Hi, On 7/12/22 16:58, Shyam Sundar S K wrote: > The transition to auto-mode happens when the PMF driver receives > AMT (Auto Mode transition) event. transition logic will reside in the > PMF driver but the events would come from other supported drivers[1]. > > The thermal parameters would vary between when a performance "on-lap" mode > is detected and versus when not. The CQL event would get triggered from > other drivers, so that PMF driver would adjust the system thermal config > based on the ACPI inputs. > > OEMs can control whether or not to enable AMT or CQL via other supported > drivers[1] but the actual transition logic resides in the AMD PMF driver. > When an AMT event is received the automatic mode transition RAPL algorithm > will run. When a CQL event is received an performance "on-lap" mode will > be enabled and thermal parameters will be adjusted accordingly. > > [1] > Link: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?h=review-hans&id=755b249250df1b612d982f3b702c831b26ecdf73 > > Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx> > --- > drivers/platform/x86/amd/pmf/acpi.c | 90 +++++++++++++++++++++++- > drivers/platform/x86/amd/pmf/auto-mode.c | 22 ++++++ > drivers/platform/x86/amd/pmf/cnqf.c | 4 +- > drivers/platform/x86/amd/pmf/core.c | 18 ++++- > drivers/platform/x86/amd/pmf/pmf.h | 29 +++++++- > 5 files changed, 156 insertions(+), 7 deletions(-) > > diff --git a/drivers/platform/x86/amd/pmf/acpi.c b/drivers/platform/x86/amd/pmf/acpi.c > index e9f33e61659f..4bde86aeafa0 100644 > --- a/drivers/platform/x86/amd/pmf/acpi.c > +++ b/drivers/platform/x86/amd/pmf/acpi.c > @@ -12,6 +12,8 @@ > #include "pmf.h" > > #define APMF_METHOD "\\_SB_.PMF_.APMF" > +#define APMF_CQL_NOTIFICATION 2 > +#define APMF_AMT_NOTIFICATION 3 > > static unsigned long supported_func; > > @@ -55,6 +57,7 @@ static void apmf_if_parse_functions(struct apmf_if_functions *func, u32 mask) > { > func->system_params = mask & APMF_FUNC_GET_SYS_PARAMS; > func->static_slider_granular = mask & APMF_FUNC_STATIC_SLIDER_GRANULAR; > + func->sbios_requests = mask & APMF_FUNC_SBIOS_REQUESTS; > func->auto_mode_def = mask & APMF_FUNC_AUTO_MODE; > func->fan_table_idx = mask & APMF_FUNC_SET_FAN_IDX; > func->dyn_slider_ac = mask & APMF_FUNC_DYN_SLIDER_GRANULAR_AC; > @@ -292,6 +295,36 @@ int apmf_get_dyn_slider_def_dc(struct apmf_if *ampf_if, struct apmf_dyn_slider_o > return err; > } > > +int apmf_get_sbios_requests(struct apmf_if *ampf_if, struct apmf_sbios_req *req) > +{ > + union acpi_object *info; > + size_t size; > + int err = 0; > + > + info = apmf_if_call(ampf_if, APMF_FUNC_SBIOS_REQUESTS, NULL); > + if (!info) > + return -EIO; > + > + size = *(u16 *)info->buffer.pointer; > + > + if (size < sizeof(union acpi_object)) { > + pr_err("PMF: buffer too small %zu\n", size); > + err = -EINVAL; > + goto out; > + } > + > + size = min(sizeof(*req), size); > + memset(req, 0, sizeof(*req)); > + memcpy(req, info->buffer.pointer, size); > + > + pr_debug("PMF: %s: pending_req:%d cql:%d amt:%d\n", __func__, > + req->pending_req, req->cql_event, req->amt_event); > + > +out: > + kfree(info); > + return err; > +} > + > static acpi_handle apmf_if_probe_handle(void) > { > acpi_handle handle = NULL; > @@ -312,18 +345,62 @@ static acpi_handle apmf_if_probe_handle(void) > return handle; > } > > +static void apmf_event_handler(acpi_handle handle, u32 event, void *data) > +{ > + struct amd_pmf_dev *pmf_dev = data; > + struct apmf_if *apmf_if = pmf_dev->apmf_if; > + int ret; > + > + if (apmf_if->func.sbios_requests) { > + struct apmf_sbios_req req; > + > + ret = apmf_get_sbios_requests(apmf_if, &req); > + if (ret) { > + dev_err(pmf_dev->dev, "Failed to get SBIOS requests:%d\n", ret); > + return; > + } > + if (req.pending_req & BIT(APMF_AMT_NOTIFICATION)) { > + pr_debug("PMF: AMT is supported and notifications %s\n", > + req.amt_event ? "Enabled" : "Disabled"); > + if (req.amt_event) > + pmf_dev->is_amt_event = true; > + else > + pmf_dev->is_amt_event = !!req.amt_event; > + } > + > + if (req.pending_req & BIT(APMF_CQL_NOTIFICATION)) { > + pr_debug("PMF: CQL is supported and notifications %s\n", > + req.cql_event ? "Enabled" : "Disabled"); > + if (req.cql_event) > + pmf_dev->is_cql_event = true; > + else > + pmf_dev->is_cql_event = !!req.cql_event; > + > + /* update the target mode information */ > + amd_pmf_update_2_cql(pmf_dev); > + } > + } > +} > + > void apmf_acpi_deinit(struct amd_pmf_dev *pmf_dev) > { > + acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); > + > if (pmf_dev->apmf_if->func.sbios_heartbeat) > cancel_delayed_work_sync(&pmf_dev->heart_beat); > + > + if (is_apmf_func_supported(APMF_FUNC_AUTO_MODE)) > + acpi_remove_notify_handler(ahandle, ACPI_ALL_NOTIFY, > + apmf_event_handler); > } > > int apmf_acpi_init(struct amd_pmf_dev *pmf_dev) > { > + acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); > struct apmf_notification_cfg *n; > acpi_handle apmf_if_handle; > struct apmf_if *apmf_if; > - int ret; > + int ret, status; > > apmf_if_handle = apmf_if_probe_handle(); > if (!apmf_if_handle) > @@ -360,6 +437,17 @@ int apmf_acpi_init(struct amd_pmf_dev *pmf_dev) > schedule_delayed_work(&pmf_dev->heart_beat, 0); > } > > + /* Install the APMF Notify handler */ > + if (is_apmf_func_supported(APMF_FUNC_AUTO_MODE)) { > + status = acpi_install_notify_handler(ahandle, > + ACPI_ALL_NOTIFY, > + apmf_event_handler, pmf_dev); > + if (ACPI_FAILURE(status)) { > + dev_err(pmf_dev->dev, "failed to install notify handler\n"); > + return -ENODEV; > + } > + } > + > out: > return ret; > } > diff --git a/drivers/platform/x86/amd/pmf/auto-mode.c b/drivers/platform/x86/amd/pmf/auto-mode.c > index 954fde25e71e..a85ef4b95cdb 100644 > --- a/drivers/platform/x86/amd/pmf/auto-mode.c > +++ b/drivers/platform/x86/amd/pmf/auto-mode.c > @@ -111,6 +111,13 @@ void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t t > bool update = false; > int i, j; > > + if (!dev->amt_running && dev->is_amt_event) { > + dev_dbg(dev->dev, "setting AMT thermals\n"); > + amd_pmf_handle_automode(dev, SLIDER_OP_SET, config_store.current_mode, NULL); > + dev->amt_running = true; > + return; > + } > + > /* Get the average moving average computed by auto mode algorithm */ > avg_power = amd_pmf_get_moving_avg(socket_power); > > @@ -161,6 +168,21 @@ void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t t > } > } > > +void amd_pmf_update_2_cql(struct amd_pmf_dev *dev) > +{ > + config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode = > + dev->is_cql_event ? AUTO_PERFORMANCE_ON_LAP : AUTO_PERFORMANCE; > + if ((config_store.current_mode == AUTO_PERFORMANCE || > + config_store.current_mode == AUTO_PERFORMANCE_ON_LAP) && > + config_store.current_mode != > + config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode) { > + config_store.current_mode = > + config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode; > + amd_pmf_handle_automode(dev, SLIDER_OP_SET, config_store.current_mode, NULL); > + } > + dev_dbg(dev->dev, "updated CQL thermals\n"); > +} > + > static void amd_pmf_get_power_threshold(void) > { > config_store.transition[AUTO_TRANSITION_TO_QUIET].power_threshold = > diff --git a/drivers/platform/x86/amd/pmf/cnqf.c b/drivers/platform/x86/amd/pmf/cnqf.c > index 2b03ae1ad37f..eba8f0d79a62 100644 > --- a/drivers/platform/x86/amd/pmf/cnqf.c > +++ b/drivers/platform/x86/amd/pmf/cnqf.c > @@ -101,7 +101,7 @@ static const char *state_as_str(unsigned int state) > } > } > > -void amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_lapsed_ms) > +void amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_elapsed_ms) > { > struct cnqf_tran_params *tp; > int src, i, j, index = 0; > @@ -117,7 +117,7 @@ void amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_ > } > > for (i = 0; i < CNQF_TRANSITION_MAX; i++) { > - config_store.trans_param[src][i].timer += time_lapsed_ms; > + config_store.trans_param[src][i].timer += time_elapsed_ms; > config_store.trans_param[src][i].total_power += socket_power; > config_store.trans_param[src][i].count++; > > diff --git a/drivers/platform/x86/amd/pmf/core.c b/drivers/platform/x86/amd/pmf/core.c > index 674ddf599135..2a3dacfb2005 100644 > --- a/drivers/platform/x86/amd/pmf/core.c > +++ b/drivers/platform/x86/amd/pmf/core.c > @@ -109,10 +109,15 @@ static void amd_pmf_get_metrics(struct work_struct *work) > enum platform_profile_option current_profile; > ktime_t time_elapsed_ms; > int socket_power; > + u8 mode; > > /* Get the current profile information */ > platform_profile_get(¤t_profile); > > + if (!dev->is_amt_event) > + dev_dbg(dev->dev, "%s amt event: %s\n", __func__, > + dev->is_amt_event ? "Enabled" : "Disabled"); > + > /* Transfer table contents */ > memset(&dev->m_table, 0, sizeof(dev->m_table)); > amd_pmf_send_cmd(dev, SET_TRANSFER_TABLE, 0, 7, NULL); > @@ -123,8 +128,17 @@ static void amd_pmf_get_metrics(struct work_struct *work) > socket_power = dev->m_table.apu_power + dev->m_table.dgpu_power; > > if (current_profile == PLATFORM_PROFILE_BALANCED) { Hmm, I guess this is also why the platform_profile_get() is necessary ? Because on Thinkpads thinkpad_acpi is expected to be the platform_profile provider and then the PMF code wants to know the platform_profile setting from thinkpad_acpi ? Can you please explain the expected interactions between thinkpad_acpi and this code here a bit more ? Since we now only call amd_pmf_trans_automode() based on the AMT flag and that flag is controlled by the thinkpad BIOS/EC can we not expect that flag to be cleared when the profile is not balanced and can we thus not just drop the current_profile == PLATFORM_PROFILE_BALANCED check all together? It seems to me that if current_profile == PLATFORM_PROFILE_BALANCED then