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android_kernel_xiaomi_sm8350/arch/sparc64/kernel/sparc64_ksyms.c
David S. Miller 4f0234f4f9 [SPARC64]: Initial LDOM cpu hotplug support. 
Only adding cpus is supports at the moment, removal
will come next.

When new cpus are configured, the machine description is
updated.  When we get the configure request we pass in a
cpu mask of to-be-added cpus to the mdesc CPU node parser
so it only fetches information for those cpus.  That code
also proceeds to update the SMT/multi-core scheduling bitmaps.

cpu_up() does all the work and we return the status back
over the DS channel.

CPUs via dr-cpu need to be booted straight out of the
hypervisor, and this requires:

1) A new trampoline mechanism.  CPUs are booted straight
   out of the hypervisor with MMU disabled and running in
   physical addresses with no mappings installed in the TLB.

   The new hvtramp.S code sets up the critical cpu state,
   installs the locked TLB mappings for the kernel, and
   turns the MMU on.  It then proceeds to follow the logic
   of the existing trampoline.S SMP cpu bringup code.

2) All calls into OBP have to be disallowed when domaining
   is enabled.  Since cpus boot straight into the kernel from
   the hypervisor, OBP has no state about that cpu and therefore
   cannot handle being invoked on that cpu.

   Luckily it's only a handful of interfaces which can be called
   after the OBP device tree is obtained.  For example, rebooting,
   halting, powering-off, and setting options node variables.

CPU removal support will require some infrastructure changes
here.  Namely we'll have to process the requests via a true
kernel thread instead of in a workqueue.  workqueues run on
a per-cpu thread, but when unconfiguring we might need to
force the thread to execute on another cpu if the current cpu
is the one being removed.  Removal of a cpu also causes the kernel
to destroy that cpu's workqueue running thread.

Another issue on removal is that we may have interrupts still
pointing to the cpu-to-be-removed.  So new code will be needed
to walk the active INO list and retarget those cpus as-needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:40 -07:00

