1 /***********************************************************************/
4 AudioScience HPI driver
5 Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of version 2 of the GNU General Public License as
9 published by the Free Software Foundation;
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 Functions for reading DSP code using
22 hotplug firmware loader from individual dsp code files
24 /***********************************************************************/
25 #define SOURCEFILE_NAME "hpidspcd.c"
29 struct dsp_code_private {
30 /** Firmware descriptor */
31 const struct firmware *firmware;
35 #define HPI_VER_DECIMAL ((int)(HPI_VER_MAJOR(HPI_VER) * 10000 + \
36 HPI_VER_MINOR(HPI_VER) * 100 + HPI_VER_RELEASE(HPI_VER)))
38 /*-------------------------------------------------------------------*/
39 short hpi_dsp_code_open(u32 adapter, void *os_data, struct dsp_code *dsp_code,
42 const struct firmware *firmware;
43 struct pci_dev *dev = os_data;
44 struct code_header header;
48 sprintf(fw_name, "asihpi/dsp%04x.bin", adapter);
50 err = request_firmware(&firmware, fw_name, &dev->dev);
52 if (err || !firmware) {
53 dev_printk(KERN_ERR, &dev->dev,
54 "%d, request_firmware failed for %s\n", err,
58 if (firmware->size < sizeof(header)) {
59 dev_printk(KERN_ERR, &dev->dev, "Header size too small %s\n",
63 memcpy(&header, firmware->data, sizeof(header));
65 if ((header.type != 0x45444F43) || /* "CODE" */
66 (header.adapter != adapter)
67 || (header.size != firmware->size)) {
68 dev_printk(KERN_ERR, &dev->dev, "Invalid firmware file\n");
72 if ((header.version / 100 & ~1) != (HPI_VER_DECIMAL / 100 & ~1)) {
73 dev_printk(KERN_ERR, &dev->dev,
74 "Incompatible firmware version "
75 "DSP image %d != Driver %d\n", header.version,
80 if (header.version != HPI_VER_DECIMAL) {
81 dev_printk(KERN_WARNING, &dev->dev,
82 "Firmware: release version mismatch DSP image %d != Driver %d\n",
83 header.version, HPI_VER_DECIMAL);
86 HPI_DEBUG_LOG(DEBUG, "dsp code %s opened\n", fw_name);
87 dsp_code->pvt = kmalloc(sizeof(*dsp_code->pvt), GFP_KERNEL);
89 return HPI_ERROR_MEMORY_ALLOC;
91 dsp_code->pvt->dev = dev;
92 dsp_code->pvt->firmware = firmware;
93 dsp_code->header = header;
94 dsp_code->block_length = header.size / sizeof(u32);
95 dsp_code->word_count = sizeof(header) / sizeof(u32);
99 release_firmware(firmware);
101 dsp_code->block_length = 0;
102 return HPI_ERROR_DSP_FILE_NOT_FOUND;
105 /*-------------------------------------------------------------------*/
106 void hpi_dsp_code_close(struct dsp_code *dsp_code)
108 if (dsp_code->pvt->firmware) {
109 HPI_DEBUG_LOG(DEBUG, "dsp code closed\n");
110 release_firmware(dsp_code->pvt->firmware);
111 dsp_code->pvt->firmware = NULL;
113 kfree(dsp_code->pvt);
116 /*-------------------------------------------------------------------*/
117 void hpi_dsp_code_rewind(struct dsp_code *dsp_code)
119 /* Go back to start of data, after header */
120 dsp_code->word_count = sizeof(struct code_header) / sizeof(u32);
123 /*-------------------------------------------------------------------*/
124 short hpi_dsp_code_read_word(struct dsp_code *dsp_code, u32 *pword)
126 if (dsp_code->word_count + 1 > dsp_code->block_length)
127 return HPI_ERROR_DSP_FILE_FORMAT;
129 *pword = ((u32 *)(dsp_code->pvt->firmware->data))[dsp_code->
131 dsp_code->word_count++;
135 /*-------------------------------------------------------------------*/
136 short hpi_dsp_code_read_block(size_t words_requested,
137 struct dsp_code *dsp_code, u32 **ppblock)
139 if (dsp_code->word_count + words_requested > dsp_code->block_length)
140 return HPI_ERROR_DSP_FILE_FORMAT;
143 ((u32 *)(dsp_code->pvt->firmware->data)) +
144 dsp_code->word_count;
145 dsp_code->word_count += words_requested;