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dd0f3683 TS |
1 | /* |
2 | This file is provided under a dual BSD/GPLv2 license. When using or | |
3 | redistributing this file, you may do so under either license. | |
4 | ||
5 | GPL LICENSE SUMMARY | |
6 | Copyright(c) 2014 Intel Corporation. | |
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of version 2 of the GNU General Public License as | |
9 | published by the Free Software Foundation. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License for more details. | |
15 | ||
16 | Contact Information: | |
17 | qat-linux@intel.com | |
18 | ||
19 | BSD LICENSE | |
20 | Copyright(c) 2014 Intel Corporation. | |
21 | Redistribution and use in source and binary forms, with or without | |
22 | modification, are permitted provided that the following conditions | |
23 | are met: | |
24 | ||
25 | * Redistributions of source code must retain the above copyright | |
26 | notice, this list of conditions and the following disclaimer. | |
27 | * Redistributions in binary form must reproduce the above copyright | |
28 | notice, this list of conditions and the following disclaimer in | |
29 | the documentation and/or other materials provided with the | |
30 | distribution. | |
31 | * Neither the name of Intel Corporation nor the names of its | |
32 | contributors may be used to endorse or promote products derived | |
33 | from this software without specific prior written permission. | |
34 | ||
35 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
36 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
37 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
38 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
39 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
40 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
41 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
42 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
43 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
44 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
45 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
46 | */ | |
47 | #include <linux/kernel.h> | |
48 | #include <linux/module.h> | |
49 | #include <linux/pci.h> | |
50 | #include <linux/init.h> | |
51 | #include <linux/types.h> | |
52 | #include <linux/fs.h> | |
53 | #include <linux/slab.h> | |
54 | #include <linux/errno.h> | |
55 | #include <linux/device.h> | |
56 | #include <linux/dma-mapping.h> | |
57 | #include <linux/platform_device.h> | |
58 | #include <linux/workqueue.h> | |
59 | #include <linux/io.h> | |
60 | #include <adf_accel_devices.h> | |
61 | #include <adf_common_drv.h> | |
62 | #include <adf_cfg.h> | |
dd0f3683 | 63 | #include "adf_dh895xccvf_hw_data.h" |
dd0f3683 TS |
64 | |
65 | #define ADF_SYSTEM_DEVICE(device_id) \ | |
66 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
67 | ||
68 | static const struct pci_device_id adf_pci_tbl[] = { | |
69 | ADF_SYSTEM_DEVICE(ADF_DH895XCCIOV_PCI_DEVICE_ID), | |
70 | {0,} | |
71 | }; | |
72 | MODULE_DEVICE_TABLE(pci, adf_pci_tbl); | |
73 | ||
74 | static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent); | |
75 | static void adf_remove(struct pci_dev *dev); | |
76 | ||
77 | static struct pci_driver adf_driver = { | |
78 | .id_table = adf_pci_tbl, | |
1a72d3a6 | 79 | .name = ADF_DH895XCCVF_DEVICE_NAME, |
dd0f3683 TS |
80 | .probe = adf_probe, |
81 | .remove = adf_remove, | |
82 | }; | |
83 | ||
84 | static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) | |
85 | { | |
86 | pci_release_regions(accel_dev->accel_pci_dev.pci_dev); | |
87 | pci_disable_device(accel_dev->accel_pci_dev.pci_dev); | |
88 | } | |
89 | ||
90 | static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) | |
