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| author | Wu Hao <hao.wu@intel.com> | 2018-06-30 03:53:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-15 14:55:44 +0300 |
| commit | ecb5fbe299dfaad778033259f35bc696fa1fb743 (patch) | |
| tree | 6a3db26d67f707197718d8b772f19fbca8fe8e5c /drivers | |
| parent | 571d78bd458a831cf51dff2afa1dda3309bd82b2 (diff) | |
| download | linux-ecb5fbe299dfaad778033259f35bc696fa1fb743.tar.xz | |
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/<fpga>/status
Return status of fpga manager, including reconfiguration errors.
Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-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 'drivers')
| -rw-r--r-- | drivers/fpga/fpga-mgr.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index c1564cf827fe..a41b07e37884 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -406,12 +406,40 @@ static ssize_t state_show(struct device *dev, return sprintf(buf, "%s\n", state_str[mgr->state]); } +static ssize_t status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fpga_manager *mgr = to_fpga_manager(dev); + u64 status; + int len = 0; + + if (!mgr->mops->status) + return -ENOENT; + + status = mgr->mops->status(mgr); + + if (status & FPGA_MGR_STATUS_OPERATION_ERR) + len += sprintf(buf + len, "reconfig operation error\n"); + if (status & FPGA_MGR_STATUS_CRC_ERR) + len += sprintf(buf + len, "reconfig CRC error\n"); + if (status & FPGA_MGR_STATUS_INCOMPATIBLE_IMAGE_ERR) + len += sprintf(buf + len, "reconfig incompatible image\n"); + if (status & FPGA_MGR_STATUS_IP_PROTOCOL_ERR) + len += sprintf(buf + len, "reconfig IP protocol error\n"); + if (status & FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR) + len += sprintf(buf + len, "reconfig fifo overflow error\n"); + + return len; +} + static DEVICE_ATTR_RO(name); static DEVICE_ATTR_RO(state); +static DEVICE_ATTR_RO(status); static struct attribute *fpga_mgr_attrs[] = { &dev_attr_name.attr, &dev_attr_state.attr, + &dev_attr_status.attr, NULL, }; ATTRIBUTE_GROUPS(fpga_mgr); |