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NetBSD/sys/dev/ic/esiop.c

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/* $NetBSD: esiop.c,v 1.9 2002/04/25 19:34:02 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: esiop.c,v 1.9 2002/04/25 19:34:02 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <uvm/uvm_extern.h>
#include <machine/endian.h>
#include <machine/bus.h>
#include <dev/microcode/siop/esiop.out>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsi_message.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ic/siopreg.h>
#include <dev/ic/siopvar_common.h>
#include <dev/ic/esiopvar.h>
#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_target_register __P((struct esiop_softc *, u_int32_t));
void esiop_update_scntl3 __P((struct esiop_softc *,
struct siop_common_target *));
#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 * CMD_SLOTSIZE;
/* 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 * CMD_SLOTSIZE, A_f_cmd_free);
}
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 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) {
return retval;
}
retval = 1;
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);
if (sc->sc_flags & SCF_CHAN_NOSLOT) {
/*
* at last one command terminated,
* so we should have free slots now
*/
sc->sc_flags &= ~SCF_CHAN_NOSLOT;
scsipi_channel_thaw(&sc->sc_c.sc_chan, 1);
}
goto again;
}
if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) ==
(ISTAT_DIP | ISTAT_ABRT)) {
bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh,
SIOP_ISTAT, 0);
}
/* 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");
else
siop_clearfifo(&sc->sc_c);
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("T/L/Q=%d/%d/%d last msg_in=0x%x status=0x%x\n",
target, lun, tag, 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
* We also have to update the ring pointer ourselve
*/
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);
#ifdef SIOP_DEBUG_SCHED
printf("sel timeout target %d, slot %d\n", target, slot);
#endif
/*
* mark this slot as free, and advance to next slot
*/
esiop_script_write(sc,
sc->sc_shedoffset + slot * CMD_SLOTSIZE,
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 + sizeof(struct esiop_slot);
} 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) {
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 (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);
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 1;
}
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 * CMD_SLOTSIZE);
/* if the slot has any flag, it won't match the DSA */
if (slotdsa == esiop_cmd->cmd_c.dsa) { /* found it */
/* Mark this slot as ignore */
esiop_script_write(sc,
sc->sc_shedoffset + slot * CMD_SLOTSIZE,
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);
break;
}
}
}
esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
/*
* 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 + A_target_luntbl / sizeof(u_int32_t),
esiop_cmd->cmd_c.dsa);
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 tag %d(%d)\n", target, lun,
xs->xs_tag_type, xs->xs_tag_id);
#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) == 0) {
sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG;
/* allocate tag tables for this device */
for (lun = 0;
lun < sc->sc_c.sc_chan.chan_nluns; lun++) {
if (sc->sc_c.sc_chan.chan_periphs[
xm->xm_target][lun])
esiop_add_dev(sc, xm->xm_target, lun);
}
}
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;
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;
/*
* 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 * CMD_SLOTSIZE) &
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");
/* DSA table for reselect */
if (esiop_cmd->cmd_c.flags & CMDFL_TAG) {
esiop_lun->tactive[esiop_cmd->cmd_c.tag] = esiop_cmd;
/* DSA table for reselect */
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;
esiop_script_write(sc,
esiop_target->lun_table_offset +
lun * 2 + A_target_luntbl / sizeof(u_int32_t),
esiop_cmd->cmd_c.dsa);
}
/* scheduler slot: DSA */
esiop_script_write(sc, sc->sc_shedoffset + slot * CMD_SLOTSIZE,
esiop_cmd->cmd_c.dsa);
/* make sure SCRIPT processor will read valid data */
esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
/* 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);
}
/* 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;
#ifdef SIOP_DEBUG
int slot, slotdsa;
#endif
s = splbio();
esiop_table_sync(esiop_cmd,
BUS_DMASYNC_POSTREAD |
BUS_DMASYNC_POSTWRITE);
scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph);
#ifdef SIOP_DEBUG
printf("command timeout (status %d)\n", le32toh(esiop_cmd->cmd_tables->status));
esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (slot = 0; slot < A_ncmd_slots; slot++) {
slotdsa = esiop_script_read(sc,
sc->sc_shedoffset + slot * CMD_SLOTSIZE);
if ((slotdsa & 0x01) == 0)
printf("slot %d not free (0x%x)\n", slot, slotdsa);
}
printf("istat 0x%x ", bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT));
printf("DSP 0x%lx DSA 0x%x\n",
(u_long)(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));
bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_CTEST2);
printf("istat 0x%x\n", bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT));
#else
printf("command timeout\n");
#endif
/* 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;
{
struct esiop_target *esiop_target = (struct esiop_target *)_siop_target;
esiop_script_write(sc, esiop_target->lun_table_offset,
esiop_target->target_c.id);
}
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];
/* 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);
/* Update LUN DSA table */
esiop_script_write(sc, esiop_target->lun_table_offset +
lun * 2 + A_target_luntbl_tag / sizeof(u_int32_t),
esiop_lun->lun_tagtbl->tbl_dsa);
esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
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;
}
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];
struct esiop_lun *esiop_lun;
int lun;
/* 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 + 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);
/* if we have a tag table, register it */
for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) {
esiop_lun = esiop_target->esiop_lun[lun];
if (esiop_lun == NULL)
continue;
if (esiop_lun->lun_tagtbl)
esiop_script_write(sc, esiop_target->lun_table_offset +
lun * 2 + A_target_luntbl_tag / sizeof(u_int32_t),
esiop_lun->lun_tagtbl->tbl_dsa);
}
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
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