crypto/nx/nx-common-powernv.c

62 static unsigned int nx842_ct;	/* used in icswx function */
65  * Using same values as in skiboot or coprocessor type representing
66  * in NX workbook.
71 static int (*nx842_powernv_exec)(const unsigned char *in,
79  * first direct DDE in the list.
123 		     bool in)
130 			 in ? "input" : "output", pa, DDE_BUFFER_ALIGN);
141 			 in ? "input" : "output", len, DDE_BUFFER_LAST_MULT);
142 		if (in)
164 			 total_len, in ? "input" : "output", len);
165 		if (in)
257 		 * DDE byte count exceeds the limit specified in Maximum
295 		/* shouldn't happen, we're in HYP mode */
300 		CSB_ERR(csb, "Too many DDEs in DDL");
349 		CSB_ERR(csb, "Internal error in coprocessor");
381 	pr_debug_ratelimited("Processed %u bytes in %lu us\n",
388 static int nx842_config_crb(const unsigned char *in, unsigned int inlen,
405 			(unsigned char *)in, inlen, true);
435  * @in: input buffer pointer
441  * @fc: function code, see CCW Function Codes in nx-842.h
444  *   0		Success, output of length @outlenp stored in the buffer at @out
450  *   -ETIMEDOUT	hardware did not complete operation in reasonable time
453 static int nx842_exec_icswx(const unsigned char *in, unsigned int inlen,
474 	ret = nx842_config_crb(in, inlen, out, outlen, wmem);
497 	 * NX842 coprocessor sets 3rd bit in CR register with XER[S0].
537  * @in: input buffer pointer
543  * @fc: function code, see CCW Function Codes in nx-842.h
546  *   0		Success, output of length @outlenp stored in the buffer
553  *   -ETIMEDOUT	hardware did not complete operation in reasonable time
556 static int nx842_exec_vas(const unsigned char *in, unsigned int inlen,
575 	ret = nx842_config_crb(in, inlen, out, outlen, wmem);
621  * The input buffer is compressed and the result is stored in the
628  * @in: input buffer pointer
637 static int nx842_powernv_compress(const unsigned char *in, unsigned int inlen,
641 	return nx842_powernv_exec(in, inlen, out, outlenp,
649  * The input buffer is decompressed and the result is stored in the
656  * @in: input buffer pointer
665 static int nx842_powernv_decompress(const unsigned char *in, unsigned int inlen,
669 	return nx842_powernv_exec(in, inlen, out, outlenp,
706  * engine and save txwin in percpu cpu_txwin.
707  * cpu_txwin is used in copy/paste operation for each compression /
724 			 * GZIP is not supported in kernel right now.
833 	 * Maximum RX window credits can not be more than #CRBs in
856 	 * coprocessor instance in the system. So to make it
858 	 * GZIP for pid and provides this value to kernel in pid
1090 		 * 842 compression is supported only in kernel.
1096 		 * GZIP is not supported in kernel right now.
1123 	 * GZIP engine is supported only in power9 or later and nx842_ct