1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright(c) 2007-2025 Intel Corporation */
3 #include "adf_c4xxx_hw_data.h"
4 #include <linux/kernel.h>
5 #include <linux/types.h>
6 #include <linux/fs.h>
7 #include <linux/errno.h>
8 #include <linux/device.h>
9 #include <linux/io.h>
10 #include <sys/sbuf.h>
11 #include <sys/sysctl.h>
12 #include <sys/priv.h>
13 #include <adf_accel_devices.h>
14 #include <adf_common_drv.h>
15 #include <adf_cfg.h>
16
17 /* String buffer size */
18 #define AE_INFO_BUFFER_SIZE 50
19
20 #define AE_CONFIG_DBG_FILE "ae_config"
21
22 static u8
find_first_me_index(const u32 au_mask)23 find_first_me_index(const u32 au_mask)
24 {
25 u8 i;
26 u32 mask = au_mask;
27
28 /* Retrieve the index of the first ME of an accel unit */
29 for (i = 0; i < ADF_C4XXX_MAX_ACCELENGINES; i++) {
30 if (mask & BIT(i))
31 return i;
32 }
33
34 return 0;
35 }
36
37 static u8
get_au_index(u8 au_mask)38 get_au_index(u8 au_mask)
39 {
40 u8 au_index = 0;
41
42 while (au_mask) {
43 if (au_mask == BIT(0))
44 return au_index;
45 au_index++;
46 au_mask = au_mask >> 1;
47 }
48
49 return 0;
50 }
51
adf_ae_config_show(SYSCTL_HANDLER_ARGS)52 static int adf_ae_config_show(SYSCTL_HANDLER_ARGS)
53 {
54 struct sbuf sb;
55 struct adf_accel_dev *accel_dev = arg1;
56 struct adf_hw_device_data *hw_data = accel_dev->hw_device;
57 struct adf_accel_unit *accel_unit = accel_dev->au_info->au;
58 u8 i, j;
59 u8 au_index;
60 u8 ae_index;
61 u8 num_aes;
62 int ret = 0;
63
64 if (priv_check(curthread, PRIV_DRIVER) != 0)
65 return EPERM;
66
67 u32 num_au = hw_data->get_num_accel_units(hw_data);
68
69 sbuf_new_for_sysctl(&sb, NULL, 2048, req);
70
71 sbuf_printf(&sb, "\n");
72 for (i = 0; i < num_au; i++) {
73 /* Retrieve accel unit index */
74 au_index = get_au_index(accel_unit[i].au_mask);
75
76 /* Retrieve index of fist ME in current accel unit */
77 ae_index = find_first_me_index(accel_unit[i].ae_mask);
78 num_aes = accel_unit[i].num_ae;
79
80 /* Retrieve accel unit type */
81 switch (accel_unit[i].services) {
82 case ADF_ACCEL_CRYPTO:
83 sbuf_printf(&sb,
84 "\tAccel unit %d - CRYPTO\n",
85 au_index);
86 /* Display ME assignment for a particular accel unit */
87 for (j = ae_index; j < (num_aes + ae_index); j++)
88 sbuf_printf(&sb, "\t\tAE[%d]: crypto\n", j);
89 break;
90 case ADF_ACCEL_COMPRESSION:
91 sbuf_printf(&sb,
92 "\tAccel unit %d - COMPRESSION\n",
93 au_index);
94 /* Display ME assignment for a particular accel unit */
95 for (j = ae_index; j < (num_aes + ae_index); j++)
96 sbuf_printf(&sb,
97 "\t\tAE[%d]: compression\n",
98 j);
99 break;
100 case ADF_ACCEL_SERVICE_NULL:
101 default:
102 break;
103 }
104 }
105
106 sbuf_finish(&sb);
107 ret = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
108 sbuf_delete(&sb);
109
110 return ret;
111 }
112
113 static int
c4xxx_add_debugfs_ae_config(struct adf_accel_dev * accel_dev)114 c4xxx_add_debugfs_ae_config(struct adf_accel_dev *accel_dev)
115 {
116 struct sysctl_ctx_list *qat_sysctl_ctx = NULL;
117 struct sysctl_oid *qat_sysctl_tree = NULL;
118 struct sysctl_oid *ae_conf_ctl = NULL;
119
120 qat_sysctl_ctx =
121 device_get_sysctl_ctx(accel_dev->accel_pci_dev.pci_dev);
122 qat_sysctl_tree =
123 device_get_sysctl_tree(accel_dev->accel_pci_dev.pci_dev);
124
125 ae_conf_ctl = SYSCTL_ADD_PROC(qat_sysctl_ctx,
126 SYSCTL_CHILDREN(qat_sysctl_tree),
127 OID_AUTO,
128 AE_CONFIG_DBG_FILE,
129 CTLTYPE_STRING | CTLFLAG_RD,
130 accel_dev,
131 0,
132 adf_ae_config_show,
133 "A",
134 "AE config");
135 accel_dev->debugfs_ae_config = ae_conf_ctl;
136 if (!accel_dev->debugfs_ae_config) {
137 device_printf(GET_DEV(accel_dev),
138 "Could not create debug ae config entry.\n");
139 return EFAULT;
140 }
141 return 0;
142 }
143
144 int
c4xxx_init_ae_config(struct adf_accel_dev * accel_dev)145 c4xxx_init_ae_config(struct adf_accel_dev *accel_dev)
146 {
147 int ret = 0;
148
149 /* Add a new file in debug file system with h/w version. */
150 ret = c4xxx_add_debugfs_ae_config(accel_dev);
151 if (ret) {
152 c4xxx_exit_ae_config(accel_dev);
153 device_printf(GET_DEV(accel_dev),
154 "Could not create debugfs ae config file\n");
155 return EINVAL;
156 }
157
158 return 0;
159 }
160
161 void
c4xxx_exit_ae_config(struct adf_accel_dev * accel_dev)162 c4xxx_exit_ae_config(struct adf_accel_dev *accel_dev)
163 {
164 if (!accel_dev->debugfs_ae_config)
165 return;
166
167 /* Delete ae configuration file */
168 remove_oid(accel_dev, accel_dev->debugfs_ae_config);
169
170 accel_dev->debugfs_ae_config = NULL;
171 }
172