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/* $Id$ */
/* $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__ */
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