diff options
Diffstat (limited to 'sound/pci/asihpi/hpidspcd.c')
| -rw-r--r-- | sound/pci/asihpi/hpidspcd.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/sound/pci/asihpi/hpidspcd.c b/sound/pci/asihpi/hpidspcd.c new file mode 100644 index 00000000000..9b10d9a5c25 --- /dev/null +++ b/sound/pci/asihpi/hpidspcd.c @@ -0,0 +1,172 @@ +/***********************************************************************/ +/*! + + AudioScience HPI driver + Copyright (C) 1997-2010 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 + +(Linux only:) If DSPCODE_FIRMWARE_LOADER is defined, code is read using +hotplug firmware loader from individual dsp code files + +If neither of the above is defined, code is read from linked arrays. +DSPCODE_ARRAY is defined. + +HPI_INCLUDE_**** must be defined +and the appropriate hzz?????.c or hex?????.c linked in + + */ +/***********************************************************************/ +#define SOURCEFILE_NAME "hpidspcd.c" +#include "hpidspcd.h" +#include "hpidebug.h" + +/** + Header structure for binary dsp code file (see asidsp.doc) + 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 { + u32 size; + char type[4]; + u32 adapter; + u32 version; + u32 crc; +}; + +#ifndef DISABLE_PRAGMA_PACK1 +#pragma pack(pop) +#endif + +#define HPI_VER_DECIMAL ((int)(HPI_VER_MAJOR(HPI_VER) * 10000 + \ + HPI_VER_MINOR(HPI_VER) * 100 + HPI_VER_RELEASE(HPI_VER))) + +/***********************************************************************/ +#include "linux/pci.h" +/*-------------------------------------------------------------------*/ +short hpi_dsp_code_open(u32 adapter, struct dsp_code *ps_dsp_code, + u32 *pos_error_code) +{ + const struct firmware *ps_firmware = ps_dsp_code->ps_firmware; + struct code_header header; + char fw_name[20]; + int err; + + sprintf(fw_name, "asihpi/dsp%04x.bin", adapter); + HPI_DEBUG_LOG(INFO, "requesting firmware for %s\n", fw_name); + + err = request_firmware(&ps_firmware, fw_name, + &ps_dsp_code->ps_dev->dev); + if (err != 0) { + HPI_DEBUG_LOG(ERROR, "%d, request_firmware failed for %s\n", + err, fw_name); + goto error1; + } + if (ps_firmware->size < sizeof(header)) { + HPI_DEBUG_LOG(ERROR, "header size too small %s\n", fw_name); + goto error2; + } + memcpy(&header, ps_firmware->data, sizeof(header)); + if (header.adapter != adapter) { + HPI_DEBUG_LOG(ERROR, "adapter type incorrect %4x != %4x\n", + header.adapter, adapter); + goto error2; + } + if (header.size != ps_firmware->size) { + HPI_DEBUG_LOG(ERROR, "code size wrong %d != %ld\n", + header.size, (unsigned long)ps_firmware->size); + goto error2; + } + + if (header.version / 10000 != HPI_VER_DECIMAL / 10000) { + HPI_DEBUG_LOG(ERROR, + "firmware major version mismatch " + "DSP image %d != driver %d\n", header.version, + HPI_VER_DECIMAL); + goto error2; + } + + if (header.version != HPI_VER_DECIMAL) { + HPI_DEBUG_LOG(WARNING, + "version mismatch DSP image %d != driver %d\n", + header.version, HPI_VER_DECIMAL); + /* goto error2; still allow driver to load */ + } + + HPI_DEBUG_LOG(INFO, "dsp code %s opened\n", fw_name); + ps_dsp_code->ps_firmware = ps_firmware; + ps_dsp_code->block_length = header.size / sizeof(u32); + ps_dsp_code->word_count = sizeof(header) / sizeof(u32); + ps_dsp_code->version = header.version; + ps_dsp_code->crc = header.crc; + return 0; + +error2: + release_firmware(ps_firmware); +error1: + ps_dsp_code->ps_firmware = NULL; + ps_dsp_code->block_length = 0; + return HPI_ERROR_DSP_FILE_NOT_FOUND; +} + +/*-------------------------------------------------------------------*/ +void hpi_dsp_code_close(struct dsp_code *ps_dsp_code) +{ + if (ps_dsp_code->ps_firmware != NULL) { + HPI_DEBUG_LOG(DEBUG, "dsp code closed\n"); + release_firmware(ps_dsp_code->ps_firmware); + ps_dsp_code->ps_firmware = NULL; + } +} + +/*-------------------------------------------------------------------*/ +void hpi_dsp_code_rewind(struct dsp_code *ps_dsp_code) +{ + /* Go back to start of data, after header */ + ps_dsp_code->word_count = sizeof(struct code_header) / sizeof(u32); +} + +/*-------------------------------------------------------------------*/ +short hpi_dsp_code_read_word(struct dsp_code *ps_dsp_code, u32 *pword) +{ + if (ps_dsp_code->word_count + 1 > ps_dsp_code->block_length) + return (HPI_ERROR_DSP_FILE_FORMAT); + + *pword = ((u32 *)(ps_dsp_code->ps_firmware->data))[ps_dsp_code-> + word_count]; + ps_dsp_code->word_count++; + return 0; +} + +/*-------------------------------------------------------------------*/ +short hpi_dsp_code_read_block(size_t words_requested, + struct dsp_code *ps_dsp_code, u32 **ppblock) +{ + if (ps_dsp_code->word_count + words_requested > + ps_dsp_code->block_length) + return HPI_ERROR_DSP_FILE_FORMAT; + + *ppblock = + ((u32 *)(ps_dsp_code->ps_firmware->data)) + + ps_dsp_code->word_count; + ps_dsp_code->word_count += words_requested; + return 0; +} |