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-rw-r--r--sys/dev/mly/mly_cam.c598
1 files changed, 0 insertions, 598 deletions
diff --git a/sys/dev/mly/mly_cam.c b/sys/dev/mly/mly_cam.c
deleted file mode 100644
index c326988..0000000
--- a/sys/dev/mly/mly_cam.c
+++ /dev/null
@@ -1,598 +0,0 @@
-/*-
- * 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.
- *
- * $FreeBSD$
- */
-/*
- * CAM interface for FreeBSD
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/devicestat.h>
-
-#include <cam/cam.h>
-#include <cam/cam_ccb.h>
-#include <cam/cam_periph.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 <machine/resource.h>
-#include <machine/bus.h>
-
-#include <dev/mly/mlyreg.h>
-#include <dev/mly/mlyio.h>
-#include <dev/mly/mlyvar.h>
-#include <dev/mly/mly_tables.h>
-
-static void mly_cam_poll(struct cam_sim *sim);
-static void mly_cam_action(struct cam_sim *sim, union ccb *ccb);
-static void mly_cam_complete(struct mly_command *mc);
-static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target);
-
-/********************************************************************************
- * CAM-specific queue primitives
- */
-static __inline void
-mly_initq_ccb(struct mly_softc *sc)
-{
- TAILQ_INIT(&sc->mly_cam_ccbq);
- MLYQ_INIT(sc, MLYQ_CCB);
-}
-
-static __inline void
-mly_enqueue_ccb(struct mly_softc *sc, union ccb *ccb)
-{
- int s;
-
- s = splcam();
- TAILQ_INSERT_TAIL(&sc->mly_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
- MLYQ_ADD(sc, MLYQ_CCB);
- splx(s);
-}
-
-static __inline void
-mly_requeue_ccb(struct mly_softc *sc, union ccb *ccb)
-{
- int s;
-
- s = splcam();
- TAILQ_INSERT_HEAD(&sc->mly_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
- MLYQ_ADD(sc, MLYQ_CCB);
- splx(s);
-}
-
-static __inline union ccb *
-mly_dequeue_ccb(struct mly_softc *sc)
-{
- union ccb *ccb;
- int s;
-
- s = splcam();
- if ((ccb = (union ccb *)TAILQ_FIRST(&sc->mly_cam_ccbq)) != NULL) {
- TAILQ_REMOVE(&sc->mly_cam_ccbq, &ccb->ccb_h, sim_links.tqe);
- MLYQ_REMOVE(sc, MLYQ_CCB);
- }
- splx(s);
- return(ccb);
-}
-
-/********************************************************************************
- * space-fill a character string
- */
-static __inline void
-padstr(char *targ, char *src, int len)
-{
- while (len-- > 0) {
- if (*src != 0) {
- *targ++ = *src++;
- } else {
- *targ++ = ' ';
- }
- }
-}
-
-/********************************************************************************
- * Attach the real and virtual SCSI busses to CAM
- */
-int
-mly_cam_attach(struct mly_softc *sc)
-{
- struct cam_devq *devq;
- int chn, i;
-
- debug_called(1);
-
- /* initialise the CCB queue */
- mly_initq_ccb(sc);
-
- /*
- * Allocate a devq for all our channels combined.
- */
- if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) {
- mly_printf(sc, "can't allocate CAM SIM\n");
- return(ENOMEM);
- }
-
- /*
- * Iterate over channels, registering them with CAM.
- *
- * Physical channels are set up to support tagged commands and only a single
- * untagged command. Virtual channels do not support tags, and don't need them.
