1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright 2021 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: AMD 24 * 25 */ 26 27 #include "dcn10/dcn10_resource.h" 28 29 #include "dcn10_fpu.h" 30 31 /** 32 * DOC: DCN10 FPU manipulation Overview 33 * 34 * The DCN architecture relies on FPU operations, which require special 35 * compilation flags and the use of kernel_fpu_begin/end functions; ideally, we 36 * want to avoid spreading FPU access across multiple files. With this idea in 37 * mind, this file aims to centralize DCN10 functions that require FPU access 38 * in a single place. Code in this file follows the following code pattern: 39 * 40 * 1. Functions that use FPU operations should be isolated in static functions. 41 * 2. The FPU functions should have the noinline attribute to ensure anything 42 * that deals with FP register is contained within this call. 43 * 3. All function that needs to be accessed outside this file requires a 44 * public interface that not uses any FPU reference. 45 * 4. Developers **must not** use DC_FP_START/END in this file, but they need 46 * to ensure that the caller invokes it before access any function available 47 * in this file. For this reason, public functions in this file must invoke 48 * dc_assert_fp_enabled(); 49 * 50 * Let's expand a little bit more the idea in the code pattern. To fully 51 * isolate FPU operations in a single place, we must avoid situations where 52 * compilers spill FP values to registers due to FP enable in a specific C 53 * file. Note that even if we isolate all FPU functions in a single file and 54 * call its interface from other files, the compiler might enable the use of 55 * FPU before we call DC_FP_START. Nevertheless, it is the programmer's 56 * responsibility to invoke DC_FP_START/END in the correct place. To highlight 57 * situations where developers forgot to use the FP protection before calling 58 * the DC FPU interface functions, we introduce a helper that checks if the 59 * function is invoked under FP protection. If not, it will trigger a kernel 60 * warning. 61 */ 62 63 struct _vcs_dpi_ip_params_st dcn1_0_ip = { 64 .rob_buffer_size_kbytes = 64, 65 .det_buffer_size_kbytes = 164, 66 .dpte_buffer_size_in_pte_reqs_luma = 42, 67 .dpp_output_buffer_pixels = 2560, 68 .opp_output_buffer_lines = 1, 69 .pixel_chunk_size_kbytes = 8, 70 .pte_enable = 1, 71 .pte_chunk_size_kbytes = 2, 72 .meta_chunk_size_kbytes = 2, 73 .writeback_chunk_size_kbytes = 2, 74 .line_buffer_size_bits = 589824, 75 .max_line_buffer_lines = 12, 76 .IsLineBufferBppFixed = 0, 77 .LineBufferFixedBpp = -1, 78 .writeback_luma_buffer_size_kbytes = 12, 79 .writeback_chroma_buffer_size_kbytes = 8, 80 .max_num_dpp = 4, 81 .max_num_wb = 2, 82 .max_dchub_pscl_bw_pix_per_clk = 4, 83 .max_pscl_lb_bw_pix_per_clk = 2, 84 .max_lb_vscl_bw_pix_per_clk = 4, 85 .max_vscl_hscl_bw_pix_per_clk = 4, 86 .max_hscl_ratio = 4, 87 .max_vscl_ratio = 4, 88 .hscl_mults = 4, 89 .vscl_mults = 4, 90 .max_hscl_taps = 8, 91 .max_vscl_taps = 8, 92 .dispclk_ramp_margin_percent = 1, 93 .underscan_factor = 1.10, 94 .min_vblank_lines = 14, 95 .dppclk_delay_subtotal = 90, 96 .dispclk_delay_subtotal = 42, 97 .dcfclk_cstate_latency = 10, 98 .max_inter_dcn_tile_repeaters = 8, 99 .can_vstartup_lines_exceed_vsync_plus_back_porch_lines_minus_one = 0, 100 .bug_forcing_LC_req_same_size_fixed = 0, 101 }; 102 103 struct _vcs_dpi_soc_bounding_box_st dcn1_0_soc = { 104 .sr_exit_time_us = 9.0, 105 .sr_enter_plus_exit_time_us = 11.0, 106 .urgent_latency_us = 4.0, 107 .writeback_latency_us = 12.0, 108 .ideal_dram_bw_after_urgent_percent = 80.0, 109 .max_request_size_bytes = 256, 110 .downspread_percent = 0.5, 111 .dram_page_open_time_ns = 50.0, 112 .dram_rw_turnaround_time_ns = 17.5, 113 .dram_return_buffer_per_channel_bytes = 8192, 114 .round_trip_ping_latency_dcfclk_cycles = 128, 115 .urgent_out_of_order_return_per_channel_bytes = 256, 116 .channel_interleave_bytes = 256, 117 .num_banks = 8, 118 .num_chans = 2, 119 .vmm_page_size_bytes = 4096, 120 .dram_clock_change_latency_us = 17.0, 121 .writeback_dram_clock_change_latency_us = 23.0, 122 .return_bus_width_bytes = 64, 123 }; 124