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freebsd-nq/sys/ia64/include/md_var.h

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This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
/*-
* Copyright (c) 1998 Doug Rabson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_MD_VAR_H_
#define _MACHINE_MD_VAR_H_
/*
* Miscellaneous machine-dependent declarations.
*/
Update for the KDB framework: o ksym_start and ksym_end changed type to vm_offset_t. o Make debugging support conditional upon KDB instead of DDB. o Call kdb_enter() instead of breakpoint(). o Remove implementation of Debugger(). o Call kdb_trap() according to the new world order. unwinder: o s/db_active/kdb_active/g o Various s/ddb/kdb/g o Add support for unwinding from the PCB as well as the trapframe. Abuse a spare field in the special register set to flag whether the PCB was actually constructed from a trapframe so that we can make the necessary adjustments. md_var.h: o Add RSE convenience macros. o Add ia64_bsp_adjust() to add or subtract from BSP while taking NaT collections into account.
2004-07-10 22:59:30 +00:00
struct ia64_fdesc {
uint64_t func;
uint64_t gp;
};
#define FDESC_FUNC(fn) (((struct ia64_fdesc *) fn)->func)
#define FDESC_GP(fn) (((struct ia64_fdesc *) fn)->gp)
/* Convenience macros to decompose CFM & ar.pfs. */
#define IA64_CFM_SOF(x) ((x) & 0x7f)
#define IA64_CFM_SOL(x) (((x) >> 7) & 0x7f)
#define IA64_CFM_SOR(x) (((x) >> 14) & 0x0f)
#define IA64_CFM_RRB_GR(x) (((x) >> 18) & 0x7f)
#define IA64_CFM_RRB_FR(x) (((x) >> 25) & 0x7f)
#define IA64_CFM_RRB_PR(x) (((x) >> 32) & 0x3f)
Some code churn: o Eliminate IA64_PHYS_TO_RR6 and change all places where the macro is used by calling either bus_space_map() or pmap_mapdev(). o Implement bus_space_map() in terms of pmap_mapdev() and implement bus_space_unmap() in terms of pmap_unmapdev(). o Have ia64_pib hold the uncached virtual address of the processor interrupt block throughout the kernel's life and access the elements of the PIB through this structure pointer. This is a non-functional change with the exception of using ia64_ld1() and ia64_st8() to write to the PIB. We were still using assignments, for which the compiler generates semaphore reads -- which cause undefined behaviour for uncacheable memory. Note also that the memory barriers in ipi_send() are critical for proper functioning. With all the mapping of uncached memory done by pmap_mapdev(), we can keep track of the translations and wire them in the CPU. This then eliminates the need to reserve a whole region for uncached I/O and it eliminates translation traps for device I/O accesses.
2010-02-14 16:56:24 +00:00
/* Convenience function (inline) to adjust backingstore pointers. */
Update for the KDB framework: o ksym_start and ksym_end changed type to vm_offset_t. o Make debugging support conditional upon KDB instead of DDB. o Call kdb_enter() instead of breakpoint(). o Remove implementation of Debugger(). o Call kdb_trap() according to the new world order. unwinder: o s/db_active/kdb_active/g o Various s/ddb/kdb/g o Add support for unwinding from the PCB as well as the trapframe. Abuse a spare field in the special register set to flag whether the PCB was actually constructed from a trapframe so that we can make the necessary adjustments. md_var.h: o Add RSE convenience macros. o Add ia64_bsp_adjust() to add or subtract from BSP while taking NaT collections into account.
2004-07-10 22:59:30 +00:00
static __inline uint64_t
ia64_bsp_adjust(uint64_t bsp, int nslots)
{
int bias = ((unsigned int)bsp & 0x1f8) >> 3;
nslots += (nslots + bias + 63*8) / 63 - 8;
return bsp + (nslots << 3);
}
#ifdef _KERNEL
Add __elfN(dump_thread). This function is called from __elfN(coredump) to allow dumping per-thread machine specific notes. On ia64 we use this function to flush the dirty registers onto the backingstore before we write out the PRSTATUS notes. Tested on: alpha, amd64, i386, ia64 & sparc64 Not tested on: arm, powerpc
2004-08-11 02:35:06 +00:00
struct _special;
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
struct thread;
struct trapframe;
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
Some code churn: o Eliminate IA64_PHYS_TO_RR6 and change all places where the macro is used by calling either bus_space_map() or pmap_mapdev(). o Implement bus_space_map() in terms of pmap_mapdev() and implement bus_space_unmap() in terms of pmap_unmapdev(). o Have ia64_pib hold the uncached virtual address of the processor interrupt block throughout the kernel's life and access the elements of the PIB through this structure pointer. This is a non-functional change with the exception of using ia64_ld1() and ia64_st8() to write to the PIB. We were still using assignments, for which the compiler generates semaphore reads -- which cause undefined behaviour for uncacheable memory. Note also that the memory barriers in ipi_send() are critical for proper functioning. With all the mapping of uncached memory done by pmap_mapdev(), we can keep track of the translations and wire them in the CPU. This then eliminates the need to reserve a whole region for uncached I/O and it eliminates translation traps for device I/O accesses.
