1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2 /* Copyright(c) 2014 - 2020 Intel Corporation */
3 #include <linux/mutex.h>
4 #include <linux/list.h>
5 #include <linux/bitops.h>
6 #include <linux/delay.h>
7 #include "adf_accel_devices.h"
9 #include "adf_common_drv.h"
11 static LIST_HEAD(service_table);
12 static DEFINE_MUTEX(service_lock);
14 static void adf_service_add(struct service_hndl *service)
16 mutex_lock(&service_lock);
17 list_add(&service->list, &service_table);
18 mutex_unlock(&service_lock);
21 int adf_service_register(struct service_hndl *service)
23 memset(service->init_status, 0, sizeof(service->init_status));
24 memset(service->start_status, 0, sizeof(service->start_status));
25 adf_service_add(service);
29 static void adf_service_remove(struct service_hndl *service)
31 mutex_lock(&service_lock);
32 list_del(&service->list);
33 mutex_unlock(&service_lock);
36 int adf_service_unregister(struct service_hndl *service)
40 for (i = 0; i < ARRAY_SIZE(service->init_status); i++) {
41 if (service->init_status[i] || service->start_status[i]) {
42 pr_err("QAT: Could not remove active service\n");
46 adf_service_remove(service);
51 * adf_dev_init() - Init data structures and services for the given accel device
52 * @accel_dev: Pointer to acceleration device.
54 * Initialize the ring data structures and the admin comms and arbitration
57 * Return: 0 on success, error code otherwise.
59 int adf_dev_init(struct adf_accel_dev *accel_dev)
61 struct service_hndl *service;
62 struct list_head *list_itr;
63 struct adf_hw_device_data *hw_data = accel_dev->hw_device;
67 dev_err(&GET_DEV(accel_dev),
68 "Failed to init device - hw_data not set\n");
72 if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status)) {
73 dev_err(&GET_DEV(accel_dev), "Device not configured\n");
77 if (adf_init_etr_data(accel_dev)) {
78 dev_err(&GET_DEV(accel_dev), "Failed initialize etr\n");
82 if (hw_data->init_admin_comms && hw_data->init_admin_comms(accel_dev)) {
83 dev_err(&GET_DEV(accel_dev), "Failed initialize admin comms\n");
87 if (hw_data->init_arb && hw_data->init_arb(accel_dev)) {
88 dev_err(&GET_DEV(accel_dev), "Failed initialize hw arbiter\n");
92 hw_data->enable_ints(accel_dev);
94 if (adf_ae_init(accel_dev)) {
95 dev_err(&GET_DEV(accel_dev),
96 "Failed to initialise Acceleration Engine\n");
99 set_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status);
101 if (adf_ae_fw_load(accel_dev)) {
102 dev_err(&GET_DEV(accel_dev),
103 "Failed to load acceleration FW\n");
106 set_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
108 if (hw_data->alloc_irq(accel_dev)) {
109 dev_err(&GET_DEV(accel_dev), "Failed to allocate interrupts\n");
112 set_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
115 * Subservice initialisation is divided into two stages: init and start.
116 * This is to facilitate any ordering dependencies between services
117 * prior to starting any of the accelerators.
119 list_for_each(list_itr, &service_table) {
120 service = list_entry(list_itr, struct service_hndl, list);
121 if (service->event_hld(accel_dev, ADF_EVENT_INIT)) {
122 dev_err(&GET_DEV(accel_dev),
123 "Failed to initialise service %s\n",
127 set_bit(accel_dev->accel_id, service->init_status);
130 hw_data->enable_error_correction(accel_dev);
131 ret = hw_data->enable_vf2pf_comms(accel_dev);
135 EXPORT_SYMBOL_GPL(adf_dev_init);
138 * adf_dev_start() - Start acceleration service for the given accel device
139 * @accel_dev: Pointer to acceleration device.
141 * Function notifies all the registered services that the acceleration device
142 * is ready to be used.
143 * To be used by QAT device specific drivers.
145 * Return: 0 on success, error code otherwise.
