patch-2.1.129 linux/drivers/macintosh/mediabay.c

• Lines: 416
• Date: Sun Nov 15 10:51:47 1998
• Orig file: v2.1.128/linux/drivers/macintosh/mediabay.c
• Orig date: Sun Nov 8 14:02:59 1998

diff -u --recursive --new-file v2.1.128/linux/drivers/macintosh/mediabay.c linux/drivers/macintosh/mediabay.c
@@ -8,6 +8,8 @@
  *  as published by the Free Software Foundation; either version
  *  2 of the License, or (at your option) any later version.
  */
+#define __KERNEL_SYSCALLS__
+
 #include <linux/config.h>
 #include <linux/types.h>
 #include <linux/errno.h>
@@ -16,44 +18,54 @@
 #include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/hdreg.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
 #include <asm/prom.h>
 #include <asm/pgtable.h>
 #include <asm/io.h>
-#include <asm/ohare.h>
+#include <asm/feature.h>
 #include <asm/mediabay.h>
 #include <asm/init.h>
 
+
+#undef MB_USE_INTERRUPTS
+
 struct media_bay_hw {
 	unsigned char	b0;
 	unsigned char	contents;
 	unsigned char	b2;
 	unsigned char	b3;
-	unsigned	feature;
 };
 
-static volatile struct media_bay_hw *mb_addr;
+struct media_bay_info {
+	volatile struct media_bay_hw*	addr;
+	int				content_id;
+	int				previous_id;
+	int				ready;
+	int				last_value;
+	int				value_count;
+	int				reset_timer;
+	struct device_node*		dev_node;
+#ifdef CONFIG_BLK_DEV_IDE
+	unsigned long			cd_base;
+	int 				cd_index;
+	int				cd_irq;
+	int				cd_timer;
+#endif
+};
 
-#define MB_CONTENTS()	((in_8(&mb_addr->contents) >> 4) & 7)
-#define SET_FEATURES(set, clr) \
-	out_le32(&mb_addr->feature, \
-		 (in_le32(&mb_addr->feature) & ~(clr)) | (set));
+#define MAX_BAYS	2
 
-static int media_bay_id = -1;
-static int mb_ready;
-static int mb_last_value;
-static int mb_value_count;
+static volatile struct media_bay_info media_bays[MAX_BAYS];
+int media_bay_count = 0;
 
-int media_bay_present;
+#define MB_CONTENTS(i)	((in_8(&media_bays[i].addr->contents) >> 4) & 7)
 
 #ifdef CONFIG_BLK_DEV_IDE
-unsigned long mb_cd_base;
-int mb_cd_index = -1;
-int mb_cd_irq;
-
 /* check the busy bit in the media-bay ide interface
    (assumes the media-bay contains an ide device) */
-#define MB_IDE_READY()	((in_8((volatile unsigned char *) \
-			       (mb_cd_base + 0x70)) & 0x80) == 0)
+#define MB_IDE_READY(i)	((in_8((volatile unsigned char *) \
+			       (media_bays[i].cd_base + 0x70)) & 0x80) == 0)
 #endif
 
 /*
@@ -66,16 +78,17 @@
  * Hold the media-bay reset signal true for this many ticks
  * after a device is inserted before releasing it.
  */
-#define MB_RESET_COUNT	10
+#define MB_RESET_COUNT	20
 
 /*
  * Wait this many ticks after an IDE device (e.g. CD-ROM) is inserted
  * (or until the device is ready) before registering the IDE interface.
  */
-#define MB_IDE_WAIT	500
+#define MB_IDE_WAIT	1000
 
-static void poll_media_bay(void);
-static void set_media_bay(int id);
+static void poll_media_bay(int which);
+static void set_media_bay(int which, int id);
+static int media_bay_task(void *);
 
