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Commit 81b1dab4 authored by Jens Axboe's avatar Jens Axboe
Browse files

Merge branch 'nvme-4.18' of git://git.infradead.org/nvme into for-4.18/block 

Pull NVMe changes from Keith:

"This is just the first nvme pull request for 4.18. There are several
fabrics and target patches that I missed, so there will be more to
come."

* 'nvme-4.18' of git://git.infradead.org/nvme:
  nvme-pci: drop IRQ disabling on submission queue lock
  nvme-pci: split the nvme queue lock into submission and completion locks
  nvme-pci: handle completions outside of the queue lock
  nvme-pci: move ->cq_vector == -1 check outside of ->q_lock
  nvme-pci: remove cq check after submission
  nvme-pci: simplify nvme_cqe_valid
  nvme: mark the result argument to nvme_complete_async_event volatile
  nvme/pci: Sync controller reset for AER slot_reset
  nvme/pci: Hold controller reference during async probe
  nvme: only reconfigure discard if necessary
  nvme/pci: Use async_schedule for initial reset work
  nvme: lightnvm: add granby support
  NVMe: Add Quirk Delay before CHK RDY for Seagate Nytro Flash Storage
  nvme: change order of qid and cmdid in completion trace
  nvme: fc: provide a descriptive error
parents d416c92c 1eae349d

drivers/nvme/host/core.c

+17 −13
Original line number Diff line number Diff line
@@ -1348,13 +1348,19 @@ static void nvme_set_chunk_size(struct nvme_ns *ns) 
	blk_queue_chunk_sectors(ns->queue, rounddown_pow_of_two(chunk_size));

}



static void nvme_config_discard(struct nvme_ctrl *ctrl,

		unsigned stream_alignment, struct request_queue *queue)

static void nvme_config_discard(struct nvme_ns *ns)

{

	struct nvme_ctrl *ctrl = ns->ctrl;

	struct request_queue *queue = ns->queue;

	u32 size = queue_logical_block_size(queue);



	if (stream_alignment)

		size *= stream_alignment;

	if (!(ctrl->oncs & NVME_CTRL_ONCS_DSM)) {

		blk_queue_flag_clear(QUEUE_FLAG_DISCARD, queue);

		return;

	}



	if (ctrl->nr_streams && ns->sws && ns->sgs)

		size *= ns->sws * ns->sgs;



	BUILD_BUG_ON(PAGE_SIZE / sizeof(struct nvme_dsm_range) <

			NVME_DSM_MAX_RANGES);
@@ -1362,9 +1368,12 @@ static void nvme_config_discard(struct nvme_ctrl *ctrl, 
	queue->limits.discard_alignment = 0;

	queue->limits.discard_granularity = size;



	/* If discard is already enabled, don't reset queue limits */

	if (blk_queue_flag_test_and_set(QUEUE_FLAG_DISCARD, queue))

		return;



	blk_queue_max_discard_sectors(queue, UINT_MAX);

	blk_queue_max_discard_segments(queue, NVME_DSM_MAX_RANGES);

	blk_queue_flag_set(QUEUE_FLAG_DISCARD, queue);



	if (ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES)

		blk_queue_max_write_zeroes_sectors(queue, UINT_MAX);
@@ -1408,10 +1417,6 @@ static void nvme_update_disk_info(struct gendisk *disk, 
{

	sector_t capacity = le64_to_cpup(&id->nsze) << (ns->lba_shift - 9);

	unsigned short bs = 1 << ns->lba_shift;

	unsigned stream_alignment = 0;



	if (ns->ctrl->nr_streams && ns->sws && ns->sgs)

		stream_alignment = ns->sws * ns->sgs;



	blk_mq_freeze_queue(disk->queue);

	blk_integrity_unregister(disk);
@@ -1425,10 +1430,9 @@ static void nvme_update_disk_info(struct gendisk *disk, 
		nvme_init_integrity(disk, ns->ms, ns->pi_type);

	if (ns->ms && !nvme_ns_has_pi(ns) && !blk_get_integrity(disk))

		capacity = 0;

	set_capacity(disk, capacity);



	if (ns->ctrl->oncs & NVME_CTRL_ONCS_DSM)

		nvme_config_discard(ns->ctrl, stream_alignment, disk->queue);

	set_capacity(disk, capacity);

	nvme_config_discard(ns);

	blk_mq_unfreeze_queue(disk->queue);

