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COMPLETE.T：源码内容

09496 #define proc_addr(n) (pproc_addr + NR_TASKS)[(n)]
09497 #define cproc_addr(n) (&(proc + NR_TASKS)[(n)])
09498 #define proc_number(p) ((p)->p_nr)
09499 #define proc_vir2phys(p, vir)
.Ep 100 src/kernel/proc.h
09500 (((phys_bytes)(p)->p_map[D].mem_phys << CLICK_SHIFT)
09501 + (vir_bytes) (vir))
09502 #if (SHADOWING == 1)
09503 #define isshadowp(p) ((p)->p_shadow != 0)
09504 #endif
09505
09506 EXTERN struct proc proc[NR_TASKS + NR_PROCS]; /* process table */
09507 EXTERN struct proc *pproc_addr[NR_TASKS + NR_PROCS];
09508 /* ptrs to process table slots; fast because now a process entry can be found
09509 by indexing the pproc_addr array, while accessing an element i requires
09510 a multiplication with sizeof(struct proc) to determine the address */
09511 EXTERN struct proc *bill_ptr; /* ptr to process to bill for clock ticks */
09512 EXTERN struct proc *rdy_head[NQ]; /* pointers to ready list headers */
09513 EXTERN struct proc *rdy_tail[NQ]; /* pointers to ready list tails */
09514
09515 #endif /* PROC_H */
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/protect.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
09600 /* Constants for protected mode. */
09601
09602 /* Table sizes. */
09603 #define GDT_SIZE (FIRST_LDT_INDEX + NR_TASKS + NR_PROCS) /* spec. and LDT's */
09604 #define IDT_SIZE (IRQ8_VECTOR + 8) /* only up to the highest vector */
09605 #define LDT_SIZE 2 /* contains CS and DS only */
09606
09607 /* Fixed global descriptors. 1 to 7 are prescribed by the BIOS. */
09608 #define GDT_INDEX 1 /* GDT descriptor */
09609 #define IDT_INDEX 2 /* IDT descriptor */
09610 #define DS_INDEX 3 /* kernel DS */
09611 #define ES_INDEX 4 /* kernel ES (386: flag 4 Gb at startup) */
09612 #define SS_INDEX 5 /* kernel SS (386: monitor SS at startup) */
09613 #define CS_INDEX 6 /* kernel CS */
09614 #define MON_CS_INDEX 7 /* temp for BIOS (386: monitor CS at startup) */
09615 #define TSS_INDEX 8 /* kernel TSS */
09616 #define DS_286_INDEX 9 /* scratch 16-bit source segment */
09617 #define ES_286_INDEX 10 /* scratch 16-bit destination segment */
09618 #define VIDEO_INDEX 11 /* video memory segment */
09619 #define DP_ETH0_INDEX 12 /* Western Digital Etherplus buffer */
09620 #define DP_ETH1_INDEX 13 /* Western Digital Etherplus buffer */
09621 #define FIRST_LDT_INDEX 14 /* rest of descriptors are LDT's */
09622
09623 #define GDT_SELECTOR 0x08 /* (GDT_INDEX * DESC_SIZE) bad for asld */
09624 #define IDT_SELECTOR 0x10 /* (IDT_INDEX * DESC_SIZE) */
09625 #define DS_SELECTOR 0x18 /* (DS_INDEX * DESC_SIZE) */
09626 #define ES_SELECTOR 0x20 /* (ES_INDEX * DESC_SIZE) */
09627 #define FLAT_DS_SELECTOR 0x21 /* less privileged ES */
09628 #define SS_SELECTOR 0x28 /* (SS_INDEX * DESC_SIZE) */
09629 #define CS_SELECTOR 0x30 /* (CS_INDEX * DESC_SIZE) */
09630 #define MON_CS_SELECTOR 0x38 /* (MON_CS_INDEX * DESC_SIZE) */
09631 #define TSS_SELECTOR 0x40 /* (TSS_INDEX * DESC_SIZE) */
09632 #define DS_286_SELECTOR 0x49 /* (DS_286_INDEX * DESC_SIZE + 1) */
09633 #define ES_286_SELECTOR 0x51 /* (ES_286_INDEX * DESC_SIZE + 1) */
09634 #define VIDEO_SELECTOR 0x59 /* (VIDEO_INDEX * DESC_SIZE + 1) */
.Op 101 src/kernel/protect.h
09635 #define DP_ETH0_SELECTOR 0x61 /* (DP_ETH0_INDEX * DESC_SIZE) */
09636 #define DP_ETH1_SELECTOR 0x69 /* (DP_ETH1_INDEX * DESC_SIZE) */
09637
09638 /* Fixed local descriptors. */
09639 #define CS_LDT_INDEX 0 /* process CS */
09640 #define DS_LDT_INDEX 1 /* process DS=ES=FS=GS=SS */
09641
09642 /* Privileges. */
09643 #define INTR_PRIVILEGE 0 /* kernel and interrupt handlers */
09644 #define TASK_PRIVILEGE 1
09645 #define USER_PRIVILEGE 3
09646
09647 /* 286 hardware constants. */
09648
09649 /* Exception vector numbers. */
09650 #define BOUNDS_VECTOR 5 /* bounds check failed */
09651 #define INVAL_OP_VECTOR 6 /* invalid opcode */
09652 #define COPROC_NOT_VECTOR 7 /* coprocessor not available */
09653 #define DOUBLE_FAULT_VECTOR 8
09654 #define COPROC_SEG_VECTOR 9 /* coprocessor segment overrun */
09655 #define INVAL_TSS_VECTOR 10 /* invalid TSS */
09656 #define SEG_NOT_VECTOR 11 /* segment not present */
09657 #define STACK_FAULT_VECTOR 12 /* stack exception */
09658 #define PROTECTION_VECTOR 13 /* general protection */
09659
09660 /* Selector bits. */
09661 #define TI 0x04 /* table indicator */
09662 #define RPL 0x03 /* requester privilege level */
09663
09664 /* Descriptor structure offsets. */
09665 #define DESC_BASE 2 /* to base_low */
09666 #define DESC_BASE_MIDDLE 4 /* to base_middle */
09667 #define DESC_ACCESS 5 /* to access byte */
09668 #define DESC_SIZE 8 /* sizeof (struct segdesc_s) */
09669
09670 /* Segment sizes. */
09671 #define MAX_286_SEG_SIZE 0x10000L
09672
09673 /* Base and limit sizes and shifts. */
09674 #define BASE_MIDDLE_SHIFT 16 /* shift for base --> base_middle */
09675
09676 /* Access-byte and type-byte bits. */
09677 #define PRESENT 0x80 /* set for descriptor present */
09678 #define DPL 0x60 /* descriptor privilege level mask */
09679 #define DPL_SHIFT 5
09680 #define SEGMENT 0x10 /* set for segment-type descriptors */
09681
09682 /* Access-byte bits. */
09683 #define EXECUTABLE 0x08 /* set for executable segment */
09684 #define CONFORMING 0x04 /* set for conforming segment if executable */
09685 #define EXPAND_DOWN 0x04 /* set for expand-down segment if !executable*/
09686 #define READABLE 0x02 /* set for readable segment if executable */
09687 #define WRITEABLE 0x02 /* set for writeable segment if !executable */
09688 #define TSS_BUSY 0x02 /* set if TSS descriptor is busy */
09689 #define ACCESSED 0x01 /* set if segment accessed */
09690
09691 /* Special descriptor types. */
09692 #define AVL_286_TSS 1 /* available 286 TSS */
09693 #define LDT 2 /* local descriptor table */
09694 #define BUSY_286_TSS 3 /* set transparently to the software */
.Ep 102 src/kernel/protect.h
09695 #define CALL_286_GATE 4 /* not used */
09696 #define TASK_GATE 5 /* only used by debugger */
09697 #define INT_286_GATE 6 /* interrupt gate, used for all vectors */
09698 #define TRAP_286_GATE 7 /* not used */
09699
09700 /* Extra 386 hardware constants. */
09701
09702 /* Exception vector numbers. */
09703 #define PAGE_FAULT_VECTOR 14
09704 #define COPROC_ERR_VECTOR 16 /* coprocessor error */
09705
09706 /* Descriptor structure offsets. */
09707 #define DESC_GRANULARITY 6 /* to granularity byte */
09708 #define DESC_BASE_HIGH 7 /* to base_high */
09709
09710 /* Base and limit sizes and shifts. */
09711 #define BASE_HIGH_SHIFT 24 /* shift for base --> base_high */
09712 #define BYTE_GRAN_MAX 0xFFFFFL /* maximum size for byte granular segment */
09713 #define GRANULARITY_SHIFT 16 /* shift for limit --> granularity */
09714 #define OFFSET_HIGH_SHIFT 16 /* shift for (gate) offset --> offset_high */
09715 #define PAGE_GRAN_SHIFT 12 /* extra shift for page granular limits */
09716
09717 /* Type-byte bits. */
09718 #define DESC_386_BIT 0x08 /* 386 types are obtained by ORing with this */
09719 /* LDT's and TASK_GATE's don't need it */
09720
09721 /* Granularity byte. */
09722 #define GRANULAR 0x80 /* set for 4K granularilty */
09723 #define DEFAULT 0x40 /* set for 32-bit defaults (executable seg) */
09724 #define BIG 0x40 /* set for "BIG" (expand-down seg) */
09725 #define AVL 0x10 /* 0 for available */
09726 #define LIMIT_HIGH 0x0F /* mask for high bits of limit */
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/proto.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
09800 /* Function prototypes. */
09801
09802 #ifndef PROTO_H
09803 #define PROTO_H
09804
09805 /* Struct declarations. */
09806 struct dpeth;
09807 struct proc;
09808 struct tty;
09809
09810 /* at_wini.c, bios_wini.c, esdi_wini.c, ps_wini.c, xt_wini.c, wini.c */
09811 _PROTOTYPE( void winchester_task, (void) );
09812 _PROTOTYPE( void at_winchester_task, (void) );
09813 _PROTOTYPE( void bios_winchester_task, (void) );
09814 _PROTOTYPE( void esdi_winchester_task, (void) );
09815 _PROTOTYPE( void ps_winchester_task, (void) );
09816 _PROTOTYPE( void xt_winchester_task, (void) );
09817
09818 /* aha_scsi.c */
09819 _PROTOTYPE( void aha_scsi_task, (void) );
.Op 103 src/kernel/proto.h
09820
09821 /* clock.c */
09822 _PROTOTYPE( void clock_task, (void) );
09823 _PROTOTYPE( void clock_stop, (void) );
09824 _PROTOTYPE( clock_t get_uptime, (void) );
09825 _PROTOTYPE( void syn_alrm_task, (void) );
09826
09827 /* dmp.c */
09828 _PROTOTYPE( void map_dmp, (void) );
09829 _PROTOTYPE( void p_dmp, (void) );
09830 _PROTOTYPE( void reg_dmp, (struct proc *rp) );
09831
09832 /* dp8390.c */
09833 _PROTOTYPE( void dp8390_task, (void) );
09834 _PROTOTYPE( void dp_dump, (void) );
09835 _PROTOTYPE( void dp8390_stop, (void) );
09836
09837 /* floppy.c, stfloppy.c */
09838 _PROTOTYPE( void floppy_task, (void) );
09839 _PROTOTYPE( void floppy_stop, (void) );
09840
09841 /* main.c, stmain.c */
09842 _PROTOTYPE( void main, (void) );
09843 _PROTOTYPE( void panic, (const char *s, int n) );
09844
09845 /* mcd.c */
09846 _PROTOTYPE( void mcd_task, (void) );
09847
09848 /* memory.c */
09849 _PROTOTYPE( void mem_task, (void) );
09850
09851 /* misc.c */
09852 _PROTOTYPE( int env_parse, (char *env, char *fmt, int field,
09853 long *param, long min, long max) );
09854
09855 /* printer.c, stprint.c */
09856 _PROTOTYPE( void printer_task, (void) );
09857
09858 /* proc.c */
09859 _PROTOTYPE( void interrupt, (int task) );
09860 _PROTOTYPE( int lock_mini_send, (struct proc *caller_ptr,
09861 int dest, message *m_ptr) );
09862 _PROTOTYPE( void lock_pick_proc, (void) );
09863 _PROTOTYPE( void lock_ready, (struct proc *rp) );
09864 _PROTOTYPE( void lock_sched, (void) );
09865 _PROTOTYPE( void lock_unready, (struct proc *rp) );
09866 _PROTOTYPE( int sys_call, (int function, int src_dest, message *m_ptr) );
09867 _PROTOTYPE( void unhold, (void) );
09868
09869 /* rs232.c */
09870 _PROTOTYPE( void rs_init, (struct tty *tp) );
09871
09872 /* sb16_dsp.c */
09873 _PROTOTYPE( void dsp_task, (void) );
09874
09875 /* sb16_mixer.c */
09876 _PROTOTYPE( void mixer_task, (void) );
09877
09878 /* system.c */
09879 _PROTOTYPE( void cause_sig, (int proc_nr, int sig_nr) );
.Ep 104 src/kernel/proto.h
09880 _PROTOTYPE( void inform, (void) );
09881 _PROTOTYPE( phys_bytes numap, (int proc_nr, vir_bytes vir_addr,
09882 vir_bytes bytes) );
09883 _PROTOTYPE( void sys_task, (void) );
09884 _PROTOTYPE( phys_bytes umap, (struct proc *rp, int seg, vir_bytes vir_addr,
09885 vir_bytes bytes) );
09886
09887 /* tty.c */
09888 _PROTOTYPE( void handle_events, (struct tty *tp) );
09889 _PROTOTYPE( void sigchar, (struct tty *tp, int sig) );
09890 _PROTOTYPE( void tty_task, (void) );
09891 _PROTOTYPE( int in_process, (struct tty *tp, char *buf, int count) );
09892 _PROTOTYPE( void out_process, (struct tty *tp, char *bstart, char *bpos,
09893 char *bend, int *icount, int *ocount) );
09894 _PROTOTYPE( void tty_wakeup, (clock_t now) );
09895 _PROTOTYPE( void tty_reply, (int code, int replyee, int proc_nr,
09896 int status) );
09897 _PROTOTYPE( void tty_devnop, (struct tty *tp) );
09898
09899 /* library */
09900 _PROTOTYPE( void *memcpy, (void *_s1, const void *_s2, size_t _n) );
09901
09902 #if (CHIP == INTEL)
09903
09904 /* clock.c */
09905 _PROTOTYPE( void milli_start, (struct milli_state *msp) );
09906 _PROTOTYPE( unsigned milli_elapsed, (struct milli_state *msp) );
09907 _PROTOTYPE( void milli_delay, (unsigned millisec) );
09908
09909 /* console.c */
09910 _PROTOTYPE( void cons_stop, (void) );
09911 _PROTOTYPE( void putk, (int c) );
09912 _PROTOTYPE( void scr_init, (struct tty *tp) );
09913 _PROTOTYPE( void toggle_scroll, (void) );
09914 _PROTOTYPE( int con_loadfont, (phys_bytes user_phys) );
09915 _PROTOTYPE( void select_console, (int cons_line) );
09916
09917 /* cstart.c */
09918 _PROTOTYPE( void cstart, (U16_t cs, U16_t ds, U16_t mcs, U16_t mds,
09919 U16_t parmoff, U16_t parmsize) );
09920 _PROTOTYPE( char *k_getenv, (char *name) );
09921
09922 /* exception.c */
09923 _PROTOTYPE( void exception, (unsigned vec_nr) );
09924
09925 /* i8259.c */
09926 _PROTOTYPE( irq_handler_t get_irq_handler, (int irq) );
09927 _PROTOTYPE( void put_irq_handler, (int irq, irq_handler_t handler) );
09928 _PROTOTYPE( void intr_init, (int mine) );
09929
09930 /* keyboard.c */
09931 _PROTOTYPE( void kb_init, (struct tty *tp) );
09932 _PROTOTYPE( int kbd_loadmap, (phys_bytes user_phys) );
09933 _PROTOTYPE( void wreboot, (int how) );
09934
09935 /* klib*.s */
