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History log of /src/sys/arch/alpha/tc/tcasic.c
RevisionDateAuthorComments
 1.52  07-Aug-2021  thorpej Merge thorpej-cfargs2.
 1.51  07-May-2021  thorpej branches: 1.51.6;
Static'ify more symbols.
 1.50  24-Apr-2021  thorpej branches: 1.50.2;
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?).
 1.49  25-Sep-2020  thorpej branches: 1.49.4;
Changes to make interrupt {,dis}establish MP-safe on Alpha:
- Protect all of the system interrupt linkage with the cpu_lock mutex.
- Re-order some of the stores to the SCB vector table to make it safe
in the face of lockless interrupt dispatch.
- Add a framework for routing interrupts to specific CPUs. Interrupts
are still funneled only to the primary CPU, but that will change for
some systems soon. Ensure that interrupt handler lists are manipulated
only on the CPUs that handle that specific interrupt source. This required
a re-factor of the alpha_shared_intr_*() family of functions.
- Enable __HAVE_INTR_CONTROL, although interrupt redistribution is still
a no-op.
- Reduce code duplication in the Jenson direct-SCB interrupt handlers.
 1.48  22-Sep-2020  thorpej Changes to make MPSAFE interrupts work on Alpha:

- Remove the ipl argument to scb_set() and the associated array of
"mpsafe" booleans initialized based on the ipl. It was bogus
anyway; all IPL_{BIO,NET,TTY}, etc. values are aliases of IPL_VM,
and for all practical purposes, there is really only one device
interrrupt level on Alpha anyway. Intead, we now treat all dispatches
from the SCB vector table as MP-safe, and it is now the handler for
that vector who is responsible for acquiring the KERNEL_LOCK if needed.

- Update the direct interrupt vector handlers in jensenio and TURBOchannel
to acquire the KERNEL_LOCK.

- Introduce a new ALPHA_INTR_MPSAFE flag, and add a flags argument to
alpha_shared_intr_establish(). When it is set, indicate that the
handler is MP-safe. Update alpha_shared_intr_dispatch() to pay
attention and acquire the KERNEL_LOCK (or not) as indicated.

- Re-factor all of the PCI interrupt handling, providing "generic PCI"
"PCI interrupts through ISA IRQs" implementations to significantly
reduce code duplication. Supplement the PCI chipset tag with more
info to facilitate this, and make the PCI interrupt-related routines
take a pci_chipset_tag_t argument rather than a void * argument.

- Because PCI interrupts on KN8AE are dispatched directly from the
SCB, provide a wrapper for non-MPSAFE interrupt handlers that
acquires the KERNEL_LOCK.

- Change the pci_intr_handle_t type to be a struct rather than an
integer type in order to catch any direct use of it as a value.
Add a set of functions to interact with pci_intr_handle_t, including
setting interrupt flags.

- Implement pci_intr_setattr() so that the PCI_INTR_MPSAFE attribute
can be set on a pci_intr_handle_t.

- While I'm here, make all of the MI PCI back-end operations call
through real functions rather than hopping directly through function
pointers in the chipset tag.

This change looks a lot bigger than it really is because of the re-factor
in the plethora of model-specific PCI interrupt back-ends. The KN8AE,
KN300, and T2/T3/T4 (Sable) are largely un-changed.
 1.47  22-Jun-2017  flxd spelling (DEC called it "TURBOchannel")
 1.46  09-Jun-2017  flxd Make VAXstation 4000 TURBOchannel adaptor work.
PIO and IRQ tested on VS4000/60 and /96 with TC-USB (slhci) and PMAD-AA (le).
DMA is untested.
vax needs space to be mapped out, so memory space is pre-mapped for TC option
drivers not bus_space'ified yet, also providing custom bus_space methods for
this kludge.
 1.45  12-Dec-2016  flxd branches: 1.45.8;
Clean-up (remove redundant declarations, concentrate checks).
 1.44  06-Feb-2012  matt branches: 1.44.6; 1.44.24; 1.44.28;
Do a minor cleanup of alpha (this will make applying pullups post branching
easier).
u_int{8,16,32,64}_t -> uint{*}_t
Change all old-style definitions to C89 prototypes.
Whitespace cleanup.
Constification in db_disasm.c
 1.43  04-Jun-2011  tsutsui branches: 1.43.2; 1.43.6;
Split device_t/softc. pmax is tested on GXemul.
Compile test only for alpha and vax.

