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!

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 */