| #ifndef __ALPHA_SYSTEM_H |
| #define __ALPHA_SYSTEM_H |
| |
| #include <asm/pal.h> |
| #include <asm/page.h> |
| #include <asm/barrier.h> |
| |
| /* |
| * System defines.. Note that this is included both from .c and .S |
| * files, so it does only defines, not any C code. |
| */ |
| |
| /* |
| * We leave one page for the initial stack page, and one page for |
| * the initial process structure. Also, the console eats 3 MB for |
| * the initial bootloader (one of which we can reclaim later). |
| */ |
| #define BOOT_PCB 0x20000000 |
| #define BOOT_ADDR 0x20000000 |
| /* Remove when official MILO sources have ELF support: */ |
| #define BOOT_SIZE (16*1024) |
| |
| #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS |
| #define KERNEL_START_PHYS 0x300000 /* Old bootloaders hardcoded this. */ |
| #else |
| #define KERNEL_START_PHYS 0x1000000 /* required: Wildfire/Titan/Marvel */ |
| #endif |
| |
| #define KERNEL_START (PAGE_OFFSET+KERNEL_START_PHYS) |
| #define SWAPPER_PGD KERNEL_START |
| #define INIT_STACK (PAGE_OFFSET+KERNEL_START_PHYS+0x02000) |
| #define EMPTY_PGT (PAGE_OFFSET+KERNEL_START_PHYS+0x04000) |
| #define EMPTY_PGE (PAGE_OFFSET+KERNEL_START_PHYS+0x08000) |
| #define ZERO_PGE (PAGE_OFFSET+KERNEL_START_PHYS+0x0A000) |
| |
| #define START_ADDR (PAGE_OFFSET+KERNEL_START_PHYS+0x10000) |
| |
| /* |
| * This is setup by the secondary bootstrap loader. Because |
| * the zero page is zeroed out as soon as the vm system is |
| * initialized, we need to copy things out into a more permanent |
| * place. |
| */ |
| #define PARAM ZERO_PGE |
| #define COMMAND_LINE ((char*)(PARAM + 0x0000)) |
| #define INITRD_START (*(unsigned long *) (PARAM+0x100)) |
| #define INITRD_SIZE (*(unsigned long *) (PARAM+0x108)) |
| |
| #ifndef __ASSEMBLY__ |
| #include <linux/kernel.h> |
| #define AT_VECTOR_SIZE_ARCH 4 /* entries in ARCH_DLINFO */ |
| |
| /* |
| * This is the logout header that should be common to all platforms |
| * (assuming they are running OSF/1 PALcode, I guess). |
| */ |
| struct el_common { |
| unsigned int size; /* size in bytes of logout area */ |
| unsigned int sbz1 : 30; /* should be zero */ |
| unsigned int err2 : 1; /* second error */ |
| unsigned int retry : 1; /* retry flag */ |
| unsigned int proc_offset; /* processor-specific offset */ |
| unsigned int sys_offset; /* system-specific offset */ |
| unsigned int code; /* machine check code */ |
| unsigned int frame_rev; /* frame revision */ |
| }; |
| |
| /* Machine Check Frame for uncorrectable errors (Large format) |
| * --- This is used to log uncorrectable errors such as |
| * double bit ECC errors. |
| * --- These errors are detected by both processor and systems. |
| */ |
| struct el_common_EV5_uncorrectable_mcheck { |
| unsigned long shadow[8]; /* Shadow reg. 8-14, 25 */ |
| unsigned long paltemp[24]; /* PAL TEMP REGS. */ |
| unsigned long exc_addr; /* Address of excepting instruction*/ |
| unsigned long exc_sum; /* Summary of arithmetic traps. */ |
| unsigned long exc_mask; /* Exception mask (from exc_sum). */ |
| unsigned long pal_base; /* Base address for PALcode. */ |
| unsigned long isr; /* Interrupt Status Reg. */ |
