From 511d57dc71a22514e106f79a878e788cb22f73e3 Mon Sep 17 00:00:00 2001
From: Corey Minyard <cminyard@mvista.com>
Date: Wed, 30 Aug 2017 08:04:24 -0500
Subject: [PATCH] ipmi: Get the device id through a function
Git-commit: 511d57dc71a22514e106f79a878e788cb22f73e3
Patch-mainline: v4.15-rc1
References: FATE#326156
This makes getting the device id consistent, and make it possible
to add a function to fetch it dynamically later.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/char/ipmi/ipmi_msghandler.c | 155 +++++++++++++++++++++-------
drivers/char/ipmi/ipmi_watchdog.c | 11 +-
include/linux/ipmi.h | 6 +-
3 files changed, 130 insertions(+), 42 deletions(-)
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index d92767225b15..89b72425f9ce 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -272,6 +272,9 @@ struct bmc_device {
};
#define to_bmc_device(x) container_of((x), struct bmc_device, pdev.dev)
+static int bmc_get_device_id(ipmi_smi_t intf, struct bmc_device *bmc,
+ struct ipmi_device_id *id);
+
/*
* Various statistics for IPMI, these index stats[] in the ipmi_smi
* structure.
@@ -396,10 +399,6 @@ struct ipmi_smi {
*/
struct list_head users;
- /* Information to supply to users. */
- unsigned char ipmi_version_major;
- unsigned char ipmi_version_minor;
-
/* Used for wake ups at startup. */
wait_queue_head_t waitq;
@@ -1194,12 +1193,21 @@ int ipmi_destroy_user(ipmi_user_t user)
}
EXPORT_SYMBOL(ipmi_destroy_user);
-void ipmi_get_version(ipmi_user_t user,
- unsigned char *major,
- unsigned char *minor)
+int ipmi_get_version(ipmi_user_t user,
+ unsigned char *major,
+ unsigned char *minor)
{
- *major = user->intf->ipmi_version_major;
- *minor = user->intf->ipmi_version_minor;
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(user->intf, NULL, &id);
+ if (rv)
+ return rv;
+
+ *major = ipmi_version_major(&id);
+ *minor = ipmi_version_minor(&id);
+
+ return 0;
}
EXPORT_SYMBOL(ipmi_get_version);
@@ -2072,6 +2080,16 @@ int ipmi_request_supply_msgs(ipmi_user_t user,
}
EXPORT_SYMBOL(ipmi_request_supply_msgs);
+static int bmc_get_device_id(ipmi_smi_t intf, struct bmc_device *bmc,
+ struct ipmi_device_id *id)
+{
+ if (!bmc)
+ bmc = intf->bmc;
+
+ *id = bmc->id;
+ return 0;
+}
+
#ifdef CONFIG_PROC_FS
static int smi_ipmb_proc_show(struct seq_file *m, void *v)
{
@@ -2101,10 +2119,16 @@ static const struct file_operations smi_ipmb_proc_ops = {
static int smi_version_proc_show(struct seq_file *m, void *v)
{
ipmi_smi_t intf = m->private;
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(intf, NULL, &id);
+ if (rv)
+ return rv;
seq_printf(m, "%u.%u\n",
- ipmi_version_major(&intf->bmc->id),
- ipmi_version_minor(&intf->bmc->id));
+ ipmi_version_major(&id),
+ ipmi_version_minor(&id));
return 0;
}
@@ -2287,8 +2311,14 @@ static ssize_t device_id_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
- return snprintf(buf, 10, "%u\n", bmc->id.device_id);
+ return snprintf(buf, 10, "%u\n", id.device_id);
}
static DEVICE_ATTR(device_id, S_IRUGO, device_id_show, NULL);
@@ -2297,9 +2327,14 @@ static ssize_t provides_device_sdrs_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
- return snprintf(buf, 10, "%u\n",
- (bmc->id.device_revision & 0x80) >> 7);
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
+
+ return snprintf(buf, 10, "%u\n", (id.device_revision & 0x80) >> 7);
}
static DEVICE_ATTR(provides_device_sdrs, S_IRUGO, provides_device_sdrs_show,
NULL);
@@ -2308,9 +2343,14 @@ static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
- return snprintf(buf, 20, "%u\n",
- bmc->id.device_revision & 0x0F);
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
+
+ return snprintf(buf, 20, "%u\n", id.device_revision & 0x0F);
}
static DEVICE_ATTR(revision, S_IRUGO, revision_show, NULL);
@@ -2319,9 +2359,15 @@ static ssize_t firmware_revision_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
- return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1,
- bmc->id.firmware_revision_2);
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
+
+ return snprintf(buf, 20, "%u.%x\n", id.firmware_revision_1,
+ id.firmware_revision_2);
}
static DEVICE_ATTR(firmware_revision, S_IRUGO, firmware_revision_show, NULL);
@@ -2330,10 +2376,16 @@ static ssize_t ipmi_version_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
return snprintf(buf, 20, "%u.%u\n",
- ipmi_version_major(&bmc->id),
- ipmi_version_minor(&bmc->id));
+ ipmi_version_major(&id),
+ ipmi_version_minor(&id));
}
static DEVICE_ATTR(ipmi_version, S_IRUGO, ipmi_version_show, NULL);
