1 /*
2 *
3 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Rob Clark <rob@ti.com>
5 * Andy Gross <andy.gross@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation version 2.
10 *
11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
12 * kind, whether express or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16 #ifndef OMAP_DMM_TILER_H
17 #define OMAP_DMM_TILER_H
18
19 #include <plat/cpu.h>
20 #include "omap_drv.h"
21 #include "tcm.h"
22
23 enum tiler_fmt {
24 TILFMT_8BIT = 0,
25 TILFMT_16BIT,
26 TILFMT_32BIT,
27 TILFMT_PAGE,
28 TILFMT_NFORMATS
29 };
30
31 struct pat_area {
32 u32 x0:8;
33 u32 y0:8;
34 u32 x1:8;
35 u32 y1:8;
36 };
37
38 struct tiler_block {
39 struct list_head alloc_node; /* node for global block list */
40 struct tcm_area area; /* area */
41 enum tiler_fmt fmt; /* format */
42 };
43
44 /* bits representing the same slot in DMM-TILER hw-block */
45 #define SLOT_WIDTH_BITS 6
46 #define SLOT_HEIGHT_BITS 6
47
48 /* bits reserved to describe coordinates in DMM-TILER hw-block */
49 #define CONT_WIDTH_BITS 14
50 #define CONT_HEIGHT_BITS 13
51
52 /* calculated constants */
53 #define TILER_PAGE (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
54 #define TILER_WIDTH (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
55 #define TILER_HEIGHT (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
56
57 /* tiler space addressing bitfields */
58 #define MASK_XY_FLIP (1 << 31)
59 #define MASK_Y_INVERT (1 << 30)
60 #define MASK_X_INVERT (1 << 29)
61 #define SHIFT_ACC_MODE 27
62 #define MASK_ACC_MODE 3
63
64 #define MASK(bits) ((1 << (bits)) - 1)
65
66 #define TILVIEW_8BIT 0x60000000u
67 #define TILVIEW_16BIT (TILVIEW_8BIT + VIEW_SIZE)
68 #define TILVIEW_32BIT (TILVIEW_16BIT + VIEW_SIZE)
69 #define TILVIEW_PAGE (TILVIEW_32BIT + VIEW_SIZE)
70 #define TILVIEW_END (TILVIEW_PAGE + VIEW_SIZE)
71
72 /* create tsptr by adding view orientation and access mode */
73 #define TIL_ADDR(x, orient, a)\
74 ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
75
76 #ifdef CONFIG_DEBUG_FS
77 int tiler_map_show(struct seq_file *s, void *arg);
78 #endif
79
80 /* pin/unpin */
81 int tiler_pin(struct tiler_block *block, struct page **pages,
82 uint32_t npages, uint32_t roll, bool wait);
83 int tiler_unpin(struct tiler_block *block);
84
85 /* reserve/release */
86 struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
87 uint16_t align);
88 struct tiler_block *tiler_reserve_1d(size_t size);
89 int tiler_release(struct tiler_block *block);
90
91 /* utilities */
92 dma_addr_t tiler_ssptr(struct tiler_block *block);
93 uint32_t tiler_stride(enum tiler_fmt fmt);
94 size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
95 size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
96 void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
97 bool dmm_is_initialized(void);
98
99 extern struct platform_driver omap_dmm_driver;
100
101 /* GEM bo flags -> tiler fmt */
gem2fmt(uint32_t flags)102 static inline enum tiler_fmt gem2fmt(uint32_t flags)
103 {
104 switch (flags & OMAP_BO_TILED) {
105 case OMAP_BO_TILED_8:
106 return TILFMT_8BIT;
107 case OMAP_BO_TILED_16:
108 return TILFMT_16BIT;
109 case OMAP_BO_TILED_32:
110 return TILFMT_32BIT;
111 default:
112 return TILFMT_PAGE;
113 }
114 }
115
validfmt(enum tiler_fmt fmt)116 static inline bool validfmt(enum tiler_fmt fmt)
117 {
118 switch (fmt) {
119 case TILFMT_8BIT:
120 case TILFMT_16BIT:
121 case TILFMT_32BIT:
122 case TILFMT_PAGE:
123 return true;
124 default:
125 return false;
126 }
127 }
128
dmm_is_available(void)129 static inline int dmm_is_available(void)
130 {
131 return cpu_is_omap44xx();
132 }
133
134 #endif
135