- */
- for (i = 0, chn = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) {
- /* allocate a sim */
- if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action,
- mly_cam_poll,
- "mly",
- sc,
- device_get_unit(sc->mly_dev),
- 1,
- sc->mly_controllerinfo->maximum_parallel_commands,
- devq)) == NULL) {
- cam_simq_free(devq);
- mly_printf(sc, "CAM SIM attach failed\n");
- return(ENOMEM);
- }
- }
- for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) {
- /* allocate a sim */
- if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action,
- mly_cam_poll,
- "mly",
- sc,
- device_get_unit(sc->mly_dev),
- sc->mly_controllerinfo->maximum_parallel_commands,
- 0,
- devq)) == NULL) {
- cam_simq_free(devq);
- mly_printf(sc, "CAM SIM attach failed\n");
- return(ENOMEM);
- }
- }
-
- for (i = 0; i < chn; i++) {
- /* register the bus IDs so we can get them later */
- if (xpt_bus_register(sc->mly_cam_sim[i], i)) {
- mly_printf(sc, "CAM XPT bus registration failed\n");
- return(ENXIO);
- }
- debug(1, "registered sim %p bus %d", sc->mly_cam_sim[i], i);
- }
-
- return(0);
-}
-
-/********************************************************************************
- * Detach from CAM
- */
-void
-mly_cam_detach(struct mly_softc *sc)
-{
- int chn, nchn, first;
-
- debug_called(1);
-
- nchn = sc->mly_controllerinfo->physical_channels_present +
- sc->mly_controllerinfo->virtual_channels_present;
-
- /*
- * Iterate over channels, deregistering as we go.
- */
- nchn = sc->mly_controllerinfo->physical_channels_present +
- sc->mly_controllerinfo->virtual_channels_present;
- for (chn = 0, first = 1; chn < nchn; chn++) {
-
- /*
- * If a sim was registered for this channel, free it.
- */
- if (sc->mly_cam_sim[chn] != NULL) {
- debug(1, "deregister bus %d", chn);
- xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[chn]));
- debug(1, "free sim for channel %d (%sfree queue)", chn, first ? "" : "don't ");
- cam_sim_free(sc->mly_cam_sim[chn], first ? TRUE : FALSE);
- first = 0;
- }
- }
-}
-
-/********************************************************************************
- * Handle an action requested by CAM
- */
-static void
-mly_cam_action(struct cam_sim *sim, union ccb *ccb)
-{
- struct mly_softc *sc = cam_sim_softc(sim);
-
- debug_called(2);
-
- switch (ccb->ccb_h.func_code) {
-
- /* perform SCSI I/O */
- case XPT_SCSI_IO:
- {
- struct ccb_scsiio *csio = &ccb->csio;
- int bus, target;
-
- bus = cam_sim_bus(sim);
- target = csio->ccb_h.target_id;
-
- debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, ccb->ccb_h.target_lun);
-
- /* check for I/O attempt to a protected device */
- if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) {
- debug(2, " device protected");
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
-
- /* check for I/O attempt to nonexistent device */
- if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) {
- debug(2, " device does not exist");
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
-
- /* XXX increase if/when we support large SCSI commands */
- if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) {
- debug(2, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB);
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
-
- /* check that the CDB pointer is not to a physical address */
- if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
- debug(2, " CDB pointer is to physical address");
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
-
- /* if there is data transfer, it must be to/from a virtual address */
- if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
- if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
- debug(2, " data pointer is to physical address");
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
- if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
- debug(2, " data has premature s/g setup");
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- }
- }
-
- /* abandon aborted ccbs or those that have failed validation */
- if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
- debug(2, "abandoning CCB due to abort/validation failure");
- break;
- }
-
- /* save the channel number in the ccb */
