diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/hubbub/dcn30/dcn30_hubbub.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hubbub/dcn30/dcn30_hubbub.c | 476 |
1 files changed, 476 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/hubbub/dcn30/dcn30_hubbub.c b/drivers/gpu/drm/amd/display/dc/hubbub/dcn30/dcn30_hubbub.c new file mode 100644 index 000000000000..fe741100c0f8 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/hubbub/dcn30/dcn30_hubbub.c @@ -0,0 +1,476 @@ +/* + * 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 "dm_services.h" +#include "reg_helper.h" +#include "dcn30_hubbub.h" + + +#define CTX \ + hubbub1->base.ctx +#define DC_LOGGER \ + hubbub1->base.ctx->logger +#define REG(reg)\ + hubbub1->regs->reg + +#undef FN +#define FN(reg_name, field_name) \ + hubbub1->shifts->field_name, hubbub1->masks->field_name + +#ifdef NUM_VMID +#undef NUM_VMID +#endif +#define NUM_VMID 16 + + +static uint32_t convert_and_clamp( + uint32_t wm_ns, + uint32_t refclk_mhz, + uint32_t clamp_value) +{ + uint32_t ret_val = 0; + ret_val = wm_ns * refclk_mhz; + ret_val /= 1000; + + if (ret_val > clamp_value) + ret_val = clamp_value; + + return ret_val; +} + +int hubbub3_init_dchub_sys_ctx(struct hubbub *hubbub, + struct dcn_hubbub_phys_addr_config *pa_config) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + struct dcn_vmid_page_table_config phys_config; + + REG_SET(DCN_VM_FB_LOCATION_BASE, 0, + FB_BASE, pa_config->system_aperture.fb_base >> 24); + REG_SET(DCN_VM_FB_LOCATION_TOP, 0, + FB_TOP, pa_config->system_aperture.fb_top >> 24); + REG_SET(DCN_VM_FB_OFFSET, 0, + FB_OFFSET, pa_config->system_aperture.fb_offset >> 24); + REG_SET(DCN_VM_AGP_BOT, 0, + AGP_BOT, pa_config->system_aperture.agp_bot >> 24); + REG_SET(DCN_VM_AGP_TOP, 0, + AGP_TOP, pa_config->system_aperture.agp_top >> 24); + REG_SET(DCN_VM_AGP_BASE, 0, + AGP_BASE, pa_config->system_aperture.agp_base >> 24); + + if (pa_config->gart_config.page_table_start_addr != pa_config->gart_config.page_table_end_addr) { + phys_config.page_table_start_addr = pa_config->gart_config.page_table_start_addr >> 12; + phys_config.page_table_end_addr = pa_config->gart_config.page_table_end_addr >> 12; + phys_config.page_table_base_addr = pa_config->gart_config.page_table_base_addr; + phys_config.depth = 0; + phys_config.block_size = 0; + // Init VMID 0 based on PA config + dcn20_vmid_setup(&hubbub1->vmid[0], &phys_config); + } + + return NUM_VMID; +} + +bool hubbub3_program_watermarks( + struct hubbub *hubbub, + union dcn_watermark_set *watermarks, + unsigned int refclk_mhz, + bool safe_to_lower) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + bool wm_pending = false; + + if (hubbub21_program_urgent_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower)) + wm_pending = true; + + if (hubbub21_program_stutter_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower)) + wm_pending = true; + + if (hubbub21_program_pstate_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower)) + wm_pending = true; + + /* + * The DCHub arbiter has a mechanism to dynamically rate limit the DCHub request stream to the fabric. + * If the memory controller is fully utilized and the DCHub requestors are + * well ahead of their amortized schedule, then it is safe to prevent the next winner + * from being committed and sent to the fabric. + * The utilization of the memory controller is approximated by ensuring that + * the number of outstanding requests is greater than a threshold specified + * by the ARB_MIN_REQ_OUTSTANDING. To determine that the DCHub requestors are well ahead of the amortized schedule, + * the slack of the next winner is compared with the ARB_SAT_LEVEL in DLG RefClk cycles. + * + * TODO: Revisit request limit after figure out right number. request limit for Renoir isn't decided yet, set maximum