diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 179 |
1 files changed, 168 insertions, 11 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index 6083b1dcf050..2293a92df3be 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -23,6 +23,7 @@ * */ +#include "dm_services.h" #include "dc.h" #include "dc_dmub_srv.h" #include "../dmub/dmub_srv.h" @@ -34,6 +35,7 @@ #include "resource.h" #include "clk_mgr.h" #include "dc_state_priv.h" +#include "dc_plane_priv.h" #define CTX dc_dmub_srv->ctx #define DC_LOGGER CTX->logger @@ -198,6 +200,11 @@ bool dc_dmub_srv_wait_for_idle(struct dc_dmub_srv *dc_dmub_srv, if (status != DMUB_STATUS_OK) { DC_LOG_DEBUG("No reply for DMUB command: status=%d\n", status); + if (!dmub->debug.timeout_occured) { + dmub->debug.timeout_occured = true; + dmub->debug.timeout_cmd = *cmd_list; + dmub->debug.timestamp = dm_get_timestamp(dc_dmub_srv->ctx); + } dc_dmub_srv_log_diagnostic_data(dc_dmub_srv); return false; } @@ -904,12 +911,15 @@ bool dc_dmub_srv_get_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv, struct dmu void dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv) { struct dmub_diagnostic_data diag_data = {0}; + uint32_t i; if (!dc_dmub_srv || !dc_dmub_srv->dmub) { DC_LOG_ERROR("%s: invalid parameters.", __func__); return; } + DC_LOG_ERROR("%s: DMCUB error - collecting diagnostic data\n", __func__); + if (!dc_dmub_srv_get_diagnostic_data(dc_dmub_srv, &diag_data)) { DC_LOG_ERROR("%s: dc_dmub_srv_get_diagnostic_data failed.", __func__); return; @@ -933,7 +943,8 @@ void dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv) DC_LOG_DEBUG(" scratch [13] : %08x", diag_data.scratch[13]); DC_LOG_DEBUG(" scratch [14] : %08x", diag_data.scratch[14]); DC_LOG_DEBUG(" scratch [15] : %08x", diag_data.scratch[15]); - DC_LOG_DEBUG(" pc : %08x", diag_data.pc); + for (i = 0; i < DMUB_PC_SNAPSHOT_COUNT; i++) + DC_LOG_DEBUG(" pc[%d] : %08x", i, diag_data.pc[i]); DC_LOG_DEBUG(" unk_fault_addr : %08x", diag_data.undefined_address_fault_addr); DC_LOG_DEBUG(" inst_fault_addr : %08x", diag_data.inst_fetch_fault_addr); DC_LOG_DEBUG(" data_fault_addr : %08x", diag_data.data_write_fault_addr); @@ -1199,8 +1210,23 @@ bool dc_dmub_srv_is_hw_pwr_up(struct dc_dmub_srv *dc_dmub_srv, bool wait) return true; } +static int count_active_streams(const struct dc *dc) +{ + int i, count = 0; + + for (i = 0; i < dc->current_state->stream_count; ++i) { + struct dc_stream_state *stream = dc->current_state->streams[i]; + + if (stream && !stream->dpms_off) + count += 1; + } + + return count; +} + static void dc_dmub_srv_notify_idle(const struct dc *dc, bool allow_idle) { + volatile const struct dmub_shared_state_ips_fw *ips_fw; struct dc_dmub_srv *dc_dmub_srv; union dmub_rb_cmd cmd = {0}; @@ -1211,6 +1237,7 @@ static void dc_dmub_srv_notify_idle(const struct dc *dc, bool allow_idle) return; dc_dmub_srv = dc->ctx->dmub_srv; + ips_fw = &dc_dmub_srv->dmub->shared_state[DMUB_SHARED_SHARE_FEATURE__IPS_FW].data.ips_fw; memset(&cmd, 0, sizeof(cmd)); cmd.idle_opt_notify_idle.header.type = DMUB_CMD__IDLE_OPT; @@ -1226,6 +1253,12 @@ static void dc_dmub_srv_notify_idle(const struct dc *dc, bool allow_idle) &dc_dmub_srv->dmub->shared_state[DMUB_SHARED_SHARE_FEATURE__IPS_DRIVER].data.ips_driver; union dmub_shared_state_ips_driver_signals new_signals; + DC_LOG_IPS( + "%s wait idle (ips1_commit=%d ips2_commit=%d)", + __func__, + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + dc_dmub_srv_wait_idle(dc->ctx->dmub_srv); memset(&new_signals, 0, sizeof(new_signals)); @@ -1245,19 +1278,46 @@ static void dc_dmub_srv_notify_idle(const struct dc *dc, bool allow_idle) new_signals.bits.allow_pg = 1; new_signals.bits.allow_ips1 = 1; new_signals.bits.allow_ips2 = 1; + } else if (dc->config.disable_ips == DMUB_IPS_RCG_IN_ACTIVE_IPS2_IN_OFF) { + /* TODO: Move this logic out to hwseq */ + if (count_active_streams(dc) == 0) { + /* IPS2 - Display off */ + new_signals.bits.allow_pg = 1; + new_signals.bits.allow_ips1 = 1; + new_signals.bits.allow_ips2 = 1; + new_signals.bits.allow_z10 = 1; + } else { + /* RCG only */ + new_signals.bits.allow_pg = 0; + new_signals.bits.allow_ips1 = 1; + new_signals.bits.allow_ips2 = 0; + new_signals.bits.allow_z10 = 0; + } } ips_driver->signals = new_signals; } + DC_LOG_IPS( + "%s send allow_idle=%d (ips1_commit=%d ips2_commit=%d)", + __func__, + allow_idle, + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + /* NOTE: This does not use the "wake" interface since this is part of the wake path. */ /* We also do not perform a wait since DMCUB could enter idle after the notification. */ dm_execute_dmub_cmd(dc->ctx, &cmd, allow_idle ? DM_DMUB_WAIT_TYPE_NO_WAIT : DM_DMUB_WAIT_TYPE_WAIT); + + /* Register access should stop at this point. */ + if (allow_idle) + dc_dmub_srv->needs_idle_wake = true; } static void dc_dmub_srv_exit_low_power_state(const struct dc *dc) { struct dc_dmub_srv *dc_dmub_srv; + uint32_t rcg_exit_count = 0, ips1_exit_count = 0, ips2_exit_count = 0; if (dc->debug.dmcub_emulation) return; @@ -1274,40 +1334,113 @@ static void dc_dmub_srv_exit_low_power_state(const struct dc *dc) &dc_dmub_srv->dmub->shared_state[DMUB_SHARED_SHARE_FEATURE__IPS_DRIVER].data.ips_driver; union dmub_shared_state_ips_driver_signals prev_driver_signals = ips_driver->signals; + rcg_exit_count = ips_fw->rcg_exit_count; + ips1_exit_count = ips_fw->ips1_exit_count; + ips2_exit_count = ips_fw->ips2_exit_count; + ips_driver->signals.all = 0; - if (prev_driver_signals.bits.allow_ips2) { - udelay(dc->debug.ips2_eval_delay_us); + DC_LOG_IPS( + "%s (allow ips1=%d ips2=%d) (commit ips1=%d ips2=%d) (count rcg=%d ips1=%d ips2=%d)", + __func__, + ips_driver->signals.bits.allow_ips1, + ips_driver->signals.bits.allow_ips2, + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit, + ips_fw->rcg_entry_count, + ips_fw->ips1_entry_count, + ips_fw->ips2_entry_count); + + /* Note: register access has technically not resumed for DCN here, but we + * need to be message PMFW through our standard register interface. + */ + dc_dmub_srv->needs_idle_wake = false; + + if (prev_driver_signals.bits.allow_ips2 && + (!dc->debug.optimize_ips_handshake || + ips_fw->signals.bits.ips2_commit || !ips_fw->signals.bits.in_idle)) { + DC_LOG_IPS( + "wait IPS2 eval (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + + if (!dc->debug.optimize_ips_handshake || !ips_fw->signals.bits.ips2_commit) + udelay(dc->debug.ips2_eval_delay_us); if (ips_fw->signals.bits.ips2_commit) { + DC_LOG_IPS( + "exit IPS2 #1 (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + // Tell PMFW to exit low power state dc->clk_mgr->funcs->exit_low_power_state(dc->clk_mgr); + DC_LOG_IPS( + "wait IPS2 entry delay (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + // Wait for IPS2 entry upper bound udelay(dc->debug.ips2_entry_delay_us); + DC_LOG_IPS( + "exit IPS2 #2 (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + dc->clk_mgr->funcs->exit_low_power_state(dc->clk_mgr); + DC_LOG_IPS( + "wait IPS2 commit clear (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + while (ips_fw->signals.bits.ips2_commit) udelay(1); + DC_LOG_IPS( + "wait hw_pwr_up (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + if (!dc_dmub_srv_is_hw_pwr_up(dc->ctx->dmub_srv, true)) ASSERT(0); + DC_LOG_IPS( + "resync inbox1 (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + dmub_srv_sync_inbox1(dc->ctx->dmub_srv->dmub); } } dc_dmub_srv_notify_idle(dc, false); if (prev_driver_signals.bits.allow_ips1) { + DC_LOG_IPS( + "wait for IPS1 commit clear (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); + while (ips_fw->signals.bits.ips1_commit) udelay(1); + DC_LOG_IPS( + "wait for IPS1 commit clear done (ips1_commit=%d ips2_commit=%d)", + ips_fw->signals.bits.ips1_commit, + ips_fw->signals.bits.ips2_commit); } } if (!dc_dmub_srv_is_hw_pwr_up(dc->ctx->dmub_srv, true)) ASSERT(0); + + DC_LOG_IPS("%s exit (count rcg=%d ips1=%d ips2=%d)", + __func__, + rcg_exit_count, + ips1_exit_count, + ips2_exit_count); } void dc_dmub_srv_set_power_state(struct dc_dmub_srv *dc_dmub_srv, enum dc_acpi_cm_power_state powerState) @@ -1335,21 +1468,42 @@ void dc_dmub_srv_apply_idle_power_optimizations(const struct dc *dc, bool allow_ if (dc_dmub_srv->idle_allowed == allow_idle) return; + DC_LOG_IPS("%s state change: old=%d new=%d", __func__, dc_dmub_srv->idle_allowed, allow_idle); + /* * Entering a low power state requires a driver notification. * Powering up the hardware requires notifying PMFW and DMCUB. * Clearing the driver idle allow requires a DMCUB command. * DMCUB commands requires the DMCUB to be powered up and restored. - * - * Exit out early to prevent an infinite loop of DMCUB commands - * triggering exit low power - use software state to track this. */ - dc_dmub_srv->idle_allowed = allow_idle; - if (!allow_idle) + if (!allow_idle) { + dc_dmub_srv->idle_exit_counter += 1; + dc_dmub_srv_exit_low_power_state(dc); - else + /* + * Idle is considered fully exited only after the sequence above + * fully completes. If we have a race of two threads exiting + * at the same time then it's safe to perform the sequence + * twice as long as we're not re-entering. + * + * Infinite command submission is avoided by using the + * dm_execute_dmub_cmd submission instead of the "wake" helpers. + */ + dc_dmub_srv->idle_allowed = false; + + dc_dmub_srv->idle_exit_counter -= 1; + if (dc_dmub_srv->idle_exit_counter < 0) { + ASSERT(0); + dc_dmub_srv->idle_exit_counter = 0; + } + } else { + /* Consider idle as notified prior to the actual submission to + * prevent multiple entries. */ + dc_dmub_srv->idle_allowed = true; + dc_dmub_srv_notify_idle(dc, allow_idle); + } } bool dc_wake_and_execute_dmub_cmd(const struct dc_context *ctx, union dmub_rb_cmd *cmd, @@ -1384,7 +1538,8 @@ bool dc_wake_and_execute_dmub_cmd_list(const struct dc_context *ctx, unsigned in else result = dm_execute_dmub_cmd(ctx, cmd, wait_type); - if (result && reallow_idle && !ctx->dc->debug.disable_dmub_reallow_idle) + if (result && reallow_idle && dc_dmub_srv->idle_exit_counter == 0 && + !ctx->dc->debug.disable_dmub_reallow_idle) dc_dmub_srv_apply_idle_power_optimizations(ctx->dc, true); return result; @@ -1433,8 +1588,10 @@ bool dc_wake_and_execute_gpint(const struct dc_context *ctx, enum dmub_gpint_com result = dc_dmub_execute_gpint(ctx, command_code, param, response, wait_type); - if (result && reallow_idle && !ctx->dc->debug.disable_dmub_reallow_idle) + if (result && reallow_idle && dc_dmub_srv->idle_exit_counter == 0 && + !ctx->dc->debug.disable_dmub_reallow_idle) dc_dmub_srv_apply_idle_power_optimizations(ctx->dc, true); return result; } + |