};
#endif
+struct bmc_device
+{
+ struct platform_device *dev;
+ struct ipmi_device_id id;
+ unsigned char guid[16];
+ int guid_set;
+
+ struct kref refcount;
+
+ /* bmc device attributes */
+ struct device_attribute device_id_attr;
+ struct device_attribute provides_dev_sdrs_attr;
+ struct device_attribute revision_attr;
+ struct device_attribute firmware_rev_attr;
+ struct device_attribute version_attr;
+ struct device_attribute add_dev_support_attr;
+ struct device_attribute manufacturer_id_attr;
+ struct device_attribute product_id_attr;
+ struct device_attribute guid_attr;
+ struct device_attribute aux_firmware_rev_attr;
+};
+
#define IPMI_IPMB_NUM_SEQ 64
#define IPMI_MAX_CHANNELS 16
struct ipmi_smi
/* Used for wake ups at startup. */
wait_queue_head_t waitq;
- /* The IPMI version of the BMC on the other end. */
- unsigned char version_major;
- unsigned char version_minor;
+ struct bmc_device *bmc;
+ char *my_dev_name;
/* This is the lower-layer's sender routine. */
struct ipmi_smi_handlers *handlers;
struct ipmi_proc_entry *proc_entries;
#endif
+ /* Driver-model device for the system interface. */
+ struct device *si_dev;
+
/* A table of sequence numbers for this interface. We use the
sequence numbers for IPMB messages that go out of the
interface to match them up with their responses. A routine
/* Events that were received with the proper format. */
unsigned int events;
};
+#define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev)
/* Used to mark an interface entry that cannot be used but is not a
* free entry, either, primarily used at creation and deletion time so
#define IPMI_INVALID_INTERFACE(i) (((i) == NULL) \
|| (i == IPMI_INVALID_INTERFACE_ENTRY))
+/**
+ * The driver model view of the IPMI messaging driver.
+ */
+static struct device_driver ipmidriver = {
+ .name = "ipmi",
+ .bus = &platform_bus_type
+};
+static DEFINE_MUTEX(ipmidriver_mutex);
+
#define MAX_IPMI_INTERFACES 4
static ipmi_smi_t ipmi_interfaces[MAX_IPMI_INTERFACES];
if (IPMI_INVALID_INTERFACE(intf))
continue;
spin_unlock_irqrestore(&interfaces_lock, flags);
- watcher->new_smi(i);
+ watcher->new_smi(i, intf->si_dev);
spin_lock_irqsave(&interfaces_lock, flags);
}
spin_unlock_irqrestore(&interfaces_lock, flags);
}
static void
-call_smi_watchers(int i)
+call_smi_watchers(int i, struct device *dev)
{
struct ipmi_smi_watcher *w;
down_read(&smi_watchers_sem);
list_for_each_entry(w, &smi_watchers, link) {
if (try_module_get(w->owner)) {
- w->new_smi(i);
+ w->new_smi(i, dev);
module_put(w->owner);
}
}
unsigned char *major,
unsigned char *minor)
{
- *major = user->intf->version_major;
- *minor = user->intf->version_minor;
+ *major = ipmi_version_major(&user->intf->bmc->id);
+ *minor = ipmi_version_minor(&user->intf->bmc->id);
}
int ipmi_set_my_address(ipmi_user_t user,
ipmi_smi_t intf = data;
return sprintf(out, "%d.%d\n",
- intf->version_major, intf->version_minor);
+ ipmi_version_major(&intf->bmc->id),
+ ipmi_version_minor(&intf->bmc->id));
}
static int stat_file_read_proc(char *page, char **start, off_t off,
#endif /* CONFIG_PROC_FS */
}
+static int __find_bmc_guid(struct device *dev, void *data)
+{
+ unsigned char *id = data;
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+ return memcmp(bmc->guid, id, 16) == 0;
+}
+
+static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv,
+ unsigned char *guid)
+{
+ struct device *dev;
+
+ dev = driver_find_device(drv, NULL, guid, __find_bmc_guid);
+ if (dev)
+ return dev_get_drvdata(dev);
+ else
+ return NULL;
+}
+
+struct prod_dev_id {
+ unsigned int product_id;
+ unsigned char device_id;
+};
+
+static int __find_bmc_prod_dev_id(struct device *dev, void *data)
+{
+ struct prod_dev_id *id = data;
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return (bmc->id.product_id == id->product_id
+ && bmc->id.product_id == id->product_id
+ && bmc->id.device_id == id->device_id);
+}
+
+static struct bmc_device *ipmi_find_bmc_prod_dev_id(
+ struct device_driver *drv,
+ unsigned char product_id, unsigned char device_id)
+{
+ struct prod_dev_id id = {
+ .product_id = product_id,
+ .device_id = device_id,
+ };
+ struct device *dev;
+
+ dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id);
+ if (dev)
+ return dev_get_drvdata(dev);
+ else
+ return NULL;
+}
+
+static ssize_t device_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "%u\n", bmc->id.device_id);
+}
+
+static ssize_t provides_dev_sdrs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "%u\n",
+ bmc->id.device_revision && 0x80 >> 7);
+}
+
+static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u\n",
+ bmc->id.device_revision && 0x0F);
+}
+
+static ssize_t firmware_rev_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1,
+ bmc->id.firmware_revision_2);
+}
+
+static ssize_t ipmi_version_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u.%u\n",
+ ipmi_version_major(&bmc->id),
+ ipmi_version_minor(&bmc->id));
+}
+
+static ssize_t add_dev_support_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "0x%02x\n",
+ bmc->id.additional_device_support);
+}
+
+static ssize_t manufacturer_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id);
+}
+
+static ssize_t product_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id);
+}
+
+static ssize_t aux_firmware_rev_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ 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]);
+}
+
+static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 100, "%Lx%Lx\n",
+ (long long) bmc->guid[0],
+ (long long) bmc->guid[8]);
+}
+
+static void
+cleanup_bmc_device(struct kref *ref)
+{
+ struct bmc_device *bmc;
+
+ bmc = container_of(ref, struct bmc_device, refcount);
+
+ device_remove_file(&bmc->dev->dev,
+ &bmc->device_id_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->provides_dev_sdrs_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->revision_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->firmware_rev_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->version_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->add_dev_support_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->manufacturer_id_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->product_id_attr);
+ if (bmc->id.aux_firmware_revision_set)
+ device_remove_file(&bmc->dev->dev,
+ &bmc->aux_firmware_rev_attr);
+ if (bmc->guid_set)
+ device_remove_file(&bmc->dev->dev,
+ &bmc->guid_attr);
+ platform_device_unregister(bmc->dev);
+ kfree(bmc);
+}
+
+static void ipmi_bmc_unregister(ipmi_smi_t intf)
+{
+ struct bmc_device *bmc = intf->bmc;
+
+ sysfs_remove_link(&intf->si_dev->kobj, "bmc");
+ if (intf->my_dev_name) {
+ sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name);
+ kfree(intf->my_dev_name);
+ intf->my_dev_name = NULL;
+ }
+
+ mutex_lock(&ipmidriver_mutex);
+ kref_put(&bmc->refcount, cleanup_bmc_device);
+ mutex_unlock(&ipmidriver_mutex);
+}
+
+static int ipmi_bmc_register(ipmi_smi_t intf)
+{
+ int rv;
+ struct bmc_device *bmc = intf->bmc;
+ struct bmc_device *old_bmc;
+ int size;
+ char dummy[1];
+
+ mutex_lock(&ipmidriver_mutex);
+
+ /*
+ * Try to find if there is an bmc_device struct
+ * representing the interfaced BMC already
+ */
+ if (bmc->guid_set)
+ old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid);
+ else
+ old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver,
+ bmc->id.product_id,
+ bmc->id.device_id);
+
+ /*
+ * If there is already an bmc_device, free the new one,
+ * otherwise register the new BMC device
+ */
+ if (old_bmc) {
+ kfree(bmc);
+ intf->bmc = old_bmc;
+ bmc = old_bmc;
+
+ kref_get(&bmc->refcount);
+ mutex_unlock(&ipmidriver_mutex);
+
+ printk(KERN_INFO
+ "ipmi: interfacing existing BMC (man_id: 0x%6.6x,"
+ " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+ bmc->id.manufacturer_id,
+ bmc->id.product_id,
+ bmc->id.device_id);
+ } else {
+ bmc->dev = platform_device_alloc("ipmi_bmc",
+ bmc->id.device_id);
+ if (! bmc->dev) {
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to allocate platform device\n");
+ return -ENOMEM;
+ }
+ bmc->dev->dev.driver = &ipmidriver;
+ dev_set_drvdata(&bmc->dev->dev, bmc);
+ kref_init(&bmc->refcount);
+
+ rv = platform_device_register(bmc->dev);
+ mutex_unlock(&ipmidriver_mutex);
+ if (rv) {
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to register bmc device: %d\n",
+ rv);
+ /* Don't go to out_err, you can only do that if
+ the device is registered already. */
+ return rv;
+ }
+
+ bmc->device_id_attr.attr.name = "device_id";
+ bmc->device_id_attr.attr.owner = THIS_MODULE;
+ bmc->device_id_attr.attr.mode = S_IRUGO;
+ bmc->device_id_attr.show = device_id_show;
+
+ bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs";
+ bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE;
+ bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO;
+ bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show;
+
+
+ bmc->revision_attr.attr.name = "revision";
+ bmc->revision_attr.attr.owner = THIS_MODULE;
+ bmc->revision_attr.attr.mode = S_IRUGO;
+ bmc->revision_attr.show = revision_show;
+
+ bmc->firmware_rev_attr.attr.name = "firmware_revision";
+ bmc->firmware_rev_attr.attr.owner = THIS_MODULE;
+ bmc->firmware_rev_attr.attr.mode = S_IRUGO;
+ bmc->firmware_rev_attr.show = firmware_rev_show;
+
+ bmc->version_attr.attr.name = "ipmi_version";
+ bmc->version_attr.attr.owner = THIS_MODULE;
+ bmc->version_attr.attr.mode = S_IRUGO;
+ bmc->version_attr.show = ipmi_version_show;
+
+ bmc->add_dev_support_attr.attr.name
+ = "additional_device_support";
+ bmc->add_dev_support_attr.attr.owner = THIS_MODULE;
+ bmc->add_dev_support_attr.attr.mode = S_IRUGO;
+ bmc->add_dev_support_attr.show = add_dev_support_show;
+
+ bmc->manufacturer_id_attr.attr.name = "manufacturer_id";
+ bmc->manufacturer_id_attr.attr.owner = THIS_MODULE;
+ bmc->manufacturer_id_attr.attr.mode = S_IRUGO;
+ bmc->manufacturer_id_attr.show = manufacturer_id_show;
+
+ bmc->product_id_attr.attr.name = "product_id";
+ bmc->product_id_attr.attr.owner = THIS_MODULE;
+ bmc->product_id_attr.attr.mode = S_IRUGO;
+ bmc->product_id_attr.show = product_id_show;
+
+ bmc->guid_attr.attr.name = "guid";
+ bmc->guid_attr.attr.owner = THIS_MODULE;
+ bmc->guid_attr.attr.mode = S_IRUGO;
+ bmc->guid_attr.show = guid_show;
+
+ bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision";
+ bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE;
+ bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO;
+ bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show;
+
+ device_create_file(&bmc->dev->dev,
+ &bmc->device_id_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->provides_dev_sdrs_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->revision_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->firmware_rev_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->version_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->add_dev_support_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->manufacturer_id_attr);
+ device_create_file(&bmc->dev->dev,
+ &bmc->product_id_attr);
+ if (bmc->id.aux_firmware_revision_set)
+ device_create_file(&bmc->dev->dev,
+ &bmc->aux_firmware_rev_attr);
+ if (bmc->guid_set)
+ device_create_file(&bmc->dev->dev,
+ &bmc->guid_attr);
+
+ printk(KERN_INFO
+ "ipmi: Found new BMC (man_id: 0x%6.6x, "
+ " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+ bmc->id.manufacturer_id,
+ bmc->id.product_id,
+ bmc->id.device_id);
+ }
+
+ /*
+ * create symlink from system interface device to bmc device
+ * and back.
+ */
+ rv = sysfs_create_link(&intf->si_dev->kobj,
+ &bmc->dev->dev.kobj, "bmc");
+ if (rv) {
+ printk(KERN_ERR
+ "ipmi_msghandler: Unable to create bmc symlink: %d\n",
+ rv);
+ goto out_err;
+ }
+
+ size = snprintf(dummy, 0, "ipmi%d", intf->intf_num);
+ intf->my_dev_name = kmalloc(size+1, GFP_KERNEL);
+ if (!intf->my_dev_name) {
+ rv = -ENOMEM;
+ printk(KERN_ERR
+ "ipmi_msghandler: allocate link from BMC: %d\n",
+ rv);
+ goto out_err;
+ }
+ snprintf(intf->my_dev_name, size+1, "ipmi%d", intf->intf_num);
+
+ rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj,
+ intf->my_dev_name);
+ if (rv) {
+ kfree(intf->my_dev_name);
+ intf->my_dev_name = NULL;
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to create symlink to bmc: %d\n",
+ rv);
+ goto out_err;
+ }
+
+ return 0;
+
+out_err:
+ ipmi_bmc_unregister(intf);
+ return rv;
+}
+
+static int
+send_guid_cmd(ipmi_smi_t intf, int chan)
+{
+ struct kernel_ipmi_msg msg;
+ struct ipmi_system_interface_addr si;
+
+ si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ si.channel = IPMI_BMC_CHANNEL;
+ si.lun = 0;
+
+ msg.netfn = IPMI_NETFN_APP_REQUEST;
+ msg.cmd = IPMI_GET_DEVICE_GUID_CMD;
+ msg.data = NULL;
+ msg.data_len = 0;
+ return i_ipmi_request(NULL,
+ intf,
+ (struct ipmi_addr *) &si,
+ 0,
+ &msg,
+ intf,
+ NULL,
+ NULL,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ -1, 0);
+}
+
+static void
+guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg)
+{
+ if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE)
+ || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD))
+ /* Not for me */
+ return;
+
+ if (msg->msg.data[0] != 0) {
+ /* Error from getting the GUID, the BMC doesn't have one. */
+ intf->bmc->guid_set = 0;
+ goto out;
+ }
+
+ if (msg->msg.data_len < 17) {
+ intf->bmc->guid_set = 0;
+ printk(KERN_WARNING PFX
+ "guid_handler: The GUID response from the BMC was too"
+ " short, it was %d but should have been 17. Assuming"
+ " GUID is not available.\n",
+ msg->msg.data_len);
+ goto out;
+ }
+
+ memcpy(intf->bmc->guid, msg->msg.data, 16);
+ intf->bmc->guid_set = 1;
+ out:
+ wake_up(&intf->waitq);
+}
+
+static void
+get_guid(ipmi_smi_t intf)
+{
+ int rv;
+
+ intf->bmc->guid_set = 0x2;
+ intf->null_user_handler = guid_handler;
+ rv = send_guid_cmd(intf, 0);
+ if (rv)
+ /* Send failed, no GUID available. */
+ intf->bmc->guid_set = 0;
+ wait_event(intf->waitq, intf->bmc->guid_set != 2);
+ intf->null_user_handler = NULL;
+}
+
static int
send_channel_info_cmd(ipmi_smi_t intf, int chan)
{
int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
void *send_info,
- unsigned char version_major,
- unsigned char version_minor,
+ struct ipmi_device_id *device_id,
+ struct device *si_dev,
unsigned char slave_addr,
ipmi_smi_t *new_intf)
{
int rv;
ipmi_smi_t intf;
unsigned long flags;
+ int version_major;
+ int version_minor;
+ version_major = ipmi_version_major(device_id);
+ version_minor = ipmi_version_minor(device_id);
/* Make sure the driver is actually initialized, this handles
problems with initialization order. */
if (!intf)
return -ENOMEM;
memset(intf, 0, sizeof(*intf));
+ intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL);
+ if (!intf->bmc) {
+ kfree(intf);
+ return -ENOMEM;
+ }
intf->intf_num = -1;
kref_init(&intf->refcount);
- intf->version_major = version_major;
- intf->version_minor = version_minor;
+ intf->bmc->id = *device_id;
+ intf->si_dev = si_dev;
for (j = 0; j < IPMI_MAX_CHANNELS; j++) {
intf->channels[j].address = IPMI_BMC_SLAVE_ADDR;
intf->channels[j].lun = 2;
caller before sending any messages with it. */
*new_intf = intf;
+ get_guid(intf);
+
if ((version_major > 1)
|| ((version_major == 1) && (version_minor >= 5)))
{
/* Wait for the channel info to be read. */
wait_event(intf->waitq,
intf->curr_channel >= IPMI_MAX_CHANNELS);
+ intf->null_user_handler = NULL;
} else {
/* Assume a single IPMB channel at zero. */
intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB;
if (rv == 0)
rv = add_proc_entries(intf, i);
+ rv = ipmi_bmc_register(intf);
+
out:
if (rv) {
if (intf->proc_dir)
spin_lock_irqsave(&interfaces_lock, flags);
ipmi_interfaces[i] = intf;
spin_unlock_irqrestore(&interfaces_lock, flags);
- call_smi_watchers(i);
+ call_smi_watchers(i, intf->si_dev);
}
return rv;
struct ipmi_smi_watcher *w;
unsigned long flags;
+ ipmi_bmc_unregister(intf);
+
spin_lock_irqsave(&interfaces_lock, flags);
for (i = 0; i < MAX_IPMI_INTERFACES; i++) {
if (ipmi_interfaces[i] == intf) {
static int ipmi_init_msghandler(void)
{
int i;
+ int rv;
if (initialized)
return 0;
+ rv = driver_register(&ipmidriver);
+ if (rv) {
+ printk(KERN_ERR PFX "Could not register IPMI driver\n");
+ return rv;
+ }
+
printk(KERN_INFO "ipmi message handler version "
IPMI_DRIVER_VERSION "\n");
remove_proc_entry(proc_ipmi_root->name, &proc_root);
#endif /* CONFIG_PROC_FS */
+ driver_unregister(&ipmidriver);
+
initialized = 0;
/* Check for buffer leaks. */
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff