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freebsd-skq/sys/dev/esp/esp_sbus.c

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/*-
* Copyright (c) 2004 Scott Long
* Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/* $NetBSD: esp_sbus.c,v 1.51 2009/09/17 16:28:12 tsutsui Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/ofw_machdep.h>
#include <machine/resource.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <sparc64/sbus/lsi64854reg.h>
#include <sparc64/sbus/lsi64854var.h>
#include <sparc64/sbus/sbusvar.h>
#include <dev/esp/ncr53c9xreg.h>
#include <dev/esp/ncr53c9xvar.h>
/* #define ESP_SBUS_DEBUG */
struct esp_softc {
struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */
device_t sc_dev;
struct resource *sc_res;
struct resource *sc_irqres;
void *sc_irq;
struct lsi64854_softc *sc_dma; /* pointer to my DMA */
};
static int esp_probe(device_t);
static int esp_dma_attach(device_t);
static int esp_dma_detach(device_t);
static int esp_sbus_attach(device_t);
static int esp_sbus_detach(device_t);
static int esp_suspend(device_t);
static int esp_resume(device_t);
static device_method_t esp_dma_methods[] = {
DEVMETHOD(device_probe, esp_probe),
DEVMETHOD(device_attach, esp_dma_attach),
DEVMETHOD(device_detach, esp_dma_detach),
DEVMETHOD(device_suspend, esp_suspend),
DEVMETHOD(device_resume, esp_resume),
DEVMETHOD_END
};
static driver_t esp_dma_driver = {
"esp",
esp_dma_methods,
sizeof(struct esp_softc)
};
DRIVER_MODULE(esp, dma, esp_dma_driver, esp_devclass, 0, 0);
MODULE_DEPEND(esp, dma, 1, 1, 1);
static device_method_t esp_sbus_methods[] = {
DEVMETHOD(device_probe, esp_probe),
DEVMETHOD(device_attach, esp_sbus_attach),
DEVMETHOD(device_detach, esp_sbus_detach),
DEVMETHOD(device_suspend, esp_suspend),
DEVMETHOD(device_resume, esp_resume),
DEVMETHOD_END
};
static driver_t esp_sbus_driver = {
"esp",
esp_sbus_methods,
sizeof(struct esp_softc)
};
DRIVER_MODULE(esp, sbus, esp_sbus_driver, esp_devclass, 0, 0);
MODULE_DEPEND(esp, sbus, 1, 1, 1);
/*
* Functions and the switch for the MI code
*/
static uint8_t esp_read_reg(struct ncr53c9x_softc *sc, int reg);
static void esp_write_reg(struct ncr53c9x_softc *sc, int reg, uint8_t v);
static int esp_dma_isintr(struct ncr53c9x_softc *sc);
static void esp_dma_reset(struct ncr53c9x_softc *sc);
static int esp_dma_intr(struct ncr53c9x_softc *sc);
static int esp_dma_setup(struct ncr53c9x_softc *sc, void **addr,
size_t *len, int datain, size_t *dmasize);
static void esp_dma_go(struct ncr53c9x_softc *sc);
static void esp_dma_stop(struct ncr53c9x_softc *sc);
static int esp_dma_isactive(struct ncr53c9x_softc *sc);
static int espattach(struct esp_softc *esc,
const struct ncr53c9x_glue *gluep);
static int espdetach(struct esp_softc *esc);
static const struct ncr53c9x_glue esp_sbus_glue = {
esp_read_reg,
esp_write_reg,
esp_dma_isintr,
esp_dma_reset,
esp_dma_intr,
esp_dma_setup,
esp_dma_go,
esp_dma_stop,
esp_dma_isactive,
};
static int
esp_probe(device_t dev)
{
const char *name;
name = ofw_bus_get_name(dev);
if (strcmp("SUNW,fas", name) == 0) {
device_set_desc(dev, "Sun FAS366 Fast-Wide SCSI");
return (BUS_PROBE_DEFAULT);
} else if (strcmp("esp", name) == 0) {
device_set_desc(dev, "Sun ESP SCSI/Sun FAS Fast-SCSI");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
esp_sbus_attach(device_t dev)
{
struct esp_softc *esc;
struct ncr53c9x_softc *sc;
struct lsi64854_softc *lsc;
device_t *children;
int error, i, nchildren;
esc = device_get_softc(dev);
sc = &esc->sc_ncr53c9x;
lsc = NULL;
esc->sc_dev = dev;
sc->sc_freq = sbus_get_clockfreq(dev);
if (strcmp(ofw_bus_get_name(dev), "SUNW,fas") == 0) {
/*
* Allocate space for DMA, in SUNW,fas there are no
* separate DMA devices.
