Commit Graph

65 Commits

Author SHA1 Message Date
sommerfeld ce6cc5672c Add "pa_rawintrpin" containing unswizzled interrupt pin to pci_attach_args. 2002-05-18 21:40:41 +00:00
sommerfeld 314ef13c23 In pci_probe_device(), correct test for whether the device is behind a
pci-pci bridge (and thus needs its interrupts "swizzled").

Formerly, pci_probe_device() assumed pci busses other than bus zero
were bridged; however, much recent x86 hardware supports multiple
primary pci busses differently -- there is a system-wide bus numbering
scheme.  Now, we instead look at the (newly introduced) sc_bridgetag
value in the parent bus to figure out if there's a ppb or equivalent
in the way.

This fixed at least one case where the i386 MP branch gets interrupt
mapping wrong.
2002-05-18 18:14:11 +00:00
thorpej 86b4df33e7 Make sure pa.pa_bus is initialized. (Thanks, uwe!) 2002-05-16 01:03:05 +00:00
thorpej 204183c0fa * Add "pcitag_t *pba_bridgetag" to pci_attach_args. This is set to
NULL for root PCI busses.  For busses behind a bridge, it points to
  a persistent copy of the bridge's pcitag_t.  This can be very useful
  for machine-dependent PCI bus enumeration code.
* Implement a machine-dependent pci_enumerate_bus() for sparc64 which
  uses OFW device nodes to enumerate the bus.  When a PCI bus that is
  behind a bridge is attached, pci_attach_hook() allocates a new PCI
  chipset tag for the new bus and sets it's "curnode" to the OFW node
  of the bridge.  This is used as a starting point when enumerating
  that bus.  Root busses get the OFW node of the host bridge (psycho).
* Garbage-collect "ofpci" and "ofppb" from the sparc64 port.
2002-05-16 01:01:28 +00:00
thorpej dada8613e1 Let machine-dependent code specify how to enumerate the bus.
Currently, everyone uses pci_enumerate_bus_generic().
2002-05-15 19:23:51 +00:00
thorpej 40116f53dd Put back __PCI_BUS_DEVORDER for now. 2002-05-15 18:39:47 +00:00
thorpej 7c86eb62bc Split the code that enumerates the PCI bus and that actually probes
for a device into two functions:

* pci_probe_device() actually probes/attaches the device specified
  by the provide pcitag_t.

* pci_enumerate_bus() enumerates the bus, and calls pci_probe_device()
  for each device on the bus.  A pci_enumerate_bus_generic() is provided
  which implements the old method of doing this: If something found at
  dev0/func0, determine number of functions and probe each one.

  Machine-dependent code will be able to specify the bus enumeration
  routine in the future.
2002-05-15 18:13:00 +00:00
lukem 9048aaae21 add RCSID 2001-11-13 07:48:40 +00:00
thorpej 397a84f51a Fix the semantics of __PCI_DEV_FUNCORDER so that they're actually useful:
If __PCI_DEV_FUNCORDER is defined, don't do the song-and-dance to check if
a device is multi-function; machdep code is going to tell us exactly which
functions to probe.

Note this required changing how pci_func_devorder() works in the
sparc64 PCI machdep code; now the "curnode" is assumed to point
to the bus, rather than some function (typically 0) on the device,
just as pci_bus_devorder() makes that assumption.

All this should allow the PCI code to actually locate the second
HME device on a Sun Netra t1, which is at 3,1 -- previously, the
PCI code would have missed it because there is no device at 3,0.

(Sun deserves a brick to the head for this one -- this seems clearly
out of line with the PCI spec.)
2001-10-17 22:16:41 +00:00
thorpej 23763f2f28 Add an ioctl interface to the PCI bus. Add ioctls to read/write
PCI configuration space registers, and to fetch bus info.
2001-09-13 21:49:40 +00:00
fvdl ac50343c76 Add a pci_find_device function, to find a PCI device using a match
function on all (probed) PCI buses:

int     pci_find_device(struct pci_attach_args *pa,
                        int (*match)(struct pci_attach_args *));

The pci_attach_args structure pointed to by pa is filled in if the
device is found, and 1 is returned. Otherwise 0 is returned.

This function is, unfortunately, needed by the i810 agp code. It's
also of use for LKMs.

