[PATCH v5 04/28] fpga: mgr: add compat_id support
From: Wu Hao <hidden>
Date: 2018-05-02 03:09:01
Also in:
linux-fpga, lkml
Subsystem:
fpga manager framework, the rest · Maintainers:
Moritz Fischer, Xu Yilun, Linus Torvalds
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 <redacted> --- 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 802eac8..f163f22 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h@@ -147,11 +147,23 @@ struct fpga_manager_ops { #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 */
@@ -160,6 +172,7 @@ 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; };
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1.8.3.1