/* $NetBSD: esiop.c,v 1.6 2002/04/23 17:33:27 bouyer Exp $ */ /* * Copyright (c) 2002 Manuel Bouyer. * * 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 Manuel Bouyer * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 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. * */ /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ #include __KERNEL_RCSID(0, "$NetBSD: esiop.c,v 1.6 2002/04/23 17:33:27 bouyer Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "opt_siop.h" #ifndef DEBUG #undef DEBUG #endif #undef SIOP_DEBUG #undef SIOP_DEBUG_DR #undef SIOP_DEBUG_INTR #undef SIOP_DEBUG_SCHED #undef DUMP_SCRIPT #define SIOP_STATS #ifndef SIOP_DEFAULT_TARGET #define SIOP_DEFAULT_TARGET 7 #endif /* number of cmd descriptors per block */ #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct esiop_xfer)) void esiop_reset __P((struct esiop_softc *)); void esiop_checkdone __P((struct esiop_softc *)); void esiop_handle_reset __P((struct esiop_softc *)); void esiop_scsicmd_end __P((struct esiop_cmd *)); void esiop_unqueue __P((struct esiop_softc *, int, int)); int esiop_handle_qtag_reject __P((struct esiop_cmd *)); static void esiop_start __P((struct esiop_softc *, struct esiop_cmd *)); void esiop_timeout __P((void *)); int esiop_scsicmd __P((struct scsipi_xfer *)); void esiop_scsipi_request __P((struct scsipi_channel *, scsipi_adapter_req_t, void *)); void esiop_dump_script __P((struct esiop_softc *)); void esiop_morecbd __P((struct esiop_softc *)); void esiop_moretagtbl __P((struct esiop_softc *)); void siop_add_reselsw __P((struct esiop_softc *, int)); void esiop_update_scntl3 __P((struct esiop_softc *, struct siop_common_target *)); struct esiop_cmd * esiop_cmd_find __P((struct esiop_softc *, int, u_int32_t)); void esiop_target_register __P((struct esiop_softc *, u_int32_t)); static int nintr = 0; #ifdef SIOP_STATS static int esiop_stat_intr = 0; static int esiop_stat_intr_shortxfer = 0; static int esiop_stat_intr_sdp = 0; static int esiop_stat_intr_done = 0; static int esiop_stat_intr_xferdisc = 0; static int esiop_stat_intr_lunresel = 0; static int esiop_stat_intr_qfull = 0; void esiop_printstats __P((void)); #define INCSTAT(x) x++ #else #define INCSTAT(x) #endif static __inline__ void esiop_script_sync __P((struct esiop_softc *, int)); static __inline__ void esiop_script_sync(sc, ops) struct esiop_softc *sc; int ops; { if ((sc->sc_c.features & SF_CHIP_RAM) == 0) bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, PAGE_SIZE, ops); } static __inline__ u_int32_t esiop_script_read __P((struct esiop_softc *, u_int)); static __inline__ u_int32_t esiop_script_read(sc, offset) struct esiop_softc *sc; u_int offset; { if (sc->sc_c.features & SF_CHIP_RAM) { return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, offset * 4); } else { return le32toh(sc->sc_c.sc_script[offset]); } } static __inline__ void esiop_script_write __P((struct esiop_softc *, u_int, u_int32_t)); static __inline__ void esiop_script_write(sc, offset, val) struct esiop_softc *sc; u_int offset; u_int32_t val; { if (sc->sc_c.features & SF_CHIP_RAM) { bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, offset * 4, val); } else { sc->sc_c.sc_script[offset] = htole32(val); } } void esiop_attach(sc) struct esiop_softc *sc; { if (siop_common_attach(&sc->sc_c) != 0 ) return; TAILQ_INIT(&sc->free_list); TAILQ_INIT(&sc->cmds); TAILQ_INIT(&sc->free_tagtbl); TAILQ_INIT(&sc->tag_tblblk); sc->sc_currschedslot = 0; #ifdef SIOP_DEBUG printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n", sc->sc_c.sc_dev.dv_xname, (int)sizeof(esiop_script), (u_int32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); #endif sc->sc_c.sc_adapt.adapt_max_periph = ESIOP_NTAG; sc->sc_c.sc_adapt.adapt_request = esiop_scsipi_request; /* Do a bus reset, so that devices fall back to narrow/async */ siop_resetbus(&sc->sc_c); /* * siop_reset() will reset the chip, thus clearing pending interrupts */ esiop_reset(sc); #ifdef DUMP_SCRIPT esiop_dump_script(sc); #endif config_found((struct device*)sc, &sc->sc_c.sc_chan, scsiprint); } void esiop_reset(sc) struct esiop_softc *sc; { int i, j; u_int32_t addr; u_int32_t msgin_addr; siop_common_reset(&sc->sc_c); /* * we copy the script at the beggining of RAM. Then there is 8 bytes * for messages in. */ sc->sc_free_offset = sizeof(esiop_script) / sizeof(esiop_script[0]); msgin_addr = sc->sc_free_offset * sizeof(u_int32_t) + sc->sc_c.sc_scriptaddr; sc->sc_free_offset += 2; /* then we have the scheduler ring */ sc->sc_shedoffset = sc->sc_free_offset; sc->sc_free_offset += A_ncmd_slots * 2; /* then the targets DSA table */ sc->sc_target_table_offset = sc->sc_free_offset; sc->sc_free_offset += sc->sc_c.sc_chan.chan_ntargets; /* copy and patch the script */ if (sc->sc_c.features & SF_CHIP_RAM) { bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, esiop_script, sizeof(esiop_script) / sizeof(esiop_script[0])); for (j = 0; j < (sizeof(E_tlq_offset_Used) / sizeof(E_tlq_offset_Used[0])); j++) { bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, E_tlq_offset_Used[j] * 4, sizeof(struct siop_common_xfer)); } for (j = 0; j < (sizeof(E_abs_msgin2_Used) / sizeof(E_abs_msgin2_Used[0])); j++) { bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, E_abs_msgin2_Used[j] * 4, msgin_addr); } if (sc->sc_c.features & SF_CHIP_LED0) { bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, Ent_led_on1, esiop_led_on, sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, Ent_led_on2, esiop_led_on, sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, Ent_led_off, esiop_led_off, sizeof(esiop_led_off) / sizeof(esiop_led_off[0])); } } else { for (j = 0; j < (sizeof(esiop_script) / sizeof(esiop_script[0])); j++) { sc->sc_c.sc_script[j] = htole32(esiop_script[j]); } for (j = 0; j < (sizeof(E_tlq_offset_Used) / sizeof(E_tlq_offset_Used[0])); j++) { sc->sc_c.sc_script[E_tlq_offset_Used[j]] = htole32(sizeof(struct siop_common_xfer)); } for (j = 0; j < (sizeof(E_abs_msgin2_Used) / sizeof(E_abs_msgin2_Used[0])); j++) { sc->sc_c.sc_script[E_abs_msgin2_Used[j]] = htole32(msgin_addr); } if (sc->sc_c.features & SF_CHIP_LED0) { for (j = 0; j < (sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); j++) sc->sc_c.sc_script[ Ent_led_on1 / sizeof(esiop_led_on[0]) + j ] = htole32(esiop_led_on[j]); for (j = 0; j < (sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); j++) sc->sc_c.sc_script[ Ent_led_on2 / sizeof(esiop_led_on[0]) + j ] = htole32(esiop_led_on[j]); for (j = 0; j < (sizeof(esiop_led_off) / sizeof(esiop_led_off[0])); j++) sc->sc_c.sc_script[ Ent_led_off / sizeof(esiop_led_off[0]) + j ] = htole32(esiop_led_off[j]); } } /* get base of scheduler ring */ addr = sc->sc_c.sc_scriptaddr + sc->sc_shedoffset * sizeof(u_int32_t); /* init scheduler */ for (i = 0; i < A_ncmd_slots; i++) { esiop_script_write(sc, sc->sc_shedoffset + i * 2, A_f_cmd_free); esiop_script_write(sc, sc->sc_shedoffset + i * 2 + 1, 0); } sc->sc_currschedslot = 0; bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHD, addr); /* * 0x78000000 is a 'move data8 to reg'. data8 is the second * octet, reg offset is the third. */ esiop_script_write(sc, Ent_cmdr0 / 4, 0x78640000 | ((addr & 0x000000ff) << 8)); esiop_script_write(sc, Ent_cmdr1 / 4, 0x78650000 | ((addr & 0x0000ff00) )); esiop_script_write(sc, Ent_cmdr2 / 4, 0x78660000 | ((addr & 0x00ff0000) >> 8)); esiop_script_write(sc, Ent_cmdr3 / 4, 0x78670000 | ((addr & 0xff000000) >> 16)); /* set flags */ bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC, 0); /* write pointer of base of target DSA table */ addr = (sc->sc_target_table_offset * sizeof(u_int32_t)) + sc->sc_c.sc_scriptaddr; esiop_script_write(sc, (Ent_load_targtable / 4) + 0, esiop_script_read(sc,(Ent_load_targtable / 4) + 0) | ((addr & 0x000000ff) << 8)); esiop_script_write(sc, (Ent_load_targtable / 4) + 2, esiop_script_read(sc,(Ent_load_targtable / 4) + 2) | ((addr & 0x0000ff00) )); esiop_script_write(sc, (Ent_load_targtable / 4) + 4, esiop_script_read(sc,(Ent_load_targtable / 4) + 4) | ((addr & 0x00ff0000) >> 8)); esiop_script_write(sc, (Ent_load_targtable / 4) + 6, esiop_script_read(sc,(Ent_load_targtable / 4) + 6) | ((addr & 0xff000000) >> 16)); #ifdef SIOP_DEBUG printf("%s: target table offset %d free offset %d\n", sc->sc_c.sc_dev.dv_xname, sc->sc_target_table_offset, sc->sc_free_offset); #endif /* register existing targets */ for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { if (sc->sc_c.targets[i]) esiop_target_register(sc, i); } /* start script */ if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + Ent_reselect); } #if 0 #define CALL_SCRIPT(ent) do {\ printf ("start script DSA 0x%lx DSP 0x%lx\n", \ esiop_cmd->cmd_c.dsa, \ sc->sc_c.sc_scriptaddr + ent); \ bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ } while (0) #else #define CALL_SCRIPT(ent) do {\ bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ } while (0) #endif int esiop_intr(v) void *v; { struct esiop_softc *sc = v; struct esiop_target *esiop_target; struct esiop_cmd *esiop_cmd; struct esiop_lun *esiop_lun; struct scsipi_xfer *xs; int istat, sist, sstat1, dstat; u_int32_t irqcode; int need_reset = 0; int offset, target, lun, tag; u_int32_t tflags; u_int32_t addr; int freetarget = 0; int restart = 0; int slot; int retval = 0; again: istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) { if (istat & ISTAT_SEM) { bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT, (istat & ~ISTAT_SEM)); esiop_checkdone(sc); } return retval; } retval = 1; nintr++; if (nintr > 100) { panic("esiop: intr loop"); } INCSTAT(esiop_stat_intr); if (istat & ISTAT_INTF) { bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT, ISTAT_INTF); esiop_checkdone(sc); goto again; } /* get CMD from T/L/Q */ tflags = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC); #ifdef SIOP_DEBUG_INTR printf("interrupt, istat=0x%x tflags=0x%x " "DSA=0x%x DSP=0x%lx\n", istat, tflags, bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); #endif target = (tflags & A_f_c_target) ? ((tflags >> 8) & 0xff) : -1; if (target > sc->sc_c.sc_chan.chan_ntargets) target = -1; lun = (tflags & A_f_c_lun) ? ((tflags >> 16) & 0xff) : -1; if (lun > sc->sc_c.sc_chan.chan_nluns) lun = -1; tag = (tflags & A_f_c_tag) ? ((tflags >> 24) & 0xff) : -1; if (target >= 0 && lun >= 0) { esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; if (esiop_target == NULL) { printf("esiop_target (target %d) not valid\n", target); goto none; } esiop_lun = esiop_target->esiop_lun[lun]; if (esiop_lun == NULL) { printf("esiop_lun (target %d lun %d) not valid\n", target, lun); goto none; } esiop_cmd = (tag >= 0) ? esiop_lun->tactive[tag] : esiop_lun->active; if (esiop_cmd == NULL) { printf("esiop_cmd (target %d lun %d tag %d) not valid\n", target, lun, tag); goto none; } xs = esiop_cmd->cmd_c.xs; #ifdef DIAGNOSTIC if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { printf("esiop_cmd (target %d lun %d) " "not active (%d)\n", target, lun, esiop_cmd->cmd_c.status); goto none; } #endif esiop_table_sync(esiop_cmd, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); } else { none: xs = NULL; esiop_target = NULL; esiop_lun = NULL; esiop_cmd = NULL; } if (istat & ISTAT_DIP) { dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSTAT); if (dstat & DSTAT_SSI) { printf("single step dsp 0x%08x dsa 0x08%x\n", (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr), bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && (istat & ISTAT_SIP) == 0) { bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DCNTL, bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); } return 1; } if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { printf("%s: DMA IRQ:", sc->sc_c.sc_dev.dv_xname); if (dstat & DSTAT_IID) printf(" Illegal instruction"); if (dstat & DSTAT_ABRT) printf(" abort"); if (dstat & DSTAT_BF) printf(" bus fault"); if (dstat & DSTAT_MDPE) printf(" parity"); if (dstat & DSTAT_DFE) printf(" dma fifo empty"); printf(", DSP=0x%x DSA=0x%x: ", (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr), bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); if (esiop_cmd) printf("last msg_in=0x%x status=0x%x\n", esiop_cmd->cmd_tables->msg_in[0], le32toh(esiop_cmd->cmd_tables->status)); else printf(" current T/L/Q invalid\n"); need_reset = 1; } } if (istat & ISTAT_SIP) { if (istat & ISTAT_DIP) delay(10); /* * Can't read sist0 & sist1 independantly, or we have to * insert delay */ sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SIST0); sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SSTAT1); #ifdef SIOP_DEBUG_INTR printf("scsi interrupt, sist=0x%x sstat1=0x%x " "DSA=0x%x DSP=0x%lx\n", sist, sstat1, bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); #endif if (sist & SIST0_RST) { esiop_handle_reset(sc); /* no table to flush here */ return 1; } if (sist & SIST0_SGE) { if (esiop_cmd) scsipi_printaddr(xs->xs_periph); else printf("%s:", sc->sc_c.sc_dev.dv_xname); printf("scsi