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7afa232e 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_transport_access_macros.h> | |
64 | #include "adf_dh895xcc_hw_data.h" | |
65 | #include "adf_drv.h" | |
66 | ||
67 | static const char adf_driver_name[] = ADF_DH895XCC_DEVICE_NAME; | |
68 | ||
69 | #define ADF_SYSTEM_DEVICE(device_id) \ | |
70 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
71 | ||
72 | static const struct pci_device_id adf_pci_tbl[] = { | |
73 | ADF_SYSTEM_DEVICE(ADF_DH895XCC_PCI_DEVICE_ID), | |
74 | {0,} | |
75 | }; | |
76 | MODULE_DEVICE_TABLE(pci, adf_pci_tbl); | |
77 | ||
78 | static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent); | |
79 | static void adf_remove(struct pci_dev *dev); | |
80 | ||
81 | static struct pci_driver adf_driver = { | |
82 | .id_table = adf_pci_tbl, | |
83 | .name = adf_driver_name, | |
84 | .probe = adf_probe, | |
85 | .remove = adf_remove | |
86 | }; | |
87 | ||
88 | static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) | |
89 | { | |
90 | struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev; | |
91 | int i; | |
92 | ||
22e4dda0 | 93 | adf_dev_shutdown(accel_dev); |
7afa232e TS |
94 | |
95 | for (i = 0; i < ADF_PCI_MAX_BARS; i++) { | |
96 | struct adf_bar *bar = &accel_pci_dev->pci_bars[i]; | |
97 | ||
98 | if (bar->virt_addr) | |
99 | pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr); | |
100 | } | |
101 | ||
102 | if (accel_dev->hw_device) { | |
103 | switch (accel_dev->hw_device->pci_dev_id) { | |
104 | case ADF_DH895XCC_PCI_DEVICE_ID: | |
105 | adf_clean_hw_data_dh895xcc(accel_dev->hw_device); | |
106 | break; | |
107 | default: | |
108 | break; | |
109 | } | |
110 | kfree(accel_dev->hw_device); | |
111 | } | |
112 | adf_cfg_dev_remove(accel_dev); | |
113 | debugfs_remove(accel_dev->debugfs_dir); | |
114 | adf_devmgr_rm_dev(accel_dev); | |
115 | pci_release_regions(accel_pci_dev->pci_dev); | |
116 | pci_disable_device(accel_pci_dev->pci_dev); | |
117 | kfree(accel_dev); | |
118 | } | |
119 | ||
22e4dda0 | 120 | static int adf_dev_configure(struct adf_accel_dev *accel_dev) |
7afa232e TS |
121 | { |
122 | int cpus = num_online_cpus(); | |
123 | int banks = GET_MAX_BANKS(accel_dev); | |
124 | int instances = min(cpus, banks); | |
125 | char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES]; | |
126 | int i; | |
127 | unsigned long val; | |
128 | ||
129 | if (adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC)) | |
130 | goto err; | |
131 | if (adf_cfg_section_add(accel_dev, "Accelerator0")) | |
132 | goto err; | |
133 | for (i = 0; i < instances; i++) { | |
134 | val = i; | |
135 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_BANK_NUM, i); | |
136 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
137 | key, (void *)&val, ADF_DEC)) | |
138 | goto err; | |
139 | ||
140 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_ETRMGR_CORE_AFFINITY, | |
141 | i); | |
142 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
143 | key, (void *)&val, ADF_DEC)) | |
144 | goto err; | |
145 | ||
146 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i); | |
147 | val = 128; | |
148 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
149 | key, (void *)&val, ADF_DEC)) | |
150 | goto err; | |
151 | ||
152 | val = 512; | |
153 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i); | |
154 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
155 | key, (void *)&val, ADF_DEC)) | |
156 | goto err; | |
157 | ||
158 | val = 0; | |
159 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i); | |
160 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
161 | key, (void *)&val, ADF_DEC)) | |
162 | goto err; | |
163 | ||
164 | val = 2; | |
165 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i); | |
166 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
167 | key, (void *)&val, ADF_DEC)) | |
168 | goto err; | |
169 | ||
170 | val = 4; | |
171 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_TX, i); | |
172 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
173 | key, (void *)&val, ADF_DEC)) | |
174 | goto err; | |
175 | ||
176 | val = 8; | |
177 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i); | |
