--- /dev/null	Tue May  3 20:52:15 2016
+++ new/usr/src/uts/common/io/sfxge/common/siena_sram.c	Tue May  3 20:52:15 2016
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2009-2015 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing official
+ * policies, either expressed or implied, of the FreeBSD Project.
+ */
+
+#include "efx.h"
+#include "efx_impl.h"
+
+#if EFSYS_OPT_SIENA
+
+			void
+siena_sram_init(
+	__in		efx_nic_t *enp)
+{
+	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
+	efx_oword_t oword;
+	uint32_t rx_base, tx_base;
+
+	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	rx_base = encp->enc_buftbl_limit;
+	tx_base = rx_base + (encp->enc_rxq_limit *
+	    EFX_RXQ_DC_NDESCS(EFX_RXQ_DC_SIZE));
+
+	/* Initialize the transmit descriptor cache */
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_TX_DC_BASE_ADR, tx_base);
+	EFX_BAR_WRITEO(enp, FR_AZ_SRM_TX_DC_CFG_REG, &oword);
+
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_TX_DC_SIZE, EFX_TXQ_DC_SIZE);
+	EFX_BAR_WRITEO(enp, FR_AZ_TX_DC_CFG_REG, &oword);
+
+	/* Initialize the receive descriptor cache */
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_RX_DC_BASE_ADR, rx_base);
+	EFX_BAR_WRITEO(enp, FR_AZ_SRM_RX_DC_CFG_REG, &oword);
+
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DC_SIZE, EFX_RXQ_DC_SIZE);
+	EFX_BAR_WRITEO(enp, FR_AZ_RX_DC_CFG_REG, &oword);
+
+	/* Set receive descriptor pre-fetch low water mark */
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DC_PF_LWM, 56);
+	EFX_BAR_WRITEO(enp, FR_AZ_RX_DC_PF_WM_REG, &oword);
+
+	/* Set the event queue to use for SRAM updates */
+	EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_UPD_EVQ_ID, 0);
+	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 */
