habanalabs: add h/w queues module

This patch adds the H/W queues module and the code to initialize Goya's
various compute and DMA engines and their queues.

Goya has 5 DMA channels, 8 TPC engines and a single MME engine. For each
channel/engine, there is a H/W queue logic which is used to pass commands
from the user to the H/W. That logic is called QMAN.

There are two types of QMANs: external and internal. The DMA QMANs are
considered external while the TPC and MME QMANs are considered internal.
For each external queue there is a completion queue, which is located on
the Host memory.

The differences between external and internal QMANs are:

1. The location of the queue's memory. External QMANs are located on the
   Host memory while internal QMANs are located on the on-chip memory.

2. The external QMAN write an entry to a completion queue and sends an
   MSI-X interrupt upon completion of a command buffer that was given to
   it. The internal QMAN doesn't do that.

Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/goya/goyaP.h b/drivers/misc/habanalabs/goya/goyaP.h
index 65cbb45d7083..791605cbecfe 100644
--- a/drivers/misc/habanalabs/goya/goyaP.h
+++ b/drivers/misc/habanalabs/goya/goyaP.h
@@ -11,7 +11,9 @@
 #include <uapi/misc/habanalabs.h>
 #include "habanalabs.h"
 #include "include/hl_boot_if.h"
+#include "include/goya/goya_packets.h"
 #include "include/goya/goya.h"
+#include "include/goya/goya_async_events.h"
 #include "include/goya/goya_fw_if.h"
 
 #define NUMBER_OF_CMPLT_QUEUES		5
@@ -145,12 +147,17 @@ enum goya_fw_component {
 };
 
 struct goya_device {
+	int (*test_cpu_queue)(struct hl_device *hdev);
+
 	/* TODO: remove hw_queues_lock after moving to scheduler code */
 	spinlock_t	hw_queues_lock;
 	u64		ddr_bar_cur_addr;
 	u32		hw_cap_initialized;
 };
 
+int goya_test_cpu_queue(struct hl_device *hdev);
+int goya_send_cpu_message(struct hl_device *hdev, u32 *msg, u16 len,
+				u32 timeout, long *result);
 void goya_init_security(struct hl_device *hdev);
 
 #endif /* GOYAP_H_ */