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path: root/drivers/crypto/ccp/ccp-ops.c
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Diffstat (limited to 'drivers/crypto/ccp/ccp-ops.c')
-rw-r--r--drivers/crypto/ccp/ccp-ops.c108
1 files changed, 69 insertions, 39 deletions
diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c
index d09c6c4af4aa..c6e883b296a9 100644
--- a/drivers/crypto/ccp/ccp-ops.c
+++ b/drivers/crypto/ccp/ccp-ops.c
@@ -611,15 +611,16 @@ static void ccp_get_dm_area(struct ccp_dm_workarea *wa, unsigned int wa_offset,
611 1); 611 1);
612} 612}
613 613
614static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa, 614static int ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
615 struct scatterlist *sg, 615 struct scatterlist *sg,
616 unsigned int len, unsigned int se_len, 616 unsigned int len, unsigned int se_len,
617 bool sign_extend) 617 bool sign_extend)
618{ 618{
619 unsigned int nbytes, sg_offset, dm_offset, ksb_len, i; 619 unsigned int nbytes, sg_offset, dm_offset, ksb_len, i;
620 u8 buffer[CCP_REVERSE_BUF_SIZE]; 620 u8 buffer[CCP_REVERSE_BUF_SIZE];
621 621
622 BUG_ON(se_len > sizeof(buffer)); 622 if (WARN_ON(se_len > sizeof(buffer)))
623 return -EINVAL;
623 624
624 sg_offset = len; 625 sg_offset = len;
625 dm_offset = 0; 626 dm_offset = 0;
@@ -642,6 +643,8 @@ static void ccp_reverse_set_dm_area(struct ccp_dm_workarea *wa,
642 se_len - ksb_len); 643 se_len - ksb_len);
643 } 644 }
644 } 645 }
646
647 return 0;
645} 648}
646 649
647static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa, 650static void ccp_reverse_get_dm_area(struct ccp_dm_workarea *wa,
@@ -1606,8 +1609,10 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1606 if (ret) 1609 if (ret)
1607 goto e_ksb; 1610 goto e_ksb;
1608 1611
1609 ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len, CCP_KSB_BYTES, 1612 ret = ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len,
1610 false); 1613 CCP_KSB_BYTES, false);
1614 if (ret)
1615 goto e_exp;
1611 ret = ccp_copy_to_ksb(cmd_q, &exp, op.jobid, op.ksb_key, 1616 ret = ccp_copy_to_ksb(cmd_q, &exp, op.jobid, op.ksb_key,
1612 CCP_PASSTHRU_BYTESWAP_NOOP); 1617 CCP_PASSTHRU_BYTESWAP_NOOP);
1613 if (ret) { 1618 if (ret) {
@@ -1623,11 +1628,15 @@ static int ccp_run_rsa_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1623 if (ret) 1628 if (ret)
1624 goto e_exp; 1629 goto e_exp;
1625 1630
1626 ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len, CCP_KSB_BYTES, 1631 ret = ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len,
1627 false); 1632 CCP_KSB_BYTES, false);
1633 if (ret)
1634 goto e_src;
1628 src.address += o_len; /* Adjust the address for the copy operation */ 1635 src.address += o_len; /* Adjust the address for the copy operation */
1629 ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len, CCP_KSB_BYTES, 1636 ret = ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len,
1630 false); 1637 CCP_KSB_BYTES, false);
1638 if (ret)
1639 goto e_src;
1631 src.address -= o_len; /* Reset the address to original value */ 1640 src.address -= o_len; /* Reset the address to original value */
1632 1641
1633 /* Prepare the output area for the operation */ 1642 /* Prepare the output area for the operation */
@@ -1841,21 +1850,27 @@ static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1841 save = src.address; 1850 save = src.address;
1842 1851
1843 /* Copy the ECC modulus */ 1852 /* Copy the ECC modulus */
1844 ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len, 1853 ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
1845 CCP_ECC_OPERAND_SIZE, false); 1854 CCP_ECC_OPERAND_SIZE, false);
1855 if (ret)
1856 goto e_src;
1846 src.address += CCP_ECC_OPERAND_SIZE; 1857 src.address += CCP_ECC_OPERAND_SIZE;
1847 1858
1848 /* Copy the first operand */ 1859 /* Copy the first operand */
1849 ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1, 1860 ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_1,
1850 ecc->u.mm.operand_1_len, 1861 ecc->u.mm.operand_1_len,
1851 CCP_ECC_OPERAND_SIZE, false); 1862 CCP_ECC_OPERAND_SIZE, false);
1863 if (ret)
1864 goto e_src;
1852 src.address += CCP_ECC_OPERAND_SIZE; 1865 src.address += CCP_ECC_OPERAND_SIZE;
1853 1866
1854 if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) { 1867 if (ecc->function != CCP_ECC_FUNCTION_MINV_384BIT) {
1855 /* Copy the second operand */ 1868 /* Copy the second operand */
