diff options
Diffstat (limited to 'sys/alpha/tc/tcdsvar.h')
| -rw-r--r-- | sys/alpha/tc/tcdsvar.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sys/alpha/tc/tcdsvar.h b/sys/alpha/tc/tcdsvar.h new file mode 100644 index 0000000..e1c15e8 --- /dev/null +++ b/sys/alpha/tc/tcdsvar.h @@ -0,0 +1,111 @@ +/* $Id$ */ +/* $NetBSD: tcdsvar.h,v 1.3.4.1 1996/09/10 17:28:20 cgd Exp $ */ + +/* + * Copyright (c) 1995, 1996 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. + */ + +struct tcds_slotconfig { + /* + * Bookkeeping information + */ + int sc_slot; + struct tcds_softc *sc_tcds; /* to frob TCDS regs */ + struct esp_softc *sc_esp; /* to frob child's regs */ + void (*sc_intrhand) __P((void *)); /* intr. handler */ + void *sc_intrarg; /* intr. handler arg. */ + + /* + * Sets of bits in TCDS CIR and IMER that enable/check + * various things. + */ + u_int32_t sc_resetbits; + u_int32_t sc_intrmaskbits; + u_int32_t sc_intrbits; + u_int32_t sc_dmabits; + u_int32_t sc_errorbits; + + /* + * Pointers to slot-specific DMA resources. + */ + volatile u_int32_t *sc_sda; + volatile u_int32_t *sc_dic; + volatile u_int32_t *sc_dud0; + volatile u_int32_t *sc_dud1; + + /* + * DMA bookkeeping information. + */ + int sc_active; /* DMA active ? */ + int sc_iswrite; /* DMA into main memory? */ + size_t sc_dmasize; + caddr_t *sc_dmaaddr; + size_t *sc_dmalen; +}; + +struct tcdsdev_attach_args { + struct tc_attach_args tcdsda_ta; + struct tcds_slotconfig *tcdsda_sc; + u_int tcdsda_id; + u_int tcdsda_freq; +}; +#define tcdsda_modname tcdsda_ta.ta_modname +#define tcdsda_slot tcdsda_ta.ta_slot +#define tcdsda_offset tcdsda_ta.ta_offset +#define tcdsda_addr tcdsda_ta.ta_addr +#define tcdsda_cookie tcdsda_ta.ta_cookie + +#define TCDS_REG(base, off) \ + (volatile u_int32_t *)TC_DENSE_TO_SPARSE((base) + (off)) + +/* + * TCDS functions. + */ +void tcds_intr_establish __P((struct device *, void *, tc_intrlevel_t, + int (*)(void *), void *)); +void tcds_intr_disestablish __P((struct device *, void *)); +void tcds_dma_enable __P((struct tcds_slotconfig *, int)); +void tcds_scsi_enable __P((struct tcds_slotconfig *, int)); +int tcds_scsi_isintr __P((struct tcds_slotconfig *, int)); +void tcds_scsi_reset __P((struct tcds_slotconfig *)); +int tcds_scsi_iserr __P((struct tcds_slotconfig *sc)); + +/* + * TCDS DMA functions (used the the 53c94 driver) + */ +int tcds_dma_isintr __P((struct tcds_slotconfig *)); +void tcds_dma_reset __P((struct tcds_slotconfig *)); +int tcds_dma_intr __P((struct tcds_slotconfig *)); +int tcds_dma_setup __P((struct tcds_slotconfig *, caddr_t *, size_t *, + int, size_t *)); +void tcds_dma_go __P((struct tcds_slotconfig *)); +int tcds_dma_isactive __P((struct tcds_slotconfig *)); + +/* + * The TCDS (bus) cfdriver, so that subdevices can more + * easily tell what bus they're on. + */ +extern struct cfdriver tcds_cd; |
