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raw/ioat: add device reset to configuration script

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Currently once a device is configured, the user does not have the ability
to reset the device via the script.

This patch adds a device reset option to the script. For example
"$dpdk_idxd_cfg.py 0 --reset" would reset device 0.

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This commit is contained in:
Kevin Laatz 2021-05-28 14:55:59 +01:00 committed by Thomas Monjalon
parent 1e5aade752
commit 1383fb672a
1 changed files with 12 additions and 1 deletions
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11
drivers/raw/ioat/dpdk_idxd_cfg.py
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@ -29,6 +29,12 @@ def write_values(self, values):
f.write(str(contents)) f.write(str(contents))
def reset_device(dsa_id):
"Reset the DSA device and all its queues"
drv_dir = SysfsDir("/sys/bus/dsa/drivers/dsa")
drv_dir.write_values({"unbind": f"dsa{dsa_id}"})
def get_pci_dir(pci): def get_pci_dir(pci):
"Search for the sysfs directory of the PCI device" "Search for the sysfs directory of the PCI device"
base_dir = '/sys/bus/pci/devices/' base_dir = '/sys/bus/pci/devices/'
@ -95,10 +101,15 @@ def main(args):
arg_p.add_argument('--name-prefix', metavar='prefix', dest='prefix', arg_p.add_argument('--name-prefix', metavar='prefix', dest='prefix',
default="dpdk", default="dpdk",
help="Prefix for workqueue name to mark for DPDK use [default: 'dpdk']") help="Prefix for workqueue name to mark for DPDK use [default: 'dpdk']")
arg_p.add_argument('--reset', action='store_true',
help="Reset DSA device and its queues")
parsed_args = arg_p.parse_args(args[1:]) parsed_args = arg_p.parse_args(args[1:])
dsa_id = parsed_args.dsa_id dsa_id = parsed_args.dsa_id
dsa_id = get_dsa_id(dsa_id) if ':' in dsa_id else dsa_id dsa_id = get_dsa_id(dsa_id) if ':' in dsa_id else dsa_id
if parsed_args.reset:
reset_device(dsa_id)
else:
configure_dsa(dsa_id, parsed_args.q, parsed_args.prefix) configure_dsa(dsa_id, parsed_args.q, parsed_args.prefix)