diff options
Diffstat (limited to 'sys/arch/mvme88k/dev/vsreg.h')
| -rw-r--r-- | sys/arch/mvme88k/dev/vsreg.h | 71 |
1 files changed, 66 insertions, 5 deletions
diff --git a/sys/arch/mvme88k/dev/vsreg.h b/sys/arch/mvme88k/dev/vsreg.h index d722d62e7ea..8adac5f60fe 100644 --- a/sys/arch/mvme88k/dev/vsreg.h +++ b/sys/arch/mvme88k/dev/vsreg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: vsreg.h,v 1.1 1999/05/29 04:41:44 smurph Exp $ */ +/* $OpenBSD: vsreg.h,v 1.2 1999/09/27 18:43:26 smurph Exp $ */ /* * Copyright (c) 1999 Steve Murphree, Jr. * Copyright (c) 1990 The Regents of the University of California. @@ -38,6 +38,7 @@ #if !defined(_M328REG_H_) #define _M328REG_H_ + typedef struct LONGV { u_short msw; @@ -161,6 +162,52 @@ typedef struct mcsb /**************** END Master Control Status Block (MCSB) *******************/ +/**************** 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 *******************/ /**************** Host Semaphore Block (HSB) *******************/ @@ -388,6 +435,7 @@ typedef struct csb #define M_ADR_TRANS 0x0C00 /* transfer type */ #define M_ADR_MEMT 0x0300 /* memory type */ #define M_ADR_MOD 0x00FF /* VME address modifier */ +#define M_ADR_SG_LINK 0x8000 /* Scatter/Gather Link bit */ /* * defines for IOPB Unit Address on SCSI Bus @@ -412,8 +460,7 @@ typedef struct short_iopb volatile u_short iopb_ADDR; /* IOPB Address type and modifer */ volatile LONGV iopb_BUFF; /* IOPB Buffer Address */ volatile LONGV iopb_LENGTH; /* IOPB Max-Transfer Length */ - volatile u_short iopb_RES2; /* IOPB Reserved word */ - volatile u_short iopb_RES3; /* IOPB Reserved word */ + volatile LONGV iopb_SGTTL; /* IOPB Scatter/Gather Total Transfer len */ volatile u_short iopb_RES4; /* IOPB Reserved word */ volatile u_short iopb_UNIT; /* IOPB Unit address on SCSI bus */ } M328_short_IOPB; @@ -431,8 +478,7 @@ typedef struct iopb volatile u_short iopb_ADDR; /* IOPB Address type and modifer */ volatile LONGV iopb_BUFF; /* IOPB Buffer Address */ volatile LONGV iopb_LENGTH; /* IOPB Max-Transfer Length */ - volatile u_short iopb_RES2; /* IOPB Reserved word */ - volatile u_short iopb_RES3; /* IOPB Reserved word */ + volatile LONGV iopb_SGTTL; /* IOPB Scatter/Gather Total Transfer len */ volatile u_short iopb_RES4; /* IOPB Reserved word */ volatile u_short iopb_UNIT; /* IOPB Unit address on SCSI bus */ u_short iopb_SCSI[S_IOPB_RES/2]; /* IOPB SCSI words for pass thru */ @@ -596,6 +642,7 @@ typedef struct ipsg #define CNTR_ISSUE_ABORT 0x4E /* An abort has been issued */ #define CNTR_DOWNLOAD_FIRMWARE 0x4F /* Download firmware (COUGAR) */ + /* * Memory types */ @@ -692,4 +739,18 @@ typedef struct ipsg #define D64_MOD ( (TT_D64 << 10) | (MEMTYPE << 8) | ADRM_EXT_S_D64 ) #define SHIO_MOD ( (TT_NORMAL << 10) | (MEMT_SHIO << 8) | ADRM_SHT_N_IO) +/* + * 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 /* _M328REG_H_ */ |