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SubjectRE: [PATCH v3 9/9] NTB: Add ntb.h comments
Date
From: Serge Semin
> Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
> ---
> include/linux/ntb.h | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/include/linux/ntb.h b/include/linux/ntb.h
> index 6d46179..dab0a1b 100644
> --- a/include/linux/ntb.h
> +++ b/include/linux/ntb.h
> @@ -326,12 +326,17 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops
> *ops)
> {
> /* commented callbacks are not required: */
> return
> + /* Port operations are required */

... for multiport devices.

> !ops->peer_port_count == !ops->port_number &&
> !ops->peer_port_number == !ops->port_number &&
> !ops->peer_port_idx == !ops->port_number &&
> +
> + /* Link operations are requiered */
> ops->link_is_up &&
> ops->link_enable &&
> ops->link_disable &&
> +
> + /* One or both MW interfaces should be developed */
> ops->mw_count &&
> ops->mw_get_align &&
> (ops->mw_set_trans ||
> @@ -341,12 +346,11 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops
> *ops)
> ops->peer_mw_get_addr &&
> /* ops->peer_mw_clear_trans && */
>
> + /* Doorbell operations are mostly required */
> /* ops->db_is_unsafe && */
> ops->db_valid_mask &&
> -
> /* both set, or both unset */
> - (!ops->db_vector_count == !ops->db_vector_mask) &&
> -
> + (!ops->db_vector_count == !ops->db_vector_mask) &&
> ops->db_read &&
> /* ops->db_set && */
> ops->db_clear &&
> @@ -360,6 +364,8 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops)
> /* ops->peer_db_read_mask && */
> /* ops->peer_db_set_mask && */
> /* ops->peer_db_clear_mask && */
> +
> + /* Scrachpads interface is optional */
> /* !ops->spad_is_unsafe == !ops->spad_count && */
> !ops->spad_read == !ops->spad_count &&
> !ops->spad_write == !ops->spad_count &&
> @@ -367,6 +373,7 @@ static inline int ntb_dev_ops_is_valid(const struct ntb_dev_ops *ops)
> /* !ops->peer_spad_read == !ops->spad_count && */
> !ops->peer_spad_write == !ops->spad_count &&
>
> + /* Messaging interface is optional */
> !ops->msg_inbits == !ops->msg_count &&
> !ops->msg_outbits == !ops->msg_count &&
> !ops->msg_read_sts == !ops->msg_count &&
> @@ -387,13 +394,12 @@ struct ntb_client {
> struct device_driver drv;
> const struct ntb_client_ops ops;
> };
> -
> #define drv_ntb_client(__drv) container_of((__drv), struct ntb_client, drv)
>
> /**
> * struct ntb_device - ntb device
> * @dev: Linux device object.
> - * @pdev: Pci device entry of the ntb.
> + * @pdev: PCI device entry of the ntb.
> * @topo: Detected topology of the ntb.
> * @ops: See &ntb_dev_ops.
> * @ctx: See &ntb_ctx_ops.
> @@ -414,7 +420,6 @@ struct ntb_dev {
> /* block unregister until device is fully released */
> struct completion released;
> };
> -
> #define dev_ntb(__dev) container_of((__dev), struct ntb_dev, dev)
>
> /**
> @@ -511,7 +516,7 @@ void ntb_link_event(struct ntb_dev *ntb);
> * multiple interrupt vectors for doorbells, the vector number indicates which
> * vector received the interrupt. The vector number is relative to the first
> * vector used for doorbells, starting at zero, and must be less than
> - ** ntb_db_vector_count(). The driver may call ntb_db_read() to check which
> + * ntb_db_vector_count(). The driver may call ntb_db_read() to check which
> * doorbell bits need service, and ntb_db_vector_mask() to determine which of
> * those bits are associated with the vector number.
> */
> --
> 2.6.6


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