09936 _PROTOTYPE( void bios13, (void) );
09937 _PROTOTYPE( phys_bytes check_mem, (phys_bytes base, phys_bytes size) );
09938 _PROTOTYPE( void cp_mess, (int src,phys_clicks src_clicks,vir_bytes src_offset,
09939 phys_clicks dst_clicks, vir_bytes dst_offset) );
.Op 105 src/kernel/proto.h
09940 _PROTOTYPE( int in_byte, (port_t port) );
09941 _PROTOTYPE( int in_word, (port_t port) );
09942 _PROTOTYPE( void lock, (void) );
09943 _PROTOTYPE( void unlock, (void) );
09944 _PROTOTYPE( void enable_irq, (unsigned irq) );
09945 _PROTOTYPE( int disable_irq, (unsigned irq) );
09946 _PROTOTYPE( u16_t mem_rdw, (segm_t segm, vir_bytes offset) );
09947 _PROTOTYPE( void out_byte, (port_t port, int value) );
09948 _PROTOTYPE( void out_word, (port_t port, int value) );
09949 _PROTOTYPE( void phys_copy, (phys_bytes source, phys_bytes dest,
09950 phys_bytes count) );
09951 _PROTOTYPE( void port_read, (unsigned port, phys_bytes destination,
09952 unsigned bytcount) );
09953 _PROTOTYPE( void port_read_byte, (unsigned port, phys_bytes destination,
09954 unsigned bytcount) );
09955 _PROTOTYPE( void port_write, (unsigned port, phys_bytes source,
09956 unsigned bytcount) );
09957 _PROTOTYPE( void port_write_byte, (unsigned port, phys_bytes source,
09958 unsigned bytcount) );
09959 _PROTOTYPE( void reset, (void) );
09960 _PROTOTYPE( void vid_vid_copy, (unsigned src, unsigned dst, unsigned count));
09961 _PROTOTYPE( void mem_vid_copy, (u16_t *src, unsigned dst, unsigned count));
09962 _PROTOTYPE( void level0, (void (*func)(void)) );
09963 _PROTOTYPE( void monitor, (void) );
09964
09965 /* misc.c */
09966 _PROTOTYPE( void mem_init, (void) );
09967
09968 /* mpx*.s */
09969 _PROTOTYPE( void idle_task, (void) );
09970 _PROTOTYPE( void restart, (void) );
09971
09972 /* The following are never called from C (pure asm procs). */
09973
09974 /* Exception handlers (real or protected mode), in numerical order. */
09975 void _PROTOTYPE( int00, (void) ), _PROTOTYPE( divide_error, (void) );
09976 void _PROTOTYPE( int01, (void) ), _PROTOTYPE( single_step_exception, (void) );
09977 void _PROTOTYPE( int02, (void) ), _PROTOTYPE( nmi, (void) );
09978 void _PROTOTYPE( int03, (void) ), _PROTOTYPE( breakpoint_exception, (void) );
09979 void _PROTOTYPE( int04, (void) ), _PROTOTYPE( overflow, (void) );
09980 void _PROTOTYPE( int05, (void) ), _PROTOTYPE( bounds_check, (void) );
09981 void _PROTOTYPE( int06, (void) ), _PROTOTYPE( inval_opcode, (void) );
09982 void _PROTOTYPE( int07, (void) ), _PROTOTYPE( copr_not_available, (void) );
09983 void _PROTOTYPE( double_fault, (void) );
09984 void _PROTOTYPE( copr_seg_overrun, (void) );
09985 void _PROTOTYPE( inval_tss, (void) );
09986 void _PROTOTYPE( segment_not_present, (void) );
09987 void _PROTOTYPE( stack_exception, (void) );
09988 void _PROTOTYPE( general_protection, (void) );
09989 void _PROTOTYPE( page_fault, (void) );
09990 void _PROTOTYPE( copr_error, (void) );
09991
09992 /* Hardware interrupt handlers. */
09993 _PROTOTYPE( void hwint00, (void) );
09994 _PROTOTYPE( void hwint01, (void) );
09995 _PROTOTYPE( void hwint02, (void) );
09996 _PROTOTYPE( void hwint03, (void) );
09997 _PROTOTYPE( void hwint04, (void) );
09998 _PROTOTYPE( void hwint05, (void) );
09999 _PROTOTYPE( void hwint06, (void) );
.Ep 106 src/kernel/proto.h
10000 _PROTOTYPE( void hwint07, (void) );
10001 _PROTOTYPE( void hwint08, (void) );
10002 _PROTOTYPE( void hwint09, (void) );
10003 _PROTOTYPE( void hwint10, (void) );
10004 _PROTOTYPE( void hwint11, (void) );
10005 _PROTOTYPE( void hwint12, (void) );
10006 _PROTOTYPE( void hwint13, (void) );
10007 _PROTOTYPE( void hwint14, (void) );
10008 _PROTOTYPE( void hwint15, (void) );
10009
10010 /* Software interrupt handlers, in numerical order. */
10011 _PROTOTYPE( void trp, (void) );
10012 _PROTOTYPE( void s_call, (void) ), _PROTOTYPE( p_s_call, (void) );
10013 _PROTOTYPE( void level0_call, (void) );
10014
10015 /* ne2000.c */
10016 _PROTOTYPE( int ne_probe, (struct dpeth *dep) );
10017
10018 /* printer.c */
10019 _PROTOTYPE( void pr_restart, (void) );
10020
10021 /* protect.c */
10022 _PROTOTYPE( void prot_init, (void) );
10023 _PROTOTYPE( void init_codeseg, (struct segdesc_s *segdp, phys_bytes base,
10024 phys_bytes size, int privilege) );
10025 _PROTOTYPE( void init_dataseg, (struct segdesc_s *segdp, phys_bytes base,
10026 phys_bytes size, int privilege) );
10027 _PROTOTYPE( phys_bytes seg2phys, (U16_t seg) );
10028 _PROTOTYPE( void enable_iop, (struct proc *pp) );
10029
10030 /* pty.c */
10031 _PROTOTYPE( void do_pty, (struct tty *tp, message *m_ptr) );
10032 _PROTOTYPE( void pty_init, (struct tty *tp) );
10033
10034 /* system.c */
10035 _PROTOTYPE( void alloc_segments, (struct proc *rp) );
10036
10037 /* wdeth.c */
10038 _PROTOTYPE( int wdeth_probe, (struct dpeth *dep) );
10039
10040 #endif /* (CHIP == INTEL) */
10041
10042 #if (CHIP == M68000)
10043
10044 /* cstart.c */
10045 _PROTOTYPE( void cstart, (char *parmoff, size_t parmsize) );
10046
10047 /* stfloppy.c */
10048 _PROTOTYPE( void fd_timer, (void) );
10049
10050 /* stmain.c */
10051 _PROTOTYPE( void none, (void) );
10052 _PROTOTYPE( void rupt, (void) );
10053 _PROTOTYPE( void trap, (void) );
10054 _PROTOTYPE( void checksp, (void) );
10055 _PROTOTYPE( void aciaint, (void) );
10056 _PROTOTYPE( void fake_int, (const char *s, int t) );
10057 _PROTOTYPE( void timint, (int t) );
10058 _PROTOTYPE( void mdiint, (void) );
10059 _PROTOTYPE( void iob, (int t) );
.Op 107 src/kernel/proto.h
10060 _PROTOTYPE( void idle_task, (void) );
10061
10062 /* rs232.c */
10063 _PROTOTYPE( void siaint, (int type) );
10064
10065 /* stcon.c */
10066 _PROTOTYPE( void func_key, (void) );
10067 _PROTOTYPE( void dump, (void) );
10068 _PROTOTYPE( void putk, (int c) );
10069
10070 /* stdma.c */
10071 _PROTOTYPE( void dmagrab, (int p, dmaint_t func) );
10072 _PROTOTYPE( void dmafree, (int p) );
10073 _PROTOTYPE( void dmaint, (void) );
10074 _PROTOTYPE( void dmaaddr, (phys_bytes ad) );
10075 _PROTOTYPE( int dmardat, (int mode, int delay) );
10076 _PROTOTYPE( void dmawdat, (int mode, int data, int delay) );
10077 _PROTOTYPE( void dmawcmd, (int data, unsigned mode) );
10078 _PROTOTYPE( void dmacomm, (int mode, int data, int delay) );
10079 _PROTOTYPE( int dmastat, (int mode, int delay) );
10080
10081 /* stdskclk.c */
10082 _PROTOTYPE( int do_xbms, (phys_bytes address, int count, int rw, int minor) );
10083
10084 /* stkbd.c */
10085 _PROTOTYPE( void kbdint, (void) );
10086 _PROTOTYPE( void kb_timer, (void) );
10087 _PROTOTYPE( int kb_read, (int minor, char **bufindirect) );
10088 _PROTOTYPE( void kb_init, (int minor) );
10089
10090 /* stshadow.c */
10091 _PROTOTYPE( void mkshadow, (struct proc *p, phys_clicks c2) );
10092 _PROTOTYPE( void rmshadow, (struct proc *p, phys_clicks *basep,
10093 phys_clicks *sizep) );
10094 _PROTOTYPE( void unshadow, (struct proc *p) );
10095
10096 /* stvdu.c */
10097 _PROTOTYPE( void flush, (struct tty *tp) );
10098 _PROTOTYPE( void console, (struct tty *tp) );
10099 _PROTOTYPE( void out_char, (struct tty *tp, int c) );
10100 _PROTOTYPE( void scr_init, (int minor) );
10101 _PROTOTYPE( void vduswitch, (struct tty *tp) );
10102 _PROTOTYPE( void vdusetup, (unsigned int vres, char *vram,
10103 unsigned short *vrgb) );
10104 _PROTOTYPE( void vbl, (void) );
10105 _PROTOTYPE( int vdu_loadfont, (message *m_ptr) );
10106
10107 /* stwini.c */
10108 _PROTOTYPE( int wini_open, (message *mp) );
10109 _PROTOTYPE( int wini_rdwt, (message *mp) );
10110 _PROTOTYPE( int wini_hvrdwt, (message *mp) );
10111 _PROTOTYPE( int wini_transfer, (int rw, int pnr, int minor,
10112 long pos, int count, vir_bytes vadr) );
10113 _PROTOTYPE( int wini_ioctl, (message *mp) );
10114 _PROTOTYPE( int wini_close, (message *mp) );
10115
10116 /* stacsi.c */
10117 _PROTOTYPE( int acsi_cmd, (int drive, unsigned char *cmd, int cmdlen,
10118 phys_bytes address, phys_bytes data_len, int rw) );
10119
.Ep 108 src/kernel/proto.h
10120 /* stscsi.c */
10121 _PROTOTYPE( void scsi_task, (void) );
10122 _PROTOTYPE( void scsidmaint, (void) );
10123 _PROTOTYPE( void scsiint, (void) );
10124 _PROTOTYPE( int scsi_cmd, (int drive, unsigned char *cmd, int cmdlen,
10125 phys_bytes address, phys_bytes data_len, int rw) );
10126
10127 /* klib68k.s */
10128 _PROTOTYPE( void flipclicks, (phys_clicks c1, phys_clicks c2, phys_clicks n) );
10129 _PROTOTYPE( void copyclicks, (phys_clicks src, phys_clicks dest,
10130 phys_clicks nclicks) );
10131 _PROTOTYPE( void zeroclicks, (phys_clicks dest, phys_clicks nclicks) );
10132 _PROTOTYPE( void phys_copy, (phys_bytes src, phys_bytes dest, phys_bytes n) );
10133
10134 /* stdskclks.s */
10135 _PROTOTYPE( int rd1byte, (void) );
10136 _PROTOTYPE( int wr1byte, (int) );
10137 _PROTOTYPE( long getsupra, (void) );
10138 _PROTOTYPE( long geticd, (void) );
10139
10140 /* mpx.s */
10141 _PROTOTYPE( int lock, (void) );
10142 _PROTOTYPE( void unlock, (void) );
10143 _PROTOTYPE( void restore, (int oldsr) );
10144 _PROTOTYPE( void reboot, (void) );
10145 _PROTOTYPE( int test_and_set, (char *flag) );
10146 _PROTOTYPE( unsigned long get_mem_size, (char *start_addr) );
10147
10148 /* stprint.c */
10149 #ifdef DEBOUT
10150 _PROTOTYPE( void prtc, (int c) );
10151 #endif
10152
10153 #ifdef FPP
10154 /* fpp.c */
10155 _PROTOTYPE( void fppinit, (void) );
10156 _PROTOTYPE( void fpp_new_state, (struct proc *rp) );
10157 _PROTOTYPE( void fpp_save, (struct proc *rp, struct cpu_state *p) );
10158 _PROTOTYPE( struct cpu_state *fpp_restore, (struct proc *rp) );
10159
10160 /* fpps.s */
10161 _PROTOTYPE( void _fppsave, (struct state_frame *p) );
10162 _PROTOTYPE( void _fppsavereg, (struct fpp_model *p) );
10163 _PROTOTYPE( void _fpprestore, (struct state_frame *p) );
10164 _PROTOTYPE( void _fpprestreg, (struct fpp_model *p) );
10165 #endif
10166
10167 #if (SHADOWING == 0)
10168 /* pmmu.c */
10169 _PROTOTYPE(void pmmuinit , (void) );
10170 _PROTOTYPE(void pmmu_init_proc , (struct proc *rp ) );
10171 _PROTOTYPE(void pmmu_restore , (struct proc *rp ) );
10172 _PROTOTYPE(void pmmu_delete , (struct proc *rp ) );
10173 _PROTOTYPE(void pmmu_flush , (struct proc *rp ) );
10174 #endif
10175
10176 #endif /* (CHIP == M68000) */
10177
10178 #endif /* PROTO_H */
.Op 109 src/kernel/sb16.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/sb16.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10200 #ifndef SB16_H
10201 #define SB16_H
10202
10203 #define SB_DEBUG 0 /* 1 = print debug info */
10204 #define SB_DEBUG_2 0 /* 1 = print more debug info */
10205
10206 #define SB_TIMEOUT 32000 /* timeout count */
10207
10208 /* IRQ, base address and DMA channels */
10209 #define SB_IRQ 5
10210 #define SB_BASE_ADDR 0x220 /* 0x210, 0x220, 0x230, 0x240,
10211 * 0x250, 0x260, 0x280
10212 */
10213 #define SB_DMA_8 1 /* 0, 1, 3 */
10214 #define SB_DMA_16 5 /* 5, 6, 7 */
10215 #if _WORD_SIZE == 2
10216 #define DMA_SIZE 8192 /* Dma buffer MUST BE MULTIPLE OF 2 */
10217 #else
10218 #define DMA_SIZE 32768 /* Dma buffer MUST BE MULTIPLE OF 2 */
10219 #endif
10220
10221 /* Some defaults for the DSP */
10222 #define DEFAULT_SPEED 22050 /* Sample rate */
10223 #define DEFAULT_BITS 8 /* Nr. of bits */
10224 #define DEFAULT_SIGN 0 /* 0 = unsigned, 1 = signed */
10225 #define DEFAULT_STEREO 0 /* 0 = mono, 1 = stereo */
10226
10227 /* DMA port addresses */
10228 #define DMA8_ADDR ((SB_DMA_8 & 3) << 1) + 0x00
10229 #define DMA8_COUNT ((SB_DMA_8 & 3) << 1) + 0x01
10230 #define DMA8_MASK 0x0A
10231 #define DMA8_MODE 0x0B
10232 #define DMA8_CLEAR 0x0C
10233
10234
10235 /* If after this preprocessing stuff DMA8_PAGE is not defined
10236 * the 8-bit DMA channel specified is not valid
10237 */
10238 #if SB_DMA_8 == 0
10239 # define DMA8_PAGE 0x87
10240 #else
10241 # if SB_DMA_8 == 1
10242 # define DMA8_PAGE 0x83
10243 # else
10244 # if SB_DMA_8 == 3
10245 # define DMA8_PAGE 0x82
10246 # endif
10247 # endif
10248 #endif
10249
10250
10251 #define DMA16_ADDR ((SB_DMA_16 & 3) << 2) + 0xC0
10252 #define DMA16_COUNT ((SB_DMA_16 & 3) << 2) + 0xC2
10253 #define DMA16_MASK 0xD4
10254 #define DMA16_MODE 0xD6
.Ep 110 src/kernel/sb16.h
10255 #define DMA16_CLEAR 0xD8
10256
10257
10258 /* If after this preprocessing stuff DMA16_PAGE is not defined
10259 * the 16-bit DMA channel specified is not valid
10260 */
10261 #if SB_DMA_16 == 5
10262 # define DMA16_PAGE 0x8B
10263 #else
10264 # if SB_DMA_16 == 6
10265 # define DMA16_PAGE 0x89
10266 # else
10267 # if SB_DMA_16 == 7
10268 # define DMA16_PAGE 0x8A
10269 # endif
10270 # endif
10271 #endif
10272
10273
