Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/g…

…it/scjody/ieee1394

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/scjody/ieee1394:
  ohci1394: cleanup the "Unexpected PCI resource length" warning.
  sbp2: misc debug logging cleanups
  sbp2: proper treatment of DID_OK
  ieee1394: set read permission for parameter disable_irm
  sbp2: check for ARM failure
  ohci1394: clean up asynchronous and physical request filters programming
  ieee1394: remove amdtp remains from ieee1394_core.h
  ieee1394: remove devfs support
  Signed-off-by: Jody McIntyre <[email protected]>
  sbp2: prevent unloading of 1394 low-level driver

drivers/ieee1394/dv1394.c

@@ -73,7 +73,7 @@
   - fix all XXX showstoppers
   - disable IR/IT DMA interrupts on shutdown
   - flush pci writes to the card by issuing a read
-  - devfs and character device dispatching (* needs testing with Linux 2.2.x)
+  - character device dispatching
   - switch over to the new kernel DMA API (pci_map_*()) (* needs testing on platforms with IOMMU!)
   - keep all video_cards in a list (for open() via chardev), set file->private_data = video
   - dv1394_poll should indicate POLLIN when receiving buffers are available
@@ -1096,7 +1096,6 @@ static int do_dv1394_init_default(struct video_card *video)
 
 	init.api_version = DV1394_API_VERSION;
 	init.n_frames = DV1394_MAX_FRAMES / 4;
-	/* the following are now set via devfs */
 	init.channel = video->channel;
 	init.format = video->pal_or_ntsc;
 	init.cip_n = video->cip_n;
@@ -1791,8 +1790,6 @@ static int dv1394_open(struct inode *inode, struct file *file)
 {
 	struct video_card *video = NULL;
 
-	/* if the device was opened through devfs, then file->private_data
-	   has already been set to video by devfs */
 	if (file->private_data) {
 		video = (struct video_card*) file->private_data;
 
@@ -2211,7 +2208,7 @@ static int dv1394_init(struct ti_ohci *ohci, enum pal_or_ntsc format, enum modes
 	video = kzalloc(sizeof(*video), GFP_KERNEL);
 	if (!video) {
 		printk(KERN_ERR "dv1394: cannot allocate video_card\n");
-		goto err;
+		return -1;
 	}
 
 	video->ohci = ohci;
@@ -2266,37 +2263,14 @@ static int dv1394_init(struct ti_ohci *ohci, enum pal_or_ntsc format, enum modes
 	list_add_tail(&video->list, &dv1394_cards);
 	spin_unlock_irqrestore(&dv1394_cards_lock, flags);
 
-	if (devfs_mk_cdev(MKDEV(IEEE1394_MAJOR,
-				IEEE1394_MINOR_BLOCK_DV1394*16 + video->id),
-			S_IFCHR|S_IRUGO|S_IWUGO,
-			 "ieee1394/dv/host%d/%s/%s",
-			 (video->id>>2),
-			 (video->pal_or_ntsc == DV1394_NTSC ? "NTSC" : "PAL"),
-			 (video->mode == MODE_RECEIVE ? "in" : "out")) < 0)
-			goto err_free;
-
 	debug_printk("dv1394: dv1394_init() OK on ID %d\n", video->id);
-
 	return 0;
-
- err_free:
-	kfree(video);
- err:
-	return -1;
 }
 
 static void dv1394_un_init(struct video_card *video)
 {
-	char buf[32];
-
 	/* obviously nobody has the driver open at this point */
 	do_dv1394_shutdown(video, 1);
-	snprintf(buf, sizeof(buf), "dv/host%d/%s/%s", (video->id >> 2),
-		(video->pal_or_ntsc == DV1394_NTSC ? "NTSC" : "PAL"),
-		(video->mode == MODE_RECEIVE ? "in" : "out")
-		);
-
-	devfs_remove("ieee1394/%s", buf);
 	kfree(video);
 }
 
