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Diffstat (limited to 'sound/pci/asihpi/hpidspcd.h')
-rw-r--r--sound/pci/asihpi/hpidspcd.h106
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diff --git a/sound/pci/asihpi/hpidspcd.h b/sound/pci/asihpi/hpidspcd.h
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+++ b/sound/pci/asihpi/hpidspcd.h
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+/***********************************************************************/
+/**
+
+ 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 to load into DSP
+
+*/
+/***********************************************************************/
+#ifndef _HPIDSPCD_H_
+#define _HPIDSPCD_H_
+
+#include "hpi_internal.h"
+
+/** Header structure for dsp firmware file
+ This structure must match that used in s2bin.c for generation of asidsp.bin
+ */
+/*#ifndef DISABLE_PRAGMA_PACK1 */
+/*#pragma pack(push, 1) */
+/*#endif */
+struct code_header {
+ /** Size in bytes including header */
+ u32 size;
+ /** File type tag "CODE" == 0x45444F43 */
+ u32 type;
+ /** Adapter model number */
+ u32 adapter;
+ /** Firmware version*/
+ u32 version;
+ /** Data checksum */
+ u32 checksum;
+};
+/*#ifndef DISABLE_PRAGMA_PACK1 */
+/*#pragma pack(pop) */
+/*#endif */
+
+/*? Don't need the pragmas? */
+compile_time_assert((sizeof(struct code_header) == 20), code_header_size);
+
+/** Descriptor for dspcode from firmware loader */
+struct dsp_code {
+ /** copy of file header */
+ struct code_header header;
+ /** Expected number of words in the whole dsp code,INCL header */
+ u32 block_length;
+ /** Number of words read so far */
+ u32 word_count;
+
+ /** internal state of DSP code reader */
+ struct dsp_code_private *pvt;
+};
+
+/** Prepare *psDspCode to refer to the requested adapter's firmware.
+Code file name is obtained from HpiOs_GetDspCodePath
+
+\return 0 for success, or error code if requested code is not available
+*/
+short hpi_dsp_code_open(
+ /** Code identifier, usually adapter family */
+ u32 adapter, void *pci_dev,
+ /** Pointer to DSP code control structure */
+ struct dsp_code *ps_dsp_code,
+ /** Pointer to dword to receive OS specific error code */
+ u32 *pos_error_code);
+
+/** Close the DSP code file */
+void hpi_dsp_code_close(struct dsp_code *ps_dsp_code);
+
+/** Rewind to the beginning of the DSP code file (for verify) */
+void hpi_dsp_code_rewind(struct dsp_code *ps_dsp_code);
+
+/** Read one word from the dsp code file
+ \return 0 for success, or error code if eof, or block length exceeded
+*/
+short hpi_dsp_code_read_word(struct dsp_code *ps_dsp_code,
+ /**< DSP code descriptor */
+ u32 *pword /**< Where to store the read word */
+ );
+
+/** Get a block of dsp code into an internal buffer, and provide a pointer to
+that buffer. (If dsp code is already an array in memory, it is referenced,
+not copied.)
+
+\return Error if requested number of words are not available
+*/
+short hpi_dsp_code_read_block(size_t words_requested,
+ struct dsp_code *ps_dsp_code,
+ /* Pointer to store (Pointer to code buffer) */
+ u32 **ppblock);
+
+#endif