Commit Graph

245 Commits

Author SHA1 Message Date
andrew
87021e009b Restrict where we need to define fdt_fixup_table to just PowerPC and
Marvell.

Sponsored by:	ABT Systems Ltd
2016-09-23 14:11:23 +00:00
jhibbits
a462acb7c6 Add a ofw_parse_bootargs function, and use it for powerpc
Summary:
If the environment variable is set, U-boot adds a 'bootargs' property to
/chosen.  This is already handled by ARM and MIPS, but should be handled in a
central location.  For now, ofw_subr.c is a good place until we determine if it
should be moved to init_main.c, or somewhere more central to all architectures.

Eventually arm and mips should be modified to use ofw_parse_bootargs() as well,
rather than using the duplicate code already.

Reviewed By: adrian
Differential Revision: https://reviews.freebsd.org/D7846
2016-09-21 02:28:39 +00:00
jhibbits
1592bb3c79 Check all compatible strings on uart devices in powerpc
Summary:
Some device trees put "fsl,ns16650" first in the compatible list.  This causes
the probe code to choke, even though the device is compatible with ns16650, and
has it listed later in the tree.

Reviewed by:	nwhitehorn
MFC after:	1 week
Differential Revision: https://reviews.freebsd.org/D7676
2016-08-28 21:31:21 +00:00
mmel
28257ccca8 INTRNG: Rework handling with resources. Partially revert r301453.
- Read interrupt properties at bus enumeration time and store
   it into global mapping table.
 - At bus_activate_resource() time, given mapping entry is resolved and
   connected to real interrupt source. A copy of mapping entry is attached
   to given resource.
 - At bus_setup_intr() time, mapping entry stored in resource is used
   for delivery of requested interrupt configuration.
 - For MSI/MSIX interrupts, mapping entry is created within
   pci_alloc_msi()/pci_alloc_msix() call.
 - For legacy PCI interrupts, mapping entry must be created within
   pcib_route_interrupt() by pcib driver itself.

Reviewed by: nwhitehorn, andrew
Differential Revision: https://reviews.freebsd.org/D7493
2016-08-19 10:52:39 +00:00
mmel
46f0e67165 OFWPCI: Don't strip RF_ACTIVE from flags when parent bus method is called.
Reviewed by:	nwhitehorn
MFC after:	3 weeks
2016-08-14 05:10:26 +00:00
trasz
0b7d27d494 Remove NULL checks after M_WAITOK allocations from sys/dev/ofw/.
MFC after:	1 month
2016-08-09 15:55:14 +00:00
stevek
b4978a1bf0 Add hw.fdt sysctl node.
Make FDT blob available via opaque hw.fdt.dtb sysctl, if a DTB has been
installed by the time sysctls are registered.

Reviewed by:	andrew
Approved by:	sjg (mentor)
Sponsored by:	Juniper Networks, Inc.
Differential Revision:	https://reviews.freebsd.org/D7411
2016-08-06 18:48:47 +00:00
mmel
74312a0e2f OFWPCI: Add support for NEW_PCIB.
MFC after: 3 weeks
2016-07-17 13:43:46 +00:00
mmel
f4f3784297 OFWPCI: Improve resource handling.
- add new rman for prefetchable memory. Is used only if given 'ranges'
  property contains prefetchable memory range.

- not all ranges in 'ranges' property are subject for rman's filling.
  Tegra for example, have two addition records which are used for
  'pci 'register' -> 'assigned-address' -> 'ranges' machinery.
  Add sc_ranges_mask for masking not rman related ranges.

- consistently pass unknown (not managed at this level) resources
  allocation/release/adjust requests to parent.

MFC after: 3 weeks
2016-07-17 13:43:00 +00:00
mmel
fdc5ebf674 OFWPCI: Fix style(9).
No functional change.

MFC after: 3 weeks
2016-07-11 08:24:04 +00:00
skra
612e6958e4 INTRNG - change the way how an interrupt mapping data are provided
to the framework in OFW (FDT) case.

This is a follow-up to r301451.

