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author | scottl <scottl@FreeBSD.org> | 2007-05-16 17:19:47 +0000 |
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committer | scottl <scottl@FreeBSD.org> | 2007-05-16 17:19:47 +0000 |
commit | 1d6b078b4b48f0cb513b0e78393f053c1d5675e8 (patch) | |
tree | c0e785e3cf1e0412787978275ba01c1b752521eb /sys/dev/mfi/mfi_cam.c | |
parent | db8bfe6922eb4d1e975e9ca2491c3a1c41b6bf63 (diff) | |
download | FreeBSD-src-1d6b078b4b48f0cb513b0e78393f053c1d5675e8.zip FreeBSD-src-1d6b078b4b48f0cb513b0e78393f053c1d5675e8.tar.gz |
Add the 'mfip' sub-driver for gaining SCSI-passthrough access to devices
on an MFI controller.
Diffstat (limited to 'sys/dev/mfi/mfi_cam.c')
-rw-r--r-- | sys/dev/mfi/mfi_cam.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/sys/dev/mfi/mfi_cam.c b/sys/dev/mfi/mfi_cam.c new file mode 100644 index 0000000..498064b --- /dev/null +++ b/sys/dev/mfi/mfi_cam.c @@ -0,0 +1,389 @@ +/*- + * Copyright 2007 Scott Long + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_mfi.h" + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/selinfo.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/eventhandler.h> +#include <sys/rman.h> +#include <sys/bus_dma.h> +#include <sys/bio.h> +#include <sys/ioccom.h> +#include <sys/uio.h> +#include <sys/proc.h> +#include <sys/signalvar.h> + +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_debug.h> +#include <cam/cam_sim.h> +#include <cam/cam_xpt_sim.h> +#include <cam/scsi/scsi_all.h> +#include <cam/scsi/scsi_message.h> + +#include <sys/bus.h> +#include <sys/conf.h> +#include <machine/md_var.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <dev/mfi/mfireg.h> +#include <dev/mfi/mfi_ioctl.h> +#include <dev/mfi/mfivar.h> + +struct mfip_softc { + device_t dev; + struct mfi_softc *mfi_sc; + struct cam_devq *devq; + struct cam_sim *sim; + struct cam_path *path; +}; + +static int mfip_probe(device_t); +static int mfip_attach(device_t); +static int mfip_detach(device_t); +static void mfip_cam_action(struct cam_sim *, union ccb *); +static void mfip_cam_poll(struct cam_sim *); +static struct mfi_command * mfip_start(void *); +static void mfip_done(struct mfi_command *cm); + +static devclass_t mfip_devclass; +static device_method_t mfip_methods[] = { + DEVMETHOD(device_probe, mfip_probe), + DEVMETHOD(device_attach, mfip_attach), + DEVMETHOD(device_detach, mfip_detach), + {0, 0} +}; +static driver_t mfip_driver = { + "mfip", + mfip_methods, + sizeof(struct mfip_softc) +}; +DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0); +MODULE_DEPEND(mfip, cam, 1, 1, 1); + +#define ccb_mfip_ptr sim_priv.entries[0].ptr + +static int +mfip_probe(device_t dev) +{ + + device_set_desc(dev, "SCSI Passthrough Bus"); + return (0); +} + +static int +mfip_attach(device_t dev) +{ + struct mfip_softc *sc; + struct mfi_softc *mfisc; + + sc = device_get_softc(dev); + if (sc == NULL) + return (EINVAL); + + mfisc = device_get_softc(device_get_parent(dev)); + sc->dev = dev; + sc->mfi_sc = mfisc; + mfisc->mfi_cam_start = mfip_start; + + if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL) + return (ENOMEM); + + sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc, + device_get_unit(dev), &mfisc->mfi_io_lock, 