XXX: alpha/tc/tcasic.c calls tcattach() via config_found(9), but
XXX: pmax/tc/tcbus.c and vax/vsa/tc_vsbus.c calls tcattach() directly.
XXX: It looks horrible...
 1.42  14-Mar-2009  dsl branches: 1.42.4; 1.42.6; 1.42.10;
Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.41  14-Mar-2009  dsl Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.
 1.40  03-Dec-2007  ad branches: 1.40.18; 1.40.26; 1.40.32;
Interrupt handling changes, in discussion since February:

- Reduce available SPL levels for hardware devices to none, vm, sched, high.
- Acquire kernel_lock only for interrupts at IPL_VM.
- Implement threaded soft interrupts.
 1.39  01-Jan-2003  thorpej branches: 1.39.18; 1.39.60; 1.39.78; 1.39.80; 1.39.86;
Use aprint_normal() for cfprint routines.
 1.38  02-Oct-2002  thorpej Use CFATTACH_DECL().
 1.37  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.36  23-Aug-2001  nisimura branches: 1.36.2;
Add MX (PMAG-A), CX (PMAG-B), TX (PMAG-RO/PMAG[B]-J) TC framebuffer
supports. None of them has any acceleration capability.
 1.35  27-Jul-2001  thorpej Rework the interrupt code, shaving some cycles off in the process.
Rather than an "iointr" routine that decomposes a vector into an
IRQ, we maintain a vector table directly, hooking up each "iointr"
routine at the correct vector. This also allows us to hook device
interrupts up to specific vectors (c.f. Jensen).

