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NetBSD/sys/dev/pci/mlyvar.h

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/* $NetBSD: mlyvar.h,v 1.1 2001/07/30 19:59:07 ad Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran, Thor Lancelot Simon, and Eric Haszlakiewicz.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*-
* Copyright (c) 2000, 2001 Michael Smith
* Copyright (c) 2000 BSDi
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* from FreeBSD: mlyvar.h,v 1.3 2001/07/14 00:12:22 msmith Exp
*/
#ifndef _PCI_MLYVAR_H_
#define _PCI_MLYVAR_H_
/*
* The firmware interface allows for a 16-bit command identifier. We cap
* ourselves at a reasonable limit. Note that we reserve a small number of
* CCBs for control operations.
*/
#define MLY_MAX_CCBS 256
#define MLY_CCBS_RESV 4
/*
* The firmware interface allows for a 16-bit s/g list length. We limit
* ourselves to a reasonable maximum.
*/
#define MLY_MAX_SEGS 17
#define MLY_SGL_SIZE (MLY_MAX_SEGS * sizeof(struct mly_sg_entry))
#define MLY_MAX_XFER ((MLY_MAX_SEGS - 1) * PAGE_SIZE)
/*
* The interval at which we poke the controller for status updates (in
* seconds).
*/
#define MLY_PERIODIC_INTERVAL 5
/*
* Command slot regulation. We can't use slot 0 due to the memory mailbox
* implementation.
*/
#define MLY_SLOT_START 1
#define MLY_SLOT_MAX (MLY_SLOT_START + MLY_MAX_CCBS)
/*
* Per-device structure, used to save persistent state on devices.
*
* Note that this isn't really Bus/Target/Lun since we don't support lun !=
* 0 at this time.
*/
struct mly_btl {
int mb_flags;
int mb_state; /* See 8.1 */
int mb_type; /* See 8.2 */
/* Physical devices only. */
int mb_speed; /* Interface transfer rate */
int mb_width; /* Interface width */
};
#define MLY_BTL_PHYSICAL 0x01 /* physical device */
#define MLY_BTL_LOGICAL 0x02 /* logical device */
#define MLY_BTL_PROTECTED 0x04 /* I/O not allowed */
#define MLY_BTL_TQING 0x08 /* tagged queueing */
#define MLY_BTL_SCANNING 0x10 /* scan in progress */
#define MLY_BTL_RESCAN 0x20 /* need to re-scan */
/*
* Per-command context.
*/
struct mly_softc;
struct mly_ccb {
union {
SLIST_ENTRY(mly_ccb) slist;
SIMPLEQ_ENTRY(mly_ccb) simpleq;
} mc_link; /* list linkage */
u_int mc_slot; /* command slot we occupy */
u_int mc_flags; /* status flags */
u_int mc_status; /* command completion status */
u_int mc_sense; /* sense data length */
int32_t mc_resid; /* I/O residual count */
union mly_cmd_packet *mc_packet;/* our controller command */
bus_addr_t mc_packetphys; /* physical address of the mapped packet */
void *mc_data; /* data buffer */
size_t mc_length; /* data length */
bus_dmamap_t mc_datamap; /* DMA map for data */
u_int mc_sgoff; /* S/G list offset */
void (*mc_complete)(struct mly_softc *, struct mly_ccb *);
void *mc_private;
};
#define MLY_CCB_DATAIN 0x01
#define MLY_CCB_DATAOUT 0x02
#define MLY_CCB_MAPPED 0x04
#define MLY_CCB_COMPLETE 0x08
/*
* Per-controller context.
*/
struct mly_softc {
/* Generic device info. */
struct device mly_dv;
bus_space_handle_t mly_ioh;
bus_space_tag_t mly_iot;
bus_dma_tag_t mly_dmat;
void *mly_ih;
/* Scatter-gather lists. */
struct mly_sg_entry *mly_sg;
bus_addr_t mly_sg_busaddr;
bus_dma_tag_t mly_sg_dmat;
bus_dmamap_t mly_sg_dmamap;
bus_dma_segment_t mly_sg_seg;
/* Memory mailbox. */
struct mly_mmbox *mly_mmbox;
bus_addr_t mly_mmbox_busaddr;
bus_dma_tag_t mly_mmbox_dmat;
bus_dmamap_t mly_mmbox_dmamap;
bus_dma_segment_t mly_mmbox_seg;
u_int mly_mmbox_cmd_idx;
u_int mly_mmbox_sts_idx;
/* Command packets. */
union mly_cmd_packet *mly_pkt;
bus_addr_t mly_pkt_busaddr;
bus_dma_tag_t mly_pkt_dmat;
bus_dmamap_t mly_pkt_dmamap;
bus_dma_segment_t mly_pkt_seg;
/* Command management. */
struct mly_ccb *mly_ccbs;
SLIST_HEAD(,mly_ccb) mly_ccb_free;
SIMPLEQ_HEAD(,mly_ccb) mly_ccb_queue;
u_int mly_ncmds;
/* Controller hardware interface. */
u_int mly_hwif;
u_int mly_doorbell_true;
u_int mly_cmd_mailbox;
u_int mly_status_mailbox;
u_int mly_idbr;
u_int mly_odbr;
u_int mly_error_status;
u_int mly_interrupt_status;
u_int mly_interrupt_mask;
/* Controller features, limits and status. */
u_int mly_state;
struct mly_ioctl_getcontrollerinfo *mly_controllerinfo;
struct mly_param_controller *mly_controllerparam;
struct mly_btl mly_btl[MLY_MAX_CHANNELS][MLY_MAX_TARGETS];
/* Health monitoring. */
u_int mly_event_change;
u_int mly_event_counter;
u_int mly_event_waiting;
struct proc *mly_thread;
/* SCSI mid-layer connection. */
struct scsipi_adapter mly_adapt;
struct scsipi_channel mly_chans[MLY_MAX_CHANNELS];
u_int mly_nchans;
};
#define MLY_HWIF_I960RX 0
#define MLY_HWIF_STRONGARM 1
#define MLY_STATE_OPEN 0x01
#define MLY_STATE_MMBOX_ACTIVE 0x02
#define MLY_STATE_INITOK 0x04
/*
* Register access helpers.
