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Add the caching parameters mode page.

This commit is contained in:
thorpej 2001-09-01 02:39:21 +00:00
parent f2742305e4
commit 2cf7638731
1 changed files with 18 additions and 1 deletions
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19
sys/dev/scsipi/scsi_disk.h
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@ -1,4 +1,4 @@
/* $NetBSD: scsi_disk.h,v 1.17 1998/10/30 02:07:15 thorpej Exp $ */
/* $NetBSD: scsi_disk.h,v 1.18 2001/09/01 02:39:21 thorpej Exp $ */
/*
* SCSI-specific interface description
@ -265,4 +265,21 @@ union scsi_disk_pages {
u_int8_t reserved3;
u_int8_t reserved4;
} flex_geometry;
struct page_caching {
u_int8_t pg_code; /* page code (should be 8) */
u_int8_t pg_length; /* page length (should be 0x0a) */
u_int8_t flags; /* cache parameter flags */
#define CACHING_RCD 0x01 /* read cache disable */
#define CACHING_MF 0x02 /* multiplcation factor */
#define CACHING_WCE 0x04 /* write cache enable (write-back) */
u_int8_t ret_prio; /* retention priority */
#define READ_RET_PRIO_SHIFT 4
#define RET_PRIO_DONT_DISTINGUISH 0x0
#define RET_PRIO_REPLACE_READ_WRITE 0x1
#define RET_PRIO_REPLACE_PREFETCH 0xf
u_int8_t dis_prefetch_xfer_len[2];
u_int8_t min_prefetch[2];
u_int8_t max_prefetch[2];
u_int8_t max_prefetch_ceiling[2];
};
};