X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fs390%2Fcrypto%2Fcrypt_s390.h;h=2b137089f6251bbd920523770fa07821d25a79d1;hb=refs%2Fheads%2Fvserver;hp=d1c259a7fe33a8763901db0f68d460bf3e61dbff;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index d1c259a7f..2b137089f 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -20,6 +20,9 @@
 #define CRYPT_S390_OP_MASK 0xFF00
 #define CRYPT_S390_FUNC_MASK 0x00FF
 
+#define CRYPT_S390_PRIORITY 300
+#define CRYPT_S390_COMPOSITE_PRIORITY 400
+
 /* s930 cryptographic operations */
 enum crypt_s390_operations {
 	CRYPT_S390_KM   = 0x0100,
@@ -101,63 +104,6 @@ struct crypt_s390_query_status {
 	u64 low;
 };
 
-/*
- * Standard fixup and ex_table sections for crypt_s390 inline functions.
- * label 0: the s390 crypto operation
- * label 1: just after 1 to catch illegal operation exception
- *          (unsupported model)
- * label 6: the return point after fixup
- * label 7: set error value if exception _in_ crypto operation
- * label 8: set error value if illegal operation exception
- * [ret] is the variable to receive the error code
- * [ERR] is the error code value
- */
-#ifndef CONFIG_64BIT
-#define __crypt_s390_fixup \
-	".section .fixup,\"ax\" \n"	\
-	"7:	lhi	%0,%h[e1] \n"	\
-	"	bras	1,9f \n"	\
-	"	.long	6b \n"		\
-	"8:	lhi	%0,%h[e2] \n"	\
-	"	bras	1,9f \n"	\
-	"	.long	6b \n"		\
-	"9:	l	1,0(1) \n"	\
-	"	br	1 \n"		\
-	".previous \n"			\
-	".section __ex_table,\"a\" \n"	\
-	"	.align	4 \n"		\
-	"	.long	0b,7b \n"	\
-	"	.long	1b,8b \n"	\
-	".previous"
-#else /* CONFIG_64BIT */
-#define __crypt_s390_fixup \
-	".section .fixup,\"ax\" \n"	\
-	"7:	lhi	%0,%h[e1] \n"	\
-	"	jg	6b \n"		\
-	"8:	lhi	%0,%h[e2] \n"	\
-	"	jg	6b \n"		\
-	".previous\n"			\
-	".section __ex_table,\"a\" \n"	\
-	"	.align	8 \n"		\
-	"	.quad	0b,7b \n"	\
-	"	.quad	1b,8b \n"	\
-	".previous"
-#endif /* CONFIG_64BIT */
-
-/*
- * Standard code for setting the result of s390 crypto instructions.
- * %0: the register which will receive the result
- * [result]: the register containing the result (e.g. second operand length
- * to compute number of processed bytes].
- */
-#ifndef CONFIG_64BIT
-#define __crypt_s390_set_result \
-	"	lr	%0,%[result] \n"
-#else /* CONFIG_64BIT */
-#define __crypt_s390_set_result \
-	"	lgr	%0,%[result] \n"
-#endif
-
 /*
  * Executes the KM (CIPHER MESSAGE) operation of the CPU.
  * @param func: the function code passed to KM; see crypt_s390_km_func
@@ -173,28 +119,24 @@ crypt_s390_km(long func, void* param, u8* dest, const u8* src, long src_len)
 {
 	register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
 	register void* __param asm("1") = param;
-	register u8* __dest asm("4") = dest;
 	register const u8* __src asm("2") = src;
 	register long __src_len asm("3") = src_len;
+	register u8* __dest asm("4") = dest;
 	int ret;
 
-	ret = 0;
-	__asm__ __volatile__ (
-		"0:	.insn	rre,0xB92E0000,%1,%2 \n" /* KM opcode */
+	asm volatile(
+		"0:	.insn	rre,0xb92e0000,%3,%1 \n" /* KM opcode */
 		"1:	brc	1,0b \n" /* handle partial completion */
-		__crypt_s390_set_result
-		"6:	\n"
-		__crypt_s390_fixup
-		: "+d" (ret), "+a" (__dest), "+a" (__src),
-		  [result] "+d" (__src_len)
-		: [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
-		  "a" (__param)
-		: "cc", "memory"
-	);
-	if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){
-		ret = src_len - ret;
-	}
-	return ret;
+		"	ahi	%0,%h7\n"
+		"2:	ahi	%0,%h8\n"
+		"3:\n"
+		EX_TABLE(0b,3b) EX_TABLE(1b,2b)
+		: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
+		: "d" (__func), "a" (__param), "0" (-EFAULT),
+		  "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
+	if (ret < 0)
+		return ret;
+	return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
 }
 
 /*
@@ -212,28 +154,24 @@ crypt_s390_kmc(long func, void* param, u8* dest, const u8* src, long src_len)
 {
 	register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
 	register void* __param asm("1") = param;
-	register u8* __dest asm("4") = dest;
 	register const u8* __src asm("2") = src;
 	register long __src_len asm("3") = src_len;
+	register u8* __dest asm("4") = dest;
 	int ret;
 