}
@@ -3317,7 +3321,7 @@ static void nvme_fw_act_work(struct work_struct *work) 
}



void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,

		union nvme_result *res)

		volatile union nvme_result *res)

{

	u32 result = le32_to_cpu(res->u32);

drivers/nvme/host/fc.c

+2 −0
Original line number Diff line number Diff line
@@ -3284,6 +3284,8 @@ nvme_fc_create_ctrl(struct device *dev, struct nvmf_ctrl_options *opts) 
	}

	spin_unlock_irqrestore(&nvme_fc_lock, flags);



	pr_warn("%s: %s - %s combination not found\n",

		__func__, opts->traddr, opts->host_traddr);

	return ERR_PTR(-ENOENT);

}

drivers/nvme/host/nvme.h

+1 −1
Original line number Diff line number Diff line
@@ -400,7 +400,7 @@ int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len, 
		bool send);



void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,

		union nvme_result *res);

		volatile union nvme_result *res);



void nvme_stop_queues(struct nvme_ctrl *ctrl);

void nvme_start_queues(struct nvme_ctrl *ctrl);

drivers/nvme/host/pci.c

+111 −78
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
 */



#include <linux/aer.h>

#include <linux/async.h>

#include <linux/blkdev.h>

#include <linux/blk-mq.h>

#include <linux/blk-mq-pci.h>
@@ -68,7 +69,6 @@ MODULE_PARM_DESC(io_queue_depth, "set io queue depth, should >= 2"); 
struct nvme_dev;

struct nvme_queue;



static void nvme_process_cq(struct nvme_queue *nvmeq);

static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown);



/*
@@ -147,9 +147,10 @@ static inline struct nvme_dev *to_nvme_dev(struct nvme_ctrl *ctrl) 
struct nvme_queue {

	struct device *q_dmadev;

	struct nvme_dev *dev;

	spinlock_t q_lock;

	spinlock_t sq_lock;

	struct nvme_command *sq_cmds;

	struct nvme_command __iomem *sq_cmds_io;

	spinlock_t cq_lock ____cacheline_aligned_in_smp;

	volatile struct nvme_completion *cqes;

	struct blk_mq_tags **tags;

	dma_addr_t sq_dma_addr;
@@ -161,7 +162,6 @@ struct nvme_queue { 
	u16 cq_head;

	u16 qid;

	u8 cq_phase;

	u8 cqe_seen;

	u32 *dbbuf_sq_db;

	u32 *dbbuf_cq_db;

	u32 *dbbuf_sq_ei;
@@ -872,6 +872,13 @@ static blk_status_t nvme_queue_rq(struct blk_mq_hw_ctx *hctx, 
	struct nvme_command cmnd;

	blk_status_t ret;



	/*

	 * We should not need to do this, but we're still using this to

	 * ensure we can drain requests on a dying queue.

	 */

	if (unlikely(nvmeq->cq_vector < 0))

		return BLK_STS_IOERR;



	ret = nvme_setup_cmd(ns, req, &cmnd);

	if (ret)

		return ret;
@@ -888,15 +895,9 @@ static blk_status_t nvme_queue_rq(struct blk_mq_hw_ctx *hctx, 


	blk_mq_start_request(req);



	spin_lock_irq(&nvmeq->q_lock);

	if (unlikely(nvmeq->cq_vector < 0)) {

		ret = BLK_STS_IOERR;

		spin_unlock_irq(&nvmeq->q_lock);

		goto out_cleanup_iod;

	}

	spin_lock(&nvmeq->sq_lock);

	__nvme_submit_cmd(nvmeq, &cmnd);

	nvme_process_cq(nvmeq);

	spin_unlock_irq(&nvmeq->q_lock);

	spin_unlock(&nvmeq->sq_lock);

	return BLK_STS_OK;

out_cleanup_iod:

	nvme_free_iod(dev, req);
@@ -914,10 +915,10 @@ static void nvme_pci_complete_rq(struct request *req) 
}



/* We read the CQE phase first to check if the rest of the entry is valid */

static inline bool nvme_cqe_valid(struct nvme_queue *nvmeq, u16 head,

		u16 phase)

static inline bool nvme_cqe_pending(struct nvme_queue *nvmeq)

{

	return (le16_to_cpu(nvmeq->cqes[head].status) & 1) == phase;

	return (le16_to_cpu(nvmeq->cqes[nvmeq->cq_head].status) & 1) ==

			nvmeq->cq_phase;