gross error\n"); if (esiop_target) esiop_target->target_c.flags &= ~TARF_DT; goto reset; } if ((sist & SIST0_MA) && need_reset == 0) { if (esiop_cmd) { int scratchc0; dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSTAT); /* * first restore DSA, in case we were in a S/G * operation. */ bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA, esiop_cmd->cmd_c.dsa); scratchc0 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC); switch (sstat1 & SSTAT1_PHASE_MASK) { case SSTAT1_PHASE_STATUS: /* * previous phase may be aborted for any reason * ( for example, the target has less data to * transfer than requested). Just go to status * and the command should terminate. */ INCSTAT(esiop_stat_intr_shortxfer); if ((dstat & DSTAT_DFE) == 0) siop_clearfifo(&sc->sc_c); /* no table to flush here */ CALL_SCRIPT(Ent_status); return 1; case SSTAT1_PHASE_MSGIN: /* * target may be ready to disconnect * Save data pointers just in case. */ INCSTAT(esiop_stat_intr_xferdisc); if (scratchc0 & A_f_c_data) siop_sdp(&esiop_cmd->cmd_c); else if ((dstat & DSTAT_DFE) == 0) siop_clearfifo(&sc->sc_c); bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC, scratchc0 & ~A_f_c_data); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_msgin); return 1; } printf("%s: unexpected phase mismatch %d\n", sc->sc_c.sc_dev.dv_xname, sstat1 & SSTAT1_PHASE_MASK); } else { printf("%s: phase mismatch without command\n", sc->sc_c.sc_dev.dv_xname); } need_reset = 1; } if (sist & SIST0_PAR) { /* parity error, reset */ if (esiop_cmd) scsipi_printaddr(xs->xs_periph); else printf("%s:", sc->sc_c.sc_dev.dv_xname); printf("parity error\n"); if (esiop_target) esiop_target->target_c.flags &= ~TARF_DT; goto reset; } if ((sist & (SIST1_STO << 8)) && need_reset == 0) { /* selection time out, assume there's no device here */ /* * SCRATCHC has not been loaded yet, we have to find * params by ourselve. scratchE0 should point to * the slot. */ slot = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE); esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); target = esiop_script_read(sc, sc->sc_shedoffset + slot * 2 + 1) & 0x00ff0000; target = (target >> 16) & 0xff; esiop_cmd = esiop_cmd_find(sc, target, esiop_script_read(sc, sc->sc_shedoffset + slot * 2) & ~0x3); /* * mark this slot as free, and advance to next slot */ esiop_script_write(sc, sc->sc_shedoffset + slot * 2, A_f_cmd_free); addr = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHD); if (slot < (A_ncmd_slots - 1)) { bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE, slot + 1); addr = addr + 8; } else { bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); addr = sc->sc_c.sc_scriptaddr + sc->sc_shedoffset * sizeof(u_int32_t); } bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHD, addr); esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); if (esiop_cmd) { xs = esiop_cmd->cmd_c.xs; esiop_target = (struct esiop_target *) esiop_cmd->cmd_c.siop_target; lun = xs->xs_periph->periph_lun; tag = esiop_cmd->cmd_c.tag; esiop_lun = esiop_target->esiop_lun[lun]; esiop_cmd->cmd_c.status = CMDST_DONE; xs->error = XS_SELTIMEOUT; freetarget = 1; goto end; } else { printf("%s: selection timeout without " "command, target %d (sdid 0x%x), " "slot %d\n", sc->sc_c.sc_dev.dv_xname, target, bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SDID), slot); need_reset = 1; } } if (sist & SIST0_UDC) { /* * unexpected disconnect. Usually the target signals * a fatal condition this way. Attempt to get sense. */ if (esiop_cmd) { esiop_cmd->cmd_tables->status = htole32(SCSI_CHECK); goto end; } printf("%s: unexpected disconnect without " "command\n", sc->sc_c.sc_dev.dv_xname); goto reset; } if (sist & (SIST1_SBMC << 8)) { /* SCSI bus mode change */ if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) goto reset; if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* * we have a script interrupt, it will * restart the script. */ goto scintr; } /* * else we have to restart it ourselve, at the * interrupted instruction. */ bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - 8); return 1; } /* Else it's an unhandled exeption (for now). */ printf("%s: unhandled scsi interrupt, sist=0x%x sstat1=0x%x " "DSA=0x%x DSP=0x%x\n", sc->sc_c.sc_dev.dv_xname, sist, bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SSTAT1), bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); if (esiop_cmd) { esiop_cmd->cmd_c.status = CMDST_DONE; xs->error = XS_SELTIMEOUT; goto end; } need_reset = 1; } if (need_reset) { reset: /* fatal error, reset the bus */ siop_resetbus(&sc->sc_c); /* no table to flush here */ return 1; } scintr: if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSPS); #ifdef SIOP_DEBUG_INTR printf("script interrupt 0x%x\n", irqcode); #endif /* * no command, or an inactive command is only valid for a * reselect interrupt */ if ((irqcode & 0x80) == 0) { if (esiop_cmd == NULL) { printf( "%s: script interrupt (0x%x) with invalid DSA !!!\n", sc->sc_c.sc_dev.dv_xname, irqcode); goto reset; } if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { printf("%s: command with invalid status " "(IRQ code 0x%x current status %d) !\n", sc->sc_c.sc_dev.dv_xname, irqcode, esiop_cmd->cmd_c.status); xs = NULL; } } switch(irqcode) { case A_int_err: printf("error, DSP=0x%x\n", (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); if (xs) { xs->error = XS_SELTIMEOUT; goto end; } else { goto reset; } case A_int_msgin: { int msgin = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SFBR); if (msgin == MSG_MESSAGE_REJECT) { int msg, extmsg; if (esiop_cmd->cmd_tables->msg_out[0] & 0x80) { /* * message was part of a identify + * something else. Identify shoudl't * have been rejected. */ msg = esiop_cmd->cmd_tables->msg_out[1]; extmsg = esiop_cmd->cmd_tables->msg_out[3]; } else { msg = esiop_cmd->cmd_tables->msg_out[0]; extmsg = esiop_cmd->cmd_tables->msg_out[2]; } if (msg == MSG_MESSAGE_REJECT) { /* MSG_REJECT for a MSG_REJECT !