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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 | 4 | * GUS's memory access via proc filesystem |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 LT |
7 | #include <linux/slab.h> |
8 | #include <sound/core.h> | |
9 | #include <sound/gus.h> | |
10 | #include <sound/info.h> | |
11 | ||
5e2da206 | 12 | struct gus_proc_private { |
1da177e4 LT |
13 | int rom; /* data are in ROM */ |
14 | unsigned int address; | |
15 | unsigned int size; | |
5e2da206 TI |
16 | struct snd_gus_card * gus; |
17 | }; | |
1da177e4 | 18 | |
24e4a121 TI |
19 | static ssize_t snd_gf1_mem_proc_dump(struct snd_info_entry *entry, |
20 | void *file_private_data, | |
21 | struct file *file, char __user *buf, | |
22 | size_t count, loff_t pos) | |
1da177e4 | 23 | { |
5e2da206 TI |
24 | struct gus_proc_private *priv = entry->private_data; |
25 | struct snd_gus_card *gus = priv->gus; | |
1da177e4 LT |
26 | int err; |
27 | ||
d97e1b78 TI |
28 | err = snd_gus_dram_read(gus, buf, pos, count, priv->rom); |
29 | if (err < 0) | |
30 | return err; | |
31 | return count; | |
1da177e4 LT |
32 | } |
33 | ||
5e2da206 | 34 | static void snd_gf1_mem_proc_free(struct snd_info_entry *entry) |
1da177e4 | 35 | { |
5e2da206 | 36 | struct gus_proc_private *priv = entry->private_data; |
1da177e4 LT |
37 | kfree(priv); |
38 | } | |
39 | ||
40 | static struct snd_info_entry_ops snd_gf1_mem_proc_ops = { | |
41 | .read = snd_gf1_mem_proc_dump, | |
1da177e4 LT |
42 | }; |
43 | ||
5e2da206 | 44 | int snd_gf1_mem_proc_init(struct snd_gus_card * gus) |
1da177e4 LT |
45 | { |
46 | int idx; | |
47 | char name[16]; | |
5e2da206 TI |
48 | struct gus_proc_private *priv; |
49 | struct snd_info_entry *entry; | |
1da177e4 LT |
50 | |
51 | for (idx = 0; idx < 4; idx++) { | |
52 | if (gus->gf1.mem_alloc.banks_8[idx].size > 0) { | |
9e76a76e | 53 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
1da177e4 LT |
54 | if (priv == NULL) |
55 | return -ENOMEM; | |
56 | priv->gus = gus; | |
57 | sprintf(name, "gus-ram-%i", idx); | |
58 | if (! snd_card_proc_new(gus->card, name, &entry)) { | |
59 | entry->content = SNDRV_INFO_CONTENT_DATA; | |
60 | entry->private_data = priv; | |
61 | entry->private_free = snd_gf1_mem_proc_free; | |
62 | entry->c.ops = &snd_gf1_mem_proc_ops; | |
63 | priv->address = gus->gf1.mem_alloc.banks_8[idx].address; | |
64 | priv->size = entry->size = gus->gf1.mem_alloc.banks_8[idx].size; | |
65 | } | |
66 | } | |
67 | } | |
68 | for (idx = 0; idx < 4; idx++) { | |
69 | if (gus->gf1.rom_present & (1 << idx)) { | |
9e76a76e | 70 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
1da177e4 LT |
71 | if (priv == NULL) |
72 | return -ENOMEM; | |
73 | priv->rom = 1; | |
74 | priv->gus = gus; | |
75 | sprintf(name, "gus-rom-%i", idx); | |
76 | if (! snd_card_proc_new(gus->card, name, &entry)) { | |
77 | entry->content = SNDRV_INFO_CONTENT_DATA; | |
78 | entry->private_data = priv; | |
79 | entry->private_free = snd_gf1_mem_proc_free; | |
80 | entry->c.ops = &snd_gf1_mem_proc_ops; | |
81 | priv->address = idx * 4096 * 1024; | |
82 | priv->size = entry->size = gus->gf1.rom_memory; | |
83 | } | |
84 | } | |
85 | } | |
86 | return 0; | |
87 | } |