178 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
179 | key, (void *)&val, ADF_DEC)) | |
180 | goto err; | |
181 | ||
182 | val = 10; | |
183 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i); | |
184 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
185 | key, (void *)&val, ADF_DEC)) | |
186 | goto err; | |
187 | ||
188 | val = 12; | |
189 | snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_RX, i); | |
190 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
191 | key, (void *)&val, ADF_DEC)) | |
192 | goto err; | |
193 | ||
194 | val = ADF_COALESCING_DEF_TIME; | |
195 | snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i); | |
196 | if (adf_cfg_add_key_value_param(accel_dev, "Accelerator0", | |
197 | key, (void *)&val, ADF_DEC)) | |
198 | goto err; | |
199 | } | |
200 | ||
201 | val = i; | |
202 | if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, | |
203 | ADF_NUM_CY, (void *)&val, ADF_DEC)) | |
204 | goto err; | |
205 | ||
206 | set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status); | |
22e4dda0 | 207 | return 0; |
7afa232e TS |
208 | err: |
209 | dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n"); | |
210 | return -EINVAL; | |
211 | } | |
212 | ||
213 | static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
214 | { | |
215 | struct adf_accel_dev *accel_dev; | |
216 | struct adf_accel_pci *accel_pci_dev; | |
217 | struct adf_hw_device_data *hw_data; | |
7afa232e TS |
218 | char name[ADF_DEVICE_NAME_LENGTH]; |
219 | unsigned int i, bar_nr; | |
7afa232e TS |
220 | int ret; |
221 | ||
222 | switch (ent->device) { | |
223 | case ADF_DH895XCC_PCI_DEVICE_ID: | |
224 | break; | |
225 | default: | |
226 | dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device); | |
227 | return -ENODEV; | |
228 | } | |
229 | ||
09adc878 TS |
230 | if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { |
231 | /* If the accelerator is connected to a node with no memory | |
232 | * there is no point in using the accelerator since the remote | |
233 | * memory transaction will be very slow. */ | |
234 | dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, | |
64a31be3 | 239 | dev_to_node(&pdev->dev)); |
7afa232e TS |
240 | if (!accel_dev) |
241 | return -ENOMEM; | |
242 | ||
7afa232e TS |
243 | INIT_LIST_HEAD(&accel_dev->crypto_list); |
244 | ||
245 | /* Add accel device to accel table. | |
246 | * This should be called before adf_cleanup_accel is called */ | |
247 | if (adf_devmgr_add_dev(accel_dev)) { | |
248 | dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); | |
249 | kfree(accel_dev); | |
250 | return -EFAULT; | |
251 | } | |
252 | ||
253 | accel_dev->owner = THIS_MODULE; | |
254 | /* Allocate and configure device configuration structure */ | |
09adc878 TS |
255 | hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, |
256 | dev_to_node(&pdev->dev)); | |
7afa232e TS |
257 | if (!hw_data) { |
258 | ret = -ENOMEM; | |
259 | goto out_err; | |
260 | } | |
261 | ||
262 | accel_dev->hw_device = hw_data; | |
263 | switch (ent->device) { | |
264 | case ADF_DH895XCC_PCI_DEVICE_ID: | |
265 | adf_init_hw_data_dh895xcc(accel_dev->hw_device); | |
266 | break; | |
267 | default: | |
268 | return -ENODEV; | |
269 | } | |
270 | accel_pci_dev = &accel_dev->accel_pci_dev; | |
271 | pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); | |
272 | pci_read_config_dword(pdev, ADF_DH895XCC_FUSECTL_OFFSET, | |
273 | &hw_data->fuses); | |
274 | ||
275 | /* Get Accelerators and Accelerators Engines masks */ | |
276 | hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses); | |
277 | hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses); | |
278 | accel_pci_dev->sku = hw_data->get_sku(hw_data); | |
279 | accel_pci_dev->pci_dev = pdev; | |
280 | /* If the device has no acceleration engines then ignore it. */ | |
281 | if (!hw_data->accel_mask || !hw_data->ae_mask || | |
282 | ((~hw_data->ae_mask) & 0x01)) { | |
283 | dev_err(&pdev->dev, "No acceleration units found"); | |
284 | ret = -EFAULT; | |
285 | goto out_err; | |
286 | } | |
287 | ||
288 | /* Create dev top level debugfs entry */ | |
289 | snprintf(name, sizeof(name), "%s%s_dev%d", ADF_DEVICE_NAME_PREFIX, | |