*/ if (xs) scsipi_printaddr(xs->xs_periph); else printf("%s: ", sc->sc_c.sc_dev.dv_xname); printf("our reject message was " "rejected\n"); goto reset; } if (msg == MSG_EXTENDED && extmsg == MSG_EXT_WDTR) { /* WDTR rejected, initiate sync */ if ((esiop_target->target_c.flags & TARF_SYNC) == 0) { esiop_target->target_c.status = TARST_OK; siop_update_xfer_mode(&sc->sc_c, target); /* no table to flush here */ CALL_SCRIPT(Ent_msgin_ack); return 1; } esiop_target->target_c.status = TARST_SYNC_NEG; siop_sdtr_msg(&esiop_cmd->cmd_c, 0, sc->sc_c.st_minsync, sc->sc_c.maxoff); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return 1; } else if (msg == MSG_EXTENDED && extmsg == MSG_EXT_SDTR) { /* sync rejected */ esiop_target->target_c.offset = 0; esiop_target->target_c.period = 0; esiop_target->target_c.status = TARST_OK; siop_update_xfer_mode(&sc->sc_c, target); /* no table to flush here */ CALL_SCRIPT(Ent_msgin_ack); return 1; } else if (msg == MSG_EXTENDED && extmsg == MSG_EXT_PPR) { /* PPR rejected */ esiop_target->target_c.offset = 0; esiop_target->target_c.period = 0; esiop_target->target_c.status = TARST_OK; siop_update_xfer_mode(&sc->sc_c, target); /* no table to flush here */ CALL_SCRIPT(Ent_msgin_ack); return 1; } else if (msg == MSG_SIMPLE_Q_TAG || msg == MSG_HEAD_OF_Q_TAG || msg == MSG_ORDERED_Q_TAG) { if (esiop_handle_qtag_reject( esiop_cmd) == -1) goto reset; CALL_SCRIPT(Ent_msgin_ack); return 1; } if (xs) scsipi_printaddr(xs->xs_periph); else printf("%s: ", sc->sc_c.sc_dev.dv_xname); if (msg == MSG_EXTENDED) { printf("scsi message reject, extended " "message sent was 0x%x\n", extmsg); } else { printf("scsi message reject, message " "sent was 0x%x\n", msg); } /* no table to flush here */ CALL_SCRIPT(Ent_msgin_ack); return 1; } if (xs) scsipi_printaddr(xs->xs_periph); else printf("%s: ", sc->sc_c.sc_dev.dv_xname); printf("unhandled message 0x%x\n", esiop_cmd->cmd_tables->msg_in[0]); esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; esiop_cmd->cmd_tables->t_msgout.count= htole32(1); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return 1; } case A_int_extmsgin: #ifdef SIOP_DEBUG_INTR printf("extended message: msg 0x%x len %d\n", esiop_cmd->cmd_tables->msg_in[2], esiop_cmd->cmd_tables->msg_in[1]); #endif if (esiop_cmd->cmd_tables->msg_in[1] > sizeof(esiop_cmd->cmd_tables->msg_in) - 2) printf("%s: extended message too big (%d)\n", sc->sc_c.sc_dev.dv_xname, esiop_cmd->cmd_tables->msg_in[1]); esiop_cmd->cmd_tables->t_extmsgdata.count = htole32(esiop_cmd->cmd_tables->msg_in[1] - 1); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_get_extmsgdata); return 1; case A_int_extmsgdata: #ifdef SIOP_DEBUG_INTR { int i; printf("extended message: 0x%x, data:", esiop_cmd->cmd_tables->msg_in[2]); for (i = 3; i < 2 + esiop_cmd->cmd_tables->msg_in[1]; i++) printf(" 0x%x", esiop_cmd->cmd_tables->msg_in[i]); printf("\n"); } #endif if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_PPR) { switch (siop_ppr_neg(&esiop_cmd->cmd_c)) { case SIOP_NEG_MSGOUT: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return(1); case SIOP_NEG_ACK: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); CALL_SCRIPT(Ent_msgin_ack); return(1); default: panic("invalid retval from " "siop_wdtr_neg()"); } return(1); } if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { switch (siop_wdtr_neg(&esiop_cmd->cmd_c)) { case SIOP_NEG_MSGOUT: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return(1); case SIOP_NEG_ACK: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); CALL_SCRIPT(Ent_msgin_ack); return(1); default: panic("invalid retval from " "siop_wdtr_neg()"); } return(1); } if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { switch (siop_sdtr_neg(&esiop_cmd->cmd_c)) { case SIOP_NEG_MSGOUT: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return(1); case SIOP_NEG_ACK: esiop_update_scntl3(sc, esiop_cmd->cmd_c.siop_target); CALL_SCRIPT(Ent_msgin_ack); return(1); default: panic("invalid retval from " "siop_wdtr_neg()"); } return(1); } /* send a message reject */ esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; esiop_cmd->cmd_tables->t_msgout.count = htole32(1); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); CALL_SCRIPT(Ent_send_msgout); return 1; case A_int_disc: INCSTAT(esiop_stat_intr_sdp); offset = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); #ifdef SIOP_DEBUG_DR printf("disconnect offset %d\n", offset); #endif if (offset > SIOP_NSG) { printf("%s: bad offset for disconnect (%d)\n", sc->sc_c.sc_dev.dv_xname, offset); goto reset; } /* * offset == SIOP_NSG may be a valid condition if * we get a sdp when the xfer is done. * Don't call memmove in this case. */ if (offset < SIOP_NSG) { memmove(&esiop_cmd->cmd_tables->data[0], &esiop_cmd->cmd_tables->data[offset], (SIOP_NSG - offset) * sizeof(scr_table_t)); esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } CALL_SCRIPT(Ent_script_sched); return 1; case A_int_resfail: printf("reselect failed\n"); CALL_SCRIPT(Ent_script_sched); return 1; case A_int_done: if (xs == NULL) { printf("%s: done without command\n", sc->sc_c.sc_dev.dv_xname); CALL_SCRIPT(Ent_script_sched); return 1; } #ifdef SIOP_DEBUG_INTR printf("done, DSA=0x%lx target id 0x%x last msg " "in=0x%x status=0x%x\n", (u_long)esiop_cmd->cmd_c.dsa, le32toh(esiop_cmd->cmd_tables->id), esiop_cmd->cmd_tables->msg_in[0], le32toh(esiop_cmd->cmd_tables->status)); #endif INCSTAT(esiop_stat_intr_done); esiop_cmd->cmd_c.status = CMDST_DONE; goto end; default: printf("unknown irqcode %x\n", irqcode); if (xs) { xs->error = XS_SELTIMEOUT; goto end; } goto reset; } return 1; } /* We just should't get there */ panic("siop_intr: I shouldn't be there !"); end: /* * restart the script now if command completed properly * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the * queue */ xs->status = le32toh(esiop_cmd->cmd_tables->status); #ifdef SIOP_DEBUG_INTR printf("esiop_intr end: status %d\n", xs->status); #endif if (xs->status == SCSI_OK) CALL_SCRIPT(Ent_script_sched); else restart = 1; if (tag >= 0) esiop_lun->tactive[tag] = NULL; else esiop_lun->active = NULL; esiop_scsicmd_end(esiop_cmd); if (freetarget && esiop_target->target_c.status == TARST_PROBING) esiop_del_dev(sc, target, lun); if (restart) CALL_SCRIPT(Ent_script_sched); if (sc->sc_flags & SCF_CHAN_NOSLOT) { /* a command terminated, so we have free slots now */ sc->sc_flags &= ~SCF_CHAN_NOSLOT; scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); } return retval; } void esiop_scsicmd_end(esiop_cmd) struct esiop_cmd *esiop_cmd; { struct scsipi_xfer *xs = esiop_cmd->cmd_c.xs; struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; switch(xs->status) { case SCSI_OK: xs->error = XS_NOERROR; break; case SCSI_BUSY: xs->error = XS_BUSY; break; case SCSI_CHECK: xs->error = XS_BUSY; /* remove commands in the queue and scheduler */ esiop_unqueue(sc, xs->xs_periph->periph_target, xs->xs_periph->periph_lun); break; case