 /*
  * It seems that the bit for the media-bay interrupt in the IRQ_LEVEL
@@ -92,29 +105,62 @@
 media_bay_init(void)
 {
 	struct device_node *np;
-
-	np = find_devices("media-bay");
-	if (np == NULL || np->n_addrs == 0)
-		return;
-	mb_addr = (volatile struct media_bay_hw *)
-		ioremap(np->addrs[0].address, sizeof(struct media_bay_hw));
-
-#if 0
-	if (np->n_intrs == 0) {
-		printk(KERN_WARNING "No interrupt for media bay?\n");
-	} else {
-		if (request_irq(np->intrs[0].line, media_bay_intr, 0,
-				"Media bay", NULL))
-			printk(KERN_WARNING "Couldn't get IRQ %d for "
-			       "media bay\n", np->intrs[0].line);
+	int		n,i;
+	
+	for (i=0; i<MAX_BAYS; i++)
+	{
+		memset((char *)&media_bays[i], 0, sizeof(struct media_bay_info));
+		media_bays[i].content_id	= -1;
+#ifdef CONFIG_BLK_DEV_IDE
+		media_bays[i].cd_index		= -1;
+#endif
 	}
+	
+	np = find_devices("media-bay");
+	n = 0;
+	while(np && (n<MAX_BAYS))
+	{
+		if (np->n_addrs == 0)
+			continue;
+		media_bays[n].addr = (volatile struct media_bay_hw *)
+			ioremap(np->addrs[0].address, sizeof(struct media_bay_hw));
+
+#ifdef MB_USE_INTERRUPTS
+		if (np->n_intrs == 0)
+		{
+			printk(KERN_ERR "media bay %d has no irq\n",n);
+			continue;
+		}
+		
+		if (request_irq(np_intrs[0].line, media_bay_intr, 0, "Media bay", NULL))
+		{
+			printk(KERN_ERR "Couldn't get IRQ %d for media bay %d\n", irq, n);
+			continue;
+		}
+#endif	
+		media_bay_count++;
+	
+		set_media_bay(n, MB_CONTENTS(n));
+		if (media_bays[n].content_id != MB_NO) {
+			feature_clear(media_bays[n].dev_node, FEATURE_Mediabay_reset);
+			udelay(500);
+		}
+		media_bays[n].ready		= 1;
+		media_bays[n].previous_id	= media_bays[n].content_id;
+		media_bays[n].reset_timer	= 0;
+		media_bays[n].dev_node		= np;
+#ifdef CONFIG_BLK_DEV_IDE
+		media_bays[n].cd_timer		= 0;
 #endif
+		n++;
+		np=np->next;
+	}
+	
+	if (media_bay_count)
+	{
+		printk(KERN_INFO "Registered %d media-bay(s)\n", media_bay_count);
 
-	media_bay_present = 1;
-	set_media_bay(MB_CONTENTS());
-	if (media_bay_id != MB_NO) {
-		SET_FEATURES(0, OH_BAY_RESET);
-		mb_ready = 1;
+		kernel_thread(media_bay_task, NULL, 0);
 	}
 }
 
@@ -130,9 +176,61 @@
 #endif
 
 int
-check_media_bay(int what)
+check_media_bay(struct device_node *which_bay, int what)
 {
-	return what == media_bay_id && mb_ready;
+#ifdef CONFIG_BLK_DEV_IDE
+	int	i;
+	
+	for (i=0; i<media_bay_count; i++)
+		if (which_bay == media_bays[i].dev_node)
+		{
+			if ((what == media_bays[i].content_id) && media_bays[i].ready)
+				return 0;
+			media_bays[i].cd_index = -1;
+			return -EINVAL;
+		}
+#endif /* CONFIG_BLK_DEV_IDE */
+	return -ENODEV;
+}
+
+int
+check_media_bay_by_base(unsigned long base, int what)
+{
+	int	i;
+
+#ifdef CONFIG_BLK_DEV_IDE
+	for (i=0; i<media_bay_count; i++)
+		if (base == media_bays[i].cd_base)
+		{
+			if ((what == media_bays[i].content_id) && media_bays[i].ready)
+				return 0;
+			media_bays[i].cd_index = -1;
+			return -EINVAL;
+		} 
+#endif
+	
+	return -ENODEV;
+}
+
+int
+media_bay_set_ide_infos(struct device_node* which_bay, unsigned long base,
+	int irq, int index)
+{
+	int	i;
+	
+#ifdef CONFIG_BLK_DEV_IDE
+	for (i=0; i<media_bay_count; i++)
+		if (which_bay == media_bays[i].dev_node)
+		{
+ 			media_bays[i].cd_base	= base;
+			media_bays[i].cd_irq	= irq;
+			media_bays[i].cd_index	= index;
+			printk(KERN_DEBUG "Registered ide %d for media bay %d\n", index, i);			
+			return 0;
+		} 
+#endif
+	
+	return -ENODEV;
 }
 