*/
lsc = malloc(sizeof (struct lsi64854_softc), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (lsc == NULL) {
device_printf(dev, "out of memory (lsi64854_softc)\n");
return (ENOMEM);
}
esc->sc_dma = lsc;
/*
* SUNW,fas have 2 register spaces: DMA (lsi64854) and
* SCSI core (ncr53c9x).
*/
/* Allocate DMA registers. */
i = 0;
if ((lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&i, RF_ACTIVE)) == NULL) {
device_printf(dev, "cannot allocate DMA registers\n");
error = ENXIO;
goto fail_sbus_lsc;
}
/* Create a parent DMA tag based on this bus. */
error = bus_dma_tag_create(
bus_get_dma_tag(dev), /* parent */
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* nsegments */
BUS_SPACE_MAXSIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* no locking */
&lsc->sc_parent_dmat);
if (error != 0) {
device_printf(dev, "cannot allocate parent DMA tag\n");
goto fail_sbus_lres;
}
i = sbus_get_burstsz(dev);
#ifdef ESP_SBUS_DEBUG
printf("%s: burst 0x%x\n", __func__, i);
#endif
lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
(i & SBUS_BURST_16) ? 16 : 0;
lsc->sc_channel = L64854_CHANNEL_SCSI;
lsc->sc_client = sc;
lsc->sc_dev = dev;
/*
* Allocate SCSI core registers.
*/
i = 1;
if ((esc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&i, RF_ACTIVE)) == NULL) {
device_printf(dev,
"cannot allocate SCSI core registers\n");
error = ENXIO;
goto fail_sbus_lpdma;
}
} else {
/*
* Search accompanying DMA engine. It should have been
* already attached otherwise there isn't much we can do.
*/
if (device_get_children(device_get_parent(dev), &children,
&nchildren) != 0) {
device_printf(dev, "cannot determine siblings\n");
return (ENXIO);
}
for (i = 0; i < nchildren; i++) {
if (device_is_attached(children[i]) &&
sbus_get_slot(children[i]) ==
sbus_get_slot(dev) &&
strcmp(ofw_bus_get_name(children[i]),
"dma") == 0) {
/* XXX hackery */
esc->sc_dma = (struct lsi64854_softc *)
device_get_softc(children[i]);
break;
}
}
free(children, M_TEMP);
if (esc->sc_dma == NULL) {
device_printf(dev, "cannot find DMA engine\n");
return (ENXIO);
}
esc->sc_dma->sc_client = sc;
/*
* Allocate SCSI core registers.
