r260326, r260327, r260331, r260333, r260340, r260371, r260372, r260373,
r260374, r260375
Add common bus_space tag definition shared for most supported ARMv6/v7 SoCs.
Correct license statements to reflect the fact that these files were all
derived from sys/arm/mv/bus_space.c.
In pmap_unmapdev(), remember the size, and use that as an argument to
kva_free(), or we'd end up always passing it a size of 0
In pmap_mapdev(), first check whether a static mapping exists,
Convert TI static device mapping to use the new arm_devmap_add_entry(),
Use the common armv6 fdt_bus_tag defintion for tegra instead of a local copy.
Eliminate use of fdt_immr_addr(), it's not needed for tegra
Convert lpc from using fdt_immr style to arm_devmap_add_entry() to make
static device mappings.
Retire machine/fdt.h as a header used by MI code, as its function is now
obsolete. This involves the following pieces:
- Remove it entirely on PowerPC, where it is not used by MD code either
- Remove all references to machine/fdt.h in non-architecture-specific code
(aside from uart_cpu_fdt.c, shared by ARM and MIPS, and so is somewhat
non-arch-specific).
- Fix code relying on header pollution from machine/fdt.h includes
- Legacy fdtbus.c (still used on x86 FDT systems) now passes resource
requests to its parent (nexus). This allows x86 FDT devices to allocate
both memory and IO requests and removes the last notionally MI use of
fdtbus_bs_tag.
- On those architectures that retain a machine/fdt.h, unused bits like
FDT_MAP_IRQ and FDT_INTR_MAX have been removed.
Add #include <machine/fdt.h> to a few files that used to get it via pollution
Enable the mv cesa security/crypto device by providing the required property
in the dts source, and adding the right devices to the kernel config.
Remove dev/fdt/fdt_pci.c, which was code specific to Marvell ARM SoCs,
related to setting up static device mappings. Since it was only used by
arm/mv/mv_pci.c, it's now just static functions within that file, plus
one public function that gets called only from arm/mv/mv_machdep.c.
Switch RPi to using arm_devmap_add_entry() to set up static device mapping.
Allow 'no static device mappings' to potentially work.
Don't try to find a static mapping before calling pmap_mapdev(), that logic
is now part of pmap_mapdev() and doesn't need to be duplicated here.
Switch a10 to using arm_devmap_add_entry() to set up static device mapping.
Implement OFW_BUS_MAP_INTR() in terms of the FDT PIC table
Reimplement fdt_intr_to_rl() in terms of OFW_BUS_MAP_INTR() and
OFW_BUS_CONFIG_INTR().
Use bus_space_map() rather than pmap_mapdev() in nexus_activate_resource(),
when running on FDT systems. Unmap memory in nexus_deactivate_resource().
Remove fdt_pic_table code from MIPS, PowerPC, and x86, as it is no longer
used by anything.
Add polarity and level support to ARM GIC
Do not attach to PCI bridges in AHCI driver
Use only mapped BIOs on ARM
Fix race condition in DELAY for SP804 timer.
Allow AT91_MCI_ALLOW_OVERCLOCK to be an option in kernel config files.
Set the SoC name for the atmelbus name.
Add support for Samsung K9F2G08U0A (256MiB SLC) NAND
Comment updates.
Delete echoed doesn't rub out the previous character, so always
use <backspace> <space> <backspace> instead. This fixes hitting
DELETE instead of BACKSPACE at mountroot> prompt.
Apply access flags for managed and unmanaged pages properly on ARMv6/v7
Set the PGA_WRITEABLE flag when the protections indicate write access, not
just when the current access is a write.
Enable missing Access Flag for secondary cores on ARMv6/v7
Add identification and necessary type checks for Krait CPU cores.
Switch to use WBWA mappings for page tables on armv6, this is needed for SMP.
Fix PTE_SYNC() for PIPT L2 caches, using the virtual address wasn't so useful.
Use PTE_SYNC() for >= armv6
Spell cpu_l2cache_wb_range correctly.
Fix condition that determines PMAP_NEEDS_PTE_SYNC value for ARM
Use values of the correct defines to determine statement's result.
ARM_ARCH_ symbols are always defined, hence only values are relevant.