 /*
@@ -144,95 +242,112 @@
 int
 media_bay_task(void *x)
 {
-	int prev = media_bay_id;
-	int reset_timer = 0;
-#ifdef CONFIG_BLK_DEV_IDE
-	int cd_timer = 0;
-#endif
-
+	volatile struct media_bay_info* bay;
+	int	i = 0;
+	
 	strcpy(current->comm, "media-bay");
-	for (;;) {
-		poll_media_bay();
-		if (media_bay_id != prev) {
-			reset_timer = (media_bay_id != MB_NO)?
+	for (;;)
+	{
+		bay = &media_bays[i];
+		poll_media_bay(i);
+		if (bay->content_id != bay->previous_id) {
+			bay->reset_timer = (bay->content_id != MB_NO) ?
 				MB_RESET_COUNT: 0;
-			mb_ready = 0;
+			bay->ready = 0;
 #ifdef CONFIG_BLK_DEV_IDE
-			cd_timer = 0;
-			if (media_bay_id != MB_CD && mb_cd_index >= 0) {
-				printk(KERN_DEBUG "Unregistering mb ide\n");
-				ide_unregister(mb_cd_index);
-				mb_cd_index = -1;
+			bay->cd_timer = 0;
+			if (bay->content_id != MB_CD && bay->cd_index >= 0) {
+				printk(KERN_DEBUG "Unregistering mb %d ide, index:%d\n", i, bay->cd_index);
+				ide_unregister(bay->cd_index);
+				bay->cd_index = -1;
 			}
 #endif
-		} else if (reset_timer) {
-			if (--reset_timer == 0) {
-				SET_FEATURES(0, OH_BAY_RESET);
-				mb_ready = 1;
+		} else if (bay->reset_timer) {
+			if (--bay->reset_timer == 0) {
+ 				feature_clear(bay->dev_node, FEATURE_Mediabay_reset);
+				bay->ready = 1;
 #ifdef CONFIG_BLK_DEV_IDE
-				if (media_bay_id == MB_CD && mb_cd_base != 0)
-					cd_timer = MB_IDE_WAIT;
+				bay->cd_timer = 0;
+				if (bay->content_id == MB_CD && bay->cd_base != 0)
+					bay->cd_timer = MB_IDE_WAIT;
 #endif
 			}
 #ifdef CONFIG_BLK_DEV_IDE
-		} else if (cd_timer && (--cd_timer == 0 || MB_IDE_READY())
-			   && mb_cd_index < 0) {
-			mb_cd_index = ide_register(mb_cd_base, 0, mb_cd_irq);
-			printk(KERN_DEBUG "media-bay is ide %d\n", mb_cd_index);
+		} else if (bay->cd_timer && (--bay->cd_timer == 0 || MB_IDE_READY(i))
+			   && bay->cd_index < 0) {
+			bay->cd_timer = 0;
+			printk(KERN_DEBUG "Registering IDE, base:0x%08lx, irq:%d\n", bay->cd_base, bay->cd_irq);
+			printk("\n");
+			bay->cd_index = ide_register(bay->cd_base, 0, bay->cd_irq);
+			if (bay->cd_index == -1)
+				printk("\nCD-ROM badly inserted. Remove it and try again !\n");
+			else
+				printk(KERN_DEBUG "media-bay %d is ide %d\n", i, bay->cd_index);
 #endif
 		}
 
