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sfxge(4): add firmware subvariant aware driver option

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FW subvariants allow to tweak NIC global features. For example,
if no drivers require checksumming on transmit, it may be disabled
in FW to increase packet rate.

Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18225
This commit is contained in:
Andrew Rybchenko 2018-11-29 06:43:34 +00:00
parent 6da6b6c758
commit e0b3c2cc1a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=341194
3 changed files with 12 additions and 1 deletions
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2
sys/dev/sfxge/common/efsys.h
View File

@ -287,6 +287,8 @@ sfxge_map_mbuf_fast(bus_dma_tag_t tag, bus_dmamap_t map,
#define EFSYS_OPT_TUNNEL 0
#define EFSYS_OPT_FW_SUBVARIANT_AWARE 0
/* ID */
typedef struct __efsys_identifier_s efsys_identifier_t;

7
sys/dev/sfxge/common/efx_check.h
View File

@ -377,4 +377,11 @@
# endif
#endif /* EFSYS_OPT_TUNNEL */
#if EFSYS_OPT_FW_SUBVARIANT_AWARE
/* Advertise that the driver is firmware subvariant aware */
# if !(EFSYS_OPT_MEDFORD2)
# error "FW_SUBVARIANT_AWARE requires MEDFORD2"
# endif
#endif
#endif /* _SYS_EFX_CHECK_H */

4
sys/dev/sfxge/common/efx_mcdi.c
View File

@ -1303,7 +1303,9 @@ efx_mcdi_drv_attach(
* FULL_FEATURED datapath firmware type first and fall backs to
* DONT_CARE datapath firmware type if MC_CMD_DRV_ATTACH fails.
*/
MCDI_IN_SET_DWORD(req, DRV_ATTACH_IN_NEW_STATE, attach ? 1 : 0);
MCDI_IN_POPULATE_DWORD_2(req, DRV_ATTACH_IN_NEW_STATE,
DRV_ATTACH_IN_ATTACH, attach ? 1 : 0,
DRV_ATTACH_IN_SUBVARIANT_AWARE, EFSYS_OPT_FW_SUBVARIANT_AWARE);
MCDI_IN_SET_DWORD(req, DRV_ATTACH_IN_UPDATE, 1);
MCDI_IN_SET_DWORD(req, DRV_ATTACH_IN_FIRMWARE_ID, enp->efv);