FreeBSD-5.3/sys/dev/pst/pst-iop.c
/*-
* Copyright (c) 2001,2002,2003 Søren Schmidt <sos@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,
* without modification, immediately at the beginning of the file.
* 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. 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/pst/pst-iop.c,v 1.6 2003/08/24 17:54:17 obrien Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include "dev/pst/pst-iop.h"
struct iop_request {
struct i2o_single_reply *reply;
u_int32_t mfa;
};
/* local vars */
MALLOC_DEFINE(M_PSTIOP, "PSTIOP", "Promise SuperTrak IOP driver");
int
iop_init(struct iop_softc *sc)
{
int mfa, timeout = 10000;
while ((mfa = sc->reg->iqueue) == 0xffffffff && --timeout)
DELAY(1000);
if (!timeout) {
printf("pstiop: no free mfa\n");
return 0;
}
iop_free_mfa(sc, mfa);
sc->reg->oqueue_intr_mask = 0xffffffff;
if (!iop_reset(sc)) {
printf("pstiop: no reset response\n");
return 0;
}
if (!iop_init_outqueue(sc)) {
printf("pstiop: init outbound queue failed\n");
return 0;
}
/* register iop_attach to be run when interrupts are enabled */
if (!(sc->iop_delayed_attach = (struct intr_config_hook *)
malloc(sizeof(struct intr_config_hook),
M_PSTIOP, M_NOWAIT | M_ZERO))) {
printf("pstiop: malloc of delayed attach hook failed\n");
return 0;
}
sc->iop_delayed_attach->ich_func = (void *)iop_attach;
sc->iop_delayed_attach->ich_arg = (void *)sc;
if (config_intrhook_establish(sc->iop_delayed_attach)) {
printf("pstiop: config_intrhook_establish failed\n");
free(sc->iop_delayed_attach, M_PSTIOP);
}
return 1;
}
void
iop_attach(struct iop_softc *sc)
{
int i;
if (sc->iop_delayed_attach) {
config_intrhook_disestablish(sc->iop_delayed_attach);
free(sc->iop_delayed_attach, M_PSTIOP);
sc->iop_delayed_attach = NULL;
}
if (!iop_get_lct(sc)) {
printf("pstiop: get LCT failed\n");
return;
}
/* figure out what devices are here and config as needed */
for (i = 0; sc->lct[i].entry_size == I2O_LCT_ENTRYSIZE; i++) {
#ifdef PSTDEBUG
struct i2o_get_param_reply *reply;
printf("pstiop: LCT entry %d ", i);
printf("class=%04x ", sc->lct[i].class);
printf("sub=%04x ", sc->lct[i].sub_class);
printf("localtid=%04x ", sc->lct[i].local_tid);
printf("usertid=%04x ", sc->lct[i].user_tid);
printf("parentid=%04x\n", sc->lct[i].parent_tid);
if ((reply = iop_get_util_params(sc, sc->lct[i].local_tid,
I2O_PARAMS_OPERATION_FIELD_GET,
I2O_UTIL_DEVICE_IDENTITY_GROUP_NO))) {
struct i2o_device_identity *ident =
(struct i2o_device_identity *)reply->result;
printf("pstiop: vendor=<%.16s> product=<%.16s>\n",
ident->vendor, ident->product);
printf("pstiop: description=<%.16s> revision=<%.8s>\n",
ident->description, ident->revision);
contigfree(reply, PAGE_SIZE, M_PSTIOP);
}
#endif
if (sc->lct[i].user_tid != I2O_TID_NONE &&
sc->lct[i].user_tid != I2O_TID_HOST)
continue;
switch (sc->lct[i].class) {
case I2O_CLASS_DDM:
if (sc->lct[i].sub_class == I2O_SUBCLASS_ISM)
sc->ism = sc->lct[i].local_tid;
break;
case I2O_CLASS_RANDOM_BLOCK_STORAGE:
pst_add_raid(sc, &sc->lct[i]);
break;
}
}
/* setup and enable interrupts */