Differential Revision:	https://reviews.freebsd.org/D6634
2016-06-05 16:20:12 +00:00
ian
3c784f29dd Fix a typo in a comment. 2016-05-26 16:53:50 +00:00
loos
05535adac6 Move the OFW iicbus code to dev/iicbus to stop polluting dev/ofw with
unrelated code.

Discussed with:		nwhitehorn (a long time ago)
2016-05-24 01:33:49 +00:00
andrew
cb60d23248 Add a pcib interface for use by interrupt controllers that need to
translate the pci rid to a controller ID. The translation could be based
on the 'msi-map' OFW property, a similar ACPI option, or hard-coded for
hardware lacking the above options.

Reviewed by:	wma
Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
2016-05-16 09:31:44 +00:00
mmel
ab1a7752cd OFWIICBUS: Make ofwiicbus_devclass externaly visible.
It's needed for binding of iic controllers.
2016-05-15 15:13:56 +00:00
gonzo
23a2d5f593 Add OF_prop_free function as a counterpart for OF_*prop_alloc
- Introduce new OF API function OF_prop_free to free memory allocated by
  OF_getprop_alloc and OF_getencprop_alloc. Current code just calls free(9)
  with M_OFWPROP memory class which assumes knowledge about OF_*prop_alloc
  functions' internals and leads to unneccessary code coupling

- Convert some of the free(..., M_OFWPROP) instances to OF_prop_free

Files affected by this commit are the ones I was able to test on real
hardware. The rest of free(..., M_OFWPROP) instances will be handled with
idividual maintainers

Reviewed by:	andrew
Differential Revision:	https://reviews.freebsd.org/D6315
2016-05-11 18:20:02 +00:00
zbb
fc42f4865c Reduce OFW PCI code duplication - involves ARM, PPC and SPARC64
Import portions of the PowerPC OF PCI implementation into new file
"ofwpci.c", common for other platforms. The files ofw_pci.c and ofw_pci.h
from sys/powerpc/ofw no longer exist. All required declarations are moved
to sys/dev/ofw/ofwpci.h. This creates a new ofw_pci_write_ivar() function
and modifies some others methods. Most functions contain existing ppc
implementations in the majority unchanged. Now there is no need to have
multiple identical copies of methods for various architectures.

Requested by:  jhibbits
Reviewed by:   jhibbits, marius
Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Differential Revision: https://reviews.freebsd.org/D4879
2016-03-29 15:19:56 +00:00
jhibbits
720f47c9ed Use uintmax_t (typedef'd to rman_res_t type) for rman ranges.
On some architectures, u_long isn't large enough for resource definitions.
Particularly, powerpc and arm allow 36-bit (or larger) physical addresses, but
type `long' is only 32-bit.  This extends rman's resources to uintmax_t.  With
this change, any resource can feasibly be placed anywhere in physical memory
(within the constraints of the driver).

Why uintmax_t and not something machine dependent, or uint64_t?  Though it's
possible for uintmax_t to grow, it's highly unlikely it will become 128-bit on
32-bit architectures.  64-bit architectures should have plenty of RAM to absorb
the increase on resource sizes if and when this occurs, and the number of
resources on memory-constrained systems should be sufficiently small as to not
pose a drastic overhead.  That being said, uintmax_t was chosen for source
clarity.  If it's specified as uint64_t, all printf()-like calls would either
need casts to uintmax_t, or be littered with PRI*64 macros.  Casts to uintmax_t
aren't horrible, but it would also bake into the API for
resource_list_print_type() either a hidden assumption that entries get cast to
uintmax_t for printing, or these calls would need the PRI*64 macros.  Since
source code is meant to be read more often than written, I chose the clearest
path of simply using uintmax_t.

Tested on a PowerPC p5020-based board, which places all device resources in
0xfxxxxxxxx, and has 8GB RAM.
Regression tested on qemu-system-i386
Regression tested on qemu-system-mips (malta profile)

Tested PAE and devinfo on virtualbox (live CD)

Special thanks to bz for his testing on ARM.

