Merge ../torvalds-2.6/

10 files changed, 59 insertions, 54 deletions

diff --git a/drivers/s390/block/Kconfig b/drivers/s390/block/Kconfig
index 6e7d7b06421..6f50cc9323d 100644
--- a/drivers/s390/block/Kconfig
+++ b/drivers/s390/block/Kconfig
@@ -1,11 +1,11 @@
-if ARCH_S390
+if S390
 
 comment "S/390 block device drivers"
-	depends on ARCH_S390
+	depends on S390
 
 config BLK_DEV_XPRAM
 	tristate "XPRAM disk support"
-	depends on ARCH_S390
+	depends on S390
 	help
 	  Select this option if you want to use your expanded storage on S/390
 	  or zSeries as a disk.  This is useful as a _fast_ swap device if you
@@ -49,7 +49,7 @@ config DASD_FBA
 
 config DASD_DIAG
 	tristate "Support for DIAG access to Disks"
-	depends on DASD && ( ARCH_S390X = 'n' || EXPERIMENTAL)
+	depends on DASD && ( 64BIT = 'n' || EXPERIMENTAL)
 	help
 	  Select this option if you want to use Diagnose250 command to access
 	  Disks under VM.  If you are not running under VM or unsure what it is,
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 7008d32433b..f779f674dfa 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -7,7 +7,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001
  *
- * $Revision: 1.167 $
+ * $Revision: 1.172 $
  */
 
 #include <linux/config.h>
@@ -604,7 +604,7 @@ dasd_smalloc_request(char *magic, int cplength, int datasize,
 void
 dasd_kfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
 {
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 	struct ccw1 *ccw;
 
 	/* Clear any idals used for the request. */
@@ -1035,7 +1035,7 @@ dasd_end_request(struct request *req, int uptodate)
 	if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
 		BUG();
 	add_disk_randomness(req->rq_disk);
-	end_that_request_last(req);
+	end_that_request_last(req, uptodate);
 }
 
 /*
@@ -1224,6 +1224,12 @@ __dasd_start_head(struct dasd_device * device)
 	if (list_empty(&device->ccw_queue))
 		return;
 	cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list);
+        /* check FAILFAST */
+	if (device->stopped & ~DASD_STOPPED_PENDING &&
+	    test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags)) {
+		cqr->status = DASD_CQR_FAILED;
+		dasd_schedule_bh(device);
+	}
 	if ((cqr->status == DASD_CQR_QUEUED) &&
 	    (!device->stopped)) {
 		/* try to start the first I/O that can be started */
@@ -1323,7 +1329,7 @@ void
 dasd_schedule_bh(struct dasd_device * device)
 {
 	/* Protect against rescheduling. */
-	if (atomic_compare_and_swap (0, 1, &device->tasklet_scheduled))
+	if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0)
 		return;
 	dasd_get_device(device);
 	tasklet_hi_schedule(&device->tasklet);
@@ -1750,8 +1756,10 @@ dasd_exit(void)
  * SECTION: common functions for ccw_driver use
  */
 
-/* initial attempt at a probe function. this can be simplified once
- * the other detection code is gone */
+/*
+ * Initial attempt at a probe function. this can be simplified once
+ * the other detection code is gone.
+ */
 int
 dasd_generic_probe (struct ccw_device *cdev,
 		    struct dasd_discipline *discipline)
@@ -1770,8 +1778,10 @@ dasd_generic_probe (struct ccw_device *cdev,
 	return ret;
 }
 
-/* this will one day be called from a global not_oper handler.
- * It is also used by driver_unregister during module unload */
+/*
+ * This will one day be called from a global not_oper handler.
+ * It is also used by driver_unregister during module unload.
+ */
 void
 dasd_generic_remove (struct ccw_device *cdev)
 {
@@ -1798,9 +1808,11 @@ dasd_generic_remove (struct ccw_device *cdev)
 	dasd_delete_device(device);
 }
 
-/* activate a device. This is called from dasd_{eckd,fba}_probe() when either
+/*
+ * Activate a device. This is called from dasd_{eckd,fba}_probe() when either
  * the device is detected for the first time and is supposed to be used
- * or the user has started activation through sysfs */
+ * or the user has started activation through sysfs.
+ */
 int
 dasd_generic_set_online (struct ccw_device *cdev,
 			 struct dasd_discipline *discipline)
@@ -1917,7 +1929,6 @@ dasd_generic_notify(struct ccw_device *cdev, int event)
 				if (cqr->status == DASD_CQR_IN_IO)
 					cqr->status = DASD_CQR_FAILED;
 			device->stopped |= DASD_STOPPED_DC_EIO;
-			dasd_schedule_bh(device);
 		} else {
 			list_for_each_entry(cqr, &device->ccw_queue, list)
 				if (cqr->status == DASD_CQR_IN_IO) {
@@ -1927,6 +1938,7 @@ dasd_generic_notify(struct ccw_device *cdev, int event)
 			device->stopped |= DASD_STOPPED_DC_WAIT;
 			dasd_set_timer(device, 0);
 		}
+		dasd_schedule_bh(device);
 		ret = 1;
 		break;
 	case CIO_OPER:
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index ab8754e566b..ba80fdea7eb 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -6,7 +6,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
- * $Revision: 1.51 $
+ * $Revision: 1.53 $
  */
 
 #include <linux/config.h>
@@ -25,6 +25,7 @@
 #include <asm/io.h>
 #include <asm/s390_ext.h>
 #include <asm/todclk.h>
+#include <asm/vtoc.h>
 
 #include "dasd_int.h"
 #include "dasd_diag.h"
@@ -74,7 +75,7 @@ dia250(void *iob, int cmd)
 	int rc;
 
 	__asm__ __volatile__(
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 		"	lghi	%0,3\n"
 		"	lgr	0,%3\n"
 		"	diag	0,%2,0x250\n"
@@ -329,7 +330,7 @@ dasd_diag_check_device(struct dasd_device *device)
 	struct dasd_diag_private *private;
 	struct dasd_diag_characteristics *rdc_data;
 	struct dasd_diag_bio bio;
-	struct dasd_diag_cms_label *label;
+	struct vtoc_cms_label *label;
 	blocknum_t end_block;
 	unsigned int sb, bsize;
 	int rc;
@@ -380,7 +381,7 @@ dasd_diag_check_device(struct dasd_device *device)
 	mdsk_term_io(device);
 
 	/* figure out blocksize of device */
-	label = (struct dasd_diag_cms_label *) get_zeroed_page(GFP_KERNEL);
+	label = (struct vtoc_cms_label *) get_zeroed_page(GFP_KERNEL);
 	if (label == NULL)  {
 		DEV_MESSAGE(KERN_WARNING, device, "%s",
 			    "No memory to allocate initialization request");
@@ -548,6 +549,8 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
 	}
 	cqr->retries = DIAG_MAX_RETRIES;
 	cqr->buildclk = get_clock();
+	if (req->flags & REQ_FAILFAST)
+		set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->device = device;
 	cqr->expires = DIAG_TIMEOUT;
 	cqr->status = DASD_CQR_FILLED;
diff --git a/drivers/s390/block/dasd_diag.h b/drivers/s390/block/dasd_diag.h
index df31484d73a..a4f80bd735f 100644
--- a/drivers/s390/block/dasd_diag.h
+++ b/drivers/s390/block/dasd_diag.h
@@ -6,7 +6,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
- * $Revision: 1.8 $
+ * $Revision: 1.9 $
  */
 
 #define MDSK_WRITE_REQ 0x01
@@ -44,29 +44,8 @@ struct dasd_diag_characteristics {
 	u8 rdev_features;
 } __attribute__ ((packed, aligned(4)));
 
-struct dasd_diag_cms_label {
-	u8 label_id[4];
-	u8 vol_id[6];
-	u16 version_id;
-	u32 block_size;
-	u32 origin_ptr;
-	u32 usable_count;
-	u32 formatted_count;
-	u32 block_count;
-	u32 used_count;
-	u32 fst_size;
-	u32 fst_count;
-	u8 format_date[6];
-	u8 reserved1[2];
-	u32 disk_offset;
-	u32 map_block;
-	u32 hblk_disp;
-	u32 user_disp;
-	u8 reserved2[4];
-	u8 segment_name[8];
-} __attribute__ ((packed));
-
-#ifdef CONFIG_ARCH_S390X
+
+#ifdef CONFIG_64BIT
 #define DASD_DIAG_FLAGA_DEFAULT		DASD_DIAG_FLAGA_FORMAT_64BIT
 
 typedef u64 blocknum_t;
@@ -107,7 +86,7 @@ struct dasd_diag_rw_io {
 	struct dasd_diag_bio *bio_list;
 	u8  spare4[8];
 } __attribute__ ((packed, aligned(8)));
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define DASD_DIAG_FLAGA_DEFAULT		0x0
 
 typedef u32 blocknum_t;
@@ -146,4 +125,4 @@ struct dasd_diag_rw_io {
 	u32 interrupt_params;
 	u8 spare3[20];
 } __attribute__ ((packed, aligned(8)));
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 811060e10c0..96eb4825858 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -7,7 +7,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
- * $Revision: 1.71 $
+ * $Revision: 1.74 $
  */
 
