1 /* 2 * Tegra host1x Channel 3 * 4 * Copyright (c) 2010-2013, NVIDIA Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #ifndef __HOST1X_CHANNEL_H 20 #define __HOST1X_CHANNEL_H 21 22 #include <linux/io.h> 23 #include <linux/kref.h> 24 25 #include "cdma.h" 26 27 struct host1x; 28 struct host1x_channel; 29 30 struct host1x_channel_list { 31 struct host1x_channel *channels; 32 unsigned long *allocated_channels; 33 }; 34 35 struct host1x_channel { 36 struct kref refcount; 37 unsigned int id; 38 struct mutex submitlock; 39 void __iomem *regs; 40 struct device *dev; 41 struct host1x_cdma cdma; 42 }; 43 44 /* channel list operations */ 45 int host1x_channel_list_init(struct host1x_channel_list *chlist, 46 unsigned int num_channels); 47 void host1x_channel_list_free(struct host1x_channel_list *chlist); 48 struct host1x_channel *host1x_channel_get_index(struct host1x *host, 49 unsigned int index); 50 51 #endif 52