80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
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/*
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* ddi.h Define the structure for linking in I/O drivers into the
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* operating system kernel. This method is currently only
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* used by NET layer drivers, but it will be expanded into
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* a link methos for ALL kernel-resident device drivers.
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*
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* Version: @(#)ddi.h 1.0.2 04/22/93
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*
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* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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*/
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#ifndef _LINUX_DDI_H
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#define _LINUX_DDI_H
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/* DDI control block flags. */
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#define DDI_FREADY 0x10000000 /* device is initialized */
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#define DDI_FPRESENT 0x20000000 /* device hardware is present */
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#define DDI_FBLKDEV 0x00000001 /* device has a BLK spec. file */
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#define DDI_FCHRDEV 0x00000002 /* device has a CHR spec. file */
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/* Various constants. */
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#define DDI_MAXNAME 16 /* length of a DDI ID string */
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/* This structure is used to set up a DDI driver. */
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struct ddconf {
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int ioaddr; /* main I/O (port) address */
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int ioaux; /* auxiliary I/O (HD, AST) */
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int irq; /* IRQ channel */
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int dma; /* DMA channel to use */
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unsigned long memsize; /* size of onboard memory */
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unsigned long memaddr; /* base address of memory */
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};
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/* The DDI device control block. */
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struct ddi_device {
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char *title; /* title of the driver */
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char name[DDI_MAXNAME]; /* unit name of the I/O driver */
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short int unit; /* unit number of this driver */
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short int nunits; /* number of units in driver */
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int (*init)(struct ddi_device *); /* initialization func */
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int (*handler)(int, ...); /* command handler */
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short int major; /* driver major dev number */
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short int minor; /* driver minor dev number */
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unsigned long flags; /* various flags */
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struct ddconf config; /* driver HW setup */
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};
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/* This structure is used to set up networking protocols. */
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struct ddi_proto {
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char *name; /* protocol name */
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void (*init)(struct ddi_proto *); /* initialization func */
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};
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/* This structure is used to link a STREAMS interface. */
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struct iflink {
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char id[DDI_MAXNAME]; /* DDI ID string */
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char stream[DDI_MAXNAME]; /* STREAMS interface name */
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int family; /* address (protocol) family */
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unsigned int flags; /* any flags needed (unused) */
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};
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/* DDI control requests. */
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#define DDIOCSDBG 0x9000 /* set DDI debug level */
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#define DDIOCGNAME 0x9001 /* get DDI ID name */
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#define DDIOCGCONF 0x9002 /* get DDI HW config */
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#define DDIOCSCONF 0x9003 /* set DDI HW config */
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/* DDI global functions. */
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extern void ddi_init(void);
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extern struct ddi_device *ddi_map(const char *id);
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#endif /* _LINUX_DDI_H */
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