1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun // Copyright 2019 IBM Corp.
3*4882a593Smuzhiyun #include <linux/sched/mm.h>
4*4882a593Smuzhiyun #include "trace.h"
5*4882a593Smuzhiyun #include "ocxl_internal.h"
6*4882a593Smuzhiyun
ocxl_global_mmio_read32(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u32 * val)7*4882a593Smuzhiyun int ocxl_global_mmio_read32(struct ocxl_afu *afu, size_t offset,
8*4882a593Smuzhiyun enum ocxl_endian endian, u32 *val)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 4)
11*4882a593Smuzhiyun return -EINVAL;
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
14*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
15*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
16*4882a593Smuzhiyun #endif
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun switch (endian) {
19*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
20*4882a593Smuzhiyun *val = readl_be((char *)afu->global_mmio_ptr + offset);
21*4882a593Smuzhiyun break;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun default:
24*4882a593Smuzhiyun *val = readl((char *)afu->global_mmio_ptr + offset);
25*4882a593Smuzhiyun break;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun return 0;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_read32);
31*4882a593Smuzhiyun
ocxl_global_mmio_read64(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u64 * val)32*4882a593Smuzhiyun int ocxl_global_mmio_read64(struct ocxl_afu *afu, size_t offset,
33*4882a593Smuzhiyun enum ocxl_endian endian, u64 *val)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 8)
36*4882a593Smuzhiyun return -EINVAL;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
39*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
40*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
41*4882a593Smuzhiyun #endif
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun switch (endian) {
44*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
45*4882a593Smuzhiyun *val = readq_be((char *)afu->global_mmio_ptr + offset);
46*4882a593Smuzhiyun break;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun default:
49*4882a593Smuzhiyun *val = readq((char *)afu->global_mmio_ptr + offset);
50*4882a593Smuzhiyun break;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_read64);
56*4882a593Smuzhiyun
ocxl_global_mmio_write32(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u32 val)57*4882a593Smuzhiyun int ocxl_global_mmio_write32(struct ocxl_afu *afu, size_t offset,
58*4882a593Smuzhiyun enum ocxl_endian endian, u32 val)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 4)
61*4882a593Smuzhiyun return -EINVAL;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
64*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
65*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
66*4882a593Smuzhiyun #endif
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun switch (endian) {
69*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
70*4882a593Smuzhiyun writel_be(val, (char *)afu->global_mmio_ptr + offset);
71*4882a593Smuzhiyun break;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun default:
74*4882a593Smuzhiyun writel(val, (char *)afu->global_mmio_ptr + offset);
75*4882a593Smuzhiyun break;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun return 0;
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_write32);
82*4882a593Smuzhiyun
ocxl_global_mmio_write64(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u64 val)83*4882a593Smuzhiyun int ocxl_global_mmio_write64(struct ocxl_afu *afu, size_t offset,
84*4882a593Smuzhiyun enum ocxl_endian endian, u64 val)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 8)
87*4882a593Smuzhiyun return -EINVAL;
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
90*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
91*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
92*4882a593Smuzhiyun #endif
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun switch (endian) {
95*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
96*4882a593Smuzhiyun writeq_be(val, (char *)afu->global_mmio_ptr + offset);
97*4882a593Smuzhiyun break;
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun default:
100*4882a593Smuzhiyun writeq(val, (char *)afu->global_mmio_ptr + offset);
101*4882a593Smuzhiyun break;
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun return 0;
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_write64);
108*4882a593Smuzhiyun
ocxl_global_mmio_set32(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u32 mask)109*4882a593Smuzhiyun int ocxl_global_mmio_set32(struct ocxl_afu *afu, size_t offset,
110*4882a593Smuzhiyun enum ocxl_endian endian, u32 mask)
111*4882a593Smuzhiyun {
112*4882a593Smuzhiyun u32 tmp;
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 4)
115*4882a593Smuzhiyun return -EINVAL;
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
118*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
119*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
120*4882a593Smuzhiyun #endif
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun switch (endian) {
