1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright(c) 2023 Intel Corporation */
3#include <linux/device.h>
4#include <linux/module.h>
5#include <linux/pci.h>
6
7#include <adf_accel_devices.h>
8#include <adf_gen4_hw_data.h>
9#include <adf_gen4_config.h>
10#include <adf_cfg.h>
11#include <adf_common_drv.h>
12#include <adf_dbgfs.h>
13
14#include "adf_420xx_hw_data.h"
15
16static const struct pci_device_id adf_pci_tbl[] = {
17 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_420XX) },
18 { }
19};
20MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
21
22static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
23{
24 if (accel_dev->hw_device) {
25 adf_clean_hw_data_420xx(hw_data: accel_dev->hw_device);
26 accel_dev->hw_device = NULL;
27 }
28 adf_dbgfs_exit(accel_dev);
29 adf_cfg_dev_remove(accel_dev);
30 adf_devmgr_rm_dev(accel_dev, NULL);
31}
32
33static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
34{
35 struct adf_accel_dev *accel_dev;
36 struct adf_accel_pci *accel_pci_dev;
37 struct adf_hw_device_data *hw_data;
38 unsigned int i, bar_nr;
39 unsigned long bar_mask;
40 struct adf_bar *bar;
41 int ret;
42
43 if (num_possible_nodes() > 1 && dev_to_node(dev: &pdev->dev) < 0) {
44 /*
45 * If the accelerator is connected to a node with no memory
46 * there is no point in using the accelerator since the remote
47 * memory transaction will be very slow.
48 */
49 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");
50 return -EINVAL;
51 }
52
53 accel_dev = devm_kzalloc(dev: &pdev->dev, size: sizeof(*accel_dev), GFP_KERNEL);
54 if (!accel_dev)
55 return -ENOMEM;
56
57 INIT_LIST_HEAD(list: &accel_dev->crypto_list);
58 accel_pci_dev = &accel_dev->accel_pci_dev;
59 accel_pci_dev->pci_dev = pdev;
60
61 /*
62 * Add accel device to accel table
63 * This should be called before adf_cleanup_accel is called
64 */
65 if (adf_devmgr_add_dev(accel_dev, NULL)) {
66 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
67 return -EFAULT;
68 }
69
70 accel_dev->owner = THIS_MODULE;
71 /* Allocate and initialise device hardware meta-data structure */
72 hw_data = devm_kzalloc(dev: &pdev->dev, size: sizeof(*hw_data), GFP_KERNEL);
73 if (!hw_data) {
74 ret = -ENOMEM;
75 goto out_err;
76 }
77
78 accel_dev->hw_device = hw_data;
79 adf_init_hw_data_420xx(hw_data: accel_dev->hw_device, dev_id: ent->device);
80
81 pci_read_config_byte(dev: pdev, PCI_REVISION_ID, val: &accel_pci_dev->revid);
82 pci_read_config_dword(dev: pdev, ADF_GEN4_FUSECTL4_OFFSET, val: &hw_data->fuses[ADF_FUSECTL4]);
83
84 /* Get Accelerators and Accelerators Engines masks */
85 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);
86 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);
87 accel_pci_dev->sku = hw_data->get_sku(hw_data);
88 /* If the device has no acceleration engines then ignore it */
89 if (!hw_data->accel_mask || !hw_data->ae_mask ||
90 (~hw_data->ae_mask & 0x01)) {
91 dev_err(&pdev->dev, "No acceleration units found.\n");
92 ret = -EFAULT;
93 goto out_err;
94 }
95
96 /* Create device configuration table */
97 ret = adf_cfg_dev_add(accel_dev);
98 if (ret)
99 goto out_err;
100
101 /* Enable PCI device */
102 ret = pcim_enable_device(pdev);
103 if (ret) {
104 dev_err(&pdev->dev, "Can't enable PCI device.\n");
105 goto out_err;
106 }
107
108 /* Set DMA identifier */
109 ret = dma_set_mask_and_coherent(dev: &pdev->dev, DMA_BIT_MASK(64));
110 if (ret) {
111 dev_err(&pdev->dev, "No usable DMA configuration.\n");
112 goto out_err;
113 }
114
115 ret = adf_gen4_cfg_dev_init(accel_dev);
116 if (ret) {
117 dev_err(&pdev->dev, "Failed to initialize configuration.\n");
118 goto out_err;
119 }
120
121 /* Get accelerator capabilities mask */
122 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);
123 if (!hw_data->accel_capabilities_mask) {
124 dev_err(&pdev->dev, "Failed to get capabilities mask.\n");
125 ret = -EINVAL;
126 goto out_err;
127 }
128
129 /* Find and map all the device's BARS */
130 bar_mask = pci_select_bars(dev: pdev, IORESOURCE_MEM) & ADF_GEN4_BAR_MASK;
131
132 ret = pcim_request_all_regions(pdev, name: pci_name(pdev));
133 if (ret) {
134 dev_err(&pdev->dev, "Failed to request PCI regions.\n");
135 goto out_err;
136 }
137
138 i = 0;
139 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {
140 bar = &accel_pci_dev->pci_bars[i++];
141 bar->virt_addr = pcim_iomap(pdev, bar: bar_nr, maxlen: 0);
142 if (!bar->virt_addr) {
143 dev_err(&pdev->dev, "Failed to ioremap PCI region.\n");
144 ret = -ENOMEM;
145 goto out_err;
146 }
147 }
148
149 pci_set_master(dev: pdev);
150
151 if (pci_save_state(dev: pdev)) {
152 dev_err(&pdev->dev, "Failed to save pci state.\n");
153 ret = -ENOMEM;
154 goto out_err;
155 }
156
157 accel_dev->ras_errors.enabled = true;
158 adf_dbgfs_init(accel_dev);
159
160 ret = adf_dev_up(accel_dev, init_config: true);
161 if (ret)
162 goto out_err_dev_stop;
163
164 ret = adf_sysfs_init(accel_dev);
165 if (ret)
166 goto out_err_dev_stop;
167
168 return ret;
169
170out_err_dev_stop:
171 adf_dev_down(accel_dev);
172out_err:
173 adf_cleanup_accel(accel_dev);
174 return ret;
175}
176
177static void adf_remove(struct pci_dev *pdev)
178{
179 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pci_dev: pdev);
180
181 if (!accel_dev) {
182 pr_err("QAT: Driver removal failed\n");
183 return;
184 }
185 adf_dev_down(accel_dev);
186 adf_cleanup_accel(accel_dev);
187}
188
189static void adf_shutdown(struct pci_dev *pdev)
190{
191 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pci_dev: pdev);
192
193 adf_dev_down(accel_dev);
194}
195
196static struct pci_driver adf_driver = {
197 .id_table = adf_pci_tbl,
198 .name = ADF_420XX_DEVICE_NAME,
199 .probe = adf_probe,
200 .remove = adf_remove,
201 .shutdown = adf_shutdown,
202 .sriov_configure = adf_sriov_configure,
203 .err_handler = &adf_err_handler,
204};
205
206module_pci_driver(adf_driver);
207
208MODULE_LICENSE("GPL");
209MODULE_AUTHOR("Intel");
210MODULE_FIRMWARE(ADF_420XX_FW);
211MODULE_FIRMWARE(ADF_420XX_MMP);
212MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
213MODULE_VERSION(ADF_DRV_VERSION);
214MODULE_SOFTDEP("pre: crypto-intel_qat");
215MODULE_IMPORT_NS("CRYPTO_QAT");
216

source code of linux/drivers/crypto/intel/qat/qat_420xx/adf_drv.c