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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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#ifndef ISA_IDS_H
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#define ISA_IDS_H
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/*
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* This file defines IDs as used by ISAPnP and EISA devices. These
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* IDs have the format:
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*
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* vendor byte 0 bit 7 must be zero
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* bits 6-2 first vendor char in compressed ASCII
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* bits 1-0 second vendor char in compressed ASCII (bits 4-3)
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* byte 1 bits 7-5 second vendor char in compressed ASCII (bits 2-0)
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* bits 4-0 third vendor char in compressed ASCII
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* product byte 0 bits 7-4 first hex digit of product number
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* bits 3-0 second hex digit of product number
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* byte 1 bits 7-4 third hex digit of product number
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* bits 3-0 hex digit of revision level
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*
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*/
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#include "stdint.h"
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/*
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* Construct a vendor ID from three ASCII characters
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*
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*/
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#define ISA_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\
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((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
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((((c)-'A'+1)&0x1f)<<8))
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#define ISAPNP_VENDOR(a,b,c) ISA_VENDOR(a,b,c)
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#define EISA_VENDOR(a,b,c) ISA_VENDOR(a,b,c)
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#define GENERIC_ISAPNP_VENDOR ISAPNP_VENDOR('P','N','P')
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/*
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* Extract product ID and revision from combined product field
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*
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*/
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#define ISA_PROD_ID(product) ( (product) & 0xf0ff )
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#define ISA_PROD_REV(product) ( ( (product) & 0x0f00 ) >> 8 )
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/* Functions in isa_ids.c */
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extern char * isa_id_string ( uint16_t vendor, uint16_t product );
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#endif /* ISA_IDS_H */
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