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path: root/drivers/char/ipmi/ipmi_ssif.c
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Diffstat (limited to 'drivers/char/ipmi/ipmi_ssif.c')
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c122
1 files changed, 87 insertions, 35 deletions
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 0aea3bcb6158..f929e72bdac8 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -53,6 +53,7 @@
#include <linux/acpi.h>
#include <linux/ctype.h>
#include <linux/time64.h>
+#include "ipmi_si_sm.h"
#include "ipmi_dmi.h"
#define PFX "ipmi_ssif: "
@@ -267,9 +268,6 @@ struct ssif_info {
unsigned char *i2c_data;
unsigned int i2c_size;
- /* From the device id response. */
- struct ipmi_device_id device_id;
-
struct timer_list retry_timer;
int retries_left;
@@ -553,9 +551,9 @@ static void start_get(struct ssif_info *ssif_info)
}
}
-static void retry_timeout(unsigned long data)
+static void retry_timeout(struct timer_list *t)
{
- struct ssif_info *ssif_info = (void *) data;
+ struct ssif_info *ssif_info = from_timer(ssif_info, t, retry_timer);
unsigned long oflags, *flags;
bool waiting;
@@ -1176,6 +1174,61 @@ MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the default scan of
static DEFINE_MUTEX(ssif_infos_mutex);
static LIST_HEAD(ssif_infos);
+#define IPMI_SSIF_ATTR(name) \
+static ssize_t ipmi_##name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct ssif_info *ssif_info = dev_get_drvdata(dev); \
+ \
+ return snprintf(buf, 10, "%u\n", ssif_get_stat(ssif_info, name));\
+} \
+static DEVICE_ATTR(name, S_IRUGO, ipmi_##name##_show, NULL)
+
+static ssize_t ipmi_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, 10, "ssif\n");
+}
+static DEVICE_ATTR(type, S_IRUGO, ipmi_type_show, NULL);
+
+IPMI_SSIF_ATTR(sent_messages);
+IPMI_SSIF_ATTR(sent_messages_parts);
+IPMI_SSIF_ATTR(send_retries);
+IPMI_SSIF_ATTR(send_errors);
+IPMI_SSIF_ATTR(received_messages);
+IPMI_SSIF_ATTR(received_message_parts);
+IPMI_SSIF_ATTR(receive_retries);
+IPMI_SSIF_ATTR(receive_errors);
+IPMI_SSIF_ATTR(flag_fetches);
+IPMI_SSIF_ATTR(hosed);
+IPMI_SSIF_ATTR(events);
+IPMI_SSIF_ATTR(watchdog_pretimeouts);
+IPMI_SSIF_ATTR(alerts);
+
+static struct attribute *ipmi_ssif_dev_attrs[] = {
+ &dev_attr_type.attr,
+ &dev_attr_sent_messages.attr,
+ &dev_attr_sent_messages_parts.attr,
+ &dev_attr_send_retries.attr,
+ &dev_attr_send_errors.attr,
+ &dev_attr_received_messages.attr,
+ &dev_attr_received_message_parts.attr,
+ &dev_attr_receive_retries.attr,
+ &dev_attr_receive_errors.attr,
+ &dev_attr_flag_fetches.attr,
+ &dev_attr_hosed.attr,
+ &dev_attr_events.attr,
+ &dev_attr_watchdog_pretimeouts.attr,
+ &dev_attr_alerts.attr,
+ NULL
+};
+
+static const struct attribute_group ipmi_ssif_dev_attr_group = {
+ .attrs = ipmi_ssif_dev_attrs,
+};
+
static int ssif_remove(struct i2c_client *client)
{
struct ssif_info *ssif_info = i2c_get_clientdata(client);
@@ -1196,6 +1249,9 @@ static int ssif_remove(struct i2c_client *client)
}
ssif_info->intf = NULL;
+ device_remove_group(&ssif_info->client->dev, &ipmi_ssif_dev_attr_group);
+ dev_set_drvdata(&ssif_info->client->dev, NULL);
+
/* make sure the driver is not looking for flags any more. */
while (ssif_info->ssif_state != SSIF_NORMAL)
schedule_timeout(1);
@@ -1289,6 +1345,7 @@ static int ssif_detect(struct i2c_client *client, struct i2c_board_info *info)
return rv;
}
+#ifdef CONFIG_IPMI_PROC_INTERFACE
static int smi_type_proc_show(struct seq_file *m, void *v)
{
seq_puts(m, "ssif\n");
@@ -1352,6 +1409,7 @@ static const struct file_operations smi_stats_proc_ops = {
.llseek = seq_lseek,
.release = single_release,
};
+#endif
static int strcmp_nospace(char *s1, char *s2)
{
@@ -1425,7 +1483,7 @@ static int find_slave_address(struct i2c_client *client, int slave_addr)
#ifdef CONFIG_IPMI_DMI_DECODE
if (!slave_addr)
slave_addr = ipmi_dmi_get_slave_addr(
- IPMI_DMI_TYPE_SSIF,
+ SI_TYPE_INVALID,
i2c_adapter_id(client->adapter),
client->addr);
#endif
@@ -1481,20 +1539,6 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
ipmi_addr_src_to_str(ssif_info->addr_source),
client->addr, client->adapter->name, slave_addr);
- /*
- * Do a Get Device ID command, since it comes back with some
- * useful info.
