#
1.15 |
|
07-Aug-2021 |
thorpej |
Merge thorpej-cfargs2.
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Revision tags: thorpej-futex2-base thorpej-cfargs2-base cjep_sun2x-base1 cjep_sun2x-base cjep_staticlib_x-base1 cjep_staticlib_x-base thorpej-i2c-spi-conf-base
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#
1.14 |
|
24-Apr-2021 |
thorpej |
branches: 1.14.2; 1.14.8; Merge thorpej-cfargs branch:
Simplify and make extensible the config_search() / config_found() / config_attach() interfaces: rather than having different variants for which arguments you want pass along, just have a single call that takes a variadic list of tag-value arguments.
Adjust all call sites: - Simplify wherever possible; don't pass along arguments that aren't actually needed. - Don't be explicit about what interface attribute is attaching if the device only has one. (More simplification.) - Add a config_probe() function to be used in indirect configuiration situations, making is visibly easier to see when indirect config is in play, and allowing for future change in semantics. (As of now, this is just a wrapper around config_match(), but that is an implementation detail.)
Remove unnecessary or redundant interface attributes where they're not needed.
There are currently 5 "cfargs" defined: - CFARG_SUBMATCH (submatch function for direct config) - CFARG_SEARCH (search function for indirect config) - CFARG_IATTR (interface attribte) - CFARG_LOCATORS (locators array) - CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)
...and a sentinel value CFARG_EOL.
Add some extra sanity checking to ensure that interface attributes aren't ambiguous.
Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark ports to associate those device handles with device_t instance. This will trickle trough to more places over time (need back-end for pre-OFW Sun OBP; any others?).
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Revision tags: thorpej-cfargs-base thorpej-futex-base
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#
1.13 |
|
04-Jan-2021 |
thorpej |
branches: 1.13.2; malloc(9) -> kmem(9)
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Revision tags: bouyer-xenpvh-base2 phil-wifi-20200421 bouyer-xenpvh-base1 phil-wifi-20200411 bouyer-xenpvh-base is-mlppp-base phil-wifi-20200406 ad-namecache-base3 ad-namecache-base2 ad-namecache-base1 ad-namecache-base phil-wifi-20191119
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#
1.12 |
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13-Aug-2019 |
tnn |
branches: 1.12.8; ensure spibus_attach_args is zero'ed
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Revision tags: netbsd-9-2-RELEASE netbsd-9-1-RELEASE netbsd-9-0-RELEASE netbsd-9-0-RC2 netbsd-9-0-RC1 netbsd-9-base phil-wifi-20190609 isaki-audio2-base pgoyette-compat-20190127 pgoyette-compat-20190118 pgoyette-compat-1226 pgoyette-compat-1126 pgoyette-compat-1020 pgoyette-compat-0930 pgoyette-compat-0906
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#
1.11 |
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03-Sep-2018 |
riastradh |
Rename min/max -> uimin/uimax for better honesty.
These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended.
HOWEVER! Some subsystems have
#define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b))
even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation.
To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it.
I have left a handful of bootloaders that are too annoying to compile-test, and some dead code:
cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4))
It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them.
Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
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Revision tags: netbsd-8-2-RELEASE netbsd-8-1-RELEASE netbsd-8-1-RC1 netbsd-7-2-RELEASE pgoyette-compat-0728 netbsd-8-0-RELEASE phil-wifi-base pgoyette-compat-0625 netbsd-8-0-RC2 pgoyette-compat-0521 pgoyette-compat-0502 pgoyette-compat-0422 netbsd-8-0-RC1 pgoyette-compat-0415 pgoyette-compat-0407 pgoyette-compat-0330 pgoyette-compat-0322 pgoyette-compat-0315 netbsd-7-1-2-RELEASE pgoyette-compat-base netbsd-7-1-1-RELEASE tls-maxphys-base-20171202 matt-nb8-mediatek-base nick-nhusb-base-20170825 perseant-stdc-iso10646-base netbsd-8-base prg-localcount2-base3 prg-localcount2-base2 prg-localcount2-base1 prg-localcount2-base pgoyette-localcount-20170426 bouyer-socketcan-base1 jdolecek-ncq-base pgoyette-localcount-20170320 netbsd-7-1-RELEASE netbsd-7-1-RC2 nick-nhusb-base-20170204 netbsd-7-nhusb-base-20170116 bouyer-socketcan-base pgoyette-localcount-20170107 netbsd-7-1-RC1 nick-nhusb-base-20161204 pgoyette-localcount-20161104 netbsd-7-0-2-RELEASE nick-nhusb-base-20161004 localcount-20160914 netbsd-7-nhusb-base pgoyette-localcount-20160806 pgoyette-localcount-20160726 pgoyette-localcount-base nick-nhusb-base-20160907 nick-nhusb-base-20160529 netbsd-7-0-1-RELEASE nick-nhusb-base-20160422 nick-nhusb-base-20160319 nick-nhusb-base-20151226 netbsd-7-0-RELEASE nick-nhusb-base-20150921 netbsd-7-0-RC3 netbsd-7-0-RC2 netbsd-7-0-RC1 nick-nhusb-base-20150606 nick-nhusb-base-20150406 nick-nhusb-base netbsd-7-base yamt-pagecache-base9 tls-earlyentropy-base riastradh-xf86-video-intel-2-7-1-pre-2-21-15 riastradh-drm2-base3 rmind-smpnet-nbase riastradh-drm2-base2 riastradh-drm2-base1 riastradh-drm2-base rmind-smpnet-base agc-symver-base yamt-pagecache-base8 yamt-pagecache-base7 yamt-pagecache-base6 tls-maxphys-base
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#
1.10 |
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27-Oct-2012 |
chs |
branches: 1.10.36; 1.10.38; split device_t/softc for all remaining drivers. replace "struct device *" with "device_t". use device_xname(), device_unit(), etc.
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Revision tags: netbsd-6-0-6-RELEASE netbsd-6-1-5-RELEASE netbsd-6-1-4-RELEASE netbsd-6-0-5-RELEASE netbsd-6-1-3-RELEASE netbsd-6-0-4-RELEASE netbsd-6-1-2-RELEASE netbsd-6-0-3-RELEASE netbsd-6-1-1-RELEASE netbsd-6-0-2-RELEASE netbsd-6-1-RELEASE netbsd-6-1-RC4 netbsd-6-1-RC3 netbsd-6-1-RC2 netbsd-6-1-RC1 netbsd-6-0-1-RELEASE matt-nb6-plus-nbase netbsd-6-0-RELEASE netbsd-6-0-RC2 matt-nb6-plus-base netbsd-6-0-RC1 jmcneill-usbmp-base10 yamt-pagecache-base5 jmcneill-usbmp-base9 yamt-pagecache-base4 jmcneill-usbmp-base8 jmcneill-usbmp-base7 jmcneill-usbmp-base6 jmcneill-usbmp-base5 jmcneill-usbmp-base4 jmcneill-usbmp-base3 jmcneill-usbmp-pre-base2 jmcneill-usbmp-base2 netbsd-6-base jmcneill-usbmp-base jmcneill-audiomp3-base yamt-pagecache-base3 yamt-pagecache-base2 yamt-pagecache-base
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#
1.9 |
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10-Jul-2011 |
matt |
branches: 1.9.2; 1.9.12; Cleanup machine includes
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#
1.8 |
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07-Jul-2011 |
matt |
Revamp / rework the Atheros MIPS SoC support. Add initial support for the AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use of -mips32 for all Atheros kernels. Make code much more common.
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#
1.7 |
|
01-Jul-2011 |
dyoung |
#include <sys/bus.h> instead of <machine/bus.h>.
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Revision tags: rmind-uvmplock-nbase rmind-uvmplock-base
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#
1.6 |
|
08-Jun-2011 |
rmind |
- Use IPL_BIO (instead of IPL_SERIAL) for SPI. - Convert simple_lock/ltsleep to mutex/condvar.
