1*34293Skarels /* 2*34293Skarels * @(#)kdbreg.h 7.1 (Berkeley) 05/14/88 3*34293Skarels */ 4*34293Skarels /* 5*34293Skarels * The KDB50 registers are embedded inside the bi interface 6*34293Skarels * general-purpose registers. 7*34293Skarels */ 8*34293Skarels struct kdb_regs { 9*34293Skarels struct biiregs kdb_bi; 10*34293Skarels short kdb_xxx; /* first half of GPR 0 unused */ 11*34293Skarels short kdb_ip; /* initialisation and polling */ 12*34293Skarels short kdb_sa; /* status & address (r/o half) */ 13*34293Skarels short kdb_sw; /* status & address (w/o half) */ 14*34293Skarels }; 15*34293Skarels 16*34293Skarels /* 17*34293Skarels * Bits in KDB status register during initialisation 18*34293Skarels */ 19*34293Skarels #define KDB_ERR 0x8000 /* error */ 20*34293Skarels #define KDB_STEP4 0x4000 /* step 4 has started */ 21*34293Skarels #define KDB_STEP3 0x2000 /* step 3 has started */ 22*34293Skarels #define KDB_STEP2 0x1000 /* step 2 has started */ 23*34293Skarels #define KDB_STEP1 0x0800 /* step 1 has started */ 24*34293Skarels #define KDB_DI 0x0100 /* controller implements diagnostics */ 25*34293Skarels #define KDB_IE 0x0080 /* interrupt enable */ 26*34293Skarels #define KDB_NCNRMASK 0x003f /* in STEP1, bits 0-2=NCMDL2, 3-5=NRSPL2 */ 27*34293Skarels #define KDB_IVECMASK 0x007f /* in STEP2, bits 0-6 are interruptvec / 4 */ 28*34293Skarels 29*34293Skarels /* after initialisation: */ 30*34293Skarels #define KDB_GO 0x0001 /* run */ 31*34293Skarels 32*34293Skarels #define KDBSR_BITS \ 33*34293Skarels "\20\20ERR\17STEP4\16STEP3\15STEP2\14STEP1\13oldNV\12oldQB\11DI\10IE\1GO" 34*34293Skarels 35*34293Skarels /* 36*34293Skarels * KDB Communications Area. Note that this structure definition 37*34293Skarels * requires NRSP and NCMD to be defined already. 38*34293Skarels */ 39*34293Skarels struct kdbca { 40*34293Skarels short ca_xxx1; /* unused */ 41*34293Skarels char ca_xxx2; /* unused */ 42*34293Skarels char ca_bdp; /* BDP to purge XXX */ 43*34293Skarels short ca_cmdint; /* command ring transition flag */ 44*34293Skarels short ca_rspint; /* response ring transition flag */ 45*34293Skarels long ca_rspdsc[NRSP];/* response descriptors */ 46*34293Skarels long ca_cmddsc[NCMD];/* command descriptors */ 47*34293Skarels }; 48*34293Skarels 49*34293Skarels /* 50*34293Skarels * Simplified routines (crash dump) use one command and one response. 51*34293Skarels */ 52*34293Skarels struct kdb1ca { 53*34293Skarels long ca_xxx; 54*34293Skarels short ca_cmdint; 55*34293Skarels short ca_rspint; 56*34293Skarels long ca_rspdsc; 57*34293Skarels long ca_cmddsc; 58*34293Skarels }; 59*34293Skarels 60*34293Skarels /* 61*34293Skarels * Asserting KDB_MAP in values placed in mscp_seq.seq_buffer tells 62*34293Skarels * the KDB to use mscp_seq.seq_mapbase as a set of PTEs and seq_buffer 63*34293Skarels * as an offset value. Hence we need no mappings; the KDB50 reads 64*34293Skarels * the hardware page tables directly. (Without KDB_MAP, seq_bufer 65*34293Skarels * represents the physical memory address instead, and seq_mapbase is 66*34293Skarels * unused.) 67*34293Skarels */ 68*34293Skarels #define KDB_MAP 0x80000000 69*34293Skarels #define KDB_PHYS 0 /* pseudo flag */ 70*34293Skarels 71*34293Skarels /* 72*34293Skarels * KDB statistics. 73*34293Skarels */ 74*34293Skarels #define KS_MAXC 32 75*34293Skarels 76*34293Skarels struct kdbstats { 77*34293Skarels int ks_sys; /* transfers done from Sysmap */ 78*34293Skarels int ks_paget; /* transfers done from Usrptmap */ 79*34293Skarels int ks_contig; /* transfers done from contiguous user map */ 80*34293Skarels int ks_copies; /* transfers done from pte copies */ 81*34293Skarels int ks_mapwait; /* number of out-of-map waits */ 82*34293Skarels int ks_cmd[KS_MAXC];/* commands started at once */ 83*34293Skarels int ks_inval; /* copies due to !PG_V */ 84*34293Skarels }; 85