Commit Graph

554 Commits

Author SHA1 Message Date
Alexander Boettcher
cb675a12d8 base: factor out irq parsing into helper header
to be used by sel4 in the next commit

Issue #2044
2016-08-10 11:07:50 +02:00
Alexander Boettcher
464181b01d base: refactor io_port session implementation
Split port API implementation into separate io_port_session_support.cc file,
so that base-sel4 may implement this part alternatively.

Issue #2044
2016-08-10 11:07:50 +02:00
Adrian-Ken Rueegsegger
dd22c961c9 Update Muen port
- Adjust list of Muen components
- vbox: Sync hw_x86_64_muen subject state with Muen SK
2016-08-10 11:07:48 +02:00
Christian Prochaska
84ee970e9b run: look for platform boot string at beginning of line
When running the same kernel in a VM as on the host system and the
kernel boot message from the VM appears on the log output, the run tool
assumes that the host machine has rebooted unexpectedly. With this
commit, an unexpected reboot is assumed only if the kernel boot message
appears at the beginning of a line. On base-hw, we enforce a line feed
at the beginning of the boot message as the SPIKE emulator log starts
with the first message of the kernel lacking a line feed.

Fixes #2041
2016-08-10 11:07:48 +02:00
Norman Feske
88b358c5ef Unification of native_capability.h
This patch establishes the sole use of generic headers across all
kernels. The common 'native_capability.h' is based on the version of
base-sel4. All traditional L4 kernels and Linux use the same
implementation of the capability-lifetime management. On base-hw, NOVA,
Fiasco.OC, and seL4, custom implementations (based on their original
mechanisms) are used, with the potential to unify them further in the
future.

This change achieves binary compatibility of dynamically linked programs
across all kernels.

Furthermore, the patch introduces a Native_capability::print method,
which allows the easy output of the kernel-specific capability
representation using the base/log.h API.

Issue #1993
2016-07-11 13:07:37 +02:00
Norman Feske
d71f0a9606 Cleanup of parent-cap handling
This patch alleviates the need for a Native_capability::Dst at the API
level. The former use case of this type as argument to
Deprecated_env::reinit uses the opaque Native_capability::Raw type
instead. The 'Raw' type contains the portion of the capability that is
transferred as-is when delegating the capability (i.e., when installing
the parent capability into a new component, or when installing a new
parent capability into a new forked Noux process). This information can
be retrieved via the new Native_capability::raw method.

Furthermore, this patch moves the functions for retriving the parent
capability to base/internal/parent_cap.h, which is meant to be
implemented in platform-specific ways. It replaces the former set of
startup/internal/_main_parent_cap.h headers.

Issue #1993
2016-07-11 13:05:27 +02:00
Norman Feske
f7bdd383e2 Remove base/native_types.h headers
Issue #1993
2016-07-11 12:06:50 +02:00
Reto Buerki
f241b6e496 Update Muen port to revision c73734d
Issue #2016
2016-07-06 13:02:58 +02:00
Reto Buerki
68bab6a411 hw_x86_64_muen: Use timed events for guest preemption
Write tick count of next kernel timer to the guest timed events page if
present. This causes the guest VM to be preempted at the requested tick
count and ensures that the guest VM can not monopolize the CPU if no
traps occur.

The base-hw kernel expects a configured switch-event from the guest VM
to base-hw with ID 30 and target vector 32 to be present in the system
policy.

Issue #2016
2016-07-06 13:02:57 +02:00
Reto Buerki
7d00763861 hw_x86_64_muen: Use timed events to implement timer
Switch kernel timer driver to timed event interface. The base-hw kernel
expects a configured self-event with ID 31 and target vector 32 to be
present in the system policy.

ssue #2016
2016-07-06 13:02:57 +02:00
Adrian-Ken Rueegsegger
cd6b3b1222 hw_x86_64_muen: Implement Muen Vm_session
* The Vm thread is always paused and on exception to make sure that guest VM
  execution is suspended whenever we handle an interrupt. Also signal the Vm
  session to poke waiting threads (e.g. Virtualbox EMT).

* Implement Vm::proceed
  Switch to the mode transition assembly code declared at the _vt_vm_entry
  label.

Issue #2016
2016-07-06 13:02:55 +02:00
Reto Buerki
082b141e66 hw_x86_64: Add _vt_vm_entry to x86_64 mode transition
The entry enables interrupts and initiates a handover to the guest VM by
invoking event number one. The sti instruction is placed at the start to
allow exits to Muen before handing off to the VM if window exiting is
requested.

Issue #2016
2016-07-06 13:02:55 +02:00
Stefan Kalkowski
e5e1f1261f hw_x86_64_muen: implement VM service skeleton
Issue #2016
2016-07-06 13:02:55 +02:00
Sebastian Sumpf
d1eee98012 base-hw: fix data alignment error on RISC-V
Native UTCB data has to be at an machine word boundary.

fixes #2027
2016-06-28 11:17:27 +02:00
Norman Feske
2030ae678e Supplement base/log.h with raw output function
This patch introduces the Genode::raw function that prints output
directly via a low-level kernel mechanism, if available.

On base-linux, it replaces the former 'raw_write_str' function.
On base-hw, it replaces the former kernel/log.h interface.

Fixes #2012
2016-06-22 12:21:42 +02:00
Adrian-Ken Rueegsegger
c1bb82fb6b base-hw: make Muen sinfo API publicly available
The sinfo function declared in sinfo_instance.h creates a static sinfo
object instance and returns a pointer to the caller.

- kernel timer and platform support to use sinfo() function to
  instantiate sinfo object
- address and size of the base-hw RAM region via the sinfo API
- log_status() function in sinfo API
2016-06-22 12:19:21 +02:00
Stefan Kalkowski
964e9e91c7 base-hw: eliminate the need to $(BASE_HW_DIR)
Instead of introducing a $(BASE_HW_DIR) variable that has to be defined in each
core makefile for the different base-hw targets, this commit replaces the
$(REP_DIR) variable usage in core.inc files with $(BASE_DIR)/../base-hw.

Ref #1955
2016-05-31 15:09:53 +02:00
Norman Feske
97a41394b4 Documentation changes on account of the book
This patch removes the outdates doc/architecture.txt since the
topics are covered by the book. We keep repos/os/doc/init.txt
because it contains a few details not present in the book (yet).
The patch streamlines the terminology a bit. Furthermore, it
slightly adjusts a few source-code comments to improve the book's
functional specification chapter.
2016-05-26 15:54:16 +02:00
Martin Stein
1208d14681 hw: use kernel timer for timer driver
* Adds public timeout syscalls to kernel API
  * Kernel::timeout installs a timeout and binds a signal context to it that
    shall trigger once the timeout expired
  * With Kernel::timeout_max_us, one can get the maximum installable timeout
  * Kernel::timeout_age_us returns the time that has passed since the
    calling threads last timeout installation

* Removes all device specific back-ends for the base-hw timer driver and
  implements a generic back-end taht uses the kernel timeout API

* Adds assertions about the kernel timer frequency that originate from the
  requirements of the the kernel timeout API and adjusts all timers
  accordingly by using the their internal dividers

* Introduces the Kernel::Clock class. As member of each Kernel::Cpu object
  it combines the management of the timer of the CPU with a timeout scheduler.
  Not only the timeout API uses the timeout scheduler but also the CPUs job
  scheduler for installing scheduling timeouts.

* Introduces the Kernel::time_t type for timer tic values and values inherited
  from timer tics (like microseconds).

Fixes #1972
2016-05-26 15:54:15 +02:00
Martin Stein
722fd85bc1 hw: higher names for core restricted syscalls
To avoid the need for adapting the names of the core restricted syscalls
each time we add a public syscall (restricted names must always be
greater than public names), let restricted syscall names simply start at
100 (we should never have more than 100 public syscalls).

