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

   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
  22enum tiler_fmt {
  23        TILFMT_8BIT = 0,
  24        TILFMT_16BIT,
  25        TILFMT_32BIT,
  26        TILFMT_PAGE,
  27        TILFMT_NFORMATS
  28};
  29
  30struct pat_area {
  31        u32 x0:8;
  32        u32 y0:8;
  33        u32 x1:8;
  34        u32 y1:8;
  35};
  36
  37struct 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/*
  57Table 15-11. Coding and Description of TILER Orientations
  58S Y X   Description                             Alternate description
  590 0 0   0-degree view                           Natural view
  600 0 1   0-degree view with vertical mirror      180-degree view with horizontal mirror
  610 1 0   0-degree view with horizontal mirror    180-degree view with vertical mirror
  620 1 1   180-degree view
  631 0 0   90-degree view with vertical mirror     270-degree view with horizontal mirror
  641 0 1   270-degree view
  651 1 0   90-degree view
  661 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
  87int tiler_map_show(struct seq_file *s, void *arg);
  88#endif
  89
  90/* pin/unpin */
  91int tiler_pin(struct tiler_block *block, struct page **pages,
  92                uint32_t npages, uint32_t roll, bool wait);
  93int tiler_unpin(struct tiler_block *block);
  94
  95/* reserve/release */
  96struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
  97                                uint16_t align);
  98struct tiler_block *tiler_reserve_1d(size_t size);
  99int tiler_release(struct tiler_block *block);
 100
 101/* utilities */
 102dma_addr_t tiler_ssptr(struct tiler_block *block);
 103dma_addr_t tiler_tsptr(struct tiler_block *block, uint32_t orient,
 104                uint32_t x, uint32_t y);
 105uint32_t tiler_stride(enum tiler_fmt fmt, uint32_t orient);
 106size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 107size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
 108void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
 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(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
 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