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/*
* Copyright (c) 2010, LSI Corp.
* All rights reserved.
* Author : Manjunath Ranganathaiah
* Support: freebsdraid@lsi.com
*
* 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. Neither the name of the <ORGANIZATION> nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*
* $FreeBSD: release/9.1.0/sys/dev/tws/tws_hdm.c 226026 2011-10-04 21:40:25Z delphij $
*/
#include <dev/tws/tws.h>
#include <dev/tws/tws_services.h>
#include <dev/tws/tws_hdm.h>
int tws_use_32bit_sgls=0;
extern u_int64_t mfa_base;
extern struct tws_request *tws_get_request(struct tws_softc *sc,
u_int16_t type);
extern void tws_q_insert_tail(struct tws_softc *sc, struct tws_request *req,
u_int8_t q_type );
extern struct tws_request * tws_q_remove_request(struct tws_softc *sc,
struct tws_request *req, u_int8_t q_type );
extern void tws_cmd_complete(struct tws_request *req);
extern void tws_print_stats(void *arg);
extern int tws_send_scsi_cmd(struct tws_softc *sc, int cmd);
extern int tws_set_param(struct tws_softc *sc, u_int32_t table_id,
u_int32_t param_id, u_int32_t param_size, void *data);
extern int tws_get_param(struct tws_softc *sc, u_int32_t table_id,
u_int32_t param_id, u_int32_t param_size, void *data);
extern void tws_reset(void *arg);
int tws_init_connect(struct tws_softc *sc, u_int16_t mc);
int tws_init_ctlr(struct tws_softc *sc);
int tws_submit_command(struct tws_softc *sc, struct tws_request *req);
void tws_nop_cmd(void *arg);
u_int16_t tws_poll4_response(struct tws_softc *sc, u_int64_t *mfa);
boolean tws_get_response(struct tws_softc *sc, u_int16_t *req_id,
u_int64_t *mfa);
boolean tws_ctlr_ready(struct tws_softc *sc);
void tws_turn_on_interrupts(struct tws_softc *sc);
void tws_turn_off_interrupts(struct tws_softc *sc);
boolean tws_ctlr_reset(struct tws_softc *sc);
void tws_assert_soft_reset(struct tws_softc *sc);
int tws_send_generic_cmd(struct tws_softc *sc, u_int8_t opcode);
void tws_fetch_aen(void *arg);
void tws_disable_db_intr(struct tws_softc *sc);
void tws_enable_db_intr(struct tws_softc *sc);
void tws_aen_synctime_with_host(struct tws_softc *sc);
void tws_init_obfl_q(struct tws_softc *sc);
void tws_display_ctlr_info(struct tws_softc *sc);
int
tws_init_ctlr(struct tws_softc *sc)
{
u_int64_t reg;
u_int32_t regh, regl;
TWS_TRACE_DEBUG(sc, "entry", sc, sc->is64bit);
sc->obfl_q_overrun = false;
if ( tws_init_connect(sc, tws_queue_depth) )
{
TWS_TRACE_DEBUG(sc, "initConnect failed", 0, sc->is64bit);
return(FAILURE);
}
while( 1 ) {
regh = tws_read_reg(sc, TWS_I2O0_IOPOBQPH, 4);
regl = tws_read_reg(sc, TWS_I2O0_IOPOBQPL, 4);
reg = (((u_int64_t)regh) << 32) | regl;
TWS_TRACE_DEBUG(sc, "host outbound clenup",reg, regl);
if ( regh == TWS_FIFO_EMPTY32 )
break;