-	ret = 0;
-	__asm__ __volatile__ (
-		"0:	.insn	rre,0xB92F0000,%1,%2 \n" /* KMC opcode */
+	asm volatile(
+		"0:	.insn	rre,0xb92f0000,%3,%1 \n" /* KMC opcode */
 		"1:	brc	1,0b \n" /* handle partial completion */
-		__crypt_s390_set_result
-		"6:	\n"
-		__crypt_s390_fixup
-		: "+d" (ret), "+a" (__dest), "+a" (__src),
-		  [result] "+d" (__src_len)
-		: [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
-		  "a" (__param)
-		: "cc", "memory"
-	);
-	if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){
-		ret = src_len - ret;
-	}
-	return ret;
+		"	ahi	%0,%h7\n"
+		"2:	ahi	%0,%h8\n"
+		"3:\n"
+		EX_TABLE(0b,3b) EX_TABLE(1b,2b)
+		: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
+		: "d" (__func), "a" (__param), "0" (-EFAULT),
+		  "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
+	if (ret < 0)
+		return ret;
+	return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
 }
 
 /*
@@ -255,22 +193,19 @@ crypt_s390_kimd(long func, void* param, const u8* src, long src_len)
 	register long __src_len asm("3") = src_len;
 	int ret;
 
-	ret = 0;
-	__asm__ __volatile__ (
-		"0:	.insn	rre,0xB93E0000,%1,%1 \n" /* KIMD opcode */
-		"1:	brc	1,0b \n" /* handle partical completion */
-		__crypt_s390_set_result
-		"6:	\n"
-		__crypt_s390_fixup
-		: "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
-		: [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
-		  "a" (__param)
-		: "cc", "memory"
-	);
-	if (ret >= 0 && (func & CRYPT_S390_FUNC_MASK)){
-		ret = src_len - ret;
-	}
-	return ret;
+	asm volatile(
+		"0:	.insn	rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */
+		"1:	brc	1,0b \n" /* handle partial completion */
+		"	ahi	%0,%h6\n"
+		"2:	ahi	%0,%h7\n"
+		"3:\n"
+		EX_TABLE(0b,3b) EX_TABLE(1b,2b)
+		: "=d" (ret), "+a" (__src), "+d" (__src_len)
+		: "d" (__func), "a" (__param), "0" (-EFAULT),
+		  "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
+	if (ret < 0)
+		return ret;
+	return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
 }
 
 /*
@@ -291,22 +226,19 @@ crypt_s390_klmd(long func, void* param, const u8* src, long src_len)
 	register long __src_len asm("3") = src_len;
 	int ret;
 
-	ret = 0;
-	__asm__ __volatile__ (
-		"0:	.insn	rre,0xB93F0000,%1,%1 \n" /* KLMD opcode */
-		"1:	brc	1,0b \n" /* handle partical completion */
-		__crypt_s390_set_result
-		"6:	\n"
-		__crypt_s390_fixup
-		: "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
-		: [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
-		  "a" (__param)
-		: "cc", "memory"
-	);
-	if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){
-		ret = src_len - ret;
-	}
-	return ret;
+	asm volatile(
+		"0:	.insn	rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */
+		"1:	brc	1,0b \n" /* handle partial completion */
+		"	ahi	%0,%h6\n"
+		"2:	ahi	%0,%h7\n"
+		"3:\n"
+		EX_TABLE(0b,3b) EX_TABLE(1b,2b)
+		: "=d" (ret), "+a" (__src), "+d" (__src_len)
+		: "d" (__func), "a" (__param), "0" (-EFAULT),
+		  "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
+	if (ret < 0)
+		return ret;
+	return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
 }
 
 /*
@@ -328,22 +260,19 @@ crypt_s390_kmac(long func, void* param, const u8* src, long src_len)
 	register long __src_len asm("3") = src_len;
 	int ret;
 
-	ret = 0;
-	__asm__ __volatile__ (
-		"0:	.insn	rre,0xB91E0000,%5,%5 \n" /* KMAC opcode */
-		"1:	brc	1,0b \n" /* handle partical completion */
-		__crypt_s390_set_result
-		"6:	\n"
-		__crypt_s390_fixup
-		: "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
-		: [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
-		  "a" (__param)
-		: "cc", "memory"
-	);
-	if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){
-		ret = src_len - ret;
-	}
-	return ret;
+	asm volatile(
+		"0:	.insn	rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */
+		"1:	brc	1,0b \n" /* handle partial completion */
+		"	ahi	%0,%h6\n"
+		"2:	ahi	%0,%h7\n"
+		"3:\n"
+		EX_TABLE(0b,3b) EX_TABLE(1b,2b)
+		: "=d" (ret), "+a" (__src), "+d" (__src_len)
+		: "d" (__func), "a" (__param), "0" (-EFAULT),
+		  "K" (ENOSYS), "K" (-ENOSYS + EFAULT) : "cc", "memory");
+	if (ret < 0)
+		return ret;
+	return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
 }
 
 /**