| unsigned long icsr; /* CURRENT SETUP OF EV5 IBOX */ |
| unsigned long ic_perr_stat; /* I-CACHE Reg. <11> set Data parity |
| <12> set TAG parity*/ |
| unsigned long dc_perr_stat; /* D-CACHE error Reg. Bits set to 1: |
| <2> Data error in bank 0 |
| <3> Data error in bank 1 |
| <4> Tag error in bank 0 |
| <5> Tag error in bank 1 */ |
| unsigned long va; /* Effective VA of fault or miss. */ |
| unsigned long mm_stat; /* Holds the reason for D-stream |
| fault or D-cache parity errors */ |
| unsigned long sc_addr; /* Address that was being accessed |
| when EV5 detected Secondary cache |
| failure. */ |
| unsigned long sc_stat; /* Helps determine if the error was |
| TAG/Data parity(Secondary Cache)*/ |
| unsigned long bc_tag_addr; /* Contents of EV5 BC_TAG_ADDR */ |
| unsigned long ei_addr; /* Physical address of any transfer |
| that is logged in EV5 EI_STAT */ |
| unsigned long fill_syndrome; /* For correcting ECC errors. */ |
| unsigned long ei_stat; /* Helps identify reason of any |
| processor uncorrectable error |
| at its external interface. */ |
| unsigned long ld_lock; /* Contents of EV5 LD_LOCK register*/ |
| }; |
| |
| struct el_common_EV6_mcheck { |
| unsigned int FrameSize; /* Bytes, including this field */ |
| unsigned int FrameFlags; /* <31> = Retry, <30> = Second Error */ |
| unsigned int CpuOffset; /* Offset to CPU-specific info */ |
| unsigned int SystemOffset; /* Offset to system-specific info */ |
| unsigned int MCHK_Code; |
| unsigned int MCHK_Frame_Rev; |
| unsigned long I_STAT; /* EV6 Internal Processor Registers */ |
| unsigned long DC_STAT; /* (See the 21264 Spec) */ |
| unsigned long C_ADDR; |
| unsigned long DC1_SYNDROME; |
| unsigned long DC0_SYNDROME; |
| unsigned long C_STAT; |
| unsigned long C_STS; |
| unsigned long MM_STAT; |
| unsigned long EXC_ADDR; |
| unsigned long IER_CM; |
| unsigned long ISUM; |
| unsigned long RESERVED0; |
| unsigned long PAL_BASE; |
| unsigned long I_CTL; |
| unsigned long PCTX; |
| }; |
| |
| extern void halt(void) __attribute__((noreturn)); |
| #define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt)) |
| |
| #define switch_to(P,N,L) \ |
| do { \ |
| (L) = alpha_switch_to(virt_to_phys(&task_thread_info(N)->pcb), (P)); \ |
| check_mmu_context(); \ |
| } while (0) |
| |
| struct task_struct; |
| extern struct task_struct *alpha_switch_to(unsigned long, struct task_struct*); |
| |
| #define imb() \ |
| __asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory") |
| |
| #define draina() \ |
| __asm__ __volatile__ ("call_pal %0 #draina" : : "i" (PAL_draina) : "memory") |
| |
| enum implver_enum { |
| IMPLVER_EV4, |
| IMPLVER_EV5, |
| IMPLVER_EV6 |
| }; |
| |
| #ifdef CONFIG_ALPHA_GENERIC |
| #define implver() \ |
| ({ unsigned long __implver; \ |
| __asm__ ("implver %0" : "=r"(__implver)); \ |
| (enum implver_enum) __implver; }) |
| #else |
| /* Try to eliminate some dead code. */ |
| #ifdef CONFIG_ALPHA_EV4 |
| #define implver() IMPLVER_EV4 |
| #endif |
| #ifdef CONFIG_ALPHA_EV5 |
| #define implver() IMPLVER_EV5 |
| #endif |
| #if defined(CONFIG_ALPHA_EV6) |
| #define implver() IMPLVER_EV6 |
| #endif |
| #endif |
| |
