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path: root/drivers/fpga/dfl-afu-main.c
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Diffstat (limited to 'drivers/fpga/dfl-afu-main.c')
-rw-r--r--drivers/fpga/dfl-afu-main.c165
1 files changed, 157 insertions, 8 deletions
diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
index 02baa6a227c0..e50c45ed40ac 100644
--- a/drivers/fpga/dfl-afu-main.c
+++ b/drivers/fpga/dfl-afu-main.c
@@ -141,10 +141,148 @@ id_show(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR_RO(id);
-static const struct attribute *port_hdr_attrs[] = {
+static ssize_t
+ltr_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ u64 v;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ v = readq(base + PORT_HDR_CTRL);
+ mutex_unlock(&pdata->lock);
+
+ return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_CTRL_LATENCY, v));
+}
+
+static ssize_t
+ltr_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ bool ltr;
+ u64 v;
+
+ if (kstrtobool(buf, &ltr))
+ return -EINVAL;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ v = readq(base + PORT_HDR_CTRL);
+ v &= ~PORT_CTRL_LATENCY;
+ v |= FIELD_PREP(PORT_CTRL_LATENCY, ltr ? 1 : 0);
+ writeq(v, base + PORT_HDR_CTRL);
+ mutex_unlock(&pdata->lock);
+
+ return count;
+}
+static DEVICE_ATTR_RW(ltr);
+
+static ssize_t
+ap1_event_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ u64 v;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ v = readq(base + PORT_HDR_STS);
+ mutex_unlock(&pdata->lock);
+
+ return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_STS_AP1_EVT, v));
+}
+
+static ssize_t
+ap1_event_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ bool clear;
+
+ if (kstrtobool(buf, &clear) || !clear)
+ return -EINVAL;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ writeq(PORT_STS_AP1_EVT, base + PORT_HDR_STS);
+ mutex_unlock(&pdata->lock);
+
+ return count;
+}
+static DEVICE_ATTR_RW(ap1_event);
+
+static ssize_t
+ap2_event_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ u64 v;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ v = readq(base + PORT_HDR_STS);
+ mutex_unlock(&pdata->lock);
+
+ return sprintf(buf, "%x\n", (u8)FIELD_GET(PORT_STS_AP2_EVT, v));
+}
+
+static ssize_t
+ap2_event_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ bool clear;
+
+ if (kstrtobool(buf, &clear) || !clear)
+ return -EINVAL;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ writeq(PORT_STS_AP2_EVT, base + PORT_HDR_STS);
+ mutex_unlock(&pdata->lock);
+
+ return count;
+}
+static DEVICE_ATTR_RW(ap2_event);
+
+static ssize_t
+power_state_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
+ void __iomem *base;
+ u64 v;
+
+ base = dfl_get_feature_ioaddr_by_id(dev, PORT_FEATURE_ID_HEADER);
+
+ mutex_lock(&pdata->lock);
+ v = readq(base + PORT_HDR_STS);
+ mutex_unlock(&pdata->lock);
+
+ return sprintf(buf, "0x%x\n", (u8)FIELD_GET(PORT_STS_PWR_STATE, v));
+}
+static DEVICE_ATTR_RO(power_state);
+
+static struct attribute *port_hdr_attrs[] = {
&dev_attr_id.attr,
+ &dev_attr_ltr.attr,
+ &dev_attr_ap1_event.attr,
+ &dev_attr_ap2_event.attr,
+ &dev_attr_power_state.attr,
NULL,
};
+ATTRIBUTE_GROUPS(port_hdr);
static int port_hdr_init(struct platform_device *pdev,
struct dfl_feature *feature)
@@ -153,7 +291,7 @@ static int port_hdr_init(struct platform_device *pdev,
port_reset(pdev);
- return sysfs_create_files(&pdev->dev.kobj, port_hdr_attrs);
+ return device_add_groups(&pdev->dev, port_hdr_groups);
}
static void port_hdr_uinit(struct platform_device *pdev,
@@ -161,7 +299,7 @@ static void port_hdr_uinit(struct platform_device *pdev,
{
dev_dbg(&pdev->dev, "PORT HDR UInit.\n");
- sysfs_remove_files(&pdev->dev.kobj, port_hdr_attrs);
+ device_remove_groups(&pdev->dev, port_hdr_groups);
}
static long
@@ -185,6 +323,11 @@ port_hdr_ioctl(struct platform_device *pdev, struct dfl_feature *feature,
return ret;
}
+static const struct dfl_feature_id port_hdr_id_table[] = {
+ {.id = PORT_FEATURE_ID_HEADER,},
+ {0,}
+};
+
static const struct dfl_feature_ops port_hdr_ops = {
.init = port_hdr_init,
.uinit = port_hdr_uinit,
@@ -214,10 +357,11 @@ afu_id_show(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR_RO(afu_id);
-static const struct attribute *port_afu_attrs[] = {
+static struct attribute *port_afu_attrs[] = {
&dev_attr_afu_id.attr,
NULL
};
+ATTRIBUTE_GROUPS(port_afu);
static int port_afu_init(struct platform_device *pdev,
struct dfl_feature *feature)
@@ -234,7 +378,7 @@ static int port_afu_init(struct platform_device *pdev,
if (ret)
return ret;
- return sysfs_create_files(&pdev->dev.kobj, port_afu_attrs);
+ return device_add_groups(&pdev->dev, port_afu_groups);
}
static void port_afu_uinit(struct platform_device *pdev,
@@ -242,9 +386,14 @@ static void port_afu_uinit(struct platform_device *pdev,
{
dev_dbg(&pdev->dev, "PORT AFU UInit.\n");
- sysfs_remove_files(&pdev->dev.kobj, port_afu_attrs);
+ device_remove_groups(&pdev->dev, port_afu_groups);
}
+static const struct dfl_feature_id port_afu_id_table[] = {
+ {.id = PORT_FEATURE_ID_AFU,},
+ {0,}
+};
+
static const struct dfl_feature_ops port_afu_ops = {
.init = port_afu_init,
.uinit = port_afu_uinit,
@@ -252,11 +401,11 @@ static const struct dfl_feature_ops port_afu_ops = {
static struct dfl_feature_driver port_feature_drvs[] = {
{
- .id = PORT_FEATURE_ID_HEADER,
+ .id_table = port_hdr_id_table,
.ops = &port_hdr_ops,
},
{
- .id = PORT_FEATURE_ID_AFU,
+ .id_table = port_afu_id_table,
.ops = &port_afu_ops,
},
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.