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_dbgfs.h>
20 #include "adf_c3xxxvf_hw_data.h"
21
22 static const struct pci_device_id adf_pci_tbl[] = {
23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF), },
24 { }
25 };
26 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
27
28 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
29 static void adf_remove(struct pci_dev *dev);
30
31 static struct pci_driver adf_driver = {
32 .id_table = adf_pci_tbl,
33 .name = ADF_C3XXXVF_DEVICE_NAME,
34 .probe = adf_probe,
35 .remove = adf_remove,
36 };
37
adf_cleanup_pci_dev(struct adf_accel_dev * accel_dev)38 static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
39 {
40 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
41 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
42 }
43
adf_cleanup_accel(struct adf_accel_dev * accel_dev)44 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
45 {
46 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
47 struct adf_accel_dev *pf;
48 int i;
49
50 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
51 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
52
53 if (bar->virt_addr)
54 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
55 }
56
57 if (accel_dev->hw_device) {
58 switch (accel_pci_dev->pci_dev->device) {
59 case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
60 adf_clean_hw_data_c3xxxiov(accel_dev->hw_device);
61 break;
62 default:
63 break;
64 }
65 kfree(accel_dev->hw_device);
66 accel_dev->hw_device = NULL;
67 }
68 adf_dbgfs_exit(accel_dev);
69 adf_cfg_dev_remove(accel_dev);
70 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
71 adf_devmgr_rm_dev(accel_dev, pf);
72 }
73
adf_probe(struct pci_dev * pdev,const struct pci_device_id * ent)74 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
75 {
76 struct adf_accel_dev *accel_dev;
77 struct adf_accel_dev *pf;
78 struct adf_accel_pci *accel_pci_dev;
79 struct adf_hw_device_data *hw_data;
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_C3XXX_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_c3xxxiov(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 device configuration table */
127 ret = adf_cfg_dev_add(accel_dev);
128 if (ret)
129 goto out_err;
130
131 /* enable PCI device */
132 if (pci_enable_device(pdev)) {
133 ret = -EFAULT;
134 goto out_err;
135 }
136
137 /* set dma identifier */
138 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
139 if (ret) {
140 dev_err(&pdev->dev, "No usable DMA configuration\n");
141 goto out_err_disable;
142 }
143
144 if (pci_request_regions(pdev, ADF_C3XXXVF_DEVICE_NAME)) {
145 ret = -EFAULT;
146 goto out_err_disable;
147 }
148
149 /* Find and map all the device's BARS */
150 i = 0;
151 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
152 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
153 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
154
155 bar->base_addr = pci_resource_start(pdev, bar_nr);
156 if (!bar->base_addr)
157 break;
158 bar->size = pci_resource_len(pdev, bar_nr);
159 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
160 if (!bar->virt_addr) {
161 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
162 ret = -EFAULT;
163 goto out_err_free_reg;
164 }
165 }
166 pci_set_master(pdev);
167 /* Completion for VF2PF request/response message exchange */
168 init_completion(&accel_dev->vf.msg_received);
169
170 adf_dbgfs_init(accel_dev);
171
172 ret = adf_dev_up(accel_dev, false);
173 if (ret)
174 goto out_err_dev_stop;
175
176 return ret;
177
178 out_err_dev_stop:
179 adf_dev_down(accel_dev, false);
180 out_err_free_reg:
181 pci_release_regions(accel_pci_dev->pci_dev);
182 out_err_disable:
183 pci_disable_device(accel_pci_dev->pci_dev);
184 out_err:
185 adf_cleanup_accel(accel_dev);
186 kfree(accel_dev);
187 return ret;
188 }
189
adf_remove(struct pci_dev * pdev)190 static void adf_remove(struct pci_dev *pdev)
191 {
192 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
193
194 if (!accel_dev) {
195 pr_err("QAT: Driver removal failed\n");
196 return;
197 }
198 adf_flush_vf_wq(accel_dev);
199 adf_dev_down(accel_dev, false);
200 adf_cleanup_accel(accel_dev);
201 adf_cleanup_pci_dev(accel_dev);
202 kfree(accel_dev);
203 }
204
adfdrv_init(void)205 static int __init adfdrv_init(void)
206 {
207 request_module("intel_qat");
208
209 if (pci_register_driver(&adf_driver)) {
210 pr_err("QAT: Driver initialization failed\n");
211 return -EFAULT;
212 }
213 return 0;
214 }
215
adfdrv_release(void)216 static void __exit adfdrv_release(void)
217 {
218 pci_unregister_driver(&adf_driver);
219 adf_clean_vf_map(true);
220 }
221
222 module_init(adfdrv_init);
223 module_exit(adfdrv_release);
224
225 MODULE_LICENSE("Dual BSD/GPL");
226 MODULE_AUTHOR("Intel");
227 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
228 MODULE_VERSION(ADF_DRV_VERSION);
229