- csio->ccb_h.sim_priv.entries[0].field = bus;
-
- /* enqueue the ccb and start I/O */
- mly_enqueue_ccb(sc, ccb);
- mly_startio(sc);
- return;
- }
-
- /* perform geometry calculations */
- case XPT_CALC_GEOMETRY:
- {
- struct ccb_calc_geometry *ccg = &ccb->ccg;
- u_int32_t secs_per_cylinder;
-
- debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
-
- if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) {
- ccg->heads = 255;
- ccg->secs_per_track = 63;
- } else { /* MLY_BIOSGEOM_2G */
- ccg->heads = 128;
- ccg->secs_per_track = 32;
- }
- secs_per_cylinder = ccg->heads * ccg->secs_per_track;
- ccg->cylinders = ccg->volume_size / secs_per_cylinder;
- ccb->ccb_h.status = CAM_REQ_CMP;
- break;
- }
-
- /* handle path attribute inquiry */
- case XPT_PATH_INQ:
- {
- struct ccb_pathinq *cpi = &ccb->cpi;
-
- debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
-
- cpi->version_num = 1;
- cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */
- cpi->target_sprt = 0;
- cpi->hba_misc = 0;
- cpi->max_target = MLY_MAX_TARGETS - 1;
- cpi->max_lun = MLY_MAX_LUNS - 1;
- cpi->initiator_id = sc->mly_controllerparam->initiator_id;
- strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
- strncpy(cpi->hba_vid, "BSDi", 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 = 132 * 1024; /* XXX what to set this to? */
- ccb->ccb_h.status = CAM_REQ_CMP;
- break;
- }
-
- case XPT_GET_TRAN_SETTINGS:
- {
- struct ccb_trans_settings *cts = &ccb->cts;
- int bus, target;
-
- bus = cam_sim_bus(sim);
- target = cts->ccb_h.target_id;
-
- debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
- cts->valid = 0;
-
- /* logical device? */
- if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
- /* nothing special for these */
-
- /* physical device? */
- } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) {
- /* allow CAM to try tagged transactions */
- cts->flags |= CCB_TRANS_TAG_ENB;
- cts->valid |= CCB_TRANS_TQ_VALID;
-
- /* convert speed (MHz) to usec */
- if (sc->mly_btl[bus][target].mb_speed == 0) {
- cts->sync_period = 1000000 / 5;
- } else {
- cts->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed;
- }
-
- /* convert bus width to CAM internal encoding */
- switch (sc->mly_btl[bus][target].mb_width) {
- case 32:
- cts->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
- break;
- case 16:
- cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
- break;
- case 8:
- default:
- cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- break;
- }
- cts->valid |= CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_BUS_WIDTH_VALID;
-
- /* not a device, bail out */
- } else {
- cts->ccb_h.status = CAM_REQ_CMP_ERR;
- break;
- }
-
- /* disconnect always OK */
- cts->flags |= CCB_TRANS_DISC_ENB;
- cts->valid |= CCB_TRANS_DISC_VALID;
-
- cts->ccb_h.status = CAM_REQ_CMP;
- break;
- }
-
- default: /* we can't do this */
- debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
- ccb->ccb_h.status = CAM_REQ_INVALID;
- break;
- }
-
- xpt_done(ccb);
-}
-
-/********************************************************************************
- * Check for possibly-completed commands.
- */
-static void
-mly_cam_poll(struct cam_sim *sim)
-{
- struct mly_softc *sc = cam_sim_softc(sim);
-
- debug_called(2);
-
- mly_done(sc);
-}
-
-/********************************************************************************
- * Pull a CCB off the work queue and turn it into a command.
- */
-int
-mly_cam_command(struct mly_softc *sc, struct mly_command **mcp)
-{
- struct mly_command *mc;
- struct mly_command_scsi_small *ss;
- struct ccb_scsiio *csio;
- int error;
-
- debug_called(2);
-
- error = 0;
- mc = NULL;
- csio = NULL;
-
- /* check for a CCB */
- if (!(csio = (struct ccb_scsiio *)mly_dequeue_ccb(sc)))
- goto out;
-
- /* get a command to back it */
- if (mly_alloc_command(sc, &mc)) {
- error = ENOMEM;
- goto out;
- }
-
- /* build the command */
- mc->mc_data = csio->data_ptr;
- mc->mc_length = csio->dxfer_len;
- mc->mc_complete = mly_cam_complete;
- mc->mc_private = csio;
-
- /* build the packet for the controller */
- ss = &mc->mc_packet->scsi_small;
- ss->opcode = MDACMD_SCSI;
- if (csio->ccb_h.flags * CAM_DIS_DISCONNECT)
