1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
2 /* Copyright(c) 2014 - 2020 Intel Corporation */
3 #include <linux/kernel.h>
4 #include <linux/module.h>
6 #include <linux/init.h>
7 #include <linux/types.h>
9 #include <linux/slab.h>
10 #include <linux/errno.h>
11 #include <linux/device.h>
12 #include <linux/dma-mapping.h>
13 #include <linux/platform_device.h>
14 #include <linux/workqueue.h>
16 #include <adf_accel_devices.h>
17 #include <adf_common_drv.h>
19 #include "adf_c62xvf_hw_data.h"
21 #define ADF_SYSTEM_DEVICE(device_id) \
22 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
24 static const struct pci_device_id adf_pci_tbl[] = {
25 ADF_SYSTEM_DEVICE(ADF_C62XIOV_PCI_DEVICE_ID),
28 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
30 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
31 static void adf_remove(struct pci_dev *dev);
33 static struct pci_driver adf_driver = {
34 .id_table = adf_pci_tbl,
35 .name = ADF_C62XVF_DEVICE_NAME,
40 static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
42 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
43 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
46 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
48 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
49 struct adf_accel_dev *pf;
52 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
53 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
56 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
59 if (accel_dev->hw_device) {
60 switch (accel_pci_dev->pci_dev->device) {
61 case ADF_C62XIOV_PCI_DEVICE_ID:
62 adf_clean_hw_data_c62xiov(accel_dev->hw_device);
67 kfree(accel_dev->hw_device);
68 accel_dev->hw_device = NULL;
70 adf_cfg_dev_remove(accel_dev);
71 debugfs_remove(accel_dev->debugfs_dir);
72 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
73 adf_devmgr_rm_dev(accel_dev, pf);
76 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
78 struct adf_accel_dev *accel_dev;
79 struct adf_accel_dev *pf;
80 struct adf_accel_pci *accel_pci_dev;
81 struct adf_hw_device_data *hw_data;
82 char name[ADF_DEVICE_NAME_LENGTH];
83 unsigned int i, bar_nr;
84 unsigned long bar_mask;
87 switch (ent->device) {
88 case ADF_C62XIOV_PCI_DEVICE_ID:
91 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
95 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
96 dev_to_node(&pdev->dev));
100 accel_dev->is_vf = true;
101 pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
102 accel_pci_dev = &accel_dev->accel_pci_dev;
103 accel_pci_dev->pci_dev = pdev;
105 /* Add accel device to accel table */
106 if (adf_devmgr_add_dev(accel_dev, pf)) {
107 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
111 INIT_LIST_HEAD(&accel_dev->crypto_list);
113 accel_dev->owner = THIS_MODULE;
114 /* Allocate and configure device configuration structure */
115 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
116 dev_to_node(&pdev->dev));
121 accel_dev->hw_device = hw_data;
122 adf_init_hw_data_c62xiov(accel_dev->hw_device);
124 /* Get Accelerators and Accelerators Engines masks */
125 hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
126 hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
127 accel_pci_dev->sku = hw_data->get_sku(hw_data);
129 /* Create dev top level debugfs entry */
130 snprintf(name, sizeof(name), "%s%s_%02x:%02d.%d",
131 ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name,
132 pdev->bus->number, PCI_SLOT(pdev->devfn),
133 PCI_FUNC(pdev->devfn));
135 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
137 /* Create device configuration table */
138 ret = adf_cfg_dev_add(accel_dev);
142 /* enable PCI device */
143 if (pci_enable_device(pdev)) {
148 /* set dma identifier */
149 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
150 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
151 dev_err(&pdev->dev, "No usable DMA configuration\n");
153 goto out_err_disable;
155 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
159 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
162 if (pci_request_regions(pdev, ADF_C62XVF_DEVICE_NAME)) {
164 goto out_err_disable;
167 /* Find and map all the device's BARS */
169 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
170 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
171 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
173 bar->base_addr = pci_resource_start(pdev, bar_nr);
176 bar->size = pci_resource_len(pdev, bar_nr);
177 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
178 if (!bar->virt_addr) {
179 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
181 goto out_err_free_reg;
184 pci_set_master(pdev);
185 /* Completion for VF2PF request/response message exchange */
186 init_completion(&accel_dev->vf.iov_msg_completion);
188 ret = qat_crypto_dev_config(accel_dev);
190 goto out_err_free_reg;
192 set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
194 ret = adf_dev_init(accel_dev);
196 goto out_err_dev_shutdown;
198 ret = adf_dev_start(accel_dev);
200 goto out_err_dev_stop;
205 adf_dev_stop(accel_dev);
206 out_err_dev_shutdown:
207 adf_dev_shutdown(accel_dev);
209 pci_release_regions(accel_pci_dev->pci_dev);
211 pci_disable_device(accel_pci_dev->pci_dev);
213 adf_cleanup_accel(accel_dev);
218 static void adf_remove(struct pci_dev *pdev)
220 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
223 pr_err("QAT: Driver removal failed\n");
226 adf_dev_stop(accel_dev);
227 adf_dev_shutdown(accel_dev);
228 adf_cleanup_accel(accel_dev);
229 adf_cleanup_pci_dev(accel_dev);
233 static int __init adfdrv_init(void)
235 request_module("intel_qat");
237 if (pci_register_driver(&adf_driver)) {
238 pr_err("QAT: Driver initialization failed\n");
244 static void __exit adfdrv_release(void)
246 pci_unregister_driver(&adf_driver);
247 adf_clean_vf_map(true);
250 module_init(adfdrv_init);
251 module_exit(adfdrv_release);
253 MODULE_LICENSE("Dual BSD/GPL");
254 MODULE_AUTHOR("Intel");
255 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
256 MODULE_VERSION(ADF_DRV_VERSION);