107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/***********************************************************************/
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/**
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AudioScience HPI driver
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Copyright (C) 1997-2011 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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\file
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Functions for reading DSP code to load into DSP
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*/
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/***********************************************************************/
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#ifndef _HPIDSPCD_H_
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#define _HPIDSPCD_H_
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#include "hpi_internal.h"
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/** Header structure for dsp firmware file
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This structure must match that used in s2bin.c for generation of asidsp.bin
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*/
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/*#ifndef DISABLE_PRAGMA_PACK1 */
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/*#pragma pack(push, 1) */
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/*#endif */
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struct code_header {
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/** Size in bytes including header */
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u32 size;
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/** File type tag "CODE" == 0x45444F43 */
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u32 type;
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/** Adapter model number */
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u32 adapter;
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/** Firmware version*/
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u32 version;
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/** Data checksum */
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u32 checksum;
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};
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/*#ifndef DISABLE_PRAGMA_PACK1 */
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/*#pragma pack(pop) */
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/*#endif */
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/*? Don't need the pragmas? */
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compile_time_assert((sizeof(struct code_header) == 20), code_header_size);
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/** Descriptor for dspcode from firmware loader */
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struct dsp_code {
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/** copy of file header */
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struct code_header header;
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/** Expected number of words in the whole dsp code,INCL header */
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u32 block_length;
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/** Number of words read so far */
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u32 word_count;
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/** internal state of DSP code reader */
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struct dsp_code_private *pvt;
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};
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/** Prepare *psDspCode to refer to the requested adapter's firmware.
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Code file name is obtained from HpiOs_GetDspCodePath
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\return 0 for success, or error code if requested code is not available
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*/
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short hpi_dsp_code_open(
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/** Code identifier, usually adapter family */
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u32 adapter, void *pci_dev,
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/** Pointer to DSP code control structure */
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struct dsp_code *ps_dsp_code,
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/** Pointer to dword to receive OS specific error code */
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u32 *pos_error_code);
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/** Close the DSP code file */
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void hpi_dsp_code_close(struct dsp_code *ps_dsp_code);
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/** Rewind to the beginning of the DSP code file (for verify) */
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void hpi_dsp_code_rewind(struct dsp_code *ps_dsp_code);
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/** Read one word from the dsp code file
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\return 0 for success, or error code if eof, or block length exceeded
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*/
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short hpi_dsp_code_read_word(struct dsp_code *ps_dsp_code,
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/**< DSP code descriptor */
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u32 *pword /**< Where to store the read word */
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);
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/** Get a block of dsp code into an internal buffer, and provide a pointer to
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that buffer. (If dsp code is already an array in memory, it is referenced,
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not copied.)
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\return Error if requested number of words are not available
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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 *ps_dsp_code,
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/* Pointer to store (Pointer to code buffer) */
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u32 **ppblock);
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#endif
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