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freebsd-dev/sys/dev/advansys/advlib.c
Jordan K. Hubbard 1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$ 
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00

1668 lines
43 KiB
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/*
* Low level routines for the Advanced Systems Inc. SCSI controllers chips
*
* Copyright (c) 1996 Justin T. Gibbs.
* 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 immediately at the beginning of the file, without modification,
* 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. 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.
*
* $FreeBSD$
*/
/*
* Ported from:
* advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
*
* Copyright (c) 1995-1996 Advanced System Products, Inc.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that redistributions of source
* code retain the above copyright notice and this comment without
* modification.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/clock.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_message.h>
#include <scsi/scsi_disk.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <dev/advansys/advlib.h>
#include <dev/advansys/advmcode.h>
/*
* Allowable periods in ns
*/
u_int8_t adv_sdtr_period_tbl[] =
{
25,
30,
35,
40,
50,
60,
70,
85
};
struct sdtr_xmsg {
u_int8_t msg_type;
u_int8_t msg_len;
u_int8_t msg_req;
u_int8_t xfer_period;
u_int8_t req_ack_offset;
u_int8_t res;
};
/*
* Some of the early PCI adapters have problems with
* async transfers. Instead try to use an offset of
* 1.
*/
#define ASYN_SDTR_DATA_FIX 0x41
/* LRAM routines */
static void adv_read_lram_16_multi __P((struct adv_softc *adv, u_int16_t s_addr,
u_int16_t *buffer, int count));
static void adv_write_lram_16_multi __P((struct adv_softc *adv,
u_int16_t s_addr, u_int16_t *buffer,
int count));
static void adv_mset_lram_16 __P((struct adv_softc *adv,
u_int16_t s_addr, u_int16_t set_value,
int count));
static u_int32_t adv_msum_lram_16 __P((struct adv_softc *adv, u_int16_t s_addr, int count));
static int adv_write_and_verify_lram_16 __P((struct adv_softc *adv,
u_int16_t addr, u_int16_t value));
static u_int32_t adv_read_lram_32 __P((struct adv_softc *adv, u_int16_t addr));
static void adv_write_lram_32 __P((struct adv_softc *adv, u_int16_t addr,
u_int32_t value));
static void adv_write_lram_32_multi __P((struct adv_softc *adv, u_int16_t s_addr,
u_int32_t *buffer, int count));
/* EEPROM routines */
static u_int16_t adv_read_eeprom_16 __P((struct adv_softc *adv, u_int8_t addr));
static u_int16_t adv_write_eeprom_16 __P((struct adv_softc *adv, u_int8_t addr, u_int16_t value));
static int adv_write_eeprom_cmd_reg __P((struct adv_softc *adv, u_int8_t cmd_reg));
static int adv_set_eeprom_config_once __P((struct adv_softc *adv,
struct adv_eeprom_config *eeprom_config));
/* Initialization */
static u_int32_t adv_load_microcode __P((struct adv_softc *adv,
u_int16_t s_addr, u_int16_t *mcode_buf, u_int16_t mcode_size));
static void adv_init_lram __P((struct adv_softc *adv));
static int adv_init_microcode_var __P((struct adv_softc *adv));
static void adv_init_qlink_var __P((struct adv_softc *adv));
/* Interrupts */
static void adv_disable_interrupt __P((struct adv_softc *adv));
static void adv_enable_interrupt __P((struct adv_softc *adv));
static void adv_toggle_irq_act __P((struct adv_softc *adv));
/* Chip Control */
#if UNUSED
static void adv_start_execution __P((struct adv_softc *adv));
#endif
static int adv_start_chip __P((struct adv_softc *adv));
static int adv_stop_chip __P((struct adv_softc *adv));
static void adv_set_chip_ih __P((struct adv_softc *adv,
u_int16_t ins_code));
static void adv_set_bank __P((struct adv_softc *adv, u_int8_t bank));
#if UNUSED
static u_int8_t adv_get_chip_scsi_ctrl __P((struct adv_softc *adv));
#endif
/* Queue handling and execution */
static int adv_sgcount_to_qcount __P((int sgcount));
static void adv_get_q_info __P((struct adv_softc *adv, u_int16_t s_addr, u_int16_t *inbuf,
int words));
static u_int adv_get_num_free_queues __P((struct adv_softc *adv,
u_int8_t n_qs));
static u_int8_t adv_alloc_free_queues __P((struct adv_softc *adv,
u_int8_t free_q_head,
u_int8_t n_free_q));
static u_int8_t adv_alloc_free_queue __P((struct adv_softc *adv,
u_int8_t free_q_head));
static int adv_send_scsi_queue __P((struct adv_softc *adv,
struct adv_scsi_q *scsiq,
u_int8_t n_q_required));
static void adv_put_ready_sg_list_queue __P((struct adv_softc *adv,
struct adv_scsi_q *scsiq,
u_int8_t q_no));
static void adv_put_ready_queue __P((struct adv_softc *adv,
struct adv_scsi_q *scsiq,
u_int8_t q_no));
static void adv_put_scsiq __P((struct adv_softc *adv, u_int16_t s_addr,
u_int16_t *buffer, int words));
/* SDTR */
static u_int8_t adv_msgout_sdtr __P((struct adv_softc *adv,
u_int8_t sdtr_period,
u_int8_t sdtr_offset));
static u_int8_t adv_get_card_sync_setting __P((u_int8_t period,
u_int8_t offset));
static void adv_set_chip_sdtr __P((struct adv_softc *adv,
u_int8_t sdtr_data,
u_int8_t tid_no));
/* Exported functions first */
u_int8_t
adv_read_lram_8(adv, addr)
struct adv_softc *adv;
u_int16_t addr;
{
u_int8_t byte_data;
u_int16_t word_data;
/*
* LRAM is accessed on 16bit boundaries.
*/
ADV_OUTW(adv, ADV_LRAM_ADDR, addr & 0xFFFE);
word_data = ADV_INW(adv, ADV_LRAM_DATA);
if (addr & 1) {
#if BYTE_ORDER == BIG_ENDIAN
byte_data = (u_int8_t)(word_data & 0xFF);
#else
byte_data = (u_int8_t)((word_data >> 8) & 0xFF);
#endif
} else {
#if BYTE_ORDER == BIG_ENDIAN
byte_data = (u_int8_t)((word_data >> 8) & 0xFF);
#else
byte_data = (u_int8_t)(word_data & 0xFF);
#endif
}
return (byte_data);
}
void
adv_write_lram_8(adv, addr, value)
struct adv_softc *adv;
u_int16_t addr;
u_int8_t value;
{
u_int16_t word_data;
word_data = adv_read_lram_16(adv, addr & 0xFFFE);
if (addr & 1) {
word_data &= 0x00FF;
word_data |= (((u_int8_t)value << 8) & 0xFF00);
} else {
word_data &= 0xFF00;
word_data |= ((u_int8_t)value & 0x00FF);
}
adv_write_lram_16(adv, addr & 0xFFFE, word_data);
}
u_int16_t
adv_read_lram_16(adv, addr)
struct adv_softc *adv;
u_int16_t addr;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
return (ADV_INW(adv, ADV_LRAM_DATA));
}
void
adv_write_lram_16(adv, addr, value)
struct adv_softc *adv;
u_int16_t addr;
u_int16_t value;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
ADV_OUTW(adv, ADV_LRAM_DATA, value);
}
/*
* Return the fully qualified board type for the adapter.
