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Commit 8d49a775 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-2.6.39/drivers' of git://git.kernel.dk/linux-2.6-block 

* 'for-2.6.39/drivers' of git://git.kernel.dk/linux-2.6-block: (122 commits)
  cciss: fix lost command issue
  drbd: need include for bitops functions declarations
  Revert "cciss: Add missing allocation in scsi_cmd_stack_setup and  corresponding deallocation"
  cciss: fix missed command status value CMD_UNABORTABLE
  cciss: remove unnecessary casts
  cciss: Mask off error bits of c->busaddr in cmd_special_free when calling pci_free_consistent
  cciss: Inform controller we are using 32-bit tags.
  cciss: hoist tag masking out of loop
  cciss: Add missing allocation in scsi_cmd_stack_setup and  corresponding deallocation
  cciss: export resettable host attribute
  drbd: drop code present under #ifdef which is relevant to 2.6.28 and below
  drbd: Fixed handling of read errors on a 'VerifyS' node
  drbd: Fixed handling of read errors on a 'VerifyT' node
  drbd: Implemented real timeout checking for request processing time
  drbd: Remove unused function atodb_endio()
  drbd: improve log message if received sector offset exceeds local capacity
  drbd: kill dead code
  drbd: don't BUG_ON, if bio_add_page of a single page to an empty bio fails
  drbd: Removed left over, now wrong comments
  drbd: serialize admin requests for new verify run with pending bitmap io
  ...
parents 93567c43 1ddd5049

Documentation/ABI/testing/sysfs-bus-pci-devices-cciss

+12 −0
Original line number Diff line number Diff line
@@ -59,3 +59,15 @@ Kernel Version: 2.6.31 
Contact:	iss_storagedev@hp.com

Description:	Displays the usage count (number of opens) of logical drive Y

		of controller X.



Where:		/sys/bus/pci/devices/<dev>/ccissX/resettable

Date:		February 2011

Kernel Version:	2.6.38

Contact:	iss_storagedev@hp.com

Description:	Value of 1 indicates the controller can honor the reset_devices

		kernel parameter.  Value of 0 indicates reset_devices cannot be

		honored.  This is to allow, for example, kexec tools to be able

		to warn the user if they designate an unresettable device as

		a dump device, as kdump requires resetting the device in order

		to work reliably.

drivers/block/cciss.c

+69 −17
Original line number Diff line number Diff line
@@ -193,7 +193,7 @@ static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, 
	u64 *cfg_offset);

static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev,

	unsigned long *memory_bar);



static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag);



/* performant mode helper functions */

static void  calc_bucket_map(int *bucket, int num_buckets, int nsgs,
@@ -231,7 +231,7 @@ static const struct block_device_operations cciss_fops = { 
 */

static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c)

{

	if (likely(h->transMethod == CFGTBL_Trans_Performant))

	if (likely(h->transMethod & CFGTBL_Trans_Performant))

		c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);

}
@@ -556,6 +556,44 @@ static void __devinit cciss_procinit(ctlr_info_t *h) 
#define to_hba(n) container_of(n, struct ctlr_info, dev)

#define to_drv(n) container_of(n, drive_info_struct, dev)



/* List of controllers which cannot be reset on kexec with reset_devices */

static u32 unresettable_controller[] = {

	0x324a103C, /* Smart Array P712m */

	0x324b103C, /* SmartArray P711m */

	0x3223103C, /* Smart Array P800 */

	0x3234103C, /* Smart Array P400 */

	0x3235103C, /* Smart Array P400i */

	0x3211103C, /* Smart Array E200i */

	0x3212103C, /* Smart Array E200 */

	0x3213103C, /* Smart Array E200i */

	0x3214103C, /* Smart Array E200i */

	0x3215103C, /* Smart Array E200i */

	0x3237103C, /* Smart Array E500 */

	0x323D103C, /* Smart Array P700m */

	0x409C0E11, /* Smart Array 6400 */

	0x409D0E11, /* Smart Array 6400 EM */

};



static int ctlr_is_resettable(struct ctlr_info *h)

