Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.2.12;
Pass clock provider's phandle to fdtbus_clock_controller_func.decode()
and update callers.

This allows to accomodate clock managers whose clocks are identified
directly by a clock instead of a pair (clock provider, index).

ok jmcneill@ on port-arm

branches: 1.1.2; 1.1.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Trailing whitespace

branches: 1.15.22;
Add ACPI support.

Rewrite the bcm2835 i2c driver as an interrupt-driven state machine. This
improves general system responsiveness when tranferring large amounts of
data on a single-core Pi board. This also includes:

Cleanup i2c bus acquire / release, centralizing all of the logic into
iic_acquire_bus() / iic_release_bus(). "acquire" and "release" hooks
no longer need to be provided by back-end controller drivers (only if
they need special handling, e.g. powering on the i2c controller).
This results in the removal of a bunch of rendundant code from each
back-end controller driver.

Assert that we are not in hard interrupt context in iic_acquire_bus(),
iic_exec(), and iic_release_bus().

Use fdtbus_attach_i2cbus

branches: 1.12.2;
A minimal change to prevent the Raspberry Pi i2c driver from
looping forever if the command buffer and data buffer are both
NULL. XXX This driver needs an overhaul.

Also, preemptively return an error if we get a 10-bit address,
because we don't yet handle them correctly.

If we don't get informed (via device properties) of child I2C devices,
don't assign an empty array to iba.iba_child_devices, as it will prevent
indirect configuration of the I2C bus from occurring.

Tested on Raspberry Pi (bcm2835), identical logical fix replicated
(and compile-tested) elsewhere.

PR port-arm/53171

branches: 1.10.2;
bcm2835_bsc: use fdt to enumerate i2c child devices

From jmcneill@

PR/52848: Brad Spencer: Comment out KASSERT, length 0 appears to be valid.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Update the kernhist(9) kernel history code to address issues identified
in PR kern/52639, as well as some general cleaning-up...

(As proposed on tech-kern@ with additional changes and enhancements.)

Details of changes:

* All history arguments are now stored as uintmax_t values[1], both in
the kernel and in the structures used for exporting the history data
to userland via sysctl(9). This avoids problems on some architectures
where passing a 64-bit (or larger) value to printf(3) can cause it to
process the value as multiple arguments. (This can be particularly
problematic when printf()'s format string is not a literal, since in
that case the compiler cannot know how large each argument should be.)

* Update the data structures used for exporting kernel history data to
include a version number as well as the length of history arguments.

* All [2] existing users of kernhist(9) have had their format strings
updated. Each format specifier now includes an explicit length
modifier 'j' to refer to numeric values of the size of uintmax_t.

* All [2] existing users of kernhist(9) have had their format strings
updated to replace uses of "%p" with "%#jx", and the pointer
arguments are now cast to (uintptr_t) before being subsequently cast
to (uintmax_t). This is needed to avoid compiler warnings about
casting "pointer to integer of a different size."

* All [2] existing users of kernhist(9) have had instances of "%s" or
"%c" format strings replaced with numeric formats; several instances
of mis-match between format string and argument list have been fixed.

* vmstat(1) has been modified to handle the new size of arguments in the
history data as exported by sysctl(9).

* vmstat(1) now provides a warning message if the history requested with
the -u option does not exist (previously, this condition was silently
ignored, with only a single blank line being printed).

* vmstat(1) now checks the version and argument length included in the
data exported via sysctl(9) and exits if they do not match the values
with which vmstat was built.

* The kernhist(9) man-page has been updated to note the additional
requirements imposed on the format strings, along with several other
minor changes and enhancements.

[1] It would have been possible to use an explicit length (for example,
uint64_t) for the history arguments. But that would require another
"rototill" of all the users in the future when we add support for an
architecture that supports a larger size. Also, the printf(3) format
specifiers for explicitly-sized values, such as "%"PRIu64, are much
more verbose (and less aesthetically appealing, IMHO) than simply
using "%ju".

[2] I've tried very hard to find "all [the] existing users of kernhist(9)"
but it is possible that I've missed some of them. I would be glad to
update any stragglers that anyone identifies.

Disable BSC0 on Raspberry Pi 3 and Zero W boards.

branches: 1.5.10;
If doing a read-only (that is, no initial command write phase) transfer,
do not send a 0-byte write to the device before performing data phase.

Catch NAKs from the device more often.

Should fix PR#48855 and maybe PR#48932.

branches: 1.3.2;
Initialise bsciichist only once, otherwise the kern_histories list
never ends.

branches: 1.2.4;
Mark a variable __diagused

PR 48668 from David H. Gutteridge

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
Add driver for Broadcom Serial Control (I²C) master on BCM2835.

No longer need to include acpi_i2c.h here.

Do the ACPI-specific get-child-devices dance in iic_attach(). This
obviously isn't ideal, but it funnels the issue into a central location
and provides for easier improvement later.

branches: 1.4.2;
Merge thorpej-cfargs2.

branches: 1.3.2; 1.3.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.2.2;
Add a device_t parameter to acpi_enter_i2c_devs. If non-NULL, all child
acpi_devnodes will be claimed by that device so we don't later try to
attach a duplicate device to that node at acpinodebus.

branches: 1.1.2; 1.1.6;
Add ACPI support.

As with ACPI, perform the fdtbus_register_i2c_controller() in a centralized
location.

Garbage-collect fdtbus_attach_i2cbus(); the regular iicbus_attach() is
sufficient now.

branches: 1.6.4; 1.6.14;
fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Change fdtbus_register_i2c_controller() to directly register the i2c_tag_t,
rather than the device and a set of functions (the only of which was to
return the i2c_tag_t anyway). Previously, this assumed only a single
i2c controller node per device_t, which is not true with an i2c mux.

