/*
- * linux/drivers/ide/pci/cmd640.c Version 1.02 Sep 01, 1996
- *
* Copyright (C) 1995-1996 Linus Torvalds & authors (see below)
*/
/*
* Original authors: abramov@cecmow.enet.dec.com (Igor Abramov)
- * mlord@pobox.com (Mark Lord)
+ * mlord@pobox.com (Mark Lord)
*
* See linux/MAINTAINERS for address of current maintainer.
*
#define CMD640_PREFETCH_MASKS 1
-//#define CMD640_DUMP_REGS
+/*#define CMD640_DUMP_REGS */
#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/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>
#include <asm/io.h>
+#define DRV_NAME "cmd640"
+
/*
* This flag is set in ide.c by the parameter: ide0=cmd640_vlb
*/
-int cmd640_vlb = 0;
+int cmd640_vlb;
/*
* CMD640 specific registers definition.
* These are initialized to point at the devices we control
*/
static ide_hwif_t *cmd_hwif0, *cmd_hwif1;
-static ide_drive_t *cmd_drives[4];
/*
* Interface to access cmd640x registers
/* PCI method 1 access */
-static void put_cmd640_reg_pci1 (u16 reg, u8 val)
+static void put_cmd640_reg_pci1(u16 reg, u8 val)
{
outl_p((reg & 0xfc) | cmd640_key, 0xcf8);
outb_p(val, (reg & 3) | 0xcfc);
}
-static u8 get_cmd640_reg_pci1 (u16 reg)
+static u8 get_cmd640_reg_pci1(u16 reg)
{
outl_p((reg & 0xfc) | cmd640_key, 0xcf8);
return inb_p((reg & 3) | 0xcfc);
/* PCI method 2 access (from CMD datasheet) */
-static void put_cmd640_reg_pci2 (u16 reg, u8 val)
+static void put_cmd640_reg_pci2(u16 reg, u8 val)
{
outb_p(0x10, 0xcf8);
outb_p(val, cmd640_key + reg);
outb_p(0, 0xcf8);
}
-static u8 get_cmd640_reg_pci2 (u16 reg)
+static u8 get_cmd640_reg_pci2(u16 reg)
{
u8 b;
/* VLB access */
-static void put_cmd640_reg_vlb (u16 reg, u8 val)
+static void put_cmd640_reg_vlb(u16 reg, u8 val)
{
outb_p(reg, cmd640_key);
outb_p(val, cmd640_key + 4);
}
-static u8 get_cmd640_reg_vlb (u16 reg)
+static u8 get_cmd640_reg_vlb(u16 reg)
{
outb_p(reg, cmd640_key);
return inb_p(cmd640_key + 4);
unsigned long flags;
spin_lock_irqsave(&cmd640_lock, flags);
- __put_cmd640_reg(reg,val);
+ __put_cmd640_reg(reg, val);
spin_unlock_irqrestore(&cmd640_lock, flags);
}
-static int __init match_pci_cmd640_device (void)
+static int __init match_pci_cmd640_device(void)
{
const u8 ven_dev[4] = {0x95, 0x10, 0x40, 0x06};
unsigned int i;
/*
* Probe for CMD640x -- pci method 1
*/
-static int __init probe_for_cmd640_pci1 (void)
+static int __init probe_for_cmd640_pci1(void)
{
__get_cmd640_reg = get_cmd640_reg_pci1;
__put_cmd640_reg = put_cmd640_reg_pci1;
/*
* Probe for CMD640x -- pci method 2
*/
-static int __init probe_for_cmd640_pci2 (void)
+static int __init probe_for_cmd640_pci2(void)
{
__get_cmd640_reg = get_cmd640_reg_pci2;
__put_cmd640_reg = put_cmd640_reg_pci2;
/*
* Probe for CMD640x -- vlb
*/
-static int __init probe_for_cmd640_vlb (void)
+static int __init probe_for_cmd640_vlb(void)
{
u8 b;
* Returns 1 if an IDE interface/drive exists at 0x170,
* Returns 0 otherwise.
