]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
e28d2af4 IT |
2 | /* |
3 | * Copyright IBM Corp. 2016 | |
4 | * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> | |
5 | * | |
6 | * Adjunct processor bus, card related code. | |
7 | */ | |
8 | ||
9 | #define KMSG_COMPONENT "ap" | |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/slab.h> | |
14 | #include <asm/facility.h> | |
15 | ||
16 | #include "ap_bus.h" | |
17 | #include "ap_asm.h" | |
18 | ||
19 | /* | |
20 | * AP card related attributes. | |
21 | */ | |
22 | static ssize_t ap_hwtype_show(struct device *dev, | |
23 | struct device_attribute *attr, char *buf) | |
24 | { | |
25 | struct ap_card *ac = to_ap_card(dev); | |
26 | ||
27 | return snprintf(buf, PAGE_SIZE, "%d\n", ac->ap_dev.device_type); | |
28 | } | |
29 | ||
30 | static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL); | |
31 | ||
32 | static ssize_t ap_raw_hwtype_show(struct device *dev, | |
33 | struct device_attribute *attr, char *buf) | |
34 | { | |
35 | struct ap_card *ac = to_ap_card(dev); | |
36 | ||
37 | return snprintf(buf, PAGE_SIZE, "%d\n", ac->raw_hwtype); | |
38 | } | |
39 | ||
40 | static DEVICE_ATTR(raw_hwtype, 0444, ap_raw_hwtype_show, NULL); | |
41 | ||
42 | static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr, | |
43 | char *buf) | |
44 | { | |
45 | struct ap_card *ac = to_ap_card(dev); | |
46 | ||
47 | return snprintf(buf, PAGE_SIZE, "%d\n", ac->queue_depth); | |
48 | } | |
49 | ||
50 | static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL); | |
51 | ||
52 | static ssize_t ap_functions_show(struct device *dev, | |
53 | struct device_attribute *attr, char *buf) | |
54 | { | |
55 | struct ap_card *ac = to_ap_card(dev); | |
56 | ||
57 | return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions); | |
58 | } | |
59 | ||
60 | static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL); | |
61 | ||
d0360d7b HF |
62 | static ssize_t ap_req_count_show(struct device *dev, |
63 | struct device_attribute *attr, | |
64 | char *buf) | |
e28d2af4 IT |
65 | { |
66 | struct ap_card *ac = to_ap_card(dev); | |
e28d2af4 IT |
67 | unsigned int req_cnt; |
68 | ||
69 | req_cnt = 0; | |
70 | spin_lock_bh(&ap_list_lock); | |
e47de21d | 71 | req_cnt = atomic_read(&ac->total_request_count); |
e28d2af4 IT |
72 | spin_unlock_bh(&ap_list_lock); |
73 | return snprintf(buf, PAGE_SIZE, "%d\n", req_cnt); | |
74 | } | |
75 | ||
d0360d7b HF |
76 | static ssize_t ap_req_count_store(struct device *dev, |
77 | struct device_attribute *attr, | |
78 | const char *buf, size_t count) | |
79 | { | |
80 | struct ap_card *ac = to_ap_card(dev); | |
81 | struct ap_queue *aq; | |
82 | ||
83 | spin_lock_bh(&ap_list_lock); | |
84 | for_each_ap_queue(aq, ac) | |
85 | aq->total_request_count = 0; | |
86 | spin_unlock_bh(&ap_list_lock); | |
87 | atomic_set(&ac->total_request_count, 0); | |
88 | ||
89 | return count; | |
90 | } | |
91 | ||
92 | static DEVICE_ATTR(request_count, 0644, ap_req_count_show, ap_req_count_store); | |
e28d2af4 IT |
93 | |
94 | static ssize_t ap_requestq_count_show(struct device *dev, | |
95 | struct device_attribute *attr, char *buf) | |
96 | { | |
97 | struct ap_card *ac = to_ap_card(dev); | |
98 | struct ap_queue *aq; | |
99 | unsigned int reqq_cnt; | |
100 | ||
