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_dh895xccvf_hw_data.h"
21 static const struct pci_device_id adf_pci_tbl[] = {
22 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF), },
25 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
27 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
28 static void adf_remove(struct pci_dev *dev);
30 static struct pci_driver adf_driver = {
31 .id_table = adf_pci_tbl,
32 .name = ADF_DH895XCCVF_DEVICE_NAME,
37 static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
39 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
40 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
43 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
45 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
46 struct adf_accel_dev *pf;
49 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
50 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
53 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
56 if (accel_dev->hw_device) {
57 switch (accel_pci_dev->pci_dev->device) {
58 case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
59 adf_clean_hw_data_dh895xcciov(accel_dev->hw_device);
64 kfree(accel_dev->hw_device);
65 accel_dev->hw_device = NULL;
67 adf_cfg_dev_remove(accel_dev);
68 debugfs_remove(accel_dev->debugfs_dir);
69 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
70 adf_devmgr_rm_dev(accel_dev, pf);
73 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
75 struct adf_accel_dev *accel_dev;
76 struct adf_accel_dev *pf;
77 struct adf_accel_pci *accel_pci_dev;
78 struct adf_hw_device_data *hw_data;
79 char name[ADF_DEVICE_NAME_LENGTH];
80 unsigned int i, bar_nr;
81 unsigned long bar_mask;
84 switch (ent->device) {
85 case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
88 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
92 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
93 dev_to_node(&pdev->dev));
97 accel_dev->is_vf = true;
98 pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
99 accel_pci_dev = &accel_dev->accel_pci_dev;
100 accel_pci_dev->pci_dev = pdev;
102 /* Add accel device to accel table */
103 if (adf_devmgr_add_dev(accel_dev, pf)) {
104 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
108 INIT_LIST_HEAD(&accel_dev->crypto_list);
110 accel_dev->owner = THIS_MODULE;
111 /* Allocate and configure device configuration structure */
112 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
113 dev_to_node(&pdev->dev));
118 accel_dev->hw_device = hw_data;
119 adf_init_hw_data_dh895xcciov(accel_dev->hw_device);
121 /* Get Accelerators and Accelerators Engines masks */
122 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
123 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
124 accel_pci_dev->sku = hw_data->get_sku(hw_data);
126 /* Create dev top level debugfs entry */
127 snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX,
128 hw_data->dev_class->name, pci_name(pdev));
130 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
132 /* Create device configuration table */
133 ret = adf_cfg_dev_add(accel_dev);
137 /* enable PCI device */
138 if (pci_enable_device(pdev)) {
143 /* set dma identifier */
144 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));
146 dev_err(&pdev->dev, "No usable DMA configuration\n");
147 goto out_err_disable;
150 if (pci_request_regions(pdev, ADF_DH895XCCVF_DEVICE_NAME)) {
152 goto out_err_disable;
155 /* Find and map all the device's BARS */
157 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
158 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
159 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
161 bar->base_addr = pci_resource_start(pdev, bar_nr);
164 bar->size = pci_resource_len(pdev, bar_nr);
165 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
166 if (!bar->virt_addr) {
167 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
169 goto out_err_free_reg;
172 pci_set_master(pdev);
173 /* Completion for VF2PF request/response message exchange */
174 init_completion(&accel_dev->vf.msg_received);
176 ret = adf_dev_init(accel_dev);
178 goto out_err_dev_shutdown;
180 set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
182 ret = adf_dev_start(accel_dev);
184 goto out_err_dev_stop;
189 adf_dev_stop(accel_dev);
190 out_err_dev_shutdown:
191 adf_dev_shutdown(accel_dev);
193 pci_release_regions(accel_pci_dev->pci_dev);
195 pci_disable_device(accel_pci_dev->pci_dev);
197 adf_cleanup_accel(accel_dev);
202 static void adf_remove(struct pci_dev *pdev)
204 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
207 pr_err("QAT: Driver removal failed\n");
210 adf_flush_vf_wq(accel_dev);
211 adf_dev_stop(accel_dev);
212 adf_dev_shutdown(accel_dev);
213 adf_cleanup_accel(accel_dev);
214 adf_cleanup_pci_dev(accel_dev);
218 static int __init adfdrv_init(void)
220 request_module("intel_qat");
222 if (pci_register_driver(&adf_driver)) {
223 pr_err("QAT: Driver initialization failed\n");
229 static void __exit adfdrv_release(void)
231 pci_unregister_driver(&adf_driver);
232 adf_clean_vf_map(true);
235 module_init(adfdrv_init);
236 module_exit(adfdrv_release);
238 MODULE_LICENSE("Dual BSD/GPL");
239 MODULE_AUTHOR("Intel");
240 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
241 MODULE_VERSION(ADF_DRV_VERSION);