diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 798 |
1 files changed, 798 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c new file mode 100644 index 000000000000..c6785969eb1a --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c @@ -0,0 +1,798 @@ +/* + * Copyright 2021 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 "dccg.h" +#include "clk_mgr_internal.h" + +#include "dcn32/dcn32_clk_mgr_smu_msg.h" +#include "dcn20/dcn20_clk_mgr.h" +#include "dce100/dce_clk_mgr.h" +#include "dcn31/dcn31_clk_mgr.h" +#include "reg_helper.h" +#include "core_types.h" +#include "dm_helpers.h" +#include "dc_link_dp.h" + +#include "atomfirmware.h" +#include "smu13_driver_if.h" + +#include "dcn/dcn_3_2_0_offset.h" +#include "dcn/dcn_3_2_0_sh_mask.h" + +#include "dcn32/dcn32_clk_mgr.h" +#include "dml/dcn32/dcn32_fpu.h" + +#define DCN_BASE__INST0_SEG1 0x000000C0 + +#define mmCLK1_CLK_PLL_REQ 0x16E37 +#define mmCLK1_CLK0_DFS_CNTL 0x16E69 +#define mmCLK1_CLK1_DFS_CNTL 0x16E6C +#define mmCLK1_CLK2_DFS_CNTL 0x16E6F +#define mmCLK1_CLK3_DFS_CNTL 0x16E72 +#define mmCLK1_CLK4_DFS_CNTL 0x16E75 + +#define CLK1_CLK_PLL_REQ__FbMult_int_MASK 0x000001ffUL +#define CLK1_CLK_PLL_REQ__PllSpineDiv_MASK 0x0000f000UL +#define CLK1_CLK_PLL_REQ__FbMult_frac_MASK 0xffff0000UL +#define CLK1_CLK_PLL_REQ__FbMult_int__SHIFT 0x00000000 +#define CLK1_CLK_PLL_REQ__PllSpineDiv__SHIFT 0x0000000c +#define CLK1_CLK_PLL_REQ__FbMult_frac__SHIFT 0x00000010 + +#define mmCLK01_CLK0_CLK_PLL_REQ 0x16E37 +#define mmCLK01_CLK0_CLK0_DFS_CNTL 0x16E64 +#define mmCLK01_CLK0_CLK1_DFS_CNTL 0x16E67 +#define mmCLK01_CLK0_CLK2_DFS_CNTL 0x16E6A +#define mmCLK01_CLK0_CLK3_DFS_CNTL 0x16E6D +#define mmCLK01_CLK0_CLK4_DFS_CNTL 0x16E70 + +#define CLK0_CLK_PLL_REQ__FbMult_int_MASK 0x000001ffL +#define CLK0_CLK_PLL_REQ__PllSpineDiv_MASK 0x0000f000L +#define CLK0_CLK_PLL_REQ__FbMult_frac_MASK 0xffff0000L +#define CLK0_CLK_PLL_REQ__FbMult_int__SHIFT 0x00000000 +#define CLK0_CLK_PLL_REQ__PllSpineDiv__SHIFT 0x0000000c +#define CLK0_CLK_PLL_REQ__FbMult_frac__SHIFT 0x00000010 + +#undef FN +#define FN(reg_name, field_name) \ + clk_mgr->clk_mgr_shift->field_name, clk_mgr->clk_mgr_mask->field_name + +#define REG(reg) \ + (clk_mgr->regs->reg) + +#define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg + +#define BASE(seg) BASE_INNER(seg) + +#define SR(reg_name)\ + .reg_name = BASE(reg ## reg_name ## _BASE_IDX) + \ + reg ## reg_name + +#define CLK_SR_DCN32(reg_name)\ + .reg_name = mm ## reg_name + +static const struct clk_mgr_registers clk_mgr_regs_dcn32 = { + CLK_REG_LIST_DCN32() +}; + +static const struct clk_mgr_shift clk_mgr_shift_dcn32 = { + CLK_COMMON_MASK_SH_LIST_DCN32(__SHIFT) +}; + +static const struct clk_mgr_mask clk_mgr_mask_dcn32 = { + CLK_COMMON_MASK_SH_LIST_DCN32(_MASK) +}; + + +#define CLK_SR_DCN321(reg_name, block, inst)\ + .reg_name = mm ## block ## _ ## reg_name + +static const struct clk_mgr_registers clk_mgr_regs_dcn321 = { + CLK_REG_LIST_DCN321() +}; + +static const struct clk_mgr_shift clk_mgr_shift_dcn321 = { + CLK_COMMON_MASK_SH_LIST_DCN321(__SHIFT) +}; + +static const struct clk_mgr_mask clk_mgr_mask_dcn321 = { + CLK_COMMON_MASK_SH_LIST_DCN321(_MASK) +}; + + +/* Query SMU for all clock states for a particular clock */ +static void dcn32_init_single_clock(struct clk_mgr_internal *clk_mgr, PPCLK_e clk, unsigned int *entry_0, + unsigned int *num_levels) +{ + unsigned