*/
i = 0;
if ((esc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&i, RF_ACTIVE)) == NULL) {
device_printf(dev,
"cannot allocate SCSI core registers\n");
return (ENXIO);
}
}
error = espattach(esc, &esp_sbus_glue);
if (error != 0) {
device_printf(dev, "espattach failed\n");
goto fail_sbus_eres;
}
return (0);
fail_sbus_eres:
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(esc->sc_res),
esc->sc_res);
if (strcmp(ofw_bus_get_name(dev), "SUNW,fas") != 0)
return (error);
fail_sbus_lpdma:
bus_dma_tag_destroy(lsc->sc_parent_dmat);
fail_sbus_lres:
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
lsc->sc_res);
fail_sbus_lsc:
free(lsc, M_DEVBUF);
return (error);
}
static int
esp_sbus_detach(device_t dev)
{
struct esp_softc *esc;
struct lsi64854_softc *lsc;
int error;
esc = device_get_softc(dev);
lsc = esc->sc_dma;
error = espdetach(esc);
if (error != 0)
return (error);
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(esc->sc_res),
esc->sc_res);
if (strcmp(ofw_bus_get_name(dev), "SUNW,fas") != 0)
return (0);
bus_dma_tag_destroy(lsc->sc_parent_dmat);
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
lsc->sc_res);
free(lsc, M_DEVBUF);
return (0);
}
static int
esp_dma_attach(device_t dev)
{
struct esp_softc *esc;
struct ncr53c9x_softc *sc;
int error, i;
esc = device_get_softc(dev);
sc = &esc->sc_ncr53c9x;
esc->sc_dev = dev;
if (OF_getprop(ofw_bus_get_node(dev), "clock-frequency",
&sc->sc_freq, sizeof(sc->sc_freq)) == -1) {
printf("failed to query OFW for clock-frequency\n");
return (ENXIO);
}
/* XXX hackery */
esc->sc_dma = (struct lsi64854_softc *)
device_get_softc(device_get_parent(dev));
esc->sc_dma->sc_client = sc;
/*
* Allocate SCSI core registers.
*/
i = 0;
if ((esc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&i, RF_ACTIVE)) == NULL) {
device_printf(dev, "cannot allocate SCSI core registers\n");
return (ENXIO);
}
error = espattach(esc, &esp_sbus_glue);
if (error != 0) {
device_printf(dev, "espattach failed\n");
goto fail_dma_eres;
}
return (0);
fail_dma_eres:
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(esc->sc_res),
esc->sc_res);
return (error);
}
static int
esp_dma_detach(device_t dev)
{
struct esp_softc *esc;
int error;
esc = device_get_softc(dev);
error = espdetach(esc);
if (error != 0)
return (error);
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(esc->sc_res),
esc->sc_res);
return (0);
}
static int
esp_suspend(device_t dev)
{
return (ENXIO);
}
static int
esp_resume(device_t dev)
{
return (ENXIO);
}
static int
espattach(struct esp_softc *esc, const struct ncr53c9x_glue *gluep)
{
struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
unsigned int uid = 0;
int error, i;
NCR_LOCK_INIT(sc);
sc->sc_id = OF_getscsinitid(esc->sc_dev);
#ifdef ESP_SBUS_DEBUG
device_printf(esc->sc_dev, "%s: sc_id %d, freq %d\n",
__func__, sc->sc_id, sc->sc_freq);
#endif
/*
* The `ESC' DMA chip must be reset before we can access
* the ESP registers.
*/
if (esc->sc_dma->sc_rev == DMAREV_ESC)
DMA_RESET(esc->sc_dma);
/*
* Set up glue for MI code early; we use some of it here.
*/
sc->sc_glue = gluep;
/* gimme MHz */
sc->sc_freq /= 1000000;
/*
* XXX More of this should be in ncr53c9x_attach(), but
* XXX should we really poke around the chip that much in
* XXX the MI code? Think about this more...
*/
/*
* Read the part-unique ID code of the SCSI chip. The contained
* value is only valid if all of the following conditions are met:
* - After power-up or chip reset.
* - Before any value is written to this register.
* - The NCRCFG2_FE bit is set.
* - A (NCRCMD_NOP | NCRCMD_DMA) command has been issued.