*/
-static int __init secondary_port_responding (void)
+static int __init secondary_port_responding(void)
{
unsigned long flags;
/*
* Dump out all cmd640 registers. May be called from ide.c
*/
-static void cmd640_dump_regs (void)
+static void cmd640_dump_regs(void)
{
unsigned int reg = cmd640_vlb ? 0x50 : 0x00;
* Check whether prefetch is on for a drive,
* and initialize the unmask flags for safe operation.
*/
-static void __init check_prefetch (unsigned int index)
+static void __init check_prefetch(ide_drive_t *drive, unsigned int index)
{
- ide_drive_t *drive = cmd_drives[index];
u8 b = get_cmd640_reg(prefetch_regs[index]);
if (b & prefetch_masks[index]) { /* is prefetch off? */
}
}
-/*
- * Figure out which devices we control
- */
-static void __init setup_device_ptrs (void)
-{
- unsigned int i;
-
- cmd_hwif0 = &ide_hwifs[0]; /* default, if not found below */
- cmd_hwif1 = &ide_hwifs[1]; /* default, if not found below */
- for (i = 0; i < MAX_HWIFS; i++) {
- ide_hwif_t *hwif = &ide_hwifs[i];
- if (hwif->chipset == ide_unknown || hwif->chipset == ide_forced) {
- if (hwif->io_ports[IDE_DATA_OFFSET] == 0x1f0)
- cmd_hwif0 = hwif;
- else if (hwif->io_ports[IDE_DATA_OFFSET] == 0x170)
- cmd_hwif1 = hwif;
- }
- }
- cmd_drives[0] = &cmd_hwif0->drives[0];
- cmd_drives[1] = &cmd_hwif0->drives[1];
- cmd_drives[2] = &cmd_hwif1->drives[0];
- cmd_drives[3] = &cmd_hwif1->drives[1];
-}
-
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
/*
* Sets prefetch mode for a drive.
*/
-static void set_prefetch_mode (unsigned int index, int mode)
+static void set_prefetch_mode(ide_drive_t *drive, unsigned int index, int mode)
{
- ide_drive_t *drive = cmd_drives[index];
unsigned long flags;
int reg = prefetch_regs[index];
u8 b;
/*
* Dump out current drive clocks settings
*/
-static void display_clocks (unsigned int index)
+static void display_clocks(unsigned int index)
{
u8 active_count, recovery_count;
* Pack active and recovery counts into single byte representation
* used by controller
*/
-static inline u8 pack_nibbles (u8 upper, u8 lower)
+static inline u8 pack_nibbles(u8 upper, u8 lower)
{
return ((upper & 0x0f) << 4) | (lower & 0x0f);
}
/*
* This routine retrieves the initial drive timings from the chipset.
*/
-static void __init retrieve_drive_counts (unsigned int index)
+static void __init retrieve_drive_counts(unsigned int index)
{
u8 b;
*/
b = get_cmd640_reg(arttim_regs[index]) & ~0x3f;
switch (b) {
- case 0x00: b = 4; break;
- case 0x80: b = 3; break;
- case 0x40: b = 2; break;
- default: b = 5; break;
+ case 0x00: b = 4; break;
+ case 0x80: b = 3; break;
+ case 0x40: b = 2; break;
+ default: b = 5; break;
}
setup_counts[index] = b;
* This routine writes the prepared setup/active/recovery counts
* for a drive into the cmd640 chipset registers to active them.
*/
-static void program_drive_counts (unsigned int index)
+static void program_drive_counts(ide_drive_t *drive, unsigned int index)
{
unsigned long flags;
u8 setup_count = setup_counts[index];
* so we merge the timings, using the slowest value for each timing.
