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freebsd/sys/dev/pst/pst-iop.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

505 lines
15 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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("$FreeBSD$");
#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 = iop_attach;
sc->iop_delayed_attach->ich_arg = 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(void *arg)
{
struct iop_softc *sc;
int i;
sc = arg;
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,
NULL, 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;
}