10274 /* DMA modes */
10275 #define DMA16_AUTO_PLAY 0x58 + (SB_DMA_16 & 3)
10276 #define DMA16_AUTO_REC 0x54 + (SB_DMA_16 & 3)
10277 #define DMA8_AUTO_PLAY 0x58 + SB_DMA_8
10278 #define DMA8_AUTO_REC 0x54 + SB_DMA_8
10279
10280
10281 /* IO ports for soundblaster */
10282 #define DSP_RESET 0x6 + SB_BASE_ADDR
10283 #define DSP_READ 0xA + SB_BASE_ADDR
10284 #define DSP_WRITE 0xC + SB_BASE_ADDR
10285 #define DSP_COMMAND 0xC + SB_BASE_ADDR
10286 #define DSP_STATUS 0xC + SB_BASE_ADDR
10287 #define DSP_DATA_AVL 0xE + SB_BASE_ADDR
10288 #define DSP_DATA16_AVL 0xF + SB_BASE_ADDR
10289 #define MIXER_REG 0x4 + SB_BASE_ADDR
10290 #define MIXER_DATA 0x5 + SB_BASE_ADDR
10291 #define OPL3_LEFT 0x0 + SB_BASE_ADDR
10292 #define OPL3_RIGHT 0x2 + SB_BASE_ADDR
10293 #define OPL3_BOTH 0x8 + SB_BASE_ADDR
10294
10295
10296 /* DSP Commands */
10297 #define DSP_INPUT_RATE 0x42 /* set input sample rate */
10298 #define DSP_OUTPUT_RATE 0x41 /* set output sample rate */
10299 #define DSP_CMD_SPKON 0xD1 /* set speaker on */
10300 #define DSP_CMD_SPKOFF 0xD3 /* set speaker off */
10301 #define DSP_CMD_DMA8HALT 0xD0 /* halt DMA 8-bit operation */
10302 #define DSP_CMD_DMA8CONT 0xD4 /* continue DMA 8-bit operation */
10303 #define DSP_CMD_DMA16HALT 0xD5 /* halt DMA 16-bit operation */
10304 #define DSP_CMD_DMA16CONT 0xD6 /* continue DMA 16-bit operation */
10305 #define DSP_GET_VERSION 0xE1 /* get version number of DSP */
10306 #define DSP_CMD_8BITAUTO_IN 0xCE /* 8 bit auto-initialized input */
10307 #define DSP_CMD_8BITAUTO_OUT 0xC6 /* 8 bit auto-initialized output */
10308 #define DSP_CMD_16BITAUTO_IN 0xBE /* 16 bit auto-initialized input */
10309 #define DSP_CMD_16BITAUTO_OUT 0xB6 /* 16 bit auto-initialized output */
10310 #define DSP_CMD_IRQREQ8 0xF2 /* Interrupt request 8 bit */
10311 #define DSP_CMD_IRQREQ16 0xF3 /* Interrupt request 16 bit */
10312
10313
10314 /* DSP Modes */
.Op 111 src/kernel/sb16.h
10315 #define DSP_MODE_MONO_US 0x00 /* Mono unsigned */
10316 #define DSP_MODE_MONO_S 0x10 /* Mono signed */
10317 #define DSP_MODE_STEREO_US 0x20 /* Stereo unsigned */
10318 #define DSP_MODE_STEREO_S 0x30 /* Stereo signed */
10319
10320
10321 /* MIXER commands */
10322 #define MIXER_RESET 0x00 /* Reset */
10323 #define MIXER_DAC_LEVEL 0x04 /* Used for detection only */
10324 #define MIXER_MASTER_LEFT 0x30 /* Master volume left */
10325 #define MIXER_MASTER_RIGHT 0x31 /* Master volume right */
10326 #define MIXER_DAC_LEFT 0x32 /* Dac level left */
10327 #define MIXER_DAC_RIGHT 0x33 /* Dac level right */
10328 #define MIXER_FM_LEFT 0x34 /* Fm level left */
10329 #define MIXER_FM_RIGHT 0x35 /* Fm level right */
10330 #define MIXER_CD_LEFT 0x36 /* Cd audio level left */
10331 #define MIXER_CD_RIGHT 0x37 /* Cd audio level right */
10332 #define MIXER_LINE_LEFT 0x38 /* Line in level left */
10333 #define MIXER_LINE_RIGHT 0x39 /* Line in level right */
10334 #define MIXER_MIC_LEVEL 0x3A /* Microphone level */
10335 #define MIXER_PC_LEVEL 0x3B /* Pc speaker level */
10336 #define MIXER_OUTPUT_CTRL 0x3C /* Output control */
10337 #define MIXER_IN_LEFT 0x3D /* Input control left */
10338 #define MIXER_IN_RIGHT 0x3E /* Input control right */
10339 #define MIXER_GAIN_IN_LEFT 0x3F /* Input gain control left */
10340 #define MIXER_GAIN_IN_RIGHT 0x40 /* Input gain control right */
10341 #define MIXER_GAIN_OUT_LEFT 0x41 /* Output gain control left */
10342 #define MIXER_GAIN_OUT_RIGHT 0x42 /* Output gain control rigth */
10343 #define MIXER_AGC 0x43 /* Automatic gain control */
10344 #define MIXER_TREBLE_LEFT 0x44 /* Treble left */
10345 #define MIXER_TREBLE_RIGHT 0x45 /* Treble right */
10346 #define MIXER_BASS_LEFT 0x46 /* Bass left */
10347 #define MIXER_BASS_RIGHT 0x47 /* Bass right */
10348 #define MIXER_SET_IRQ 0x80 /* Set irq number */
10349 #define MIXER_SET_DMA 0x81 /* Set DMA channels */
10350 #define MIXER_IRQ_STATUS 0x82 /* Irq status */
10351
10352 /* Mixer constants */
10353 #define MIC 0x01 /* Microphone */
10354 #define CD_RIGHT 0x02
10355 #define CD_LEFT 0x04
10356 #define LINE_RIGHT 0x08
10357 #define LINE_LEFT 0x10
10358 #define FM_RIGHT 0x20
10359 #define FM_LEFT 0x40
10360
10361 /* DSP constants */
10362 #define DSP_MAX_SPEED 44100 /* Max sample speed in KHz */
10363 #define DSP_MIN_SPEED 4000 /* Min sample speed in KHz */
10364 #define DSP_MAX_FRAGMENT_SIZE DMA_SIZE /* Maximum fragment size */
10365 #define DSP_MIN_FRAGMENT_SIZE 1024 /* Minimum fragment size */
10366
10367
10368 /* Number of bytes you can DMA before hitting a 64K boundary: */
10369 #define dma_bytes_left(phys)
10370 ((unsigned) (sizeof(int) == 2 ? 0 : 0x10000) - (unsigned) ((phys) & 0xFFFF))
10371
10372
10373 /* Function prototypes used by mixer and dsp */
10374 _PROTOTYPE(int mixer_set, (int reg, int data));
.Ep 112 src/kernel/sb16.h
10375
10376 #endif /* SB16_H */
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/sconst.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10400 ! Miscellaneous constants used in assembler code.
10401 W = _WORD_SIZE ! Machine word size.
10402
10403 ! Offsets in struct proc. They MUST match proc.h.
10404 P_STACKBASE = 0
10405 #if _WORD_SIZE == 2
10406 ESREG = P_STACKBASE
10407 #else
10408 GSREG = P_STACKBASE
10409 FSREG = GSREG + 2 ! 386 introduces FS and GS segments
10410 ESREG = FSREG + 2
10411 #endif
10412 DSREG = ESREG + 2
10413 DIREG = DSREG + 2
10414 SIREG = DIREG + W
10415 BPREG = SIREG + W
10416 STREG = BPREG + W ! hole for another SP
10417 BXREG = STREG + W
10418 DXREG = BXREG + W
10419 CXREG = DXREG + W
10420 AXREG = CXREG + W
10421 RETADR = AXREG + W ! return address for save() call
10422 PCREG = RETADR + W
10423 CSREG = PCREG + W
10424 PSWREG = CSREG + W
10425 SPREG = PSWREG + W
10426 SSREG = SPREG + W
10427 P_STACKTOP = SSREG + W
10428 P_LDT_SEL = P_STACKTOP
10429 P_LDT = P_LDT_SEL + W
10430
10431 #if _WORD_SIZE == 2
10432 Msize = 12 ! size of a message in 16-bit words
10433 #else
10434 Msize = 9 ! size of a message in 32-bit words
10435 #endif
.Op 113 src/kernel/tty.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/tty.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10500 /* tty.h - Terminals */
10501
10502 #define TTY_IN_BYTES 256 /* tty input queue size */
10503 #define TAB_SIZE 8 /* distance between tab stops */
10504 #define TAB_MASK 7 /* mask to compute a tab stop position */
10505
10506 #define ESC '33' /* escape */
10507
10508 #define O_NOCTTY 00400 /* from <fcntl.h>, or cc will choke */
10509 #define O_NONBLOCK 04000
10510
10511 typedef _PROTOTYPE( void (*devfun_t), (struct tty *tp) );
10512 typedef _PROTOTYPE( void (*devfunarg_t), (struct tty *tp, int c) );
10513
10514 typedef struct tty {
10515 int tty_events; /* set when TTY should inspect this line */
10516
10517 /* Input queue. Typed characters are stored here until read by a program. */
10518 u16_t *tty_inhead; /* pointer to place where next char goes */
10519 u16_t *tty_intail; /* pointer to next char to be given to prog */
10520 int tty_incount; /* # chars in the input queue */
10521 int tty_eotct; /* number of "line breaks" in input queue */
10522 devfun_t tty_devread; /* routine to read from low level buffers */
10523 devfun_t tty_icancel; /* cancel any device input */
10524 int tty_min; /* minimum requested #chars in input queue */
10525 clock_t tty_time; /* time when the input is available */
10526 struct tty *tty_timenext; /* for a list of ttys with active timers */
10527
10528 /* Output section. */
10529 devfun_t tty_devwrite; /* routine to start actual device output */
10530 devfunarg_t tty_echo; /* routine to echo characters input */
10531 devfun_t tty_ocancel; /* cancel any ongoing device output */
10532 devfun_t tty_break; /* let the device send a break */
10533
10534 /* Terminal parameters and status. */
10535 int tty_position; /* current position on the screen for echoing */
10536 char tty_reprint; /* 1 when echoed input messed up, else 0 */
10537 char tty_escaped; /* 1 when LNEXT (^V) just seen, else 0 */
10538 char tty_inhibited; /* 1 when STOP (^S) just seen (stops output) */
10539 char tty_pgrp; /* slot number of controlling process */
10540 char tty_openct; /* count of number of opens of this tty */
10541
10542 /* Information about incomplete I/O requests is stored here. */
10543 char tty_inrepcode; /* reply code, TASK_REPLY or REVIVE */
10544 char tty_incaller; /* process that made the call (usually FS) */
10545 char tty_inproc; /* process that wants to read from tty */
10546 vir_bytes tty_in_vir; /* virtual address where data is to go */
10547 int tty_inleft; /* how many chars are still needed */
10548 int tty_incum; /* # chars input so far */
10549 char tty_outrepcode; /* reply code, TASK_REPLY or REVIVE */
10550 char tty_outcaller; /* process that made the call (usually FS) */
10551 char tty_outproc; /* process that wants to write to tty */
10552 vir_bytes tty_out_vir; /* virtual address where data comes from */
10553 int tty_outleft; /* # chars yet to be output */
10554 int tty_outcum; /* # chars output so far */
.Ep 114 src/kernel/tty.h
10555 char tty_iocaller; /* process that made the call (usually FS) */
10556 char tty_ioproc; /* process that wants to do an ioctl */
10557 int tty_ioreq; /* ioctl request code */
10558 vir_bytes tty_iovir; /* virtual address of ioctl buffer */
10559
10560 /* Miscellaneous. */
10561 devfun_t tty_ioctl; /* set line speed, etc. at the device level */
10562 devfun_t tty_close; /* tell the device that the tty is closed */
10563 void *tty_priv; /* pointer to per device private data */
10564 struct termios tty_termios; /* terminal attributes */
10565 struct winsize tty_winsize; /* window size (#lines and #columns) */
10566
10567 u16_t tty_inbuf[TTY_IN_BYTES];/* tty input buffer */
10568 } tty_t;
10569
10570 EXTERN tty_t tty_table[NR_CONS+NR_RS_LINES+NR_PTYS];
10571
10572 /* Values for the fields. */
10573 #define NOT_ESCAPED 0 /* previous character is not LNEXT (^V) */
10574 #define ESCAPED 1 /* previous character was LNEXT (^V) */
10575 #define RUNNING 0 /* no STOP (^S) has been typed to stop output */
10576 #define STOPPED 1 /* STOP (^S) has been typed to stop output */
10577
10578 /* Fields and flags on characters in the input queue. */
10579 #define IN_CHAR 0x00FF /* low 8 bits are the character itself */
10580 #define IN_LEN 0x0F00 /* length of char if it has been echoed */
10581 #define IN_LSHIFT 8 /* length = (c & IN_LEN) >> IN_LSHIFT */
10582 #define IN_EOT 0x1000 /* char is a line break (^D, LF) */
10583 #define IN_EOF 0x2000 /* char is EOF (^D), do not return to user */
10584 #define IN_ESC 0x4000 /* escaped by LNEXT (^V), no interpretation */
10585
10586 /* Times and timeouts. */
10587 #define TIME_NEVER ((clock_t) -1 < 0 ? (clock_t) LONG_MAX : (clock_t) -1)
10588 #define force_timeout() ((void) (tty_timeout = 0))
10589
10590 EXTERN tty_t *tty_timelist; /* list of ttys with active timers */
10591
10592 /* Number of elements and limit of a buffer. */
10593 #define buflen(buf) (sizeof(buf) / sizeof((buf)[0]))
10594 #define bufend(buf) ((buf) + buflen(buf))
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/type.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10600 #ifndef TYPE_H
10601 #define TYPE_H
10602
10603 typedef _PROTOTYPE( void task_t, (void) );
10604 typedef _PROTOTYPE( int (*rdwt_t), (message *m_ptr) );
10605 typedef _PROTOTYPE( void (*watchdog_t), (void) );
10606
10607 struct tasktab {
10608 task_t *initial_pc;
10609 int stksize;
.Op 115 src/kernel/type.h
10610 char name[8];
10611 };
10612
10613 struct memory {
10614 phys_clicks base;
10615 phys_clicks size;
10616 };
10617
10618 /* Administration for clock polling. */
10619 struct milli_state {
10620 unsigned long accum_count; /* accumulated clock ticks */
10621 unsigned prev_count; /* previous clock value */
10622 };
10623
10624 #if (CHIP == INTEL)
10625 typedef unsigned port_t;
10626 typedef unsigned segm_t;
10627 typedef unsigned reg_t; /* machine register */
10628
10629 /* The stack frame layout is determined by the software, but for efficiency
10630 * it is laid out so the assembly code to use it is as simple as possible.
10631 * 80286 protected mode and all real modes use the same frame, built with
10632 * 16-bit registers. Real mode lacks an automatic stack switch, so little
10633 * is lost by using the 286 frame for it. The 386 frame differs only in
10634 * having 32-bit registers and more segment registers. The same names are
10635 * used for the larger registers to avoid differences in the code.
