Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Shyam Sundar S K | 2329 | 99.28% | 17 | 80.95% |
Mario Limonciello | 9 | 0.38% | 2 | 9.52% |
SF Markus Elfring | 8 | 0.34% | 2 | 9.52% |
Total | 2346 | 21 |
// SPDX-License-Identifier: GPL-2.0 /* * AMD Platform Management Framework Driver * * Copyright (c) 2022, Advanced Micro Devices, Inc. * All Rights Reserved. * * Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> */ #include <linux/acpi.h> #include "pmf.h" #define APMF_CQL_NOTIFICATION 2 #define APMF_AMT_NOTIFICATION 3 static union acpi_object *apmf_if_call(struct amd_pmf_dev *pdev, int fn, struct acpi_buffer *param) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; acpi_handle ahandle = ACPI_HANDLE(pdev->dev); struct acpi_object_list apmf_if_arg_list; union acpi_object apmf_if_args[2]; acpi_status status; apmf_if_arg_list.count = 2; apmf_if_arg_list.pointer = &apmf_if_args[0]; apmf_if_args[0].type = ACPI_TYPE_INTEGER; apmf_if_args[0].integer.value = fn; if (param) { apmf_if_args[1].type = ACPI_TYPE_BUFFER; apmf_if_args[1].buffer.length = param->length; apmf_if_args[1].buffer.pointer = param->pointer; } else { apmf_if_args[1].type = ACPI_TYPE_INTEGER; apmf_if_args[1].integer.value = 0; } status = acpi_evaluate_object(ahandle, "APMF", &apmf_if_arg_list, &buffer); if (ACPI_FAILURE(status)) { dev_err(pdev->dev, "APMF method:%d call failed\n", fn); kfree(buffer.pointer); return NULL; } return buffer.pointer; } static int apmf_if_call_store_buffer(struct amd_pmf_dev *pdev, int fn, void *dest, size_t out_sz) { union acpi_object *info; size_t size; int err = 0; info = apmf_if_call(pdev, fn, NULL); if (!info) return -EIO; if (info->type != ACPI_TYPE_BUFFER) { dev_err(pdev->dev, "object is not a buffer\n"); err = -EINVAL; goto out; } if (info->buffer.length < 2) { dev_err(pdev->dev, "buffer too small\n"); err = -EINVAL; goto out; } size = *(u16 *)info->buffer.pointer; if (info->buffer.length < size) { dev_err(pdev->dev, "buffer smaller then headersize %u < %zu\n", info->buffer.length, size); err = -EINVAL; goto out; } if (size < out_sz) { dev_err(pdev->dev, "buffer too small %zu\n", size); err = -EINVAL; goto out; } memcpy(dest, info->buffer.pointer, out_sz); out: kfree(info); return err; } static union acpi_object *apts_if_call(struct amd_pmf_dev *pdev, u32 state_index) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; acpi_handle ahandle = ACPI_HANDLE(pdev->dev); struct acpi_object_list apts_if_arg_list; union acpi_object apts_if_args[3]; acpi_status status; apts_if_arg_list.count = 3; apts_if_arg_list.pointer = &apts_if_args[0]; apts_if_args[0].type = ACPI_TYPE_INTEGER; apts_if_args[0].integer.value = 1; apts_if_args[1].type = ACPI_TYPE_INTEGER; apts_if_args[1].integer.value = state_index; apts_if_args[2].type = ACPI_TYPE_INTEGER; apts_if_args[2].integer.value = 0; status = acpi_evaluate_object(ahandle, "APTS", &apts_if_arg_list, &buffer); if (ACPI_FAILURE(status)) { dev_err(pdev->dev, "APTS state_idx:%u call failed\n", state_index); kfree(buffer.pointer); return NULL; } return buffer.pointer; } static int apts_if_call_store_buffer(struct amd_pmf_dev *pdev, u32 index, void *data, size_t out_sz) { union acpi_object *info; size_t size; int err = 0; info = apts_if_call(pdev, index); if (!info) return -EIO; if (info->type != ACPI_TYPE_BUFFER) { dev_err(pdev->dev, "object is not a buffer\n"); err = -EINVAL; goto out; } size = *(u16 *)info->buffer.pointer; if (info->buffer.length < size) { dev_err(pdev->dev, "buffer smaller than header size %u < %zu\n", info->buffer.length, size); err = -EINVAL; goto out; } if (size < out_sz) { dev_err(pdev->dev, "buffer too small %zu\n", size); err = -EINVAL; goto out; } memcpy(data, info->buffer.pointer, out_sz); out: kfree(info); return err; } int is_apmf_func_supported(struct amd_pmf_dev *pdev, unsigned long index) { /* If bit-n is set, that indicates function n+1 is supported */ return !!