Avoid clearing EXEC permission bit when setting the page RW on ARMv6/v7
When emulating modified bit the executable attribute was cleared by
mistake when calling pmap_set_prot().
r257282, r257332
Wait for DesignWare UART transfers completion before accessing line control
Enable UART busy detection handling for Armada XP - based board
Enable SATA interface on Armada XP
Run mvs SATA driver on Armada XP instead of old mv_sata
Retire arm_remap_nocache() and the data and constants associated with it.
Remove hard-coded mappings related to Armada XP support
Fix-up DTB for Armada XP registers' base according to the actual settings
Change Armada XP kernel load address to the u-boot's end address
Remove not working and deprecated PJ4Bv6 support
Switch off explicit broadcasting of the TLB flush operations for PJ4B CPU
Add missing ARMv6 CPU functions to ARM Makefile
r259199, r259484, r259513, r259514, r259516
The kernel stack guard pages are only below the stack pointer, not above.
Remove unnecessary double-setting of the thread's onfault state in
copyinstr().
Open Firmware mandates that certain cross-references, in particular those
in /chosen, be ihandles. The ePAPR spec makes those cross-reference phandles,
since FDT has no concept of ihandles. Have the OF FDT CI module interpret
queries about ihandles as cross-reference phandles.
Real OF systems have an ihandle under /chosen/stdout, not a phandle. Use
the right type.
Rearchitect platform memory map parsing to make it less
Open Firmware-centric.
Remove fdtbus_bs_tag definition, which is now obsolete. The remainder of
this file is also slated for future demolition.
Return the correct IEEE 1275 code for "nextprop".
Use the common Open Firmware PCI interrupt routing code instead of the
duplicate version in dev/fdt.
Configure interrupt sense based on device tree information.
Simplify the ofw_bus_lookup_imap() API slightly: make it allocate maskbuf
internally instead of requiring the caller to allocate it.
r258697, r258757
Do not assume a value for #address-cells when parsing the OF translations
map. This allows the kernel to get farther with OpenBIOS on 64-bit CPUs.
Actually look up #address-cells instead of assuming it is correlated with
the Uninorth version number.
#interrupt-cells belongs to the iparent, not the device parent.
Add a sysctl to allow disabling resetting the OF syscons.
For PCI<->PCI bridges, #address-cells may be 3.
Make RTAS calls, which call setfault() to recover from machine checks,
preserve any existing fault buffer.
badaddr() is used only in the grackle PCI driver, so move its definition
there. Clean up a spurious setfault() declaration as well.
This [phyp_console] driver doesn't need the /options node, so don't check
for it.
Use the Open Firmware-based CPU frequency determination as a generic
fallback if we can't measure CPU frequency. This is also useful on a
variety of embedded systems using FDT.
- Allow foot shooting with the resetconfig command via the -f option.
- Fix typos preventing -f to actually work with the create command.
- Initialize flags to zero rather than using stack garbage when handling
the grow command.
Sponsored by: Bally Wulff Games & Entertainment GmbH
Unify handling of illegal instruction faults between AIM and Book-E.
Make uart_cpu_powerpc work on both FDT and OFW systems.
Fix debug printfs in FPU_EMU to compile on powerpc64 and enable it for
powerpc64.
Remove a pointless #ifdef AIM. This is just PPC64 specific, including
64-bit Book-E.
Make single precision floating point arithmetic actually work
Split the function of the PCB_FPU flags into two: PCB_FPU now indicates that
the actual FPU is enabled, while PCB_FPREGS indicates that the FPU state
structure in the PCB is valid.
Rename the "bare" platform "mpc85xx"
Also turn "bare" into a truly bare platform
Move CCSR discovery into the platform module
There is no reason Book-E needs to save XER and CTR on context switches.
r258024, r258027, r258051, r258052, r258243,
Follow up r223485, which made AIM use the ABI thread pointer instead of
PCPU fields for curthread, by doing the same to Book-E.
Use the same implementation of copyinout.c for both AIM and Book-E.
Actually add IOMMU domain to the list of known mappings.
Following the approach with ACPI DMAR on x86, split IOMMU handling into
a variant PCI bus instead of trying to shoehorn it into the PCI host bridge
adapter.
Make sure that TLB1 mappings are aligned correctly.
r257794, r257795, r257992
Teach nexus(4) about Open Firmware (e.g. FDT) on ARM and MIPS, retiring
fdtbus in most cases.