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Revision tags: netbsd-5-2-3-RELEASE netbsd-5-1-5-RELEASE netbsd-5-2-2-RELEASE netbsd-5-1-4-RELEASE netbsd-5-2-1-RELEASE netbsd-5-1-3-RELEASE netbsd-5-2-RELEASE netbsd-5-2-RC1 netbsd-5-1-2-RELEASE netbsd-5-1-1-RELEASE cherry-xenmp-base jym-xensuspend-nbase uebayasi-xip-base7 bouyer-quota2-nbase bouyer-quota2-base jruoho-x86intr-base matt-mips64-premerge-20101231 matt-nb5-mips64-premerge-20101231 matt-nb5-pq3-base uebayasi-xip-base6 uebayasi-xip-base5 netbsd-5-1-RELEASE uebayasi-xip-base4 uebayasi-xip-base3 yamt-nfs-mp-base11 netbsd-5-1-RC4 matt-nb5-mips64-k15 uebayasi-xip-base2 yamt-nfs-mp-base10 netbsd-5-1-RC3 netbsd-5-1-RC2 uebayasi-xip-base1 netbsd-5-1-RC1 yamt-nfs-mp-base9 uebayasi-xip-base netbsd-5-0-2-RELEASE matt-nb5-mips64-premerge-20091211 matt-premerge-20091211 yamt-nfs-mp-base8 matt-nb5-mips64-u2-k2-k4-k7-k8-k9 matt-nb4-mips64-k7-u2a-k9b matt-nb5-mips64-u1-k1-k5 yamt-nfs-mp-base7 netbsd-5-0-1-RELEASE jymxensuspend-base yamt-nfs-mp-base6 yamt-nfs-mp-base5 yamt-nfs-mp-base4 yamt-nfs-mp-base3 nick-hppapmap-base4 nick-hppapmap-base3 netbsd-5-0-RELEASE netbsd-5-0-RC4 netbsd-5-0-RC3 nick-hppapmap-base2 netbsd-5-0-RC2 jym-xensuspend-base netbsd-5-0-RC1 haad-dm-base2 haad-nbase2 ad-audiomp2-base netbsd-5-base nick-hppapmap-base matt-mips64-base2 haad-dm-base1 wrstuden-revivesa-base-4 wrstuden-revivesa-base-3 wrstuden-revivesa-base-2 nick-csl-alignment-base5 haad-dm-base wrstuden-revivesa-base-1 simonb-wapbl-nbase yamt-pf42-base4 simonb-wapbl-base yamt-pf42-base3 hpcarm-cleanup-nbase yamt-pf42-baseX yamt-pf42-base2 yamt-nfs-mp-base2 wrstuden-revivesa-base yamt-nfs-mp-base yamt-pf42-base ad-socklock-base1 yamt-lazymbuf-base15 yamt-lazymbuf-base14 keiichi-mipv6-nbase mjf-devfs2-base nick-net80211-sync-base keiichi-mipv6-base bouyer-xeni386-merge1 matt-armv6-prevmlocking vmlocking2-base3 bouyer-xeni386-nbase yamt-kmem-base3 cube-autoconf-base yamt-kmem-base2 bouyer-xeni386-base yamt-kmem-base vmlocking2-base2 reinoud-bufcleanup-nbase vmlocking2-base1 matt-armv6-nbase jmcneill-base mjf-devfs-base bouyer-xenamd64-base2 vmlocking-nbase yamt-x86pmap-base4 bouyer-xenamd64-base yamt-x86pmap-base3 yamt-x86pmap-base2 yamt-x86pmap-base matt-armv6-base jmcneill-pm-base hpcarm-cleanup-base nick-csl-alignment-base matt-mips64-base yamt-idlelwp-base8 ppcoea-renovation-base thorpej-atomic-base reinoud-bufcleanup-base mjf-ufs-trans-base vmlocking-base
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#
1.5 |
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28-Feb-2007 |
thorpej |
branches: 1.5.66; 1.5.76; TRUE -> true, FALSE -> false
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Revision tags: ad-audiomp-base
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#
1.4 |
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21-Feb-2007 |
thorpej |
Replace the Mach-derived boolean_t type with the C99 bool type. A future commit will replace use of TRUE and FALSE with true and false.
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Revision tags: post-newlock2-merge newlock2-nbase newlock2-base
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#
1.3 |
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25-Dec-2006 |
wiz |
branches: 1.3.2; 1.3.4; Spell "separate" correctly. From Zafer Aydogan.
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Revision tags: netbsd-4-0-1-RELEASE wrstuden-fixsa-newbase wrstuden-fixsa-base-1 netbsd-4-0-RELEASE netbsd-4-0-RC5 matt-nb4-arm-base netbsd-4-0-RC4 netbsd-4-0-RC3 netbsd-4-0-RC2 netbsd-4-0-RC1 wrstuden-fixsa-base yamt-splraiseipl-base5 yamt-splraiseipl-base4 yamt-splraiseipl-base3 netbsd-4-base yamt-splraiseipl-base2
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#
1.2 |
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20-Oct-2006 |
gdamore |
branches: 1.2.2; 1.2.4; This commit provides substantial fixes and functionality for SPI flash.
Specifically, the SPI flash now operates as a nearly fully functional block device (other than lacking disklabel support). It does some basic translation stuff, so that if you attempt to write a block, the underlying flash sectors (usually 64k in size) will be read, erased and rewritten.
To minize thrashing, the spiflash strategy routine attempts to gather writes to the same sector together, so that in the typical case you will not have to repeatedly erase/rewrite the sector. It also attempts to check and verify whether an erase cycle is truly needed. There are still access patterns that will cause multiple erases to occur, and so I heartily discourage the use of these flash devices for storing anything other than small configuration data, or write-once images. If you want to do more than that, then someone should try to write a real flash translation layer.
The drivers attempt to provide some level of asynchronous operation, so that while you are erasing or writing to the flash, other things can reasonably take place.
Note that spiflash does not do bad block remapping. It also doesn't detect when a device is in read-only mode, or if some sectors are read-only. It only supports uniform sectored NOR flash. It lacks any code to deal with disklabels, and does not offer any disk related ioctls.
These limitations aside, it would not be terribly hard, I think, to break out the code I've done to create a generic "norflash" driver, backed by a "common" spiflash module. Then other flash drivers (e.g. athflash, etc.) could benefit from the ability to use this as a block device. I've tried to architect it to support that, if someone else wants to do the work. (Hi Jared!)
The primary reason that I've not added code to deal with disklabels is that I had a difficult time figuring out which framework (disklabels or wedges) to use, and which bits of code were necessary to implement. In the case of the flash devices I'm working with, a parser to deal with redboot FIS images (partitions) would need to be added. I was prepared to do this, but gave up owing to the complete and total lack of any API or design documentation pertaining to the requirements for disk drivers and disklabel management or wedges. I would strongly encourage someone who knows something about wedges or disklabels to write a simple document (or even a dummy driver) showing which interfaces should be provided in new mass storage drivers.
This work was funded by the Champaign-Urbana Community Wireless Network Project.
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#
1.1 |
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07-Oct-2006 |
gdamore |
Add Atheros SPI controller. This is a "pseudo-controller", as it has some artificial limitations which really only make it good for use with serial flash devices. One of the more annoying limitations is a restriction that it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)
The driver includes design to work around those limitations, but these changes are only appropriate for serial flash devices.
This driver is designed to run in interrupt driven mode, but due to lack of adequate documentation, we run it in polled mode.
A subsequent commit will introduce the MI M25P flash driver, which has been tested and is known to function somewhat reasonably..
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#
1.14 |
|
24-Apr-2021 |
thorpej |
Merge thorpej-cfargs branch:
Simplify and make extensible the config_search() / config_found() / config_attach() interfaces: rather than having different variants for which arguments you want pass along, just have a single call that takes a variadic list of tag-value arguments.
Adjust all call sites: - Simplify wherever possible; don't pass along arguments that aren't actually needed. - Don't be explicit about what interface attribute is attaching if the device only has one. (More simplification.) - Add a config_probe() function to be used in indirect configuiration situations, making is visibly easier to see when indirect config is in play, and allowing for future change in semantics. (As of now, this is just a wrapper around config_match(), but that is an implementation detail.)
Remove unnecessary or redundant interface attributes where they're not needed.
There are currently 5 "cfargs" defined: - CFARG_SUBMATCH (submatch function for direct config) - CFARG_SEARCH (search function for indirect config) - CFARG_IATTR (interface attribte) - CFARG_LOCATORS (locators array) - CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)
...and a sentinel value CFARG_EOL.
Add some extra sanity checking to ensure that interface attributes aren't ambiguous.
Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark ports to associate those device handles with device_t instance. This will trickle trough to more places over time (need back-end for pre-OFW Sun OBP; any others?).
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Revision tags: thorpej-cfargs-base thorpej-futex-base
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#
1.13 |
|
04-Jan-2021 |
thorpej |
branches: 1.13.2; malloc(9) -> kmem(9)
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Revision tags: bouyer-xenpvh-base2 phil-wifi-20200421 bouyer-xenpvh-base1 phil-wifi-20200411 bouyer-xenpvh-base is-mlppp-base phil-wifi-20200406 ad-namecache-base3 ad-namecache-base2 ad-namecache-base1 ad-namecache-base phil-wifi-20191119
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#
1.12 |
|
13-Aug-2019 |
tnn |
branches: 1.12.8; ensure spibus_attach_args is zero'ed
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Revision tags: netbsd-9-1-RELEASE netbsd-9-0-RELEASE netbsd-9-0-RC2 netbsd-9-0-RC1 netbsd-9-base phil-wifi-20190609 isaki-audio2-base pgoyette-compat-20190127 pgoyette-compat-20190118 pgoyette-compat-1226 pgoyette-compat-1126 pgoyette-compat-1020 pgoyette-compat-0930 pgoyette-compat-0906
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#
1.11 |
|
03-Sep-2018 |
riastradh |
Rename min/max -> uimin/uimax for better honesty.
