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_c62x_hw_data.h"
20
21#define ADF_SYSTEM_DEVICE(device_id) \
22 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
23
24static const struct pci_device_id adf_pci_tbl[] = {
25 ADF_SYSTEM_DEVICE(ADF_C62X_PCI_DEVICE_ID),
26 {0,}
27};
28MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
29
30static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
31static void adf_remove(struct pci_dev *dev);
32
33static struct pci_driver adf_driver = {
34 .id_table = adf_pci_tbl,
35 .name = ADF_C62X_DEVICE_NAME,
36 .probe = adf_probe,
37 .remove = adf_remove,
38 .sriov_configure = adf_sriov_configure,
39};
40
41static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
42{
43 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
44 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
45}
46
47static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
48{
49 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
50 int i;
51
52 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
53 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
54
55 if (bar->virt_addr)
56 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
57 }
58
59 if (accel_dev->hw_device) {
60 switch (accel_pci_dev->pci_dev->device) {
61 case ADF_C62X_PCI_DEVICE_ID:
62 adf_clean_hw_data_c62x(accel_dev->hw_device);
63 break;
64 default:
65 break;
66 }
67 kfree(accel_dev->hw_device);
68 accel_dev->hw_device = NULL;
69 }
70 adf_cfg_dev_remove(accel_dev);
71 debugfs_remove(accel_dev->debugfs_dir);
72 adf_devmgr_rm_dev(accel_dev, NULL);
73}
74
75static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
76{
77 struct adf_accel_dev *accel_dev;
78 struct adf_accel_pci *accel_pci_dev;
79 struct adf_hw_device_data *hw_data;
80 char name[ADF_DEVICE_NAME_LENGTH];
81 unsigned int i, bar_nr;
82 unsigned long bar_mask;
83 int ret;
84
85 switch (ent->device) {
86 case ADF_C62X_PCI_DEVICE_ID:
87 break;
88 default:
89 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
90 return -ENODEV;
91 }
92
93 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {
94
95
96
97 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");
98 return -EINVAL;
99 }
100
101 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
102 dev_to_node(&pdev->dev));
103 if (!accel_dev)
104 return -ENOMEM;
105
106 INIT_LIST_HEAD(&accel_dev->crypto_list);
107 accel_pci_dev = &accel_dev->accel_pci_dev;
108 accel_pci_dev->pci_dev = pdev;
109
110
111
112 if (adf_devmgr_add_dev(accel_dev, NULL)) {
113 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
114 kfree(accel_dev);
115 return -EFAULT;
116 }
117
118 accel_dev->owner = THIS_MODULE;
119
120 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
121 dev_to_node(&pdev->dev));
122 if (!hw_data) {
123 ret = -ENOMEM;
124 goto out_err;
125 }
126
127 accel_dev->hw_device = hw_data;
128 adf_init_hw_data_c62x(accel_dev->hw_device);
129 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
130 pci_read_config_dword(pdev, ADF_DEVICE_FUSECTL_OFFSET,
131 &hw_data->fuses);
132
133
134 hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
135 hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
136 accel_pci_dev->sku = hw_data->get_sku(hw_data);
137
138 if (!hw_data->accel_mask || !hw_data->ae_mask ||
139 ((~hw_data->ae_mask) & 0x01)) {
140 dev_err(&pdev->dev, "No acceleration units found");
141 ret = -EFAULT;
142 goto out_err;
143 }
144
145
146 snprintf(name, sizeof(name), "%s%s_%02x:%02d.%d",
147 ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name,
148 pdev->bus->number, PCI_SLOT(pdev->devfn),
149 PCI_FUNC(pdev->devfn));
150
151 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
152
153
154 ret = adf_cfg_dev_add(accel_dev);
155 if (ret)
156 goto out_err;
157
158
159 if (pci_enable_device(pdev)) {
160 ret = -EFAULT;
161 goto out_err;
162 }
163
164
165 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
166 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
167 dev_err(&pdev->dev, "No usable DMA configuration\n");
168 ret = -EFAULT;
169 goto out_err_disable;
170 } else {
171 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
172 }
173
174 } else {
175 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
176 }
177
178 if (pci_request_regions(pdev, ADF_C62X_DEVICE_NAME)) {
179 ret = -EFAULT;
180 goto out_err_disable;
181 }
182
183
184 pci_read_config_dword(pdev, ADF_DEVICE_LEGFUSE_OFFSET,
185 &hw_data->accel_capabilities_mask);
186
187
188 i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 0;
189 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
190 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
191 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
192
193 bar->base_addr = pci_resource_start(pdev, bar_nr);
194 if (!bar->base_addr)
195 break;
196 bar->size = pci_resource_len(pdev, bar_nr);
197 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
198 if (!bar->virt_addr) {
199 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
200 ret = -EFAULT;
201 goto out_err_free_reg;
202 }
203 }
204 pci_set_master(pdev);
205
206 if (adf_enable_aer(accel_dev, &adf_driver)) {
207 dev_err(&pdev->dev, "Failed to enable aer\n");
208 ret = -EFAULT;
209 goto out_err_free_reg;
210 }
211
212 if (pci_save_state(pdev)) {
213 dev_err(&pdev->dev, "Failed to save pci state\n");
214 ret = -ENOMEM;
215 goto out_err_free_reg;
216 }
217
218 ret = qat_crypto_dev_config(accel_dev);
219 if (ret)
220 goto out_err_free_reg;
221
222 ret = adf_dev_init(accel_dev);
223 if (ret)
224 goto out_err_dev_shutdown;
225
226 ret = adf_dev_start(accel_dev);
227 if (ret)
228 goto out_err_dev_stop;
229
230 return ret;
231
232out_err_dev_stop:
233 adf_dev_stop(accel_dev);
234out_err_dev_shutdown:
235 adf_dev_shutdown(accel_dev);
236out_err_free_reg:
237 pci_release_regions(accel_pci_dev->pci_dev);
238out_err_disable:
239 pci_disable_device(accel_pci_dev->pci_dev);
240out_err:
241 adf_cleanup_accel(accel_dev);
242 kfree(accel_dev);
243 return ret;
244}
245
246static void adf_remove(struct pci_dev *pdev)
247{
248 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
249
250 if (!accel_dev) {
251 pr_err("QAT: Driver removal failed\n");
252 return;
253 }
254 adf_dev_stop(accel_dev);
255 adf_dev_shutdown(accel_dev);
256 adf_disable_aer(accel_dev);
257 adf_cleanup_accel(accel_dev);
258 adf_cleanup_pci_dev(accel_dev);
259 kfree(accel_dev);
260}
261
262static int __init adfdrv_init(void)
263{
264 request_module("intel_qat");
265
266 if (pci_register_driver(&adf_driver)) {
267 pr_err("QAT: Driver initialization failed\n");
268 return -EFAULT;
269 }
270 return 0;
271}
272
273static void __exit adfdrv_release(void)
274{
275 pci_unregister_driver(&adf_driver);
276}
277
278module_init(adfdrv_init);
279module_exit(adfdrv_release);
280
281MODULE_LICENSE("Dual BSD/GPL");
282MODULE_AUTHOR("Intel");
283MODULE_FIRMWARE(ADF_C62X_FW);
284MODULE_FIRMWARE(ADF_C62X_MMP);
285MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
286MODULE_VERSION(ADF_DRV_VERSION);
287