@@ -2333,9 +2307,6 @@ static void dv1394_remove_host (struct hpsb_host *host)
 
 	class_device_destroy(hpsb_protocol_class,
 		MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2)));
-	devfs_remove("ieee1394/dv/host%d/NTSC", id);
-	devfs_remove("ieee1394/dv/host%d/PAL", id);
-	devfs_remove("ieee1394/dv/host%d", id);
 }
 
 static void dv1394_add_host (struct hpsb_host *host)
@@ -2352,9 +2323,6 @@ static void dv1394_add_host (struct hpsb_host *host)
 	class_device_create(hpsb_protocol_class, NULL, MKDEV(
 		IEEE1394_MAJOR,	IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2)), 
 		NULL, "dv1394-%d", id);
-	devfs_mk_dir("ieee1394/dv/host%d", id);
-	devfs_mk_dir("ieee1394/dv/host%d/NTSC", id);
-	devfs_mk_dir("ieee1394/dv/host%d/PAL", id);
 
 	dv1394_init(ohci, DV1394_NTSC, MODE_RECEIVE);
 	dv1394_init(ohci, DV1394_NTSC, MODE_TRANSMIT);
@@ -2611,10 +2579,8 @@ MODULE_LICENSE("GPL");
 static void __exit dv1394_exit_module(void)
 {
 	hpsb_unregister_protocol(&dv1394_driver);
-
 	hpsb_unregister_highlevel(&dv1394_highlevel);
 	cdev_del(&dv1394_cdev);
-	devfs_remove("ieee1394/dv");
 }
 
 static int __init dv1394_init_module(void)
@@ -2630,15 +2596,12 @@ static int __init dv1394_init_module(void)
 		return ret;
 	}
 
-	devfs_mk_dir("ieee1394/dv");
-
 	hpsb_register_highlevel(&dv1394_highlevel);
 
 	ret = hpsb_register_protocol(&dv1394_driver);
 	if (ret) {
 		printk(KERN_ERR "dv1394: failed to register protocol\n");
 		hpsb_unregister_highlevel(&dv1394_highlevel);
-		devfs_remove("ieee1394/dv");
 		cdev_del(&dv1394_cdev);
 		return ret;
 	}

drivers/ieee1394/ieee1394_core.c

@@ -58,7 +58,7 @@ MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality.");
 
 /* Disable Isochronous Resource Manager functionality */
 int hpsb_disable_irm = 0;
-module_param_named(disable_irm, hpsb_disable_irm, bool, 0);
+module_param_named(disable_irm, hpsb_disable_irm, bool, 0444);
 MODULE_PARM_DESC(disable_irm,
 		 "Disable Isochronous Resource Manager functionality.");
 
@@ -1078,17 +1078,10 @@ static int __init ieee1394_init(void)
 		goto exit_release_kernel_thread;
 	}
 
-	/* actually this is a non-fatal error */
-	ret = devfs_mk_dir("ieee1394");
-	if (ret < 0) {
-		HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
-		goto release_chrdev;
-	}
-
 	ret = bus_register(&ieee1394_bus_type);
 	if (ret < 0) {
 		HPSB_INFO("bus register failed");
-		goto release_devfs;
+		goto release_chrdev;
 	}
 
 	for (i = 0; fw_bus_attrs[i]; i++) {
@@ -1099,7 +1092,7 @@ static int __init ieee1394_init(void)
 						fw_bus_attrs[i--]);
 			}
 			bus_unregister(&ieee1394_bus_type);
-			goto release_devfs;
+			goto release_chrdev;
 		}
 	}
 
@@ -1152,8 +1145,6 @@ static int __init ieee1394_init(void)
 	for (i = 0; fw_bus_attrs[i]; i++)
 		bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
 	bus_unregister(&ieee1394_bus_type);
-release_devfs:
-	devfs_remove("ieee1394");
 release_chrdev:
 	unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
 exit_release_kernel_thread:
@@ -1191,7 +1182,6 @@ static void __exit ieee1394_cleanup(void)
 	hpsb_cleanup_config_roms();
 
 	unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
-	devfs_remove("ieee1394");
 }
 
 module_init(ieee1394_init);

drivers/ieee1394/ieee1394_core.h

@@ -3,7 +3,6 @@
 #define _IEEE1394_CORE_H
 
 #include <linux/slab.h>
-#include <linux/devfs_fs_kernel.h>
 #include <asm/atomic.h>
 #include <asm/semaphore.h>
 #include "hosts.h"
@@ -202,14 +201,12 @@ void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 #define IEEE1394_MINOR_BLOCK_RAW1394	   0
 #define IEEE1394_MINOR_BLOCK_VIDEO1394	   1
 #define IEEE1394_MINOR_BLOCK_DV1394	   2
-#define IEEE1394_MINOR_BLOCK_AMDTP	   3
 #define IEEE1394_MINOR_BLOCK_EXPERIMENTAL 15
 