* The chip_revision must be set before this function is called.
*/
void
adv_get_board_type(adv)
struct adv_softc *adv;
{
if ((adv->chip_version >= ADV_CHIP_MIN_VER_VL) &&
(adv->chip_version <= ADV_CHIP_MAX_VER_VL)) {
if (((adv->iobase & 0x0C30) == 0x0C30) ||
((adv->iobase & 0x0C50) == 0x0C50)) {
adv->type = ADV_EISA;
} else
adv->type = ADV_VL;
} else if ((adv->chip_version >= ADV_CHIP_MIN_VER_ISA) &&
(adv->chip_version <= ADV_CHIP_MAX_VER_ISA)) {
if (adv->chip_version >= ADV_CHIP_MIN_VER_ISA_PNP) {
adv->type = ADV_ISAPNP;
} else
adv->type = ADV_ISA;
} else if ((adv->chip_version >= ADV_CHIP_MIN_VER_PCI) &&
(adv->chip_version <= ADV_CHIP_MAX_VER_PCI)) {
adv->type = ADV_PCI;
} else
panic("adv_get_board_type: Unknown board type encountered");
}
u_int16_t
adv_get_eeprom_config(adv, eeprom_config)
struct adv_softc *adv;
struct adv_eeprom_config *eeprom_config;
{
u_int16_t sum;
u_int16_t *wbuf;
u_int8_t cfg_beg;
u_int8_t cfg_end;
u_int8_t s_addr;
wbuf = (u_int16_t *)eeprom_config;
sum = 0;
for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
*wbuf = adv_read_eeprom_16(adv, s_addr);
sum += *wbuf;
}
if (adv->type & ADV_VL) {
cfg_beg = ADV_EEPROM_CFG_BEG_VL;
cfg_end = ADV_EEPROM_MAX_ADDR_VL;
} else {
cfg_beg = ADV_EEPROM_CFG_BEG;
cfg_end = ADV_EEPROM_MAX_ADDR;
}
for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
*wbuf = adv_read_eeprom_16(adv, s_addr);
sum += *wbuf;
#if ADV_DEBUG_EEPROM
printf("Addr 0x%x: 0x%04x\n", s_addr, *wbuf);
#endif
}
*wbuf = adv_read_eeprom_16(adv, s_addr);
return (sum);
}
int
adv_set_eeprom_config(adv, eeprom_config)
struct adv_softc *adv;
struct adv_eeprom_config *eeprom_config;
{
int retry;
retry = 0;
while (1) {
if (adv_set_eeprom_config_once(adv, eeprom_config) == 0) {
break;
}
if (++retry > ADV_EEPROM_MAX_RETRY) {
break;
}
}
return (retry > ADV_EEPROM_MAX_RETRY);
}
int
adv_reset_chip_and_scsi_bus(adv)
struct adv_softc *adv;
{
adv_stop_chip(adv);
ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_CHIP_RESET | ADV_CC_SCSI_RESET | ADV_CC_HALT);
DELAY(200 * 1000);
adv_set_chip_ih(adv, ADV_INS_RFLAG_WTM);
adv_set_chip_ih(adv, ADV_INS_HALT);
ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_CHIP_RESET | ADV_CC_HALT);
ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
DELAY(200 * 1000);
return (adv_is_chip_halted(adv));
}
int
adv_test_external_lram(adv)
struct adv_softc* adv;
{
u_int16_t q_addr;
u_int16_t saved_value;
int success;
success = 0;
/* XXX Why 241? */
q_addr = ADV_QNO_TO_QADDR(241);
saved_value = adv_read_lram_16(adv, q_addr);
if (adv_write_and_verify_lram_16(adv, q_addr, 0x55AA) == 0) {
success = 1;
adv_write_lram_16(adv, q_addr, saved_value);
}
return (success);
}
int
adv_init_lram_and_mcode(adv)
struct adv_softc *adv;
{
u_int32_t retval;
adv_disable_interrupt(adv);
adv_init_lram(adv);
retval = adv_load_microcode(adv, 0, (u_int16_t *)adv_mcode, adv_mcode_size);
if (retval != adv_mcode_chksum) {
printf("adv%d: Microcode download failed checksum!\n",
adv->unit);
return (1);
}
if (adv_init_microcode_var(adv) != 0)
return (1);
adv_enable_interrupt(adv);
return (0);
}
u_int8_t
adv_get_chip_irq(adv)
struct adv_softc *adv;
{
u_int16_t cfg_lsw;
u_int8_t chip_irq;
cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW);
if ((adv->type & ADV_VL) != 0) {
chip_irq = (u_int8_t)(((cfg_lsw >> 2) & 0x07));
if ((chip_irq == 0) ||
(chip_irq == 4) ||
(chip_irq == 7)) {
return (0);
}
return (chip_irq + (ADV_MIN_IRQ_NO - 1));
}
chip_irq = (u_int8_t)(((cfg_lsw >> 2) & 0x03));
if (chip_irq == 3)
chip_irq += 2;
return (chip_irq + ADV_MIN_IRQ_NO);
}
u_int8_t
adv_set_chip_irq(adv, irq_no)
struct adv_softc *adv;
u_int8_t irq_no;
{
u_int16_t cfg_lsw;
if ((adv->type & ADV_VL) != 0) {
if (irq_no != 0) {
if ((irq_no < ADV_MIN_IRQ_NO) || (irq_no > ADV_MAX_IRQ_NO)) {
irq_no = 0;
} else {
irq_no -= ADV_MIN_IRQ_NO - 1;
}
}
cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFE3;
cfg_lsw |= 0x0010;
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
adv_toggle_irq_act(adv);
cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFE0;
cfg_lsw |= (irq_no & 0x07) << 2;
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
adv_toggle_irq_act(adv);
} else if ((adv->type & ADV_ISA) != 0) {
if (irq_no == 15)
irq_no -= 2;
irq_no -= ADV_MIN_IRQ_NO;
cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFF3;
cfg_lsw |= (irq_no & 0x03) << 2;