Add missing call to fdtbus_register_i2c_controller(). This doesn't
affect basic child attachment, but would have broken other references
to the i2c controller in DT overlays.

branches: 1.2.2;
Remove superfluous checking for a "disable" property in the device_t
properties dictionary.

branches: 1.1.2;
Add ACPI support.

branches: 1.1.2; 1.1.4; 1.1.8;
Add driver for Broadcom Serial Control (I²C) master on BCM2835.

branches: 1.1.2;
Add bcm2835_bscvar.h

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.2.16;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.1.2; 1.1.18;
Add drivers to access the clock manager and pulse width modulator.

branches: 1.2.2;
Fix RCSIds

branches: 1.1.2;
Add drivers to access the clock manager and pulse width modulator.

Re-factor the console-related code into fdt_console.[ch]

Report UART clock.

fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.6.2;
Get rid of a4x bus_space tag from fdtbus_attach_args. The only consumer
of this was various com(4) glue so modify all of that to use the new
com_init_regs_stride instead.

Clean up initialization of com_regs structure, in preparation for
some additional changers.

branches: 1.4.2; 1.4.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.3.2; 1.3.4;
mark ISR as mpsafe, detect when this is the console

Set the correct com type

Add support for BCM2835 AUX UART.

Adjust register base and size

broadcom: ACPI: Add support for mini UART in ACPI mode.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.4.8;
Add emmc2 clock goop from mlelstv@

Match brcm,bcm2711-cprman

Pass clock provider's phandle to fdtbus_clock_controller_func.decode()
and update callers.

This allows to accomodate clock managers whose clocks are identified
directly by a clock instead of a pair (clock provider, index).

ok jmcneill@ on port-arm

branches: 1.1.2; 1.1.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.2.2;
Add bounce buffer support for ARM bus_dma(9). Add macros to help initialize
bus_dma_tag structures.

branches: 1.1.2; 1.1.4;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.17.2;
Fix off-by-one in channel count, from Mark Millard.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.15.8;
remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

Make the DMA halt procedure follow better the documentation.

Invoke callback routine for all DMA interrupts.
Pass status and error bits to callback instead of filtering them early.
Adjust the current only callback routine in the EMMC driver.

When halting a channel, abort the current DMA CB and reset the channel
before stopping DMA.

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

branches: 1.9.2;
return NULL when failing to establish interrupt

initialise ch_ih

improve error handling in bcm_dmac_alloc and disestablish the irq handler in bcm_dmac_free

Move DMA interrupt establishement to time of engine allocation so as to
allow the IPL to be specified by the driver using the DMA engine.

trust the firmware and use whatever it advertises between DMA0-DMA11

not sure how this compiles for me, but remove extra * on prop_dictionary_t decl

use dma channel mask from firmware

branches: 1.2.2;
fix a stupid bug at attach

bcm2835 dma controller driver

Data written to bcmdmac(4) should be in little-endian.

branches: 1.4.16; 1.4.32;
Invoke callback routine for all DMA interrupts.
Pass status and error bits to callback instead of filtering them early.
Adjust the current only callback routine in the EMMC driver.

branches: 1.3.2;
Move DMA interrupt establishement to time of engine allocation so as to
allow the IPL to be specified by the driver using the DMA engine.

Add a bunch of register offsets to read-only registers.

branches: 1.1.2;
bcm2835 dma controller driver

More dotg(4) removal.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
Provide dotg(4) - a driver for the Synposys DesignWare OTG USB IP found
in the RaspberryPI. The driver supports host mode and control, interrupt,
and bulk transfers only at this point.

Heavily based on the FreeBSD driver by Hans Petter Selasky.

Thanks to all who helped. Jared McNeill, Michael van Elst and other.

Merge thorpej-cfargs2.

branches: 1.11.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.10.2;
fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.8.16;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

Update for latest dwc2

Use IPL_VM for dwc2_intr and mark as MP safe where possible.

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

branches: 1.2.2;
Use IPL_SCHED for dwctwo(4) - no need for the KERNEL_LOCK.

branches: 1.1.4; 1.1.6; 1.1.8; 1.1.10; 1.1.14;
RPI DWC2 glue.

bcm283x: add SDHC_FLAG_NO_PWR0 quirk

Add SDHC_FLAG_NO_PWR0 quirk to restore previous behaviour with
SDHC_FLAG_32BIT_ACCESS flag.

fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Since we're using designated initialisers for compat data, we should
use a completely empty initializer for the sentinel.

Remove "struct of_compat_data" and replace its usage with
"struct device_compatible_entry"; they are ABI-compatible.

Fix several "loses const qualifier" bugs encountered during
this conversion.

Data written to bcmdmac(4) should be in little-endian.

branches: 1.38.2;
Fix build if NBCMDMAC is zero

Remove superfluous checking for a "disable" property in the device_t
properties dictionary.

Add support for brcm,bcm2711-emmc2

branches: 1.35.2;
Oops, don't match brcm,bcm2711-emmc2 here.

Thanks to jmcneill for pointing out my mistake

Match brcm,bcm2711-emmc2

Clean up leftover when converting intr_establish() to fdtbus_intr_establish().
The latter accept only flags 0 or FDT_INTR_MPSAFE. For both cases, it add
IST_LEVEL flag for underlying intr_establish() function.

OK skrll

branches: 1.32.2; 1.32.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Add driver for the bcm2835 internal SD controller. On boards with SDIO
Wi-Fi, the internal SD controller is used for the SD card slot and the
Arasan SDHCI controller is used for SDIO.

Disable SDR50 support, it is not reliable on these boards.

branches: 1.29.10;
Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

Invoke callback routine for all DMA interrupts.
Pass status and error bits to callback instead of filtering them early.
Adjust the current only callback routine in the EMMC driver.

Handle error when setting DMA transfer.

DDR50 and SDR104 don't seem to be stable here, so disable them

enable UHS support

Simplify sdhc(4) locking

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

Don't pipeline any DMA writes to eMMC.

Fixes PR/49463.

branches: 1.20.2;
Only use 128-bit mode when the transfer is a multiple of this.

From Jared (the arm periph guy)

vendor_transfer_data_dma callback takes a struct sdhc_softc now

SDHC_MAX_BLK_LEN_1024 needs to be shifted into caps reg

oops, SDHC_FLAG_NO_HS_BIT is still required

SDHC_FLAG_NO_HS_BIT should no longer be needed

Fix typo in previous

Make emmc use of dma controller optional and disable the bcmdmac for now.