int i; + char *entry_i = (char *)entry_0; + + uint32_t ret = dcn30_smu_get_dpm_freq_by_index(clk_mgr, clk, 0xFF); + + if (ret & (1 << 31)) + /* fine-grained, only min and max */ + *num_levels = 2; + else + /* discrete, a number of fixed states */ + /* will set num_levels to 0 on failure */ + *num_levels = ret & 0xFF; + + /* if the initial message failed, num_levels will be 0 */ + for (i = 0; i < *num_levels; i++) { + *((unsigned int *)entry_i) = (dcn30_smu_get_dpm_freq_by_index(clk_mgr, clk, i) & 0xFFFF); + entry_i += sizeof(clk_mgr->base.bw_params->clk_table.entries[0]); + } +} + +static void dcn32_build_wm_range_table(struct clk_mgr_internal *clk_mgr) +{ + DC_FP_START(); + dcn32_build_wm_range_table_fpu(clk_mgr); + DC_FP_END(); +} + +void dcn32_init_clocks(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + unsigned int num_levels; + + memset(&(clk_mgr_base->clks), 0, sizeof(struct dc_clocks)); + clk_mgr_base->clks.p_state_change_support = true; + clk_mgr_base->clks.prev_p_state_change_support = true; + clk_mgr_base->clks.fclk_prev_p_state_change_support = true; + clk_mgr->smu_present = false; + + if (!clk_mgr_base->bw_params) + return; + + if (!clk_mgr_base->force_smu_not_present && dcn30_smu_get_smu_version(clk_mgr, &clk_mgr->smu_ver)) + clk_mgr->smu_present = true; + + if (!clk_mgr->smu_present) + return; + + dcn30_smu_check_driver_if_version(clk_mgr); + dcn30_smu_check_msg_header_version(clk_mgr); + + /* DCFCLK */ + dcn32_init_single_clock(clk_mgr, PPCLK_DCFCLK, + &clk_mgr_base->bw_params->clk_table.entries[0].dcfclk_mhz, + &num_levels); + + /* SOCCLK */ + dcn32_init_single_clock(clk_mgr, PPCLK_SOCCLK, + &clk_mgr_base->bw_params->clk_table.entries[0].socclk_mhz, + &num_levels); + /* DTBCLK */ + if (!clk_mgr->base.ctx->dc->debug.disable_dtb_ref_clk_switch) + dcn32_init_single_clock(clk_mgr, PPCLK_DTBCLK, + &clk_mgr_base->bw_params->clk_table.entries[0].dtbclk_mhz, + &num_levels); + + /* DISPCLK */ + dcn32_init_single_clock(clk_mgr, PPCLK_DISPCLK, + &clk_mgr_base->bw_params->clk_table.entries[0].dispclk_mhz, + &num_levels); + + if (clk_mgr_base->ctx->dc->debug.min_disp_clk_khz) { + unsigned int i; + + for (i = 0; i < num_levels; i++) + if (clk_mgr_base->bw_params->clk_table.entries[i].dispclk_mhz + < khz_to_mhz_ceil(clk_mgr_base->ctx->dc->debug.min_disp_clk_khz)) + clk_mgr_base->bw_params->clk_table.entries[i].dispclk_mhz + = khz_to_mhz_ceil(clk_mgr_base->ctx->dc->debug.min_disp_clk_khz); + } + + if (clk_mgr_base->ctx->dc->debug.min_dpp_clk_khz) { + unsigned int i; + + for (i = 0; i < num_levels; i++) + if (clk_mgr_base->bw_params->clk_table.entries[i].dppclk_mhz + < khz_to_mhz_ceil(clk_mgr_base->ctx->dc->debug.min_dpp_clk_khz)) + clk_mgr_base->bw_params->clk_table.entries[i].dppclk_mhz + = khz_to_mhz_ceil(clk_mgr_base->ctx->dc->debug.min_dpp_clk_khz); + } + + /* Get UCLK, update bounding box */ + clk_mgr_base->funcs->get_memclk_states_from_smu(clk_mgr_base); + + DC_FP_START(); + /* WM range table */ + dcn32_build_wm_range_table(clk_mgr); + DC_FP_END(); +} + +static void dcn32_update_clocks_update_dtb_dto(struct clk_mgr_internal *clk_mgr, + struct dc_state *context, + int ref_dtbclk_khz) +{ + struct dccg *dccg = clk_mgr->dccg; + uint32_t tg_mask = 0; + int i; + + for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { + struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; + struct dtbclk_dto_params dto_params = {0}; + + /* use mask to program DTO once per tg */ + if (pipe_ctx->stream_res.tg && + !