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
}
return (adv_get_chip_irq(adv));
}
int
adv_execute_scsi_queue(adv, scsiq)
struct adv_softc *adv;
struct adv_scsi_q *scsiq;
{
int retval;
u_int n_q_required;
int s;
u_int32_t addr;
u_int8_t sg_entry_cnt;
u_int8_t target_ix;
u_int8_t sg_entry_cnt_minus_one;
u_int8_t tid_no;
u_int8_t sdtr_data;
u_int32_t *p_data_addr;
u_int32_t *p_data_bcount;
scsiq->q1.q_no = 0;
retval = 1; /* Default to error case */
target_ix = scsiq->q2.target_ix;
tid_no = ADV_TIX_TO_TID(target_ix);
n_q_required = 1;
s = splbio();
if (scsiq->cdbptr->opcode == REQUEST_SENSE) {
if (((adv->initiate_sdtr & scsiq->q1.target_id) != 0)
&& ((adv->sdtr_done & scsiq->q1.target_id) != 0)) {
int sdtr_index;
sdtr_data = adv_read_lram_8(adv, ADVV_SDTR_DATA_BEG + tid_no);
sdtr_index = (sdtr_data >> 4);
adv_msgout_sdtr(adv, adv_sdtr_period_tbl[sdtr_index],
(sdtr_data & ADV_SYN_MAX_OFFSET));
scsiq->q1.cntl |= (QC_MSG_OUT | QC_URGENT);
}
}
if ((scsiq->q1.cntl & QC_SG_HEAD) != 0) {
sg_entry_cnt = scsiq->sg_head->entry_cnt;
sg_entry_cnt_minus_one = sg_entry_cnt - 1;
#ifdef DIAGNOSTIC
if (sg_entry_cnt <= 1)
panic("adv_execute_scsi_queue: Queue with QC_SG_HEAD set but %d segs.", sg_entry_cnt);
if (sg_entry_cnt > ADV_MAX_SG_LIST)
panic("adv_execute_scsi_queue: Queue with too many segs.");
if (adv->type & (ADV_ISA | ADV_VL | ADV_EISA)) {
for (i = 0; i < sg_entry_cnt_minus_one; i++) {
addr = scsiq->sg_head->sg_list[i].addr +
scsiq->sg_head->sg_list[i].bytes;
if ((addr & 0x0003) != 0)
panic("adv_execute_scsi_queue: SG with odd address or byte count");
}
}
#endif
p_data_addr = &scsiq->sg_head->sg_list[sg_entry_cnt_minus_one].addr;
p_data_bcount = &scsiq->sg_head->sg_list[sg_entry_cnt_minus_one].bytes;
n_q_required = adv_sgcount_to_qcount(sg_entry_cnt);
scsiq->sg_head->queue_cnt = n_q_required - 1;
} else {
p_data_addr = &scsiq->q1.data_addr;
p_data_bcount = &scsiq->q1.data_cnt;
n_q_required = 1;
}
if (adv->bug_fix_control & ADV_BUG_FIX_ADD_ONE_BYTE) {
addr = *p_data_addr + *p_data_bcount;
if ((addr & 0x0003) != 0) {
/*
* XXX Is this extra test (the one on data_cnt) really only supposed to apply
* to the non SG case or was it a bug due to code duplication?
*/
if ((scsiq->q1.cntl & QC_SG_HEAD) != 0 || (scsiq->q1.data_cnt & 0x01FF) == 0) {
if ((scsiq->cdbptr->opcode == READ_COMMAND) ||
(scsiq->cdbptr->opcode == READ_BIG)) {
if ((scsiq->q2.tag_code & ADV_TAG_FLAG_ADD_ONE_BYTE) == 0) {
(*p_data_bcount)++;
scsiq->q2.tag_code |= ADV_TAG_FLAG_ADD_ONE_BYTE;
}
}
}
}
}
if ((adv_get_num_free_queues(adv, n_q_required) >= n_q_required)
|| ((scsiq->q1.cntl & QC_URGENT) != 0))
retval = adv_send_scsi_queue(adv, scsiq, n_q_required);
splx(s);
return (retval);
}
u_int8_t
adv_copy_lram_doneq(adv, q_addr, scsiq, max_dma_count)
struct adv_softc *adv;
u_int16_t q_addr;
struct adv_q_done_info *scsiq;
u_int32_t max_dma_count;
{
u_int16_t val;
u_int8_t sg_queue_cnt;
adv_get_q_info(adv, q_addr + ADV_SCSIQ_DONE_INFO_BEG,
(u_int16_t *)scsiq,
(sizeof(scsiq->d2) + sizeof(scsiq->d3)) / 2);
#if BYTE_ORDER == BIG_ENDIAN
adv_adj_endian_qdone_info(scsiq);
#endif
val = adv_read_lram_16(adv, q_addr + ADV_SCSIQ_B_STATUS);
scsiq->q_status = val & 0xFF;
scsiq->q_no = (val >> 8) & 0XFF;
val = adv_read_lram_16(adv, q_addr + ADV_SCSIQ_B_CNTL);
scsiq->cntl = val & 0xFF;
sg_queue_cnt = (val >> 8) & 0xFF;
val = adv_read_lram_16(adv,q_addr + ADV_SCSIQ_B_SENSE_LEN);
scsiq->sense_len = val & 0xFF;
scsiq->user_def = (val >> 8) & 0xFF;
scsiq->remain_bytes = adv_read_lram_32(adv,
q_addr + ADV_SCSIQ_DW_REMAIN_XFER_CNT);
/*
* XXX Is this just a safeguard or will the counter really
* have bogus upper bits?
*/
scsiq->remain_bytes &= max_dma_count;
return (sg_queue_cnt);
}
int
adv_stop_execution(adv)
struct adv_softc *adv;
{
int count;
count = 0;
if (adv_read_lram_8(adv, ADV_STOP_CODE_B) == 0) {
adv_write_lram_8(adv, ADV_STOP_CODE_B,
ADV_STOP_REQ_RISC_STOP);
do {
if (adv_read_lram_8(adv, ADV_STOP_CODE_B) &
ADV_STOP_ACK_RISC_STOP) {
return (1);
}
DELAY(1000);
} while (count++ < 20);
}
return (0);
}
int
adv_is_chip_halted(adv)
struct adv_softc *adv;
{
if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) != 0) {
if ((ADV_INB(adv, ADV_CHIP_CTRL) & ADV_CC_HALT) != 0) {
return (1);
}
}
return (0);
}
/*
* XXX The numeric constants and the loops in this routine
* need to be documented.
