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/*
* _tiler.h
*
* TI TILER driver internal shared definitions.
*
* Author: Lajos Molnar <molnar@ti.com>
*
* Copyright (C) 2009-2011 Texas Instruments, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TILER_H
#define _TILER_H
#include <linux/kernel.h>
#include <mach/tiler.h>
#include "tcm.h"
#define TILER_FORMATS (TILFMT_MAX - TILFMT_MIN + 1)
/* per process (thread group) info */
struct process_info {
struct list_head list; /* other processes */
struct list_head groups; /* my groups */
struct list_head bufs; /* my registered buffers */
pid_t pid; /* really: thread group ID */
u32 refs; /* open tiler devices, 0 for processes
tracked via kernel APIs */
bool kernel; /* tracking kernel objects */
};
struct __buf_info {
struct list_head by_pid; /* list of buffers per pid */
struct tiler_buf_info buf_info;
struct mem_info *mi[TILER_MAX_NUM_BLOCKS]; /* blocks */
};
/* per group info (within a process) */
struct gid_info {
struct list_head by_pid; /* other groups */
struct list_head areas; /* all areas in this pid/gid */
struct list_head reserved; /* areas pre-reserved */
struct list_head onedim; /* all 1D areas in this pid/gid */
u32 gid; /* group ID */
int refs; /* instances directly using this ptr */
struct process_info *pi; /* parent */
};
/* info for an area reserved from a container */
struct area_info {
struct list_head by_gid; /* areas in this pid/gid */
struct list_head blocks; /* blocks in this area */
u32 nblocks; /* # of blocks in this area */
struct tcm_area area; /* area details */
struct gid_info *gi; /* link to parent, if still alive */
};
/* info for a block */
struct mem_info {
struct list_head global; /* reserved / global blocks */
struct tiler_block_t blk; /* block info */
struct tiler_pa_info pa; /* pinned physical pages */
struct tcm_area area;
int refs; /* number of times referenced */
bool alloced; /* still alloced */
struct list_head by_area; /* blocks in the same area / 1D */
void *parent; /* area info for 2D, else group info */
};
/* tiler geometry information */
struct tiler_geom {
u32 x_shft; /* unused X-bits (as part of bpp) */
u32 y_shft; /* unused Y-bits (as part of bpp) */
u32 bpp; /* bytes per pixel */
u32 slot_w; /* width of each slot (in pixels) */
u32 slot_h; /* height of each slot (in pixels) */
u32 bpp_m; /* modified bytes per pixel (=1 for page mode) */
};
/* methods and variables shared between source files */
struct tiler_ops {
/* block operations */
s32 (*alloc) (enum tiler_fmt fmt, u32 width, u32 height,
u32 key,
u32 gid, struct process_info *pi,
struct mem_info **info);
s32 (*pin) (enum tiler_fmt fmt, u32 width, u32 height,
u32 key, u32 gid, struct process_info *pi,
struct mem_info **info, u32 usr_addr);
void (*reserve_nv12) (u32 n, u32 width, u32 height,
u32 gid, struct process_info *pi);
void (*reserve) (u32 n, enum tiler_fmt fmt, u32 width, u32 height,
u32 gid, struct process_info *pi);
void (*unreserve) (u32 gid, struct process_info *pi);
/* block access operations */
struct mem_info * (*lock) (u32 key, u32 id, struct gid_info *gi);
struct mem_info * (*lock_by_ssptr) (u32 sys_addr);
void (*describe) (struct mem_info *i, struct tiler_block_info *blk);
void (*unlock_free) (struct mem_info *mi, bool free);
s32 (*lay_2d) (enum tiler_fmt fmt, u16 n, u16 w, u16 h, u16 band,
u16 align, struct gid_info *gi,
struct list_head *pos);
#ifdef CONFIG_TILER_ENABLE_NV12
s32 (*lay_nv12) (int n, u16 w, u16 w1, u16 h, struct gid_info *gi,
u8 *p);
#endif
/* group operations */
struct gid_info * (*get_gi) (struct process_info *pi, u32 gid);
void (*release_gi) (struct gid_info *gi);
void (*destroy_group) (struct gid_info *pi);
/* group access operations */
void (*add_reserved) (struct list_head *reserved, struct gid_info *gi);
void (*release) (struct list_head *reserved);
/* area operations */
s32 (*analize) (enum tiler_fmt fmt, u32 width, u32 height,
u16 *x_area, u16 *y_area, u16 *band, u16 *align);
/* process operations */
void (*cleanup) (void);
/* geometry operations */
void (*xy) (u32 ssptr, u32 *x, u32 *y);
u32 (*addr) (enum tiler_fmt fmt, u32 x, u32 y);
const struct tiler_geom * (*geom) (enum tiler_fmt fmt);
/* additional info */
const struct file_operations *fops;
#ifdef CONFIG_TILER_ENABLE_NV12
bool nv12_packed; /* whether NV12 is packed into same container */
#endif
u32 page; /* page size */
u32 width; /* container width */
u32 height; /* container height */
struct mutex mtx; /* mutex for interfaces and ioctls */
};
void tiler_iface_init(struct tiler_ops *tiler);
void tiler_geom_init(struct tiler_ops *tiler);
void tiler_reserve_init(struct tiler_ops *tiler);
void tiler_nv12_init(struct tiler_ops *tiler);
u32 tiler_best2pack(u16 o, u16 a, u16 b, u16 w, u16 *n, u16 *_area);
void tiler_ioctl_init(struct tiler_ops *tiler);
struct process_info *__get_pi(pid_t pid, bool kernel);
void _m_unregister_buf(struct __buf_info *_b);
s32 tiler_notify_event(int event, void *data);
void _m_free_process_info(struct process_info *pi);
struct process_info *__get_pi(pid_t pid, bool kernel);
#endif
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