{

	int i;



	for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++)

		if (unresettable_controller[i] == h->board_id)

			return 0;

	return 1;

}



static ssize_t host_show_resettable(struct device *dev,

				    struct device_attribute *attr,

				    char *buf)

{

	struct ctlr_info *h = to_hba(dev);



	return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h));

}

static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL);



static ssize_t host_store_rescan(struct device *dev,

				 struct device_attribute *attr,

				 const char *buf, size_t count)
@@ -741,6 +779,7 @@ static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); 


static struct attribute *cciss_host_attrs[] = {

	&dev_attr_rescan.attr,

	&dev_attr_resettable.attr,

	NULL

};
@@ -973,8 +1012,8 @@ static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) 
	temp64.val32.upper = c->ErrDesc.Addr.upper;

	pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),

			    c->err_info, (dma_addr_t) temp64.val);

	pci_free_consistent(h->pdev, sizeof(CommandList_struct),

			    c, (dma_addr_t) c->busaddr);

	pci_free_consistent(h->pdev, sizeof(CommandList_struct), c,

		(dma_addr_t) cciss_tag_discard_error_bits(h, (u32) c->busaddr));

}



static inline ctlr_info_t *get_host(struct gendisk *disk)
@@ -1490,8 +1529,7 @@ static int cciss_bigpassthru(ctlr_info_t *h, void __user *argp) 
		return -EINVAL;

	if (!capable(CAP_SYS_RAWIO))

		return -EPERM;

	ioc = (BIG_IOCTL_Command_struct *)

	    kmalloc(sizeof(*ioc), GFP_KERNEL);

	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);

	if (!ioc) {

		status = -ENOMEM;

		goto cleanup1;
@@ -2653,6 +2691,10 @@ static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) 
			c->Request.CDB[0]);

		return_status = IO_NEEDS_RETRY;

		break;

	case CMD_UNABORTABLE:

		dev_warn(&h->pdev->dev, "cmd unabortable\n");

		return_status = IO_ERROR;

		break;

	default:

		dev_warn(&h->pdev->dev, "cmd 0x%02x returned "

		       "unknown status %x\n", c->Request.CDB[0],
@@ -3103,6 +3145,13 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, 
			(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?

				DID_PASSTHROUGH : DID_ERROR);

		break;

	case CMD_UNABORTABLE:

		dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd);

		rq->errors = make_status_bytes(SAM_STAT_GOOD,

			cmd->err_info->CommandStatus, DRIVER_OK,

			cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ?

				DID_PASSTHROUGH : DID_ERROR);

		break;

	default:

		dev_warn(&h->pdev->dev, "cmd %p returned "

		       "unknown status %x\n", cmd,
@@ -3136,10 +3185,13 @@ static inline u32 cciss_tag_to_index(u32 tag) 
	return tag >> DIRECT_LOOKUP_SHIFT;

}



static inline u32 cciss_tag_discard_error_bits(u32 tag)

static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag)

{

#define CCISS_ERROR_BITS 0x03

	return tag & ~CCISS_ERROR_BITS;

#define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)

#define CCISS_SIMPLE_ERROR_BITS 0x03

	if (likely(h->transMethod & CFGTBL_Trans_Performant))

		return tag & ~CCISS_PERF_ERROR_BITS;

	return tag & ~CCISS_SIMPLE_ERROR_BITS;

}



static inline void cciss_mark_tag_indexed(u32 *tag)
@@ -3359,7 +3411,7 @@ static inline u32 next_command(ctlr_info_t *h) 
{

	u32 a;



	if (unlikely(h->transMethod != CFGTBL_Trans_Performant))

	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))

		return h->access.command_completed(h);



	if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
@@ -3394,14 +3446,12 @@ static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) 
/* process completion of a non-indexed command */

static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag)

{

	u32 tag;

	CommandList_struct *c = NULL;