Ref #1972
2016-05-26 15:54:15 +02:00
Martin Stein
608df38402 hw: add dummy config to kernel tests
Building a kernel test produced an error about a missing config
apparently because of recent changes in the run tool. So, we add
a dummy XML node as config.

Ref #1972
2016-05-26 15:54:15 +02:00
Christian Helmuth
111d74744d hw_x86_64: remove aligment attribute from FPU context
We do not ensure that the Fpu::Context is 16-byte aligned and,
therefore, should not tell the compiler that we did. Otherwise, the GCC
may optimize operations regarding the addresses of members as it did for

  if ((addr_t)_fxsave_area & 0xf) ...

With the declared 16-byte alignment the condition will never become
true.
2016-05-23 15:52:50 +02:00
Norman Feske
807be83b1b Remove inconsistent use of 'is_' prefix
Fixes #1963
2016-05-23 15:52:39 +02:00
Norman Feske
a99989af40 Separation of thread operations from CPU session
This patch moves the thread operations from the 'Cpu_session'
to the 'Cpu_thread' interface.

A noteworthy semantic change is the meaning of the former
'exception_handler' function, which used to define both, the default
exception handler or a thread-specific signal handler. Now, the
'Cpu_session::exception_sigh' function defines the CPU-session-wide
default handler whereas the 'Cpu_thread::exception_sigh' function
defines the thread-specific one.

To retain the ability to create 'Child' objects without invoking a
capability, the child's initial thread must be created outside the
'Child::Process'. It is now represented by the 'Child::Initial_thread',
which is passed as argument to the 'Child' constructor.

Fixes #1939
2016-05-23 15:52:39 +02:00
Adrian-Ken Rueegsegger
69e9929f71 hw_x86_64: Change IRTE_COUNT to designate number of IRTEs
Adjust IRTE_COUNT to specify the number of IRTEs and not the index of
the last IRTE entry. This fixes an off-by-one error in the toggle_mask()
function, where the range check for I/O APIC IRQs wrongly ignored IRQ
23.
2016-05-23 15:52:38 +02:00
Adrian-Ken Rueegsegger
61572263d7 hw_x86_64: Drop unneded Pic dummy functions 2016-05-23 15:52:38 +02:00
Norman Feske
0fae8fe9c3 hw: remove custom Cpu_connection
The custom version merely differs from the generic one with respect to
the session quota. Since we support the dynamic upgrading of sessions,
we don't need to provide the big amount (128KiB) defined by the custom
version.
2016-05-23 15:52:37 +02:00
Norman Feske
a7b3072cc2 Pass Env & as first argument to connection objects
This patch supplements each existing connection type with an new
constructor that is meant to replace the original one. The new
one takes a reference to the component's environment as argument and
thereby does not rely on the presence of the globally accessible
'env()' interface.

The original constructors are marked as deprecated. Once we have
completely abolished the use of the global 'env()', we will remove them.

Fixes #1960
2016-05-23 15:52:37 +02:00
Johannes Schlatow
f81867f208 base-hw: refactor core.mk and core.inc files
All core.inc files now use $BASE_HW_DIR instead of $REP_DIR. The former
is defined by the core.mk file. This allows including core.inc files
from other repositories (e.g. genode-world) for additional platform
support.

Fixes #1955
2016-05-23 15:52:35 +02:00
Johannes Schlatow
3df03fbc41 base-hw: fix SCU initialization for zynq-based boards
The old implementation cleared all other bits in the SCU control
register when enabling the SCU, which broke the kernel startup on zynq-
based boards.
By only raising the enable bit, we can keep the initial/default state
e.g. as set up by uboot.

Fixes #1953
2016-05-23 15:49:56 +02:00
Norman Feske
fd401bdf53 Thread API cleanup
This patch cleans up the thread API and comes with the following
noteworthy changes:

- Introduced Cpu_session::Weight type that replaces a formerly used
  plain integer value to prevent the accidental mix-up of
  arguments.
- The enum definition of Cpu_session::DEFAULT_WEIGHT moved to
  Cpu_session::Weight::DEFAULT_WEIGHT
- New Thread constructor that takes a 'Env &' as first argument.
  The original constructors are now marked as deprecated. For the
  common use case where the default 'Weight' and 'Affinity' are
  used, a shortcut is provided. In the long term, those two
  constructors should be the only ones to remain.
- The former 'Thread<>' class template has been renamed to
  'Thread_deprecated'.
- The former 'Thread_base' class is now called 'Thread'.
- The new 'name()' accessor returns the thread's name as 'Name'
  object as centrally defined via 'Cpu_session::Name'. It is meant to
  replace the old-fashioned 'name' method that takes a buffer and size
  as arguments.
- Adaptation of the thread test to the new API

Issue #1954
2016-05-23 15:49:55 +02:00
Norman Feske
1f395ae780 base: new interface for textual output
Issue #1942
2016-05-09 13:25:01 +02:00
Norman Feske
3bceefc9cf Omit superfluous use of "CAP"/"SIGNAL" services
The functionality of the former "CAP" and "SIGNAL" services is now
provided by core's "PD" service.
2016-05-09 13:24:51 +02:00
Norman Feske
dc8690ae37 Modularize base-internal headers
Issue #1952
2016-05-09 13:24:39 +02:00
Norman Feske
40a5af42eb Clean up base-library structure
This patch moves the base library from src/base to src/lib/base,
flattens the library-internal directory structure, and moves the common
parts of the library-description files to base/lib/mk/base.inc and
base/lib/mk/base-common.inc.

Furthermore, the patch fixes a few cosmetic issues (whitespace and
comments only) that I encountered while browsing the result.

Fixes #1952
2016-05-09 13:24:11 +02:00
Norman Feske
7274ca997d Remove Genode::Process from API
This patch makes the former 'Process' class private to the 'Child'
class and changes the constructor of the 'Child' in a way that
principally enables the implementation of single-threaded runtime
environments that virtualize the CPU, PD, and RAM services. The
new interfaces has become free from side effects. I.e., instead
of implicitly using Genode::env()->rm_session(), it takes the reference
to the local region map as argument. Also, the handling of the dynamic
linker via global variables is gone. Now, the linker binary must be
provided as constructor argument.

Fixes #1949
2016-05-09 13:10:52 +02:00
Norman Feske
b49e588c1c Assign threads to PD at its creation time
This patch replaces the former 'Pd_session::bind_thread' function by a
PD-capability argument of the 'Cpu_session::create_thread' function, and
removes the ancient thread-start protocol via 'Rm_session::add_client' and
'Cpu_session::set_pager'. Threads are now bound to PDs at their creation
time and implicitly paged according to the address space of the PD.

Note the API change:

This patch changes the signature of the 'Child' and 'Process' constructors.
There is a new 'address_space' argument, which represents the region map
representing the child's address space. It is supplied separately to the
PD session capability (which principally can be invoked to obtain the
PD's address space) to allow the population of the address space
without relying on an 'Pd_session::address_space' RPC call.
Furthermore, a new (optional) env_pd argument allows the explicit
overriding of the PD capability handed out to the child as part of its
environment. It can be used to intercept the interaction of the child
with its PD session at core. This is used by Noux.

Issue #1938
2016-05-09 13:10:52 +02:00
Norman Feske
511acad507 Consolidate RM service into PD session
This patch integrates three region maps into each PD session to
reduce the session overhead and to simplify the PD creation procedure.
Please refer to the issue cited below for an elaborative discussion.

Note the API change:

With this patch, the semantics of core's RM service have changed. Now,
the service is merely a tool for creating and destroying managed
dataspaces, which are rarely needed. Regular components no longer need a
RM session. For this reason, the corresponding argument for the
'Process' and 'Child' constructors has been removed.

