709298a10a
burst size when transferring data. - Changed ledma attach code to pay attention to the PROM's notion of what cable type is being used. Note that this patch does not fix the problem recently discussed on port-sparc; in most cases the PROM doesn't know what cable type is being used. The default is now TP rather than AUI, though. A complete fix is forthcoming.
91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/* $NetBSD: dmavar.h,v 1.8 1996/04/22 02:35:00 abrown Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Peter Galbavy. All rights reserved.
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Peter Galbavy.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
struct dma_softc {
|
|
struct device sc_dev; /* us as a device */
|
|
struct sbusdev sc_sd; /* sbus device */
|
|
struct esp_softc *sc_esp; /* my scsi */
|
|
struct le_softc *sc_le; /* my ethernet */
|
|
struct dma_regs *sc_regs; /* the registers */
|
|
int sc_active; /* DMA active ? */
|
|
int sc_rev; /* revision */
|
|
int sc_node; /* PROM node ID */
|
|
int sc_burst; /* DVMA burst size in effect */
|
|
caddr_t sc_dvmakaddr; /* DVMA cookies */
|
|
caddr_t sc_dvmaaddr; /* */
|
|
size_t sc_dmasize;
|
|
caddr_t *sc_dmaaddr;
|
|
size_t *sc_dmalen;
|
|
void (*reset)(struct dma_softc *); /* reset routine */
|
|
void (*enintr)(struct dma_softc *); /* enable interrupts */
|
|
int (*isintr)(struct dma_softc *); /* interrupt ? */
|
|
int (*intr)(struct dma_softc *); /* interrupt ! */
|
|
int (*setup)(struct dma_softc *, caddr_t *, size_t *, int, size_t *);
|
|
void (*go)(struct dma_softc *);
|
|
};
|
|
|
|
#define DMACSR(sc) (sc->sc_regs->csr)
|
|
#define DMADDR(sc) (sc->sc_regs->addr)
|
|
|
|
/*
|
|
* We are not allowed to touch the DMA "flush" and "drain" bits
|
|
* while it is still thinking about a request (DMA_RP).
|
|
*/
|
|
|
|
/*
|
|
* TIME WAIT (to debug hanging machine problem)
|
|
*/
|
|
|
|
#define TIME_WAIT(COND, MSG, SC) { int count = 500000; \
|
|
while (--count > 0 && (COND)) DELAY(1); \
|
|
if (count == 0) { \
|
|
printf("CSR = %lx\n",\
|
|
SC->sc_regs->csr);\
|
|
panic(MSG); } \
|
|
}
|
|
|
|
#define DMAWAIT(sc) TIME_WAIT((sc->sc_regs->csr & D_R_PEND), "DMAWAIT", sc)
|
|
#define DMAWAIT1(sc) TIME_WAIT((sc->sc_regs->csr & D_DRAINING), "DMAWAIT1", sc)
|
|
#define DMAREADY(sc) TIME_WAIT((!(sc->sc_regs->csr & D_DMA_ON)), "DMAREADY", sc)
|
|
|
|
#define DMA_DRAIN(sc) if (sc->sc_rev < DMAREV_2) { \
|
|
DMACSR(sc) |= D_DRAIN; \
|
|
DMAWAIT1(sc); \
|
|
}
|
|
|
|
/* DMA engine functions */
|
|
#define DMA_ENINTR(r) (((r)->enintr)(r))
|
|
#define DMA_ISINTR(r) (((r)->isintr)(r))
|
|
#define DMA_RESET(r) (((r)->reset)(r))
|
|
#define DMA_INTR(r) (((r)->intr)(r))
|
|
#define DMA_ISACTIVE(r) ((r)->sc_active)
|
|
#define DMA_SETUP(a, b, c, d, e) (((a)->setup)(a, b, c, d, e))
|
|
#define DMA_GO(r) (((r)->go)(r))
|