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path: root/drivers/misc/habanalabs/goya/goya_hwmgr.c
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Diffstat (limited to 'drivers/misc/habanalabs/goya/goya_hwmgr.c')
-rw-r--r--drivers/misc/habanalabs/goya/goya_hwmgr.c387
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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-08 10:18:39 +0000