The former interface of the 'Rm_session' is not named 'Region_map'. As a
minor refinement, the 'Fault_type' enum values are now part of the
'Region_map::State' struct.

Issue #1938
2016-05-09 13:10:51 +02:00
Norman Feske
e20bbe7002 base: remove integer return codes from PD-session
The return code of assign_parent remained unused. So this patch
removes it.

The bind_thread function fails only due to platform-specific limitations
such as the exhaustion of ID name spaces, which cannot be sensibly
handled by the PD-session client. If occurred, such conditions used to
be reflected by integer return codes that were used for diagnostic
messages only. The patch removes the return codes and leaves the
diagnostic output to core.

Fixes #1842
2016-05-09 13:09:56 +02:00
Adrian-Ken Rueegsegger
cd420b05ec hw_x86_64_muen: Use Bitset template for MSI address handle
Use Bitset_2 to represent MSI address handle which renders the
Msi_handle type unnecessary.
2016-04-25 10:48:03 +02:00
Christian Helmuth
9cd26c4d61 Prevent compiler warnings 2016-04-25 10:48:02 +02:00
Martin Stein
4ef2b0ed2e hw arm: avoid shared cache lines during MP init
When bringing up the kernel on multiple cores, there is a time span
where some cores already have caches enabled and some don't. Core-local
storage that may be used during this time must be aligned at least to
the maximum line size among global caches. Otherwise, a cached core may
unintentionally prefetch data of a yet uncached core into a global
cache. This may corrupt the view of the uncached core as soon as it
enables caches. However, to determine the exact alignment for every
single ARM platform isn't sensible. Instead, we can align to the minimum
page size assuming that a cache never wants to prefetch from multiple
pages at once and thus fulfills "line size <= page size".

Fixes #1937
2016-04-25 10:48:01 +02:00
Martin Stein
e6061a794f hw: word-width sensitive kernel-stack size
Ref #1937
2016-04-25 10:48:00 +02:00
Johannes Schlatow
5b12034531 hw_zynq: refactor specs
This is a generalisation approach of the hw_zynq target. As the boards
typically use UART1 instead of UART0 (used by qemu), we have to
distinguish between those. Moreover, in general hw_zynq does not imply
zynq_qemu anymore, so that the support of particular boards can be
placed in third-party or community repositories (e.g. Genode world).

Fixes #1926
2016-04-25 10:48:00 +02:00
Norman Feske
f186587cab Unify ipc_msgbuf.h across base platforms
Besides unifying the Msgbuf_base classes across all platforms, this
patch merges the Ipc_marshaller functionality into Msgbuf_base, which
leads to several further simplifications. For example, this patch
eventually moves the Native_connection_state and removes all state
from the former Ipc_server to the actual server loop, which not only
makes the flow of control and information much more obvious, but is
also more flexible. I.e., on NOVA, we don't even have the notion of
reply-and-wait. Now, we are no longer forced to pretend otherwise.

Issue #1832
2016-04-25 10:47:59 +02:00
Norman Feske
0c299c5e08 base: separate native CPU from CPU session
This patch unifies the CPU session interface across all platforms. The
former differences are moved to respective "native-CPU" interfaces.

NOVA is not covered by the patch and still relies on a custom version of
the core-internal 'cpu_session_component.h'. However, this will soon be
removed once the ongoing rework of pause/single-step on NOVA is
completed.

Fixes #1922
2016-04-25 10:47:57 +02:00
Norman Feske
fbc35cb796 base: hide slab implementation details from API
Issue #1908
2016-04-25 10:47:56 +02:00
Norman Feske
051e84c4b4 Move server API concept to base framework
This commit introduces the new `Component` interface in the form of the
headers base/component.h and base/entrypoint.h. The os/server.h API
has become merely a compatibilty wrapper and will eventually be removed.
The same holds true for os/signal_rpc_dispatcher.h. The mechanism has
moved to base/signal.h and is now called 'Signal_handler'.

Since the patch shuffles headers around, please do a 'make clean' in the
build directory.

Issue #1832
2016-04-11 11:51:46 +02:00
Norman Feske
cda07b7da0 base: simplification of the IPC code
This commit replaces the stateful 'Ipc_client' type with the plain
function 'ipc_call' that takes all the needed state as arguments.
The stateful 'Ipc_server' class is retained but it moved from the public
API to the internal ipc_server.h header. The kernel-specific
implementations were cleaned up and simplified. E.g., the 'wait'
function does no longer exist. The badge and exception code are no
longer carried in the message buffers but are handled in kernel-specific
ways.

Issue #610
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
47878bd3e1 Remove 'Ipc_istream' and 'Ipc_ostream' from API
Fixes #610
2016-04-11 11:51:42 +02:00
Norman Feske
4cdfb9bc2f base: remove 'Native_connection_state' from API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
da5d182ad3 base: remove 'Native_thread' from public API
Issue #1832
2016-04-11 11:51:42 +02:00
Norman Feske
dc0ebba1ec base-hw: clean up native_types.h 2016-03-18 22:43:05 +01:00
Norman Feske
84bfb4c04c base: remove 'Native_thread_id' type
Issue #1832
2016-03-18 22:43:01 +01:00
Stefan Kalkowski
5085ad36c3 tool: remove deprecated 'make prepare' mechanism
Fix #1897
2016-03-17 17:02:04 +01:00
Norman Feske
9b0eb720b0 base: remove 'Native_utcb' from public API
Fixes #1905
2016-03-17 17:02:04 +01:00
Norman Feske
9a3185f8ed base-linux: remove chroot support
Fixes #1903
2016-03-08 17:00:54 +01:00
Norman Feske
76db3b9c06 base: retire 'Native_config'
This commit moves the parameters of the stack area to the base-internal
header 'stack_area.h'.

Issue #1832
2016-03-08 17:00:54 +01:00
Norman Feske
7f73e5e879 base: hide internals of the Thread API
This patch moves details about the stack allocation and organization
the base-internal headers. Thereby, I replaced the notion of "thread
contexts" by "stacks" as this term is much more intuitive. The fact that
we place thread-specific information at the bottom of the stack is not
worth introducing new terminology.

Issue #1832
2016-03-07 12:34:46 +01:00
Norman Feske
3473955212 base-linux/nova: unify include/rm_session/client.h
By moving the stub implementation to rm_session_client.cc, we can use
the generic base/include/rm_session/client.h for base-linux and
base-nova and merely use platform-specific implementations.

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
6e7f7bdad4 base: move crt0.h and elf.h to base/internal
Those headers remained unused outside the internal framework. So it is
better to remove them from the public API.

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
2e701f9afa base: update include guards
This patch cleans up the include guards, assisted by the
tool/fix_include_ifndef script.
2016-03-07 12:34:45 +01:00
Norman Feske
e6729316ff base: uniform base-internal header structure
This patch establishes a common organization of header files
internal to the base framework. The internal headers are located at
'<repository>/src/include/base/internal/'. This structure has been
choosen to make the nature of those headers immediately clear when
included:

  #include <base/internal/lock_helper.h>

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
be496c6dc1 base: remove kernel-specific base/sleep.h
With this patch, the platform differences reside solely in the
implementation of the base library.

Issue #1832
2016-03-07 12:34:44 +01:00
Norman Feske
62b1c55399 Integrate CAP session into PD session
This patch integrates the functionality of the former CAP session into
the PD session and unifies the approch of supplementing the generic PD
session with kernel-specific functionality. The latter is achieved by
the new 'Native_pd' interface. The kernel-specific interface can be
obtained via the Pd_session::native_pd accessor function. The
kernel-specific interfaces are named Nova_native_pd, Foc_native_pd, and
Linux_native_pd.

The latter change allowed for to deduplication of the
pd_session_component code among the various base platforms.