(tg_mask & (1 << pipe_ctx->stream_res.tg->inst))) { + tg_mask |= (1 << pipe_ctx->stream_res.tg->inst); + + dto_params.otg_inst = pipe_ctx->stream_res.tg->inst; + dto_params.ref_dtbclk_khz = ref_dtbclk_khz; + + if (is_dp_128b_132b_signal(pipe_ctx)) { + dto_params.pixclk_khz = pipe_ctx->stream->phy_pix_clk; + + if (pipe_ctx->stream_res.audio != NULL) + dto_params.req_audio_dtbclk_khz = 24000; + } + if (dc_is_hdmi_signal(pipe_ctx->stream->signal)) + dto_params.is_hdmi = true; + + dccg->funcs->set_dtbclk_dto(clk_mgr->dccg, &dto_params); + //dccg->funcs->set_audio_dtbclk_dto(clk_mgr->dccg, &dto_params); + } + } +} + +/* Since DPPCLK request to PMFW needs to be exact (due to DPP DTO programming), + * update DPPCLK to be the exact frequency that will be set after the DPPCLK + * divider is updated. This will prevent rounding issues that could cause DPP + * refclk and DPP DTO to not match up. + */ +static void dcn32_update_dppclk_dispclk_freq(struct clk_mgr_internal *clk_mgr, struct dc_clocks *new_clocks) +{ + int dpp_divider = 0; + int disp_divider = 0; + + if (new_clocks->dppclk_khz) { + dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz / new_clocks->dppclk_khz; + new_clocks->dppclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz) / dpp_divider; + } + if (new_clocks->dispclk_khz > 0) { + disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz / new_clocks->dispclk_khz; + new_clocks->dispclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz) / disp_divider; + } +} + +static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base, + struct dc_state *context, + bool safe_to_lower) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk; + struct dc *dc = clk_mgr_base->ctx->dc; + int display_count; + bool update_dppclk = false; + bool update_dispclk = false; + bool enter_display_off = false; + bool dpp_clock_lowered = false; + struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu; + bool force_reset = false; + bool update_uclk = false, update_fclk = false; + bool p_state_change_support; + bool fclk_p_state_change_support; + int total_plane_count; + + if (dc->work_arounds.skip_clock_update) + return; + + if (clk_mgr_base->clks.dispclk_khz == 0 || + (dc->debug.force_clock_mode & 0x1)) { + /* This is from resume or boot up, if forced_clock cfg option used, + * we bypass program dispclk and DPPCLK, but need set them for S3. + */ + force_reset = true; + + dcn2_read_clocks_from_hw_dentist(clk_mgr_base); + + /* Force_clock_mode 0x1: force reset the clock even it is the same clock + * as long as it is in Passive level. + */ + } + display_count = clk_mgr_helper_get_active_display_cnt(dc, context); + + if (display_count == 0) + enter_display_off = true; + + if (clk_mgr->smu_present) { + if (enter_display_off == safe_to_lower) + dcn30_smu_set_num_of_displays(clk_mgr, display_count); + + if (dc->debug.force_min_dcfclk_mhz > 0) + new_clocks->dcfclk_khz = (new_clocks->dcfclk_khz > (dc->debug.force_min_dcfclk_mhz * 1000)) ? + new_clocks->dcfclk_khz : (dc->debug.force_min_dcfclk_mhz * 1000); + + if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) { + clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz; + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DCFCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dcfclk_khz)); + } + + if (should_set_clock(safe_to_lower, new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) { + clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz; + dcn30_smu_set_min_deep_sleep_dcef_clk(clk_mgr, khz_to_mhz_ceil(clk_mgr_base->clks.dcfclk_deep_sleep_khz)); + } + + if (should_set_clock(safe_to_lower, new_clocks->socclk_khz, clk_mgr_base->clks.socclk_khz)) + /* We don't actually care about socclk, don't notify SMU of hard min */ + clk_mgr_base->clks.socclk_khz = new_clocks->socclk_khz; + + clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support; + clk_mgr_base->clks.fclk_prev_p_state_change_support = clk_mgr_base->clks.fclk_p_state_change_support; + clk_mgr_base->clks.prev_num_ways = clk_mgr_base->clks.num_ways; + + if (clk_mgr_base->clks.num_ways != new_clocks->num_ways && + clk_mgr_base->clks.num_ways < new_clocks->num_ways) { + clk_mgr_base->clks.num_ways = new_clocks->num_ways; + dcn32_smu_send_cab_for_uclk_message(clk_mgr, clk_mgr_base->clks.num_ways); + } + + total_plane_count = clk_mgr_helper_get_active_plane_cnt(dc, context); + p_state_change_support = new_clocks->p_state_change_support || (total_plane_count == 0); + fclk_p_state_change_support = new_clocks->fclk_p_state_change_support || (total_plane_count == 0); + if (should_update_pstate_support(safe_to_lower, p_state_change_support, clk_mgr_base->clks.p_state_change_support)) { + clk_mgr_base->clks.p_state_change_support = p_state_change_support; + + /* to disable P-State switching, set UCLK min = max */ + if (!clk_mgr_base->clks.p_state_change_support) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, + clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz); + } + + if (should_update_pstate_support(safe_to_lower, fclk_p_state_change_support, clk_mgr_base->clks.fclk_p_state_change_support) && + clk_mgr_base->ctx->dce_version != DCN_VERSION_3_21) { + clk_mgr_base->clks.fclk_p_state_change_support = fclk_p_state_change_support; + + /* To disable FCLK P-state switching, send FCLK_PSTATE_NOTSUPPORTED message to PMFW */ + if (clk_mgr_base->ctx->dce_version != DCN_VERSION_3_21 && !clk_mgr_base->clks.fclk_p_state_change_support) { + /* Handle code for sending a message to PMFW that FCLK P-state change is not supported */ + dcn32_smu_send_fclk_pstate_message(clk_mgr, FCLK_PSTATE_NOTSUPPORTED); + } + } + + /* Always update saved value, even if new value not set due to P-State switching unsupported */ + if (should_set_clock(safe_to_lower, new_clocks->dramclk_khz, clk_mgr_base->clks.dramclk_khz)) { + clk_mgr_base->clks.dramclk_khz = new_clocks->dramclk_khz; + update_uclk = true; + } + + /* Always update saved value, even if new value not set due to P-State switching unsupported. Also check safe_to_lower for FCLK */ + if (safe_to_lower && (clk_mgr_base->clks.fclk_p_state_change_support != clk_mgr_base->clks.fclk_prev_p_state_change_support)) { + update_fclk = true; + } + + /* set UCLK to requested value if P-State switching is supported, or to re-enable P-State switching */ + if (clk_mgr_base->clks.p_state_change_support && + (update_uclk || !clk_mgr_base->clks.prev_p_state_change_support)) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dramclk_khz)); + + if (clk_mgr_base->ctx->dce_version != DCN_VERSION_3_21 && clk_mgr_base->clks.fclk_p_state_change_support && update_fclk) { + /* Handle the code for sending a message to PMFW that FCLK P-state change