1d595d2a21
Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/***********************************************************************/
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/**
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AudioScience HPI driver
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Copyright (C) 1997-2010 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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hpi_dspcode_defines HPI DSP code loading method
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Define exactly one of these to select how the DSP code is supplied to
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the adapter.
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End users writing applications that use the HPI interface do not have to
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use any of the below defines; they are only necessary for building drivers
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HPI_DSPCODE_FILE:
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DSP code is supplied as a file that is opened and read from by the driver.
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HPI_DSPCODE_FIRMWARE:
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DSP code is read using the hotplug firmware loader module.
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Only valid when compiling the HPI kernel driver under Linux.
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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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#ifndef DISABLE_PRAGMA_PACK1
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#pragma pack(push, 1)
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#endif
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/** Descriptor for dspcode from firmware loader */
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struct dsp_code {
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/** Firmware descriptor */
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const struct firmware *ps_firmware;
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struct pci_dev *ps_dev;
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/** Expected number of words in the whole dsp code,INCL header */
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long int block_length;
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/** Number of words read so far */
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long int word_count;
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/** Version read from dsp code file */
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u32 version;
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/** CRC read from dsp code file */
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u32 crc;
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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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/** Prepare *psDspCode to refer to the requuested adapter.
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Searches the file, or selects the appropriate linked array
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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,
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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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