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 "omap_drv.h"
20 #include "tcm.h"
21
22 enum tiler_fmt {
23 TILFMT_8BIT = 0,
24 TILFMT_16BIT,
25 TILFMT_32BIT,
26 TILFMT_PAGE,
27 TILFMT_NFORMATS
28 };
29
30 struct pat_area {
31 u32 x0:8;
32 u32 y0:8;
33 u32 x1:8;
34 u32 y1:8;
35 };
36
37 struct tiler_block {
38 struct list_head alloc_node; /* node for global block list */
39 struct tcm_area area; /* area */
40 enum tiler_fmt fmt; /* format */
41 };
42
43 /* bits representing the same slot in DMM-TILER hw-block */
44 #define SLOT_WIDTH_BITS 6
45 #define SLOT_HEIGHT_BITS 6
46
47 /* bits reserved to describe coordinates in DMM-TILER hw-block */
48 #define CONT_WIDTH_BITS 14
49 #define CONT_HEIGHT_BITS 13
50
51 /* calculated constants */
52 #define TILER_PAGE (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
53 #define TILER_WIDTH (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
54 #define TILER_HEIGHT (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
55
56 /* tiler space addressing bitfields */
57 #define MASK_XY_FLIP (1 << 31)
58 #define MASK_Y_INVERT (1 << 30)
59 #define MASK_X_INVERT (1 << 29)
60 #define SHIFT_ACC_MODE 27
61 #define MASK_ACC_MODE 3
62
63 #define MASK(bits) ((1 << (bits)) - 1)
64
65 #define TILVIEW_8BIT 0x60000000u
66 #define TILVIEW_16BIT (TILVIEW_8BIT + VIEW_SIZE)
67 #define TILVIEW_32BIT (TILVIEW_16BIT + VIEW_SIZE)
68 #define TILVIEW_PAGE (TILVIEW_32BIT + VIEW_SIZE)
69 #define TILVIEW_END (TILVIEW_PAGE + VIEW_SIZE)
70
71 /* create tsptr by adding view orientation and access mode */
72 #define TIL_ADDR(x, orient, a)\
73 ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
74
75 /* externally accessible functions */
76 int omap_dmm_init(struct drm_device *dev);
77 int omap_dmm_remove(void);
78
79 #ifdef CONFIG_DEBUG_FS
80 int tiler_map_show(struct seq_file *s, void *arg);
81 #endif
82
83 /* pin/unpin */
84 int tiler_pin(struct tiler_block *block, struct page **pages,
85 uint32_t npages, uint32_t roll, bool wait);
86 int tiler_unpin(struct tiler_block *block);
87
88 /* reserve/release */
89 struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
90 uint16_t align);
91 struct tiler_block *tiler_reserve_1d(size_t size);
92 int tiler_release(struct tiler_block *block);
93
94 /* utilities */
95 dma_addr_t tiler_ssptr(struct tiler_block *block);
96 uint32_t tiler_stride(enum tiler_fmt fmt);
97 size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
98 size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
99 void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
100
101
102 /* GEM bo flags -> tiler fmt */
gem2fmt(uint32_t flags)103 static inline enum tiler_fmt gem2fmt(uint32_t flags)
104 {
105 switch (flags & OMAP_BO_TILED) {
106 case OMAP_BO_TILED_8:
107 return TILFMT_8BIT;
108 case OMAP_BO_TILED_16:
109 return TILFMT_16BIT;
110 case OMAP_BO_TILED_32:
111 return TILFMT_32BIT;
112 default:
113 return TILFMT_PAGE;
114 }
115 }
116
validfmt(enum tiler_fmt fmt)117 static inline bool validfmt(enum tiler_fmt fmt)
118 {
119 switch (fmt) {
120 case TILFMT_8BIT:
121 case TILFMT_16BIT:
122 case TILFMT_32BIT:
123 case TILFMT_PAGE:
124 return true;
125 default:
126 return false;
127 }
128 }
129
130 struct omap_dmm_platform_data {
131 void __iomem *base;
132 int irq;
133 };
134
135 #endif
136