CVS log for src/sys/arch/alpha/pci/pci_machdep.c

Up to [cvs.NetBSD.org] / src / sys / arch / alpha / pci

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

fix various typos, mainly in comments.

Sync with HEAD.

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.

Tweak how the IRQ description strings are generated to enable additional
duplicated code re-factoring.

Make the following PCI chipset functions optional:
- attach_hook()
- bus_maxdevs()
- make_tag()
- decompose_tag()
...and provide a default implementation for each.

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().

Implement cpu_intr_redistribute() for Tusnami/Titan systems.

Add support for CPU interrupt affinity for PCI interrupts:
- Keep a bitmap of eligible interrupt-handling CPUs in the pci_chipset_tag_t.
  If this bitmap is 0, then we assume that all PCI interrupts should be
  routed to the primary CPU.
- Add an optional PCI chipset callback for setting the CPU affinity of
  an interrupt.
- When an establishing an interrupt handler, select the CPU that will
  handle this irq using the following algorithm:
  ==> If the irq already has a CPU assignment, keep it.
  ==> Otherwise, find the CPU with the fewest registered handlers that
      is eligible from both a hardware (based on the pci_chipset_tag_t)
      and software (based on cpu_info::ci_schedstate.spc_flags) perspectives.
  ==> Fall back to the primary CPU failing all else.

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.

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.

Mostly merge changes from HEAD upto 20200411

Fix build without vga at pci.

update from HEAD

PCI controller doesn't rely on (depend on) AGP bus, but provide it.  If one
specific architecture is known to have some specific AGP implementation, such
suggestion must be done in the "selection" part, not the "definition" part.

This is also an indirect (across bus attachment), circular dependency.

Rebase to HEAD as of a few days ago.

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")

sync with head

make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

gc sprintf; reduce local static usage of interrupt strings that are only
used once for autoconf printing.

Check and set "is_console" property to PCI displays for framebuffer drivers.

Tested on DS15 with radeonfb(4) and XP1000 with vga(4)
by Naruaki Etomi in PR/48431.

sync with head

merge to -current.

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

sync with head

Remove unneeded includes of <uvm/uvm_extern.h>

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

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.

Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

update to -current

So, the PowerStorm 4d20 a.k.a. 32bit TGA2 w/ IBM RGB561 RAMDAC was causing
the kernel to panic since it is recognised as a TGA and the TGA driver
doesn't [yet] know what to do with it.

This patch fixes that by:
	o  making tgamatch() try to actually figure out what kind
	   of TGA card is there, rather than simply relying on the
	   vendor/product ids.
	o  creating a tga_cnmatch() so that the console code in
	   arch/alpha/pci/pci_machdep.c can cause the same to occur.
	o  breaking up some of tga_getdevconfig() into a few different
	   functions to re-use code that would have been duplicated.
	o  changed arch/alpha/pci/pci_machdep.c so that it calls out
	   to tga_cnmatch() if DEVICE_IS_TGA() matches before it decides
	   to attach the console as a TGA.

Addresses PR: port-alpha/12923

file pci_machdep.c was added on branch nathanw_sa on 2001-07-16 00:55:18 +0000

So, the PowerStorm 4d20 a.k.a. 32bit TGA2 w/ IBM RGB561 RAMDAC was causing
the kernel to panic since it is recognised as a TGA and the TGA driver
doesn't [yet] know what to do with it.

This patch fixes that by:
	o  making tgamatch() try to actually figure out what kind
	   of TGA card is there, rather than simply relying on the
	   vendor/product ids.
	o  creating a tga_cnmatch() so that the console code in
	   arch/alpha/pci/pci_machdep.c can cause the same to occur.
	o  breaking up some of tga_getdevconfig() into a few different
	   functions to re-use code that would have been duplicated.
	o  changed arch/alpha/pci/pci_machdep.c so that it calls out
	   to tga_cnmatch() if DEVICE_IS_TGA() matches before it decides
	   to attach the console as a TGA.

Addresses PR: port-alpha/12923

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.

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

pull in new PC display headers

Adapt PCI console selection to new mi drivers.

Update marc-pcmcia branch from trunk.

Nuke the idea of <machine/options.h>.  It completely defeats the purpose
of fine-grain option dependencies.

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.

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.)

clean up NetBSD RCS ID strings, include machine/options.h

Merge in latest Trunk.

fix problem compiling if neither PCI VGA nor TGA frame buffers were
configured.  Pointed out by Matt Jacob.

snapshot of work in progress (on private branch): first checkin of
reimplemented 'wscons' interfaces.

update for VGA-related changes

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.

clean up copyrights and RCS IDs

update for new PCI, etc., interfaces.

wholesale update from my NetBSD/Alpha source tree.  Includes:
	Support for AXPpci CPUs,
	Support for AlphaStation 600 CPUs,
	new boot block structure, which requires an 'installboot'
	    program and works a lot like the NetBSD/sparc boot blocks.

i/o map function dispatch, console picker function

ISA and PCI support for DEC AlphaStations