mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 16:06:42 +07:00
e6b53703b9
Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
446 lines
11 KiB
C
446 lines
11 KiB
C
/*
|
|
* Copyright (C) 1996-2001 Linus Torvalds & author (see below)
|
|
*/
|
|
|
|
/*
|
|
* Version 0.03 Cleaned auto-tune, added probe
|
|
* Version 0.04 Added second channel tuning
|
|
* Version 0.05 Enhanced tuning ; added qd6500 support
|
|
* Version 0.06 Added dos driver's list
|
|
* Version 0.07 Second channel bug fix
|
|
*
|
|
* QDI QD6500/QD6580 EIDE controller fast support
|
|
*
|
|
* To activate controller support, use "ide0=qd65xx"
|
|
*/
|
|
|
|
/*
|
|
* Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by
|
|
* Samuel Thibault <samuel.thibault@ens-lyon.org>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/init.h>
|
|
#include <asm/io.h>
|
|
|
|
#define DRV_NAME "qd65xx"
|
|
|
|
#include "qd65xx.h"
|
|
|
|
/*
|
|
* I/O ports are 0x30-0x31 (and 0x32-0x33 for qd6580)
|
|
* or 0xb0-0xb1 (and 0xb2-0xb3 for qd6580)
|
|
* -- qd6500 is a single IDE interface
|
|
* -- qd6580 is a dual IDE interface
|
|
*
|
|
* More research on qd6580 being done by willmore@cig.mot.com (David)
|
|
* More Information given by Petr Soucek (petr@ryston.cz)
|
|
* http://www.ryston.cz/petr/vlb
|
|
*/
|
|
|
|
/*
|
|
* base: Timer1
|
|
*
|
|
*
|
|
* base+0x01: Config (R/O)
|
|
*
|
|
* bit 0: ide baseport: 1 = 0x1f0 ; 0 = 0x170 (only useful for qd6500)
|
|
* bit 1: qd65xx baseport: 1 = 0xb0 ; 0 = 0x30
|
|
* bit 2: ID3: bus speed: 1 = <=33MHz ; 0 = >33MHz
|
|
* bit 3: qd6500: 1 = disabled, 0 = enabled
|
|
* qd6580: 1
|
|
* upper nibble:
|
|
* qd6500: 1100
|
|
* qd6580: either 1010 or 0101
|
|
*
|
|
*
|
|
* base+0x02: Timer2 (qd6580 only)
|
|
*
|
|
*
|
|
* base+0x03: Control (qd6580 only)
|
|
*
|
|
* bits 0-3 must always be set 1
|
|
* bit 4 must be set 1, but is set 0 by dos driver while measuring vlb clock
|
|
* bit 0 : 1 = Only primary port enabled : channel 0 for hda, channel 1 for hdb
|
|
* 0 = Primary and Secondary ports enabled : channel 0 for hda & hdb
|
|
* channel 1 for hdc & hdd
|
|
* bit 1 : 1 = only disks on primary port
|
|
* 0 = disks & ATAPI devices on primary port
|
|
* bit 2-4 : always 0
|
|
* bit 5 : status, but of what ?
|
|
* bit 6 : always set 1 by dos driver
|
|
* bit 7 : set 1 for non-ATAPI devices on primary port
|
|
* (maybe read-ahead and post-write buffer ?)
|
|
*/
|
|
|
|
static int timings[4]={-1,-1,-1,-1}; /* stores current timing for each timer */
|
|
|
|
/*
|
|
* qd65xx_select:
|
|
*
|
|
* This routine is invoked to prepare for access to a given drive.
