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History log of /src/sys/arch/alpha/pci/pci_6600.c
RevisionDateAuthorComments
 1.33  04-Jul-2021  thorpej Remove unnecessary #include <sys/malloc.h>
 1.32  04-Jul-2021  thorpej Reduce code duplication when setting up the interrupt handler data
structures:
- alpha_shared_intr_alloc() no longer takes a "string length" argument,
and just uses kmem_asprintf() to create an "irq %u" string by default.
This is suitable for nearly every caller.
- Add a alpha_shared_intr_set_string() that allows callers to override
the default IRQ description string.
- Related: make alpha_shared_intr_string() return a const char *, since
no callers should need to modify the string directly now.
- Re-factor PCI shared interrupt structure allocation / initialization
into a new alpha_pci_intr_alloc(), which is suitable for nearly every
Alpha PCI platform. Callers are expected to first have initialized
the interrupt hardware to the quiescent state.

Adjust various call sites of above functions to account for changes,
even if they are not able to use the newly re-factored code.
 1.31  25-Jun-2021  thorpej Tweak how the IRQ description strings are generated to enable additional
duplicated code re-factoring.
 1.30  19-Jun-2021  thorpej Don't use a bunch of switch() statements in the core logic drivers to select
the PCI interrupt initialization routine. Instead, register said routines
by systype in a link set, and look them up and invoke them in a new function
alpha_pci_intr_init().
 1.29  26-Sep-2020  thorpej branches: 1.29.6;
Implement cpu_intr_redistribute() for Tusnami/Titan systems.
 1.28  26-Sep-2020  thorpej Support CPU interrupt affinity on Tsunami systems.
 1.27  23-Sep-2020  thorpej Define a constant for the SIO IRQ line, and keep a shadow copy of
the interrupt enables.
 1.26  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.
 1.25  21-Mar-2014  christos gc sprintf; reduce local static usage of interrupt strings that are only
used once for autoconf printing.
 1.24  06-Feb-2012  matt branches: 1.24.6; 1.24.10;
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
 1.23  01-Jul-2011  dyoung branches: 1.23.2; 1.23.6;
#include <sys/bus.h> instead of <machine/bus.h>.
 1.22  14-Jun-2011  matt Major cleanup of alpha device drivers.
Switch to CFATTACH_DECL_NEW.
struct device * -> device_t
struct cfdata * -> cfdata_t
Use of device_xname. No direct access to struct device members.
Use aprint* (not complete).
 1.21  04-Apr-2011  dyoung branches: 1.21.2;
Neither pci_dma64_available(), pci_probe_device(), pci_mapreg_map(9),
pci_find_rom(), pci_intr_map(9), pci_enumerate_bus(), nor the match
predicate passed to pciide_compat_intr_establish() should ever modify
their pci_attach_args argument, so make their pci_attach_args arguments
const and deal with the fallout throughout the kernel.

For the most part, these changes add a 'const' where there was no
'const' before, however, some drivers and MD code used to modify
pci_attach_args. Now those drivers either copy their pci_attach_args
and modify the copy, or refrain from modifying pci_attach_args:

Xen: according to Manuel Bouyer, writing to pci_attach_args in
pci_intr_map() was a leftover from Xen 2. Probably a bug. I
stopped writing it. I have not tested this change.

siside(4): sis_hostbr_match() needlessly wrote to pci_attach_args.
Probably a bug. I use a temporary variable. I have not tested this
change.

slide(4): sl82c105_chip_map() overwrote the caller's pci_attach_args.
Probably a bug. Use a local pci_attach_args. I have not tested
this change.

viaide(4): via_sata_chip_map() and via_sata_chip_map_new() overwrote the
caller's pci_attach_args. Probably a bug. Make a local copy of the
caller's pci_attach_args and modify the copy. I have not tested
this change.

While I'm here, make pci_mapreg_submap() static.