These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended.
HOWEVER! Some subsystems have
#define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b))
even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation.
To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it.
I have left a handful of bootloaders that are too annoying to compile-test, and some dead code:
cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4))
It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them.
Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
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Revision tags: netbsd-8-2-RELEASE netbsd-8-1-RELEASE netbsd-8-1-RC1 netbsd-7-2-RELEASE pgoyette-compat-0728 netbsd-8-0-RELEASE phil-wifi-base pgoyette-compat-0625 netbsd-8-0-RC2 pgoyette-compat-0521 pgoyette-compat-0502 pgoyette-compat-0422 netbsd-8-0-RC1 pgoyette-compat-0415 pgoyette-compat-0407 pgoyette-compat-0330 pgoyette-compat-0322 pgoyette-compat-0315 netbsd-7-1-2-RELEASE pgoyette-compat-base netbsd-7-1-1-RELEASE tls-maxphys-base-20171202 matt-nb8-mediatek-base nick-nhusb-base-20170825 perseant-stdc-iso10646-base netbsd-8-base prg-localcount2-base3 prg-localcount2-base2 prg-localcount2-base1 prg-localcount2-base pgoyette-localcount-20170426 bouyer-socketcan-base1 jdolecek-ncq-base pgoyette-localcount-20170320 netbsd-7-1-RELEASE netbsd-7-1-RC2 nick-nhusb-base-20170204 netbsd-7-nhusb-base-20170116 bouyer-socketcan-base pgoyette-localcount-20170107 netbsd-7-1-RC1 nick-nhusb-base-20161204 pgoyette-localcount-20161104 netbsd-7-0-2-RELEASE nick-nhusb-base-20161004 localcount-20160914 netbsd-7-nhusb-base pgoyette-localcount-20160806 pgoyette-localcount-20160726 pgoyette-localcount-base nick-nhusb-base-20160907 nick-nhusb-base-20160529 netbsd-7-0-1-RELEASE nick-nhusb-base-20160422 nick-nhusb-base-20160319 nick-nhusb-base-20151226 netbsd-7-0-RELEASE nick-nhusb-base-20150921 netbsd-7-0-RC3 netbsd-7-0-RC2 netbsd-7-0-RC1 nick-nhusb-base-20150606 nick-nhusb-base-20150406 nick-nhusb-base netbsd-7-base yamt-pagecache-base9 tls-earlyentropy-base riastradh-xf86-video-intel-2-7-1-pre-2-21-15 riastradh-drm2-base3 rmind-smpnet-nbase riastradh-drm2-base2 riastradh-drm2-base1 riastradh-drm2-base rmind-smpnet-base agc-symver-base yamt-pagecache-base8 yamt-pagecache-base7 yamt-pagecache-base6 tls-maxphys-base
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#
1.10 |
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27-Oct-2012 |
chs |
branches: 1.10.36; 1.10.38; split device_t/softc for all remaining drivers. replace "struct device *" with "device_t". use device_xname(), device_unit(), etc.
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Revision tags: netbsd-6-0-6-RELEASE netbsd-6-1-5-RELEASE netbsd-6-1-4-RELEASE netbsd-6-0-5-RELEASE netbsd-6-1-3-RELEASE netbsd-6-0-4-RELEASE netbsd-6-1-2-RELEASE netbsd-6-0-3-RELEASE netbsd-6-1-1-RELEASE netbsd-6-0-2-RELEASE netbsd-6-1-RELEASE netbsd-6-1-RC4 netbsd-6-1-RC3 netbsd-6-1-RC2 netbsd-6-1-RC1 netbsd-6-0-1-RELEASE matt-nb6-plus-nbase netbsd-6-0-RELEASE netbsd-6-0-RC2 matt-nb6-plus-base netbsd-6-0-RC1 jmcneill-usbmp-base10 yamt-pagecache-base5 jmcneill-usbmp-base9 yamt-pagecache-base4 jmcneill-usbmp-base8 jmcneill-usbmp-base7 jmcneill-usbmp-base6 jmcneill-usbmp-base5 jmcneill-usbmp-base4 jmcneill-usbmp-base3 jmcneill-usbmp-pre-base2 jmcneill-usbmp-base2 netbsd-6-base jmcneill-usbmp-base jmcneill-audiomp3-base yamt-pagecache-base3 yamt-pagecache-base2 yamt-pagecache-base
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#
1.9 |
|
10-Jul-2011 |
matt |
branches: 1.9.2; 1.9.12; Cleanup machine includes
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#
1.8 |
|
07-Jul-2011 |
matt |
Revamp / rework the Atheros MIPS SoC support. Add initial support for the AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use of -mips32 for all Atheros kernels. Make code much more common.
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#
1.7 |
|
01-Jul-2011 |
dyoung |
#include <sys/bus.h> instead of <machine/bus.h>.
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Revision tags: rmind-uvmplock-nbase rmind-uvmplock-base
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#
1.6 |
|
08-Jun-2011 |
rmind |
- Use IPL_BIO (instead of IPL_SERIAL) for SPI. - Convert simple_lock/ltsleep to mutex/condvar.
|
Revision tags: netbsd-5-2-3-RELEASE netbsd-5-1-5-RELEASE netbsd-5-2-2-RELEASE netbsd-5-1-4-RELEASE netbsd-5-2-1-RELEASE netbsd-5-1-3-RELEASE netbsd-5-2-RELEASE netbsd-5-2-RC1 netbsd-5-1-2-RELEASE netbsd-5-1-1-RELEASE cherry-xenmp-base jym-xensuspend-nbase uebayasi-xip-base7 bouyer-quota2-nbase bouyer-quota2-base jruoho-x86intr-base matt-mips64-premerge-20101231 matt-nb5-mips64-premerge-20101231 matt-nb5-pq3-base uebayasi-xip-base6 uebayasi-xip-base5 netbsd-5-1-RELEASE uebayasi-xip-base4 uebayasi-xip-base3 yamt-nfs-mp-base11 netbsd-5-1-RC4 matt-nb5-mips64-k15 uebayasi-xip-base2 yamt-nfs-mp-base10 netbsd-5-1-RC3 netbsd-5-1-RC2 uebayasi-xip-base1 netbsd-5-1-RC1 yamt-nfs-mp-base9 uebayasi-xip-base netbsd-5-0-2-RELEASE matt-nb5-mips64-premerge-20091211 matt-premerge-20091211 yamt-nfs-mp-base8 matt-nb5-mips64-u2-k2-k4-k7-k8-k9 matt-nb4-mips64-k7-u2a-k9b matt-nb5-mips64-u1-k1-k5 yamt-nfs-mp-base7 netbsd-5-0-1-RELEASE jymxensuspend-base yamt-nfs-mp-base6 yamt-nfs-mp-base5 yamt-nfs-mp-base4 yamt-nfs-mp-base3 nick-hppapmap-base4 nick-hppapmap-base3 netbsd-5-0-RELEASE netbsd-5-0-RC4 netbsd-5-0-RC3 nick-hppapmap-base2 netbsd-5-0-RC2 jym-xensuspend-base netbsd-5-0-RC1 haad-dm-base2 haad-nbase2 ad-audiomp2-base netbsd-5-base nick-hppapmap-base matt-mips64-base2 haad-dm-base1 wrstuden-revivesa-base-4 wrstuden-revivesa-base-3 wrstuden-revivesa-base-2 nick-csl-alignment-base5 haad-dm-base wrstuden-revivesa-base-1 simonb-wapbl-nbase yamt-pf42-base4 simonb-wapbl-base yamt-pf42-base3 hpcarm-cleanup-nbase yamt-pf42-baseX yamt-pf42-base2 yamt-nfs-mp-base2 wrstuden-revivesa-base yamt-nfs-mp-base yamt-pf42-base ad-socklock-base1 yamt-lazymbuf-base15 yamt-lazymbuf-base14 keiichi-mipv6-nbase mjf-devfs2-base nick-net80211-sync-base keiichi-mipv6-base bouyer-xeni386-merge1 matt-armv6-prevmlocking vmlocking2-base3 bouyer-xeni386-nbase yamt-kmem-base3 cube-autoconf-base yamt-kmem-base2 bouyer-xeni386-base yamt-kmem-base vmlocking2-base2 reinoud-bufcleanup-nbase vmlocking2-base1 matt-armv6-nbase jmcneill-base mjf-devfs-base bouyer-xenamd64-base2 vmlocking-nbase yamt-x86pmap-base4 bouyer-xenamd64-base yamt-x86pmap-base3 yamt-x86pmap-base2 yamt-x86pmap-base matt-armv6-base jmcneill-pm-base hpcarm-cleanup-base nick-csl-alignment-base matt-mips64-base yamt-idlelwp-base8 ppcoea-renovation-base thorpej-atomic-base reinoud-bufcleanup-base mjf-ufs-trans-base vmlocking-base
|
#
1.5 |
|
28-Feb-2007 |
thorpej |
branches: 1.5.66; 1.5.76; TRUE -> true, FALSE -> false
|
Revision tags: ad-audiomp-base
|
#
1.4 |
|
21-Feb-2007 |
thorpej |
Replace the Mach-derived boolean_t type with the C99 bool type. A future commit will replace use of TRUE and FALSE with true and false.