To retain API compatibility, we keep the 'Cap_session' and
'Cap_connection' around. But those classes have become mere wrappers
around the PD session interface.

Issue #1841
2016-03-07 12:34:44 +01:00
Norman Feske
b1910cdd54 Integrate SIGNAL session into PD session
This patch removes the SIGNAL service from core and moves its
functionality to the PD session. Furthermore, it unifies the PD service
implementation and terminology across the various base platforms.

Issue #1841
2016-03-07 12:34:44 +01:00
Adrian-Ken Rueegsegger
3a9e5cbd8c Relax tool checks of Muen port
The gnat and gprbuild tools are not necessarily in the PATH when
preparing the port since the effective location is specified by the
--image-muen-gnat-path RUN_OPT.
2016-02-26 11:36:55 +01:00
Reto Buerki
3c23ddb2d5 hw_x86_64_muen: Add support for MSI
Use the new Sinfo::get_dev_info function to retrieve device information
in the platform-specific get_msi_params function. If the requested
device supports MSI, set the IRQ and MSI address/data register values to
enable MSIs in remappable format (see VT-d specification, section
5.1.2.2).

Currently only one MSI per device is supported as the subhandle in the
data register is always set to 0.
2016-02-26 11:36:54 +01:00
Reto Buerki
d137f0f2bf hw_x86_64_muen: Extend sinfo API with device info
The new Sinfo::get_dev_info function can be used to retrieve information
for a PCI device with given source-id (SID). The function returns false
if no device information for the specified device exists.
2016-02-26 11:36:54 +01:00
Reto Buerki
3350c6bf53 hw: Introduce platform-specifc MSI function
The platform-specific get_msi_params function returns MSI parameters for
a device identified by PCI config space address. The function returns
false if either the platform or the device does not support MSI mode of
operation.
2016-02-26 11:36:54 +01:00
Reto Buerki
11ee72eaa6 hw: Add MSI variables to Irq_session_component
Extend the base-hw Irq_session_component class with _is_msi, _address
and _value variables required to support MSI mode of operation.

Return MSI configuration in info() function if _is_msi is set to true.
2016-02-26 11:36:54 +01:00
Reto Buerki
ed54bb2724 hw_x86_64_muen: Adjust _ram_regions function
The available RAM region starts at 25 MiB, not 2 MiB. Also, increase the
region size to 256 MiB.
2016-02-26 11:36:53 +01:00
Reto Buerki
1abff01c66 Update hw_x86_64_muen doc for Muen release 0.7.0 2016-02-26 11:36:53 +01:00
Reto Buerki
aa8e5c5016 Update Muen port to release version 0.7.0 2016-02-26 11:36:53 +01:00
Sebastian Sumpf
1ff7de62f6 muen: remove depenency to ports for make target all 2016-02-26 11:36:52 +01:00
Sebastian Sumpf
d17134baef ldso: Support for RISC-V
issue #1880
2016-02-26 11:36:51 +01:00
Mark Vels
1668983efa base-hw: RISC-V Rocket Core on Zynq
This commit adds rocket core on the Zynq FPGA support to base HW. It also takes
advantage of the new timer infrastructure introduced with the privileged 1.8 and
adds improved TLB flush support.

fixes #1880
2016-02-26 11:36:51 +01:00
Sebastian Sumpf
c246a0d194 base-hw: initial RISC-V support
using the spike instruction emulator

issue #1880
2016-02-26 11:36:51 +01:00
Stefan Kalkowski
5fc9f68941 hw_x86_64: do not reference any muen specifics
Do not build core-muen_on library without the muen soecifier set.
Do not reference files of the muen contrib directory in the first
pass of make's rule analysis, when parding the muen specific kernel
makefile.

Fix #1859
2016-01-26 16:20:47 +01:00
Stefan Kalkowski
c3d4802ac8 hw: re-implement lazy FPU context switch
The new implementation of the FPU and FPU context is taken out to
separate architecture-dependent header files. The generic Cpu_lazy_state
is deleted. There is no hint about the existence of something like an
FPU in the generic non-architexture-dependent code anymore. Instead the
architecture-dependent CPU context of a thread is extended by an FPU
context where supported.

Moreover, the current FPU implementations are enhanced so that threads
that get deleted now release the FPU when still obtaining it.

Fix #1855
2016-01-26 16:20:38 +01:00
Stefan Kalkowski
f539cf1231 hw: adjust core's signal thread's stack size
The stack size should be architecture dependent.

Fix #1854
2016-01-26 16:20:37 +01:00
Stefan Kalkowski
5afad64586 hw: preserve core's context-area (Fix #1853)
Remove core's context-area from its virtual memory allocator
2016-01-26 16:20:37 +01:00
Stefan Kalkowski
7aff1895bf hw: enable SMP for ARM Cortex A9
This commit enables multi-processing for all Cortex A9 SoCs we currently
support. Moreover, it thereby enables the L2 cache for i.MX6 that was not
enabled until now. However, the QEMU variants hw_pbxa9 and hw_zynq still
only use 1 core, because the busy cpu synchronization used when initializing
multiple Cortex A9 cores leads to horrible boot times on QEMU.

During this work the CPU initialization in general was reworked. From now
on lots of hardware specifics were put into the 'spec' specific files, some
generic hook functions and abstractions thereby were eliminated. This
results to more lean implementations for instance on non-SMP platforms,
or in the x86 case where cache maintainance is a non-issue.

Due to the fact that memory/cache coherency and SMP are closely coupled
on ARM Cortex A9 this commit combines so different aspects.

Fix #1312
Fix #1807
2016-01-26 16:20:18 +01:00
Martin Stein
2b2007bc3f hw: add Pl310::Debug register definitions
Ref #1312
2016-01-15 16:42:12 +01:00
Martin Stein
c58de0d80e hw_panda: driver for Cortex-A9 wakeup generator
Ref #1312
2016-01-15 16:42:12 +01:00
Martin Stein
5755245609 hw: end interrupts SMP-safe on ARM (Ref #1312) 2016-01-15 16:42:12 +01:00
Stefan Kalkowski
166672fe16 hw: l2 cache initialization is platform specific
On ARM Cortex A9 platforms the external PL310 L2 cache controller
needs to be initialized dependent on the SoC. For instance on Pandaboard
it needs to call the firmware running in TrustZone's secure world,
on i.MX6 it initializes it directly, on other boards it doesn't need
to be initialized at all, because the bootloader already did so.
Therefore, we should implement the PL310 intialization in board specific
code and not in the base class implementation.

Ref #1312
2016-01-15 16:42:12 +01:00
Stefan Kalkowski
e05d26567d hw: make 'smp' property an aspect (Ref #1312)
This commit separates certain SMP aspects into 'spec/smp' subdirectories.
Thereby it simplifies non-SMP implementations again, where no locking
and several platform specific maintainance operations are not needed.
Moreover, it moves several platform specifics to appropriated places,
removes dead code from x86, and starts to turn global static pointers
into references that are handed over.
2016-01-15 16:42:12 +01:00
Adrian-Ken Rueegsegger
b1b3c7bf34 doc: Extend Muen tutorial to match new build process 2016-01-08 14:37:57 +01:00
Adrian-Ken Rueegsegger
cb68f9a320 hw: Add kernel/spec/muen/target.mk to build Muen SK
This adds the automated compilation of the Muen Separation Kernel and
the required components to the hw_x86_64_muen build process.
2016-01-08 14:37:56 +01:00
Adrian-Ken Rueegsegger
8d2f2b0101 hw: Add port for Muen Separation Kernel
For additional information about the Muen SK refer to the project page
at [1].

[1] - http://muen.codelabs.ch/
2016-01-08 14:37:56 +01:00
Stefan Kalkowski
2316937e58 hw: remove main thread's initial UTCB from vm area
The main thread's UTCB, used during bootstrap of the main thread before
it allocates its context area, needs to be outside the virtual memory
area controlled by the RM session, because it is needed before the main
thread can access its RM session.

