blob: 25c50b3b41206fd8017651008d9e93a0a0072a36 [file] [log] [blame]
From 86c687d1379955d95f762b643ae5b23648e4b5b3 Mon Sep 17 00:00:00 2001
From: Wu Hao <hao.wu@intel.com>
Date: Sat, 30 Jun 2018 08:53:11 +0800
Subject: [PATCH 1705/1795] 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 <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 99a560bde313892f87ca81db568a829d3d205882)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
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;
};
--
2.19.0