10636 */
10637 struct stackframe_s { /* proc_ptr points here */
10638 #if _WORD_SIZE == 4
10639 u16_t gs; /* last item pushed by save */
10640 u16_t fs; /* ^ */
10641 #endif
10642 u16_t es; /* | */
10643 u16_t ds; /* | */
10644 reg_t di; /* di through cx are not accessed in C */
10645 reg_t si; /* order is to match pusha/popa */
10646 reg_t fp; /* bp */
10647 reg_t st; /* hole for another copy of sp */
10648 reg_t bx; /* | */
10649 reg_t dx; /* | */
10650 reg_t cx; /* | */
10651 reg_t retreg; /* ax and above are all pushed by save */
10652 reg_t retadr; /* return address for assembly code save() */
10653 reg_t pc; /* ^ last item pushed by interrupt */
10654 reg_t cs; /* | */
10655 reg_t psw; /* | */
10656 reg_t sp; /* | */
10657 reg_t ss; /* these are pushed by CPU during interrupt */
10658 };
10659
10660 struct segdesc_s { /* segment descriptor for protected mode */
10661 u16_t limit_low;
10662 u16_t base_low;
10663 u8_t base_middle;
10664 u8_t access; /* |P|DL|1|X|E|R|A| */
10665 #if _WORD_SIZE == 4
10666 u8_t granularity; /* |G|X|0|A|LIMT| */
10667 u8_t base_high;
10668 #else
10669 u16_t reserved;
.Ep 116 src/kernel/type.h
10670 #endif
10671 };
10672
10673 typedef _PROTOTYPE( int (*irq_handler_t), (int irq) );
10674
10675 #endif /* (CHIP == INTEL) */
10676
10677 #if (CHIP == M68000)
10678 typedef _PROTOTYPE( void (*dmaint_t), (void) );
10679
10680 typedef u32_t reg_t; /* machine register */
10681
10682 /* The name and fields of this struct were chosen for PC compatibility. */
10683 struct stackframe_s {
10684 reg_t retreg; /* d0 */
10685 reg_t d1;
10686 reg_t d2;
10687 reg_t d3;
10688 reg_t d4;
10689 reg_t d5;
10690 reg_t d6;
10691 reg_t d7;
10692 reg_t a0;
10693 reg_t a1;
10694 reg_t a2;
10695 reg_t a3;
10696 reg_t a4;
10697 reg_t a5;
10698 reg_t fp; /* also known as a6 */
10699 reg_t sp; /* also known as a7 */
10700 reg_t pc;
10701 u16_t psw;
10702 u16_t dummy; /* make size multiple of reg_t for system.c */
10703 };
10704
10705 struct fsave {
10706 struct cpu_state {
10707 u16_t i_format;
10708 u32_t i_addr;
10709 u16_t i_state[4];
10710 } cpu_state;
10711 struct state_frame {
10712 u8_t frame_type;
10713 u8_t frame_size;
10714 u16_t reserved;
10715 u8_t frame[212];
10716 } state_frame;
10717 struct fpp_model {
10718 u32_t fpcr;
10719 u32_t fpsr;
10720 u32_t fpiar;
10721 struct fpN {
10722 u32_t high;
10723 u32_t low;
10724 u32_t mid;
10725 } fpN[8];
10726 } fpp_model;
10727 };
10728 #endif /* (CHIP == M68000) */
10729
.Op 117 src/kernel/type.h
10730 #endif /* TYPE_H */
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/wdeth.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10800 /*
10801 wdeth.h
10802
10803 Created: before Dec 28, 1992 by Philip Homburg
10804 */
10805
10806 #ifndef WDETH_H
10807 #define WDETH_H
10808
10809 /* Western Digital Ethercard Plus, or WD8003E card. */
10810
10811 #define EPL_REG0 0x0 /* Control(write) and status(read) */
10812 #define EPL_REG1 0x1
10813 #define EPL_REG2 0x2
10814 #define EPL_REG3 0x3
10815 #define EPL_REG4 0x4
10816 #define EPL_REG5 0x5
10817 #define EPL_REG6 0x6
10818 #define EPL_REG7 0x7
10819 #define EPL_EA0 0x8 /* Most significant eaddr byte */
10820 #define EPL_EA1 0x9
10821 #define EPL_EA2 0xA
10822 #define EPL_EA3 0xB
10823 #define EPL_EA4 0xC
10824 #define EPL_EA5 0xD /* Least significant eaddr byte */
10825 #define EPL_TLB 0xE
10826 #define EPL_CHKSUM 0xF /* sum from epl_ea0 upto here is 0xFF */
10827 #define EPL_DP8390 0x10 /* NatSemi chip */
10828
10829 #define EPL_MSR EPL_REG0 /* memory select register */
10830 #define EPL_ICR EPL_REG1 /* interface configuration register */
10831 #define EPL_IRR EPL_REG4 /* interrupt request register (IRR) */
10832 #define EPL_790_HWR EPL_REG4 /* '790 hardware support register */
10833 #define EPL_LAAR EPL_REG5 /* LA address register (write only) */
10834 #define EPL_790_ICR EPL_REG6 /* '790 interrupt control register */
10835 #define EPL_GP2 EPL_REG7 /* general purpose register 2 */
10836 #define EPL_790_B EPL_EA3 /* '790 memory register */
10837 #define EPL_790_GCR EPL_EA5 /* '790 General Control Register */
10838
10839 /* Bits in EPL_MSR */
10840 #define E_MSR_MEMADDR 0x3F /* Bits SA18-SA13, SA19 implicit 1 */
10841 #define E_MSR_MENABLE 0x40 /* Memory Enable */
10842 #define E_MSR_RESET 0x80 /* Software Reset */
10843
10844 /* Bits in EPL_ICR */
10845 #define E_ICR_16BIT 0x01 /* 16 bit bus */
10846 #define E_ICR_IR2 0x04 /* bit 2 of encoded IRQ */
10847 #define E_ICR_MEMBIT 0x08 /* 583 mem size mask */
10848
10849 /* Bits in EPL_IRR */
.Ep 118 src/kernel/wdeth.h
10850 #define E_IRR_IR0 0x20 /* bit 0 of encoded IRQ */
10851 #define E_IRR_IR1 0x40 /* bit 1 of encoded IRQ */
10852 #define E_IRR_IEN 0x80 /* enable interrupts */
10853
10854 /* Bits in EPL_LAAR */
10855 #define E_LAAR_A19 0x01 /* address lines for above 1M ram */
10856 #define E_LAAR_A20 0x02 /* address lines for above 1M ram */
10857 #define E_LAAR_A21 0x04 /* address lines for above 1M ram */
10858 #define E_LAAR_A22 0x08 /* address lines for above 1M ram */
10859 #define E_LAAR_A23 0x10 /* address lines for above 1M ram */
10860 #define E_LAAR_SOFTINT 0x20 /* enable software interrupt */
10861 #define E_LAAR_LAN16E 0x40 /* enables 16 bit RAM for LAN */
10862 #define E_LAAR_MEM16E 0x80 /* enables 16 bit RAM for host */
10863
10864 /* Bits and values in EPL_TLB */
10865 #define E_TLB_EB 0x05 /* WD8013EB */
10866 #define E_TLB_E 0x27 /* WD8013 Elite */
10867 #define E_TLB_SMCE 0x29 /* SMC Elite 16 */
10868 #define E_TLB_SMC8216C 0x2B /* SMC 8216 C */
10869
10870 #define E_TLB_REV 0x1F /* revision mask */
10871 #define E_TLB_SOFT 0x20 /* soft config */
10872 #define E_TLB_RAM 0x40 /* extra ram bit */
10873
10874 /* Bits in EPL_790_HWR */
10875 #define E_790_HWR_SWH 0x80 /* switch register set */
10876
10877 /* Bits in EPL_790_ICR */
10878 #define E_790_ICR_EIL 0x01 /* enable interrupts */
10879
10880 /* Bits in EPL_790_GCR when E_790_HWR_SWH is set in EPL_790_HWR */
10881 #define E_790_GCR_IR0 0x04 /* bit 0 of encoded IRQ */
10882 #define E_790_GCR_IR1 0x08 /* bit 1 of encoded IRQ */
10883 #define E_790_GCR_IR2 0x40 /* bit 2 of encoded IRQ */
10884
10885
10886 #define inb_we(dep, reg) (in_byte(dep->de_base_port+reg))
10887 #define outb_we(dep, reg, data) (out_byte(dep->de_base_port+reg, data))
10888
10889 #endif /* WDETH_H */
10890
10891 /*
10892 * $PchHeader: /mount/hd2/minix/sys/kernel/ibm/RCS/wdeth.h,v 1.3 1994/10/31 10:36:29 philip Exp $
10893 */
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/kernel/aha_scsi.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10900 /*
10901 * This file contains the device dependent part of an experimental disk
10902 * and tape driver for the Adaptec 154x SCSI Host Adapter family, written
10903 * by James da Silva (jds@cs.umd.edu).
10904 *
10905 * I wrote this driver using the technical documentation for the AHA available
10906 * from the Adaptec BBS at 1-408-945-7727, and from the SCSI standard drafts
10907 * available on NCR's SCSI BBS at 1-316-636-8700. I suggest you get both
10908 * these documents if you want to understand and hack this code.
10909 *
.Op 119 src/kernel/aha_scsi.c
10910 * This code has been extensively modified by Kees J. Bot (kjb@cs.vu.nl) to
10911 * a point that James will barely recognize it as his. It is completely
10912 * remodeled and doubled in both size and functionality. It is no longer
10913 * considered experimental either.
10914 *
10915 * The supported device numbers are as follows:
10916 * # Name Device
10917 * 0 sd0 disk 0, entire disk
10918 * 1 sd1 disk 0, partition 1
10919 * 2 sd2 disk 0, partition 2
10920 * 3 sd3 disk 0, partition 3
10921 * 4 sd4 disk 0, partition 4
10922 * 5 sd5 disk 1, entire disk
10923 * 6 sd6 disk 1, partition 1
10924 * .. .... ....
10925 * 39 sd39 disk 7, partition 4
10926 *
10927 * 64 nrst0 tape 0, no rewind
10928 * 65 rst0 tape 0, rewind
10929 * 66 nrst1 tape 1, no rewind
10930 * .. .... ....
10931 * 79 rst7 tape 7, rewind
10932 *
10933 * 128 sd1a disk 0, partition 1, subpartition 1
10934 * 129 sd1b disk 0, partition 1, subpartition 2
10935 * ... .... ....
10936 * 255 sd39d disk 7, partition 4, subpartition 4
10937 *
10938 * The translation of device numbers to targets and logical units is very
10939 * simple: The target is the same as the disk or tape number, the logical
10940 * unit is always zero. Devices with logical unit numbers other then zero
10941 * are virtually extinct. If you happen to have such a dinosaur device,
10942 * then you can reprogram (e.g.) sd35 and st7 to target 0, lun 1 from the
10943 * Boot Monitor with 'sd35=0,1'.
10944 *
10945 *
10946 * The file contains one entry point:
10947 *
10948 * aha_scsi_task: main entry when system is brought up
10949 *
10950 *
10951 * Changes:
10952 * 5 May 1992 by Kees J. Bot: device dependent/independent split.
10953 * 7 Jul 1992 by Kees J. Bot: speedup & features.
10954 * 28 Dec 1992 by Kees J. Bot: completely remodeled & virtual memory.
10955 * 18 Sep 1994 by Kees J. Bot: removed "send 2 commands at once" junk.
10956 */
10957 #include "kernel.h"
10958 #include "driver.h"
10959 #include "drvlib.h"
10960 #if ENABLE_ADAPTEC_SCSI
10961 #include <fcntl.h>
10962 #include <sys/ioctl.h>
10963 #include <sys/mtio.h>
10964 #include "assert.h"
10965 INIT_ASSERT
10966
10967
10968 #ifndef AHA_DEBUG
10969 #define AHA_DEBUG 0 /* 1=print all SCSI errors | 2=dump ccb
.Ep 120 src/kernel/aha_scsi.c
10970 * 4=show request | 8=dump scsi cmd
10971 */
10972 #endif
10973
10974 /* AHA-154x port addresses */
10975 #define AHA_BASEREG 0x330 /* default base port address of AHA registers */
10976 #define AHA_CNTLREG aha_basereg+0 /* Control Register - write only */
10977 #define AHA_STATREG aha_basereg+0 /* Status Register - read only */
10978 #define AHA_DATAREG aha_basereg+1 /* Data Register - read/write */
10979 #define AHA_INTRREG aha_basereg+2 /* Interrupt Flags - read only */
10980
10981 /* control register bits */
10982 #define AHA_HRST 0x80 /* bit 7 - Hard Reset */
10983 #define AHA_SRST 0x40 /* bit 6 - Soft Reset */
10984 #define AHA_IRST 0x20 /* bit 5 - Interrupt Reset */
10985 #define AHA_SCRST 0x10 /* bit 4 - SCSI Bus Reset */
10986 /* 0x08 * bit 3 - Reserved (set to 0) */
10987 /* 0x04 * bit 2 - Reserved (set to 0) */
10988 /* 0x02 * bit 1 - Reserved (set to 0) */
10989 /* 0x01 * bit 0 - Reserved (set to 0) */
10990
10991 /* status register bits */
10992 #define AHA_STST 0x80 /* bit 7 - Self Test in Progress */
10993 #define AHA_DIAGF 0x40 /* bit 6 - Internal Diagnostic Failure */
10994 #define AHA_INIT 0x20 /* bit 5 - Mailbox Initialization Required */
10995 #define AHA_IDLE 0x10 /* bit 4 - SCSI Host Adapter Idle */
10996 #define AHA_CDF 0x08 /* bit 3 - Command/Data Out Port Full */
10997 #define AHA_DF 0x04 /* bit 2 - Data In Port Full */
10998 /* 0x02 * bit 1 - Reserved */
10999 #define AHA_INVDCMD 0x01 /* bit 0 - Invalid Host Adapter Command */
11000
11001 /* interrupt flags register bits */
11002 #define AHA_ANYINT 0x80 /* bit 7 - Any Interrupt */
11003 /* 0x40 * bit 6 - Reserved */
11004 /* 0x20 * bit 5 - Reserved */
11005 /* 0x10 * bit 4 - Reserved */
11006 #define AHA_SCRD 0x08 /* bit 3 - SCSI Reset Detected */
11007 #define AHA_HACC 0x04 /* bit 2 - Host Adapter Command Complete */
11008 #define AHA_MBOE 0x02 /* bit 1 - Mailbox Out Empty */
11009 #define AHA_MBIF 0x01 /* bit 0 - Mailbox In Full */
11010
11011 /* AHA board models */
11012 #define AHA1540 0x30
11013 #define AHA1540A 0x41
11014 #define AHA1640 0x42
11015 #define AHA1740 0x43
11016 #define AHA1540C 0x44
11017 #define AHA1540CF 0x45
11018 #define BT545 0x20 /* BusLogic */
11019
11020 /* AHA Command Codes */
11021 #define AHACOM_INITBOX 0x01 /* Mailbox Initialization */
11022 #define AHACOM_STARTSCSI 0x02 /* Start SCSI Command */
11023 #define AHACOM_HAINQUIRY 0x04 /* Host Adapter Inquiry */
11024 #define AHACOM_SETIMEOUT 0x06 /* Set SCSI selection time out value */
11025 #define AHACOM_BUSON 0x07 /* Set DMA bus on time */
11026 #define AHACOM_BUSOFF 0x08 /* Set DMA bus off time */
11027 #define AHACOM_SPEED 0x09 /* Set DMA transfer speed */
11028 #define AHACOM_INSTALLED 0x0A /* Return Installed Devices */
11029 #define AHACOM_GETCONFIG 0x0B /* Return Configuration Data */
.Op 121 src/kernel/aha_scsi.c
11030 #define AHACOM_GETSETUP 0x0D /* Return Setup Data */
11031 #define AHACOM_EXTBIOS 0x28 /* Return Extended BIOS Info */
11032 #define AHACOM_MBOX_ENABLE 0x29 /* Enable Mailbox Interface */
11033
11034 /* AHA Mailbox Out Codes */
11035 #define AHA_MBOXFREE 0x00 /* Mailbox is Free */
11036 #define AHA_MBOXSTART 0x01 /* Start Command */
11037 #define AHA_MBOXABORT 0x02 /* Abort Command */
11038 /* AHA Mailbox In Codes */
11039 #define AHA_MBOXOK 0x01 /* Command Completed Successfully */
11040 #define AHA_MBOXERR 0x04 /* Command Completed with Error */
11041
11042
11043 /* Basic types */
11044 typedef unsigned char byte;
11045 typedef byte big16[2]; /* 16 bit big-endian values */
11046 typedef byte big24[3]; /* AHA uses 24 bit, big-endian values! */
11047 typedef byte big32[4]; /* Group 1 SCSI commands use 32 bit big-endian values */
11048
11049 /* AHA Mailbox structure */
11050 typedef struct {
11051 byte status; /* Command or Status byte */
11052 big24 ccbptr; /* pointer to Command Control Block */
11053 } mailbox_t;
11054
11055 /* SCSI Group 0 Command Descriptor Block structure */
11056 typedef union {
11057 struct { /* Disk i/o commands */
11058 byte d_scsi_op; /* SCSI Operation Code */
11059 # define SCSI_UNITRDY 0x00 /* Test Unit Ready */
11060 # define SCSI_REWIND 0x01 /* Rewind */
11061 # define SCSI_REQSENSE 0x03 /* Request sense */
11062 # define SCSI_RDLIMITS 0x05 /* Read Block Limits Opcode */
11063 # define SCSI_READ 0x08 /* Group 0 Read Opcode */
11064 # define SCSI_WRITE 0x0A /* Group 0 Write Opcode */
11065 # define SCSI_WREOF 0x10 /* Write File Marks */
11066 # define SCSI_SPACE 0x11 /* Space over filemarks/blocks */
11067 # define SCSI_INQUIRY 0x12 /* Group 0 Inquiry Opcode */
11068 # define SCSI_MDSELECT 0x15 /* Group 0 Mode Select Opcode */
11069 # define SCSI_ERASE 0x19 /* Erase Tape */
11070 # define SCSI_MDSENSE 0x1A /* Group 0 Mode Sense Opcode */
11071 # define SCSI_STRTSTP 0x1B /* Start/Stop */
11072 # define SCSI_LOADUNLD 0x1B /* Load/Unload */
11073 big24 d_lba; /* LUN and logical block address */
11074 byte d_nblocks; /* Transfer size in blocks */
11075 byte d_control; /* Reserved and link bit fields, set to 0 */
11076 } d;
11077 struct { /* Tape i/o commands */
11078 byte t_scsi_op; /* SCSI Operation Code */
11079 byte t_fixed; /* Fixed length? */
11080 big24 t_trlength; /* Transfer length */
11081 byte t_control; /* reserved and link bit fields, set to 0 */
11082 } t;
11083 } cdb0_t;
11084 #define scsi_op d.d_scsi_op
11085 #define lba d.d_lba
11086 #define nblocks d.d_nblocks
11087 #define fixed t.t_fixed
11088 #define trlength t.t_trlength
11089 #define control d.d_control
.Ep 122 src/kernel/aha_scsi.c
11090
11091 /* SCSI Group 1 Command Descriptor Block structure */
11092 typedef union {
11093 struct { /* Disk i/o commands */
11094 byte d_scsi_op; /* SCSI Operation Code */
11095 # define SCSI_CAPACITY 0x25 /* Read Capacity */
11096 # define SCSI_READ1 0x28 /* Group 1 Read Opcode */
11097 # define SCSI_WRITE1 0x2A /* Group 1 Write Opcode */
11098 byte d_lunra; /* LUN etc. */
11099 big32 d_lba; /* Logical Block Address */
11100 byte reserved;
11101 big16 d_nblocks; /* transfer size in blocks */
11102 byte d_control; /* reserved and link bit fields, set to 0 */
11103 } d;
11104 } cdb1_t;
11105 #define lunra d.d_lunra
11106
11107 /* SCSI Request Sense Information */
11108 typedef struct {
11109 byte errc; /* Error Code, Error Class, and Valid bit */
11110 byte segnum; /* Segment Number */
11111 byte key; /* Sense Key */
11112 # define sense_key(key) (key & 0x0F) /* the key portion */
11113 # define sense_ili(key) (key & 0x20) /* illegal block size */
11114 # define sense_eom(key) (key & 0x40) /* end-of-media */
11115 # define sense_eof(key) (key & 0x80) /* filemark reached */
