Age | Commit message (Collapse) | Author |
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The main impact of the direct physical mapping on the kmem module is the
slab size computation. The page allocator requires the allocation size
to be a power-of-two above the page size since it uses the buddy memory
allocation algorithm.
Custom slab allocation functions are no longer needed since the only
user was the kentry area, which has been removed recently.
The KMEM_CACHE_NOCPUPOOL flag is also no longer needed since CPU pools,
which are allocated from a kmem cache, can now always be allocated out
of the direct physical mapping.
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Linux does this to be extra careful with some BIOSes which apparently
spuriously write between 4k and 64k.
* i386/i386at/model_dep.c (RESERVED_BIOS): New macro.
(avail_next, mem_size_init, init_alloc_aligned): Use RESERVED_BIOS instead
of hardcoded 0x1000.
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* i386/i386at/kd.c (kdstart): Moved escape sequence handling to new
kd_putc_esc function.
(kd_putc_esc): New function with logic from kdstart.
(kdcnputc): Call kd_putc_esc rather than kd_putc to allow for ANSI
escape codes.
* i386/i386at/kd.h (kd_putc_esc): New function.
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* i386/intel/pmap.c (pmap_page_protect): Enable assertions.
(phys_attribute_clear, phys_attribute_test): Likewise.
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* i386/intel/pmap.c (pmap_page_protect): Fix function name in panic
message.
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* i386/intel/pmap.c: Fix typo.
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* i386/i386at/immc.c (immc_cnputc): Fix line wrapping.
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Improve the immediate console to the point that it can be enabled and
display e.g. assertion failures from very early on (i.e. from
`c_boot_entry').
* device/cons.h (romgetc, romputc): New declarations.
* i386/configfrag.ac: Add configuration variable.
* i386/i386at/conf.c (dev_name_list): Add entry.
* i386/i386at/cons_conf.c (constab): Add entry.
* i386/i386at/immc.c: Add missing includes.
(immc_cnprobe, immc_cninit, immc_cngetc, immc_romputc): New functions.
(immc_cnputc): Fix signature, use virtual addresses.
* i386/i386at/immc.h: New file.
* i386/i386at/kd.c: Use `#if ENABLE_IMMEDIATE_CONSOLE'.
* i386/i386at/kd.h (kd_setpos): Add missing declaration.
* i386/i386at/model_dep.c (c_boot_entry): Install immediate console as
early boot console.
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* i386/i386at/model_dep.c (rebootflag): Explain flag.
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* i386/i386/pcb.c (switch_ktss): Cleanly convert the value.
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Import the macro definitions from the x15 kernel project, and replace
all similar definitions littered all over the place with it.
Importing this file will make importing code from the x15 kernel
easier. We are already using the red-black tree implementation and
the slab allocator from it, and we will import even more code in the
near future.
* kern/list.h: Do not define `structof', include `macros.h' instead.
* kern/rbtree.h: Likewise.
* kern/slab.c: Do not define `ARRAY_SIZE', include `macros.h' instead.
* i386/grub/misc.h: Likewise.
* i386/i386/xen.h: Do not define `barrier', include `macros.h' instead.
* kern/macro_help.h: Delete file. Replaced by `macros.h'.
* kern/macros.h: New file.
* Makefrag.am (libkernel_a_SOURCES): Add new file, remove old file.
* device/dev_master.h: Adopt accordingly.
* device/io_req.h: Likewise.
* device/net_io.h: Likewise.
* i386/intel/read_fault.c: Likewise.
* ipc/ipc_kmsg.h: Likewise.
* ipc/ipc_mqueue.h: Likewise.
* ipc/ipc_object.h: Likewise.
* ipc/ipc_port.h: Likewise.
* ipc/ipc_space.h: Likewise.
* ipc/ipc_splay.c: Likewise.
* ipc/ipc_splay.h: Likewise.
* kern/assert.h: Likewise.
* kern/ast.h: Likewise.
* kern/pc_sample.h: Likewise.
* kern/refcount.h: Likewise.
* kern/sched.h: Likewise.
* kern/sched_prim.c: Likewise.
* kern/timer.c: Likewise.
* kern/timer.h: Likewise.
* vm/vm_fault.c: Likewise.
* vm/vm_map.h: Likewise.
* vm/vm_object.h: Likewise.
* vm/vm_page.h: Likewise.
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* i386/i386/phys.c (pmap_zero_page, pmap_copy_page, copy_to_phys,
copy_from_phys): Avoid compiler warning about `map' being used
uninitialized.
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* i386/i386/pcb.c (stack_attach): Use `USER_REGS'.
(stack_handoff): Likewise.
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* i386/i386at/rtc.c (rtcget, rtcput): Make functions take an rtc_st
structure which it casts to char * itself.
