1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2 /* Copyright(c) 2014 - 2020 Intel Corporation */
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_dh895xccvf_hw_data.h"
20
21 static const struct pci_device_id adf_pci_tbl[] = {
22 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF), },
23 { }
24 };
25 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
26
27 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
28 static void adf_remove(struct pci_dev *dev);
29
30 static struct pci_driver adf_driver = {
31 .id_table = adf_pci_tbl,
32 .name = ADF_DH895XCCVF_DEVICE_NAME,
33 .probe = adf_probe,
34 .remove = adf_remove,
35 };
36
adf_cleanup_pci_dev(struct adf_accel_dev * accel_dev)37 static 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
adf_cleanup_accel(struct adf_accel_dev * accel_dev)43 static 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_DH895XCC_VF:
59 adf_clean_hw_data_dh895xcciov(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
adf_probe(struct pci_dev * pdev,const struct pci_device_id * ent)73 static 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_DH895XCC_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 /* Add accel device to accel table */
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 /* Allocate and configure device configuration structure */
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_dh895xcciov(accel_dev->hw_device);
120
121 /* Get Accelerators and Accelerators Engines masks */
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 /* Create dev top level debugfs entry */
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 /* Create device configuration table */
133 ret = adf_cfg_dev_add(accel_dev);
134 if (ret)
135 goto out_err;
136
137 /* enable PCI device */
138 if (pci_enable_device(pdev)) {
139 ret = -EFAULT;
140 goto out_err;
141 }
142
143 /* set dma identifier */
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_DH895XCCVF_DEVICE_NAME)) {
151 ret = -EFAULT;
152 goto out_err_disable;
153 }
154
155 /* Find and map all the device's BARS */
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 /* Completion for VF2PF request/response message exchange */
174 init_completion(&accel_dev->vf.msg_received);
175
176 ret = adf_dev_init(accel_dev);
177 if (ret)
178 goto out_err_dev_shutdown;
179
180 set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
181
182 ret = adf_dev_start(accel_dev);
183 if (ret)
184 goto out_err_dev_stop;
185
186 return ret;
187
188 out_err_dev_stop:
189 adf_dev_stop(accel_dev);
190 out_err_dev_shutdown:
191 adf_dev_shutdown(accel_dev);
192 out_err_free_reg:
193 pci_release_regions(accel_pci_dev->pci_dev);
194 out_err_disable:
195 pci_disable_device(accel_pci_dev->pci_dev);
196 out_err:
197 adf_cleanup_accel(accel_dev);
198 kfree(accel_dev);
199 return ret;
200 }
201
adf_remove(struct pci_dev * pdev)202 static void adf_remove(struct pci_dev *pdev)
203 {
204 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
205
206 if (!accel_dev) {
207 pr_err("QAT: Driver removal failed\n");
208 return;
209 }
210 adf_flush_vf_wq(accel_dev);
211 adf_dev_stop(accel_dev);
212 adf_dev_shutdown(accel_dev);
213 adf_cleanup_accel(accel_dev);
214 adf_cleanup_pci_dev(accel_dev);
215 kfree(accel_dev);
216 }
217
adfdrv_init(void)218 static int __init adfdrv_init(void)
219 {
220 request_module("intel_qat");
221
222 if (pci_register_driver(&adf_driver)) {
223 pr_err("QAT: Driver initialization failed\n");
224 return -EFAULT;
225 }
226 return 0;
227 }
228
adfdrv_release(void)229 static void __exit adfdrv_release(void)
230 {
231 pci_unregister_driver(&adf_driver);
232 adf_clean_vf_map(true);
233 }
234
235 module_init(adfdrv_init);
236 module_exit(adfdrv_release);
237
238 MODULE_LICENSE("Dual BSD/GPL");
239 MODULE_AUTHOR("Intel");
240 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
241 MODULE_VERSION(ADF_DRV_VERSION);
242
