1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright(c) 2007-2022 Intel Corporation */
3 /* $FreeBSD$ */
4 #include "adf_c4xxx_hw_data.h"
5 #include <linux/kernel.h>
6 #include <linux/types.h>
7 #include <linux/fs.h>
8 #include <linux/errno.h>
9 #include <linux/device.h>
10 #include <linux/io.h>
11 #include <sys/sbuf.h>
12 #include <sys/sysctl.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
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
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 
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 	u32 num_au = hw_data->get_num_accel_units(hw_data);
64 
65 	sbuf_new_for_sysctl(&sb, NULL, 2048, req);
66 
67 	sbuf_printf(&sb, "\n");
68 	for (i = 0; i < num_au; i++) {
69 		/* Retrieve accel unit index */
70 		au_index = get_au_index(accel_unit[i].au_mask);
71 
72 		/* Retrieve index of fist ME in current accel unit */
73 		ae_index = find_first_me_index(accel_unit[i].ae_mask);
74 		num_aes = accel_unit[i].num_ae;
75 
76 		/* Retrieve accel unit type */
77 		switch (accel_unit[i].services) {
78 		case ADF_ACCEL_CRYPTO:
79 			sbuf_printf(&sb,
80 				    "\tAccel unit %d - CRYPTO\n",
81 				    au_index);
82 			/* Display ME assignment for a particular accel unit */
83 			for (j = ae_index; j < (num_aes + ae_index); j++)
84 				sbuf_printf(&sb, "\t\tAE[%d]: crypto\n", j);
85 			break;
86 		case ADF_ACCEL_COMPRESSION:
87 			sbuf_printf(&sb,
88 				    "\tAccel unit %d - COMPRESSION\n",
89 				    au_index);
90 			/* Display ME assignment for a particular accel unit */
91 			for (j = ae_index; j < (num_aes + ae_index); j++)
92 				sbuf_printf(&sb,
93 					    "\t\tAE[%d]: compression\n",
94 					    j);
95 			break;
96 		case ADF_ACCEL_SERVICE_NULL:
97 		default:
98 			break;
99 		}
100 	}
101 
102 	sbuf_finish(&sb);
103 	ret = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
104 	sbuf_delete(&sb);
105 
106 	return ret;
107 }
108 
109 static int
110 c4xxx_add_debugfs_ae_config(struct adf_accel_dev *accel_dev)
111 {
112 	struct sysctl_ctx_list *qat_sysctl_ctx = NULL;
113 	struct sysctl_oid *qat_sysctl_tree = NULL;
114 	struct sysctl_oid *ae_conf_ctl = NULL;
115 
116 	qat_sysctl_ctx =
117 	    device_get_sysctl_ctx(accel_dev->accel_pci_dev.pci_dev);
118 	qat_sysctl_tree =
119 	    device_get_sysctl_tree(accel_dev->accel_pci_dev.pci_dev);
120 
121 	ae_conf_ctl = SYSCTL_ADD_PROC(qat_sysctl_ctx,
122 				      SYSCTL_CHILDREN(qat_sysctl_tree),
123 				      OID_AUTO,
124 				      AE_CONFIG_DBG_FILE,
125 				      CTLTYPE_STRING | CTLFLAG_RD,
126 				      accel_dev,
127 				      0,
128 				      adf_ae_config_show,
129 				      "A",
130 				      "AE config");
131 	accel_dev->debugfs_ae_config = ae_conf_ctl;
132 	if (!accel_dev->debugfs_ae_config) {
133 		device_printf(GET_DEV(accel_dev),
134 			      "Could not create debug ae config entry.\n");
135 		return EFAULT;
136 	}
137 	return 0;
138 }
139 
140 int
141 c4xxx_init_ae_config(struct adf_accel_dev *accel_dev)
142 {
143 	int ret = 0;
144 
145 	/* Add a new file in debug file system with h/w version. */
146 	ret = c4xxx_add_debugfs_ae_config(accel_dev);
147 	if (ret) {
148 		c4xxx_exit_ae_config(accel_dev);
149 		device_printf(GET_DEV(accel_dev),
150 			      "Could not create debugfs ae config file\n");
151 		return EINVAL;
152 	}
153 
154 	return 0;
155 }
156 
157 void
158 c4xxx_exit_ae_config(struct adf_accel_dev *accel_dev)
159 {
160 	if (!accel_dev->debugfs_ae_config)
161 		return;
162 
163 	/* Delete ae configuration file */
164 	remove_oid(accel_dev, accel_dev->debugfs_ae_config);
165 
166 	accel_dev->debugfs_ae_config = NULL;
167 }
168