diff options
Diffstat (limited to 'drivers/video/tegra/host/nvhost_channel.h')
| -rw-r--r-- | drivers/video/tegra/host/nvhost_channel.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/video/tegra/host/nvhost_channel.h b/drivers/video/tegra/host/nvhost_channel.h new file mode 100644 index 000000000000..ccd4a7537d9c --- /dev/null +++ b/drivers/video/tegra/host/nvhost_channel.h @@ -0,0 +1,119 @@ +/* + * drivers/video/tegra/host/nvhost_channel.h + * + * Tegra Graphics Host Channel + * + * Copyright (c) 2010-2011, NVIDIA Corporation. + * + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __NVHOST_CHANNEL_H +#define __NVHOST_CHANNEL_H + +#include "nvhost_cdma.h" +#include "nvhost_acm.h" +#include "nvhost_hwctx.h" + +#include <linux/cdev.h> +#include <linux/io.h> + +#define NVHOST_MAX_WAIT_CHECKS 256 +#define NVHOST_MAX_GATHERS 512 +#define NVHOST_MAX_HANDLES 1280 +#define NVHOST_MAX_POWERGATE_IDS 2 + +struct nvhost_master; +struct nvhost_waitchk; + +struct nvhost_channeldesc { + const char *name; + u32 syncpts; + u32 waitbases; + u32 modulemutexes; + u32 class; + bool exclusive; + bool keepalive; + bool waitbasesync; + struct nvhost_moduledesc module; +}; + +struct nvhost_channel { + int refcount; + int chid; + u32 syncpt_id; + struct mutex reflock; + struct mutex submitlock; + void __iomem *aperture; + struct nvhost_master *dev; + const struct nvhost_channeldesc *desc; + struct nvhost_hwctx *cur_ctx; + struct device *node; + struct cdev cdev; + struct nvhost_hwctx_handler ctxhandler; + struct nvhost_module mod; + struct nvhost_cdma cdma; +}; + +struct nvhost_op_pair { + u32 op1; + u32 op2; +}; + +struct nvhost_cpuinterrupt { + u32 syncpt_val; + void *intr_data; +}; + +int nvhost_channel_init( + struct nvhost_channel *ch, + struct nvhost_master *dev, int index); + +int nvhost_channel_submit( + struct nvhost_channel *channel, + struct nvhost_hwctx *hwctx, + struct nvmap_client *user_nvmap, + u32 *gather, + u32 *gather_end, + struct nvhost_waitchk *waitchk, + struct nvhost_waitchk *waitchk_end, + u32 waitchk_mask, + struct nvmap_handle **unpins, + int nr_unpins, + u32 syncpt_id, + u32 syncpt_incrs, + struct nvhost_userctx_timeout *timeout_ctx, + u32 priority, + u32 *syncpt_value, + bool null_kickoff); + +struct nvhost_channel *nvhost_getchannel(struct nvhost_channel *ch); +void nvhost_putchannel(struct nvhost_channel *ch, struct nvhost_hwctx *ctx); +void nvhost_channel_suspend(struct nvhost_channel *ch); + +#define channel_cdma_op(ch) (ch->dev->op.cdma) +#define channel_op(ch) (ch->dev->op.channel) +#define host_channel_op(host) (host->op.channel) + +int nvhost_channel_drain_read_fifo(void __iomem *chan_regs, + u32 *ptr, unsigned int count, unsigned int *pending); + +int nvhost_channel_read_3d_reg( + struct nvhost_channel *channel, + struct nvhost_hwctx *hwctx, + u32 offset, + u32 *value); + +#endif |