MIPS: Octeon: Delete potentially dangerous feature checks

We should not need to read fuses during normal operation, also the current
code has issues with that (not safe for concurrent access). Since there
are no in-kernel users for these, just delete them. Drivers should
not need such OCTEON_HAS_FEATURE mechanism in any case, instead the
information should be passed via device tree.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Cc: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7665/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 52 deletions

diff --git a/arch/mips/include/asm/octeon/octeon-feature.h b/arch/mips/include/asm/octeon/octeon-feature.h
index 90e05a8d4b15..c4fe81f47f53 100644
--- a/arch/mips/include/asm/octeon/octeon-feature.h
+++ b/arch/mips/include/asm/octeon/octeon-feature.h
@@ -86,8 +86,6 @@ enum octeon_feature {
 	OCTEON_MAX_FEATURE
 };
 
-static inline int cvmx_fuse_read(int fuse);
-
 /**
  * Determine if the current Octeon supports a specific feature. These
  * checks have been optimized to be fairly quick, but they should still
@@ -105,33 +103,6 @@ static inline int octeon_has_feature(enum octeon_feature feature)
 	case OCTEON_FEATURE_SAAD:
 		return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
 
-	case OCTEON_FEATURE_ZIP:
-		if (OCTEON_IS_MODEL(OCTEON_CN30XX)
-		    || OCTEON_IS_MODEL(OCTEON_CN50XX)
-		    || OCTEON_IS_MODEL(OCTEON_CN52XX))
-			return 0;
-		else if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1))
-			return 1;
-		else
-			return !cvmx_fuse_read(121);
-
-	case OCTEON_FEATURE_CRYPTO:
-		if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
-			union cvmx_mio_fus_dat2 fus_2;
-			fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
-			if (fus_2.s.nocrypto || fus_2.s.nomul) {
-				return 0;
-			} else if (!fus_2.s.dorm_crypto) {
-				return 1;
-			} else {
-				union cvmx_rnm_ctl_status st;
-				st.u64 = cvmx_read_csr(CVMX_RNM_CTL_STATUS);
-				return st.s.eer_val;
-			}
-		} else {
-			return !cvmx_fuse_read(90);
-		}
-
 	case OCTEON_FEATURE_DORM_CRYPTO:
 		if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
 			union cvmx_mio_fus_dat2 fus_2;
@@ -188,29 +159,6 @@ static inline int octeon_has_feature(enum octeon_feature feature)
 			  && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
 			  && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
 
-	case OCTEON_FEATURE_DFA:
-		if (!OCTEON_IS_MODEL(OCTEON_CN38XX)
-		    && !OCTEON_IS_MODEL(OCTEON_CN31XX)
-		    && !OCTEON_IS_MODEL(OCTEON_CN58XX))
-			return 0;
-		else if (OCTEON_IS_MODEL(OCTEON_CN3020))
-			return 0;
-		else
-			return !cvmx_fuse_read(120);
-
-	case OCTEON_FEATURE_HFA:
-		if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
-			return 0;
-		else
-			return !cvmx_fuse_read(90);
-
-	case OCTEON_FEATURE_DFM:
-		if (!(OCTEON_IS_MODEL(OCTEON_CN63XX)
-		      || OCTEON_IS_MODEL(OCTEON_CN66XX)))
-			return 0;
-		else
-			return !cvmx_fuse_read(90);
-
 	case OCTEON_FEATURE_MDIO_CLAUSE_45:
 		return !(OCTEON_IS_MODEL(OCTEON_CN3XXX)
 			 || OCTEON_IS_MODEL(OCTEON_CN58XX)