/*- * Copyright (c) 2020-2021 Emmanuel Vadot * * 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 ``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 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 #include #include #include #include #include #include #include #include #include #include #include "mmc_sim_if.h" static void mmc_cam_default_poll(struct cam_sim *sim) { struct mmc_sim *mmc_sim; mmc_sim = cam_sim_softc(sim); MMC_SIM_CAM_POLL(mmc_sim->dev); } static void mmc_sim_task(void *arg, int pending) { struct mmc_sim *mmc_sim; struct ccb_trans_settings *cts; int rv; mmc_sim = arg; if (mmc_sim->ccb == NULL) return; cts = &mmc_sim->ccb->cts; switch (mmc_sim->ccb->ccb_h.func_code) { case XPT_MMC_GET_TRAN_SETTINGS: rv = MMC_SIM_GET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc); if (rv != 0) mmc_sim->ccb->ccb_h.status = CAM_REQ_INVALID; else mmc_sim->ccb->ccb_h.status = CAM_REQ_CMP; break; case XPT_MMC_SET_TRAN_SETTINGS: rv = MMC_SIM_SET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc); if (rv != 0) mmc_sim->ccb->ccb_h.status = CAM_REQ_INVALID; else mmc_sim->ccb->ccb_h.status = CAM_REQ_CMP; break; default: panic("Unsupported ccb func %x\n", mmc_sim->ccb->ccb_h.func_code); break; } xpt_done(mmc_sim->ccb); mmc_sim->ccb = NULL; } static void mmc_cam_sim_default_action(struct cam_sim *sim, union ccb *ccb) { struct mmc_sim *mmc_sim; struct ccb_trans_settings_mmc mmc; int rv; mmc_sim = cam_sim_softc(sim); mtx_assert(&mmc_sim->mtx, MA_OWNED); if (mmc_sim->ccb != NULL) { ccb->ccb_h.status = CAM_BUSY; xpt_done(ccb); return; } switch (ccb->ccb_h.func_code) { case XPT_PATH_INQ: rv = MMC_SIM_GET_TRAN_SETTINGS(mmc_sim->dev, &mmc); if (rv != 0) { ccb->ccb_h.status = CAM_REQ_INVALID; } else { mmc_path_inq(&ccb->cpi, "Deglitch Networks", sim, mmc.host_max_data); } break; case XPT_GET_TRAN_SETTINGS: { struct ccb_trans_settings *cts = &ccb->cts; rv = MMC_SIM_GET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc); if (rv != 0) ccb->ccb_h.status = CAM_REQ_INVALID; else { cts->protocol = PROTO_MMCSD; cts->protocol_version = 1; cts->transport = XPORT_MMCSD; cts->transport_version = 1; cts->xport_specific.valid = 0; ccb->ccb_h.status = CAM_REQ_CMP; } break; } case XPT_MMC_GET_TRAN_SETTINGS: { ccb->ccb_h.status = CAM_SIM_QUEUED; mmc_sim->ccb = ccb; taskqueue_enqueue(taskqueue_thread, &mmc_sim->sim_task); return; /* NOTREACHED */ break; } case XPT_SET_TRAN_SETTINGS: { struct ccb_trans_settings *cts = &ccb->cts; rv = MMC_SIM_SET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc); if (rv != 0) ccb->ccb_h.status = CAM_REQ_INVALID; else ccb->ccb_h.status = CAM_REQ_CMP; break; } case XPT_MMC_SET_TRAN_SETTINGS: { ccb->ccb_h.status = CAM_SIM_QUEUED; mmc_sim->ccb = ccb; taskqueue_enqueue(taskqueue_thread, &mmc_sim->sim_task); return; /* NOTREACHED */ break; } case XPT_RESET_BUS: ccb->ccb_h.status = CAM_REQ_CMP; break; case XPT_MMC_IO: { rv = MMC_SIM_CAM_REQUEST(mmc_sim->dev, ccb); if (rv != 0) ccb->ccb_h.status = CAM_SIM_QUEUED; return; /* NOTREACHED */ break; } default: ccb->ccb_h.status = CAM_REQ_INVALID; break; } xpt_done(ccb); return; } int mmc_cam_sim_alloc(device_t dev, const char *name, struct mmc_sim *mmc_sim) { kobjop_desc_t kobj_desc; kobj_method_t *kobj_method; mmc_sim->dev = dev; if ((mmc_sim->devq = cam_simq_alloc(1)) == NULL) { goto fail; } snprintf(mmc_sim->name, sizeof(mmc_sim->name), "%s_sim", name); mtx_init(&mmc_sim->mtx, mmc_sim->name, NULL, MTX_DEF); /* Provide sim_poll hook only if the device has the poll method. */ kobj_desc = &mmc_sim_cam_poll_desc; kobj_method = kobj_lookup_method(((kobj_t)dev)->ops->cls, NULL, kobj_desc); mmc_sim->sim = cam_sim_alloc(mmc_cam_sim_default_action, kobj_method == &kobj_desc->deflt ? NULL : mmc_cam_default_poll, mmc_sim->name, mmc_sim, device_get_unit(dev), &mmc_sim->mtx, 1, 1, mmc_sim->devq); if (mmc_sim->sim == NULL) { cam_simq_free(mmc_sim->devq); device_printf(dev, "cannot allocate CAM SIM\n"); goto fail; } mtx_lock(&mmc_sim->mtx); if (xpt_bus_register(mmc_sim->sim, dev, 0) != 0) { device_printf(dev, "cannot register SCSI pass-through bus\n"); cam_sim_free(mmc_sim->sim, FALSE); cam_simq_free(mmc_sim->devq); mtx_unlock(&mmc_sim->mtx); goto fail; } mtx_unlock(&mmc_sim->mtx); TASK_INIT(&mmc_sim->sim_task, 0, mmc_sim_task, mmc_sim); return (0); fail: mmc_cam_sim_free(mmc_sim); return (1); } void mmc_cam_sim_free(struct mmc_sim *mmc_sim) { if (mmc_sim->sim != NULL) { mtx_lock(&mmc_sim->mtx); xpt_bus_deregister(cam_sim_path(mmc_sim->sim)); cam_sim_free(mmc_sim->sim, FALSE); mtx_unlock(&mmc_sim->mtx); } if (mmc_sim->devq != NULL) cam_simq_free(mmc_sim->devq); } void mmc_cam_sim_discover(struct mmc_sim *mmc_sim) { mmccam_start_discovery(mmc_sim->sim); }