Make OF_nextprop() work correctly for FDT by using the libfdt
fdt_next_property_offset() API.
Do not panic if pmap_mincore() is called.
An addendum: it is possible, though of questionable utility, for a node
to have no properties at all.
Add definition for the Atheros 8021 gigabit PHY.
Consolidate Apple firmware hacks and improve them by switching on the
presence of mac-io devices in the tree, which uniquely identifies Apple
hardware.
Allow OF_decode_addr() to also be able to map resources on big-endian
devices.
Make tsec work with the device tree present on the RB800.
Be more flexible about which compatible strings to accept. This brings up
the PCI Express bus on the RB800 using the firmware device tree.
Rename the "bare" platform "mpc85xx", which is what it actually is, and
add actual platform probing based on PVR.
Add some extra sanity checking and checks to printf format specifiers.
Try even harder to find a console before giving up.
Make devices with registers into the KVA region work reliably.
Turn on VM_KMEM_SIZE_SCALE on 32-bit as well as 64-bit PowerPC.
Return NOKEY instead of 0 if there are no more key presses queued.
Add pmap_mapdev_attr() and pmap_kenter_attr() interfaces.
Fix concurrency issues with TLB1 updates and make pmap_kextract() search
TLB1 mappings as well
Interrelated improvements to early boot mappings:
- Remove explicit requirement that the SOC registers be found except as an
optimization (although the MPC85XX LAW drivers still require they be found
externally, which should change).
- Remove magic CCSRBAR_VA value.
- Allow bus_machdep.c's early-boot code to handle non 1:1 mappings and
systems not in real-mode or global 1:1 maps in early boot.
- Allow pmap_mapdev() on Book-E to reissue previous addresses if the
area is already mapped. Additionally have it check all mappings, not
just the CCSR area.
Add some extra sanity checking and checks to printf format specifiers.
Bump initial TLB size. The kernel is not necessarily less than 16 MB
Handle (in a slightly ugly way) ePAPR-type loaders that just place a
device tree into r3.
The old trap.h (then trap_aim.h) actually had trap ID codes for Book-E CPUs.
Use it universally. Book-E traps may also need revisiting due to the
introduction of fixed-offset traps and the deprecation of IVORs in POWER
ISA 2.06, but that's very much an issue for another day.
Test UARTs physical address instead of virtual.
Be a bit more flexible in how we find the console from the properties on
/chosen, following the list of allowed console properties in ePAPR. Also
do not require that stdin be defined and equal to stdout: stdin is
nonstandard (for ePAPR) and console in an unexpected place is after all
better than no console.
Use common OFW root code to set up fdtbus. This is an almost purely
negative diff that should improve reliability somewhat. There should be
no differences in behavior -- please report any that crop up. This has been
tested on ARM and PPC systems.
Make sure to get the right node when looking up #interrupt-cells.
Be a little more suspicious of thermal sensors, which can have single
crazy readings occasionally. One wild reading should not be enough to
trigger a shutdown, so instead wait for several concerning readings in
a row.
Add two new interfaces to ofw_bus:
- ofw_bus_map_intr()
Maps an (iparent, IRQ) tuple to a system-global interrupt number in some
platform dependent way. This is meant to be implemented as a replacement
for [FDT_]MAP_IRQ() that is an MI interface that knows about the bus
hierarchy.
- ofw_bus_config_intr()
Configures an interrupt (previously mapped) based on firmware sense flags.
This replaces manual interpretation of the sense field in bus drivers and
will, in a follow-up, allow that interpretation to be redirected to the PIC
drivers where it belongs. This will eventually replace the tables in
/sys/dev/fdt/fdt_ARCH.c
The PowerPC/AIM code has been converted to use these globally, with an
implementation in terms of MAP_IRQ() and powerpc_config_intr(), assuming
OpenPIC, at the bus root in nexus(4). The ofw_bus_config_intr() will shortly
be integrated into pic_if.m and bounced through nexus into the PIC tree.
Factor out MI portions of the PowerPC nexus device into /sys/dev/ofw. The
sparc64 driver will be modified to use this shortly.
Allow PIC drivers to translate firmware sense codes for themselves. This
is designed to replace the tables in dev/fdt/fdt_ARCH.c, but will not
happen quite yet.