With these changes in place, I have tested the compilation of these
kernels:

alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-eb NSLU2
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE GUMSTIX
HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321 IXDP425 IXM1200
KUROBOX_PRO LUBBOCK MARVELL_NAS NAPPI SHEEVAPLUG SMDK2800 TEAMASA_NPWR
TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sgimips GENERIC32_IP2x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC

As of Sun Apr 3 15:26:26 CDT 2011, I could not compile these kernels
with or without my patches in place:

### evbmips-el GDIUM

nbmake: nbmake: don't know how to make /home/dyoung/pristine-nbsd/src/sys/arch/mips/mips/softintr.c. Stop

### evbarm-el MPCSA_GENERIC
src/sys/arch/evbarm/conf/MPCSA_GENERIC:318: ds1672rtc*: unknown device `ds1672rtc'

### ia64 GENERIC

/tmp/genassym.28085/assym.c: In function 'f111':
/tmp/genassym.28085/assym.c:67: error: invalid application of 'sizeof' to incomplete type 'struct pcb'
/tmp/genassym.28085/assym.c:76: error: dereferencing pointer to incomplete type

### sgimips GENERIC32_IP3x

crmfb.o: In function `crmfb_attach':
crmfb.c:(.text+0x2304): undefined reference to `ddc_read_edid'
crmfb.c:(.text+0x2304): relocation truncated to fit: R_MIPS_26 against `ddc_read_edid'
crmfb.c:(.text+0x234c): undefined reference to `edid_parse'
crmfb.c:(.text+0x234c): relocation truncated to fit: R_MIPS_26 against `edid_parse'
crmfb.c:(.text+0x2354): undefined reference to `edid_print'
crmfb.c:(.text+0x2354): relocation truncated to fit: R_MIPS_26 against `edid_print'
 1.20  15-Dec-2010  matt branches: 1.20.2;
Remove unneeded includes of <uvm/uvm_extern.h>
 1.19  16-Mar-2009  dsl branches: 1.19.4;
ANSIfy functions with function-pointer arguments
 1.18  14-Mar-2009  dsl ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.17  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.)
 1.16  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.
 1.15  03-Dec-2007  ad branches: 1.15.18; 1.15.26; 1.15.32;
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.
 1.14  16-Feb-2006  mhitch branches: 1.14.24; 1.14.42; 1.14.44; 1.14.50;
Bad Jason! Fix interrupt event counter attach typo. Only the last interrupt
was getting an event counter, and none of the dec_6600 interrupts were
getting counted.
 1.13  11-Dec-2005  christos branches: 1.13.2; 1.13.4; 1.13.6;
merge ktrace-lwp.
 1.12  02-Jun-2005  drochner branches: 1.12.2;
add more "const"
 1.11  29-Mar-2005  thorpej - Add a alpha_shared_intr_reset_strays() function that resets the stray
interrupt counter for a given shared interrupt descriptor.
- When an interrupt is successfully handled, reset the strays counter,
thus preventing a "slow leak" from eventually shutting off the interrupt
vector. Idea taken from pci_kn300.c (which was changed to use the new
alpha_shared_intr_reset_strays() function).
 1.10  27-Sep-2002  provos branches: 1.10.6; 1.10.12; 1.10.14; 1.10.20;
remove trailing \n in panic(). approved perry.
 1.9  15-May-2002  thorpej Rename alpha_pci_decompose_tag() to pci_decompose_tag(). There *is*
some MI PCI code that uses it, and soon there will be more. (The rationale
for not making it available previously was that it could be mis-used, but
that's true of a lot of things.)
 1.8  27-Jul-2001  thorpej branches: 1.8.2;
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.
 1.7  28-Dec-2000  sommerfeld branches: 1.7.4;
Change pci_intr_map to get interrupt source information from a "struct
pci_attach_args *" instead of from four separate parameters which in
all cases were extracted from the same "struct pci_attach_args".

This both simplifies the driver api, and allows for alternate PCI
interrupt mapping schemes, such as one using the tables described in
the Intel Multiprocessor Spec which describe interrupt wirings for
devices behind pci-pci bridges based on the device's location rather
the bridge's location.