| enum amask_enum { |
| AMASK_BWX = (1UL << 0), |
| AMASK_FIX = (1UL << 1), |
| AMASK_CIX = (1UL << 2), |
| AMASK_MAX = (1UL << 8), |
| AMASK_PRECISE_TRAP = (1UL << 9), |
| }; |
| |
| #define amask(mask) \ |
| ({ unsigned long __amask, __input = (mask); \ |
| __asm__ ("amask %1,%0" : "=r"(__amask) : "rI"(__input)); \ |
| __amask; }) |
| |
| #define __CALL_PAL_R0(NAME, TYPE) \ |
| extern inline TYPE NAME(void) \ |
| { \ |
| register TYPE __r0 __asm__("$0"); \ |
| __asm__ __volatile__( \ |
| "call_pal %1 # " #NAME \ |
| :"=r" (__r0) \ |
| :"i" (PAL_ ## NAME) \ |
| :"$1", "$16", "$22", "$23", "$24", "$25"); \ |
| return __r0; \ |
| } |
| |
| #define __CALL_PAL_W1(NAME, TYPE0) \ |
| extern inline void NAME(TYPE0 arg0) \ |
| { \ |
| register TYPE0 __r16 __asm__("$16") = arg0; \ |
| __asm__ __volatile__( \ |
| "call_pal %1 # "#NAME \ |
| : "=r"(__r16) \ |
| : "i"(PAL_ ## NAME), "0"(__r16) \ |
| : "$1", "$22", "$23", "$24", "$25"); \ |
| } |
| |
| #define __CALL_PAL_W2(NAME, TYPE0, TYPE1) \ |
| extern inline void NAME(TYPE0 arg0, TYPE1 arg1) \ |
| { \ |
| register TYPE0 __r16 __asm__("$16") = arg0; \ |
| register TYPE1 __r17 __asm__("$17") = arg1; \ |
| __asm__ __volatile__( \ |
| "call_pal %2 # "#NAME \ |
| : "=r"(__r16), "=r"(__r17) \ |
| : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \ |
| : "$1", "$22", "$23", "$24", "$25"); \ |
| } |
| |
| #define __CALL_PAL_RW1(NAME, RTYPE, TYPE0) \ |
| extern inline RTYPE NAME(TYPE0 arg0) \ |
| { \ |
| register RTYPE __r0 __asm__("$0"); \ |
| register TYPE0 __r16 __asm__("$16") = arg0; \ |
| __asm__ __volatile__( \ |
| "call_pal %2 # "#NAME \ |
| : "=r"(__r16), "=r"(__r0) \ |
| : "i"(PAL_ ## NAME), "0"(__r16) \ |
| : "$1", "$22", "$23", "$24", "$25"); \ |
| return __r0; \ |
| } |
| |
| #define __CALL_PAL_RW2(NAME, RTYPE, TYPE0, TYPE1) \ |
| extern inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1) \ |
| { \ |
| register RTYPE __r0 __asm__("$0"); \ |
| register TYPE0 __r16 __asm__("$16") = arg0; \ |
| register TYPE1 __r17 __asm__("$17") = arg1; \ |
| __asm__ __volatile__( \ |
| "call_pal %3 # "#NAME \ |
| : "=r"(__r16), "=r"(__r17), "=r"(__r0) \ |
| : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \ |
| : "$1", "$22", "$23", "$24", "$25"); \ |
| return __r0; \ |
| } |
| |
| __CALL_PAL_W1(cflush, unsigned long); |
| __CALL_PAL_R0(rdmces, unsigned long); |
| __CALL_PAL_R0(rdps, unsigned long); |
| __CALL_PAL_R0(rdusp, unsigned long); |
| __CALL_PAL_RW1(swpipl, unsigned long, unsigned long); |
| __CALL_PAL_R0(whami, unsigned long); |
| __CALL_PAL_W2(wrent, void*, unsigned long); |
| __CALL_PAL_W1(wripir, unsigned long); |
| __CALL_PAL_W1(wrkgp, unsigned long); |
| __CALL_PAL_W1(wrmces, unsigned long); |
| __CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long); |
| __CALL_PAL_W1(wrusp, unsigned long); |
| __CALL_PAL_W1(wrvptptr, unsigned long); |
| |
| #define IPL_MIN 0 |
| #define IPL_SW0 1 |
| #define IPL_SW1 2 |
| #define IPL_DEV0 3 |
| #define IPL_DEV1 4 |
| #define IPL_TIMER 5 |
| #define IPL_PERF 6 |
| #define IPL_POWERFAIL 6 |
| #define IPL_MCHECK 7 |
| #define IPL_MAX 7 |
| |
| #ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK |
| #undef IPL_MIN |
| #define IPL_MIN __min_ipl |
| extern int __min_ipl; |
| #endif |
| |
| #define getipl() (rdps() & 7) |
| #define setipl(ipl) ((void) swpipl(ipl)) |
| |
| #define local_irq_disable() do { setipl(IPL_MAX); barrier(); } while(0) |
| #define local_irq_enable() do { barrier(); setipl(IPL_MIN); } while(0) |
| #define local_save_flags(flags) ((flags) = rdps()) |
| #define local_irq_save(flags) do { (flags) = swpipl(IPL_MAX); barrier(); } while(0) |
| #define local_irq_restore(flags) do { barrier(); setipl(flags); barrier(); } while(0) |
| |
| #define irqs_disabled() (getipl() == IPL_MAX) |
| |
| /* |
| * TB routines.. |
| */ |
| #define __tbi(nr,arg,arg1...) \ |
| ({ \ |
| register unsigned long __r16 __asm__("$16") = (nr); \ |
| register unsigned long __r17 __asm__("$17"); arg; \ |
| __asm__ __volatile__( \ |
| "call_pal %3 #__tbi" \ |
| :"=r" (__r16),"=r" (__r17) \ |
| :"0" (__r16),"i" (PAL_tbi) ,##arg1 \ |
| :"$0", "$1", "$22", "$23", "$24", "$25"); \ |
| }) |
| |
| #define tbi(x,y) __tbi(x,__r17=(y),"1" (__r17)) |
| #define tbisi(x) __tbi(1,__r17=(x),"1" (__r17)) |
| #define tbisd(x) __tbi(2,__r17=(x),"1" (__r17)) |
| #define tbis(x) __tbi(3,__r17=(x),"1" (__r17)) |
| #define tbiap() __tbi(-1, /* no second argument */) |
| #define tbia() __tbi(-2, /* no second argument */) |
| |
| /* |
| * Atomic exchange routines. |
| */ |
| |
| #define __ASM__MB |
| #define ____xchg(type, args...) __xchg ## type ## _local(args) |
| #define ____cmpxchg(type, args...) __cmpxchg ## type ## _local(args) |
| #include <asm/xchg.h> |
| |
| #define xchg_local(ptr,x) \ |
| ({ \ |
| __typeof__(*(ptr)) _x_ = (x); \ |
| (__typeof__(*(ptr))) __xchg_local((ptr), (unsigned long)_x_, \ |
| sizeof(*(ptr))); \ |
| }) |
| |
| #define cmpxchg_local(ptr, o, n) \ |
| ({ \ |
| __typeof__(*(ptr)) _o_ = (o); \ |
| __typeof__(*(ptr)) _n_ = (n); \ |
| (__typeof__(*(ptr))) __cmpxchg_local((ptr), (unsigned long)_o_, \ |
| (unsigned long)_n_, \ |
| sizeof(*(ptr))); \ |
| }) |
| |
| #define cmpxchg64_local(ptr, o, n) \ |
| ({ \ |
| BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ |
| cmpxchg_local((ptr), (o), (n)); \ |
| }) |
| |
| #ifdef CONFIG_SMP |
| #undef __ASM__MB |
| #define __ASM__MB "\tmb\n" |
| #endif |
| #undef ____xchg |
| #undef ____cmpxchg |
| #define ____xchg(type, args...) __xchg ##type(args) |
| #define ____cmpxchg(type, args...) __cmpxchg ##type(args) |
| #include <asm/xchg.h> |
| |
| #define xchg(ptr,x) \ |
| ({ \ |
| __typeof__(*(ptr)) _x_ = (x); \ |
| (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \ |
| sizeof(*(ptr))); \ |
| }) |
| |
| #define cmpxchg(ptr, o, n) \ |
| ({ \ |
| __typeof__(*(ptr)) _o_ = (o); \ |
| __typeof__(*(ptr)) _n_ = (n); \ |
| (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \ |
| (unsigned long)_n_, sizeof(*(ptr)));\ |
| }) |
| |
| #define cmpxchg64(ptr, o, n) \ |
| ({ \ |
| BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ |
| cmpxchg((ptr), (o), (n)); \ |
| }) |
| |
| #undef __ASM__MB |
| #undef ____cmpxchg |
| |
| #define __HAVE_ARCH_CMPXCHG 1 |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #define arch_align_stack(x) (x) |
| |
| #endif |