- */
- msg[0] = IPMI_NETFN_APP_REQUEST << 2;
- msg[1] = IPMI_GET_DEVICE_ID_CMD;
- rv = do_cmd(client, 2, msg, &len, resp);
- if (rv)
- goto out;
-
- rv = ipmi_demangle_device_id(resp, len, &ssif_info->device_id);
- if (rv)
- goto out;
-
ssif_info->client = client;
i2c_set_clientdata(client, ssif_info);
@@ -1647,8 +1691,7 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
spin_lock_init(&ssif_info->lock);
ssif_info->ssif_state = SSIF_NORMAL;
- setup_timer(&ssif_info->retry_timer, retry_timeout,
- (unsigned long)ssif_info);
+ timer_setup(&ssif_info->retry_timer, retry_timeout, 0);
for (i = 0; i < SSIF_NUM_STATS; i++)
atomic_set(&ssif_info->stats[i], 0);
@@ -1682,16 +1725,26 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
}
+ dev_set_drvdata(&ssif_info->client->dev, ssif_info);
+ rv = device_add_group(&ssif_info->client->dev,
+ &ipmi_ssif_dev_attr_group);
+ if (rv) {
+ dev_err(&ssif_info->client->dev,
+ "Unable to add device attributes: error %d\n",
+ rv);
+ goto out;
+ }
+
rv = ipmi_register_smi(&ssif_info->handlers,
ssif_info,
- &ssif_info->device_id,
&ssif_info->client->dev,
slave_addr);
if (rv) {
pr_err(PFX "Unable to register device: error %d\n", rv);
- goto out;
+ goto out_remove_attr;
}
+#ifdef CONFIG_IPMI_PROC_INTERFACE
rv = ipmi_smi_add_proc_entry(ssif_info->intf, "type",
&smi_type_proc_ops,
ssif_info);
@@ -1707,6 +1760,7 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
pr_err(PFX "Unable to create proc entry: %d\n", rv);
goto out_err_unreg;
}
+#endif
out:
if (rv) {
@@ -1725,8 +1779,14 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
kfree(resp);
return rv;
- out_err_unreg:
+#ifdef CONFIG_IPMI_PROC_INTERFACE
+out_err_unreg:
ipmi_unregister_smi(ssif_info->intf);
+#endif
+
+out_remove_attr:
+ device_remove_group(&ssif_info->client->dev, &ipmi_ssif_dev_attr_group);
+ dev_set_drvdata(&ssif_info->client->dev, NULL);
goto out;
}
@@ -1953,20 +2013,13 @@ static void spmi_find_bmc(void) { }
#ifdef CONFIG_DMI
static int dmi_ipmi_probe(struct platform_device *pdev)
{
- u8 type, slave_addr = 0;
+ u8 slave_addr = 0;
u16 i2c_addr;
int rv;
if (!ssif_trydmi)
return -ENODEV;
- rv = device_property_read_u8(&pdev->dev, "ipmi-type", &type);
- if (rv)
- return -ENODEV;
-
- if (type != IPMI_DMI_TYPE_SSIF)
- return -ENODEV;
-
rv = device_property_read_u16(&pdev->dev, "i2c-addr", &i2c_addr);
if (rv) {
dev_warn(&pdev->dev, PFX "No i2c-addr property\n");
@@ -2018,8 +2071,7 @@ static int ssif_platform_remove(struct platform_device *dev)
return 0;
mutex_lock(&ssif_infos_mutex);
- if (addr_info->client)
- i2c_unregister_device(addr_info->client);
+ i2c_unregister_device(addr_info->client);
list_del(&addr_info->link);
kfree(addr_info);
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