diff options
Diffstat (limited to 'drivers/misc/habanalabs/goya/goya_hwmgr.c')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya_hwmgr.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/goya/goya_hwmgr.c b/drivers/misc/habanalabs/goya/goya_hwmgr.c index 088692c852b6..a2a700c3d597 100644 --- a/drivers/misc/habanalabs/goya/goya_hwmgr.c +++ b/drivers/misc/habanalabs/goya/goya_hwmgr.c @@ -230,18 +230,127 @@ static ssize_t ic_clk_curr_show(struct device *dev, return sprintf(buf, "%lu\n", value); } +static ssize_t pm_mng_profile_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + + if (hl_device_disabled_or_in_reset(hdev)) + return -ENODEV; + + return sprintf(buf, "%s\n", + (hdev->pm_mng_profile == PM_AUTO) ? "auto" : + (hdev->pm_mng_profile == PM_MANUAL) ? "manual" : + "unknown"); +} + +static ssize_t pm_mng_profile_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + + if (hl_device_disabled_or_in_reset(hdev)) { + count = -ENODEV; + goto out; + } + + mutex_lock(&hdev->fpriv_list_lock); + + if (hdev->compute_ctx) { + dev_err(hdev->dev, + "Can't change PM profile while compute context is opened on the device\n"); + count = -EPERM; + goto unlock_mutex; + } + + if (strncmp("auto", buf, strlen("auto")) == 0) { + /* Make sure we are in LOW PLL when changing modes */ + if (hdev->pm_mng_profile == PM_MANUAL) { + hdev->curr_pll_profile = PLL_HIGH; + hl_device_set_frequency(hdev, PLL_LOW); + hdev->pm_mng_profile = PM_AUTO; + } + } else if (strncmp("manual", buf, strlen("manual")) == 0) { + if (hdev->pm_mng_profile == PM_AUTO) { + /* Must release the lock because the work thread also + * takes this lock. But before we release it, set + * the mode to manual so nothing will change if a user + * suddenly opens the device + */ + hdev->pm_mng_profile = PM_MANUAL; + + mutex_unlock(&hdev->fpriv_list_lock); + + /* Flush the current work so we can return to the user + * knowing that he is the only one changing frequencies + */ + flush_delayed_work(&hdev->work_freq); + + return count; + } + } else { + dev_err(hdev->dev, "value should be auto or manual\n"); + count = -EINVAL; + } + +unlock_mutex: + mutex_unlock(&hdev->fpriv_list_lock); +out: + return count; +} + +static ssize_t high_pll_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + + if (hl_device_disabled_or_in_reset(hdev)) + return -ENODEV; + + return sprintf(buf, "%u\n", hdev->high_pll); +} + +static ssize_t high_pll_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + int rc; + + if (hl_device_disabled_or_in_reset(hdev)) { + count = -ENODEV; + goto out; + } + + rc = kstrtoul(buf, 0, &value); + + if (rc) { + count = -EINVAL; + goto out; + } + + hdev->high_pll = value; + +out: + return count; +} + +static DEVICE_ATTR_RW(high_pll); static DEVICE_ATTR_RW(ic_clk); static DEVICE_ATTR_RO(ic_clk_curr); static DEVICE_ATTR_RW(mme_clk); static DEVICE_ATTR_RO(mme_clk_curr); +static DEVICE_ATTR_RW(pm_mng_profile); static DEVICE_ATTR_RW(tpc_clk); static DEVICE_ATTR_RO(tpc_clk_curr); static struct attribute *goya_dev_attrs[] = { + &dev_attr_high_pll.attr, &dev_attr_ic_clk.attr, &dev_attr_ic_clk_curr.attr, &dev_attr_mme_clk.attr, &dev_attr_mme_clk_curr.attr, + &dev_attr_pm_mng_profile.attr, &dev_attr_tpc_clk.attr, &dev_attr_tpc_clk_curr.attr, NULL, |