*/
NCRCMD(sc, NCRCMD_RSTCHIP);
NCRCMD(sc, NCRCMD_NOP);
sc->sc_cfg2 = NCRCFG2_FE;
NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2);
NCRCMD(sc, NCRCMD_NOP | NCRCMD_DMA);
uid = NCR_READ_REG(sc, NCR_UID);
/*
* It is necessary to try to load the 2nd config register here,
* to find out what rev the esp chip is, else the ncr53c9x_reset
* will not set up the defaults correctly.
*/
sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB;
NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1);
sc->sc_cfg2 = 0;
NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2);
sc->sc_cfg2 = NCRCFG2_SCSI2 | NCRCFG2_RPE;
NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2);
if ((NCR_READ_REG(sc, NCR_CFG2) & ~NCRCFG2_RSVD) !=
(NCRCFG2_SCSI2 | NCRCFG2_RPE))
sc->sc_rev = NCR_VARIANT_ESP100;
else {
sc->sc_cfg2 = NCRCFG2_SCSI2;
NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2);
sc->sc_cfg3 = 0;
NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3);
sc->sc_cfg3 = (NCRCFG3_CDB | NCRCFG3_FCLK);
NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3);
if (NCR_READ_REG(sc, NCR_CFG3) !=
(NCRCFG3_CDB | NCRCFG3_FCLK))
sc->sc_rev = NCR_VARIANT_ESP100A;
else {
/* NCRCFG2_FE enables > 64K transfers. */
sc->sc_cfg2 |= NCRCFG2_FE;
sc->sc_cfg3 = 0;
NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3);
if (sc->sc_freq <= 25)
sc->sc_rev = NCR_VARIANT_ESP200;
else {
switch ((uid & 0xf8) >> 3) {
case 0x00:
sc->sc_rev = NCR_VARIANT_FAS100A;
break;
case 0x02:
if ((uid & 0x07) == 0x02)
sc->sc_rev =
NCR_VARIANT_FAS216;
else
sc->sc_rev =
NCR_VARIANT_FAS236;
break;
case 0x0a:
sc->sc_rev = NCR_VARIANT_FAS366;
break;
default:
/*
* We could just treat unknown chips
* as ESP200 but then we would most
* likely drive them out of specs.
*/
device_printf(esc->sc_dev,
"Unknown chip\n");
error = ENXIO;
goto fail_lock;
}
}
}
}
#ifdef ESP_SBUS_DEBUG
printf("%s: revision %d, uid 0x%x\n", __func__, sc->sc_rev, uid);
#endif
/*
* This is the value used to start sync negotiations
* Note that the NCR register "SYNCTP" is programmed
* in "clocks per byte", and has a minimum value of 4.
* The SCSI period used in negotiation is one-fourth
* of the time (in nanoseconds) needed to transfer one byte.
* Since the chip's clock is given in MHz, we have the following
* formula: 4 * period = (1000 / freq) * 4
*/
sc->sc_minsync = 1000 / sc->sc_freq;
/*
* Except for some variants the maximum transfer size is 64k.
*/
sc->sc_maxxfer = 64 * 1024;
sc->sc_maxoffset = 15;
sc->sc_extended_geom = 1;
/*
* Alas, we must now modify the value a bit, because it's
* only valid when we can switch on FASTCLK and FASTSCSI bits
* in the config register 3...
*/
switch (sc->sc_rev) {
case NCR_VARIANT_ESP100:
sc->sc_maxwidth = MSG_EXT_WDTR_BUS_8_BIT;
sc->sc_minsync = 0; /* No synch on old chip? */
break;
case NCR_VARIANT_ESP100A:
case NCR_VARIANT_ESP200:
sc->sc_maxwidth = MSG_EXT_WDTR_BUS_8_BIT;
/* Min clocks/byte is 5 */
sc->sc_minsync = ncr53c9x_cpb2stp(sc, 5);
break;
case NCR_VARIANT_FAS100A:
case NCR_VARIANT_FAS216:
case NCR_VARIANT_FAS236:
/*
* The onboard SCSI chips in Sun Ultra 1 are actually
* documented to be NCR53C9X which use NCRCFG3_FCLK and
* NCRCFG3_FSCSI. BSD/OS however probes these chips as
* FAS100A and uses NCRF9XCFG3_FCLK and NCRF9XCFG3_FSCSI
* instead which seems to be correct as otherwise sync
* negotiation just doesn't work. Using NCRF9XCFG3_FCLK
* and NCRF9XCFG3_FSCSI with these chips in fact also
* yields Fast-SCSI speed.
