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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a646d6ec90
This patch includes code implementing the modem functionality. There are several communication paths between the AP and modem, separate from the main data path provided by IPA. SMP2P provides primitive messaging and interrupt capability, and QMI allows more complex out-of-band messaging to occur between entities on the AP and modem. (SMP2P and QMI support are added by the next patch.) Management of these (plus the network device implementing the data path) is done by code within "ipa_modem.c". Sort of unrelated, this patch also includes the code supporting the microcontroller CPU present on the IPA. The microcontroller can be used to implement special handling of packets, but at this time we don't support that. Still, it is a component that needs to be initialized, and in the event of a crash we need to do some synchronization between the AP and the microcontroller. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
32 lines
801 B
C
32 lines
801 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2018-2020 Linaro Ltd.
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*/
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#ifndef _IPA_MODEM_H_
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#define _IPA_MODEM_H_
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struct ipa;
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struct ipa_endpoint;
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struct net_device;
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struct sk_buff;
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int ipa_modem_start(struct ipa *ipa);
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int ipa_modem_stop(struct ipa *ipa);
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void ipa_modem_skb_rx(struct net_device *netdev, struct sk_buff *skb);
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void ipa_modem_suspend(struct net_device *netdev);
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void ipa_modem_resume(struct net_device *netdev);
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int ipa_modem_init(struct ipa *ipa, bool modem_init);
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void ipa_modem_exit(struct ipa *ipa);
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int ipa_modem_config(struct ipa *ipa);
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void ipa_modem_deconfig(struct ipa *ipa);
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int ipa_modem_setup(struct ipa *ipa);
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void ipa_modem_teardown(struct ipa *ipa);
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#endif /* _IPA_MODEM_H_ */
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