123*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
124*4882a593Smuzhiyun tmp = readl_be((char *)afu->global_mmio_ptr + offset);
125*4882a593Smuzhiyun tmp |= mask;
126*4882a593Smuzhiyun writel_be(tmp, (char *)afu->global_mmio_ptr + offset);
127*4882a593Smuzhiyun break;
128*4882a593Smuzhiyun
129*4882a593Smuzhiyun default:
130*4882a593Smuzhiyun tmp = readl((char *)afu->global_mmio_ptr + offset);
131*4882a593Smuzhiyun tmp |= mask;
132*4882a593Smuzhiyun writel(tmp, (char *)afu->global_mmio_ptr + offset);
133*4882a593Smuzhiyun break;
134*4882a593Smuzhiyun }
135*4882a593Smuzhiyun
136*4882a593Smuzhiyun return 0;
137*4882a593Smuzhiyun }
138*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_set32);
139*4882a593Smuzhiyun
ocxl_global_mmio_set64(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u64 mask)140*4882a593Smuzhiyun int ocxl_global_mmio_set64(struct ocxl_afu *afu, size_t offset,
141*4882a593Smuzhiyun enum ocxl_endian endian, u64 mask)
142*4882a593Smuzhiyun {
143*4882a593Smuzhiyun u64 tmp;
144*4882a593Smuzhiyun
145*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 8)
146*4882a593Smuzhiyun return -EINVAL;
147*4882a593Smuzhiyun
148*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
149*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
150*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
151*4882a593Smuzhiyun #endif
152*4882a593Smuzhiyun
153*4882a593Smuzhiyun switch (endian) {
154*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
155*4882a593Smuzhiyun tmp = readq_be((char *)afu->global_mmio_ptr + offset);
156*4882a593Smuzhiyun tmp |= mask;
157*4882a593Smuzhiyun writeq_be(tmp, (char *)afu->global_mmio_ptr + offset);
158*4882a593Smuzhiyun break;
159*4882a593Smuzhiyun
160*4882a593Smuzhiyun default:
161*4882a593Smuzhiyun tmp = readq((char *)afu->global_mmio_ptr + offset);
162*4882a593Smuzhiyun tmp |= mask;
163*4882a593Smuzhiyun writeq(tmp, (char *)afu->global_mmio_ptr + offset);
164*4882a593Smuzhiyun break;
165*4882a593Smuzhiyun }
166*4882a593Smuzhiyun
167*4882a593Smuzhiyun return 0;
168*4882a593Smuzhiyun }
169*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_set64);
170*4882a593Smuzhiyun
ocxl_global_mmio_clear32(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u32 mask)171*4882a593Smuzhiyun int ocxl_global_mmio_clear32(struct ocxl_afu *afu, size_t offset,
172*4882a593Smuzhiyun enum ocxl_endian endian, u32 mask)
173*4882a593Smuzhiyun {
174*4882a593Smuzhiyun u32 tmp;
175*4882a593Smuzhiyun
176*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 4)
177*4882a593Smuzhiyun return -EINVAL;
178*4882a593Smuzhiyun
179*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
180*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
181*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
182*4882a593Smuzhiyun #endif
183*4882a593Smuzhiyun
184*4882a593Smuzhiyun switch (endian) {
185*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
186*4882a593Smuzhiyun tmp = readl_be((char *)afu->global_mmio_ptr + offset);
187*4882a593Smuzhiyun tmp &= ~mask;
188*4882a593Smuzhiyun writel_be(tmp, (char *)afu->global_mmio_ptr + offset);
189*4882a593Smuzhiyun break;
190*4882a593Smuzhiyun
191*4882a593Smuzhiyun default:
192*4882a593Smuzhiyun tmp = readl((char *)afu->global_mmio_ptr + offset);
193*4882a593Smuzhiyun tmp &= ~mask;
194*4882a593Smuzhiyun writel(tmp, (char *)afu->global_mmio_ptr + offset);
195*4882a593Smuzhiyun break;
196*4882a593Smuzhiyun }
197*4882a593Smuzhiyun
198*4882a593Smuzhiyun
199*4882a593Smuzhiyun return 0;
200*4882a593Smuzhiyun }
201*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_clear32);
202*4882a593Smuzhiyun
ocxl_global_mmio_clear64(struct ocxl_afu * afu,size_t offset,enum ocxl_endian endian,u64 mask)203*4882a593Smuzhiyun int ocxl_global_mmio_clear64(struct ocxl_afu *afu, size_t offset,
204*4882a593Smuzhiyun enum ocxl_endian endian, u64 mask)
205*4882a593Smuzhiyun {
206*4882a593Smuzhiyun u64 tmp;
207*4882a593Smuzhiyun
208*4882a593Smuzhiyun if (offset > afu->config.global_mmio_size - 8)
209*4882a593Smuzhiyun return -EINVAL;
210*4882a593Smuzhiyun
211*4882a593Smuzhiyun #ifdef __BIG_ENDIAN__
212*4882a593Smuzhiyun if (endian == OCXL_HOST_ENDIAN)
213*4882a593Smuzhiyun endian = OCXL_BIG_ENDIAN;
214*4882a593Smuzhiyun #endif
215*4882a593Smuzhiyun
216*4882a593Smuzhiyun switch (endian) {
217*4882a593Smuzhiyun case OCXL_BIG_ENDIAN:
218*4882a593Smuzhiyun tmp = readq_be((char *)afu->global_mmio_ptr + offset);
219*4882a593Smuzhiyun tmp &= ~mask;
220*4882a593Smuzhiyun writeq_be(tmp, (char *)afu->global_mmio_ptr + offset);
221*4882a593Smuzhiyun break;
222*4882a593Smuzhiyun
223*4882a593Smuzhiyun default:
224*4882a593Smuzhiyun tmp = readq((char *)afu->global_mmio_ptr + offset);
225*4882a593Smuzhiyun tmp &= ~mask;
226*4882a593Smuzhiyun writeq(tmp, (char *)afu->global_mmio_ptr + offset);
227*4882a593Smuzhiyun break;
228*4882a593Smuzhiyun }
229*4882a593Smuzhiyun
230*4882a593Smuzhiyun writeq(tmp, (char *)afu->global_mmio_ptr + offset);
231*4882a593Smuzhiyun
232*4882a593Smuzhiyun return 0;
233*4882a593Smuzhiyun }
234*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ocxl_global_mmio_clear64);
235