Also frob pci_probe_bus to take 2 extra args when used by pci_find_device.
2001-09-10 10:04:49 +00:00
mrg 0b1849a71a don't try to print pcitag_t values; these are opaque values that should not
be interpreted by MI code.
2001-07-11 08:36:46 +00:00
thorpej a888f6ef73 If the cache line size in the BHLC register is not configured,
then clear the MRL/MRM/MWI command-ok flags when attaching a
device.
2001-05-22 16:10:44 +00:00
bouyer 956a71c1c5 Add pci bus number to pci_attach_args, as suggested by Jason on tech-kern
(needed for pciide)
2001-05-04 15:13:17 +00:00
mrg 11524b8374 allow pci_bus_maxdevs() to be replaced with pci_bus_devorder() and
pci_dev_funcorder() that have the following signatures:

int pci_bus_devorder(pci_chipset_tag_t pc, int bus, char list[32]);
int pci_dev_funcorder(pci_chipset_tag_t pc, int bus, int device, char list[8]);

they control the order of PCI bus probe at the device and function level,
by filling in a value from 0 to 31 for pci_bus_devorder() or 0 to 7 for
pci_dev_funcorder, with a value of -1 to signify no more entries.


when device properties arrive, these will be replaced with some facility
based on properties (design/implementation unknown currently.)
2001-03-02 06:24:17 +00:00
mrg 6ee70851f1 backout the parts of the previous change (7 months ago) that were *not* part
of the sys/vm removal, but some (fortunately disabled) work-in-progress.
2001-02-12 09:14:53 +00:00
mrg 7c15053eed remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 16:08:42 +00:00
kleink 7a6f003756 Add a comment describing the previous change. 2000-05-10 08:39:58 +00:00
kleink 05f0b17555 Make pci_get_capability() work correctly on both header type 0 and type 2
devices; both have different Capability List Pointer registers.
2000-05-08 10:52:38 +00:00
augustss 169ac5b3c1 Remove register declarations. 2000-03-30 12:41:09 +00:00
cgd 00f7a2d476 if the PCI_CONFIG_DUMP option is defined, set the patchable
pci_config_dump variable to 1.  otherwise, it gets set to 0.  If
that's set, when configuring PCI devices spew the very verbose
configuration space header dump that was previously "#if 0"'d.
If you use this option, or patch the variable to 1, it's strongly
encouraged that you have used the MSGBUFSIZE option to enlarge the
kernel message buffer.
2000-03-22 00:47:26 +00:00
thorpej 110ac27449 Make sure devices are told they can use rd/line, rd/mult, and wr/inval. 1999-11-04 19:03:00 +00:00
thorpej a4e1bde0b3 Print out if the read {line,multiple} and write/invalidate commands are
okay to use.
1999-11-04 01:03:34 +00:00
thorpej 964b69ec84 Back out previous. Thanks to cgd for pointing out another way to do this. 1999-05-06 01:10:28 +00:00
thorpej 2a4490daa5 Add a `bus' member to the pci_attach_args. This is not normally used,
but some child drivers might need to know this information.
1999-05-06 01:01:19 +00:00
drochner bbe9d71415 add support for "extended capabilities" (new in PCI spec 2.2) 1998-11-07 16:47:22 +00:00
mycroft 6d3d8a1350 Make copyright notices with my name consistent. 1998-08-15 03:02:31 +00:00
thorpej ab548fbb40 Remove the PCI-ISA bridge callback mechanism; it's no longer needed. 1998-06-09 18:48:41 +00:00
cgd 86585ca518 use the new PCI 'quirks' mechanism to help determine the number
of functions on a given device.  Also, clean up the #if 0'd
major-debugging-spew code so that it's all one piece, so that
it's a bit prettier, and so that it prints out quirk information.
1998-05-31 06:05:28 +00:00
cgd 9991233636 add an #if 0'd chunk which will pci_conf_print() every device (spews
lots of data, e.g. ~18k on a PCI system with few add-in devices; use
with MSGBUFSIZE=...).  Useful to have here so that people who want as
much data about the PCI configuration in a machine can get it without
having to craft their own code.  Also, clean up a few of the other
#if 0'd printfs.
1998-05-18 17:28:07 +00:00
mjacob ed8ddb6948 more info (in heavy debugging cases) to print 1998-05-05 22:14:23 +00:00
drochner 928943b2ff Keep all relevant state information in a "pci_softc" so that it is
accessible at runtime (for LKMs in particular).
Remove BROKEN_INDIRECT_CONFIG.
1998-04-17 18:40:31 +00:00
cgd 2f8f14b311 check vendor against PCI_VENDOR_INVALID instead of 0xffff.
Suggested by Soren S. Jorvang.
1998-03-28 02:24:04 +00:00
cgd bd31517508 check only the Vendor ID (rather than both the Vendor ID and the Product
ID) when determining if the Vendor ID is invalid.  The spec says that
Vendor ID of 0xffff is invalid, so, it doesn't _matter_ what the product
ID is in that case.  Treat Vendor ID 0 as invalid because we always have.
1998-03-20 19:56:19 +00:00
thorpej 480445c035 When a PCI bus is attached, print out which bus spaces were enabled
by the parent.
1998-01-31 00:37:39 +00:00
thorpej 06ce220790 Update for config changes. 1998-01-12 09:39:57 +00:00
mycroft 8c578dc960 Pass down bus_dma_tag_t's as appropriate (per Jason's bus_dma code). 1997-08-30 06:53:57 +00:00
mycroft e2bb22033b Remove pci_*_find() from here. 1997-08-30 06:47:44 +00:00
cgd cc93b2c4eb pass memory- and i/o-enabled flags down via the PCI bus and device attach
arguments, so that a device can tell if its memory and I/O spaces are
enabled.  The flags are cleared, depending on the contents of devices CSR
registers, in the machine-independent PCI bus code.
1997-04-10 23:12:16 +00:00
cgd 197d80c63a update these so they compile whether or not __BROKEN_INDIRECT_CONFIG
is defined.
1996-12-05 01:25:23 +00:00
cgd 828f1f3aa1 Provide a routine so that ISA/EISA bridges can set up a callback so
that their child busses can be attached after the PCI bus
autoconfiguration for their parent bus is done.