is supported */ + dcn32_smu_send_fclk_pstate_message(clk_mgr, FCLK_PSTATE_SUPPORTED); + } + + if (clk_mgr_base->clks.num_ways != new_clocks->num_ways && + clk_mgr_base->clks.num_ways > new_clocks->num_ways) { + clk_mgr_base->clks.num_ways = new_clocks->num_ways; + dcn32_smu_send_cab_for_uclk_message(clk_mgr, clk_mgr_base->clks.num_ways); + } + } + + dcn32_update_dppclk_dispclk_freq(clk_mgr, new_clocks); + if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr_base->clks.dppclk_khz)) { + if (clk_mgr_base->clks.dppclk_khz > new_clocks->dppclk_khz) + dpp_clock_lowered = true; + + clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz; + + if (clk_mgr->smu_present && !dpp_clock_lowered) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DPPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz)); + + update_dppclk = true; + } + + if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) { + clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz; + + if (clk_mgr->smu_present) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dispclk_khz)); + + update_dispclk = true; + } + + if (!new_clocks->dtbclk_en) { + new_clocks->ref_dtbclk_khz = 0; + } + + /* clock limits are received with MHz precision, divide by 1000 to prevent setting clocks at every call */ + if (!dc->debug.disable_dtb_ref_clk_switch && + should_set_clock(safe_to_lower, new_clocks->ref_dtbclk_khz / 1000, clk_mgr_base->clks.ref_dtbclk_khz / 1000)) { + /* DCCG requires KHz precision for DTBCLK */ + clk_mgr_base->clks.ref_dtbclk_khz = + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DTBCLK, khz_to_mhz_ceil(new_clocks->ref_dtbclk_khz)); + + dcn32_update_clocks_update_dtb_dto(clk_mgr, context, clk_mgr_base->clks.ref_dtbclk_khz); + } + + if (dc->config.forced_clocks == false || (force_reset && safe_to_lower)) { + if (dpp_clock_lowered) { + /* if clock is being lowered, increase DTO before lowering refclk */ + dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); + dcn20_update_clocks_update_dentist(clk_mgr, context); + if (clk_mgr->smu_present) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DPPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz)); + } else { + /* if clock is being raised, increase refclk before lowering DTO */ + if (update_dppclk || update_dispclk) + dcn20_update_clocks_update_dentist(clk_mgr, context); + /* There is a check inside dcn20_update_clocks_update_dpp_dto which ensures + * that we do not lower dto when it is not safe to lower. We do not need to + * compare the current and new dppclk before calling this function. + */ + dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); + } + } + + if (update_dispclk && dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) + /*update dmcu for wait_loop count*/ + dmcu->funcs->set_psr_wait_loop(dmcu, + clk_mgr_base->clks.dispclk_khz / 1000 / 7); +} + +static uint32_t dcn32_get_vco_frequency_from_reg(struct clk_mgr_internal *clk_mgr) +{ + struct fixed31_32 pll_req; + uint32_t pll_req_reg = 0; + + /* get FbMult value */ + if (ASICREV_IS_GC_11_0_2(clk_mgr->base.ctx->asic_id.hw_internal_rev)) + pll_req_reg = REG_READ(CLK0_CLK_PLL_REQ); + else + pll_req_reg = REG_READ(CLK1_CLK_PLL_REQ); + + /* set up a fixed-point number + * this works because the int part is on the right edge of the register + * and the frac part is on the left edge + */ + pll_req = dc_fixpt_from_int(pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_int); + pll_req.value |= pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_frac; + + /* multiply by REFCLK period */ + pll_req = dc_fixpt_mul_int(pll_req, clk_mgr->dfs_ref_freq_khz); + + return dc_fixpt_floor(pll_req); +} + +static void dcn32_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass, + struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + uint32_t dprefclk_did = 0; + uint32_t dcfclk_did = 0; + uint32_t dtbclk_did = 0; + uint32_t dispclk_did = 0; + uint32_t dppclk_did = 0; + uint32_t target_div = 0; + + if (ASICREV_IS_GC_11_0_2(clk_mgr->base.ctx->asic_id.hw_internal_rev)) { + /* DFS Slice 0 is used for DISPCLK */ + dispclk_did = REG_READ(CLK0_CLK0_DFS_CNTL); + /* DFS Slice 1 is used for DPPCLK */ + dppclk_did = REG_READ(CLK0_CLK1_DFS_CNTL); + /* DFS Slice 2 is used for DPREFCLK */ + dprefclk_did = REG_READ(CLK0_CLK2_DFS_CNTL); + /* DFS Slice 3 is used for DCFCLK */ + dcfclk_did = REG_READ(CLK0_CLK3_DFS_CNTL); + /* DFS Slice 4 is used for DTBCLK */ + dtbclk_did = REG_READ(CLK0_CLK4_DFS_CNTL); + } else { + /* DFS Slice 0 is used for DISPCLK */ + dispclk_did = REG_READ(CLK1_CLK0_DFS_CNTL); + /* DFS Slice 1 is used for DPPCLK */ + dppclk_did = REG_READ(CLK1_CLK1_DFS_CNTL); + /* DFS Slice 2 is used for DPREFCLK */ + dprefclk_did = REG_READ(CLK1_CLK2_DFS_CNTL); + /* DFS Slice 3 is used for DCFCLK */ + dcfclk_did = REG_READ(CLK1_CLK3_DFS_CNTL); + /* DFS Slice 4 is used for DTBCLK */ + dtbclk_did = REG_READ(CLK1_CLK4_DFS_CNTL); + } + + /* Convert DISPCLK DFS Slice DID to divider*/ + target_div = dentist_get_divider_from_did(dispclk_did); + //Get dispclk in khz + regs_and_bypass->dispclk = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz) / target_div; + + /* Convert DISPCLK DFS Slice DID to divider*/ + target_div = dentist_get_divider_from_did(dppclk_did); + //Get dppclk in khz + regs_and_bypass->dppclk = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz) / target_div; + + /* Convert DPREFCLK DFS Slice DID to divider*/ + target_div = dentist_get_divider_from_did(dprefclk_did); + //Get dprefclk in khz + regs_and_bypass->dprefclk = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz) / target_div; + + /* Convert DCFCLK DFS Slice DID to divider*/ + target_div = dentist_get_divider_from_did(dcfclk_did); + //Get dcfclk in khz + regs_and_bypass->dcfclk = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz) / target_div; + + /* Convert DTBCLK DFS Slice DID to divider*/ + target_div = dentist_get_divider_from_did(dtbclk_did); + //Get dtbclk in khz + regs_and_bypass->dtbclk = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz) / target_div; +} + +static void dcn32_clock_read_ss_info(struct clk_mgr_internal *clk_mgr) +{ + struct dc_bios *bp = clk_mgr->base.ctx->dc_bios; + int ss_info_num = bp->funcs->get_ss_entry_number( + bp, AS_SIGNAL_TYPE_GPU_PLL); + + if (ss_info_num) { + struct spread_spectrum_info info = { { 0 } }; + enum bp_result result = bp->funcs->get_spread_spectrum_info( + bp, AS_SIGNAL_TYPE_GPU_PLL, 0, &info); + + /* SSInfo.spreadSpectrumPercentage !