1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2014 - 2020 Intel Corporation */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
#include <linux/io.h>
#include <adf_accel_devices.h>
#include <adf_common_drv.h>
#include <adf_cfg.h>
#include "adf_c3xxxvf_hw_data.h"
static const struct pci_device_id adf_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF), },
{ }
};
MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
static void adf_remove(struct pci_dev *dev);
static struct pci_driver adf_driver = {
.id_table = adf_pci_tbl,
.name = ADF_C3XXXVF_DEVICE_NAME,
.probe = adf_probe,
.remove = adf_remove,
};
static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
{
pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
}
static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
{
struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
struct adf_accel_dev *pf;
int i;
for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
if (bar->virt_addr)
pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
}
if (accel_dev->hw_device) {
switch (accel_pci_dev->pci_dev->device) {
case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
adf_clean_hw_data_c3xxxiov(accel_dev->hw_device);
break;
default:
break;
}
kfree(accel_dev->hw_device);
accel_dev->hw_device = NULL;
}
adf_cfg_dev_remove(accel_dev);
debugfs_remove(accel_dev->debugfs_dir);
pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
adf_devmgr_rm_dev(accel_dev, pf);
}
static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct adf_accel_dev *accel_dev;
struct adf_accel_dev *pf;
struct adf_accel_pci *accel_pci_dev;
struct adf_hw_device_data *hw_data;
char name[ADF_DEVICE_NAME_LENGTH];
unsigned int i, bar_nr;
unsigned long bar_mask;
int ret;
switch (ent->device) {
case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
break;
default:
dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
return -ENODEV;
}
accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
dev_to_node(&pdev->dev));
if (!accel_dev)
return -ENOMEM;
accel_dev->is_vf = true;
pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
accel_pci_dev = &accel_dev->accel_pci_dev;
accel_pci_dev->pci_dev = pdev;
/* Add accel device to accel table */
if (adf_devmgr_add_dev(accel_dev, pf)) {
dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
kfree(accel_dev);
return -EFAULT;
}
INIT_LIST_HEAD(&accel_dev->crypto_list);
accel_dev->owner = THIS_MODULE;
/* Allocate and configure device configuration structure */
hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
dev_to_node(&pdev->dev));
if (!hw_data) {
ret = -ENOMEM;
goto out_err;
}
accel_dev->hw_device = hw_data;
adf_init_hw_data_c3xxxiov(accel_dev->hw_device);
/* Get Accelerators and Accelerators Engines masks */
hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
accel_pci_dev->sku = hw_data->get_sku(hw_data);
/* Create dev top level debugfs entry */
snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX,
hw_data->dev_class->name, pci_name(pdev));
accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
/* Create device configuration table */
ret = adf_cfg_dev_add(accel_dev);
if (ret)
goto out_err;
/* enable PCI device */
if (pci_enable_device(pdev)) {
ret = -EFAULT;
goto out_err;
}
/* set dma identifier */
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
if (ret) {
dev_err(&pdev->dev, "No usable DMA configuration\n");
goto out_err_disable;
}
if (pci_request_regions(pdev, ADF_C3XXXVF_DEVICE_NAME)) {
ret = -EFAULT;
goto out_err_disable;
}
/* Find and map all the device's BARS */
i = 0;
bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
bar->base_addr = pci_resource_start(pdev, bar_nr);
if (!bar->base_addr)
break;
bar->size = pci_resource_len(pdev, bar_nr);
bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
if (!bar->virt_addr) {
dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
ret = -EFAULT;
goto out_err_free_reg;
}
}
pci_set_master(pdev);
/* Completion for VF2PF request/response message exchange */
init_completion(&accel_dev->vf.msg_received);
ret = adf_dev_init(accel_dev);
if (ret)
goto out_err_dev_shutdown;
set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
ret = adf_dev_start(accel_dev);
if (ret)
goto out_err_dev_stop;
return ret;
out_err_dev_stop:
adf_dev_stop(accel_dev);
out_err_dev_shutdown:
adf_dev_shutdown(accel_dev);
out_err_free_reg:
pci_release_regions(accel_pci_dev->pci_dev);
out_err_disable:
pci_disable_device(accel_pci_dev->pci_dev);
out_err:
adf_cleanup_accel(accel_dev);
kfree(accel_dev);
return ret;
}
static void adf_remove(struct pci_dev *pdev)
{
struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
if (!accel_dev) {
pr_err("QAT: Driver removal failed\n");
return;
}
adf_flush_vf_wq(accel_dev);
adf_dev_stop(accel_dev);
adf_dev_shutdown(accel_dev);
adf_cleanup_accel(accel_dev);
adf_cleanup_pci_dev(accel_dev);
kfree(accel_dev);
}
static int __init adfdrv_init(void)
{
request_module("intel_qat");
if (pci_register_driver(&adf_driver)) {
pr_err("QAT: Driver initialization failed\n");
return -EFAULT;
}
return 0;
}
static void __exit adfdrv_release(void)
{
pci_unregister_driver(&adf_driver);
adf_clean_vf_map(true);
}
module_init(adfdrv_init);
module_exit(adfdrv_release);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Intel");
MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
MODULE_VERSION(ADF_DRV_VERSION);
|
