LXR linux/drivers/gpu/drm/omapdrm/omap_dmm

   1/*
   2 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
   3 * Author: Rob Clark <rob@ti.com>
   4 *         Andy Gross <andy.gross@ti.com>
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License as
   8 * published by the Free Software Foundation version 2.
   9 *
  10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11 * kind, whether express or implied; without even the implied warranty
  12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 */
  15#ifndef OMAP_DMM_TILER_H
  16#define OMAP_DMM_TILER_H
  17
  18#include "omap_drv.h"
  19#include "tcm.h"
  20
  21enum tiler_fmt {
  22        TILFMT_8BIT = 0,
  23        TILFMT_16BIT,
  24        TILFMT_32BIT,
  25        TILFMT_PAGE,
  26        TILFMT_NFORMATS
  27};
  28
  29struct pat_area {
  30        u32 x0:8;
  31        u32 y0:8;
  32        u32 x1:8;
  33        u32 y1:8;
  34};
  35
  36struct tiler_block {
  37        struct list_head alloc_node;    /* node for global block list */
  38        struct tcm_area area;           /* area */
  39        enum tiler_fmt fmt;             /* format */
  40};
  41
  42/* bits representing the same slot in DMM-TILER hw-block */
  43#define SLOT_WIDTH_BITS         6
  44#define SLOT_HEIGHT_BITS        6
  45
  46/* bits reserved to describe coordinates in DMM-TILER hw-block */
  47#define CONT_WIDTH_BITS         14
  48#define CONT_HEIGHT_BITS        13
  49
  50/* calculated constants */
  51#define TILER_PAGE              (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
  52#define TILER_WIDTH             (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
  53#define TILER_HEIGHT            (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
  54
  55/*
  56Table 15-11. Coding and Description of TILER Orientations
  57S Y X   Description                             Alternate description
  580 0 0   0-degree view                           Natural view
  590 0 1   0-degree view with vertical mirror      180-degree view with horizontal mirror
  600 1 0   0-degree view with horizontal mirror    180-degree view with vertical mirror
  610 1 1   180-degree view
  621 0 0   90-degree view with vertical mirror     270-degree view with horizontal mirror
  631 0 1   270-degree view
  641 1 0   90-degree view
  651 1 1   90-degree view with horizontal mirror   270-degree view with vertical mirror
  66 */
  67#define MASK_XY_FLIP            (1 << 31)
  68#define MASK_Y_INVERT           (1 << 30)
  69#define MASK_X_INVERT           (1 << 29)
  70#define SHIFT_ACC_MODE          27
  71#define MASK_ACC_MODE           3
  72
  73#define MASK(bits) ((1 << (bits)) - 1)
  74
  75#define TILVIEW_8BIT    0x60000000u
  76#define TILVIEW_16BIT   (TILVIEW_8BIT  + VIEW_SIZE)
  77#define TILVIEW_32BIT   (TILVIEW_16BIT + VIEW_SIZE)
  78#define TILVIEW_PAGE    (TILVIEW_32BIT + VIEW_SIZE)
  79#define TILVIEW_END     (TILVIEW_PAGE  + VIEW_SIZE)
  80
  81/* create tsptr by adding view orientation and access mode */
  82#define TIL_ADDR(x, orient, a)\
  83        ((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
  84
  85#ifdef CONFIG_DEBUG_FS
  86int tiler_map_show(struct seq_file *s, void *arg);
  87#endif
  88
  89/* pin/unpin */
  90int tiler_pin(struct tiler_block *block, struct page **pages,
  91                u32 npages, u32 roll, bool wait);
  92int tiler_unpin(struct tiler_block *block);
  93
  94/* reserve/release */
  95struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, u16 w, u16 h,
  96                                u16 align);
  97struct tiler_block *tiler_reserve_1d(size_t size);
  98int tiler_release(struct tiler_block *block);
  99
 100/* utilities */
 101dma_addr_t tiler_ssptr(struct tiler_block *block);
 102dma_addr_t tiler_tsptr(struct tiler_block *block, u32 orient,
 103                u32 x, u32 y);
 104u32 tiler_stride(enum tiler_fmt fmt, u32 orient);
 105size_t tiler_size(enum tiler_fmt fmt, u16 w, u16 h);
 106size_t tiler_vsize(enum tiler_fmt fmt, u16 w, u16 h);
 107void tiler_align(enum tiler_fmt fmt, u16 *w, u16 *h);
 108u32 tiler_get_cpu_cache_flags(void);
 109bool dmm_is_available(void);
 110
 111extern struct platform_driver omap_dmm_driver;
 112
 113/* GEM bo flags -> tiler fmt */
 114static inline enum tiler_fmt gem2fmt(u32 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
 128static 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
 142