1/*
2 * Copyright (C) 2011 Texas Instruments Incorporated - http://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
142