Merge tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver patch pull request for 5.1-rc1.

  The largest thing by far is the new habanalabs driver for their AI
  accelerator chip. For now it is in the drivers/misc directory but will
  probably move to a new directory soon along with other drivers of this
  type.

  Other than that, just the usual set of individual driver updates and
  fixes. There's an "odd" merge in here from the DRM tree that they
  asked me to do as the MEI driver is starting to interact with the i915
  driver, and it needed some coordination. All of those patches have
  been properly acked by the relevant subsystem maintainers.

  All of these have been in linux-next with no reported issues, most for
  quite some time"

* tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits)
  habanalabs: adjust Kconfig to fix build errors
  habanalabs: use %px instead of %p in error print
  habanalabs: use do_div for 64-bit divisions
  intel_th: gth: Fix an off-by-one in output unassigning
  habanalabs: fix little-endian<->cpu conversion warnings
  habanalabs: use NULL to initialize array of pointers
  habanalabs: fix little-endian<->cpu conversion warnings
  habanalabs: soft-reset device if context-switch fails
  habanalabs: print pointer using %p
  habanalabs: fix memory leak with CBs with unaligned size
  habanalabs: return correct error code on MMU mapping failure
  habanalabs: add comments in uapi/misc/habanalabs.h
  habanalabs: extend QMAN0 job timeout
  habanalabs: set DMA0 completion to SOB 1007
  habanalabs: fix validation of WREG32 to DMA completion
  habanalabs: fix mmu cache registers init
  habanalabs: disable CPU access on timeouts
  habanalabs: add MMU DRAM default page mapping
  habanalabs: Dissociate RAZWI info from event types
  misc/habanalabs: adjust Kconfig to fix build errors
  ...

5 files changed, 80 insertions, 46 deletions

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index bea4c9850247..23381c41d087 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -282,8 +282,8 @@ int vmbus_open(struct vmbus_channel *newchannel,
 EXPORT_SYMBOL_GPL(vmbus_open);
 
 /* Used for Hyper-V Socket: a guest client's connect() to the host */
-int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,
-				  const uuid_le *shv_host_servie_id)
+int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
+				  const guid_t *shv_host_servie_id)
 {
 	struct vmbus_channel_tl_connect_request conn_msg;
 	int ret;
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index d01689079e9b..62703b354d6d 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -141,7 +141,7 @@ static const struct vmbus_device vmbus_devs[] = {
 };
 
 static const struct {
-	uuid_le guid;
+	guid_t guid;
 } vmbus_unsupported_devs[] = {
 	{ HV_AVMA1_GUID },
 	{ HV_AVMA2_GUID },
@@ -171,26 +171,26 @@ static void vmbus_rescind_cleanup(struct vmbus_channel *channel)
 	spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
 }
 
-static bool is_unsupported_vmbus_devs(const uuid_le *guid)
+static bool is_unsupported_vmbus_devs(const guid_t *guid)
 {
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(vmbus_unsupported_devs); i++)
-		if (!uuid_le_cmp(*guid, vmbus_unsupported_devs[i].guid))
+		if (guid_equal(guid, &vmbus_unsupported_devs[i].guid))
 			return true;
 	return false;
 }
 
 static u16 hv_get_dev_type(const struct vmbus_channel *channel)
 {
-	const uuid_le *guid = &channel->offermsg.offer.if_type;
+	const guid_t *guid = &channel->offermsg.offer.if_type;
 	u16 i;
 
 	if (is_hvsock_channel(channel) || is_unsupported_vmbus_devs(guid))
 		return HV_UNKNOWN;
 
 	for (i = HV_IDE; i < HV_UNKNOWN; i++) {
-		if (!uuid_le_cmp(*guid, vmbus_devs[i].guid))
+		if (guid_equal(guid, &vmbus_devs[i].guid))
 			return i;
 	}
 	pr_info("Unknown GUID: %pUl\n", guid);
@@ -561,10 +561,10 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
 	atomic_dec(&vmbus_connection.offer_in_progress);
 
 	list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {
-		if (!uuid_le_cmp(channel->offermsg.offer.if_type,
-				 newchannel->offermsg.offer.if_type) &&
-		    !uuid_le_cmp(channel->offermsg.offer.if_instance,
-				 newchannel->offermsg.offer.if_instance)) {
+		if (guid_equal(&channel->offermsg.offer.if_type,
+			       &newchannel->offermsg.offer.if_type) &&
+		    guid_equal(&channel->offermsg.offer.if_instance,
+			       &newchannel->offermsg.offer.if_instance)) {
 			fnew = false;
 			break;
 		}
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index a1f6ce6e5974..cb86b133eb4d 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -312,8 +312,8 @@ extern const struct vmbus_channel_message_table_entry
 