bus_setup_intr(sc->dev, sc->r_irq, INTR_TYPE_BIO|INTR_ENTROPY|INTR_MPSAFE,
iop_intr, sc, &sc->handle);
sc->reg->oqueue_intr_mask = 0x0;
}
void
iop_intr(void *data)
{
struct iop_softc *sc = (struct iop_softc *)data;
struct i2o_single_reply *reply;
u_int32_t mfa;
/* we might get more than one finished request pr interrupt */
mtx_lock(&sc->mtx);
while (1) {
if ((mfa = sc->reg->oqueue) == 0xffffffff)
if ((mfa = sc->reg->oqueue) == 0xffffffff)
break;
reply = (struct i2o_single_reply *)(sc->obase + (mfa - sc->phys_obase));
/* if this is an event register reply, shout! */
if (reply->function == I2O_UTIL_EVENT_REGISTER) {
struct i2o_util_event_reply_message *event =
(struct i2o_util_event_reply_message *)reply;
printf("pstiop: EVENT!! idx=%08x data=%08x\n",
event->event_mask, event->event_data[0]);
break;
}
/* if reply is a failurenotice we need to free the original mfa */
if (reply->message_flags & I2O_MESSAGE_FLAGS_FAIL)
iop_free_mfa(sc,((struct i2o_fault_reply *)(reply))->preserved_mfa);
/* reply->initiator_context points to the service routine */
((void (*)(struct iop_softc *, u_int32_t, struct i2o_single_reply *))
(reply->initiator_context))(sc, mfa, reply);
}
mtx_unlock(&sc->mtx);
}
int
iop_reset(struct iop_softc *sc)
{
struct i2o_exec_iop_reset_message *msg;
int mfa, timeout = 5000;
volatile u_int32_t reply = 0;
mfa = iop_get_mfa(sc);
msg = (struct i2o_exec_iop_reset_message *)(sc->ibase + mfa);
bzero(msg, sizeof(struct i2o_exec_iop_reset_message));
msg->version_offset = 0x1;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_exec_iop_reset_message) >> 2;
msg->target_address = I2O_TID_IOP;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_EXEC_IOP_RESET;
msg->status_word_low_addr = vtophys(&reply);
msg->status_word_high_addr = 0;
sc->reg->iqueue = mfa;
while (--timeout && !reply)
DELAY(1000);
/* wait for iqueue ready */
timeout = 10000;
while ((mfa = sc->reg->iqueue) == 0xffffffff && --timeout)
DELAY(1000);
iop_free_mfa(sc, mfa);
return reply;
}
int
iop_init_outqueue(struct iop_softc *sc)
{
struct i2o_exec_init_outqueue_message *msg;
int i, mfa, timeout = 5000;
volatile u_int32_t reply = 0;
if (!(sc->obase = contigmalloc(I2O_IOP_OUTBOUND_FRAME_COUNT *
I2O_IOP_OUTBOUND_FRAME_SIZE,
M_PSTIOP, M_NOWAIT,
0x00010000, 0xFFFFFFFF,
PAGE_SIZE, 0))) {
printf("pstiop: contigmalloc of outqueue buffers failed!\n");
return 0;
}
sc->phys_obase = vtophys(sc->obase);
mfa = iop_get_mfa(sc);
msg = (struct i2o_exec_init_outqueue_message *)(sc->ibase + mfa);
bzero(msg, sizeof(struct i2o_exec_init_outqueue_message));
msg->version_offset = 0x61;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_exec_init_outqueue_message) >> 2;
msg->target_address = I2O_TID_IOP;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_EXEC_OUTBOUND_INIT;
msg->host_pagesize = PAGE_SIZE;
msg->init_code = 0x00; /* SOS XXX should be 0x80 == OS */
msg->queue_framesize = I2O_IOP_OUTBOUND_FRAME_SIZE / sizeof(u_int32_t);
msg->sgl[0].flags = I2O_SGL_SIMPLE | I2O_SGL_END | I2O_SGL_EOB;
msg->sgl[0].count = sizeof(reply);
msg->sgl[0].phys_addr[0] = vtophys(&reply);
