ref: c33fc43408cb22d606d2f621c34a5748cb0e2bc5
dir: /sys/src/9/mtx/mem.h/
/* * Memory and machine-specific definitions. Used in C and assembler. */ /* * Sizes */ #define BI2BY 8 /* bits per byte */ #define BI2WD 32 /* bits per word */ #define BY2WD 4 /* bytes per word */ #define BY2V 8 /* bytes per vlong */ #define BY2PG 4096 /* bytes per page */ #define WD2PG (BY2PG/BY2WD) /* words per page */ #define PGSHIFT 12 /* log(BY2PG) */ #define ROUND(s, sz) (((s)+(sz-1))&~(sz-1)) #define PGROUND(s) ROUND(s, BY2PG) #define CACHELINELOG 4 #define CACHELINESZ (1<<CACHELINELOG) #define BLOCKALIGN CACHELINESZ #define MHz 1000000 #define BY2PTE 8 /* bytes per pte entry */ #define BY2PTEG 64 /* bytes per pte group */ #define MAXMACH 1 /* max # cpus system can run */ #define MACHSIZE BY2PG #define KSTACK 4096 /* Size of kernel stack */ /* * Time */ #define HZ 100 /* clock frequency */ #define TK2SEC(t) ((t)/HZ) /* ticks to seconds */ /* * Standard PPC Special Purpose Registers (OEA and VEA) */ #define DSISR 18 #define DAR 19 /* Data Address Register */ #define DEC 22 /* Decrementer */ #define SDR1 25 #define SRR0 26 /* Saved Registers (exception) */ #define SRR1 27 #define SPRG0 272 /* Supervisor Private Registers */ #define SPRG1 273 #define SPRG2 274 #define SPRG3 275 #define ASR 280 /* Address Space Register */ #define EAR 282 /* External Access Register (optional) */ #define TBRU 269 /* Time base Upper/Lower (Reading) */ #define TBRL 268 #define TBWU 284 /* Time base Upper/Lower (Writing) */ #define TBWL 285 #define PVR 287 /* Processor Version */ #define IABR 1010 /* Instruction Address Breakpoint Register (optional) */ #define DABR 1013 /* Data Address Breakpoint Register (optional) */ #define FPECR 1022 /* Floating-Point Exception Cause Register (optional) */ #define PIR 1023 /* Processor Identification Register (optional) */ #define IBATU(i) (528+2*(i)) /* Instruction BAT register (upper) */ #define IBATL(i) (529+2*(i)) /* Instruction BAT register (lower) */ #define DBATU(i) (536+2*(i)) /* Data BAT register (upper) */ #define DBATL(i) (537+2*(i)) /* Data BAT register (lower) */ /* * PPC604e-specific Special Purpose Registers (OEA) */ #define HID0 1008 /* Hardware Implementation Dependant Register 0 */ #define HID1 1009 /* Hardware Implementation Dependant Register 1 */ #define PMC1 953 /* Performance Monitor Counter 1 */ #define PMC2 954 /* Performance Monitor Counter 2 */ #define PMC3 957 /* Performance Monitor Counter 3 */ #define PMC4 958 /* Performance Monitor Counter 4 */ #define MMCR0 952 /* Monitor Control Register 0 */ #define MMCR1 956 /* Monitor Control Register 0 */ #define SIA 955 /* Sampled Instruction Address */ #define SDA 959 /* Sampled Data Address */ #define BIT(i) (1<<(31-(i))) /* Silly backwards register bit numbering scheme */ /* * Bit encodings for Machine State Register (MSR) */ #define MSR_POW BIT(13) /* Enable Power Management */ #define MSR_ILE BIT(15) /* Interrupt Little-Endian enable */ #define MSR_EE BIT(16) /* External Interrupt enable */ #define MSR_PR BIT(17) /* Supervisor/User privelege */ #define MSR_FP BIT(18) /* Floating Point enable */ #define MSR_ME BIT(19) /* Machine Check enable */ #define MSR_FE0 BIT(20) /* Floating Exception mode 0 */ #define MSR_SE BIT(21) /* Single Step (optional) */ #define MSR_BE BIT(22) /* Branch Trace (optional) */ #define MSR_FE1 BIT(23) /* Floating Exception mode 1 */ #define MSR_IP BIT(25) /* Exception prefix 0x000/0xFFF */ #define MSR_IR BIT(26) /* Instruction MMU enable */ #define MSR_DR BIT(27) /* Data MMU enable */ #define MSR_PM BIT(29) /* Performance Monitor marked mode (604e specific) */ #define MSR_RI BIT(30) /* Recoverable Exception */ #define MSR_LE BIT(31) /* Little-Endian enable */ /* * Exception codes (trap vectors) */ #define CRESET 0x01 #define CMCHECK 0x02 #define CDSI 0x03 #define CISI 0x04 #define CEI 0x05 #define CALIGN 0x06 #define CPROG 0x07 #define CFPU 0x08 #define CDEC 0x09 #define CSYSCALL 0x0C #define CTRACE 0x0D /* optional */ #define CFPA 0x0E /* optional */ /* PPC604e-specific: */ #define CPERF 0x0F /* performance monitoring */ #define CIBREAK 0x13 #define CSMI 0x14 /* * Magic registers */ #define MACH 30 /* R30 is m-> */ #define USER 29 /* R29 is up-> */ /* * virtual MMU */ #define PTEMAPMEM (1024*1024) #define PTEPERTAB (PTEMAPMEM/BY2PG) #define SEGMAPSIZE 1984 #define SSEGMAPSIZE 16 #define PPN(x) ((x)&~(BY2PG-1)) /* * First pte word */ #define PTE0(v, vsid, h, va) (((v)<<31)|((vsid)<<7)|((h)<<6)|(((va)>>22)&0x3f)) /* * Second pte word; WIMG & PP(RW/RO) common to page table and BATs */ #define PTE1_W BIT(25) #define PTE1_I BIT(26) #define PTE1_M BIT(27) #define PTE1_G BIT(28) #define PTE1_RW BIT(30) #define PTE1_RO BIT(31) /* * PTE bits for fault.c. These belong to the second PTE word. Validity is * implied for putmmu(), and we always set PTE0_V. PTEVALID is used * here to set cache policy bits on a global basis. */ #define PTEVALID 0 #define PTEWRITE PTE1_RW #define PTERONLY PTE1_RO #define PTEUNCACHED PTE1_I #define PTECACHED 0 /* * Address spaces */ #define UZERO 0 /* base of user address space */ #define UTZERO (UZERO+BY2PG) /* first address in user text */ #define KZERO 0x80000000 /* base of kernel address space */ #define KTZERO (KZERO+0x4000) /* first address in kernel text */ #define USTKTOP KZERO /* byte just beyond user stack */ #define USTKSIZE (4*1024*1024) /* size of user stack */ #define UREGSIZE ((8+32)*4) #define PCIMEM0 0xf0000000 #define PCISIZE0 0x0e000000 #define PCIMEM1 0xc0000000 #define PCISIZE1 0x30000000 #define IOMEM 0xfe000000 #define IOSIZE 0x00800000 #define FALCON 0xfef80000 #define RAVEN 0xfeff0000 #define FLASHA 0xff000000 #define FLASHB 0xff800000 #define FLASHAorB 0xfff00000 #define isphys(x) (((ulong)x&KZERO)!=0) #define getpgcolor(a) 0