Commit Graph

74 Commits

Author SHA1 Message Date
Ian Lepore
b8ed20dbc4 Create an interface and support routines for drivers that handle IO pin
multiplexing and configuration based on FDT data.

Reviewed by:	imp
2014-09-13 19:03:32 +00:00
Ian Lepore
b4172e33fd Use OF_xref_from_device(), not OF_xref_from_node(). Also, use bzero()
rather than memset().
2014-09-02 03:46:24 +00:00
Ian Lepore
6b6d6c4437 Create an interface for drivers to enable or disable their clocks as listed
in the clocks=<...> properties of their FDT data.  The clock properties
consist of 2-cell tuples, each containing a clock device node reference and
a clock number.  A clock device driver can register itself as providing
this interface, then other drivers can turn the FDT clock node reference
into the corresponding device_t so that they can use the interface to query
and manipulate their clocks.

This provides convenience functions to enable or disable all the clocks
listed in the properties for a device, so most drivers will be able to
manage their clocks with a single call to fdt_clock_enable_all(dev).
2014-09-02 03:23:05 +00:00
Ian Lepore
752ba93078 Rename OF_xref_phandle() to OF_node_from_xref() and add a new function
that provides the inverse translation, OF_xref_from_node().

Discussed with:	nwhitehorn
2014-09-01 18:51:01 +00:00
Ian Lepore
633dbf2e1b Adjust ofwbus and simplebus to attach at BUS_PASS_ORDER_MIDDLE, so that
a platform can attach some other bus first if necessary.
2014-08-05 17:32:47 +00:00
Ian Lepore
2d12d35cf8 Set ofwbus and simplebus to attach during BUS_PASS_BUS. 2014-08-05 16:31:03 +00:00
Andrew Turner
27521ff8e4 Add the start of the ARM platform code. This is based on the PowerPC
platform code, it is expected these will be merged in the future when the
ARM code is more complete.

Until more boards can be tested only use this with the Raspberry Pi and
rrename the functions on the other SoCs.

Reviewed by:	ian@
2014-05-17 11:27:36 +00:00
Ian Lepore
a41679c945 Catch up with last-second name change. 2014-02-16 03:34:07 +00:00
Ian Lepore
731ff010b9 Add a helper routine to depth-search the device tree for a node with a
matching 'compatible' property.  This probably has a short half-life (as
do most of the fdt_ functions), but it helps solve some near-term needs
until we work out the larger problems of device instantiation order
versus the order of things in the fdt data.
2014-02-16 03:00:59 +00:00
Warner Losh
cca7539760 Better nomatch messages: include compat string. Also, flag devices as
disabled in the successful probe message, but leave what that means to
the actual driver (no semantic changes).
2014-02-12 04:56:34 +00:00
Nathan Whitehorn
65d08437ef Move Open Firmware device root on PowerPC, ARM, and MIPS systems to
a sub-node of nexus (ofwbus) rather than direct attach under nexus. This
fixes FDT on x86 and will make coexistence with ACPI on ARM systems easier.
SPARC is unchanged.

Reviewed by:	imp, ian
2014-02-05 14:44:22 +00:00
Ian Lepore
add35ed5b8 Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352.  Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
2014-02-02 19:17:28 +00:00
Ian Lepore
b4122742a6 Be more robust with malformed interrupt config data. Instead of crashing
or going into a near-infinite loop, warn and make potentially-reasonable
assumptions.
2014-02-02 16:56:40 +00:00
Nathan Whitehorn
f18ac51a90 Fix missing offset. 2014-02-02 05:52:34 +00:00
Nathan Whitehorn
2b5bab93fb Allow nesting of simplebuses. 2014-02-02 05:41:12 +00:00
Nathan Whitehorn
06763f5e55 Provide a simpler and more standards-compliant simplebus implementation to
get the Routerboard 800 up and running with the vendor device tree. This
does not implement some BERI-specific features (which hopefully won't be
necessary soon), so move the old code to mips/beri, with a higher attach
priority when built, until MIPS interrupt domain support is rearranged.
2014-02-01 17:41:54 +00:00
Nathan Whitehorn
bbc6da03ef Open Firmware interrupt specifiers can consist of arbitrary-length byte
strings and include arbitrary information (IRQ line/domain/sense). When the
ofw_bus_map_intr() API was introduced, it assumed that, as on most systems,
these were either 1 cell, containing an interrupt line, or 2, containing
a line number plus a sense code. It turns out a non-negligible number of
ARM systems use 3 (or even 4!) cells for interrupts, so make this more
general.
2014-02-01 17:17:35 +00:00
Ian Lepore
f2a7dc989c Be more robust with malformed interrupt config data. Instead of crashing
or going into a near-infinite loop, warn and make potentially-reasonable
assumptions.