msg->sgl[1].flags = I2O_SGL_END | I2O_SGL_EOB;
msg->sgl[1].count = 1;
msg->sgl[1].phys_addr[0] = 0;
sc->reg->iqueue = mfa;
/* wait for init to complete */
while (--timeout && reply != I2O_EXEC_OUTBOUND_INIT_COMPLETE)
DELAY(1000);
if (!timeout) {
printf("pstiop: timeout waiting for init-complete response\n");
iop_free_mfa(sc, mfa);
return 0;
}
/* now init our oqueue bufs */
for (i = 0; i < I2O_IOP_OUTBOUND_FRAME_COUNT; i++) {
sc->reg->oqueue = sc->phys_obase + (i * I2O_IOP_OUTBOUND_FRAME_SIZE);
DELAY(1000);
}
return 1;
}
int
iop_get_lct(struct iop_softc *sc)
{
struct i2o_exec_get_lct_message *msg;
struct i2o_get_lct_reply *reply;
int mfa;
#define ALLOCSIZE (PAGE_SIZE + (256 * sizeof(struct i2o_lct_entry)))
if (!(reply = contigmalloc(ALLOCSIZE, M_PSTIOP, M_NOWAIT | M_ZERO,
0x00010000, 0xFFFFFFFF, PAGE_SIZE, 0)))
return 0;
mfa = iop_get_mfa(sc);
msg = (struct i2o_exec_get_lct_message *)(sc->ibase + mfa);
bzero(msg, sizeof(struct i2o_exec_get_lct_message));
msg->version_offset = 0x61;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_exec_get_lct_message) >> 2;
msg->target_address = I2O_TID_IOP;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_EXEC_LCT_NOTIFY;
msg->class = I2O_CLASS_MATCH_ANYCLASS;
msg->last_change_id = 0;
msg->sgl.flags = I2O_SGL_SIMPLE | I2O_SGL_END | I2O_SGL_EOB;
msg->sgl.count = ALLOCSIZE;
msg->sgl.phys_addr[0] = vtophys(reply);
if (iop_queue_wait_msg(sc, mfa, (struct i2o_basic_message *)msg)) {
contigfree(reply, ALLOCSIZE, M_PSTIOP);
return 0;
}
if (!(sc->lct = malloc(reply->table_size * sizeof(struct i2o_lct_entry),
M_PSTIOP, M_NOWAIT | M_ZERO))) {
contigfree(reply, ALLOCSIZE, M_PSTIOP);
return 0;
}
bcopy(&reply->entry[0], sc->lct,
reply->table_size * sizeof(struct i2o_lct_entry));
sc->lct_count = reply->table_size;
contigfree(reply, ALLOCSIZE, M_PSTIOP);
return 1;
}
struct i2o_get_param_reply *
iop_get_util_params(struct iop_softc *sc, int target, int operation, int group)
{
struct i2o_util_get_param_message *msg;
struct i2o_get_param_operation *param;
struct i2o_get_param_reply *reply;
int mfa;
if (!(param = contigmalloc(PAGE_SIZE, M_PSTIOP, M_NOWAIT | M_ZERO,
0x00010000, 0xFFFFFFFF, PAGE_SIZE, 0)))
return NULL;
if (!(reply = contigmalloc(PAGE_SIZE, M_PSTIOP, M_NOWAIT | M_ZERO,
0x00010000, 0xFFFFFFFF, PAGE_SIZE, 0)))
return NULL;
mfa = iop_get_mfa(sc);
msg = (struct i2o_util_get_param_message *)(sc->ibase + mfa);
bzero(msg, sizeof(struct i2o_util_get_param_message));
msg->version_offset = 0x51;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_util_get_param_message) >> 2;
msg->target_address = target;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_UTIL_PARAMS_GET;
msg->operation_flags = 0;
param->operation_count = 1;
param->operation[0].operation = operation;
param->operation[0].group = group;
param->operation[0].field_count = 0xffff;
msg->sgl[0].flags = I2O_SGL_SIMPLE | I2O_SGL_DIR | I2O_SGL_EOB;
msg->sgl[0].count = sizeof(struct i2o_get_param_operation);
msg->sgl[0].phys_addr[0] = vtophys(param);
msg->sgl[1].flags = I2O_SGL_SIMPLE | I2O_SGL_END | I2O_SGL_EOB;
