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_dh895xcc_hw_data.h"
21
22 static const struct pci_device_id adf_pci_tbl[] = {
23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_DH895XCC), },
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 static void adf_shutdown(struct pci_dev *dev);
31
32 static struct pci_driver adf_driver = {
33 .id_table = adf_pci_tbl,
34 .name = ADF_DH895XCC_DEVICE_NAME,
35 .probe = adf_probe,
36 .remove = adf_remove,
37 .shutdown = adf_shutdown,
38 .sriov_configure = adf_sriov_configure,
39 .err_handler = &adf_err_handler,
40 };
41
adf_cleanup_pci_dev(struct adf_accel_dev * accel_dev)42 static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
43 {
44 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
45 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
46 }
47
adf_cleanup_accel(struct adf_accel_dev * accel_dev)48 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
49 {
50 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
51 int i;
52
53 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
54 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
55
56 if (bar->virt_addr)
57 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
58 }
59
60 if (accel_dev->hw_device) {
61 switch (accel_pci_dev->pci_dev->device) {
62 case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
63 adf_clean_hw_data_dh895xcc(accel_dev->hw_device);
64 break;
65 default:
66 break;
67 }
68 kfree(accel_dev->hw_device);
69 accel_dev->hw_device = NULL;
70 }
71 adf_dbgfs_exit(accel_dev);
72 adf_cfg_dev_remove(accel_dev);
73 adf_devmgr_rm_dev(accel_dev, NULL);
74 }
75
adf_probe(struct pci_dev * pdev,const struct pci_device_id * ent)76 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
77 {
78 struct adf_accel_dev *accel_dev;
79 struct adf_accel_pci *accel_pci_dev;
80 struct adf_hw_device_data *hw_data;
81 unsigned int i, bar_nr;
82 unsigned long bar_mask;
83 int ret;
84
85 switch (ent->device) {
86 case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
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 /* If the accelerator is connected to a node with no memory
95 * there is no point in using the accelerator since the remote
96 * memory transaction will be very slow. */
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 /* Add accel device to accel table.
111 * This should be called before adf_cleanup_accel is called */
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 /* Allocate and configure device configuration structure */
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_dh895xcc(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 /* Get Accelerators and Accelerators Engines masks */
134 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
135 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
136 accel_pci_dev->sku = hw_data->get_sku(hw_data);
137 /* If the device has no acceleration engines then ignore it. */
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 /* Create device configuration table */
146 ret = adf_cfg_dev_add(accel_dev);
147 if (ret)
148 goto out_err;
149
150 pcie_set_readrq(pdev, 1024);
151
152 /* enable PCI device */
153 if (pci_enable_device(pdev)) {
154 ret = -EFAULT;
155 goto out_err;
156 }
157
158 /* set dma identifier */
159 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
160 if (ret) {
161 dev_err(&pdev->dev, "No usable DMA configuration\n");
162 goto out_err_disable;
163 }
164
165 if (pci_request_regions(pdev, ADF_DH895XCC_DEVICE_NAME)) {
166 ret = -EFAULT;
167 goto out_err_disable;
168 }
169
170 /* Get accelerator capabilities mask */
171 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);
172
173 /* Find and map all the device's BARS */
174 i = 0;
175 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
176 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
177 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
178
179 bar->base_addr = pci_resource_start(pdev, bar_nr);
180 if (!bar->base_addr)
181 break;
182 bar->size = pci_resource_len(pdev, bar_nr);
183 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
184 if (!bar->virt_addr) {
185 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
186 ret = -EFAULT;
187 goto out_err_free_reg;
188 }
189 }
190 pci_set_master(pdev);
191
192 if (pci_save_state(pdev)) {
193 dev_err(&pdev->dev, "Failed to save pci state\n");
194 ret = -ENOMEM;
195 goto out_err_free_reg;
196 }
197
198 adf_dbgfs_init(accel_dev);
199
200 ret = adf_dev_up(accel_dev, true);
201 if (ret)
202 goto out_err_dev_stop;
203
204 return ret;
205
206 out_err_dev_stop:
207 adf_dev_down(accel_dev, false);
208 out_err_free_reg:
209 pci_release_regions(accel_pci_dev->pci_dev);
210 out_err_disable:
211 pci_disable_device(accel_pci_dev->pci_dev);
212 out_err:
213 adf_cleanup_accel(accel_dev);
214 kfree(accel_dev);
215 return ret;
216 }
217
adf_remove(struct pci_dev * pdev)218 static void adf_remove(struct pci_dev *pdev)
219 {
220 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
221
222 if (!accel_dev) {
223 pr_err("QAT: Driver removal failed\n");
224 return;
225 }
226 adf_dev_down(accel_dev, false);
227 adf_cleanup_accel(accel_dev);
228 adf_cleanup_pci_dev(accel_dev);
229 kfree(accel_dev);
230 }
231
adf_shutdown(struct pci_dev * pdev)232 static void adf_shutdown(struct pci_dev *pdev)
233 {
234 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
235
236 adf_dev_down(accel_dev, false);
237 }
238
adfdrv_init(void)239 static int __init adfdrv_init(void)
240 {
241 request_module("intel_qat");
242
243 if (pci_register_driver(&adf_driver)) {
244 pr_err("QAT: Driver initialization failed\n");
245 return -EFAULT;
246 }
247 return 0;
248 }
249
adfdrv_release(void)250 static void __exit adfdrv_release(void)
251 {
252 pci_unregister_driver(&adf_driver);
253 }
254
255 module_init(adfdrv_init);
256 module_exit(adfdrv_release);
257
258 MODULE_LICENSE("Dual BSD/GPL");
259 MODULE_AUTHOR("Intel");
260 MODULE_FIRMWARE(ADF_DH895XCC_FW);
261 MODULE_FIRMWARE(ADF_DH895XCC_MMP);
262 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
263 MODULE_VERSION(ADF_DRV_VERSION);
264