Imported Upstream version 17.05

1 files changed, 463 insertions, 0 deletions

diff --git a/drivers/net/sfc/base/ef10_vpd.c b/drivers/net/sfc/base/ef10_vpd.c
new file mode 100644
index 00000000..71123a90
--- /dev/null
+++ b/drivers/net/sfc/base/ef10_vpd.c
@@ -0,0 +1,463 @@
+/*
+ * Copyright (c) 2009-2016 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_VPD
+
+#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
+
+#include "ef10_tlv_layout.h"
+
+	__checkReturn		efx_rc_t
+ef10_vpd_init(
+	__in			efx_nic_t *enp)
+{
+	caddr_t svpd;
+	size_t svpd_size;
+	uint32_t pci_pf;
+	uint32_t tag;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	if (enp->en_nic_cfg.enc_vpd_is_global) {
+		tag = TLV_TAG_GLOBAL_STATIC_VPD;
+	} else {
+		pci_pf = enp->en_nic_cfg.enc_pf;
+		tag = TLV_TAG_PF_STATIC_VPD(pci_pf);
+	}
+
+	/*
+	 * The VPD interface exposes VPD resources from the combined static and
+	 * dynamic VPD storage. As the static VPD configuration should *never*
+	 * change, we can cache it.
+	 */
+	svpd = NULL;
+	svpd_size = 0;
+	rc = ef10_nvram_partn_read_tlv(enp,
+	    NVRAM_PARTITION_TYPE_STATIC_CONFIG,
+	    tag, &svpd, &svpd_size);
+	if (rc != 0) {
+		if (rc == EACCES) {
+			/* Unprivileged functions cannot access VPD */
+			goto out;
+		}
+		goto fail1;
+	}
+
+	if (svpd != NULL && svpd_size > 0) {
+		if ((rc = efx_vpd_hunk_verify(svpd, svpd_size, NULL)) != 0)
+			goto fail2;
+	}
+
+	enp->en_arch.ef10.ena_svpd = svpd;
+	enp->en_arch.ef10.ena_svpd_length = svpd_size;
+
+out:
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+
+	EFSYS_KMEM_FREE(enp->en_esip, svpd_size, svpd);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_size(
+	__in			efx_nic_t *enp,
+	__out			size_t *sizep)
+{
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	/*
+	 * This function returns the total size the user should allocate
+	 * for all VPD operations. We've already cached the static vpd,
+	 * so we just need to return an upper bound on the dynamic vpd,
+	 * which is the size of the DYNAMIC_CONFIG partition.
+	 */
+	if ((rc = efx_mcdi_nvram_info(enp, NVRAM_PARTITION_TYPE_DYNAMIC_CONFIG,
+		    sizep, NULL, NULL, NULL)) != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_read(
+	__in			efx_nic_t *enp,
+	__out_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	caddr_t dvpd;
+	size_t dvpd_size;
+	uint32_t pci_pf;
+	uint32_t tag;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	if (enp->en_nic_cfg.enc_vpd_is_global) {
+		tag = TLV_TAG_GLOBAL_DYNAMIC_VPD;
+	} else {
+		pci_pf = enp->en_nic_cfg.enc_pf;
+		tag = TLV_TAG_PF_DYNAMIC_VPD(pci_pf);
+	}
+
+	if ((rc = ef10_nvram_partn_read_tlv(enp,
+		    NVRAM_PARTITION_TYPE_DYNAMIC_CONFIG,
+		    tag, &dvpd, &dvpd_size)) != 0)
+		goto fail1;
+
+	if (dvpd_size > size) {
+		rc = ENOSPC;
+		goto fail2;
+	}
+	memcpy(data, dvpd, dvpd_size);
+
+	/* Pad data with all-1s, consistent with update operations */
+	memset(data + dvpd_size, 0xff, size - dvpd_size);
+
+	EFSYS_KMEM_FREE(enp->en_esip, dvpd_size, dvpd);
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+
+	EFSYS_KMEM_FREE(enp->en_esip, dvpd_size, dvpd);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_verify(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	efx_vpd_tag_t stag;
+	efx_vpd_tag_t dtag;
+	efx_vpd_keyword_t skey;
+	efx_vpd_keyword_t dkey;
+	unsigned int scont;
+	unsigned int dcont;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	/*
+	 * Strictly you could take the view that dynamic vpd is optional.
+	 * Instead, to conform more closely to the read/verify/reinit()
+	 * paradigm, we require dynamic vpd. ef10_vpd_reinit() will
+	 * reinitialize it as required.
+	 */
+	if ((rc = efx_vpd_hunk_verify(data, size, NULL)) != 0)
+		goto fail1;
+
+	/*
+	 * Verify that there is no duplication between the static and
+	 * dynamic cfg sectors.
+	 */
+	if (enp->en_arch.ef10.ena_svpd_length == 0)
+		goto done;
+
+	dcont = 0;
+	_NOTE(CONSTANTCONDITION)
+	while (1) {
+		if ((rc = efx_vpd_hunk_next(data, size, &dtag,
+		    &dkey, NULL, NULL, &dcont)) != 0)
+			goto fail2;
+		if (dcont == 0)
+			break;
+
+		/*
+		 * Skip the RV keyword. It should be present in both the static
+		 * and dynamic cfg sectors.