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* i386/i386/db_trace.c (db_i386_stack_trace): Prepend 0x to hexadecimal offset.
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xen cli/sti doesn't use IF
* i386/i386/spl.S [MACH_XEN]: Disable IF check.
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* i386/i386at/kd_event.c: Call printf_once instead of recoding it.
* i386/i386at/kd_mouse.c: Likewise.
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* i386/i386at/kd_event.c (kbd_enqueue): Print "queue full" warning only
once.
* i386/i386at/kd_mouse.c (mouse_enqueue): Likewise.
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Previously, `copyinmsg' was the same function as `copyin'. The former
is for messages, and the size of messages is a multiple of four.
Likewise for `copyoutmsg'.
Provide a specialized version of both functions. This shaves off a
couple of instructions and improves our IPC performance.
* i386/i386/locore.S (copyinmsg): New function.
(copyoutmsg): New function.
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* i386/i386/locore.S (copyout): Do not needlessly copy length to %eax
first.
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Signed-off-by: Stefan Weil <sw@weilnetz.de>
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* i386/i386/trap.c (kernel_trap): When current_thread is null, assume that
we are in kernel land.
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* i386/i386/spl.S (spl7): Just set curr_ipl and cli.
(splx) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared.
(splx): When staying at ipl7, do not enable interrupts.
(spl) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared.
(spl): When new ipl is 7, branch to spl7.
* i386/i386/locore.S (TIME_TRAP_UENTRY, TIME_TRAP_SENTRY): Save flags, and
restore them instead of blindly using sti.
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* i386/i386/db_interface.c (zero_dr): New variable
(db_load_context): Do not set debug registers to zero when they are already
zero.
(db_dr): When kernel debug registers get zero, record that the debug
registers have been zeroed.
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* ddb/db_elf.c: New file.
* ddb/db_elf.h: Likewise.
* Makefrag.am (libkernel_a_SOURCES): Add db_elf.{c,h}.
* ddb/db_sym.c (dummy_db_sym_init): New stub db_sym_init function.
(db_sym_switch): Add ELF functions.
* ddb/db_sym.h (SYMTAB_ELF): New macro.
(elf_db_sym_init): New declaration.
* i386/i386at/model_dep.c (c_boot_entry): Get ELF section header
information from the multiboot structure, and call elf_db_sym_init.
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* i386/i386/trap.c (user_trap): On T_DEBUG, record the content of dr6 in
PCB, and clear it.
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* i386/i386at/com.c (comintr): Fix computation of '@'.
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* i386/i386at/com.c (comintr): Use 'A'-1 instead of '@'.
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* i386/i386at/com.c (comintr): Invoke the debugger if ctrl-alt-d is
pressed.
* i386/i386at/com.h (kdb_kintr): Add declaration.
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* i386/i386at/acpi.c (grub_machine_acpi_get_rsdpv2): Drop debugging
prints.
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Since we need it to access some BIOS information, e.g. at ACPI shutdown. When
the kernel VM is not starting at 0, there is already nothing mapped there in
user tasks, anyway.
* i386/i386at/model_dep.c (machine_init) [VM_MIN_KERNEL_ADDRESS != 0]:
Do not call pmap_unmap_page_zero.
* i386/intel/pmap.c (pmap_unmap_page_zero): Warn that unmapping page
zero may break some BIOS functions.
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This is a mostly verbatim copy of acpihalt.c from GRUB2 with a little
bit of glue code.
* i386/Makefrag.am (libkernel_a_SOURCES): Add the new files.
* i386/grub/acpi.h: Verbatim copy from GRUB2.
* i386/grub/compiler.h: Likewise.
* i386/grub/cpu/io.h: Likewise.
* i386/grub/cpu/time.h: Likewise.
* i386/grub/cpu/types.h: Likewise.
* i386/grub/err.h: Likewise.
* i386/grub/misc.h: Likewise.
* i386/grub/mm.h: Likewise.
* i386/grub/symbol.h: Likewise.
* i386/grub/time.h: Likewise.
* i386/grub/types.h: Likewise.
* i386/i386at/acpi.c: Likewise.
* i386/i386at/acpihalt.c: Likewise.
(grub_acpi_halt): Map physical addresses.
* i386/i386at/acpihalt.h: New file.
* i386/grub/glue.h: Some glue macros.
* i386/grub/i18n.h: Stub out i18n.
* i386/i386at/grub_glue.c: Some glue code.
* i386/i386at/model_dep.c (halt_all_cpus): Use grub_acpi_halt.
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io_map_cached is like io_map, but reuses the old mapping if it is
applicable.
* i386/i386/io_map.c: Add io_map_cached.