We can shave even more cycles off, here, and I will, but it requires
some changes to the alpha_shared_intr stuff.
 1.34  04-Mar-2001  ad branches: 1.34.4;
Hook in px & pxg devices.
 1.33  22-Feb-2001  nisimura Add code segment for PMAGD, which is under development this moment.
 1.32  23-Dec-2000  tron Fix typo in last commit.
 1.31  22-Dec-2000  ad In tc_fb_cnattach(): match from a table, and add #ifdef'ed out glue for the
px/pxg devices.
 1.30  05-Jun-2000  thorpej Switch to the new `evcnt' mechanism for counting interrupts. Maintain
a per-CPU interrupt counter for clock, device, and interprocessor
interrupts.
 1.29  04-Jun-2000  cgd Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).
 1.28  26-Mar-2000  nisimura branches: 1.28.2;
- Remove unused bt459reg.h.
- sfbvar.h has gone, placing patch on holes for now. Every TC framebuffer
has a single explosure of xxfb_cnattach() which could be bridged by MI
land.
 1.27  07-Aug-1999  drochner branches: 1.27.2;
clean up error handling in TC graphics console attachment: all functions
return 0 on success and an errno on failure
 1.26  10-Apr-1999  cgd be more consistent about use of 'cputype'. e.g. it's in a header, don't
bother 'externing' it everywhere!
 1.25  19-Nov-1998  ross branches: 1.25.6;
More include shuffling.
 1.24  22-Oct-1998  briggs Preliminary support for both serial consoles and kbd/display wscons
consoles for TC alphas. Based on code from Takuya Koumoto
<takuya-k@is.aist-nara.ac.jp> as well as some parts of Toru Nishimura's
and Matthias Drochner's work on pmax wscons. This relies on the
NEW_SCC_DRIVER.
 1.23  14-May-1998  thorpej Garbage-collect the old confargs stuff that was used in the Early Days.
It isn't really appropriate anymore. Replace it with a real mainbus
attach args structure.
 1.22  19-Jan-1998  thorpej Pass a pointer to the "get this slot's DMA tag" function pointer to
the tc instance just like we do with the interrupt functions.
 1.21  12-Jan-1998  thorpej Adjust for config changes.
 1.20  02-Sep-1997  thorpej Pull in DEC_3000_300 and DEC_3000_500 options.
 1.19  02-Sep-1997  thorpej Nuke the idea of <machine/options.h>. It completely defeats the purpose
of fine-grain option dependencies.
 1.18  06-Jun-1997  thorpej branches: 1.18.4;
Pull thorpej-bus-dma branch into mainline.
 1.17  07-Apr-1997  cgd branches: 1.17.2;
by default, provide RCS IDs for NetBSD/alpha kernel files in kernel binaries.
This can be disabled (to save a bit of space) with the NO_KERNEL_RCSIDS
options, which is present but commented out in the ALPHA config file.
In ELF-format kernels, these strings are present in the kernel binary but
are not loaded into memory. (In ECOFF-format kernels, there's no easy way
to keep them from being loaded, so they _are_ loaded into memory.)
 1.16  06-Apr-1997  cgd clean up NetBSD RCS ID strings, include machine/options.h
 1.15  08-Dec-1996  cgd remove all traces of __BROKEN_INDIRECT_CONFIG (except in shared drivers)
 1.14  05-Dec-1996  cgd update these so they compile whether or not __BROKEN_INDIRECT_CONFIG
is defined.
 1.13  15-Nov-1996  cgd branches: 1.13.2;
Include a PMAGB-BA in the list of built-in devices only if SV_GRAPHICS
is set in the RPB's rpb_variation field. This fixes a bug where machines
(e.g. the 3000/900) would see that they could touch memory where a built-in
PMAGB-BA, assume that it was there, and panic later because the memory they
were accessing didn't look like PMAGB-BA registers (because it wasn't).
 1.12  23-Oct-1996  cgd update for new bus.h macros. bus_io_* and bus_mem_* integrated into
single bus_space_* framework. Unfortunately, bus_space_{read,write}_*
operations still imply barriers. That will change soon.
 1.11  22-Oct-1996  cgd update for new bus.h
 1.10  13-Oct-1996  christos backout previous kprintf change
 1.9  10-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.8  27-Aug-1996  cgd change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
 1.7  14-Jul-1996  cgd (1) Clean up interrupt handling slightly.
 1.6  09-Jul-1996  cgd clean and update for new defintions, prototypes, etc.
 1.5  17-May-1996  cgd branches: 1.5.4;
set up a bus_chpiset_tag_t, and pass it to the TC code
 1.4  12-Apr-1996  cgd clean up copyrights and RCS IDs
 1.3  12-Apr-1996  cgd update for latest MI TC and SCSI code, and clean up in the face of
config changes.
 1.2  17-Mar-1996  thorpej New device attachment scheme:

- split softc size and match/attach out from cfdriver into
a new struct cfattach.

- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
 1.1  20-Dec-1995  cgd update for new turbochannel configuration code.
 1.5.4.1  05-Dec-1996  rat Patch request from Chris Demetriou <cgd@NetBSD.ORG>