	__u32 busaddr_masked, tag_masked;



	tag = cciss_tag_discard_error_bits(raw_tag);

	tag_masked = cciss_tag_discard_error_bits(h, raw_tag);

	list_for_each_entry(c, &h->cmpQ, list) {

		busaddr_masked = cciss_tag_discard_error_bits(c->busaddr);

		tag_masked = cciss_tag_discard_error_bits(tag);

		busaddr_masked = cciss_tag_discard_error_bits(h, c->busaddr);

		if (busaddr_masked == tag_masked) {

			finish_cmd(h, c, raw_tag);

			return next_command(h);
@@ -3753,7 +3803,8 @@ static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) 
	}

}



static __devinit void cciss_enter_performant_mode(ctlr_info_t *h)

static __devinit void cciss_enter_performant_mode(ctlr_info_t *h,

	u32 use_short_tags)

{

	/* This is a bit complicated.  There are 8 registers on

	 * the controller which we write to to tell it 8 different
@@ -3808,7 +3859,7 @@ static __devinit void cciss_enter_performant_mode(ctlr_info_t *h) 
	writel(0, &h->transtable->RepQCtrAddrHigh32);

	writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32);

	writel(0, &h->transtable->RepQAddr0High32);

	writel(CFGTBL_Trans_Performant,

	writel(CFGTBL_Trans_Performant | use_short_tags,

			&(h->cfgtable->HostWrite.TransportRequest));



	writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
@@ -3855,7 +3906,8 @@ static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) 
	if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL))

		goto clean_up;



	cciss_enter_performant_mode(h);

	cciss_enter_performant_mode(h,

		trans_support & CFGTBL_Trans_use_short_tags);



	/* Change the access methods to the performant access methods */

	h->access = SA5_performant_access;

drivers/block/cciss.h

+1 −0
Original line number Diff line number Diff line
@@ -222,6 +222,7 @@ static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c) 
			h->ctlr, c->busaddr);

#endif /* CCISS_DEBUG */

         writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);

	readl(h->vaddr + SA5_REQUEST_PORT_OFFSET);

	 h->commands_outstanding++;

	 if ( h->commands_outstanding > h->max_outstanding)

		h->max_outstanding = h->commands_outstanding;

drivers/block/cciss_cmd.h

+1 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ 


#define CFGTBL_Trans_Simple     0x00000002l

#define CFGTBL_Trans_Performant 0x00000004l

#define CFGTBL_Trans_use_short_tags 0x20000000l



#define CFGTBL_BusType_Ultra2   0x00000001l

#define CFGTBL_BusType_Ultra3   0x00000002l

drivers/block/cciss_scsi.c

+11 −2
Original line number Diff line number Diff line
@@ -824,13 +824,18 @@ static void complete_scsi_command(CommandList_struct *c, int timeout, 
			break;

			case CMD_UNSOLICITED_ABORT:

				cmd->result = DID_ABORT << 16;

				dev_warn(&h->pdev->dev, "%p aborted do to an "

				dev_warn(&h->pdev->dev, "%p aborted due to an "

					"unsolicited abort\n", c);

			break;

			case CMD_TIMEOUT:

				cmd->result = DID_TIME_OUT << 16;

				dev_warn(&h->pdev->dev, "%p timedout\n", c);

			break;

			case CMD_UNABORTABLE:

				cmd->result = DID_ERROR << 16;

				dev_warn(&h->pdev->dev, "c %p command "

					"unabortable\n", c);

			break;

			default:

				cmd->result = DID_ERROR << 16;

				dev_warn(&h->pdev->dev,
@@ -1007,11 +1012,15 @@ cciss_scsi_interpret_error(ctlr_info_t *h, CommandList_struct *c) 
		break;

		case CMD_UNSOLICITED_ABORT:

			dev_warn(&h->pdev->dev,

				"%p aborted do to an unsolicited abort\n", c);

				"%p aborted due to an unsolicited abort\n", c);

		break;

		case CMD_TIMEOUT:

			dev_warn(&h->pdev->dev, "%p timedout\n", c);

		break;

		case CMD_UNABORTABLE:

			dev_warn(&h->pdev->dev,

				"%p unabortable\n", c);

		break;

		default:

			dev_warn(&h->pdev->dev,

				"%p returned unknown status %x\n",