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1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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* GUS's memory access via proc filesystem
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*/
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/gus.h>
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#include <sound/info.h>
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struct gus_proc_private {
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int rom; /* data are in ROM */
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unsigned int address;
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unsigned int size;
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struct snd_gus_card * gus;
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};
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static ssize_t snd_gf1_mem_proc_dump(struct snd_info_entry *entry,
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void *file_private_data,
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struct file *file, char __user *buf,
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size_t count, loff_t pos)
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{
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struct gus_proc_private *priv = entry->private_data;
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struct snd_gus_card *gus = priv->gus;
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int err;
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err = snd_gus_dram_read(gus, buf, pos, count, priv->rom);
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if (err < 0)
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return err;
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return count;
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}
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static void snd_gf1_mem_proc_free(struct snd_info_entry *entry)
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{
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struct gus_proc_private *priv = entry->private_data;
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kfree(priv);
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}
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static struct snd_info_entry_ops snd_gf1_mem_proc_ops = {
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.read = snd_gf1_mem_proc_dump,
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};
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int snd_gf1_mem_proc_init(struct snd_gus_card * gus)
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{
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int idx;
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char name[16];
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struct gus_proc_private *priv;
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struct snd_info_entry *entry;
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for (idx = 0; idx < 4; idx++) {
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if (gus->gf1.mem_alloc.banks_8[idx].size > 0) {
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (priv == NULL)
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return -ENOMEM;
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priv->gus = gus;
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sprintf(name, "gus-ram-%i", idx);
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if (! snd_card_proc_new(gus->card, name, &entry)) {
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entry->content = SNDRV_INFO_CONTENT_DATA;
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entry->private_data = priv;
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entry->private_free = snd_gf1_mem_proc_free;
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entry->c.ops = &snd_gf1_mem_proc_ops;
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priv->address = gus->gf1.mem_alloc.banks_8[idx].address;
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priv->size = entry->size = gus->gf1.mem_alloc.banks_8[idx].size;
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}
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}
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}
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for (idx = 0; idx < 4; idx++) {
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if (gus->gf1.rom_present & (1 << idx)) {
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (priv == NULL)
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return -ENOMEM;
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priv->rom = 1;
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priv->gus = gus;
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sprintf(name, "gus-rom-%i", idx);
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if (! snd_card_proc_new(gus->card, name, &entry)) {
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entry->content = SNDRV_INFO_CONTENT_DATA;
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entry->private_data = priv;
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entry->private_free = snd_gf1_mem_proc_free;
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entry->c.ops = &snd_gf1_mem_proc_ops;
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priv->address = idx * 4096 * 1024;
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priv->size = entry->size = gus->gf1.rom_memory;
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}
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}
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}
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return 0;
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}
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