Date: Thu, 24 Oct 1996 23:43:14 -0700 (PDT) From: "Justin T. Gibbs" <gibbs> To: CVS-committers, cvs-all, cvs-sys Subject: cvs commit: src/sys/i386/scsi 93cx6.c 93cx6.h aic7xxx.c aic7xxx.h src/sys/dev/aic7xxx aic7xxx.seq aic7xxx_reg.h src/sys/i386/eisa aic7770.c src/sys/pci aic7870.c Message-ID: <199610250643.XAA27930@freefall.freebsd.org>
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gibbs 96/10/24 23:43:13
Modified: sys/dev/aic7xxx aic7xxx.seq aic7xxx_reg.h
Log:
Go back to using DMA to get SCBs down to the adapter.
SCB paging is now handled almost entirely by the sequencer and also uses
DMA. This should make SCB paging at least an order of magnitude more
efficient and vastly simplifies the implementation.
Add a few space optimizations so this code still fits on aic7770 chips.
Update comments.
Revision Changes Path
1.44 +413 -301 src/sys/dev/aic7xxx/aic7xxx.seq
1.14 +71 -54 src/sys/dev/aic7xxx/aic7xxx_reg.h
Modified: sys/i386/eisa aic7770.c
Log:
KNF cleanup.
Update to handle new arg to ahc_alloc.
Revision Changes Path
1.33 +64 -64 src/sys/i386/eisa/aic7770.c
Modified: sys/i386/scsi 93cx6.c 93cx6.h aic7xxx.c aic7xxx.h
Log:
- KNF cleanup.
- Add support for memory mapped I/O.
- Use DMA to get SCBs down to the adapters.
- Remove old paging code.
- Be much smarter about how we allocate SCB space. The old, simple method
wasted almost half a page per SCB. Ooops.
- Make command complete interrupt processing more efficient.
- Break the monolithic ahc_intr into sub-routines. The sub-routines handle
rare, special case events so the function call is not a penalty and the
removal of the code from the main routine most likely improves performance
instruction prefech will work better and less code is pushed into the cache.
- Never, ever allow tagged queueing if a device has disconnection disabled.
- Clean up and simplify timeout code. Many of the changes are to handle the
new DMA scheme.
Revision Changes Path
1.6 +4 -3 src/sys/i386/scsi/93cx6.c
1.4 +13 -5 src/sys/i386/scsi/93cx6.h
1.80 +999 -1376 src/sys/i386/scsi/aic7xxx.c
1.30 +91 -80 src/sys/i386/scsi/aic7xxx.h
Modified: sys/pci aic7870.c
Log:
- KNF cleanup.
- Add support for memory mapped I/O.
Revision Changes Path
1.40 +143 -170 src/sys/pci/aic7870.c
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