}



static inline void nvme_ring_cq_doorbell(struct nvme_queue *nvmeq)
@@ -931,9 +932,9 @@ static inline void nvme_ring_cq_doorbell(struct nvme_queue *nvmeq) 
	}

}



static inline void nvme_handle_cqe(struct nvme_queue *nvmeq,

		struct nvme_completion *cqe)

static inline void nvme_handle_cqe(struct nvme_queue *nvmeq, u16 idx)

{

	volatile struct nvme_completion *cqe = &nvmeq->cqes[idx];

	struct request *req;



	if (unlikely(cqe->command_id >= nvmeq->q_depth)) {
@@ -956,83 +957,81 @@ static inline void nvme_handle_cqe(struct nvme_queue *nvmeq, 
		return;

	}



	nvmeq->cqe_seen = 1;

	req = blk_mq_tag_to_rq(*nvmeq->tags, cqe->command_id);

	nvme_end_request(req, cqe->status, cqe->result);

}



static inline bool nvme_read_cqe(struct nvme_queue *nvmeq,

		struct nvme_completion *cqe)

static void nvme_complete_cqes(struct nvme_queue *nvmeq, u16 start, u16 end)

{

	if (nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase)) {

		*cqe = nvmeq->cqes[nvmeq->cq_head];

	while (start != end) {

		nvme_handle_cqe(nvmeq, start);

		if (++start == nvmeq->q_depth)

			start = 0;

	}

}



static inline void nvme_update_cq_head(struct nvme_queue *nvmeq)

{

	if (++nvmeq->cq_head == nvmeq->q_depth) {

		nvmeq->cq_head = 0;

		nvmeq->cq_phase = !nvmeq->cq_phase;

	}

		return true;

	}

	return false;

}



static void nvme_process_cq(struct nvme_queue *nvmeq)

static inline bool nvme_process_cq(struct nvme_queue *nvmeq, u16 *start,

		u16 *end, int tag)

{

	struct nvme_completion cqe;

	int consumed = 0;

	bool found = false;



	while (nvme_read_cqe(nvmeq, &cqe)) {

		nvme_handle_cqe(nvmeq, &cqe);

		consumed++;

	*start = nvmeq->cq_head;

	while (!found && nvme_cqe_pending(nvmeq)) {

		if (nvmeq->cqes[nvmeq->cq_head].command_id == tag)

			found = true;

		nvme_update_cq_head(nvmeq);

	}

	*end = nvmeq->cq_head;



	if (consumed)

	if (*start != *end)

		nvme_ring_cq_doorbell(nvmeq);

	return found;

}



static irqreturn_t nvme_irq(int irq, void *data)

{

	irqreturn_t result;

	struct nvme_queue *nvmeq = data;

	spin_lock(&nvmeq->q_lock);

	nvme_process_cq(nvmeq);

	result = nvmeq->cqe_seen ? IRQ_HANDLED : IRQ_NONE;

	nvmeq->cqe_seen = 0;

	spin_unlock(&nvmeq->q_lock);

	return result;

	u16 start, end;



	spin_lock(&nvmeq->cq_lock);

	nvme_process_cq(nvmeq, &start, &end, -1);

	spin_unlock(&nvmeq->cq_lock);



	if (start == end)

		return IRQ_NONE;

	nvme_complete_cqes(nvmeq, start, end);

	return IRQ_HANDLED;

}



static irqreturn_t nvme_irq_check(int irq, void *data)

{

	struct nvme_queue *nvmeq = data;

	if (nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase))

	if (nvme_cqe_pending(nvmeq))

		return IRQ_WAKE_THREAD;

	return IRQ_NONE;

}



static int __nvme_poll(struct nvme_queue *nvmeq, unsigned int tag)

{

	struct nvme_completion cqe;

	int found = 0, consumed = 0;

	u16 start, end;

	bool found;



	if (!nvme_cqe_valid(nvmeq, nvmeq->cq_head, nvmeq->cq_phase))

	if (!nvme_cqe_pending(nvmeq))

		return 0;



	spin_lock_irq(&nvmeq->q_lock);

	while (nvme_read_cqe(nvmeq, &cqe)) {

		nvme_handle_cqe(nvmeq, &cqe);

		consumed++;



		if (tag == cqe.command_id) {

			found = 1;

			break;