*/
if (index > 1) {
- unsigned int mate;
- if (cmd_drives[mate = index ^ 1]->present) {
+ ide_hwif_t *hwif = drive->hwif;
+ ide_drive_t *peer = &hwif->drives[!drive->select.b.unit];
+ unsigned int mate = index ^ 1;
+
+ if (peer->present) {
if (setup_count < setup_counts[mate])
setup_count = setup_counts[mate];
if (active_count < active_counts[mate])
* Convert setup_count to internal chipset representation
*/
switch (setup_count) {
- case 4: setup_count = 0x00; break;
- case 3: setup_count = 0x80; break;
- case 1:
- case 2: setup_count = 0x40; break;
- default: setup_count = 0xc0; /* case 5 */
+ case 4: setup_count = 0x00; break;
+ case 3: setup_count = 0x80; break;
+ case 1:
+ case 2: setup_count = 0x40; break;
+ default: setup_count = 0xc0; /* case 5 */
}
/*
/*
* Set a specific pio_mode for a drive
*/
-static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle_time)
+static void cmd640_set_mode(ide_drive_t *drive, unsigned int index,
+ u8 pio_mode, unsigned int cycle_time)
{
int setup_time, active_time, recovery_time, clock_time;
u8 setup_count, active_count, recovery_count, recovery_count2, cycle_count;
active_time = ide_pio_timings[pio_mode].active_time;
recovery_time = cycle_time - (setup_time + active_time);
clock_time = 1000 / bus_speed;
- cycle_count = (cycle_time + clock_time - 1) / clock_time;
+ cycle_count = DIV_ROUND_UP(cycle_time, clock_time);
- setup_count = (setup_time + clock_time - 1) / clock_time;
+ setup_count = DIV_ROUND_UP(setup_time, clock_time);
- active_count = (active_time + clock_time - 1) / clock_time;
+ active_count = DIV_ROUND_UP(active_time, clock_time);
if (active_count < 2)
active_count = 2; /* minimum allowed by cmd640 */
- recovery_count = (recovery_time + clock_time - 1) / clock_time;
+ recovery_count = DIV_ROUND_UP(recovery_time, clock_time);
recovery_count2 = cycle_count - (setup_count + active_count);
if (recovery_count2 > recovery_count)
recovery_count = recovery_count2;
* 1) this is the wrong place to do it (proper is do_special() in ide.c)
* 2) in practice this is rarely, if ever, necessary
*/
- program_drive_counts (index);
+ program_drive_counts(drive, index);
}
static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
unsigned int index = 0, cycle_time;
u8 b;
- while (drive != cmd_drives[index]) {
- if (++index > 3) {
- printk(KERN_ERR "%s: bad news in %s\n",
- drive->name, __FUNCTION__);
- return;
- }
- }
switch (pio) {
- case 6: /* set fast-devsel off */
- case 7: /* set fast-devsel on */
- b = get_cmd640_reg(CNTRL) & ~0x27;
- if (pio & 1)
- b |= 0x27;
- put_cmd640_reg(CNTRL, b);
- printk("%s: %sabled cmd640 fast host timing (devsel)\n", drive->name, (pio & 1) ? "en" : "dis");
- return;
-
- case 8: /* set prefetch off */
- case 9: /* set prefetch on */
- set_prefetch_mode(index, pio & 1);
- printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis");
- return;
+ case 6: /* set fast-devsel off */
+ case 7: /* set fast-devsel on */
+ b = get_cmd640_reg(CNTRL) & ~0x27;
+ if (pio & 1)
+ b |= 0x27;
+ put_cmd640_reg(CNTRL, b);
+ printk("%s: %sabled cmd640 fast host timing (devsel)\n",
+ drive->name, (pio & 1) ? "en" : "dis");
+ return;
+ case 8: /* set prefetch off */
+ case 9: /* set prefetch on */
