until done. */
for (data_itr = fw->data, data_top = data_itr + fw->size;
data_itr < data_top; data_itr += MAX_BLK_SIZE) {
data_size = min(MAX_BLK_SIZE, (size_t) (data_top - data_itr));
result = i1480_mpi_write(i1480, data_itr, data_size);
if (result < 0)
goto error_mpi_write;
}
/* Read MPI page 0, offset 6; if 0, PHY was initialized correctly. */
result = i1480_mpi_read(i1480, &phy_stat, 0x0006, 1);
if (result < 0) {
dev_err(i1480->dev, "PHY: can't get status: %d\n", result);
goto error_mpi_status;
}
if (phy_stat != 0) {
result = -ENODEV;
dev_info(i1480->dev, "error, PHY not ready: %u\n", phy_stat);
goto error_phy_status;
}
dev_info(i1480->dev, "PHY fw '%s': uploaded\n", i1480->phy_fw_name);
error_phy_status:
error_mpi_status:
error_mpi_write:
release_firmware(fw);
if (result < 0)
dev_err(i1480->dev, "PHY fw '%s': failed to upload (%d), "
"power cycle device\n", i1480->phy_fw_name, result);
out:
return result;
}

500
drivers/uwb/i1480/dfu/usb.c Normal file
View File

@ -0,0 +1,500 @@
/*
* 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/version.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
#include <linux/usb/wusb-wa.h>
#include "i1480-dfu.h"
#define D_LOCAL 0
#include <linux/uwb/debug.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;
d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n",
i1480, memory_address, buffer, size);
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,
cpu_to_le16(memory_address & 0xffff),
cpu_to_le16((memory_address >> 16) & 0xffff),
i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
if (result < 0)
break;
d_printf(3, i1480->dev,
"wrote @ 0x%08x %u bytes (of %zu bytes requested)\n",
memory_address, result, buffer_size);
d_dump(4, i1480->dev, i1480->cmd_buf, result);
itr += result;
memory_address += result;
size -= result;
}
d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n",
i1480, memory_address, buffer, 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);
d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n",
i1480, addr, size);
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,
cpu_to_le16(itr_addr & 0xffff),
cpu_to_le16((itr_addr >> 16) & 0xffff),
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:
d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n",
i1480, addr, size, result);
if (result > 0)
d_dump(4, i1480->dev, i1480->cmd_buf, result);
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 succesful).
*
* 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;
d_fnstart(3, dev, "(%p)\n", i1480);
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);
d_fnend(3, dev, "(%p) = 0\n", i1480);
return 0;
error_wait:
usb_kill_urb(i1480_usb->neep_urb);
error_submit:
i1480->evt_result = result;
d_fnend(3, dev, "(%p) = %d\n", i1480, 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;
d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
/* 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;
}
d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
i1480, cmd_name, cmd_size, result);
return result;
error_submit_ep0:
usb_kill_urb(i1480_usb->neep_urb);
error_submit_ep1:
d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
i1480, cmd_name, cmd_size, result);
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 firmare */
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;
}
#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 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");

99
drivers/uwb/i1480/i1480-est.c Normal file
View File

@ -0,0 +1,99 @@
/*
* Intel Wireless UWB Link 1480
* Event Size tables for Wired Adaptors
*
* 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.
*
*
* FIXME: docs
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/uwb.h>
#include "dfu/i1480-dfu.h"
/** Event size table for wEvents 0x00XX */
static struct uwb_est_entry i1480_est_fd00[] = {
/* Anybody expecting this response has to use
* neh->extra_size to specify the real size that will
* come back. */
[i1480_EVT_CONFIRM] = { .size = sizeof(struct i1480_evt_confirm) },
[i1480_CMD_SET_IP_MAS] = { .size = sizeof(struct i1480_evt_confirm) },
#ifdef i1480_RCEB_EXTENDED
[0x09] = {
.size = sizeof(struct i1480_rceb),
.offset = 1 + offsetof(struct i1480_rceb, wParamLength),
},
#endif
};
/** Event size table for wEvents 0x01XX */
static struct uwb_est_entry i1480_est_fd01[] = {
[0xff & i1480_EVT_RM_INIT_DONE] = { .size = sizeof(struct i1480_rceb) },
[0xff & i1480_EVT_DEV_ADD] = { .size = sizeof(struct i1480_rceb) + 9 },
[0xff & i1480_EVT_DEV_RM] = { .size = sizeof(struct i1480_rceb) + 9 },
[0xff & i1480_EVT_DEV_ID_CHANGE] = {
.size = sizeof(struct i1480_rceb) + 2 },
};
static int i1480_est_init(void)
{
int result = uwb_est_register(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
i1480_est_fd00,
ARRAY_SIZE(i1480_est_fd00));
if (result < 0) {
printk(KERN_ERR "Can't register EST table fd00: %d\n", result);
return result;
}
result = uwb_est_register(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
if (result < 0) {
printk(KERN_ERR "Can't register EST table fd01: %d\n", result);
return result;
}
return 0;
}
module_init(i1480_est_init);
static void i1480_est_exit(void)
{
uwb_est_unregister(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
i1480_est_fd00, ARRAY_SIZE(i1480_est_fd00));
uwb_est_unregister(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
}
module_exit(i1480_est_exit);
MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
MODULE_DESCRIPTION("i1480's Vendor Specific Event Size Tables");
MODULE_LICENSE("GPL");
/**
* USB device ID's that we handle
*
* [so we are loaded when this kind device is connected]
*/
static struct usb_device_id i1480_est_id_table[] = {
{ USB_DEVICE(0x8086, 0xdf3b), },
{ USB_DEVICE(0x8086, 0x0c3b), },
{ },
};
MODULE_DEVICE_TABLE(usb, i1480_est_id_table);