It doesn't work for me.

cv_wait -> cv_timedwait for dma transfers, just to be safe

use 0 and 1 for states instead of 27 and 42

Add and enable DMA support for SD cards on Raspberry Pi/BCM2835.

Drop unused local-softc variable.

branches: 1.9.4;
Whitespace

branches: 1.8.4;
Trailing whitespace

reinstate SDHC_HIGH_SPEED_SUPP capability, and add SDHC_FLAG_NO_HS_BIT flag to workaround bcm2835 sdhc issue with many high speed cards

Don't set SDHC_HIGH_SPEED_SUPP in host caps as many cards stop responding
after the switch to high speed mode.

emmc supports 1k block size, so set SDHC_MAX_BLK_LEN_1024 in host caps

The BCM2835 reference says the SDHC_HIGH_SPEED bit in SDHC_HOST_CTL is
implemented, so add SDHC_HIGH_SPEED_SUPP to the software-implemented
SDHC_CAPABILITIES register.

Whitespace. *sigh*

Query the EMMC clock rate and use it if it's available.

branches: 1.1.2; 1.1.4; 1.1.6;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

bcm283x: add SDHC_FLAG_NO_PWR0 quirk

Add SDHC_FLAG_NO_PWR0 quirk to restore previous behaviour with
SDHC_FLAG_32BIT_ACCESS flag.

branches: 1.1.6;
Add BCM2835 EMMC acpi glue

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

bcm2835-fb seems byte-swapped to CPU when running in big-endian mode.

Sort headers. No binary changes.

branches: 1.9.14;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

branches: 1.8.2;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

allow board-specific ioctl() handlers

Add enable/disable polling hooks to genfb_ops.

branches: 1.5.6;
Fix up the VCONS_DRAW_INTR support and DDB.

From reinoud.

branches: 1.4.2; 1.4.6;
support WSDISPLAYIO_GET_FBINFO

branches: 1.3.2;
only print switching to fb message if genfb is console

If genfb.type=<int> is passed on cmdline, override the wsdisplay type
returned by WSDISPLAYIO_GTYPE ioctl.

add genfb glue

Pass the controller devhandle along to the GPIO layer.

fix mainly same typos as in my previous commit but outside sys/dev/dm.

Merge thorpej-cfargs2.

branches: 1.21.2;
Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files or typos.

branches: 1.20.2;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.19.2;
fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Add 'const char *xname' arg to fdtbus_interrupt_controller_func .establish

branches: 1.16.8;
off by one

remove debug printfs, add more compat strings.

Add support for devices with separate "init" and "default" pinctrl states.

Handle BCM2838 (bcm2711) SoC pecularities.

branches: 1.12.2;
Take a lead from sys/dev/gpio/gpio.c:gpio_intr_str and report edge vs
level. etc interrupt type.

From yarl-baudig

Trailing whitespace

Support configuration of alternate functions.

Define constants for representing the standard interrupt types
({pos,neg,double}-edge, {high,low}-level) from the FDT "interrupts"
bindings. Use these defined constants rather than magic numbers.

Fix previous; follow the binding spec for this device when decoding
interrupt specifiers.

branches: 1.7.2;
Add support for interrupts on GPIO pins. We support both FDT-driven
interrupt registration as well as the new GPIO interrupt interface.

Based on initial work by Brad Spencer.
PR kern/51676

branches: 1.6.2;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Trailing whitespace

spaces to tabs

Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.10;
Build fix for when there is no gpio in the kernel.

PR/48816: Compile fix for src/sys/arch/arm/broadcom/bcm2835_gpio.c

branches: 1.1.2;
add a driver for BCM2835 obio gpio

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Explicitly configure pin pull-down/up settings for SDIO.

Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

branches: 1.3.2; 1.3.4;
add a driver for BCM2835 obio gpio

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.16;
aprint_verbose -> aprint_debug

Add a function for adjusting the pin muxer in the GPIO block.
(This should probably be revisited later.)

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Explicitly configure pin pull-down/up settings for SDIO.

branches: 1.2.4;
add a driver for BCM2835 obio gpio

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.16;
Add a function for adjusting the pin muxer in the GPIO block.
(This should probably be revisited later.)

Undocumented register to multiplex emmc2 pins to legacy sdhc

branches: 1.5.8;
Handle BCM2838 (bcm2711) SoC pecularities.

branches: 1.4.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

add a driver for BCM2835 obio gpio

branches: 1.2.4; 1.2.8;
Trailing whitespace

branches: 1.1.2; 1.1.4; 1.1.8;
Add a function for adjusting the pin muxer in the GPIO block.
(This should probably be revisited later.)

implementationm -> implementation

s/periperal/peripheral/ in comments.

branches: 1.44.8;
bcm2835_intr.c: fix !MULTIPROCESSOR

Tested on Raspberry PI 3 model A+.

pic: Update ci_cpl in pic_set_priority callback.

Not all ICs need interrupts disabled to update the priority. DAIF accesses
are not cheap, so push the update of ci_cpl from pic_set_priority to the
IC's pic_set_priority callback, and let the IC driver determine whether
or not it needs interrupts disabled.

Rework Arm (32bit and 64bit) AP startup so that cpu_hatch doesn't sleep.

The AP initialisation code in cpu_init_secondary_processor will read and
initialise the required system registers and state for the BP to attach
and report.

Rework the interrupt handler code for this new sequence. Thankfully,
this removes a bunch of code for bcm2836mp.

The VFP detection handler on <= armv7 relies on the global undefined
handler being in place until the BP attaches vfp. That is, after the
APs have been spun up.

gicv3_its.c has a serialisation issue which is protected against in
the gicv3_its_cpu_init, which is called from cpu_hatch, with a spin
lock. The serialisation issue needs addressing more completely.

Tested on RPI3, Apple M1, QEMU, and lx2k

Fixes PR port-arm/56264:
diagnostic assertion "l->l_stat == LSONPROC" failed on RPI3

Fix build for uniprocessor.