|
Revision tags: post-newlock2-merge newlock2-nbase newlock2-base
|
#
1.3 |
|
25-Dec-2006 |
wiz |
branches: 1.3.2; 1.3.4; Spell "separate" correctly. From Zafer Aydogan.
|
Revision tags: netbsd-4-0-1-RELEASE wrstuden-fixsa-newbase wrstuden-fixsa-base-1 netbsd-4-0-RELEASE netbsd-4-0-RC5 matt-nb4-arm-base netbsd-4-0-RC4 netbsd-4-0-RC3 netbsd-4-0-RC2 netbsd-4-0-RC1 wrstuden-fixsa-base yamt-splraiseipl-base5 yamt-splraiseipl-base4 yamt-splraiseipl-base3 netbsd-4-base yamt-splraiseipl-base2
|
#
1.2 |
|
20-Oct-2006 |
gdamore |
branches: 1.2.2; 1.2.4; This commit provides substantial fixes and functionality for SPI flash.
Specifically, the SPI flash now operates as a nearly fully functional block device (other than lacking disklabel support). It does some basic translation stuff, so that if you attempt to write a block, the underlying flash sectors (usually 64k in size) will be read, erased and rewritten.
To minize thrashing, the spiflash strategy routine attempts to gather writes to the same sector together, so that in the typical case you will not have to repeatedly erase/rewrite the sector. It also attempts to check and verify whether an erase cycle is truly needed. There are still access patterns that will cause multiple erases to occur, and so I heartily discourage the use of these flash devices for storing anything other than small configuration data, or write-once images. If you want to do more than that, then someone should try to write a real flash translation layer.
The drivers attempt to provide some level of asynchronous operation, so that while you are erasing or writing to the flash, other things can reasonably take place.
Note that spiflash does not do bad block remapping. It also doesn't detect when a device is in read-only mode, or if some sectors are read-only. It only supports uniform sectored NOR flash. It lacks any code to deal with disklabels, and does not offer any disk related ioctls.
These limitations aside, it would not be terribly hard, I think, to break out the code I've done to create a generic "norflash" driver, backed by a "common" spiflash module. Then other flash drivers (e.g. athflash, etc.) could benefit from the ability to use this as a block device. I've tried to architect it to support that, if someone else wants to do the work. (Hi Jared!)
The primary reason that I've not added code to deal with disklabels is that I had a difficult time figuring out which framework (disklabels or wedges) to use, and which bits of code were necessary to implement. In the case of the flash devices I'm working with, a parser to deal with redboot FIS images (partitions) would need to be added. I was prepared to do this, but gave up owing to the complete and total lack of any API or design documentation pertaining to the requirements for disk drivers and disklabel management or wedges. I would strongly encourage someone who knows something about wedges or disklabels to write a simple document (or even a dummy driver) showing which interfaces should be provided in new mass storage drivers.
This work was funded by the Champaign-Urbana Community Wireless Network Project.
|
#
1.1 |
|
07-Oct-2006 |
gdamore |
Add Atheros SPI controller. This is a "pseudo-controller", as it has some artificial limitations which really only make it good for use with serial flash devices. One of the more annoying limitations is a restriction that it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)
The driver includes design to work around those limitations, but these changes are only appropriate for serial flash devices.
This driver is designed to run in interrupt driven mode, but due to lack of adequate documentation, we run it in polled mode.
A subsequent commit will introduce the MI M25P flash driver, which has been tested and is known to function somewhat reasonably..
|
#
1.13 |
|
04-Jan-2021 |
thorpej |
malloc(9) -> kmem(9)
|
Revision tags: thorpej-futex-base bouyer-xenpvh-base2 phil-wifi-20200421 bouyer-xenpvh-base1 phil-wifi-20200411 bouyer-xenpvh-base is-mlppp-base phil-wifi-20200406 ad-namecache-base3 ad-namecache-base2 ad-namecache-base1 ad-namecache-base phil-wifi-20191119
|
#
1.12 |
|
13-Aug-2019 |
tnn |
ensure spibus_attach_args is zero'ed
|
Revision tags: netbsd-9-1-RELEASE netbsd-9-0-RELEASE netbsd-9-0-RC2 netbsd-9-0-RC1 netbsd-9-base phil-wifi-20190609 isaki-audio2-base pgoyette-compat-20190127 pgoyette-compat-20190118 pgoyette-compat-1226 pgoyette-compat-1126 pgoyette-compat-1020 pgoyette-compat-0930 pgoyette-compat-0906
|
#
1.11 |
|
03-Sep-2018 |
riastradh |
Rename min/max -> uimin/uimax for better honesty.
These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended.
HOWEVER! Some subsystems have
#define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b))
even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation.
To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it.
I have left a handful of bootloaders that are too annoying to compile-test, and some dead code:
cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4))
It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them.
Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
|
Revision tags: netbsd-8-2-RELEASE netbsd-8-1-RELEASE netbsd-8-1-RC1 netbsd-7-2-RELEASE pgoyette-compat-0728 netbsd-8-0-RELEASE phil-wifi-base pgoyette-compat-0625 netbsd-8-0-RC2 pgoyette-compat-0521 pgoyette-compat-0502 pgoyette-compat-0422 netbsd-8-0-RC1 pgoyette-compat-0415 pgoyette-compat-0407 pgoyette-compat-0330 pgoyette-compat-0322 pgoyette-compat-0315 netbsd-7-1-2-RELEASE pgoyette-compat-base netbsd-7-1-1-RELEASE tls-maxphys-base-20171202 matt-nb8-mediatek-base nick-nhusb-base-20170825 perseant-stdc-iso10646-base netbsd-8-base prg-localcount2-base3 prg-localcount2-base2 prg-localcount2-base1 prg-localcount2-base pgoyette-localcount-20170426 bouyer-socketcan-base1 jdolecek-ncq-base pgoyette-localcount-20170320 netbsd-7-1-RELEASE netbsd-7-1-RC2 nick-nhusb-base-20170204 netbsd-7-nhusb-base-20170116 bouyer-socketcan-base pgoyette-localcount-20170107 netbsd-7-1-RC1 nick-nhusb-base-20161204 pgoyette-localcount-20161104 netbsd-7-0-2-RELEASE nick-nhusb-base-20161004 localcount-20160914 netbsd-7-nhusb-base pgoyette-localcount-20160806 pgoyette-localcount-20160726 pgoyette-localcount-base nick-nhusb-base-20160907 nick-nhusb-base-20160529 netbsd-7-0-1-RELEASE nick-nhusb-base-20160422 nick-nhusb-base-20160319 nick-nhusb-base-20151226 netbsd-7-0-RELEASE nick-nhusb-base-20150921 netbsd-7-0-RC3 netbsd-7-0-RC2 netbsd-7-0-RC1 nick-nhusb-base-20150606 nick-nhusb-base-20150406 nick-nhusb-base netbsd-7-base yamt-pagecache-base9 tls-earlyentropy-base riastradh-xf86-video-intel-2-7-1-pre-2-21-15 riastradh-drm2-base3 rmind-smpnet-nbase riastradh-drm2-base2 riastradh-drm2-base1 riastradh-drm2-base rmind-smpnet-base agc-symver-base yamt-pagecache-base8 yamt-pagecache-base7 yamt-pagecache-base6 tls-maxphys-base
|
#
1.10 |
|
27-Oct-2012 |
chs |
branches: 1.10.36; 1.10.38; split device_t/softc for all remaining drivers. replace "struct device *" with "device_t". use device_xname(), device_unit(), etc.