- ss->command_control.disable_disconnect = 1;
- if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
- ss->command_control.data_direction = MLY_CCB_WRITE;
- ss->data_size = csio->dxfer_len;
- ss->addr.phys.lun = csio->ccb_h.target_lun;
- ss->addr.phys.target = csio->ccb_h.target_id;
- ss->addr.phys.channel = csio->ccb_h.sim_priv.entries[0].field;
- if (csio->ccb_h.timeout < (60 * 1000)) {
- ss->timeout.value = csio->ccb_h.timeout / 1000;
- ss->timeout.scale = MLY_TIMEOUT_SECONDS;
- } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) {
- ss->timeout.value = csio->ccb_h.timeout / (60 * 1000);
- ss->timeout.scale = MLY_TIMEOUT_MINUTES;
- } else {
- ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */
- ss->timeout.scale = MLY_TIMEOUT_HOURS;
- }
- ss->maximum_sense_size = csio->sense_len;
- ss->cdb_length = csio->cdb_len;
- if (csio->ccb_h.flags & CAM_CDB_POINTER) {
- bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len);
- } else {
- bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len);
- }
-
-out:
- if (error != 0) {
- if (mc != NULL) {
- mly_release_command(mc);
- mc = NULL;
- }
- if (csio != NULL)
- mly_requeue_ccb(sc, (union ccb *)csio);
- }
- *mcp = mc;
- return(error);
-}
-
-/********************************************************************************
- * Handle completion of a command - pass results back through the CCB
- */
-static void
-mly_cam_complete(struct mly_command *mc)
-{
- struct mly_softc *sc = mc->mc_sc;
- struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private;
- struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr;
- struct mly_btl *btl;
- u_int8_t cmd;
- int bus, target;
-
- debug_called(2);
-
- csio->scsi_status = mc->mc_status;
- switch(mc->mc_status) {
- case SCSI_STATUS_OK:
- /*
- * In order to report logical device type and status, we overwrite
- * the result of the INQUIRY command to logical devices.
- */
- bus = csio->ccb_h.sim_priv.entries[0].field;
- if (bus >= sc->mly_controllerinfo->physical_channels_present) {
- if (csio->ccb_h.flags & CAM_CDB_POINTER) {
- cmd = *csio->cdb_io.cdb_ptr;
- } else {
- cmd = csio->cdb_io.cdb_bytes[0];
- }
- if (cmd == INQUIRY) {
- target = csio->ccb_h.target_id;
- btl = &sc->mly_btl[bus][target];
- padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8);
- padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16);
- padstr(inq->revision, "", 4);
- }
- }
-
- debug(2, "SCSI_STATUS_OK");
- csio->ccb_h.status = CAM_REQ_CMP;
- break;
-
- case SCSI_STATUS_CHECK_COND:
- debug(2, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid);
- csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
- bzero(&csio->sense_data, SSD_FULL_SIZE);
- bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense);
- csio->sense_len = mc->mc_sense;
- csio->ccb_h.status |= CAM_AUTOSNS_VALID;
- csio->resid = mc->mc_resid; /* XXX this is a signed value... */
- break;
-
- case SCSI_STATUS_BUSY:
- debug(2, "SCSI_STATUS_BUSY");
- csio->ccb_h.status = CAM_SCSI_BUSY;
- break;
-
- default:
- debug(2, "unknown status 0x%x", csio->scsi_status);
- csio->ccb_h.status = CAM_REQ_CMP_ERR;
- break;
- }
- xpt_done((union ccb *)csio);
- mly_release_command(mc);
-}
-
-/********************************************************************************
- * Find a peripheral attahed at (bus),(target)
- */
-static struct cam_periph *
-mly_find_periph(struct mly_softc *sc, int bus, int target)
-{
- struct cam_periph *periph;
- struct cam_path *path;
- int status;
-
- status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0);
- if (status == CAM_REQ_CMP) {
- periph = cam_periph_find(path, NULL);
- xpt_free_path(path);
- } else {
- periph = NULL;
- }
- return(periph);
-}
-
-/********************************************************************************
- * Name the device at (bus)(target)
- */
-int
-mly_name_device(struct mly_softc *sc, int bus, int target)
-{
- struct cam_periph *periph;
-
- if ((periph = mly_find_periph(sc, bus, target)) != NULL) {
- sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number);
- return(0);
- }
- sc->mly_btl[bus][target].mb_name[0] = 0;
- return(ENOENT);
-}
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