=0 would be sign + * that SS is enabled + */ + if (result == BP_RESULT_OK && + info.spread_spectrum_percentage != 0) { + clk_mgr->ss_on_dprefclk = true; + clk_mgr->dprefclk_ss_divider = info.spread_percentage_divider; + + if (info.type.CENTER_MODE == 0) { + /* Currently for DP Reference clock we + * need only SS percentage for + * downspread + */ + clk_mgr->dprefclk_ss_percentage = + info.spread_spectrum_percentage; + } + } + } +} +static void dcn32_notify_wm_ranges(struct clk_mgr *clk_mgr_base) +{ + unsigned int i; + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + WatermarksExternal_t *table = (WatermarksExternal_t *) clk_mgr->wm_range_table; + + if (!clk_mgr->smu_present) + return; + + if (!table) + return; + + memset(table, 0, sizeof(*table)); + + /* collect valid ranges, place in pmfw table */ + for (i = 0; i < WM_SET_COUNT; i++) + if (clk_mgr->base.bw_params->wm_table.nv_entries[i].valid) { + table->Watermarks.WatermarkRow[i].WmSetting = i; + table->Watermarks.WatermarkRow[i].Flags = clk_mgr->base.bw_params->wm_table.nv_entries[i].pmfw_breakdown.wm_type; + } + dcn30_smu_set_dram_addr_high(clk_mgr, clk_mgr->wm_range_table_addr >> 32); + dcn30_smu_set_dram_addr_low(clk_mgr, clk_mgr->wm_range_table_addr & 0xFFFFFFFF); + dcn32_smu_transfer_wm_table_dram_2_smu(clk_mgr); +} + +/* Set min memclk to minimum, either constrained by the current mode or DPM0 */ +static void dcn32_set_hard_min_memclk(struct clk_mgr *clk_mgr_base, bool current_mode) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + + if (!clk_mgr->smu_present) + return; + + if (current_mode) { + if (clk_mgr_base->clks.p_state_change_support) + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, + khz_to_mhz_ceil(clk_mgr_base->clks.dramclk_khz)); + else + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, + clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz); + } else { + dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK, + clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz); + } +} + +/* Set max memclk to highest DPM value */ +static void dcn32_set_hard_max_memclk(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + + if (!clk_mgr->smu_present) + return; + + dcn30_smu_set_hard_max_by_freq(clk_mgr, PPCLK_UCLK, + clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz); +} + +/* Get current memclk states, update bounding box */ +static void dcn32_get_memclk_states_from_smu(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + unsigned int num_levels; + + if (!clk_mgr->smu_present) + return; + + /* Refresh memclk states */ + dcn32_init_single_clock(clk_mgr, PPCLK_UCLK, + &clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz, + &num_levels); + clk_mgr_base->bw_params->clk_table.num_entries = num_levels ? num_levels : 1; + + DC_FP_START(); + /* Refresh bounding box */ + clk_mgr_base->ctx->dc->res_pool->funcs->update_bw_bounding_box( + clk_mgr->base.ctx->dc, clk_mgr_base->bw_params); + DC_FP_END(); +} + +static bool dcn32_are_clock_states_equal(struct dc_clocks *a, + struct dc_clocks *b) +{ + if (a->dispclk_khz != b->dispclk_khz) + return false; + else if (a->dppclk_khz != b->dppclk_khz) + return false; + else if (a->dcfclk_khz != b->dcfclk_khz) + return false; + else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz) + return false; + else if (a->dramclk_khz != b->dramclk_khz) + return false; + else if (a->p_state_change_support != b->p_state_change_support) + return false; + else if (a->fclk_p_state_change_support != b->fclk_p_state_change_support) + return false; + + return true; +} + +static void dcn32_enable_pme_wa(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + + if (!clk_mgr->smu_present) + return; + + dcn32_smu_set_pme_workaround(clk_mgr); +} + +static bool dcn32_is_smu_present(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + return clk_mgr->smu_present; +} + + +static struct clk_mgr_funcs dcn32_funcs = { + .