net/mlx4: remove useless code

[dpdk.git] / drivers / net / sfc / base / siena_sram.c

diff --git a/drivers/net/sfc/base/siena_sram.c b/drivers/net/sfc/base/siena_sram.c
index 411ef9d..572c2e9 100644 (file)
--- a/drivers/net/sfc/base/siena_sram.c
+++ b/drivers/net/sfc/base/siena_sram.c
@@ -71,4 +71,108 @@ siena_sram_init(
        EFX_BAR_WRITEO(enp, FR_AZ_SRM_UPD_EVQ_REG, &oword);
 }
 
+#if EFSYS_OPT_DIAG
+
+       __checkReturn   efx_rc_t
+siena_sram_test(
+       __in            efx_nic_t *enp,
+       __in            efx_sram_pattern_fn_t func)
+{
+       efx_oword_t oword;
+       efx_qword_t qword;
+       efx_qword_t verify;
+       size_t rows;
+       unsigned int wptr;
+       unsigned int rptr;
+       efx_rc_t rc;
+
+       EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+       /* Reconfigure into HALF buffer table mode */
+       EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 0);
+       EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword);
+
+       /*
+        * Move the descriptor caches up to the top of SRAM, and test
+        * all of SRAM below them. We only miss out one row here.
+        */
+       rows = SIENA_SRAM_ROWS - 1;
+       EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_RX_DC_BASE_ADR, rows);
+       EFX_BAR_WRITEO(enp, FR_AZ_SRM_RX_DC_CFG_REG, &oword);
+
+       EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_TX_DC_BASE_ADR, rows + 1);
+       EFX_BAR_WRITEO(enp, FR_AZ_SRM_TX_DC_CFG_REG, &oword);
+
+       /*
+        * Write the pattern through BUF_HALF_TBL. Write
+        * in 64 entry batches, waiting 1us in between each batch
+        * to guarantee not to overflow the SRAM fifo
+        */
+       for (wptr = 0, rptr = 0; wptr < rows; ++wptr) {
+               func(wptr, B_FALSE, &qword);
+               EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_HALF_TBL, wptr, &qword);
+
+               if ((wptr - rptr) < 64 && wptr < rows - 1)
+                       continue;
+
+               EFSYS_SPIN(1);
+
+               for (; rptr <= wptr; ++rptr) {
+                       func(rptr, B_FALSE, &qword);
+                       EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_HALF_TBL, rptr,
+                           &verify);
+
+                       if (!EFX_QWORD_IS_EQUAL(verify, qword)) {
+                               rc = EFAULT;
+                               goto fail1;
+                       }
+               }
+       }
+
+       /* And do the same negated */
+       for (wptr = 0, rptr = 0; wptr < rows; ++wptr) {
+               func(wptr, B_TRUE, &qword);
+               EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_HALF_TBL, wptr, &qword);
+
+               if ((wptr - rptr) < 64 && wptr < rows - 1)
+                       continue;
+
+               EFSYS_SPIN(1);
+
+               for (; rptr <= wptr; ++rptr) {
+                       func(rptr, B_TRUE, &qword);
+                       EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_HALF_TBL, rptr,
+                           &verify);
+
+                       if (!EFX_QWORD_IS_EQUAL(verify, qword)) {
+                               rc = EFAULT;
+                               goto fail2;
+                       }
+               }
+       }
+
+       /* Restore back to FULL buffer table mode */
+       EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 1);
+       EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword);
+
+       /*
+        * We don't need to reconfigure SRAM again because the API
+        * requires efx_nic_fini() to be called after an sram test.
+        */
+       return (0);
+
+fail2:
+       EFSYS_PROBE(fail2);
+fail1:
+       EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+       /* Restore back to FULL buffer table mode */
+       EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 1);
+       EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword);
+
+       return (rc);
+}
+
+#endif /* EFSYS_OPT_DIAG */
+
 #endif /* EFSYS_OPT_SIENA */