(pdev->supported_func & BIT(index - 1)); } int apts_get_static_slider_granular_v2(struct amd_pmf_dev *pdev, struct amd_pmf_apts_granular_output *data, u32 apts_idx) { if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) return -EINVAL; return apts_if_call_store_buffer(pdev, apts_idx, data, sizeof(*data)); } int apmf_get_static_slider_granular_v2(struct amd_pmf_dev *pdev, struct apmf_static_slider_granular_output_v2 *data) { if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) return -EINVAL; return apmf_if_call_store_buffer(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR, data, sizeof(*data)); } int apmf_get_static_slider_granular(struct amd_pmf_dev *pdev, struct apmf_static_slider_granular_output *data) { if (!is_apmf_func_supported(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) return -EINVAL; return apmf_if_call_store_buffer(pdev, APMF_FUNC_STATIC_SLIDER_GRANULAR, data, sizeof(*data)); } int apmf_os_power_slider_update(struct amd_pmf_dev *pdev, u8 event) { struct os_power_slider args; struct acpi_buffer params; union acpi_object *info; args.size = sizeof(args); args.slider_event = event; params.length = sizeof(args); params.pointer = (void *)&args; info = apmf_if_call(pdev, APMF_FUNC_OS_POWER_SLIDER_UPDATE, ¶ms); if (!info) return -EIO; kfree(info); return 0; } static void apmf_sbios_heartbeat_notify(struct work_struct *work) { struct amd_pmf_dev *dev = container_of(work, struct amd_pmf_dev, heart_beat.work); union acpi_object *info; dev_dbg(dev->dev, "Sending heartbeat to SBIOS\n"); info = apmf_if_call(dev, APMF_FUNC_SBIOS_HEARTBEAT, NULL); if (!info) return; schedule_delayed_work(&dev->heart_beat, msecs_to_jiffies(dev->hb_interval * 1000)); kfree(info); } int amd_pmf_notify_sbios_heartbeat_event_v2(struct amd_pmf_dev *dev, u8 flag) { struct sbios_hb_event_v2 args = { }; struct acpi_buffer params; union acpi_object *info; args.size = sizeof(args); switch (flag) { case ON_LOAD: args.load = 1; break; case ON_UNLOAD: args.unload = 1; break; case ON_SUSPEND: args.suspend = 1; break; case ON_RESUME: args.resume = 1; break; default: dev_dbg(dev->dev, "Failed to send v2 heartbeat event, flag:0x%x\n", flag); return -EINVAL; } params.length = sizeof(args); params.pointer = &args; info = apmf_if_call(dev, APMF_FUNC_SBIOS_HEARTBEAT_V2, ¶ms); if (!info) return -EIO; kfree(info); return 0; } int apmf_update_fan_idx(struct amd_pmf_dev *pdev, bool manual, u32 idx) { union acpi_object *info; struct apmf_fan_idx args; struct acpi_buffer params; args.size = sizeof(args); args.fan_ctl_mode = manual; args.fan_ctl_idx = idx; params.length = sizeof(args); params.pointer = (void *)&args; info = apmf_if_call(pdev, APMF_FUNC_SET_FAN_IDX, ¶ms); if (!info) return -EIO; kfree(info); return 0; } int apmf_get_auto_mode_def(struct amd_pmf_dev *pdev, struct apmf_auto_mode *data) { return apmf_if_call_store_buffer(pdev, APMF_FUNC_AUTO_MODE, data, sizeof(*data)); } int apmf_get_sbios_requests_v2(struct amd_pmf_dev *pdev, struct apmf_sbios_req_v2 *req) { return apmf_if_call_store_buffer(pdev, APMF_FUNC_SBIOS_REQUESTS, req, sizeof(*req)); } int apmf_get_sbios_requests(struct amd_pmf_dev *pdev, struct apmf_sbios_req *req) { return apmf_if_call_store_buffer(pdev, APMF_FUNC_SBIOS_REQUESTS, req, sizeof(*req)); } static void apmf_event_handler(acpi_handle handle, u32 event, void *data) { struct amd_pmf_dev *pmf_dev = data; struct apmf_sbios_req req; int ret; mutex_lock(&pmf_dev->update_mutex); ret = apmf_get_sbios_requests(pmf_dev, &req); if (ret) { dev_err(pmf_dev->dev, "Failed to get SBIOS requests:%d\n", ret); goto out; } if (req.pending_req & BIT(APMF_AMT_NOTIFICATION)) { dev_dbg(pmf_dev->dev, "AMT is supported and notifications %s\n", req.amt_event ? "Enabled" : "Disabled"); pmf_dev->amt_enabled = !!req.amt_event; if (pmf_dev->amt_enabled) amd_pmf_handle_amt(pmf_dev); else amd_pmf_reset_amt(pmf_dev); } if (req.pending_req & BIT(APMF_CQL_NOTIFICATION)) { dev_dbg(pmf_dev->dev, "CQL is supported and notifications %s\n", req.cql_event ? "Enabled" : "Disabled"); /* update the target mode information */ if (pmf_dev->amt_enabled) amd_pmf_update_2_cql(pmf_dev, req.cql_event); } out: mutex_unlock(&pmf_dev->update_mutex); } static int apmf_if_verify_interface(struct amd_pmf_dev *pdev) { struct apmf_verify_interface output; int err; err = apmf_if_call_store_buffer(pdev, APMF_FUNC_VERIFY_INTERFACE, &output, sizeof(output)); if (err) return err; /* only set if not already set by a quirk */ if (!pdev->supported_func) pdev->supported_func = output.supported_functions; dev_dbg(pdev->dev, "supported functions:0x%x notifications:0x%x version:%u\n", output.supported_functions, output.notification_mask, output.version); pdev->pmf_if_version = output.version; return 0; } static int apmf_get_system_params(struct amd_pmf_dev *dev) { struct apmf_system_params params; int err; if (!is_apmf_func_supported(dev, APMF_FUNC_GET_SYS_PARAMS)) return -EINVAL; err = apmf_if_call_store_buffer(dev, APMF_FUNC_GET_SYS_PARAMS, ¶ms, sizeof(params)); if (err) return err; dev_dbg(dev->dev, "system params mask:0x%x flags:0x%x cmd_code:0x%x heartbeat:%d\n", params.valid_mask, params.flags, params.command_code, params.heartbeat_int); params.flags = params.flags & params.valid_mask; dev->hb_interval = params.heartbeat_int; return 0; } int apmf_get_dyn_slider_def_ac(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data) { return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_AC, data, sizeof(*data)); } int apmf_get_dyn_slider_def_dc(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data) { return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_DC, data, sizeof(*data)); } int apmf_install_handler(struct amd_pmf_dev *pmf_dev) { acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); acpi_status status; /* Install the APMF Notify handler */ if (is_apmf_func_supported(pmf_dev, APMF_FUNC_AUTO_MODE) && is_apmf_func_supported(pmf_dev, APMF_FUNC_SBIOS_REQUESTS)) { 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; } /* Call the handler once manually to catch up with possibly missed notifies. */ apmf_event_handler(ahandle, 0, pmf_dev); } return 0; } static acpi_status apmf_walk_resources(struct acpi_resource *res, void *data) { struct amd_pmf_dev *dev = data; switch (res->type) { case ACPI_RESOURCE_TYPE_ADDRESS64: dev->policy_addr = res->data.address64.address.minimum; dev->policy_sz = res->data.address64.address.address_length; break; case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: dev->policy_addr = res->data.fixed_memory32.address; dev->policy_sz = res->data.fixed_memory32.address_length; break; } if (!dev->policy_addr || dev->policy_sz > POLICY_BUF_MAX_SZ || dev->policy_sz == 0) { pr_err("Incorrect Policy params, possibly a SBIOS bug\n"); return AE_ERROR; } return AE_OK; } int apmf_check_smart_pc(struct amd_pmf_dev *pmf_dev) { acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); acpi_status status; status = acpi_walk_resources(ahandle, METHOD_NAME__CRS, apmf_walk_resources, pmf_dev); if (ACPI_FAILURE(status)) { dev_dbg(pmf_dev->dev, "acpi_walk_resources failed :%d\n", status); return -EINVAL; } return 0; } void apmf_acpi_deinit(struct amd_pmf_dev *pmf_dev) { acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); if (pmf_dev->hb_interval && pmf_dev->pmf_if_version == PMF_IF_V1) cancel_delayed_work_sync(&pmf_dev->heart_beat); if (is_apmf_func_supported(pmf_dev, APMF_FUNC_AUTO_MODE) && is_apmf_func_supported(pmf_dev, APMF_FUNC_SBIOS_REQUESTS)) acpi_remove_notify_handler(ahandle, ACPI_ALL_NOTIFY, apmf_event_handler); } int apmf_acpi_init(struct amd_pmf_dev *pmf_dev) { int ret; ret = apmf_if_verify_interface(pmf_dev); if (ret) { dev_err(pmf_dev->dev, "APMF verify interface failed :%d\n", ret); goto out; } ret = apmf_get_system_params(pmf_dev); if (ret) { dev_dbg(pmf_dev->dev, "APMF apmf_get_system_params failed :%d\n", ret); goto out; } if (pmf_dev->hb_interval && pmf_dev->pmf_if_version == PMF_IF_V1) { /* send heartbeats only if the interval is not zero */ INIT_DELAYED_WORK(&pmf_dev->heart_beat, apmf_sbios_heartbeat_notify); schedule_delayed_work(&pmf_dev->heart_beat, 0); } out: return ret; }
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