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authorAlan Tull <atull@kernel.org>2017-11-15 23:20:12 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-28 18:30:37 +0300
commit5cf0c7f6502f26332b46fa87914553a4d6ae75ac (patch)
tree56814a3ec0bf179797e7d9fed89136954f937d3e /include/linux/fpga
parent9c1c4b2753fea36a072e78a5efc82fca0d13b455 (diff)
downloadlinux-5cf0c7f6502f26332b46fa87914553a4d6ae75ac.tar.xz
fpga: mgr: API change to replace fpga load functions with single function
fpga-mgr has three methods for programming FPGAs, depending on whether the image is in a scatter gather list, a contiguous buffer, or a firmware file. This makes it difficult to write upper layers as the caller has to assume whether the FPGA image is in a sg table, as a single buffer, or a firmware file. This commit moves these parameters to struct fpga_image_info and adds a single function for programming fpgas. New functions: * fpga_mgr_load - given fpga manager and struct fpga_image_info, program the fpga. * fpga_image_info_alloc - alloc a struct fpga_image_info. * fpga_image_info_free - free a struct fpga_image_info. These three functions are unexported: * fpga_mgr_buf_load_sg * fpga_mgr_buf_load * fpga_mgr_firmware_load Also use devm_kstrdup to copy firmware_name so we aren't making assumptions about where it comes from when allocing/freeing the struct fpga_image_info. API documentation has been updated and a new document for FPGA region has been added. Signed-off-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/fpga')
-rw-r--r--include/linux/fpga/fpga-mgr.h30
1 files changed, 19 insertions, 11 deletions
diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
index bfa14bc023fb..6b791348023b 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h
@@ -1,7 +1,8 @@
/*
* FPGA Framework
*
- * Copyright (C) 2013-2015 Altera Corporation
+ * Copyright (C) 2013-2016 Altera Corporation
+ * Copyright (C) 2017 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -15,12 +16,12 @@
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-
#ifndef _LINUX_FPGA_MGR_H
#define _LINUX_FPGA_MGR_H
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+
struct fpga_manager;
struct sg_table;
@@ -83,12 +84,22 @@ enum fpga_mgr_states {
* @disable_timeout_us: maximum time to disable traffic through bridge (uSec)
* @config_complete_timeout_us: maximum time for FPGA to switch to operating
* status in the write_complete op.
+ * @firmware_name: name of FPGA image firmware file
+ * @sgt: scatter/gather table containing FPGA image
+ * @buf: contiguous buffer containing FPGA image
+ * @count: size of buf
+ * @dev: device that owns this
*/
struct fpga_image_info {
u32 flags;
u32 enable_timeout_us;
u32 disable_timeout_us;
u32 config_complete_timeout_us;
+ char *firmware_name;
+ struct sg_table *sgt;
+ const char *buf;
+ size_t count;
+ struct device *dev;
};
/**
@@ -138,14 +149,11 @@ struct fpga_manager {
#define to_fpga_manager(d) container_of(d, struct fpga_manager, dev)
-int fpga_mgr_buf_load(struct fpga_manager *mgr, struct fpga_image_info *info,
- const char *buf, size_t count);
-int fpga_mgr_buf_load_sg(struct fpga_manager *mgr, struct fpga_image_info *info,
- struct sg_table *sgt);
+struct fpga_image_info *fpga_image_info_alloc(struct device *dev);
+
+void fpga_image_info_free(struct fpga_image_info *info);
-int fpga_mgr_firmware_load(struct fpga_manager *mgr,
- struct fpga_image_info *info,
- const char *image_name);
+int fpga_mgr_load(struct fpga_manager *mgr, struct fpga_image_info *info);
struct fpga_manager *of_fpga_mgr_get(struct device_node *node);