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 /* 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 */
 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
 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
 129 static inline int dmm_is_available(void)
 130 {
 131         return cpu_is_omap44xx();
 132 }
 133
 134 #endif