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History log of /src/sys/arch/alpha/jensenio/pckbc_jensenio.c
RevisionDateAuthorComments
 1.16  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.
 1.15  18-Nov-2020  thorpej branches: 1.15.4;
malloc(9) -> kmem(9)
 1.14  25-Sep-2020  thorpej branches: 1.14.2;
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.
 1.13  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.
 1.12  21-Mar-2014  christos gc sprintf; reduce local static usage of interrupt strings that are only
used once for autoconf printing.
 1.11  06-Feb-2012  matt branches: 1.11.6; 1.11.10;
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
 1.10  28-Apr-2008  martin branches: 1.10.34; 1.10.38;
Remove clause 3 and 4 from TNF licenses
 1.9  15-Mar-2008  cube branches: 1.9.2; 1.9.4;
Split device_t and softc for pckbc(4) and its attachments.
 1.8  05-Jan-2008  ad branches: 1.8.2; 1.8.6;
Fix includes.
 1.7  03-Dec-2007  ad branches: 1.7.6;
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.
 1.6  02-Oct-2002  thorpej branches: 1.6.22; 1.6.64; 1.6.82; 1.6.84; 1.6.90;
Use CFATTACH_DECL().
 1.5  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.4  27-Sep-2002  thorpej Rather than referencing the cfdriver directly in the cfdata entries,
instead use a string naming the driver. The cfdriver is then looked
up in a list which is built at run-time.
 1.3  27-Jul-2001  thorpej branches: 1.3.2;
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.
 1.2  12-Jul-2001  thorpej bzero -> memset
 1.1  12-Jul-2000  thorpej branches: 1.1.2; 1.1.4; 1.1.8;
Code to support the DEC 2000/300 (DECpc AXP 150, a.k.a. "Jensen")
systems. Thanks to Gyenes Istvan for the rounds of testing.
 1.1.8.2  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
 1.1.8.1  03-Aug-2001  lukem update to -current
 1.1.4.2  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.
 1.1.4.1  12-Jul-2000  bouyer file pckbc_jensenio.c was added on branch thorpej_scsipi on 2000-11-20 19:57:03 +0000
 1.1.2.2  12-Jul-2000  thorpej Update from trunk:
Code to support the DEC 2000/300 (DECpc AXP 150, a.k.a. "Jensen")
systems. Thanks to Gyenes Istvan for the rounds of testing.
 1.1.2.1  12-Jul-2000  thorpej file pckbc_jensenio.c was added on branch netbsd-1-5 on 2000-07-12 20:59:15 +0000
 1.3.2.2  18-Oct-2002  nathanw Catch up to -current.
 1.3.2.1  27-Jul-2001  nathanw file pckbc_jensenio.c was added on branch nathanw_sa on 2002-10-18 02:34:16 +0000
 1.6.90.2  18-Feb-2008  mjf Sync with HEAD.
 1.6.90.1  08-Dec-2007  mjf Sync with HEAD.
 1.6.84.2  23-Mar-2008  matt sync with HEAD
 1.6.84.1  09-Jan-2008  matt sync with HEAD
 1.6.82.1  09-Dec-2007  jmcneill Sync with HEAD.
 1.6.64.1  03-Dec-2007  ad Sync with HEAD.
 1.6.22.3  17-Mar-2008  yamt sync with head.
 1.6.22.2  21-Jan-2008  yamt sync with head
 1.6.22.1  07-Dec-2007  yamt sync with head
 1.7.6.1  08-Jan-2008  bouyer Sync with HEAD
 1.8.6.2  02-Jun-2008  mjf Sync with HEAD.
 1.8.6.1  03-Apr-2008  mjf Sync with HEAD.
 1.8.2.1  24-Mar-2008  keiichi sync with head.
 1.9.4.1  16-May-2008  yamt sync with head.
 1.9.2.1  18-May-2008  yamt sync with head.
 1.10.38.1  18-Feb-2012  mrg merge to -current.
 1.10.34.2  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")
 1.10.34.1  17-Apr-2012  yamt sync with head
 1.11.10.1  18-May-2014  rmind sync with head
 1.11.6.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.14.2.1  14-Dec-2020  thorpej Sync w/ HEAD.
 1.15.4.1  13-May-2021  thorpej Sync with HEAD.

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