drivers/gpu/drm/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 "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 /*
  57 Table 15-11. Coding and Description of TILER Orientations
  58 S Y X   Description                             Alternate description
  59 0 0 0   0-degree view                           Natural view
  60 0 0 1   0-degree view with vertical mirror      180-degree view with horizontal mirror
  61 0 1 0   0-degree view with horizontal mirror    180-degree view with vertical mirror
  62 0 1 1   180-degree view
  63 1 0 0   90-degree view with vertical mirror     270-degree view with horizontal mirror
  64 1 0 1   270-degree view
  65 1 1 0   90-degree view
  66 1 1 1   90-degree view with horizontal mirror   270-degree view with vertical mirror
  67  */
  68 #define MASK_XY_FLIP            (1 << 31)
  69 #define MASK_Y_INVERT           (1 << 30)
  70 #define MASK_X_INVERT           (1 << 29)
  71 #define SHIFT_ACC_MODE          27
  72 #define MASK_ACC_MODE           3
  73
  74 #define MASK(bits) ((1 << (bits)) - 1)
  75
  76 #define TILVIEW_8BIT    0x60000000u
  77 #define TILVIEW_16BIT   (TILVIEW_8BIT  + VIEW_SIZE)
  78 #define TILVIEW_32BIT   (TILVIEW_16BIT + VIEW_SIZE)
  79 #define TILVIEW_PAGE    (TILVIEW_32BIT + VIEW_SIZE)
  80 #define TILVIEW_END     (TILVIEW_PAGE  + VIEW_SIZE)
  81
  82 /* create tsptr by adding view orientation and access mode */
  83 #define TIL_ADDR(x, orient, a)\
  84         ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
  85
  86 #ifdef CONFIG_DEBUG_FS
  87 int tiler_map_show(struct seq_file *s, void *arg);
  88 #endif
  89
  90 /* pin/unpin */
  91 int tiler_pin(struct tiler_block *block, struct page **pages,
  92                 uint32_t npages, uint32_t roll, bool wait);
  93 int tiler_unpin(struct tiler_block *block);
  94
  95 /* reserve/release */
  96 struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
  97                                 uint16_t align);
  98 struct tiler_block *tiler_reserve_1d(size_t size);
  99 int tiler_release(struct tiler_block *block);
 100
 101 /* utilities */
 102 dma_addr_t tiler_ssptr(struct tiler_block *block);
 103 dma_addr_t tiler_tsptr(struct tiler_block *block, uint32_t orient,
 104                 uint32_t x, uint32_t y);
 105 uint32_t tiler_stride(enum tiler_fmt fmt, uint32_t orient);
 106 size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 107 size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 108 void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
 109 bool dmm_is_available(void);
 110
 111 extern struct platform_driver omap_dmm_driver;
 112
 113 /* GEM bo flags -> tiler fmt */
 114 static inline enum tiler_fmt gem2fmt(uint32_t flags)
 115 {
 116         switch (flags & OMAP_BO_TILED) {
 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
 128 static 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