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0dc243ae10
This patch creates a new interface for IOMMUs by adding a centralized location for IOMMU allocation (for translation tables/apertures) and IOMMU initialization. In creating these, code was moved around for abstraction, uniformity, and consiceness. Take note of the move of the iommu_setup bootarg parsing code to __setup. This is enabled by moving back the location of the aperture allocation/detection to mem init (which while ugly, was already the location of the swiotlb_init). While a slight departure from the previous patch, I belive this provides the true intention of the previous versions of the patch which changed this code. It also makes the addition of the upcoming calgary code much cleaner than previous patches. [AK: Removed one broken change. iommu_setup still has to be called early] Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
#ifndef _ASM_X8664_PROTO_H
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#define _ASM_X8664_PROTO_H 1
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#include <asm/ldt.h>
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/* misc architecture specific prototypes */
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struct cpuinfo_x86;
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struct pt_regs;
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extern void start_kernel(void);
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extern void pda_init(int);
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extern void zap_low_mappings(int cpu);
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extern void early_idt_handler(void);
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extern void mcheck_init(struct cpuinfo_x86 *c);
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#ifdef CONFIG_MTRR
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extern void mtrr_ap_init(void);
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extern void mtrr_bp_init(void);
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#else
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#define mtrr_ap_init() do {} while (0)
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#define mtrr_bp_init() do {} while (0)
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#endif
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extern void init_memory_mapping(unsigned long start, unsigned long end);
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extern void size_zones(unsigned long *z, unsigned long *h,
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unsigned long start_pfn, unsigned long end_pfn);
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extern void system_call(void);
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extern int kernel_syscall(void);
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extern void syscall_init(void);
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extern void ia32_syscall(void);
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extern void ia32_cstar_target(void);
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extern void ia32_sysenter_target(void);
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extern void config_acpi_tables(void);
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extern void ia32_syscall(void);
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extern int pmtimer_mark_offset(void);
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extern void pmtimer_resume(void);
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extern void pmtimer_wait(unsigned);
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extern unsigned int do_gettimeoffset_pm(void);
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#ifdef CONFIG_X86_PM_TIMER
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extern u32 pmtmr_ioport;
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#else
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#define pmtmr_ioport 0
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#endif
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extern unsigned long long monotonic_base;
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extern int sysctl_vsyscall;
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extern int nohpet;
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extern unsigned long vxtime_hz;
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extern int numa_setup(char *opt);
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extern int setup_early_printk(char *);
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extern void early_printk(const char *fmt, ...) __attribute__((format(printf,1,2)));
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extern void early_identify_cpu(struct cpuinfo_x86 *c);
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extern int k8_scan_nodes(unsigned long start, unsigned long end);
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extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
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extern unsigned long numa_free_all_bootmem(void);
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extern void reserve_bootmem_generic(unsigned long phys, unsigned len);
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extern void free_bootmem_generic(unsigned long phys, unsigned len);
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extern void load_gs_index(unsigned gs);
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extern void stop_timer_interrupt(void);
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extern void main_timer_handler(struct pt_regs *regs);
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extern unsigned long end_pfn_map;
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extern void show_trace(struct task_struct *, struct pt_regs *, unsigned long * rsp);
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extern void show_registers(struct pt_regs *regs);
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extern void exception_table_check(void);
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extern void acpi_reserve_bootmem(void);
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extern void swap_low_mappings(void);
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extern void __show_regs(struct pt_regs * regs);
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extern void show_regs(struct pt_regs * regs);
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extern char *syscall32_page;
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extern void syscall32_cpu_init(void);
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extern void setup_node_bootmem(int nodeid, unsigned long start, unsigned long end);
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extern void check_ioapic(void);
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extern void check_efer(void);
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extern int unhandled_signal(struct task_struct *tsk, int sig);
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extern int unsynchronized_tsc(void);
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extern void select_idle_routine(const struct cpuinfo_x86 *c);
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extern unsigned long table_start, table_end;
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extern int exception_trace;
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extern int using_apic_timer;
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extern int disable_apic;
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extern unsigned cpu_khz;
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extern int ioapic_force;
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extern int skip_ioapic_setup;
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extern int acpi_ht;
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extern int acpi_disabled;
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extern void no_iommu_init(void);
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extern int force_iommu, no_iommu;
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extern int iommu_detected;
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#ifdef CONFIG_IOMMU
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extern void gart_iommu_init(void);
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extern void gart_parse_options(char *);
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extern void iommu_hole_init(void);
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extern int fallback_aper_order;
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extern int fallback_aper_force;
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extern int iommu_aperture;
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extern int iommu_aperture_allowed;
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extern int iommu_aperture_disabled;
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extern int fix_aperture;
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#else
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#define iommu_aperture 0
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#define iommu_aperture_allowed 0
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#endif
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extern int reboot_force;
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extern int notsc_setup(char *);
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extern int setup_additional_cpus(char *);
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extern void smp_local_timer_interrupt(struct pt_regs * regs);
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long do_arch_prctl(struct task_struct *task, int code, unsigned long addr);
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#define round_up(x,y) (((x) + (y) - 1) & ~((y)-1))
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#define round_down(x,y) ((x) & ~((y)-1))
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#endif
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