11116 big32 info; /* sense info */
11117 byte len; /* additional length */
11118 big32 comspec; /* command specific info */
11119 byte add_code; /* additional sense code */
11120 byte add_qual; /* additional sense code qualifier */
11121 } sense_t;
11122
11123 /* Interesting SCSI sense key types. */
11124 #define SENSE_NO_SENSE 0x00
11125 #define SENSE_RECOVERED 0x01
11126 #define SENSE_NOT_READY 0x02
11127 #define SENSE_HARDWARE 0x04
11128 #define SENSE_UNIT_ATT 0x06
11129 #define SENSE_BLANK_CHECK 0x08
11130 #define SENSE_VENDOR 0x09
11131 #define SENSE_ABORTED_CMD 0x0B
11132
11133 /* SCSI Inquiry Information */
11134 typedef struct {
11135 byte devtype; /* Peripheral Device Type */
11136 # define SCSI_DEVDISK 0 /* Direct-access */
11137 # define SCSI_DEVTAPE 1 /* Sequential-access */
11138 # define SCSI_DEVPRN 2 /* Printer */
11139 # define SCSI_DEVCPU 3 /* Processor */
11140 # define SCSI_DEVWORM 4 /* Write-Once Read-Multiple device */
11141 # define SCSI_DEVCDROM 5 /* Read-Only Direct-access */
11142 # define SCSI_DEVSCANNER 6 /* Scanner */
11143 # define SCSI_DEVOPTICAL 7 /* Optical Memory */
11144 # define SCSI_DEVJUKEBOX 8 /* Medium Changer device */
11145 # define SCSI_DEVCOMM 9 /* Communications device */
11146 # define SCSI_DEVMAX 9 /* Last device type we know about */
11147 # define SCSI_DEVUNKNOWN 10 /* If we do not know or care. */
11148 byte devqual; /* Device-Type Qualifier */
11149 # define scsi_rmb(d) (((d) & 0x80) != 0) /* Removable? */
.Op 123 src/kernel/aha_scsi.c
11150 byte stdver; /* Version of standard compliance */
11151 # define scsi_isover(v) (((v) & 0xC0) >> 6) /* ISO version */
11152 # define scsi_ecmaver(v) (((v) & 0x38) >> 3) /* ECMA version */
11153 # define scsi_ansiver(v) ((v) & 0x07) /* ANSI version */
11154 byte format; /* Response data format */
11155 byte len; /* length of remaining info */
11156 byte reserved[2];
11157 byte flags;
11158 # define scsi_sync(f) (((f) & 0x10) != 0) /* Sync SCSI? */
11159 char vendor[8]; /* Vendor name */
11160 char product[16]; /* Product name */
11161 char revision[4]; /* Revision level */
11162 char extra[20]; /* Vendor specific */
11163 } inquiry_t;
11164
11165 /* AHA Command Control Block structure */
11166 typedef struct {
11167 byte opcode; /* Operation Code */
11168 # define CCB_INIT 0x00 /* SCSI Initiator Command */
11169 # define CCB_TARGET 0x01 /* Target Mode Command */
11170 # define CCB_SCATTER 0x02 /* Initiator with scatter/gather */
11171 byte addrcntl; /* Address and Direction Control: */
11172 # define ccb_scid(id) (((id)<<5)&0xE0) /* SCSI ID field */
11173 # define CCB_OUTCHECK 0x10 /* Outbound length check */
11174 # define CCB_INCHECK 0x08 /* Inbound length check */
11175 # define CCB_NOCHECK 0x00 /* No length check */
11176 # define ccb_lun(lun) ((lun)&0x07) /* SCSI LUN field */
11177 byte cmdlen; /* SCSI Command Length (6 for Group 0) */
11178 byte senselen; /* Request/Disable Sense, Allocation Length */
11179 # define CCB_SENSEREQ 0x0E /* Request Sense, 14 bytes */
11180 # define CCB_SENSEOFF 0x01 /* Disable Request Sense */
11181 big24 datalen; /* Data Length: 3 bytes, big endian */
11182 big24 dataptr; /* Data Pointer: 3 bytes, big endian */
11183 big24 linkptr; /* Link Pointer: 3 bytes, big endian */
11184 byte linkid; /* Command Linking Identifier */
11185 byte hastat; /* Host Adapter Status */
11186 # define HST_TIMEOUT 0x11 /* SCSI selection timeout */
11187 byte tarstat; /* Target Device Status */
11188 # define TST_CHECK 0x02 /* Check status in sense[] */
11189 # define TST_LUNBUSY 0x08 /* Unit is very busy */
11190 byte reserved[2]; /* reserved, set to 0 */
11191 byte cmd[sizeof(cdb1_t)]; /* SCSI Command Descriptor Block */
11192 byte sense[sizeof(sense_t)];/* SCSI Request Sense Information */
11193 } ccb_t;
11194
11195
11196 /* End of one chunk must be as "odd" as the start of the next. */
11197 #define DMA_CHECK(end, start) ((((int) (end) ^ (int) (start)) & 1) == 0)
11198
11199 /* Scatter/Gather DMA list */
11200 typedef struct {
11201 big24 datalen; /* length of a memory segment */
11202 big24 dataptr; /* address of a memory segment */
11203 } dma_t;
11204
11205
11206 /* Miscellaneous parameters */
11207 #define SCSI_TIMEOUT 250 /* SCSI selection timeout (ms), 0 = none */
11208 #define AHA_TIMEOUT 500 /* max msec wait for controller reset */
11209
.Ep 124 src/kernel/aha_scsi.c
11210 #define MAX_DEVICES 8 /* 8 devices for the 8 SCSI targets */
11211 #define NR_DISKDEVS (MAX_DEVICES * DEV_PER_DRIVE)
11212 #define NR_TAPEDEVS (MAX_DEVICES * 2)
11213 #define NR_GENDEVS (MAX_DEVICES)
11214 #define SUB_PER_DRIVE (NR_PARTITIONS * NR_PARTITIONS)
11215 #define NR_SUBDEVS (MAX_DEVICES * SUB_PER_DRIVE)
11216 #define MINOR_st0 64
11217
11218 #define TYPE_SD 0 /* disk device number */
11219 #define TYPE_NRST 1 /* non rewind-on-close tape device */
11220 #define TYPE_RST 2 /* rewind-on-close tape device */
11221
11222
11223 /* Variables */
11224 PRIVATE struct scsi { /* Per-device table */
11225 char targ; /* SCSI Target ID */
11226 char lun; /* SCSI Logical Unit Number */
11227 char state; /* online? */
11228 # define S_PRESENT 0x01 /* Device exists */
11229 # define S_READY 0x02 /* Device is ready */
11230 # define S_RDONLY 0x04 /* Device is read-only */
11231 char devtype; /* SCSI_DEVDISK, SCSI_DEVTAPE, ... */
11232 unsigned block_size; /* device or media block size */
11233 unsigned count_max; /* maximum single read or write */
11234 unsigned open_ct; /* number of processes using the device */
11235 union {
11236 struct { /* Tape data */
11237 char open_mode; /* open for reading or writing? */
11238 char at_eof; /* got EOF mark */
11239 char need_eof; /* need to write an eof mark */
11240 char tfixed; /* tape in fixed mode */
11241 struct mtget tstat; /* tape status info */
11242 struct device dummypart; /* something for s_prepare to return */
11243 } tape;
11244 struct { /* Disk data */
11245 struct device part[DEV_PER_DRIVE]; /* primaries: sd[0-4] */
11246 struct device subpart[SUB_PER_DRIVE]; /* subparts: sd[1-4][a-d] */
11247 } disk;
11248 } u;
11249 } scsi[MAX_DEVICES];
11250
11251 #define open_mode u.tape.open_mode
11252 #define at_eof u.tape.at_eof
11253 #define need_eof u.tape.need_eof
11254 #define tfixed u.tape.tfixed
11255 #define tstat u.tape.tstat
11256 #define dummypart u.tape.dummypart
11257 #define part u.disk.part
11258 #define subpart u.disk.subpart
11259
11260 /* Tape device status (tstat.mt_dsreg). */
11261 #define DS_OK 0 /* Device OK */
11262 #define DS_ERR 1 /* Error state */
11263 #define DS_EOF 2 /* Last read or space hit EOF */
11264
11265 /* SCSI device types */
11266 PRIVATE char *scsi_devstr[SCSI_DEVMAX+1] = {
11267 "DISK", "TAPE", "PRINTER", "CPU", "WORM", "CDROM", "SCANNER", "OPTICAL",
11268 "JUKEBOX", "COMM"
11269 };
.Op 125 src/kernel/aha_scsi.c
11270
11271 /* SCSI sense key types */
11272 PRIVATE char *str_scsi_sense[] = {
11273 "NO SENSE INFO", "RECOVERED ERROR", "NOT READY", "MEDIUM ERROR",
11274 "HARDWARE ERROR", "ILLEGAL REQUEST", "UNIT ATTENTION", "DATA PROTECT",
11275 "BLANK CHECK", "VENDOR UNIQUE ERROR", "COPY ABORTED", "ABORTED COMMAND",
11276 "EQUAL", "VOLUME OVERFLOW", "MISCOMPARE", "SENSE RESERVED"
11277 };
11278
11279 /* Some of the above errors must be printed on the console. */
11280 #if AHA_DEBUG & 1
11281 #define sense_serious(key) ((key) != 0)
11282 #else
11283 #define sense_serious(key) ((0xFE1C & (1 << (key))) != 0)
11284 #endif
11285
11286 /* Administration for one SCSI request. */
11287 typedef struct request {
11288 unsigned count; /* number of bytes to transfer */
11289 unsigned retry; /* number of tries allowed if retryable */
11290 unsigned long pos; /* first byte on the device to transfer */
11291 ccb_t ccb; /* Command Control Block */
11292 dma_t dmalist[NR_IOREQS]; /* scatter/gather dma list */
11293 dma_t *dmaptr; /* to add scatter/gather entries */
11294 dma_t *dmalimit; /* adapter model dependent limit to list */
11295 struct iorequest_s *iov[NR_IOREQS]; /* affected I/O requests */
11296 } request_t;
11297
11298 PRIVATE request_t request;
11299 #define rq (&request) /* current request (there is only one) */
11300
11301 #define ccb_cmd0(rq) (* (cdb0_t *) (rq)->ccb.cmd)
11302 #define ccb_cmd1(rq) (* (cdb1_t *) (rq)->ccb.cmd)
11303 #define ccb_sense(rq) (* (sense_t *) ((rq)->ccb.cmd + (rq)->ccb.cmdlen))
11304
11305 PRIVATE int aha_basereg; /* base I/O register */
11306 PRIVATE int aha_model; /* board model */
11307 PRIVATE struct scsi *s_sp; /* active SCSI device struct */
11308 PRIVATE struct device *s_dv; /* active partition */
11309 PRIVATE int s_type; /* sd, rst, nrst? */
11310 PRIVATE unsigned long s_nextpos;/* next byte on the device to transfer */
11311 PRIVATE unsigned long s_buf_blk;/* disk block currently in tmp_buf */
11312 PRIVATE int s_opcode; /* DEV_READ or DEV_WRITE */
11313 PRIVATE int s_must; /* must finish the current request? */
11314 PRIVATE int aha_irq; /* configured IRQ */
11315 PRIVATE mailbox_t mailbox[2]; /* out and in mailboxes */
11316 PRIVATE inquiry_t inqdata; /* results of Inquiry command */
11317
11318
11319 /* Functions */
11320
11321 FORWARD _PROTOTYPE( struct device *s_prepare, (int device) );
11322 FORWARD _PROTOTYPE( char *s_name, (void) );
11323 FORWARD _PROTOTYPE( int s_do_open, (struct driver *dp, message *m_ptr) );
11324 FORWARD _PROTOTYPE( int scsi_probe, (void) );
11325 FORWARD _PROTOTYPE( int scsi_sense, (void) );
11326 FORWARD _PROTOTYPE( int scsi_inquiry, (void) );
11327 FORWARD _PROTOTYPE( int scsi_ndisk, (void) );
11328 FORWARD _PROTOTYPE( int scsi_ntape, (void) );
11329 FORWARD _PROTOTYPE( int s_schedule, (int proc_nr, struct iorequest_s *iop) );
.Ep 126 src/kernel/aha_scsi.c
11330 FORWARD _PROTOTYPE( int s_finish, (void) );
11331 FORWARD _PROTOTYPE( int s_rdcdrom, (int proc_nr, struct iorequest_s *iop,
11332 unsigned long pos, unsigned nbytes, phys_bytes user_phys) );
11333 FORWARD _PROTOTYPE( int s_do_close, (struct driver *dp, message *m_ptr) );
11334 FORWARD _PROTOTYPE( int s_do_ioctl, (struct driver *dp, message *m_ptr) );
11335 FORWARD _PROTOTYPE( int scsi_simple, (int opcode, int count) );
11336 FORWARD _PROTOTYPE( void group0, (void) );
11337 FORWARD _PROTOTYPE( void group1, (void) );
11338 FORWARD _PROTOTYPE( int scsi_command, (phys_bytes data, vir_bytes len) );
11339 FORWARD _PROTOTYPE( void aha_command, (int outlen, byte *outptr,
11340 int inlen, byte *inptr) );
11341 FORWARD _PROTOTYPE( int aha_reset, (void) );
11342 FORWARD _PROTOTYPE( int s_handler, (int irq) );
11343
11344 FORWARD _PROTOTYPE( void h2b16, (big16 b, U16_t l) );
11345 FORWARD _PROTOTYPE( void h2b24, (big24 b, u32_t l) );
11346 FORWARD _PROTOTYPE( void h2b32, (big32 b, u32_t l) );
11347 FORWARD _PROTOTYPE( u16_t b2h16, (big16 b) );
11348 FORWARD _PROTOTYPE( u32_t b2h24, (big24 b) );
11349 FORWARD _PROTOTYPE( u32_t b2h32, (big32 b) );
11350
11351
11352 #if AHA_DEBUG & 2
11353 FORWARD _PROTOTYPE( void errordump, (void) );
11354 #else
11355 #define errordump()
11356 #endif
11357
11358 #if AHA_DEBUG & 4
11359 FORWARD _PROTOTYPE( void show_req, (void) );
11360 #else
11361 #define show_req()
11362 #endif
11363
11364 #if AHA_DEBUG & 8
11365 FORWARD _PROTOTYPE( void dump_scsi_cmd, (void) );
11366 #else
11367 #define dump_scsi_cmd()
11368 #endif
11369
11370 FORWARD _PROTOTYPE( void s_geometry, (struct partition *entry));
11371
11372
11373 /* Entry points to this driver. */
11374 PRIVATE struct driver s_dtab = {
11375 s_name, /* current device's name */
11376 s_do_open, /* open or mount request, initialize device */
11377 s_do_close, /* release device */
11378 s_do_ioctl, /* tape and partition ioctls */
11379 s_prepare, /* prepare for I/O on a given minor device */
11380 s_schedule, /* precompute SCSI transfer parameters, etc. */
11381 s_finish, /* do the I/O */
11382 nop_cleanup, /* no cleanup needed */
11383 s_geometry /* tell the geometry of the disk */
11384 };
11385
11386
11387 /*===========================================================================*
11388 * aha_scsi_task *
11389 *===========================================================================*/
.Op 127 src/kernel/aha_scsi.c
11390 PUBLIC void aha_scsi_task()
11391 {
11392 /* Set target and logical unit numbers, then call the generic main loop. */
11393 int i;
11394 struct scsi *sp;
11395 long v;
11396 char *name;
11397 static char fmt[] = "d,d";
11398
11399 for (i = 0; i < MAX_DEVICES; i++) {
11400 (void) s_prepare(i * DEV_PER_DRIVE);
11401 sp = s_sp;
11402
11403 /* Look into the environment for special parameters. */
11404 name = s_name();
11405
11406 v = i;
11407 (void) env_parse(name, fmt, 0, &v, 0L, 7L);
11408 sp->targ = v;
11409
11410 v = 0;
11411 (void) env_parse(name, fmt, 1, &v, 0L, 7L);
11412 sp->lun = v;
11413 }
11414 driver_task(&s_dtab);
11415 }
11418 /*===========================================================================*
11419 * s_prepare *
11420 *===========================================================================*/
11421 PRIVATE struct device *s_prepare(device)
11422 int device;
11423 {
11424 /* Prepare for I/O on a device. */
11425
11426 rq->count = 0; /* no requests as yet */
11427 s_must = TRUE; /* the first transfers must be done */
11428 s_buf_blk = -1; /* invalidate s_buf_blk */
11429
11430 if (device < NR_DISKDEVS) { /* sd0, sd1, ... */
11431 s_type = TYPE_SD;
11432 s_sp = &scsi[device / DEV_PER_DRIVE];
11433 s_dv = &s_sp->part[device % DEV_PER_DRIVE];
11434 } else
11435 if ((unsigned) (device - MINOR_hd1a) < NR_SUBDEVS) { /* sd1a, sd1b, ... */
11436 device -= MINOR_hd1a;
11437 s_type = TYPE_SD;
11438 s_sp = &scsi[device / SUB_PER_DRIVE];
11439 s_dv = &s_sp->subpart[device % SUB_PER_DRIVE];
11440 } else
11441 if ((unsigned) (device - MINOR_st0) < NR_TAPEDEVS) { /* nrst0, rst0, ... */
11442 device -= MINOR_st0;
11443 s_type = device & 1 ? TYPE_RST : TYPE_NRST;
11444 s_sp = &scsi[device >> 1];
11445 s_dv = &s_sp->dummypart;
11446 } else {
11447 return(NIL_DEV);
11448 }
11449
.Ep 128 src/kernel/aha_scsi.c
11450 return(s_dv);
11451 }
11454 /*===========================================================================*
11455 * s_name *
11456 *===========================================================================*/
11457 PRIVATE char *s_name()
11458 {
11459 /* Return a name for the current device. */
11460 static char name[] = "sd35";
11461 int n = (s_sp - scsi);
11462
11463 switch (s_type) {
11464 case TYPE_SD: /* Disk device: sd* */
11465 name[1] = 'd';
11466 n *= DEV_PER_DRIVE;
11467 break;
11468 case TYPE_RST: /* Tape device: st* */
11469 case TYPE_NRST:
11470 name[1] = 't';
11471 break;
11472 }
11473 if (n < 10) {
11474 name[2] = '0' + n;
11475 name[3] = 0;
11476 } else {
11477 name[2] = '0' + n / 10;
11478 name[3] = '0' + n % 10;
11479 }
11480 return name;
11481 }
11484 /*===========================================================================*
11485 * s_do_open *
11486 *===========================================================================*/
11487 PRIVATE int s_do_open(dp, m_ptr)
11488 struct driver *dp;
11489 message *m_ptr;
11490 {
11491 struct scsi *sp;
11492 int r;
11493
11494 if (aha_irq == 0 && !aha_reset()) return(EIO); /* no controller, forget it */
11495
11496 if (s_prepare(m_ptr->DEVICE) == NIL_DEV) return(ENXIO);
11497 sp = s_sp;
11498
11499 if ((r = scsi_probe()) != OK) return(r);
11500
11501 if (sp->state & S_RDONLY && m_ptr->COUNT & W_BIT) return(EACCES);
11502
11503 switch (sp->devtype) {
11504 case SCSI_DEVDISK:
11505 case SCSI_DEVWORM:
11506 case SCSI_DEVCDROM:
11507 case SCSI_DEVOPTICAL:
11508 /* Read partition tables on first open. */
11509 if (sp->open_ct == 0) {
.Op 129 src/kernel/aha_scsi.c
11510 partition(&s_dtab, (int) (sp-scsi) * DEV_PER_DRIVE, P_PRIMARY);
11511 }
11512 break;
11513 case SCSI_DEVTAPE:
11514 /* Make sure tape is not already open. */
11515 if (sp->open_ct > 0) return(EBUSY);
11516
11517 sp->open_mode = m_ptr->COUNT;
11518 /* If open(..., O_WRONLY) then write a filemark on close even if no
11519 * write is done.
