[11/29] net/ena/base: use 48-bit memory addresses in ena_com
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Message ID 20200327101823.12646-12-mk@semihalf.com
State Superseded, archived
Delegated to: Andrew Rybchenko
Headers show
Series
  • Update ENA driver to v2.1.0
Related show

Checks

Context Check Description
ci/Intel-compilation fail Compilation issues
ci/checkpatch success coding style OK

Commit Message

Michał Krawczyk March 27, 2020, 10:18 a.m. UTC
ENA device is using 48-bit memory for IO. because of that, the upper
limit had to be updated.

Signed-off-by: Michal Krawczyk <mk@semihalf.com>
Reviewed-by: Igor Chauskin <igorch@amazon.com>
Reviewed-by: Guy Tzalik <gtzalik@amazon.com>
---
 drivers/net/ena/base/ena_com.c                  | 2 +-
 drivers/net/ena/base/ena_defs/ena_common_defs.h | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

Patch
diff mbox series

diff --git a/drivers/net/ena/base/ena_com.c b/drivers/net/ena/base/ena_com.c
index 7c1d0aef20..b7749209b3 100644
--- a/drivers/net/ena/base/ena_com.c
+++ b/drivers/net/ena/base/ena_com.c
@@ -73,7 +73,7 @@  static int ena_com_mem_addr_set(struct ena_com_dev *ena_dev,
 	}
 
 	ena_addr->mem_addr_low = lower_32_bits(addr);
-	ena_addr->mem_addr_high = upper_32_bits(addr);
+	ena_addr->mem_addr_high = (u16)upper_32_bits(addr);
 
 	return 0;
 }
diff --git a/drivers/net/ena/base/ena_defs/ena_common_defs.h b/drivers/net/ena/base/ena_defs/ena_common_defs.h
index 1818c29a87..349474d265 100644
--- a/drivers/net/ena/base/ena_defs/ena_common_defs.h
+++ b/drivers/net/ena/base/ena_defs/ena_common_defs.h
@@ -9,10 +9,14 @@ 
 #define ENA_COMMON_SPEC_VERSION_MAJOR        2
 #define ENA_COMMON_SPEC_VERSION_MINOR        0
 
+/* ENA operates with 48-bit memory addresses. ena_mem_addr_t */
 struct ena_common_mem_addr {
 	uint32_t mem_addr_low;
 
-	uint32_t mem_addr_high;
+	uint16_t mem_addr_high;
+
+	/* MBZ */
+	uint16_t reserved16;
 };
 
 #endif /* _ENA_COMMON_H_ */