101 | reqq_cnt = 0; | |
102 | spin_lock_bh(&ap_list_lock); | |
103 | for_each_ap_queue(aq, ac) | |
104 | reqq_cnt += aq->requestq_count; | |
105 | spin_unlock_bh(&ap_list_lock); | |
106 | return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); | |
107 | } | |
108 | ||
109 | static DEVICE_ATTR(requestq_count, 0444, ap_requestq_count_show, NULL); | |
110 | ||
111 | static ssize_t ap_pendingq_count_show(struct device *dev, | |
112 | struct device_attribute *attr, char *buf) | |
113 | { | |
114 | struct ap_card *ac = to_ap_card(dev); | |
115 | struct ap_queue *aq; | |
116 | unsigned int penq_cnt; | |
117 | ||
118 | penq_cnt = 0; | |
119 | spin_lock_bh(&ap_list_lock); | |
120 | for_each_ap_queue(aq, ac) | |
121 | penq_cnt += aq->pendingq_count; | |
122 | spin_unlock_bh(&ap_list_lock); | |
123 | return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); | |
124 | } | |
125 | ||
126 | static DEVICE_ATTR(pendingq_count, 0444, ap_pendingq_count_show, NULL); | |
127 | ||
128 | static ssize_t ap_modalias_show(struct device *dev, | |
129 | struct device_attribute *attr, char *buf) | |
130 | { | |
131 | return sprintf(buf, "ap:t%02X\n", to_ap_dev(dev)->device_type); | |
132 | } | |
133 | ||
134 | static DEVICE_ATTR(modalias, 0444, ap_modalias_show, NULL); | |
135 | ||
136 | static struct attribute *ap_card_dev_attrs[] = { | |
137 | &dev_attr_hwtype.attr, | |
138 | &dev_attr_raw_hwtype.attr, | |
139 | &dev_attr_depth.attr, | |
140 | &dev_attr_ap_functions.attr, | |
141 | &dev_attr_request_count.attr, | |
142 | &dev_attr_requestq_count.attr, | |
143 | &dev_attr_pendingq_count.attr, | |
144 | &dev_attr_modalias.attr, | |
145 | NULL | |
146 | }; | |
147 | ||
148 | static struct attribute_group ap_card_dev_attr_group = { | |
149 | .attrs = ap_card_dev_attrs | |
150 | }; | |
151 | ||
152 | static const struct attribute_group *ap_card_dev_attr_groups[] = { | |
153 | &ap_card_dev_attr_group, | |
154 | NULL | |
155 | }; | |
156 | ||
227374b1 | 157 | static struct device_type ap_card_type = { |
e28d2af4 IT |
158 | .name = "ap_card", |
159 | .groups = ap_card_dev_attr_groups, | |
160 | }; | |
161 | ||
162 | static void ap_card_device_release(struct device *dev) | |
163 | { | |
e3850508 HF |
164 | struct ap_card *ac = to_ap_card(dev); |
165 | ||
166 | if (!list_empty(&ac->list)) { | |
167 | spin_lock_bh(&ap_list_lock); | |
168 | list_del_init(&ac->list); | |
169 | spin_unlock_bh(&ap_list_lock); | |
170 | } | |
171 | kfree(ac); | |
e28d2af4 IT |
172 | } |
173 | ||
174 | struct ap_card *ap_card_create(int id, int queue_depth, int device_type, | |
175 | unsigned int functions) | |
176 | { | |
177 | struct ap_card *ac; | |
178 | ||
179 | ac = kzalloc(sizeof(*ac), GFP_KERNEL); | |
180 | if (!ac) | |
181 | return NULL; | |
182 | INIT_LIST_HEAD(&ac->queues); | |
183 | ac->ap_dev.device.release = ap_card_device_release; | |
184 | ac->ap_dev.device.type = &ap_card_type; | |
185 | ac->ap_dev.device_type = device_type; | |
186 | /* CEX6 toleration: map to CEX5 */ | |
187 | if (device_type == AP_DEVICE_TYPE_CEX6) | |
188 | ac->ap_dev.device_type = AP_DEVICE_TYPE_CEX5; | |
189 | ac->raw_hwtype = device_type; | |
190 | ac->queue_depth = queue_depth; | |
191 | ac->functions = functions; | |
192 | ac->id = id; | |
193 | return ac; | |
194 | } |