91 | { | |
92 | struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev; | |
93 | struct adf_accel_dev *pf; | |
94 | int i; | |
95 | ||
96 | for (i = 0; i < ADF_PCI_MAX_BARS; i++) { | |
97 | struct adf_bar *bar = &accel_pci_dev->pci_bars[i]; | |
98 | ||
99 | if (bar->virt_addr) | |
100 | pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr); | |
101 | } | |
102 | ||
103 | if (accel_dev->hw_device) { | |
104 | switch (accel_pci_dev->pci_dev->device) { | |
105 | case ADF_DH895XCCIOV_PCI_DEVICE_ID: | |
106 | adf_clean_hw_data_dh895xcciov(accel_dev->hw_device); | |
107 | break; | |
108 | default: | |
109 | break; | |
110 | } | |
111 | kfree(accel_dev->hw_device); | |
112 | accel_dev->hw_device = NULL; | |
113 | } | |
114 | adf_cfg_dev_remove(accel_dev); | |
115 | debugfs_remove(accel_dev->debugfs_dir); | |
116 | pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn); | |
117 | adf_devmgr_rm_dev(accel_dev, pf); | |
118 | } | |
119 | ||
dd0f3683 TS |
120 | static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
121 | { | |
122 | struct adf_accel_dev *accel_dev; | |
123 | struct adf_accel_dev *pf; | |
124 | struct adf_accel_pci *accel_pci_dev; | |
125 | struct adf_hw_device_data *hw_data; | |
126 | char name[ADF_DEVICE_NAME_LENGTH]; | |
127 | unsigned int i, bar_nr; | |
128 | int ret, bar_mask; | |
129 | ||
130 | switch (ent->device) { | |
131 | case ADF_DH895XCCIOV_PCI_DEVICE_ID: | |
132 | break; | |
133 | default: | |
134 | dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device); | |
135 | return -ENODEV; | |
136 | } | |
137 | ||
138 | accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, | |
139 | dev_to_node(&pdev->dev)); | |
140 | if (!accel_dev) | |
141 | return -ENOMEM; | |
142 | ||
143 | accel_dev->is_vf = true; | |
144 | pf = adf_devmgr_pci_to_accel_dev(pdev->physfn); | |
145 | accel_pci_dev = &accel_dev->accel_pci_dev; | |
146 | accel_pci_dev->pci_dev = pdev; | |
147 | ||
148 | /* Add accel device to accel table */ | |
149 | if (adf_devmgr_add_dev(accel_dev, pf)) { | |
150 | dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); | |
151 | kfree(accel_dev); | |
152 | return -EFAULT; | |
153 | } | |
154 | INIT_LIST_HEAD(&accel_dev->crypto_list); | |
155 | ||
156 | accel_dev->owner = THIS_MODULE; | |
157 | /* Allocate and configure device configuration structure */ | |
158 | hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, | |
159 | dev_to_node(&pdev->dev)); | |
160 | if (!hw_data) { | |
161 | ret = -ENOMEM; | |
162 | goto out_err; | |
163 | } | |
164 | accel_dev->hw_device = hw_data; | |
c52b6733 | 165 | adf_init_hw_data_dh895xcciov(accel_dev->hw_device); |
dd0f3683 TS |
166 | |
167 | /* Get Accelerators and Accelerators Engines masks */ | |
168 | hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses); | |
169 | hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses); | |
170 | accel_pci_dev->sku = hw_data->get_sku(hw_data); | |
171 | ||
172 | /* Create dev top level debugfs entry */ | |
173 | snprintf(name, sizeof(name), "%s%s_%02x:%02d.%02d", | |
174 | ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name, | |
175 | pdev->bus->number, PCI_SLOT(pdev->devfn), | |
176 | PCI_FUNC(pdev->devfn)); | |
177 | ||
178 | accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); | |
179 | if (!accel_dev->debugfs_dir) { | |
180 | dev_err(&pdev->dev, "Could not create debugfs dir %s\n", name); | |
181 | ret = -EINVAL; | |
182 | goto out_err; | |
183 | } | |
184 | ||
185 | /* Create device configuration table */ | |
186 | ret = adf_cfg_dev_add(accel_dev); | |
187 | if (ret) | |
188 | goto out_err; | |
189 | ||
190 | /* enable PCI device */ | |
191 | if (pci_enable_device(pdev)) { | |