 #define IEEE1394_CORE_DEV	  MKDEV(IEEE1394_MAJOR, 0)
 #define IEEE1394_RAW1394_DEV	  MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16)
 #define IEEE1394_VIDEO1394_DEV	  MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_VIDEO1394 * 16)
 #define IEEE1394_DV1394_DEV	  MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_DV1394 * 16)
-#define IEEE1394_AMDTP_DEV	  MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_AMDTP * 16)
 #define IEEE1394_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16)
 
 /* return the index (within a minor number block) of a file */

drivers/ieee1394/ohci1394.c

@@ -544,12 +544,19 @@ static void ohci_initialize(struct ti_ohci *ohci)
 	/* Initialize IR Legacy DMA channel mask */
 	ohci->ir_legacy_channels = 0;
 
-	/*
-	 * Accept AT requests from all nodes. This probably
-	 * will have to be controlled from the subsystem
-	 * on a per node basis.
-	 */
-	reg_write(ohci,OHCI1394_AsReqFilterHiSet, 0x80000000);
+	/* Accept AR requests from all nodes */
+	reg_write(ohci, OHCI1394_AsReqFilterHiSet, 0x80000000);
+
+	/* Set the address range of the physical response unit.
+	 * Most controllers do not implement it as a writable register though.
+	 * They will keep a hardwired offset of 0x00010000 and show 0x0 as
+	 * register content.
+	 * To actually enable physical responses is the job of our interrupt
+	 * handler which programs the physical request filter. */
+	reg_write(ohci, OHCI1394_PhyUpperBound, 0xffff0000);
+
+	DBGMSG("physUpperBoundOffset=%08x",
+	       reg_read(ohci, OHCI1394_PhyUpperBound));
 
 	/* Specify AT retries */
 	reg_write(ohci, OHCI1394_ATRetries,
@@ -572,6 +579,7 @@ static void ohci_initialize(struct ti_ohci *ohci)
 		  OHCI1394_reqTxComplete |
 		  OHCI1394_isochRx |
 		  OHCI1394_isochTx |
+		  OHCI1394_postedWriteErr |
 		  OHCI1394_cycleInconsistent);
 
 	/* Enable link */
@@ -2374,15 +2382,17 @@ static irqreturn_t ohci_irq_handler(int irq, void *dev_id,
 
 		event &= ~OHCI1394_unrecoverableError;
 	}
-
+	if (event & OHCI1394_postedWriteErr) {
+		PRINT(KERN_ERR, "physical posted write error");
+		/* no recovery strategy yet, had to involve protocol drivers */
+	}
 	if (event & OHCI1394_cycleInconsistent) {
 		/* We subscribe to the cycleInconsistent event only to
 		 * clear the corresponding event bit... otherwise,
 		 * isochronous cycleMatch DMA won't work. */
 		DBGMSG("OHCI1394_cycleInconsistent");
 		event &= ~OHCI1394_cycleInconsistent;
 	}
-
 	if (event & OHCI1394_busReset) {
 		/* The busReset event bit can't be cleared during the
 		 * selfID phase, so we disable busReset interrupts, to
@@ -2426,7 +2436,6 @@ static irqreturn_t ohci_irq_handler(int irq, void *dev_id,
 		}
 		event &= ~OHCI1394_busReset;
 	}
-
 	if (event & OHCI1394_reqTxComplete) {
 		struct dma_trm_ctx *d = &ohci->at_req_context;
 		DBGMSG("Got reqTxComplete interrupt "
@@ -2514,26 +2523,20 @@ static irqreturn_t ohci_irq_handler(int irq, void *dev_id,
 			reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset);
 			spin_unlock_irqrestore(&ohci->event_lock, flags);
 