Reviewed by:	brooks, nwhitehorn
2014-01-24 00:42:18 +00:00
Ian Lepore
02c7dba919 Remove dev/fdt/fdt_pci.c, which was code specific to Marvell ARM SoCs,
related to setting up static device mappings.  Since it was only used by
arm/mv/mv_pci.c, it's now just static functions within that file, plus
one public function that gets called only from arm/mv/mv_machdep.c.
2014-01-05 22:36:34 +00:00
Nathan Whitehorn
dcd08302e5 Retire machine/fdt.h as a header used by MI code, as its function is now
obsolete. This involves the following pieces:
- Remove it entirely on PowerPC, where it is not used by MD code either
- Remove all references to machine/fdt.h in non-architecture-specific code
  (aside from uart_cpu_fdt.c, shared by ARM and MIPS, and so is somewhat
  non-arch-specific).
- Fix code relying on header pollution from machine/fdt.h includes
- Legacy fdtbus.c (still used on x86 FDT systems) now passes resource
  requests to its parent (nexus). This allows x86 FDT devices to allocate
  both memory and IO requests and removes the last notionally MI use of
  fdtbus_bs_tag.
- On those architectures that retain a machine/fdt.h, unused bits like
  FDT_MAP_IRQ and FDT_INTR_MAX have been removed.
2014-01-05 18:46:58 +00:00
Nathan Whitehorn
ad6ea57585 Remove fdt_pic_table code from MIPS, PowerPC, and x86, as it is no longer
used by anything. The equivalent functionality is provided by the PIC drivers
themselves on PowerPC and this is a no-op on MIPS and x86.
2014-01-04 21:19:20 +00:00
Nathan Whitehorn
67dbd33ca8 Reimplement fdt_intr_to_rl() in terms of OFW_BUS_MAP_INTR() and
OFW_BUS_CONFIG_INTR(). This function is only used by simplebus, so will
likely be moved there in the future.
2014-01-04 21:14:33 +00:00
Nathan Whitehorn
fc54707f7d Remove dead code. Most of this was in an #if 0 block; the rest is not
used and duplicates functionality in dev/ofw.
2013-12-17 14:51:47 +00:00
Nathan Whitehorn
5cd2b97cd0 Teach nexus(4) about Open Firmware (e.g. FDT) on ARM and MIPS, retiring
fdtbus in most cases. This brings ARM and MIPS more in line with existing
Open Firmware platforms like sparc64 and powerpc, as well as preventing
double-enumeration of the OF tree on embedded PowerPC (first through nexus,
then through fdtbus).

This change is also designed to simplify resource management on FDT platforms
by letting there exist a platform-defined root bus resource_activate() call
instead of replying on fdtbus to do the right thing through fdt_bs_tag.
The OFW_BUS_MAP_INTR() and OFW_BUS_CONFIG_INTR() kobj methods are also
available to implement for similar purposes.

Discussed on:	-arm, -mips
Tested by:	zbb, brooks, imp, and others
MFC after:	6 weeks
2013-11-05 13:48:34 +00:00
Ian Lepore
3110e7eed8 Move remaining code and data related to static device mapping into the
new devmap.[ch] files.  Emphasize the MD nature of these things by using
the prefix arm_devmap_ on the function and type names (already a few of
these things found their way into MI code, hopefully it will be harder to
do by accident in the future).
2013-11-04 22:45:26 +00:00
Ian Lepore
2bd843b4da This files should have been included in r257648. 2013-11-04 20:00:21 +00:00
Luiz Otavio O Souza
09b2544b71 Remove all the instances of '#undef DEBUG' from kernel.
Suggested by:	rpaulo
Approved by:	adrian (mentor)
2013-10-25 18:38:44 +00:00
Nathan Whitehorn
6751474523 Use common OFW root code to set up fdtbus. This is an almost purely
negative diff that should improve reliability somewhat. There should be
no differences in behavior -- please report any that crop up. This has been
tested on ARM and PPC systems.