Install IPI handler with non-NULL context.

A side effect of interrupt handlers with NULL context when using armpic
is that the interrupt handler is only called from interrupt context, not
when lowering spl!

PR port-arm/56264

Register all PICs when bcmicu1 is attached, in order to avoid calling
pic_add() from cpu_hatch(), which blocks for aarch64 kernel on RPI3.
This prevented MP kernel to boot due to KASSERT failure as described
in the PR.

This is a kind of a workaround; the real fix should be to

(a) reorganize cpu_hatch() for aarch64 and arm:
http://mail-index.netbsd.org/port-arm/2021/06/21/msg007320.html

(b) or change MI abstraction of ``MP ready'':
http://mail-index.netbsd.org/port-arm/2021/06/22/msg007327.html

However, still, this fix does not bring about any penalty, and it is
not good to leave RPI3 broken for months...

Tested on RPI3 (aarch64 MP, armv7hf MP) as well as RPI1 (armv6hf UP).

Move interrupt register definitions to driver.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Since we're using designated initialisers for compat data, we should
use a completely empty initializer for the sentinel.

Use device_compatible_entry / of_search_compatible() rather than
matching against multiple sets of compatibility strings.

Add 'const char *xname' arg to fdtbus_interrupt_controller_func .establish

interupt -> interrupt

branches: 1.32.6;
Various updates and improvements to cpu start up on arm/aarch64

- start sharing more code around the AP startup messaging.
- call arm_cpu_topology_set early so that ci_core_id is available for
drivers, e.g. bcm2835_intr.c
- both arm and aarch64 now have
- a static cpu_info_store array
- the same arm_cpu_{hatched,mbox}

use arm_cpu_mpidr() and fix arm64 builds.

ci_core_id isn't setup early enough after recent arm_cpu_topology
changes, so use ci_mpidr as a stop gap fix for cpuid

branches: 1.29.2;
Use PIC_IRQBASE_ALLOC for all pic_add calls and track/use each cpu irqbase

Use PIC_IRQBASE_ALLOC and allow conditional attachment of interrupt
handlers (for RPI4)

Account for the IRQ offset on the bcm2836.

Jared points out that interrupt_distribute(9) assumes that any interrupt
handle can be used as an input to the MD interrupt_distribute implementation
so we are forced to return the handle we got back from intr_establish().
Upshot is that the input to bcm2835_icu_fdt_disestablish() is ambiguous for
shared IRQs, rendering them un-disestablishable.

While here, make sure to actually bump the intr_refcnt, and add an
assertion on the value we get back from bcm2835_icu_fdt_decode_irq().

There are some devices on the bcm283x that share IRQs (notably, the i2c
controllers), but the generic ARM PIC code doesn't support this. Add a
workaround inspired by the GICv3 driver (thanks Jared for pointint it out).

Sprinkle KASSERTs

Sprinkle static

KNF

Whitespace

Fix to show counters of "bcm2836 pic" by "intrctl list" correctly.

Handle processor private interrupts better and add support for the PMU
interrupt.

Thanks to jmcneill for review and suggestions.

Sprinkle static

Add some more interrupt source names

Start CPUs more like aarch64 by using a cpu_mpidr array (if populated)
to map MPIDRs to an index for each CPU.

Towards big.LITTLE support.

branches: 1.15.2; 1.15.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

on RPI2, fix compile failure without options MULTIPROCESSOR.

Simplify array initialisation

Add driver for the bcm2835 internal SD controller. On boards with SDIO
Wi-Fi, the internal SD controller is used for the SD card slot and the
Arasan SDHCI controller is used for SDIO.

Call the correct ipi handlers for IPI_AST and IPI_KPREEMPT

IPIs should be IPL_HIGH according to rmind@

Fix bcm2836mp_pic_{un,}block_irqs to handle timer AND mailbox interrupts
if they're both passed. Thanks to nat@ for finding this.

Sprinkle some KASSERTs

Use a bit per IPI type in local mailbox 0 registers. Ok matt@

RPI2 MP support.

Thanks to Matt Thomas for making this possible with his changes to pic.c

Appease a KASSERT - will be remove when MULTIPROCESSOR RPI2 is fixed.

Spin up the non-boot CPUs, but don't allow cpu_boot_secondary_processors
to see them for now.

RPI2 nows works well with only the boot cpu.

Initial RPI2 support - it doesn't work yet. The generic timer gets messed
up somehow.

This commit changes the KVA layout of the RPI.

branches: 1.4.2;
DMA channel interrupt names

branches: 1.3.12;
Whitespace

branches: 1.2.2; 1.2.4;
Fix two copypasteos that resulted in interrupt strings being wrong for
(among other interrutps) the plcom(4) and the sdhc(4).

branches: 1.1.2;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Expand the bcm2835_intr_establish inline.

No functional change.

RPI2 MP support.

Thanks to Matt Thomas for making this possible with his changes to pic.c

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.18; 1.1.20;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

Merge thorpej-cfargs2.

branches: 1.16.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.15.8;
RPi4 UEFI firmware 1.1 reports the wrong IRQ for the VC mailbox. Use
polling mode for now until this is sorted out.

branches: 1.14.2;
Split bcm2835 mbox driver into separate fdt and acpi frontends.

Clean up leftover when converting intr_establish() to fdtbus_intr_establish().
The latter accept only flags 0 or FDT_INTR_MPSAFE. For both cases, it add
IST_LEVEL flag for underlying intr_establish() function.

OK skrll

branches: 1.12.2; 1.12.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

branches: 1.9.2;
Whitespace.

Mailbox improvements from mlelstv@

Serialise access to the mailbox and use interrupts.

XXX if (cold) should go

Ensure correctness of bus_dmamap_sync operations. Shouldn't affect RPI.

Trailing whitespace

branches: 1.5.2;
Whitespace

serialize bcmmbox_request

allow for a single board specific device to attach to the mbox driver

branches: 1.2.2; 1.2.4;
As we'll soon get boot-time information via the mailbox method, seperate
the actual access code into a seperate file that can be used by itself.