Reviewed By: bz, jhb (previous)
Relnotes:	Yes
Sponsored by:	Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D4544
2016-03-18 01:28:41 +00:00
mmel
35e1f10d38 Use EARLY_DRIVER_MODULE() with BUS_PASS_BUS priority for ofw_gpiobus
and ofw_iicbus. This causes enumeration of gpiobus/iicbus at the base driver
attach time. Due to this, childern drivers can be also attached early.
2016-03-15 15:24:18 +00:00
zbb
e9cf712fda Revert r295756:
Extract common code from PowerPC's ofw_pci

Import portions of the PowerPC OF PCI implementation into
new file "ofw_pci.c", common for other platforms. The files ofw_pci.c and
ofw_pci.h from sys/powerpc/ofw no longer exist. All required declarations
are moved to sys/dev/ofw/ofw_pci.h.

This creates a new ofw_pci_write_ivar() function and modifies
ofw_pci_nranges(), ofw_pci_read_ivar(), ofw_pci_route_interrupt()
methods.
Most functions contain existing ppc implementations in the majority
unchanged. Now there is no need to have multiple identical copies
of methods for various architectures.

Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Reviewed by:   jhibbits, mmel
Differential Revision: https://reviews.freebsd.org/D4879

This needs to return to the drawing board as it breaks both
PowerPC and Sparc64 build.

Pointed out by: jhibbits
2016-02-20 12:28:20 +00:00
jhibbits
f8385663ee Introduce a RMAN_IS_DEFAULT_RANGE() macro, and use it.
This simplifies checking for default resource range for bus_alloc_resource(),
and improves readability.

This is part of, and related to, the migration of rman_res_t from u_long to
uintmax_t.

Discussed with:	jhb
Suggested by:	marcel
2016-02-20 01:32:58 +00:00
zbb
9fb865d099 Fix build for i386 and arm64 after r295755
- Take bus_space_tag_t type into consideration when returning
  default, zero value.
- Include missing rman.h required by ofw_pci.h
2016-02-18 15:44:45 +00:00
zbb
e22231d219 Extract common code from PowerPC's ofw_pci
Import portions of the PowerPC OF PCI implementation into
new file "ofw_pci.c", common for other platforms. The files ofw_pci.c and
ofw_pci.h from sys/powerpc/ofw no longer exist. All required declarations
are moved to sys/dev/ofw/ofw_pci.h.

This creates a new ofw_pci_write_ivar() function and modifies
ofw_pci_nranges(), ofw_pci_read_ivar(), ofw_pci_route_interrupt() methods.
Most functions contain existing ppc implementations in the majority
unchanged. Now there is no need to have multiple identical copies
of methods for various architectures.

Submitted by:  Marcin Mazurek <mma@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Annapurna Labs
Reviewed by:   jhibbits, mmel
Differential Revision: https://reviews.freebsd.org/D4879
2016-02-18 13:07:21 +00:00
zbb
d520d79a17 Fix bug in ofwbus_release_resource() for non-ofwbus descendants
Resource list for devices that are not ofwbus descendants, but
got to ofwbus method via bus_generic_release_resource() call chain,
cannot be found using BUS_GET_RESOURCE_LIST() used by ofwbus.
In that case, changing device's resource list should be avoided
(will not contain resource list prepared by ofw or simplebus).

Pointy-hat to: zbb
Reviewed by:   wma
Obtained from: Semihalf
Sponsored by:  Cavium
Differential Revision: https://reviews.freebsd.org/D5304
2016-02-18 11:53:57 +00:00
andrew
05274f8a8b Allow callers of OF_decode_addr to get the size of the found mapping. This
will allow for code that uses the old fdt_get_range and fdt_regsize
functions to find a range, map it, access, then unmap to replace this, up
to and including the map, with a call to OF_decode_addr.

As this function should only be used in the early boot code the unmap is
mostly do document we no longer need the mapping as it's a no-op, at least
on arm.

Reviewed by:	jhibbits
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D5258
2016-02-16 15:18:12 +00:00
adrian
93fc03e6d8 Teach ofw_bus_parse_xref_list_alloc to be able to return the length of the parsed list.
Currently, there is no easy way to know in advance how many entries a list parsed by
ofw_bus_parse_xref_list_alloc() in sys/dev/ofw/ofw_bus_subr.c has.

This patch:

* teaches the existing function about handling idx == -1 and returning how big
  the set is; then renames it as _internal;
* create a new function that asserts idx != -1, so the old API is maintained;
* add a new function that returns just the list length.