}
tws_init_obfl_q(sc);
tws_display_ctlr_info(sc);
tws_write_reg(sc, TWS_I2O0_HOBDBC, ~0, 4);
tws_turn_on_interrupts(sc);
return(SUCCESS);
}
void
tws_init_obfl_q(struct tws_softc *sc)
{
int i=0;
u_int64_t paddr;
u_int32_t paddrh, paddrl, status;
TWS_TRACE_DEBUG(sc, "entry", 0, sc->obfl_q_overrun);
while ( i < tws_queue_depth ) {
paddr = sc->sense_bufs[i].hdr_pkt_phy;
paddrh = (u_int32_t)( paddr>>32);
paddrl = (u_int32_t) paddr;
tws_write_reg(sc, TWS_I2O0_HOBQPH, paddrh, 4);
tws_write_reg(sc, TWS_I2O0_HOBQPL, paddrl, 4);
status = tws_read_reg(sc, TWS_I2O0_STATUS, 4);
if ( status & TWS_BIT13 ) {
device_printf(sc->tws_dev, "OBFL Overrun\n");
sc->obfl_q_overrun = true;
break;
}
i++;
}
if ( i == tws_queue_depth )
sc->obfl_q_overrun = false;
}
int
tws_init_connect(struct tws_softc *sc, u_int16_t mcreadits )
{
struct tws_request *req;
struct tws_cmd_init_connect *initc;
u_int16_t reqid;
u_int64_t mfa;
TWS_TRACE_DEBUG(sc, "entry", 0, mcreadits);
#if 0
req = tws_get_request(sc, TWS_REQ_TYPE_INTERNAL_CMD);
#else // 0
req = &sc->reqs[TWS_REQ_TYPE_INTERNAL_CMD];
bzero(&req->cmd_pkt->cmd, sizeof(struct tws_command_apache));
req->data = NULL;
req->length = 0;
req->type = TWS_REQ_TYPE_INTERNAL_CMD;
req->flags = TWS_DIR_UNKNOWN;
req->error_code = TWS_REQ_RET_INVALID;
req->cb = NULL;
req->ccb_ptr = NULL;
req->thandle.callout = NULL;
req->next = req->prev = NULL;
req->state = TWS_REQ_STATE_BUSY;
#endif // 0
if ( req == NULL ) {
TWS_TRACE_DEBUG(sc, "no requests", 0, 0);
// device_printf(sc->tws_dev, "No requests for initConnect\n");
return(FAILURE);
}
tws_swap16(0xbeef); /* just for test */
tws_swap32(0xdeadbeef); /* just for test */
tws_swap64(0xdeadbeef); /* just for test */
initc = &(req->cmd_pkt->cmd.pkt_g.init_connect);
/* req->cmd_pkt->hdr.header_desc.size_header = 128; */
initc->res1__opcode =
BUILD_RES__OPCODE(0, TWS_FW_CMD_INIT_CONNECTION);
initc->size = 6;
initc->request_id = req->request_id;
initc->message_credits = mcreadits;
initc->features |= TWS_BIT_EXTEND;
if ( sc->is64bit && !tws_use_32bit_sgls )
initc->features |= TWS_64BIT_SG_ADDRESSES;
/* assuming set features is always on */
initc->size = 6;
initc->fw_srl = sc->cinfo.working_srl = TWS_CURRENT_FW_SRL;
initc->fw_arch_id = 0;
initc->fw_branch = sc->cinfo.working_branch = 0;
initc->fw_build = sc->cinfo.working_build = 0;
req->error_code = tws_submit_command(sc, req);
reqid = tws_poll4_response(sc, &mfa);
if ( reqid != TWS_INVALID_REQID && reqid == req->request_id ) {
sc->cinfo.fw_on_ctlr_srl = initc->fw_srl;
sc->cinfo.fw_on_ctlr_branch = initc->fw_branch;
sc->cinfo.fw_on_ctlr_build = initc->fw_build;
sc->stats.reqs_out++;
req->state = TWS_REQ_STATE_FREE;
}
else {
/*
* REVISIT::If init connect fails we need to reset the ctlr
* and try again?