 /* General vmbus interface */
 
-struct hv_device *vmbus_device_create(const uuid_le *type,
-				      const uuid_le *instance,
+struct hv_device *vmbus_device_create(const guid_t *type,
+				      const guid_t *instance,
 				      struct vmbus_channel *channel);
 
 int vmbus_device_register(struct hv_device *child_device_obj);
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 1f1a55e07733..9e8b31ccc142 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -74,8 +74,10 @@ static void hv_signal_on_write(u32 old_write, struct vmbus_channel *channel)
 	 * This is the only case we need to signal when the
 	 * ring transitions from being empty to non-empty.
 	 */
-	if (old_write == READ_ONCE(rbi->ring_buffer->read_index))
+	if (old_write == READ_ONCE(rbi->ring_buffer->read_index)) {
+		++channel->intr_out_empty;
 		vmbus_setevent(channel);
+	}
 }
 
 /* Get the next write location for the specified ring buffer. */
@@ -272,10 +274,19 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
 	 * is empty since the read index == write index.
 	 */
 	if (bytes_avail_towrite <= totalbytes_towrite) {
+		++channel->out_full_total;
+
+		if (!channel->out_full_flag) {
+			++channel->out_full_first;
+			channel->out_full_flag = true;
+		}
+
 		spin_unlock_irqrestore(&outring_info->ring_lock, flags);
 		return -EAGAIN;
 	}
 
+	channel->out_full_flag = false;
+
 	/* Write to the ring buffer */
 	next_write_location = hv_get_next_write_location(outring_info);
 
@@ -530,6 +541,7 @@ void hv_pkt_iter_close(struct vmbus_channel *channel)
 	if (curr_write_sz <= pending_sz)
 		return;
 
+	++channel->intr_in_full;
 	vmbus_setevent(channel);
 }
 EXPORT_SYMBOL_GPL(hv_pkt_iter_close);
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 403fee01572c..000b53e5a17a 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -234,7 +234,7 @@ static ssize_t server_monitor_pending_show(struct device *dev,
 		return -ENODEV;
 	return sprintf(buf, "%d\n",
 		       channel_pending(hv_dev->channel,
-				       vmbus_connection.monitor_pages[1]));
+				       vmbus_connection.monitor_pages[0]));
 }
 static DEVICE_ATTR_RO(server_monitor_pending);
 
@@ -654,38 +654,28 @@ static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env)
 	return ret;
 }
 
-static const uuid_le null_guid;
-
-static inline bool is_null_guid(const uuid_le *guid)
-{
-	if (uuid_le_cmp(*guid, null_guid))
-		return false;
-	return true;
-}
-
 static const struct hv_vmbus_device_id *
-hv_vmbus_dev_match(const struct hv_vmbus_device_id *id, const uuid_le *guid)
-
+hv_vmbus_dev_match(const struct hv_vmbus_device_id *id, const guid_t *guid)
 {
 	if (id == NULL)
 		return NULL; /* empty device table */
 
-	for (; !is_null_guid(&id->guid); id++)
-		if (!uuid_le_cmp(id->guid, *guid))
+	for (; !guid_is_null(&id->guid); id++)
+		if (guid_equal(&id->guid, guid))
 			return id;
 
 	return NULL;
 }
 
 static const struct hv_vmbus_device_id *
-hv_vmbus_dynid_match(struct hv_driver *drv, const uuid_le *guid)
+hv_vmbus_dynid_match(struct hv_driver *drv, const guid_t *guid)
 {
 	const struct hv_vmbus_device_id *id = NULL;
 	struct vmbus_dynid *dynid;
 
 	spin_lock(&drv->dynids.lock);
 	list_for_each_entry(dynid, &drv->dynids.list, node) {
-		if (!uuid_le_cmp(dynid->id.guid, *guid)) {
+		if (guid_equal(&dynid->id.guid, guid)) {
 			id = &dynid->id;
 			break;
 		}
@@ -695,9 +685,7 @@ hv_vmbus_dynid_match(struct hv_driver *drv, const uuid_le *guid)
 	return id;
 }
 
-static const struct hv_vmbus_device_id vmbus_device_null = {
-	.guid = NULL_UUID_LE,
-};
+static const struct hv_vmbus_device_id vmbus_device_null;
 
 /*
  * Return a matching hv_vmbus_device_id pointer.
@@ -706,7 +694,7 @@ static const struct hv_vmbus_device_id vmbus_device_null = {
 static const struct hv_vmbus_device_id *hv_vmbus_get_id(struct hv_driver *drv,
 							struct hv_device *dev)
 {
-	const uuid_le *guid = &dev->dev_type;
+	const guid_t *guid = &dev->dev_type;
 	const struct hv_vmbus_device_id *id;
 
 	/* When driver_override is set, only bind to the matching driver */
@@ -726,7 +714,7 @@ static const struct hv_vmbus_device_id *hv_vmbus_get_id(struct hv_driver *drv,
 }
 
