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freebsd-skq/sys/dev/isp/isp_sbus.c
marius f8c9f3a5e2 - Introduce an ofw_bus kobj-interface for retrieving the OFW node and a 
subset ("compatible", "device_type", "model" and "name") of the standard
  properties in drivers for devices on Open Firmware supported busses. The
  standard properties "reg", "interrupts" und "address" are not covered by
  this interface because they are only of interest in the respective bridge
  code. There's a remaining standard property "status" which is unclear how
  to support properly but which also isn't used in FreeBSD at present.
  This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
  ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
  vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
  This in turn allows to simplify and remove code-duplication in drivers for
  devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
  drivers for their children to use the ofw_bus kobj-interface. The IVAR-
  interfaces of the Central, EBus and FHC are entirely replaced by this. The
  PCI bus driver used its own kobj-interface and now also uses the ofw_bus
  one. The IVARs special to the SBus, e.g. for retrieving the burst size,
  remain.
  Beware: this causes an ABI-breakage for modules of drivers which used the
  IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
  recompiled.
  The style-inconsistencies introduced in some of the bus drivers will be
  fixed by tmm@ in a generic clean-up of the respective drivers later (he
  requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
  use the ofw_bus kobj-interface. This invloves removing the IVARs related
  to the "reg" property which were unused and a leftover from the NetBSD
  origini of the code. There's no ABI-breakage caused by this because none
  of these driver are currently built as modules.
  There are other powerpc bus drivers which can be converted to the ofw_bus
  kobj-interface, e.g. the PCI bus driver, which should be done together
  with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
  advantage of the ofw_bus kobj-interface and simplify them a bit.

Reviewed by:	grehan, tmm
Approved by:	re (scottl)
Discussed with:	tmm
Tested with:	Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00

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/*-
* PCI specific probe and attach routines for Qlogic ISP SCSI adapters.
* FreeBSD Version.
*
* Copyright (c) 1997, 1998, 1999, 2000, 2001 by Matthew Jacob
*
* 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 immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. 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 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <sparc64/sbus/sbusvar.h>
#include <dev/isp/isp_freebsd.h>
static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int);
static void isp_sbus_wr_reg(struct ispsoftc *, int, u_int16_t);
static int
isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
static int isp_sbus_mbxdma(struct ispsoftc *);
static int
isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, u_int16_t);
static void
isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t);
static void isp_sbus_reset1(struct ispsoftc *);
static void isp_sbus_dumpregs(struct ispsoftc *, const char *);
static struct ispmdvec mdvec = {
isp_sbus_rd_isr,
isp_sbus_rd_reg,
isp_sbus_wr_reg,
isp_sbus_mbxdma,
isp_sbus_dmasetup,
isp_sbus_dmateardown,
NULL,
isp_sbus_reset1,
isp_sbus_dumpregs,
NULL,
BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
};
static int isp_sbus_probe (device_t);
static int isp_sbus_attach (device_t);
struct isp_sbussoftc {
struct ispsoftc sbus_isp;
device_t sbus_dev;
struct resource * sbus_reg;
bus_space_tag_t sbus_st;
bus_space_handle_t sbus_sh;
void * ih;
int16_t sbus_poff[_NREG_BLKS];
bus_dma_tag_t dmat;
bus_dmamap_t *dmaps;
sdparam sbus_param;
struct ispmdvec sbus_mdvec;
struct resource * sbus_ires;
};
extern ispfwfunc *isp_get_firmware_p;
static device_method_t isp_sbus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, isp_sbus_probe),
DEVMETHOD(device_attach, isp_sbus_attach),
{ 0, 0 }
};
static void isp_sbus_intr(void *);
static driver_t isp_sbus_driver = {
"isp", isp_sbus_methods, sizeof (struct isp_sbussoftc)
};
static devclass_t isp_devclass;
DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0);
static int
isp_sbus_probe(device_t dev)
{
int found = 0;
const char *name = ofw_bus_get_name(dev);
if (strcmp(name, "SUNW,isp") == 0 ||
strcmp(name, "QLGC,isp") == 0 ||
strcmp(name, "ptisp") == 0 ||
strcmp(name, "PTI,ptisp") == 0) {
found++;
}
if (!found)
return (ENXIO);
if (isp_announced == 0 && bootverbose) {
printf("Qlogic ISP Driver, FreeBSD Version %d.%d, "
"Core Version %d.%d\n",
ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
isp_announced++;
}
return (0);
}
static int
isp_sbus_attach(device_t dev)
{
struct resource *regs;
int tval, iqd, isp_debug, role, rid, ispburst, freq;
struct isp_sbussoftc *sbs;
struct ispsoftc *isp = NULL;
int locksetup = 0;
/*
* Figure out if we're supposed to skip this one.
