Commit | Line | Data |
---|---|---|
07d7fe7b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
43986431 | 2 | /*********************************************************************** |
719f82d3 EB |
3 | |
4 | AudioScience HPI driver | |
43986431 EB |
5 | Functions for reading DSP code using hotplug firmware loader |
6 | ||
7 | Copyright (C) 1997-2014 AudioScience Inc. <support@audioscience.com> | |
719f82d3 | 8 | |
719f82d3 | 9 | |
43986431 | 10 | ***********************************************************************/ |
719f82d3 EB |
11 | #define SOURCEFILE_NAME "hpidspcd.c" |
12 | #include "hpidspcd.h" | |
13 | #include "hpidebug.h" | |
f6baaec2 | 14 | #include "hpi_version.h" |
719f82d3 | 15 | |
95a4c6e7 EB |
16 | struct dsp_code_private { |
17 | /** Firmware descriptor */ | |
18 | const struct firmware *firmware; | |
19 | struct pci_dev *dev; | |
719f82d3 EB |
20 | }; |
21 | ||
719f82d3 | 22 | /*-------------------------------------------------------------------*/ |
95a4c6e7 EB |
23 | short hpi_dsp_code_open(u32 adapter, void *os_data, struct dsp_code *dsp_code, |
24 | u32 *os_error_code) | |
719f82d3 | 25 | { |
95a4c6e7 EB |
26 | const struct firmware *firmware; |
27 | struct pci_dev *dev = os_data; | |
719f82d3 EB |
28 | struct code_header header; |
29 | char fw_name[20]; | |
dc889f18 | 30 | short err_ret = HPI_ERROR_DSP_FILE_NOT_FOUND; |
719f82d3 EB |
31 | int err; |
32 | ||
33 | sprintf(fw_name, "asihpi/dsp%04x.bin", adapter); | |
719f82d3 | 34 | |
95a4c6e7 | 35 | err = request_firmware(&firmware, fw_name, &dev->dev); |
5ed15daf | 36 | |
95a4c6e7 | 37 | if (err || !firmware) { |
4ee3bffc JP |
38 | dev_err(&dev->dev, "%d, request_firmware failed for %s\n", |
39 | err, fw_name); | |
719f82d3 EB |
40 | goto error1; |
41 | } | |
95a4c6e7 | 42 | if (firmware->size < sizeof(header)) { |
4ee3bffc | 43 | dev_err(&dev->dev, "Header size too small %s\n", fw_name); |
719f82d3 EB |
44 | goto error2; |
45 | } | |
95a4c6e7 EB |
46 | memcpy(&header, firmware->data, sizeof(header)); |
47 | ||
48 | if ((header.type != 0x45444F43) || /* "CODE" */ | |
49 | (header.adapter != adapter) | |
50 | || (header.size != firmware->size)) { | |
4ee3bffc | 51 | dev_err(&dev->dev, |
f6baaec2 EB |
52 | "Invalid firmware header size %d != file %zd\n", |
53 | header.size, firmware->size); | |
719f82d3 EB |
54 | goto error2; |
55 | } | |
56 | ||
43986431 EB |
57 | if (HPI_VER_MAJOR(header.version) != HPI_VER_MAJOR(HPI_VER)) { |
58 | /* Major version change probably means Host-DSP protocol change */ | |
59 | dev_err(&dev->dev, | |
60 | "Incompatible firmware version DSP image %X != Driver %X\n", | |
4ee3bffc | 61 | header.version, HPI_VER); |
719f82d3 EB |
62 | goto error2; |
63 | } | |
64 | ||
f6baaec2 | 65 | if (header.version != HPI_VER) { |
43986431 EB |
66 | dev_warn(&dev->dev, |
67 | "Firmware version mismatch: DSP image %X != Driver %X\n", | |
68 | header.version, HPI_VER); | |
719f82d3 EB |
69 | } |
70 | ||
5ed15daf | 71 | HPI_DEBUG_LOG(DEBUG, "dsp code %s opened\n", fw_name); |
95a4c6e7 | 72 | dsp_code->pvt = kmalloc(sizeof(*dsp_code->pvt), GFP_KERNEL); |
dc889f18 JJ |
73 | if (!dsp_code->pvt) { |
74 | err_ret = HPI_ERROR_MEMORY_ALLOC; | |
75 | goto error2; | |
76 | } | |
95a4c6e7 EB |
77 | |
78 | dsp_code->pvt->dev = dev; | |
79 | dsp_code->pvt->firmware = firmware; | |
80 | dsp_code->header = header; | |
81 | dsp_code->block_length = header.size / sizeof(u32); | |
82 | dsp_code->word_count = sizeof(header) / sizeof(u32); | |
719f82d3 EB |
83 | return 0; |
84 | ||
85 | error2: | |
95a4c6e7 | 86 | release_firmware(firmware); |
719f82d3 | 87 | error1: |
95a4c6e7 | 88 | dsp_code->block_length = 0; |
dc889f18 | 89 | return err_ret; |
719f82d3 EB |
90 | } |
91 | ||
92 | /*-------------------------------------------------------------------*/ | |
95a4c6e7 | 93 | void hpi_dsp_code_close(struct dsp_code *dsp_code) |
719f82d3 | 94 | { |
50d5f773 EB |
95 | HPI_DEBUG_LOG(DEBUG, "dsp code closed\n"); |
96 | release_firmware(dsp_code->pvt->firmware); | |
95a4c6e7 | 97 | kfree(dsp_code->pvt); |
719f82d3 EB |
98 | } |
99 | ||
100 | /*-------------------------------------------------------------------*/ | |
95a4c6e7 | 101 | void hpi_dsp_code_rewind(struct dsp_code *dsp_code) |
719f82d3 EB |
102 | { |
103 | /* Go back to start of data, after header */ | |
95a4c6e7 | 104 | dsp_code->word_count = sizeof(struct code_header) / sizeof(u32); |
719f82d3 EB |
105 | } |
106 | ||
107 | /*-------------------------------------------------------------------*/ | |
95a4c6e7 | 108 | short hpi_dsp_code_read_word(struct dsp_code *dsp_code, u32 *pword) |
719f82d3 | 109 | { |
95a4c6e7 | 110 | if (dsp_code->word_count + 1 > dsp_code->block_length) |
5ed15daf | 111 | return HPI_ERROR_DSP_FILE_FORMAT; |
719f82d3 | 112 | |
95a4c6e7 | 113 | *pword = ((u32 *)(dsp_code->pvt->firmware->data))[dsp_code-> |
719f82d3 | 114 | word_count]; |
95a4c6e7 | 115 | dsp_code->word_count++; |
719f82d3 EB |
116 | return 0; |
117 | } | |
118 | ||
119 | /*-------------------------------------------------------------------*/ | |
120 | short hpi_dsp_code_read_block(size_t words_requested, | |
95a4c6e7 | 121 | struct dsp_code *dsp_code, u32 **ppblock) |
719f82d3 | 122 | { |
95a4c6e7 | 123 | if (dsp_code->word_count + words_requested > dsp_code->block_length) |
719f82d3 EB |
124 | return HPI_ERROR_DSP_FILE_FORMAT; |
125 | ||
126 | *ppblock = | |
95a4c6e7 EB |
127 | ((u32 *)(dsp_code->pvt->firmware->data)) + |
128 | dsp_code->word_count; | |
129 | dsp_code->word_count += words_requested; | |
719f82d3 EB |
130 | return 0; |
131 | } |