1
2
3#include <linux/kernel.h>
4#include <linux/module.h>
5#include <linux/pci.h>
6#include <linux/init.h>
7#include <linux/types.h>
8#include <linux/fs.h>
9#include <linux/slab.h>
10#include <linux/errno.h>
11#include <linux/device.h>
12#include <linux/dma-mapping.h>
13#include <linux/platform_device.h>
14#include <linux/workqueue.h>
15#include <linux/io.h>
16#include <adf_accel_devices.h>
17#include <adf_common_drv.h>
18#include <adf_cfg.h>
19#include "adf_c62xvf_hw_data.h"
20
21static const struct pci_device_id adf_pci_tbl[] = {
22 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X_VF), },
23 { }
24};
25MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
26
27static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
28static void adf_remove(struct pci_dev *dev);
29
30static struct pci_driver adf_driver = {
31 .id_table = adf_pci_tbl,
32 .name = ADF_C62XVF_DEVICE_NAME,
33 .probe = adf_probe,
34 .remove = adf_remove,
35};
36
37static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
38{
39 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
40 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
41}
42
43static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
44{
45 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
46 struct adf_accel_dev *pf;
47 int i;
48
49 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
50 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
51
52 if (bar->virt_addr)
53 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
54 }
55
56 if (accel_dev->hw_device) {
57 switch (accel_pci_dev->pci_dev->device) {
58 case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
59 adf_clean_hw_data_c62xiov(accel_dev->hw_device);
60 break;
61 default:
62 break;
63 }
64 kfree(accel_dev->hw_device);
65 accel_dev->hw_device = NULL;
66 }
67 adf_cfg_dev_remove(accel_dev);
68 debugfs_remove(accel_dev->debugfs_dir);
69 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
70 adf_devmgr_rm_dev(accel_dev, pf);
71}
72
73static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
74{
75 struct adf_accel_dev *accel_dev;
76 struct adf_accel_dev *pf;
77 struct adf_accel_pci *accel_pci_dev;
78 struct adf_hw_device_data *hw_data;
79 char name[ADF_DEVICE_NAME_LENGTH];
80 unsigned int i, bar_nr;
81 unsigned long bar_mask;
82 int ret;
83
84 switch (ent->device) {
85 case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
86 break;
87 default:
88 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
89 return -ENODEV;
90 }
91
92 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
93 dev_to_node(&pdev->dev));
94 if (!accel_dev)
95 return -ENOMEM;
96
97 accel_dev->is_vf = true;
98 pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
99 accel_pci_dev = &accel_dev->accel_pci_dev;
100 accel_pci_dev->pci_dev = pdev;
101
102
103 if (adf_devmgr_add_dev(accel_dev, pf)) {
104 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
105 kfree(accel_dev);
106 return -EFAULT;
107 }
108 INIT_LIST_HEAD(&accel_dev->crypto_list);
109
110 accel_dev->owner = THIS_MODULE;
111
112 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
113 dev_to_node(&pdev->dev));
114 if (!hw_data) {
115 ret = -ENOMEM;
116 goto out_err;
117 }
118 accel_dev->hw_device = hw_data;
119 adf_init_hw_data_c62xiov(accel_dev->hw_device);
120
121
122 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
123 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
124 accel_pci_dev->sku = hw_data->get_sku(hw_data);
125
126
127 snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX,
128 hw_data->dev_class->name, pci_name(pdev));
129
130 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
131
132
133 ret = adf_cfg_dev_add(accel_dev);
134 if (ret)
135 goto out_err;
136
137
138 if (pci_enable_device(pdev)) {
139 ret = -EFAULT;
140 goto out_err;
141 }
142
143
144 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
145 if (ret) {
146 dev_err(&pdev->dev, "No usable DMA configuration\n");
147 goto out_err_disable;
148 }
149
150 if (pci_request_regions(pdev, ADF_C62XVF_DEVICE_NAME)) {
151 ret = -EFAULT;
152 goto out_err_disable;
153 }
154
155
156 i = 0;
157 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
158 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
159 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
160
161 bar->base_addr = pci_resource_start(pdev, bar_nr);
162 if (!bar->base_addr)
163 break;
164 bar->size = pci_resource_len(pdev, bar_nr);
165 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
166 if (!bar->virt_addr) {
167 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
168 ret = -EFAULT;
169 goto out_err_free_reg;
170 }
171 }
172 pci_set_master(pdev);
173
174 init_completion(&accel_dev->vf.iov_msg_completion);
175
176 ret = qat_crypto_dev_config(accel_dev);
177 if (ret)
178 goto out_err_free_reg;
179
180 ret = adf_dev_init(accel_dev);
181 if (ret)
182 goto out_err_dev_shutdown;
183
184 set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
185
186 ret = adf_dev_start(accel_dev);
187 if (ret)
188 goto out_err_dev_stop;
189
190 return ret;
191
192out_err_dev_stop:
193 adf_dev_stop(accel_dev);
194out_err_dev_shutdown:
195 adf_dev_shutdown(accel_dev);
196out_err_free_reg:
197 pci_release_regions(accel_pci_dev->pci_dev);
198out_err_disable:
199 pci_disable_device(accel_pci_dev->pci_dev);
200out_err:
201 adf_cleanup_accel(accel_dev);
202 kfree(accel_dev);
203 return ret;
204}
205
206static void adf_remove(struct pci_dev *pdev)
207{
208 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
209
210 if (!accel_dev) {
211 pr_err("QAT: Driver removal failed\n");
212 return;
213 }
214 adf_flush_vf_wq(accel_dev);
215 adf_dev_stop(accel_dev);
216 adf_dev_shutdown(accel_dev);
217 adf_cleanup_accel(accel_dev);
218 adf_cleanup_pci_dev(accel_dev);
219 kfree(accel_dev);
220}
221
222static int __init adfdrv_init(void)
223{
224 request_module("intel_qat");
225
226 if (pci_register_driver(&adf_driver)) {
227 pr_err("QAT: Driver initialization failed\n");
228 return -EFAULT;
229 }
230 return 0;
231}
232
233static void __exit adfdrv_release(void)
234{
235 pci_unregister_driver(&adf_driver);
236 adf_clean_vf_map(true);
237}
238
239module_init(adfdrv_init);
240module_exit(adfdrv_release);
241
242MODULE_LICENSE("Dual BSD/GPL");
243MODULE_AUTHOR("Intel");
244MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
245MODULE_VERSION(ADF_DRV_VERSION);
246