147 int adf_dev_start(struct adf_accel_dev *accel_dev)
149 struct adf_hw_device_data *hw_data = accel_dev->hw_device;
150 struct service_hndl *service;
151 struct list_head *list_itr;
153 set_bit(ADF_STATUS_STARTING, &accel_dev->status);
155 if (adf_ae_start(accel_dev)) {
156 dev_err(&GET_DEV(accel_dev), "AE Start Failed\n");
159 set_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
161 if (hw_data->send_admin_init(accel_dev)) {
162 dev_err(&GET_DEV(accel_dev), "Failed to send init message\n");
166 list_for_each(list_itr, &service_table) {
167 service = list_entry(list_itr, struct service_hndl, list);
168 if (service->event_hld(accel_dev, ADF_EVENT_START)) {
169 dev_err(&GET_DEV(accel_dev),
170 "Failed to start service %s\n",
174 set_bit(accel_dev->accel_id, service->start_status);
177 clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
178 set_bit(ADF_STATUS_STARTED, &accel_dev->status);
180 if (!list_empty(&accel_dev->crypto_list) &&
181 (qat_algs_register() || qat_asym_algs_register())) {
182 dev_err(&GET_DEV(accel_dev),
183 "Failed to register crypto algs\n");
184 set_bit(ADF_STATUS_STARTING, &accel_dev->status);
185 clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
190 EXPORT_SYMBOL_GPL(adf_dev_start);
193 * adf_dev_stop() - Stop acceleration service for the given accel device
194 * @accel_dev: Pointer to acceleration device.
196 * Function notifies all the registered services that the acceleration device
198 * To be used by QAT device specific drivers.
202 void adf_dev_stop(struct adf_accel_dev *accel_dev)
204 struct service_hndl *service;
205 struct list_head *list_itr;
209 if (!adf_dev_started(accel_dev) &&
210 !test_bit(ADF_STATUS_STARTING, &accel_dev->status))
213 clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
214 clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
216 if (!list_empty(&accel_dev->crypto_list)) {
217 qat_algs_unregister();
218 qat_asym_algs_unregister();
221 list_for_each(list_itr, &service_table) {
222 service = list_entry(list_itr, struct service_hndl, list);
223 if (!test_bit(accel_dev->accel_id, service->start_status))
225 ret = service->event_hld(accel_dev, ADF_EVENT_STOP);
227 clear_bit(accel_dev->accel_id, service->start_status);
228 } else if (ret == -EAGAIN) {
230 clear_bit(accel_dev->accel_id, service->start_status);
237 if (test_bit(ADF_STATUS_AE_STARTED, &accel_dev->status)) {
238 if (adf_ae_stop(accel_dev))
239 dev_err(&GET_DEV(accel_dev), "failed to stop AE\n");
241 clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
244 EXPORT_SYMBOL_GPL(adf_dev_stop);
247 * adf_dev_shutdown() - shutdown acceleration services and data strucutures
248 * @accel_dev: Pointer to acceleration device
250 * Cleanup the ring data structures and the admin comms and arbitration
253 void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
255 struct adf_hw_device_data *hw_data = accel_dev->hw_device;
256 struct service_hndl *service;
257 struct list_head *list_itr;
260 dev_err(&GET_DEV(accel_dev),
261 "QAT: Failed to shutdown device - hw_data not set\n");
265 if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) {
266 adf_ae_fw_release(accel_dev);
267 clear_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
270 if (test_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status)) {
271 if (adf_ae_shutdown(accel_dev))
272 dev_err(&GET_DEV(accel_dev),
273 "Failed to shutdown Accel Engine\n");
275 clear_bit(ADF_STATUS_AE_INITIALISED,
279 list_for_each(list_itr, &service_table) {
280 service = list_entry(list_itr, struct service_hndl, list);
281 if (!test_bit(accel_dev->accel_id, service->init_status))
283 if (service->event_hld(accel_dev, ADF_EVENT_SHUTDOWN))
284 dev_err(&GET_DEV(accel_dev),
285 "Failed to shutdown service %s\n",
288 clear_bit(accel_dev->accel_id, service->init_status);
291 hw_data->disable_iov(accel_dev);
293 if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
294 hw_data->free_irq(accel_dev);
295 clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
298 /* Delete configuration only if not restarting */
299 if (!test_bit(ADF_STATUS_RESTARTING, &accel_dev->status))
300 adf_cfg_del_all(accel_dev);
302 if (hw_data->exit_arb)
303 hw_data->exit_arb(accel_dev);
305 if (hw_data->exit_admin_comms)
306 hw_data->exit_admin_comms(accel_dev);
308 adf_cleanup_etr_data(accel_dev);
309 adf_dev_restore(accel_dev);
311 EXPORT_SYMBOL_GPL(adf_dev_shutdown);
313 int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev)
315 struct service_hndl *service;
316 struct list_head *list_itr;
318 list_for_each(list_itr, &service_table) {
319 service = list_entry(list_itr, struct service_hndl, list);
320 if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING))
321 dev_err(&GET_DEV(accel_dev),
322 "Failed to restart service %s.\n",
328 int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev)
330 struct service_hndl *service;
331 struct list_head *list_itr;
333 list_for_each(list_itr, &service_table) {
334 service = list_entry(list_itr, struct service_hndl, list);
335 if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED))
336 dev_err(&GET_DEV(accel_dev),
337 "Failed to restart service %s.\n",