platform/x86/intel/pmt: refactor base parameter

To support an upcoming crashlog change, use the parent of
struct intel_pmt_entry, struct crashlog_entry, as a main parameter.

Using struct crashlog_entry will allow for a more flexible interface
to control the crashlog feature.

- Refactor to use struct crashlog_entry in place of
  struct intel_pmt_entry
- Rename variables from "entry" to "crashlog"

Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Michael J. Ruhl <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ilpo Järvinen <[email protected]>

Author: mjruhl

drivers/platform/x86/intel/pmt/crashlog.c

@@ -66,8 +66,9 @@ struct pmt_crashlog_priv {
  */
 
 /* Read, modify, write the control register, setting or clearing @bit based on @set */
-static void pmt_crashlog_rmw(struct intel_pmt_entry *entry, u32 bit, bool set)
+static void pmt_crashlog_rmw(struct crashlog_entry *crashlog, u32 bit, bool set)
 {
+	struct intel_pmt_entry *entry = &crashlog->entry;
 	u32 reg = readl(entry->disc_table + CONTROL_OFFSET);
 
 	reg &= ~CRASHLOG_FLAG_TRIGGER_MASK;
@@ -81,23 +82,24 @@ static void pmt_crashlog_rmw(struct intel_pmt_entry *entry, u32 bit, bool set)
 }
 
 /* Read the status register and see if the specified @bit is set */
-static bool pmt_crashlog_rc(struct intel_pmt_entry *entry, u32 bit)
+static bool pmt_crashlog_rc(struct crashlog_entry *crashlog, u32 bit)
 {
+	struct intel_pmt_entry *entry = &crashlog->entry;
 	u32 reg = readl(entry->disc_table + CONTROL_OFFSET);
 
 	return !!(reg & bit);
 }
 
-static bool pmt_crashlog_complete(struct intel_pmt_entry *entry)
+static bool pmt_crashlog_complete(struct crashlog_entry *crashlog)
 {
 	/* return current value of the crashlog complete flag */
-	return pmt_crashlog_rc(entry, CRASHLOG_FLAG_TRIGGER_COMPLETE);
+	return pmt_crashlog_rc(crashlog, CRASHLOG_FLAG_TRIGGER_COMPLETE);
 }
 
-static bool pmt_crashlog_disabled(struct intel_pmt_entry *entry)
+static bool pmt_crashlog_disabled(struct crashlog_entry *crashlog)
 {
 	/* return current value of the crashlog disabled flag */
-	return pmt_crashlog_rc(entry, CRASHLOG_FLAG_DISABLE);
+	return pmt_crashlog_rc(crashlog, CRASHLOG_FLAG_DISABLE);
 }
 
 static bool pmt_crashlog_supported(struct intel_pmt_entry *entry)
@@ -115,20 +117,20 @@ static bool pmt_crashlog_supported(struct intel_pmt_entry *entry)
 	return crash_type == CRASH_TYPE_OOBMSM && version == 0;
 }
 
-static void pmt_crashlog_set_disable(struct intel_pmt_entry *entry,
+static void pmt_crashlog_set_disable(struct crashlog_entry *crashlog,
 				     bool disable)
 {
-	pmt_crashlog_rmw(entry, CRASHLOG_FLAG_DISABLE, disable);
+	pmt_crashlog_rmw(crashlog, CRASHLOG_FLAG_DISABLE, disable);
 }
 
-static void pmt_crashlog_set_clear(struct intel_pmt_entry *entry)
+static void pmt_crashlog_set_clear(struct crashlog_entry *crashlog)
 {
-	pmt_crashlog_rmw(entry, CRASHLOG_FLAG_TRIGGER_CLEAR, true);
+	pmt_crashlog_rmw(crashlog, CRASHLOG_FLAG_TRIGGER_CLEAR, true);
 }
 
-static void pmt_crashlog_set_execute(struct intel_pmt_entry *entry)
+static void pmt_crashlog_set_execute(struct crashlog_entry *crashlog)
 {
-	pmt_crashlog_rmw(entry, CRASHLOG_FLAG_TRIGGER_EXECUTE, true);
+	pmt_crashlog_rmw(crashlog, CRASHLOG_FLAG_TRIGGER_EXECUTE, true);
 }
 
 /*
@@ -137,8 +139,8 @@ static void pmt_crashlog_set_execute(struct intel_pmt_entry *entry)
 static ssize_t
 enable_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
-	struct intel_pmt_entry *entry = dev_get_drvdata(dev);
-	bool enabled = !pmt_crashlog_disabled(entry);
+	struct crashlog_entry *crashlog = dev_get_drvdata(dev);
+	bool enabled = !pmt_crashlog_disabled(crashlog);
 
 	return sprintf(buf, "%d\n", enabled);
 }
@@ -147,19 +149,19 @@ static ssize_t
 enable_store(struct device *dev, struct device_attribute *attr,
 	     const char *buf, size_t count)
 {
-	struct crashlog_entry *entry;
+	struct crashlog_entry *crashlog;
 	bool enabled;
 	int result;
 
-	entry = dev_get_drvdata(dev);
+	crashlog = dev_get_drvdata(dev);
 
 	result = kstrtobool(buf, &enabled);
 	if (result)
 		return result;
 
-	guard(mutex)(&entry->control_mutex);
+	guard(mutex)(&crashlog->control_mutex);
 
-	pmt_crashlog_set_disable(&entry->entry, !enabled);
+	pmt_crashlog_set_disable(crashlog, !enabled);
 
 	return count;
 }
@@ -168,11 +170,11 @@ static DEVICE_ATTR_RW(enable);
 static ssize_t
 trigger_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
-	struct intel_pmt_entry *entry;
+	struct crashlog_entry *crashlog;
 	bool trigger;
 
-	entry = dev_get_drvdata(dev);
-	trigger = pmt_crashlog_complete(entry);
+	crashlog = dev_get_drvdata(dev);
+	trigger = pmt_crashlog_complete(crashlog);
 
 	return sprintf(buf, "%d\n", trigger);
 }
@@ -181,32 +183,32 @@ static ssize_t
 trigger_store(struct device *dev, struct device_attribute *attr,
 	      const char *buf, size_t count)
 {
-	struct crashlog_entry *entry;
+	struct crashlog_entry *crashlog;
 	bool trigger;
 	int result;
 
-	entry = dev_get_drvdata(dev);
+	crashlog = dev_get_drvdata(dev);
 
 	result = kstrtobool(buf, &trigger);
 	if (result)
 		return result;
 
-	guard(mutex)(&entry->control_mutex);
+	guard(mutex)(&crashlog->control_mutex);
 
 	/* if device is currently disabled, return busy */
-	if (pmt_crashlog_disabled(&entry->entry))
+	if (pmt_crashlog_disabled(crashlog))
 		return -EBUSY;
 
 	if (!trigger) {
-		pmt_crashlog_set_clear(&entry->entry);
+		pmt_crashlog_set_clear(crashlog);
 		return count;
 	}
 
 	/* we cannot trigger a new crash if one is still pending */
-	if (pmt_crashlog_complete(&entry->entry))
+	if (pmt_crashlog_complete(crashlog))
 		return -EEXIST;
 
-	pmt_crashlog_set_execute(&entry->entry);
+	pmt_crashlog_set_execute(crashlog);
 
 	return count;
 }