SCSI_QUEUE_FULL: INCSTAT(esiop_stat_intr_qfull); #ifdef SIOP_DEBUG printf("%s:%d:%d: queue full (tag %d)\n", sc->sc_c.sc_dev.dv_xname, xs->xs_periph->periph_target, xs->xs_periph->periph_lun, esiop_cmd->cmd_c.tag); #endif xs->error = XS_BUSY; break; case SCSI_SIOP_NOCHECK: /* * don't check status, xs->error is already valid */ break; case SCSI_SIOP_NOSTATUS: /* * the status byte was not updated, cmd was * aborted */ xs->error = XS_SELTIMEOUT; break; default: xs->error = XS_DRIVER_STUFFUP; } if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_data, 0, esiop_cmd->cmd_c.dmamap_data->dm_mapsize, (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_data); } bus_dmamap_unload(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd); callout_stop(&esiop_cmd->cmd_c.xs->xs_callout); esiop_cmd->cmd_c.status = CMDST_FREE; TAILQ_INSERT_TAIL(&sc->free_list, esiop_cmd, next); xs->resid = 0; scsipi_done (xs); } void esiop_checkdone(sc) struct esiop_softc *sc; { int target, lun, tag; struct esiop_target *esiop_target; struct esiop_lun *esiop_lun; struct esiop_cmd *esiop_cmd; int status; for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; target++) { esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; if (esiop_target == NULL) continue; for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { esiop_lun = esiop_target->esiop_lun[lun]; if (esiop_lun == NULL) continue; esiop_cmd = esiop_lun->active; if (esiop_cmd) { esiop_table_sync(esiop_cmd, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); status = le32toh(esiop_cmd->cmd_tables->status); if (status == SCSI_OK) { /* Ok, this command has been handled */ esiop_cmd->cmd_c.xs->status = status; esiop_lun->active = NULL; esiop_scsicmd_end(esiop_cmd); } } for (tag = 0; tag < ESIOP_NTAG; tag++) { esiop_cmd = esiop_lun->tactive[tag]; if (esiop_cmd == NULL) continue; esiop_table_sync(esiop_cmd, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); status = le32toh(esiop_cmd->cmd_tables->status); if (status == SCSI_OK) { /* Ok, this command has been handled */ esiop_cmd->cmd_c.xs->status = status; esiop_lun->tactive[tag] = NULL; esiop_scsicmd_end(esiop_cmd); } } } } } void esiop_unqueue(sc, target, lun) struct esiop_softc *sc; int target; int lun; { int slot, tag; u_int32_t slotdsa; struct esiop_cmd *esiop_cmd; struct esiop_lun *esiop_lun = ((struct esiop_target *)sc->sc_c.targets[target])->esiop_lun[lun]; /* first make sure to read valid data */ esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); for (tag = 0; tag < ESIOP_NTAG; tag++) { /* look for commands in the scheduler, not yet started */ if (esiop_lun->tactive[tag] == NULL) continue; esiop_cmd = esiop_lun->tactive[tag]; for (slot = 0; slot < A_ncmd_slots; slot++) { slotdsa = esiop_script_read(sc, sc->sc_shedoffset + slot * 2); if (slotdsa & A_f_cmd_free) continue; if ((slotdsa & ~A_f_cmd_free) == esiop_cmd->cmd_c.dsa) break; } if (slot > ESIOP_NTAG) continue; /* didn't find it */ /* Mark this slot as ignore */ esiop_script_write(sc, sc->sc_shedoffset + slot * 2, esiop_cmd->cmd_c.dsa | A_f_cmd_ignore); /* ask to requeue */ esiop_cmd->cmd_c.xs->error = XS_REQUEUE; esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; esiop_lun->tactive[tag] = NULL; esiop_scsicmd_end(esiop_cmd); } } /* * handle a rejected queue tag message: the command will run untagged, * has to adjust the reselect script. */ int esiop_handle_qtag_reject(esiop_cmd) struct esiop_cmd *esiop_cmd; { struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; int target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; int lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; int tag = esiop_cmd->cmd_tables->msg_out[2]; struct esiop_target *esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; #ifdef SIOP_DEBUG printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", sc->sc_c.sc_dev.dv_xname, target, lun, tag, esiop_cmd->cmd_c.tag, esiop_cmd->cmd_c.status); #endif if (esiop_lun->active != NULL) { printf("%s: untagged command already running for target %d " "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, target, lun, esiop_lun->active->cmd_c.status); return -1; } /* clear tag slot */ esiop_lun->tactive[tag] = NULL; /* add command to non-tagged slot */ esiop_lun->active = esiop_cmd; esiop_cmd->cmd_c.flags &= ~CMDFL_TAG; esiop_cmd->cmd_c.tag = -1; /* update DSA table */ esiop_script_write(sc, esiop_target->lun_table_offset + lun + 2, esiop_cmd->cmd_c.dsa); esiop_lun->lun_flags &= ~LUNF_TAGTABLE; esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return 0; } /* * handle a bus reset: reset chip, unqueue all active commands, free all * target struct and report loosage to upper layer. * As the upper layer may requeue immediatly we have to first store * all active commands in a temporary queue. */ void esiop_handle_reset(sc) struct esiop_softc *sc; { struct esiop_cmd *esiop_cmd; struct esiop_lun *esiop_lun; int target, lun, tag; /* * scsi bus reset. reset the chip and restart * the queue. Need to clean up all active commands */ printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); /* stop, reset and restart the chip */ esiop_reset(sc); if (sc->sc_flags & SCF_CHAN_NOSLOT) { /* chip has been reset, all slots are free now */ sc->sc_flags &= ~SCF_CHAN_NOSLOT; scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); } /* * Process all commands: first commmands completes, then commands * being executed */ esiop_checkdone(sc); for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; target++) { struct esiop_target *esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; if (esiop_target == NULL) continue; for (lun = 0; lun < 8; lun++) { esiop_lun = esiop_target->esiop_lun[lun]; if (esiop_lun == NULL) continue; for (tag = -1; tag < ((sc->sc_c.targets[target]->flags & TARF_TAG) ? ESIOP_NTAG : 0); tag++) { if (tag >= 0) esiop_cmd = esiop_lun->tactive[tag]; else esiop_cmd = esiop_lun->active; if (esiop_cmd == NULL) continue; scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); printf("command with tag id %d reset\n", tag); esiop_cmd->cmd_c.xs->error = (esiop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? XS_TIMEOUT : XS_RESET; esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; if (tag >= 0) esiop_lun->tactive[tag] = NULL; else esiop_lun->active = NULL; esiop_cmd->cmd_c.status = CMDST_DONE; esiop_scsicmd_end(esiop_cmd); } } sc->sc_c.targets[target]->status = TARST_ASYNC; sc->sc_c.targets[target]->flags &= ~(TARF_ISWIDE | TARF_ISDT); sc->sc_c.targets[target]->period = sc->sc_c.targets[target]->offset = 0; siop_update_xfer_mode(&sc->sc_c, target); } scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); } void esiop_scsipi_request(chan, req, arg) struct scsipi_channel *chan; scsipi_adapter_req_t req; void *arg; { struct scsipi_xfer *xs; struct scsipi_periph *periph; struct esiop_softc *sc = (void *)chan->chan_adapter->adapt_dev; struct esiop_cmd *esiop_cmd; struct esiop_target *esiop_target; int s, error, i; int target; int lun; switch (req) { case ADAPTER_REQ_RUN_XFER: xs = arg; periph = xs->xs_periph; target = periph->periph_target; lun = periph->periph_lun; s = splbio(); #ifdef SIOP_DEBUG_SCHED printf("starting cmd for %d:%d\n", target, lun); #endif esiop_cmd = TAILQ_FIRST(&sc->free_list); if (esiop_cmd == NULL) { xs->error = XS_RESOURCE_SHORTAGE; scsipi_done(xs); splx(s); return; } TAILQ_REMOVE(&sc->free_list, esiop_cmd, next); #ifdef DIAGNOSTIC if (esiop_cmd->cmd_c.status != CMDST_FREE) panic("siop_scsicmd: new cmd not free"); #endif esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; if (esiop_target == NULL) { #ifdef SIOP_DEBUG printf("%s: alloc siop_target for target %d\n", sc->sc_c.sc_dev.dv_xname, target); #endif sc->sc_c.targets[target] = malloc(sizeof(struct esiop_target), M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->sc_c.targets[target] == NULL) { printf("%s: can't malloc memory for " "target %d\n", sc->sc_c.sc_dev.dv_xname, target); xs->error = XS_RESOURCE_SHORTAGE; scsipi_done(xs); splx(s); return; } esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; esiop_target->target_c.status = TARST_PROBING; esiop_target->target_c.flags = 0; esiop_target->target_c.id = sc->sc_c.clock_div << 24; /* scntl3 */ esiop_target->target_c.id |= target << 16; /* id */ /* esiop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ for (i=0; i < 8; i++) esiop_target->esiop_lun[i] = NULL; esiop_target_register(sc, target); } if (esiop_target->esiop_lun[lun] == NULL) { esiop_target->esiop_lun[lun] = malloc(sizeof(struct esiop_lun), M_DEVBUF, M_NOWAIT|M_ZERO); if (esiop_target->esiop_lun[lun] == NULL) { printf("%s: can't alloc esiop_lun for " "target %d lun %d\n", sc->sc_c.sc_dev.dv_xname, target, lun); xs->error = XS_RESOURCE_SHORTAGE; scsipi_done(xs); splx(s); return; } } esiop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; esiop_cmd->cmd_c.xs = xs; esiop_cmd->cmd_c.flags = 0; esiop_cmd->cmd_c.status = CMDST_READY; /* load the DMA maps */ error = bus_dmamap_load(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd, xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to load cmd DMA map: %d\n", sc->sc_c.sc_dev.dv_xname, error); xs->error = XS_DRIVER_STUFFUP; scsipi_done(xs); splx(s); return; } if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { error = bus_dmamap_load(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | ((xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); if (error) { printf("%s: unable to load cmd DMA map: %d", sc->sc_c.sc_dev.dv_xname, error); xs->error = XS_DRIVER_STUFFUP; scsipi_done(xs); bus_dmamap_unload(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd); splx(s); return; } bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_data, 0, esiop_cmd->cmd_c.dmamap_data->dm_mapsize, (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); } bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd, 0, esiop_cmd->cmd_c.dmamap_cmd->dm_mapsize, BUS_DMASYNC_PREWRITE); if (xs->xs_tag_type) esiop_cmd->cmd_c.tag = xs->xs_tag_id; else esiop_cmd->cmd_c.tag = -1; siop_setuptables(&esiop_cmd->cmd_c); ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq = htole32(A_f_c_target | A_f_c_lun); ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= htole32((target << 8) | (lun << 16)); if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= htole32(A_f_c_tag); ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= htole32(esiop_cmd->cmd_c.tag << 24); } esiop_table_sync(esiop_cmd, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); esiop_start(sc, esiop_cmd); if (xs->xs_control & XS_CTL_POLL) { /* poll for command completion */ while ((xs->xs_status & XS_STS_DONE) == 0) { delay(1000); esiop_intr(sc); } } splx(s); return; case ADAPTER_REQ_GROW_RESOURCES: #ifdef SIOP_DEBUG printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, sc->sc_c.sc_adapt.adapt_openings); #endif esiop_morecbd(sc); return; case ADAPTER_REQ_SET_XFER_MODE: { struct scsipi_xfer_mode *xm = arg; if (sc->sc_c.targets[xm->xm_target] == NULL) return; s = splbio(); if (xm->xm_mode & PERIPH_CAP_TQING) sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; if ((xm->xm_mode & PERIPH_CAP_WIDE16) && (sc->sc_c.features & SF_BUS_WIDE)) sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; if (xm->xm_mode & PERIPH_CAP_SYNC) sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; if ((xm->xm_mode & PERIPH_CAP_DT) && (sc->sc_c.features & SF_CHIP_DT)) sc->sc_c.targets[xm->xm_target]->flags |= TARF_DT; if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) || sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) sc->sc_c.targets[xm->xm_target]->status = TARST_ASYNC; for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { if (sc->sc_c.sc_chan.chan_periphs[xm->xm_target][lun]) /* allocate a lun sw entry for this device */ esiop_add_dev(sc, xm->xm_target, lun); } splx(s); } } } static void esiop_start(sc, esiop_cmd) struct esiop_softc *sc; struct esiop_cmd *esiop_cmd; { struct esiop_lun *esiop_lun; struct esiop_target *esiop_target; int timeout; int target, lun, slot; nintr = 0; /* * first make sure to read valid data */ esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); /* * We use a circular queue here. sc->sc_currschedslot points to a * free slot, unless we have filled the queue. Check this. */ slot = sc->sc_currschedslot; if ((esiop_script_read(sc, sc->sc_shedoffset + slot * 2) & A_f_cmd_free) == 0) { /* * no more free slot, no need to continue. freeze the queue * and requeue this command. */ scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); sc->sc_flags |= SCF_CHAN_NOSLOT; esiop_cmd->cmd_c.xs->error = XS_REQUEUE; esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; esiop_scsicmd_end(esiop_cmd); return; } /* OK, we can use this slot */ target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; esiop_lun = esiop_target->esiop_lun[lun]; /* if non-tagged command active, panic: this shouldn't happen */ if (esiop_lun->active != NULL) { panic("esiop_start: tagged cmd while untagged running"); } #ifdef DIAGNOSTIC /* sanity check the tag if needed */ if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { if (esiop_lun->tactive[esiop_cmd->cmd_c.tag] != NULL) panic("esiop_start: tag not free"); if (esiop_cmd->cmd_c.tag >= ESIOP_NTAG || esiop_cmd->cmd_c.tag < 0) { scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); printf(": tag id %d\n", esiop_cmd->cmd_c.tag); panic("esiop_start: invalid tag id"); } } #endif #ifdef SIOP_DEBUG_SCHED printf("using slot %d for DSA 0x%lx\n", slot, (u_long)esiop_cmd->cmd_c.dsa); #endif /* mark command as active */ if (esiop_cmd->cmd_c.status == CMDST_READY) esiop_cmd->cmd_c.status = CMDST_ACTIVE; else panic("esiop_start: bad status"); if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { esiop_lun->tactive[esiop_cmd->cmd_c.tag] = esiop_cmd; /* DSA table for reselect */ if ((esiop_lun->lun_flags & LUNF_TAGTABLE) == 0) { esiop_script_write(sc, esiop_target->lun_table_offset + lun + 2, esiop_lun->lun_tagtbl->tbl_dsa); esiop_lun->lun_flags |= LUNF_TAGTABLE; } esiop_lun->lun_tagtbl->tbl[esiop_cmd->cmd_c.tag] = htole32(esiop_cmd->cmd_c.dsa); bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_lun->lun_tagtbl->tblblk->blkmap, esiop_lun->lun_tagtbl->tbl_offset, sizeof(u_int32_t) * ESIOP_NTAG, BUS_DMASYNC_PREWRITE); } else { esiop_lun->active = esiop_cmd; /* DSA table for reselect */ esiop_script_write(sc, esiop_target->lun_table_offset + lun + 2, esiop_cmd->cmd_c.dsa); esiop_lun->lun_flags &= ~LUNF_TAGTABLE; } /* scheduler slot: ID, then DSA */ esiop_script_write(sc, sc->sc_shedoffset + slot * 2 + 1, sc->sc_c.targets[target]->id); esiop_script_write(sc, sc->sc_shedoffset + slot * 2, esiop_cmd->cmd_c.dsa); /* handle timeout */ if ((esiop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { /* start exire timer */ timeout = mstohz(esiop_cmd->cmd_c.xs->timeout); if (timeout == 0) timeout = 1; callout_reset( &esiop_cmd->cmd_c.xs->xs_callout, timeout, esiop_timeout, esiop_cmd); } /* make sure SCRIPT processor will read valid data */ esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); /* Signal script it has some work to do */ bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT, ISTAT_SIGP); /* update the current slot, and wait for IRQ */ sc->sc_currschedslot++; if (sc->sc_currschedslot >= A_ncmd_slots) sc->sc_currschedslot = 0; return; } void esiop_timeout(v) void *v; { struct esiop_cmd *esiop_cmd = v; struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; int s; scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); printf("command timeout\n"); s = splbio(); /* reset the scsi bus */ siop_resetbus(&sc->sc_c); /* deactivate callout */ callout_stop(&esiop_cmd->cmd_c.xs->xs_callout); /* * mark command has being timed out and just return; * the bus reset will generate an interrupt, * it will be handled in siop_intr() */ esiop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; splx(s); return; } void esiop_dump_script(sc) struct esiop_softc *sc; { int i; for (i = 0; i < PAGE_SIZE / 4; i += 2) { printf("0x%04x: 0x%08x 0x%08x", i * 4, le32toh(sc->sc_c.sc_script[i]), le32toh(sc->sc_c.sc_script[i+1])); if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 0xc0000000) { i++; printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); } printf("\n"); } } void esiop_morecbd(sc) struct esiop_softc *sc; { int error, i, s; bus_dma_segment_t seg; int rseg; struct esiop_cbd *newcbd; struct esiop_xfer *xfer; bus_addr_t dsa; /* allocate a new list head */ newcbd = malloc(sizeof(struct esiop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); if (newcbd == NULL) { printf("%s: can't allocate memory for command descriptors " "head\n", sc->sc_c.sc_dev.dv_xname); return; } /* allocate cmd list */ newcbd->cmds = malloc(sizeof(struct esiop_cmd) * SIOP_NCMDPB, M_DEVBUF, M_NOWAIT|M_ZERO); if (newcbd->cmds == NULL) { printf("%s: can't allocate memory for command descriptors\n", sc->sc_c.sc_dev.dv_xname); goto bad3; } error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to allocate cbd DMA memory, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad2; } error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, (caddr_t *)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); if (error) { printf("%s: unable to map cbd DMA memory, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad2; } error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &newcbd->xferdma); if (error) { printf("%s: unable to create cbd DMA map, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad1; } error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to load cbd DMA map, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad0; } #ifdef DEBUG printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); #endif for (i = 0; i < SIOP_NCMDPB; i++) { error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &newcbd->cmds[i].cmd_c.dmamap_data); if (error) { printf("%s: unable to create data DMA map for cbd: " "error %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad0; } error = bus_dmamap_create(sc->sc_c.sc_dmat, sizeof(struct scsipi_generic), 1, sizeof(struct scsipi_generic), 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &newcbd->cmds[i].cmd_c.dmamap_cmd); if (error) { printf("%s: unable to create cmd DMA map for cbd %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad0; } newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; newcbd->cmds[i].esiop_cbdp = newcbd; xfer = &newcbd->xfers[i]; newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct esiop_xfer)); dsa = newcbd->xferdma->dm_segs[0].ds_addr + i * sizeof(struct esiop_xfer); newcbd->cmds[i].cmd_c.dsa = dsa; newcbd->cmds[i].cmd_c.status = CMDST_FREE; xfer->siop_tables.t_msgout.count= htole32(1); xfer->siop_tables.t_msgout.addr = htole32(dsa); xfer->siop_tables.t_msgin.count= htole32(1); xfer->siop_tables.t_msgin.addr = htole32(dsa + offsetof(struct siop_common_xfer, msg_in)); xfer->siop_tables.t_extmsgin.count= htole32(2); xfer->siop_tables.t_extmsgin.addr = htole32(dsa + offsetof(struct siop_common_xfer, msg_in) + 1); xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + offsetof(struct siop_common_xfer, msg_in) + 3); xfer->siop_tables.t_status.count= htole32(1); xfer->siop_tables.t_status.addr = htole32(dsa + offsetof(struct siop_common_xfer, status)); s = splbio(); TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); splx(s); #ifdef