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Commit fd9adc40 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi 

Pull SCSI fixes from James Bottomley:
 "Two driver fixes (ibmvfc, iscsi_tcp) and a USB fix for devices that
  give the wrong return to Read Capacity and cause a huge log spew.

  The remaining five patches all try to fix commit 84676c1f
  ("genirq/affinity: assign vectors to all possible CPUs") which broke
  the non-mq I/O path"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled
  scsi: sd: Remember that READ CAPACITY(16) succeeded
  scsi: ibmvfc: Avoid unnecessary port relogin
  scsi: virtio_scsi: unify scsi_host_template
  scsi: virtio_scsi: fix IO hang caused by automatic irq vector affinity
  scsi: core: introduce force_blk_mq
  scsi: megaraid_sas: fix selection of reply queue
  scsi: hpsa: fix selection of reply queue
parents 3eb2ce82 89d0c804

drivers/scsi/hosts.c

+1 −0
Original line number Diff line number Diff line
@@ -474,6 +474,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) 
		shost->dma_boundary = 0xffffffff;



	shost->use_blk_mq = scsi_use_blk_mq;

	shost->use_blk_mq = scsi_use_blk_mq || shost->hostt->force_blk_mq;



	device_initialize(&shost->shost_gendev);

	dev_set_name(&shost->shost_gendev, "host%d", shost->host_no);

drivers/scsi/hpsa.c

+54 −19
Original line number Diff line number Diff line
@@ -1045,11 +1045,7 @@ static void set_performant_mode(struct ctlr_info *h, struct CommandList *c, 
		c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);

		if (unlikely(!h->msix_vectors))

			return;

		if (likely(reply_queue == DEFAULT_REPLY_QUEUE))

			c->Header.ReplyQueue =

				raw_smp_processor_id() % h->nreply_queues;

		else

			c->Header.ReplyQueue = reply_queue % h->nreply_queues;

		c->Header.ReplyQueue = reply_queue;

	}

}
@@ -1063,10 +1059,7 @@ static void set_ioaccel1_performant_mode(struct ctlr_info *h, 
	 * Tell the controller to post the reply to the queue for this

	 * processor.  This seems to give the best I/O throughput.

	 */

	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))

		cp->ReplyQueue = smp_processor_id() % h->nreply_queues;

	else

		cp->ReplyQueue = reply_queue % h->nreply_queues;

	cp->ReplyQueue = reply_queue;

	/*

	 * Set the bits in the address sent down to include:

	 *  - performant mode bit (bit 0)
@@ -1087,10 +1080,7 @@ static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, 
	/* Tell the controller to post the reply to the queue for this

	 * processor.  This seems to give the best I/O throughput.

	 */

	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))

		cp->reply_queue = smp_processor_id() % h->nreply_queues;

	else

		cp->reply_queue = reply_queue % h->nreply_queues;

	cp->reply_queue = reply_queue;

	/* Set the bits in the address sent down to include:

	 *  - performant mode bit not used in ioaccel mode 2

	 *  - pull count (bits 0-3)
@@ -1109,10 +1099,7 @@ static void set_ioaccel2_performant_mode(struct ctlr_info *h, 
	 * Tell the controller to post the reply to the queue for this

	 * processor.  This seems to give the best I/O throughput.

	 */

	if (likely(reply_queue == DEFAULT_REPLY_QUEUE))

		cp->reply_queue = smp_processor_id() % h->nreply_queues;

	else

		cp->reply_queue = reply_queue % h->nreply_queues;

	cp->reply_queue = reply_queue;

	/*

	 * Set the bits in the address sent down to include:

	 *  - performant mode bit not used in ioaccel mode 2
@@ -1157,6 +1144,8 @@ static void __enqueue_cmd_and_start_io(struct ctlr_info *h, 
{

	dial_down_lockup_detection_during_fw_flash(h, c);

	atomic_inc(&h->commands_outstanding);



	reply_queue = h->reply_map[raw_smp_processor_id()];

	switch (c->cmd_type) {

	case CMD_IOACCEL1:

		set_ioaccel1_performant_mode(h, c, reply_queue);
@@ -7376,6 +7365,26 @@ static void hpsa_disable_interrupt_mode(struct ctlr_info *h) 
	h->msix_vectors = 0;

}



static void hpsa_setup_reply_map(struct ctlr_info *h)

{

	const struct cpumask *mask;

	unsigned int queue, cpu;



	for (queue = 0; queue < h->msix_vectors; queue++) {

		mask = pci_irq_get_affinity(h->pdev, queue);

		if (!mask)

			goto fallback;



		for_each_cpu(cpu, mask)

			h->reply_map[cpu] = queue;

	}

	return;



fallback:

	for_each_possible_cpu(cpu)

		h->reply_map[cpu] = 0;

}



/* If MSI/MSI-X is supported by the kernel we will try to enable it on

 * controllers that are capable. If not, we use legacy INTx mode.

