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Commit 56c10d5e authored by Haren Myneni's avatar Haren Myneni Committed by Michael Ellerman
Browse files

crypto/nx: Create nx842_configure_crb function 



Configure CRB is moved to nx842_configure_crb() so that it can
be used for icswx and VAS exec functions. VAS function will be
added later with P9 support.

Signed-off-by: default avatarHaren Myneni <haren@us.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent c97f8169

drivers/crypto/nx/nx-842-powernv.c

+38 −19
Original line number Diff line number Diff line
@@ -358,6 +358,40 @@ static int wait_for_csb(struct nx842_workmem *wmem, 
	return 0;

}



static int nx842_config_crb(const unsigned char *in, unsigned int inlen,

			unsigned char *out, unsigned int outlen,

			struct nx842_workmem *wmem)

{

	struct coprocessor_request_block *crb;

	struct coprocessor_status_block *csb;

	u64 csb_addr;

	int ret;



	crb = &wmem->crb;

	csb = &crb->csb;



	/* Clear any previous values */

	memset(crb, 0, sizeof(*crb));



	/* set up DDLs */

	ret = setup_ddl(&crb->source, wmem->ddl_in,

			(unsigned char *)in, inlen, true);

	if (ret)

		return ret;



	ret = setup_ddl(&crb->target, wmem->ddl_out,

			out, outlen, false);

	if (ret)

		return ret;



	/* set up CRB's CSB addr */

	csb_addr = nx842_get_pa(csb) & CRB_CSB_ADDRESS;

	csb_addr |= CRB_CSB_AT; /* Addrs are phys */

	crb->csb_addr = cpu_to_be64(csb_addr);



	return 0;

}



/**

 * nx842_exec_icswx - compress/decompress data using the 842 algorithm

 *
@@ -397,7 +431,6 @@ static int nx842_exec_icswx(const unsigned char *in, unsigned int inlen, 
	struct coprocessor_status_block *csb;

	struct nx842_workmem *wmem;

	int ret;

	u64 csb_addr;

	u32 ccw;

	unsigned int outlen = *outlenp;
@@ -411,33 +444,19 @@ static int nx842_exec_icswx(const unsigned char *in, unsigned int inlen, 
		return -ENODEV;

	}



	crb = &wmem->crb;

	csb = &crb->csb;



	/* Clear any previous values */

	memset(crb, 0, sizeof(*crb));



	/* set up DDLs */

	ret = setup_ddl(&crb->source, wmem->ddl_in,

			(unsigned char *)in, inlen, true);

	if (ret)

		return ret;

	ret = setup_ddl(&crb->target, wmem->ddl_out,

			out, outlen, false);

	ret = nx842_config_crb(in, inlen, out, outlen, wmem);

	if (ret)

		return ret;



	crb = &wmem->crb;

	csb = &crb->csb;



	/* set up CCW */

	ccw = 0;

	ccw = SET_FIELD(CCW_CT, ccw, nx842_ct);

	ccw = SET_FIELD(CCW_CI_842, ccw, 0); /* use 0 for hw auto-selection */

	ccw = SET_FIELD(CCW_FC_842, ccw, fc);



	/* set up CRB's CSB addr */

	csb_addr = nx842_get_pa(csb) & CRB_CSB_ADDRESS;

	csb_addr |= CRB_CSB_AT; /* Addrs are phys */

	crb->csb_addr = cpu_to_be64(csb_addr);



	wmem->start = ktime_get();



	/* do ICSWX */