1// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2/* Copyright(c) 2015 - 2021 Intel Corporation */
3#include <linux/delay.h>
4#include <linux/pci.h>
5#include "adf_accel_devices.h"
6#include "adf_pfvf_msg.h"
7#include "adf_pfvf_pf_msg.h"
8#include "adf_pfvf_pf_proto.h"
9
10#define ADF_PF_WAIT_RESTARTING_COMPLETE_DELAY 100
11#define ADF_VF_SHUTDOWN_RETRY 100
12
13void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev)
14{
15 struct adf_accel_vf_info *vf;
16 struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_RESTARTING };
17 int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
18
19 dev_dbg(&GET_DEV(accel_dev), "pf2vf notify restarting\n");
20 for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
21 if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK)
22 vf->restarting = true;
23 else
24 vf->restarting = false;
25
26 if (!vf->init)
27 continue;
28
29 if (adf_send_pf2vf_msg(accel_dev, vf_nr: i, msg))
30 dev_err(&GET_DEV(accel_dev),
31 "Failed to send restarting msg to VF%d\n", i);
32 }
33}
34
35void adf_pf2vf_wait_for_restarting_complete(struct adf_accel_dev *accel_dev)
36{
37 int num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
38 int i, retries = ADF_VF_SHUTDOWN_RETRY;
39 struct adf_accel_vf_info *vf;
40 bool vf_running;
41
42 dev_dbg(&GET_DEV(accel_dev), "pf2vf wait for restarting complete\n");
43 do {
44 vf_running = false;
45 for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++)
46 if (vf->restarting)
47 vf_running = true;
48 if (!vf_running)
49 break;
50 msleep(ADF_PF_WAIT_RESTARTING_COMPLETE_DELAY);
51 } while (--retries);
52
53 if (vf_running)
54 dev_warn(&GET_DEV(accel_dev), "Some VFs are still running\n");
55}
56
57void adf_pf2vf_notify_restarted(struct adf_accel_dev *accel_dev)
58{
59 struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_RESTARTED };
60 int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
61 struct adf_accel_vf_info *vf;
62
63 dev_dbg(&GET_DEV(accel_dev), "pf2vf notify restarted\n");
64 for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
65 if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK &&
66 adf_send_pf2vf_msg(accel_dev, vf_nr: i, msg))
67 dev_err(&GET_DEV(accel_dev),
68 "Failed to send restarted msg to VF%d\n", i);
69 }
70}
71
72void adf_pf2vf_notify_fatal_error(struct adf_accel_dev *accel_dev)
73{
74 struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_FATAL_ERROR };
75 int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
76 struct adf_accel_vf_info *vf;
77
78 dev_dbg(&GET_DEV(accel_dev), "pf2vf notify fatal error\n");
79 for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
80 if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK &&
81 adf_send_pf2vf_msg(accel_dev, vf_nr: i, msg))
82 dev_err(&GET_DEV(accel_dev),
83 "Failed to send fatal error msg to VF%d\n", i);
84 }
85}
86
87int adf_pf_capabilities_msg_provider(struct adf_accel_dev *accel_dev,
88 u8 *buffer, u8 compat)
89{
90 struct adf_hw_device_data *hw_data = accel_dev->hw_device;
91 struct capabilities_v2 caps_msg;
92
93 caps_msg.ext_dc_caps = hw_data->extended_dc_capabilities;
94 caps_msg.capabilities = hw_data->accel_capabilities_mask;
95
96 caps_msg.hdr.version = ADF_PFVF_CAPABILITIES_V2_VERSION;
97 caps_msg.hdr.payload_size =
98 ADF_PFVF_BLKMSG_PAYLOAD_SIZE(struct capabilities_v2);
99
100 memcpy(buffer, &caps_msg, sizeof(caps_msg));
101
102 return 0;
103}
104
105int adf_pf_ring_to_svc_msg_provider(struct adf_accel_dev *accel_dev,
106 u8 *buffer, u8 compat)
107{
108 struct ring_to_svc_map_v1 rts_map_msg;
109
110 rts_map_msg.map = accel_dev->hw_device->ring_to_svc_map;
111 rts_map_msg.hdr.version = ADF_PFVF_RING_TO_SVC_VERSION;
112 rts_map_msg.hdr.payload_size = ADF_PFVF_BLKMSG_PAYLOAD_SIZE(rts_map_msg);
113
114 memcpy(buffer, &rts_map_msg, sizeof(rts_map_msg));
115
116 return 0;
117}
118

source code of linux/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_msg.c