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Diffstat (limited to 'sys/alpha/tc/tcvar.h')
| -rw-r--r-- | sys/alpha/tc/tcvar.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/sys/alpha/tc/tcvar.h b/sys/alpha/tc/tcvar.h new file mode 100644 index 0000000..17e7209 --- /dev/null +++ b/sys/alpha/tc/tcvar.h @@ -0,0 +1,200 @@ +/* $Id$ */ +/* $NetBSD: tcvar.h,v 1.13 1998/05/22 21:15:48 thorpej Exp $ */ + +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#ifndef __DEV_TC_TCVAR_H__ +#define __DEV_TC_TCVAR_H__ + +/* + * Definitions for TurboChannel autoconfiguration. + */ + +/* + * In the long run, the following block will go completely away. + * For now, the MI TC code still uses the old TC_IPL_ names + * and not the new IPL_ names. + */ +#if 1 +/* + * Map the new definitions to the old. + */ +#include <machine/intr.h> + +#define tc_intrlevel_t int + +#define TC_IPL_NONE IPL_NONE +#define TC_IPL_BIO IPL_BIO +#define TC_IPL_NET IPL_NET +#define TC_IPL_TTY IPL_TTY +#define TC_IPL_CLOCK IPL_CLOCK +#endif /* 1 */ + + +typedef u_int64_t tc_addr_t; +typedef int32_t tc_offset_t; + +#define tc_mb() alpha_mb() +#define tc_wmb() alpha_wmb() + + +/* + * A junk address to read from, to make sure writes are complete. See + * System Programmer's Manual, section 9.3 (p. 9-4), and sacrifice a + * chicken. + */ +#define tc_syncbus() \ + do { \ + volatile u_int32_t no_optimize; \ + no_optimize = \ + *(volatile u_int32_t *)ALPHA_PHYS_TO_K0SEG(0x00000001f0080220); \ + } while (0) + +#define tc_badaddr(tcaddr) \ + badaddr((void *)(tcaddr), sizeof (u_int32_t)) + +#define TC_SPACE_IND 0xffffffffe0000003 +#define TC_SPACE_DENSE 0x0000000000000000 +#define TC_SPACE_DENSE_OFFSET 0x0000000007fffffc +#define TC_SPACE_SPARSE 0x0000000010000000 +#define TC_SPACE_SPARSE_OFFSET 0x000000000ffffff8 + +#define TC_DENSE_TO_SPARSE(addr) \ + (((addr) & TC_SPACE_IND) | TC_SPACE_SPARSE | \ + (((addr) & TC_SPACE_DENSE_OFFSET) << 1)) + +#define TC_PHYS_TO_UNCACHED(addr) \ + (addr) + +/* + * These functions are private, and may not be called by + * machine-independent code. + */ +void tc_dma_init __P((void)); + +/* + * Address of scatter/gather SRAM on the 3000/500-series. + * + * There is room for 32K entries, yielding 256M of sgva space. + * The page table is readable in both dense and sparse space. + * The page table is writable only in sparse space. + * + * In sparse space, the 32-bit PTEs are followed by 32-bits + * of pad. + */ +#define TC_SGSRAM_DENSE 0x0000001c2800000UL +#define TC_SGSRAM_SPARSE 0x0000001d5000000UL + + +/* + * Description of TurboChannel slots, provided by machine-dependent + * code to the TurboChannel bus driver. + */ +struct tc_slotdesc { + tc_addr_t tcs_addr; + void *tcs_cookie; + int tcs_used; +}; + +/* + * Description of built-in TurboChannel devices, provided by + * machine-dependent code to the TurboChannel bus driver. + */ +struct tc_builtin { + char *tcb_modname; + u_int tcb_slot; + tc_offset_t tcb_offset; + void *tcb_cookie; +}; + +/* + * Arguments used to attach TurboChannel busses. + */ +struct tcbus_attach_args { + char *tba_busname; /* XXX should be common */ +/* bus_space_tag_t tba_memt;*/ + + /* Bus information */ + u_int tba_speed; /* see TC_SPEED_* below */ + u_int tba_nslots; + struct tc_slotdesc *tba_slots; + u_int tba_nbuiltins; + const struct tc_builtin *tba_builtins; + + + /* TC bus resource management; XXX will move elsewhere eventually. */ +/* + void (*tba_intr_establish) __P((struct device *, void *, + tc_intrlevel_t, int (*)(void *), void *)); + void (*tba_intr_disestablish) __P((struct device *, void *)); +*/ +}; + +/* + * Arguments used to attach TurboChannel devices. + */ +struct tc_attach_args { +/* + bus_space_tag_t ta_memt; + bus_dma_tag_t ta_dmat; +*/ + char ta_modname[TC_ROM_LLEN+1]; + u_int ta_slot; + tc_offset_t ta_offset; + tc_addr_t ta_addr; + void *ta_cookie; + u_int ta_busspeed; /* see TC_SPEED_* below */ +}; + +/* + * Interrupt establishment functions. + */ +void tc_intr_establish __P((struct device *, void *, tc_intrlevel_t, + int (*)(void *), void *)); +void tc_intr_disestablish __P((struct device *, void *)); + +#if 0 +#include "locators.h" +/* + * Easy to remember names for TurboChannel device locators. + */ +#define tccf_slot cf_loc[TCCF_SLOT] /* slot */ +#define tccf_offset cf_loc[TCCF_OFFSET] /* offset */ + +#endif + +#define TCCF_SLOT_UNKNOWN TCCF_SLOT_DEFAULT +#define TCCF_OFFSET_UNKNOWN TCCF_OFFSET_DEFAULT + +/* + * Miscellaneous definitions. + */ +#define TC_SPEED_12_5_MHZ 0 /* 12.5MHz TC bus */ +#define TC_SPEED_25_MHZ 1 /* 25MHz TC bus */ + +#endif /* __DEV_TC_TCVAR_H__ */ |