enable AMT, else disable it, logic belongs inside thinkpad_acpi and not here? Regards, Hans > - /* Apply the Auto Mode transition */ > - amd_pmf_trans_automode(dev, socket_power, time_elapsed_ms); > + if (dev->is_amt_event) { > + /* Apply the Auto Mode transition */ > + amd_pmf_trans_automode(dev, socket_power, time_elapsed_ms); > + } else if (!dev->is_amt_event && dev->amt_running) { > + pr_debug("resetting AMT thermals\n"); > + mode = amd_pmf_get_pprof_modes(dev); > + amd_pmf_update_slider(dev, SLIDER_OP_SET, mode, NULL); > + dev->amt_running = false; > + } > + } else { > + dev->amt_running = false; > } > > if (dev->cnqf_feat) { > diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h > index 0532f49e9613..9ae9812353cd 100644 > --- a/drivers/platform/x86/amd/pmf/pmf.h > +++ b/drivers/platform/x86/amd/pmf/pmf.h > @@ -17,6 +17,7 @@ > /* APMF Functions */ > #define APMF_FUNC_VERIFY_INTERFACE 0 > #define APMF_FUNC_GET_SYS_PARAMS 1 > +#define APMF_FUNC_SBIOS_REQUESTS 2 > #define APMF_FUNC_SBIOS_HEARTBEAT 4 > #define APMF_FUNC_AUTO_MODE 5 > #define APMF_FUNC_SET_FAN_IDX 7 > @@ -51,6 +52,7 @@ > /* AMD PMF BIOS interfaces */ > struct apmf_if_functions { > bool system_params; > + bool sbios_requests; > bool sbios_heartbeat; > bool auto_mode_def; > bool fan_table_idx; > @@ -84,6 +86,24 @@ struct apmf_system_params { > u32 heartbeat_int; > } __packed; > > +struct apmf_sbios_req { > + u16 size; > + u32 pending_req; > + u8 rsd; > + u8 cql_event; > + u8 amt_event; > + u32 fppt; > + u32 sppt; > + u32 fppt_apu_only; > + u32 spl; > + u32 stt_min_limit; > + u8 skin_temp_apu; > + u8 skin_temp_hs2; > + u8 dps_enable; > + u32 custom_policy_1; > + u32 custom_policy_2; > +} __packed; > + > struct apmf_fan_idx { > u16 size; > u8 fan_ctl_mode; > @@ -171,6 +191,9 @@ struct amd_pmf_dev { > #endif /* CONFIG_DEBUG_FS */ > bool cnqf_feat; > bool cnqf_running; > + bool is_amt_event; > + bool is_cql_event; > + bool amt_running; > }; > > struct apmf_sps_prop_granular { > @@ -417,9 +440,11 @@ int apmf_update_fan_idx(struct apmf_if *ampf_if, bool manual, u32 idx); > /* Auto Mode Layer */ > void amd_pmf_load_defaults_auto_mode(struct amd_pmf_dev *dev); > int apmf_get_auto_mode_def(struct apmf_if *ampf_if, struct apmf_auto_mode *data); > +int apmf_get_sbios_requests(struct apmf_if *ampf_if, struct apmf_sbios_req *req); > void amd_pmf_init_auto_mode(struct amd_pmf_dev *dev); > void amd_pmf_deinit_auto_mode(struct amd_pmf_dev *dev); > -void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t time_lapsed_ms); > +void amd_pmf_update_2_cql(struct amd_pmf_dev *dev); > +void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t time_elapsed_ms); > > /* CnQF Layer */ > int apmf_get_dyn_slider_def_ac(struct apmf_if *ampf_if, struct apmf_dyn_slider_output *data); > @@ -427,6 +452,6 @@ int apmf_get_dyn_slider_def_dc(struct apmf_if *ampf_if, struct apmf_dyn_slider_o > void amd_pmf_init_cnqf(struct amd_pmf_dev *dev); > void amd_pmf_deinit_cnqf(struct amd_pmf_dev *dev); > void amd_pmf_load_defaults_cnqf(struct amd_pmf_dev *dev); > -void amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_lapsed_ms); > +void amd_pmf_trans_cnqf(struct amd_pmf_dev *dev, int socket_power, ktime_t time_elapsed_ms); > > #endif /* PMF_H */