* If we are, we actually go to ISP_ROLE_NONE.
*/
tval = 0;
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"disable", &tval) == 0 && tval) {
device_printf(dev, "device is disabled\n");
/* but return 0 so the !$)$)*!$*) unit isn't reused */
return (0);
}
role = 0;
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"role", &role) == 0 &&
((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) {
device_printf(dev, "setting role to 0x%x\n", role);
} else {
#ifdef ISP_TARGET_MODE
role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET;
#else
role = ISP_DEFAULT_ROLES;
#endif
}
sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO);
if (sbs == NULL) {
device_printf(dev, "cannot allocate softc\n");
return (ENOMEM);
}
regs = NULL;
iqd = 0;
rid = 0;
regs =
bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (regs == 0) {
device_printf(dev, "unable to map registers\n");
goto bad;
}
sbs->sbus_dev = dev;
sbs->sbus_reg = regs;
sbs->sbus_st = rman_get_bustag(regs);
sbs->sbus_sh = rman_get_bushandle(regs);
sbs->sbus_mdvec = mdvec;
sbs->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
sbs->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF;
sbs->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF;
sbs->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF;
sbs->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
isp = &sbs->sbus_isp;
isp->isp_mdvec = &sbs->sbus_mdvec;
isp->isp_bustype = ISP_BT_SBUS;
isp->isp_type = ISP_HA_SCSI_UNKNOWN;
isp->isp_param = &sbs->sbus_param;
isp->isp_revision = 0; /* XXX */
isp->isp_role = role;
isp->isp_dev = dev;
freq = sbus_get_clockfreq(dev);
if (freq) {
/*
* Convert from HZ to MHz, rounding up.
*/
freq = (freq + 500000)/1000000;
} else {
freq = 25;
}
sbs->sbus_mdvec.dv_clock = freq << 8;
/*
* Now figure out what the proper burst sizes, etc., to use.
* Unfortunately, there is no ddi_dma_burstsizes here which
* walks up the tree finding the limiting burst size node (if
* any). We just use what's here for isp.
*/
ispburst = sbus_get_burstsz(dev);
if (ispburst == 0) {
ispburst = SBUS_BURST_32 - 1;
}
sbs->sbus_mdvec.dv_conf1 = 0;
if (ispburst & (1 << 5)) {
sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32;
} else if (ispburst & (1 << 4)) {
sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16;
} else if (ispburst & (1 << 3)) {
sbs->sbus_mdvec.dv_conf1 =
BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8;
}
if (sbs->sbus_mdvec.dv_conf1) {
sbs->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE;
}
/*
* Some early versions of the PTI SBus adapter
* would fail in trying to download (via poking)
* FW. We give up on them.
*/
if (strcmp("PTI,ptisp", ofw_bus_get_name(dev)) == 0 ||
strcmp("ptisp", ofw_bus_get_name(dev)) == 0) {
isp->isp_confopts |= ISP_CFG_NORELOAD;
}
/*
* We don't trust NVRAM on SBus cards
*/
isp->isp_confopts |= ISP_CFG_NONVRAM;
/*
* Try and find firmware for this device.
*/
if (isp_get_firmware_p) {
(*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw);
}
iqd = 0;
sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd,
RF_ACTIVE | RF_SHAREABLE);
if (sbs->sbus_ires == NULL) {
device_printf(dev, "could not allocate interrupt\n");
goto bad;
}
tval = 0;
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"fwload_disable", &tval) == 0 && tval != 0) {
isp->isp_confopts |= ISP_CFG_NORELOAD;
}
isp->isp_osinfo.default_id = -1;
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"iid", &tval) == 0) {
isp->isp_osinfo.default_id = tval;
isp->isp_confopts |= ISP_CFG_OWNLOOPID;
}
if (isp->isp_osinfo.default_id == -1) {
/*
* XXX: should be a way to get properties w/o having
* XXX: to call OF_xxx functions
*/
isp->isp_osinfo.default_id = 7;
}
isp_debug = 0;
(void) resource_int_value(device_get_name(dev), device_get_unit(dev),
"debug", &isp_debug);
/* Make sure the lock is set up. */
mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF);
locksetup++;
if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS,
isp_sbus_intr, isp, &sbs->ih)) {
device_printf(dev, "could not setup interrupt\n");
goto bad;
}
/*
* Set up logging levels.