msg->sgl[1].count = PAGE_SIZE;
msg->sgl[1].phys_addr[0] = vtophys(reply);
if (iop_queue_wait_msg(sc, mfa, (struct i2o_basic_message *)msg) ||
reply->error_info_size) {
contigfree(reply, PAGE_SIZE, M_PSTIOP);
reply = NULL;
}
contigfree(param, PAGE_SIZE, M_PSTIOP);
return reply;
}
u_int32_t
iop_get_mfa(struct iop_softc *sc)
{
u_int32_t mfa;
int timeout = 10000;
while ((mfa = sc->reg->iqueue) == 0xffffffff && timeout) {
DELAY(1000);
timeout--;
}
if (!timeout)
printf("pstiop: no free mfa\n");
return mfa;
}
void
iop_free_mfa(struct iop_softc *sc, int mfa)
{
struct i2o_basic_message *msg = (struct i2o_basic_message *)(sc->ibase+mfa);
bzero(msg, sizeof(struct i2o_basic_message));
msg->version = 0x01;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_basic_message) >> 2;
msg->target_address = I2O_TID_IOP;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_UTIL_NOP;
sc->reg->iqueue = mfa;
}
static void
iop_done(struct iop_softc *sc, u_int32_t mfa, struct i2o_single_reply *reply)
{
struct iop_request *request =
(struct iop_request *)reply->transaction_context;
request->reply = reply;
request->mfa = mfa;
wakeup(request);
}
int
iop_queue_wait_msg(struct iop_softc *sc, int mfa, struct i2o_basic_message *msg)
{
struct i2o_single_reply *reply;
struct iop_request request;
u_int32_t out_mfa;
int status, timeout = 10000;
mtx_lock(&sc->mtx);
if (!(sc->reg->oqueue_intr_mask & 0x08)) {
msg->transaction_context = (u_int32_t)&request;
msg->initiator_context = (u_int32_t)iop_done;
sc->reg->iqueue = mfa;
if (msleep(&request, &sc->mtx, PRIBIO, "pstwt", 10 * hz)) {
printf("pstiop: timeout waiting for message response\n");
iop_free_mfa(sc, mfa);
mtx_unlock(&sc->mtx);
return -1;
}
status = request.reply->status;
sc->reg->oqueue = request.mfa;
}
else {
sc->reg->iqueue = mfa;
while (--timeout && ((out_mfa = sc->reg->oqueue) == 0xffffffff))
DELAY(1000);
if (!timeout) {
printf("pstiop: timeout waiting for message response\n");
iop_free_mfa(sc, mfa);
mtx_unlock(&sc->mtx);
return -1;
}
reply = (struct i2o_single_reply *)(sc->obase+(out_mfa-sc->phys_obase));
status = reply->status;
sc->reg->oqueue = out_mfa;
}
mtx_unlock(&sc->mtx);
return status;
}
int
iop_create_sgl(struct i2o_basic_message *msg, caddr_t data, int count, int dir)
{
struct i2o_sgl *sgl = (struct i2o_sgl *)((int32_t *)msg + msg->offset);
u_int32_t sgl_count, sgl_phys;
int i = 0;
if (((uintptr_t)data & 3) || (count & 3)) {
printf("pstiop: non aligned DMA transfer attempted\n");
return 0;
}
if (!count) {
printf("pstiop: zero length DMA transfer attempted\n");
return 0;
}
sgl_count = min(count, (PAGE_SIZE - ((uintptr_t)data & PAGE_MASK)));
sgl_phys = vtophys(data);
sgl->flags = dir | I2O_SGL_PAGELIST | I2O_SGL_EOB | I2O_SGL_END;
sgl->count = count;
data += sgl_count;
count -= sgl_count;
while (count) {
sgl->phys_addr[i] = sgl_phys;
sgl_phys = vtophys(data);
data += min(count, PAGE_SIZE);
count -= min(count, PAGE_SIZE);
if (++i >= I2O_SGL_MAX_SEGS) {
printf("pstiop: too many segments in SGL\n");
return 0;
}
}
sgl->phys_addr[i] = sgl_phys;
msg->message_size += i;
return 1;
}