+ set_prefetch_mode(drive, index, pio & 1);
+ printk("%s: %sabled cmd640 prefetch\n",
+ drive->name, (pio & 1) ? "en" : "dis");
+ return;
}
cycle_time = ide_pio_cycle_time(drive, pio);
- cmd640_set_mode(index, pio, cycle_time);
+ cmd640_set_mode(drive, index, pio, cycle_time);
printk("%s: selected cmd640 PIO mode%d (%dns)",
drive->name, pio, cycle_time);
display_clocks(index);
}
+static const struct ide_port_ops cmd640_port_ops = {
+ .set_pio_mode = cmd640_set_pio_mode,
+};
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
static int pci_conf1(void)
return 0;
}
+static const struct ide_port_info cmd640_port_info __initdata = {
+ .chipset = ide_cmd640,
+ .host_flags = IDE_HFLAG_SERIALIZE |
+ IDE_HFLAG_NO_DMA |
+ IDE_HFLAG_NO_AUTOTUNE |
+ IDE_HFLAG_ABUSE_PREFETCH |
+ IDE_HFLAG_ABUSE_FAST_DEVSEL,
+#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
+ .port_ops = &cmd640_port_ops,
+ .pio_mask = ATA_PIO5,
+#endif
+};
+
+static int cmd640x_init_one(unsigned long base, unsigned long ctl)
+{
+ if (!request_region(base, 8, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+ DRV_NAME, base, base + 7);
+ return -EBUSY;
+ }
+
+ if (!request_region(ctl, 1, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+ DRV_NAME, ctl);
+ release_region(base, 8);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
/*
* Probe for a cmd640 chipset, and initialize it if found.
*/
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
int second_port_toggled = 0;
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
- int second_port_cmd640 = 0;
+ int second_port_cmd640 = 0, rc;
const char *bus_type, *port2;
unsigned int index;
u8 b, cfr;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ hw_regs_t hw[2];
if (cmd640_vlb && probe_for_cmd640_vlb()) {
bus_type = "VLB";
cfr = get_cmd640_reg(CFR);
cmd640_chip_version = cfr & CFR_DEVREV;
if (cmd640_chip_version == 0) {
- printk ("ide: bad cmd640 revision: %d\n", cmd640_chip_version);
+ printk("ide: bad cmd640 revision: %d\n", cmd640_chip_version);
return 0;
}
+ rc = cmd640x_init_one(0x1f0, 0x3f6);
+ if (rc)
+ return rc;
+
+ rc = cmd640x_init_one(0x170, 0x376);
+ if (rc) {
+ release_region(0x3f6, 1);
+ release_region(0x1f0, 8);
+ return rc;
+ }
+
+ memset(&hw, 0, sizeof(hw));
+
+ ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
+ hw[0].irq = 14;
+
+ ide_std_init_ports(&hw[1], 0x170, 0x376);
+ hw[1].irq = 15;
+
+ printk(KERN_INFO "cmd640: buggy cmd640%c interface on %s, config=0x%02x"
+ "\n", 'a' + cmd640_chip_version - 1, bus_type, cfr);
+
+ cmd_hwif0 = ide_find_port();
+
/*
* Initialize data for primary port
*/
- setup_device_ptrs ();
- printk("%s: buggy cmd640%c interface on %s, config=0x%02x\n",
- cmd_hwif0->name, 'a' + cmd640_chip_version - 1, bus_type, cfr);
- cmd_hwif0->chipset = ide_cmd640;
-#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
- cmd_hwif0->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
- IDE_HFLAG_ABUSE_FAST_DEVSEL;
- cmd_hwif0->pio_mask = ATA_PIO5;
- cmd_hwif0->set_pio_mode = &cmd640_set_pio_mode;
-#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
-
- idx[0] = cmd_hwif0->index;
+ if (cmd_hwif0) {
+ ide_init_port_hw(cmd_hwif0, &hw[0]);
+ idx[0] = cmd_hwif0->index;
+ }
/*
* Ensure compatibility by always using the slowest timings