value (0x1FF) + * to turn off it for now. + */ + REG_SET(DCHUBBUB_ARB_SAT_LEVEL, 0, + DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz); + REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND, + DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 0x1FF); + + hubbub1_allow_self_refresh_control(hubbub, !hubbub->ctx->dc->debug.disable_stutter); + + return wm_pending; +} + +bool hubbub3_dcc_support_swizzle( + enum swizzle_mode_values swizzle, + unsigned int bytes_per_element, + enum segment_order *segment_order_horz, + enum segment_order *segment_order_vert) +{ + bool standard_swizzle = false; + bool display_swizzle = false; + bool render_swizzle = false; + + switch (swizzle) { + case DC_SW_4KB_S: + case DC_SW_64KB_S: + case DC_SW_VAR_S: + case DC_SW_4KB_S_X: + case DC_SW_64KB_S_X: + case DC_SW_VAR_S_X: + standard_swizzle = true; + break; + case DC_SW_4KB_R: + case DC_SW_64KB_R: + case DC_SW_VAR_R: + case DC_SW_4KB_R_X: + case DC_SW_64KB_R_X: + case DC_SW_VAR_R_X: + render_swizzle = true; + break; + case DC_SW_4KB_D: + case DC_SW_64KB_D: + case DC_SW_VAR_D: + case DC_SW_4KB_D_X: + case DC_SW_64KB_D_X: + case DC_SW_VAR_D_X: + display_swizzle = true; + break; + default: + break; + } + + if (standard_swizzle) { + if (bytes_per_element == 1) { + *segment_order_horz = segment_order__contiguous; + *segment_order_vert = segment_order__na; + return true; + } + if (bytes_per_element == 2) { + *segment_order_horz = segment_order__non_contiguous; + *segment_order_vert = segment_order__contiguous; + return true; + } + if (bytes_per_element == 4) { + *segment_order_horz = segment_order__non_contiguous; + *segment_order_vert = segment_order__contiguous; + return true; + } + if (bytes_per_element == 8) { + *segment_order_horz = segment_order__na; + *segment_order_vert = segment_order__contiguous; + return true; + } + } + if (render_swizzle) { + if (bytes_per_element == 1) { + *segment_order_horz = segment_order__contiguous; + *segment_order_vert = segment_order__na; + return true; + } + if (bytes_per_element == 2) { + *segment_order_horz = segment_order__non_contiguous; + *segment_order_vert = segment_order__contiguous; + return true; + } + if (bytes_per_element == 4) { + *segment_order_horz = segment_order__contiguous; + *segment_order_vert = segment_order__non_contiguous; + return true; + } + if (bytes_per_element == 8) { + *segment_order_horz = segment_order__contiguous; + *segment_order_vert = segment_order__non_contiguous; + return true; + } + } + if (display_swizzle && bytes_per_element == 8) { + *segment_order_horz = segment_order__contiguous; + *segment_order_vert = segment_order__non_contiguous; + return true; + } + + return false; +} + +static void hubbub3_get_blk256_size(unsigned int *blk256_width, unsigned int *blk256_height, + unsigned int bytes_per_element) +{ + /* copied from DML. might want to refactor DML to leverage from DML */ + /* DML : get_blk256_size */ + if (bytes_per_element == 1) { + *blk256_width = 16; + *blk256_height = 16; + } else if (bytes_per_element == 2) { + *blk256_width = 16; + *blk256_height = 8; + } else if (bytes_per_element == 4) { + *blk256_width = 8; + *blk256_height = 8; + } else if (bytes_per_element == 8) { + *blk256_width = 8; + *blk256_height = 4; + } +} + +static void hubbub3_det_request_size( + unsigned int detile_buf_size, + unsigned int height, + unsigned int width, + unsigned int bpe, + bool *req128_horz_wc, + bool *req128_vert_wc) +{ + unsigned int blk256_height = 0; + unsigned int blk256_width = 0; + unsigned int swath_bytes_horz_wc, swath_bytes_vert_wc; + + hubbub3_get_blk256_size(&blk256_width, &blk256_height, bpe); + + swath_bytes_horz_wc = width * blk256_height * bpe; + swath_bytes_vert_wc = height * blk256_width * bpe; + + *req128_horz_wc = (2 * swath_bytes_horz_wc <= detile_buf_size) ? + false : /* full 256B request */ + true; /* half 128b request */ + + *req128_vert_wc = (2 * swath_bytes_vert_wc <= detile_buf_size) ? + false : /* full 256B request */ + true; /* half 128b request */ +} + +bool hubbub3_get_dcc_compression_cap(struct hubbub *hubbub, + const struct dc_dcc_surface_param *input, + struct dc_surface_dcc_cap *output) +{ + struct dc *dc = hubbub->ctx->dc; + /* implement section 1.6.2.1 of DCN1_Programming_Guide.docx */ + enum dcc_control dcc_control; + unsigned int bpe; + enum segment_order segment_order_horz, segment_order_vert; + bool req128_horz_wc, req128_vert_wc; + + memset(output, 0, sizeof(*output)); + + if (dc->debug.disable_dcc == DCC_DISABLE) + return false; + + if (!hubbub->funcs->dcc_support_pixel_format(input->format, + &bpe)) + return false; + + if (!hubbub->funcs->dcc_support_swizzle(input->swizzle_mode, bpe, + &segment_order_horz, &segment_order_vert)) + return false; + + hubbub3_det_request_size(TO_DCN20_HUBBUB(hubbub)->detile_buf_size, + input->surface_size.height, input->surface_size.width, + bpe, &req128_horz_wc, &req128_vert_wc); + + if (!req128_horz_wc && !req128_vert_wc) { + dcc_control = dcc_control__256_256_xxx; + } else if (input->scan == SCAN_DIRECTION_HORIZONTAL) { + if (!req128_horz_wc) + dcc_control = dcc_control__256_256_xxx; + else if (segment_order_horz == segment_order__contiguous) + dcc_control = dcc_control__128_128_xxx; + else + dcc_control = dcc_control__256_64_64; + } else if (input->scan == SCAN_DIRECTION_VERTICAL) { + if (!req128_vert_wc) + dcc_control = dcc_control__256_256_xxx; + else if (segment_order_vert == segment_order__contiguous) + dcc_control = dcc_control__128_128_xxx; + else + dcc_control = dcc_control__256_64_64; + } else { + if ((req128_horz_wc && + segment_order_horz == segment_order__non_contiguous) || + (req128_vert_wc && + segment_order_vert == segment_order__non_contiguous)) + /* access_dir not known, must use most constraining */ + dcc_control = dcc_control__256_64_64; + else + /* reg128 is true for either horz and vert + * but segment_order is contiguous + */ + dcc_control = dcc_control__128_128_xxx; + } + + /* Exception for 64KB_R_X */ + if ((bpe == 2) && (input->swizzle_mode == DC_SW_64KB_R_X)) + dcc_control = dcc_control__128_128_xxx; + + if (dc->debug.disable_dcc == DCC_HALF_REQ_DISALBE && + dcc_control != dcc_control__256_256_xxx) + return false; + + switch (dcc_control) { + case dcc_control__256_256: + case dcc_control__256_256_xxx: + output->grph.rgb.max_uncompressed_blk_size = 256; + output->grph.rgb.max_compressed_blk_size = 256; + output->grph.rgb.independent_64b_blks = false; + output->grph.rgb.dcc_controls.dcc_256_256_unconstrained = 1; + output->grph.rgb.dcc_controls.dcc_256_128_128 = 1; + break; + case dcc_control__256_128: + case dcc_control__128_128_xxx: + output->grph.rgb.max_uncompressed_blk_size = 128; + output->grph.rgb.max_compressed_blk_size = 128; + output->grph.rgb.independent_64b_blks = false; + output->grph.rgb.dcc_controls.dcc_128_128_uncontrained = 1; + output->grph.rgb.dcc_controls.dcc_256_128_128 = 1; + break; + case dcc_control__256_64: + case dcc_control__256_64_64: + output->grph.rgb.max_uncompressed_blk_size = 256; + output->grph.rgb.max_compressed_blk_size = 64; + output->grph.rgb.independent_64b_blks = true; + output->grph.rgb.dcc_controls.dcc_256_64_64 = 1; + break; + case dcc_control__256_128_128: + output->grph.rgb.max_uncompressed_blk_size = 256; + output->grph.rgb.max_compressed_blk_size = 128; + output->grph.rgb.independent_64b_blks = false; + output->grph.rgb.dcc_controls.dcc_256_128_128 = 1; + break; + } + output->capable = true; + output->const_color_support = true; + + return true; +} + +void hubbub3_force_wm_propagate_to_pipes(struct hubbub *hubbub) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + uint32_t refclk_mhz = hubbub->ctx->dc->res_pool->ref_clocks.dchub_ref_clock_inKhz / 1000; + uint32_t prog_wm_value = convert_and_clamp(hubbub1->watermarks.a.urgent_ns, + refclk_mhz, 0x1fffff); + + REG_SET_2(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, 0, + DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, prog_wm_value, + DCHUBBUB_ARB_VM_ROW_URGENCY_WATERMARK_A, prog_wm_value); +} + +void hubbub3_force_pstate_change_control(struct hubbub *hubbub, + bool force, bool allow) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + + REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL, + DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_VALUE, allow, + DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_ENABLE, force); +} + +/* Copy values from WM set A to all other sets */ +void hubbub3_init_watermarks(struct hubbub *hubbub) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + uint32_t reg; + + reg = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A); + REG_WRITE(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B, reg); + REG_WRITE(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C, reg); + REG_WRITE(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_FRAC_URG_BW_FLIP_A); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_FLIP_B, reg); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_FLIP_C, reg); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_FLIP_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_FRAC_URG_BW_NOM_A); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_NOM_B, reg); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_NOM_C, reg); + REG_WRITE(DCHUBBUB_ARB_FRAC_URG_BW_NOM_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_REFCYC_PER_TRIP_TO_MEMORY_A); + REG_WRITE(DCHUBBUB_ARB_REFCYC_PER_TRIP_TO_MEMORY_B, reg); + REG_WRITE(DCHUBBUB_ARB_REFCYC_PER_TRIP_TO_MEMORY_C, reg); + REG_WRITE(DCHUBBUB_ARB_REFCYC_PER_TRIP_TO_MEMORY_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_A); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_B, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_C, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_D, reg); + + reg = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A); + REG_WRITE(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C, reg); + REG_WRITE(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D, reg); +} + +static const struct hubbub_funcs hubbub30_funcs = { + .update_dchub = hubbub2_update_dchub, + .init_dchub_sys_ctx = hubbub3_init_dchub_sys_ctx, + .init_vm_ctx = hubbub2_init_vm_ctx, + .dcc_support_swizzle = hubbub3_dcc_support_swizzle, + .dcc_support_pixel_format = hubbub2_dcc_support_pixel_format, + .get_dcc_compression_cap = hubbub3_get_dcc_compression_cap, + .wm_read_state = hubbub21_wm_read_state, + .get_dchub_ref_freq = hubbub2_get_dchub_ref_freq, + .program_watermarks = hubbub3_program_watermarks, + .allow_self_refresh_control = hubbub1_allow_self_refresh_control, + .is_allow_self_refresh_enabled = hubbub1_is_allow_self_refresh_enabled, + .verify_allow_pstate_change_high = hubbub1_verify_allow_pstate_change_high, + .force_wm_propagate_to_pipes = hubbub3_force_wm_propagate_to_pipes, + .force_pstate_change_control = hubbub3_force_pstate_change_control, + .init_watermarks = hubbub3_init_watermarks, + .hubbub_read_state = hubbub2_read_state, +}; + +void hubbub3_construct(struct dcn20_hubbub *hubbub3, + struct dc_context *ctx, + const struct dcn_hubbub_registers *hubbub_regs, + const struct dcn_hubbub_shift *hubbub_shift, + const struct dcn_hubbub_mask *hubbub_mask) +{ + hubbub3->base.ctx = ctx; + hubbub3->base.funcs = &hubbub30_funcs; + hubbub3->regs = hubbub_regs; + hubbub3->shifts = hubbub_shift; + hubbub3->masks = hubbub_mask; + + hubbub3->debug_test_index_pstate = 0xB; + hubbub3->detile_buf_size = 184 * 1024; /* 184KB for DCN3 */ +} + |