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fpga: mgr: add compat_id support

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This patch introduces compat_id support to fpga manager, it adds
a fpga_compat_id pointer to fpga manager data structure to allow
fpga manager drivers to save the compatibility id. This compat_id
could be used for compatibility checking before doing partial
reconfiguration to associated fpga regions.

Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wu Hao 2018-06-30 08:53:11 +08:00 committed by Greg Kroah-Hartman
parent ecb5fbe299
commit 99a560bde3
1 changed files with 13 additions and 0 deletions
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13
include/linux/fpga/fpga-mgr.h
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@ -135,12 +135,24 @@ struct fpga_manager_ops {
#define FPGA_MGR_STATUS_IP_PROTOCOL_ERR BIT(3)
#define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR BIT(4)
/**
* struct fpga_compat_id - id for compatibility check
*
* @id_h: high 64bit of the compat_id
* @id_l: low 64bit of the compat_id
*/
struct fpga_compat_id {
u64 id_h;
u64 id_l;
};
/**
* struct fpga_manager - fpga manager structure
* @name: name of low level fpga manager
* @dev: fpga manager device
* @ref_mutex: only allows one reference to fpga manager
* @state: state of fpga manager
* @compat_id: FPGA manager id for compatibility check.
* @mops: pointer to struct of fpga manager ops
* @priv: low level driver private date
*/
@ -149,6 +161,7 @@ struct fpga_manager {
struct device dev;
struct mutex ref_mutex;
enum fpga_mgr_states state;
struct fpga_compat_id *compat_id;
const struct fpga_manager_ops *mops;
void *priv;
};