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890c55f4 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> | |
63 | #include "adf_c3xxx_hw_data.h" | |
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_C3XXX_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, | |
79 | .name = ADF_C3XXX_DEVICE_NAME, | |
80 | .probe = adf_probe, | |
81 | .remove = adf_remove, | |
82 | .sriov_configure = adf_sriov_configure, | |
83 | }; | |
84 | ||
85 | static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) | |
86 | { | |
87 | pci_release_regions(accel_dev->accel_pci_dev.pci_dev); | |
88 | pci_disable_device(accel_dev->accel_pci_dev.pci_dev); | |
89 | } | |
90 | ||
91 | static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) | |
92 | { | |
93 | struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev; | |
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_C3XXX_PCI_DEVICE_ID: | |
106 | adf_clean_hw_data_c3xxx(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 | adf_devmgr_rm_dev(accel_dev, NULL); | |
117 | } | |
118 | ||
119 | static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
120 | { | |
121 | struct adf_accel_dev *accel_dev; | |
122 | struct adf_accel_pci *accel_pci_dev; | |
123 | struct adf_hw_device_data *hw_data; | |
124 | char name[ADF_DEVICE_NAME_LENGTH]; | |
125 | unsigned int i, bar_nr; | |
126 | int ret, bar_mask; | |
127 | ||
128 | switch (ent->device) { | |
129 | case ADF_C3XXX_PCI_DEVICE_ID: | |
130 | break; | |
131 | default: | |
132 | dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device); | |
133 | return -ENODEV; | |
134 | } | |
135 | ||
136 | if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { | |
137 | /* If the accelerator is connected to a node with no memory | |
138 | * there is no point in using the accelerator since the remote | |
139 | * memory transaction will be very slow. */ | |
140 | dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); | |
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, | |
145 | dev_to_node(&pdev->dev)); | |
146 | if (!accel_dev) | |
147 | return -ENOMEM; | |
148 | ||
149 | INIT_LIST_HEAD(&accel_dev->crypto_list); | |
150 | accel_pci_dev = &accel_dev->accel_pci_dev; | |
151 | accel_pci_dev->pci_dev = pdev; | |
152 | ||
153 | /* Add accel device to accel table. | |
154 | * This should be called before adf_cleanup_accel is called */ | |
155 | if (adf_devmgr_add_dev(accel_dev, NULL)) { | |
156 | dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); | |
157 | kfree(accel_dev); | |
158 | return -EFAULT; | |
159 | } | |
160 | ||
161 | accel_dev->owner = THIS_MODULE; | |
162 | /* Allocate and configure device configuration structure */ | |
163 | hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, | |
164 | dev_to_node(&pdev->dev)); | |
165 | if (!hw_data) { | |
166 | ret = -ENOMEM; | |
167 | goto out_err; | |
168 | } | |
169 | ||
170 | accel_dev->hw_device = hw_data; | |
171 | adf_init_hw_data_c3xxx(accel_dev->hw_device); | |
172 | pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); | |
173 | pci_read_config_dword(pdev, ADF_DEVICE_FUSECTL_OFFSET, | |
174 | &hw_data->fuses); | |
175 | ||
176 | /* Get Accelerators and Accelerators Engines masks */ | |
177 | hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses); | |
178 | hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses); | |
179 | accel_pci_dev->sku = hw_data->get_sku(hw_data); | |
180 | /* If the device has no acceleration engines then ignore it. */ | |
181 | if (!hw_data->accel_mask || !hw_data->ae_mask || | |
182 | ((~hw_data->ae_mask) & 0x01)) { | |
183 | dev_err(&pdev->dev, "No acceleration units found"); | |
184 | ret = -EFAULT; | |
185 | goto out_err; | |
186 | } | |
187 | ||
188 | /* Create dev top level debugfs entry */ | |
189 | snprintf(name, sizeof(name), "%s%s_%02x:%02d.%02d", | |
190 | ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name, | |
191 | pdev->bus->number, PCI_SLOT(pdev->devfn), | |
192 | PCI_FUNC(pdev->devfn)); | |
193 | ||
194 | accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); | |
195 | if (!accel_dev->debugfs_dir) { | |
196 | dev_err(&pdev->dev, "Could not create debugfs dir %s\n", name); | |
197 | ret = -EINVAL; | |
198 | goto out_err; | |
199 | } | |
200 | ||