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As a convenience for the nice people using our debugger, remap some
keys to the readline-like shortcuts supported by dde.
* i386/i386at/kd.c (kdcnmaygetc): Remap some keys.
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* i386/i386at/kd.c (key_map): Remove superfluous newlines so that
every entry fits into one line. This way line numbers can be used as
an index into the map.
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* ddb/db_print.c (db_print_task): Print task name if available.
* i386/i386/db_interface.c (db_task_name): Likewise.
* i386/i386/db_machdep.h (DB_GNUMACH_TASK_NAME): Remove unused definition.
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* i386/i386/xen.h (mb, rmb, wmb): Add memory clobber.
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* i386/include/mach/i386/cthreads.h: Rewrite old-style #endif FOO
directives.
* include/device/tape_status.h: Likewise.
* include/mach/alert.h: Likewise.
* include/mach/boot.h: Likewise.
* include/mach/default_pager_types.defs: Likewise.
* include/mach/default_pager_types.h: Likewise.
* include/mach/multiboot.h: Likewise.
* include/mach/notify.defs: Likewise.
* include/mach_debug/pc_info.h: Likewise.
* kern/act.h: Likewise.
* kern/refcount.h: Likewise.
* kern/shuttle.h: Likewise.
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* ddb/db_command.c (db_command_table): Add "halt" command.
* i386/i386/db_interface.h (db_halt_cpu): New declaration.
* i386/i386at/model_dep.c (db_halt_cpu): New function.
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Commit b6dab094 introduced a way to include the MIG-generated server
files for the machine specific interface in ipc_kobject.c.
This broke out-of-tree builds. Here, 'machine' is a symlink to
'../i386/i386', it points into the source tree. The MIG-generated
files however are put in the build tree in i386/i386.
* i386/i386/machine_routines.h (MACHINE_SERVER_HEADER): Fix path.
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GNU MIG recently gained support for emitting x_server_routine
declarations in the generated server header file. Using this
declaration, the x_server_routine functions can be inlined into the
ipc_kobject_server function.
* kern/ipc_kobject.c: Include the MIG-generated server headers for the
machine-dependent interfaces.
(ipc_kobject_server): Drop the simple declaration of
MACHINE_SERVER_ROUTINE.
* i386/i386/machine_routines.h (MACHINE_SERVER_HEADER): New
definition.
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Convert from K&R style function definitions to ANSI style
function definitions.
* ddb/db_access.c: Convert function prototypes from K&R to ANSI.
* ddb/db_aout.c: Likewise.
* ddb/db_break.c: Likewise.
* ddb/db_command.c: Likewise.
* ddb/db_cond.c: Likewise.
* ddb/db_examine.c: Likewise.
* ddb/db_expr.c: Likewise.
* ddb/db_ext_symtab.c: Likewise.
* ddb/db_input.c: Likewise.
* ddb/db_lex.c: Likewise.
* ddb/db_macro.c: Likewise.
* ddb/db_mp.c: Likewise.
* ddb/db_output.c: Likewise.
* ddb/db_print.c: Likewise.
* ddb/db_run.c: Likewise.
* ddb/db_sym.c: Likewise.
* ddb/db_task_thread.c: Likewise.
* ddb/db_trap.c: Likewise.
* ddb/db_variables.c: Likewise.
* ddb/db_watch.c: Likewise.
* device/blkio.c: Likewise.
* device/chario.c: Likewise.
* device/dev_lookup.c: Likewise.
* device/dev_name.c: Likewise.
* device/dev_pager.c: Likewise.
* device/ds_routines.c: Likewise.
* device/net_io.c: Likewise.
* device/subrs.c: Likewise.
* i386/i386/db_interface.c: Likewise.
* i386/i386/fpu.c: Likewise.
* i386/i386/io_map.c: Likewise.
* i386/i386/loose_ends.c: Likewise.
* i386/i386/mp_desc.c: Likewise.
* i386/i386/pcb.c: Likewise.
* i386/i386/phys.c: Likewise.
* i386/i386/trap.c: Likewise.
* i386/i386/user_ldt.c: Likewise.
* i386/i386at/com.c: Likewise.
* i386/i386at/kd.c: Likewise.
* i386/i386at/kd_event.c: Likewise.
* i386/i386at/kd_mouse.c: Likewise.
* i386/i386at/kd_queue.c: Likewise.
* i386/i386at/lpr.c: Likewise.
* i386/i386at/model_dep.c: Likewise.
* i386/i386at/rtc.c: Likewise.
* i386/intel/pmap.c: Likewise.
* i386/intel/read_fault.c: Likewise.
* ipc/ipc_entry.c: Likewise.
* ipc/ipc_hash.c: Likewise.