		}

       }



	if (consumed)

		nvme_ring_cq_doorbell(nvmeq);

	spin_unlock_irq(&nvmeq->q_lock);

	spin_lock_irq(&nvmeq->cq_lock);

	found = nvme_process_cq(nvmeq, &start, &end, tag);

	spin_unlock_irq(&nvmeq->cq_lock);



	nvme_complete_cqes(nvmeq, start, end);

	return found;

}
@@ -1053,9 +1052,9 @@ static void nvme_pci_submit_async_event(struct nvme_ctrl *ctrl) 
	c.common.opcode = nvme_admin_async_event;

	c.common.command_id = NVME_AQ_BLK_MQ_DEPTH;



	spin_lock_irq(&nvmeq->q_lock);

	spin_lock(&nvmeq->sq_lock);

	__nvme_submit_cmd(nvmeq, &c);

	spin_unlock_irq(&nvmeq->q_lock);

	spin_unlock(&nvmeq->sq_lock);

}



static int adapter_delete_queue(struct nvme_dev *dev, u8 opcode, u16 id)
@@ -1312,15 +1311,21 @@ static int nvme_suspend_queue(struct nvme_queue *nvmeq) 
{

	int vector;



	spin_lock_irq(&nvmeq->q_lock);

	spin_lock_irq(&nvmeq->cq_lock);

	if (nvmeq->cq_vector == -1) {

		spin_unlock_irq(&nvmeq->q_lock);

		spin_unlock_irq(&nvmeq->cq_lock);

		return 1;

	}

	vector = nvmeq->cq_vector;

	nvmeq->dev->online_queues--;

	nvmeq->cq_vector = -1;

	spin_unlock_irq(&nvmeq->q_lock);

	spin_unlock_irq(&nvmeq->cq_lock);



	/*

	 * Ensure that nvme_queue_rq() sees it ->cq_vector == -1 without

	 * having to grab the lock.

	 */

	mb();



	if (!nvmeq->qid && nvmeq->dev->ctrl.admin_q)

		blk_mq_quiesce_queue(nvmeq->dev->ctrl.admin_q);
@@ -1333,15 +1338,18 @@ static int nvme_suspend_queue(struct nvme_queue *nvmeq) 
static void nvme_disable_admin_queue(struct nvme_dev *dev, bool shutdown)

{

	struct nvme_queue *nvmeq = &dev->queues[0];

	u16 start, end;



	if (shutdown)

		nvme_shutdown_ctrl(&dev->ctrl);

	else

		nvme_disable_ctrl(&dev->ctrl, dev->ctrl.cap);



	spin_lock_irq(&nvmeq->q_lock);

	nvme_process_cq(nvmeq);

	spin_unlock_irq(&nvmeq->q_lock);

	spin_lock_irq(&nvmeq->cq_lock);

	nvme_process_cq(nvmeq, &start, &end, -1);

	spin_unlock_irq(&nvmeq->cq_lock);



	nvme_complete_cqes(nvmeq, start, end);

}



static int nvme_cmb_qdepth(struct nvme_dev *dev, int nr_io_queues,
@@ -1399,7 +1407,8 @@ static int nvme_alloc_queue(struct nvme_dev *dev, int qid, int depth) 


	nvmeq->q_dmadev = dev->dev;

	nvmeq->dev = dev;

	spin_lock_init(&nvmeq->q_lock);

	spin_lock_init(&nvmeq->sq_lock);

	spin_lock_init(&nvmeq->cq_lock);

	nvmeq->cq_head = 0;

	nvmeq->cq_phase = 1;

	nvmeq->q_db = &dev->dbs[qid * 2 * dev->db_stride];
@@ -1435,7 +1444,7 @@ static void nvme_init_queue(struct nvme_queue *nvmeq, u16 qid) 
{

	struct nvme_dev *dev = nvmeq->dev;



	spin_lock_irq(&nvmeq->q_lock);

	spin_lock_irq(&nvmeq->cq_lock);

	nvmeq->sq_tail = 0;

	nvmeq->cq_head = 0;

	nvmeq->cq_phase = 1;
@@ -1443,7 +1452,7 @@ static void nvme_init_queue(struct nvme_queue *nvmeq, u16 qid) 
	memset((void *)nvmeq->cqes, 0, CQ_SIZE(nvmeq->q_depth));

	nvme_dbbuf_init(dev, nvmeq, qid);

	dev->online_queues++;

	spin_unlock_irq(&nvmeq->q_lock);

	spin_unlock_irq(&nvmeq->cq_lock);

}



static int nvme_create_queue(struct nvme_queue *nvmeq, int qid)
@@ -1988,19 +1997,22 @@ static void nvme_del_queue_end(struct request *req, blk_status_t error) 
static void nvme_del_cq_end(struct request *req, blk_status_t error)

{

	struct nvme_queue *nvmeq = req->end_io_data;

	u16 start, end;



	if (!error) {

		unsigned long flags;



		/*

		 * We might be called with the AQ q_lock held

		 * and the I/O queue q_lock should always

		 * We might be called with the AQ cq_lock held

		 * and the I/O queue cq_lock should always

		 * nest inside the AQ one.

		 */

		spin_lock_irqsave_nested(&nvmeq->q_lock, flags,

		spin_lock_irqsave_nested(&nvmeq->cq_lock, flags,

					SINGLE_DEPTH_NESTING);

		nvme_process_cq(nvmeq);

		spin_unlock_irqrestore(&nvmeq->q_lock, flags);

		nvme_process_cq(nvmeq, &start, &end, -1);

		spin_unlock_irqrestore(&nvmeq->cq_lock, flags);



		nvme_complete_cqes(nvmeq, start, end);

	}



	nvme_del_queue_end(req, error);
@@ -2488,6 +2500,15 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) 
	return 0;

}



static void nvme_async_probe(void *data, async_cookie_t cookie)

{

	struct nvme_dev *dev = data;



	nvme_reset_ctrl_sync(&dev->ctrl);

	flush_work(&dev->ctrl.scan_work);

	nvme_put_ctrl(&dev->ctrl);

}



static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)

{

	int node, result = -ENOMEM;
@@ -2532,7 +2553,8 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) 


	dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev));



	nvme_reset_ctrl(&dev->ctrl);

	nvme_get_ctrl(&dev->ctrl);

	async_schedule(nvme_async_probe, dev);



	return 0;
@@ -2670,8 +2692,15 @@ static pci_ers_result_t nvme_slot_reset(struct pci_dev *pdev) 


	dev_info(dev->ctrl.device, "restart after slot reset\n");

	pci_restore_state(pdev);

	nvme_reset_ctrl(&dev->ctrl);

	nvme_reset_ctrl_sync(&dev->ctrl);



	switch (dev->ctrl.state) {

	case NVME_CTRL_LIVE:

	case NVME_CTRL_ADMIN_ONLY:

		return PCI_ERS_RESULT_RECOVERED;

	default:

		return PCI_ERS_RESULT_DISCONNECT;

	}

}



static void nvme_error_resume(struct pci_dev *pdev)
@@ -2704,6 +2733,8 @@ static const struct pci_device_id nvme_id_table[] = { 
		.driver_data = NVME_QUIRK_NO_DEEPEST_PS },

	{ PCI_VDEVICE(INTEL, 0x5845),	/* Qemu emulated controller */

		.driver_data = NVME_QUIRK_IDENTIFY_CNS, },

	{ PCI_DEVICE(0x1bb1, 0x0100),   /* Seagate Nytro Flash Storage */

		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },

	{ PCI_DEVICE(0x1c58, 0x0003),	/* HGST adapter */

		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },

	{ PCI_DEVICE(0x1c58, 0x0023),	/* WDC SN200 adapter */
@@ -2718,6 +2749,8 @@ static const struct pci_device_id nvme_id_table[] = { 
		.driver_data = NVME_QUIRK_LIGHTNVM, },

	{ PCI_DEVICE(0x1d1d, 0x2807),	/* CNEX WL */

		.driver_data = NVME_QUIRK_LIGHTNVM, },

	{ PCI_DEVICE(0x1d1d, 0x2601),	/* CNEX Granby */

		.driver_data = NVME_QUIRK_LIGHTNVM, },

	{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },

	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001) },

	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) },

drivers/nvme/host/trace.h

+2 −2
Original line number Diff line number Diff line
@@ -148,8 +148,8 @@ TRACE_EVENT(nvme_complete_rq, 
		    __entry->flags = nvme_req(req)->flags;

		    __entry->status = nvme_req(req)->status;

	    ),

	    TP_printk("cmdid=%u, qid=%d, res=%llu, retries=%u, flags=0x%x, status=%u",

		      __entry->cid, __entry->qid, __entry->result,

	    TP_printk("qid=%d, cmdid=%u, res=%llu, retries=%u, flags=0x%x, status=%u",

		      __entry->qid, __entry->cid, __entry->result,

		      __entry->retries, __entry->flags, __entry->status)



);