1856 ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2, 1869 ret = ccp_reverse_set_dm_area(&src, ecc->u.mm.operand_2,
1857 ecc->u.mm.operand_2_len, 1870 ecc->u.mm.operand_2_len,
1858 CCP_ECC_OPERAND_SIZE, false); 1871 CCP_ECC_OPERAND_SIZE, false);
1872 if (ret)
1873 goto e_src;
1859 src.address += CCP_ECC_OPERAND_SIZE; 1874 src.address += CCP_ECC_OPERAND_SIZE;
1860 } 1875 }
1861 1876
@@ -1960,18 +1975,24 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1960 save = src.address; 1975 save = src.address;
1961 1976
1962 /* Copy the ECC modulus */ 1977 /* Copy the ECC modulus */
1963 ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len, 1978 ret = ccp_reverse_set_dm_area(&src, ecc->mod, ecc->mod_len,
1964 CCP_ECC_OPERAND_SIZE, false); 1979 CCP_ECC_OPERAND_SIZE, false);
1980 if (ret)
1981 goto e_src;
1965 src.address += CCP_ECC_OPERAND_SIZE; 1982 src.address += CCP_ECC_OPERAND_SIZE;
1966 1983
1967 /* Copy the first point X and Y coordinate */ 1984 /* Copy the first point X and Y coordinate */
1968 ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x, 1985 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.x,
1969 ecc->u.pm.point_1.x_len, 1986 ecc->u.pm.point_1.x_len,
1970 CCP_ECC_OPERAND_SIZE, false); 1987 CCP_ECC_OPERAND_SIZE, false);
1988 if (ret)
1989 goto e_src;
1971 src.address += CCP_ECC_OPERAND_SIZE; 1990 src.address += CCP_ECC_OPERAND_SIZE;
1972 ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y, 1991 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_1.y,
1973 ecc->u.pm.point_1.y_len, 1992 ecc->u.pm.point_1.y_len,
1974 CCP_ECC_OPERAND_SIZE, false); 1993 CCP_ECC_OPERAND_SIZE, false);
1994 if (ret)
1995 goto e_src;
1975 src.address += CCP_ECC_OPERAND_SIZE; 1996 src.address += CCP_ECC_OPERAND_SIZE;
1976 1997
1977 /* Set the first point Z coordianate to 1 */ 1998 /* Set the first point Z coordianate to 1 */
@@ -1980,13 +2001,17 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1980 2001
1981 if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) { 2002 if (ecc->function == CCP_ECC_FUNCTION_PADD_384BIT) {
1982 /* Copy the second point X and Y coordinate */ 2003 /* Copy the second point X and Y coordinate */
1983 ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x, 2004 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.x,
1984 ecc->u.pm.point_2.x_len, 2005 ecc->u.pm.point_2.x_len,
1985 CCP_ECC_OPERAND_SIZE, false); 2006 CCP_ECC_OPERAND_SIZE, false);
2007 if (ret)
2008 goto e_src;
1986 src.address += CCP_ECC_OPERAND_SIZE; 2009 src.address += CCP_ECC_OPERAND_SIZE;
1987 ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y, 2010 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.point_2.y,
1988 ecc->u.pm.point_2.y_len, 2011 ecc->u.pm.point_2.y_len,
1989 CCP_ECC_OPERAND_SIZE, false); 2012 CCP_ECC_OPERAND_SIZE, false);
2013 if (ret)
2014 goto e_src;
1990 src.address += CCP_ECC_OPERAND_SIZE; 2015 src.address += CCP_ECC_OPERAND_SIZE;
1991 2016
1992 /* Set the second point Z coordianate to 1 */ 2017 /* Set the second point Z coordianate to 1 */
@@ -1994,16 +2019,21 @@ static int ccp_run_ecc_pm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
1994 src.address += CCP_ECC_OPERAND_SIZE; 2019 src.address += CCP_ECC_OPERAND_SIZE;
1995 } else { 2020 } else {
1996 /* Copy the Domain "a" parameter */ 2021 /* Copy the Domain "a" parameter */
1997 ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a, 2022 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.domain_a,
1998 ecc->u.pm.domain_a_len, 2023 ecc->u.pm.domain_a_len,
1999 CCP_ECC_OPERAND_SIZE, false); 2024 CCP_ECC_OPERAND_SIZE, false);
2025 if (ret)
2026 goto e_src;
2000 src.address += CCP_ECC_OPERAND_SIZE; 2027 src.address += CCP_ECC_OPERAND_SIZE;
2001 2028
2002 if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) { 2029 if (ecc->function == CCP_ECC_FUNCTION_PMUL_384BIT) {
2003 /* Copy the scalar value */ 2030 /* Copy the scalar value */
2004 ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar, 2031 ret = ccp_reverse_set_dm_area(&src, ecc->u.pm.scalar,
2005 ecc->u.pm.scalar_len, 2032 ecc->u.pm.scalar_len,
2006 CCP_ECC_OPERAND_SIZE, false); 2033 CCP_ECC_OPERAND_SIZE,
2034 false);
2035 if (ret)
2036 goto e_src;
2007 src.address += CCP_ECC_OPERAND_SIZE; 2037 src.address += CCP_ECC_OPERAND_SIZE;
2008 } 2038 }
2009 } 2039 }
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-24 12:06:14 -0500