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net: cadence_gem: Add support for extended descriptors

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Add support for extended descriptors with optional 64bit
addressing and timestamping. QEMU will not yet provide
timestamps (always leaving the valid timestamp bit as zero).

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20181011021931.4249-6-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Edgar E. Iglesias 2018-10-11 04:19:24 +02:00 • committed by Peter Maydell
parent 8568313f3b
commit e48fdd9d90
2 changed files with 52 additions and 19 deletions
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2
include/hw/net/cadence_gem.h
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@ -33,7 +33,7 @@
#define CADENCE_GEM_MAXREG (0x00000800 / 4) /* Last valid GEM address */
/* Max number of words in a DMA descriptor. */
#define DESC_MAX_NUM_WORDS 2
#define DESC_MAX_NUM_WORDS 6
#define MAX_PRIORITY_QUEUES 8
#define MAX_TYPE1_SCREENERS 16