*/
TWS_TRACE(sc, "unexpected req_id ", reqid, 0);
TWS_TRACE(sc, "INITCONNECT FAILED", reqid, 0);
return(FAILURE);
}
return(SUCCESS);
}
void
tws_display_ctlr_info(struct tws_softc *sc)
{
uint8_t fw_ver[16], bios_ver[16], ctlr_model[16], num_phys=0;
uint32_t error[4];
error[0] = tws_get_param(sc, TWS_PARAM_PHYS_TABLE,
TWS_PARAM_CONTROLLER_PHYS_COUNT, 1, &num_phys);
error[1] = tws_get_param(sc, TWS_PARAM_VERSION_TABLE,
TWS_PARAM_VERSION_FW, 16, fw_ver);
error[2] = tws_get_param(sc, TWS_PARAM_VERSION_TABLE,
TWS_PARAM_VERSION_BIOS, 16, bios_ver);
error[3] = tws_get_param(sc, TWS_PARAM_VERSION_TABLE,
TWS_PARAM_CTLR_MODEL, 16, ctlr_model);
if ( !error[0] && !error[1] && !error[2] && !error[3] ) {
device_printf( sc->tws_dev,
"Controller details: Model %.16s, %d Phys, Firmware %.16s, BIOS %.16s\n",
ctlr_model, num_phys, fw_ver, bios_ver);
}
}
int
tws_send_generic_cmd(struct tws_softc *sc, u_int8_t opcode)
{
struct tws_request *req;
struct tws_cmd_generic *cmd;
TWS_TRACE_DEBUG(sc, "entry", sc, opcode);
req = tws_get_request(sc, TWS_REQ_TYPE_INTERNAL_CMD);
if ( req == NULL ) {
TWS_TRACE_DEBUG(sc, "no requests", 0, 0);
return(FAILURE);
}
cmd = &(req->cmd_pkt->cmd.pkt_g.generic);
bzero(cmd, sizeof(struct tws_cmd_generic));
/* req->cmd_pkt->hdr.header_desc.size_header = 128; */
req->cb = tws_cmd_complete;
cmd->sgl_off__opcode = BUILD_RES__OPCODE(0, opcode);
cmd->size = 2;
cmd->request_id = req->request_id;
cmd->host_id__unit = 0;
cmd->status = 0;
cmd->flags = 0;
cmd->count = 0;
req->error_code = tws_submit_command(sc, req);
return(SUCCESS);
}
int
tws_submit_command(struct tws_softc *sc, struct tws_request *req)
{
u_int32_t regl, regh;
u_int64_t mfa=0;
/*
* mfa register read and write must be in order.
* Get the io_lock to protect against simultinous
* passthru calls
*/
mtx_lock(&sc->io_lock);
if ( sc->obfl_q_overrun ) {
tws_init_obfl_q(sc);
}
#ifdef TWS_PULL_MODE_ENABLE
regh = (u_int32_t)(req->cmd_pkt_phy >> 32);
/* regh = regh | TWS_MSG_ACC_MASK; */
mfa = regh;
mfa = mfa << 32;
regl = (u_int32_t)req->cmd_pkt_phy;
regl = regl | TWS_BIT0;
mfa = mfa | regl;
#else
regh = tws_read_reg(sc, TWS_I2O0_HIBQPH, 4);
mfa = regh;
mfa = mfa << 32;
regl = tws_read_reg(sc, TWS_I2O0_HIBQPL, 4);
mfa = mfa | regl;
#endif
mtx_unlock(&sc->io_lock);
if ( mfa == TWS_FIFO_EMPTY ) {
TWS_TRACE_DEBUG(sc, "inbound fifo empty", mfa, 0);
/*
* Generaly we should not get here.
* If the fifo was empty we can't do any thing much
* retry later
*/
return(TWS_REQ_RET_PEND_NOMFA);
}
#ifndef TWS_PULL_MODE_ENABLE
for (int i=mfa; i<(sizeof(struct tws_command_packet)+ mfa -
sizeof( struct tws_command_header)); i++) {
bus_space_write_1(sc->bus_mfa_tag, sc->bus_mfa_handle,i,
((u_int8_t *)&req->cmd_pkt->cmd)[i-mfa]);
}
#endif
if ( req->type == TWS_REQ_TYPE_SCSI_IO ) {
mtx_lock(&sc->q_lock);
tws_q_insert_tail(sc, req, TWS_BUSY_Q);
mtx_unlock(&sc->q_lock);
}
/*
* mfa register read and write must be in order.
* Get the io_lock to protect against simultinous
* passthru calls
*/
mtx_lock(&sc->io_lock);
tws_write_reg(sc, TWS_I2O0_HIBQPH, regh, 4);
tws_write_reg(sc, TWS_I2O0_HIBQPL, regl, 4);
sc->stats.reqs_in++;
mtx_unlock(&sc->io_lock);
return(TWS_REQ_RET_SUBMIT_SUCCESS);
}
/*
* returns true if the respose was available othewise, false.