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz, + .get_dtb_ref_clk_frequency = dcn31_get_dtb_ref_freq_khz, + .update_clocks = dcn32_update_clocks, + .dump_clk_registers = dcn32_dump_clk_registers, + .init_clocks = dcn32_init_clocks, + .notify_wm_ranges = dcn32_notify_wm_ranges, + .set_hard_min_memclk = dcn32_set_hard_min_memclk, + .set_hard_max_memclk = dcn32_set_hard_max_memclk, + .get_memclk_states_from_smu = dcn32_get_memclk_states_from_smu, + .are_clock_states_equal = dcn32_are_clock_states_equal, + .enable_pme_wa = dcn32_enable_pme_wa, + .is_smu_present = dcn32_is_smu_present, +}; + +void dcn32_clk_mgr_construct( + struct dc_context *ctx, + struct clk_mgr_internal *clk_mgr, + struct pp_smu_funcs *pp_smu, + struct dccg *dccg) +{ + clk_mgr->base.ctx = ctx; + clk_mgr->base.funcs = &dcn32_funcs; + if (ASICREV_IS_GC_11_0_2(clk_mgr->base.ctx->asic_id.hw_internal_rev)) { + clk_mgr->regs = &clk_mgr_regs_dcn321; + clk_mgr->clk_mgr_shift = &clk_mgr_shift_dcn321; + clk_mgr->clk_mgr_mask = &clk_mgr_mask_dcn321; + } else { + clk_mgr->regs = &clk_mgr_regs_dcn32; + clk_mgr->clk_mgr_shift = &clk_mgr_shift_dcn32; + clk_mgr->clk_mgr_mask = &clk_mgr_mask_dcn32; + } + + clk_mgr->dccg = dccg; + clk_mgr->dfs_bypass_disp_clk = 0; + + clk_mgr->dprefclk_ss_percentage = 0; + clk_mgr->dprefclk_ss_divider = 1000; + clk_mgr->ss_on_dprefclk = false; + clk_mgr->dfs_ref_freq_khz = 100000; + + /* Changed from DCN3.2_clock_frequency doc to match + * dcn32_dump_clk_registers from 4 * dentist_vco_freq_khz / + * dprefclk DID divider + */ + clk_mgr->base.dprefclk_khz = 716666; + if (ctx->dc->debug.disable_dtb_ref_clk_switch) { + //initialize DTB ref clock value if DPM disabled + if (ctx->dce_version == DCN_VERSION_3_21) + clk_mgr->base.clks.ref_dtbclk_khz = 477800; + else + clk_mgr->base.clks.ref_dtbclk_khz = 268750; + } + + /* integer part is now VCO frequency in kHz */ + clk_mgr->base.dentist_vco_freq_khz = dcn32_get_vco_frequency_from_reg(clk_mgr); + + /* in case we don't get a value from the register, use default */ + if (clk_mgr->base.dentist_vco_freq_khz == 0) + clk_mgr->base.dentist_vco_freq_khz = 4300000; /* Updated as per HW docs */ + + if (ctx->dc->debug.disable_dtb_ref_clk_switch && + clk_mgr->base.clks.ref_dtbclk_khz != clk_mgr->base.boot_snapshot.dtbclk) { + clk_mgr->base.clks.ref_dtbclk_khz = clk_mgr->base.boot_snapshot.dtbclk; + } + + if (clk_mgr->base.boot_snapshot.dprefclk != 0) { + clk_mgr->base.dprefclk_khz = clk_mgr->base.boot_snapshot.dprefclk; + } + dcn32_clock_read_ss_info(clk_mgr); + + clk_mgr->dfs_bypass_enabled = false; + + clk_mgr->smu_present = false; + + clk_mgr->base.bw_params = kzalloc(sizeof(*clk_mgr->base.bw_params), GFP_KERNEL); + + /* need physical address of table to give to PMFW */ + clk_mgr->wm_range_table = dm_helpers_allocate_gpu_mem(clk_mgr->base.ctx, + DC_MEM_ALLOC_TYPE_GART, sizeof(WatermarksExternal_t), + &clk_mgr->wm_range_table_addr); +} + +void dcn32_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr) +{ + if (clk_mgr->base.bw_params) + kfree(clk_mgr->base.bw_params); + + if (clk_mgr->wm_range_table) + dm_helpers_free_gpu_mem(clk_mgr->base.ctx, DC_MEM_ALLOC_TYPE_GART, + clk_mgr->wm_range_table); +} + |