This works because:
	(1) there can be at most one ISA/EISA bridge per PCI bus, and
	(2) any ISA/EISA bridges must be attached to primary PCI
	    busses (i.e. bus zero).

That boils down to: there can only be one of these outstanding
at a time, it is cleared when configuring PCI bus 0 before any
subdevices have been found, and it is run after all subdevices
of PCI bus 0 have been found.

This (or something like it) is needed because there are some (legacy)
PCI devices which can show up as ISA/EISA devices as well (the prime
example of which are VGA controllers).  If you attach ISA from a
PCI-ISA/EISA bridge, and the bridge is seen before the video board is,
the board can show up as an ISA device, and that can (bogusly)
complicate the PCI device's attach code, or make the PCI device not be
properly attached at all.

This could be done with machine-dependent code, but as more ports
add support for PCI (and PCI-ISA/EISA bridges) more will need it.
The i386 port could (perhaps should) be converted to use it as well.
1996-11-23 21:58:16 +00:00
thorpej 546c8abcee New bus.h implementation/interface:
- No more distinction between i/o-mapped and memory-mapped
	  devices.  It's all "bus space" now, and space tags
	  differentiate the space with finer grain than the
	  bus chipset tag.
	- Add memory barrier methods.
	- Implement space alloc/free methods.
	- Implement region read/write methods (like memcpy to/from
	  bus space).
This interface provides a better abstraction for dealing with
machine-independent chipset drivers.
1996-10-21 22:56:24 +00:00
christos 86373f8cf9 backout kprintf changes 1996-10-13 01:37:04 +00:00
christos 95e30eafe7 printf -> kprintf, sprintf -> ksprintf 1996-10-10 19:58:18 +00:00
cgd 2a73ef60b7 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).
1996-08-27 21:53:46 +00:00
mycroft a2aa46e1c4 Add PCI_MAPREG_{IO,MEM}_SIZE(), and use them. 1996-07-26 07:13:52 +00:00
christos 2d0606e988 remove unused variables 1996-05-03 17:33:49 +00:00
cgd 87328287b7 modify these to provide a new, better-specified PCI interface
(soon to be documented on mailing lists; eventually in section 9 manual
pages), most importantly:
	(1) support interrupt pin swizzling on non-i386 systems with
	    PCI-PCI bridges (per PPB spec; done, but meaningless, on i386).
	(2) provide pci_{io,mem}_find(), to determine what I/O or memory
	    space is described by a given PCI configuration space
	    mapping register.
	(3) provide pci_intr_map(), pci_intr_string(), and
	    pci_intr_{,dis}establish() to manipulate and print info about
	    PCI interrupts.
	(4) make pci functions take as an argument a machine-dependent
	    cookie, to allow more flexibility in implementation.
1996-03-27 04:08:24 +00:00
cgd 72060dc6fa add definitions for the BIST/Header Type/Latency Timer/Cache Line Size
configuration space register, and use it to determine whether or not
a given PCI device uses multiple functions.
1996-03-27 00:13:50 +00:00
thorpej de7c200585 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.
1996-03-17 00:53:54 +00:00