Fix #1804
2015-12-10 13:16:27 +01:00
Martin Stein
227b539193 cpu_quota x86_64: fix RAM quota and stack size
The test threads previously used a stack size independent from the machine
word width. Qemu was previously configured to provide 64Mb of RAM which isn't
sufficient for x86_64.

Ref #1805
2015-12-10 13:16:26 +01:00
Martin Stein
02ef3d13a3 hw: explain misleading "Quota exceeded"
Upgrading the quota of a PD session on HW always triggers a "Quota
exceeded" warning. To prevent unecessary debugging effort in the future,
we explain in an in-code comment that the warning is normal.

Ref #1805
2015-12-10 13:16:26 +01:00
Stefan Kalkowski
60ba210a6b hw: reference count capabilities in UTCBs
When capabilities are delegated to components, they are added to the UTCB of the
target thread. Before the thread is able to take out the capability id out of
the UTCB and adapt the user-level capability reference counter, it might happen
that another thread of the same component deletes the same capability because
its user-level reference counter reached zero. If the kernel then destroys the
capability, before the same capability id is taken out of all UTCBs, an
inconsitent view in the component is the result.  To keep an consistent view in
the multi-threading scenario, the kernel now counts how often it puts a
capability into a UTCB. The threads on the other hand hint the kernel when they
took capabilities out of the UTCB, so the kernel can decrement the counter
again. Only when the counter is zero, capabilities can get destructed.

Fix #1623
2015-12-10 13:16:25 +01:00
Stefan Kalkowski
ee4619687b hw: remove 1:1 I/O mappings from virtual memory
Likewise on the x86 branch, we have to remove all virtual memory ranges from the
virtual memory allocator that are used by one-by-one mappings of I/O regions
used by the kernel.

Fix #1797
2015-12-10 13:16:24 +01:00
Martin Stein
bed04f1f16 hw & imx53: kernel Trustzone config for USB armory
On the USB Armory, we want to secure different devices than on other i.MX53
implementations. Thus, add a board specific configuration that is interpreted
by the kernel Trustzone initialization.

Ref #1497
2015-11-29 18:17:04 +01:00
Martin Stein
85ba3259f8 hw & imx53: IRQ injection via Vm::proceed
Enhance the VM state, that can be accessed by a VMM, by a member
'unsigned irq_injection'. In Kernel::Vm::proceed check, whether
irq_injection is set.  If so, check whether irq_injection is a
non-secure IRQ.  If so, let the PIC raise this IRQ in the VM and reset
irq_injection.

Ref #1497
2015-11-29 18:17:04 +01:00
Sebastian Sumpf
0c3dfbad65 base-hw: use signal context list for pending signals
'block_for_signal' and 'pending_signal' now set pending flag in signal context
in order to determine pending signal. The context list is also used by the
'Signal_receiver' during destruction.

Fixes #1738
2015-11-27 12:18:50 +01:00
Alexander Boettcher
826c81ac18 hw_x86: discover all physical memory in core
Fixes #1741
2015-11-04 14:09:28 +01:00
Sebastian Sumpf
2b429ee84c base: Dispatch server signal in entry point
Currently, when a signal arrives in the main thread, the signal dispatcher is
retrieved and called from the main thread, the dispatcher uses a proxy object
that in turn sends an RPC to the entry point. This becomes a problem when the
entry point destroys the dispatcher object, before the dispatch function has
been called by the main thread. Therefore, the main thread should simply send an
RPC to the entry point upon signal arrival and the dispatching should be handled
solely by the entry point.

Issue #1738
2015-10-28 15:06:22 +01:00
Stefan Kalkowski
b585583ec7 core: do not destroy in object pool's apply scope
Destroying an object within the scope of a lambda/functor executed
in the object pool's apply function leads potentially to memory corruption.
Within the scope the corresponding object is locked and unlocked when
leaving the scope. Therefore, it is illegal to free the object's memory meanwhile.
This commit eliminates several places in core that destroyed wrongly in
the object pool's scope.

Fix #1713
2015-09-30 12:20:40 +02:00
Stefan Kalkowski
ccb968ff7d safeguard the synchronized allocator template
* Move the Synced_interface from os -> base
* Align the naming of "synchronized" helpers to "Synced_*"
* Move Synced_range_allocator to core's private headers
* Remove the raw() and lock() members from Synced_allocator and
  Synced_range_allocator, and re-use the Synced_interface for them
* Make core's Mapped_mem_allocator a friend class of Synced_range_allocator
  to enable the needed "unsafe" access of its physical and virtual allocators

Fix #1697
2015-09-30 12:20:39 +02:00
Stefan Kalkowski
53eb666ed0 hw: invalidate all caps of a thread in destruction
Fix #1682
2015-09-30 12:20:39 +02:00
Stefan Kalkowski
37bae7bc1f hw: simplify IPC node's state model (fix #1691)
Merge the Ipc_node class' state PREPARE_AND_AWAIT_REPLY and AWAIT_REPLY,
as well as PREPARE_REPLY ans INACTIVE into one.
2015-09-30 12:20:39 +02:00
Stefan Kalkowski
8c168d7943 hw: use weak pointer when resolving a page-fault
Fix #1674
2015-09-30 12:20:35 +02:00
Stefan Kalkowski
ed52d5a211 Introduce 'spec' subdirectories to outline aspects
Instead of holding SPEC-variable dependent files and directories inline
within the repository structure, move them into 'spec' subdirectories
at the corresponding levels, e.g.:

  repos/base/include/spec
  repos/base/mk/spec
  repos/base/lib/mk/spec
  repos/base/src/core/spec
  ...

Moreover, this commit removes the 'platform' directories. That term was
used in an overloaded sense. All SPEC-relative 'platform' directories are
now named 'spec'. Other files, like for instance those related to the
kernel/architecture specific startup library, where moved from 'platform'
directories to explicit, more meaningful places like e.g.: 'src/lib/startup'.

Fix #1673
2015-09-16 13:58:50 +02:00
Johannes Schlatow
40b31876d2 base-hw: Add basic Zynq-7000 support (QEMU)
Ref #1599
2015-09-09 15:14:28 +02:00
Stefan Kalkowski
458b4d6fc4 base: redesign object pool using lambda interface
Instead of returning pointers to locked objects via a lookup function,
the new object pool implementation restricts object access to
functors resp. lambda expressions that are applied to the objects
within the pool itself.

Fix #884
Fix #1658
2015-09-09 15:14:28 +02:00
Martin Stein
555835c95b hw: unlock kernel before context propagation
Propagating the user context-pointer from C++ code to the mode
transition assembly doesn't touch any CPU global data. Thus, we can
reduce the in-sync window.

Fixes #1223
2015-09-09 15:14:27 +02:00
Martin Stein
91cb3decdb hw_x86_64: move Cpu_context stuff to extra unit
Other platforms implement Kernel::Cpu_context stuff in
kernel/cpu_context.cc. On x86_64, it was implemented in
kernel/thread.cc. The commit fixes this inconsistency to the other
platforms.

Ref #1652
2015-09-09 15:14:27 +02:00
Martin Stein
4e98a0f64a hw: get rid of kernel/thread_* files
The distinction between Kernel::Thread and Kernel::Thread_base is
unnecessary as currently all Hw platforms would have the same content in
the latter class. Thus I've merged Kernel::Thread_base into
Kernel::Thread. Thereby, Kernel::Thread_event can be moved to
kernel/thread.h.

