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-rw-r--r--arch/s390/crypto/crypt_s390.h204
1 files changed, 65 insertions, 139 deletions
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index efd836c2e4a6..2b137089f625 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -105,63 +105,6 @@ struct crypt_s390_query_status {
105}; 105};
106 106
107/* 107/*
108 * Standard fixup and ex_table sections for crypt_s390 inline functions.
109 * label 0: the s390 crypto operation
110 * label 1: just after 1 to catch illegal operation exception
111 * (unsupported model)
112 * label 6: the return point after fixup
113 * label 7: set error value if exception _in_ crypto operation
114 * label 8: set error value if illegal operation exception
115 * [ret] is the variable to receive the error code
116 * [ERR] is the error code value
117 */
118#ifndef CONFIG_64BIT
119#define __crypt_s390_fixup \
120 ".section .fixup,\"ax\" \n" \
121 "7: lhi %0,%h[e1] \n" \
122 " bras 1,9f \n" \
123 " .long 6b \n" \
124 "8: lhi %0,%h[e2] \n" \
125 " bras 1,9f \n" \
126 " .long 6b \n" \
127 "9: l 1,0(1) \n" \
128 " br 1 \n" \
129 ".previous \n" \
130 ".section __ex_table,\"a\" \n" \
131 " .align 4 \n" \
132 " .long 0b,7b \n" \
133 " .long 1b,8b \n" \
134 ".previous"
135#else /* CONFIG_64BIT */
136#define __crypt_s390_fixup \
137 ".section .fixup,\"ax\" \n" \
138 "7: lhi %0,%h[e1] \n" \
139 " jg 6b \n" \
140 "8: lhi %0,%h[e2] \n" \
141 " jg 6b \n" \
142 ".previous\n" \
143 ".section __ex_table,\"a\" \n" \
144 " .align 8 \n" \
145 " .quad 0b,7b \n" \
146 " .quad 1b,8b \n" \
147 ".previous"
148#endif /* CONFIG_64BIT */
149
150/*
151 * Standard code for setting the result of s390 crypto instructions.
152 * %0: the register which will receive the result
153 * [result]: the register containing the result (e.g. second operand length
154 * to compute number of processed bytes].
155 */
156#ifndef CONFIG_64BIT
157#define __crypt_s390_set_result \
158 " lr %0,%[result] \n"
159#else /* CONFIG_64BIT */
160#define __crypt_s390_set_result \
161 " lgr %0,%[result] \n"
162#endif
163
164/*
165 * Executes the KM (CIPHER MESSAGE) operation of the CPU. 108 * Executes the KM (CIPHER MESSAGE) operation of the CPU.
166 * @param func: the function code passed to KM; see crypt_s390_km_func 109 * @param func: the function code passed to KM; see crypt_s390_km_func
167 * @param param: address of parameter block; see POP for details on each func 110 * @param param: address of parameter block; see POP for details on each func
@@ -176,28 +119,24 @@ crypt_s390_km(long func, void* param, u8* dest, const u8* src, long src_len)
176{ 119{
177 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; 120 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
178 register void* __param asm("1") = param; 121 register void* __param asm("1") = param;
179 register u8* __dest asm("4") = dest;
180 register const u8* __src asm("2") = src; 122 register const u8* __src asm("2") = src;
181 register long __src_len asm("3") = src_len; 123 register long __src_len asm("3") = src_len;
124 register u8* __dest asm("4") = dest;
182 int ret; 125 int ret;
183 126
184 ret = 0; 127 asm volatile(
185 __asm__ __volatile__ ( 128 "0: .insn rre,0xb92e0000,%3,%1 \n" /* KM opcode */
186 "0: .insn rre,0xB92E0000,%1,%2 \n" /* KM opcode */
187 "1: brc 1,0b \n" /* handle partial completion */ 129 "1: brc 1,0b \n" /* handle partial completion */
188 __crypt_s390_set_result 130 " ahi %0,%h7\n"
189 "6: \n" 131 "2: ahi %0,%h8\n"
190 __crypt_s390_fixup 132 "3:\n"
191 : "+d" (ret), "+a" (__dest), "+a" (__src), 133 EX_TABLE(0b,3b) EX_TABLE(1b,2b)
192 [result] "+d" (__src_len) 134 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
193 : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), 135 : "d" (__func), "a" (__param), "0" (-EFAULT),
194 "a" (__param) 136 "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
195 : "cc", "memory" 137 if (ret < 0)
196 ); 138 return ret;
197 if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ 139 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
198 ret = src_len - ret;
199 }
200 return ret;
201} 140}
202 141
203/* 142/*
@@ -215,28 +154,24 @@ crypt_s390_kmc(long func, void* param, u8* dest, const u8* src, long src_len)
215{ 154{
216 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; 155 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
217 register void* __param asm("1") = param; 156 register void* __param asm("1") = param;
218 register u8* __dest asm("4") = dest;
219 register const u8* __src asm("2") = src; 157 register const u8* __src asm("2") = src;
220 register long __src_len asm("3") = src_len; 158 register long __src_len asm("3") = src_len;
159 register u8* __dest asm("4") = dest;
221 int ret; 160 int ret;
