bnxt_en: Enable batch mode when using HWRM_NVM_MODIFY to flash packages.

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The current scheme allocates a DMA buffer as big as the requested
firmware package file and DMAs the contents to firmware in one
operation.  The buffer size can be several hundred kilo bytes and
the driver may not be able to allocate the memory.  This will cause
firmware upgrade to fail.

Improve the scheme by using smaller DMA blocks and calling firmware to
DMA each block in a batch mode.  Older firmware can cause excessive
NVRAM erases if the block size is too small so we try to allocate a
256K buffer to begin with and size it down successively if we cannot
allocate the memory.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Michael Chan 2020-12-13 06:51:46 -05:00 • committed by Jakub Kicinski

parent 1432c3f6a6

commit a86b313e18

1 changed files with 40 additions and 9 deletions

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49

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

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