 #include <linux/config.h>
@@ -1041,7 +1041,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 				/* Eckd can only do full blocks. */
 				return ERR_PTR(-EINVAL);
 			count += bv->bv_len >> (device->s2b_shift + 9);
-#if defined(CONFIG_ARCH_S390X)
+#if defined(CONFIG_64BIT)
 			if (idal_is_needed (page_address(bv->bv_page),
 					    bv->bv_len))
 				cidaw += bv->bv_len >> (device->s2b_shift + 9);
@@ -1136,6 +1136,8 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 			recid++;
 		}
 	}
+	if (req->flags & REQ_FAILFAST)
+		set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->device = device;
 	cqr->expires = 5 * 60 * HZ;	/* 5 minutes */
 	cqr->lpm = private->path_data.ppm;
@@ -1252,6 +1254,7 @@ dasd_eckd_release(struct block_device *bdev, int no, long args)
 	cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
 	cqr->device = device;
 	clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+	set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->retries = 0;
 	cqr->expires = 2 * HZ;
 	cqr->buildclk = get_clock();
@@ -1296,6 +1299,7 @@ dasd_eckd_reserve(struct block_device *bdev, int no, long args)
 	cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
 	cqr->device = device;
 	clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+	set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->retries = 0;
 	cqr->expires = 2 * HZ;
 	cqr->buildclk = get_clock();
@@ -1339,6 +1343,7 @@ dasd_eckd_steal_lock(struct block_device *bdev, int no, long args)
 	cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
 	cqr->device = device;
 	clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+	set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->retries = 0;
 	cqr->expires = 2 * HZ;
 	cqr->buildclk = get_clock();
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 28cb4613b7f..8ec75dc08e2 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -4,7 +4,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
- * $Revision: 1.40 $
+ * $Revision: 1.41 $
  */
 
 #include <linux/config.h>
@@ -271,7 +271,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 				/* Fba can only do full blocks. */
 				return ERR_PTR(-EINVAL);
 			count += bv->bv_len >> (device->s2b_shift + 9);
-#if defined(CONFIG_ARCH_S390X)
+#if defined(CONFIG_64BIT)
 			if (idal_is_needed (page_address(bv->bv_page),
 					    bv->bv_len))
 				cidaw += bv->bv_len / blksize;
@@ -352,6 +352,8 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 			recid++;
 		}
 	}
+	if (req->flags & REQ_FAILFAST)
+		set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
 	cqr->device = device;
 	cqr->expires = 5 * 60 * HZ;	/* 5 minutes */
 	cqr->retries = 32;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 9fab04f3056..2fb05c4a528 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -6,7 +6,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  *
- * $Revision: 1.65 $
+ * $Revision: 1.68 $
  */
 
 #ifndef DASD_INT_H
@@ -208,6 +208,7 @@ struct dasd_ccw_req {
 
 /* per dasd_ccw_req flags */
 #define DASD_CQR_FLAGS_USE_ERP   0	/* use ERP for this request */
+#define DASD_CQR_FLAGS_FAILFAST  1	/* FAILFAST */
 
 /* Signature for error recovery functions. */
 typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 789595b3fa0..044b7537199 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -7,7 +7,7 @@
  * Bugreports.to..: <Linux390@de.ibm.com>
  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001
  *
- * $Revision: 1.47 $
+ * $Revision: 1.50 $
  *
  * i/o controls for the dasd driver.
  */
@@ -352,6 +352,9 @@ dasd_ioctl_read_profile(struct block_device *bdev, int no, long args)
 	if (device == NULL)
 		return -ENODEV;
 
+	if (dasd_profile_level == DASD_PROFILE_OFF)
+		return -EIO;
+
 	if (copy_to_user((long __user *) args, (long *) &device->profile,
 			 sizeof (struct dasd_profile_info_t)))
 		return -EFAULT;
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 4fde4118899..2e727f49ad1 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -15,7 +15,7 @@
 #include <asm/io.h>
 #include <linux/completion.h>
 #include <linux/interrupt.h>
-#include <asm/ccwdev.h> 	// for s390_root_dev_(un)register()
+#include <asm/s390_rdev.h>
 
 //#define DCSSBLK_DEBUG		/* Debug messages on/off */
 #define DCSSBLK_NAME "dcssblk"
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index d428c909b8a..bf3a67c3cc5 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -160,7 +160,7 @@ static int xpram_page_in (unsigned long page_addr, unsigned int xpage_index)
                 "0: ipm   %0\n"
 		"   srl   %0,28\n"
 		"1:\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 4\n"
 		"   .long  0b,1b\n"
@@ -208,7 +208,7 @@ static long xpram_page_out (unsigned long page_addr, unsigned int xpage_index)
                 "0: ipm   %0\n"
 		"   srl   %0,28\n"
 		"1:\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 4\n"
 		"   .long  0b,1b\n"