Submitted by:	Stanislav Galabov <sgalabov@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D5043
2016-02-09 03:35:40 +00:00
andrew
5d125a1967 Fix the value we print when the size is too large. While here fix the types
we cast to to be unsigned as the data is unsigned.

Reviewed by:	ian
2016-01-27 17:47:07 +00:00
andrew
9893ec50e0 When finding the physical address of a device allow intermediate addresses
to be 64-bit on 32-bit architectures. It is not uncommon for device trees
to use the upper 32-bits to store what effectively is an index into the
parent ranges property. In this case, when running with a 32-bit bus_addr_t
and bus_size_t, we would previously truncate the address, this may then
incorrectly match the wrong range, and return the wrong address.

Tested by:	bz (earlier version)
2016-01-27 17:33:31 +00:00
jhibbits
31bb8ee5bd Convert rman to use rman_res_t instead of u_long
Summary:
Migrate to using the semi-opaque type rman_res_t to specify rman resources.  For
now, this is still compatible with u_long.

This is step one in migrating rman to use uintmax_t for resources instead of
u_long.

Going forward, this could feasibly be used to specify architecture-specific
definitions of resource ranges, rather than baking a specific integer type into
the API.

This change has been broken out to facilitate MFC'ing drivers back to 10 without
breaking ABI.

Reviewed By: jhb
Sponsored by:	Alex Perez/Inertial Computing
Differential Revision: https://reviews.freebsd.org/D5075
2016-01-27 02:23:54 +00:00
zbb
dfc2b357e6 Do not destroy input buffer of the OF_getencprop() function on error
Currently when the OF_getprop() function returns with error,
the caller (OF_getencprop()) still changes the buffer endiannes.
This may destroy the default value passed in the input buffer if
used on a Little Endian platform.

Reviewed by:   mmel
Submitted by:  Zbigniew Bodek <zbb@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Cavium
2016-01-25 14:42:44 +00:00
andrew
988b55c72d Fix the style of the reading of a nodes xref to make it readable. 2016-01-24 17:09:11 +00:00
andrew
1ca0aa6a34 Remove fdt_fixup_table from architectures where it's unneeded. We only make
use of fdt_fixup_table on PowerPC and ARM. As such we can remove it from
other architectures as it's unneeded.

Reviewed by:	nwhitehorn
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D5013
2016-01-21 16:48:01 +00:00
mmel
6e7de4e62d OFW: Fix ofw_bus_string_list_to_array() function.
Originally committed version was unfinished and didn't work at all,
because I took it from the wrong WIP branch by mistake.

Approved by:	kib (mentor)
2016-01-20 14:49:01 +00:00
nwhitehorn
b6345059e4 Make using the #address-cells property on the interrupt parent in device
tree parsing opt-out rather than opt-in. All FDT-based systems as well as
PowerPC systems with real Open Firmware use the CHRP-derived binding that
includes it, which makes SPARC the odd man out here. Making it opt-out
avoids astonishment on new platform bring up.
2016-01-02 19:28:35 +00:00
ian
4e5aee5484 Fix the detection of IO/memory space changing across busses when the bus
is not pci (and thus where, ironically, the whole situation is meaningless).

This was not an error in the original code, it was introduced during my
refactoring to commonize the routine.  A small change a few lines above
drove the need to make this change, and the error didn't show up on the
platforms I initially tested with.
2015-12-22 00:53:19 +00:00
ian
80bb89b864 Include machine/_bus.h so that bus_space_[tag|handle]_t will be available.
It appears that all platforms except aarch64 are getting the file via
various header pollution, and ensuring _bus.h is included before any
openfirmware headers in every consumer of ofw/fdt stuff seems like more of
a career path than a task, so I'm taking this easy way out.
2015-12-21 23:47:49 +00:00
ian
f2c27d0528 Implement OF_decode_addr() for arm. Move most of powerpc's implementation
into a new function that other platforms can share.

This creates a new ofw_reg_to_paddr() function (in a new ofw_subr.c file)
that contains most of the existing ppc implementation, mostly unchanged.
The ppc code now calls the new MI code from the MD code, then creates a
ppc-specific bus_space mapping from the results. The new arm implementation
does the same in an arm-specific way.