Tested by:	ray
2013-10-25 13:29:07 +00:00
Nathan Whitehorn
238b0483a7 Do not map IRQs twice. This fixes PowerPC/FDT systems with multiple PICs,
which would try to treat the previously-mapped interrupts from
fdt_decode_intr() as interrupt line numbers on the same parent PIC.
2013-10-24 15:44:29 +00:00
Nathan Whitehorn
755c959170 Remove OF_instance_to_package() hack for FDT and replace with use of the
generic OF_xref_phandle() API universally. Also replace some related
explicit uses of fdt32_to_cpu() with OF_getencprop() calls.
2013-10-23 14:04:09 +00:00
Brooks Davis
fdd228fcd6 MFP4: 223121 (PIC portion), 225861, 227822, 229692 (PIC only), 229693,
230523, 1123614

Implement a driver for Robert Norton's PIC as an FDT interrupt
controller. Devices whose interrupt-parent property points to a beripic
device will have their interrupt allocation, activation , and setup
operations routed through the IC rather than down the traditional bus
hierarchy.

This driver largely abstracts the underlying CPU away allowing the
PIC to be implemented on CPU's other than BERI. Due to insufficient
abstractions a small amount of MIPS specific code is currently required
in fdt_mips.c and to implement counters.

MFC after:	3 days
Sponsored by:	DARPA/AFRL
2013-10-22 15:29:59 +00:00
Nathan Whitehorn
7f5392e292 Allow lots of interrupts (useful on multi-domain platforms) and do not
set device_quiet() on all devices attached under nexus(4).
2013-10-22 14:08:57 +00:00
Nathan Whitehorn
17593f8612 Standards-conformance and code deduplication:
- Use bus reference phandles in place of FDT offsets as IRQ domain keys
- Unify the identical macio/fdt/mambo OpenPIC drivers into one
- Be more forgiving (following ePAPR) about what we need from the device
  tree to identify an OpenPIC
- Correctly map all IRQs into an interrupt domain
- Set IRQ_*_CONFORM for interrupts on an unknown PIC type instead of
  failing attachment for that device.
2013-10-22 14:07:57 +00:00
Brooks Davis
1f40dbc854 MFP4: 223121 (FDT infrastructure portion)
Implement support for interrupt-parent nodes in simplebus.  The current
implementation requires that device declarations have an interrupt-parent
node and that it point to a device that has registered itself as a
interrupt controller in fdt_ic_list_head and implements the fdt_ic
interface.

Sponsored by:   DARPA/AFRL
2013-10-21 21:13:01 +00:00
Nathan Whitehorn
457639351b Some nexus devices add wildcard children. Since fdtbus_probe returned
BUS_PROBE_DEFAULT, it would attach to them all, producing both many
fdtbus instances and preventing other devices from attaching. Instead
return BUS_PROBE_NOWILDCARD, which exists for exactly this purpose.
2013-10-20 18:38:19 +00:00
Marcel Moolenaar
cb34ed4434 Add basic support for FDT to i386 & amd64. This change includes:
1.  Common headers for fdt.h and ofw_machdep.h under x86/include
    with indirections under i386/include and amd64/include.
2.  New modinfo for loader provided FDT blob.
3.  Common x86_init_fdt() called from hammer_time() on amd64 and
    init386() on i386.
4.  Split-off FDT specific low-level console functions from FDT
    bus methods for the uart(4) driver. The low-level console
    logic has been moved to uart_cpu_fdt.c and is used for arm,
    mips & powerpc only. The FDT bus methods are shared across
    all architectures.
5.  Add dev/fdt/fdt_x86.c to hold the fdt_fixup_table[] and the
    fdt_pic_table[] arrays. Both are empty right now.

FDT addresses are I/O ports on x86. Since the core FDT code does
not handle different address spaces, adding support for both I/O
ports and memory addresses requires some thought and discussion.
It may be better to use a compile-time option that controls this.

