Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / isa / gus / gus_mem_proc.c

diff --git a/kernel/sound/isa/gus/gus_mem_proc.c b/kernel/sound/isa/gus/gus_mem_proc.c
new file mode 100644 (file)
index 0000000..2ccb3fa
--- /dev/null
+++ b/kernel/sound/isa/gus/gus_mem_proc.c
@@ -0,0 +1,102 @@
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *  GUS's memory access via proc filesystem
+ *
+ *
+ *   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
+ *
+ */
+
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/gus.h>
+#include <sound/info.h>
+
+struct gus_proc_private {
+       int rom;                /* data are in ROM */
+       unsigned int address;
+       unsigned int size;
+       struct snd_gus_card * gus;
+};
+
+static ssize_t snd_gf1_mem_proc_dump(struct snd_info_entry *entry,
+                                    void *file_private_data,
+                                    struct file *file, char __user *buf,
+                                    size_t count, loff_t pos)
+{
+       struct gus_proc_private *priv = entry->private_data;
+       struct snd_gus_card *gus = priv->gus;
+       int err;
+
+       err = snd_gus_dram_read(gus, buf, pos, count, priv->rom);
+       if (err < 0)
+               return err;
+       return count;
+}                      
+
+static void snd_gf1_mem_proc_free(struct snd_info_entry *entry)
+{
+       struct gus_proc_private *priv = entry->private_data;
+       kfree(priv);
+}
+
+static struct snd_info_entry_ops snd_gf1_mem_proc_ops = {
+       .read = snd_gf1_mem_proc_dump,
+};
+
+int snd_gf1_mem_proc_init(struct snd_gus_card * gus)
+{
+       int idx;
+       char name[16];
+       struct gus_proc_private *priv;
+       struct snd_info_entry *entry;
+
+       for (idx = 0; idx < 4; idx++) {
+               if (gus->gf1.mem_alloc.banks_8[idx].size > 0) {
+                       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+                       if (priv == NULL)
+                               return -ENOMEM;
+                       priv->gus = gus;
+                       sprintf(name, "gus-ram-%i", idx);
+                       if (! snd_card_proc_new(gus->card, name, &entry)) {
+                               entry->content = SNDRV_INFO_CONTENT_DATA;
+                               entry->private_data = priv;
+                               entry->private_free = snd_gf1_mem_proc_free;
+                               entry->c.ops = &snd_gf1_mem_proc_ops;
+                               priv->address = gus->gf1.mem_alloc.banks_8[idx].address;
+                               priv->size = entry->size = gus->gf1.mem_alloc.banks_8[idx].size;
+                       }
+               }
+       }
+       for (idx = 0; idx < 4; idx++) {
+               if (gus->gf1.rom_present & (1 << idx)) {
+                       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+                       if (priv == NULL)
+                               return -ENOMEM;
+                       priv->rom = 1;
+                       priv->gus = gus;
+                       sprintf(name, "gus-rom-%i", idx);
+                       if (! snd_card_proc_new(gus->card, name, &entry)) {
+                               entry->content = SNDRV_INFO_CONTENT_DATA;
+                               entry->private_data = priv;
+                               entry->private_free = snd_gf1_mem_proc_free;
+                               entry->c.ops = &snd_gf1_mem_proc_ops;
+                               priv->address = idx * 4096 * 1024;
+                               priv->size = entry->size = gus->gf1.rom_memory;
+                       }
+               }
+       }
+       return 0;
+}