This also moves the declaration of OF_decode_addr() from ofw_machdep.h to
openfirm.h, except on sparc64 which uses a different function signature.

This will help all FDT platforms to set up early console access using
OF_decode_addr().
2015-12-21 18:07:32 +00:00
imp
a340182ee7 Create a simplebus PNP info wrapper.
Differential Review: https://reviews.freebsd.org/D4517
2015-12-18 05:29:22 +00:00
andrew
567d111884 Support the variant of the interrupt-map property where the parent bus has
the #address-cells property set. For this we need to read more data before
the parent interrupt description.

this is only enabled on arm64 for now as it's not quite compliant with the
ePAPR spec. We should use a default of 2 where the #address-cells property
is missing, however this will need further testing across architectures.

Obtained from:	ABT Systems Ltd
Sponsored by:	SoftIron Inc
Differential Revision:	https://reviews.freebsd.org/D4518
2015-12-17 17:00:04 +00:00
mmel
7c84ce2c10 OFW_IICBUS: Register ofw_iicbus node.
The iicbus can be referenced from other nodes in DT.

Approved by:	kib (mentor)
2015-12-13 08:23:45 +00:00
mmel
233abe7690 OFW: Add helper functions for parsing xref based lists.
By using this functions, we can parse a list of tuples, each of them holds
xref and variable number of values.
This kind of list is used in DT for clocks, gpios, resets ...

Discussed with:	ian, nwhitehorn
Approved by:	kib (mentor)
Differential Revision: https://reviews.freebsd.org/D4316
2015-12-13 08:17:49 +00:00
mmel
f4f37aad61 OFW: Move code for searching interrupt parent into separate function.
It can be used by interrupt controller drivers.

Approved by:	kib (mentor)
2015-12-02 14:21:16 +00:00
andreast
348c4c582f Improve r290373, do a runtime check rather than a compile time switch. I
learned that the Power8 and the PS3 have a mix of OFW and FDT. Both have AIM
defined. But currently they are not affected. They have no I2C devices under
OFW.

This version was tested on a Quad G5 and build tested for armv6*.

Discussed with	nwhitehorn@
Reviewed by:	ian@
2015-11-08 21:06:51 +00:00
andreast
92a607efab Add a compile time switch to distinguish between 7-bit and 8-bit I2C address
usage. The comment in the code should explain the situation.

Discussed with:	 ian@
2015-11-04 22:46:30 +00:00
ian
12b6417dcc Fix parsing of I2C addresses properties in fdt data. I2C address is
represented in 7-bits format in DT files, but system expect it in 8-bit
format.  Also, fix two drivers that locally hack around this bug.

Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-10-21 15:41:16 +00:00
zbb
6bdb8af563 Limit ofw_cpu_early_foreach() to CPUs only
On some platforms, the /cpus node contains cpu-to-cluster
map which deffinitely is not a CPU node. Its presence was
causing incrementing of "id" variable and reporting more
CPUs available than it should.
To make "id" valid, increment it only when an entry really
is a CPU device.

Reviewed by:   andrew
Obtained from: Semihalf
Sponsored by:  The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3216
2015-07-28 13:16:08 +00:00
gonzo
07e139cf37 OF_getencprop_alloc shouldn't be used to get string value. If string
length + 1 is not divisible by 4 this function returns NULL property
value. Otherwise - string with each 4 letters inverted
2015-07-25 00:58:50 +00:00
andrew
0ceb4ab18a Fix an infinite loop when a node doesn't have an interrupt-parent property.
Submitted by:	Aleksey Kuleshov <rndfax@yandex.ru>
Differential Revision: https://reviews.freebsd.org/D3041
2015-07-15 13:28:25 +00:00
andrew
09018605c0 Also accept "ok" to enable a device, some vendor device trees use this when
they mean "okay"
2015-07-14 19:11:16 +00:00
imp
9d4e4ebe6d Add ofw_bus_find_child_by_phandle, a helper routine to find a device_t
child matchig a given phandle_t.

Differential Revision: https://reviews.freebsd.org/D2871
2015-06-20 04:48:48 +00:00