|
|
*/
|
|
|
|
static void qd65xx_dev_select(ide_drive_t *drive)
|
|
{
|
|
u8 index = (( (QD_TIMREG(drive)) & 0x80 ) >> 7) |
|
|
(QD_TIMREG(drive) & 0x02);
|
|
|
|
if (timings[index] != QD_TIMING(drive))
|
|
outb(timings[index] = QD_TIMING(drive), QD_TIMREG(drive));
|
|
|
|
outb(drive->select | ATA_DEVICE_OBS, drive->hwif->io_ports.device_addr);
|
|
}
|
|
|
|
/*
|
|
* qd6500_compute_timing
|
|
*
|
|
* computes the timing value where
|
|
* lower nibble represents active time, in count of VLB clocks
|
|
* upper nibble represents recovery time, in count of VLB clocks
|
|
*/
|
|
|
|
static u8 qd6500_compute_timing (ide_hwif_t *hwif, int active_time, int recovery_time)
|
|
{
|
|
int clk = ide_vlb_clk ? ide_vlb_clk : 50;
|
|
u8 act_cyc, rec_cyc;
|
|
|
|
if (clk <= 33) {
|
|
act_cyc = 9 - IDE_IN(active_time * clk / 1000 + 1, 2, 9);
|
|
rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 0, 15);
|
|
} else {
|
|
act_cyc = 8 - IDE_IN(active_time * clk / 1000 + 1, 1, 8);
|
|
rec_cyc = 18 - IDE_IN(recovery_time * clk / 1000 + 1, 3, 18);
|
|
}
|
|
|
|
return (rec_cyc << 4) | 0x08 | act_cyc;
|
|
}
|
|
|
|
/*
|
|
* qd6580_compute_timing
|
|
*
|
|
* idem for qd6580
|
|
*/
|
|
|
|
static u8 qd6580_compute_timing (int active_time, int recovery_time)
|
|
{
|
|
int clk = ide_vlb_clk ? ide_vlb_clk : 50;
|
|
u8 act_cyc, rec_cyc;
|
|
|
|
act_cyc = 17 - IDE_IN(active_time * clk / 1000 + 1, 2, 17);
|
|
rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 2, 15);
|
|
|
|
return (rec_cyc << 4) | act_cyc;
|
|
}
|
|
|
|
/*
|
|
* qd_find_disk_type
|
|
*
|
|
* tries to find timing from dos driver's table
|
|
*/
|
|
|
|
static int qd_find_disk_type (ide_drive_t *drive,
|
|
int *active_time, int *recovery_time)
|
|
{
|
|
struct qd65xx_timing_s *p;
|
|
char *m = (char *)&drive->id[ATA_ID_PROD];
|
|
char model[ATA_ID_PROD_LEN];
|
|
|
|
if (*m == 0)
|
|
return 0;
|
|
|
|
strncpy(model, m, ATA_ID_PROD_LEN);
|
|
ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */
|
|
|
|
for (p = qd65xx_timing ; p->offset != -1 ; p++) {
|
|
if (!strncmp(p->model, model+p->offset, 4)) {
|
|
printk(KERN_DEBUG "%s: listed !\n", drive->name);
|
|
*active_time = p->active;
|
|
*recovery_time = p->recovery;
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* qd_set_timing:
|
|
*
|
|
* records the timing
|
|
*/
|
|
|
|
static void qd_set_timing (ide_drive_t *drive, u8 timing)
|
|
{
|
|
unsigned long data = (unsigned long)ide_get_drivedata(drive);
|
|
|
|
data &= 0xff00;
|
|
data |= timing;
|
|
ide_set_drivedata(drive, (void *)data);
|
|
|
|
printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);
|
|
}
|
|
|
|
static void qd6500_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
|
{
|
|
u16 *id = drive->id;
|
|
int active_time = 175;
|
|
int recovery_time = 415; /* worst case values from the dos driver */
|
|
|
|
/* FIXME: use drive->pio_mode value */
|
|
if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
|
|
(id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) &&
|
|
id[ATA_ID_EIDE_PIO] >= 240) {
|
|
printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
|
|
id[ATA_ID_OLD_PIO_MODES] & 0xff);
|
|
active_time = 110;
|
|
recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