SIOP_DEBUG printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); #endif } s = splbio(); TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; splx(s); return; bad0: bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); bad1: bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); bad2: free(newcbd->cmds, M_DEVBUF); bad3: free(newcbd, M_DEVBUF); return; } void esiop_moretagtbl(sc) struct esiop_softc *sc; { int error, i, j, s; bus_dma_segment_t seg; int rseg; struct esiop_dsatblblk *newtblblk; struct esiop_dsatbl *newtbls; u_int32_t *tbls; /* allocate a new list head */ newtblblk = malloc(sizeof(struct esiop_dsatblblk), M_DEVBUF, M_NOWAIT|M_ZERO); if (newtblblk == NULL) { printf("%s: can't allocate memory for tag DSA table block\n", sc->sc_c.sc_dev.dv_xname); return; } /* allocate tbl list */ newtbls = malloc(sizeof(struct esiop_dsatbl) * ESIOP_NTPB, M_DEVBUF, M_NOWAIT|M_ZERO); if (newtbls == NULL) { printf("%s: can't allocate memory for command descriptors\n", sc->sc_c.sc_dev.dv_xname); goto bad3; } error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to allocate tbl DMA memory, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad2; } error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, (caddr_t *)&tbls, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); if (error) { printf("%s: unable to map tbls DMA memory, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad2; } error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &newtblblk->blkmap); if (error) { printf("%s: unable to create tbl DMA map, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad1; } error = bus_dmamap_load(sc->sc_c.sc_dmat, newtblblk->blkmap, tbls, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to load tbl DMA map, error = %d\n", sc->sc_c.sc_dev.dv_xname, error); goto bad0; } #ifdef DEBUG printf("%s: alloc new tag DSA table at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, (unsigned long)newtblblk->blkmap->dm_segs[0].ds_addr); #endif for (i = 0; i < ESIOP_NTPB; i++) { newtbls[i].tblblk = newtblblk; newtbls[i].tbl = &tbls[i * ESIOP_NTAG]; newtbls[i].tbl_offset = i * ESIOP_NTAG * sizeof(u_int32_t); newtbls[i].tbl_dsa = newtblblk->blkmap->dm_segs[0].ds_addr + newtbls[i].tbl_offset; for (j = 0; j < ESIOP_NTAG; j++) newtbls[i].tbl[j] = j; s = splbio(); TAILQ_INSERT_TAIL(&sc->free_tagtbl, &newtbls[i], next); splx(s); } s = splbio(); TAILQ_INSERT_TAIL(&sc->tag_tblblk, newtblblk, next); splx(s); return; bad0: bus_dmamap_unload(sc->sc_c.sc_dmat, newtblblk->blkmap); bus_dmamap_destroy(sc->sc_c.sc_dmat, newtblblk->blkmap); bad1: bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); bad2: free(newtbls, M_DEVBUF); bad3: free(newtblblk, M_DEVBUF); return; } void esiop_update_scntl3(sc, _siop_target) struct esiop_softc *sc; struct siop_common_target *_siop_target; { int slot; u_int32_t slotid, id; struct esiop_target *esiop_target = (struct esiop_target *)_siop_target; esiop_script_write(sc, esiop_target->lun_table_offset, esiop_target->target_c.id); id = esiop_target->target_c.id & 0x00ff0000; /* There may be other commands waiting in the scheduler. handle them */ for (slot = 0; slot < A_ncmd_slots; slot++) { slotid = esiop_script_read(sc, sc->sc_shedoffset + slot * 2 + 1); if ((slotid & 0x00ff0000) == id) esiop_script_write(sc, sc->sc_shedoffset + slot * 2 + 1, esiop_target->target_c.id); } esiop_script_sync(sc, BUS_DMASYNC_PREWRITE); } void esiop_add_dev(sc, target, lun) struct esiop_softc *sc; int target; int lun; { struct esiop_target *esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; if (esiop_target->target_c.flags & TARF_TAG) { /* we need a tag DSA table */ esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); if (esiop_lun->lun_tagtbl == NULL) { esiop_moretagtbl(sc); esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); if (esiop_lun->lun_tagtbl == NULL) { /* no resources, run untagged */ esiop_target->target_c.flags &= ~TARF_TAG; return; } } TAILQ_REMOVE(&sc->free_tagtbl, esiop_lun->lun_tagtbl, next); } } void esiop_del_dev(sc, target, lun) struct esiop_softc *sc; int target; int lun; { struct esiop_target *esiop_target; #ifdef SIOP_DEBUG printf("%s:%d:%d: free lun sw entry\n", sc->sc_c.sc_dev.dv_xname, target, lun); #endif if (sc->sc_c.targets[target] == NULL) return; esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; free(esiop_target->esiop_lun[lun], M_DEVBUF); esiop_target->esiop_lun[lun] = NULL; } struct esiop_cmd * esiop_cmd_find(sc, target, dsa) struct esiop_softc *sc; int target; u_int32_t dsa; { int lun, tag; struct esiop_cmd *cmd; struct esiop_lun *esiop_lun; struct esiop_target *esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; if (esiop_target == NULL) return NULL; for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { esiop_lun = esiop_target->esiop_lun[lun]; if (esiop_lun == NULL) continue; cmd = esiop_lun->active; if (cmd && cmd->cmd_c.dsa == dsa) return cmd; if (esiop_target->target_c.flags & TARF_TAG) { for (tag = 0; tag < ESIOP_NTAG; tag++) { cmd = esiop_lun->tactive[tag]; if (cmd && cmd->cmd_c.dsa == dsa) return cmd; } } } return NULL; } void esiop_target_register(sc, target) struct esiop_softc *sc; u_int32_t target; { struct esiop_target *esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; /* get a DSA table for this target */ esiop_target->lun_table_offset = sc->sc_free_offset; sc->sc_free_offset += sc->sc_c.sc_chan.chan_nluns + 2; #ifdef SIOP_DEBUG printf("%s: lun table for target %d offset %d free offset %d\n", sc->sc_c.sc_dev.dv_xname, target, esiop_target->lun_table_offset, sc->sc_free_offset); #endif /* first 32 bytes are ID (for select) */ esiop_script_write(sc, esiop_target->lun_table_offset, esiop_target->target_c.id); /* Record this table in the target DSA table */ esiop_script_write(sc, sc->sc_target_table_offset + target, (esiop_target->lun_table_offset * sizeof(u_int32_t)) + sc->sc_c.sc_scriptaddr); esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } #ifdef SIOP_STATS void esiop_printstats() { printf("esiop_stat_intr %d\n", esiop_stat_intr); printf("esiop_stat_intr_shortxfer %d\n", esiop_stat_intr_shortxfer); printf("esiop_stat_intr_xferdisc %d\n", esiop_stat_intr_xferdisc); printf("esiop_stat_intr_sdp %d\n", esiop_stat_intr_sdp); printf("esiop_stat_intr_done %d\n", esiop_stat_intr_done); printf("esiop_stat_intr_lunresel %d\n", esiop_stat_intr_lunresel); printf("esiop_stat_intr_qfull %d\n", esiop_stat_intr_qfull); } #endif