|
Revision tags: netbsd-6-0-6-RELEASE netbsd-6-1-5-RELEASE netbsd-6-1-4-RELEASE netbsd-6-0-5-RELEASE netbsd-6-1-3-RELEASE netbsd-6-0-4-RELEASE netbsd-6-1-2-RELEASE netbsd-6-0-3-RELEASE netbsd-6-1-1-RELEASE netbsd-6-0-2-RELEASE netbsd-6-1-RELEASE netbsd-6-1-RC4 netbsd-6-1-RC3 netbsd-6-1-RC2 netbsd-6-1-RC1 netbsd-6-0-1-RELEASE matt-nb6-plus-nbase netbsd-6-0-RELEASE netbsd-6-0-RC2 matt-nb6-plus-base netbsd-6-0-RC1 jmcneill-usbmp-base10 yamt-pagecache-base5 jmcneill-usbmp-base9 yamt-pagecache-base4 jmcneill-usbmp-base8 jmcneill-usbmp-base7 jmcneill-usbmp-base6 jmcneill-usbmp-base5 jmcneill-usbmp-base4 jmcneill-usbmp-base3 jmcneill-usbmp-pre-base2 jmcneill-usbmp-base2 netbsd-6-base jmcneill-usbmp-base jmcneill-audiomp3-base yamt-pagecache-base3 yamt-pagecache-base2 yamt-pagecache-base
|
#
1.9 |
|
10-Jul-2011 |
matt |
branches: 1.9.2; 1.9.12; Cleanup machine includes
|
#
1.8 |
|
07-Jul-2011 |
matt |
Revamp / rework the Atheros MIPS SoC support. Add initial support for the AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use of -mips32 for all Atheros kernels. Make code much more common.
|
#
1.7 |
|
01-Jul-2011 |
dyoung |
#include <sys/bus.h> instead of <machine/bus.h>.
|
Revision tags: rmind-uvmplock-nbase rmind-uvmplock-base
|
#
1.6 |
|
08-Jun-2011 |
rmind |
- Use IPL_BIO (instead of IPL_SERIAL) for SPI. - Convert simple_lock/ltsleep to mutex/condvar.
|
Revision tags: netbsd-5-2-3-RELEASE netbsd-5-1-5-RELEASE netbsd-5-2-2-RELEASE netbsd-5-1-4-RELEASE netbsd-5-2-1-RELEASE netbsd-5-1-3-RELEASE netbsd-5-2-RELEASE netbsd-5-2-RC1 netbsd-5-1-2-RELEASE netbsd-5-1-1-RELEASE cherry-xenmp-base jym-xensuspend-nbase uebayasi-xip-base7 bouyer-quota2-nbase bouyer-quota2-base jruoho-x86intr-base matt-mips64-premerge-20101231 matt-nb5-mips64-premerge-20101231 matt-nb5-pq3-base uebayasi-xip-base6 uebayasi-xip-base5 netbsd-5-1-RELEASE uebayasi-xip-base4 uebayasi-xip-base3 yamt-nfs-mp-base11 netbsd-5-1-RC4 matt-nb5-mips64-k15 uebayasi-xip-base2 yamt-nfs-mp-base10 netbsd-5-1-RC3 netbsd-5-1-RC2 uebayasi-xip-base1 netbsd-5-1-RC1 yamt-nfs-mp-base9 uebayasi-xip-base netbsd-5-0-2-RELEASE matt-nb5-mips64-premerge-20091211 matt-premerge-20091211 yamt-nfs-mp-base8 matt-nb5-mips64-u2-k2-k4-k7-k8-k9 matt-nb4-mips64-k7-u2a-k9b matt-nb5-mips64-u1-k1-k5 yamt-nfs-mp-base7 netbsd-5-0-1-RELEASE jymxensuspend-base yamt-nfs-mp-base6 yamt-nfs-mp-base5 yamt-nfs-mp-base4 yamt-nfs-mp-base3 nick-hppapmap-base4 nick-hppapmap-base3 netbsd-5-0-RELEASE netbsd-5-0-RC4 netbsd-5-0-RC3 nick-hppapmap-base2 netbsd-5-0-RC2 jym-xensuspend-base netbsd-5-0-RC1 haad-dm-base2 haad-nbase2 ad-audiomp2-base netbsd-5-base nick-hppapmap-base matt-mips64-base2 haad-dm-base1 wrstuden-revivesa-base-4 wrstuden-revivesa-base-3 wrstuden-revivesa-base-2 nick-csl-alignment-base5 haad-dm-base wrstuden-revivesa-base-1 simonb-wapbl-nbase yamt-pf42-base4 simonb-wapbl-base yamt-pf42-base3 hpcarm-cleanup-nbase yamt-pf42-baseX yamt-pf42-base2 yamt-nfs-mp-base2 wrstuden-revivesa-base yamt-nfs-mp-base yamt-pf42-base ad-socklock-base1 yamt-lazymbuf-base15 yamt-lazymbuf-base14 keiichi-mipv6-nbase mjf-devfs2-base nick-net80211-sync-base keiichi-mipv6-base bouyer-xeni386-merge1 matt-armv6-prevmlocking vmlocking2-base3 bouyer-xeni386-nbase yamt-kmem-base3 cube-autoconf-base yamt-kmem-base2 bouyer-xeni386-base yamt-kmem-base vmlocking2-base2 reinoud-bufcleanup-nbase vmlocking2-base1 matt-armv6-nbase jmcneill-base mjf-devfs-base bouyer-xenamd64-base2 vmlocking-nbase yamt-x86pmap-base4 bouyer-xenamd64-base yamt-x86pmap-base3 yamt-x86pmap-base2 yamt-x86pmap-base matt-armv6-base jmcneill-pm-base hpcarm-cleanup-base nick-csl-alignment-base matt-mips64-base yamt-idlelwp-base8 ppcoea-renovation-base thorpej-atomic-base reinoud-bufcleanup-base mjf-ufs-trans-base vmlocking-base
|
#
1.5 |
|
28-Feb-2007 |
thorpej |
branches: 1.5.66; 1.5.76; TRUE -> true, FALSE -> false
|
Revision tags: ad-audiomp-base
|
#
1.4 |
|
21-Feb-2007 |
thorpej |
Replace the Mach-derived boolean_t type with the C99 bool type. A future commit will replace use of TRUE and FALSE with true and false.
|
Revision tags: post-newlock2-merge newlock2-nbase newlock2-base
|
#
1.3 |
|
25-Dec-2006 |
wiz |
branches: 1.3.2; 1.3.4; Spell "separate" correctly. From Zafer Aydogan.
|
Revision tags: netbsd-4-0-1-RELEASE wrstuden-fixsa-newbase wrstuden-fixsa-base-1 netbsd-4-0-RELEASE netbsd-4-0-RC5 matt-nb4-arm-base netbsd-4-0-RC4 netbsd-4-0-RC3 netbsd-4-0-RC2 netbsd-4-0-RC1 wrstuden-fixsa-base yamt-splraiseipl-base5 yamt-splraiseipl-base4 yamt-splraiseipl-base3 netbsd-4-base yamt-splraiseipl-base2
|
#
1.2 |
|
20-Oct-2006 |
gdamore |
branches: 1.2.2; 1.2.4; This commit provides substantial fixes and functionality for SPI flash.
Specifically, the SPI flash now operates as a nearly fully functional block device (other than lacking disklabel support). It does some basic translation stuff, so that if you attempt to write a block, the underlying flash sectors (usually 64k in size) will be read, erased and rewritten.
To minize thrashing, the spiflash strategy routine attempts to gather writes to the same sector together, so that in the typical case you will not have to repeatedly erase/rewrite the sector. It also attempts to check and verify whether an erase cycle is truly needed. There are still access patterns that will cause multiple erases to occur, and so I heartily discourage the use of these flash devices for storing anything other than small configuration data, or write-once images. If you want to do more than that, then someone should try to write a real flash translation layer.
The drivers attempt to provide some level of asynchronous operation, so that while you are erasing or writing to the flash, other things can reasonably take place.
Note that spiflash does not do bad block remapping. It also doesn't detect when a device is in read-only mode, or if some sectors are read-only. It only supports uniform sectored NOR flash. It lacks any code to deal with disklabels, and does not offer any disk related ioctls.
These limitations aside, it would not be terribly hard, I think, to break out the code I've done to create a generic "norflash" driver, backed by a "common" spiflash module. Then other flash drivers (e.g. athflash, etc.) could benefit from the ability to use this as a block device. I've tried to architect it to support that, if someone else wants to do the work. (Hi Jared!)
The primary reason that I've not added code to deal with disklabels is that I had a difficult time figuring out which framework (disklabels or wedges) to use, and which bits of code were necessary to implement. In the case of the flash devices I'm working with, a parser to deal with redboot FIS images (partitions) would need to be added. I was prepared to do this, but gave up owing to the complete and total lack of any API or design documentation pertaining to the requirements for disk drivers and disklabel management or wedges. I would strongly encourage someone who knows something about wedges or disklabels to write a simple document (or even a dummy driver) showing which interfaces should be provided in new mass storage drivers.
This work was funded by the Champaign-Urbana Community Wireless Network Project.
|
#
1.1 |
|
07-Oct-2006 |
gdamore |
Add Atheros SPI controller. This is a "pseudo-controller", as it has some artificial limitations which really only make it good for use with serial flash devices. One of the more annoying limitations is a restriction that it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)
The driver includes design to work around those limitations, but these changes are only appropriate for serial flash devices.
