1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * spu hypervisor abstraction for direct hardware access.
4  *
5  *  (C) Copyright IBM Deutschland Entwicklung GmbH 2005
6  *  Copyright 2006 Sony Corp.
7  */
8 
9 #include <linux/interrupt.h>
10 #include <linux/list.h>
11 #include <linux/ptrace.h>
12 #include <linux/wait.h>
13 #include <linux/mm.h>
14 #include <linux/io.h>
15 #include <linux/mutex.h>
16 #include <linux/device.h>
17 #include <linux/sched.h>
18 
19 #include <asm/spu.h>
20 #include <asm/spu_priv1.h>
21 #include <asm/firmware.h>
22 
23 #include "interrupt.h"
24 #include "spu_priv1_mmio.h"
25 
26 static void int_mask_and(struct spu *spu, int class, u64 mask)
27 {
28 	u64 old_mask;
29 
30 	old_mask = in_be64(&spu->priv1->int_mask_RW[class]);
31 	out_be64(&spu->priv1->int_mask_RW[class], old_mask & mask);
32 }
33 
34 static void int_mask_or(struct spu *spu, int class, u64 mask)
35 {
36 	u64 old_mask;
37 
38 	old_mask = in_be64(&spu->priv1->int_mask_RW[class]);
39 	out_be64(&spu->priv1->int_mask_RW[class], old_mask | mask);
40 }
41 
42 static void int_mask_set(struct spu *spu, int class, u64 mask)
43 {
44 	out_be64(&spu->priv1->int_mask_RW[class], mask);
45 }
46 
47 static u64 int_mask_get(struct spu *spu, int class)
48 {
49 	return in_be64(&spu->priv1->int_mask_RW[class]);
50 }
51 
52 static void int_stat_clear(struct spu *spu, int class, u64 stat)
53 {
54 	out_be64(&spu->priv1->int_stat_RW[class], stat);
55 }
56 
57 static u64 int_stat_get(struct spu *spu, int class)
58 {
59 	return in_be64(&spu->priv1->int_stat_RW[class]);
60 }
61 
62 static void cpu_affinity_set(struct spu *spu, int cpu)
63 {
64 	u64 target;
65 	u64 route;
66 
67 	if (nr_cpus_node(spu->node)) {
68 		const struct cpumask *spumask = cpumask_of_node(spu->node),
69 			*cpumask = cpumask_of_node(cpu_to_node(cpu));
70 
71 		if (!cpumask_intersects(spumask, cpumask))
72 			return;
73 	}
74 
75 	target = iic_get_target_id(cpu);
76 	route = target << 48 | target << 32 | target << 16;
77 	out_be64(&spu->priv1->int_route_RW, route);
78 }
79 
80 static u64 mfc_dar_get(struct spu *spu)
81 {
82 	return in_be64(&spu->priv1->mfc_dar_RW);
83 }
84 
85 static u64 mfc_dsisr_get(struct spu *spu)
86 {
87 	return in_be64(&spu->priv1->mfc_dsisr_RW);
88 }
89 
90 static void mfc_dsisr_set(struct spu *spu, u64 dsisr)
91 {
92 	out_be64(&spu->priv1->mfc_dsisr_RW, dsisr);
93 }
94 
95 static void mfc_sdr_setup(struct spu *spu)
96 {
97 	out_be64(&spu->priv1->mfc_sdr_RW, mfspr(SPRN_SDR1));
98 }
99 
100 static void mfc_sr1_set(struct spu *spu, u64 sr1)
101 {
102 	out_be64(&spu->priv1->mfc_sr1_RW, sr1);
103 }
104 
105 static u64 mfc_sr1_get(struct spu *spu)
106 {
107 	return in_be64(&spu->priv1->mfc_sr1_RW);
108 }
109 
110 static void mfc_tclass_id_set(struct spu *spu, u64 tclass_id)
111 {
112 	out_be64(&spu->priv1->mfc_tclass_id_RW, tclass_id);
113 }
114 
115 static u64 mfc_tclass_id_get(struct spu *spu)
116 {
117 	return in_be64(&spu->priv1->mfc_tclass_id_RW);
118 }
119 
120 static void tlb_invalidate(struct spu *spu)
121 {
122 	out_be64(&spu->priv1->tlb_invalidate_entry_W, 0ul);
123 }
124 
125 static void resource_allocation_groupID_set(struct spu *spu, u64 id)
126 {
127 	out_be64(&spu->priv1->resource_allocation_groupID_RW, id);
128 }
129 
130 static u64 resource_allocation_groupID_get(struct spu *spu)
131 {
132 	return in_be64(&spu->priv1->resource_allocation_groupID_RW);
133 }
134 
135 static void resource_allocation_enable_set(struct spu *spu, u64 enable)
136 {
137 	out_be64(&spu->priv1->resource_allocation_enable_RW, enable);
138 }
139 
140 static u64 resource_allocation_enable_get(struct spu *spu)
141 {
142 	return in_be64(&spu->priv1->resource_allocation_enable_RW);
143 }
144 
145 const struct spu_priv1_ops spu_priv1_mmio_ops =
146 {
147 	.int_mask_and = int_mask_and,
148 	.int_mask_or = int_mask_or,
149 	.int_mask_set = int_mask_set,
150 	.int_mask_get = int_mask_get,
151 	.int_stat_clear = int_stat_clear,
152 	.int_stat_get = int_stat_get,
153 	.cpu_affinity_set = cpu_affinity_set,
154 	.mfc_dar_get = mfc_dar_get,
155 	.mfc_dsisr_get = mfc_dsisr_get,
156 	.mfc_dsisr_set = mfc_dsisr_set,
157 	.mfc_sdr_setup = mfc_sdr_setup,
158 	.mfc_sr1_set = mfc_sr1_set,
159 	.mfc_sr1_get = mfc_sr1_get,
160 	.mfc_tclass_id_set = mfc_tclass_id_set,
161 	.mfc_tclass_id_get = mfc_tclass_id_get,
162 	.tlb_invalidate = tlb_invalidate,
163 	.resource_allocation_groupID_set = resource_allocation_groupID_set,
164 	.resource_allocation_groupID_get = resource_allocation_groupID_get,
165 	.resource_allocation_enable_set = resource_allocation_enable_set,
166 	.resource_allocation_enable_get = resource_allocation_enable_get,
167 };
168