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haven: hcall: Add Haven hypercall interface
Add common Haven hypercall interface implementing all of the doorbell APIs and required message queue APIs for an initial message queue driver. Change-Id: I2f4cbe99b76d115a42e86d1a43f361e4793a9723 Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Elliot Berman
Murali Nalajala
parent
77c2c03606
commit
eff7e54127
2 changed files with 291 additions and 0 deletions
273
include/linux/haven/hcall.h
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273
include/linux/haven/hcall.h
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef __HH_HCALL_H
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#define __HH_HCALL_H
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#include <linux/err.h>
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#include <linux/types.h>
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#include <linux/haven/hcall_common.h>
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#include <linux/haven/hh_common.h>
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#include <asm/haven/hcall.h>
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struct hh_hcall_hyp_identify_resp {
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u64 api_info;
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u64 flags[3];
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};
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static inline int hh_hcall_hyp_identify(struct hh_hcall_hyp_identify_resp *resp)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6000,
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(struct hh_hcall_args){ 0 },
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&_resp);
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if (!ret && resp) {
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resp->api_info = _resp.resp0;
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resp->flags[0] = _resp.resp1;
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resp->flags[1] = _resp.resp2;
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resp->flags[2] = _resp.resp3;
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}
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return ret < 0 ? ret : 0;
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}
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static inline int hh_hcall_dbl_bind(hh_capid_t dbl_capid, hh_capid_t vic_capid,
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hh_virq_handle_t virq_info)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6010,
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(struct hh_hcall_args){ dbl_capid, vic_capid, virq_info },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_dbl_unbind(hh_capid_t dbl_capid)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6011,
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(struct hh_hcall_args){ dbl_capid },
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&_resp);
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return ret;
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}
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struct hh_hcall_dbl_send_resp {
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u64 old_flags;
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};
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static inline int hh_hcall_dbl_send(hh_capid_t dbl_capid,
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hh_dbl_flags_t new_flags,
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struct hh_hcall_dbl_send_resp *resp)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6012,
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(struct hh_hcall_args){ dbl_capid, new_flags },
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&_resp);
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if (!ret && resp)
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resp->old_flags = _resp.resp1;
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return ret;
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}
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struct hh_hcall_dbl_recv_resp {
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u64 old_flags;
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};
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static inline int hh_hcall_dbl_recv(hh_capid_t dbl_capid,
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hh_dbl_flags_t clear_flags,
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struct hh_hcall_dbl_recv_resp *resp)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6013,
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(struct hh_hcall_args){ dbl_capid, clear_flags },
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&_resp);
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if (!ret && resp)
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resp->old_flags = _resp.resp1;
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return ret;
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}
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static inline int hh_hcall_dbl_reset(hh_capid_t dbl_capid)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6014,
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(struct hh_hcall_args){ dbl_capid },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_dbl_mask(hh_capid_t dbl_capid,
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hh_dbl_flags_t enable_mask,
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hh_dbl_flags_t ack_mask)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6015,
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(struct hh_hcall_args){ dbl_capid, enable_mask, ack_mask },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_bind_send(hh_capid_t msgq_capid,
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hh_capid_t vic_capid,
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hh_virq_handle_t virq_info)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6017,
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(struct hh_hcall_args){ msgq_capid, vic_capid, virq_info },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_bind_recv(hh_capid_t msgq_capid,
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hh_capid_t vic_capid,
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hh_virq_handle_t virq_info)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6018,
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(struct hh_hcall_args){ msgq_capid, vic_capid, virq_info },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_unbind_send(hh_capid_t msgq_capid)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6019,
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(struct hh_hcall_args){ msgq_capid },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_unbind_recv(hh_capid_t msgq_capid)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x601A,
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(struct hh_hcall_args){ msgq_capid },
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&_resp);
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return ret;
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}
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struct hh_hcall_msgq_send_resp {
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bool not_full;
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};
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static inline int hh_hcall_msgq_send(hh_capid_t msgq_capid, size_t size,
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void *data, u64 send_flags,
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struct hh_hcall_msgq_send_resp *resp)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x601B,
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(struct hh_hcall_args){ msgq_capid, size, (unsigned long)data,
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send_flags },
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&_resp);
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if (resp)
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resp->not_full = _resp.resp1;
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return ret;
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}
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struct hh_hcall_msgq_recv_resp {
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size_t recv_size;
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bool not_empty;
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};
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static inline int hh_hcall_msgq_recv(hh_capid_t msgq_capid, void *buffer,
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size_t max_size,
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struct hh_hcall_msgq_recv_resp *resp)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x601C,
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(struct hh_hcall_args){ msgq_capid, (unsigned long)buffer,
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max_size },
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&_resp);
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if (!ret && resp) {
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resp->recv_size = _resp.resp1;
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resp->not_empty = _resp.resp2;
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}
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return ret;
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}
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static inline int hh_hcall_msgq_flush(hh_capid_t msgq_capid)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x601D,
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(struct hh_hcall_args){ msgq_capid },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_configure_send(hh_capid_t msgq_capid,
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long not_full_threshold,
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long not_full_delay)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x601F,
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(struct hh_hcall_args){ msgq_capid, not_full_threshold,
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not_full_delay, -1 },
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&_resp);
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return ret;
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}
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static inline int hh_hcall_msgq_configure_recv(hh_capid_t msgq_capid,
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long not_empty_threshold,
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long not_empty_delay)
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{
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int ret;
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struct hh_hcall_resp _resp = {0};
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ret = _hh_hcall(0x6020,
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(struct hh_hcall_args){ msgq_capid, not_empty_threshold,
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not_empty_delay, -1 },
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&_resp);
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return ret;
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}
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#endif
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18
include/linux/haven/hcall_common.h
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18
include/linux/haven/hcall_common.h
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@ -0,0 +1,18 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef __HH_HCALL_COMMON_H
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#define __HH_HCALL_COMMON_H
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struct hh_hcall_args {
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unsigned long arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
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};
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struct hh_hcall_resp {
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unsigned long resp0, resp1, resp2, resp3, resp4, resp5, resp6, resp7;
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};
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typedef u16 hh_hcall_fnid_t;
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#endif
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