* In the case of error the arg mfa will contain the address and
* req_id will be TWS_INVALID_REQID
*/
boolean
tws_get_response(struct tws_softc *sc, u_int16_t *req_id, u_int64_t *mfa)
{
u_int64_t out_mfa=0, val=0;
struct tws_outbound_response out_res;
*req_id = TWS_INVALID_REQID;
out_mfa = (u_int64_t)tws_read_reg(sc, TWS_I2O0_HOBQPH, 4);
if ( out_mfa == TWS_FIFO_EMPTY32 ) {
return(false);
}
out_mfa = out_mfa << 32;
val = tws_read_reg(sc, TWS_I2O0_HOBQPL, 4);
out_mfa = out_mfa | val;
out_res = *(struct tws_outbound_response *)&out_mfa;
if ( !out_res.not_mfa ) {
*mfa = out_mfa;
return(true);
} else {
*req_id = out_res.request_id;
}
return(true);
}
u_int16_t
tws_poll4_response(struct tws_softc *sc, u_int64_t *mfa)
{
u_int16_t req_id;
time_t endt;
endt = TWS_LOCAL_TIME + TWS_POLL_TIMEOUT;
do {
if(tws_get_response(sc, &req_id, mfa)) {
if ( req_id == TWS_INVALID_REQID ) {
TWS_TRACE_DEBUG(sc, "invalid req_id", 0, req_id);
return(TWS_INVALID_REQID);
}
return(req_id);
}
} while (TWS_LOCAL_TIME <= endt);
TWS_TRACE_DEBUG(sc, "poll timeout", 0, 0);
return(TWS_INVALID_REQID);
}
boolean
tws_ctlr_ready(struct tws_softc *sc)
{
u_int32_t reg;
reg = tws_read_reg(sc, TWS_I2O0_SCRPD3, 4);
if ( reg & TWS_BIT13 )
return(true);
else
return(false);
}
void
tws_turn_on_interrupts(struct tws_softc *sc)
{
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
/* turn on responce and db interrupt only */
tws_write_reg(sc, TWS_I2O0_HIMASK, TWS_BIT0, 4);
}
void
tws_turn_off_interrupts(struct tws_softc *sc)
{
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
tws_write_reg(sc, TWS_I2O0_HIMASK, ~0, 4);
}
void
tws_disable_db_intr(struct tws_softc *sc)
{
u_int32_t reg;
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
reg = tws_read_reg(sc, TWS_I2O0_HIMASK, 4);
reg = reg | TWS_BIT2;
tws_write_reg(sc, TWS_I2O0_HIMASK, reg, 4);
}
void
tws_enable_db_intr(struct tws_softc *sc)
{
u_int32_t reg;
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
reg = tws_read_reg(sc, TWS_I2O0_HIMASK, 4);
reg = reg & ~TWS_BIT2;
tws_write_reg(sc, TWS_I2O0_HIMASK, reg, 4);
}
boolean
tws_ctlr_reset(struct tws_softc *sc)
{
u_int32_t reg;
time_t endt;
/* int i=0; */
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
tws_assert_soft_reset(sc);
do {
reg = tws_read_reg(sc, TWS_I2O0_SCRPD3, 4);
} while ( reg & TWS_BIT13 );
endt = TWS_LOCAL_TIME + TWS_RESET_TIMEOUT;
do {
if(tws_ctlr_ready(sc))
return(true);
} while (TWS_LOCAL_TIME <= endt);
return(false);
}
void
tws_assert_soft_reset(struct tws_softc *sc)
{
u_int32_t reg;
reg = tws_read_reg(sc, TWS_I2O0_HIBDB, 4);
TWS_TRACE_DEBUG(sc, "in bound door bell read ", reg, TWS_I2O0_HIBDB);
tws_write_reg(sc, TWS_I2O0_HIBDB, reg | TWS_BIT8, 4);
}
void
tws_fetch_aen(void *arg)
{
struct tws_softc *sc = (struct tws_softc *)arg;
int error = 0;
TWS_TRACE_DEBUG(sc, "entry", 0, 0);
if ((error = tws_send_scsi_cmd(sc, 0x03 /* REQUEST_SENSE */))) {
TWS_TRACE_DEBUG(sc, "aen fetch send in progress", 0, 0);
}
}
void
tws_aen_synctime_with_host(struct tws_softc *sc)
{
int error;
long int sync_time;
TWS_TRACE_DEBUG(sc, "entry", sc, 0);
sync_time = (TWS_LOCAL_TIME - (3 * 86400)) % 604800;
TWS_TRACE_DEBUG(sc, "sync_time,ts", sync_time, time_second);
TWS_TRACE_DEBUG(sc, "utc_offset", utc_offset(), 0);
error = tws_set_param(sc, TWS_PARAM_TIME_TABLE, TWS_PARAM_TIME_SCHED_TIME,
4, &sync_time);
if ( error )
TWS_TRACE_DEBUG(sc, "set param failed", sync_time, error);
}
TUNABLE_INT("hw.tws.use_32bit_sgls", &tws_use_32bit_sgls);