FreeBSD src
92931c12ff
aic7xxx.c: In ahc_handle_ign_wide_residue(): o Use SCB_XFERLEN_ODD SCB field to determine transfer "oddness" rather than the DATA_COUNT_ODD logic. SCB_XFERLEN_ODD is toggled on every ignore wide residue message so that multiple ignore wide residue messages for the same transaction are properly supported. o If the sg list has been exausted, the sequencer doesn't bother to update the residual data count since it is known to be zero. Perform the zeroing manually before calculating the remaining data count. o Ensure that SG_LIST_NULL is cleared in the residual sg pointer for "mid-transfer" ignore wide residue cases. o Use multibyte in/out macros instead of shifting/masking by hand. aic7xxx.h: Modify the SCB_GET_LUN() macro to mask the lun hardware SCB field with LID. This leaves two bits in the LUN field that can be used for other purposes. aic7xxx.reg: Change LID to be 0x3F. This is the maximum supported lun size for non-packetized SCSI. Map the top bit of the lun to SCB_XFERLEN_ODD. The host must set this bit whenever a transfer is an odd length. Remove the ODD_SEG bit field that was used to carry the odd transfer length information through the SG cache. This is obviated by SCB_XFERLEN_ODD field. Remove the DATA_COUNT_ODD scratch ram byte that was used dynamicaly compute data transfer oddness. This is obviated by SCB_XFERLEN_ODD field. aic7xxx.seq: Be more careful in our handling of the SCB_LUN field. It must be masked with LID if only lun information is desired. Remove all updates to the DATA_COUNT_ODD scratch ram field. Remove all uses of ODD_SEG. These two save quite a few sequencer instructions. Use SCB_XFERLEN_ODD to validate the end of transfer ignore wide residue message case. aic7xxx_inline.h: In ahc_queue_scb(), setup the SCB_XFERLEN_ODD field. Approved by: RE |
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| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| README | ||
| UPDATING | ||
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