1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2 /* Copyright(c) 2020 Intel Corporation */
3 #include <linux/device.h>
4 #include <linux/module.h>
7 #include <adf_accel_devices.h>
9 #include <adf_common_drv.h>
11 #include "adf_4xxx_hw_data.h"
12 #include "qat_crypto.h"
13 #include "adf_transport_access_macros.h"
15 static const struct pci_device_id adf_pci_tbl[] = {
16 { PCI_VDEVICE(INTEL, ADF_4XXX_PCI_DEVICE_ID), },
19 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
21 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
23 if (accel_dev->hw_device) {
24 adf_clean_hw_data_4xxx(accel_dev->hw_device);
25 accel_dev->hw_device = NULL;
27 adf_cfg_dev_remove(accel_dev);
28 debugfs_remove(accel_dev->debugfs_dir);
29 adf_devmgr_rm_dev(accel_dev, NULL);
32 static int adf_crypto_dev_config(struct adf_accel_dev *accel_dev)
34 char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
35 int banks = GET_MAX_BANKS(accel_dev);
36 int cpus = num_online_cpus();
37 unsigned long bank, val;
42 if (adf_hw_dev_has_crypto(accel_dev))
43 instances = min(cpus, banks / 2);
47 ret = adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC);
51 ret = adf_cfg_section_add(accel_dev, "Accelerator0");
55 /* Temporarily set the number of crypto instances to zero to avoid
56 * registering the crypto algorithms.
57 * This will be removed when the algorithms will support the
58 * CRYPTO_TFM_REQ_MAY_BACKLOG flag
62 for (i = 0; i < instances; i++) {
65 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_BANK_NUM, i);
66 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
72 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_BANK_NUM, i);
73 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
78 snprintf(key, sizeof(key), ADF_CY "%d" ADF_ETRMGR_CORE_AFFINITY,
80 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
85 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i);
87 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
93 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i);
94 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
100 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i);
101 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
107 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i);
108 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
114 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i);
115 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
121 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i);
122 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
127 val = ADF_COALESCING_DEF_TIME;
128 snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i);
129 ret = adf_cfg_add_key_value_param(accel_dev, "Accelerator0",
136 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_CY,
141 set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
144 dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n");
148 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
150 struct adf_accel_dev *accel_dev;
151 struct adf_accel_pci *accel_pci_dev;
152 struct adf_hw_device_data *hw_data;
153 char name[ADF_DEVICE_NAME_LENGTH];
154 unsigned int i, bar_nr;
155 unsigned long bar_mask;
159 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {
161 * If the accelerator is connected to a node with no memory
162 * there is no point in using the accelerator since the remote
163 * memory transaction will be very slow.
165 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");
169 accel_dev = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL);
173 INIT_LIST_HEAD(&accel_dev->crypto_list);
174 accel_pci_dev = &accel_dev->accel_pci_dev;
175 accel_pci_dev->pci_dev = pdev;
178 * Add accel device to accel table
179 * This should be called before adf_cleanup_accel is called
181 if (adf_devmgr_add_dev(accel_dev, NULL)) {
182 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
186 accel_dev->owner = THIS_MODULE;
187 /* Allocate and initialise device hardware meta-data structure */
188 hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL);
194 accel_dev->hw_device = hw_data;
195 adf_init_hw_data_4xxx(accel_dev->hw_device);
197 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
198 pci_read_config_dword(pdev, ADF_4XXX_FUSECTL4_OFFSET, &hw_data->fuses);
200 /* Get Accelerators and Accelerators Engines masks */
201 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
202 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
203 accel_pci_dev->sku = hw_data->get_sku(hw_data);
204 /* If the device has no acceleration engines then ignore it */
205 if (!hw_data->accel_mask || !hw_data->ae_mask ||
206 (~hw_data->ae_mask & 0x01)) {
207 dev_err(&pdev->dev, "No acceleration units found.\n");
212 /* Create dev top level debugfs entry */
213 snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX,
214 hw_data->dev_class->name, pci_name(pdev));
216 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
218 /* Create device configuration table */
219 ret = adf_cfg_dev_add(accel_dev);
223 /* Enable PCI device */
224 ret = pcim_enable_device(pdev);
226 dev_err(&pdev->dev, "Can't enable PCI device.\n");
230 /* Set DMA identifier */
231 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
233 dev_err(&pdev->dev, "No usable DMA configuration.\n");
237 /* Get accelerator capabilities mask */
238 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);
240 /* Find and map all the device's BARS */
241 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_4XXX_BAR_MASK;
243 ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev));
245 dev_err(&pdev->dev, "Failed to map pci regions.\n");
250 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {
251 bar = &accel_pci_dev->pci_bars[i++];
252 bar->virt_addr = pcim_iomap_table(pdev)[bar_nr];
255 pci_set_master(pdev);
257 adf_enable_aer(accel_dev);
259 if (pci_save_state(pdev)) {
260 dev_err(&pdev->dev, "Failed to save pci state.\n");
262 goto out_err_disable_aer;
265 ret = adf_crypto_dev_config(accel_dev);
267 goto out_err_disable_aer;
269 ret = adf_dev_init(accel_dev);
271 goto out_err_dev_shutdown;
273 ret = adf_dev_start(accel_dev);
275 goto out_err_dev_stop;
280 adf_dev_stop(accel_dev);
281 out_err_dev_shutdown:
282 adf_dev_shutdown(accel_dev);
284 adf_disable_aer(accel_dev);
286 adf_cleanup_accel(accel_dev);
290 static void adf_remove(struct pci_dev *pdev)
292 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
295 pr_err("QAT: Driver removal failed\n");
298 adf_dev_stop(accel_dev);
299 adf_dev_shutdown(accel_dev);
300 adf_disable_aer(accel_dev);
301 adf_cleanup_accel(accel_dev);
304 static struct pci_driver adf_driver = {
305 .id_table = adf_pci_tbl,
306 .name = ADF_4XXX_DEVICE_NAME,
308 .remove = adf_remove,
309 .sriov_configure = adf_sriov_configure,
310 .err_handler = &adf_err_handler,
313 module_pci_driver(adf_driver);
315 MODULE_LICENSE("Dual BSD/GPL");
316 MODULE_AUTHOR("Intel");
318 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
319 MODULE_VERSION(ADF_DRV_VERSION);
320 MODULE_SOFTDEP("pre: crypto-intel_qat");