First pass at a VC mailbox driver.

Split bcm2835 mbox driver into separate fdt and acpi frontends.

branches: 1.5.20;
Mailbox improvements from mlelstv@

Serialise access to the mailbox and use interrupts.

XXX if (cold) should go

allow for a single board specific device to attach to the mbox driver

branches: 1.3.2; 1.3.4;
Change the mailbox handling so that the data value top 28 bits are used.

branches: 1.2.2;
As we'll soon get boot-time information via the mailbox method, seperate
the actual access code into a seperate file that can be used by itself.

First pass at a VC mailbox driver.

branches: 1.2.4;
RPi4 UEFI firmware 1.1 reports the wrong IRQ for the VC mailbox. Use
polling mode for now until this is sorted out.

branches: 1.1.2;
Split bcm2835 mbox driver into separate fdt and acpi frontends.

fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.6; 1.1.10;
Split bcm2835 mbox driver into separate fdt and acpi frontends.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Mailbox improvements from mlelstv@

Serialise access to the mailbox and use interrupts.

XXX if (cold) should go

branches: 1.3.2; 1.3.4;
Change the mailbox handling so that the data value top 28 bits are used.

Unwrap short line. Other whitespace.

branches: 1.1.2;
As we'll soon get boot-time information via the mailbox method, seperate
the actual access code into a seperate file that can be used by itself.

branches: 1.1.4; 1.1.6;
First pass at a VC mailbox driver.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Add support for BCM2835 AUX UART.

Add driver for the bcm2835 internal SD controller. On boards with SDIO
Wi-Fi, the internal SD controller is used for the SD card slot and the
Arasan SDHCI controller is used for SDIO.

Add drivers to access the clock manager and pulse width modulator.

RPI2 MP support.

Thanks to Matt Thomas for making this possible with his changes to pic.c

Spin up the non-boot CPUs, but don't allow cpu_boot_secondary_processors
to see them for now.

RPI2 nows works well with only the boot cpu.

Initial RPI2 support - it doesn't work yet. The generic timer gets messed
up somehow.

This commit changes the KVA layout of the RPI.

branches: 1.22.2;
Mailbox improvements from mlelstv@

Serialise access to the mailbox and use interrupts.

XXX if (cold) should go

bcm2835 dma controller driver

branches: 1.20.2;
add a driver for BCM2835 obio gpio

branches: 1.19.2;
Switch to dwctwo(4) from dotg(4) for the RaspberryPi port. This brings
DMA support and (initial) isoc transfer support.

Remove URTWN_DOTG_WORKAROUND as dwctwo doesn't appear to need it.

branches: 1.18.4;
add vchiq

Revert back to one dmarange

Add a _BUS_DMAMAP_NOALLOC which tells bus_dmamem_alloc to skip that
dmarange when allocating memory.
Add a second dmarange to bcm23xx obio to allow it to map coherently mapped
memory.

Get rid of _BUS_DMAMAP_MEM_XLATE

Add a flag to make bus_dmamem_map use the bus/sys transation table when
mapping bus addresses. Make bcm2835 obio use it.

Deal with bus addresses better. Switch the DMA bus address base to the
cache coherent range - not that anything uses it yet.

Add BCM2835 RNG support.

Provide dotg(4) - a driver for the Synposys DesignWare OTG USB IP found
in the RaspberryPI. The driver supports host mode and control, interrupt,
and bulk transfers only at this point.

Heavily based on the FreeBSD driver by Hans Petter Selasky.

Thanks to all who helped. Jared McNeill, Michael van Elst and other.

add fb and dotg devices

Add driver for BCM2835 SPI0 controller.

Add driver for Broadcom Serial Control (I²C) master on BCM2835.

Whitespace style adjustments.

Use config_stdsubmatch() to enable (optional) use of locators on obio devices.

branches: 1.5.2; 1.5.4;
... and remove inclusion of defparam-created header.

First pass at a VC mailbox driver.

Fix thinko in previous.

Replace use of MEMSIZE with functionally equivilant,
yet perhaps no-more-proper, physmem*PAGE_SIZE.

branches: 1.1.2;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Use the VC property mailbox to request the UART clock rate and use it
appropriately

Newer firmwares use 48MHz

branches: 1.3.2;
When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.18; 1.1.20;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

G/C

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Trailing whitespace

bcm2835 watchdog timer support

branches: 1.1.2; 1.1.4; 1.1.6;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

G/C

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.1.2; 1.1.6;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

Add support for poweroff.

There is no circuitry to actually remove power from RPI, but you can reboot
into a low power state. Depending on model/firmware release you need a power
cycle or a GPIO signal to leave the low power state again. Add-on hardware
is usually unaffected.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.16;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.3.16;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.2.16;
Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

branches: 1.1.2;
Add drivers to access the clock manager and pulse width modulator.

branches: 1.2.2;
Fix RCSIds

branches: 1.1.2;
Add drivers to access the clock manager and pulse width modulator.

rnd(9): Omit needless locks in various HWRNG drivers.

Now that the rnd(9) API guarantees serial callbacks, we can simplify
everything a bit more.

(Some drivers like hifn(4) and sun8icrypto(4) still use locks to
coordinate with other parts of the driver to submit requests to and
process responses from the device.)

rnd(9): Adjust IPL of locks used by rndsource callbacks.

These no longer ever run from hard interrupt context or with a spin
lock held, so there is no longer any need to have them at IPL_VM to
block hard interrupts. Instead, lower them to IPL_SOFTSERIAL.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.14.2;
rnd_attach_source calls the callback itself now.

No need for every driver to explicitly call it to prime the pool.

Eliminate now-unused <sys/rndpool.h>.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Simplify bcm2835, tegra, and am335x hardware RNG drivers.

Tested by nick@.

branches: 1.11.2;
MD rnd.h cleanups. Please let me know if I broke anything!

branches: 1.10.4;
Merge tls-earlyentropy branch into HEAD.

branches: 1.9.2; 1.9.4;
Make the rpi hwrng feed data to the entropy pool in a softint.