11520 */
11521 sp->need_eof = ((sp->open_mode & (R_BIT|W_BIT)) == W_BIT);
11522 break;
11523 }
11524 sp->open_ct++;
11525 return(OK);
11526 }
11529 /*===========================================================================*
11530 * scsi_probe *
11531 *===========================================================================*/
11532 PRIVATE int scsi_probe()
11533 {
11534 /* See if a device exists and if it is ready. */
11535 struct scsi *sp = s_sp;
11536 sense_t *sense;
11537 int r, key;
11538
11539 /* Something out there? */
11540 if ((r = scsi_sense()) != OK) {
11541 if (sp->state & S_PRESENT) {
11542 printf("%s: offlinen", s_name());
11543 sp->state = 0;
11544 }
11545 return(r);
11546 }
11547
11548 if (!(sp->state & S_PRESENT)) {
11549 /* First contact with a new device, what type is it? */
11550
11551 if ((r = scsi_inquiry()) != OK) return(r);
11552
11553 sp->devtype = inqdata.devtype;
11554 }
11555
11556 if (!(sp->state & S_READY)) {
11557 /* If it's a disk: start it, if it's a tape: load it. */
11558 (void) scsi_simple(SCSI_STRTSTP, 1);
11559 }
11560
11561 /* See if the unit is ready for I/O. A disk may be spinning up, a
11562 * floppy or tape drive may be empty.
11563 */
11564 while ((key = scsi_simple(SCSI_UNITRDY, 0)) != SENSE_NO_SENSE) {
11565 /* Not ready, why? */
11566
11567 sp->state &= ~S_READY;
11568
11569 switch (key) {
.Ep 130 src/kernel/aha_scsi.c
11570 case SENSE_UNIT_ATT:
11571 /* A media change or something, try again. */
11572 break;
11573 case SENSE_NOT_READY:
11574 /* Look at the additional sense data to see why it isn't
11575 * ready.
11576 */
11577 sense = &ccb_sense(rq);
11578 switch ((sense->add_code << 8) | sense->add_qual) {
11579 case 0x0401:
11580 /* "It is becoming ready." Fine, we wait. */
11581 milli_delay(1000);
11582 break;
11583 case 0x0402:
11584 /* "Initialization command required." So we tell it
11585 * to spin up.
11586 */
11587 if (scsi_simple(SCSI_STRTSTP, 1) != SENSE_NO_SENSE)
11588 return(EIO);
11589 break;
11590 case 0x0403:
11591 /* "Manual intervention required." */
11592 case 0x3A00:
11593 /* "No media present." */
11594 printf("%s: no media loadedn", s_name());
11595 return(EIO);
11596 default:
11597 /* For some reason it is not usable. */
11598 printf("%s: not readyn", s_name());
11599 return(EIO);
11600 }
11601 break;
11602 default:
11603 /* The device is in some odd state. */
11604 if (key != SENSE_NOT_READY) {
11605 printf("%s: hardware errorn", s_name());
11606 return(EIO);
11607 }
11608 }
11609 }
11610
11611 if (!(sp->state & S_PRESENT)) {
11612 /* Do the inquiry again, the message may have changed. */
11613 if (scsi_inquiry() != OK) return(EIO);
11614
11615 /* Tell what kind of device it is we have found. */
11616
11617 printf("%s: %-7s %.48sn",
11618 s_name(),
11619 inqdata.devtype > SCSI_DEVMAX ? "UNKNOWN"
11620 : scsi_devstr[inqdata.devtype],
11621 inqdata.vendor /* + product + revision + extra */);
11622 }
11623
11624 if (!(sp->state & S_READY)) {
11625 /* Get the geometry, limits, etc. */
11626
11627 switch (sp->devtype) {
11628 case SCSI_DEVDISK:
11629 case SCSI_DEVWORM:
.Op 131 src/kernel/aha_scsi.c
11630 case SCSI_DEVCDROM:
11631 case SCSI_DEVOPTICAL:
11632 if (scsi_ndisk() != OK) return(EIO);
11633 break;
11634 case SCSI_DEVTAPE:
11635 if (scsi_ntape() != OK) return(EIO);
11636 break;
11637 default:
11638 printf("%s: unsupportedn", s_name());
11639 return(EIO);
11640 }
11641 }
11642 return(OK);
11643 }
11646 /*===========================================================================*
11647 * scsi_sense *
11648 *===========================================================================*/
11649 PRIVATE int scsi_sense()
11650 {
11651 int key;
11652 sense_t *sense = (sense_t *) tmp_buf;
11653
11654 /* Do a request sense to find out if a target exists or to check out
11655 * a unit attention condition.
11656 */
11657 key = scsi_simple(SCSI_REQSENSE, sizeof(sense_t));
11658
11659 if (rq->ccb.hastat == HST_TIMEOUT) return(ENXIO); /* nothing there */
11660 if (rq->ccb.hastat != 0) return(EIO); /* something very bad */
11661
11662 /* There is something out there for sure. */
11663 if (key == SENSE_UNIT_ATT || sense_key(sense->key) == SENSE_UNIT_ATT) {
11664 /* Device is in a "look at me" state, probably changed media. */
11665 s_sp->state &= ~S_READY;
11666 }
11667 return(OK);
11668 }
11671 /*===========================================================================*
11672 * scsi_inquiry *
11673 *===========================================================================*/
11674 PRIVATE int scsi_inquiry()
11675 {
11676 /* Prefill with nulls. */
11677 memset(tmp_buf, '', sizeof(inquiry_t));
11678
11679 /* Do a SCSI inquiry. */
11680 if (scsi_simple(SCSI_INQUIRY, sizeof(inquiry_t)) != SENSE_NO_SENSE)
11681 return(EIO);
11682 inqdata = * (inquiry_t *) tmp_buf;
11683
11684 if (inqdata.len == 0) {
11685 /* The device doesn't return meaningful text fields. */
11686 strcpy(inqdata.vendor, "(unknown)");
11687 }
11688
11689 /* The top three bits of devtype must be zero for the lun to exist. */
.Ep 132 src/kernel/aha_scsi.c
11690 if ((inqdata.devtype & 0xE0) != 0) return(ENXIO);
11691
11692 return(OK);
11693 }
11696 /*===========================================================================*
11697 * scsi_ndisk *
11698 *===========================================================================*/
11699 PRIVATE int scsi_ndisk()
11700 {
11701 /* Gather disk data, capacity and block size. */
11702
11703 struct scsi *sp = s_sp;
11704 unsigned long capacity = -1, block_size = SECTOR_SIZE;
11705 byte *buf = tmp_buf;
11706
11707 /* Minor device type must be for a disk. */
11708 if (s_type != TYPE_SD) return(EIO);
11709
11710 if (sp->devtype == SCSI_DEVCDROM) {
11711 /* Read-only by definition. */
11712 sp->state |= S_RDONLY;
11713 } else {
11714 /* SCSI modesense to find out if the disk is write protected. */
11715 if (scsi_simple(SCSI_MDSENSE, 255) != SENSE_NO_SENSE) return(EIO);
11716
11717 /* Write protected? */
11718 sp->state &= ~S_RDONLY;
11719 if (buf[2] & 0x80) sp->state |= S_RDONLY;
11720
11721 /* Don't write a worm disk, not wise at the moment. */
11722 if (sp->devtype == SCSI_DEVWORM) sp->state |= S_RDONLY;
11723 }
11724
11725 /* Get drive capacity and block size. */
11726 group1();
11727 rq->ccb.opcode = CCB_INIT;
11728 ccb_cmd1(rq).scsi_op = SCSI_CAPACITY;
11729
11730 if (scsi_command(tmp_phys, 8) == SENSE_NO_SENSE) {
11731 capacity = b2h32(buf + 0) + 1;
11732 block_size = b2h32(buf + 4);
11733 printf("%s: capacity %lu x %lu bytesn",
11734 s_name(), capacity, block_size);
11735 } else {
11736 printf("%s: unknown capacityn", s_name());
11737 }
11738
11739 /* We do not believe block sizes over 4 kb. */
11740 if (block_size > 4096) {
11741 printf("%s: can't handle %lu byte blocksn", s_name(), block_size);
11742 return(EIO);
11743 }
11744
11745 sp->block_size = block_size;
11746 #if _WORD_SIZE > 2
11747 /* Keep it within reach of a group 0 command. */
11748 sp->count_max = 0x100 * block_size;
11749 #else
.Op 133 src/kernel/aha_scsi.c
11750 sp->count_max = block_size > UINT_MAX/0x100 ? UINT_MAX : 0x100 * block_size;
11751 #endif
11752
11753 /* The fun ends at 4GB. */
11754 if (capacity > ((unsigned long) -1) / block_size)
11755 sp->part[0].dv_size = -1;
11756 else
11757 sp->part[0].dv_size = capacity * block_size;
11758
11759 /* Finally we recognize its existence. */
11760 sp->state |= S_PRESENT|S_READY;
11761
11762 return(OK);
11763 }
11766 /*===========================================================================*
11767 * scsi_ntape *
11768 *===========================================================================*/
11769 PRIVATE int scsi_ntape()
11770 {
11771 /* Gather tape data, block limits, fixed block size or not. */
11772 struct scsi *sp = s_sp;
11773 unsigned minblk;
11774 unsigned long maxblk;
11775 byte *buf = tmp_buf;
11776
11777 /* Minor device type must be for a tape. */
11778 if (s_type != TYPE_RST && s_type != TYPE_NRST) return(EIO);
11779
11780 /* Read limits. */
11781 if (scsi_simple(SCSI_RDLIMITS, 6) != SENSE_NO_SENSE) return(EIO);
11782 minblk = b2h16(buf + 4);
11783 maxblk = b2h24(buf + 1);
11784
11785 printf("%s: limits: min block len %u, max block len %lun",
11786 s_name(), minblk, maxblk);
11787
11788 if (sp->state & S_PRESENT) {
11789 /* Keep the current block size. */
11790 if (sp->tfixed) minblk= maxblk= sp->block_size;
11791 }
11792
11793 sp->tstat.mt_dsreg = DS_OK;
11794 sp->tstat.mt_erreg = 0;
11795 sp->tstat.mt_fileno = 0;
11796 sp->tstat.mt_blkno = 0;
11797 sp->tstat.mt_resid = 0;
11798
11799 if (minblk == maxblk) {
11800 /* Fixed block length. */
11801 sp->tfixed = TRUE;
11802 sp->block_size = minblk;
11803 sp->tstat.mt_blksize = minblk;
11804 sp->count_max = UINT_MAX;
11805 } else {
11806 /* Variable block length. */
11807 sp->tfixed = FALSE;
11808 sp->block_size = 1;
11809 sp->tstat.mt_blksize = 0;
.Ep 134 src/kernel/aha_scsi.c
11810 sp->count_max = maxblk == 0 ? UINT_MAX : maxblk;
11811 }
11812
11813 /* SCSI modesense. */
11814 if (scsi_simple(SCSI_MDSENSE, 255) != SENSE_NO_SENSE) return(EIO);
11815
11816 /* Write protected? */
11817 sp->state &= ~S_RDONLY;
11818 if (buf[2] & 0x80) sp->state |= S_RDONLY;
11819
11820 /* Density and block size. */
11821 if (buf[3] >= 8) {
11822 printf("%s: density 0x%02x, nblocks %lu, block len ",
11823 s_name(),
11824 buf[4],
11825 b2h24(buf + 4 + 1));
11826 printf(sp->tfixed ? "%lun" : "variablen", b2h24(buf + 4 + 5));
11827 }
11828
11829 sp->state |= S_PRESENT|S_READY;
11830 return(OK);
11831 }
11834 /*===========================================================================*
11835 * s_schedule *
11836 *===========================================================================*/
11837 PRIVATE int s_schedule(proc_nr, iop)
11838 int proc_nr; /* process doing the request */
11839 struct iorequest_s *iop; /* pointer to read or write request */
11840 {
11841 /* Gather I/O requests on consecutive blocks so they may be read/written
11842 * in one SCSI command using scatter/gather DMA.