This driver is designed to run in interrupt driven mode, but due to lack of adequate documentation, we run it in polled mode.
A subsequent commit will introduce the MI M25P flash driver, which has been tested and is known to function somewhat reasonably..
|
#
1.12 |
|
13-Aug-2019 |
tnn |
ensure spibus_attach_args is zero'ed
|
Revision tags: netbsd-9-base phil-wifi-20190609 isaki-audio2-base pgoyette-compat-20190127 pgoyette-compat-20190118 pgoyette-compat-1226 pgoyette-compat-1126 pgoyette-compat-1020 pgoyette-compat-0930 pgoyette-compat-0906
|
#
1.11 |
|
03-Sep-2018 |
riastradh |
Rename min/max -> uimin/uimax for better honesty.
These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended.
HOWEVER! Some subsystems have
#define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b))
even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation.
To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it.
I have left a handful of bootloaders that are too annoying to compile-test, and some dead code:
cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4))
It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them.
Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
|
Revision tags: netbsd-8-1-RELEASE netbsd-8-1-RC1 netbsd-7-2-RELEASE pgoyette-compat-0728 netbsd-8-0-RELEASE phil-wifi-base pgoyette-compat-0625 netbsd-8-0-RC2 pgoyette-compat-0521 pgoyette-compat-0502 pgoyette-compat-0422 netbsd-8-0-RC1 pgoyette-compat-0415 pgoyette-compat-0407 pgoyette-compat-0330 pgoyette-compat-0322 pgoyette-compat-0315 netbsd-7-1-2-RELEASE pgoyette-compat-base netbsd-7-1-1-RELEASE tls-maxphys-base-20171202 matt-nb8-mediatek-base nick-nhusb-base-20170825 perseant-stdc-iso10646-base netbsd-8-base prg-localcount2-base3 prg-localcount2-base2 prg-localcount2-base1 prg-localcount2-base pgoyette-localcount-20170426 bouyer-socketcan-base1 jdolecek-ncq-base pgoyette-localcount-20170320 netbsd-7-1-RELEASE netbsd-7-1-RC2 nick-nhusb-base-20170204 netbsd-7-nhusb-base-20170116 bouyer-socketcan-base pgoyette-localcount-20170107 netbsd-7-1-RC1 nick-nhusb-base-20161204 pgoyette-localcount-20161104 netbsd-7-0-2-RELEASE nick-nhusb-base-20161004 localcount-20160914 netbsd-7-nhusb-base pgoyette-localcount-20160806 pgoyette-localcount-20160726 pgoyette-localcount-base nick-nhusb-base-20160907 nick-nhusb-base-20160529 netbsd-7-0-1-RELEASE nick-nhusb-base-20160422 nick-nhusb-base-20160319 nick-nhusb-base-20151226 netbsd-7-0-RELEASE nick-nhusb-base-20150921 netbsd-7-0-RC3 netbsd-7-0-RC2 netbsd-7-0-RC1 nick-nhusb-base-20150606 nick-nhusb-base-20150406 nick-nhusb-base netbsd-7-base yamt-pagecache-base9 tls-earlyentropy-base riastradh-xf86-video-intel-2-7-1-pre-2-21-15 riastradh-drm2-base3 rmind-smpnet-nbase riastradh-drm2-base2 riastradh-drm2-base1 riastradh-drm2-base rmind-smpnet-base agc-symver-base yamt-pagecache-base8 yamt-pagecache-base7 yamt-pagecache-base6 tls-maxphys-base
|
#
1.10 |
|
27-Oct-2012 |
chs |
branches: 1.10.36; 1.10.38; split device_t/softc for all remaining drivers. replace "struct device *" with "device_t". use device_xname(), device_unit(), etc.
|
Revision tags: netbsd-6-0-6-RELEASE netbsd-6-1-5-RELEASE netbsd-6-1-4-RELEASE netbsd-6-0-5-RELEASE netbsd-6-1-3-RELEASE netbsd-6-0-4-RELEASE netbsd-6-1-2-RELEASE netbsd-6-0-3-RELEASE netbsd-6-1-1-RELEASE netbsd-6-0-2-RELEASE netbsd-6-1-RELEASE netbsd-6-1-RC4 netbsd-6-1-RC3 netbsd-6-1-RC2 netbsd-6-1-RC1 netbsd-6-0-1-RELEASE matt-nb6-plus-nbase netbsd-6-0-RELEASE netbsd-6-0-RC2 matt-nb6-plus-base netbsd-6-0-RC1 jmcneill-usbmp-base10 yamt-pagecache-base5 jmcneill-usbmp-base9 yamt-pagecache-base4 jmcneill-usbmp-base8 jmcneill-usbmp-base7 jmcneill-usbmp-base6 jmcneill-usbmp-base5 jmcneill-usbmp-base4 jmcneill-usbmp-base3 jmcneill-usbmp-pre-base2 jmcneill-usbmp-base2 netbsd-6-base jmcneill-usbmp-base jmcneill-audiomp3-base yamt-pagecache-base3 yamt-pagecache-base2 yamt-pagecache-base
|
#
1.9 |
|
10-Jul-2011 |
matt |
branches: 1.9.2; 1.9.12; Cleanup machine includes
|
#
1.8 |
|
07-Jul-2011 |
matt |
Revamp / rework the Atheros MIPS SoC support. Add initial support for the AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use of -mips32 for all Atheros kernels. Make code much more common.
|
#
1.7 |
|
01-Jul-2011 |
dyoung |
#include <sys/bus.h> instead of <machine/bus.h>.
|
Revision tags: rmind-uvmplock-nbase rmind-uvmplock-base
|
#
1.6 |
|
08-Jun-2011 |
rmind |
- Use IPL_BIO (instead of IPL_SERIAL) for SPI. - Convert simple_lock/ltsleep to mutex/condvar.
|
Revision tags: netbsd-5-2-3-RELEASE netbsd-5-1-5-RELEASE netbsd-5-2-2-RELEASE netbsd-5-1-4-RELEASE netbsd-5-2-1-RELEASE netbsd-5-1-3-RELEASE netbsd-5-2-RELEASE netbsd-5-2-RC1 netbsd-5-1-2-RELEASE netbsd-5-1-1-RELEASE cherry-xenmp-base jym-xensuspend-nbase uebayasi-xip-base7 bouyer-quota2-nbase bouyer-quota2-base jruoho-x86intr-base matt-mips64-premerge-20101231 matt-nb5-mips64-premerge-20101231 matt-nb5-pq3-base uebayasi-xip-base6 uebayasi-xip-base5 netbsd-5-1-RELEASE uebayasi-xip-base4 uebayasi-xip-base3 yamt-nfs-mp-base11 netbsd-5-1-RC4 matt-nb5-mips64-k15 uebayasi-xip-base2 yamt-nfs-mp-base10 netbsd-5-1-RC3 netbsd-5-1-RC2 uebayasi-xip-base1 netbsd-5-1-RC1 yamt-nfs-mp-base9 uebayasi-xip-base netbsd-5-0-2-RELEASE matt-nb5-mips64-premerge-20091211 matt-premerge-20091211 yamt-nfs-mp-base8 matt-nb5-mips64-u2-k2-k4-k7-k8-k9 matt-nb4-mips64-k7-u2a-k9b matt-nb5-mips64-u1-k1-k5 yamt-nfs-mp-base7 netbsd-5-0-1-RELEASE jymxensuspend-base yamt-nfs-mp-base6 yamt-nfs-mp-base5 yamt-nfs-mp-base4 yamt-nfs-mp-base3 nick-hppapmap-base4 nick-hppapmap-base3 netbsd-5-0-RELEASE netbsd-5-0-RC4 netbsd-5-0-RC3 nick-hppapmap-base2 netbsd-5-0-RC2 jym-xensuspend-base netbsd-5-0-RC1 haad-dm-base2 haad-nbase2 ad-audiomp2-base netbsd-5-base nick-hppapmap-base matt-mips64-base2 haad-dm-base1 wrstuden-revivesa-base-4 wrstuden-revivesa-base-3 wrstuden-revivesa-base-2 nick-csl-alignment-base5 haad-dm-base wrstuden-revivesa-base-1 simonb-wapbl-nbase yamt-pf42-base4 simonb-wapbl-base yamt-pf42-base3 hpcarm-cleanup-nbase yamt-pf42-baseX yamt-pf42-base2 yamt-nfs-mp-base2 wrstuden-revivesa-base yamt-nfs-mp-base yamt-pf42-base ad-socklock-base1 yamt-lazymbuf-base15 yamt-lazymbuf-base14 keiichi-mipv6-nbase mjf-devfs2-base nick-net80211-sync-base keiichi-mipv6-base bouyer-xeni386-merge1 matt-armv6-prevmlocking vmlocking2-base3 bouyer-xeni386-nbase yamt-kmem-base3 cube-autoconf-base yamt-kmem-base2 bouyer-xeni386-base yamt-kmem-base vmlocking2-base2 reinoud-bufcleanup-nbase vmlocking2-base1 matt-armv6-nbase jmcneill-base mjf-devfs-base bouyer-xenamd64-base2 vmlocking-nbase yamt-x86pmap-base4 bouyer-xenamd64-base yamt-x86pmap-base3 yamt-x86pmap-base2 yamt-x86pmap-base matt-armv6-base jmcneill-pm-base hpcarm-cleanup-base nick-csl-alignment-base matt-mips64-base yamt-idlelwp-base8 ppcoea-renovation-base thorpej-atomic-base reinoud-bufcleanup-base mjf-ufs-trans-base vmlocking-base
|
#
1.5 |
|
28-Feb-2007 |
thorpej |
branches: 1.5.66; 1.5.76; TRUE -> true, FALSE -> false
|
Revision tags: ad-audiomp-base
|
#
1.4 |
|
21-Feb-2007 |
thorpej |
Replace the Mach-derived boolean_t type with the C99 bool type. A future commit will replace use of TRUE and FALSE with true and false.
