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[arbel] Optimise ICM layout to reduce overall memory usage

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Reduce the amount of ICM space required by choosing to order the
various allocations in approximately descending order of alignment
requirements.

This saves approximately 512kB of host memory.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2010-09-17 20:53:29 +01:00
parent d84e4e0575
commit 144a23a852
2 changed files with 150 additions and 89 deletions
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6
src/drivers/infiniband/arbel.h
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@@ -91,9 +91,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define ARBEL_INVALID_LKEY 0x00000100UL
#define ARBEL_PAGE_SIZE 4096
#define ARBEL_PAGE_SIZE ( ( size_t ) 4096 )
#define ARBEL_RDB_ENTRY_SIZE 32
#define ARBEL_RDB_ENTRY_SIZE ( ( size_t ) 32 )
#define ARBEL_DB_POST_SND_OFFSET 0x10
#define ARBEL_DB_EQ_OFFSET(_eqn) ( 0x08 * (_eqn) )
@@ -308,6 +308,8 @@ struct arbel_dev_limits {
size_t eqc_entry_size;
/** Number of reserved UARs */
unsigned int reserved_uars;
/** UAR scratchpad entry size */
size_t uar_scratch_entry_size;
};
/** Alignment of Arbel send work queue entries */