scsi: mpi3mr: Support for preallocation of SGL BSG data buffers part-1

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The driver now supports SGLs for BSG data transfer. Upon loading, the
driver pre-allocates SGLs in chunks of 8k, results in a total of 256 * 8k,
equal to 2MB. These pre-allocated SGLs are reserved for handling BSG
commands and are deallocated during driver unload.

Co-developed-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Chandrakanth patil <chandrakanth.patil@broadcom.com>
Link: https://lore.kernel.org/r/20231205191630.12201-2-chandrakanth.patil@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Chandrakanth patil 2023-12-06 00:46:27 +05:30 • committed by Martin K. Petersen

parent 07ac6adda4

commit c432e16752

2 changed files with 127 additions and 0 deletions

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15

drivers/scsi/mpi3mr/mpi3mr.h

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112

drivers/scsi/mpi3mr/mpi3mr_fw.c

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