1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 4 *  GUS's memory access via proc filesystem
 5 */
 6
 7#include <linux/slab.h>
 8#include <sound/core.h>
 9#include <sound/gus.h>
10#include <sound/info.h>
11
12struct gus_proc_private {
13	int rom;		/* data are in ROM */
14	unsigned int address;
15	unsigned int size;
16	struct snd_gus_card * gus;
17};
18
19static 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)
23{
24	struct gus_proc_private *priv = entry->private_data;
25	struct snd_gus_card *gus = priv->gus;
26	int err;
27
28	err = snd_gus_dram_read(gus, buf, pos, count, priv->rom);
29	if (err < 0)
30		return err;
31	return count;
32}			
33
34static void snd_gf1_mem_proc_free(struct snd_info_entry *entry)
35{
36	struct gus_proc_private *priv = entry->private_data;
37	kfree(priv);
38}
39
40static const struct snd_info_entry_ops snd_gf1_mem_proc_ops = {
41	.read = snd_gf1_mem_proc_dump,
42};
43
44int snd_gf1_mem_proc_init(struct snd_gus_card * gus)
45{
46	int idx;
47	char name[16];
48	struct gus_proc_private *priv;
49	struct snd_info_entry *entry;
50
51	for (idx = 0; idx < 4; idx++) {
52		if (gus->gf1.mem_alloc.banks_8[idx].size > 0) {
53			priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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)) {
70			priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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}

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 4 *  GUS's memory access via proc filesystem
 5 */
 6
 7#include <linux/slab.h>
 8#include <sound/core.h>
 9#include <sound/gus.h>
10#include <sound/info.h>
11
12struct gus_proc_private {
13	int rom;		/* data are in ROM */
14	unsigned int address;
15	unsigned int size;
16	struct snd_gus_card * gus;
17};
18
19static 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)
23{
24	struct gus_proc_private *priv = entry->private_data;
25	struct snd_gus_card *gus = priv->gus;
26	int err;
27
28	err = snd_gus_dram_read(gus, buf, pos, count, priv->rom);
29	if (err < 0)
30		return err;
31	return count;
32}			
33
34static void snd_gf1_mem_proc_free(struct snd_info_entry *entry)
35{
36	struct gus_proc_private *priv = entry->private_data;
37	kfree(priv);
38}
39
40static const struct snd_info_entry_ops snd_gf1_mem_proc_ops = {
41	.read = snd_gf1_mem_proc_dump,
42};
43
44int snd_gf1_mem_proc_init(struct snd_gus_card * gus)
45{
46	int idx;
47	char name[16];
48	struct gus_proc_private *priv;
49	struct snd_info_entry *entry;
50
51	for (idx = 0; idx < 4; idx++) {
52		if (gus->gf1.mem_alloc.banks_8[idx].size > 0) {
53			priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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)) {
70			priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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}