X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fsnsc.c;h=52753e723eaae5cf361a5b06cc097b2a7ce0da25;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=9d027ec553852fc6e3f8b49dfd72aa2b19590dc5;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git

diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
index 9d027ec55..52753e723 100644
--- a/drivers/char/snsc.c
+++ b/drivers/char/snsc.c
@@ -5,7 +5,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 2004, 2006 Silicon Graphics, Inc. All rights reserved.
  */
 
 /*
@@ -34,7 +34,7 @@
 #define SCDRV_TIMEOUT	1000
 
 static irqreturn_t
-scdrv_interrupt(int irq, void *subch_data, struct pt_regs *regs)
+scdrv_interrupt(int irq, void *subch_data)
 {
 	struct subch_data_s *sd = subch_data;
 	unsigned long flags;
@@ -77,7 +77,7 @@ scdrv_open(struct inode *inode, struct file *file)
 	scd = container_of(inode->i_cdev, struct sysctl_data_s, scd_cdev);
 
 	/* allocate memory for subchannel data */
-	sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
+	sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
 	if (sd == NULL) {
 		printk("%s: couldn't allocate subchannel data\n",
 		       __FUNCTION__);
@@ -85,7 +85,6 @@ scdrv_open(struct inode *inode, struct file *file)
 	}
 
 	/* initialize subch_data_s fields */
-	memset(sd, 0, sizeof (struct subch_data_s));
 	sd->sd_nasid = scd->scd_nasid;
 	sd->sd_subch = ia64_sn_irtr_open(scd->scd_nasid);
 
@@ -106,7 +105,7 @@ scdrv_open(struct inode *inode, struct file *file)
 
 	/* hook this subchannel up to the system controller interrupt */
 	rv = request_irq(SGI_UART_VECTOR, scdrv_interrupt,
-			 SA_SHIRQ | SA_INTERRUPT,
+			 IRQF_SHARED | IRQF_DISABLED,
 			 SYSCTL_BASENAME, sd);
 	if (rv) {
 		ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
@@ -192,8 +191,8 @@ scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
 		}
 
 		len = CHUNKSIZE;
-		add_wait_queue(&sd->sd_rq, &wait);
 		set_current_state(TASK_INTERRUPTIBLE);
+		add_wait_queue(&sd->sd_rq, &wait);
 		spin_unlock_irqrestore(&sd->sd_rlock, flags);
 
 		schedule_timeout(SCDRV_TIMEOUT);
@@ -288,8 +287,8 @@ scdrv_write(struct file *file, const char __user *buf,
 			return -EAGAIN;
 		}
 
-		add_wait_queue(&sd->sd_wq, &wait);
 		set_current_state(TASK_INTERRUPTIBLE);
+		add_wait_queue(&sd->sd_wq, &wait);
 		spin_unlock_irqrestore(&sd->sd_wlock, flags);
 
 		schedule_timeout(SCDRV_TIMEOUT);
@@ -348,7 +347,7 @@ scdrv_poll(struct file *file, struct poll_table_struct *wait)
 	return mask;
 }
 
-static struct file_operations scdrv_fops = {
+static const struct file_operations scdrv_fops = {
 	.owner =	THIS_MODULE,
 	.read =		scdrv_read,
 	.write =	scdrv_write,
@@ -357,6 +356,8 @@ static struct file_operations scdrv_fops = {
 	.release =	scdrv_release,
 };
 
+static struct class *snsc_class;
+
 /*
  * scdrv_init
  *
@@ -372,27 +373,33 @@ scdrv_init(void)
 	char *devnamep;
 	struct sysctl_data_s *scd;
 	void *salbuf;
-	struct class_simple *snsc_class;
 	dev_t first_dev, dev;
+	nasid_t event_nasid;
 
-	if (alloc_chrdev_region(&first_dev, 0, numionodes,
+	if (!ia64_platform_is("sn2"))
+		return -ENODEV;
+
+	event_nasid = ia64_sn_get_console_nasid();
+
+	if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
 				SYSCTL_BASENAME) < 0) {
 		printk("%s: failed to register SN system controller device\n",
 		       __FUNCTION__);
 		return -ENODEV;
 	}
-	snsc_class = class_simple_create(THIS_MODULE, SYSCTL_BASENAME);
+	snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
 
-	for (cnode = 0; cnode < numionodes; cnode++) {
+	for (cnode = 0; cnode < num_cnodes; cnode++) {
 			geoid = cnodeid_get_geoid(cnode);
 			devnamep = devname;
 			format_module_id(devnamep, geo_module(geoid),
 					 MODULE_FORMAT_BRIEF);
 			devnamep = devname + strlen(devname);
-			sprintf(devnamep, "#%d", geo_slab(geoid));
+			sprintf(devnamep, "^%d#%d", geo_slot(geoid),
+				geo_slab(geoid));
 
 			/* allocate sysctl device data */
-			scd = kmalloc(sizeof (struct sysctl_data_s),
+			scd = kzalloc(sizeof (struct sysctl_data_s),
 				      GFP_KERNEL);
 			if (!scd) {
 				printk("%s: failed to allocate device info"
@@ -400,7 +407,6 @@ scdrv_init(void)
 				       SYSCTL_BASENAME, devname);
 				continue;
 			}
-			memset(scd, 0, sizeof (struct sysctl_data_s));
 
 			/* initialize sysctl device data fields */
 			scd->scd_nasid = cnodeid_to_nasid(cnode);
@@ -435,12 +441,19 @@ scdrv_init(void)
 				continue;
 			}
 
-			class_simple_device_add(snsc_class, dev, NULL,
+			class_device_create(snsc_class, NULL, dev, NULL,
 						"%s", devname);
 
 			ia64_sn_irtr_intr_enable(scd->scd_nasid,
 						 0 /*ignored */ ,
 						 SAL_IROUTER_INTR_RECV);
+
+                        /* on the console nasid, prepare to receive
+                         * system controller environmental events
+                         */
+                        if(scd->scd_nasid == event_nasid) {
+                                scdrv_event_init(scd);
+                        }
 	}
 	return 0;
 }