nvme: move struct nvme_iod to pci.c
This structure is specific to the PCIe driver internals and should be moved
to pci.c.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index b8a0222..0f24d3c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -130,6 +130,23 @@
};
/*
+ * 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 {
+ unsigned long 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 meta_sg[1]; /* metadata requires single contiguous buffer */
+ struct scatterlist sg[0];
+};
+
+/*
* Check we didin't inadvertently grow the command struct
*/
static inline void _nvme_check_size(void)