-			/* Accept Physical requests from all nodes. */
-			reg_write(ohci,OHCI1394_AsReqFilterHiSet, 0xffffffff);
-			reg_write(ohci,OHCI1394_AsReqFilterLoSet, 0xffffffff);
-
 			/* Turn on phys dma reception.
 			 *
 			 * TODO: Enable some sort of filtering management.
 			 */
 			if (phys_dma) {
-				reg_write(ohci,OHCI1394_PhyReqFilterHiSet, 0xffffffff);
-				reg_write(ohci,OHCI1394_PhyReqFilterLoSet, 0xffffffff);
-				reg_write(ohci,OHCI1394_PhyUpperBound, 0xffff0000);
-			} else {
-				reg_write(ohci,OHCI1394_PhyReqFilterHiSet, 0x00000000);
-				reg_write(ohci,OHCI1394_PhyReqFilterLoSet, 0x00000000);
+				reg_write(ohci, OHCI1394_PhyReqFilterHiSet,
+					  0xffffffff);
+				reg_write(ohci, OHCI1394_PhyReqFilterLoSet,
+					  0xffffffff);
 			}
 
 			DBGMSG("PhyReqFilter=%08x%08x",
-			       reg_read(ohci,OHCI1394_PhyReqFilterHiSet),
-			       reg_read(ohci,OHCI1394_PhyReqFilterLoSet));
+			       reg_read(ohci, OHCI1394_PhyReqFilterHiSet),
+			       reg_read(ohci, OHCI1394_PhyReqFilterLoSet));
 
 			hpsb_selfid_complete(host, phyid, isroot);
 		} else
@@ -3259,8 +3262,8 @@ static int __devinit ohci1394_pci_probe(struct pci_dev *dev,
 	 * fail to report the right length.  Anyway, the ohci spec
 	 * clearly says it's 2kb, so this shouldn't be a problem. */
 	ohci_base = pci_resource_start(dev, 0);
-	if (pci_resource_len(dev, 0) != OHCI1394_REGISTER_SIZE)
-		PRINT(KERN_WARNING, "Unexpected PCI resource length of %lx!",
+	if (pci_resource_len(dev, 0) < OHCI1394_REGISTER_SIZE)
+		PRINT(KERN_WARNING, "PCI resource length of %lx too small!",
 		      pci_resource_len(dev, 0));
 
 	/* Seems PCMCIA handles this internally. Not sure why. Seems

drivers/ieee1394/raw1394.c

@@ -41,7 +41,6 @@
 #include <linux/cdev.h>
 #include <asm/uaccess.h>
 #include <asm/atomic.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/compat.h>
 
 #include "csr1212.h"
@@ -2999,9 +2998,6 @@ static int __init init_raw1394(void)
 		goto out_unreg;
 	}
 
-	devfs_mk_cdev(MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16),
-		      S_IFCHR | S_IRUSR | S_IWUSR, RAW1394_DEVICE_NAME);
-
 	cdev_init(&raw1394_cdev, &raw1394_fops);
 	raw1394_cdev.owner = THIS_MODULE;
 	kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME);
@@ -3023,7 +3019,6 @@ static int __init init_raw1394(void)
 	goto out;
 
       out_dev:
-	devfs_remove(RAW1394_DEVICE_NAME);
 	class_device_destroy(hpsb_protocol_class,
 			     MKDEV(IEEE1394_MAJOR,
 				   IEEE1394_MINOR_BLOCK_RAW1394 * 16));
@@ -3039,7 +3034,6 @@ static void __exit cleanup_raw1394(void)
 			     MKDEV(IEEE1394_MAJOR,
 				   IEEE1394_MINOR_BLOCK_RAW1394 * 16));
 	cdev_del(&raw1394_cdev);
-	devfs_remove(RAW1394_DEVICE_NAME);
 	hpsb_unregister_highlevel(&raw1394_highlevel);
 	hpsb_unregister_protocol(&raw1394_driver);
 }