*/
void
adv_ack_interrupt(adv)
struct adv_softc *adv;
{
u_int8_t host_flag;
u_int8_t risc_flag;
int loop;
loop = 0;
do {
risc_flag = adv_read_lram_8(adv, ADVV_RISC_FLAG_B);
if (loop++ > 0x7FFF) {
break;
}
} while ((risc_flag & ADV_RISC_FLAG_GEN_INT) != 0);
host_flag = adv_read_lram_8(adv, ADVV_HOST_FLAG_B);
adv_write_lram_8(adv, ADVV_HOST_FLAG_B,
host_flag | ADV_HOST_FLAG_ACK_INT);
ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_INT_ACK);
loop = 0;
while (ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_INT_PENDING) {
ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_INT_ACK);
if (loop++ > 3) {
break;
}
}
adv_write_lram_8(adv, ADVV_HOST_FLAG_B, host_flag);
}
/*
* Handle all conditions that may halt the chip waiting
* for us to intervene.
*/
void
adv_isr_chip_halted(adv)
struct adv_softc *adv;
{
u_int16_t int_halt_code;
u_int8_t halt_qp;
u_int16_t halt_q_addr;
u_int8_t target_ix;
u_int8_t q_cntl;
u_int8_t tid_no;
target_bit_vector target_id;
target_bit_vector scsi_busy;
u_int8_t asyn_sdtr;
u_int8_t sdtr_data;
int_halt_code = adv_read_lram_16(adv, ADVV_HALTCODE_W);
halt_qp = adv_read_lram_8(adv, ADVV_CURCDB_B);
halt_q_addr = ADV_QNO_TO_QADDR(halt_qp);
target_ix = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_TARGET_IX);
q_cntl = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL);
tid_no = ADV_TIX_TO_TID(target_ix);
target_id = ADV_TID_TO_TARGET_ID(tid_no);
if (adv->needs_async_bug_fix & target_id)
asyn_sdtr = ASYN_SDTR_DATA_FIX;
else
asyn_sdtr = 0;
if (int_halt_code == ADV_HALT_EXTMSG_IN) {
struct sdtr_xmsg sdtr_xmsg;
int sdtr_accept;
adv_read_lram_16_multi(adv, ADVV_MSGIN_BEG,
(u_int16_t *) &sdtr_xmsg,
sizeof(sdtr_xmsg) >> 1);
if ((sdtr_xmsg.msg_type == MSG_EXTENDED) &&
(sdtr_xmsg.msg_len == MSG_EXT_SDTR_LEN)) {
sdtr_accept = TRUE;
if (sdtr_xmsg.msg_req == MSG_EXT_SDTR) {
if (sdtr_xmsg.req_ack_offset > ADV_SYN_MAX_OFFSET) {
sdtr_accept = FALSE;
sdtr_xmsg.req_ack_offset = ADV_SYN_MAX_OFFSET;
}
sdtr_data = adv_get_card_sync_setting(sdtr_xmsg.xfer_period,
sdtr_xmsg.req_ack_offset);
if (sdtr_xmsg.req_ack_offset == 0) {
q_cntl &= ~QC_MSG_OUT;
adv->initiate_sdtr &= ~target_id;
adv->sdtr_done &= ~target_id;
adv_set_chip_sdtr(adv, asyn_sdtr, tid_no);
} else if (sdtr_data == 0) {
q_cntl |= QC_MSG_OUT;
adv->initiate_sdtr &= ~target_id;
adv->sdtr_done &= ~target_id;
adv_set_chip_sdtr(adv, asyn_sdtr, tid_no);
} else {
if (sdtr_accept && (q_cntl & QC_MSG_OUT)) {
q_cntl &= ~QC_MSG_OUT;
adv->sdtr_done |= target_id;
adv->initiate_sdtr |= target_id;
adv->needs_async_bug_fix &= ~target_id;
adv_set_chip_sdtr(adv, sdtr_data, tid_no);
} else {
q_cntl |= QC_MSG_OUT;
adv_msgout_sdtr(adv,
sdtr_xmsg.xfer_period,
sdtr_xmsg.req_ack_offset);
adv->needs_async_bug_fix &= ~target_id;
adv_set_chip_sdtr(adv, sdtr_data, tid_no);
adv->sdtr_done |= target_id;
adv->initiate_sdtr |= target_id;
}
}
adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
}
}
/*
* XXX Hey, shouldn't we be rejecting any messages we don't understand?
* The old code also did not un-halt the processor if it recieved
* an extended message that it didn't understand. That didn't
* seem right, so I changed this routine to always un-halt the
* processor at the end.
*/
} else if (int_halt_code == ADV_HALT_CHK_CONDITION) {
u_int8_t tag_code;
u_int8_t q_status;
q_cntl |= QC_REQ_SENSE;
if (((adv->initiate_sdtr & target_id) != 0) &&
((adv->sdtr_done & target_id) != 0)) {
sdtr_data = adv_read_lram_8(adv, ADVV_SDTR_DATA_BEG + tid_no);
/* XXX Macrotize the extraction of the index from sdtr_data ??? */
adv_msgout_sdtr(adv, adv_sdtr_period_tbl[(sdtr_data >> 4) & 0x0F],
sdtr_data & ADV_SYN_MAX_OFFSET);
q_cntl |= QC_MSG_OUT;
}
adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
/* Don't tag request sense commands */
tag_code = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_TAG_CODE);
tag_code &= ~(MSG_SIMPLE_Q_TAG|MSG_HEAD_OF_Q_TAG|MSG_ORDERED_Q_TAG);
adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_TAG_CODE, tag_code);
q_status = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_STATUS);
q_status |= (QS_READY | QS_BUSY);
adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_STATUS, q_status);
scsi_busy = adv_read_lram_8(adv, ADVV_SCSIBUSY_B);
scsi_busy &= ~target_id;
adv_write_lram_8(adv, ADVV_SCSIBUSY_B, scsi_busy);
} else if (int_halt_code == ADV_HALT_SDTR_REJECTED) {
struct sdtr_xmsg out_msg;
adv_read_lram_16_multi(adv, ADVV_MSGOUT_BEG,
(u_int16_t *) &out_msg,
sizeof(out_msg)/2);
if ((out_msg.msg_type == MSG_EXTENDED) &&
(out_msg.msg_len == MSG_EXT_SDTR_LEN) &&
(out_msg.msg_req == MSG_EXT_SDTR)) {
adv->initiate_sdtr &= ~target_id;
adv->sdtr_done &= ~target_id;
adv_set_chip_sdtr(adv, asyn_sdtr, tid_no);
}
q_cntl &= ~QC_MSG_OUT;
adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
} else if (int_halt_code == ADV_HALT_SS_QUEUE_FULL) {
u_int8_t cur_dvc_qng;
u_int8_t scsi_status;
/*
* XXX It would be nice if we could push the responsibility for handling
* this situation onto the generic SCSI layer as other drivers do.
* This would be done by completing the command with the status byte
* set to QUEUE_FULL, whereupon it will request that any transactions
* pending on the target that where scheduled after this one be aborted
* (so as to maintain queue ordering) and the number of requests the
* upper level will attempt to send this target will be reduced.
