1 // SPDX-License-Identifier: GPL-2.0-only
19 #include <asm/cell-regs.h>
22  * Current implementation uses "cpu" nodes. We build our own mapping
23  * array of cpu numbers to cpu nodes locally for now to allow interrupt
25  * we implement cpu hotplug, we'll have to install an appropriate notifier
26  * in order to release references to the cpu going away
48 static cpumask_t cbe_local_mask[MAX_CBE] = { [0 ... MAX_CBE-1] = {CPU_BITS_NONE} };
64 	if (np->data)  in cbe_find_map()
65 		return np->data;  in cbe_find_map()
67 	/* walk up path until cpu or be node was found */  in cbe_find_map()
70 		tmp_np = tmp_np->parent;  in cbe_find_map()
73 	} while (!of_node_is_type(tmp_np, "cpu") ||  in cbe_find_map()
76 	np->data = cbe_find_map(tmp_np);  in cbe_find_map()
78 	return np->data;  in cbe_find_map()
83 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_pmd_regs()  local
84 	if (map == NULL)  in cbe_get_pmd_regs()
86 	return map->pmd_regs;  in cbe_get_pmd_regs()
90 struct cbe_pmd_regs __iomem *cbe_get_cpu_pmd_regs(int cpu)  in cbe_get_cpu_pmd_regs()  argument
92 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_pmd_regs()  local
93 	if (map == NULL)  in cbe_get_cpu_pmd_regs()
95 	return map->pmd_regs;  in cbe_get_cpu_pmd_regs()
101 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_pmd_shadow_regs()  local
102 	if (map == NULL)  in cbe_get_pmd_shadow_regs()
104 	return &map->pmd_shadow_regs;  in cbe_get_pmd_shadow_regs()
107 struct cbe_pmd_shadow_regs *cbe_get_cpu_pmd_shadow_regs(int cpu)  in cbe_get_cpu_pmd_shadow_regs()  argument
109 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_pmd_shadow_regs()  local
110 	if (map == NULL)  in cbe_get_cpu_pmd_shadow_regs()
112 	return &map->pmd_shadow_regs;  in cbe_get_cpu_pmd_shadow_regs()
117 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_iic_regs()  local
118 	if (map == NULL)  in cbe_get_iic_regs()
120 	return map->iic_regs;  in cbe_get_iic_regs()
123 struct cbe_iic_regs __iomem *cbe_get_cpu_iic_regs(int cpu)  in cbe_get_cpu_iic_regs()  argument
125 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_iic_regs()  local
126 	if (map == NULL)  in cbe_get_cpu_iic_regs()
128 	return map->iic_regs;  in cbe_get_cpu_iic_regs()
133 	struct cbe_regs_map *map = cbe_find_map(np);  in cbe_get_mic_tm_regs()  local
134 	if (map == NULL)  in cbe_get_mic_tm_regs()
136 	return map->mic_tm_regs;  in cbe_get_mic_tm_regs()
139 struct cbe_mic_tm_regs __iomem *cbe_get_cpu_mic_tm_regs(int cpu)  in cbe_get_cpu_mic_tm_regs()  argument
141 	struct cbe_regs_map *map = cbe_thread_map[cpu].regs;  in cbe_get_cpu_mic_tm_regs()  local
142 	if (map == NULL)  in cbe_get_cpu_mic_tm_regs()
144 	return map->mic_tm_regs;  in cbe_get_cpu_mic_tm_regs()
148 u32 cbe_get_hw_thread_id(int cpu)  in cbe_get_hw_thread_id()  argument
150 	return cbe_thread_map[cpu].thread_id;  in cbe_get_hw_thread_id()
154 u32 cbe_cpu_to_node(int cpu)  in cbe_cpu_to_node()  argument
156 	return cbe_thread_map[cpu].cbe_id;  in cbe_cpu_to_node()
199 static void __init cbe_fill_regs_map(struct cbe_regs_map *map)  in cbe_fill_regs_map()  argument
201 	if(map->be_node) {  in cbe_fill_regs_map()
204 		be = map->be_node;  in cbe_fill_regs_map()
209 				map->pmd_regs = of_iomap(np, 0);  in cbe_fill_regs_map()
213 		for_each_node_by_type(np, "CBEA-Internal-Interrupt-Controller") {  in cbe_fill_regs_map()
216 				map->iic_regs = of_iomap(np, 2);  in cbe_fill_regs_map()
220 		for_each_node_by_type(np, "mic-tm") {  in cbe_fill_regs_map()
223 				map->mic_tm_regs = of_iomap(np, 0);  in cbe_fill_regs_map()
227 		struct device_node *cpu;  in cbe_fill_regs_map()  local
234 		cpu = map->cpu_node;  in cbe_fill_regs_map()
236 		prop = of_get_property(cpu, "pervasive", NULL);  in cbe_fill_regs_map()
238 			map->pmd_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
240 		prop = of_get_property(cpu, "iic", NULL);  in cbe_fill_regs_map()
242 			map->iic_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
244 		prop = of_get_property(cpu, "mic-tm", NULL);  in cbe_fill_regs_map()
246 			map->mic_tm_regs = ioremap(prop->address, prop->len);  in cbe_fill_regs_map()
255 	struct device_node *cpu;  in cbe_regs_init()  local
257 	/* Build local fast map of CPUs */  in cbe_regs_init()
264 	/* Find maps for each device tree CPU */  in cbe_regs_init()
265 	for_each_node_by_type(cpu, "cpu") {  in cbe_regs_init()
266 		struct cbe_regs_map *map;  in cbe_regs_init()  local
270 		map = &cbe_regs_maps[cbe_id];  in cbe_regs_init()
275 			cbe_regs_map_count--;  in cbe_regs_init()
276 			of_node_put(cpu);  in cbe_regs_init()
279 		of_node_put(map->cpu_node);  in cbe_regs_init()
280 		map->cpu_node = of_node_get(cpu);  in cbe_regs_init()
285 			if (thread->cpu_node == cpu) {  in cbe_regs_init()
286 				thread->regs = map;  in cbe_regs_init()
287 				thread->cbe_id = cbe_id;  in cbe_regs_init()
288 				map->be_node = thread->be_node;  in cbe_regs_init()
290 				if(thread->thread_id == 0)  in cbe_regs_init()
295 		cbe_fill_regs_map(map);  in cbe_regs_init()