*/
if (isp_debug) {
isp->isp_dblev = isp_debug;
} else {
isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
}
if (bootverbose)
isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
/*
* Make sure we're in reset state.
*/
ISP_LOCK(isp);
isp_reset(isp);
if (isp->isp_state != ISP_RESETSTATE) {
ISP_UNLOCK(isp);
goto bad;
}
isp_init(isp);
if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_INITSTATE) {
isp_uninit(isp);
ISP_UNLOCK(isp);
goto bad;
}
isp_attach(isp);
if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_RUNSTATE) {
isp_uninit(isp);
ISP_UNLOCK(isp);
goto bad;
}
/*
* XXXX: Here is where we might unload the f/w module
* XXXX: (or decrease the reference count to it).
*/
ISP_UNLOCK(isp);
return (0);
bad:
if (sbs && sbs->ih) {
(void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih);
}
if (locksetup && isp) {
mtx_destroy(&isp->isp_osinfo.lock);
}
if (sbs && sbs->sbus_ires) {
bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires);
}
if (regs) {
(void) bus_release_resource(dev, 0, 0, regs);
}
if (sbs) {
if (sbs->sbus_isp.isp_param)
free(sbs->sbus_isp.isp_param, M_DEVBUF);
free(sbs, M_DEVBUF);
}
/*
* XXXX: Here is where we might unload the f/w module
* XXXX: (or decrease the reference count to it).
*/
return (ENXIO);
}
static void
isp_sbus_intr(void *arg)
{
struct ispsoftc *isp = arg;
u_int16_t isr, sema, mbox;
ISP_LOCK(isp);
isp->isp_intcnt++;
if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
isp->isp_intbogus++;
} else {
int iok = isp->isp_osinfo.intsok;
isp->isp_osinfo.intsok = 0;
isp_intr(isp, isr, sema, mbox);
isp->isp_osinfo.intsok = iok;
}
ISP_UNLOCK(isp);
}
#define IspVirt2Off(a, x) \
(((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \
_BLK_REG_SHFT] + ((x) & 0xff))
#define BXR2(sbc, off) \
bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off)
static int
isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp,
u_int16_t *semap, u_int16_t *mbp)
{
struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
u_int16_t isr, sema;
isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR));
sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA));
isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
isr &= INT_PENDING_MASK(isp);
sema &= BIU_SEMA_LOCK;
if (isr == 0 && sema == 0) {
return (0);
}
*isrp = isr;
if ((*semap = sema) != 0) {
*mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0));
}
return (1);
}
static u_int16_t
isp_sbus_rd_reg(struct ispsoftc *isp, int regoff)
{
u_int16_t rval;
struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp;
int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
offset += (regoff & 0xff);
rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset);
isp_prt(isp, ISP_LOGDEBUG3,
"isp_sbus_rd_reg(off %x) = %x", regoff, rval);
return (rval);
}
static void
isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val)
{
struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp;
int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
offset += (regoff & 0xff);
isp_prt(isp, ISP_LOGDEBUG3,
"isp_sbus_wr_reg(off %x) = %x", regoff, val);
bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val);
}
struct imush {
struct ispsoftc *isp;
int error;
};
static void imc(void *, bus_dma_segment_t *, int, int);
static void
imc(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct imush *imushp = (struct imush *) arg;
if (error) {
imushp->error = error;
} else {
struct ispsoftc *isp =imushp->isp;
bus_addr_t addr = segs->ds_addr;
isp->isp_rquest_dma = addr;
addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
isp->isp_result_dma = addr;
}
}
/*
* Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE
*/
#define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1)
static int
isp_sbus_mbxdma(struct ispsoftc *isp)
{
struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp;
caddr_t base;
u_int32_t len;
int i, error, ns;
struct imush im;
/*
* Already been here? If so, leave...
*/
if (isp->isp_rquest) {
return (0);
}
ISP_UNLOCK(isp);
if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT,
NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS,
BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant,
&sbs->dmat)) {
isp_prt(isp, ISP_LOGERR, "could not create master dma tag");
ISP_LOCK(isp);
return(1);
}
len = sizeof (XS_T **) * isp->isp_maxcmds;
isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO);
if (isp->isp_xflist == NULL) {
isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array");
ISP_LOCK(isp);
return (1);
}
len = sizeof (bus_dmamap_t) * isp->isp_maxcmds;
sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK);
if (sbs->dmaps == NULL) {
isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage");
free(isp->isp_xflist, M_DEVBUF);
ISP_LOCK(isp);
return (1);
}
/*
* Allocate and map the request, result queues, plus FC scratch area.
