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History log of /src/sys/arch/alpha/tc/tc_3000_300.c
RevisionDateAuthorComments
 1.39  07-May-2021  thorpej Liberally sprinkle static around to get more symbols out of the
global namespace. A small bit of const poisoning in the TC code.
 1.38  18-Nov-2020  thorpej branches: 1.38.4;
malloc(9) -> kmem(9)
 1.37  25-Sep-2020  thorpej branches: 1.37.2;
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.
 1.36  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.
 1.35  05-Sep-2020  thorpej - Document all of the various interrupt levels in the Processor Stataus
register, and provide symbolic names for them as well.
- Use ALPHA_PSL_IPL_* values directly for IPL_*.
 1.34  10-Nov-2019  chs in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.
 1.33  26-Mar-2014  christos branches: 1.33.30;
kill sprintf
 1.32  06-Feb-2012  matt branches: 1.32.6; 1.32.10;
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
 1.31  14-Jun-2011  matt branches: 1.31.2; 1.31.6;
struct device * -> device_t
 1.30  16-Mar-2009  dsl branches: 1.30.10;
ANSIfy functions with function-pointer arguments
 1.29  14-Mar-2009  dsl 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.)
 1.28  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.
 1.27  27-Sep-2002  provos branches: 1.27.112; 1.27.120; 1.27.126;
remove trailing \n in panic(). approved perry.
 1.26  27-Jul-2001  thorpej branches: 1.26.2;
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.
 1.25  05-Jun-2000  thorpej branches: 1.25.6;
Switch to the new `evcnt' mechanism for counting interrupts. Maintain
a per-CPU interrupt counter for clock, device, and interprocessor
interrupts.
 1.24  04-Jun-2000  cgd Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).
 1.23  26-Mar-2000  nisimura branches: 1.23.2;
- 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.
 1.22  14-Mar-2000  nisimura Fix DEC3000/300 TC slot numbering. There is an address space hole
between two TC option cards and 3 builtin TC devices. Was uncovered by
mrg's change made at Nov 1999 and pointed by tsutsui.
 1.21  03-Feb-2000  nisimura Merge IOASIC register definitions.
 1.20  07-Aug-1999  drochner branches: 1.20.2;
clean up error handling in TC graphics console attachment: all functions
return 0 on success and an errno on failure
 1.19  28-Mar-1999  drochner Leave out display console related bits if wscons is not compiled in.
Should fix link error reported by Kevin <kev@drule.org>.
 1.18  12-Feb-1999  thorpej Fix printf format problems on Alpha. (IRONIC?!)
 1.17  23-Oct-1998  briggs DTRT if sfb is not configured in the kernel.
 1.16  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.
 1.15  02-Sep-1997  thorpej Nuke the idea of <machine/options.h>. It completely defeats the purpose
of fine-grain option dependencies.
 1.14  07-Apr-1997  cgd branches: 1.14.4;
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.)
 1.13  06-Apr-1997  cgd clean up NetBSD RCS ID strings, include machine/options.h
 1.12  13-Oct-1996  christos branches: 1.12.2;
backout previous kprintf change
 1.11  10-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.10  14-Jul-1996  cgd (1) Clean up interrupt handling slightly.
 1.9  09-Jul-1996  cgd clean and update for new defintions, prototypes, etc.
 1.8  05-Jun-1996  cgd interrupt counters for TurboChannel systems.
 1.7  01-May-1996  cgd branches: 1.7.4;
fix the test for option slot interrupts. If a given interrupt is
disabled (and therefore can't have caused the actual I/O interrupt),
don't try to call its handler even if its bit is set in the interrupt
register.
 1.6  12-Apr-1996  cgd clean up copyrights and RCS IDs
 1.5  12-Apr-1996  cgd update for latest MI TC and SCSI code, and clean up in the face of
config changes.
 1.4  20-Dec-1995  cgd update for new turbochannel configuration code.
 1.3  03-Aug-1995  cgd MB -> wbflush
 1.2  24-Mar-1995  cgd cleanup, add some comments, and (oh yeah!) look at interrupt bits
 1.1  08-Mar-1995  cgd update from my local tree; better CPU configuration, support for 3000/300.
 1.7.4.1  05-Jun-1996  cgd Pull up from trunk:
>interrupt counters for TurboChannel systems.
 1.12.2.1  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.
 1.14.4.1  04-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.20.2.1  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.
 1.23.2.1  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.25.6.2  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
 1.25.6.1  03-Aug-2001  lukem update to -current
 1.26.2.2  18-Oct-2002  nathanw Catch up to -current.
 1.26.2.1  27-Jul-2001  nathanw file tc_3000_300.c was added on branch nathanw_sa on 2002-10-18 02:34:32 +0000
 1.27.126.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.27.120.1  28-Apr-2009  skrll Sync with HEAD.
 1.27.112.1  04-May-2009  yamt sync with head.
 1.30.10.1  23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.31.6.1  18-Feb-2012  mrg merge to -current.
 1.31.2.2  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.31.2.1  17-Apr-2012  yamt sync with head
 1.32.10.1  18-May-2014  rmind sync with head
 1.32.6.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.33.30.1  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.37.2.1  14-Dec-2020  thorpej Sync w/ HEAD.
 1.38.4.1  13-May-2021  thorpej Sync with HEAD.

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