From ecb5fbe299dfaad778033259f35bc696fa1fb743 Mon Sep 17 00:00:00 2001 From: Wu Hao Date: Sat, 30 Jun 2018 08:53:10 +0800 Subject: fpga: mgr: add status for fpga-manager This patch adds status sysfs interface for fpga manager, it's a read only interface which allows user to get fpga manager status, including full/partial reconfiguration error and other status information. It adds a status callback to fpga_manager_ops too, allows each fpga_manager driver to define its own method to collect latest status from hardware. The following sysfs file is created: * /sys/class/fpga_manager//status Return status of fpga manager, including reconfiguration errors. Signed-off-by: Wu Hao Acked-by: Alan Tull Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman --- include/linux/fpga/fpga-mgr.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux/fpga/fpga-mgr.h') diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index 3eb6b9d60d65..e249b7250345 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -101,6 +101,7 @@ struct fpga_image_info { * struct fpga_manager_ops - ops for low level fpga manager drivers * @initial_header_size: Maximum number of bytes that should be passed into write_init * @state: returns an enum value of the FPGA's state + * @status: returns status of the FPGA, including reconfiguration error code * @write_init: prepare the FPGA to receive confuration data * @write: write count bytes of configuration data to the FPGA * @write_sg: write the scatter list of configuration data to the FPGA @@ -115,6 +116,7 @@ struct fpga_image_info { struct fpga_manager_ops { size_t initial_header_size; enum fpga_mgr_states (*state)(struct fpga_manager *mgr); + u64 (*status)(struct fpga_manager *mgr); int (*write_init)(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t count); @@ -126,6 +128,13 @@ struct fpga_manager_ops { const struct attribute_group **groups; }; +/* FPGA manager status: Partial/Full Reconfiguration errors */ +#define FPGA_MGR_STATUS_OPERATION_ERR BIT(0) +#define FPGA_MGR_STATUS_CRC_ERR BIT(1) +#define FPGA_MGR_STATUS_INCOMPATIBLE_IMAGE_ERR BIT(2) +#define FPGA_MGR_STATUS_IP_PROTOCOL_ERR BIT(3) +#define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR BIT(4) + /** * struct fpga_manager - fpga manager structure * @name: name of low level fpga manager -- cgit v1.2.3