summaryrefslogtreecommitdiffstats
path: root/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c')
-rw-r--r--drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c b/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c
new file mode 100644
index 000000000000..6dd2c2a1cd70
--- /dev/null
+++ b/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "gaudiP.h"
+#include "include/gaudi/gaudi_fw_if.h"
+
+void gaudi_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
+{
+ struct gaudi_device *gaudi = hdev->asic_specific;
+
+ if (freq == PLL_LAST)
+ hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
+}
+
+int gaudi_get_clk_rate(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk)
+{
+ long value;
+
+ if (hl_device_disabled_or_in_reset(hdev))
+ return -ENODEV;
+
+ value = hl_get_frequency(hdev, MME_PLL, false);
+
+ if (value < 0) {
+ dev_err(hdev->dev, "Failed to retrieve device max clock %ld\n",
+ value);
+ return value;
+ }
+
+ *max_clk = (value / 1000 / 1000);
+
+ value = hl_get_frequency(hdev, MME_PLL, true);
+
+ if (value < 0) {
+ dev_err(hdev->dev,
+ "Failed to retrieve device current clock %ld\n",
+ value);
+ return value;
+ }
+
+ *cur_clk = (value / 1000 / 1000);
+
+ return 0;
+}
+
+static ssize_t clk_max_freq_mhz_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hl_device *hdev = dev_get_drvdata(dev);
+ struct gaudi_device *gaudi = hdev->asic_specific;
+ long value;
+
+ if (hl_device_disabled_or_in_reset(hdev))
+ return -ENODEV;
+
+ value = hl_get_frequency(hdev, MME_PLL, false);
+
+ gaudi->max_freq_value = value;
+
+ return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static ssize_t clk_max_freq_mhz_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct hl_device *hdev = dev_get_drvdata(dev);
+ struct gaudi_device *gaudi = hdev->asic_specific;
+ int rc;
+ u64 value;
+
+ if (hl_device_disabled_or_in_reset(hdev)) {
+ count = -ENODEV;
+ goto fail;
+ }
+
+ rc = kstrtoull(buf, 0, &value);
+ if (rc) {
+ count = -EINVAL;
+ goto fail;
+ }
+
+ gaudi->max_freq_value = value * 1000 * 1000;
+
+ hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
+
+fail:
+ return count;
+}
+
+static ssize_t clk_cur_freq_mhz_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hl_device *hdev = dev_get_drvdata(dev);
+ long value;
+
+ if (hl_device_disabled_or_in_reset(hdev))
+ return -ENODEV;
+
+ value = hl_get_frequency(hdev, MME_PLL, true);
+
+ return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static DEVICE_ATTR_RW(clk_max_freq_mhz);
+static DEVICE_ATTR_RO(clk_cur_freq_mhz);
+
+static struct attribute *gaudi_dev_attrs[] = {
+ &dev_attr_clk_max_freq_mhz.attr,
+ &dev_attr_clk_cur_freq_mhz.attr,
+ NULL,
+};
+
+void gaudi_add_device_attr(struct hl_device *hdev,
+ struct attribute_group *dev_attr_grp)
+{
+ dev_attr_grp->attrs = gaudi_dev_attrs;
+}