The two-lock scheme here is excessive but will do provisionally until
rnd(9) gets disentangled.

Tested by Aymeric Vincent.

Get some entropy early on bcm2835_rng attach.

Fix return with mutex held bug in get routine -- thanks Jared.

Whitespace.

Remove printf

branches: 1.4.2;
Convert the entropy pool framework from pseudo-callout-driven to
soft interrupt driven operation.

Add a polling mode of operation -- now we can ask hardware random number
generators to top us up just when we need it (bcm2835_rng and amdpm
converted as examples).

Fix a stall noticed with repeated reads from /dev/random while testing.

branches: 1.3.2; 1.3.6;
Use bus_space_read_multi_4 and fix copyright year. From Jared.

discard initial numbers from rng, broadcom says they are "less random"

Add BCM2835 RNG support.

Merge thorpej-cfargs2.

branches: 1.9.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.8.2;
fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Data written to bcmdmac(4) should be in little-endian.

branches: 1.5.2;
Remove superfluous checking for a "disable" property in the device_t
properties dictionary.

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

branches: 1.3.2; 1.3.4;
Disable sdhost instead of sdhc for non-wifibt boards.

Cleanup debug messages

Add driver for the bcm2835 internal SD controller. On boards with SDIO
Wi-Fi, the internal SD controller is used for the SD card slot and the
Arasan SDHCI controller is used for SDIO.

Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

branches: 1.15.2;
Pass PMAP_WRITE_COMBINE as appropriate in bcm283x_bs_map.

RPI2 FB console now updates properly again

FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Sync with armv7_generic_space.c

- BE support (probably not needed)
- a4x subreagion/mmap support
- fix some a4x stream methods
- add UVM_KMF_COLORMATCH in bs_map when allocating KVA
- support BUS_SPACE_MAP_PREFETCHABLE

KNF

Trailing whitespace

branches: 1.10.10;
Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

Fix up bus_space_map for latest RPI firmware which now passes the FB
address in the mailbox properties as a bus address.

Initial RPI2 support - it doesn't work yet. The generic timer gets messed
up somehow.

This commit changes the KVA layout of the RPI.

Improve inline asm around dsb/dmb/isb:
- always use volatile and mark them as memory barrier
- use the common version from locore.h in all places not included from
userland

branches: 1.6.10; 1.6.12;
Trailing whitespace

Deal with bus addresses better. Switch the DMA bus address base to the
cache coherent range - not that anything uses it yet.

support BUS_SPACE_MAP_PREFETCHABLE in bcm2835_bs_mmap()

Simplify by using PMAP_NOCACHE

basic mmap support, ok skrll

branches: 1.1.2; 1.1.4; 1.1.6;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

Encapsulate what's needed to attach a SPI bus into a spibus_attach()
inline.

bcm2835_spi: guard against too large clock divider and clamp if necessary

Remove unnecessary gotos and label. Same code before and after.

branches: 1.11.2;
Merge thorpej-cfargs2.

branches: 1.10.2; 1.10.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.9.2;
fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.7.2;
Use mutex for lwp/interrupt coordination. using splX() simply does not work
on multiprocessor systems.

fixes PR kern/55506

ensure spibus_attach_args is zero'ed

branches: 1.5.4; 1.5.8;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

branches: 1.2.2;
IPL_BIO -> IPL_VM

No functional change. No code change... It's the same thing!

branches: 1.1.2; 1.1.4; 1.1.8;
Add driver for BCM2835 SPI0 controller.

branches: 1.1.2; 1.1.4; 1.1.8;
Add driver for BCM2835 SPI0 controller.

fdtbus_intr_establish -> fdtbus_intr_establish_xname

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.10.10;
Whitespace

branches: 1.9.4;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

spaces to tabs

When expanding an inline function make sure you get the argument order
correct!

Now there's no functional change to expanding bcm2835_intr_establish

Expand the bcm2835_intr_establish inline.

No functional change.

Wrap a long line.

Clear status of BCM2835_STIMER_M3 only as timer comparison reg 0 and 2
are used by the VideoCore on Raspberry Pi. This fixes audio playback.

Addresses PR 48805.

This commit was approved by skrll@

branches: 1.3.12; 1.3.14;
Trailing whitespace

Fix delay.

branches: 1.1.2; 1.1.4; 1.1.6;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

Trailing whitespace

codec translates to 16bit slinear_le, not the internal format.

branches: 1.18.16;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.17.2;
vcaudio: Do not report recording mode in hardware format

vcaudio: don't advertise CAPTURE when all functions return EINVAL

branches: 1.15.6;
Adapt to changed 64bit vchiq interface.

branches: 1.14.2; 1.14.4;
Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.13.2;
Fix indent.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.11.14; 1.11.16;
Only run interrupt during playback.

OK skrll@

branches: 1.10.2;
Reduce latency a bit. From nat@

port-arm/49057: Raspberry Pi Audio volume control does not work

AUDS server messages expect volume to be expressed in units of 1/256 dB,
where we previously (incorrectly) treated it as as percentage. Map the
NetBSD audio level (0-255) to 20 steps (levels from FreeBSD bcm2835_audio.c)
and provide independent volume knobs for outputs.auto, outputs.hdmi, and
outputs.headphones.

port-arm/49057: Raspberry Pi Audio volume control does not work

- Use software volume control for outputs.master/inputs.dac
- Previous volume control (for analog output only) is available on new
outputs.headphones mixer control.
- Add an outputs.select enum to choose between "auto", "headphones", and
"hdmi" outputs.

branches: 1.7.2;
Some improvements that make playback mostly reliable for me - the final
piece of the jigaw is probably in vchiq:

- prefill vchiq with a number (currently 2) blocks of audio before
starting

- use a kthread as workqueue isn't suited to our usage.

- don't drain on stopping as for some reason it leaves data behind.

capture peer version; if less than 2, bail out as bulk mode is not supported. report the peer version with "audioctl version"

improved playback error handling, and get rid of junk+silence insertion at the beginning of playback

use a fixed frequency (48kHz) and configure the audio server at attach time, instead of at the beginning of playback

branches: 1.3.2; 1.3.4;
Improve locking and kcondvar usage.