201 | /* Create device configuration table */ | |
202 | ret = adf_cfg_dev_add(accel_dev); | |
203 | if (ret) | |
204 | goto out_err; | |
205 | ||
206 | /* enable PCI device */ | |
207 | if (pci_enable_device(pdev)) { | |
208 | ret = -EFAULT; | |
209 | goto out_err; | |
210 | } | |
211 | ||
212 | /* set dma identifier */ | |
213 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
214 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { | |
215 | dev_err(&pdev->dev, "No usable DMA configuration\n"); | |
216 | ret = -EFAULT; | |
217 | goto out_err_disable; | |
218 | } else { | |
219 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
220 | } | |
221 | ||
222 | } else { | |
223 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
224 | } | |
225 | ||
226 | if (pci_request_regions(pdev, ADF_C3XXX_DEVICE_NAME)) { | |
227 | ret = -EFAULT; | |
228 | goto out_err_disable; | |
229 | } | |
230 | ||
231 | /* Read accelerator capabilities mask */ | |
232 | pci_read_config_dword(pdev, ADF_DEVICE_LEGFUSE_OFFSET, | |
233 | &hw_data->accel_capabilities_mask); | |
234 | ||
235 | /* Find and map all the device's BARS */ | |
236 | i = 0; | |
237 | bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); | |
238 | for_each_set_bit(bar_nr, (const unsigned long *)&bar_mask, | |
239 | ADF_PCI_MAX_BARS * 2) { | |
240 | struct adf_bar *bar = &accel_pci_dev->pci_bars[i++]; | |
241 | ||
242 | bar->base_addr = pci_resource_start(pdev, bar_nr); | |
243 | if (!bar->base_addr) | |
244 | break; | |
245 | bar->size = pci_resource_len(pdev, bar_nr); | |
246 | bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0); | |
247 | if (!bar->virt_addr) { | |
248 | dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr); | |
249 | ret = -EFAULT; | |
250 | goto out_err_free_reg; | |
251 | } | |
252 | } | |
253 | pci_set_master(pdev); | |
254 | ||
255 | if (adf_enable_aer(accel_dev, &adf_driver)) { | |
256 | dev_err(&pdev->dev, "Failed to enable aer\n"); | |
257 | ret = -EFAULT; | |
258 | goto out_err_free_reg; | |
259 | } | |
260 | ||
261 | if (pci_save_state(pdev)) { | |
262 | dev_err(&pdev->dev, "Failed to save pci state\n"); | |
263 | ret = -ENOMEM; | |
264 | goto out_err_free_reg; | |
265 | } | |
266 | ||
267 | ret = qat_crypto_dev_config(accel_dev); | |
268 | if (ret) | |
269 | goto out_err_free_reg; | |
270 | ||
271 | ret = adf_dev_init(accel_dev); | |
272 | if (ret) | |
273 | goto out_err_dev_shutdown; | |
274 | ||
275 | ret = adf_dev_start(accel_dev); | |
276 | if (ret) | |
277 | goto out_err_dev_stop; | |
278 | ||
279 | return ret; | |
280 | ||
281 | out_err_dev_stop: | |
282 | adf_dev_stop(accel_dev); | |
283 | out_err_dev_shutdown: | |
284 | adf_dev_shutdown(accel_dev); | |
285 | out_err_free_reg: | |
286 | pci_release_regions(accel_pci_dev->pci_dev); | |
287 | out_err_disable: | |
288 | pci_disable_device(accel_pci_dev->pci_dev); | |
289 | out_err: | |
290 | adf_cleanup_accel(accel_dev); | |
291 | kfree(accel_dev); | |
292 | return ret; | |
293 | } | |
294 | ||
295 | static void adf_remove(struct pci_dev *pdev) | |
296 | { | |
297 | struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); | |
298 | ||
299 | if (!accel_dev) { | |
300 | pr_err("QAT: Driver removal failed\n"); | |
301 | return; | |
302 | } | |
303 | if (adf_dev_stop(accel_dev)) | |
304 | dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n"); | |
305 | ||
306 | adf_dev_shutdown(accel_dev); | |
307 | adf_disable_aer(accel_dev); | |
308 | adf_cleanup_accel(accel_dev); | |
309 | adf_cleanup_pci_dev(accel_dev); | |
310 | kfree(accel_dev); | |
311 | } | |
312 | ||
313 | static int __init adfdrv_init(void) | |
314 | { | |
315 | request_module("intel_qat"); | |
316 | ||
317 | if (pci_register_driver(&adf_driver)) { | |
318 | pr_err("QAT: Driver initialization failed\n"); | |
319 | return -EFAULT; | |
320 | } | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static void __exit adfdrv_release(void) | |
325 | { | |
326 | pci_unregister_driver(&adf_driver); | |
327 | } | |
328 | ||
329 | module_init(adfdrv_init); | |
330 | module_exit(adfdrv_release); | |
331 | ||
332 | MODULE_LICENSE("Dual BSD/GPL"); | |
333 | MODULE_AUTHOR("Intel"); | |
334 | MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); | |
335 | MODULE_VERSION(ADF_DRV_VERSION); |