Merge tag 'char-misc-4.19-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 bit set of char/misc drivers for 4.19-rc1

  There is a lot here, much more than normal, seems like everyone is
  writing new driver subsystems these days... Anyway, major things here
  are:

   - new FSI driver subsystem, yet-another-powerpc low-level hardware
     bus

   - gnss, finally an in-kernel GPS subsystem to try to tame all of the
     crazy out-of-tree drivers that have been floating around for years,
     combined with some really hacky userspace implementations. This is
     only for GNSS receivers, but you have to start somewhere, and this
     is great to see.

  Other than that, there are new slimbus drivers, new coresight drivers,
  new fpga drivers, and loads of DT bindings for all of these and
  existing drivers.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits)
  android: binder: Rate-limit debug and userspace triggered err msgs
  fsi: sbefifo: Bump max command length
  fsi: scom: Fix NULL dereference
  misc: mic: SCIF Fix scif_get_new_port() error handling
  misc: cxl: changed asterisk position
  genwqe: card_base: Use true and false for boolean values
  misc: eeprom: assignment outside the if statement
  uio: potential double frees if __uio_register_device() fails
  eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency
  misc: ti-st: Fix memory leak in the error path of probe()
  android: binder: Show extra_buffers_size in trace
  firmware: vpd: Fix section enabled flag on vpd_section_destroy
  platform: goldfish: Retire pdev_bus
  goldfish: Use dedicated macros instead of manual bit shifting
  goldfish: Add missing includes to goldfish.h
  mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux
  dt-bindings: mux: add adi,adgs1408
  Drivers: hv: vmbus: Cleanup synic memory free path
  Drivers: hv: vmbus: Remove use of slow_virt_to_phys()
  Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind()
  ...

1 files changed, 29 insertions, 8 deletions

diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index fe6595fe94f1..09e233d4c0de 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -96,6 +96,20 @@ static int mei_cl_conn_status_to_errno(enum mei_cl_connect_status status)
 }
 
 /**
+ * mei_hbm_write_message - wrapper for sending hbm messages.
+ *
+ * @dev: mei device
+ * @hdr: mei header
+ * @data: payload
+ */
+static inline int mei_hbm_write_message(struct mei_device *dev,
+					struct mei_msg_hdr *hdr,
+					const void *data)
+{
+	return mei_write_message(dev, hdr, sizeof(*hdr), data, hdr->length);
+}
+
+/**
  * mei_hbm_idle - set hbm to idle state
  *
  * @dev: the device structure
@@ -131,6 +145,7 @@ static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
 	hdr->me_addr = 0;
 	hdr->length = length;
 	hdr->msg_complete = 1;
+	hdr->dma_ring = 0;
 	hdr->reserved = 0;
 	hdr->internal = 0;
 }
@@ -174,7 +189,7 @@ static inline int mei_hbm_cl_write(struct mei_device *dev, struct mei_cl *cl,
 	mei_hbm_hdr(&mei_hdr, len);
 	mei_hbm_cl_hdr(cl, hbm_cmd, buf, len);
 
-	return mei_write_message(dev, &mei_hdr, buf);
+	return mei_hbm_write_message(dev, &mei_hdr, buf);
 }
 
 /**
@@ -267,7 +282,7 @@ int mei_hbm_start_req(struct mei_device *dev)
 	start_req.host_version.minor_version = HBM_MINOR_VERSION;
 
 	dev->hbm_state = MEI_HBM_IDLE;
-	ret = mei_write_message(dev, &mei_hdr, &start_req);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &start_req);
 	if (ret) {
 		dev_err(dev->dev, "version message write failed: ret = %d\n",
 			ret);
@@ -304,7 +319,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev)
 	enum_req.flags |= dev->hbm_f_ie_supported ?
 			  MEI_HBM_ENUM_F_IMMEDIATE_ENUM : 0;
 
-	ret = mei_write_message(dev, &mei_hdr, &enum_req);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &enum_req);
 	if (ret) {
 		dev_err(dev->dev, "enumeration request write failed: ret = %d.\n",
 			ret);
@@ -373,7 +388,7 @@ static int mei_hbm_add_cl_resp(struct mei_device *dev, u8 addr, u8 status)
 	resp.me_addr = addr;
 	resp.status  = status;
 
-	ret = mei_write_message(dev, &mei_hdr, &resp);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &resp);
 	if (ret)
 		dev_err(dev->dev, "add client response write failed: ret = %d\n",
 			ret);
@@ -430,7 +445,7 @@ int mei_hbm_cl_notify_req(struct mei_device *dev,
 
 	req.start = start;
 
-	ret = mei_write_message(dev, &mei_hdr, &req);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &req);
 	if (ret)
 		dev_err(dev->dev, "notify request failed: ret = %d\n", ret);
 
@@ -555,7 +570,7 @@ static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx)
 	prop_req.hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
 	prop_req.me_addr = addr;
 
-	ret = mei_write_message(dev, &mei_hdr, &prop_req);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &prop_req);
 	if (ret) {
 		dev_err(dev->dev, "properties request write failed: ret = %d\n",
 			ret);
@@ -592,7 +607,7 @@ int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
 	memset(&req, 0, len);
 	req.hbm_cmd = pg_cmd;
 
-	ret = mei_write_message(dev, &mei_hdr, &req);
+	ret = mei_hbm_write_message(dev, &mei_hdr, &req);
 	if (ret)
 		dev_err(dev->dev, "power gate command write failed.\n");
 	return ret;
@@ -618,7 +633,7 @@ static int mei_hbm_stop_req(struct mei_device *dev)
 	req.hbm_cmd = HOST_STOP_REQ_CMD;
 	req.reason = DRIVER_STOP_REQUEST;
 
-	return mei_write_message(dev, &mei_hdr, &req);
+	return mei_hbm_write_message(dev, &mei_hdr, &req);
 }
 
 /**
@@ -992,6 +1007,12 @@ static void mei_hbm_config_features(struct mei_device *dev)
 	/* OS ver message Support */
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_OS)
 		dev->hbm_f_os_supported = 1;
+
+	/* DMA Ring Support */
+	if (dev->version.major_version > HBM_MAJOR_VERSION_DR ||
+	    (dev->version.major_version == HBM_MAJOR_VERSION_DR &&
+	     dev->version.minor_version >= HBM_MINOR_VERSION_DR))
+		dev->hbm_f_dr_supported = 1;
 }
 
 /**