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/* $Id: sparc64_ksyms.c,v 1.121 2002/02/09 19:49:31 davem Exp $
* arch/sparc64/kernel/sparc64_ksyms.c: Sparc64 specific ksyms support.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
*/
/* Tell string.h we don't want memcpy etc. as cpp defines */
#define EXPORT_SYMTAB_STROPS
#define PROMLIB_INTERNAL
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/in6.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/fs_struct.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/socket.h>
#include <linux/syscalls.h>
#include <linux/percpu.h>
#include <linux/init.h>
#include <linux/rwsem.h>
#include <net/compat.h>
#include <asm/oplib.h>
#include <asm/delay.h>
#include <asm/system.h>
#include <asm/auxio.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/idprom.h>
#include <asm/svr4.h>
#include <asm/elf.h>
#include <asm/head.h>
#include <asm/smp.h>
#include <asm/mostek.h>
#include <asm/ptrace.h>
#include <asm/user.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
#include <asm/fpumacro.h>
#include <asm/pgalloc.h>
#include <asm/cacheflush.h>
#ifdef CONFIG_SBUS
#include <asm/sbus.h>
#include <asm/dma.h>
#endif
#ifdef CONFIG_PCI
#include <asm/ebus.h>
#include <asm/isa.h>
#endif
#include <asm/a.out.h>
#include <asm/ns87303.h>
#include <asm/timer.h>
#include <asm/cpudata.h>
struct poll {
int fd;
short events;
short revents;
};
extern void die_if_kernel(char *str, struct pt_regs *regs);
extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
extern void *__bzero(void *, size_t);
extern void *__memscan_zero(void *, size_t);
extern void *__memscan_generic(void *, int, size_t);
extern int __memcmp(const void *, const void *, __kernel_size_t);
extern __kernel_size_t strlen(const char *);
extern void linux_sparc_syscall(void);
extern void rtrap(void);
extern void show_regs(struct pt_regs *);
extern void solaris_syscall(void);
extern void syscall_trace(struct pt_regs *, int);
extern u32 sunos_sys_table[], sys_call_table32[];
extern void tl0_solaris(void);
extern void sys_sigsuspend(void);
extern int svr4_getcontext(svr4_ucontext_t *uc, struct pt_regs *regs);
extern int svr4_setcontext(svr4_ucontext_t *uc, struct pt_regs *regs);
extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
extern int (*handle_mathemu)(struct pt_regs *, struct fpustate *);
extern long sparc32_open(const char __user * filename, int flags, int mode);
extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
unsigned long pfn, unsigned long size, pgprot_t prot);
extern void (*prom_palette)(int);
extern int __ashrdi3(int, int);
extern int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs);
extern unsigned int sys_call_table[];
extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
unsigned long *);
extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *);
extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *, unsigned long *);
extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
unsigned long *);
extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *);
extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *, unsigned long *);
/* Per-CPU information table */
EXPORT_PER_CPU_SYMBOL(__cpu_data);
/* used by various drivers */
#ifdef CONFIG_SMP
/* Out of line rw-locking implementation. */
EXPORT_SYMBOL(__read_lock);
EXPORT_SYMBOL(__read_unlock);
EXPORT_SYMBOL(__write_lock);
EXPORT_SYMBOL(__write_unlock);
EXPORT_SYMBOL(__write_trylock);
EXPORT_SYMBOL(smp_call_function);
#endif /* CONFIG_SMP */
#if defined(CONFIG_MCOUNT)
extern void _mcount(void);
EXPORT_SYMBOL(_mcount);
#endif
EXPORT_SYMBOL(sparc64_get_clock_tick);
/* semaphores */
EXPORT_SYMBOL(down);
EXPORT_SYMBOL(down_trylock);
EXPORT_SYMBOL(down_interruptible);
EXPORT_SYMBOL(up);
/* RW semaphores */
EXPORT_SYMBOL(__down_read);
EXPORT_SYMBOL(__down_read_trylock);
EXPORT_SYMBOL(__down_write);
EXPORT_SYMBOL(__down_write_trylock);
EXPORT_SYMBOL(__up_read);
EXPORT_SYMBOL(__up_write);
EXPORT_SYMBOL(__downgrade_write);
/* Atomic counter implementation. */
EXPORT_SYMBOL(atomic_add);
EXPORT_SYMBOL(atomic_add_ret);
EXPORT_SYMBOL(atomic_sub);
EXPORT_SYMBOL(atomic_sub_ret);
EXPORT_SYMBOL(atomic64_add);
EXPORT_SYMBOL(atomic64_add_ret);
EXPORT_SYMBOL(atomic64_sub);
EXPORT_SYMBOL(atomic64_sub_ret);
/* Atomic bit operations. */
EXPORT_SYMBOL(test_and_set_bit);
EXPORT_SYMBOL(test_and_clear_bit);
EXPORT_SYMBOL(test_and_change_bit);
EXPORT_SYMBOL(set_bit);
EXPORT_SYMBOL(clear_bit);
EXPORT_SYMBOL(change_bit);
EXPORT_SYMBOL(__flushw_user);
EXPORT_SYMBOL(tlb_type);
EXPORT_SYMBOL(get_fb_unmapped_area);
EXPORT_SYMBOL(flush_icache_range);
EXPORT_SYMBOL(flush_dcache_page);
#ifdef DCACHE_ALIASING_POSSIBLE
EXPORT_SYMBOL(__flush_dcache_range);
#endif
EXPORT_SYMBOL(mostek_lock);
EXPORT_SYMBOL(mstk48t02_regs);
#ifdef CONFIG_SUN_AUXIO
