drivers/staging/omapdrm/omap_dmm_tiler.h

   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 /*
  58 Table 15-11. Coding and Description of TILER Orientations
  59 S Y X   Description                             Alternate description
  60 0 0 0   0-degree view                           Natural view
  61 0 0 1   0-degree view with vertical mirror      180-degree view with horizontal mirror
  62 0 1 0   0-degree view with horizontal mirror    180-degree view with vertical mirror
  63 0 1 1   180-degree view
  64 1 0 0   90-degree view with vertical mirror     270-degree view with horizontal mirror
  65 1 0 1   270-degree view
  66 1 1 0   90-degree view
  67 1 1 1   90-degree view with horizontal mirror   270-degree view with vertical mirror
  68  */
  69 #define MASK_XY_FLIP            (1 << 31)
  70 #define MASK_Y_INVERT           (1 << 30)
  71 #define MASK_X_INVERT           (1 << 29)
  72 #define SHIFT_ACC_MODE          27
  73 #define MASK_ACC_MODE           3
  74
  75 #define MASK(bits) ((1 << (bits)) - 1)
  76
  77 #define TILVIEW_8BIT    0x60000000u
  78 #define TILVIEW_16BIT   (TILVIEW_8BIT  + VIEW_SIZE)
  79 #define TILVIEW_32BIT   (TILVIEW_16BIT + VIEW_SIZE)
  80 #define TILVIEW_PAGE    (TILVIEW_32BIT + VIEW_SIZE)
  81 #define TILVIEW_END     (TILVIEW_PAGE  + VIEW_SIZE)
  82
  83 /* create tsptr by adding view orientation and access mode */
  84 #define TIL_ADDR(x, orient, a)\
  85         ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
  86
  87 #ifdef CONFIG_DEBUG_FS
  88 int tiler_map_show(struct seq_file *s, void *arg);
  89 #endif
  90
  91 /* pin/unpin */
  92 int tiler_pin(struct tiler_block *block, struct page **pages,
  93                 uint32_t npages, uint32_t roll, bool wait);
  94 int tiler_unpin(struct tiler_block *block);
  95
  96 /* reserve/release */
  97 struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
  98                                 uint16_t align);
  99 struct tiler_block *tiler_reserve_1d(size_t size);
 100 int tiler_release(struct tiler_block *block);
 101
 102 /* utilities */
 103 dma_addr_t tiler_ssptr(struct tiler_block *block);
 104 dma_addr_t tiler_tsptr(struct tiler_block *block, uint32_t orient,
 105                 uint32_t x, uint32_t y);
 106 uint32_t tiler_stride(enum tiler_fmt fmt, uint32_t orient);
 107 size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 108 size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 109 void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
 110 bool dmm_is_initialized(void);
 111
 112 extern struct platform_driver omap_dmm_driver;
 113
 114 /* GEM bo flags -> tiler fmt */
 115 static inline enum tiler_fmt gem2fmt(uint32_t flags)
 116 {
 117         switch (flags & OMAP_BO_TILED) {
 118         case OMAP_BO_TILED_8:
 119                 return TILFMT_8BIT;
 120         case OMAP_BO_TILED_16:
 121                 return TILFMT_16BIT;
 122         case OMAP_BO_TILED_32:
 123                 return TILFMT_32BIT;
 124         default:
 125                 return TILFMT_PAGE;
 126         }
 127 }
 128
 129 static inline bool validfmt(enum tiler_fmt fmt)
 130 {
 131         switch (fmt) {
 132         case TILFMT_8BIT:
 133         case TILFMT_16BIT:
 134         case TILFMT_32BIT:
 135         case TILFMT_PAGE:
 136                 return true;
 137         default:
 138                 return false;
 139         }
 140 }
 141
 142 static inline int dmm_is_available(void)
 143 {
 144         return cpu_is_omap44xx();
 145 }
 146
 147 #endif