/*
 * Copyright 2012-20 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 "dm_services.h"
#include "dce_calcs.h"
#include "reg_helper.h"
#include "basics/conversion.h"
#include "dcn32_hubp.h"

#define REG(reg)\
        hubp2->hubp_regs->reg

#define CTX \
        hubp2->base.ctx

#undef FN
#define FN(reg_name, field_name) \
        hubp2->hubp_shift->field_name, hubp2->hubp_mask->field_name

void hubp32_update_force_pstate_disallow(struct hubp *hubp, bool pstate_disallow)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
        REG_UPDATE_2(UCLK_PSTATE_FORCE,
                        DATA_UCLK_PSTATE_FORCE_EN, pstate_disallow,
                        DATA_UCLK_PSTATE_FORCE_VALUE, 0);
}

void hubp32_update_force_cursor_pstate_disallow(struct hubp *hubp, bool pstate_disallow)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);

        REG_UPDATE_2(UCLK_PSTATE_FORCE,
                        CURSOR_UCLK_PSTATE_FORCE_EN, pstate_disallow,
                        CURSOR_UCLK_PSTATE_FORCE_VALUE, 0);
}

void hubp32_update_mall_sel(struct hubp *hubp, uint32_t mall_sel, bool c_cursor)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);

        // Also cache cursor in MALL if using MALL for SS
        REG_UPDATE_2(DCHUBP_MALL_CONFIG, USE_MALL_SEL, mall_sel,
                        USE_MALL_FOR_CURSOR, c_cursor);
}

void hubp32_prepare_subvp_buffering(struct hubp *hubp, bool enable)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
        REG_UPDATE(DCHUBP_VMPG_CONFIG, FORCE_ONE_ROW_FOR_FRAME, enable);

        /* Programming guide suggests CURSOR_REQ_MODE = 1 for SubVP:
         * For Pstate change using the MALL with sub-viewport buffering,
         * the cursor does not use the MALL (USE_MALL_FOR_CURSOR is ignored)
         * and sub-viewport positioning by Display FW has to avoid the cursor
         * requests to DRAM (set CURSOR_REQ_MODE = 1 to minimize this exclusion).
         *
         * CURSOR_REQ_MODE = 1 begins fetching cursor data at the beginning of display prefetch.
         * Setting this should allow the sub-viewport position to always avoid the cursor because
         * we do not allow the sub-viewport region to overlap with display prefetch (i.e. during blank).
         */
        REG_UPDATE(CURSOR_CONTROL, CURSOR_REQ_MODE, enable);
}

void hubp32_phantom_hubp_post_enable(struct hubp *hubp)
{
        uint32_t reg_val;
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);

        /* For phantom pipe enable, disable GSL */
        REG_UPDATE(DCSURF_FLIP_CONTROL2, SURFACE_GSL_ENABLE, 0);
        REG_UPDATE(DCHUBP_CNTL, HUBP_BLANK_EN, 1);
        reg_val = REG_READ(DCHUBP_CNTL);
        if (reg_val) {
                /* init sequence workaround: in case HUBP is
                 * power gated, this wait would timeout.
                 *
                 * we just wrote reg_val to non-0, if it stay 0
                 * it means HUBP is gated
                 */
                REG_WAIT(DCHUBP_CNTL,
                                HUBP_NO_OUTSTANDING_REQ, 1,
                                1, 200);
        }
}

void hubp32_cursor_set_attributes(
                struct hubp *hubp,
                const struct dc_cursor_attributes *attr)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
        enum cursor_pitch hw_pitch = hubp1_get_cursor_pitch(attr->pitch);
        enum cursor_lines_per_chunk lpc = hubp2_get_lines_per_chunk(
                        attr->width, attr->color_format);

        //Round cursor width up to next multiple of 64
        uint32_t cursor_width = ((attr->width + 63) / 64) * 64;
        uint32_t cursor_height = attr->height;
        uint32_t cursor_size = cursor_width * cursor_height;
        bool use_mall_for_cursor;

        switch (attr->color_format) {
        case CURSOR_MODE_MONO:
                cursor_size /= 2;
                break;
        case CURSOR_MODE_COLOR_1BIT_AND:
        case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA:
        case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA:
                cursor_size *= 4;
                break;

        case CURSOR_MODE_COLOR_64BIT_FP_PRE_MULTIPLIED:
        case CURSOR_MODE_COLOR_64BIT_FP_UN_PRE_MULTIPLIED:
        default:
                cursor_size *= 8;
                break;
        }
        use_mall_for_cursor = cursor_size > 16384 ? 1 : 0;

        hubp->curs_attr = *attr;

        if (!hubp->cursor_offload) {
                REG_UPDATE(CURSOR_SURFACE_ADDRESS_HIGH,
                                CURSOR_SURFACE_ADDRESS_HIGH, attr->address.high_part);
                REG_UPDATE(CURSOR_SURFACE_ADDRESS,
                                CURSOR_SURFACE_ADDRESS, attr->address.low_part);

                REG_UPDATE_2(CURSOR_SIZE,
                                CURSOR_WIDTH, attr->width,
                                CURSOR_HEIGHT, attr->height);

