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 for (i = 0; i < instances; i++) {
58 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_BANK_NUM, i);
59 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
65 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_BANK_NUM, i);
66 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
71 snprintf(key, sizeof(key), ADF_CY "%d" ADF_ETRMGR_CORE_AFFINITY,
73 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
78 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i);
80 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
86 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_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_ASYM_TX, i);
94 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
100 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_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_ASYM_RX, i);
108 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
114 snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i);
115 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
120 val = ADF_COALESCING_DEF_TIME;
121 snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i);
122 ret = adf_cfg_add_key_value_param(accel_dev, "Accelerator0",
129 ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_CY,
134 set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
137 dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n");
141 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
143 struct adf_accel_dev *accel_dev;
144 struct adf_accel_pci *accel_pci_dev;
145 struct adf_hw_device_data *hw_data;
146 char name[ADF_DEVICE_NAME_LENGTH];
147 unsigned int i, bar_nr;
148 unsigned long bar_mask;
152 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {
154 * If the accelerator is connected to a node with no memory
155 * there is no point in using the accelerator since the remote
156 * memory transaction will be very slow.
158 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");
162 accel_dev = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL);
166 INIT_LIST_HEAD(&accel_dev->crypto_list);
167 accel_pci_dev = &accel_dev->accel_pci_dev;
168 accel_pci_dev->pci_dev = pdev;
171 * Add accel device to accel table
172 * This should be called before adf_cleanup_accel is called
174 if (adf_devmgr_add_dev(accel_dev, NULL)) {
175 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
179 accel_dev->owner = THIS_MODULE;
180 /* Allocate and initialise device hardware meta-data structure */
181 hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL);
187 accel_dev->hw_device = hw_data;
188 adf_init_hw_data_4xxx(accel_dev->hw_device);
190 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
191 pci_read_config_dword(pdev, ADF_4XXX_FUSECTL4_OFFSET, &hw_data->fuses);
193 /* Get Accelerators and Accelerators Engines masks */
194 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
195 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
196 accel_pci_dev->sku = hw_data->get_sku(hw_data);
197 /* If the device has no acceleration engines then ignore it */
198 if (!hw_data->accel_mask || !hw_data->ae_mask ||
199 (~hw_data->ae_mask & 0x01)) {
200 dev_err(&pdev->dev, "No acceleration units found.\n");
205 /* Create dev top level debugfs entry */
206 snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX,
207 hw_data->dev_class->name, pci_name(pdev));
209 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
211 /* Create device configuration table */
212 ret = adf_cfg_dev_add(accel_dev);
216 /* Enable PCI device */
217 ret = pcim_enable_device(pdev);
219 dev_err(&pdev->dev, "Can't enable PCI device.\n");
223 /* Set DMA identifier */
224 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
226 dev_err(&pdev->dev, "No usable DMA configuration.\n");
230 /* Get accelerator capabilities mask */
231 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);
233 /* Find and map all the device's BARS */
234 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_4XXX_BAR_MASK;
236 ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev));
238 dev_err(&pdev->dev, "Failed to map pci regions.\n");
243 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {
244 bar = &accel_pci_dev->pci_bars[i++];
245 bar->virt_addr = pcim_iomap_table(pdev)[bar_nr];
248 pci_set_master(pdev);
250 if (adf_enable_aer(accel_dev)) {
251 dev_err(&pdev->dev, "Failed to enable aer.\n");
256 if (pci_save_state(pdev)) {
257 dev_err(&pdev->dev, "Failed to save pci state.\n");
259 goto out_err_disable_aer;
262 ret = adf_crypto_dev_config(accel_dev);
264 goto out_err_disable_aer;
266 ret = adf_dev_init(accel_dev);
268 goto out_err_dev_shutdown;
270 ret = adf_dev_start(accel_dev);
272 goto out_err_dev_stop;
277 adf_dev_stop(accel_dev);
278 out_err_dev_shutdown:
279 adf_dev_shutdown(accel_dev);
281 adf_disable_aer(accel_dev);
283 adf_cleanup_accel(accel_dev);
287 static void adf_remove(struct pci_dev *pdev)
289 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
292 pr_err("QAT: Driver removal failed\n");
295 adf_dev_stop(accel_dev);
296 adf_dev_shutdown(accel_dev);
297 adf_disable_aer(accel_dev);
298 adf_cleanup_accel(accel_dev);
301 static struct pci_driver adf_driver = {
302 .id_table = adf_pci_tbl,
303 .name = ADF_4XXX_DEVICE_NAME,
305 .remove = adf_remove,
306 .sriov_configure = adf_sriov_configure,
309 module_pci_driver(adf_driver);
311 MODULE_LICENSE("Dual BSD/GPL");
312 MODULE_AUTHOR("Intel");
313 MODULE_FIRMWARE(ADF_4XXX_FW);
314 MODULE_FIRMWARE(ADF_4XXX_MMP);
315 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
316 MODULE_VERSION(ADF_DRV_VERSION);
317 MODULE_SOFTDEP("pre: crypto-intel_qat");