Do not map IRQs twice. This fixes PowerPC/FDT systems with multiple PICs,
which would try to treat the previously-mapped interrupts from
fdt_decode_intr() as interrupt line numbers on the same parent PIC.
Remove some of the code required for supporting ssm(4) on SPARC in favor
of a more PowerPC/FDT-focused design. Whenever SPARC64 is integrated
into this rework, this should be (trivially) revisited.
If the device tree directly contains the timebase frequency, use it. This
property is required by ePAPR, but maintain the fallback to bus-frequency
for compatibility. Allow 32 or 64 bits.
Add a new function (OF_getencprop()) that undoes the transformation applied
by encode-int. Specifically, it takes a set of 32-bit cell values and
changes them to host byte order. Most non-string instances of OF_getprop()
should be using this function, which is a no-op on big-endian platforms.
Use the new function all over the place.
Catch up on 6 years of improvements in Open Firmware nexus devices by
importing the sparc64 one. At least 90% of this code is MI and will be
moved into /sys/dev/ofw at some point in the future.
Ignore registers on devices where the reg property is malformed. Issue a
warning if this happens under bootverbose. This prevents some
strange-looking entries in dmesg for SMU devices on Apple G5 systems.
Standards-conformance and code deduplication:
- Use bus reference phandles in place of FDT offsets as IRQ domain keys
- Unify the identical macio/fdt/mambo OpenPIC drivers into one
- Be more forgiving (following ePAPR) about what we need from the device
tree to identify an OpenPIC
- Correctly map all IRQs into an interrupt domain
- Set IRQ_*_CONFORM for interrupts on an unknown PIC type instead of
failing attachment for that device.
Allow lots of interrupts (useful on multi-domain platforms) and do not
set device_quiet() on all devices attached under nexus(4).
- Handle 2GB of ram
- Allow the OFW interrupt mapping code to work with PCI devices not
enumerated by Open Firmware, as in the case of FDT.
- Provide an interface for PCI bus drivers that need some of ofw_pci's
metadata during attach.
- Use standard ofw_bus helpers instead of reinventing the wheel.
- Make hard-wired TLB allocations be at minimum one page.
- Add support for UDP-Lite protocol (RFC 3828) to IPv4 and IPv6 stacks.
Tested with vlc and a test suite [1].
[1] http://www.erg.abdn.ac.uk/~gerrit/udp-lite/files/udplite_linux.tar.gz
Reviewed by: jhb, glebius, adrian
- Fix a logic bug which prevented the sending of UDP packet with 0 checksum.
- Disable TX checksum offload for UDP-Lite completely. It wasn't used for
partial checksum coverage, but even for full checksum coverage it doesn't
work.
Prior to r254304, a separate function, vm_pageout_page_stats(), was used
to periodically update the reference status of the active pages. This
function was called, instead of vm_pageout_scan(), when memory was not
scarce. The objective was to provide up to date reference status for
active pages in case memory did become scarce and active pages needed to
be deactivated.
The active page queue scan performed by vm_pageout_page_stats() was
virtually identical to that performed by vm_pageout_scan(), and so r254304
eliminated vm_pageout_page_stats(). Instead, vm_pageout_scan() is
called with the parameter "pass" set to zero. The intention was that when
pass is zero, vm_pageout_scan() would only scan the active queue.
However, the variable page_shortage can still be greater than zero when
memory is not scarce and vm_pageout_scan() is called with pass equal to
zero. Consequently, the inactive queue may be scanned and dirty pages
laundered even though that was not intended by r254304. This revision
fixes that.
Correctly update the count of stuck pages, "addl_page_shortage", in
vm_pageout_scan(). There were missing increments in two less common
cases.
Don't conflate the count of stuck pages and the pageout deficit provided
by vm_page_alloc{,_contig}().
Handle held pages consistently in the inactive queue scan. In the more
common case, we did not move the page to the tail of the queue. Whereas,
in the less common case, we did. There's no particular reason to move
the page in the less common case, so remove it.
Perform the calculation of the page shortage for the active queue scan a
little earlier, before the active queue lock is acquired. The correctness
of this calculation doesn't depend on the active queue lock being held.
Eliminate a redundant variable, "pcount". Use the more descriptive
variable, "maxscan", in its place.
Apply a few nearby style fixes, e.g., eliminate stray whitespace and
excess parentheses.