*
* With this current strategy, am I guaranteed that once I unbusy the
* target the queued up transactions will be sent in the order they
* were queued? If the ASC chip does a round-robin on all queued
* transactions looking for queues to run, the order is not guaranteed.
*/
scsi_status = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_SCSI_STATUS);
cur_dvc_qng = adv_read_lram_8(adv, ADV_QADR_BEG + target_ix);
printf("adv%d: Queue full - target %d, active transactions %d\n", adv->unit,
tid_no, cur_dvc_qng);
#if 0
/* XXX FIX LATER */
if ((cur_dvc_qng > 0) && (adv->cur_dvc_qng[tid_no] > 0)) {
scsi_busy = adv_read_lram_8(adv, ADVV_SCSIBUSY_B);
scsi_busy |= target_id;
adv_write_lram_8(adv, ADVV_SCSIBUSY_B, scsi_busy);
asc_dvc->queue_full_or_busy |= target_id;
if (scsi_status == SS_QUEUE_FULL) {
if (cur_dvc_qng > ASC_MIN_TAGGED_CMD) {
cur_dvc_qng -= 1;
asc_dvc->max_dvc_qng[tid_no] = cur_dvc_qng;
adv_write_lram_8(adv, ADVV_MAX_DVC_QNG_BEG + tid_no,
cur_dvc_qng);
}
}
}
#endif
}
adv_write_lram_16(adv, ADVV_HALTCODE_W, 0);
}
/* Internal Routines */
static void
adv_read_lram_16_multi(adv, s_addr, buffer, count)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t *buffer;
int count;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
ADV_INSW(adv, ADV_LRAM_DATA, buffer, count);
}
static void
adv_write_lram_16_multi(adv, s_addr, buffer, count)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t *buffer;
int count;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
ADV_OUTSW(adv, ADV_LRAM_DATA, buffer, count);
}
static void
adv_mset_lram_16(adv, s_addr, set_value, count)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t set_value;
int count;
{
int i;
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
for (i = 0; i < count; i++)
ADV_OUTW(adv, ADV_LRAM_DATA, set_value);
}
static u_int32_t
adv_msum_lram_16(adv, s_addr, count)
struct adv_softc *adv;
u_int16_t s_addr;
int count;
{
u_int32_t sum;
int i;
sum = 0;
for (i = 0; i < count; i++, s_addr += 2)
sum += adv_read_lram_16(adv, s_addr);
return (sum);
}
static int
adv_write_and_verify_lram_16(adv, addr, value)
struct adv_softc *adv;
u_int16_t addr;
u_int16_t value;
{
int retval;
retval = 0;
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
ADV_OUTW(adv, ADV_LRAM_DATA, value);
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
if (value != ADV_INW(adv, ADV_LRAM_DATA))
retval = 1;
return (retval);
}
static u_int32_t
adv_read_lram_32(adv, addr)
struct adv_softc *adv;
u_int16_t addr;
{
u_int16_t val_low, val_high;
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
#if BYTE_ORDER == BIG_ENDIAN
val_high = ADV_INW(adv, ADV_LRAM_DATA);
val_low = ADV_INW(adv, ADV_LRAM_DATA);
#else
val_low = ADV_INW(adv, ADV_LRAM_DATA);
val_high = ADV_INW(adv, ADV_LRAM_DATA);
#endif
return (((u_int32_t)val_high << 16) | (u_int32_t)val_low);
}
static void
adv_write_lram_32(adv, addr, value)
struct adv_softc *adv;
u_int16_t addr;
u_int32_t value;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
#if BYTE_ORDER == BIG_ENDIAN
ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)((value >> 16) & 0xFFFF));
ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)(value & 0xFFFF));
#else
ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)(value & 0xFFFF));
ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)((value >> 16) & 0xFFFF));
#endif
}
static void
adv_write_lram_32_multi(adv, s_addr, buffer, count)
struct adv_softc *adv;
u_int16_t s_addr;
u_int32_t *buffer;
int count;
{
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
ADV_OUTSW(adv, ADV_LRAM_DATA, buffer, count * 2);
}
static u_int16_t
adv_read_eeprom_16(adv, addr)
struct adv_softc *adv;
u_int8_t addr;
{
u_int16_t read_wval;
u_int8_t cmd_reg;
adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_DISABLE);
DELAY(1000);
cmd_reg = addr | ADV_EEPROM_CMD_READ;
adv_write_eeprom_cmd_reg(adv, cmd_reg);
DELAY(1000);
read_wval = ADV_INW(adv, ADV_EEPROM_DATA);
DELAY(1000);
return (read_wval);
}
static u_int16_t
adv_write_eeprom_16(adv, addr, value)
struct adv_softc *adv;
u_int8_t addr;
u_int16_t value;
{
u_int16_t read_value;
read_value = adv_read_eeprom_16(adv, addr);
if (read_value != value) {
adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_ENABLE);
DELAY(1000);
ADV_OUTW(adv, ADV_EEPROM_DATA, value);
DELAY(1000);
adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE | addr);
DELAY(20 * 1000);
adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_DISABLE);
DELAY(1000);
read_value = adv_read_eeprom_16(adv, addr);
}
return (read_value);
}
static int
adv_write_eeprom_cmd_reg(adv, cmd_reg)
struct adv_softc *adv;
u_int8_t cmd_reg;
{
u_int8_t read_back;
int retry;
retry = 0;
while (1) {
ADV_OUTB(adv, ADV_EEPROM_CMD, cmd_reg);
DELAY(1000);
read_back = ADV_INB(adv, ADV_EEPROM_CMD);
if (read_back == cmd_reg) {
return (1);
}
if (retry++ > ADV_EEPROM_MAX_RETRY) {
return (0);
}
}
}
static int
adv_set_eeprom_config_once(adv, eeprom_config)
struct adv_softc *adv;
struct adv_eeprom_config *eeprom_config;
{
int n_error;
u_int16_t *wbuf;
u_int16_t sum;
u_int8_t s_addr;
u_int8_t cfg_beg;
u_int8_t cfg_end;
wbuf = (u_int16_t *)eeprom_config;
n_error = 0;
sum = 0;
for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
sum += *wbuf;
if (*wbuf != adv_write_eeprom_16(adv, s_addr, *wbuf)) {
n_error++;
}
}
if (adv->type & ADV_VL) {
cfg_beg = ADV_EEPROM_CFG_BEG_VL;
cfg_end = ADV_EEPROM_MAX_ADDR_VL;
} else {
cfg_beg = ADV_EEPROM_CFG_BEG;
cfg_end = ADV_EEPROM_MAX_ADDR;
}
for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
sum += *wbuf;
if (*wbuf != adv_write_eeprom_16(adv, s_addr, *wbuf)) {
n_error++;
}
}
*wbuf = sum;
if (sum != adv_write_eeprom_16(adv, s_addr, sum)) {
n_error++;
}
wbuf = (u_int16_t *)eeprom_config;
for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
if (*wbuf != adv_read_eeprom_16(adv, s_addr)) {
n_error++;
}
}
for (s_addr = cfg_beg; s_addr <= cfg_end; s_addr++, wbuf++) {
if (*wbuf != adv_read_eeprom_16(adv, s_addr)) {
n_error++;
}
}
return (n_error);
}
static u_int32_t
adv_load_microcode(adv, s_addr, mcode_buf, mcode_size)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t *mcode_buf;
u_int16_t mcode_size;
{
u_int32_t chksum;
u_int16_t mcode_lram_size;
u_int16_t mcode_chksum;
mcode_lram_size = mcode_size >> 1;
/* XXX Why zero the memory just before you write the whole thing?? */
/* adv_mset_lram_16(adv, s_addr, 0, mcode_lram_size);*/
adv_write_lram_16_multi(adv, s_addr, mcode_buf, mcode_lram_size);
chksum = adv_msum_lram_16(adv, s_addr, mcode_lram_size);
mcode_chksum = (u_int16_t)adv_msum_lram_16(adv, ADV_CODE_SEC_BEG,
((mcode_size - s_addr - ADV_CODE_SEC_BEG) >> 1));
adv_write_lram_16(adv, ADVV_MCODE_CHKSUM_W, mcode_chksum);
adv_write_lram_16(adv, ADVV_MCODE_SIZE_W, mcode_size);
return (chksum);
}
static void
adv_init_lram(adv)
struct adv_softc *adv;
{
u_int8_t i;
u_int16_t s_addr;
adv_mset_lram_16(adv, ADV_QADR_BEG, 0,
(u_int16_t)((((int)adv->max_openings + 2 + 1) * 64) >> 1));
i = ADV_MIN_ACTIVE_QNO;
s_addr = ADV_QADR_BEG + ADV_QBLK_SIZE;
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i + 1);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, adv->max_openings);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
i++;
s_addr += ADV_QBLK_SIZE;
for (; i < adv->max_openings; i++, s_addr += ADV_QBLK_SIZE) {
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i + 1);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, i - 1);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
}
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, ADV_QLINK_END);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, adv->max_openings - 1);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, adv->max_openings);
i++;
s_addr += ADV_QBLK_SIZE;
for (; i <= adv->max_openings + 3; i++, s_addr += ADV_QBLK_SIZE) {
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, i);
adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
}
}
static int
adv_init_microcode_var(adv)
struct adv_softc *adv;
{
int i;
for (i = 0; i <= ADV_MAX_TID; i++) {
adv_write_lram_8(adv, ADVV_SDTR_DATA_BEG + i,
adv->sdtr_data[i]);
}
adv_init_qlink_var(adv);
/* XXX Again, what about wide busses??? */
adv_write_lram_8(adv, ADVV_DISC_ENABLE_B, adv->disc_enable);
adv_write_lram_8(adv, ADVV_HOSTSCSI_ID_B, 0x01 << adv->scsi_id);
/* What are the extra 8 bytes for?? */
adv_write_lram_32(adv, ADVV_OVERRUN_PADDR_D, vtophys(&(adv->overrun_buf[0])) + 8);
adv_write_lram_32(adv, ADVV_OVERRUN_BSIZE_D, ADV_OVERRUN_BSIZE - 8);
#if 0
/* If we're going to print anything, RCS ids are more meaningful */
mcode_date = adv_read_lram_16(adv, ADVV_MC_DATE_W);
mcode_version = adv_read_lram_16(adv, ADVV_MC_VER_W);
#endif
ADV_OUTW(adv, ADV_REG_PROG_COUNTER, ADV_MCODE_START_ADDR);
if (ADV_INW(adv, ADV_REG_PROG_COUNTER) != ADV_MCODE_START_ADDR) {
printf("adv%d: Unable to set program counter. Aborting.\n", adv->unit);
return (1);
}
if (adv_start_chip(adv) != 1) {
printf("adv%d: Unable to start on board processor. Aborting.\n",
adv->unit);
return (1);
}
return (0);
}
static void
adv_init_qlink_var(adv)
struct adv_softc *adv;
{
int i;
u_int16_t lram_addr;
adv_write_lram_8(adv, ADVV_NEXTRDY_B, 1);
adv_write_lram_8(adv, ADVV_DONENEXT_B, adv->max_openings);
adv_write_lram_16(adv, ADVV_FREE_Q_HEAD_W, 1);
adv_write_lram_16(adv, ADVV_DONE_Q_TAIL_W, adv->max_openings);
adv_write_lram_8(adv, ADVV_BUSY_QHEAD_B,
(u_int8_t)((int) adv->max_openings + 1));
adv_write_lram_8(adv, ADVV_DISC1_QHEAD_B,
(u_int8_t)((int) adv->max_openings + 2));
adv_write_lram_8(adv, ADVV_TOTAL_READY_Q_B, adv->max_openings);
adv_write_lram_16(adv, ADVV_ASCDVC_ERR_CODE_W, 0);
adv_write_lram_16(adv, ADVV_HALTCODE_W, 0);
adv_write_lram_8(adv, ADVV_STOP_CODE_B, 0);
adv_write_lram_8(adv, ADVV_SCSIBUSY_B, 0);
adv_write_lram_8(adv, ADVV_WTM_FLAG_B, 0);
adv_write_lram_8(adv, ADVV_CDBCNT_B, 0);
lram_addr = ADV_QADR_BEG;