* ipc/ipc_kmsg.c: Likewise.
* ipc/ipc_marequest.c: Likewise.
* ipc/ipc_mqueue.c: Likewise.
* ipc/ipc_notify.c: Likewise.
* ipc/ipc_port.c: Likewise.
* ipc/ipc_right.c: Likewise.
* ipc/mach_debug.c: Likewise.
* ipc/mach_msg.c: Likewise.
* ipc/mach_port.c: Likewise.
* ipc/mach_rpc.c: Likewise.
* kern/act.c: Likewise.
* kern/exception.c: Likewise.
* kern/ipc_mig.c: Likewise.
* kern/ipc_tt.c: Likewise.
* kern/lock_mon.c: Likewise.
* kern/mach_clock.c: Likewise.
* kern/machine.c: Likewise.
* kern/printf.c: Likewise.
* kern/priority.c: Likewise.
* kern/startup.c: Likewise.
* kern/syscall_emulation.c: Likewise.
* kern/syscall_subr.c: Likewise.
* kern/thread_swap.c: Likewise.
* kern/time_stamp.c: Likewise.
* kern/timer.c: Likewise.
* kern/xpr.c: Likewise.
* vm/memory_object.c: Likewise.
* vm/vm_debug.c: Likewise.
* vm/vm_external.c: Likewise.
* vm/vm_fault.c: Likewise.
* vm/vm_kern.c: Likewise.
* vm/vm_map.c: Likewise.
* vm/vm_pageout.c: Likewise.
* vm/vm_user.c: Likewise.
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* device/conf.h: Include <sys/types.h>, <mach/port.h>, <mach/vm_prot.h>.
Predefine struct io_req, io_req_t and io_return_t.
(dev_ops): Add explicit prototypes for d_open, d_close, d_read, d_write,
d_getstat, d_setstat, d_mmap, d_port_death.
(nulldev_open, nulldev_close, nulldev_read, nulldev_write,
nulldev_getstat, nulldev_setstat, nulldev_portdeath): Add prototypes.
(nomap): Fix prototype.
* device/dev_name.c (nulldev_open, nulldev_close, nulldev_read,
nulldev_write, nulldev_getstat, nulldev_setstat, nulldev_portdeath): New
functions.
(nomap): Fix prototype.
* device/ds_routines.c (dev_close): Pass 0 as flag parameter.
* device/kmsg.c (kmsgclose): Drop return value.
* device/kmsg.h (kmsgclose): Fix prototype.
* i386/i386at/com.c (comopen): Fix prototype.
(comclose): Fix prototype, drop return value.
(comread, comwrite): Fix prototype.
* i386/i386at/com.h (comopen, comclose, comread, comwrite): Fix
prototype.
* i386/i386at/conf.c (dev_ops): Use nulldev_open, nulldev_close,
nulldev_read, nulldev_write, nulldev_getstat, nulldev_setstat,
nulldev_portdeath where appropriate.
* i386/i386at/kd.c (kdclose, kdread, kdwrite, kdmmap): Fix prototype.
* i386/i386at/kd.h (kdclose, kdread, kdwrite, kdmmap): Likewise.
* i386/i386at/kd_event.c (kbdopen): Likewise.
* i386/i386at/kd_event.h (kbdopen): Likewise.
* i386/i386at/kd_mouse.c (mouseopen): Likewise.
* i386/i386at/kd_mouse.h (mouseopen): Likewise.
* i386/i386at/lpr.c (lpropen, lprclose, lprread, lprwrite): Likewise.
* i386/i386at/lpr.h (lpropen, lprclose, lprread, lprwrite): Likewise.
* i386/i386at/mem.c (memmmap): Likewise.
* i386/i386at/mem.h (memmmap): Likewise.
* i386/i386at/model_dep.c (timemmap): Likewise.
* i386/i386at/model_dep.h (timemmap): Likewise.
* kern/mach_clock.c (timeopen, timeclose): Likewise.
* kern/mach_clock.h: Include <sys/types.h>, predefine struct io_req and
io_req_t.
(timeopen, timeclose): Fix prototype.
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CGA and MONO cards are more than hard to find nowadays, and some buggy BIOSes
claim running them nowadays...
* i386/i386at/kd.c (kd_xga_init): Do not handle CGA and MONO cases any
more, which thus default to EGA/VGA.
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* i386/i386at/kd.c (kd_xga_init): Use CM_EGA_VGA behavior as default
case for unknown values of CMOS data.
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We were filling much more than the mapwindows array, thus overwriting in
at least debugger variables.
* i386/intel/pmap.c (pmap_bootstrap): Make sure to limit mapwindows
initialization within PMAP_NMAPWINDOWS.
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