 */
@@ -7771,6 +7780,10 @@ static int hpsa_pci_init(struct ctlr_info *h) 
	err = hpsa_interrupt_mode(h);

	if (err)

		goto clean1;



	/* setup mapping between CPU and reply queue */

	hpsa_setup_reply_map(h);



	err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);

	if (err)

		goto clean2;	/* intmode+region, pci */
@@ -8480,6 +8493,28 @@ static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h, 
	return wq;

}



static void hpda_free_ctlr_info(struct ctlr_info *h)

{

	kfree(h->reply_map);

	kfree(h);

}



static struct ctlr_info *hpda_alloc_ctlr_info(void)

{

	struct ctlr_info *h;



	h = kzalloc(sizeof(*h), GFP_KERNEL);

	if (!h)

		return NULL;



	h->reply_map = kzalloc(sizeof(*h->reply_map) * nr_cpu_ids, GFP_KERNEL);

	if (!h->reply_map) {

		kfree(h);

		return NULL;

	}

	return h;

}



static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)

{

	int dac, rc;
@@ -8517,7 +8552,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	 * the driver.  See comments in hpsa.h for more info.

	 */

	BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);

	h = kzalloc(sizeof(*h), GFP_KERNEL);

	h = hpda_alloc_ctlr_info();

	if (!h) {

		dev_err(&pdev->dev, "Failed to allocate controller head\n");

		return -ENOMEM;
@@ -8916,7 +8951,7 @@ static void hpsa_remove_one(struct pci_dev *pdev) 
	h->lockup_detected = NULL;			/* init_one 2 */

	/* (void) pci_disable_pcie_error_reporting(pdev); */	/* init_one 1 */



	kfree(h);					/* init_one 1 */

	hpda_free_ctlr_info(h);				/* init_one 1 */

}



static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,

drivers/scsi/hpsa.h

+1 −0
Original line number Diff line number Diff line
@@ -158,6 +158,7 @@ struct bmic_controller_parameters { 
#pragma pack()



struct ctlr_info {

	unsigned int *reply_map;

	int	ctlr;

	char	devname[8];

	char    *product_name;

drivers/scsi/ibmvscsi/ibmvfc.c

+2 −4
Original line number Diff line number Diff line
@@ -3579,11 +3579,9 @@ static void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 
static int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad,

				    struct ibmvfc_target *tgt)

{

	if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name,

		   sizeof(tgt->ids.port_name)))

	if (wwn_to_u64((u8 *)&mad->fc_iu.response[2]) != tgt->ids.port_name)

		return 1;

	if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name,

		   sizeof(tgt->ids.node_name)))

	if (wwn_to_u64((u8 *)&mad->fc_iu.response[4]) != tgt->ids.node_name)

		return 1;

	if (be32_to_cpu(mad->fc_iu.response[6]) != tgt->scsi_id)

		return 1;

drivers/scsi/iscsi_tcp.c

+8 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/kfifo.h>

#include <linux/scatterlist.h>

#include <linux/module.h>

#include <linux/backing-dev.h>

#include <net/tcp.h>

#include <scsi/scsi_cmnd.h>

#include <scsi/scsi_device.h>
@@ -954,6 +955,13 @@ static int iscsi_sw_tcp_slave_alloc(struct scsi_device *sdev) 


static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)

{

	struct iscsi_sw_tcp_host *tcp_sw_host = iscsi_host_priv(sdev->host);

	struct iscsi_session *session = tcp_sw_host->session;

	struct iscsi_conn *conn = session->leadconn;



	if (conn->datadgst_en)

		sdev->request_queue->backing_dev_info->capabilities

			|= BDI_CAP_STABLE_WRITES;

	blk_queue_bounce_limit(sdev->request_queue, BLK_BOUNCE_ANY);

	blk_queue_dma_alignment(sdev->request_queue, 0);

	return 0;