ide: remove useless subdirs from drivers/ide/

Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 429 insertions, 0 deletions

diff --git a/drivers/ide/qd65xx.c b/drivers/ide/qd65xx.c
new file mode 100644
index 000000000000..bc27c7aba936
--- /dev/null
+++ b/drivers/ide/qd65xx.c
@@ -0,0 +1,429 @@
+/*
+ *  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@fnac.net>
+ */
+
+#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/system.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_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));
+}
+
+/*
+ * 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)
+{
+        drive->drive_data &= 0xff00;
+        drive->drive_data |= timing;
+
+        printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);
+}
+
+static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
+{
+        u16 *id = drive->id;
+        int active_time   = 175;
+        int recovery_time = 415; /* worst case values from the dos driver */
+
+        /*
+         * FIXME: use "pio" 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(HWIF(drive), active_time, recovery_time));
+}
+
+static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        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(drive)->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(drive)->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);
+
+        drive->drive_data = 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;
+
+        drive->drive_data = (drive->dn & 1) ? t2 : t1;
+}
+
+static const struct ide_port_ops qd6500_port_ops = {
+        .init_dev               = qd6500_init_dev,
+        .set_pio_mode           = qd6500_set_pio_mode,
+        .selectproc             = qd65xx_select,
+};
+
+static const struct ide_port_ops qd6580_port_ops = {
+        .init_dev               = qd6580_init_dev,
+        .set_pio_mode           = qd6580_set_pio_mode,
+        .selectproc             = qd65xx_select,
+};
+
+static const struct ide_port_info qd65xx_port_info __initdata = {
+        .name                   = DRV_NAME,
+        .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 int 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");