Tested on alpha and i386; welcome to 1.5Q
 1.6  29-Jun-2000  mrg remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>
 1.5  06-Jun-2000  thorpej Report which compatibility IRQ the PCI IDE gets.
 1.4  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.
 1.3  04-Jun-2000  cgd Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).
 1.2  19-Mar-2000  thorpej branches: 1.2.2;
Add support for mapping the OHCI USB controller interrupt (which is wired toan ISA IRQ because it's in the same package as the PCI-ISA bridge).
 1.1  29-Jun-1999  ross branches: 1.1.2; 1.1.4; 1.1.6;
Support for EV6 Tsunami core logic and system type 6600.
This covers most or all of the presently-available 21264 systems.
 1.1.6.2  05-Jan-2001  bouyer Sync with HEAD
 1.1.6.1  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.
 1.1.4.2  29-Jun-1999  ross Support for EV6 Tsunami core logic and system type 6600.
This covers most or all of the presently-available 21264 systems.
 1.1.4.1  29-Jun-1999  ross file pci_6600.c was added on branch netbsd-1-4 on 1999-06-29 06:46:47 +0000
 1.1.2.2  01-Jul-1999  thorpej Sync w/ -current.
 1.1.2.1  29-Jun-1999  thorpej file pci_6600.c was added on branch chs-ubc2 on 1999-07-01 23:00:57 +0000
 1.2.2.1  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.7.4.3  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
 1.7.4.2  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.7.4.1  03-Aug-2001  lukem update to -current
 1.8.2.3  18-Oct-2002  nathanw Catch up to -current.
 1.8.2.2  20-Jun-2002  nathanw Catch up to -current.
 1.8.2.1  27-Jul-2001  nathanw file pci_6600.c was added on branch nathanw_sa on 2002-06-20 03:37:44 +0000
 1.10.20.2  20-Feb-2006  tron Pull up following revision(s) (requested by mhitch in ticket #1175):
sys/arch/alpha/pci/pci_6600.c: revision 1.14
Bad Jason! Fix interrupt event counter attach typo. Only the last interrupt
was getting an event counter, and none of the dec_6600 interrupts were
getting counted.
 1.10.20.1  30-Mar-2005  tron Pull up revision 1.11 (requested by thorpej in ticket #76):
- Add a alpha_shared_intr_reset_strays() function that resets the
stray
interrupt counter for a given shared interrupt descriptor.
- When an interrupt is successfully handled, reset the strays counter,
thus preventing a "slow leak" from eventually shutting off the
interrupt
vector. Idea taken from pci_kn300.c (which was changed to use
the new
alpha_shared_intr_reset_strays() function).
 1.10.14.1  29-Apr-2005  kent sync with -current
 1.10.12.2  26-Feb-2006  riz Pull up following revision(s) (requested by mhitch in ticket #10320):
sys/arch/alpha/pci/pci_6600.c: revision 1.14
Bad Jason! Fix interrupt event counter attach typo. Only the last interrupt
was getting an event counter, and none of the dec_6600 interrupts were
getting counted.
 1.10.12.1  11-May-2005  riz Pull up revision 1.11 (requested by thorpej in ticket #1373):
- Add a alpha_shared_intr_reset_strays() function that resets the
stray
interrupt counter for a given shared interrupt descriptor.
- When an interrupt is successfully handled, reset the strays counter,
thus preventing a "slow leak" from eventually shutting off the
interrupt
vector. Idea taken from pci_kn300.c (which was changed to use
the new
alpha_shared_intr_reset_strays() function).
 1.10.6.2  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.10.6.1  01-Apr-2005  skrll Sync with HEAD.
 1.12.2.2  07-Dec-2007  yamt sync with head
 1.12.2.1  21-Jun-2006  yamt sync with head.
 1.13.6.1  22-Apr-2006  simonb Sync with head.
 1.13.4.1  09-Sep-2006  rpaulo sync with head
 1.13.2.1  18-Feb-2006  yamt sync with head.
 1.14.50.1  08-Dec-2007  mjf Sync with HEAD.
 1.14.44.1  09-Jan-2008  matt sync with HEAD
 1.14.42.1  09-Dec-2007  jmcneill Sync with HEAD.
 1.14.24.1  03-Dec-2007  ad Sync with HEAD.
 1.15.32.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.15.26.1  28-Apr-2009  skrll Sync with HEAD.
 1.15.18.1  04-May-2009  yamt sync with head.
 1.19.4.2  21-Apr-2011  rmind sync with head
 1.19.4.1  05-Mar-2011  rmind sync with head
 1.20.2.1  06-Jun-2011  jruoho Sync with HEAD.
 1.21.2.1  23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.23.6.1  18-Feb-2012  mrg merge to -current.
 1.23.2.2  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")
 1.23.2.1  17-Apr-2012  yamt sync with head
 1.24.10.1  18-May-2014  rmind sync with head
 1.24.6.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.29.6.1  01-Aug-2021  thorpej Sync with HEAD.

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