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Subjectsys & legacy buses plus interrupt controller and IDE support
Hi!

Here it goes. For now I only put one device on each bus (sys &
legacy), but I'll quickly expand it once merged. Please apply,

Pavel

--- linux/arch/i386/kernel/i8259.c Thu Jan 31 23:39:28 2002
+++ linux-dm/arch/i386/kernel/i8259.c Tue Feb 12 09:48:48 2002
@@ -11,6 +11,7 @@
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/kernel_stat.h>
+#include <linux/device.h>

#include <asm/atomic.h>
#include <asm/system.h>
@@ -333,6 +334,19 @@
goto handle_real_irq;
}
}
+
+static struct device device_i8259A = {
+ name: "i8259A",
+ bus_id: "0020",
+ parent: &device_sys,
+};
+
+static void __init init_8259A_devicefs(void)
+{
+ device_register(&device_i8259A);
+}
+
+__initcall(init_8259A_devicefs);

void __init init_8259A(int auto_eoi)
{
--- linux/drivers/base/core.c Mon Feb 11 20:51:46 2002
+++ linux-dm/drivers/base/core.c Mon Feb 11 23:35:55 2002
@@ -24,6 +24,18 @@
name: "System Root",
};

+struct device device_sys = {
+ bus_id: "sys",
+ name: "Bus for motherboard devices",
+ parent: &device_root,
+};
+
+struct device device_legacy = {
+ bus_id: "legacy",
+ name: "Bus for devices on southbridge/X-BUS/ISA",
+ parent: &device_root,
+};
+
int (*platform_notify)(struct device * dev) = NULL;
int (*platform_notify_remove)(struct device * dev) = NULL;

@@ -121,7 +133,13 @@

static int __init device_init_root(void)
{
- return device_register(&device_root);
+ int res;
+ res = device_register(&device_root);
+ if (res) return res;
+ res = device_register(&device_sys);
+ if (res) return res;
+ res = device_register(&device_legacy);
+ if (res) return res;
}

static int __init device_init(void)
--- linux/drivers/ide/ide-disk.c Mon Feb 11 20:51:47 2002
+++ linux-dm/drivers/ide/ide-disk.c Mon Feb 11 23:35:09 2002
@@ -925,12 +925,16 @@
ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
}

+static struct device_driver idedisk_device_driver = {
+};
+
static void idedisk_setup (ide_drive_t *drive)
{
int i;

struct hd_driveid *id = drive->id;
unsigned long capacity;
+ int myid = -1;

idedisk_add_settings(drive);

@@ -953,11 +957,20 @@
ide_hwif_t *hwif = HWIF(drive);

if (drive != &hwif->drives[i]) continue;
+ myid = i;
hwif->gd->de_arr[i] = drive->de;
if (drive->removable)
hwif->gd->flags[i] |= GENHD_FL_REMOVABLE;
break;
}
+ {
+ ide_hwif_t *hwif = HWIF(drive);
+ sprintf(drive->device.bus_id, "%d", myid);
+ sprintf(drive->device.name, "ide-disk");
+ drive->device.driver = &idedisk_device_driver;
+ drive->device.parent = &hwif->device;
+ device_register(&drive->device);
+ }

/* Extract geometry if we did not already have one for the drive */
if (!drive->cyl || !drive->head || !drive->sect) {
@@ -1033,6 +1046,7 @@

static int idedisk_cleanup (ide_drive_t *drive)
{
+ put_device(&drive->device);
if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
if (do_idedisk_flushcache(drive))
printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
--- linux/drivers/ide/ide-probe.c Thu Jan 31 23:39:35 2002
+++ linux-dm/drivers/ide/ide-probe.c Mon Feb 11 23:36:41 2002
@@ -469,6 +469,11 @@

static void hwif_register (ide_hwif_t *hwif)
{
+ sprintf(hwif->device.bus_id, "%04x", hwif->io_ports[IDE_DATA_OFFSET]);
+ sprintf(hwif->device.name, "ide");
+ hwif->device.driver_data = hwif;
+ hwif->device.parent = &device_legacy;
+ device_register(&hwif->device);
if (((unsigned long)hwif->io_ports[IDE_DATA_OFFSET] | 7) ==
((unsigned long)hwif->io_ports[IDE_STATUS_OFFSET])) {
ide_request_region(hwif->io_ports[IDE_DATA_OFFSET], 8, hwif->name);
--- linux/drivers/ide/ide.c Mon Feb 11 20:51:47 2002
+++ linux-dm/drivers/ide/ide.c Mon Feb 11 23:35:09 2002
@@ -2027,6 +2024,7 @@
hwif = &ide_hwifs[index];
if (!hwif->present)
goto abort;
+ put_device(&hwif->device);
for (unit = 0; unit < MAX_DRIVES; ++unit) {
drive = &hwif->drives[unit];
if (!drive->present)
--- linux/include/linux/device.h Mon Feb 11 21:10:52 2002
+++ linux-dm/include/linux/device.h Mon Feb 11 23:35:09 2002
@@ -162,5 +142,7 @@
}

extern void put_device(struct device * dev);
+extern struct device device_legacy;
+extern struct device device_sys;

#endif /* _DEVICE_H_ */
--- linux/include/linux/ide.h Mon Feb 11 21:15:04 2002
+++ linux-dm/include/linux/ide.h Mon Feb 11 23:35:09 2002
@@ -14,6 +14,7 @@
#include <linux/blkdev.h>
#include <linux/proc_fs.h>
#include <linux/devfs_fs_kernel.h>
+#include <linux/device.h>
#include <asm/hdreg.h>

/*
@@ -448,6 +449,7 @@
byte acoustic; /* acoustic management */
unsigned int failures; /* current failure count */
unsigned int max_failures; /* maximum allowed failure count */
+ struct device device;
} ide_drive_t;

/*
@@ -580,6 +582,7 @@
void *hwif_data; /* extra hwif data */
ide_busproc_t *busproc; /* driver soft-power interface */
byte bus_state; /* power state of the IDE bus */
+ struct device device;
} ide_hwif_t;

/*
--
(about SSSCA) "I don't say this lightly. However, I really think that the U.S.
no longer is classifiable as a democracy, but rather as a plutocracy." --hpa
-
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