for (i = 0; i < 32; i++, lram_addr += 2)
adv_write_lram_16(adv, lram_addr, 0);
}
static void
adv_disable_interrupt(adv)
struct adv_softc *adv;
{
u_int16_t cfg;
cfg = ADV_INW(adv, ADV_CONFIG_LSW);
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg & ~ADV_CFG_LSW_HOST_INT_ON);
}
static void
adv_enable_interrupt(adv)
struct adv_softc *adv;
{
u_int16_t cfg;
cfg = ADV_INW(adv, ADV_CONFIG_LSW);
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg | ADV_CFG_LSW_HOST_INT_ON);
}
static void
adv_toggle_irq_act(adv)
struct adv_softc *adv;
{
ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_IRQ_ACT);
ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
}
#if UNUSED
static void
adv_start_execution(adv)
struct adv_softc *adv;
{
if (adv_read_lram_8(adv, ADV_STOP_CODE_B) != 0) {
adv_write_lram_8(adv, ADV_STOP_CODE_B, 0);
}
}
#endif
static int
adv_start_chip(adv)
struct adv_softc *adv;
{
ADV_OUTB(adv, ADV_CHIP_CTRL, 0);
if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) != 0)
return (0);
return (1);
}
static int
adv_stop_chip(adv)
struct adv_softc *adv;
{
u_int8_t cc_val;
cc_val = ADV_INB(adv, ADV_CHIP_CTRL)
& (~(ADV_CC_SINGLE_STEP | ADV_CC_TEST | ADV_CC_DIAG));
ADV_OUTB(adv, ADV_CHIP_CTRL, cc_val | ADV_CC_HALT);
adv_set_chip_ih(adv, ADV_INS_HALT);
adv_set_chip_ih(adv, ADV_INS_RFLAG_WTM);
if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) == 0) {
return (0);
}
return (1);
}
static void
adv_set_chip_ih(adv, ins_code)
struct adv_softc *adv;
u_int16_t ins_code;
{
adv_set_bank(adv, 1);
ADV_OUTW(adv, ADV_REG_IH, ins_code);
adv_set_bank(adv, 0);
}
static void
adv_set_bank(adv, bank)
struct adv_softc *adv;
u_int8_t bank;
{
u_int8_t control;
/*
* Start out with the bank reset to 0
*/
control = ADV_INB(adv, ADV_CHIP_CTRL)
& (~(ADV_CC_SINGLE_STEP | ADV_CC_TEST
| ADV_CC_DIAG | ADV_CC_SCSI_RESET
| ADV_CC_CHIP_RESET | ADV_CC_BANK_ONE));
if (bank == 1) {
control |= ADV_CC_BANK_ONE;
} else if (bank == 2) {
control |= ADV_CC_DIAG | ADV_CC_BANK_ONE;
}
ADV_OUTB(adv, ADV_CHIP_CTRL, control);
}
#if UNUSED
static u_int8_t
adv_get_chip_scsi_ctrl(adv)
struct adv_softc *adv;
{
u_int8_t scsi_ctrl;
adv_set_bank(adv, 1);
scsi_ctrl = ADV_INB(adv, ADV_REG_SC);
adv_set_bank(adv, 0);
return (scsi_ctrl);
}
#endif
static int
adv_sgcount_to_qcount(sgcount)
int sgcount;
{
int n_sg_list_qs;
n_sg_list_qs = ((sgcount - 1) / ADV_SG_LIST_PER_Q);
if (((sgcount - 1) % ADV_SG_LIST_PER_Q) != 0)
n_sg_list_qs++;
return (n_sg_list_qs + 1);
}
/*
* XXX Looks like more padding issues in this routine as well.
* There has to be a way to turn this into an insw.
*/
static void
adv_get_q_info(adv, s_addr, inbuf, words)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t *inbuf;
int words;
{
int i;
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
for (i = 0; i < words; i++, inbuf++) {
if (i == 5) {
continue;
}
*inbuf = ADV_INW(adv, ADV_LRAM_DATA);
}
}
static u_int
adv_get_num_free_queues(adv, n_qs)
struct adv_softc *adv;
u_int8_t n_qs;
{
u_int cur_used_qs;
u_int cur_free_qs;
if (n_qs == 1)
cur_used_qs = adv->cur_active +
adv->openings_needed +
ADV_MIN_FREE_Q;
else
cur_used_qs = adv->cur_active +
ADV_MIN_FREE_Q;
if ((cur_used_qs + n_qs) <= adv->max_openings) {
cur_free_qs = adv->max_openings - cur_used_qs;
return (cur_free_qs);
}
if (n_qs > 1)
if (n_qs > adv->openings_needed)
adv->openings_needed = n_qs;
return (0);
}
static u_int8_t
adv_alloc_free_queues(adv, free_q_head, n_free_q)
struct adv_softc *adv;
u_int8_t free_q_head;
u_int8_t n_free_q;
{
int i;
for (i = 0; i < n_free_q; i++) {
free_q_head = adv_alloc_free_queue(adv, free_q_head);
if (free_q_head == ADV_QLINK_END)
break;
}
return (free_q_head);
}
static u_int8_t
adv_alloc_free_queue(adv, free_q_head)
struct adv_softc *adv;
u_int8_t free_q_head;
{
u_int16_t q_addr;
u_int8_t next_qp;
u_int8_t q_status;
next_qp = ADV_QLINK_END;
q_addr = ADV_QNO_TO_QADDR(free_q_head);
q_status = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_STATUS);
if ((q_status & QS_READY) == 0)
next_qp = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_FWD);
return (next_qp);
}
static int
adv_send_scsi_queue(adv, scsiq, n_q_required)
struct adv_softc *adv;
struct adv_scsi_q *scsiq;
u_int8_t n_q_required;
{
u_int8_t free_q_head;
u_int8_t next_qp;
u_int8_t tid_no;
u_int8_t target_ix;
int retval;
retval = 1;
target_ix = scsiq->q2.target_ix;
tid_no = ADV_TIX_TO_TID(target_ix);
free_q_head = adv_read_lram_16(adv, ADVV_FREE_Q_HEAD_W) & 0xFF;
if ((next_qp = adv_alloc_free_queues(adv, free_q_head, n_q_required))
!= ADV_QLINK_END) {
if (n_q_required > 1) {
/*
* Only reset the shortage value when processing
* a "normal" request and not error recovery or
* other requests that dip into our reserved queues.
* Generally speaking, a normal request will need more
* than one queue.
*/
adv->openings_needed = 0;
}
scsiq->q1.q_no = free_q_head;
/*
* Now that we know our Q number, point our sense
* buffer pointer to an area below 16M if we are
* an ISA adapter.