*/
static __inline__ u_int8_t mly_inb(struct mly_softc *, int);
static __inline__ u_int16_t mly_inw(struct mly_softc *, int);
static __inline__ u_int32_t mly_inl(struct mly_softc *, int);
static __inline__ void mly_outb(struct mly_softc *, int, u_int8_t);
static __inline__ void mly_outw(struct mly_softc *, int, u_int16_t);
static __inline__ void mly_outl(struct mly_softc *, int, u_int32_t);
static __inline__ int mly_idbr_true(struct mly_softc *, u_int8_t);
static __inline__ int mly_odbr_true(struct mly_softc *, u_int8_t);
static __inline__ int mly_error_valid(struct mly_softc *);
static __inline__ u_int8_t
mly_inb(struct mly_softc *mly, int off)
{
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 1,
BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
return (bus_space_read_1(mly->mly_iot, mly->mly_ioh, off));
}
static __inline__ u_int16_t
mly_inw(struct mly_softc *mly, int off)
{
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 2,
BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
return (bus_space_read_2(mly->mly_iot, mly->mly_ioh, off));
}
static __inline__ u_int32_t
mly_inl(struct mly_softc *mly, int off)
{
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 4,
BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
return (bus_space_read_4(mly->mly_iot, mly->mly_ioh, off));
}
static __inline__ void
mly_outb(struct mly_softc *mly, int off, u_int8_t val)
{
bus_space_write_1(mly->mly_iot, mly->mly_ioh, off, val);
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 1,
BUS_SPACE_BARRIER_WRITE);
}
static __inline__ void
mly_outw(struct mly_softc *mly, int off, u_int16_t val)
{
bus_space_write_2(mly->mly_iot, mly->mly_ioh, off, val);
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 2,
BUS_SPACE_BARRIER_WRITE);
}
static __inline__ void
mly_outl(struct mly_softc *mly, int off, u_int32_t val)
{
bus_space_write_4(mly->mly_iot, mly->mly_ioh, off, val);
bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 4,
BUS_SPACE_BARRIER_WRITE);
}
static __inline__ int
mly_idbr_true(struct mly_softc *mly, u_int8_t mask)
{
u_int8_t val;
val = mly_inb(mly, mly->mly_idbr) ^ mly->mly_doorbell_true;
return ((val & mask) == mask);
}
static __inline__ int
mly_odbr_true(struct mly_softc *mly, u_int8_t mask)
{
return ((mly_inb(mly, mly->mly_odbr) & mask) == mask);
}
static __inline__ int
mly_error_valid(struct mly_softc *mly)
{
u_int8_t val;
val = mly_inb(mly, mly->mly_error_status) ^ mly->mly_doorbell_true;
return ((val & MLY_MSG_EMPTY) == 0);
}
/*
* Bus/target/logical ID-related macros.
*/
#define MLY_LOGDEV_ID(mly, bus, target) \
(((bus) - (mly)->mly_controllerinfo->physical_channels_present) * \
MLY_MAX_TARGETS + (target))
#define MLY_LOGDEV_BUS(mly, logdev) \
(((logdev) / MLY_MAX_TARGETS) + \
(mly)->mly_controllerinfo->physical_channels_present)
#define MLY_LOGDEV_TARGET(mly, logdev) \
((logdev) % MLY_MAX_TARGETS)
#define MLY_BUS_IS_VIRTUAL(mly, bus) \
((bus) >= (mly)->mly_controllerinfo->physical_channels_present)
#define MLY_BUS_IS_VALID(mly, bus) \
(((bus) < (mly)->mly_nchans))
#endif /* !defined _PCI_MLYVAR_H_ */
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