511 строки
14 KiB
C
511 строки
14 KiB
C
/*
|
|
* 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/slab.h>
|
|
#include <linux/uwb.h>
|
|
#include "i1480-dfu.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;
|
|
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;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
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;
|
|
|
|
result = request_firmware(&fw, fw_name, i1480->dev);
|
|
if (result < 0) /* Up to caller to complain on -ENOENT */
|
|
goto out;
|
|
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:
|
|
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;
|
|
|
|
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;
|
|
}
|
|
dev_err(i1480->dev, "Timed out waiting for fw to start\n");
|
|
result = -ETIMEDOUT;
|
|
out:
|
|
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;
|
|
|
|
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));
|
|
goto error_size;
|
|
}
|
|
result = -EIO;
|
|
if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
|
|
i1480_EVT_RM_INIT_DONE) < 0) {
|
|
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:
|
|
return result;
|
|
}
|