-		prev = media_bay_id;
+		bay->previous_id = bay->content_id;
 		current->state = TASK_INTERRUPTIBLE;
 		schedule_timeout(1);
 		if (signal_pending(current))
 			return 0;
+		i = (i+1)%media_bay_count;
 	}
 }
 
 void
-poll_media_bay(void)
+poll_media_bay(int which)
 {
-	int id = MB_CONTENTS();
+	int id = MB_CONTENTS(which);
 
-	if (id == mb_last_value) {
-		if (id != media_bay_id
-		    && ++mb_value_count >= MB_STABLE_COUNT)
-			set_media_bay(id);
+	if (id == media_bays[which].last_value) {
+		if (id != media_bays[which].content_id
+		    && ++media_bays[which].value_count >= MB_STABLE_COUNT)
+ 			set_media_bay(which, id);
 	} else {
-		mb_last_value = id;
-		mb_value_count = 0;
+		media_bays[which].last_value = id;
+		media_bays[which].value_count = 0;
 	}
 }
 
 static void
-set_media_bay(int id)
+set_media_bay(int which, int id)
 {
-	u32 clr, set;
+	volatile struct media_bay_info* bay;
 
-	media_bay_id = id;
-	mb_last_value = id;
-	clr = OH_FLOPPY_ENABLE | OH_IDECD_POWER;
-	set = 0;
+	bay = &media_bays[which];
+	
+	bay->content_id = id;
+	bay->last_value = id;
+	
 	switch (id) {
 	case MB_CD:
-		set = OH_BAY_ENABLE | OH_IDECD_POWER | OH_BAY_IDE_ENABLE;
-		printk(KERN_INFO "media bay contains a CD-ROM drive\n");
+		feature_clear(bay->dev_node, FEATURE_Mediabay_floppy_enable);
+		feature_set(bay->dev_node, FEATURE_Mediabay_enable);
+		feature_set(bay->dev_node, FEATURE_CD_power);
+		feature_set(bay->dev_node, FEATURE_Mediabay_IDE_enable);
+		printk(KERN_INFO "media bay %d contains a CD-ROM drive\n", which);
 		break;
 	case MB_FD:
-		set = OH_BAY_ENABLE | OH_BAY_FLOPPY_ENABLE | OH_FLOPPY_ENABLE;
-		printk(KERN_INFO "media bay contains a floppy disk drive\n");
+		feature_clear(bay->dev_node, FEATURE_CD_power);
+		feature_set(bay->dev_node, FEATURE_Mediabay_enable);
+		feature_set(bay->dev_node, FEATURE_Mediabay_floppy_enable);
+		feature_set(bay->dev_node, FEATURE_SWIM3_enable);
+		printk(KERN_INFO "media bay %d contains a floppy disk drive\n", which);
 		break;
 	case MB_NO:
-		printk(KERN_INFO "media bay is empty\n");
+		feature_clear(bay->dev_node, FEATURE_Mediabay_floppy_enable);
+		feature_clear(bay->dev_node, FEATURE_CD_power);
+		printk(KERN_INFO "media bay %d is empty\n", which);
 		break;
 	default:
-		set = OH_BAY_ENABLE;
-		printk(KERN_INFO "media bay contains an unknown device (%d)\n",
-		       id);
+		feature_clear(bay->dev_node, FEATURE_Mediabay_floppy_enable);
+		feature_clear(bay->dev_node, FEATURE_CD_power);
+		feature_set(bay->dev_node, FEATURE_Mediabay_enable);
+		printk(KERN_INFO "media bay %d contains an unknown device (%d)\n",
+		       which, id);
 		break;
 	}
-
-	SET_FEATURES(set, clr);
-	printk(KERN_DEBUG "feature reg now %x\n", in_le32(&mb_addr->feature));
+	
+	udelay(500);
 }