*/
len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
ns = (len / PAGE_SIZE) + 1;
if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL,
len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant,
&isp->isp_cdmat)) {
isp_prt(isp, ISP_LOGERR,
"cannot create a dma tag for control spaces");
free(sbs->dmaps, M_DEVBUF);
free(isp->isp_xflist, M_DEVBUF);
ISP_LOCK(isp);
return (1);
}
if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT,
&isp->isp_cdmap) != 0) {
isp_prt(isp, ISP_LOGERR,
"cannot allocate %d bytes of CCB memory", len);
bus_dma_tag_destroy(isp->isp_cdmat);
free(isp->isp_xflist, M_DEVBUF);
free(sbs->dmaps, M_DEVBUF);
ISP_LOCK(isp);
return (1);
}
for (i = 0; i < isp->isp_maxcmds; i++) {
error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]);
if (error) {
isp_prt(isp, ISP_LOGERR,
"error %d creating per-cmd DMA maps", error);
while (--i >= 0) {
bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]);
}
goto bad;
}
}
im.isp = isp;
im.error = 0;
bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0);
if (im.error) {
isp_prt(isp, ISP_LOGERR,
"error %d loading dma map for control areas", im.error);
goto bad;
}
isp->isp_rquest = base;
base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
ISP_LOCK(isp);
isp->isp_result = base;
return (0);
bad:
bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap);
bus_dma_tag_destroy(isp->isp_cdmat);
free(isp->isp_xflist, M_DEVBUF);
free(sbs->dmaps, M_DEVBUF);
ISP_LOCK(isp);
isp->isp_rquest = NULL;
return (1);
}
typedef struct {
struct ispsoftc *isp;
void *cmd_token;
void *rq;
u_int16_t *nxtip;
u_int16_t optr;
u_int error;
} mush_t;
#define MUSHERR_NOQENTRIES -2
static void dma2(void *, bus_dma_segment_t *, int, int);
static void
dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
{
mush_t *mp;
struct ispsoftc *isp;
struct ccb_scsiio *csio;
struct isp_sbussoftc *sbs;
bus_dmamap_t *dp;
bus_dma_segment_t *eseg;
ispreq_t *rq;
int seglim, datalen;
u_int16_t nxti;
mp = (mush_t *) arg;
if (error) {
mp->error = error;
return;
}
if (nseg < 1) {
isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg);
mp->error = EFAULT;
return;
}
csio = mp->cmd_token;
isp = mp->isp;
rq = mp->rq;
sbs = (struct isp_sbussoftc *)mp->isp;
dp = &sbs->dmaps[isp_handle_index(rq->req_handle)];
nxti = *mp->nxtip;
if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD);
} else {
bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE);
}
datalen = XS_XFRLEN(csio);
/*
* We're passed an initial partially filled in entry that
* has most fields filled in except for data transfer
* related values.
*
* Our job is to fill in the initial request queue entry and
* then to start allocating and filling in continuation entries
* until we've covered the entire transfer.
*/
if (csio->cdb_len > 12) {
seglim = 0;
} else {
seglim = ISP_RQDSEG;
}
if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
rq->req_flags |= REQFLAG_DATA_IN;
} else {
rq->req_flags |= REQFLAG_DATA_OUT;
}
eseg = dm_segs + nseg;
while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) {
rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr;
rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len;
datalen -= dm_segs->ds_len;
rq->req_seg_count++;
dm_segs++;
}
while (datalen > 0 && dm_segs != eseg) {
u_int16_t onxti;
ispcontreq_t local, *crq = &local, *cqe;
cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti);
onxti = nxti;
nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp));
if (nxti == mp->optr) {
isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++");
mp->error = MUSHERR_NOQENTRIES;
return;
}
rq->req_header.rqs_entry_count++;
MEMZERO((void *)crq, sizeof (*crq));
crq->req_header.rqs_entry_count = 1;
crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
seglim = 0;
while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) {
crq->req_dataseg[seglim].ds_base =
dm_segs->ds_addr;
crq->req_dataseg[seglim].ds_count =
dm_segs->ds_len;
rq->req_seg_count++;
dm_segs++;
seglim++;
datalen -= dm_segs->ds_len;
}
isp_put_cont_req(isp, crq, cqe);
MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN);
}
*mp->nxtip = nxti;
}
static int
isp_sbus_dmasetup(struct ispsoftc *isp, struct ccb_scsiio *csio, ispreq_t *rq,
u_int16_t *nxtip, u_int16_t optr)
{
struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp;
ispreq_t *qep;
bus_dmamap_t *dp = NULL;
mush_t mush, *mp;
void (*eptr)(void *, bus_dma_segment_t *, int, int);
qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx);
eptr = dma2;
if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE ||
(csio->dxfer_len == 0)) {
rq->req_seg_count = 1;
goto mbxsync;
}
/*
* Do a virtual grapevine step to collect info for
* the callback dma allocation that we have to use...