11843 */
11844 struct scsi *sp = s_sp;
11845 int r, opcode, spanning;
11846 unsigned nbytes, count;
11847 unsigned long pos;
11848 phys_bytes user_phys, dma_phys;
11849 static unsigned dma_count;
11850 static struct iorequest_s **iopp; /* to add I/O request pointers */
11851 static phys_bytes dma_last; /* address of end of the last added entry */
11852
11853 /* This many bytes to read/write */
11854 nbytes = iop->io_nbytes;
11855
11856 /* From/to this position on the device */
11857 pos = iop->io_position;
11858
11859 /* To/from this user address */
11860 user_phys = numap(proc_nr, (vir_bytes) iop->io_buf, nbytes);
11861 if (user_phys == 0) return(iop->io_nbytes = EINVAL);
11862
11863 /* Read or write? */
11864 opcode = iop->io_request & ~OPTIONAL_IO;
11865
11866 switch (sp->devtype) {
11867 case SCSI_DEVCDROM:
11868 case SCSI_DEVWORM:
11869 case SCSI_DEVDISK:
.Op 135 src/kernel/aha_scsi.c
11870 case SCSI_DEVOPTICAL:
11871 /* Which block on disk and how close to EOF? */
11872 if (pos >= s_dv->dv_size) return(OK); /* At EOF */
11873 if (pos + nbytes > s_dv->dv_size) nbytes = s_dv->dv_size - pos;
11874 pos += s_dv->dv_base;
11875
11876 if ((nbytes % sp->block_size) != 0 || (pos % sp->block_size) != 0) {
11877 /* Not on a device block boundary. CD-ROM? */
11878 return(s_rdcdrom(proc_nr, iop, pos, nbytes, user_phys));
11879 }
11880 break;
11881
11882 case SCSI_DEVTAPE:
11883 if ((nbytes % sp->block_size) != 0)
11884 return(iop->io_nbytes = EINVAL);
11885
11886 /* Old error condition? */
11887 if (sp->tstat.mt_dsreg == DS_ERR) return(iop->io_nbytes = EIO);
11888
11889 if (opcode == DEV_READ && sp->at_eof) return(OK);
11890
11891 s_nextpos = pos = 0; /* pos is ignored */
11892 break;
11893
11894 default:
11895 return(iop->io_nbytes = EIO);
11896 }
11897
11898 /* Probe a device that isn't ready. */
11899 if (!(sp->state & S_READY) && scsi_probe() != OK) return(EIO);
11900
11901 if (rq->count > 0 && pos != s_nextpos) {
11902 /* This new request can't be chained to the job being built. */
11903 if ((r = s_finish()) != OK) return(r);
11904 }
11905
11906 /* The next consecutive block starts at byte position... */
11907 s_nextpos = pos + nbytes;
11908
11909 spanning = FALSE; /* set if a request spans several DMA vectors */
11910
11911 /* While there are "unscheduled" bytes in the request: */
11912 do {
11913 dma_phys = user_phys;
11914
11915 if (rq->count > 0 && (
11916 rq->count == sp->count_max
11917 || rq->dmaptr == rq->dmalimit
11918 || !DMA_CHECK(dma_last, dma_phys)
11919 )) {
11920 /* This request can not be added to the scatter/gather list. */
11921 if ((r = s_finish()) != OK) return(r);
11922 s_must = spanning;
11923
11924 continue; /* try again */
11925 }
11926
11927 if (rq->count == 0) {
11928 /* The first request in a row, initialize. */
11929 rq->pos = pos;
.Ep 136 src/kernel/aha_scsi.c
11930 s_opcode = opcode;
11931 iopp = rq->iov;
11932 rq->dmaptr = rq->dmalist;
11933 rq->retry = 2;
11934 }
11935
11936 count = nbytes;
11937
11938 /* Don't exceed the maximum transfer count. */
11939 if (rq->count + count > sp->count_max)
11940 count = sp->count_max - rq->count;
11941
11942 /* New scatter/gather entry. */
11943 h2b24(rq->dmaptr->dataptr, dma_phys);
11944 h2b24(rq->dmaptr->datalen, (u32_t) (dma_count = count));
11945 rq->dmaptr++;
11946 dma_last = dma_phys + count;
11947
11948 /* Which I/O request? */
11949 *iopp++ = iop;
11950
11951 /* Update counters. */
11952 rq->count += count;
11953 pos += count;
11954 user_phys += count;
11955 nbytes -= count;
11956 if (!(iop->io_request & OPTIONAL_IO)) s_must = TRUE;
11957
11958 spanning = TRUE; /* the rest of the request must be done */
11959 } while (nbytes > 0);
11960
11961 return(OK);
11962 }
11965 /*===========================================================================*
11966 * s_finish *
11967 *===========================================================================*/
11968 PRIVATE int s_finish()
11969 {
11970 /* Send the I/O requests gathered in *rq to the host adapter. */
11971
11972 struct scsi *sp = s_sp;
11973 unsigned long block;
11974 struct iorequest_s **iopp, *iop;
11975 int key;
11976
11977 if (rq->count == 0) return(OK); /* spurious finish */
11978
11979 show_req();
11980
11981 /* If all the requests are optional then don't do just a few. */
11982 if (!s_must && rq->count < 0x2000) {
11983 rq->count = 0;
11984 return(OK);
11985 }
11986
11987 iopp = rq->iov;
11988 iop = *iopp++;
11989
.Op 137 src/kernel/aha_scsi.c
11990 retry:
11991 switch (sp->devtype) {
11992 case SCSI_DEVCDROM:
11993 case SCSI_DEVWORM:
11994 case SCSI_DEVDISK:
11995 case SCSI_DEVOPTICAL:
11996 /* A read or write SCSI command for a random access device. */
11997 block = rq->pos / sp->block_size;
11998
11999 if (block < (1L << 21)) {
12000 /* We can use a group 0 command for small disks. */
12001 group0();
12002 rq->ccb.opcode = CCB_SCATTER;
12003 ccb_cmd0(rq).scsi_op =
12004 s_opcode == DEV_WRITE ? SCSI_WRITE : SCSI_READ;
12005 h2b24(ccb_cmd0(rq).lba, block);
12006 ccb_cmd0(rq).nblocks = rq->count / sp->block_size;
12007 } else {
12008 /* Large disks require a group 1 command. */
12009 group1();
12010 rq->ccb.opcode = CCB_SCATTER;
12011 ccb_cmd1(rq).scsi_op =
12012 s_opcode == DEV_WRITE ? SCSI_WRITE1 : SCSI_READ1;
12013 h2b32(ccb_cmd1(rq).lba, block);
12014 h2b16(ccb_cmd1(rq).nblocks, rq->count / sp->block_size);
12015 }
12016
12017 key = scsi_command(0L, 0);
12018
12019 if (key == SENSE_NO_SENSE) {
12020 /* fine */;
12021 } else
12022 if (key == SENSE_UNIT_ATT || key == SENSE_ABORTED_CMD) {
12023 /* Check condition? Bus reset most likely. */
12024 /* Aborted command? Maybe retrying will help. */
12025 if (--rq->retry > 0) goto retry;
12026 return(iop->io_nbytes = EIO);
12027 } else
12028 if (key == SENSE_RECOVERED) {
12029 /* Disk drive managed to recover from a read error. */
12030 printf("%s: soft read error at block %lu (recovered)n",
12031 s_name(), b2h32(ccb_sense(rq).info));
12032 key = SENSE_NO_SENSE;
12033 break;
12034 } else {
12035 /* A fatal error occurred, bail out. */
12036 return(iop->io_nbytes = EIO);
12037 }
12038 break;
12039
12040 case SCSI_DEVTAPE:
12041 /* A read or write SCSI command for a sequential access device. */
12042 group0();
12043 rq->ccb.opcode = CCB_SCATTER;
12044 ccb_cmd0(rq).scsi_op = s_opcode == DEV_WRITE ? SCSI_WRITE : SCSI_READ;
12045 ccb_cmd0(rq).fixed = sp->tfixed;
12046 h2b24(ccb_cmd0(rq).trlength, rq->count / sp->block_size);
12047
12048 key = scsi_command(0L, 0);
12049
.Ep 138 src/kernel/aha_scsi.c
12050 if (key != SENSE_NO_SENSE) {
12051 /* Either at EOF or EOM, or an I/O error. */
12052
12053 if (sense_eof(key) || sense_eom(key)) {
12054 /* Not an error, but EOF or EOM. */
12055 sp->at_eof = TRUE;
12056 sp->tstat.mt_dsreg = DS_EOF;
12057
12058 /* The residual tells how much has not been read. */
12059 rq->count -= sp->tstat.mt_resid * sp->block_size;
12060
12061 if (sense_eof(key)) {
12062 /* Went over a filemark. */
12063 sp->tstat.mt_blkno = !sp->tfixed ? -1 :
12064 - (int) (rq->count / sp->block_size);
12065 sp->tstat.mt_fileno++;
12066 }
12067 }
12068 if (sense_ili(key)) {
12069 /* Incorrect length on a variable block length tape. */
12070
12071 if (sp->tstat.mt_resid <= 0) {
12072 /* Large block could not be read. */
12073 return(iop->io_nbytes = EIO);
12074 }
12075 /* Small block read, this is ok. */
12076 rq->count -= sp->tstat.mt_resid;
12077 sp->tstat.mt_dsreg = DS_OK;
12078 }
12079 if (key == SENSE_RECOVERED) {
12080 /* Tape drive managed to recover from an error. */
12081 printf("%s: soft %s error (recovered)n",
12082 s_name(),
12083 s_opcode == DEV_READ ? "read" : "write");
12084 key = SENSE_NO_SENSE;
12085 sp->tstat.mt_dsreg = DS_OK;
12086 }
12087 if (sp->tstat.mt_dsreg == DS_ERR) {
12088 /* Error was fatal. */
12089 return(iop->io_nbytes = EIO);
12090 }
12091 } else {
12092 sp->tstat.mt_dsreg = DS_OK;
12093 }
12094 if (!sp->tfixed) {
12095 /* Variable block length tape reads record by record. */
12096 sp->tstat.mt_blkno++;
12097 } else {
12098 /* Fixed length tape, multiple blocks transferred. */
12099 sp->tstat.mt_blkno += rq->count / sp->block_size;
12100 }
12101 sp->need_eof = (s_opcode == DEV_WRITE);
12102 break;
12103
12104 default:
12105 assert(0);
12106 }
12107
12108 /* Remove bytes transferred from the I/O requests. */
12109 for (;;) {
.Op 139 src/kernel/aha_scsi.c
12110 if (rq->count > iop->io_nbytes) {
12111 rq->count -= iop->io_nbytes;
12112 iop->io_nbytes = 0;
12113 } else {
12114 iop->io_nbytes -= rq->count;
12115 rq->count = 0;
12116 break;
12117 }
12118 iop = *iopp++;
12119 }
12120 return(key == SENSE_NO_SENSE ? OK : EIO); /* may return EIO for EOF */
12121 }
12124 /*===========================================================================*
12125 * s_rdcdrom *
12126 *===========================================================================*/
12127 PRIVATE int s_rdcdrom(proc_nr, iop, pos, nbytes, user_phys)
12128 int proc_nr; /* process doing the request */
12129 struct iorequest_s *iop; /* pointer to read or write request */
12130 unsigned long pos; /* byte position */
12131 unsigned nbytes; /* number of bytes */
12132 phys_bytes user_phys; /* user address */
12133 {
12134 /* CD-ROM's have a basic block size of 2k. We could try to set a smaller
12135 * virtual block size, but many don't support it. So we use this function.
12136 */
12137 struct scsi *sp = s_sp;
12138 int r, key;
12139 unsigned offset, count;
12140 unsigned long block;
12141
12142 /* Only do reads. */
12143 if ((iop->io_request & ~OPTIONAL_IO) != DEV_READ)
12144 return(iop->io_nbytes = EINVAL);
12145
12146 /* Finish any outstanding I/O. */
12147 if ((r = s_finish()) != OK) return(r);
12148
12149 do {
12150 /* Probe a device that isn't ready. */
12151 if (!(sp->state & S_READY) && scsi_probe() != OK) return(EIO);
12152
12153 block = pos / sp->block_size;
12154 if (block == s_buf_blk) {
12155 /* Some of the requested bytes are in the buffer. */
12156 offset = pos % sp->block_size;
12157 count = sp->block_size - offset;
12158 if (count > nbytes) count = nbytes;
12159 phys_copy(tmp_phys + offset, user_phys, (phys_bytes) count);
12160 pos += count;
12161 user_phys += count;
12162 nbytes -= count;
12163 iop->io_nbytes -= count;
12164 } else {
12165 /* Read a block that contains (some of) the bytes wanted. */
12166 rq->retry = 2;
12167 do {
12168 group1();
12169 rq->ccb.opcode = CCB_INIT;
.Ep 140 src/kernel/aha_scsi.c
12170 ccb_cmd1(rq).scsi_op = SCSI_READ1;
12171 h2b32(ccb_cmd1(rq).lba, block);
12172 h2b16(ccb_cmd1(rq).nblocks, 1);
12173 key = scsi_command(tmp_phys, sp->block_size);
12174 } while (key == SENSE_UNIT_ATT && --rq->retry > 0);
12175
12176 if (key != SENSE_NO_SENSE) return(iop->io_nbytes = EIO);
12177
12178 s_buf_blk = block; /* remember block in buffer */
12179 }
12180 } while (nbytes > 0);
12181 return(OK);
12182 }
12185 /*===========================================================================*
12186 * s_do_close *
12187 *===========================================================================*/
12188 PRIVATE int s_do_close(dp, m_ptr)
12189 struct driver *dp;
12190 message *m_ptr;
12191 {
12192 struct scsi *sp;
12193
12194 if (s_prepare(m_ptr->DEVICE) == NIL_DEV) return(ENXIO);
12195 sp = s_sp;
12196
12197 sp->open_ct--;
12198
12199 /* Disks and such don't make trouble. */
12200 if (sp->devtype != SCSI_DEVTAPE) return(OK);
12201
12202 sp->at_eof = FALSE;
12203
12204 /* Write filemark if writes have been done. */
12205 if (sp->need_eof && sp->tstat.mt_dsreg != DS_ERR) {
12206 if (scsi_simple(SCSI_WREOF, 1) != SENSE_NO_SENSE) {
12207 printf("%s: failed to add filemarkn", s_name());
12208 } else {
12209 sp->tstat.mt_dsreg = DS_OK;
12210 sp->tstat.mt_blkno = 0;
12211 sp->tstat.mt_fileno++;
12212 }
12213 }
12214
12215 /* Rewind if rewind device. */
12216 if (s_type == TYPE_RST) {
12217 if (scsi_simple(SCSI_REWIND, 1) != SENSE_NO_SENSE) {
12218 printf("%s: failed to rewindn", s_name());
12219 } else {
12220 sp->tstat.mt_dsreg = DS_OK;
12221 sp->tstat.mt_blkno = 0;
12222 sp->tstat.mt_fileno = 0;
12223 }
12224 }
12225 return(OK);
12226 }
12229 /*===========================================================================*
.Op 141 src/kernel/aha_scsi.c
12230 * s_do_ioctl *
12231 *===========================================================================*/
12232 PRIVATE int s_do_ioctl(dp, m_ptr)
12233 struct driver *dp;
12234 message *m_ptr;
12235 {
12236 struct scsi *sp;
12237
12238 if (s_prepare(m_ptr->DEVICE) == NIL_DEV) return(ENXIO);
12239 sp = s_sp;
12240
12241 /* Ioctls are device specific. */
12242 switch (sp->devtype) {
12243 case SCSI_DEVDISK:
12244 case SCSI_DEVWORM:
12245 case SCSI_DEVCDROM:
12246 case SCSI_DEVOPTICAL:
12247 if (m_ptr->REQUEST == DIOCEJECT) {
12248 /* Eject disk. */
12249 if (sp->open_ct > 1) return(EBUSY);
12250
12251 /* Send a start/stop command with code 2: stop and eject. */
12252 if (scsi_simple(SCSI_STRTSTP, 2) != SENSE_NO_SENSE)
12253 return(EIO);
12254 return(OK);
12255 }
12256 /* Call the common code for disks and disk like devices. */
12257 return(do_diocntl(dp, m_ptr));
12258
12259 default:
12260 return(ENOTTY);
12261
12262 case SCSI_DEVTAPE:
12263 break;
12264 }
12265 /* Further ioctls are for tapes. */
12266
12267 if (m_ptr->REQUEST == MTIOCTOP) {
12268 struct mtop op;
