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Some products firmware is no longer being updated e.g. dsp5000, dsp8700 but it should continue to work with updated HPI versions. Avoid regression by allowing this firmware to be loaded as long as major version is the same. Warn about mismatching versions, as matching versions are preferred. Signed-off-by: Eliot Blennerhassett <eliot@blennerhassett.gen.nz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/***********************************************************************
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AudioScience HPI driver
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Functions for reading DSP code using hotplug firmware loader
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Copyright (C) 1997-2014 AudioScience Inc. <support@audioscience.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation;
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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***********************************************************************/
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#define SOURCEFILE_NAME "hpidspcd.c"
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#include "hpidspcd.h"
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#include "hpidebug.h"
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#include "hpi_version.h"
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struct dsp_code_private {
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/** Firmware descriptor */
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const struct firmware *firmware;
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struct pci_dev *dev;
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};
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/*-------------------------------------------------------------------*/
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short hpi_dsp_code_open(u32 adapter, void *os_data, struct dsp_code *dsp_code,
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u32 *os_error_code)
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{
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const struct firmware *firmware;
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struct pci_dev *dev = os_data;
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struct code_header header;
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char fw_name[20];
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short err_ret = HPI_ERROR_DSP_FILE_NOT_FOUND;
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int err;
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sprintf(fw_name, "asihpi/dsp%04x.bin", adapter);
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err = request_firmware(&firmware, fw_name, &dev->dev);
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if (err || !firmware) {
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dev_err(&dev->dev, "%d, request_firmware failed for %s\n",
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err, fw_name);
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goto error1;
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}
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if (firmware->size < sizeof(header)) {
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dev_err(&dev->dev, "Header size too small %s\n", fw_name);
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goto error2;
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}
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memcpy(&header, firmware->data, sizeof(header));
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if ((header.type != 0x45444F43) || /* "CODE" */
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(header.adapter != adapter)
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|| (header.size != firmware->size)) {
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dev_err(&dev->dev,
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"Invalid firmware header size %d != file %zd\n",
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header.size, firmware->size);
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goto error2;
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}
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if (HPI_VER_MAJOR(header.version) != HPI_VER_MAJOR(HPI_VER)) {
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/* Major version change probably means Host-DSP protocol change */
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dev_err(&dev->dev,
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"Incompatible firmware version DSP image %X != Driver %X\n",
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header.version, HPI_VER);
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goto error2;
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}
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if (header.version != HPI_VER) {
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dev_warn(&dev->dev,
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"Firmware version mismatch: DSP image %X != Driver %X\n",
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header.version, HPI_VER);
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}
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HPI_DEBUG_LOG(DEBUG, "dsp code %s opened\n", fw_name);
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dsp_code->pvt = kmalloc(sizeof(*dsp_code->pvt), GFP_KERNEL);
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if (!dsp_code->pvt) {
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err_ret = HPI_ERROR_MEMORY_ALLOC;
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goto error2;
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}
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dsp_code->pvt->dev = dev;
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dsp_code->pvt->firmware = firmware;
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dsp_code->header = header;
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dsp_code->block_length = header.size / sizeof(u32);
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dsp_code->word_count = sizeof(header) / sizeof(u32);
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return 0;
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error2:
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release_firmware(firmware);
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error1:
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dsp_code->block_length = 0;
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return err_ret;
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}
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/*-------------------------------------------------------------------*/
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void hpi_dsp_code_close(struct dsp_code *dsp_code)
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{
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HPI_DEBUG_LOG(DEBUG, "dsp code closed\n");
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release_firmware(dsp_code->pvt->firmware);
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kfree(dsp_code->pvt);
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}
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/*-------------------------------------------------------------------*/
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void hpi_dsp_code_rewind(struct dsp_code *dsp_code)
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{
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/* Go back to start of data, after header */
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dsp_code->word_count = sizeof(struct code_header) / sizeof(u32);
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}
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/*-------------------------------------------------------------------*/
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short hpi_dsp_code_read_word(struct dsp_code *dsp_code, u32 *pword)
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{
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if (dsp_code->word_count + 1 > dsp_code->block_length)
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return HPI_ERROR_DSP_FILE_FORMAT;
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*pword = ((u32 *)(dsp_code->pvt->firmware->data))[dsp_code->
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word_count];
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dsp_code->word_count++;
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return 0;
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}
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/*-------------------------------------------------------------------*/
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short hpi_dsp_code_read_block(size_t words_requested,
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struct dsp_code *dsp_code, u32 **ppblock)
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{
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if (dsp_code->word_count + words_requested > dsp_code->block_length)
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return HPI_ERROR_DSP_FILE_FORMAT;
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*ppblock =
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((u32 *)(dsp_code->pvt->firmware->data)) +
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dsp_code->word_count;
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dsp_code->word_count += words_requested;
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return 0;
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}
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