*/
mp = &mush;
mp->isp = isp;
mp->cmd_token = csio;
mp->rq = rq;
mp->nxtip = nxtip;
mp->optr = optr;
mp->error = 0;
if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) {
int error, s;
dp = &sbs->dmaps[isp_handle_index(rq->req_handle)];
s = splsoftvm();
error = bus_dmamap_load(sbs->dmat, *dp,
csio->data_ptr, csio->dxfer_len, eptr, mp, 0);
if (error == EINPROGRESS) {
bus_dmamap_unload(sbs->dmat, *dp);
mp->error = EINVAL;
isp_prt(isp, ISP_LOGERR,
"deferred dma allocation not supported");
} else if (error && mp->error == 0) {
#ifdef DIAGNOSTIC
isp_prt(isp, ISP_LOGERR,
"error %d in dma mapping code", error);
#endif
mp->error = error;
}
splx(s);
} else {
/* Pointer to physical buffer */
struct bus_dma_segment seg;
seg.ds_addr = (bus_addr_t)csio->data_ptr;
seg.ds_len = csio->dxfer_len;
(*eptr)(mp, &seg, 1, 0);
}
} else {
struct bus_dma_segment *segs;
if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) {
isp_prt(isp, ISP_LOGERR,
"Physical segment pointers unsupported");
mp->error = EINVAL;
} else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) {
isp_prt(isp, ISP_LOGERR,
"Virtual segment addresses unsupported");
mp->error = EINVAL;
} else {
/* Just use the segments provided */
segs = (struct bus_dma_segment *) csio->data_ptr;
(*eptr)(mp, segs, csio->sglist_cnt, 0);
}
}
if (mp->error) {
int retval = CMD_COMPLETE;
if (mp->error == MUSHERR_NOQENTRIES) {
retval = CMD_EAGAIN;
} else if (mp->error == EFBIG) {
XS_SETERR(csio, CAM_REQ_TOO_BIG);
} else if (mp->error == EINVAL) {
XS_SETERR(csio, CAM_REQ_INVALID);
} else {
XS_SETERR(csio, CAM_UNREC_HBA_ERROR);
}
return (retval);
}
mbxsync:
switch (rq->req_header.rqs_entry_type) {
case RQSTYPE_REQUEST:
isp_put_request(isp, rq, qep);
break;
case RQSTYPE_CMDONLY:
isp_put_extended_request(isp, (ispextreq_t *)rq,
(ispextreq_t *)qep);
break;
}
return (CMD_QUEUED);
}
static void
isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle)
{
struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp;
bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)];
if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD);
} else {
bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE);
}
bus_dmamap_unload(sbs->dmat, *dp);
}
static void
isp_sbus_reset1(struct ispsoftc *isp)
{
/* enable interrupts */
ENABLE_INTS(isp);
}
static void
isp_sbus_dumpregs(struct ispsoftc *isp, const char *msg)
{
if (msg)
printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg);
else
printf("%s:\n", device_get_nameunit(isp->isp_dev));
printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1));
printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR),
ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA));
printf("risc_hccr=%x\n", ISP_READ(isp, HCCR));
ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n",
ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS),
ISP_READ(isp, CDMA_FIFO_STS));
printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n",
ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS),
ISP_READ(isp, DDMA_FIFO_STS));
printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
ISP_READ(isp, SXP_INTERRUPT),
ISP_READ(isp, SXP_GROSS_ERR),
ISP_READ(isp, SXP_PINS_CTRL));
ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
printf(" mbox regs: %x %x %x %x %x\n",
ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1),
ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3),
ISP_READ(isp, OUTMAILBOX4));
}
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