+		 */
+		if (dtag == EFX_VPD_RO && dkey == EFX_VPD_KEYWORD('R', 'V'))
+			continue;
+
+		scont = 0;
+		_NOTE(CONSTANTCONDITION)
+		while (1) {
+			if ((rc = efx_vpd_hunk_next(
+			    enp->en_arch.ef10.ena_svpd,
+			    enp->en_arch.ef10.ena_svpd_length, &stag, &skey,
+			    NULL, NULL, &scont)) != 0)
+				goto fail3;
+			if (scont == 0)
+				break;
+
+			if (stag == dtag && skey == dkey) {
+				rc = EEXIST;
+				goto fail4;
+			}
+		}
+	}
+
+done:
+	return (0);
+
+fail4:
+	EFSYS_PROBE(fail4);
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_reinit(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	boolean_t wantpid;
+	efx_rc_t rc;
+
+	/*
+	 * Only create an ID string if the dynamic cfg doesn't have one
+	 */
+	if (enp->en_arch.ef10.ena_svpd_length == 0)
+		wantpid = B_TRUE;
+	else {
+		unsigned int offset;
+		uint8_t length;
+
+		rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+				    enp->en_arch.ef10.ena_svpd_length,
+				    EFX_VPD_ID, 0, &offset, &length);
+		if (rc == 0)
+			wantpid = B_FALSE;
+		else if (rc == ENOENT)
+			wantpid = B_TRUE;
+		else
+			goto fail1;
+	}
+
+	if ((rc = efx_vpd_hunk_reinit(data, size, wantpid)) != 0)
+		goto fail2;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_get(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size,
+	__inout			efx_vpd_value_t *evvp)
+{
+	unsigned int offset;
+	uint8_t length;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	/* Attempt to satisfy the request from svpd first */
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
+		if ((rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+		    enp->en_arch.ef10.ena_svpd_length, evvp->evv_tag,
+		    evvp->evv_keyword, &offset, &length)) == 0) {
+			evvp->evv_length = length;
+			memcpy(evvp->evv_value,
+			    enp->en_arch.ef10.ena_svpd + offset, length);
+			return (0);
+		} else if (rc != ENOENT)
+			goto fail1;
+	}
+
+	/* And then from the provided data buffer */
+	if ((rc = efx_vpd_hunk_get(data, size, evvp->evv_tag,
+	    evvp->evv_keyword, &offset, &length)) != 0) {
+		if (rc == ENOENT)
+			return (rc);
+		goto fail2;
+	}
+
+	evvp->evv_length = length;
+	memcpy(evvp->evv_value, data + offset, length);
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_set(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size,
+	__in			efx_vpd_value_t *evvp)
+{
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	/* If the provided (tag,keyword) exists in svpd, then it is readonly */
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
+		unsigned int offset;
+		uint8_t length;
+
+		if ((rc = efx_vpd_hunk_get(enp->en_arch.ef10.ena_svpd,
+		    enp->en_arch.ef10.ena_svpd_length, evvp->evv_tag,
+		    evvp->evv_keyword, &offset, &length)) == 0) {
+			rc = EACCES;
+			goto fail1;
+		}
+	}
+
+	if ((rc = efx_vpd_hunk_set(data, size, evvp)) != 0)
+		goto fail2;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_next(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size,
+	__out			efx_vpd_value_t *evvp,
+	__inout			unsigned int *contp)
+{
+	_NOTE(ARGUNUSED(enp, data, size, evvp, contp))
+
+	return (ENOTSUP);
+}
+
+	__checkReturn		efx_rc_t
+ef10_vpd_write(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	size_t vpd_length;
+	uint32_t pci_pf;
+	uint32_t tag;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	if (enp->en_nic_cfg.enc_vpd_is_global) {
+		tag = TLV_TAG_GLOBAL_DYNAMIC_VPD;
+	} else {
+		pci_pf = enp->en_nic_cfg.enc_pf;
+		tag = TLV_TAG_PF_DYNAMIC_VPD(pci_pf);
+	}
+
+	/* Determine total length of new dynamic VPD */
+	if ((rc = efx_vpd_hunk_length(data, size, &vpd_length)) != 0)
+		goto fail1;
+
+	/* Store new dynamic VPD in all segments in DYNAMIC_CONFIG partition */
+	if ((rc = ef10_nvram_partn_write_segment_tlv(enp,
+		    NVRAM_PARTITION_TYPE_DYNAMIC_CONFIG,
+		    tag, data, vpd_length, B_TRUE)) != 0) {
+		goto fail2;
+	}
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+				void
+ef10_vpd_fini(
+	__in			efx_nic_t *enp)
+{
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+		    enp->en_family == EFX_FAMILY_MEDFORD);
+
+	if (enp->en_arch.ef10.ena_svpd_length > 0) {
+		EFSYS_KMEM_FREE(enp->en_esip, enp->en_arch.ef10.ena_svpd_length,
+				enp->en_arch.ef10.ena_svpd);
+
+		enp->en_arch.ef10.ena_svpd = NULL;
+		enp->en_arch.ef10.ena_svpd_length = 0;
+	}
+}
+
+#endif	/* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
+
+#endif	/* EFSYS_OPT_VPD */