195 lines
4.7 KiB
C
195 lines
4.7 KiB
C
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/*-
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* Copyright (c) 2020 Emmanuel Vadot <manu@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_debug.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/mmc/mmc_sim.h>
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#include "mmc_sim_if.h"
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static void
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mmc_cam_default_poll(struct cam_sim *sim)
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{
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return;
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}
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static void
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mmc_cam_sim_default_action(struct cam_sim *sim, union ccb *ccb)
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{
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struct mmc_sim *mmc_sim;
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struct ccb_trans_settings_mmc mmc;
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int rv;
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mmc_sim = cam_sim_softc(sim);
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if (mmc_sim == NULL) {
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ccb->ccb_h.status = CAM_SEL_TIMEOUT;
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xpt_done(ccb);
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return;
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}
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mtx_assert(&mmc_sim->mtx, MA_OWNED);
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switch (ccb->ccb_h.func_code) {
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case XPT_PATH_INQ:
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rv = MMC_SIM_GET_TRAN_SETTINGS(mmc_sim->dev, &mmc);
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if (rv != 0) {
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ccb->ccb_h.status = CAM_REQ_INVALID;
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} else {
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mmc_path_inq(&ccb->cpi, "Deglitch Networks",
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sim, mmc.host_max_data);
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}
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break;
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case XPT_GET_TRAN_SETTINGS:
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{
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struct ccb_trans_settings *cts = &ccb->cts;
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rv = MMC_SIM_GET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc);
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if (rv != 0)
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ccb->ccb_h.status = CAM_REQ_INVALID;
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else {
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cts->protocol = PROTO_MMCSD;
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cts->protocol_version = 1;
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cts->transport = XPORT_MMCSD;
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cts->transport_version = 1;
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cts->xport_specific.valid = 0;
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ccb->ccb_h.status = CAM_REQ_CMP;
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}
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break;
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}
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case XPT_SET_TRAN_SETTINGS:
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{
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struct ccb_trans_settings *cts = &ccb->cts;
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rv = MMC_SIM_SET_TRAN_SETTINGS(mmc_sim->dev, &cts->proto_specific.mmc);
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if (rv != 0)
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ccb->ccb_h.status = CAM_REQ_INVALID;
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else
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ccb->ccb_h.status = CAM_REQ_CMP;
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break;
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}
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case XPT_RESET_BUS:
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ccb->ccb_h.status = CAM_REQ_CMP;
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break;
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case XPT_MMC_IO:
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{
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rv = MMC_SIM_CAM_REQUEST(mmc_sim->dev, ccb);
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if (rv != 0)
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ccb->ccb_h.status = CAM_REQ_INPROG;
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else
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ccb->ccb_h.status = CAM_REQ_INVALID;
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return;
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/* NOTREACHED */
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break;
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}
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default:
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ccb->ccb_h.status = CAM_REQ_INVALID;
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break;
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}
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xpt_done(ccb);
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return;
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}
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int
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mmc_cam_sim_alloc(device_t dev, const char *name, struct mmc_sim *mmc_sim)
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{
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char sim_name[64], mtx_name[64];
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mmc_sim->dev = dev;
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if ((mmc_sim->devq = cam_simq_alloc(1)) == NULL) {
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goto fail;
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}
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snprintf(sim_name, sizeof(sim_name), "%s_sim", name);
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snprintf(mtx_name, sizeof(mtx_name), "%s_mtx", name);
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mtx_init(&mmc_sim->mtx, sim_name, NULL, MTX_DEF);
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mmc_sim->sim = cam_sim_alloc_dev(mmc_cam_sim_default_action,
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mmc_cam_default_poll,
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name, mmc_sim, dev,
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&mmc_sim->mtx, 1, 1, mmc_sim->devq);
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if (mmc_sim->sim == NULL) {
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cam_simq_free(mmc_sim->devq);
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device_printf(dev, "cannot allocate CAM SIM\n");
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goto fail;
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}
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mtx_lock(&mmc_sim->mtx);
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if (xpt_bus_register(mmc_sim->sim, dev, 0) != 0) {
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device_printf(dev, "cannot register SCSI pass-through bus\n");
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cam_sim_free(mmc_sim->sim, FALSE);
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cam_simq_free(mmc_sim->devq);
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mtx_unlock(&mmc_sim->mtx);
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goto fail;
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}
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mtx_unlock(&mmc_sim->mtx);
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return (0);
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fail:
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mmc_cam_sim_free(mmc_sim);
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return (1);
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}
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void
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mmc_cam_sim_free(struct mmc_sim *mmc_sim)
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{
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if (mmc_sim->sim != NULL) {
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mtx_lock(&mmc_sim->mtx);
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xpt_bus_deregister(cam_sim_path(mmc_sim->sim));
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cam_sim_free(mmc_sim->sim, FALSE);
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mtx_unlock(&mmc_sim->mtx);
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}
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if (mmc_sim->devq != NULL)
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cam_simq_free(mmc_sim->devq);
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}
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void
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mmc_cam_sim_discover(struct mmc_sim *mmc_sim)
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{
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mmccam_start_discovery(mmc_sim->sim);
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}
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