1/*
  2 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
  3 * Author: Rob Clark <rob@ti.com>
  4 *         Andy Gross <andy.gross@ti.com>
  5 *
  6 * This program is free software; you can redistribute it and/or
  7 * modify it under the terms of the GNU General Public License as
  8 * published by the Free Software Foundation version 2.
  9 *
 10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 11 * kind, whether express or implied; without even the implied warranty
 12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13 * GNU General Public License for more details.
 14 */
 15#ifndef OMAP_DMM_TILER_H
 16#define OMAP_DMM_TILER_H
 17
 18#include "omap_drv.h"
 19#include "tcm.h"
 20
 21enum tiler_fmt {
 22	TILFMT_8BIT = 0,
 23	TILFMT_16BIT,
 24	TILFMT_32BIT,
 25	TILFMT_PAGE,
 26	TILFMT_NFORMATS
 27};
 28
 29struct pat_area {
 30	u32 x0:8;
 31	u32 y0:8;
 32	u32 x1:8;
 33	u32 y1:8;
 34};
 35
 36struct tiler_block {
 37	struct list_head alloc_node;	/* node for global block list */
 38	struct tcm_area area;		/* area */
 39	enum tiler_fmt fmt;		/* format */
 40};
 41
 42/* bits representing the same slot in DMM-TILER hw-block */
 43#define SLOT_WIDTH_BITS         6
 44#define SLOT_HEIGHT_BITS        6
 45
 46/* bits reserved to describe coordinates in DMM-TILER hw-block */
 47#define CONT_WIDTH_BITS         14
 48#define CONT_HEIGHT_BITS        13
 49
 50/* calculated constants */
 51#define TILER_PAGE              (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
 52#define TILER_WIDTH             (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
 53#define TILER_HEIGHT            (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
 54
 55/*
 56Table 15-11. Coding and Description of TILER Orientations
 57S Y X	Description				Alternate description
 580 0 0	0-degree view				Natural view
 590 0 1	0-degree view with vertical mirror 	180-degree view with horizontal mirror
 600 1 0	0-degree view with horizontal mirror 	180-degree view with vertical mirror
 610 1 1	180-degree view
 621 0 0	90-degree view with vertical mirror	270-degree view with horizontal mirror
 631 0 1	270-degree view
 641 1 0	90-degree view
 651 1 1	90-degree view with horizontal mirror	270-degree view with vertical mirror
 66 */
 67#define MASK_XY_FLIP		(1 << 31)
 68#define MASK_Y_INVERT		(1 << 30)
 69#define MASK_X_INVERT		(1 << 29)
 70#define SHIFT_ACC_MODE		27
 71#define MASK_ACC_MODE		3
 72
 73#define MASK(bits) ((1 << (bits)) - 1)
 74
 75#define TILVIEW_8BIT    0x60000000u
 76#define TILVIEW_16BIT   (TILVIEW_8BIT  + VIEW_SIZE)
 77#define TILVIEW_32BIT   (TILVIEW_16BIT + VIEW_SIZE)
 78#define TILVIEW_PAGE    (TILVIEW_32BIT + VIEW_SIZE)
 79#define TILVIEW_END     (TILVIEW_PAGE  + VIEW_SIZE)
 80
 81/* create tsptr by adding view orientation and access mode */
 82#define TIL_ADDR(x, orient, a)\
 83	((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
 84
 85#ifdef CONFIG_DEBUG_FS
 86int tiler_map_show(struct seq_file *s, void *arg);
 87#endif
 88
 89/* pin/unpin */
 90int tiler_pin(struct tiler_block *block, struct page **pages,
 91		u32 npages, u32 roll, bool wait);
 92int tiler_unpin(struct tiler_block *block);
 93
 94/* reserve/release */
 95struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, u16 w, u16 h,
 96				u16 align);
 97struct tiler_block *tiler_reserve_1d(size_t size);
 98int tiler_release(struct tiler_block *block);
 99
100/* utilities */
101dma_addr_t tiler_ssptr(struct tiler_block *block);
102dma_addr_t tiler_tsptr(struct tiler_block *block, u32 orient,
103		u32 x, u32 y);
104u32 tiler_stride(enum tiler_fmt fmt, u32 orient);
105size_t tiler_size(enum tiler_fmt fmt, u16 w, u16 h);
106size_t tiler_vsize(enum tiler_fmt fmt, u16 w, u16 h);
107void tiler_align(enum tiler_fmt fmt, u16 *w, u16 *h);
108u32 tiler_get_cpu_cache_flags(void);
109bool dmm_is_available(void);
110
111extern struct platform_driver omap_dmm_driver;
112
113/* GEM bo flags -> tiler fmt */
114static inline enum tiler_fmt gem2fmt(u32 flags)
115{
116	switch (flags & OMAP_BO_TILED_MASK) {
117	case OMAP_BO_TILED_8:
118		return TILFMT_8BIT;
119	case OMAP_BO_TILED_16:
120		return TILFMT_16BIT;
121	case OMAP_BO_TILED_32:
122		return TILFMT_32BIT;
123	default:
124		return TILFMT_PAGE;
125	}
126}
127
128static inline bool validfmt(enum tiler_fmt fmt)
129{
130	switch (fmt) {
131	case TILFMT_8BIT:
132	case TILFMT_16BIT:
133	case TILFMT_32BIT:
134	case TILFMT_PAGE:
135		return true;
136	default:
137		return false;
138	}
139}
140
141#endif