Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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/*-
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2017-11-27 15:10:39 +00:00
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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2001-08-16 09:29:35 +00:00
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* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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2001-08-09 02:09:34 +00:00
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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2001-08-09 02:09:34 +00:00
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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2001-09-03 22:58:05 +00:00
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* from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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* $FreeBSD$
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*/
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2001-12-11 23:33:44 +00:00
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#ifndef _MACHINE_PCPU_H_
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#define _MACHINE_PCPU_H_
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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2002-01-08 04:40:13 +00:00
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#include <machine/asmacros.h>
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2008-09-02 21:13:54 +00:00
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#include <machine/cache.h>
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2001-10-20 15:57:09 +00:00
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#include <machine/frame.h>
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#include <machine/intr_machdep.h>
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2001-09-03 22:58:05 +00:00
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#define ALT_STACK_SIZE 128
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2004-05-26 12:06:52 +00:00
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struct pmap;
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2002-03-04 07:12:36 +00:00
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2001-08-16 09:29:35 +00:00
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/*
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* Inside the kernel, the globally reserved register g7 is used to
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* point at the globaldata structure.
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*/
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2001-12-11 23:33:44 +00:00
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#define PCPU_MD_FIELDS \
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2008-09-02 21:13:54 +00:00
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struct cacheinfo pc_cache; \
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2002-05-25 02:39:28 +00:00
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struct intr_request pc_irpool[IR_FREE]; \
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struct intr_request *pc_irhead; \
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struct intr_request **pc_irtail; \
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struct intr_request *pc_irfree; \
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2008-08-13 20:30:28 +00:00
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struct pmap *pc_pmap; \
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2002-03-04 07:12:36 +00:00
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vm_offset_t pc_addr; \
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2015-08-04 19:46:13 +00:00
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vm_offset_t pc_qmap_addr; \
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2005-04-16 14:57:38 +00:00
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u_long pc_tickref; \
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u_long pc_tickadj; \
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2010-07-29 12:08:46 +00:00
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u_long pc_tickincrement; \
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- USIII-based machines can consist of CPUs running at different
frequencies (and having different cache sizes) so use the STICK
(System TICK) timer, which was introduced due to this and is
driven by the same frequency across all CPUs, instead of the
TICK timer, whose frequency varies with the CPU clock, to drive
hardclock. We try to use the STICK counter with all CPUs that are
USIII or beyond, even when not necessary due to identical CPUs,
as we can can also avoid the workaround for the BlackBird erratum
#1 there. Unfortunately, using the STICK counter currently causes
a hang with USIIIi MP machines for reasons unknown, so we still
use the TICK timer there (which is okay as they can only consist
of identical CPUs).
- Given that we only (try to) synchronize the (S)TICK timers of APs
with the BSP during startup, we could end up spinning forever in
DELAY(9) if that function is migrated to another CPU while we're
spinning due to clock drift afterwards, so pin to the CPU in order
to avoid migration. Unfortunately, pinning doesn't work at the
point DELAY(9) is required by the low-level console drivers, yet,
so switch to a function pointer, which is updated accordingly, for
implementing DELAY(9). For USIII and beyond, this would also allow
to easily use the STICK counter instead of the TICK one here,
there's no benefit in doing so however.
While at it, use cpu_spinwait(9) for spinning in the delay-
functions. This currently is a NOP though.
- Don't set the TICK timer of the BSP to 0 during at startup as
there's no need to do so.
- Implement cpu_est_clockrate().
- Unfortunately, USIIIi-based machines don't provide a timecounter
device besides the STICK and TICK counters (well, in theory the
Tomatillo bridges have a performance counter that can be (ab)used
as timecounter by configuring it to count bus cycles, though unlike
the performance counter of Schizo bridges, the Tomatillo one is
broken and counts Sun knows what in this mode). This means that
we've to use a (S)TICK counter for timecounting, which has the old
problem of not being in sync across CPUs, so provide an additional
timecounter function which binds itself to the BSP but has an
adequate low priority.
2008-09-03 17:39:19 +00:00
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u_int pc_clock; \
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2010-02-20 23:24:19 +00:00
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u_int pc_impl; \
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2008-08-13 20:30:28 +00:00
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u_int pc_mid; \
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2002-08-15 05:24:55 +00:00
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u_int pc_node; \
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2002-03-04 05:20:29 +00:00
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u_int pc_tlb_ctx; \
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u_int pc_tlb_ctx_max; \
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2013-04-08 19:19:10 +00:00
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u_int pc_tlb_ctx_min; \
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- Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter
in place. To do per-cpu stats, convert all fields that previously were
maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
before we have set up UMA and we can do counter_u64_alloc(), provide an
early counter mechanism:
o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
so that at early stages of boot, before counters are allocated we already
point to a counter that can be safely written to.
o For sparc64 that required a whole dummy pcpu[MAXCPU] array.
Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.
This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html
Reviewed by: kib, gallatin, marius, lidl
Differential Revision: https://reviews.freebsd.org/D10156
2017-04-17 17:34:47 +00:00
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char __pad[653]
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2001-12-11 23:33:44 +00:00
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2008-08-19 19:53:52 +00:00
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#ifdef _KERNEL
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Implement a facility for dynamic per-cpu variables.
- Modules and kernel code alike may use DPCPU_DEFINE(),
DPCPU_GET(), DPCPU_SET(), etc. akin to the statically defined
PCPU_*. Requires only one extra instruction more than PCPU_* and is
virtually the same as __thread for builtin and much faster for shared
objects. DPCPU variables can be initialized when defined.
- Modules are supported by relocating the module's per-cpu linker set
over space reserved in the kernel. Modules may fail to load if there
is insufficient space available.
- Track space available for modules with a one-off extent allocator.
Free may block for memory to allocate space for an extent.
Reviewed by: jhb, rwatson, kan, sam, grehan, marius, marcel, stas
2009-06-23 22:42:39 +00:00
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extern void *dpcpu0;
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2002-01-08 04:40:13 +00:00
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struct pcb;
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2001-12-11 23:33:44 +00:00
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struct pcpu;
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2001-09-03 22:58:05 +00:00
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2017-05-17 16:32:24 +00:00
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register struct pcb *curpcb __asm__(__XSTRING(PCB_REG));
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register struct pcpu *pcpup __asm__(__XSTRING(PCPU_REG));
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2001-10-20 15:57:09 +00:00
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2017-02-19 02:03:09 +00:00
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#define get_pcpu() (pcpup)
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2001-12-11 23:33:44 +00:00
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#define PCPU_GET(member) (pcpup->pc_ ## member)
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2007-03-11 05:54:29 +00:00
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2011-11-15 20:17:18 +00:00
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static __inline __pure2 struct thread *
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__curthread(void)
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{
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struct thread *td;
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__asm("ldx [%" __XSTRING(PCPU_REG) "], %0" : "=r" (td));
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return (td);
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}
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#define curthread (__curthread())
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2007-03-11 05:54:29 +00:00
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/*
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* XXX The implementation of this operation should be made atomic
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* with respect to preemption.
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*/
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2007-06-04 21:38:48 +00:00
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#define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
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#define PCPU_INC(member) PCPU_ADD(member, 1)
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2001-12-11 23:33:44 +00:00
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#define PCPU_PTR(member) (&pcpup->pc_ ## member)
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#define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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2001-08-16 09:29:35 +00:00
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#endif /* _KERNEL */
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2001-12-11 23:33:44 +00:00
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#endif /* !_MACHINE_PCPU_H_ */
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