|
Revision tags: post-newlock2-merge newlock2-nbase newlock2-base
|
#
1.3 |
|
25-Dec-2006 |
wiz |
branches: 1.3.2; 1.3.4; Spell "separate" correctly. From Zafer Aydogan.
|
Revision tags: netbsd-4-0-1-RELEASE wrstuden-fixsa-newbase wrstuden-fixsa-base-1 netbsd-4-0-RELEASE netbsd-4-0-RC5 matt-nb4-arm-base netbsd-4-0-RC4 netbsd-4-0-RC3 netbsd-4-0-RC2 netbsd-4-0-RC1 wrstuden-fixsa-base yamt-splraiseipl-base5 yamt-splraiseipl-base4 yamt-splraiseipl-base3 netbsd-4-base yamt-splraiseipl-base2
|
#
1.2 |
|
20-Oct-2006 |
gdamore |
branches: 1.2.2; 1.2.4; This commit provides substantial fixes and functionality for SPI flash.
Specifically, the SPI flash now operates as a nearly fully functional block device (other than lacking disklabel support). It does some basic translation stuff, so that if you attempt to write a block, the underlying flash sectors (usually 64k in size) will be read, erased and rewritten.
To minize thrashing, the spiflash strategy routine attempts to gather writes to the same sector together, so that in the typical case you will not have to repeatedly erase/rewrite the sector. It also attempts to check and verify whether an erase cycle is truly needed. There are still access patterns that will cause multiple erases to occur, and so I heartily discourage the use of these flash devices for storing anything other than small configuration data, or write-once images. If you want to do more than that, then someone should try to write a real flash translation layer.
The drivers attempt to provide some level of asynchronous operation, so that while you are erasing or writing to the flash, other things can reasonably take place.
Note that spiflash does not do bad block remapping. It also doesn't detect when a device is in read-only mode, or if some sectors are read-only. It only supports uniform sectored NOR flash. It lacks any code to deal with disklabels, and does not offer any disk related ioctls.
These limitations aside, it would not be terribly hard, I think, to break out the code I've done to create a generic "norflash" driver, backed by a "common" spiflash module. Then other flash drivers (e.g. athflash, etc.) could benefit from the ability to use this as a block device. I've tried to architect it to support that, if someone else wants to do the work. (Hi Jared!)
The primary reason that I've not added code to deal with disklabels is that I had a difficult time figuring out which framework (disklabels or wedges) to use, and which bits of code were necessary to implement. In the case of the flash devices I'm working with, a parser to deal with redboot FIS images (partitions) would need to be added. I was prepared to do this, but gave up owing to the complete and total lack of any API or design documentation pertaining to the requirements for disk drivers and disklabel management or wedges. I would strongly encourage someone who knows something about wedges or disklabels to write a simple document (or even a dummy driver) showing which interfaces should be provided in new mass storage drivers.
This work was funded by the Champaign-Urbana Community Wireless Network Project.
|
#
1.1 |
|
07-Oct-2006 |
gdamore |
Add Atheros SPI controller. This is a "pseudo-controller", as it has some artificial limitations which really only make it good for use with serial flash devices. One of the more annoying limitations is a restriction that it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)
The driver includes design to work around those limitations, but these changes are only appropriate for serial flash devices.
This driver is designed to run in interrupt driven mode, but due to lack of adequate documentation, we run it in polled mode.
A subsequent commit will introduce the MI M25P flash driver, which has been tested and is known to function somewhat reasonably..
|
Revision tags: isaki-audio2-base pgoyette-compat-20190127 pgoyette-compat-20190118 pgoyette-compat-1226 pgoyette-compat-1126 pgoyette-compat-1020 pgoyette-compat-0930 pgoyette-compat-0906
|
#
1.11 |
|
03-Sep-2018 |
riastradh |
Rename min/max -> uimin/uimax for better honesty.
These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended.
HOWEVER! Some subsystems have
#define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b))
even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation.
To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it.
I have left a handful of bootloaders that are too annoying to compile-test, and some dead code:
cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4))
It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them.
Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
|
Revision tags: netbsd-7-2-RELEASE pgoyette-compat-0728 netbsd-8-0-RELEASE phil-wifi-base pgoyette-compat-0625 netbsd-8-0-RC2 pgoyette-compat-0521 pgoyette-compat-0502 pgoyette-compat-0422 netbsd-8-0-RC1 pgoyette-compat-0415 pgoyette-compat-0407 pgoyette-compat-0330 pgoyette-compat-0322 pgoyette-compat-0315 netbsd-7-1-2-RELEASE pgoyette-compat-base netbsd-7-1-1-RELEASE tls-maxphys-base-20171202 matt-nb8-mediatek-base nick-nhusb-base-20170825 perseant-stdc-iso10646-base netbsd-8-base prg-localcount2-base3 prg-localcount2-base2 prg-localcount2-base1 prg-localcount2-base pgoyette-localcount-20170426 bouyer-socketcan-base1 jdolecek-ncq-base pgoyette-localcount-20170320 netbsd-7-1-RELEASE netbsd-7-1-RC2 nick-nhusb-base-20170204 netbsd-7-nhusb-base-20170116 bouyer-socketcan-base pgoyette-localcount-20170107 netbsd-7-1-RC1 nick-nhusb-base-20161204 pgoyette-localcount-20161104 netbsd-7-0-2-RELEASE nick-nhusb-base-20161004 localcount-20160914 netbsd-7-nhusb-base pgoyette-localcount-20160806 pgoyette-localcount-20160726 pgoyette-localcount-base nick-nhusb-base-20160907 nick-nhusb-base-20160529 netbsd-7-0-1-RELEASE nick-nhusb-base-20160422 nick-nhusb-base-20160319 nick-nhusb-base-20151226 netbsd-7-0-RELEASE nick-nhusb-base-20150921 netbsd-7-0-RC3 netbsd-7-0-RC2 netbsd-7-0-RC1 nick-nhusb-base-20150606 nick-nhusb-base-20150406 nick-nhusb-base netbsd-7-base yamt-pagecache-base9 tls-earlyentropy-base riastradh-xf86-video-intel-2-7-1-pre-2-21-15 riastradh-drm2-base3 rmind-smpnet-nbase riastradh-drm2-base2 riastradh-drm2-base1 riastradh-drm2-base rmind-smpnet-base agc-symver-base yamt-pagecache-base8 yamt-pagecache-base7 yamt-pagecache-base6 tls-maxphys-base
|
#
1.10 |
|
27-Oct-2012 |
chs |
branches: 1.10.36; split device_t/softc for all remaining drivers. replace "struct device *" with "device_t". use device_xname(), device_unit(), etc.
|
Revision tags: netbsd-6-0-6-RELEASE netbsd-6-1-5-RELEASE netbsd-6-1-4-RELEASE netbsd-6-0-5-RELEASE netbsd-6-1-3-RELEASE netbsd-6-0-4-RELEASE netbsd-6-1-2-RELEASE netbsd-6-0-3-RELEASE netbsd-6-1-1-RELEASE netbsd-6-0-2-RELEASE netbsd-6-1-RELEASE netbsd-6-1-RC4 netbsd-6-1-RC3 netbsd-6-1-RC2 netbsd-6-1-RC1 netbsd-6-0-1-RELEASE matt-nb6-plus-nbase netbsd-6-0-RELEASE netbsd-6-0-RC2 matt-nb6-plus-base netbsd-6-0-RC1 jmcneill-usbmp-base10 yamt-pagecache-base5 jmcneill-usbmp-base9 yamt-pagecache-base4 jmcneill-usbmp-base8 jmcneill-usbmp-base7 jmcneill-usbmp-base6 jmcneill-usbmp-base5 jmcneill-usbmp-base4 jmcneill-usbmp-base3 jmcneill-usbmp-pre-base2 jmcneill-usbmp-base2 netbsd-6-base jmcneill-usbmp-base jmcneill-audiomp3-base yamt-pagecache-base3 yamt-pagecache-base2 yamt-pagecache-base
|
#
1.9 |
|
10-Jul-2011 |
matt |
branches: 1.9.2; 1.9.12; Cleanup machine includes
|
#
1.8 |
|
07-Jul-2011 |
matt |
Revamp / rework the Atheros MIPS SoC support. Add initial support for the AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use of -mips32 for all Atheros kernels. Make code much more common.