222 161
223 ret = 0; 162 asm volatile(
224 __asm__ __volatile__ ( 163 "0: .insn rre,0xb92f0000,%3,%1 \n" /* KMC opcode */
225 "0: .insn rre,0xB92F0000,%1,%2 \n" /* KMC opcode */
226 "1: brc 1,0b \n" /* handle partial completion */ 164 "1: brc 1,0b \n" /* handle partial completion */
227 __crypt_s390_set_result 165 " ahi %0,%h7\n"
228 "6: \n" 166 "2: ahi %0,%h8\n"
229 __crypt_s390_fixup 167 "3:\n"
230 : "+d" (ret), "+a" (__dest), "+a" (__src), 168 EX_TABLE(0b,3b) EX_TABLE(1b,2b)
231 [result] "+d" (__src_len) 169 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
232 : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), 170 : "d" (__func), "a" (__param), "0" (-EFAULT),
233 "a" (__param) 171 "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
234 : "cc", "memory" 172 if (ret < 0)
235 ); 173 return ret;
236 if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ 174 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
237 ret = src_len - ret;
238 }
239 return ret;
240} 175}
241 176
242/* 177/*
@@ -258,22 +193,19 @@ crypt_s390_kimd(long func, void* param, const u8* src, long src_len)
258 register long __src_len asm("3") = src_len; 193 register long __src_len asm("3") = src_len;
259 int ret; 194 int ret;
260 195
261 ret = 0; 196 asm volatile(
262 __asm__ __volatile__ ( 197 "0: .insn rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */
263 "0: .insn rre,0xB93E0000,%1,%1 \n" /* KIMD opcode */ 198 "1: brc 1,0b \n" /* handle partial completion */
264 "1: brc 1,0b \n" /* handle partical completion */ 199 " ahi %0,%h6\n"
265 __crypt_s390_set_result 200 "2: ahi %0,%h7\n"
266 "6: \n" 201 "3:\n"
267 __crypt_s390_fixup 202 EX_TABLE(0b,3b) EX_TABLE(1b,2b)
268 : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) 203 : "=d" (ret), "+a" (__src), "+d" (__src_len)
269 : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), 204 : "d" (__func), "a" (__param), "0" (-EFAULT),
270 "a" (__param) 205 "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
271 : "cc", "memory" 206 if (ret < 0)
272 ); 207 return ret;
273 if (ret >= 0 && (func & CRYPT_S390_FUNC_MASK)){ 208 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
274 ret = src_len - ret;
275 }
276 return ret;
277} 209}
278 210
279/* 211/*
@@ -294,22 +226,19 @@ crypt_s390_klmd(long func, void* param, const u8* src, long src_len)
294 register long __src_len asm("3") = src_len; 226 register long __src_len asm("3") = src_len;
295 int ret; 227 int ret;
296 228
297 ret = 0; 229 asm volatile(
298 __asm__ __volatile__ ( 230 "0: .insn rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */
299 "0: .insn rre,0xB93F0000,%1,%1 \n" /* KLMD opcode */ 231 "1: brc 1,0b \n" /* handle partial completion */
300 "1: brc 1,0b \n" /* handle partical completion */ 232 " ahi %0,%h6\n"
301 __crypt_s390_set_result 233 "2: ahi %0,%h7\n"
302 "6: \n" 234 "3:\n"
303 __crypt_s390_fixup 235 EX_TABLE(0b,3b) EX_TABLE(1b,2b)
304 : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) 236 : "=d" (ret), "+a" (__src), "+d" (__src_len)
305 : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), 237 : "d" (__func), "a" (__param), "0" (-EFAULT),
306 "a" (__param) 238 "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
307 : "cc", "memory" 239 if (ret < 0)
308 ); 240 return ret;
309 if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ 241 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
310 ret = src_len - ret;
311 }
312 return ret;
313} 242}
314 243
315/* 244/*
@@ -331,22 +260,19 @@ crypt_s390_kmac(long func, void* param, const u8* src, long src_len)
331 register long __src_len asm("3") = src_len; 260 register long __src_len asm("3") = src_len;
332 int ret; 261 int ret;
333 262
334 ret = 0; 263 asm volatile(
335 __asm__ __volatile__ ( 264 "0: .insn rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */
336 "0: .insn rre,0xB91E0000,%5,%5 \n" /* KMAC opcode */ 265 "1: brc 1,0b \n" /* handle partial completion */
337 "1: brc 1,0b \n" /* handle partical completion */ 266 " ahi %0,%h6\n"
338 __crypt_s390_set_result 267 "2: ahi %0,%h7\n"
339 "6: \n" 268 "3:\n"
340 __crypt_s390_fixup 269 EX_TABLE(0b,3b) EX_TABLE(1b,2b)
341 : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) 270 : "=d" (ret), "+a" (__src), "+d" (__src_len)
342 : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), 271 : "d" (__func), "a" (__param), "0" (-EFAULT),
343 "a" (__param) 272 "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
344 : "cc", "memory" 273 if (ret < 0)
345 ); 274 return ret;
346 if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ 275 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
347 ret = src_len - ret;
348 }
349 return ret;
350} 276}
351 277
352/** 278/**
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-20 13:09:31 -0500