192 | ret = -EFAULT; | |
193 | goto out_err; | |
194 | } | |
195 | ||
196 | /* set dma identifier */ | |
197 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
198 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { | |
199 | dev_err(&pdev->dev, "No usable DMA configuration\n"); | |
200 | ret = -EFAULT; | |
201 | goto out_err_disable; | |
202 | } else { | |
203 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
204 | } | |
205 | ||
206 | } else { | |
207 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
208 | } | |
209 | ||
1a72d3a6 | 210 | if (pci_request_regions(pdev, ADF_DH895XCCVF_DEVICE_NAME)) { |
dd0f3683 TS |
211 | ret = -EFAULT; |
212 | goto out_err_disable; | |
213 | } | |
214 | ||
215 | /* Find and map all the device's BARS */ | |
216 | i = 0; | |
217 | bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); | |
218 | for_each_set_bit(bar_nr, (const unsigned long *)&bar_mask, | |
219 | ADF_PCI_MAX_BARS * 2) { | |
220 | struct adf_bar *bar = &accel_pci_dev->pci_bars[i++]; | |
221 | ||
222 | bar->base_addr = pci_resource_start(pdev, bar_nr); | |
223 | if (!bar->base_addr) | |
224 | break; | |
225 | bar->size = pci_resource_len(pdev, bar_nr); | |
226 | bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0); | |
227 | if (!bar->virt_addr) { | |
228 | dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr); | |
229 | ret = -EFAULT; | |
230 | goto out_err_free_reg; | |
231 | } | |
232 | } | |
233 | pci_set_master(pdev); | |
234 | /* Completion for VF2PF request/response message exchange */ | |
235 | init_completion(&accel_dev->vf.iov_msg_completion); | |
236 | ||
1a72d3a6 | 237 | ret = qat_crypto_dev_config(accel_dev); |
dd0f3683 TS |
238 | if (ret) |
239 | goto out_err_free_reg; | |
240 | ||
241 | ret = adf_dev_init(accel_dev); | |
242 | if (ret) | |
243 | goto out_err_dev_shutdown; | |
244 | ||
245 | ret = adf_dev_start(accel_dev); | |
246 | if (ret) | |
247 | goto out_err_dev_stop; | |
248 | ||
249 | return ret; | |
250 | ||
251 | out_err_dev_stop: | |
252 | adf_dev_stop(accel_dev); | |
253 | out_err_dev_shutdown: | |
254 | adf_dev_shutdown(accel_dev); | |
255 | out_err_free_reg: | |
256 | pci_release_regions(accel_pci_dev->pci_dev); | |
257 | out_err_disable: | |
258 | pci_disable_device(accel_pci_dev->pci_dev); | |
259 | out_err: | |
260 | adf_cleanup_accel(accel_dev); | |
261 | kfree(accel_dev); | |
262 | return ret; | |
263 | } | |
264 | ||
265 | static void adf_remove(struct pci_dev *pdev) | |
266 | { | |
267 | struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); | |
268 | ||
269 | if (!accel_dev) { | |
270 | pr_err("QAT: Driver removal failed\n"); | |
271 | return; | |
272 | } | |
273 | if (adf_dev_stop(accel_dev)) | |
274 | dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n"); | |
275 | ||
276 | adf_dev_shutdown(accel_dev); | |
277 | adf_cleanup_accel(accel_dev); | |
278 | adf_cleanup_pci_dev(accel_dev); | |
279 | kfree(accel_dev); | |
280 | } | |
281 | ||
282 | static int __init adfdrv_init(void) | |
283 | { | |
284 | request_module("intel_qat"); | |
285 | ||
286 | if (pci_register_driver(&adf_driver)) { | |
287 | pr_err("QAT: Driver initialization failed\n"); | |
288 | return -EFAULT; | |
289 | } | |
290 | return 0; | |
291 | } | |
292 | ||
293 | static void __exit adfdrv_release(void) | |
294 | { | |
295 | pci_unregister_driver(&adf_driver); | |
296 | adf_clean_vf_map(true); | |
297 | } | |
298 | ||
299 | module_init(adfdrv_init); | |
300 | module_exit(adfdrv_release); | |
301 | ||
302 | MODULE_LICENSE("Dual BSD/GPL"); | |
303 | MODULE_AUTHOR("Intel"); | |
304 | MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); | |
305 | MODULE_VERSION(ADF_DRV_VERSION); |