/* $NetBSD: ninjascsi32.c,v 1.6 2006/01/14 07:14:45 itohy Exp $ */ /*- * Copyright (c) 2004, 2006 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by ITOH Yasufumi. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 __KERNEL_RCSID(0, "$NetBSD: ninjascsi32.c,v 1.6 2006/01/14 07:14:45 itohy Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * DualEdge transfer support */ /* #define NJSC32_DUALEDGE */ /* XXX untested */ /* * Auto param loading does not work properly (it partially works (works on * start, doesn't on restart) on rev 0x54, it doesn't work at all on rev 0x51), * and it doesn't improve the performance so much, * forget about it. */ #undef NJSC32_AUTOPARAM #include #include /* #define NJSC32_DEBUG */ /* #define NJSC32_TRACE */ #ifdef NJSC32_DEBUG #define DPRINTF(x) printf x #define DPRINTC(cmd, x) PRINTC(cmd, x) #else #define DPRINTF(x) #define DPRINTC(cmd, x) #endif #ifdef NJSC32_TRACE #define TPRINTF(x) printf x #define TPRINTC(cmd, x) PRINTC(cmd, x) #else #define TPRINTF(x) #define TPRINTC(cmd, x) #endif #define PRINTC(cmd, x) do { \ scsi_print_addr((cmd)->c_xs->xs_periph); \ printf x; \ } while (/* CONSTCOND */ 0) static void njsc32_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, void *); static void njsc32_scsipi_minphys(struct buf *); static int njsc32_scsipi_ioctl(struct scsipi_channel *, u_long, caddr_t, int, struct proc *); static void njsc32_init(struct njsc32_softc *, int nosleep); static int njsc32_init_cmds(struct njsc32_softc *); static void njsc32_target_async(struct njsc32_softc *, struct njsc32_target *); static void njsc32_init_targets(struct njsc32_softc *); static void njsc32_add_msgout(struct njsc32_softc *, int); static u_int32_t njsc32_get_auto_msgout(struct njsc32_softc *); #ifdef NJSC32_DUALEDGE static void njsc32_msgout_wdtr(struct njsc32_softc *, int); #endif static void njsc32_msgout_sdtr(struct njsc32_softc *, int period, int offset); static void njsc32_negotiate_xfer(struct njsc32_softc *, struct njsc32_target *); static void njsc32_arbitration_failed(struct njsc32_softc *); static void njsc32_start(struct njsc32_softc *); static void njsc32_run_xfer(struct njsc32_softc *, struct scsipi_xfer *); static void njsc32_end_cmd(struct njsc32_softc *, struct njsc32_cmd *, scsipi_xfer_result_t); static void njsc32_reset_bus(struct njsc32_softc *); static void njsc32_clear_cmds(struct njsc32_softc *, scsipi_xfer_result_t); static void njsc32_reset_detected(struct njsc32_softc *); static void njsc32_set_ptr(struct njsc32_softc *, struct njsc32_cmd *, u_int32_t); static void njsc32_assert_ack(struct njsc32_softc *); static void njsc32_negate_ack(struct njsc32_softc *); static void njsc32_wait_req_negate(struct njsc32_softc *); static void njsc32_reconnect(struct njsc32_softc *, struct njsc32_cmd *); enum njsc32_reselstat { NJSC32_RESEL_ERROR, /* to be rejected */ NJSC32_RESEL_COMPLETE, /* reselection is just complete */ NJSC32_RESEL_THROUGH /* this message is OK (no reply) */ }; static enum njsc32_reselstat njsc32_resel_identify(struct njsc32_softc *, int lun, struct njsc32_cmd **); static enum njsc32_reselstat njsc32_resel_tag(struct njsc32_softc *, int tag, struct njsc32_cmd **); static void njsc32_cmd_reload(struct njsc32_softc *, struct njsc32_cmd *, int); static void njsc32_update_xfer_mode(struct njsc32_softc *, struct njsc32_target *); static void njsc32_msgin(struct njsc32_softc *); static void njsc32_msgout(struct njsc32_softc *); static void njsc32_cmdtimeout(void *); static void njsc32_reseltimeout(void *); static inline unsigned njsc32_read_1(struct njsc32_softc *sc, int no) { return bus_space_read_1(sc->sc_regt, sc->sc_regh, no); } static inline unsigned njsc32_read_2(struct njsc32_softc *sc, int no) { return bus_space_read_2(sc->sc_regt, sc->sc_regh, no); } static inline u_int32_t njsc32_read_4(struct njsc32_softc *sc, int no) { return bus_space_read_4(sc->sc_regt, sc->sc_regh, no); } static inline void njsc32_write_1(struct njsc32_softc *sc, int no, int val) { bus_space_write_1(sc->sc_regt, sc->sc_regh, no, val); } static inline void njsc32_write_2(struct njsc32_softc *sc, int no, int val) { bus_space_write_2(sc->sc_regt, sc->sc_regh, no, val); } static inline void njsc32_write_4(struct njsc32_softc *sc, int no, u_int32_t val) { bus_space_write_4(sc->sc_regt, sc->sc_regh, no, val); } static inline unsigned njsc32_ireg_read_1(struct njsc32_softc *sc, int no) { bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); return bus_space_read_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW); } static inline unsigned njsc32_ireg_read_2(struct njsc32_softc *sc, int no) { bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); return bus_space_read_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW); } static inline u_int32_t njsc32_ireg_read_4(struct njsc32_softc *sc, int no) { u_int32_t val; bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); val = (u_int16_t)bus_space_read_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW); return val | (bus_space_read_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_HIGH) << 16); } static inline void njsc32_ireg_write_1(struct njsc32_softc *sc, int no, int val) { bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW, val); } static inline void njsc32_ireg_write_2(struct njsc32_softc *sc, int no, int val) { bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); bus_space_write_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW, val); } static inline void njsc32_ireg_write_4(struct njsc32_softc *sc, int no, u_int32_t val) { bus_space_write_1(sc->sc_regt, sc->sc_regh, NJSC32_REG_INDEX, no); bus_space_write_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_LOW, val); bus_space_write_2(sc->sc_regt, sc->sc_regh, NJSC32_REG_DATA_HIGH, val >> 16); } #define NS(ns) ((ns) / 4) /* nanosecond (>= 50) -> sync value */ #ifdef __STDC__ # define ACKW(n) NJSC32_ACK_WIDTH_ ## n ## CLK # define SMPL(n) (NJSC32_SREQ_SAMPLING_ ## n ## CLK | \ NJSC32_SREQ_SAMPLING_ENABLE) #else # define ACKW(n) NJSC32_ACK_WIDTH_/**/n/**/CLK # define SMPL(n) (NJSC32_SREQ_SAMPLING_/**/n/**/CLK | \ NJSC32_SREQ_SAMPLING_ENABLE) #endif #define NJSC32_NSYNCT_MAXSYNC 1 #define NJSC32_NSYNCT 16 /* 40MHz (25ns) */ static const struct njsc32_sync_param njsc32_synct_40M[NJSC32_NSYNCT] = { { 0, 0, 0 }, /* dummy for async */ { NS( 50), ACKW(1), 0 }, /* 20.0 : 50ns, 25ns */ { NS( 75), ACKW(1), SMPL(1) }, /* 13.3 : 75ns, 25ns */ { NS(100), ACKW(2), SMPL(1) }, /* 10.0 : 100ns, 50ns */ { NS(125), ACKW(2), SMPL(2) }, /* 8.0 : 125ns, 50ns */ { NS(150), ACKW(3), SMPL(2) }, /* 6.7 : 150ns, 75ns */ { NS(175), ACKW(3), SMPL(2) }, /* 5.7 : 175ns, 75ns */ { NS(200), ACKW(4), SMPL(2) }, /* 5.0 : 200ns, 100ns */ { NS(225), ACKW(4), SMPL(4) }, /* 4.4 : 225ns, 100ns */ { NS(250), ACKW(4), SMPL(4) }, /* 4.0 : 250ns, 100ns */ { NS(275), ACKW(4), SMPL(4) }, /* 3.64: 275ns, 100ns */ { NS(300), ACKW(4), SMPL(4) }, /* 3.33: 300ns, 100ns */ { NS(325), ACKW(4), SMPL(4) }, /* 3.01: 325ns, 100ns */ { NS(350), ACKW(4), SMPL(4) }, /* 2.86: 350ns, 100ns */ { NS(375), ACKW(4), SMPL(4) }, /* 2.67: 375ns, 100ns */ { NS(400), ACKW(4), SMPL(4) } /* 2.50: 400ns, 100ns */ }; #ifdef NJSC32_SUPPORT_OTHER_CLOCKS /* 20MHz (50ns) */ static const struct njsc32_sync_param njsc32_synct_20M[NJSC32_NSYNCT] = { { 0, 0, 0 }, /* dummy for async */ { NS(100), ACKW(1), 0 }, /* 10.0 : 100ns, 50ns */ { NS(150), ACKW(1), SMPL(2) }, /* 6.7 : 150ns, 50ns */ { NS(200), ACKW(2), SMPL(2) }, /* 5.0 : 200ns, 100ns */ { NS(250), ACKW(2), SMPL(4) }, /* 4.0 : 250ns, 100ns */ { NS(300), ACKW(3), SMPL(4) }, /* 3.3 : 300ns, 150ns */ { NS(350), ACKW(3), SMPL(4) }, /* 2.8 : 350ns, 150ns */ { NS(400), ACKW(4), SMPL(4) }, /* 2.5 : 400ns, 200ns */ { NS(450), ACKW(4), SMPL(4) }, /* 2.2 : 450ns, 200ns */ { NS(500), ACKW(4), SMPL(4) }, /* 2.0 : 500ns, 200ns */ { NS(550), ACKW(4), SMPL(4) }, /* 1.82: 550ns, 200ns */ { NS(600), ACKW(4), SMPL(4) }, /* 1.67: 600ns, 200ns */ { NS(650), ACKW(4), SMPL(4) }, /* 1.54: 650ns, 200ns */ { NS(700), ACKW(4), SMPL(4) }, /* 1.43: 700ns, 200ns */ { NS(750), ACKW(4), SMPL(4) }, /* 1.33: 750ns, 200ns */ { NS(800), ACKW(4), SMPL(4) } /* 1.25: 800ns, 200ns */ }; /* 33.3MHz (30ns) */ static const struct njsc32_sync_param njsc32_synct_pci[NJSC32_NSYNCT] = { { 0, 0, 0 }, /* dummy for async */ { NS( 60), ACKW(1), 0 }, /* 16.6 : 60ns, 30ns */ { NS( 90), ACKW(1), SMPL(1) }, /* 11.1 : 90ns, 30ns */ { NS(120), ACKW(2), SMPL(2) }, /* 8.3 : 120ns, 60ns */ { NS(150), ACKW(2), SMPL(2) }, /* 6.7 : 150ns, 60ns */ { NS(180), ACKW(3), SMPL(2) }, /* 5.6 : 180ns, 90ns */ { NS(210), ACKW(3), SMPL(4) }, /* 4.8 : 210ns, 90ns */ { NS(240), ACKW(4), SMPL(4) }, /* 4.2 : 240ns, 120ns */ { NS(270), ACKW(4), SMPL(4) }, /* 3.7 : 270ns, 120ns */ { NS(300), ACKW(4), SMPL(4) }, /* 3.3 : 300ns, 120ns */ { NS(330), ACKW(4), SMPL(4) }, /* 3.0 : 330ns, 120ns */ { NS(360), ACKW(4), SMPL(4) }, /* 2.8 : 360ns, 120ns */ { NS(390), ACKW(4), SMPL(4) }, /* 2.6 : 390ns, 120ns */ { NS(420), ACKW(4), SMPL(4) }, /* 2.4 : 420ns, 120ns */ { NS(450), ACKW(4), SMPL(4) }, /* 2.2 : 450ns, 120ns */ { NS(480), ACKW(4), SMPL(4) } /* 2.1 : 480ns, 120ns */ }; #endif /* NJSC32_SUPPORT_OTHER_CLOCKS */ #undef NS #undef ACKW #undef SMPL /* initialize device */ static void njsc32_init(struct njsc32_softc *sc, int nosleep) { u_int16_t intstat; /* block all interrupts */ njsc32_write_2(sc, NJSC32_REG_IRQ, NJSC32_IRQ_MASK_ALL); /* clear transfer */ njsc32_write_2(sc, NJSC32_REG_TRANSFER, 0); njsc32_write_4(sc, NJSC32_REG_BM_CNT, 0); /* make sure interrupts are cleared */ /* XXX loop forever? */ while ((intstat = njsc32_read_2(sc, NJSC32_REG_IRQ)) & NJSC32_IRQ_INTR_PENDING) { DPRINTF(("%s: njsc32_init: intr pending: %#x\n", sc->sc_dev.dv_xname, intstat)); } /* FIFO threshold */ njsc32_ireg_write_1(sc, NJSC32_IREG_FIFO_THRESHOLD_FULL, NJSC32_FIFO_FULL_BUSMASTER); njsc32_ireg_write_1(sc, NJSC32_IREG_FIFO_THRESHOLD_EMPTY, NJSC32_FIFO_EMPTY_BUSMASTER); /* clock source */ njsc32_ireg_write_1(sc, NJSC32_IREG_CLOCK, sc->sc_clk); /* memory read multiple */ njsc32_ireg_write_1(sc, NJSC32_IREG_BM, NJSC32_BM_MEMRD_CMD1 | NJSC32_BM_SGT_AUTO_PARA_MEMRD_CMD); /* clear parity error and enable parity detection */ njsc32_write_1(sc, NJSC32_REG_PARITY_CONTROL, NJSC32_PARITYCTL_CHECK_ENABLE | NJSC32_PARITYCTL_CLEAR_ERROR); /* misc configuration */ njsc32_ireg_write_2(sc, NJSC32_IREG_MISC, NJSC32_MISC_SCSI_DIRECTION_DETECTOR_SELECT | NJSC32_MISC_DELAYED_BMSTART | NJSC32_MISC_MASTER_TERMINATION_SELECT | NJSC32_MISC_BMREQ_NEGATE_TIMING_SEL | NJSC32_MISC_AUTOSEL_TIMING_SEL | NJSC32_MISC_BMSTOP_CHANGE2_NONDATA_PHASE); /* * Check for termination power (32Bi only?). */ if (!nosleep || cold) { DPRINTF(("%s: njsc32_init: checking TERMPWR\n", sc->sc_dev.dv_xname)); /* First, turn termination power off */ njsc32_ireg_write_1(sc, NJSC32_IREG_TERM_PWR, 0); /* give 0.5s to settle */ if (nosleep) delay(500000); else tsleep(sc, PWAIT, "njs_t1", hz / 2); } /* supply termination power if not supplied by other devices */ if ((njsc32_ireg_read_1(sc, NJSC32_IREG_TERM_PWR) & NJSC32_TERMPWR_SENSE) == 0) { /* termination power is not present on the bus */ if (sc->sc_flags & NJSC32_CANNOT_SUPPLY_TERMPWR) { /* * CardBus device must not supply termination power * to avoid excessive power consumption. */ printf("%s: no termination power present\n", sc->sc_dev.dv_xname); } else { /* supply termination power */ njsc32_ireg_write_1(sc, NJSC32_IREG_TERM_PWR, NJSC32_TERMPWR_BPWR); DPRINTF(("%s: supplying termination power\n", sc->sc_dev.dv_xname)); /* give 0.5s to settle */ if (!nosleep) tsleep(sc, PWAIT, "njs_t2", hz / 2); } } /* stop timer */ njsc32_write_2(sc, NJSC32_REG_TIMER, NJSC32_TIMER_STOP); njsc32_write_2(sc, NJSC32_REG_TIMER, NJSC32_TIMER_STOP); /* default transfer parameter */ njsc32_write_1(sc, NJSC32_REG_SYNC, 0); njsc32_write_1(sc, NJSC32_REG_ACK_WIDTH, NJSC32_ACK_WIDTH_1CLK); njsc32_write_2(sc, NJSC32_REG_SEL_TIMEOUT, NJSC32_SEL_TIMEOUT_TIME); /* select interrupt source */ njsc32_ireg_write_2(sc, NJSC32_IREG_IRQ_SELECT, NJSC32_IRQSEL_RESELECT | NJSC32_IRQSEL_PHASE_CHANGE | NJSC32_IRQSEL_SCSIRESET | NJSC32_IRQSEL_TIMER | NJSC32_IRQSEL_FIFO_THRESHOLD | NJSC32_IRQSEL_TARGET_ABORT | NJSC32_IRQSEL_MASTER_ABORT | /* XXX not yet NJSC32_IRQSEL_SERR | NJSC32_IRQSEL_PERR | NJSC32_IRQSEL_BMCNTERR | */ NJSC32_IRQSEL_AUTO_SCSI_SEQ); /* unblock interrupts */ njsc32_write_2(sc, NJSC32_REG_IRQ, 0); /* turn LED off */ njsc32_ireg_write_1(sc, NJSC32_IREG_EXT_PORT_DDR, NJSC32_EXTPORT_LED_OFF); njsc32_ireg_write_1(sc, NJSC32_IREG_EXT_PORT, NJSC32_EXTPORT_LED_OFF); /* reset SCSI bus so the targets become known state */ njsc32_reset_bus(sc); } static int njsc32_init_cmds(struct njsc32_softc *sc) { struct njsc32_cmd *cmd; bus_addr_t dmaaddr; int i, error; /* * allocate DMA area for command */ if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct njsc32_dma_page), PAGE_SIZE, 0, &sc->sc_cmdpg_seg, 1, &sc->sc_cmdpg_nsegs, BUS_DMA_NOWAIT)) != 0) { printf("%s: unable to allocate cmd page, error = %d\n", sc->sc_dev.dv_xname, error); return 0; } if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_cmdpg_seg, sc->sc_cmdpg_nsegs, sizeof(struct njsc32_dma_page), (caddr_t *)&sc->sc_cmdpg, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { printf("%s: unable to map cmd page, error = %d\n", sc->sc_dev.dv_xname, error); goto fail1; } if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct njsc32_dma_page), 1, sizeof(struct njsc32_dma_page), 0, BUS_DMA_NOWAIT, &sc->sc_dmamap_cmdpg)) != 0) { printf("%s: unable to create cmd DMA map, error = %d\n", sc->sc_dev.dv_xname, error); goto fail2; } if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_cmdpg, sc->sc_cmdpg, sizeof(struct njsc32_dma_page), NULL, BUS_DMA_NOWAIT)) != 0) { printf("%s: unable to load cmd DMA map, error = %d\n", sc->sc_dev.dv_xname, error); goto fail3; } memset(sc->sc_cmdpg, 0, sizeof(struct njsc32_dma_page)); dmaaddr = sc->sc_dmamap_cmdpg->dm_segs[0].ds_addr; #ifdef NJSC32_AUTOPARAM sc->sc_ap_dma = dmaaddr + offsetof(struct njsc32_dma_page, dp_ap); #endif for (i = 0; i < NJSC32_NUM_CMD; i++) { cmd = &sc->sc_cmds[i]; cmd->c_sc = sc; cmd->c_sgt = sc->sc_cmdpg->dp_sg[i]; cmd->c_sgt_dma = dmaaddr + offsetof(struct njsc32_dma_page, dp_sg[i]); cmd->c_flags = 0; error = bus_dmamap_create(sc->sc_dmat, NJSC32_MAX_XFER, /* max total map size */ NJSC32_NUM_SG, /* max number of segments */ NJSC32_SGT_MAXSEGLEN, /* max size of a segment */ 0, /* boundary */ BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &cmd->c_dmamap_xfer); if (error) { printf("%s: only %d cmd descs available (error = %d)\n", sc->sc_dev.dv_xname, i, error); break; } TAILQ_INSERT_TAIL(&sc->sc_freecmd, cmd, c_q); } if (i > 0) return i; bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_cmdpg); fail3: bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_cmdpg); fail2: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_cmdpg, sizeof(struct njsc32_dma_page)); fail1: bus_dmamem_free(sc->sc_dmat, &sc->sc_cmdpg_seg, sc->sc_cmdpg_nsegs); return 0; } static void njsc32_target_async(struct njsc32_softc *sc, struct njsc32_target *target) { target->t_sync = NJSC32_SYNC_VAL(sc->sc_sync_max, NJSC32_SYNCOFFSET_ASYNC); target->t_ackwidth = NJSC32_ACK_WIDTH_1CLK; target->t_sample = 0; /* disable */ target->t_syncoffset = NJSC32_SYNCOFFSET_ASYNC; target->t_syncperiod = NJSC32_SYNCPERIOD_ASYNC; } static void njsc32_init_targets(struct njsc32_softc *sc) { int id, lun; struct njsc32_lu *lu; for (id = 0; id <= NJSC32_MAX_TARGET_ID; id++) { /* cancel negotiation status */ sc->sc_targets[id].t_state = NJSC32_TARST_INIT; /* default to async mode */ njsc32_target_async(sc, &sc->sc_targets[id]); #ifdef NJSC32_DUALEDGE sc->sc_targets[id].t_xferctl = 0; #endif sc->sc_targets[id].t_targetid = (1 << id) | (1 << NJSC32_INITIATOR_ID); /* init logical units */ for (lun = 0; lun < NJSC32_NLU; lun++) { lu = &sc->sc_targets[id].t_lus[lun]; lu->lu_cmd = NULL; TAILQ_INIT(&lu->lu_q); } } } void njsc32_attach(struct njsc32_softc *sc) { const char *str; #if 1 /* test */ int reg; njsc32_model_t detected_model; #endif /* init */ TAILQ_INIT(&sc->sc_freecmd); TAILQ_INIT(&sc->sc_reqcmd); #if 1 /* test */ /* * try to distinguish 32Bi and 32UDE */ /* try to set DualEdge bit (exists on 32UDE only) and read it back */ njsc32_write_2(sc, NJSC32_REG_TRANSFER, NJSC32_XFR_DUALEDGE_ENABLE); if ((reg = njsc32_read_2(sc, NJSC32_REG_TRANSFER)) == 0xffff) { /* device was removed? */ aprint_error("%s: attach failed\n", sc->sc_dev.dv_xname); return; } else if (reg & NJSC32_XFR_DUALEDGE_ENABLE) { detected_model = NJSC32_MODEL_32UDE | NJSC32_FLAG_DUALEDGE; } else { detected_model = NJSC32_MODEL_32BI; } njsc32_write_2(sc, NJSC32_REG_TRANSFER, 0); /* restore */ #if 1/*def DIAGNOSTIC*/ /* compare what is configured with what is detected */ if ((sc->sc_model & NJSC32_MODEL_MASK) != (detected_model & NJSC32_MODEL_MASK)) { /* * Please report this error if it happens. */ aprint_error("%s: model mismatch: %#x vs %#x\n", sc->sc_dev.dv_xname, sc->sc_model, detected_model); return; } #endif #endif /* check model */ switch (sc->sc_model & NJSC32_MODEL_MASK) { case NJSC32_MODEL_32BI: str = "Bi"; /* 32Bi doesn't support DualEdge transfer */ KASSERT((sc->sc_model & NJSC32_FLAG_DUALEDGE) == 0); break; case NJSC32_MODEL_32UDE: str = "UDE"; break; default: aprint_error("%s: unknown model!\n", sc->sc_dev.dv_xname); return; } aprint_normal("%s: NJSC-32%s", sc->sc_dev.dv_xname, str); switch (sc->sc_clk) { default: #ifdef DIAGNOSTIC panic("njsc32_attach: unknown clk %d", sc->sc_clk); #endif case NJSC32_CLOCK_DIV_4: sc->sc_synct = njsc32_synct_40M; str = "40MHz"; break; #ifdef NJSC32_SUPPORT_OTHER_CLOCKS case NJSC32_CLOCK_DIV_2: sc->sc_synct = njsc32_synct_20M; str = "20MHz"; break; case NJSC32_CLOCK_PCICLK: sc->sc_synct = njsc32_synct_pci; str = "PCI"; break; #endif } aprint_normal(", G/A rev %#x, clk %s%s\n", NJSC32_INDEX_GAREV(njsc32_read_2(sc, NJSC32_REG_INDEX)), str, (sc->sc_model & NJSC32_FLAG_DUALEDGE) ? #ifdef NJSC32_DUALEDGE ", DualEdge" #else ", DualEdge (no driver support)" #endif : ""); /* allocate DMA resource */ if ((sc->sc_ncmd = njsc32_init_cmds(sc)) == 0) { printf("%s: no usable DMA map\n", sc->sc_dev.dv_xname); return; } sc->sc_flags |= NJSC32_CMDPG_MAPPED; sc->sc_curcmd = NULL; sc->sc_nusedcmds = 0; sc->sc_stat = NJSC32_STAT_IDLE; sc->sc_sync_max = 1; /* XXX look up EEPROM configuration? */ /* initialize target structure */ njsc32_init_targets(sc); /* initialize hardware */ njsc32_init(sc, cold); /* setup adapter */ sc->sc_adapter.adapt_dev = &sc->sc_dev; sc->sc_adapter.adapt_nchannels = 1; sc->sc_adapter.adapt_request = njsc32_scsipi_request; sc->sc_adapter.adapt_minphys = njsc32_scsipi_minphys; sc->sc_adapter.adapt_ioctl = njsc32_scsipi_ioctl; sc->sc_adapter.adapt_max_periph = sc->sc_adapter.adapt_openings = sc->sc_ncmd; /* setup channel */ sc->sc_channel.chan_adapter = &sc->sc_adapter; sc->sc_channel.chan_bustype = &scsi_bustype; sc->sc_channel.chan_channel = 0; sc->sc_channel.chan_ntargets = NJSC32_NTARGET; sc->sc_channel.chan_nluns = NJSC32_NLU; sc->sc_channel.chan_id = NJSC32_INITIATOR_ID; sc->sc_scsi = config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); } int njsc32_detach(struct njsc32_softc *sc, int flags) { int rv = 0; int i, s; struct njsc32_cmd *cmd; s = splbio(); /* clear running/disconnected commands */ njsc32_clear_cmds(sc, XS_DRIVER_STUFFUP); sc->sc_stat = NJSC32_STAT_DETACH; /* clear pending commands */ while ((cmd = TAILQ_FIRST(&sc->sc_reqcmd)) != NULL) { TAILQ_REMOVE(&sc->sc_reqcmd, cmd, c_q); njsc32_end_cmd(sc, cmd, XS_RESET); } if (sc->sc_scsi != NULL) rv = config_detach(sc->sc_scsi, flags); splx(s); /* free DMA resource */ if (sc->sc_flags & NJSC32_CMDPG_MAPPED) { for (i = 0; i < sc->sc_ncmd; i++) { cmd = &sc->sc_cmds[i]; if (cmd->c_flags & NJSC32_CMD_DMA_MAPPED) bus_dmamap_unload(sc->sc_dmat, cmd->c_dmamap_xfer); bus_dmamap_destroy(sc->sc_dmat, cmd->c_dmamap_xfer); } bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_cmdpg); bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_cmdpg); bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_cmdpg, sizeof(struct njsc32_dma_page)); bus_dmamem_free(sc->sc_dmat, &sc->sc_cmdpg_seg, sc->sc_cmdpg_nsegs); } return 0; } static inline void njsc32_cmd_init(struct njsc32_cmd *cmd) { cmd->c_flags = 0; /* scatter/gather table */ cmd->c_sgtdmaaddr = NJSC32_CMD_DMAADDR_SGT(cmd, 0); cmd->c_sgoffset = 0; cmd->c_sgfixcnt = 0; /* data pointer */ cmd->c_dp_cur = cmd->c_dp_saved = cmd->c_dp_max = 0; } static inline void njsc32_init_msgout(struct njsc32_softc *sc) { sc->sc_msgoutlen = 0; sc->sc_msgoutidx = 0; } static void njsc32_add_msgout(struct njsc32_softc *sc, int byte) { if (sc->sc_msgoutlen >= NJSC32_MSGOUT_LEN) { printf("njsc32_add_msgout: too many\n"); return; } sc->sc_msgout[sc->sc_msgoutlen++] = byte; } static u_int32_t njsc32_get_auto_msgout(struct njsc32_softc *sc) { u_int32_t val; u_int8_t *p; val = 0; p = sc->sc_msgout; switch (sc->sc_msgoutlen) { /* 31-24 23-16 15-8 7 ... 1 0 */ case 3: /* MSG3 MSG2 MSG1 V --- cnt */ val |= *p++ << NJSC32_MSGOUT_MSG1_SHIFT; /* FALLTHROUGH */ case 2: /* MSG2 MSG1 --- V --- cnt */ val |= *p++ << NJSC32_MSGOUT_MSG2_SHIFT; /* FALLTHROUGH */ case 1: /* MSG1 --- --- V --- cnt */ val |= *p++ << NJSC32_MSGOUT_MSG3_SHIFT; val |= NJSC32_MSGOUT_VALID | sc->sc_msgoutlen; break; default: break; } return val; } #ifdef NJSC32_DUALEDGE /* add Wide Data Transfer Request to the next Message Out */ static void njsc32_msgout_wdtr(struct njsc32_softc *sc, int width) { njsc32_add_msgout(sc, MSG_EXTENDED); njsc32_add_msgout(sc, MSG_EXT_WDTR_LEN); njsc32_add_msgout(sc, MSG_EXT_WDTR); njsc32_add_msgout(sc, width); } #endif /* add Synchronous Data Transfer Request to the next Message Out */ static void njsc32_msgout_sdtr(struct njsc32_softc *sc, int period, int offset) { njsc32_add_msgout(sc, MSG_EXTENDED); njsc32_add_msgout(sc, MSG_EXT_SDTR_LEN); njsc32_add_msgout(sc, MSG_EXT_SDTR); njsc32_add_msgout(sc, period); njsc32_add_msgout(sc, offset); } static void njsc32_negotiate_xfer(struct njsc32_softc *sc, struct njsc32_target *target) { /* initial negotiation state */ if (target->t_state == NJSC32_TARST_INIT) { #ifdef NJSC32_DUALEDGE if (target->t_flags & NJSC32_TARF_DE) target->t_state = NJSC32_TARST_DE; else #endif if (target->t_flags & NJSC32_TARF_SYNC) target->t_state = NJSC32_TARST_SDTR; else target->t_state = NJSC32_TARST_DONE; } switch (target->t_state) { default: case NJSC32_TARST_INIT: #ifdef DIAGNOSTIC panic("njsc32_negotiate_xfer"); /* NOTREACHED */ #endif /* FALLTHROUGH */ case NJSC32_TARST_DONE: /* no more work */ break; #ifdef NJSC32_DUALEDGE case NJSC32_TARST_DE: njsc32_msgout_wdtr(sc, 0xde /* XXX? */); break; case NJSC32_TARST_WDTR: njsc32_msgout_wdtr(sc, MSG_EXT_WDTR_BUS_8_BIT); break; #endif case NJSC32_TARST_SDTR: njsc32_msgout_sdtr(sc, sc->sc_synct[sc->sc_sync_max].sp_period, NJSC32_SYNCOFFSET_MAX); break; case NJSC32_TARST_ASYNC: njsc32_msgout_sdtr(sc, NJSC32_SYNCPERIOD_ASYNC, NJSC32_SYNCOFFSET_ASYNC); break; } } /* turn LED on */ static inline void njsc32_led_on(struct njsc32_softc *sc) { njsc32_ireg_write_1(sc, NJSC32_IREG_EXT_PORT, NJSC32_EXTPORT_LED_ON); } /* turn LED off */ static inline void njsc32_led_off(struct njsc32_softc *sc) { njsc32_ireg_write_1(sc, NJSC32_IREG_EXT_PORT, NJSC32_EXTPORT_LED_OFF); } static void njsc32_arbitration_failed(struct njsc32_softc *sc) { struct njsc32_cmd *cmd; if ((cmd = sc->sc_curcmd) == NULL || sc->sc_stat != NJSC32_STAT_ARBIT) return; if ((cmd->c_xs->xs_control & XS_CTL_POLL) == 0) callout_stop(&cmd->c_xs->xs_callout); sc->sc_stat = NJSC32_STAT_IDLE; sc->sc_curcmd = NULL; /* the command is no longer active */ if (--sc->sc_nusedcmds == 0) njsc32_led_off(sc); } static inline void njsc32_cmd_load(struct njsc32_softc *sc, struct njsc32_cmd *cmd) { struct njsc32_target *target; struct