omap_dmm_tiler.h
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/*
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
* Author: Rob Clark <rob@ti.com>
* Andy Gross <andy.gross@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef OMAP_DMM_TILER_H
#define OMAP_DMM_TILER_H
#include "omap_drv.h"
#include "tcm.h"
enum tiler_fmt {
TILFMT_8BIT = 0,
TILFMT_16BIT,
TILFMT_32BIT,
TILFMT_PAGE,
TILFMT_NFORMATS
};
struct pat_area {
u32 x0:8;
u32 y0:8;
u32 x1:8;
u32 y1:8;
};
struct tiler_block {
struct list_head alloc_node; /* node for global block list */
struct tcm_area area; /* area */
enum tiler_fmt fmt; /* format */
};
/* bits representing the same slot in DMM-TILER hw-block */
#define SLOT_WIDTH_BITS 6
#define SLOT_HEIGHT_BITS 6
/* bits reserved to describe coordinates in DMM-TILER hw-block */
#define CONT_WIDTH_BITS 14
#define CONT_HEIGHT_BITS 13
/* calculated constants */
#define TILER_PAGE (1 << (SLOT_WIDTH_BITS + SLOT_HEIGHT_BITS))
#define TILER_WIDTH (1 << (CONT_WIDTH_BITS - SLOT_WIDTH_BITS))
#define TILER_HEIGHT (1 << (CONT_HEIGHT_BITS - SLOT_HEIGHT_BITS))
/* tiler space addressing bitfields */
#define MASK_XY_FLIP (1 << 31)
#define MASK_Y_INVERT (1 << 30)
#define MASK_X_INVERT (1 << 29)
#define SHIFT_ACC_MODE 27
#define MASK_ACC_MODE 3
#define MASK(bits) ((1 << (bits)) - 1)
#define TILVIEW_8BIT 0x60000000u
#define TILVIEW_16BIT (TILVIEW_8BIT + VIEW_SIZE)
#define TILVIEW_32BIT (TILVIEW_16BIT + VIEW_SIZE)
#define TILVIEW_PAGE (TILVIEW_32BIT + VIEW_SIZE)
#define TILVIEW_END (TILVIEW_PAGE + VIEW_SIZE)
/* create tsptr by adding view orientation and access mode */
#define TIL_ADDR(x, orient, a)\
((u32) (x) | (orient) | ((a) << SHIFT_ACC_MODE))
/* externally accessible functions */
int omap_dmm_init(struct drm_device *dev);
int omap_dmm_remove(void);
#ifdef CONFIG_DEBUG_FS
int tiler_map_show(struct seq_file *s, void *arg);
#endif
/* pin/unpin */
int tiler_pin(struct tiler_block *block, struct page **pages,
uint32_t npages, uint32_t roll, bool wait);
int tiler_unpin(struct tiler_block *block);
/* reserve/release */
struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h,
uint16_t align);
struct tiler_block *tiler_reserve_1d(size_t size);
int tiler_release(struct tiler_block *block);
/* utilities */
dma_addr_t tiler_ssptr(struct tiler_block *block);
uint32_t tiler_stride(enum tiler_fmt fmt);
size_t tiler_size(enum tiler_fmt fmt, uint16_t w, uint16_t h);
size_t tiler_vsize(enum tiler_fmt fmt, uint16_t w, uint16_t h);
void tiler_align(enum tiler_fmt fmt, uint16_t *w, uint16_t *h);
/* GEM bo flags -> tiler fmt */
static inline enum tiler_fmt gem2fmt(uint32_t flags)
{
switch (flags & OMAP_BO_TILED) {
case OMAP_BO_TILED_8:
return TILFMT_8BIT;
case OMAP_BO_TILED_16:
return TILFMT_16BIT;
case OMAP_BO_TILED_32:
return TILFMT_32BIT;
default:
return TILFMT_PAGE;
}
}
static inline bool validfmt(enum tiler_fmt fmt)
{
switch (fmt) {
case TILFMT_8BIT:
case TILFMT_16BIT:
case TILFMT_32BIT:
case TILFMT_PAGE:
return true;
default:
return false;
}
}
struct omap_dmm_platform_data {
void __iomem *base;
int irq;
};
#endif