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The control process (NSP) may take some time to complete its initialization. This is not a problem on most servers, but on very fast-booting machines it may not be ready for operation when driver probes the device. There is also a version of the flash in the wild where NSP tries to train the links as part of init. To wait for NSP initialization we should make sure its resource has already been added to the resource table. NSP adds itself there as last step of init. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* Copyright (C) 2015-2017 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* nfp.h
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* Interface for NFP device access and query functions.
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*/
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#ifndef __NFP_H__
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#define __NFP_H__
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#include <linux/device.h>
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#include <linux/types.h>
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#include "nfp_cpp.h"
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/* Implemented in nfp_hwinfo.c */
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struct nfp_hwinfo;
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struct nfp_hwinfo *nfp_hwinfo_read(struct nfp_cpp *cpp);
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const char *nfp_hwinfo_lookup(struct nfp_hwinfo *hwinfo, const char *lookup);
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/* Implemented in nfp_nsp.c, low level functions */
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struct nfp_nsp;
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struct nfp_cpp *nfp_nsp_cpp(struct nfp_nsp *state);
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bool nfp_nsp_config_modified(struct nfp_nsp *state);
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void nfp_nsp_config_set_modified(struct nfp_nsp *state, bool modified);
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void *nfp_nsp_config_entries(struct nfp_nsp *state);
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unsigned int nfp_nsp_config_idx(struct nfp_nsp *state);
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void nfp_nsp_config_set_state(struct nfp_nsp *state, void *entries,
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unsigned int idx);
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void nfp_nsp_config_clear_state(struct nfp_nsp *state);
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int nfp_nsp_read_eth_table(struct nfp_nsp *state, void *buf, unsigned int size);
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int nfp_nsp_write_eth_table(struct nfp_nsp *state,
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const void *buf, unsigned int size);
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int nfp_nsp_read_identify(struct nfp_nsp *state, void *buf, unsigned int size);
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int nfp_nsp_read_sensors(struct nfp_nsp *state, unsigned int sensor_mask,
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void *buf, unsigned int size);
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/* Implemented in nfp_resource.c */
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/* All keys are CRC32-POSIX of the 8-byte identification string */
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/* ARM/PCI vNIC Interfaces 0..3 */
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#define NFP_RESOURCE_VNIC_PCI_0 "vnic.p0"
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#define NFP_RESOURCE_VNIC_PCI_1 "vnic.p1"
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#define NFP_RESOURCE_VNIC_PCI_2 "vnic.p2"
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#define NFP_RESOURCE_VNIC_PCI_3 "vnic.p3"
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/* NFP Hardware Info Database */
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#define NFP_RESOURCE_NFP_HWINFO "nfp.info"
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/* Service Processor */
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#define NFP_RESOURCE_NSP "nfp.sp"
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#define NFP_RESOURCE_NSP_DIAG "arm.diag"
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/* Netronone Flow Firmware Table */
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#define NFP_RESOURCE_NFP_NFFW "nfp.nffw"
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/* MAC Statistics Accumulator */
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#define NFP_RESOURCE_MAC_STATISTICS "mac.stat"
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struct nfp_resource *
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nfp_resource_acquire(struct nfp_cpp *cpp, const char *name);
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void nfp_resource_release(struct nfp_resource *res);
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int nfp_resource_wait(struct nfp_cpp *cpp, const char *name, unsigned int secs);
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u32 nfp_resource_cpp_id(struct nfp_resource *res);
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const char *nfp_resource_name(struct nfp_resource *res);
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u64 nfp_resource_address(struct nfp_resource *res);
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u64 nfp_resource_size(struct nfp_resource *res);
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#endif /* !__NFP_H__ */
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