*/
sc->sc_features = NCR_F_FASTSCSI;
sc->sc_cfg3 = NCRF9XCFG3_FCLK;
sc->sc_cfg3_fscsi = NCRF9XCFG3_FSCSI;
sc->sc_maxwidth = MSG_EXT_WDTR_BUS_8_BIT;
sc->sc_maxxfer = 16 * 1024 * 1024;
break;
case NCR_VARIANT_FAS366:
sc->sc_maxwidth = MSG_EXT_WDTR_BUS_16_BIT;
sc->sc_maxxfer = 16 * 1024 * 1024;
break;
}
/*
* Given that we allocate resources based on sc->sc_maxxfer it doesn't
* make sense to supply a value higher than the maximum actually used.
*/
sc->sc_maxxfer = min(sc->sc_maxxfer, MAXPHYS);
/* Attach the DMA engine. */
error = lsi64854_attach(esc->sc_dma);
if (error != 0) {
device_printf(esc->sc_dev, "lsi64854_attach failed\n");
goto fail_lock;
}
/* Establish interrupt channel. */
i = 0;
if ((esc->sc_irqres = bus_alloc_resource_any(esc->sc_dev, SYS_RES_IRQ,
&i, RF_SHAREABLE|RF_ACTIVE)) == NULL) {
device_printf(esc->sc_dev, "cannot allocate interrupt\n");
goto fail_lsi;
}
if (bus_setup_intr(esc->sc_dev, esc->sc_irqres,
INTR_MPSAFE | INTR_TYPE_CAM, NULL, ncr53c9x_intr, sc,
&esc->sc_irq)) {
device_printf(esc->sc_dev, "cannot set up interrupt\n");
error = ENXIO;
goto fail_ires;
}
/* Turn on target selection using the `DMA' method. */
if (sc->sc_rev != NCR_VARIANT_FAS366)
sc->sc_features |= NCR_F_DMASELECT;
/* Do the common parts of attachment. */
sc->sc_dev = esc->sc_dev;
error = ncr53c9x_attach(sc);
if (error != 0) {
device_printf(esc->sc_dev, "ncr53c9x_attach failed\n");
goto fail_intr;
}
return (0);
fail_intr:
bus_teardown_intr(esc->sc_dev, esc->sc_irqres, esc->sc_irq);
fail_ires:
bus_release_resource(esc->sc_dev, SYS_RES_IRQ,
rman_get_rid(esc->sc_irqres), esc->sc_irqres);
fail_lsi:
lsi64854_detach(esc->sc_dma);
fail_lock:
NCR_LOCK_DESTROY(sc);
return (error);
}
static int
espdetach(struct esp_softc *esc)
{
struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
int error;
bus_teardown_intr(esc->sc_dev, esc->sc_irqres, esc->sc_irq);
error = ncr53c9x_detach(sc);
if (error != 0)
return (error);
error = lsi64854_detach(esc->sc_dma);
if (error != 0)
return (error);
NCR_LOCK_DESTROY(sc);
bus_release_resource(esc->sc_dev, SYS_RES_IRQ,
rman_get_rid(esc->sc_irqres), esc->sc_irqres);
return (0);
}
/*
* Glue functions
*/
#ifdef ESP_SBUS_DEBUG
static int esp_sbus_debug = 0;
static const struct {
const char *r_name;
int r_flag;
} const esp__read_regnames [] = {
{ "TCL", 0}, /* 0/00 */
{ "TCM", 0}, /* 1/04 */
{ "FIFO", 0}, /* 2/08 */
{ "CMD", 0}, /* 3/0c */
{ "STAT", 0}, /* 4/10 */
{ "INTR", 0}, /* 5/14 */
{ "STEP", 0}, /* 6/18 */