1, + MFI_SCSI_MAX_CMDS, sc->devq); + if (sc->sim == NULL) { + cam_simq_free(sc->devq); + device_printf(dev, "CAM SIM attach failed\n"); + return (EINVAL); + } + + mtx_lock(&mfisc->mfi_io_lock); + if (xpt_bus_register(sc->sim, 0) != 0) { + device_printf(dev, "XPT bus registration failed\n"); + cam_sim_free(sc->sim, FALSE); + cam_simq_free(sc->devq); + mtx_unlock(&mfisc->mfi_io_lock); + return (EINVAL); + } + mtx_unlock(&mfisc->mfi_io_lock); + + return (0); +} + +static int +mfip_detach(device_t dev) +{ + struct mfip_softc *sc; + + sc = device_get_softc(dev); + if (sc == NULL) + return (EINVAL); + + if (sc->sim != NULL) { + mtx_lock(&sc->mfi_sc->mfi_io_lock); + xpt_bus_deregister(cam_sim_path(sc->sim)); + cam_sim_free(sc->sim, FALSE); + mtx_unlock(&sc->mfi_sc->mfi_io_lock); + } + + if (sc->devq != NULL) + cam_simq_free(sc->devq); + + return (0); +} + +static void +mfip_cam_action(struct cam_sim *sim, union ccb *ccb) +{ + struct mfip_softc *sc = cam_sim_softc(sim); + struct mfi_softc *mfisc = sc->mfi_sc; + + mtx_assert(&mfisc->mfi_io_lock, MA_OWNED); + + switch (ccb->ccb_h.func_code) { + case XPT_PATH_INQ: + { + struct ccb_pathinq *cpi = &ccb->cpi; + + cpi->version_num = 1; + cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; + cpi->target_sprt = 0; + cpi->hba_misc = PIM_NOBUSRESET; + cpi->hba_eng_cnt = 0; + cpi->max_target = MFI_SCSI_MAX_TARGETS; + cpi->max_lun = MFI_SCSI_MAX_LUNS; + cpi->initiator_id = MFI_SCSI_INITIATOR_ID; + strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); + strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); + strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); + cpi->unit_number = cam_sim_unit(sim); + cpi->bus_id = cam_sim_bus(sim); + cpi->base_transfer_speed = 150000; + cpi->transport = XPORT_SPI; + cpi->transport_version = 2; + cpi->protocol = PROTO_SCSI; + cpi->protocol_version = SCSI_REV_2; + cpi->ccb_h.status = CAM_REQ_CMP; + break; + } + case XPT_RESET_BUS: + ccb->ccb_h.status = CAM_REQ_CMP; + break; + case XPT_RESET_DEV: + ccb->ccb_h.status = CAM_REQ_CMP; + break; + case XPT_GET_TRAN_SETTINGS: + { + struct ccb_trans_settings_scsi *scsi = + &ccb->cts.proto_specific.scsi; + struct ccb_trans_settings_spi *spi = + &ccb->cts.xport_specific.spi; + + ccb->cts.protocol = PROTO_SCSI; + ccb->cts.protocol = SCSI_REV_2; + ccb->cts.transport = XPORT_SPI; + ccb->cts.transport_version = 2; + if (ccb->ccb_h.target_lun != CAM_LUN_WILDCARD) { + scsi->valid = CTS_SCSI_VALID_TQ; + spi->valid |= CTS_SPI_VALID_DISC; + } else + scsi->valid = 0; + ccb->ccb_h.status = CAM_REQ_CMP; + break; + } + case XPT_SET_TRAN_SETTINGS: + ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; + break; + case XPT_SCSI_IO: + { + struct ccb_hdr *ccbh = &ccb->ccb_h; + struct ccb_scsiio *csio = &ccb->csio; + + ccbh->status = CAM_REQ_INPROG; + if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) { + ccbh->status = CAM_REQ_INVALID; + break; + } + if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + if (ccbh->flags & CAM_DATA_PHYS) { + ccbh->status = CAM_REQ_INVALID; + break; + } + if (ccbh->flags & CAM_SCATTER_VALID) { + ccbh->status = CAM_REQ_INVALID; + break; + } + } + + ccbh->ccb_mfip_ptr = sc; + TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe); + mfi_startio(mfisc); + return; + } + default: + ccb->ccb_h.status = CAM_REQ_INVALID; + break; + } + + xpt_done(ccb); + return; +} + +static struct mfi_command * +mfip_start(void *data) +{ + union ccb *ccb = data; + struct ccb_hdr *ccbh = &ccb->ccb_h; + struct ccb_scsiio *csio = &ccb->csio; + struct mfip_softc *sc; + struct mfi_pass_frame *pt; + struct mfi_command *cm; + + sc = ccbh->ccb_mfip_ptr; + + if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL) + return (NULL); + + pt = &cm->cm_frame->pass; + pt->header.cmd = MFI_CMD_PD_SCSI_IO; + pt->header.cmd_status = 0; + pt->header.scsi_status = 0; + pt->header.target_id = ccbh->target_id; + pt->header.lun_id = ccbh->target_lun; + pt->header.flags = 0; + pt->header.timeout = 0; + pt->header.data_len = csio->dxfer_len; + pt->header.sense_len = MFI_SENSE_LEN; + pt->header.cdb_len = csio->cdb_len; + pt->sense_addr_lo = cm->cm_sense_busaddr; + pt->sense_addr_hi = 0; + if (ccbh->flags & CAM_CDB_POINTER) + bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len); + else + bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len); + cm->cm_complete = mfip_done; + cm->cm_private = ccb; + cm->cm_sg = &pt->sgl; + cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE; + cm->cm_data = csio->data_ptr; + cm->cm_len = csio->dxfer_len; + switch (ccbh->flags & CAM_DIR_MASK) { + case CAM_DIR_IN: + cm->cm_flags = MFI_CMD_DATAIN; + break; + case CAM_DIR_OUT: + cm->cm_flags = MFI_CMD_DATAOUT; + break; + case CAM_DIR_NONE: + default: + cm->cm_data = NULL; + cm->cm_len = 0; + cm->cm_flags = 0; + break; + } + + TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe); + return (cm); +} + +static void +mfip_done(struct mfi_command *cm) +{ + union ccb *ccb = cm->cm_private; + struct ccb_hdr *ccbh = &ccb->ccb_h; + struct ccb_scsiio *csio = &ccb->csio; + struct mfip_softc *sc; + struct mfi_pass_frame *pt; + + sc = ccbh->ccb_mfip_ptr; + pt = &cm->cm_frame->pass; + + switch (pt->header.cmd_status) { + case MFI_STAT_OK: + { + uint8_t command, device; + + ccbh->status = CAM_REQ_CMP; + csio->scsi_status = pt->header.scsi_status; + if (ccbh->flags & CAM_CDB_POINTER) + command = ccb->csio.cdb_io.cdb_ptr[0]; + else + command = ccb->csio.cdb_io.cdb_bytes[0]; + if (command == INQUIRY) { + device = ccb->csio.data_ptr[0] & 0x1f; + if ((device == T_DIRECT) || (device == T_PROCESSOR)) + csio->data_ptr[0] = + (device & 0xe0) | T_NODEVICE; + } + break; + } + case MFI_STAT_SCSI_DONE_WITH_ERROR: + { + int sense_len; + + ccbh->status = CAM_REQ_CMP_ERR | CAM_AUTOSNS_VALID; + csio->scsi_status = pt->header.scsi_status; + sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data)); + bzero(&csio->sense_data, sizeof(struct scsi_sense_data)); + bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len); + break; + } + case MFI_STAT_DEVICE_NOT_FOUND: + ccbh->status = CAM_DEV_NOT_THERE; + break; + case MFI_STAT_SCSI_IO_FAILED: + ccbh->status = CAM_REQ_CMP_ERR; + csio->scsi_status = pt->header.scsi_status; + break; + default: + ccbh->status = CAM_REQ_CMP_ERR; + csio->scsi_status = pt->header.scsi_status; + break; + } + + mfi_release_command(cm); + xpt_done(ccb); +} + +static void +mfip_cam_poll(struct cam_sim *sim) +{ + return; +} + |