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/* $OpenBSD: mpivar.h,v 1.7 2006/06/01 21:32:15 dlg Exp $ */
/*
* Copyright (c) 2005 David Gwynne <dlg@openbsd.org>
* Copyright (c) 2005 Marco Peereboom <marco@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define MPI_REQUEST_SIZE 512
#define MPI_REPLY_SIZE 128
/*
* this is the max number of sge's we can stuff in a request frame:
* sizeof(scsi_io) + sizeof(sense) + sizeof(sge) * 32 = MPI_REQUEST_SIZE
*/
#define MPI_MAX_SGL 36
struct mpi_dmamem {
bus_dmamap_t mdm_map;
bus_dma_segment_t mdm_seg;
size_t mdm_size;
caddr_t mdm_kva;
};
#define MPI_DMA_MAP(_mdm) ((_mdm)->mdm_map)
#define MPI_DMA_DVA(_mdm) ((_mdm)->mdm_map->dm_segs[0].ds_addr)
#define MPI_DMA_KVA(_mdm) ((void *)(_mdm)->mdm_kva)
struct mpi_ccb_bundle {
struct mpi_msg_scsi_io mcb_io; /* sgl must follow */
struct mpi_sge mcb_sgl[MPI_MAX_SGL];
struct scsi_sense_data mcb_sense;
} __packed;
struct mpi_softc;
struct mpi_ccb {
struct mpi_softc *ccb_sc;
int ccb_id;
struct scsi_xfer *ccb_xs;
bus_dmamap_t ccb_dmamap;
bus_addr_t ccb_offset;
void *ccb_cmd;
bus_addr_t ccb_cmd_dva;
volatile enum {
MPI_CCB_FREE,
MPI_CCB_READY,
MPI_CCB_QUEUED
} ccb_state;
void (*ccb_done)(struct mpi_ccb *);
void *ccb_reply;
u_int32_t ccb_reply_dva;
TAILQ_ENTRY(mpi_ccb) ccb_link;
};
TAILQ_HEAD(mpi_ccb_list, mpi_ccb);
struct mpi_softc {
struct device sc_dev;
struct scsi_link sc_link;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_size_t sc_ios;
bus_dma_tag_t sc_dmat;
u_int8_t sc_porttype;
int sc_maxcmds;
int sc_maxchdepth;
int sc_first_sgl_len;
int sc_max_sgl_len;
int sc_buswidth;
int sc_target;
struct mpi_dmamem *sc_requests;
struct mpi_ccb *sc_ccbs;
struct mpi_ccb_list sc_ccb_free;
struct mpi_dmamem *sc_replies;
};
int mpi_attach(struct mpi_softc *);
void mpi_detach(struct mpi_softc *);
int mpi_intr(void *);
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