EXPORT_SYMBOL(auxio_set_led);
EXPORT_SYMBOL(auxio_set_lte);
#endif
#ifdef CONFIG_SBUS
EXPORT_SYMBOL(sbus_root);
EXPORT_SYMBOL(dma_chain);
EXPORT_SYMBOL(sbus_set_sbus64);
EXPORT_SYMBOL(sbus_alloc_consistent);
EXPORT_SYMBOL(sbus_free_consistent);
EXPORT_SYMBOL(sbus_map_single);
EXPORT_SYMBOL(sbus_unmap_single);
EXPORT_SYMBOL(sbus_map_sg);
EXPORT_SYMBOL(sbus_unmap_sg);
EXPORT_SYMBOL(sbus_dma_sync_single_for_cpu);
EXPORT_SYMBOL(sbus_dma_sync_single_for_device);
EXPORT_SYMBOL(sbus_dma_sync_sg_for_cpu);
EXPORT_SYMBOL(sbus_dma_sync_sg_for_device);
#endif
EXPORT_SYMBOL(outsb);
EXPORT_SYMBOL(outsw);
EXPORT_SYMBOL(outsl);
EXPORT_SYMBOL(insb);
EXPORT_SYMBOL(insw);
EXPORT_SYMBOL(insl);
#ifdef CONFIG_PCI
EXPORT_SYMBOL(ebus_chain);
EXPORT_SYMBOL(isa_chain);
EXPORT_SYMBOL(pci_alloc_consistent);
EXPORT_SYMBOL(pci_free_consistent);
EXPORT_SYMBOL(pci_map_single);
EXPORT_SYMBOL(pci_unmap_single);
EXPORT_SYMBOL(pci_map_sg);
EXPORT_SYMBOL(pci_unmap_sg);
EXPORT_SYMBOL(pci_dma_sync_single_for_cpu);
EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu);
EXPORT_SYMBOL(pci_dma_supported);
#endif
/* I/O device mmaping on Sparc64. */
EXPORT_SYMBOL(io_remap_pfn_range);
#ifdef CONFIG_COMPAT
/* Solaris/SunOS binary compatibility */
EXPORT_SYMBOL(verify_compat_iovec);
#endif
EXPORT_SYMBOL(dump_fpu);
EXPORT_SYMBOL(put_fs_struct);
/* math-emu wants this */
EXPORT_SYMBOL(die_if_kernel);
/* Kernel thread creation. */
EXPORT_SYMBOL(kernel_thread);
/* prom symbols */
EXPORT_SYMBOL(idprom);
EXPORT_SYMBOL(prom_root_node);
EXPORT_SYMBOL(prom_getchild);
EXPORT_SYMBOL(prom_getsibling);
EXPORT_SYMBOL(prom_searchsiblings);
EXPORT_SYMBOL(prom_firstprop);
EXPORT_SYMBOL(prom_nextprop);
EXPORT_SYMBOL(prom_getproplen);
EXPORT_SYMBOL(prom_getproperty);
EXPORT_SYMBOL(prom_node_has_property);
EXPORT_SYMBOL(prom_setprop);
EXPORT_SYMBOL(saved_command_line);
EXPORT_SYMBOL(prom_finddevice);
EXPORT_SYMBOL(prom_feval);
EXPORT_SYMBOL(prom_getbool);
EXPORT_SYMBOL(prom_getstring);
EXPORT_SYMBOL(prom_getint);
EXPORT_SYMBOL(prom_getintdefault);
EXPORT_SYMBOL(__prom_getchild);
EXPORT_SYMBOL(__prom_getsibling);
/* sparc library symbols */
EXPORT_SYMBOL(strlen);
EXPORT_SYMBOL(__strlen_user);
EXPORT_SYMBOL(__strnlen_user);
#ifdef CONFIG_SOLARIS_EMUL_MODULE
EXPORT_SYMBOL(linux_sparc_syscall);
EXPORT_SYMBOL(rtrap);
EXPORT_SYMBOL(show_regs);
EXPORT_SYMBOL(solaris_syscall);
EXPORT_SYMBOL(syscall_trace);
EXPORT_SYMBOL(sunos_sys_table);
EXPORT_SYMBOL(sys_call_table32);
EXPORT_SYMBOL(tl0_solaris);
EXPORT_SYMBOL(sys_sigsuspend);
EXPORT_SYMBOL(sys_getppid);
EXPORT_SYMBOL(sys_getpid);
EXPORT_SYMBOL(sys_geteuid);
EXPORT_SYMBOL(sys_getuid);
EXPORT_SYMBOL(sys_getegid);
EXPORT_SYMBOL(sys_getgid);
EXPORT_SYMBOL(svr4_getcontext);
EXPORT_SYMBOL(svr4_setcontext);
EXPORT_SYMBOL(compat_sys_ioctl);
EXPORT_SYMBOL(sparc32_open);
#endif
/* Special internal versions of library functions. */
EXPORT_SYMBOL(_clear_page);
EXPORT_SYMBOL(clear_user_page);
EXPORT_SYMBOL(copy_user_page);
EXPORT_SYMBOL(__bzero);
EXPORT_SYMBOL(__memscan_zero);
EXPORT_SYMBOL(__memscan_generic);
EXPORT_SYMBOL(__memcmp);
EXPORT_SYMBOL(__memset);
EXPORT_SYMBOL(csum_partial);
EXPORT_SYMBOL(csum_partial_copy_nocheck);
EXPORT_SYMBOL(__csum_partial_copy_from_user);
EXPORT_SYMBOL(__csum_partial_copy_to_user);
EXPORT_SYMBOL(ip_fast_csum);
/* Moving data to/from/in userspace. */
EXPORT_SYMBOL(___copy_to_user);
EXPORT_SYMBOL(___copy_from_user);
EXPORT_SYMBOL(___copy_in_user);
EXPORT_SYMBOL(copy_to_user_fixup);
EXPORT_SYMBOL(copy_from_user_fixup);
EXPORT_SYMBOL(copy_in_user_fixup);
EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL(__clear_user);
/* Various address conversion macros use this. */
EXPORT_SYMBOL(sparc64_valid_addr_bitmap);
/* No version information on this, heavily used in inline asm,
* and will always be 'void __ret_efault(void)'.
*/
EXPORT_SYMBOL(__ret_efault);
/* No version information on these, as gcc produces such symbols. */
EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(strncmp);
/* Delay routines. */
EXPORT_SYMBOL(__udelay);
EXPORT_SYMBOL(__ndelay);
EXPORT_SYMBOL(__const_udelay);
EXPORT_SYMBOL(__delay);
void VISenter(void);
/* RAID code needs this */
EXPORT_SYMBOL(VISenter);
/* for input/keybdev */
EXPORT_SYMBOL(sun_do_break);
EXPORT_SYMBOL(serial_console);
EXPORT_SYMBOL(stop_a_enabled);
#ifdef CONFIG_DEBUG_BUGVERBOSE
EXPORT_SYMBOL(do_BUG);
#endif
/* for ns8703 */
EXPORT_SYMBOL(ns87303_lock);
/* for solaris compat module */
EXPORT_SYMBOL_GPL(sys_call_table);
EXPORT_SYMBOL(tick_ops);
EXPORT_SYMBOL(xor_vis_2);
EXPORT_SYMBOL(xor_vis_3);
EXPORT_SYMBOL(xor_vis_4);
EXPORT_SYMBOL(xor_vis_5);
EXPORT_SYMBOL(xor_niagara_2);
EXPORT_SYMBOL(xor_niagara_3);
EXPORT_SYMBOL(xor_niagara_4);
EXPORT_SYMBOL(xor_niagara_5);
EXPORT_SYMBOL(prom_palette);
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