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/* ** linux/machw.h -- This header defines some macros and pointers for ** the various Macintosh custom hardware registers. ** ** Copyright 1997 by Michael Schmitz ** ** This file is subject to the terms and conditions of the GNU General Public ** License. See the file COPYING in the main directory of this archive ** for more details. ** */ #ifndef _ASM_MACHW_H_ #define _ASM_MACHW_H_ /* * head.S maps the videomem to VIDEOMEMBASE */ #define VIDEOMEMBASE 0xf0000000 #define VIDEOMEMSIZE (4096*1024) #define VIDEOMEMMASK (-4096*1024) #ifndef __ASSEMBLY__ #include <linux/types.h> #if 0 /* Mac SCSI Controller 5380 */ #define MAC_5380_BAS (0x50F10000) /* This is definitely wrong!! */ struct MAC_5380 { u_char scsi_data; u_char char_dummy1; u_char scsi_icr; u_char char_dummy2; u_char scsi_mode; u_char char_dummy3; u_char scsi_tcr; u_char char_dummy4; u_char scsi_idstat; u_char char_dummy5; u_char scsi_dmastat; u_char char_dummy6; u_char scsi_targrcv; u_char char_dummy7; u_char scsi_inircv; }; #define mac_scsi ((*(volatile struct MAC_5380 *)MAC_5380_BAS)) /* ** SCC Z8530 */ #define MAC_SCC_BAS (0x50F04000) struct MAC_SCC { u_char cha_a_ctrl; u_char char_dummy1; u_char cha_a_data; u_char char_dummy2; u_char cha_b_ctrl; u_char char_dummy3; u_char cha_b_data; }; # define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS)) #endif /* hardware stuff */ #define MACHW_DECLARE(name) unsigned name : 1 #define MACHW_SET(name) (mac_hw_present.name = 1) #define MACHW_PRESENT(name) (mac_hw_present.name) struct mac_hw_present { /* video hardware */ /* sound hardware */ /* disk storage interfaces */ MACHW_DECLARE(MAC_SCSI_80); /* Directly mapped NCR5380 */ MACHW_DECLARE(MAC_SCSI_96); /* 53c9[46] */ MACHW_DECLARE(MAC_SCSI_96_2); /* 2nd 53c9[46] Q900 and Q950 */ MACHW_DECLARE(IDE); /* IDE Interface */ /* other I/O hardware */ MACHW_DECLARE(SCC); /* Serial Communications Contr. */ /* DMA */ MACHW_DECLARE(SCSI_DMA); /* DMA for the NCR5380 */ /* real time clocks */ MACHW_DECLARE(RTC_CLK); /* clock chip */ /* supporting hardware */ MACHW_DECLARE(VIA1); /* Versatile Interface Ad. 1 */ MACHW_DECLARE(VIA2); /* Versatile Interface Ad. 2 */ MACHW_DECLARE(RBV); /* Versatile Interface Ad. 2+ */ /* NUBUS */ MACHW_DECLARE(NUBUS); /* NUBUS */ }; extern struct mac_hw_present mac_hw_present; #endif /* __ASSEMBLY__ */ #endif /* linux/machw.h */ |