Ref #1652
2015-09-09 15:14:27 +02:00
Alexander Boettcher
dd9793cdc7 hw: show ip and sp during unresolvable pagefault
Issue #1652
2015-09-09 15:14:27 +02:00
Alexander Boettcher
c5877b5575 hw: remove access_thread_regs syscall
Issue #1652
2015-09-09 15:14:27 +02:00
Christian Helmuth
30db0c5364 hw: prevent compiler warning 2015-08-31 09:09:23 +02:00
Stefan Kalkowski
9f1beaa036 hw_x86_64: use 'muen' SPEC to implement aspect 2015-08-31 09:09:22 +02:00
Reto Buerki
750c4ad81d Add tutorial for base-hw on Muen
The tutorial describes how to build a Genode scenario using the
base-hw x86_64_muen target and run it as a subject on the Muen SK.
2015-08-27 13:48:26 +02:00
Reto Buerki
ad411e1a90 hw_x86_64_muen: Implement PIC take_request()
The Muen-specific PIC implementation provides the irq_occurred()
function which is used to register an IRQ with the PIC upon thread
exception.

The occurred IRQs are stored in a boolean array internally and handed
out to a CPU via take_request().
2015-08-27 13:48:25 +02:00
Reto Buerki
fa26805fd7 hw_x86_64_muen: Implement paravirt timer driver
The driver uses the timer page containing a vector and timer value to
implement the start_one_shot() and value() functions. The timer value
designates the absolute tick count of the next event.

The address of the time page is acquired using the get_memregion_info
Sinfo API function.
2015-08-27 13:48:25 +02:00
Reto Buerki
4a51f933ce hw_x86_64_muen: Add initial pagetables file
The initial pagetables for hw_x86_64_muen specify an identity mapping
from 2MiB to 1GiB plus mappings for the paravirt pages (sinfo, timer,
...).
2015-08-27 13:48:25 +02:00
Reto Buerki
c434a5ceec hw_x86_64_muen: Add C++ implementation of Sinfo API
The Muen Sinfo API is used to retrieve information about the execution
environment of a subject running on the Muen Separation Kernel.

While the C++ API is defined in sinfo.h, musinfo.h specifies the
internal format of the information stored in the Sinfo pages provided by
the Muen SK. It is a copy of the file contained in the libmusinfo
library of the Muen project. That is the reason why the coding style in
this file differs from the official style.
2015-08-27 13:48:25 +02:00
Reto Buerki
5036b96c11 hw_x86_64_muen: Add fake Timer::ms_to_tics impl
This makes the scheduler happy and it starts scheduling threads:

Booting Muen kernel v0.6.0-329-gdd545fe-UNCLEAN
0004|kernel initialized
0004|Genode 14.11-400-gecee95b
0004|int main(): --- start init ---
0004|[init -> test-printf] -1 = -1 = -1
2015-08-27 13:48:25 +02:00
Adrian-Ken Rueegsegger
21fb356cd4 hw_x86_64_muen: Provide Muen-specific serial
Subjects on Muen are not allowed to access the BIOS data area. Instead a
serial console is emulated on the fixed I/O port 0x3f8.
2015-08-27 13:48:25 +02:00
Reto Buerki
96a0820e89 Add Muen-specific platform_support.cc
The file specifies Muen-specific MMIO regions: Sinfo and paravirt timer
pages.
2015-08-27 13:48:25 +02:00
Adrian-Ken Rueegsegger
c310e335ae hw_x86_64: Enable more specialized setup_irq_mode()
Move Platform::setup_irq_mode function from x86 platform_support.cc to
x86_64 specific file. This will enable the upcoming x86_64_muen platform
to provide a separate implementation.
2015-08-27 13:48:25 +02:00
Reto Buerki
dcd20f1566 hw: skeleton for building x86_64_muen
The hw_x86_64_muen platform is a x86/64 base-hw kernel which runs as
isolated subject (guest) on the Muen Separation Kernel (SK) [1].

The platform is implemented as an extension to hw_x86_64 replacing the
PIC and timer drivers with paravirtualized variants. The skeleton
contains a dummy PIC and timer implementation for now.

[1] - http://muen.sk
2015-08-27 13:48:24 +02:00
Alexander Boettcher
9cd85ddcf7 hw: call lock_for_destruction in platform_pd
Issue #1607
2015-08-25 10:11:07 +02:00
Adrian-Ken Rueegsegger
ec92e9c3df hw_x86_64: Only handle masking of I/O APIC IRQs
Ignore toggle requests for vectors not assigned to the I/O APIC.

Fixes #1651
2015-08-21 11:00:59 +02:00
Adrian-Ken Rueegsegger
780863007d hw_x86_64: Use PAUSE instruction in wait_for_interrupt
Add spin loop hint by means of the PAUSE instruction since
wait_for_interrupt is called in a busy loop. This should improve processor
performance and reduce power consumption.

Note: HLT cannot be used since it is a privileged instruction and the idle
      thread is executed in userspace.
2015-08-21 11:00:59 +02:00
Reto Buerki
2a0b6fb541 hw_x86_64: Factor out _core_only_mmio_regions function
Move the _core_only_mmio_regions function to the
x86_64/platform_support.cc file. This is required to make it overridable
for other platforms deriving from x86.
2015-08-21 11:00:59 +02:00
Adrian-Ken Rueegsegger
afb827a96f hw_x86_64: Restore kernel SS on MT entry 2015-08-21 11:00:59 +02:00
Adrian-Ken Rueegsegger
0e065c162b hw_x86_64: Log unknown exceptions of Cpu_idle 2015-08-21 11:00:59 +02:00
Adrian-Ken Rueegsegger
c2ff0ae9d4 Minor cleanup fixes
- Fix spelling errors
- Remove extra semicolons
- Remove extra spaces

Fixes #1650
2015-08-21 11:00:59 +02:00
Stefan Kalkowski
eafe5e81e3 core: unify and simplify paging code (Fix #1641)
For most platforms except of NOVA a distinction between pager entrypoint
and pager activation is not needed, and only exists due to historical
reasons. Moreover, the pager thread's execution path is almost identical
between most platforms excluding NOVA, HW, and Fisco.OC. Therefore,
this commit unifies the pager loop for the other platforms, and removes
the pager activation class.
2015-08-21 10:58:59 +02:00
Martin Stein
f3e76b3e9a base: use BDA header in base-nova like base-hw
Moves the Bios Data Area header from base-hw to base. Modifies the
base-nova core console that it uses the header as replacement for
the previous BDA bit logic.

Ref #1625
2015-07-21 09:30:12 +02:00
Martin Stein
ba18ab7225 run/cpu_quota: raise measurement precision further
Three things were done:

* Timouts are measured in an asynchronous way to be able to start counters
  after the potentially expensive RPC that starts the timeout.
* Timeouts were increased from 45 and 15 seconds to 60 and 20 seconds
  because at least on Arndale, results were not stable enough.
* Counting is done on 'unsigned long long' instead of 'unsigned' because
  with the higher timeouts, overflows occured.

Fixes #1628
2015-07-21 09:30:12 +02:00
Adrian-Ken Rueegsegger
2fe0860ba7 hw_x86_64: Extend inital page tables up to 1 GiB
To avoid future issues with regards to non-existent mappings in the
initial pagetables, extend them to cover the memory range of 2 MiB up to
1 GiB.
2015-07-21 09:30:11 +02:00
Alexander Boettcher
73f7a95627 hw: use bios data area to detect com/uart ports
Fixes #1625
2015-07-21 09:30:11 +02:00
Alexander Boettcher
0b019d0508 base: move x86 uart driver from nova to base
So it can be reused by base-hw-x86 instead of re-writing it.

Fixes #1403
2015-07-21 09:30:11 +02:00
Martin Stein
bc8a5cbb2a hw: fix CPU-quota bug in Platform_thread
Since the HW-kern-caps commit, there was a bug in the Platform_thread
constructor. When called for a user thread, the constructor stated 0
as CPU quota at the Kernel_object instead of its quota input-paramater.