290 | hw_data->dev_class->name, hw_data->instance_id); | |
291 | accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); | |
292 | if (!accel_dev->debugfs_dir) { | |
293 | dev_err(&pdev->dev, "Could not create debugfs dir\n"); | |
294 | ret = -EINVAL; | |
295 | goto out_err; | |
296 | } | |
297 | ||
298 | /* Create device configuration table */ | |
299 | ret = adf_cfg_dev_add(accel_dev); | |
300 | if (ret) | |
301 | goto out_err; | |
302 | ||
303 | /* enable PCI device */ | |
304 | if (pci_enable_device(pdev)) { | |
305 | ret = -EFAULT; | |
306 | goto out_err; | |
307 | } | |
308 | ||
309 | /* set dma identifier */ | |
310 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
311 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { | |
312 | dev_err(&pdev->dev, "No usable DMA configuration\n"); | |
313 | ret = -EFAULT; | |
314 | goto out_err; | |
315 | } else { | |
316 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
317 | } | |
318 | ||
319 | } else { | |
320 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
321 | } | |
322 | ||
323 | if (pci_request_regions(pdev, adf_driver_name)) { | |
324 | ret = -EFAULT; | |
325 | goto out_err; | |
326 | } | |
327 | ||
328 | /* Read accelerator capabilities mask */ | |
329 | pci_read_config_dword(pdev, ADF_DH895XCC_LEGFUSE_OFFSET, | |
330 | &hw_data->accel_capabilities_mask); | |
331 | ||
332 | /* Find and map all the device's BARS */ | |
333 | for (i = 0; i < ADF_PCI_MAX_BARS; i++) { | |
334 | struct adf_bar *bar = &accel_pci_dev->pci_bars[i]; | |
335 | ||
336 | bar_nr = i * 2; | |
337 | bar->base_addr = pci_resource_start(pdev, bar_nr); | |
338 | if (!bar->base_addr) | |
339 | break; | |
340 | bar->size = pci_resource_len(pdev, bar_nr); | |
341 | bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0); | |
342 | if (!bar->virt_addr) { | |
343 | dev_err(&pdev->dev, "Failed to map BAR %d\n", i); | |
344 | ret = -EFAULT; | |
345 | goto out_err; | |
346 | } | |
7afa232e TS |
347 | } |
348 | pci_set_master(pdev); | |
349 | ||
350 | if (adf_enable_aer(accel_dev, &adf_driver)) { | |
351 | dev_err(&pdev->dev, "Failed to enable aer\n"); | |
352 | ret = -EFAULT; | |
353 | goto out_err; | |
354 | } | |
355 | ||
7afa232e TS |
356 | if (pci_save_state(pdev)) { |
357 | dev_err(&pdev->dev, "Failed to save pci state\n"); | |
358 | ret = -ENOMEM; | |
359 | goto out_err; | |
360 | } | |
361 | ||
22e4dda0 AB |
362 | ret = adf_dev_configure(accel_dev); |
363 | if (ret) | |
364 | goto out_err; | |
365 | ||
366 | ret = adf_dev_init(accel_dev); | |
367 | if (ret) | |
368 | goto out_err; | |
7afa232e | 369 | |
22e4dda0 | 370 | ret = adf_dev_start(accel_dev); |
7afa232e TS |
371 | if (ret) { |
372 | adf_dev_stop(accel_dev); | |
373 | goto out_err; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | out_err: | |
378 | adf_cleanup_accel(accel_dev); | |
379 | return ret; | |
380 | } | |
381 | ||
83ce01d2 | 382 | static void adf_remove(struct pci_dev *pdev) |
7afa232e TS |
383 | { |
384 | struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); | |
385 | ||
386 | if (!accel_dev) { | |
387 | pr_err("QAT: Driver removal failed\n"); | |
388 | return; | |
389 | } | |
390 | if (adf_dev_stop(accel_dev)) | |
391 | dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n"); | |
392 | adf_disable_aer(accel_dev); | |
393 | adf_cleanup_accel(accel_dev); | |
394 | } | |
395 | ||
396 | static int __init adfdrv_init(void) | |
397 | { | |
398 | request_module("intel_qat"); | |
399 | if (qat_admin_register()) | |
400 | return -EFAULT; | |
401 | ||
402 | if (pci_register_driver(&adf_driver)) { | |
403 | pr_err("QAT: Driver initialization failed\n"); | |
404 | return -EFAULT; | |
405 | } | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static void __exit adfdrv_release(void) | |
410 | { | |
411 | pci_unregister_driver(&adf_driver); | |
412 | qat_admin_unregister(); | |
413 | } | |
414 | ||
415 | module_init(adfdrv_init); | |
416 | module_exit(adfdrv_release); | |
417 | ||
418 | MODULE_LICENSE("Dual BSD/GPL"); | |
419 | MODULE_AUTHOR("Intel"); | |
83530d81 | 420 | MODULE_FIRMWARE("qat_895xcc.bin"); |
7afa232e | 421 | MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); |