|
#
1.7 |
|
01-Jul-2011 |
dyoung |
#include <sys/bus.h> instead of <machine/bus.h>.
|
Revision tags: rmind-uvmplock-nbase rmind-uvmplock-base
|
#
1.6 |
|
08-Jun-2011 |
rmind |
- Use IPL_BIO (instead of IPL_SERIAL) for SPI. - Convert simple_lock/ltsleep to mutex/condvar.
|
Revision tags: netbsd-5-2-3-RELEASE netbsd-5-1-5-RELEASE netbsd-5-2-2-RELEASE netbsd-5-1-4-RELEASE netbsd-5-2-1-RELEASE netbsd-5-1-3-RELEASE netbsd-5-2-RELEASE netbsd-5-2-RC1 netbsd-5-1-2-RELEASE netbsd-5-1-1-RELEASE cherry-xenmp-base jym-xensuspend-nbase uebayasi-xip-base7 bouyer-quota2-nbase bouyer-quota2-base jruoho-x86intr-base matt-mips64-premerge-20101231 matt-nb5-mips64-premerge-20101231 matt-nb5-pq3-base uebayasi-xip-base6 uebayasi-xip-base5 netbsd-5-1-RELEASE uebayasi-xip-base4 uebayasi-xip-base3 yamt-nfs-mp-base11 netbsd-5-1-RC4 matt-nb5-mips64-k15 uebayasi-xip-base2 yamt-nfs-mp-base10 netbsd-5-1-RC3 netbsd-5-1-RC2 uebayasi-xip-base1 netbsd-5-1-RC1 yamt-nfs-mp-base9 uebayasi-xip-base netbsd-5-0-2-RELEASE matt-nb5-mips64-premerge-20091211 matt-premerge-20091211 yamt-nfs-mp-base8 matt-nb5-mips64-u2-k2-k4-k7-k8-k9 matt-nb4-mips64-k7-u2a-k9b matt-nb5-mips64-u1-k1-k5 yamt-nfs-mp-base7 netbsd-5-0-1-RELEASE jymxensuspend-base yamt-nfs-mp-base6 yamt-nfs-mp-base5 yamt-nfs-mp-base4 yamt-nfs-mp-base3 nick-hppapmap-base4 nick-hppapmap-base3 netbsd-5-0-RELEASE netbsd-5-0-RC4 netbsd-5-0-RC3 nick-hppapmap-base2 netbsd-5-0-RC2 jym-xensuspend-base netbsd-5-0-RC1 haad-dm-base2 haad-nbase2 ad-audiomp2-base netbsd-5-base nick-hppapmap-base matt-mips64-base2 haad-dm-base1 wrstuden-revivesa-base-4 wrstuden-revivesa-base-3 wrstuden-revivesa-base-2 nick-csl-alignment-base5 haad-dm-base wrstuden-revivesa-base-1 simonb-wapbl-nbase yamt-pf42-base4 simonb-wapbl-base yamt-pf42-base3 hpcarm-cleanup-nbase yamt-pf42-baseX yamt-pf42-base2 yamt-nfs-mp-base2 wrstuden-revivesa-base yamt-nfs-mp-base yamt-pf42-base ad-socklock-base1 yamt-lazymbuf-base15 yamt-lazymbuf-base14 keiichi-mipv6-nbase mjf-devfs2-base nick-net80211-sync-base keiichi-mipv6-base bouyer-xeni386-merge1 matt-armv6-prevmlocking vmlocking2-base3 bouyer-xeni386-nbase yamt-kmem-base3 cube-autoconf-base yamt-kmem-base2 bouyer-xeni386-base yamt-kmem-base vmlocking2-base2 reinoud-bufcleanup-nbase vmlocking2-base1 matt-armv6-nbase jmcneill-base mjf-devfs-base bouyer-xenamd64-base2 vmlocking-nbase yamt-x86pmap-base4 bouyer-xenamd64-base yamt-x86pmap-base3 yamt-x86pmap-base2 yamt-x86pmap-base matt-armv6-base jmcneill-pm-base hpcarm-cleanup-base nick-csl-alignment-base matt-mips64-base yamt-idlelwp-base8 ppcoea-renovation-base thorpej-atomic-base reinoud-bufcleanup-base mjf-ufs-trans-base vmlocking-base
|
#
1.5 |
|
28-Feb-2007 |
thorpej |
branches: 1.5.66; 1.5.76; TRUE -> true, FALSE -> false
|
Revision tags: ad-audiomp-base
|
#
1.4 |
|
21-Feb-2007 |
thorpej |
Replace the Mach-derived boolean_t type with the C99 bool type. A future commit will replace use of TRUE and FALSE with true and false.
|
Revision tags: post-newlock2-merge newlock2-nbase newlock2-base
|
#
1.3 |
|
25-Dec-2006 |
wiz |
branches: 1.3.2; 1.3.4; Spell "separate" correctly. From Zafer Aydogan.
|
Revision tags: netbsd-4-0-1-RELEASE wrstuden-fixsa-newbase wrstuden-fixsa-base-1 netbsd-4-0-RELEASE netbsd-4-0-RC5 matt-nb4-arm-base netbsd-4-0-RC4 netbsd-4-0-RC3 netbsd-4-0-RC2 netbsd-4-0-RC1 wrstuden-fixsa-base yamt-splraiseipl-base5 yamt-splraiseipl-base4 yamt-splraiseipl-base3 netbsd-4-base yamt-splraiseipl-base2
|
#
1.2 |
|
20-Oct-2006 |
gdamore |
branches: 1.2.2; 1.2.4; This commit provides substantial fixes and functionality for SPI flash.
Specifically, the SPI flash now operates as a nearly fully functional block device (other than lacking disklabel support). It does some basic translation stuff, so that if you attempt to write a block, the underlying flash sectors (usually 64k in size) will be read, erased and rewritten.
To minize thrashing, the spiflash strategy routine attempts to gather writes to the same sector together, so that in the typical case you will not have to repeatedly erase/rewrite the sector. It also attempts to check and verify whether an erase cycle is truly needed. There are still access patterns that will cause multiple erases to occur, and so I heartily discourage the use of these flash devices for storing anything other than small configuration data, or write-once images. If you want to do more than that, then someone should try to write a real flash translation layer.
The drivers attempt to provide some level of asynchronous operation, so that while you are erasing or writing to the flash, other things can reasonably take place.
Note that spiflash does not do bad block remapping. It also doesn't detect when a device is in read-only mode, or if some sectors are read-only. It only supports uniform sectored NOR flash. It lacks any code to deal with disklabels, and does not offer any disk related ioctls.
These limitations aside, it would not be terribly hard, I think, to break out the code I've done to create a generic "norflash" driver, backed by a "common" spiflash module. Then other flash drivers (e.g. athflash, etc.) could benefit from the ability to use this as a block device. I've tried to architect it to support that, if someone else wants to do the work. (Hi Jared!)
The primary reason that I've not added code to deal with disklabels is that I had a difficult time figuring out which framework (disklabels or wedges) to use, and which bits of code were necessary to implement. In the case of the flash devices I'm working with, a parser to deal with redboot FIS images (partitions) would need to be added. I was prepared to do this, but gave up owing to the complete and total lack of any API or design documentation pertaining to the requirements for disk drivers and disklabel management or wedges. I would strongly encourage someone who knows something about wedges or disklabels to write a simple document (or even a dummy driver) showing which interfaces should be provided in new mass storage drivers.
This work was funded by the Champaign-Urbana Community Wireless Network Project.
|
#
1.1 |
|
07-Oct-2006 |
gdamore |
Add Atheros SPI controller. This is a "pseudo-controller", as it has some artificial limitations which really only make it good for use with serial flash devices. One of the more annoying limitations is a restriction that it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)
The driver includes design to work around those limitations, but these changes are only appropriate for serial flash devices.
This driver is designed to run in interrupt driven mode, but due to lack of adequate documentation, we run it in polled mode.
A subsequent commit will introduce the MI M25P flash driver, which has been tested and is known to function somewhat reasonably..
|