NVMe: Move structures & definitions to header file
nvme-scsi.c uses several data structures and definitions that were
previously private to nvme-core.c. Move the definitions to nvme.h,
protected by __KERNEL__.
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 26e2660..1f98040 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -46,7 +46,6 @@
#define SQ_SIZE(depth) (depth * sizeof(struct nvme_command))
#define CQ_SIZE(depth) (depth * sizeof(struct nvme_completion))
#define NVME_MINORS 64
-#define NVME_IO_TIMEOUT (5 * HZ)
#define ADMIN_TIMEOUT (60 * HZ)
static int nvme_major;
@@ -60,44 +59,6 @@
static struct task_struct *nvme_thread;
/*
- * Represents an NVM Express device. Each nvme_dev is a PCI function.
- */
-struct nvme_dev {
- struct list_head node;
- struct nvme_queue **queues;
- 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;
- int db_stride;
- u32 ctrl_config;
- struct msix_entry *entry;
- struct nvme_bar __iomem *bar;
- struct list_head namespaces;
- char serial[20];
- char model[40];
- char firmware_rev[8];
- u32 max_hw_sectors;
- u16 oncs;
-};
-
-/*
- * An NVM Express namespace is equivalent to a SCSI LUN
- */
-struct nvme_ns {
- struct list_head list;
-
- struct nvme_dev *dev;
- struct request_queue *queue;
- struct gendisk *disk;
-
- int ns_id;
- int lba_shift;
-};
-
-/*
* An NVM Express queue. Each device has at least two (one for admin
* commands and one for I/O commands).
*/
@@ -295,22 +256,6 @@
return 0;
}
-/*
- * The nvme_iod describes the data in an I/O, including the list of PRP
- * entries. You can't see it in this data structure because C doesn't let
- * me express that. Use nvme_alloc_iod to ensure there's enough space
- * allocated to store the PRP list.
- */
-struct nvme_iod {
- void *private; /* For the use of the submitter of the I/O */
- int npages; /* In the PRP list. 0 means small pool in use */
- int offset; /* Of PRP list */
- int nents; /* Used in scatterlist */
- int length; /* Of data, in bytes */
- dma_addr_t first_dma;
- struct scatterlist sg[0];
-};
-
static __le64 **iod_list(struct nvme_iod *iod)
{
return ((void *)iod) + iod->offset;
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index bde44c1..6f899ad 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -493,4 +493,64 @@
#define NVME_IOCTL_ADMIN_CMD _IOWR('N', 0x41, struct nvme_admin_cmd)
#define NVME_IOCTL_SUBMIT_IO _IOW('N', 0x42, struct nvme_user_io)
+#ifdef __KERNEL__
+#include <linux/pci.h>
+
+#define NVME_IO_TIMEOUT (5 * HZ)
+
+/*
+ * Represents an NVM Express device. Each nvme_dev is a PCI function.
+ */
+struct nvme_dev {
+ struct list_head node;
+ struct nvme_queue **queues;
+ 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;
+ int db_stride;
+ u32 ctrl_config;
+ struct msix_entry *entry;
+ struct nvme_bar __iomem *bar;
+ struct list_head namespaces;
+ char serial[20];
+ char model[40];
+ char firmware_rev[8];
+ u32 max_hw_sectors;
+ u16 oncs;
+};
+
+/*
+ * An NVM Express namespace is equivalent to a SCSI LUN
+ */
+struct nvme_ns {
+ struct list_head list;
+
+ struct nvme_dev *dev;
+ struct request_queue *queue;
+ struct gendisk *disk;
+
+ int ns_id;
+ int lba_shift;
+};
+
+/*
+ * The nvme_iod describes the data in an I/O, including the list of PRP
+ * entries. You can't see it in this data structure because C doesn't let
+ * me express that. Use nvme_alloc_iod to ensure there's enough space
+ * allocated to store the PRP list.
+ */
+struct nvme_iod {
+ void *private; /* For the use of the submitter of the I/O */
+ int npages; /* In the PRP list. 0 means small pool in use */
+ int offset; /* Of PRP list */
+ int nents; /* Used in scatterlist */
+ int length; /* Of data, in bytes */
+ dma_addr_t first_dma;
+ struct scatterlist sg[0];
+};
+#endif
+
#endif /* _LINUX_NVME_H */