|
|
}
|
|
|
|
qd_set_timing(drive, qd6500_compute_timing(drive->hwif,
|
|
active_time, recovery_time));
|
|
}
|
|
|
|
static void qd6580_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
|
|
{
|
|
const u8 pio = drive->pio_mode - XFER_PIO_0;
|
|
struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
|
|
unsigned int cycle_time;
|
|
int active_time = 175;
|
|
int recovery_time = 415; /* worst case values from the dos driver */
|
|
u8 base = (hwif->config_data & 0xff00) >> 8;
|
|
|
|
if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) {
|
|
cycle_time = ide_pio_cycle_time(drive, pio);
|
|
|
|
switch (pio) {
|
|
case 0: break;
|
|
case 3:
|
|
if (cycle_time >= 110) {
|
|
active_time = 86;
|
|
recovery_time = cycle_time - 102;
|
|
} else
|
|
printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);
|
|
break;
|
|
case 4:
|
|
if (cycle_time >= 69) {
|
|
active_time = 70;
|
|
recovery_time = cycle_time - 61;
|
|
} else
|
|
printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);
|
|
break;
|
|
default:
|
|
if (cycle_time >= 180) {
|
|
active_time = 110;
|
|
recovery_time = cycle_time - 120;
|
|
} else {
|
|
active_time = t->active;
|
|
recovery_time = cycle_time - active_time;
|
|
}
|
|
}
|
|
printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio);
|
|
}
|
|
|
|
if (!hwif->channel && drive->media != ide_disk) {
|
|
outb(0x5f, QD_CONTROL_PORT);
|
|
printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO "
|
|
"and post-write buffer on %s.\n",
|
|
drive->name, hwif->name);
|
|
}
|
|
|
|
qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time));
|
|
}
|
|
|
|
/*
|
|
* qd_testreg
|
|
*
|
|
* tests if the given port is a register
|
|
*/
|
|
|
|
static int __init qd_testreg(int port)
|
|
{
|
|
unsigned long flags;
|
|
u8 savereg, readreg;
|
|
|
|
local_irq_save(flags);
|
|
savereg = inb_p(port);
|
|
outb_p(QD_TESTVAL, port); /* safe value */
|
|
readreg = inb_p(port);
|
|
outb(savereg, port);
|
|
local_irq_restore(flags);
|
|
|
|
if (savereg == QD_TESTVAL) {
|
|
printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n");
|
|
printk(KERN_ERR "Please contact maintainers to tell about your hardware\n");
|
|
printk(KERN_ERR "Assuming qd65xx is not present.\n");
|
|
return 1;
|
|
}
|
|
|
|
return (readreg != QD_TESTVAL);
|
|
}
|
|
|
|
static void __init qd6500_init_dev(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
u8 base = (hwif->config_data & 0xff00) >> 8;
|
|
u8 config = QD_CONFIG(hwif);
|
|
|
|
ide_set_drivedata(drive, (void *)QD6500_DEF_DATA);
|
|
}
|
|
|
|
static void __init qd6580_init_dev(ide_drive_t *drive)
|
|
{
|
|
ide_hwif_t *hwif = drive->hwif;
|
|
u16 t1, t2;
|
|
u8 base = (hwif->config_data & 0xff00) >> 8;
|
|
u8 config = QD_CONFIG(hwif);
|
|
|
|
if (hwif->host_flags & IDE_HFLAG_SINGLE) {
|
|
t1 = QD6580_DEF_DATA;
|
|
t2 = QD6580_DEF_DATA2;
|
|
} else
|
|
t2 = t1 = hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA;
|
|
|
|
ide_set_drivedata(drive, (void *)((drive->dn & 1) ? t2 : t1));
|
|
}
|
|
|
|
static const struct ide_tp_ops qd65xx_tp_ops = {
|
|
.exec_command = ide_exec_command,
|
|
.read_status = ide_read_status,
|
|
.read_altstatus = ide_read_altstatus,
|
|