>Include a PMAGB-BA in the list of built-in devices only if SV_GRAPHICS
>is set in the RPB's rpb_variation field. This fixes a bug where machines
>(e.g. the 3000/900) would see that they could touch memory where a built-in
>PMAGB-BA, assume that it was there, and panic later because the memory they
>were accessing didn't look like PMAGB-BA registers (because it wasn't).
 1.13.2.4  07-Jun-1997  cgd syng thorpej-bus-dma changes with alpha-nwscons branch
 1.13.2.3  01-Jun-1997  cgd sync the nwscons branch up with yesterday's version of the trunk.
Lots of conflicts/changes because of the RCS Id format changes.
Also, a few cleanups and corrections.
 1.13.2.2  08-Dec-1996  cgd sync __BROKEN_INDIRECT_CONFIG removal with trunk.
 1.13.2.1  07-Dec-1996  cgd mostly sync with changes on the trunk
 1.17.2.2  06-Jun-1997  thorpej Split DEC 3000/300 and 3000/500 DMA functions into separate files,
suggested by Chris Demetriou <cgd@netbsd.org>.
 1.17.2.1  03-Jun-1997  thorpej Call tc_dma_init() to intialize DMA-related things.
 1.18.4.1  04-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.25.6.1  21-Jun-1999  thorpej Sync w/ -current.
 1.27.2.3  12-Mar-2001  bouyer Sync with HEAD.
 1.27.2.2  05-Jan-2001  bouyer Sync with HEAD
 1.27.2.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.28.2.1  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.34.4.3  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.34.4.2  25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.34.4.1  03-Aug-2001  lukem update to -current
 1.36.2.3  03-Jan-2003  thorpej Sync with HEAD.
 1.36.2.2  18-Oct-2002  nathanw Catch up to -current.
 1.36.2.1  23-Aug-2001  nathanw file tcasic.c was added on branch nathanw_sa on 2002-10-18 02:34:33 +0000
 1.39.86.1  08-Dec-2007  mjf Sync with HEAD.
 1.39.80.1  09-Jan-2008  matt sync with HEAD
 1.39.78.1  09-Dec-2007  jmcneill Sync with HEAD.
 1.39.60.1  03-Dec-2007  ad Sync with HEAD.
 1.39.18.1  07-Dec-2007  yamt sync with head
 1.40.32.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.40.26.1  28-Apr-2009  skrll Sync with HEAD.
 1.40.18.1  04-May-2009  yamt sync with head.
 1.42.10.1  23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.42.6.1  06-Jun-2011  jruoho Sync with HEAD.
 1.42.4.1  12-Jun-2011  rmind sync with head
 1.43.6.1  18-Feb-2012  mrg merge to -current.
 1.43.2.1  17-Apr-2012  yamt sync with head
 1.44.28.1  07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.44.24.2  28-Aug-2017  skrll Sync with HEAD
 1.44.24.1  05-Feb-2017  skrll Sync with HEAD
 1.44.6.1  03-Dec-2017  jdolecek update from HEAD
 1.45.8.1  01-Jul-2017  snj Pull up following revision(s) (requested by flxd in ticket #65):
share/man/man4/tc.4: revision 1.7
sys/arch/alpha/tc/tcasic.c: revision 1.46
sys/arch/pmax/tc/tcbus.c: revision 1.33
sys/arch/vax/conf/files.vax: revision 1.121
sys/arch/vax/vsa/tc_vsbus.c: revision 1.8, 1.9
sys/dev/tc/tc.c: revision 1.55
sys/dev/tc/tcvar.h: revision 1.27
Make VAXstation 4000 TURBOchannel adaptor work.
PIO and IRQ tested on VS4000/60 and /96 with TC-USB (slhci) and PMAD-AA (le).
DMA is untested.
vax needs space to be mapped out, so memory space is pre-mapped for TC option
drivers not bus_space'ified yet, also providing custom bus_space methods for
this kludge.
--
whitespace
--
Add vax.
 1.49.4.1  21-Mar-2021  thorpej Give config_found() the same variadic arguments treatment as
config_search(). This commit only adds the CFARG_EOL sentinel
to the existing config_found() calls. Conversion of config_found_sm_loc()
and config_found_ia() call sites will be in subsequent commits.
 1.50.2.1  13-May-2021  thorpej Sync with HEAD.
 1.51.6.1  03-Aug-2021  thorpej Adapt to CFARGS().

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