                REG_UPDATE_4(CURSOR_CONTROL,
                                CURSOR_MODE, attr->color_format,
                                CURSOR_2X_MAGNIFY, attr->attribute_flags.bits.ENABLE_MAGNIFICATION,
                                CURSOR_PITCH, hw_pitch,
                                CURSOR_LINES_PER_CHUNK, lpc);

                REG_SET_2(CURSOR_SETTINGS, 0,
                                /* no shift of the cursor HDL schedule */
                                CURSOR0_DST_Y_OFFSET, 0,
                                 /* used to shift the cursor chunk request deadline */
                                CURSOR0_CHUNK_HDL_ADJUST, 3);

                REG_UPDATE(DCHUBP_MALL_CONFIG, USE_MALL_FOR_CURSOR, use_mall_for_cursor);
        }
        hubp->att.SURFACE_ADDR_HIGH  = attr->address.high_part;
        hubp->att.SURFACE_ADDR       = attr->address.low_part;
        hubp->att.size.bits.width    = attr->width;
        hubp->att.size.bits.height   = attr->height;
        hubp->att.cur_ctl.bits.mode  = attr->color_format;

        hubp->cur_rect.w = attr->width;
        hubp->cur_rect.h = attr->height;

        hubp->att.cur_ctl.bits.pitch = hw_pitch;
        hubp->att.cur_ctl.bits.line_per_chunk = lpc;
        hubp->att.cur_ctl.bits.cur_2x_magnify = attr->attribute_flags.bits.ENABLE_MAGNIFICATION;
        hubp->att.settings.bits.dst_y_offset  = 0;
        hubp->att.settings.bits.chunk_hdl_adjust = 3;
        hubp->use_mall_for_cursor = use_mall_for_cursor;
}
void hubp32_init(struct hubp *hubp)
{
        struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp);
        REG_WRITE(HUBPREQ_DEBUG_DB, 1 << 8);

        REG_UPDATE(DCHUBP_CNTL, HUBP_TTU_DISABLE, 0);
}
static struct hubp_funcs dcn32_hubp_funcs = {
        .hubp_enable_tripleBuffer = hubp2_enable_triplebuffer,
        .hubp_is_triplebuffer_enabled = hubp2_is_triplebuffer_enabled,
        .hubp_program_surface_flip_and_addr = hubp3_program_surface_flip_and_addr,
        .hubp_program_surface_config = hubp3_program_surface_config,
        .hubp_is_flip_pending = hubp2_is_flip_pending,
        .hubp_setup = hubp3_setup,
        .hubp_setup_interdependent = hubp2_setup_interdependent,
        .hubp_set_vm_system_aperture_settings = hubp3_set_vm_system_aperture_settings,
        .set_blank = hubp2_set_blank,
        .set_blank_regs = hubp2_set_blank_regs,
        .dcc_control = hubp3_dcc_control,
        .hubp_reset = hubp_reset,
        .mem_program_viewport = min_set_viewport,
        .set_cursor_attributes  = hubp32_cursor_set_attributes,
        .set_cursor_position    = hubp2_cursor_set_position,
        .hubp_clk_cntl = hubp2_clk_cntl,
        .hubp_vtg_sel = hubp2_vtg_sel,
        .dmdata_set_attributes = hubp3_dmdata_set_attributes,
        .dmdata_load = hubp2_dmdata_load,
        .dmdata_status_done = hubp2_dmdata_status_done,
        .hubp_read_state = hubp3_read_state,
        .hubp_clear_underflow = hubp2_clear_underflow,
        .hubp_set_flip_control_surface_gsl = hubp2_set_flip_control_surface_gsl,
        .hubp_init = hubp3_init,
        .set_unbounded_requesting = hubp31_set_unbounded_requesting,
        .hubp_soft_reset = hubp31_soft_reset,
        .hubp_set_flip_int = hubp1_set_flip_int,
        .hubp_in_blank = hubp1_in_blank,
        .hubp_update_force_pstate_disallow = hubp32_update_force_pstate_disallow,
        .hubp_update_force_cursor_pstate_disallow = hubp32_update_force_cursor_pstate_disallow,
        .phantom_hubp_post_enable = hubp32_phantom_hubp_post_enable,
        .hubp_update_mall_sel = hubp32_update_mall_sel,
        .hubp_prepare_subvp_buffering = hubp32_prepare_subvp_buffering,
        .hubp_clear_tiling = hubp3_clear_tiling,
        .hubp_read_reg_state = hubp3_read_reg_state
};

bool hubp32_construct(
        struct dcn20_hubp *hubp2,
        struct dc_context *ctx,
        uint32_t inst,
        const struct dcn_hubp2_registers *hubp_regs,
        const struct dcn_hubp2_shift *hubp_shift,
        const struct dcn_hubp2_mask *hubp_mask)
{
        hubp2->base.funcs = &dcn32_hubp_funcs;
        hubp2->base.ctx = ctx;
        hubp2->hubp_regs = hubp_regs;
        hubp2->hubp_shift = hubp_shift;
        hubp2->hubp_mask = hubp_mask;
        hubp2->base.inst = inst;
        hubp2->base.opp_id = OPP_ID_INVALID;
        hubp2->base.mpcc_id = 0xf;

        return true;
}