NVMe: Add download / activate firmware ioctls

Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

drivers/block/nvme.c

@@ -829,6 +829,47 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
 	return status;
 }
 
+static int nvme_download_firmware(struct nvme_ns *ns,
+						struct nvme_dlfw __user *udlfw)
+{
+	struct nvme_dev *dev = ns->dev;
+	struct nvme_dlfw dlfw;
+	struct nvme_command c;
+	int nents, status;
+	struct scatterlist *sg;
+
+	if (copy_from_user(&dlfw, udlfw, sizeof(dlfw)))
+		return -EFAULT;
+	if (dlfw.length >= (1 << 30))
+		return -EINVAL;
+
+	nents = nvme_map_user_pages(dev, 1, dlfw.addr, dlfw.length * 4, &sg);
+	if (nents < 0)
+		return nents;
+
+	memset(&c, 0, sizeof(c));
+	c.dlfw.opcode = nvme_admin_download_fw;
+	c.dlfw.numd = cpu_to_le32(dlfw.length);
+	c.dlfw.offset = cpu_to_le32(dlfw.offset);
+	nvme_setup_prps(&c.common, sg, dlfw.length * 4);
+
+	status = nvme_submit_admin_cmd(dev, &c, NULL);
+	nvme_unmap_user_pages(dev, 0, dlfw.addr, dlfw.length * 4, sg, nents);
+	return status;
+}
+
+static int nvme_activate_firmware(struct nvme_ns *ns, unsigned long arg)
+{
+	struct nvme_dev *dev = ns->dev;
+	struct nvme_command c;
+
+	memset(&c, 0, sizeof(c));
+	c.common.opcode = nvme_admin_activate_fw;
+	c.common.rsvd10[0] = cpu_to_le32(arg);
+
+	return nvme_submit_admin_cmd(dev, &c, NULL);
+}
+
 static int nvme_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
 							unsigned long arg)
 {
@@ -843,6 +884,10 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
 		return nvme_get_range_type(ns, arg);
 	case NVME_IOCTL_SUBMIT_IO:
 		return nvme_submit_io(ns, (void __user *)arg);
+	case NVME_IOCTL_DOWNLOAD_FW:
+		return nvme_download_firmware(ns, (void __user *)arg);
+	case NVME_IOCTL_ACTIVATE_FW:
+		return nvme_activate_firmware(ns, arg);
 	default:
 		return -ENOTTY;
 	}

include/linux/nvme.h

@@ -262,7 +262,7 @@ struct nvme_create_cq {
 	__u8			opcode;
 	__u8			flags;
 	__u16			command_id;
-	__le32			rsvd1[5];
+	__u32			rsvd1[5];
 	__le64			prp1;
 	__u64			rsvd8;
 	__le16			cqid;
@@ -276,14 +276,14 @@ struct nvme_create_sq {
 	__u8			opcode;
 	__u8			flags;
 	__u16			command_id;
-	__le32			rsvd1[5];
+	__u32			rsvd1[5];
 	__le64			prp1;
 	__u64			rsvd8;
 	__le16			sqid;
 	__le16			qsize;
 	__le16			sq_flags;
 	__le16			cqid;
-	__le32			rsvd12[4];
+	__u32			rsvd12[4];
 };
 
 struct nvme_delete_queue {
@@ -292,8 +292,20 @@ struct nvme_delete_queue {
 	__u16			command_id;
 	__u32			rsvd1[9];
 	__le16			qid;
-	__le16			rsvd10;
-	__le32			rsvd11[5];
+	__u16			rsvd10;
+	__u32			rsvd11[5];
+};
+
+struct nvme_download_firmware {
+	__u8			opcode;
+	__u8			flags;
+	__u16			command_id;
+	__u32			rsvd1[5];
+	__le64			prp1;
+	__le64			prp2;
+	__le32			numd;
+	__le32			offset;
+	__u32			rsvd12[4];
 };
 
 struct nvme_command {
@@ -305,6 +317,7 @@ struct nvme_command {
 		struct nvme_create_cq create_cq;
 		struct nvme_create_sq create_sq;
 		struct nvme_delete_queue delete_queue;
+		struct nvme_download_firmware dlfw;
 	};
 };
 
@@ -348,7 +361,7 @@ enum {
 
 struct nvme_completion {
 	__le32	result;		/* Used by admin commands to return data */
-	__le32	rsvd;
+	__u32	rsvd;
 	__le16	sq_head;	/* how much of this queue may be reclaimed */
 	__le16	sq_id;		/* submission queue that generated this entry */
 	__u16	command_id;	/* of the command which completed */
@@ -372,9 +385,17 @@ struct nvme_user_io {
 	__u32	result;
 };
 
+struct nvme_dlfw {
+	__u64	addr;
+	__u32	length;	/* In dwords */
+	__u32	offset;	/* In dwords */
+};
+
 #define NVME_IOCTL_IDENTIFY_NS	_IOW('N', 0x40, struct nvme_id_ns)
 #define NVME_IOCTL_IDENTIFY_CTRL _IOW('N', 0x41, struct nvme_id_ctrl)
 #define NVME_IOCTL_GET_RANGE_TYPE _IOW('N', 0x42, struct nvme_lba_range_type)
 #define NVME_IOCTL_SUBMIT_IO	_IOWR('N', 0x43, struct nvme_rw_command)
+#define NVME_IOCTL_DOWNLOAD_FW	_IOR('N', 0x44, struct nvme_dlfw)
+#define NVME_IOCTL_ACTIVATE_FW	_IO('N', 0x45)
 
 #endif /* _LINUX_NVME_H */