diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/misc/habanalabs/goya/goya_hwmgr.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/goya/goya_hwmgr.c b/drivers/misc/habanalabs/goya/goya_hwmgr.c new file mode 100644 index 000000000..b59572175 --- /dev/null +++ b/drivers/misc/habanalabs/goya/goya_hwmgr.c @@ -0,0 +1,387 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright 2016-2022 HabanaLabs, Ltd. + * All Rights Reserved. + */ + +#include "goyaP.h" + +void goya_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq) +{ + struct goya_device *goya = hdev->asic_specific; + + if (!hdev->pdev) + return; + + switch (freq) { + case PLL_HIGH: + hl_fw_set_frequency(hdev, HL_GOYA_MME_PLL, hdev->high_pll); + hl_fw_set_frequency(hdev, HL_GOYA_TPC_PLL, hdev->high_pll); + hl_fw_set_frequency(hdev, HL_GOYA_IC_PLL, hdev->high_pll); + break; + case PLL_LOW: + hl_fw_set_frequency(hdev, HL_GOYA_MME_PLL, GOYA_PLL_FREQ_LOW); + hl_fw_set_frequency(hdev, HL_GOYA_TPC_PLL, GOYA_PLL_FREQ_LOW); + hl_fw_set_frequency(hdev, HL_GOYA_IC_PLL, GOYA_PLL_FREQ_LOW); + break; + case PLL_LAST: + hl_fw_set_frequency(hdev, HL_GOYA_MME_PLL, goya->mme_clk); + hl_fw_set_frequency(hdev, HL_GOYA_TPC_PLL, goya->tpc_clk); + hl_fw_set_frequency(hdev, HL_GOYA_IC_PLL, goya->ic_clk); + break; + default: + dev_err(hdev->dev, "unknown frequency setting\n"); + } +} + +static ssize_t mme_clk_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_MME_PLL, false); + + if (value < 0) + return value; + + return sprintf(buf, "%lu\n", value); +} + +static ssize_t mme_clk_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + struct goya_device *goya = hdev->asic_specific; + int rc; + long value; + + if (!hl_device_operational(hdev, NULL)) { + count = -ENODEV; + goto fail; + } + + if (goya->pm_mng_profile == PM_AUTO) { + count = -EPERM; + goto fail; + } + + rc = kstrtoul(buf, 0, &value); + + if (rc) { + count = -EINVAL; + goto fail; + } + + hl_fw_set_frequency(hdev, HL_GOYA_MME_PLL, value); + goya->mme_clk = value; + +fail: + return count; +} + +static ssize_t tpc_clk_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_TPC_PLL, false); + + if (value < 0) + return value; + + return sprintf(buf, "%lu\n", value); +} + +static ssize_t tpc_clk_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + struct goya_device *goya = hdev->asic_specific; + int rc; + long value; + + if (!hl_device_operational(hdev, NULL)) { + count = -ENODEV; + goto fail; + } + + if (goya->pm_mng_profile == PM_AUTO) { + count = -EPERM; + goto fail; + } + + rc = kstrtoul(buf, 0, &value); + + if (rc) { + count = -EINVAL; + goto fail; + } + + hl_fw_set_frequency(hdev, HL_GOYA_TPC_PLL, value); + goya->tpc_clk = value; + +fail: + return count; +} + +static ssize_t ic_clk_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_IC_PLL, false); + + if (value < 0) + return value; + + return sprintf(buf, "%lu\n", value); +} + +static ssize_t ic_clk_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + struct goya_device *goya = hdev->asic_specific; + int rc; + long value; + + if (!hl_device_operational(hdev, NULL)) { + count = -ENODEV; + goto fail; + } + + if (goya->pm_mng_profile == PM_AUTO) { + count = -EPERM; + goto fail; + } + + rc = kstrtoul(buf, 0, &value); + + if (rc) { + count = -EINVAL; + goto fail; + } + + hl_fw_set_frequency(hdev, HL_GOYA_IC_PLL, value); + goya->ic_clk = value; + +fail: + return count; +} + +static ssize_t mme_clk_curr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_MME_PLL, true); + + if (value < 0) + return value; + + return sprintf(buf, "%lu\n", value); +} + +static ssize_t tpc_clk_curr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_TPC_PLL, true); + + if (value < 0) + return value; + + return sprintf(buf, "%lu\n", value); +} + +static ssize_t ic_clk_curr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + long value; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + value = hl_fw_get_frequency(hdev, HL_GOYA_IC_PLL, true); + + if (value < 0) + return value; + + 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); + struct goya_device *goya = hdev->asic_specific; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + return sprintf(buf, "%s\n", + (goya->pm_mng_profile == PM_AUTO) ? "auto" : + (goya->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); + struct goya_device *goya = hdev->asic_specific; + + if (!hl_device_operational(hdev, NULL)) { + count = -ENODEV; + goto out; + } + + mutex_lock(&hdev->fpriv_list_lock); + + if (hdev->is_compute_ctx_active) { + 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 (goya->pm_mng_profile == PM_MANUAL) { + goya->curr_pll_profile = PLL_HIGH; + goya->pm_mng_profile = PM_AUTO; + goya_set_frequency(hdev, PLL_LOW); + } + } else if (strncmp("manual", buf, strlen("manual")) == 0) { + if (goya->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 + */ + goya->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 + */ + if (goya->goya_work) + flush_delayed_work(&goya->goya_work->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_operational(hdev, NULL)) + 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_operational(hdev, NULL)) { + 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_clk_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, +}; + +static ssize_t infineon_ver_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + struct cpucp_info *cpucp_info; + + cpucp_info = &hdev->asic_prop.cpucp_info; + + return sprintf(buf, "%#04x\n", le32_to_cpu(cpucp_info->infineon_version)); +} + +static DEVICE_ATTR_RO(infineon_ver); + +static struct attribute *goya_vrm_dev_attrs[] = { + &dev_attr_infineon_ver.attr, + NULL, +}; + +void goya_add_device_attr(struct hl_device *hdev, struct attribute_group *dev_clk_attr_grp, + struct attribute_group *dev_vrm_attr_grp) +{ + dev_clk_attr_grp->attrs = goya_clk_dev_attrs; + dev_vrm_attr_grp->attrs = goya_vrm_dev_attrs; +} |