2010-02-14 16:56:24 +00:00
/*
* Return value from ia64_init. Describes stack to switch to.
*/
Allocate a stack for thread0 and switch to it before calling mi_startup(). This frees up kstack for static PAL/SAL calls and double-fault handling.
2008-02-04 02:21:33 +00:00
struct ia64_init_return {
uint64_t bspstore;
uint64_t sp;
};
Some code churn: o Eliminate IA64_PHYS_TO_RR6 and change all places where the macro is used by calling either bus_space_map() or pmap_mapdev(). o Implement bus_space_map() in terms of pmap_mapdev() and implement bus_space_unmap() in terms of pmap_unmapdev(). o Have ia64_pib hold the uncached virtual address of the processor interrupt block throughout the kernel's life and access the elements of the PIB through this structure pointer. This is a non-functional change with the exception of using ia64_ld1() and ia64_st8() to write to the PIB. We were still using assignments, for which the compiler generates semaphore reads -- which cause undefined behaviour for uncacheable memory. Note also that the memory barriers in ipi_send() are critical for proper functioning. With all the mapping of uncached memory done by pmap_mapdev(), we can keep track of the translations and wire them in the CPU. This then eliminates the need to reserve a whole region for uncached I/O and it eliminates translation traps for device I/O accesses.
2010-02-14 16:56:24 +00:00
extern uint64_t ia64_lapic_addr;
extern long Maxmem;
Bump MAX_BPAGES from 256 to 1024. It seems that a few drivers, bge(4) in particular, do not handle deferred DMA map load operations at all. Any error, and especially EINPROGRESS, is treated as a hard error and typically abort the current operation. The fact that the busdma code queues the load operation for when resources (i.e. bounce buffers in this particular case) are available makes this especially problematic. Bounce buffering, unlike what the PR synopsis would suggest, works fine. While on the subject, properly implement swi_vm(). PR: 147502 MFC after: 1 week
2010-06-11 03:00:32 +00:00
extern u_int busdma_swi_pending;
Some code churn: o Eliminate IA64_PHYS_TO_RR6 and change all places where the macro is used by calling either bus_space_map() or pmap_mapdev(). o Implement bus_space_map() in terms of pmap_mapdev() and implement bus_space_unmap() in terms of pmap_unmapdev(). o Have ia64_pib hold the uncached virtual address of the processor interrupt block throughout the kernel's life and access the elements of the PIB through this structure pointer. This is a non-functional change with the exception of using ia64_ld1() and ia64_st8() to write to the PIB. We were still using assignments, for which the compiler generates semaphore reads -- which cause undefined behaviour for uncacheable memory. Note also that the memory barriers in ipi_send() are critical for proper functioning. With all the mapping of uncached memory done by pmap_mapdev(), we can keep track of the translations and wire them in the CPU. This then eliminates the need to reserve a whole region for uncached I/O and it eliminates translation traps for device I/O accesses.
2010-02-14 16:56:24 +00:00
Add acpi_find_table() -- a convenience function for looking up an ACPI table given the signature.
2010-07-07 20:07:33 +00:00
void *acpi_find_table(const char *sig);
Remove __P. Reviewd by: peter
2002-03-20 23:30:31 +00:00
void busdma_swi(void);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
int copyout_regstack(struct thread *, uint64_t *, uint64_t *);
void cpu_mp_add(u_int, u_int, u_int);
int do_ast(struct trapframe *);
Move the IA-32 trap handling from trap() to ia32_trap(). Move the ia32_syscall() function along with it to ia32_trap.c. When COMPAT_IA32 is not defined, we'll raise SIGEMT instead.
2004-09-25 04:27:44 +00:00
void ia32_trap(int, struct trapframe *);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
int ia64_count_cpus(void);
Partial support for branch long emulation. This only emulates the branch long jump and not the branch long call. Support for that is forthcoming.
2006-06-29 19:59:18 +00:00
int ia64_emulate(struct trapframe *, struct thread *);
Enhance ia64_flush_dirty() to handle the case in which td != curthread. This case is triggered with ptrace(2) and the PT_SETREGS function. Change the return type of the function to int so that errors can be passed on to the caller. Approved by: re (scottl)
2005-07-05 17:12:18 +00:00
int ia64_flush_dirty(struct thread *, struct _special *);
Don't obtain the HCDP address directly from the bootinfo structure. Use a function to keep the details at arms length from uart(4).