Fixes #1620
2015-07-07 19:48:08 +02:00
Stefan Kalkowski
89255c3979 remove Versatile Express board (Fix #1611) 2015-07-07 19:48:06 +02:00
Stefan Kalkowski
de4a98c777 hw: avoid using RM session in platform thread
Fix #888
2015-07-01 14:46:18 +02:00
Stefan Kalkowski
f5d5ed9637 hw: use kernel signal API for page-fault signals
Instead of using the Genode user-level signal API to signal page-faults to
a page-fault handler, use the kernel API directly. Thereby the accounting
of signal contexts needed for each paging subject can be done easily.

Fix #956
2015-07-01 14:46:18 +02:00
Stefan Kalkowski
57e2f3affc hw: remove redundant file from signal library
The file seems to be there for historical reasons only.

Ref #956
2015-07-01 14:46:18 +02:00
Stefan Kalkowski
8abd70e6e7 hw: allocate core's page-tables outside of binary
Moreover, be strict when calculating the page-table requirements of
core, which is architecture specific, and declare the virtual memory
requirements of core architecture-wise.

Ref #1588
2015-07-01 14:46:17 +02:00
Stefan Kalkowski
3ee2997198 hw: remove unused declaration in core
Ref #1588
2015-07-01 14:46:17 +02:00
Stefan Kalkowski
6552d47e60 hw: eliminate missing references for consts
Fix #1606
2015-07-01 14:46:16 +02:00
Norman Feske
281d3ffba9 hw: free correct IRQ when closing IRQ session
The ~Irq_session_component relied on the IRQ number obtained by the
corresponding kernel IRQ object to mark the IRQ as free at the IRQ
allocator. However, since the kernel IRQ object is initialized not
before the 'sigh' function is called, the IRQ of sessions that
never called 'sigh' could not be freed correctly. This patch fixes
the problem by not relying on the kernel IRQ object for obtaining
the number in the destructor but using the '_irq_number' member
variable instead.
2015-07-01 14:46:15 +02:00
Stefan Kalkowski
2a351215f4 base: remove pager code from public API
Fix #1593
2015-07-01 14:46:15 +02:00
Stefan Kalkowski
cc58b11998 hw: replace page table allocator with static one
Instead of organizing page tables within slab blocks and allocating such
blocks dynamically on demand, replace the page table allocator with a
simple, static alternative. The new page table allocator is dimensioned
at compile-time. When a PD runs out of page-tables, we simply flush its
current mappings, and re-use the freed tables. The only exception is
core/kernel that should not produce any page faults. Thereby it has to
be ensured that core has enough page tables to populate it's virtual
memory.

A positive side-effect of this static approach is that the accounting
of memory used for page-tables is now possible again. In the dynamic case
there was no protocol existent that solved the problem of donating memory
to core during a page fault.

Fix #1588
2015-06-22 14:43:41 +02:00
Adrian-Ken Rueegsegger
3291ca59a3 hw_x86_64: Extend initial PTs to map 2-16 MiB
Ref #1588
2015-06-22 14:43:41 +02:00
Norman Feske
959572968d core: provide thread exec times via TRACE service
This patch enable clients of core's TRACE service to obtain the
execution times of trace subjects (i.e., threads). The execution time is
delivered as part of the 'Subject_info' structure.

Right now, the feature is available solely on NOVA. On all other base
platforms, the returned execution times are 0.

Issue #813
2015-06-22 14:43:38 +02:00
Stefan Kalkowski
f78aaf2234 hw: seal capability leak (fix #1568)
Do not initially transfer UTCB dataspace and parent capability to a thread
that is no main thread.
2015-06-22 14:43:35 +02:00
Stefan Kalkowski
b64f23d4c3 hw: free page tables (fix #1573) 2015-06-22 14:43:35 +02:00
Stefan Kalkowski
409ac1468e core: implement core allocator's free (ref #1573) 2015-06-22 14:43:35 +02:00
Adrian-Ken Rueegsegger
965d85d52d hw_x86_64: Support for dynamic IRQ mode setting
Add a Platform::setup_irq_mode function which enables the IRQ session to
update the trigger mode and polarity of the associated IRQ according to
the session parameters. On ARM this function is a nop.

This change enables the x86_64 platform to support devices which use
arbitrary trigger modes and polarity settings, e.g. AHCI on QEMU and
real hardware.

Fixes #1528.
2015-05-28 11:17:28 +02:00
Martin Stein
8a99c08ae4 hw: always panic on removal of scheduler head
Because of helping, it is possible that a core thread that wants to
destroy another thread at the kernel is using the scheduling context of
the thread that shall be destroyed at this point in time. When building
without GENODE_RELEASE defined, this always triggers an assertion in the
kernel. But when building with GENODE_RELEASE defined, this might silently
lead to kernel-memory corruption. This commit eliminates the latter case.
Should be reverted as soon as the scheduler is able to remove its head.

Ref #1537
2015-05-26 09:40:04 +02:00
Stefan Kalkowski
e081554731 hw: kernel backed capabilities (Fix #1443) 2015-05-26 09:40:04 +02:00
Stefan Kalkowski
4431ab7354 hw_x86_64: fix kernel stack initialization
Fix #1533
2015-05-26 09:40:04 +02:00
Stefan Kalkowski
db5e4f70f1 hw: replace 'placement new' with 'construct_at<>'
Placement new can be misleading, as we already overload the new operator
to construct objects via pointers to allocators. To prohibit any problems here,
and to use one consistent approach, we can explicitely construct the object
with the already available 'construct_at' template function.

Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
b8f178e647 hw: move MMU-related functions into Address_space
* Introduce a hw specific Address_space interface for protection
  domains, which combines all memory-virtualization related functionality
* Introduce a core-specific Platform_pd object that solves all the hen-egg
  problems formerly distributed in kernel and core-platform code

Ref #595
Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
d4c55bec2a hw: implement 'Address_space' interface
Ref #595
Ref #1443
2015-05-26 09:40:03 +02:00
Stefan Kalkowski
73c3a81e0b base: make PD session upgradeable
Ref #1443
2015-05-26 09:40:02 +02:00
Reto Buerki
58178949ef hw_x86_64: Make AHCI driver work
The assumption that IRQs in the legacy ISA range are always
edge-triggered is wrong. For the free-for-use IRQs it depends on the
actual device which uses the specific IRQ. Therefore, treat IRQs 9, 10
and 11 as level-triggered.
2015-05-26 09:39:50 +02:00
Reto Buerki
afec233f50 hw_x86_64: Use _edge_triggered() in _create_irt_entry() 2015-05-26 09:39:50 +02:00
Reto Buerki
5eed6de910 hw_x86_64: Let _edge_triggered() operate on IRQ
Use the base IRQ in the _edge_triggered() utility function, not the
remapped vector.
2015-05-26 09:39:50 +02:00
Reto Buerki
6af893123e hw_x86_64: Only block masking of legacy IRQs
Allow legacy IRQ unmasking. Initially, all IRQs are masked and must be
explicitly unmasked by a driver.
2015-05-26 09:39:50 +02:00
Reto Buerki
e034846f32 hw_x86_64: Initially mask IRQs in _create_irt_entry 2015-05-26 09:39:50 +02:00
Christian Prochaska
e7f869611c hw: static constexpr function when reinterpret cast is used
Issue #1511
2015-05-26 09:39:47 +02:00
Alexander Boettcher
e84284c0cd base: remove shared irq from core
Cleanup commit after all relevant drivers got adapted to use the x86 platform
driver (pci_drv).

