Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/drivers/opl4/opl4_proc.c b/sound/drivers/opl4/opl4_proc.c
new file mode 100644
index 0000000..6a14862
--- /dev/null
+++ b/sound/drivers/opl4/opl4_proc.c
@@ -0,0 +1,166 @@
+/*
+ * Functions for the OPL4 proc file
+ * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de>
+ *
+ * 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 "opl4_local.h"
+#include <linux/vmalloc.h>
+#include <sound/info.h>
+
+#ifdef CONFIG_PROC_FS
+
+static int snd_opl4_mem_proc_open(snd_info_entry_t *entry,
+ unsigned short mode, void **file_private_data)
+{
+ opl4_t *opl4 = entry->private_data;
+
+ down(&opl4->access_mutex);
+ if (opl4->memory_access) {
+ up(&opl4->access_mutex);
+ return -EBUSY;
+ }
+ opl4->memory_access++;
+ up(&opl4->access_mutex);
+ return 0;
+}
+
+static int snd_opl4_mem_proc_release(snd_info_entry_t *entry,
+ unsigned short mode, void *file_private_data)
+{
+ opl4_t *opl4 = entry->private_data;
+
+ down(&opl4->access_mutex);
+ opl4->memory_access--;
+ up(&opl4->access_mutex);
+ return 0;
+}
+
+static long snd_opl4_mem_proc_read(snd_info_entry_t *entry, void *file_private_data,
+ struct file *file, char __user *_buf,
+ unsigned long count, unsigned long pos)
+{
+ opl4_t *opl4 = entry->private_data;
+ long size;
+ char* buf;
+
+ size = count;
+ if (pos + size > entry->size)
+ size = entry->size - pos;
+ if (size > 0) {
+ buf = vmalloc(size);
+ if (!buf)
+ return -ENOMEM;
+ snd_opl4_read_memory(opl4, buf, pos, size);
+ if (copy_to_user(_buf, buf, size)) {
+ vfree(buf);
+ return -EFAULT;
+ }
+ vfree(buf);
+ return size;
+ }
+ return 0;
+}
+
+static long snd_opl4_mem_proc_write(snd_info_entry_t *entry, void *file_private_data,
+ struct file *file, const char __user *_buf,
+ unsigned long count, unsigned long pos)
+{
+ opl4_t *opl4 = entry->private_data;
+ long size;
+ char *buf;
+
+ size = count;
+ if (pos + size > entry->size)
+ size = entry->size - pos;
+ if (size > 0) {
+ buf = vmalloc(size);
+ if (!buf)
+ return -ENOMEM;
+ if (copy_from_user(buf, _buf, size)) {
+ vfree(buf);
+ return -EFAULT;
+ }
+ snd_opl4_write_memory(opl4, buf, pos, size);
+ vfree(buf);
+ return size;
+ }
+ return 0;
+}
+
+static long long snd_opl4_mem_proc_llseek(snd_info_entry_t *entry, void *file_private_data,
+ struct file *file, long long offset, int orig)
+{
+ switch (orig) {
+ case 0: /* SEEK_SET */
+ file->f_pos = offset;
+ break;
+ case 1: /* SEEK_CUR */
+ file->f_pos += offset;
+ break;
+ case 2: /* SEEK_END, offset is negative */
+ file->f_pos = entry->size + offset;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (file->f_pos > entry->size)
+ file->f_pos = entry->size;
+ return file->f_pos;
+}
+
+static struct snd_info_entry_ops snd_opl4_mem_proc_ops = {
+ .open = snd_opl4_mem_proc_open,
+ .release = snd_opl4_mem_proc_release,
+ .read = snd_opl4_mem_proc_read,
+ .write = snd_opl4_mem_proc_write,
+ .llseek = snd_opl4_mem_proc_llseek,
+};
+
+int snd_opl4_create_proc(opl4_t *opl4)
+{
+ snd_info_entry_t *entry;
+
+ entry = snd_info_create_card_entry(opl4->card, "opl4-mem", opl4->card->proc_root);
+ if (entry) {
+ if (opl4->hardware < OPL3_HW_OPL4_ML) {
+ /* OPL4 can access 4 MB external ROM/SRAM */
+ entry->mode |= S_IWUSR;
+ entry->size = 4 * 1024 * 1024;
+ } else {
+ /* OPL4-ML has 1 MB internal ROM */
+ entry->size = 1 * 1024 * 1024;
+ }
+ entry->content = SNDRV_INFO_CONTENT_DATA;
+ entry->c.ops = &snd_opl4_mem_proc_ops;
+ entry->module = THIS_MODULE;
+ entry->private_data = opl4;
+ if (snd_info_register(entry) < 0) {
+ snd_info_free_entry(entry);
+ entry = NULL;
+ }
+ }
+ opl4->proc_entry = entry;
+ return 0;
+}
+
+void snd_opl4_free_proc(opl4_t *opl4)
+{
+ if (opl4->proc_entry)
+ snd_info_unregister(opl4->proc_entry);
+}
+
+#endif /* CONFIG_PROC_FS */