2004-12-08 05:46:54 +00:00
uint64_t ia64_get_hcdp(void);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
int ia64_highfp_drop(struct thread *);
Reimplement the lazy FP context switching: o Move all code into a single file for easier maintenance. o Use a single global lock to avoid having to handle either multiple locks or race conditions. o Make sure to disable the high FP registers after saving or dropping them. o use msleep() to wait for the other CPU to save the high FP registers. This change fixes the high FP inconsistency panics. A single global lock typically serializes too much, which may be noticable when a lot of threads use the high FP registers, but in that case it's probably better to switch the high FP context synchronuously. Put differently: cpu_switch() should switch the high FP registers if the incoming and outgoing threads both use the high FP registers.
2009-10-31 22:27:31 +00:00
int ia64_highfp_enable(struct thread *, struct trapframe *);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
int ia64_highfp_save(struct thread *);
Reimplement the lazy FP context switching: o Move all code into a single file for easier maintenance. o Use a single global lock to avoid having to handle either multiple locks or race conditions. o Make sure to disable the high FP registers after saving or dropping them. o use msleep() to wait for the other CPU to save the high FP registers. This change fixes the high FP inconsistency panics. A single global lock typically serializes too much, which may be noticable when a lot of threads use the high FP registers, but in that case it's probably better to switch the high FP context synchronuously. Put differently: cpu_switch() should switch the high FP registers if the incoming and outgoing threads both use the high FP registers.
2009-10-31 22:27:31 +00:00
int ia64_highfp_save_ipi(void);
Allocate a stack for thread0 and switch to it before calling mi_startup(). This frees up kstack for static PAL/SAL calls and double-fault handling.
2008-02-04 02:21:33 +00:00
struct ia64_init_return ia64_init(void);
Export the bus, cpu and itc frequencies under the hw.freq sysctl node. The frequencies are in MHz (i.e. a value of 1000 represents 1GHz). The frequencies are rounded to the nearest whole MHz. While here, rename and re-type bus_frequency, processor_frequency and itc_frequency to bus_freq, cpu_freq and itc_freq and make them static. As unsigned integers, the hw.freq.cpu sysctl can more easily be made generic (across all architectures) making porting easier. MFC after: 3 days
2009-12-23 04:48:42 +00:00
u_int ia64_itc_freq(void);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
void ia64_probe_sapics(void);
Rename ia64_invalidate_icache() to ia64_sync_icache(). We're not invalidating anything.
2009-05-18 18:44:54 +00:00
void ia64_sync_icache(vm_offset_t, vm_size_t);
Keep interrupts disabled while handling external interrupts. There's no advantage in allowing nested external interrupts. In fact, it leads to a potential stack overrun. While here, put the interrupt vector in the trapframe, so as to compensate for the 36 cycle latency of reading cr.ivr. Further simplify assembly code by dealing with ASTs from C. Approved by: re (blanket)
2007-08-06 05:11:01 +00:00
void interrupt(struct trapframe *);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
void map_gateway_page(void);
void map_pal_code(void);
Explicitly map the VHPT on all processors. Previously we were merely lucky that the VHPT was mapped as a side-effect of mapping the kernel, but when there's enough physical memory, this may not at all be the case. Approved by: re (blanket)
2007-07-30 22:12:53 +00:00
void map_vhpt(uintptr_t);
o Move definition of struct ia64_fdesc here to remove duplication. o Add prototype of os_boot_rendez.
2002-05-05 08:14:32 +00:00
void os_boot_rendez(void);
void os_mca(void);
Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to cpu.h. This affects db_command.c and kern_shutdown.c. ia64: move all MD prototypes from cpu.h to md_var.h. This affects madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory(). It's not used (vm_machdep.c). alpha: the MD prototypes have been left in cpu.h with a comment that they should be there. Moving them is left for later. It was expected that the impact would be significant enough to be done in a seperate commit. powerpc: MD prototypes left in cpu.h. Comment added. Suggested by: bde Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
int syscall(struct trapframe *);
void trap(int, struct trapframe *);
Move the IA-32 trap handling from trap() to ia32_trap(). Move the ia32_syscall() function along with it to ia32_trap.c. When COMPAT_IA32 is not defined, we'll raise SIGEMT instead.
2004-09-25 04:27:44 +00:00
void trap_panic(int, struct trapframe *);
Add prototypes for spillfd() and unaligned_fixup().
2003-10-23 06:20:38 +00:00
int unaligned_fixup(struct trapframe *, struct thread *);
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
Update for the KDB framework: o ksym_start and ksym_end changed type to vm_offset_t. o Make debugging support conditional upon KDB instead of DDB. o Call kdb_enter() instead of breakpoint(). o Remove implementation of Debugger(). o Call kdb_trap() according to the new world order. unwinder: o s/db_active/kdb_active/g o Various s/ddb/kdb/g o Add support for unwinding from the PCB as well as the trapframe. Abuse a spare field in the special register set to flag whether the PCB was actually constructed from a trapframe so that we can make the necessary adjustments. md_var.h: o Add RSE convenience macros. o Add ia64_bsp_adjust() to add or subtract from BSP while taking NaT collections into account.
2004-07-10 22:59:30 +00:00
#endif /* _KERNEL */
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
#endif /* !_MACHINE_MD_VAR_H_ */
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