@@ -2342,9 +2394,14 @@ static ssize_t add_dev_support_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
- return snprintf(buf, 10, "0x%02x\n",
- bmc->id.additional_device_support);
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
+
+ return snprintf(buf, 10, "0x%02x\n", id.additional_device_support);
}
static DEVICE_ATTR(additional_device_support, S_IRUGO, add_dev_support_show,
NULL);
@@ -2354,8 +2411,14 @@ static ssize_t manufacturer_id_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
- return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id);
+ return snprintf(buf, 20, "0x%6.6x\n", id.manufacturer_id);
}
static DEVICE_ATTR(manufacturer_id, S_IRUGO, manufacturer_id_show, NULL);
@@ -2364,8 +2427,14 @@ static ssize_t product_id_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
- return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id);
+ return snprintf(buf, 10, "0x%4.4x\n", id.product_id);
}
static DEVICE_ATTR(product_id, S_IRUGO, product_id_show, NULL);
@@ -2374,12 +2443,18 @@ static ssize_t aux_firmware_rev_show(struct device *dev,
char *buf)
{
struct bmc_device *bmc = to_bmc_device(dev);
+ struct ipmi_device_id id;
+ int rv;
+
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ if (rv)
+ return rv;
return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n",
- bmc->id.aux_firmware_revision[3],
- bmc->id.aux_firmware_revision[2],
- bmc->id.aux_firmware_revision[1],
- bmc->id.aux_firmware_revision[0]);
+ id.aux_firmware_revision[3],
+ id.aux_firmware_revision[2],
+ id.aux_firmware_revision[1],
+ id.aux_firmware_revision[0]);
}
static DEVICE_ATTR(aux_firmware_revision, S_IRUGO, aux_firmware_rev_show, NULL);
@@ -2417,9 +2492,13 @@ static umode_t bmc_dev_attr_is_visible(struct kobject *kobj,
struct device *dev = kobj_to_dev(kobj);
struct bmc_device *bmc = to_bmc_device(dev);
umode_t mode = attr->mode;
+ struct ipmi_device_id id;
+ int rv;
- if (attr == &dev_attr_aux_firmware_revision.attr)
- return bmc->id.aux_firmware_revision_set ? mode : 0;
+ if (attr == &dev_attr_aux_firmware_revision.attr) {
+ rv = bmc_get_device_id(NULL, bmc, &id);
+ return (!rv && id.aux_firmware_revision_set) ? mode : 0;
+ }
if (attr == &dev_attr_guid.attr)
return bmc->guid_set ? mode : 0;
return mode;
@@ -2884,6 +2963,7 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
ipmi_smi_t intf;
ipmi_smi_t tintf;
struct list_head *link;
+ struct ipmi_device_id id;
/*
* Make sure the driver is actually initialized, this handles
@@ -2905,9 +2985,6 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
if (!intf)
return -ENOMEM;
- intf->ipmi_version_major = ipmi_version_major(device_id);
- intf->ipmi_version_minor = ipmi_version_minor(device_id);
-
intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL);
if (!intf->bmc) {
kfree(intf);
@@ -2982,13 +3059,19 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
get_guid(intf);
+ rv = bmc_get_device_id(intf, NULL, &id);
+ if (rv) {
+ dev_err(si_dev, "Unable to get the device id: %d\n", rv);
+ goto out;
+ }
+
rv = ipmi_bmc_register(intf, i);
if (rv)
goto out;
- if ((intf->ipmi_version_major > 1)
- || ((intf->ipmi_version_major == 1)
- && (intf->ipmi_version_minor >= 5))) {
+ if (ipmi_version_major(&id) > 1
+ || (ipmi_version_major(&id) == 1
+ && ipmi_version_minor(&id) >= 5)) {
/*
* Start scanning the channels to see what is
* available.
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 3d832d0362a4..76b270678b50 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -1009,9 +1009,14 @@ static void ipmi_register_watchdog(int ipmi_intf)
goto out;
}
- ipmi_get_version(watchdog_user,
- &ipmi_version_major,
- &ipmi_version_minor);
+ rv = ipmi_get_version(watchdog_user,
+ &ipmi_version_major,
+ &ipmi_version_minor);
+ if (rv) {
+ pr_warn(PFX "Unable to get IPMI version, assuming 1.0\n");
+ ipmi_version_major = 1;
+ ipmi_version_minor = 0;
+ }
rv = misc_register(&ipmi_wdog_miscdev);
if (rv < 0) {
diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h
index f1045b2c6a00..80fc3f798984 100644
--- a/include/linux/ipmi.h
+++ b/include/linux/ipmi.h
@@ -113,9 +113,9 @@ int ipmi_create_user(unsigned int if_num,
int ipmi_destroy_user(ipmi_user_t user);
/* Get the IPMI version of the BMC we are talking to. */
-void ipmi_get_version(ipmi_user_t user,
- unsigned char *major,
- unsigned char *minor);
+int ipmi_get_version(ipmi_user_t user,
+ unsigned char *major,
+ unsigned char *minor);
/* Set and get the slave address and LUN that we will use for our
source messages. Note that this affects the interface, not just
--
2.19.2