* Copyright (c) 1996 Ludd, University of Lule}, Sweden.

/* $NetBSD: vsbus.h,v 1.21 2022/12/12 18:22:32 jakllsch Exp $ */
/*
* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* This code is derived from software contributed to Ludd by Bertram Barth.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Generic definitions for the (virtual) vsbus. contains common info
* used by all VAXstations.
*/

#ifndef _VAX_VSBUS_H_
#define _VAX_VSBUS_H_

#include <machine/bus.h>
#include <machine/sgmap.h>

struct vsbus_attach_args {
vaddr_t va_addr; /* virtual CSR address */
paddr_t va_paddr; /* physical CSR address */
short va_br; /* Interrupt level */
short va_cvec; /* Interrupt vector address */
u_char va_maskno; /* Interrupt vector in mask */
vaddr_t va_dmaaddr; /* DMA area address */
vsize_t va_dmasize; /* DMA area size */
bus_space_tag_t va_memt;
bus_dma_tag_t va_dmat;
};

/*
* Some chip addresses and constants, same on all VAXstations.
*/
#define VS_CFGTST 0x20020000 /* config register */
#define VS_REGS 0x20080000 /* Misc CPU internal regs */
#define VS_REGS_KA49 0x25c00000 /* ... same, on 512KB ROM systems */
#define NI_ADDR 0x20090000 /* Ethernet address */
#define DZ_CSR 0x200a0000 /* DZ11-compatible chip csr */
#define DZ_CSR_KA49 0x25000000 /* ... same, on 512KB ROM systems */
#define VS_CLOCK 0x200b0000 /* clock chip address */
#define SCA_REGS 0x200c0000 /* disk device addresses */
#define SCA_REGS_KA49 0x26000000 /* ... same, on 512KB ROM systems */
#define NI_BASE 0x200e0000 /* LANCE CSRs */
#define NI_IOSIZE (128 * VAX_NBPG) /* IO address size */

#define KA49_SCSIMAP 0x27000000 /* KA49 SCSI SGMAP */
/*
* Small monochrome graphics framebuffer, present on all machines.
*/
#define SMADDR 0x30000000
#define SMSIZE 0x20000 /* Actually 256k, only 128k used */

struct vsbus_softc {
device_t sc_dev;
volatile u_char *sc_intmsk; /* Mask register */
volatile u_char *sc_intclr; /* Clear interrupt register */
volatile u_char *sc_intreq; /* Interrupt request register */
u_char sc_mask; /* Interrupts to enable after autoconf */
vaddr_t sc_vsregs; /* Where the VS_REGS are mapped */
vaddr_t sc_dmaaddr; /* Mass storage virtual DMA area */
vsize_t sc_dmasize; /* Size of the DMA area */

bus_space_tag_t sc_iot;
struct vax_bus_dma_tag sc_dmatag;
struct vax_sgmap sc_sgmap;
};

struct vsbus_dma {
SIMPLEQ_ENTRY(vsbus_dma) vd_q;
void (*vd_go)(void *);
void *vd_arg;
};

#ifdef _KERNEL
void vsbus_dma_init(struct vsbus_softc *, unsigned ptecnt);
u_char vsbus_setmask(int);
void vsbus_clrintr(int);
void vsbus_copytoproc(struct proc *, void *, void *, int);
void vsbus_copyfromproc(struct proc *, void *, void *, int);
void vsbus_dma_start(struct vsbus_dma *);
void vsbus_dma_intr(void);
#endif
#endif /* _VAX_VSBUS_H_ */