 /* vmbus_add_dynid - add a new device ID to this driver and re-probe devices */
-static int vmbus_add_dynid(struct hv_driver *drv, uuid_le *guid)
+static int vmbus_add_dynid(struct hv_driver *drv, guid_t *guid)
 {
 	struct vmbus_dynid *dynid;
 
@@ -764,10 +752,10 @@ static ssize_t new_id_store(struct device_driver *driver, const char *buf,
 			    size_t count)
 {
 	struct hv_driver *drv = drv_to_hv_drv(driver);
-	uuid_le guid;
+	guid_t guid;
 	ssize_t retval;
 
-	retval = uuid_le_to_bin(buf, &guid);
+	retval = guid_parse(buf, &guid);
 	if (retval)
 		return retval;
 
@@ -791,10 +779,10 @@ static ssize_t remove_id_store(struct device_driver *driver, const char *buf,
 {
 	struct hv_driver *drv = drv_to_hv_drv(driver);
 	struct vmbus_dynid *dynid, *n;
-	uuid_le guid;
+	guid_t guid;
 	ssize_t retval;
 
-	retval = uuid_le_to_bin(buf, &guid);
+	retval = guid_parse(buf, &guid);
 	if (retval)
 		return retval;
 
@@ -803,7 +791,7 @@ static ssize_t remove_id_store(struct device_driver *driver, const char *buf,
 	list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
 		struct hv_vmbus_device_id *id = &dynid->id;
 
-		if (!uuid_le_cmp(id->guid, guid)) {
+		if (guid_equal(&id->guid, &guid)) {
 			list_del(&dynid->node);
 			kfree(dynid);
 			retval = count;
@@ -1496,6 +1484,38 @@ static ssize_t channel_events_show(const struct vmbus_channel *channel, char *bu
 }
 static VMBUS_CHAN_ATTR(events, S_IRUGO, channel_events_show, NULL);
 
+static ssize_t channel_intr_in_full_show(const struct vmbus_channel *channel,
+					 char *buf)
+{
+	return sprintf(buf, "%llu\n",
+		       (unsigned long long)channel->intr_in_full);
+}
+static VMBUS_CHAN_ATTR(intr_in_full, 0444, channel_intr_in_full_show, NULL);
+
+static ssize_t channel_intr_out_empty_show(const struct vmbus_channel *channel,
+					   char *buf)
+{
+	return sprintf(buf, "%llu\n",
+		       (unsigned long long)channel->intr_out_empty);
+}
+static VMBUS_CHAN_ATTR(intr_out_empty, 0444, channel_intr_out_empty_show, NULL);
+
+static ssize_t channel_out_full_first_show(const struct vmbus_channel *channel,
+					   char *buf)
+{
+	return sprintf(buf, "%llu\n",
+		       (unsigned long long)channel->out_full_first);
+}
+static VMBUS_CHAN_ATTR(out_full_first, 0444, channel_out_full_first_show, NULL);
+
+static ssize_t channel_out_full_total_show(const struct vmbus_channel *channel,
+					   char *buf)
+{
+	return sprintf(buf, "%llu\n",
+		       (unsigned long long)channel->out_full_total);
+}
+static VMBUS_CHAN_ATTR(out_full_total, 0444, channel_out_full_total_show, NULL);
+
 static ssize_t subchannel_monitor_id_show(const struct vmbus_channel *channel,
 					  char *buf)
 {
@@ -1521,6 +1541,10 @@ static struct attribute *vmbus_chan_attrs[] = {
 	&chan_attr_latency.attr,
 	&chan_attr_interrupts.attr,
 	&chan_attr_events.attr,
+	&chan_attr_intr_in_full.attr,
+	&chan_attr_intr_out_empty.attr,
+	&chan_attr_out_full_first.attr,
+	&chan_attr_out_full_total.attr,
 	&chan_attr_monitor_id.attr,
 	&chan_attr_subchannel_id.attr,
 	NULL
@@ -1556,8 +1580,8 @@ int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
  * vmbus_device_create - Creates and registers a new child device
  * on the vmbus.
  */
-struct hv_device *vmbus_device_create(const uuid_le *type,
-				      const uuid_le *instance,
+struct hv_device *vmbus_device_create(const guid_t *type,
+				      const guid_t *instance,
 				      struct vmbus_channel *channel)
 {
 	struct hv_device *child_device_obj;
@@ -1569,12 +1593,10 @@ struct hv_device *vmbus_device_create(const uuid_le *type,
 	}
 
 	child_device_obj->channel = channel;
-	memcpy(&child_device_obj->dev_type, type, sizeof(uuid_le));
-	memcpy(&child_device_obj->dev_instance, instance,
-	       sizeof(uuid_le));
+	guid_copy(&child_device_obj->dev_type, type);
+	guid_copy(&child_device_obj->dev_instance, instance);
 	child_device_obj->vendor_id = 0x1414; /* MSFT vendor ID */
 
-
 	return child_device_obj;
 }