From 99a560bde313892f87ca81db568a829d3d205882 Mon Sep 17 00:00:00 2001 From: Wu Hao Date: Sat, 30 Jun 2018 08:53:11 +0800 Subject: [PATCH] fpga: mgr: add compat_id support 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 Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman --- include/linux/fpga/fpga-mgr.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index e249b7250345..8942e61f0028 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -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; };