Obtained from:	Juniper Networks, Inc.
2013-05-21 03:05:49 +00:00
Aleksandr Rybalko
5ac9d9890f Return "start" and "end" to u_long world. Because rman handle addresses as
u_long too.

Discussed with:	ian@
Pointy hat to:	ray@
2013-03-19 14:15:41 +00:00
Aleksandr Rybalko
ee52bd5713 Cast "start" to u_long. Temporary fix to unbreak tinderbox.
We need here max possible storage or dynamic, depend on size of address cell.
2013-03-19 13:13:26 +00:00
Aleksandr Rybalko
36581e4785 Don't hesitate to ask parent to setup IRQ finally.
Sponsored by:	The FreeBSD Foundation
2013-03-18 23:51:39 +00:00
Aleksandr Rybalko
bf9d6206b0 Allow simplebus to attach to another simplebus.
Sponsored by:	The FreeBSD Foundation
2013-03-18 23:41:19 +00:00
Aleksandr Rybalko
089dfb09f1 Hide "no default resources for" warning under bootverbose. It's ok to use
optional resources.

Sponsored by:	The FreeBSD Foundation
2013-03-18 23:38:15 +00:00
Aleksandr Rybalko
2737a5a925 Allow simplebus to attach in less strict way, when "simple-bus" listed on not
first position of compatible property, so simplebus driver can be generic
driver for any bus listed as compatible with "simple-bus".

Sponsored by:	The FreeBSD Foundation
2013-03-18 23:35:01 +00:00
Aleksandr Rybalko
4117c1db9e o Switch to use physical addresses in rman for FDT.
o Remove vtophys used to translate virtual address to physical in case rman carry virtual.

Sponsored by:	The FreeBSD Foundation
2013-03-18 15:18:55 +00:00
Oleksandr Tymoshenko
8966173312 Bump per-device interrupt limit to more reasonable default.
Some hardware like DMA and GPIO controllers might require
more then 8 interrupts per device instance.

Submitted by:	Daisuke Aoyama <aoyama at peach.ne.jp>
Discussed with:	gber@, raj@
2013-02-23 22:58:04 +00:00
Robert Watson
2029d071db Merge Perforce changeset 219933 and portions of 219962 (omits changes to
unmerged BERI DTS files) to head:

  Use the OFW compatible string "mips,mips4k" rather than
  "mips4k,cp0" for interrupt control using MIPS4k CP0.

  Suggested by:   thompsa

  Implement a MIPS FDT PIC decode routine to use when no PIC has been
  configured, which assumes a cascade back to the nexus bus (e.g.,
  the on-board CP0 interrupt management parts on the MIPS).  If the
  soc bus in a MIPS DTS file is declared as "mips4k,cp0"-compatible,
  then this will be enabled.  This is sufficient to allow IRQs to be
  configured on BERI.

Sponsored by:	DARPA, AFRL
2013-01-12 16:09:33 +00:00
Robert Watson
ff82fb46d4 When a partially initialised FDT-based device instance can't attach,
perhaps due to an interrupt configuration problem, do not try to free
device ivars that have not yet have been allocated.

MFC after:	1 week
Reviewed by:	gonzo
Sponsored by:	DARPA, AFRL
2012-12-30 21:10:48 +00:00
Oleksandr Tymoshenko
1d1ffd9efb Add fdt_get_reserved_regions function. API is simmilar to fdt_get_mem_regions
It returns memory regions restricted from being used by kernel. These
regions are dfined in "memreserve" property of root node in the same
format as "reg" property of /memory node
2012-11-30 03:08:49 +00:00
Grzegorz Bernacki
68b7bd0469 If virtual addresses are not set use one to one mapping.
Do not map memory and IO space at address 0.

Obtained from: Semihalf
2012-09-14 09:45:13 +00:00
Grzegorz Bernacki
2c99056488 Add fdt_get_unit() function.
Obtained from:	Semihalf
2012-09-14 09:36:35 +00:00
Grzegorz Bernacki
2f0da24b47 Set busaddr and bussize to 0 when fdt_get_range() fails.
Obtained from:	Semihalf
2012-09-14 09:33:35 +00:00