1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <asm/cell-regs.h>
23  * Current implementation uses "cpu" nodes. We build our own mapping
24  * array of cpu numbers to cpu nodes locally for now to allow interrupt
26  * we implement cpu hotplug, we'll have to install an appropriate notifier
27  * in order to release references to the cpu going away
49 static cpumask_t cbe_local_mask[MAX_CBE] = { [0 ... MAX_CBE-1] = {CPU_BITS_NONE} };
65 	if (np->data)  in cbe_find_map()
66 		return np->data;  in cbe_find_map()
68 	/* walk up path until cpu or be node was found */  in cbe_find_map()
71 		tmp_np = tmp_np->parent;  in cbe_find_map()
74 	} while (!of_node_is_type(tmp_np, "cpu") ||  in cbe_find_map()
77 	np->data = cbe_find_map(tmp_np);  in cbe_find_map()
79 	return np->data;  in cbe_find_map()
84 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_pmd_regs()  local
85 	if (map == NULL)  in cbe_get_pmd_regs()
87 	return map->pmd_regs;  in cbe_get_pmd_regs()
91 struct cbe_pmd_regs __iomem *cbe_get_cpu_pmd_regs(int cpu)  in cbe_get_cpu_pmd_regs()  argument
93 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_pmd_regs()  local
94 	if (map == NULL)  in cbe_get_cpu_pmd_regs()
96 	return map->pmd_regs;  in cbe_get_cpu_pmd_regs()
102 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_pmd_shadow_regs()  local
103 	if (map == NULL)  in cbe_get_pmd_shadow_regs()
105 	return &map->pmd_shadow_regs;  in cbe_get_pmd_shadow_regs()
108 struct cbe_pmd_shadow_regs *cbe_get_cpu_pmd_shadow_regs(int cpu)  in cbe_get_cpu_pmd_shadow_regs()  argument
110 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_pmd_shadow_regs()  local
111 	if (map == NULL)  in cbe_get_cpu_pmd_shadow_regs()
113 	return &map->pmd_shadow_regs;  in cbe_get_cpu_pmd_shadow_regs()
118 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_iic_regs()  local
119 	if (map == NULL)  in cbe_get_iic_regs()
121 	return map->iic_regs;  in cbe_get_iic_regs()
124 struct cbe_iic_regs __iomem *cbe_get_cpu_iic_regs(int cpu)  in cbe_get_cpu_iic_regs()  argument
126 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_iic_regs()  local
127 	if (map == NULL)  in cbe_get_cpu_iic_regs()
129 	return map->iic_regs;  in cbe_get_cpu_iic_regs()
134 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_mic_tm_regs()  local
135 	if (map == NULL)  in cbe_get_mic_tm_regs()
137 	return map->mic_tm_regs;  in cbe_get_mic_tm_regs()
140 struct cbe_mic_tm_regs __iomem *cbe_get_cpu_mic_tm_regs(int cpu)  in cbe_get_cpu_mic_tm_regs()  argument
142 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_mic_tm_regs()  local
143 	if (map == NULL)  in cbe_get_cpu_mic_tm_regs()
145 	return map->mic_tm_regs;  in cbe_get_cpu_mic_tm_regs()
149 u32 cbe_get_hw_thread_id(int cpu)  in cbe_get_hw_thread_id()  argument
151 	return cbe_thread_map[cpu].thread_id;  in cbe_get_hw_thread_id()
155 u32 cbe_cpu_to_node(int cpu)  in cbe_cpu_to_node()  argument
157 	return cbe_thread_map[cpu].cbe_id;  in cbe_cpu_to_node()
200 static void __init cbe_fill_regs_map(struct cbe_regs_map *map)  in cbe_fill_regs_map()  argument
202 	if(map->be_node) {  in cbe_fill_regs_map()
205 		be = map->be_node;  in cbe_fill_regs_map()
210 				map->pmd_regs = of_iomap(np, 0);  in cbe_fill_regs_map()
214 		for_each_node_by_type(np, "CBEA-Internal-Interrupt-Controller") {  in cbe_fill_regs_map()
217 				map->iic_regs = of_iomap(np, 2);  in cbe_fill_regs_map()
221 		for_each_node_by_type(np, "mic-tm") {  in cbe_fill_regs_map()
224 				map->mic_tm_regs = of_iomap(np, 0);  in cbe_fill_regs_map()
228 		struct device_node *cpu;  in cbe_fill_regs_map()  local
235 		cpu = map->cpu_node;  in cbe_fill_regs_map()
237 		prop = of_get_property(cpu, "pervasive", NULL);  in cbe_fill_regs_map()
239 			map->pmd_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
241 		prop = of_get_property(cpu, "iic", NULL);  in cbe_fill_regs_map()
243 			map->iic_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
245 		prop = of_get_property(cpu, "mic-tm", NULL);  in cbe_fill_regs_map()
247 			map->mic_tm_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
256 	struct device_node *cpu;  in cbe_regs_init()  local
258 	/* Build local fast map of CPUs */  in cbe_regs_init()
265 	/* Find maps for each device tree CPU */  in cbe_regs_init()
266 	for_each_node_by_type(cpu, "cpu") {  in cbe_regs_init()
267 		struct cbe_regs_map *map;  in cbe_regs_init()  local
271 		map = &cbe_regs_maps[cbe_id];  in cbe_regs_init()
276 			cbe_regs_map_count--;  in cbe_regs_init()
277 			of_node_put(cpu);  in cbe_regs_init()
280 		of_node_put(map->cpu_node);  in cbe_regs_init()
281 		map->cpu_node = of_node_get(cpu);  in cbe_regs_init()
286 			if (thread->cpu_node == cpu) {  in cbe_regs_init()
287 				thread->regs = map;  in cbe_regs_init()
288 				thread->cbe_id = cbe_id;  in cbe_regs_init()
289 				map->be_node = thread->be_node;  in cbe_regs_init()
291 				if(thread->thread_id == 0)  in cbe_regs_init()
296 		cbe_fill_regs_map(map);  in cbe_regs_init()