151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/***********************************************************************/
|
|
/**
|
|
|
|
AudioScience HPI driver
|
|
Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of version 2 of the GNU General Public License 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
\file
|
|
Functions for reading DSP code using
|
|
hotplug firmware loader from individual dsp code files
|
|
*/
|
|
/***********************************************************************/
|
|
#define SOURCEFILE_NAME "hpidspcd.c"
|
|
#include "hpidspcd.h"
|
|
#include "hpidebug.h"
|
|
|
|
struct dsp_code_private {
|
|
/** Firmware descriptor */
|
|
const struct firmware *firmware;
|
|
struct pci_dev *dev;
|
|
};
|
|
|
|
#define HPI_VER_DECIMAL ((int)(HPI_VER_MAJOR(HPI_VER) * 10000 + \
|
|
HPI_VER_MINOR(HPI_VER) * 100 + HPI_VER_RELEASE(HPI_VER)))
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
short hpi_dsp_code_open(u32 adapter, void *os_data, struct dsp_code *dsp_code,
|
|
u32 *os_error_code)
|
|
{
|
|
const struct firmware *firmware;
|
|
struct pci_dev *dev = os_data;
|
|
struct code_header header;
|
|
char fw_name[20];
|
|
short err_ret = HPI_ERROR_DSP_FILE_NOT_FOUND;
|
|
int err;
|
|
|
|
sprintf(fw_name, "asihpi/dsp%04x.bin", adapter);
|
|
|
|
err = request_firmware(&firmware, fw_name, &dev->dev);
|
|
|
|
if (err || !firmware) {
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"%d, request_firmware failed for %s\n", err,
|
|
fw_name);
|
|
goto error1;
|
|
}
|
|
if (firmware->size < sizeof(header)) {
|
|
dev_printk(KERN_ERR, &dev->dev, "Header size too small %s\n",
|
|
fw_name);
|
|
goto error2;
|
|
}
|
|
memcpy(&header, firmware->data, sizeof(header));
|
|
|
|
if ((header.type != 0x45444F43) || /* "CODE" */
|
|
(header.adapter != adapter)
|
|
|| (header.size != firmware->size)) {
|
|
dev_printk(KERN_ERR, &dev->dev, "Invalid firmware file\n");
|
|
goto error2;
|
|
}
|
|
|
|
if ((header.version / 100 & ~1) != (HPI_VER_DECIMAL / 100 & ~1)) {
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"Incompatible firmware version "
|
|
"DSP image %d != Driver %d\n", header.version,
|
|
HPI_VER_DECIMAL);
|
|
goto error2;
|
|
}
|
|
|
|
if (header.version != HPI_VER_DECIMAL) {
|
|
dev_printk(KERN_WARNING, &dev->dev,
|
|
"Firmware: release version mismatch DSP image %d != Driver %d\n",
|
|
header.version, HPI_VER_DECIMAL);
|
|
}
|
|
|
|
HPI_DEBUG_LOG(DEBUG, "dsp code %s opened\n", fw_name);
|
|
dsp_code->pvt = kmalloc(sizeof(*dsp_code->pvt), GFP_KERNEL);
|
|
if (!dsp_code->pvt) {
|
|
err_ret = HPI_ERROR_MEMORY_ALLOC;
|
|
goto error2;
|
|
}
|
|
|
|
dsp_code->pvt->dev = dev;
|
|
dsp_code->pvt->firmware = firmware;
|
|
dsp_code->header = header;
|
|
dsp_code->block_length = header.size / sizeof(u32);
|
|
dsp_code->word_count = sizeof(header) / sizeof(u32);
|
|
return 0;
|
|
|
|
error2:
|
|
release_firmware(firmware);
|
|
error1:
|
|
dsp_code->block_length = 0;
|
|
return err_ret;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
void hpi_dsp_code_close(struct dsp_code *dsp_code)
|
|
{
|
|
if (dsp_code->pvt->firmware) {
|
|
HPI_DEBUG_LOG(DEBUG, "dsp code closed\n");
|
|
release_firmware(dsp_code->pvt->firmware);
|
|
dsp_code->pvt->firmware = NULL;
|
|
}
|
|
kfree(dsp_code->pvt);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
void hpi_dsp_code_rewind(struct dsp_code *dsp_code)
|
|
{
|
|
/* Go back to start of data, after header */
|
|
dsp_code->word_count = sizeof(struct code_header) / sizeof(u32);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
short hpi_dsp_code_read_word(struct dsp_code *dsp_code, u32 *pword)
|
|
{
|
|
if (dsp_code->word_count + 1 > dsp_code->block_length)
|
|
return HPI_ERROR_DSP_FILE_FORMAT;
|
|
|
|
*pword = ((u32 *)(dsp_code->pvt->firmware->data))[dsp_code->
|
|
word_count];
|
|
dsp_code->word_count++;
|
|
return 0;
|
|
}
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
short hpi_dsp_code_read_block(size_t words_requested,
|
|
struct dsp_code *dsp_code, u32 **ppblock)
|
|
{
|
|
if (dsp_code->word_count + words_requested > dsp_code->block_length)
|
|
return HPI_ERROR_DSP_FILE_FORMAT;
|
|
|
|
*ppblock =
|
|
((u32 *)(dsp_code->pvt->firmware->data)) +
|
|
dsp_code->word_count;
|
|
dsp_code->word_count += words_requested;
|
|
return 0;
|
|
}
|