put_cmd640_reg(CMDTIM, 0);
put_cmd640_reg(BRST, 0x40);
+ cmd_hwif1 = ide_find_port();
+
/*
* Try to enable the secondary interface, if not already enabled
*/
- if (cmd_hwif1->noprobe) {
+ if (cmd_hwif1 &&
+ cmd_hwif1->drives[0].noprobe && cmd_hwif1->drives[1].noprobe) {
port2 = "not probed";
} else {
b = get_cmd640_reg(CNTRL);
/*
* Initialize data for secondary cmd640 port, if enabled
*/
- if (second_port_cmd640) {
- cmd_hwif0->serialized = 1;
- cmd_hwif1->serialized = 1;
- cmd_hwif1->chipset = ide_cmd640;
- cmd_hwif0->mate = cmd_hwif1;
- cmd_hwif1->mate = cmd_hwif0;
- cmd_hwif1->channel = 1;
-#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
- cmd_hwif1->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
- IDE_HFLAG_ABUSE_FAST_DEVSEL;
- cmd_hwif1->pio_mask = ATA_PIO5;
- cmd_hwif1->set_pio_mode = &cmd640_set_pio_mode;
-#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
-
+ if (second_port_cmd640 && cmd_hwif1) {
+ ide_init_port_hw(cmd_hwif1, &hw[1]);
idx[1] = cmd_hwif1->index;
}
- printk(KERN_INFO "%s: %sserialized, secondary interface %s\n", cmd_hwif1->name,
- cmd_hwif0->serialized ? "" : "not ", port2);
+ printk(KERN_INFO "cmd640: %sserialized, secondary interface %s\n",
+ second_port_cmd640 ? "" : "not ", port2);
/*
* Establish initial timings/prefetch for all drives.
* Do not unnecessarily disturb any prior BIOS setup of these.
*/
for (index = 0; index < (2 + (second_port_cmd640 << 1)); index++) {
- ide_drive_t *drive = cmd_drives[index];
+ ide_drive_t *drive;
+
+ if (index > 1) {
+ if (cmd_hwif1 == NULL)
+ continue;
+ drive = &cmd_hwif1->drives[index & 1];
+ } else {
+ if (cmd_hwif0 == NULL)
+ continue;
+ drive = &cmd_hwif0->drives[index & 1];
+ }
+
#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
if (drive->autotune || ((index > 1) && second_port_toggled)) {
- /*
- * Reset timing to the slowest speed and turn off prefetch.
- * This way, the drive identify code has a better chance.
+ /*
+ * Reset timing to the slowest speed and turn off
+ * prefetch. This way, the drive identify code has
+ * a better chance.
*/
setup_counts [index] = 4; /* max possible */
active_counts [index] = 16; /* max possible */
recovery_counts [index] = 16; /* max possible */
- program_drive_counts (index);
- set_prefetch_mode (index, 0);
+ program_drive_counts(drive, index);
+ set_prefetch_mode(drive, index, 0);
printk("cmd640: drive%d timings/prefetch cleared\n", index);
} else {
/*
* This preserves any prior BIOS setup.
*/
retrieve_drive_counts (index);
- check_prefetch (index);
+ check_prefetch(drive, index);
printk("cmd640: drive%d timings/prefetch(%s) preserved",
index, drive->no_io_32bit ? "off" : "on");
display_clocks(index);
/*
* Set the drive unmask flags to match the prefetch setting
*/
- check_prefetch (index);
+ check_prefetch(drive, index);
printk("cmd640: drive%d timings/prefetch(%s) preserved\n",
index, drive->no_io_32bit ? "off" : "on");
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
cmd640_dump_regs();
#endif
- ide_device_add(idx);
+ ide_device_add(idx, &cmd640_port_info);
return 1;
}
MODULE_PARM_DESC(probe_vlb, "probe for VLB version of CMD640 chipset");
module_init(cmd640x_init);
+
+MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff