1 /*
2   This file is provided under a dual BSD/GPLv2 license.  When using or
3   redistributing this file, you may do so under either license.
4 
5   GPL LICENSE SUMMARY
6   Copyright(c) 2014 Intel Corporation.
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of version 2 of the GNU General Public License as
9   published by the Free Software Foundation.
10 
11   This program is distributed in the hope that it will be useful, but
12   WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   General Public License for more details.
15 
16   Contact Information:
17   qat-linux@intel.com
18 
19   BSD LICENSE
20   Copyright(c) 2014 Intel Corporation.
21   Redistribution and use in source and binary forms, with or without
22   modification, are permitted provided that the following conditions
23   are met:
24 
25     * Redistributions of source code must retain the above copyright
26       notice, this list of conditions and the following disclaimer.
27     * Redistributions in binary form must reproduce the above copyright
28       notice, this list of conditions and the following disclaimer in
29       the documentation and/or other materials provided with the
30       distribution.
31     * Neither the name of Intel Corporation nor the names of its
32       contributors may be used to endorse or promote products derived
33       from this software without specific prior written permission.
34 
35   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 */
47 #include <linux/firmware.h>
48 #include <linux/pci.h>
49 #include "adf_cfg.h"
50 #include "adf_accel_devices.h"
51 #include "adf_common_drv.h"
52 #include "icp_qat_uclo.h"
53 
adf_ae_fw_load(struct adf_accel_dev * accel_dev)54 int adf_ae_fw_load(struct adf_accel_dev *accel_dev)
55 {
56 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
57 	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
58 	void *uof_addr;
59 	uint32_t uof_size;
60 
61 	if (request_firmware(&loader_data->uof_fw, hw_device->fw_name,
62 			     &accel_dev->accel_pci_dev.pci_dev->dev)) {
63 		dev_err(&GET_DEV(accel_dev), "Failed to load firmware %s\n",
64 			hw_device->fw_name);
65 		return -EFAULT;
66 	}
67 
68 	uof_size = loader_data->uof_fw->size;
69 	uof_addr = (void *)loader_data->uof_fw->data;
70 	if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) {
71 		dev_err(&GET_DEV(accel_dev), "Failed to map UOF\n");
72 		goto out_err;
73 	}
74 	if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
75 		dev_err(&GET_DEV(accel_dev), "Failed to map UOF\n");
76 		goto out_err;
77 	}
78 	return 0;
79 
80 out_err:
81 	adf_ae_fw_release(accel_dev);
82 	return -EFAULT;
83 }
84 
adf_ae_fw_release(struct adf_accel_dev * accel_dev)85 void adf_ae_fw_release(struct adf_accel_dev *accel_dev)
86 {
87 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
88 
89 	qat_uclo_del_uof_obj(loader_data->fw_loader);
90 	qat_hal_deinit(loader_data->fw_loader);
91 
92 	if (loader_data->uof_fw)
93 		release_firmware(loader_data->uof_fw);
94 
95 	loader_data->uof_fw = NULL;
96 	loader_data->fw_loader = NULL;
97 }
98 
adf_ae_start(struct adf_accel_dev * accel_dev)99 int adf_ae_start(struct adf_accel_dev *accel_dev)
100 {
101 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
102 	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
103 	uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
104 
105 	for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
106 		if (hw_data->ae_mask & (1 << ae)) {
107 			qat_hal_start(loader_data->fw_loader, ae, 0xFF);
108 			ae_ctr++;
109 		}
110 	}
111 	dev_info(&GET_DEV(accel_dev),
112 		 "qat_dev%d started %d acceleration engines\n",
113 		 accel_dev->accel_id, ae_ctr);
114 	return 0;
115 }
116 
adf_ae_stop(struct adf_accel_dev * accel_dev)117 int adf_ae_stop(struct adf_accel_dev *accel_dev)
118 {
119 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
120 	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
121 	uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
122 
123 	for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
124 		if (hw_data->ae_mask & (1 << ae)) {
125 			qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
126 			ae_ctr++;
127 		}
128 	}
129 	dev_info(&GET_DEV(accel_dev),
130 		 "qat_dev%d stopped %d acceleration engines\n",
131 		 accel_dev->accel_id, ae_ctr);
132 	return 0;
133 }
134 
adf_ae_reset(struct adf_accel_dev * accel_dev,int ae)135 static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
136 {
137 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
138 
139 	qat_hal_reset(loader_data->fw_loader);
140 	if (qat_hal_clr_reset(loader_data->fw_loader))
141 		return -EFAULT;
142 
143 	return 0;
144 }
145 
adf_ae_init(struct adf_accel_dev * accel_dev)146 int adf_ae_init(struct adf_accel_dev *accel_dev)
147 {
148 	struct adf_fw_loader_data *loader_data;
149 
150 	loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
151 	if (!loader_data)
152 		return -ENOMEM;
153 
154 	accel_dev->fw_loader = loader_data;
155 	if (qat_hal_init(accel_dev)) {
156 		dev_err(&GET_DEV(accel_dev), "Failed to init the AEs\n");
157 		kfree(loader_data);
158 		return -EFAULT;
159 	}
160 	if (adf_ae_reset(accel_dev, 0)) {
161 		dev_err(&GET_DEV(accel_dev), "Failed to reset the AEs\n");
162 		qat_hal_deinit(loader_data->fw_loader);
163 		kfree(loader_data);
164 		return -EFAULT;
165 	}
166 	return 0;
167 }
168 
adf_ae_shutdown(struct adf_accel_dev * accel_dev)169 int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
170 {
171 	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
172 
173 	qat_hal_deinit(loader_data->fw_loader);
174 	kfree(accel_dev->fw_loader);
175 	accel_dev->fw_loader = NULL;
176 	return 0;
177 }
178