linux/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mmhubbub.c

/*
 * Copyright 2020 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */


#include "reg_helper.h"
#include "resource.h"
#include "mcif_wb.h"
#include "dcn30_mmhubbub.h"


#define REG(reg) …

#define CTX …

#undef FN
#define FN(reg_name, field_name) …

#define MCIF_ADDR(addr) …
#define MCIF_ADDR_HIGH(addr) …

/* wbif programming guide:
 * 1. set up wbif parameter:
 *    unsigned long long   luma_address[4];       //4 frame buffer
 *    unsigned long long   chroma_address[4];
 *    unsigned int	   luma_pitch;
 *    unsigned int	   chroma_pitch;
 *    unsigned int         warmup_pitch=0x10;     //256B align, the page size is 4KB when it is 0x10
 *    unsigned int	   slice_lines;           //slice size
 *    unsigned int         time_per_pixel;        // time per pixel, in ns
 *    unsigned int         arbitration_slice;     // 0: 2048 bytes 1: 4096 bytes 2: 8192 Bytes
 *    unsigned int         max_scaled_time;       // used for QOS generation
 *    unsigned int         swlock=0x0;
 *    unsigned int         cli_watermark[4];      //4 group urgent watermark
 *    unsigned int         pstate_watermark[4];   //4 group pstate watermark
 *    unsigned int         sw_int_en;             // Software interrupt enable, frame end and overflow
 *    unsigned int         sw_slice_int_en;       // slice end interrupt enable
 *    unsigned int         sw_overrun_int_en;     // overrun error interrupt enable
 *    unsigned int         vce_int_en;            // VCE interrupt enable, frame end and overflow
 *    unsigned int         vce_slice_int_en;      // VCE slice end interrupt enable, frame end and overflow
 *
 * 2. configure wbif register
 *    a. call mmhubbub_config_wbif()
 *
 * 3. Enable wbif
 *    call set_wbif_bufmgr_enable();
 *
 * 4. wbif_dump_status(), option, for debug purpose
 *    the bufmgr status can show the progress of write back, can be used for debug purpose
 */

static void mmhubbub3_warmup_mcif(struct mcif_wb *mcif_wb,
		struct mcif_warmup_params *params)
{ … }

static void mmhubbub3_config_mcif_buf(struct mcif_wb *mcif_wb,
		struct mcif_buf_params *params,
		unsigned int dest_height)
{ … }

static void mmhubbub3_config_mcif_arb(struct mcif_wb *mcif_wb,
		struct mcif_arb_params *params)
{ … }

static const struct mcif_wb_funcs dcn30_mmhubbub_funcs = …;

void dcn30_mmhubbub_construct(struct dcn30_mmhubbub *mcif_wb30,
		struct dc_context *ctx,
		const struct dcn30_mmhubbub_registers *mcif_wb_regs,
		const struct dcn30_mmhubbub_shift *mcif_wb_shift,
		const struct dcn30_mmhubbub_mask *mcif_wb_mask,
		int inst)
{ … }