The "interrupt" lock doesn't need to be a spin mutex as the vchi
completions we're synchronising with are done in thread context.

Don't share the interrupt lock for the msg_sync done synchronisation.

branches: 1.2.4; 1.2.6; 1.2.10;
Trailing whitespace

add wip videocore4 audio driver

Adapt to changed 64bit vchiq interface.

branches: 1.3.2; 1.3.30; 1.3.36;
Whitespace.

branches: 1.2.4; 1.2.6; 1.2.10;
Trailing whitespace

add wip videocore4 audio driver

Fix couple of typos in comments.

branches: 1.32.24;
Add comments for 2711 local peripherals

Move interrupt register definitions to driver.

branches: 1.30.6;
Translate bus addresses for SCB on BCM2711

branches: 1.29.2;
Fix up ARM_LOCAL for 2711 so that it works now.

Use PIC_IRQBASE_ALLOC for all pic_add calls and track/use each cpu irqbase

Use PIC_IRQBASE_ALLOC and allow conditional attachment of interrupt
handlers (for RPI4)

(missing from previous commit)

We follow linux mainline and they're using 2711 and not 2838 for RPI4

Add BCM2838_{PERIPHERALS,ARM_LOCAL}_BASE and support macros

s/2835/283X/ in BCM2835_PERIPHERALS_BASE_BUS and BCM2835_PERIPHERALS_SIZE
to show they cover all of 283[5678]

NFCI

cleanup aarch64 mpstart and fdt bootstrap
* arm_cpu_hatch_arg is a bad idea. avoid serializing CPU startup, and eliminate arm_cpu_hatch_arg.
in mpstart, resolve own cpu index using array of cpu_mpidr[] (aarch64)
* add support fdt enable-method "spin-table"
* add support fdt enable-method "brcm,bcm2836-smp" (for 32bit RaspberryPi)
* use arm_fdt_cpu_bootstrap() instead of psci_fdt_bootstrap()
* rename "arm/fdt/psci_fdt.h" to "arm/fdt/psci_fdtvar.h" because of conflict of include file for needs-flag
* add devmap for cpu spin-table of raspberrypi3/aarch64
* no need to force hatch APs for raspberrypi3/arm32 ifndef MULTIPROCESSOR.
* fix to work pmap_extract(kerneltext/data/bss) even if before calling pmap_bootstrap

idea to use cpu_mpidr[] by jmcneill@. reviewd by skrll@. thanks.

branches: 1.22.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

branches: 1.21.2;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Add support for BCM2835 AUX UART.

Add driver for the bcm2835 internal SD controller. On boards with SDIO
Wi-Fi, the internal SD controller is used for the SD card slot and the
Arasan SDHCI controller is used for SDIO.

Fix up bcm283[56] bus_space(4) to really use bus addresses for
peripherals, etc

Simplifies the code in various places and uses the abstraction in
more places. (bcm2835_gpio_subr.c still doesn't)

Provide all the BCM2836_INT_CNT*_CPUN helper macros

No functional change.

Add drivers to access the clock manager and pulse width modulator.

RPI2 MP support.

Thanks to Matt Thomas for making this possible with his changes to pic.c

Initial RPI2 support - it doesn't work yet. The generic timer gets messed
up somehow.

This commit changes the KVA layout of the RPI.

Use the www.raspberrypi.org URL for the datasheet

branches: 1.12.2;
Add BCM2835_PERIPHERALS_TO_BUS() macro to convert ARM physical address to
VideoCore bus address, needed when programing the DMA engine with hardware
FIFO register addresses.

add DMA0 int

branches: 1.10.12;
add vchiq base and size

Deal with bus addresses better. Switch the DMA bus address base to the
cache coherent range - not that anything uses it yet.

Add BCM2835 RNG support.

Fix BCM2835_USB_SIZE.

The BSC (I²C) interrupt is actually shared between (at least) the BSC0 and
BSC1 units, so don't name it as belonging to only BSC0.

Trailing whitespace.

Define BCM2835_USB_SIZE

branches: 1.3.2; 1.3.4;
Add some more peripheral base addresses, mapping sizes, and interrupt bits.

First pass at a VC mailbox driver.

branches: 1.1.2;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

Add emmc2 clock goop from mlelstv@

branches: 1.4.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

branches: 1.3.2;
FDTise RapberryPI support. Thanks for jmcneill for a lot of help with this.

The kernel image that the RPI firmware boots is now netbsd.img in the
kernel build directory.

XXX fdtbus_get_reg needs reworking

Initial RPI2 support - it doesn't work yet. The generic timer gets messed
up somehow.

This commit changes the KVA layout of the RPI.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.18; 1.1.20;
Initial commit of support for the RaspberryPI (www.raspberrypi.org)

This is enough for serial console via the gpio header pins and to get to
multiuser.

A huge thank you to Matt Thomas for all his help.

bcm283x: add SDHC_FLAG_NO_PWR0 quirk

Add SDHC_FLAG_NO_PWR0 quirk to restore previous behaviour with
SDHC_FLAG_32BIT_ACCESS flag.

sdhc: Retire SDHC_FLAG_USE_ADMA2 flag.

