This source file includes following definitions.
- init_pcfg
- bman_offline_cpu
- bman_online_cpu
- bman_portals_probed
- bman_portal_probe
- bman_portal_driver_register
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31 #include "bman_priv.h"
32
33 static struct bman_portal *affine_bportals[NR_CPUS];
34 static struct cpumask portal_cpus;
35 static int __bman_portals_probed;
36
37 static DEFINE_SPINLOCK(bman_lock);
38
39 static struct bman_portal *init_pcfg(struct bm_portal_config *pcfg)
40 {
41 struct bman_portal *p = bman_create_affine_portal(pcfg);
42
43 if (!p) {
44 dev_crit(pcfg->dev, "%s: Portal failure on cpu %d\n",
45 __func__, pcfg->cpu);
46 return NULL;
47 }
48
49 bman_p_irqsource_add(p, BM_PIRQ_RCRI);
50 affine_bportals[pcfg->cpu] = p;
51
52 dev_info(pcfg->dev, "Portal initialised, cpu %d\n", pcfg->cpu);
53
54 return p;
55 }
56
57 static int bman_offline_cpu(unsigned int cpu)
58 {
59 struct bman_portal *p = affine_bportals[cpu];
60 const struct bm_portal_config *pcfg;
61
62 if (!p)
63 return 0;
64
65 pcfg = bman_get_bm_portal_config(p);
66 if (!pcfg)
67 return 0;
68
69
70 cpu = cpumask_any_but(cpu_online_mask, cpu);
71 irq_set_affinity(pcfg->irq, cpumask_of(cpu));
72 return 0;
73 }
74
75 static int bman_online_cpu(unsigned int cpu)
76 {
77 struct bman_portal *p = affine_bportals[cpu];
78 const struct bm_portal_config *pcfg;
79
80 if (!p)
81 return 0;
82
83 pcfg = bman_get_bm_portal_config(p);
84 if (!pcfg)
85 return 0;
86
87 irq_set_affinity(pcfg->irq, cpumask_of(cpu));
88 return 0;
89 }
90
91 int bman_portals_probed(void)
92 {
93 return __bman_portals_probed;
94 }
95 EXPORT_SYMBOL_GPL(bman_portals_probed);
96
97 static int bman_portal_probe(struct platform_device *pdev)
98 {
99 struct device *dev = &pdev->dev;
100 struct device_node *node = dev->of_node;
101 struct bm_portal_config *pcfg;
102 struct resource *addr_phys[2];
103 int irq, cpu, err, i;
104
105 err = bman_is_probed();
106 if (!err)
107 return -EPROBE_DEFER;
108 if (err < 0) {
109 dev_err(&pdev->dev, "failing probe due to bman probe error\n");
110 return -ENODEV;
111 }
112
113 pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL);
114 if (!pcfg) {
115 __bman_portals_probed = -1;
116 return -ENOMEM;
117 }
118
119 pcfg->dev = dev;
120
121 addr_phys[0] = platform_get_resource(pdev, IORESOURCE_MEM,
122 DPAA_PORTAL_CE);
123 if (!addr_phys[0]) {
124 dev_err(dev, "Can't get %pOF property 'reg::CE'\n", node);
125 goto err_ioremap1;
126 }
127
128 addr_phys[1] = platform_get_resource(pdev, IORESOURCE_MEM,
129 DPAA_PORTAL_CI);
130 if (!addr_phys[1]) {
131 dev_err(dev, "Can't get %pOF property 'reg::CI'\n", node);
132 goto err_ioremap1;
133 }
134
135 pcfg->cpu = -1;
136
137 irq = platform_get_irq(pdev, 0);
138 if (irq <= 0)
139 goto err_ioremap1;
140 pcfg->irq = irq;
141
142 pcfg->addr_virt_ce = memremap(addr_phys[0]->start,
143 resource_size(addr_phys[0]),
144 QBMAN_MEMREMAP_ATTR);
145 if (!pcfg->addr_virt_ce) {
146 dev_err(dev, "memremap::CE failed\n");
147 goto err_ioremap1;
148 }
149
150 pcfg->addr_virt_ci = ioremap(addr_phys[1]->start,
151 resource_size(addr_phys[1]));
152 if (!pcfg->addr_virt_ci) {
153 dev_err(dev, "ioremap::CI failed\n");
154 goto err_ioremap2;
155 }
156
157 spin_lock(&bman_lock);
158 cpu = cpumask_next_zero(-1, &portal_cpus);
159 if (cpu >= nr_cpu_ids) {
160 __bman_portals_probed = 1;
161
162 spin_unlock(&bman_lock);
163 return 0;
164 }
165
166 cpumask_set_cpu(cpu, &portal_cpus);
167 spin_unlock(&bman_lock);
168 pcfg->cpu = cpu;
169
170 if (!init_pcfg(pcfg)) {
171 dev_err(dev, "portal init failed\n");
172 goto err_portal_init;
173 }
174
175
176 if (!cpu_online(cpu))
177 bman_offline_cpu(cpu);
178
179 if (__bman_portals_probed == 1 && bman_requires_cleanup()) {
180
181
182
183
184 for (i = 0; i < BM_POOL_MAX; i++) {
185 err = bm_shutdown_pool(i);
186 if (err) {
187 dev_err(dev, "Failed to shutdown bpool %d\n",
188 i);
189 goto err_portal_init;
190 }
191 }
192 bman_done_cleanup();
193 }
194
195 return 0;
196
197 err_portal_init:
198 iounmap(pcfg->addr_virt_ci);
199 err_ioremap2:
200 memunmap(pcfg->addr_virt_ce);
201 err_ioremap1:
202 __bman_portals_probed = -1;
203
204 return -ENXIO;
205 }
206
207 static const struct of_device_id bman_portal_ids[] = {
208 {
209 .compatible = "fsl,bman-portal",
210 },
211 {}
212 };
213 MODULE_DEVICE_TABLE(of, bman_portal_ids);
214
215 static struct platform_driver bman_portal_driver = {
216 .driver = {
217 .name = KBUILD_MODNAME,
218 .of_match_table = bman_portal_ids,
219 },
220 .probe = bman_portal_probe,
221 };
222
223 static int __init bman_portal_driver_register(struct platform_driver *drv)
224 {
225 int ret;
226
227 ret = platform_driver_register(drv);
228 if (ret < 0)
229 return ret;
230
231 ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
232 "soc/qbman_portal:online",
233 bman_online_cpu, bman_offline_cpu);
234 if (ret < 0) {
235 pr_err("bman: failed to register hotplug callbacks.\n");
236 platform_driver_unregister(drv);
237 return ret;
238 }
239 return 0;
240 }
241
242 module_driver(bman_portal_driver,
243 bman_portal_driver_register, platform_driver_unregister);