Issue #1471
2015-05-26 09:39:47 +02:00
Martin Stein
c6417051ce hw & x86: Use register framework for IRTEs
Ref #1494
2015-05-26 09:39:45 +02:00
Martin Stein
6ec39d8df5 hw & x86: Style fixes for cpu_support.h
Ref #1494
2015-05-26 09:39:45 +02:00
Adrian-Ken Rueegsegger
f99fab544a hw_x86_64: Add x86-specific I/O mem allocator init
Enable a platform to specify how the MMIO memory allocator is to be
initialized. On ARM the existing behavior is kept while on x86 the I/O
memory is defined as the entire address space excluding the core only
RAM regions. This aligns the hw_x86_64 I/O memory allocator
initialization with how it is done for other x86 kernels such as NOVA or
Fiasco.
2015-05-26 09:39:45 +02:00
Adrian-Ken Rueegsegger
36b2cf932b hw_x86_64: Initialize complete I/O APIC IRT entries
Also set high 32 bits of I/O APIC redirection table entries.
2015-05-20 17:53:00 +02:00
Adrian-Ken Rueegsegger
f2fe0eccb8 hw_x86_64: Explicitly initialize MXCSR
The assures that the MXCSR is initialized to the recommended value.
2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
ded302c61c hw_x86_64: Perform lazy FPU state initialization
Perform lazy-initialization of FPU state when it is enabled for the
first time. This assures that the FXSAVE area (including the stored
MXCSR) is always properly setup and initialized to the platform default
values.
2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
a0ec317753 hw_x86_64: Explicitly set all FPU-related CR flags
Perform all FPU-related setup in the Cpu class' init_fpu function instead of
the general system bring-up assembly code.

Set all required control register 0 and 4 flags according to Intel SDM Vol. 3A,
sections 9.2 and 9.6 instead of only enabling FPU error reporting and OSFXSR.
2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
5eb75e9e81 hw_x86_64: Add control register 4 to Cpu class 2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
fdbb073414 hw_x86_64: Log ip on unknown exception 2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
4d700fe2ae hw_x86_64: Emit debug message on #UD
Print information when handling an undefined instruction exception.
2015-05-20 17:52:59 +02:00
Adrian-Ken Rueegsegger
370271324e hw_x86_64: Simplify kernel physical init
Merge finish_init_phys_kernel into init_phys_kernel function.
2015-05-20 17:52:58 +02:00
Reto Buerki
bb06826c95 hw_x86_64: Factor out initial PT to separate file
This allows the specification of different initial pagetables for a
platform based on x86_64 (e.g. Muen).
2015-05-20 17:52:58 +02:00
Alexander Boettcher
d998df3b7f base: extend irq session to support MSIs
Works on base-nova and base-foc, the other kernels have no MSI support.

Issue #1216
2015-05-20 17:39:14 +02:00
Martin Stein
7c133add52 hw: acknowledge IRQs via Kernel::ack_irq
In the past, when the user blocked for an IRQ signal, the last signal was
acknowledged automatically thereby unmasking the IRQ. Now, the signal session
got a dedicated RPC for acknowledging IRQs and the HW back-end of that RPC
acknowledged the IRQ signal too. This led to the situation that IRQs were
unmasked twice. However, drivers expect an interrupt to be unmasked only on
the Irq_session::ack_irq and thus IRQ unmasking was moved from
Kernel::ack_signal to a dedicated kernel call.

Fixes #1493
2015-05-06 10:55:23 +02:00
Stefan Kalkowski
e61a3db30d hw: separate function declaration/implementation
Move kernel object functions from its headers to compilation units,
thereby reducing the kernel's text section, cache, and TLB footprint.

Fix #1492
2015-05-06 10:55:23 +02:00
Christian Helmuth
98def2488a thread: move Thread_base::myself() to separate file
The thread library (thread.cc) in base-foc shared 95% of the code with
the generic implementation except myself(). Therefore, its
implementation is now separated from the other generic sources into
myself.cc, which allows base-foc to use a foc-specific primitive to
enable our base libraries in L4Linux.

Issue #1491
2015-05-06 10:55:17 +02:00
Martin Stein
c9272937e7 CPU session: apply quota via relative weightings
Physical CPU quota was previously given to a thread on construction only
by directly specifying a percentage of the quota of the according CPU
session. Now, a new thread is given a weighting that can be any value.
The physical counter-value of such a weighting depends on the weightings
of the other threads at the CPU session. Thus, the physical quota of all
threads of a CPU session must be updated when a weighting is added or
removed. This is each time the session creates or destroys a thread.

This commit also adapts the "cpu_quota" test in base-hw accordingly.

Ref #1464
2015-05-06 10:55:16 +02:00
Martin Stein
955977b516 hw: syscall for changing a threads physical quota
This commit also extends the "cpu_scheduler" test to test the back-end of the
new syscall.

Ref #1464
2015-04-23 16:51:33 +02:00
Martin Stein
e4f560f39b hw: change round-robin scheduling slice to 10 ms
Previously, it was set to 100 ms which caused a remarkable disadvantage
in reactivity.

Ref #1464
2015-04-23 16:51:33 +02:00
Martin Stein
de9d69a6d7 hw: re-enable kernel tests with the new run env
The new run env doesn't pass the "core_type" parameter at one point
which is why we have to pass it through a global HW-specific variable.

Ref #1464
2015-04-23 16:51:33 +02:00
Alexander Boettcher
faa25e1df6 base: make irq_session asynchronous
second step

options: factor out common parts of irq_session_component.cc
options: use on foc arm no proxy threads

Fixes #1456
2015-04-23 16:47:58 +02:00
Alexander Boettcher
e2cbc7c5b3 base: unify some irq_session headers
remove repos/base-*/include/irq_session headers and use only a unification
from   repos/base/include/irq_session

first step

Issue #1456
2015-04-23 16:47:57 +02:00
Norman Feske
eaab23c012 base: const-correctness of Allocator interface
This patch adds const qualifiers to the functions Allocator::consumed,
Allocator::overhead, Allocator::avail, and Range_allocator::valid_addr.

Fixes #1481
2015-04-17 16:13:22 +02:00
Stefan Kalkowski
0188b08f6a hw: construct kernel irq objects on demand
Ref #1443
2015-04-17 16:13:21 +02:00
Stefan Kalkowski
b32af4e0a4 hw: directly reference kernel objects from core
Instead of handing over object ids to the kernel, which has to find them
in object pools then, core can simply use object pointers to reference
kernel objects.

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
c850462f43 hw: replace kernel's object id allocators
Instead of having an ID allocator per object class use one global allocator for
all. Thereby artificial limitations for the different object types are
superfluent. Moreover, replace the base-hw specific id allocator implementation
with the generic Bit_allocator, which is also memory saving.

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
2df86cd34b hw: rename bin_* syscalls with delete_*
The verb "bin" in the context of destroying kernel objects seems pretty
unusual in contrast to "delete". When reading "bin" in the context of
systems software an association to something like "binary" is more likely.

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
b949489641 base: remove local capability from generic base
* Instead of using local capabilities within core's context area implementation
  for stack allocation/attachment, simply do both operations while stack gets
  attached, thereby getting rid of the local capabilities in generic code
* In base-hw the UTCB of core's main thread gets mapped directly instead of
  constructing a dataspace component out of it and hand over its local
  capability
* Remove local capability implementation from all platforms except Linux

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
a168c9d6ce core: remove global capability id counter
The global capability ID counter is not used by NOVA and Fiasco.OC
and in the future not needed by base-hw too. Thereby, remove the static
counter variable from the generic code base and add it where appropriated.

Ref #1443
2015-04-17 16:13:19 +02:00
Stefan Kalkowski
358380046c base: assign allocator and quota to platform pd
Enable platform specific allocations and ram quota accounting for
protection domains. Needed to allocate object identity references
in the base-hw kernel when delegating capabilities via IPC.
Moreover, it can be used to account translation table entries in the
future.

Ref #1443
2015-04-17 16:13:19 +02:00