ADMA2 support in sdhc is mature now, so no need for it to be opt-in.

disable DMA for now...

bcm2838: Add ACPI support for the EMMC2 SDHCI controller.

whitespace

Whitespace. (mainly spaces to tabs)

KNF

branches: 1.7.2;
Trailing whitespace

branches: 1.6.2;
Use "non-posted" instead of "strongly ordered" to describe nGnRnE mappings

Rename the following defines:
- _ARM_BUS_SPACE_MAP_STRONGLY_ORDERED to BUS_SPACE_MAP_NONPOSTED
- PMAP_DEV_SO to PMAP_DEV_NP
- LX_BLKPAG_ATTR_DEVICE_MEM_SO to LX_BLKPAG_ATTR_DEVICE_MEM_NP
Rename the following option:
- AARCH64_DEVICE_MEM_STRONGLY_ORDERED to AARCH64_DEVICE_MEM_NONPOSTED

Merge thorpej-cfargs2.

branches: 1.4.4;
Pass along our device handle to the PCI bus instance we attach.

branches: 1.3.2;
bcm2838_pcie: match brcm,bcm2711-pcie

branches: 1.2.2;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.1.2; 1.1.4;
RPI4 PCIe driver, based on pcihost_fdt.c

branches: 1.1.4;
RPI4 PCIe driver, based on pcihost_fdt.c

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.8; 1.1.10;
Attachment for RNG200

Use device_setprop_data() to set the "mac-address" property.

Re-factor the console-related code into fdt_console.[ch]

Refactor the "platform" defitions into fdt_platform.h

Rename ARM_PLATFORM to FDT_PLATFORM and make it available outside arm.

Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.47.2;
Call acpi_device_register() / fdtbus_device_register() as approrpriate.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Data written to and read from bcm283x UART registers should be in little-endian.

Data written to and read from bcmmbox(4) should be in little-endian.

Support EARLYCONS and VERBOSE_INIT_ARM for Raspberry Pi Zero W, for
which mini UART should be used instead of PL011 UART.

Factor out bcm283x_aux_platform_early_putchar() from
bcm{2837,2711}_platform_early_putchar(), for which output goes to
AUX UART (aka mini UART).

No functional changes.

branches: 1.41.2;
Get rid of a4x bus_space tag from fdtbus_attach_args. The only consumer
of this was various com(4) glue so modify all of that to use the new
com_init_regs_stride instead.

Add support for KASAN on ARMv[67]

Thanks to maxv for many pointers and reviews.

Avoid large stack usage with kmem_alloc - we're in device_register so
there is no problem doing this.

Update to new proplib api

Add support for Broadcom GENET v5 ethernet controller as found on the
Raspberry Pi 4 (BCM2711).

Translate bus addresses for SCB on BCM2711

Remove custom bus dma tag handling.

branches: 1.34.2;
Provide a single generic bcm283x_platform_uart_freq which checks for
"brcm,bcm2835-aux-uart" and returns the appropriate core clock based
results; otherwise it returns the uart clock from firmware.

Should fix early console output on the rpi0w.

Based on a diff from mlelstv

The DMA range doesn't cover all of memory on the bcm2711 (rpi4) - it
covers (most of) the first 1GB.

Add another cache invalidation before reading memory for firmware query
results.

Fix up ARM_LOCAL for 2711 so that it works now.

Invalidate the cache just before trying to read the results from the
firmware as RPI4 A72s can fill the cache with speculation

Add emmc2 clock goop from mlelstv@

We follow linux mainline and they're using 2711 and not 2838 for RPI4

Add brcm,bcm2711 as an alias for brcm,bcm2838

Fix build on SOC_BCM2835 kernels

BCM2838 (RPI4) support.

Based on a diff from mlelstv

s/2835/283X/ in BCM2835_PERIPHERALS_BASE_BUS and BCM2835_PERIPHERALS_SIZE
to show they cover all of 283[5678]

NFCI

branches: 1.23.4;
Add a link set for cpu enable methods.

Retire fdt_putchar and ap_early_put_char in favour of uartputc.

- fix AP spinup on bcm283x
- "brcm,bcm2836-smp" is a enable-method for only 32bit bcm2836.

Provide generic start code that assumes the MMU is off and caches are
disabled as per the linux booting protocol for ARMv6 and ARMv7 boards.
u-boot image type should be changed to 'linux' for correct behaviour.

The new start code builds a minimal "bootstrap" L1PT with cached access
disabled and uses the same table for all processors. AP startup is
performed in less steps and more code is written in C.

The bootstrap tables and stack are placed into an (orphaned) section
"_init_memory" which is given to uvm when it is no longer used.

Various kernels have been converted to use this code and tested. Some
boards were provided by TNF. Thanks!

The GENERIC kernel now boots on boards using the TEGRA, SUNXI and EXYNOS
kernels. The GENERIC kernel will also work on RPI2 using u-boot.

Thanks to martin@ and aymeric@ for testing on parallella and nanosoc
respectively

Use __BIT. NFC.

cleanup aarch64 mpstart and fdt bootstrap
* arm_cpu_hatch_arg is a bad idea. avoid serializing CPU startup, and eliminate arm_cpu_hatch_arg.
in mpstart, resolve own cpu index using array of cpu_mpidr[] (aarch64)
* add support fdt enable-method "spin-table"
* add support fdt enable-method "brcm,bcm2836-smp" (for 32bit RaspberryPi)
* use arm_fdt_cpu_bootstrap() instead of psci_fdt_bootstrap()
* rename "arm/fdt/psci_fdt.h" to "arm/fdt/psci_fdtvar.h" because of conflict of include file for needs-flag
* add devmap for cpu spin-table of raspberrypi3/aarch64
* no need to force hatch APs for raspberrypi3/arm32 ifndef MULTIPROCESSOR.
* fix to work pmap_extract(kerneltext/data/bss) even if before calling pmap_bootstrap

idea to use cpu_mpidr[] by jmcneill@. reviewd by skrll@. thanks.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

Fix arm non-MULTIPROCESSOR build for RPI2

add support multiple cpu clusters.
* pass cpu index as an argument to secondary processors when hatching.
* keep cpu cache confituration per cpu clusters.

Hello big.LITTLE!

Set mac-address property to mue(4).

Correctly report memory size, not clock rate when VERBOSE_INIT_ARM.

* Convert bus address to physical address in xxx_bs_mmap(), as done in
xxx_bs_map().

* Reuse bs_map and bs_mmap in arm_generic_bs_tag in order to
- set pmap flags properly for aarch64
- dedup codes

OK ryo

Add prefixes to struct arm_platform{,_info} members.

No functional change.

Provide and use kern_vtopdiff in KERN_{VTOPHYS,PHYSTOV}. A step towards
generic arm.