.write_devctl = ide_write_devctl,
|
|
|
|
.dev_select = qd65xx_dev_select,
|
|
.tf_load = ide_tf_load,
|
|
.tf_read = ide_tf_read,
|
|
|
|
.input_data = ide_input_data,
|
|
.output_data = ide_output_data,
|
|
};
|
|
|
|
static const struct ide_port_ops qd6500_port_ops = {
|
|
.init_dev = qd6500_init_dev,
|
|
.set_pio_mode = qd6500_set_pio_mode,
|
|
};
|
|
|
|
static const struct ide_port_ops qd6580_port_ops = {
|
|
.init_dev = qd6580_init_dev,
|
|
.set_pio_mode = qd6580_set_pio_mode,
|
|
};
|
|
|
|
static const struct ide_port_info qd65xx_port_info __initconst = {
|
|
.name = DRV_NAME,
|
|
.tp_ops = &qd65xx_tp_ops,
|
|
.chipset = ide_qd65xx,
|
|
.host_flags = IDE_HFLAG_IO_32BIT |
|
|
IDE_HFLAG_NO_DMA,
|
|
.pio_mask = ATA_PIO4,
|
|
};
|
|
|
|
/*
|
|
* qd_probe:
|
|
*
|
|
* looks at the specified baseport, and if qd found, registers & initialises it
|
|
* return 1 if another qd may be probed
|
|
*/
|
|
|
|
static int __init qd_probe(int base)
|
|
{
|
|
int rc;
|
|
u8 config, unit, control;
|
|
struct ide_port_info d = qd65xx_port_info;
|
|
|
|
config = inb(QD_CONFIG_PORT);
|
|
|
|
if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) )
|
|
return -ENODEV;
|
|
|
|
unit = ! (config & QD_CONFIG_IDE_BASEPORT);
|
|
|
|
if (unit)
|
|
d.host_flags |= IDE_HFLAG_QD_2ND_PORT;
|
|
|
|
switch (config & 0xf0) {
|
|
case QD_CONFIG_QD6500:
|
|
if (qd_testreg(base))
|
|
return -ENODEV; /* bad register */
|
|
|
|
if (config & QD_CONFIG_DISABLED) {
|
|
printk(KERN_WARNING "qd6500 is disabled !\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
printk(KERN_NOTICE "qd6500 at %#x\n", base);
|
|
printk(KERN_DEBUG "qd6500: config=%#x, ID3=%u\n",
|
|
config, QD_ID3);
|
|
|
|
d.port_ops = &qd6500_port_ops;
|
|
d.host_flags |= IDE_HFLAG_SINGLE;
|
|
break;
|
|
case QD_CONFIG_QD6580_A:
|
|
case QD_CONFIG_QD6580_B:
|
|
if (qd_testreg(base) || qd_testreg(base + 0x02))
|
|
return -ENODEV; /* bad registers */
|
|
|
|
control = inb(QD_CONTROL_PORT);
|
|
|
|
printk(KERN_NOTICE "qd6580 at %#x\n", base);
|
|
printk(KERN_DEBUG "qd6580: config=%#x, control=%#x, ID3=%u\n",
|
|
config, control, QD_ID3);
|
|
|
|
outb(QD_DEF_CONTR, QD_CONTROL_PORT);
|
|
|
|
d.port_ops = &qd6580_port_ops;
|
|
if (control & QD_CONTR_SEC_DISABLED)
|
|
d.host_flags |= IDE_HFLAG_SINGLE;
|
|
|
|
printk(KERN_INFO "qd6580: %s IDE board\n",
|
|
(control & QD_CONTR_SEC_DISABLED) ? "single" : "dual");
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
|
|
rc = ide_legacy_device_add(&d, (base << 8) | config);
|
|
|
|
if (d.host_flags & IDE_HFLAG_SINGLE)
|
|
return (rc == 0) ? 1 : rc;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static bool probe_qd65xx;
|
|
|
|
module_param_named(probe, probe_qd65xx, bool, 0);
|
|
MODULE_PARM_DESC(probe, "probe for QD65xx chipsets");
|
|
|
|
static int __init qd65xx_init(void)
|
|
{
|
|
int rc1, rc2 = -ENODEV;
|
|
|
|
if (probe_qd65xx == 0)
|
|
return -ENODEV;
|
|
|
|
rc1 = qd_probe(0x30);
|
|
if (rc1)
|
|
rc2 = qd_probe(0xb0);
|
|
|
|
if (rc1 < 0 && rc2 < 0)
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(qd65xx_init);
|
|
|
|
MODULE_AUTHOR("Samuel Thibault");
|
|
MODULE_DESCRIPTION("support of qd65xx vlb ide chipset");
|
|
MODULE_LICENSE("GPL");
|