diff options
Diffstat (limited to 'sys/arch/mvme88k/dev/vsvar.h')
| -rw-r--r-- | sys/arch/mvme88k/dev/vsvar.h | 104 |
1 files changed, 83 insertions, 21 deletions
diff --git a/sys/arch/mvme88k/dev/vsvar.h b/sys/arch/mvme88k/dev/vsvar.h index e645971095c..56440eb28c3 100644 --- a/sys/arch/mvme88k/dev/vsvar.h +++ b/sys/arch/mvme88k/dev/vsvar.h @@ -1,4 +1,4 @@ -/* $OpenBSD: vsvar.h,v 1.1 1999/05/29 04:41:44 smurph Exp $ */ +/* $OpenBSD: vsvar.h,v 1.2 2001/02/01 03:38:16 smurph Exp $ */ /* * Copyright (c) 1999 Steve Murphree, Jr. * Copyright (c) 1990 The Regents of the University of California. @@ -48,6 +48,55 @@ #define LO(x) (u_short)((unsigned long)x & 0x0000FFFF) #define HI(x) (u_short)((unsigned long)x >> 16) #define OFF(x) (u_short)((long)kvtop(x) - (long)kvtop(sc->sc_vsreg)) +#define vs_name(sc) (sc)->sc_dev.dv_xname + +/**************** Scater/Gather Stuff *******************/ + +typedef struct { + union { + unsigned short bytes :16; + #define MAX_SG_BLOCK_SIZE (1<<16) /* the size *has* to be always *smaller* */ + struct { + unsigned short :8; + unsigned short gather :8; + } scatter; + } count; + LONGV address; + unsigned short link :1; + unsigned short :3; + unsigned short transfer_type :2; + /* 0x0 is reserved */ + #define SHORT_TREANSFER 0x1 + #define LONG_TRANSFER 0x2 + #define SCATTER_GATTER_LIST_IN_SHORT_IO 0x3 + unsigned short memory_type :2; + #define NORMAL_TYPE 0x0 + #define BLOCK_MODE 0x1 + /* 0x2 is reserved */ + /* 0x3 is reserved */ + unsigned short address_modifier :8; +} sg_list_element_t; + +typedef sg_list_element_t * scatter_gather_list_t; + +#define MAX_SG_ELEMENTS 64 + +struct m328_sg { + struct m328_sg *up; + int elements; + int level; + struct m328_sg *down[MAX_SG_ELEMENTS]; + sg_list_element_t list[MAX_SG_ELEMENTS]; +}; + +typedef struct m328_sg *M328_SG; + +typedef struct { + struct scsi_xfer *xs; + M328_SG top_sg_list; +} M328_CMD; + +/**************** END Scater/Gather Stuff *******************/ struct vs_tinfo { int cmds; /* #commands processed */ @@ -56,32 +105,32 @@ struct vs_tinfo { int perrs; /* #parity errors */ int senses; /* #request sense commands sent */ ushort lubusy; /* What local units/subr. are busy? */ - u_char flags; - u_char period; /* Period suggestion */ - u_char offset; /* Offset suggestion */ - int avail; /* Is there a device there */ + u_char flags; + u_char period; /* Period suggestion */ + u_char offset; /* Offset suggestion */ + int avail; /* Is there a device there */ } tinfo_t; -struct vs_softc { - struct device sc_dev; - struct intrhand sc_ih_e; - struct intrhand sc_ih_n; - struct evcnt sc_intrcnt_e; - struct evcnt sc_intrcnt_n; +struct vs_softc { + struct device sc_dev; + struct intrhand sc_ih_e; + struct intrhand sc_ih_n; + struct evcnt sc_intrcnt_e; + struct evcnt sc_intrcnt_n; u_short sc_ipl; - u_short sc_evec; - u_short sc_nvec; - struct scsi_link sc_link; /* proto for sub devices */ - u_long sc_chnl; /* channel 0 or 1 for dual bus cards */ - u_long sc_qhp; /* Command queue head pointer */ - struct vsreg *sc_vsreg; + u_short sc_evec; + u_short sc_nvec; + struct scsi_link sc_link; /* proto for sub devices */ + u_long sc_chnl; /* channel 0 or 1 for dual bus cards */ + u_long sc_qhp; /* Command queue head pointer */ + struct vsreg *sc_vsreg; #define SIOP_NACB 8 struct vs_tinfo sc_tinfo[8]; - u_char sc_flags; - u_char sc_sien; - u_char sc_dien; + u_char sc_flags; + u_char sc_sien; + u_char sc_dien; u_char sc_minsync; - struct map *hus_map; + struct map *hus_map; /* one for each target */ struct syncpar { u_char state; @@ -128,5 +177,18 @@ struct vs_softc { void vs_minphys __P((struct buf *bp)); int vs_scsicmd __P((struct scsi_xfer *)); +/* + * Scatter/gather functions + */ + +M328_SG vs_alloc_scatter_gather __P((void)); +void vs_dealloc_scatter_gather __P((M328_SG sg)); +void vs_link_scatter_gather_element __P((sg_list_element_t *element, + register vm_offset_t phys_add, + register int len)); +void vs_link_scatter_gather_list __P((sg_list_element_t *list, + register vm_offset_t phys_add, + register int elements)); +M328_SG vs_build_memory_structure __P((struct scsi_xfer *xs, M328_IOPB *iopb)); #endif /* _M328VAR_H */ |