drm/omapdrm/omap_dmm_tiler.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
0004  * Author: Rob Clark <rob@ti.com>
0005  *         Andy Gross <andy.gross@ti.com>
0006  */
0007 #ifndef OMAP_DMM_TILER_H
0008 #define OMAP_DMM_TILER_H
0009
0010 #include "omap_drv.h"
0011 #include "tcm.h"
0012
0013 enum tiler_fmt {
0014     TILFMT_8BIT = 0,
0015     TILFMT_16BIT,
0016     TILFMT_32BIT,
0017     TILFMT_PAGE,
0018     TILFMT_NFORMATS
0019 };
0020
0021 struct pat_area {
0022     u32 x0:8;
0023     u32 y0:8;
0024     u32 x1:8;
0025     u32 y1:8;
0026 };
0027
0028 struct tiler_block {
0029     struct list_head alloc_node;    /* node for global block list */
0030     struct tcm_area area;       /* area */
0031     enum tiler_fmt fmt;     /* format */
0032 };
0033
0034 /* bits representing the same slot in DMM-TILER hw-block */
0035 #define SLOT_WIDTH_BITS         6
0036 #define SLOT_HEIGHT_BITS        6
0037
0038 /* bits reserved to describe coordinates in DMM-TILER hw-block */
0039 #define CONT_WIDTH_BITS         14
0040 #define CONT_HEIGHT_BITS        13
0041
0042 /* calculated constants */
0043 #define TILER_PAGE              (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
0044 #define TILER_WIDTH             (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
0045 #define TILER_HEIGHT            (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
0046
0047 /*
0048 Table 15-11. Coding and Description of TILER Orientations
0049 S Y X   Description             Alternate description
0050 0 0 0   0-degree view               Natural view
0051 0 0 1   0-degree view with vertical mirror  180-degree view with horizontal mirror
0052 0 1 0   0-degree view with horizontal mirror    180-degree view with vertical mirror
0053 0 1 1   180-degree view
0054 1 0 0   90-degree view with vertical mirror 270-degree view with horizontal mirror
0055 1 0 1   270-degree view
0056 1 1 0   90-degree view
0057 1 1 1   90-degree view with horizontal mirror   270-degree view with vertical mirror
0058  */
0059 #define MASK_XY_FLIP        (1 << 31)
0060 #define MASK_Y_INVERT       (1 << 30)
0061 #define MASK_X_INVERT       (1 << 29)
0062 #define SHIFT_ACC_MODE      27
0063 #define MASK_ACC_MODE       3
0064
0065 #define MASK(bits) ((1 << (bits)) - 1)
0066
0067 #define TILVIEW_8BIT    0x60000000u
0068 #define TILVIEW_16BIT   (TILVIEW_8BIT  + VIEW_SIZE)
0069 #define TILVIEW_32BIT   (TILVIEW_16BIT + VIEW_SIZE)
0070 #define TILVIEW_PAGE    (TILVIEW_32BIT + VIEW_SIZE)
0071 #define TILVIEW_END     (TILVIEW_PAGE  + VIEW_SIZE)
0072
0073 /* create tsptr by adding view orientation and access mode */
0074 #define TIL_ADDR(x, orient, a)\
0075     ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
0076
0077 #ifdef CONFIG_DEBUG_FS
0078 int tiler_map_show(struct seq_file *s, void *arg);
0079 #endif
0080
0081 /* pin/unpin */
0082 int tiler_pin(struct tiler_block *block, struct page **pages,
0083         u32 npages, u32 roll, bool wait);
0084 int tiler_unpin(struct tiler_block *block);
0085
0086 /* reserve/release */
0087 struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, u16 w, u16 h,
0088                 u16 align);
0089 struct tiler_block *tiler_reserve_1d(size_t size);
0090 int tiler_release(struct tiler_block *block);
0091
0092 /* utilities */
0093 dma_addr_t tiler_ssptr(struct tiler_block *block);
0094 dma_addr_t tiler_tsptr(struct tiler_block *block, u32 orient,
0095         u32 x, u32 y);
0096 u32 tiler_stride(enum tiler_fmt fmt, u32 orient);
0097 size_t tiler_size(enum tiler_fmt fmt, u16 w, u16 h);
0098 size_t tiler_vsize(enum tiler_fmt fmt, u16 w, u16 h);
0099 void tiler_align(enum tiler_fmt fmt, u16 *w, u16 *h);
0100 u32 tiler_get_cpu_cache_flags(void);
0101 bool dmm_is_available(void);
0102
0103 extern struct platform_driver omap_dmm_driver;
0104
0105 /* GEM bo flags -> tiler fmt */
0106 static inline enum tiler_fmt gem2fmt(u32 flags)
0107 {
0108     switch (flags & OMAP_BO_TILED_MASK) {
0109     case OMAP_BO_TILED_8:
0110         return TILFMT_8BIT;
0111     case OMAP_BO_TILED_16:
0112         return TILFMT_16BIT;
0113     case OMAP_BO_TILED_32:
0114         return TILFMT_32BIT;
0115     default:
0116         return TILFMT_PAGE;
0117     }
0118 }
0119
0120 static inline bool validfmt(enum tiler_fmt fmt)
0121 {
0122     switch (fmt) {
0123     case TILFMT_8BIT:
0124     case TILFMT_16BIT:
0125     case TILFMT_32BIT:
0126     case TILFMT_PAGE:
0127         return true;
0128     default:
0129         return false;
0130     }
0131 }
0132
0133 #endif