{ "FFLAGS", 1}, /* 7/1c */
{ "CFG1", 1}, /* 8/20 */
{ "STAT2", 0}, /* 9/24 */
{ "CFG4", 1}, /* a/28 */
{ "CFG2", 1}, /* b/2c */
{ "CFG3", 1}, /* c/30 */
{ "-none", 1}, /* d/34 */
{ "TCH", 1}, /* e/38 */
{ "TCX", 1}, /* f/3c */
};
static const const struct {
const char *r_name;
int r_flag;
} const esp__write_regnames[] = {
{ "TCL", 1}, /* 0/00 */
{ "TCM", 1}, /* 1/04 */
{ "FIFO", 0}, /* 2/08 */
{ "CMD", 0}, /* 3/0c */
{ "SELID", 1}, /* 4/10 */
{ "TIMEOUT", 1}, /* 5/14 */
{ "SYNCTP", 1}, /* 6/18 */
{ "SYNCOFF", 1}, /* 7/1c */
{ "CFG1", 1}, /* 8/20 */
{ "CCF", 1}, /* 9/24 */
{ "TEST", 1}, /* a/28 */
{ "CFG2", 1}, /* b/2c */
{ "CFG3", 1}, /* c/30 */
{ "-none", 1}, /* d/34 */
{ "TCH", 1}, /* e/38 */
{ "TCX", 1}, /* f/3c */
};
#endif
static uint8_t
esp_read_reg(struct ncr53c9x_softc *sc, int reg)
{
struct esp_softc *esc = (struct esp_softc *)sc;
uint8_t v;
v = bus_read_1(esc->sc_res, reg * 4);
#ifdef ESP_SBUS_DEBUG
if (esp_sbus_debug && (reg < 0x10) && esp__read_regnames[reg].r_flag)
printf("RD:%x <%s> %x\n", reg * 4, ((unsigned)reg < 0x10) ?
esp__read_regnames[reg].r_name : "<***>", v);
#endif
return (v);
}
static void
esp_write_reg(struct ncr53c9x_softc *sc, int reg, uint8_t v)
{
struct esp_softc *esc = (struct esp_softc *)sc;
#ifdef ESP_SBUS_DEBUG
if (esp_sbus_debug && (reg < 0x10) && esp__write_regnames[reg].r_flag)
printf("WR:%x <%s> %x\n", reg * 4, ((unsigned)reg < 0x10) ?
esp__write_regnames[reg].r_name : "<***>", v);
#endif
bus_write_1(esc->sc_res, reg * 4, v);
}
static int
esp_dma_isintr(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
return (DMA_ISINTR(esc->sc_dma));
}
static void
esp_dma_reset(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
DMA_RESET(esc->sc_dma);
}
static int
esp_dma_intr(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
return (DMA_INTR(esc->sc_dma));
}
static int
esp_dma_setup(struct ncr53c9x_softc *sc, void **addr, size_t *len,
int datain, size_t *dmasize)
{
struct esp_softc *esc = (struct esp_softc *)sc;
return (DMA_SETUP(esc->sc_dma, addr, len, datain, dmasize));
}
static void
esp_dma_go(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
DMA_GO(esc->sc_dma);
}
static void
esp_dma_stop(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
L64854_SCSR(esc->sc_dma, L64854_GCSR(esc->sc_dma) & ~D_EN_DMA);
}
static int
esp_dma_isactive(struct ncr53c9x_softc *sc)
{
struct esp_softc *esc = (struct esp_softc *)sc;
return (DMA_ISACTIVE(esc->sc_dma));
}
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