12269 phys_bytes op_phys;
12270 long delta;
12271 int key;
12272 byte *buf = tmp_buf;
12273
12274 /* Basic tape commands: rewind, space, write eof marks, ... */
12275 op_phys = numap(m_ptr->PROC_NR, (vir_bytes) m_ptr->ADDRESS, sizeof(op));
12276 if (op_phys == 0) return(EINVAL);
12277 phys_copy(op_phys, vir2phys(&op), (phys_bytes) sizeof(op));
12278
12279 switch(op.mt_op) {
12280 case MTREW:
12281 case MTOFFL:
12282 case MTRETEN:
12283 case MTFSF:
12284 case MTFSR:
12285 case MTBSF:
12286 case MTBSR:
12287 case MTEOM:
12288 /* Write an EOF mark before spacing. */
12289 if (sp->need_eof && sp->tstat.mt_dsreg != DS_ERR) {
.Ep 142 src/kernel/aha_scsi.c
12290 if (scsi_simple(SCSI_WREOF, 1) != SENSE_NO_SENSE)
12291 return(EIO);
12292 sp->tstat.mt_blkno = 0;
12293 sp->tstat.mt_fileno++;
12294 sp->need_eof = FALSE;
12295 }
12296 sp->at_eof = FALSE;
12297 }
12298
12299 switch(op.mt_op) {
12300 case MTREW:
12301 case MTOFFL:
12302 case MTRETEN:
12303 case MTERASE:
12304 /* Rewind, Offline, Retension, Erase. */
12305 switch(op.mt_op) {
12306 case MTOFFL:
12307 if (scsi_simple(SCSI_LOADUNLD, 0) != SENSE_NO_SENSE)
12308 return(EIO);
12309 sp->state &= ~S_READY;
12310 break;
12311 case MTRETEN:
12312 if (scsi_simple(SCSI_LOADUNLD, 3) != SENSE_NO_SENSE)
12313 return(EIO);
12314 break;
12315 case MTERASE:
12316 if (scsi_simple(SCSI_REWIND, 0) != SENSE_NO_SENSE)
12317 return(EIO);
12318 if (scsi_simple(SCSI_ERASE, 1) != SENSE_NO_SENSE)
12319 return(EIO);
12320 /* Rewind once more. */
12321 /*FALL THROUGH*/
12322 case MTREW:
12323 if (scsi_simple(SCSI_REWIND, 0) != SENSE_NO_SENSE)
12324 return(EIO);
12325 }
12326 sp->tstat.mt_dsreg = DS_OK;
12327 sp->tstat.mt_blkno = 0;
12328 sp->tstat.mt_fileno = 0;
12329 break;
12330 case MTFSF:
12331 case MTFSR:
12332 case MTBSF:
12333 case MTBSR:
12334 if (sp->tstat.mt_dsreg == DS_ERR) return(EIO);
12335 group0();
12336 rq->ccb.opcode = CCB_INIT;
12337 ccb_cmd0(rq).scsi_op = SCSI_SPACE;
12338 delta = op.mt_count;
12339 if (op.mt_op == MTBSR) delta = -delta;
12340 if (op.mt_op == MTBSF) delta = -delta - 1;
12341 h2b24(ccb_cmd0(rq).trlength, delta);
12342 ccb_cmd0(rq).fixed =
12343 op.mt_op == MTFSR || op.mt_op == MTBSR ? 0 : 1;
12344 if ((key = scsi_command(0L, 0)) != SENSE_NO_SENSE) {
12345 if (sense_key(key) != SENSE_NO_SENSE) return(EIO);
12346
12347 if (sense_eom(key)) {
12348 /* Banging into end of tape. */
12349 if (op.mt_op == MTBSF || op.mt_op == MTBSR) {
.Op 143 src/kernel/aha_scsi.c
12350 /* Backspacing to start of tape. */
12351 sp->tstat.mt_dsreg = DS_EOF;
12352 sp->tstat.mt_blkno = 0;
12353 sp->tstat.mt_fileno = 0;
12354 } else {
12355 /* Not forwards please! */
12356 return(EIO);
12357 }
12358 }
12359 if (sense_eof(key)) {
12360 /* Reaching a filemark. */
12361 sp->tstat.mt_dsreg = DS_EOF;
12362 sp->at_eof = TRUE;
12363 if (op.mt_op == MTFSR) {
12364 /* Forwards. */
12365 sp->tstat.mt_blkno = 0;
12366 sp->tstat.mt_fileno++;
12367 } else {
12368 /* Backwards (bad idea!) */
12369 sp->tstat.mt_blkno = -1;
12370 sp->tstat.mt_fileno--;
12371 }
12372 }
12373 } else {
12374 if (op.mt_op == MTFSR || op.mt_op == MTBSR) {
12375 sp->tstat.mt_blkno += delta;
12376 } else {
12377 sp->tstat.mt_blkno = 0;
12378 sp->tstat.mt_fileno += delta;
12379 }
12380 if (op.mt_op == MTBSF) {
12381 /* n+1 backwards, and 1 forward. */
12382 group0();
12383 rq->ccb.opcode = CCB_INIT;
12384 ccb_cmd0(rq).scsi_op = SCSI_SPACE;
12385 h2b24(ccb_cmd0(rq).trlength, 1L);
12386 ccb_cmd0(rq).fixed = 1;
12387 if (scsi_command(0L, 0) != SENSE_NO_SENSE)
12388 return(EIO);
12389 sp->tstat.mt_fileno++;
12390 }
12391 sp->tstat.mt_dsreg = DS_OK;
12392 }
12393 break;
12394 case MTWEOF:
12395 /* Write EOF marks. */
12396 if (sp->tstat.mt_dsreg == DS_ERR) return(EIO);
12397 if (op.mt_count < 0) return(EIO);
12398 if (op.mt_count == 0) return(OK);
12399 group0();
12400 rq->ccb.opcode = CCB_INIT;
12401 ccb_cmd0(rq).scsi_op = SCSI_WREOF;
12402 h2b24(ccb_cmd0(rq).trlength, op.mt_count);
12403 if (scsi_command(0L, 0) != SENSE_NO_SENSE) return(EIO);
12404 sp->tstat.mt_dsreg = DS_OK;
12405 sp->tstat.mt_blkno = 0;
12406 sp->tstat.mt_fileno += op.mt_count;
12407 sp->need_eof = FALSE;
12408 break;
12409 case MTEOM:
.Ep 144 src/kernel/aha_scsi.c
12410 /* Forward space to end of media. */
12411 if (sp->tstat.mt_dsreg == DS_ERR) return(EIO);
12412 do {
12413 group0();
12414 rq->ccb.opcode = CCB_INIT;
12415 ccb_cmd0(rq).scsi_op = SCSI_SPACE;
12416 h2b24(ccb_cmd0(rq).trlength, 0x7FFFFF);
12417 ccb_cmd0(rq).fixed = 1;
12418 key = scsi_command(0L, 0);
12419 sp->tstat.mt_blkno = 0;
12420 sp->tstat.mt_fileno += 0x7FFFFF;
12421 if (key != SENSE_NO_SENSE) {
12422 if (key != SENSE_BLANK_CHECK) return(EIO);
12423 sp->tstat.mt_fileno -= sp->tstat.mt_resid;
12424 }
12425 } while (key == SENSE_NO_SENSE);
12426 sp->tstat.mt_dsreg = DS_OK;
12427 break;
12428 case MTBLKZ:
12429 case MTMODE:
12430 /* Select tape block size or tape density. */
12431
12432 /* Rewind tape. */
12433 if (scsi_simple(SCSI_REWIND, 0) != SENSE_NO_SENSE)
12434 return(EIO);
12435
12436 sp->tstat.mt_dsreg = DS_OK;
12437 sp->tstat.mt_blkno = 0;
12438 sp->tstat.mt_fileno = 0;
12439
12440 if (op.mt_op == MTBLKZ && op.mt_count == 0) {
12441 /* Request for variable block size mode. */
12442 sp->tfixed = FALSE;
12443 sp->block_size = 1;
12444 } else {
12445 /* First a modesense to get the current values. */
12446 if (scsi_simple(SCSI_MDSENSE, 255) != SENSE_NO_SENSE)
12447 return(EIO);
12448
12449 /* Must at least have one block descriptor. */
12450 if (buf[3] < 8) return(EIO);
12451 buf[0] = 0;
12452 buf[1] = 0;
12453 /* buf[2]: buffered mode & speed */
12454 buf[3] = 8;
12455 if (op.mt_op == MTMODE) /* New density */
12456 buf[4 + 0] = op.mt_count;
12457 /* buf[4 + 1]: number of blocks */
12458 buf[4 + 4] = 0;
12459 if (op.mt_op == MTBLKZ) /* New block size */
12460 h2b24(buf + 4 + 5, (long) op.mt_count);
12461
12462 /* Set the new density/blocksize. */
12463 if (scsi_simple(SCSI_MDSELECT, 4+8) != SENSE_NO_SENSE)
12464 return(EIO);
12465 if (op.mt_op == MTBLKZ) {
12466 sp->tfixed = TRUE;
12467 sp->block_size= op.mt_count;
12468 }
12469 }
.Op 145 src/kernel/aha_scsi.c
12470 sp->state &= ~S_READY;
12471 if (scsi_probe() != OK) return(EIO);
12472 break;
12473 default:
12474 /* Not implemented. */
12475 return(ENOTTY);
12476 }
12477 } else
12478 if (m_ptr->REQUEST == MTIOCGET) {
12479 /* Request tape status. */
12480 phys_bytes get_phys;
12481
12482 get_phys = numap(m_ptr->PROC_NR, (vir_bytes) m_ptr->ADDRESS,
12483 sizeof(sp->tstat));
12484 if (get_phys == 0) return(EINVAL);
12485
12486 if (sp->tstat.mt_dsreg == DS_OK) {
12487 /* Old error data is never cleared (until now). */
12488 sp->tstat.mt_erreg = 0;
12489 sp->tstat.mt_resid = 0;
12490 }
12491 phys_copy(vir2phys(&sp->tstat), get_phys,
12492 (phys_bytes) sizeof(sp->tstat));
12493 } else {
12494 /* Not implemented. */
12495 return(ENOTTY);
12496 }
12497 return(OK);
12498 }
12501 /*===========================================================================*
12502 * scsi_simple *
12503 *===========================================================================*/
12504 PRIVATE int scsi_simple(opcode, count)
12505 int opcode; /* SCSI opcode */
12506 int count; /* count or flag */
12507 {
12508 /* The average group 0 SCSI command with just a simple flag or count. */
12509
12510 vir_bytes len = 0; /* Sometimes a buffer is used. */
12511
12512 group0();
12513 rq->ccb.opcode = CCB_INIT;
12514 ccb_cmd0(rq).scsi_op = opcode;
12515
12516 /* Fill in the count argument at the proper place. */
12517 switch (opcode) {
12518 case SCSI_REQSENSE:
12519 case SCSI_INQUIRY:
12520 case SCSI_MDSENSE:
12521 case SCSI_MDSELECT:
12522 ccb_cmd0(rq).nblocks = count;
12523 len = count;
12524 break;
12525
12526 case SCSI_STRTSTP:
12527 /* SCSI_LOADUNLD: (synonym) */
12528 ccb_cmd0(rq).nblocks = count;
12529 break;
.Ep 146 src/kernel/aha_scsi.c
12530
12531 case SCSI_RDLIMITS:
12532 len = count;
12533 break;
12534
12535 case SCSI_WREOF:
12536 h2b24(ccb_cmd0(rq).trlength, (long) count);
12537 break;
12538
12539 case SCSI_REWIND:
12540 case SCSI_ERASE:
12541 ccb_cmd0(rq).fixed = count;
12542 break;
12543 }
12544 return(scsi_command(tmp_phys, len));
12545 }
12548 /*===========================================================================*
12549 * group0 *
12550 *===========================================================================*/
12551 PRIVATE void group0()
12552 {
12553 /* Prepare the ccb for a group 0 SCSI command. */
12554
12555 rq->ccb.cmdlen = sizeof(cdb0_t);
12556
12557 /* Clear cdb to zeros the ugly way. */
12558 * (u32_t *) (rq->ccb.cmd + 0) = 0;
12559 * (u16_t *) (rq->ccb.cmd + 4) = 0;
12560 }
12563 /*===========================================================================*
12564 * group1 *
12565 *===========================================================================*/
12566 PRIVATE void group1()
12567 {
12568 rq->ccb.cmdlen = sizeof(cdb1_t);
12569 * (u32_t *) (rq->ccb.cmd + 0) = 0;
12570 * (u32_t *) (rq->ccb.cmd + 4) = 0;
12571 * (u16_t *) (rq->ccb.cmd + 8) = 0;
12572 }
12575 /*===========================================================================*
12576 * scsi_command *
12577 *===========================================================================*/
12578 PRIVATE int scsi_command(data, len)
12579 phys_bytes data;
12580 vir_bytes len;
12581 {
12582 /* Execute a SCSI command and return the results. Unlike most other routines,
12583 * this routine returns the sense key of a SCSI command instead of OK or EIO.
12584 */
12585 struct scsi *sp = s_sp;
12586 int key;
12587 message intr_mess;
12588
12589 rq->ccb.addrcntl = ccb_scid(s_sp->targ) | ccb_lun(s_sp->lun);
.Op 147 src/kernel/aha_scsi.c
12590
12591 if (rq->ccb.opcode == CCB_SCATTER) {
12592 /* Device read/write; add checks and use scatter/gather vector. */
12593 rq->ccb.addrcntl |= s_opcode == DEV_READ ? CCB_INCHECK : CCB_OUTCHECK;
12594 data = vir2phys(rq->dmalist);
12595 len = (byte *) rq->dmaptr - (byte *) rq->dmalist;
12596 if (aha_model == AHA1540) {
12597 /* A plain 1540 can't do s/g. */
12598 rq->ccb.opcode = CCB_INIT;
12599 data = b2h24(rq->dmalist[0].dataptr);
12600 len = b2h24(rq->dmalist[0].datalen);
12601 }
12602 }
12603 h2b24(rq->ccb.datalen, (u32_t) len);
12604 h2b24(rq->ccb.dataptr, data);
12605 dump_scsi_cmd();
12606
12607 mailbox[0].status = AHA_MBOXSTART;
12608
12609 out_byte(AHA_DATAREG, AHACOM_STARTSCSI); /* hey, you've got mail! */
12610
12611 /* Wait for the SCSI command to complete. */
12612 while (mailbox[1].status == AHA_MBOXFREE) {
12613 /* No mail yet, wait for an interrupt. */
12614 receive(HARDWARE, &intr_mess);
12615 }
12616 mailbox[1].status = AHA_MBOXFREE; /* free up inbox */
12617
12618 /* Check the results of the operation. */
12619 if (rq->ccb.hastat != 0) {
12620 /* Weird host adapter status. */
12621 printf("%s: host adapter error 0x%02x%sn", s_name(), rq->ccb.hastat,
12622 rq->ccb.hastat == HST_TIMEOUT ? " (Selection timeout)" : "");
12623 errordump();
12624 if (sp->devtype == SCSI_DEVTAPE) sp->tstat.mt_dsreg = DS_ERR;
12625 memset((void *) &ccb_sense(rq), 0, sizeof(sense_t));
12626 return(SENSE_HARDWARE);
12627 }
12628
12629 if (rq->ccb.tarstat != 0) {
12630 /* A SCSI error has occurred. */
12631 sense_t *sense = &ccb_sense(rq);
12632
12633 if (sense->len < 2) {
12634 /* No additional code and qualifier, zero them. */
12635 sense->add_code = sense->add_qual = 0;
12636 }
12637
12638 /* Check sense data, report error if interesting. */
12639 if (rq->ccb.tarstat == TST_CHECK) {
12640 if ((sense->errc & 0x7E) == 0x70) {
12641 /* Standard SCSI error. */
12642 key = sense->key;
12643 } else {
12644 /* Blame the vendor for any other nonsense. */
12645 key = SENSE_VENDOR;
12646 }
12647 } else {
12648 if (rq->ccb.tarstat == TST_LUNBUSY) {
12649 /* Logical unit is too busy to react... */
.Ep 148 src/kernel/aha_scsi.c
12650 key = SENSE_NOT_READY;
12651 } else {
12652 /* The adapter shoudn't do this... */
12653 key = SENSE_HARDWARE;
12654 }
12655 memset((void *) sense, 0, sizeof(sense_t));
12656 }
12657
12658 if (sense_serious(sense_key(key))) {
12659 /* Something bad happened. */
12660 printf("%s: error on command 0x%02x, ", s_name(),
12661 rq->ccb.cmd[0]);
12662 if (rq->ccb.tarstat != TST_CHECK) {
12663 printf("target status 0x%02xn", rq->ccb.tarstat);
12664 } else {
12665 printf("sense key 0x%02x (%s), additional 0x%02x%02xn",
12666 sense->key,
12667 str_scsi_sense[sense_key(key)],
12668 sense->add_code, sense->add_qual);
12669 }
12670 errordump();
12671 }
12672
12673 if (sp->devtype == SCSI_DEVTAPE) {
12674 /* Store details of tape error. */
12675 sp->tstat.mt_dsreg = DS_ERR;
12676 sp->tstat.mt_erreg = key;
12677 sp->tstat.mt_resid = b2h32(sense->info);
12678 }
12679
12680 /* Keep only the ILI, EOM and EOF bits of key 0. */
12681 if (sense_key(key) != SENSE_NO_SENSE) key = sense_key(key);
12682
12683 return(key);
12684 }
12685 return(SENSE_NO_SENSE);
12686 }
12689 /*===========================================================================*
12690 * aha_command *
12691 *===========================================================================*/
12692 PRIVATE void aha_command(outlen, outptr, inlen, inptr)
12693 int outlen, inlen;
12694 byte *outptr, *inptr;
12695 {
12696 /* Send a low level command to the host adapter. */
12697 int i;
12698