scsipi_xfer *xs; int i, control, lun; u_int32_t msgoutreg; #ifdef NJSC32_AUTOPARAM struct njsc32_autoparam *ap; #endif xs = cmd->c_xs; #ifdef NJSC32_AUTOPARAM ap = &sc->sc_cmdpg->dp_ap; #else /* reset CDB pointer */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, NJSC32_CMD_CLEAR_CDB_FIFO_PTR); #endif /* CDB */ TPRINTC(cmd, ("njsc32_cmd_load: CDB")); for (i = 0; i < xs->cmdlen; i++) { #ifdef NJSC32_AUTOPARAM ap->ap_cdb[i].cdb_data = ((u_int8_t *)xs->cmd)[i]; #else njsc32_write_1(sc, NJSC32_REG_COMMAND_DATA, ((u_int8_t *)xs->cmd)[i]); #endif TPRINTF((" %02x", ((u_int8_t *)cmd->c_xs->cmd)[i])); } #ifdef NJSC32_AUTOPARAM /* XXX needed? */ for ( ; i < NJSC32_AUTOPARAM_CDBLEN; i++) ap->ap_cdb[i].cdb_data = 0; #endif control = xs->xs_control; /* * Message Out */ njsc32_init_msgout(sc); /* Identify */ lun = xs->xs_periph->periph_lun; njsc32_add_msgout(sc, (control & XS_CTL_REQSENSE) ? MSG_IDENTIFY(lun, 0) : MSG_IDENTIFY(lun, 1)); /* tagged queueing */ if (control & XS_CTL_TAGMASK) { njsc32_add_msgout(sc, xs->xs_tag_type); njsc32_add_msgout(sc, xs->xs_tag_id); TPRINTF((" (tag %#x %#x)\n", xs->xs_tag_type, xs->xs_tag_id)); } TPRINTF(("\n")); target = cmd->c_target; /* transfer negotiation */ if (control & XS_CTL_REQSENSE) target->t_state = NJSC32_TARST_INIT; njsc32_negotiate_xfer(sc, target); msgoutreg = njsc32_get_auto_msgout(sc); #ifdef NJSC32_AUTOPARAM ap->ap_msgout = htole32(msgoutreg); ap->ap_sync = target->t_sync; ap->ap_ackwidth = target->t_ackwidth; ap->ap_targetid = target->t_targetid; ap->ap_sample = target->t_sample; ap->ap_cmdctl = htole16(NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_COMMAND_PHASE | NJSC32_CMD_AUTO_SCSI_START | NJSC32_CMD_AUTO_ATN | NJSC32_CMD_AUTO_MSGIN_00_04 | NJSC32_CMD_AUTO_MSGIN_02); #ifdef NJSC32_DUALEDGE ap->ap_xferctl = htole16(cmd->c_xferctl | target->t_xferctl); #else ap->ap_xferctl = htole16(cmd->c_xferctl); #endif ap->ap_sgtdmaaddr = htole32(cmd->c_sgtdmaaddr); /* sync njsc32_autoparam */ bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_cmdpg, offsetof(struct njsc32_dma_page, dp_ap), /* offset */ sizeof(struct njsc32_autoparam), BUS_DMASYNC_PREWRITE); /* autoparam DMA address */ njsc32_write_4(sc, NJSC32_REG_SGT_ADR, sc->sc_ap_dma); /* start command (autoparam) */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_PARAMETER); #else /* not NJSC32_AUTOPARAM */ njsc32_write_4(sc, NJSC32_REG_SCSI_MSG_OUT, msgoutreg); /* load parameters */ njsc32_write_1(sc, NJSC32_REG_TARGET_ID, target->t_targetid); njsc32_write_1(sc, NJSC32_REG_SYNC, target->t_sync); njsc32_write_1(sc, NJSC32_REG_ACK_WIDTH, target->t_ackwidth); njsc32_write_1(sc, NJSC32_REG_SREQ_SAMPLING, target->t_sample); njsc32_write_4(sc, NJSC32_REG_SGT_ADR, cmd->c_sgtdmaaddr); #ifdef NJSC32_DUALEDGE njsc32_write_2(sc, NJSC32_REG_TRANSFER, cmd->c_xferctl | target->t_xferctl); #else njsc32_write_2(sc, NJSC32_REG_TRANSFER, cmd->c_xferctl); #endif /* start AutoSCSI */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_COMMAND_PHASE | NJSC32_CMD_AUTO_SCSI_START | NJSC32_CMD_AUTO_ATN | NJSC32_CMD_AUTO_MSGIN_00_04 | NJSC32_CMD_AUTO_MSGIN_02); #endif /* not NJSC32_AUTOPARAM */ } /* Note: must be called at splbio() */ static void njsc32_start(struct njsc32_softc *sc) { struct njsc32_cmd *cmd; /* get a command to issue */ TAILQ_FOREACH(cmd, &sc->sc_reqcmd, c_q) { if (cmd->c_lu->lu_cmd == NULL && ((cmd->c_flags & NJSC32_CMD_TAGGED) || TAILQ_EMPTY(&cmd->c_lu->lu_q))) break; /* OK, the logical unit is free */ } if (!cmd) goto out; /* no work to do */ /* request will always fail if not in bus free phase */ if (njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_MONITOR) != NJSC32_BUSMON_BUSFREE) goto busy; /* clear parity error and enable parity detection */ njsc32_write_1(sc, NJSC32_REG_PARITY_CONTROL, NJSC32_PARITYCTL_CHECK_ENABLE | NJSC32_PARITYCTL_CLEAR_ERROR); njsc32_cmd_load(sc, cmd); if (sc->sc_nusedcmds++ == 0) njsc32_led_on(sc); sc->sc_curcmd = cmd; sc->sc_stat = NJSC32_STAT_ARBIT; if ((cmd->c_xs->xs_control & XS_CTL_POLL) == 0) { callout_reset(&cmd->c_xs->xs_callout, mstohz(cmd->c_xs->timeout), njsc32_cmdtimeout, cmd); } return; busy: /* XXX retry counter */ TPRINTF(("%s: njsc32_start: busy\n", sc->sc_dev.dv_xname)); njsc32_write_2(sc, NJSC32_REG_TIMER, NJSC32_ARBITRATION_RETRY_TIME); out: njsc32_write_2(sc, NJSC32_REG_TRANSFER, 0); } static void njsc32_run_xfer(struct njsc32_softc *sc, struct scsipi_xfer *xs) { struct scsipi_periph *periph; int control; int lun; struct njsc32_cmd *cmd; int s, i, error; periph = xs->xs_periph; KASSERT((unsigned)periph->periph_target <= NJSC32_MAX_TARGET_ID); control = xs->xs_control; lun = periph->periph_lun; /* * get a free cmd * (scsipi layer knows the number of cmds, so this shall never fail) */ s = splbio(); cmd = TAILQ_FIRST(&sc->sc_freecmd); KASSERT(cmd); TAILQ_REMOVE(&sc->sc_freecmd, cmd, c_q); splx(s); /* * build a request */ njsc32_cmd_init(cmd); cmd->c_xs = xs; cmd->c_target = &sc->sc_targets[periph->periph_target]; cmd->c_lu = &cmd->c_target->t_lus[lun]; /* tagged queueing */ if (control & XS_CTL_TAGMASK) { cmd->c_flags |= NJSC32_CMD_TAGGED; if (control & XS_CTL_HEAD_TAG) cmd->c_flags |= NJSC32_CMD_TAGGED_HEAD; } /* map DMA buffer */ cmd->c_datacnt = xs->datalen; if (xs->datalen) { /* Is XS_CTL_DATA_UIO ever used anywhere? */ KASSERT((control & XS_CTL_DATA_UIO) == 0); error = bus_dmamap_load(sc->sc_dmat, cmd->c_dmamap_xfer, xs->data, xs->datalen, NULL, ((control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | ((control & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); switch (error) { case 0: break; case ENOMEM: case EAGAIN: xs->error = XS_RESOURCE_SHORTAGE; goto map_failed; default: xs->error = XS_DRIVER_STUFFUP; map_failed: printf("%s: njsc32_run_xfer: map failed, error %d\n", sc->sc_dev.dv_xname, error); /* put it back to free command list */ s = splbio(); TAILQ_INSERT_HEAD(&sc->sc_freecmd, cmd, c_q); splx(s); /* abort this transfer */ scsipi_done(xs); return; } bus_dmamap_sync(sc->sc_dmat, cmd->c_dmamap_xfer, 0, cmd->c_dmamap_xfer->dm_mapsize, (control & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); for (i = 0; i < cmd->c_dmamap_xfer->dm_nsegs; i++) { cmd->c_sgt[i].sg_addr = htole32(cmd->c_dmamap_xfer->dm_segs[i].ds_addr); cmd->c_sgt[i].sg_len = htole32(cmd->c_dmamap_xfer->dm_segs[i].ds_len); } /* end mark */ cmd->c_sgt[i - 1].sg_len |= htole32(NJSC32_SGT_ENDMARK); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_cmdpg, (char *)cmd->c_sgt - (char *)sc->sc_cmdpg, /* offset */ NJSC32_SIZE_SGT, BUS_DMASYNC_PREWRITE); cmd->c_flags |= NJSC32_CMD_DMA_MAPPED; /* enable transfer */ cmd->c_xferctl = NJSC32_XFR_TRANSFER_GO | NJSC32_XFR_BM_START | NJSC32_XFR_ALL_COUNT_CLR; /* XXX How can we specify the DMA direction? */ #if 0 /* faster write mode? (doesn't work) */ if ((control & XS_CTL_DATA_IN) == 0) cmd->c_xferctl |= NJSC32_XFR_ADVANCED_BM_WRITE; #endif } else { /* no data transfer */ cmd->c_xferctl = 0; } /* queue request */ s = splbio(); TAILQ_INSERT_TAIL(&sc->sc_reqcmd, cmd, c_q); /* start the controller if idle */ if (sc->sc_stat == NJSC32_STAT_IDLE) njsc32_start(sc); splx(s); if (control & XS_CTL_POLL) { /* wait for completion */ /* XXX should handle timeout? */ while ((xs->xs_status & XS_STS_DONE) == 0) { delay(1000); njsc32_intr(sc); } } } static void njsc32_end_cmd(struct njsc32_softc *sc, struct njsc32_cmd *cmd, scsipi_xfer_result_t result) { struct scsipi_xfer *xs; int s; #ifdef DIAGNOSTIC struct njsc32_cmd *c; #endif KASSERT(cmd); #ifdef DIAGNOSTIC s = splbio(); TAILQ_FOREACH(c, &sc->sc_freecmd, c_q) { if (cmd == c) panic("njsc32_end_cmd: already in free list"); } splx(s); #endif xs = cmd->c_xs; if (cmd->c_flags & NJSC32_CMD_DMA_MAPPED) { if (cmd->c_datacnt) { bus_dmamap_sync(sc->sc_dmat, cmd->c_dmamap_xfer, 0, cmd->c_dmamap_xfer->dm_mapsize, (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_cmdpg, (char *)cmd->c_sgt - (char *)sc->sc_cmdpg, NJSC32_SIZE_SGT, BUS_DMASYNC_POSTWRITE); } bus_dmamap_unload(sc->sc_dmat, cmd->c_dmamap_xfer); cmd->c_flags &= ~NJSC32_CMD_DMA_MAPPED; } s = splbio(); if ((xs->xs_control & XS_CTL_POLL) == 0) callout_stop(&xs->xs_callout); TAILQ_INSERT_HEAD(&sc->sc_freecmd, cmd, c_q); splx(s); xs->error = result; scsipi_done(xs); if (--sc->sc_nusedcmds == 0) njsc32_led_off(sc); } /* * request from scsipi layer */ static void njsc32_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) { struct njsc32_softc *sc; struct scsipi_xfer_mode *xm; struct njsc32_target *target; sc = (void *)chan->chan_adapter->adapt_dev; switch (req) { case ADAPTER_REQ_RUN_XFER: njsc32_run_xfer(sc, arg); break; case ADAPTER_REQ_GROW_RESOURCES: /* not supported */ break; case ADAPTER_REQ_SET_XFER_MODE: xm = arg; target = &sc->sc_targets[xm->xm_target]; target->t_flags = 0; if (xm->xm_mode & PERIPH_CAP_TQING) target->t_flags |= NJSC32_TARF_TAG; if (xm->xm_mode & PERIPH_CAP_SYNC) { target->t_flags |= NJSC32_TARF_SYNC; #ifdef NJSC32_DUALEDGE if (sc->sc_model & NJSC32_FLAG_DUALEDGE) target->t_flags |= NJSC32_TARF_DE; #endif } #ifdef NJSC32_DUALEDGE target->t_xferctl = 0; #endif target->t_state = NJSC32_TARST_INIT; njsc32_target_async(sc, target); break; default: break; } } static void njsc32_scsipi_minphys(struct buf *bp) { if (bp->b_bcount > NJSC32_MAX_XFER) bp->b_bcount = NJSC32_MAX_XFER; minphys(bp); } static void njsc32_reset_bus(struct njsc32_softc *sc) { int s; DPRINTF(("%s: njsc32_reset_bus:\n", sc->sc_dev.dv_xname)); /* SCSI bus reset */ njsc32_write_1(sc, NJSC32_REG_SCSI_BUS_CONTROL, NJSC32_SBCTL_RST); delay(NJSC32_RESET_HOLD_TIME); njsc32_write_1(sc, NJSC32_REG_SCSI_BUS_CONTROL, 0); /* clear transfer */ s = splbio(); njsc32_reset_detected(sc); splx(s); } /* * clear running/disconnected commands */ static void njsc32_clear_cmds(struct njsc32_softc *sc, scsipi_xfer_result_t cmdresult) { struct njsc32_cmd *cmd; int id, lun; struct njsc32_lu *lu; njsc32_arbitration_failed(sc); /* clear current transfer */ if ((cmd = sc->sc_curcmd) != NULL) { sc->sc_curcmd = NULL; njsc32_end_cmd(sc, cmd, cmdresult); } /* clear disconnected transfers */ for (id = 0; id <= NJSC32_MAX_TARGET_ID; id++) { for (lun = 0; lun < NJSC32_NLU; lun++) { lu = &sc->sc_targets[id].t_lus[lun]; if ((cmd = lu->lu_cmd) != NULL) { lu->lu_cmd = NULL; njsc32_end_cmd(sc, cmd, cmdresult); } while ((cmd = TAILQ_FIRST(&lu->lu_q)) != NULL) { TAILQ_REMOVE(&lu->lu_q, cmd, c_q); njsc32_end_cmd(sc, cmd, cmdresult); } } } } static void njsc32_reset_detected(struct njsc32_softc *sc) { njsc32_clear_cmds(sc, XS_RESET); njsc32_init_targets(sc); sc->sc_stat = NJSC32_STAT_IDLE; KASSERT(sc->sc_nusedcmds == 0); scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_RESET, NULL); } static int njsc32_scsipi_ioctl(struct scsipi_channel *chan, u_long cmd, caddr_t addr, int flag, struct proc *p) { struct njsc32_softc *sc = (void *)chan->chan_adapter->adapt_dev; switch (cmd) { case SCBUSIORESET: njsc32_init(sc, 0); return 0; default: break; } return ENOTTY; } /* * set current data pointer */ static inline void njsc32_set_cur_ptr(struct njsc32_cmd *cmd, u_int32_t pos) { /* new current data pointer */ cmd->c_dp_cur = pos; /* update number of bytes transferred */ if (pos > cmd->c_dp_max) cmd->c_dp_max = pos; } /* * set data pointer for the next transfer */ static void njsc32_set_ptr(struct njsc32_softc *sc, struct njsc32_cmd *cmd, u_int32_t pos) { struct njsc32_sgtable *sg; unsigned sgte; u_int32_t len; /* set current pointer */ njsc32_set_cur_ptr(cmd, pos); /* undo previous fix if any */ if (cmd->c_sgfixcnt != 0) { sg = &cmd->c_sgt[cmd->c_sgoffset]; sg->sg_addr = htole32(le32toh(sg->sg_addr) - cmd->c_sgfixcnt); sg->sg_len = htole32(le32toh(sg->sg_len) + cmd->c_sgfixcnt); cmd->c_sgfixcnt = 0; } if (pos >= cmd->c_datacnt) { /* transfer done */ #if 1 /*def DIAGNOSTIC*/ if (pos > cmd->c_datacnt) printf("%s: pos %u too large\n", sc->sc_dev.dv_xname, pos - cmd->c_datacnt); #endif cmd->c_xferctl = 0; /* XXX correct? */ return; } for (sgte = 0, sg = cmd->c_sgt; sgte < NJSC32_NUM_SG && pos > 0; sgte++, sg++) { len = le32toh(sg->sg_len) & ~NJSC32_SGT_ENDMARK; if (pos < len) { sg->sg_addr = htole32(le32toh(sg->sg_addr) + pos); sg->sg_len = htole32(le32toh(sg->sg_len) - pos); cmd->c_sgfixcnt = pos; break; } pos -= len; #ifdef DIAGNOSTIC if (sg->sg_len & htole32(NJSC32_SGT_ENDMARK)) { panic("njsc32_set_ptr: bad pos"); } #endif } #ifdef DIAGNOSTIC if (sgte >= NJSC32_NUM_SG) panic("njsc32_set_ptr: bad sg"); #endif if (cmd->c_sgoffset != sgte) { cmd->c_sgoffset = sgte; cmd->c_sgtdmaaddr = NJSC32_CMD_DMAADDR_SGT(cmd, sgte); } /* XXX overkill */ bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_cmdpg, (char *)cmd->c_sgt - (char *)sc->sc_cmdpg, /* offset */ NJSC32_SIZE_SGT, BUS_DMASYNC_PREWRITE); } /* * save data pointer */ static inline void njsc32_save_ptr(struct njsc32_cmd *cmd) { cmd->c_dp_saved = cmd->c_dp_cur; } static void njsc32_assert_ack(struct njsc32_softc *sc) { u_int8_t reg; reg = njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_CONTROL); reg |= NJSC32_SBCTL_ACK | NJSC32_SBCTL_ACK_ENABLE; #if 0 /* needed? */ reg |= NJSC32_SBCTL_AUTODIRECTION; #endif njsc32_write_1(sc, NJSC32_REG_SCSI_BUS_CONTROL, reg); } static void njsc32_negate_ack(struct njsc32_softc *sc) { u_int8_t reg; reg = njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_CONTROL); #if 0 /* needed? */ reg |= NJSC32_SBCTL_ACK_ENABLE; reg |= NJSC32_SBCTL_AUTODIRECTION; #endif reg &= ~NJSC32_SBCTL_ACK; njsc32_write_1(sc, NJSC32_REG_SCSI_BUS_CONTROL, reg); } static void njsc32_wait_req_negate(struct njsc32_softc *sc) { int cnt; for (cnt = 0; cnt < NJSC32_REQ_TIMEOUT; cnt++) { if ((njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_MONITOR) & NJSC32_BUSMON_REQ) == 0) return; delay(1); } printf("%s: njsc32_wait_req_negate: timed out\n", sc->sc_dev.dv_xname); } static void njsc32_reconnect(struct njsc32_softc *sc, struct njsc32_cmd *cmd) { struct scsipi_xfer *xs; xs = cmd->c_xs; if ((xs->xs_control & XS_CTL_POLL) == 0) { callout_stop(&xs->xs_callout); callout_reset(&xs->xs_callout, mstohz(xs->timeout), njsc32_cmdtimeout, cmd); } /* Reconnection implies Restore Pointers */ njsc32_set_ptr(sc, cmd, cmd->c_dp_saved); } static enum njsc32_reselstat njsc32_resel_identify(struct njsc32_softc *sc, int lun, struct njsc32_cmd **pcmd) { int targetid; struct njsc32_lu *plu; struct njsc32_cmd *cmd; switch (sc->sc_stat) { case NJSC32_STAT_RESEL: break; /* OK */ case NJSC32_STAT_RESEL_LUN: case NJSC32_STAT_RECONNECT: /* * accept and ignore if the LUN is the same as the current one, * reject otherwise. */ return sc->sc_resellun == lun ? NJSC32_RESEL_THROUGH : NJSC32_RESEL_ERROR; default: printf("%s: njsc32_resel_identify: not in reselection\n", sc->sc_dev.dv_xname); return NJSC32_RESEL_ERROR; } targetid = sc->sc_reselid; TPRINTF(("%s: njsc32_resel_identify: reselection lun %d\n", sc->sc_dev.dv_xname, lun)); if (targetid > NJSC32_MAX_TARGET_ID || lun >= NJSC32_NLU) return NJSC32_RESEL_ERROR; sc->sc_resellun = lun; plu = &sc->sc_targets[targetid].t_lus[lun]; if ((cmd = plu->lu_cmd) != NULL) { sc->sc_stat = NJSC32_STAT_RECONNECT; plu->lu_cmd = NULL; *pcmd = cmd; TPRINTC(cmd, ("njsc32_resel_identify: I_T_L nexus\n")); njsc32_reconnect(sc, cmd); return NJSC32_RESEL_COMPLETE; } else if (!TAILQ_EMPTY(&plu->lu_q)) { /* wait for tag */ sc->sc_stat = NJSC32_STAT_RESEL_LUN; return NJSC32_RESEL_THROUGH; } /* no disconnected commands */ return NJSC32_RESEL_ERROR; } static enum njsc32_reselstat njsc32_resel_tag(struct njsc32_softc *sc, int tag, struct njsc32_cmd **pcmd) { struct njsc32_cmd_head *head; struct njsc32_cmd *cmd; TPRINTF(("%s: njsc32_resel_tag: reselection tag %d\n", sc->sc_dev.dv_xname, tag)); if (sc->sc_stat != NJSC32_STAT_RESEL_LUN) return NJSC32_RESEL_ERROR; head = &sc->sc_targets[sc->sc_reselid].t_lus[sc->sc_resellun].lu_q; /* XXX slow? */ /* search for the command of the tag */ TAILQ_FOREACH(cmd, head, c_q) { if (cmd->c_xs->xs_tag_id == tag) { sc->sc_stat = NJSC32_STAT_RECONNECT; TAILQ_REMOVE(head, cmd, c_q); *pcmd = cmd; TPRINTC(cmd, ("njsc32_resel_tag: I_T_L_Q nexus\n")); njsc32_reconnect(sc, cmd); return NJSC32_RESEL_COMPLETE; } } /* no disconnected commands */ return NJSC32_RESEL_ERROR; } /* * Reload parameters and restart AutoSCSI. * * XXX autoparam doesn't work as expected and we can't use it here. */ static void njsc32_cmd_reload(struct njsc32_softc *sc, struct njsc32_cmd *cmd, int cctl) { struct njsc32_target *target; target = cmd->c_target; /* clear parity error and enable parity detection */ njsc32_write_1(sc, NJSC32_REG_PARITY_CONTROL, NJSC32_PARITYCTL_CHECK_ENABLE | NJSC32_PARITYCTL_CLEAR_ERROR); /* load parameters */ njsc32_write_1(sc, NJSC32_REG_SYNC, target->t_sync); njsc32_write_1(sc, NJSC32_REG_ACK_WIDTH, target->t_ackwidth); njsc32_write_1(sc, NJSC32_REG_SREQ_SAMPLING, target->t_sample); njsc32_write_4(sc, NJSC32_REG_SGT_ADR, cmd->c_sgtdmaaddr); #ifdef NJSC32_DUALEDGE njsc32_write_2(sc, NJSC32_REG_TRANSFER, cmd->c_xferctl | target->t_xferctl); #else njsc32_write_2(sc, NJSC32_REG_TRANSFER, cmd->c_xferctl); #endif /* start AutoSCSI */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, cctl); sc->sc_curcmd = cmd; } static void njsc32_update_xfer_mode(struct njsc32_softc *sc, struct njsc32_target *target) { struct scsipi_xfer_mode xm; xm.xm_target = target - sc->sc_targets; /* target ID */ xm.xm_mode = 0; xm.xm_period = target->t_syncperiod; xm.xm_offset = target->t_syncoffset; if (xm.xm_offset != 0) xm.xm_mode |= PERIPH_CAP_SYNC; if (target->t_flags & NJSC32_TARF_TAG) xm.xm_mode |= PERIPH_CAP_TQING; scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); } static void njsc32_msgin(struct njsc32_softc *sc) { u_int8_t msg0, msg; int msgcnt; struct njsc32_cmd *cmd; enum njsc32_reselstat rstat; int cctl = 0; u_int32_t ptr; /* unsigned type ensures 2-complement calculation */ u_int32_t msgout = 0; boolean_t reload_params = FALSE; struct njsc32_target *target; int idx, period, offset; /* * we are in Message In, so the previous Message Out should have * been done. */ njsc32_init_msgout(sc); /* get a byte of Message In */ msg = njsc32_read_1(sc, NJSC32_REG_DATA_IN); TPRINTF(("%s: njsc32_msgin: got %#x\n", sc->sc_dev.dv_xname, msg)); if ((msgcnt = sc->sc_msgincnt) < NJSC32_MSGIN_LEN) sc->sc_msginbuf[sc->sc_msgincnt] = msg; njsc32_assert_ack(sc); msg0 = sc->sc_msginbuf[0]; cmd = sc->sc_curcmd; /* check for parity error */ if (njsc32_read_1(sc, NJSC32_REG_PARITY_STATUS) & NJSC32_PARITYSTATUS_ERROR_LSB) { printf("%s: msgin: parity error\n", sc->sc_dev.dv_xname); /* clear parity error */ njsc32_write_1(sc, NJSC32_REG_PARITY_CONTROL, NJSC32_PARITYCTL_CHECK_ENABLE | NJSC32_PARITYCTL_CLEAR_ERROR); /* respond as Message Parity Error */ njsc32_add_msgout(sc, MSG_PARITY_ERROR); /* clear Message In */ sc->sc_msgincnt = 0; goto reply; } #define WAITNEXTMSG do { sc->sc_msgincnt++; goto restart; } while (0) #define MSGCOMPLETE do { sc->sc_msgincnt = 0; goto restart; } while (0) if (MSG_ISIDENTIFY(msg0)) { /* * Got Identify message from target. */ if ((msg0 & ~MSG_IDENTIFY_LUNMASK) != MSG_IDENTIFYFLAG || (rstat = njsc32_resel_identify(sc, msg0 & MSG_IDENTIFY_LUNMASK, &cmd)) == NJSC32_RESEL_ERROR) { /* * invalid Identify -> Reject */ goto reject; } if (rstat == NJSC32_RESEL_COMPLETE) reload_params = TRUE; MSGCOMPLETE; } if (msg0 == MSG_SIMPLE_Q_TAG) { if (msgcnt == 0) WAITNEXTMSG; /* got whole message */ sc->sc_msgincnt = 0; if ((rstat = njsc32_resel_tag(sc, sc->sc_msginbuf[1], &cmd)) == NJSC32_RESEL_ERROR) { /* * invalid Simple Queue Tag -> Abort Tag */ printf("%s: msgin: invalid tag\n", sc->sc_dev.dv_xname); njsc32_add_msgout(sc, MSG_ABORT_TAG); goto reply; } if (rstat == NJSC32_RESEL_COMPLETE) reload_params = TRUE; MSGCOMPLETE; } /* I_T_L or I_T_L_Q nexus should be established now */ if (cmd == NULL) { printf("%s: msgin %#x without nexus -- sending abort\n", sc->sc_dev.dv_xname, msg0); njsc32_add_msgout(sc, MSG_ABORT); goto reply; } /* * extended message * 0x01 * ( [ ...]) */ #define EXTLENOFF 1 #define EXTCODEOFF 2 if (msg0 == MSG_EXTENDED) { if (msgcnt < EXTLENOFF || msgcnt < EXTLENOFF + 1 + (u_int8_t)(sc->sc_msginbuf[EXTLENOFF] - 1)) WAITNEXTMSG; /* got whole message */ sc->sc_msgincnt = 0; switch (sc->sc_msginbuf[EXTCODEOFF]) { case 0: /* Modify Data Pointer */ if (msgcnt != 5 + EXTCODEOFF - 1) break; /* * parameter is 32bit big-endian signed (2-complement) * value */ ptr = (sc->sc_msginbuf[EXTCODEOFF + 1] << 24) | (sc->sc_msginbuf[EXTCODEOFF + 2] << 16) | (sc->sc_msginbuf[EXTCODEOFF + 3] << 8) | sc->sc_msginbuf[EXTCODEOFF + 4]; /* new pointer */ ptr += cmd->c_dp_cur; /* ignore overflow */ /* reject if ptr is not in data buffer */ if (ptr > cmd->c_datacnt) break; njsc32_set_ptr(sc, cmd, ptr); goto restart; case MSG_EXT_SDTR: /* Synchronous Data Transfer Request */ DPRINTC(cmd, ("SDTR %#x %#x\n", sc->sc_msginbuf[EXTCODEOFF + 1], sc->sc_msginbuf[EXTCODEOFF + 2])); if (msgcnt != MSG_EXT_SDTR_LEN + EXTCODEOFF-1) break; /* reject */ target = cmd->c_target; /* lookup sync period parameters */ period = sc->sc_msginbuf[EXTCODEOFF + 1]; for (idx = sc->sc_sync_max; idx < NJSC32_NSYNCT; idx++) if (sc->sc_synct[idx].sp_period >= period) { period = sc->sc_synct[idx].sp_period; break; } if (idx >= NJSC32_NSYNCT) { /* * We can't meet the timing condition that * the target requests -- use async. */ njsc32_target_async(sc, target); njsc32_update_xfer_mode(sc, target); if (target->t_state == NJSC32_TARST_SDTR) { /* * We started SDTR exchange -- start * negotiation again and request async. */ target->t_state = NJSC32_TARST_ASYNC; njsc32_negotiate_xfer(sc, target); goto reply; } else { /* * The target started SDTR exchange * -- just reject and fallback * to async. */ goto reject; } } /* check sync offset */ offset = sc->sc_msginbuf[EXTCODEOFF + 2]; if (offset > NJSC32_SYNCOFFSET_MAX) { if (target->t_state == NJSC32_TARST_SDTR) { printf("%s: wrong sync offset: %d\n", cmd->c_xs->xs_periph->periph_dev->dv_xname, offset); /* XXX what to do? */ } offset = NJSC32_SYNCOFFSET_MAX; } target->t_ackwidth = sc->sc_synct[idx].sp_ackw; target->t_sample = sc->sc_synct[idx].sp_sample; target->t_syncperiod = period; target->t_syncoffset = offset; target->t_sync = NJSC32_SYNC_VAL(idx, offset); njsc32_update_xfer_mode(sc, target); if (target->t_state == NJSC32_TARST_SDTR) { target->t_state = NJSC32_TARST_DONE; } else { njsc32_msgout_sdtr(sc, period, offset); goto reply; } goto restart; case MSG_EXT_WDTR: /* Wide Data Transfer Request */ DPRINTC(cmd, ("WDTR %#x\n", sc->sc_msginbuf[EXTCODEOFF + 1])); #ifdef NJSC32_DUALEDGE if (msgcnt != MSG_EXT_WDTR_LEN + EXTCODEOFF-1) break; /* reject */ /* * T->I of this message is not used for * DualEdge negotiation, so the device * must not be a DualEdge device. * * XXX correct? */ target = cmd->c_target; target->t_xferctl = 0; switch (target->t_state) { case NJSC32_TARST_DE: if (sc->sc_msginbuf[EXTCODEOFF + 1] != MSG_EXT_WDTR_BUS_8_BIT) { /* * Oops, we got unexpected WDTR. * Negotiate for 8bit. */ target->t_state = NJSC32_TARST_WDTR; } else { target->t_state = NJSC32_TARST_SDTR; } njsc32_negotiate_xfer(sc, target); goto reply; case NJSC32_TARST_WDTR: if (sc->sc_msginbuf[EXTCODEOFF + 1] != MSG_EXT_WDTR_BUS_8_BIT) { printf("%s: unexpected transfer width: %#x\n", cmd->c_xs->xs_periph->periph_dev->dv_xname, sc->sc_msginbuf[EXTCODEOFF + 1]); /* XXX what to do? */ } target->t_state = NJSC32_TARST_SDTR; njsc32_negotiate_xfer(sc, target); goto reply; default: /* the target started WDTR exchange */ DPRINTC(cmd, ("WDTR from target\n")); target->t_state = NJSC32_TARST_SDTR; njsc32_target_async(sc, target); break; /* reject the WDTR (8bit transfer) */ } #endif /* NJSC32_DUALEDGE */ break; /* reject */ } DPRINTC(cmd, ("njsc32_msgin: reject ext msg %#x msgincnt %d\n", sc->sc_msginbuf[EXTCODEOFF], msgcnt)); goto reject; } /* 2byte messages */ if (MSG_IS2BYTE(msg0)) { if (msgcnt == 0) WAITNEXTMSG; /* got whole message */ sc->sc_msgincnt = 0; } switch (msg0) { case MSG_CMDCOMPLETE: /* 0x00 */ case MSG_SAVEDATAPOINTER: /* 0x02 */ case MSG_DISCONNECT: /* 0x04 */ /* handled by AutoSCSI */ PRINTC(cmd, ("msgin: unexpected msg: %#x\n", msg0)); break; case MSG_RESTOREPOINTERS: /* 0x03 */ /* restore data pointer to what was saved */ DPRINTC(cmd, ("njsc32_msgin: Restore Pointers\n")); njsc32_set_ptr(sc, cmd, cmd->c_dp_saved); reload_params = TRUE; MSGCOMPLETE; /* NOTREACHED */ break; #if 0 /* handled above */ case MSG_EXTENDED: /* 0x01 */ #endif case MSG_MESSAGE_REJECT: /* 0x07 */ target = cmd->c_target; DPRINTC(cmd, ("Reject tarst %d\n", target->t_state)); switch (target->t_state) { #ifdef NJSC32_DUALEDGE case NJSC32_TARST_WDTR: case NJSC32_TARST_DE: target->t_xferctl = 0; target->t_state = NJSC32_TARST_SDTR; njsc32_negotiate_xfer(sc, target); goto reply; #endif case NJSC32_TARST_SDTR: case NJSC32_TARST_ASYNC: njsc32_target_async(sc, target); target->t_state = NJSC32_TARST_DONE; njsc32_update_xfer_mode(sc, target); break; default: break; } goto restart; case MSG_NOOP: /* 0x08 */ #ifdef NJSC32_DUALEDGE target = cmd->c_target; if (target->t_state == NJSC32_TARST_DE) { aprint_normal("%s: DualEdge transfer\n", cmd->c_xs->xs_periph->periph_dev->dv_xname); target->t_xferctl = NJSC32_XFR_DUALEDGE_ENABLE; /* go to next negotiation */ target->t_state = NJSC32_TARST_SDTR; njsc32_negotiate_xfer(sc, target); goto reply; } #endif goto restart; case MSG_INITIATOR_DET_ERR: /* 0x05 I->T only */ case MSG_ABORT: /* 0x06 I->T only */ case MSG_PARITY_ERROR: /* 0x09 I->T only */ case MSG_LINK_CMD_COMPLETE: /* 0x0a */ case MSG_LINK_CMD_COMPLETEF: /* 0x0b */ case MSG_BUS_DEV_RESET: /* 0x0c I->T only */ case MSG_ABORT_TAG: /* 0x0d I->T only */ case MSG_CLEAR_QUEUE: /* 0x0e I->T only */ #if 0 /* handled above */ case MSG_SIMPLE_Q_TAG: /* 0x20 */ #endif case MSG_HEAD_OF_Q_TAG: /* 0x21 I->T only */ case MSG_ORDERED_Q_TAG: /* 0x22 I->T only */ case MSG_IGN_WIDE_RESIDUE: /* 0x23 */ default: #ifdef NJSC32_DEBUG PRINTC(cmd, ("msgin: unsupported msg: %#x", msg0)); if (MSG_IS2BYTE(msg0)) printf(" %#x", msg); printf("\n"); #endif break; } reject: njsc32_add_msgout(sc, MSG_MESSAGE_REJECT); reply: msgout = njsc32_get_auto_msgout(sc); restart: cctl = NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_COMMAND_PHASE | NJSC32_CMD_AUTO_SCSI_RESTART; /* * Be careful the second and latter bytes of Message In * shall not be absorbed by AutoSCSI. */ if (sc->sc_msgincnt == 0) cctl |= NJSC32_CMD_AUTO_MSGIN_00_04 | NJSC32_CMD_AUTO_MSGIN_02; if (sc->sc_msgoutlen != 0) cctl |= NJSC32_CMD_AUTO_ATN; njsc32_write_4(sc, NJSC32_REG_SCSI_MSG_OUT, msgout); /* (re)start AutoSCSI (may assert ATN) */ if (reload_params) { njsc32_cmd_reload(sc, cmd, cctl); } else { njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, cctl); } /* +ATN -> -REQ: need 90ns delay? */ njsc32_wait_req_negate(sc); /* wait for REQ negation */ njsc32_negate_ack(sc); return; } static void njsc32_msgout(struct njsc32_softc *sc) { int cctl; u_int8_t bus; unsigned n; if (sc->sc_msgoutlen == 0) { /* target entered to Message Out on unexpected timing */ njsc32_add_msgout(sc, MSG_NOOP); } cctl = NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_COMMAND_PHASE | NJSC32_CMD_AUTO_SCSI_RESTART | NJSC32_CMD_AUTO_MSGIN_00_04 | NJSC32_CMD_AUTO_MSGIN_02; /* make sure target is in Message Out phase */ bus = njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_MONITOR); if ((bus & NJSC32_BUSMON_PHASE_MASK) != NJSC32_PHASE_MESSAGE_OUT) { /* * Message Out is aborted by target. */ printf("%s: njsc32_msgout: phase change %#x\n", sc->sc_dev.dv_xname, bus); /* XXX what to do? */ /* restart AutoSCSI (negate ATN) */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, cctl); sc->sc_msgoutidx = 0; return; } n = sc->sc_msgoutidx; if (n == sc->sc_msgoutlen - 1) { /* * negate ATN before sending ACK */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, 0); sc->sc_msgoutidx = 0; /* target may retry Message Out */ } else { cctl |= NJSC32_CMD_AUTO_ATN; sc->sc_msgoutidx++; } /* Send Message Out */ njsc32_write_1(sc, NJSC32_REG_SCSI_OUT_LATCH, sc->sc_msgout[n]); /* DBn -> +ACK: need 55ns delay? */ njsc32_assert_ack(sc); njsc32_wait_req_negate(sc); /* wait for REQ negation */ /* restart AutoSCSI */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, cctl); njsc32_negate_ack(sc); /* * do not reset sc->sc_msgoutlen so the target * can retry Message Out phase */ } static void njsc32_cmdtimeout(void *arg) { struct njsc32_cmd *cmd = arg; struct njsc32_softc *sc; int s; PRINTC(cmd, ("command timeout\n")); sc = cmd->c_sc; s = splbio(); if (sc->sc_stat == NJSC32_STAT_ARBIT) njsc32_arbitration_failed(sc); else { sc->sc_curcmd = NULL; sc->sc_stat = NJSC32_STAT_IDLE; njsc32_end_cmd(sc, cmd, XS_TIMEOUT); } /* XXX? */ njsc32_init(sc, 1); /* bus reset */ splx(s); } static void njsc32_reseltimeout(void *arg) { struct njsc32_cmd *cmd = arg; struct njsc32_softc *sc; int s; PRINTC(cmd, ("reselection timeout\n")); sc = cmd->c_sc; s = splbio(); /* remove from disconnected list */ if (cmd->c_flags & NJSC32_CMD_TAGGED) { /* I_T_L_Q */ KASSERT(cmd->c_lu->lu_cmd == NULL); TAILQ_REMOVE(&cmd->c_lu->lu_q, cmd, c_q); } else { /* I_T_L */ KASSERT(cmd->c_lu->lu_cmd == cmd); cmd->c_lu->lu_cmd = NULL; } njsc32_end_cmd(sc, cmd, XS_TIMEOUT); /* XXX? */ njsc32_init(sc, 1); /* bus reset */ splx(s); } static inline void njsc32_end_auto(struct njsc32_softc *sc, struct njsc32_cmd *cmd, int auto_phase) { struct scsipi_xfer *xs; if (auto_phase & NJSC32_XPHASE_MSGIN_02) { /* Message In: 0x02 Save Data Pointer */ /* * Adjust saved data pointer * if the command is not completed yet. */ if ((auto_phase & NJSC32_XPHASE_MSGIN_00) == 0 && (auto_phase & (NJSC32_XPHASE_DATA_IN | NJSC32_XPHASE_DATA_OUT)) != 0) { njsc32_save_ptr(cmd); } TPRINTF(("BM %u, SGT %u, SACK %u, SAVED_ACK %u\n", njsc32_read_4(sc, NJSC32_REG_BM_CNT), njsc32_read_4(sc, NJSC32_REG_SGT_ADR), njsc32_read_4(sc, NJSC32_REG_SACK_CNT), njsc32_read_4(sc, NJSC32_REG_SAVED_ACK_CNT))); } xs = cmd->c_xs; if (auto_phase & NJSC32_XPHASE_MSGIN_00) { /* Command Complete */ TPRINTC(cmd, ("njsc32_intr: Command Complete\n")); switch (xs->status) { case SCSI_CHECK: case SCSI_QUEUE_FULL: case SCSI_BUSY: /* * scsipi layer will automatically handle the error */ njsc32_end_cmd(sc, cmd, XS_BUSY); break; default: xs->resid -= cmd->c_dp_max; njsc32_end_cmd(sc, cmd, XS_NOERROR); break; } } else if (auto_phase & NJSC32_XPHASE_MSGIN_04) { /* Disconnect */ TPRINTC(cmd, ("njsc32_intr: Disconnect\n")); /* for ill-designed devices */ if ((xs->xs_periph->periph_quirks & PQUIRK_AUTOSAVE) != 0) njsc32_save_ptr(cmd); /* * move current cmd to disconnected list */ if (cmd->c_flags & NJSC32_CMD_TAGGED) { /* I_T_L_Q */ if (cmd->c_flags & NJSC32_CMD_TAGGED_HEAD) TAILQ_INSERT_HEAD(&cmd->c_lu->lu_q, cmd, c_q); else TAILQ_INSERT_TAIL(&cmd->c_lu->lu_q, cmd, c_q); } else { /* I_T_L */ cmd->c_lu->lu_cmd = cmd; } /* * schedule timeout -- avoid being * disconnected forever */ if ((xs->xs_control & XS_CTL_POLL) == 0) { callout_stop(&xs->xs_callout); callout_reset(&xs->xs_callout, mstohz(xs->timeout), njsc32_reseltimeout, cmd); } } else { /* * target has come to Bus Free phase * probably to notify an error */ PRINTC(cmd, ("njsc32_intr: unexpected bus free\n")); /* try Request Sense */ xs->status = SCSI_CHECK; njsc32_end_cmd(sc, cmd, XS_BUSY); } } int njsc32_intr(void *arg) { struct njsc32_softc *sc = arg; u_int16_t intr; u_int8_t arbstat, bus_phase; int auto_phase; int idbit; struct njsc32_cmd *cmd; intr = njsc32_read_2(sc, NJSC32_REG_IRQ); if ((intr & NJSC32_IRQ_INTR_PENDING) == 0) return 0; /* not mine */ TPRINTF(("%s: njsc32_intr: %#x\n", sc->sc_dev.dv_xname, intr)); #if 0 /* I don't think this is required */ /* mask interrupts */ njsc32_write_2(sc, NJSC32_REG_IRQ, NJSC32_IRQ_MASK_ALL); #endif /* we got an interrupt, so stop the timer */ njsc32_write_2(sc, NJSC32_REG_TIMER, NJSC32_TIMER_STOP); if (intr & NJSC32_IRQ_SCSIRESET) { printf("%s: detected bus reset\n", sc->sc_dev.dv_xname); /* clear current request */ njsc32_reset_detected(sc); goto out; } if (sc->sc_stat == NJSC32_STAT_ARBIT) { cmd = sc->sc_curcmd; KASSERT(cmd); arbstat = njsc32_read_1(sc, NJSC32_REG_ARBITRATION_STAT); if (arbstat & (NJSC32_ARBSTAT_WIN | NJSC32_ARBSTAT_FAIL)) { /* * arbitration done */ /* clear arbitration status */ njsc32_write_1(sc, NJSC32_REG_SET_ARBITRATION, NJSC32_SETARB_CLEAR); if (arbstat & NJSC32_ARBSTAT_WIN) { TPRINTC(cmd, ("njsc32_intr: arbitration won\n")); TAILQ_REMOVE(&sc->sc_reqcmd, cmd, c_q); sc->sc_stat = NJSC32_STAT_CONNECT; } else { TPRINTC(cmd, ("njsc32_intr: arbitration failed\n")); njsc32_arbitration_failed(sc); /* XXX delay */ /* XXX retry counter */ } } } if (intr & NJSC32_IRQ_TIMER) { TPRINTF(("%s: njsc32_intr: timer interrupt\n", sc->sc_dev.dv_xname)); } if (intr & NJSC32_IRQ_RESELECT) { /* Reselection from a target */ njsc32_arbitration_failed(sc); /* just in case */ if ((cmd = sc->sc_curcmd) != NULL) { /* ? */ printf("%s: unexpected reselection\n", sc->sc_dev.dv_xname); sc->sc_curcmd = NULL; sc->sc_stat = NJSC32_STAT_IDLE; njsc32_end_cmd(sc, cmd, XS_DRIVER_STUFFUP); } idbit = njsc32_read_1(sc, NJSC32_REG_RESELECT_ID); if ((idbit & (1 << NJSC32_INITIATOR_ID)) == 0 || (sc->sc_reselid = ffs(idbit & ~NJSC32_INITIATOR_ID) -1) < 0) { printf("%s: invalid reselection (id: %#x)\n", sc->sc_dev.dv_xname, idbit); sc->sc_stat = NJSC32_STAT_IDLE; /* XXX ? */ } else { sc->sc_stat = NJSC32_STAT_RESEL; TPRINTF(("%s: njsc32_intr: reselection from %d\n", sc->sc_dev.dv_xname, sc->sc_reselid)); } } if (intr & NJSC32_IRQ_PHASE_CHANGE) { #if 1 /* XXX probably not needed */ if (sc->sc_stat == NJSC32_STAT_ARBIT) PRINTC(sc->sc_curcmd, ("njsc32_intr: cancel arbitration phase\n")); njsc32_arbitration_failed(sc); #endif /* current bus phase */ bus_phase = njsc32_read_1(sc, NJSC32_REG_SCSI_BUS_MONITOR) & NJSC32_BUSMON_PHASE_MASK; switch (bus_phase) { case NJSC32_PHASE_MESSAGE_IN: njsc32_msgin(sc); break; /* * target may suddenly become Status / Bus Free phase * to notify an error condition */ case NJSC32_PHASE_STATUS: printf("%s: unexpected bus phase: Status\n", sc->sc_dev.dv_xname); if ((cmd = sc->sc_curcmd) != NULL) { cmd->c_xs->status = njsc32_read_1(sc, NJSC32_REG_SCSI_CSB_IN); TPRINTC(cmd, ("njsc32_intr: Status %d\n", cmd->c_xs->status)); } break; case NJSC32_PHASE_BUSFREE: printf("%s: unexpected bus phase: Bus Free\n", sc->sc_dev.dv_xname); if ((cmd = sc->sc_curcmd) != NULL) { sc->sc_curcmd = NULL; sc->sc_stat = NJSC32_STAT_IDLE; if (cmd->c_xs->status != SCSI_QUEUE_FULL && cmd->c_xs->status != SCSI_BUSY) cmd->c_xs->status = SCSI_CHECK;/* XXX */ njsc32_end_cmd(sc, cmd, XS_BUSY); } goto out; default: #ifdef NJSC32_DEBUG printf("%s: unexpected bus phase: ", sc->sc_dev.dv_xname); switch (bus_phase) { case NJSC32_PHASE_COMMAND: printf("Command\n"); break; case NJSC32_PHASE_MESSAGE_OUT: printf("Message Out\n");break; case NJSC32_PHASE_DATA_IN: printf("Data In\n"); break; case NJSC32_PHASE_DATA_OUT: printf("Data Out\n"); break; case NJSC32_PHASE_RESELECT: printf("Reselect\n");break; default: printf("%#x\n", bus_phase); break; } #else printf("%s: unexpected bus phase: %#x", sc->sc_dev.dv_xname, bus_phase); #endif break; } } if (intr & NJSC32_IRQ_AUTOSCSI) { /* * AutoSCSI interrupt */ auto_phase = njsc32_read_2(sc, NJSC32_REG_EXECUTE_PHASE); TPRINTF(("%s: njsc32_intr: AutoSCSI: %#x\n", sc->sc_dev.dv_xname, auto_phase)); njsc32_write_2(sc, NJSC32_REG_EXECUTE_PHASE, 0); if (auto_phase & NJSC32_XPHASE_SEL_TIMEOUT) { cmd = sc->sc_curcmd; if (cmd == NULL) { printf("%s: sel no cmd\n", sc->sc_dev.dv_xname); goto out; } DPRINTC(cmd, ("njsc32_intr: selection timeout\n")); sc->sc_curcmd = NULL; sc->sc_stat = NJSC32_STAT_IDLE; njsc32_end_cmd(sc, cmd, XS_SELTIMEOUT); goto out; } #ifdef NJSC32_TRACE if (auto_phase & NJSC32_XPHASE_COMMAND) { /* Command phase has been automatically processed */ TPRINTF(("%s: njsc32_intr: Command\n", sc->sc_dev.dv_xname)); } #endif #ifdef NJSC32_DEBUG if (auto_phase & NJSC32_XPHASE_ILLEGAL) { printf("%s: njsc32_intr: Illegal phase\n", sc->sc_dev.dv_xname); } #endif if (auto_phase & NJSC32_XPHASE_PAUSED_MSG_IN) { TPRINTF(("%s: njsc32_intr: Process Message In\n", sc->sc_dev.dv_xname)); njsc32_msgin(sc); } if (auto_phase & NJSC32_XPHASE_PAUSED_MSG_OUT) { TPRINTF(("%s: njsc32_intr: Process Message Out\n", sc->sc_dev.dv_xname)); njsc32_msgout(sc); } cmd = sc->sc_curcmd; if (cmd == NULL) { TPRINTF(("%s: njsc32_intr: no cmd\n", sc->sc_dev.dv_xname)); goto out; } if (auto_phase & (NJSC32_XPHASE_DATA_IN | NJSC32_XPHASE_DATA_OUT)) { u_int32_t sackcnt, cntoffset; #ifdef NJSC32_TRACE if (auto_phase & NJSC32_XPHASE_DATA_IN) PRINTC(cmd, ("njsc32_intr: data in done\n")); if (auto_phase & NJSC32_XPHASE_DATA_OUT) PRINTC(cmd, ("njsc32_intr: data out done\n")); printf("BM %u, SGT %u, SACK %u, SAVED_ACK %u\n", njsc32_read_4(sc, NJSC32_REG_BM_CNT), njsc32_read_4(sc, NJSC32_REG_SGT_ADR), njsc32_read_4(sc, NJSC32_REG_SACK_CNT), njsc32_read_4(sc, NJSC32_REG_SAVED_ACK_CNT)); #endif /* * detected parity error on data transfer? */ if (njsc32_read_1(sc, NJSC32_REG_PARITY_STATUS) & (NJSC32_PARITYSTATUS_ERROR_LSB| NJSC32_PARITYSTATUS_ERROR_MSB)) { PRINTC(cmd, ("datain: parity error\n")); /* clear parity error */ njsc32_write_1(sc, NJSC32_REG_PARITY_CONTROL, NJSC32_PARITYCTL_CHECK_ENABLE | NJSC32_PARITYCTL_CLEAR_ERROR); if (auto_phase & NJSC32_XPHASE_BUS_FREE) { /* * XXX command has already finished * -- what can we do? * * It is not clear current command * caused the error -- reset everything. */ njsc32_init(sc, 1); /* XXX */ } else { /* XXX does this case occur? */ #if 1 printf("%s: datain: parity error\n", sc->sc_dev.dv_xname); #endif /* * Make attention condition and try * to send Initiator Detected Error * message. */ njsc32_init_msgout(sc); njsc32_add_msgout(sc, MSG_INITIATOR_DET_ERR); njsc32_write_4(sc, NJSC32_REG_SCSI_MSG_OUT, njsc32_get_auto_msgout(sc)); /* restart autoscsi with ATN */ njsc32_write_2(sc, NJSC32_REG_COMMAND_CONTROL, NJSC32_CMD_CLEAR_CDB_FIFO_PTR | NJSC32_CMD_AUTO_COMMAND_PHASE | NJSC32_CMD_AUTO_SCSI_RESTART | NJSC32_CMD_AUTO_MSGIN_00_04 | NJSC32_CMD_AUTO_MSGIN_02 | NJSC32_CMD_AUTO_ATN); } goto out; } /* * data has been transferred, and current pointer * is changed */ sackcnt = njsc32_read_4(sc, NJSC32_REG_SACK_CNT); /* * The controller returns extra ACK count * if the DMA buffer is not 4byte aligned. */ cntoffset = le32toh(cmd->c_sgt[0].sg_addr) & 3; #ifdef NJSC32_DEBUG if (cntoffset != 0) { printf("sackcnt %u, cntoffset %u\n", sackcnt, cntoffset); } #endif /* advance SCSI pointer */ njsc32_set_cur_ptr(cmd, cmd->c_dp_cur + sackcnt - cntoffset); } if (auto_phase & NJSC32_XPHASE_MSGOUT) { /* Message Out phase has been automatically processed */ TPRINTC(cmd, ("njsc32_intr: Message Out\n")); if ((auto_phase & NJSC32_XPHASE_PAUSED_MSG_IN) == 0 && sc->sc_msgoutlen <= NJSC32_MSGOUT_MAX_AUTO) { njsc32_init_msgout(sc); } } if (auto_phase & NJSC32_XPHASE_STATUS) { /* Status phase has been automatically processed */ cmd->c_xs->status = njsc32_read_1(sc, NJSC32_REG_SCSI_CSB_IN); TPRINTC(cmd, ("njsc32_intr: Status %#x\n", cmd->c_xs->status)); } if (auto_phase & NJSC32_XPHASE_BUS_FREE) { /* AutoSCSI is finished */ TPRINTC(cmd, ("njsc32_intr: Bus Free\n")); sc->sc_stat = NJSC32_STAT_IDLE; sc->sc_curcmd = NULL; njsc32_end_auto(sc, cmd, auto_phase); } goto out; } if (intr & NJSC32_IRQ_FIFO_THRESHOLD) { /* XXX We use DMA, and this shouldn't happen */ printf("%s: njsc32_intr: FIFO\n", sc->sc_dev.dv_xname); njsc32_init(sc, 1); goto out; } if (intr & NJSC32_IRQ_PCI) { /* XXX? */ printf("%s: njsc32_intr: PCI\n", sc->sc_dev.dv_xname); } if (intr & NJSC32_IRQ_BMCNTERR) { /* XXX? */ printf("%s: njsc32_intr: BM\n", sc->sc_dev.dv_xname); } out: /* go next command if controller is idle */ if (sc->sc_stat == NJSC32_STAT_IDLE) njsc32_start(sc); #if 0 /* enable interrupts */ njsc32_write_2(sc, NJSC32_REG_IRQ, 0); #endif return 1; /* processed */ }