*/
if (adv->sense_buffers != NULL)
scsiq->q1.sense_addr = (u_int32_t)vtophys(&(adv->sense_buffers[free_q_head]));
adv_put_ready_sg_list_queue(adv, scsiq, free_q_head);
adv_write_lram_16(adv, ADVV_FREE_Q_HEAD_W, next_qp);
adv->cur_active += n_q_required;
retval = 0;
}
return (retval);
}
static void
adv_put_ready_sg_list_queue(adv, scsiq, q_no)
struct adv_softc *adv;
struct adv_scsi_q *scsiq;
u_int8_t q_no;
{
u_int8_t sg_list_dwords;
u_int8_t sg_index, i;
u_int8_t sg_entry_cnt;
u_int8_t next_qp;
u_int16_t q_addr;
struct adv_sg_head *sg_head;
struct adv_sg_list_q scsi_sg_q;
sg_head = scsiq->sg_head;
if (sg_head) {
sg_entry_cnt = sg_head->entry_cnt - 1;
#ifdef DIAGNOSTIC
if (sg_entry_cnt == 0)
panic("adv_put_ready_sg_list_queue: ScsiQ with a SG list but only one element");
if ((scsiq->q1.cntl & QC_SG_HEAD) == 0)
panic("adv_put_ready_sg_list_queue: ScsiQ with a SG list but QC_SG_HEAD not set");
#endif
q_addr = ADV_QNO_TO_QADDR(q_no);
sg_index = 1;
scsiq->q1.sg_queue_cnt = sg_head->queue_cnt;
scsi_sg_q.sg_head_qp = q_no;
scsi_sg_q.cntl = QCSG_SG_XFER_LIST;
for (i = 0; i < sg_head->queue_cnt; i++) {
u_int8_t segs_this_q;
if (sg_entry_cnt > ADV_SG_LIST_PER_Q)
segs_this_q = ADV_SG_LIST_PER_Q;
else {
/* This will be the last segment then */
segs_this_q = sg_entry_cnt;
scsi_sg_q.cntl |= QCSG_SG_XFER_END;
}
scsi_sg_q.seq_no = i + 1;
sg_list_dwords = segs_this_q * 2;
if (i == 0) {
scsi_sg_q.sg_list_cnt = segs_this_q;
scsi_sg_q.sg_cur_list_cnt = segs_this_q;
} else {
scsi_sg_q.sg_list_cnt = segs_this_q - 1;
scsi_sg_q.sg_cur_list_cnt = segs_this_q - 1;
}
next_qp = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_FWD);
scsi_sg_q.q_no = next_qp;
q_addr = ADV_QNO_TO_QADDR(next_qp);
adv_write_lram_16_multi(adv, q_addr + ADV_SCSIQ_SGHD_CPY_BEG,
(u_int16_t *)&scsi_sg_q,
sizeof(scsi_sg_q) >> 1);
adv_write_lram_32_multi(adv, q_addr + ADV_SGQ_LIST_BEG,
(u_int32_t *)&sg_head->sg_list[sg_index],
sg_list_dwords);
sg_entry_cnt -= segs_this_q;
sg_index += ADV_SG_LIST_PER_Q;
}
}
adv_put_ready_queue(adv, scsiq, q_no);
}
static void
adv_put_ready_queue(adv, scsiq, q_no)
struct adv_softc *adv;
struct adv_scsi_q *scsiq;
u_int8_t q_no;
{
u_int16_t q_addr;
u_int8_t tid_no;
u_int8_t sdtr_data;
u_int8_t syn_period_ix;
u_int8_t syn_offset;
if (((adv->initiate_sdtr & scsiq->q1.target_id) != 0) &&
((adv->sdtr_done & scsiq->q1.target_id) == 0)) {
tid_no = ADV_TIX_TO_TID(scsiq->q2.target_ix);
sdtr_data = adv_read_lram_8(adv, ADVV_SDTR_DATA_BEG + tid_no);
syn_period_ix = (sdtr_data >> 4) & (ADV_SYN_XFER_NO - 1);
syn_offset = sdtr_data & ADV_SYN_MAX_OFFSET;
adv_msgout_sdtr(adv, adv_sdtr_period_tbl[syn_period_ix],
syn_offset);
scsiq->q1.cntl |= QC_MSG_OUT;
}
q_addr = ADV_QNO_TO_QADDR(q_no);
scsiq->q1.status = QS_FREE;
adv_write_lram_16_multi(adv, q_addr + ADV_SCSIQ_CDB_BEG,
(u_int16_t *)scsiq->cdbptr,
scsiq->q2.cdb_len >> 1);
#if BYTE_ORDER == BIG_ENDIAN
adv_adj_scsiq_endian(scsiq);
#endif
adv_put_scsiq(adv, q_addr + ADV_SCSIQ_CPY_BEG,
(u_int16_t *) &scsiq->q1.cntl,
((sizeof(scsiq->q1) + sizeof(scsiq->q2)) / 2) - 1);
#if CC_WRITE_IO_COUNT
adv_write_lram_16(adv, q_addr + ADV_SCSIQ_W_REQ_COUNT,
adv->req_count);
#endif
#if CC_CLEAR_DMA_REMAIN
adv_write_lram_32(adv, q_addr + ADV_SCSIQ_DW_REMAIN_XFER_ADDR, 0);
adv_write_lram_32(adv, q_addr + ADV_SCSIQ_DW_REMAIN_XFER_CNT, 0);
#endif
adv_write_lram_16(adv, q_addr + ADV_SCSIQ_B_STATUS,
(scsiq->q1.q_no << 8) | QS_READY);
}
static void
adv_put_scsiq(adv, s_addr, buffer, words)
struct adv_softc *adv;
u_int16_t s_addr;
u_int16_t *buffer;
int words;
{
int i;
/*
* XXX This routine makes *gross* assumptions
* about padding in the data structures.
* Either the data structures should have explicit
* padding members added, or they should have padding
* turned off via compiler attributes depending on
* which yields better overall performance. My hunch
* would be that turning off padding would be the
* faster approach as an outsw is much faster than
* this crude loop and accessing un-aligned data
* members isn't *that* expensive. The other choice
* would be to modify the ASC script so that the
* the adv_scsiq_1 structure can be re-arranged so
* padding isn't required.
*/
ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
for (i = 0; i < words; i++, buffer++) {
if (i == 2 || i == 10) {
continue;
}
ADV_OUTW(adv, ADV_LRAM_DATA, *buffer);
}
}
static u_int8_t
adv_msgout_sdtr(adv, sdtr_period, sdtr_offset)
struct adv_softc *adv;
u_int8_t sdtr_period;
u_int8_t sdtr_offset;
{
struct sdtr_xmsg sdtr_buf;
sdtr_buf.msg_type = MSG_EXTENDED;
sdtr_buf.msg_len = MSG_EXT_SDTR_LEN;
sdtr_buf.msg_req = MSG_EXT_SDTR;
sdtr_buf.xfer_period = sdtr_period;
sdtr_offset &= ADV_SYN_MAX_OFFSET;
sdtr_buf.req_ack_offset = sdtr_offset;
adv_write_lram_16_multi(adv, ADVV_MSGOUT_BEG,
(u_int16_t *) &sdtr_buf,
sizeof(sdtr_buf) / 2);
return (adv_get_card_sync_setting(sdtr_period, sdtr_offset));
}
static u_int8_t
adv_get_card_sync_setting(period, offset)
u_int8_t period;
u_int8_t offset;
{
u_int i;
if (period >= adv_sdtr_period_tbl[0]) {
for (i = 0; i < sizeof(adv_sdtr_period_tbl); i++) {
if (period <= adv_sdtr_period_tbl[i])
return ((adv_sdtr_period_tbl[i] << 4) | offset);
}
}
return (0);
}
static void
adv_set_chip_sdtr(adv, sdtr_data, tid_no)
struct adv_softc *adv;
u_int8_t sdtr_data;
u_int8_t tid_no;
{
ADV_OUTB(adv, ADV_SYN_OFFSET, sdtr_data);
adv_write_lram_8(adv, ADVV_SDTR_DONE_BEG + tid_no, sdtr_data);
}
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