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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-11 16:45:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-11 16:45:59 -0700
commit3e8072d48b2dd0898e99698018b2045f8cd49965 (patch)
tree5710e46918d4e358f22fb6038ad81d1abdd3f1f8 /include
parenta63b747b41d6f6c9116fb2260381a3c96fe5dc02 (diff)
parentedd10d33283899fb15d99a290dcc9ceb3604ca78 (diff)
Merge git://git.infradead.org/users/willy/linux-nvme
Pull NVMe driver updates from Matthew Wilcox: "Various updates to the NVMe driver. The most user-visible change is that drive hotplugging now works and CPU hotplug while an NVMe drive is installed should also work better" * git://git.infradead.org/users/willy/linux-nvme: NVMe: Retry failed commands with non-fatal errors NVMe: Add getgeo to block ops NVMe: Start-stop nvme_thread during device add-remove. NVMe: Make I/O timeout a module parameter NVMe: CPU hot plug notification NVMe: per-cpu io queues NVMe: Replace DEFINE_PCI_DEVICE_TABLE NVMe: Fix divide-by-zero in nvme_trans_io_get_num_cmds NVMe: IOCTL path RCU protect queue access NVMe: RCU protected access to io queues NVMe: Initialize device reference count earlier NVMe: Add CONFIG_PM_SLEEP to suspend/resume functions
Diffstat (limited to 'include')
-rw-r--r--include/linux/nvme.h21
-rw-r--r--include/uapi/linux/nvme.h1
2 files changed, 13 insertions, 9 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 6b9aafed225f..a50173ca1d72 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -66,20 +66,25 @@ enum {
#define NVME_VS(major, minor) (major << 16 | minor)
-#define NVME_IO_TIMEOUT (5 * HZ)
+extern unsigned char io_timeout;
+#define NVME_IO_TIMEOUT (io_timeout * HZ)
/*
* Represents an NVM Express device. Each nvme_dev is a PCI function.
*/
struct nvme_dev {
struct list_head node;
- struct nvme_queue **queues;
+ struct nvme_queue __rcu **queues;
+ unsigned short __percpu *io_queue;
u32 __iomem *dbs;
struct pci_dev *pci_dev;
struct dma_pool *prp_page_pool;
struct dma_pool *prp_small_pool;
int instance;
- int queue_count;
+ unsigned queue_count;
+ unsigned online_queues;
+ unsigned max_qid;
+ int q_depth;
u32 db_stride;
u32 ctrl_config;
struct msix_entry *entry;
@@ -89,6 +94,7 @@ struct nvme_dev {
struct miscdevice miscdev;
work_func_t reset_workfn;
struct work_struct reset_work;
+ struct notifier_block nb;
char name[12];
char serial[20];
char model[40];
@@ -131,6 +137,7 @@ struct nvme_iod {
int length; /* Of data, in bytes */
unsigned long start_time;
dma_addr_t first_dma;
+ struct list_head node;
struct scatterlist sg[0];
};
@@ -146,16 +153,12 @@ static inline u64 nvme_block_nr(struct nvme_ns *ns, sector_t sector)
*/
void nvme_free_iod(struct nvme_dev *dev, struct nvme_iod *iod);
-int nvme_setup_prps(struct nvme_dev *dev, struct nvme_common_command *cmd,
- struct nvme_iod *iod, int total_len, gfp_t gfp);
+int nvme_setup_prps(struct nvme_dev *, struct nvme_iod *, int , gfp_t);
struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
unsigned long addr, unsigned length);
void nvme_unmap_user_pages(struct nvme_dev *dev, int write,
struct nvme_iod *iod);
-struct nvme_queue *get_nvmeq(struct nvme_dev *dev);
-void put_nvmeq(struct nvme_queue *nvmeq);
-int nvme_submit_sync_cmd(struct nvme_queue *nvmeq, struct nvme_command *cmd,
- u32 *result, unsigned timeout);
+int nvme_submit_io_cmd(struct nvme_dev *, struct nvme_command *, u32 *);
int nvme_submit_flush_data(struct nvme_queue *nvmeq, struct nvme_ns *ns);
int nvme_submit_admin_cmd(struct nvme_dev *, struct nvme_command *,
u32 *result);
diff --git a/include/uapi/linux/nvme.h b/include/uapi/linux/nvme.h
index e5ab62201119..096fe1c6f83d 100644
--- a/include/uapi/linux/nvme.h
+++ b/include/uapi/linux/nvme.h
@@ -434,6 +434,7 @@ enum {
NVME_SC_REFTAG_CHECK = 0x284,
NVME_SC_COMPARE_FAILED = 0x285,
NVME_SC_ACCESS_DENIED = 0x286,
+ NVME_SC_DNR = 0x4000,
};
struct nvme_completion {