--- /dev/null
+/*
+ * 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
+
+#define TAG_TYPE_LBN 7
+#define TAG_TYPE_WIDTH 1
+#define TAG_TYPE_LARGE_ITEM_DECODE 1
+#define TAG_TYPE_SMALL_ITEM_DECODE 0
+
+#define TAG_SMALL_ITEM_NAME_LBN 3
+#define TAG_SMALL_ITEM_NAME_WIDTH 4
+#define TAG_SMALL_ITEM_SIZE_LBN 0
+#define TAG_SMALL_ITEM_SIZE_WIDTH 3
+
+#define TAG_LARGE_ITEM_NAME_LBN 0
+#define TAG_LARGE_ITEM_NAME_WIDTH 7
+
+#define TAG_NAME_END_DECODE 0x0f
+#define TAG_NAME_ID_STRING_DECODE 0x02
+#define TAG_NAME_VPD_R_DECODE 0x10
+#define TAG_NAME_VPD_W_DECODE 0x11
+
+#if EFSYS_OPT_SIENA
+
+static const efx_vpd_ops_t __efx_vpd_siena_ops = {
+ siena_vpd_init, /* evpdo_init */
+ siena_vpd_size, /* evpdo_size */
+ siena_vpd_read, /* evpdo_read */
+ siena_vpd_verify, /* evpdo_verify */
+ siena_vpd_reinit, /* evpdo_reinit */
+ siena_vpd_get, /* evpdo_get */
+ siena_vpd_set, /* evpdo_set */
+ siena_vpd_next, /* evpdo_next */
+ siena_vpd_write, /* evpdo_write */
+ siena_vpd_fini, /* evpdo_fini */
+};
+
+#endif /* EFSYS_OPT_SIENA */
+
+#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
+
+static const efx_vpd_ops_t __efx_vpd_ef10_ops = {
+ ef10_vpd_init, /* evpdo_init */
+ ef10_vpd_size, /* evpdo_size */
+ ef10_vpd_read, /* evpdo_read */
+ ef10_vpd_verify, /* evpdo_verify */
+ ef10_vpd_reinit, /* evpdo_reinit */
+ ef10_vpd_get, /* evpdo_get */
+ ef10_vpd_set, /* evpdo_set */
+ ef10_vpd_next, /* evpdo_next */
+ ef10_vpd_write, /* evpdo_write */
+ ef10_vpd_fini, /* evpdo_fini */
+};
+
+#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
+
+ __checkReturn efx_rc_t
+efx_vpd_init(
+ __in efx_nic_t *enp)
+{
+ const efx_vpd_ops_t *evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+ EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_VPD));
+
+ switch (enp->en_family) {
+#if EFSYS_OPT_SIENA
+ case EFX_FAMILY_SIENA:
+ evpdop = &__efx_vpd_siena_ops;
+ break;
+#endif /* EFSYS_OPT_SIENA */
+
+#if EFSYS_OPT_HUNTINGTON
+ case EFX_FAMILY_HUNTINGTON:
+ evpdop = &__efx_vpd_ef10_ops;
+ break;
+#endif /* EFSYS_OPT_HUNTINGTON */
+
+#if EFSYS_OPT_MEDFORD
+ case EFX_FAMILY_MEDFORD:
+ evpdop = &__efx_vpd_ef10_ops;
+ break;
+#endif /* EFSYS_OPT_MEDFORD */
+
+ default:
+ EFSYS_ASSERT(0);
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ if (evpdop->evpdo_init != NULL) {
+ if ((rc = evpdop->evpdo_init(enp)) != 0)
+ goto fail2;
+ }
+
+ enp->en_evpdop = evpdop;
+ enp->en_mod_flags |= EFX_MOD_VPD;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_size(
+ __in efx_nic_t *enp,
+ __out size_t *sizep)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_size(enp, sizep)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_read(
+ __in efx_nic_t *enp,
+ __out_bcount(size) caddr_t data,
+ __in size_t size)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_read(enp, data, size)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_verify(
+ __in efx_nic_t *enp,
+ __in_bcount(size) caddr_t data,
+ __in size_t size)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_verify(enp, data, size)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_reinit(
+ __in efx_nic_t *enp,
+ __in_bcount(size) caddr_t data,
+ __in size_t size)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if (evpdop->evpdo_reinit == NULL) {
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ if ((rc = evpdop->evpdo_reinit(enp, data, size)) != 0)
+ goto fail2;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_get(
+ __in efx_nic_t *enp,
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __inout efx_vpd_value_t *evvp)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_get(enp, data, size, evvp)) != 0) {
+ if (rc == ENOENT)
+ return (rc);
+
+ goto fail1;
+ }
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_set(
+ __in efx_nic_t *enp,
+ __inout_bcount(size) caddr_t data,
+ __in size_t size,
+ __in efx_vpd_value_t *evvp)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_set(enp, data, size, evvp)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_next(
+ __in efx_nic_t *enp,
+ __inout_bcount(size) caddr_t data,
+ __in size_t size,
+ __out efx_vpd_value_t *evvp,
+ __inout unsigned int *contp)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_next(enp, data, size, evvp, contp)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_write(
+ __in efx_nic_t *enp,
+ __in_bcount(size) caddr_t data,
+ __in size_t size)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if ((rc = evpdop->evpdo_write(enp, data, size)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+static __checkReturn efx_rc_t
+efx_vpd_next_tag(
+ __in caddr_t data,
+ __in size_t size,
+ __inout unsigned int *offsetp,
+ __out efx_vpd_tag_t *tagp,
+ __out uint16_t *lengthp)
+{
+ efx_byte_t byte;
+ efx_word_t word;
+ uint8_t name;
+ uint16_t length;
+ size_t headlen;
+ efx_rc_t rc;
+
+ if (*offsetp >= size) {
+ rc = EFAULT;
+ goto fail1;
+ }
+
+ EFX_POPULATE_BYTE_1(byte, EFX_BYTE_0, data[*offsetp]);
+
+ switch (EFX_BYTE_FIELD(byte, TAG_TYPE)) {
+ case TAG_TYPE_SMALL_ITEM_DECODE:
+ headlen = 1;
+
+ name = EFX_BYTE_FIELD(byte, TAG_SMALL_ITEM_NAME);
+ length = (uint16_t)EFX_BYTE_FIELD(byte, TAG_SMALL_ITEM_SIZE);
+
+ break;
+
+ case TAG_TYPE_LARGE_ITEM_DECODE:
+ headlen = 3;
+
+ if (*offsetp + headlen > size) {
+ rc = EFAULT;
+ goto fail2;
+ }
+
+ name = EFX_BYTE_FIELD(byte, TAG_LARGE_ITEM_NAME);
+ EFX_POPULATE_WORD_2(word,
+ EFX_BYTE_0, data[*offsetp + 1],
+ EFX_BYTE_1, data[*offsetp + 2]);
+ length = EFX_WORD_FIELD(word, EFX_WORD_0);
+
+ break;
+
+ default:
+ rc = EFAULT;
+ goto fail2;
+ }
+
+ if (*offsetp + headlen + length > size) {
+ rc = EFAULT;
+ goto fail3;
+ }
+
+ EFX_STATIC_ASSERT(TAG_NAME_END_DECODE == EFX_VPD_END);
+ EFX_STATIC_ASSERT(TAG_NAME_ID_STRING_DECODE == EFX_VPD_ID);
+ EFX_STATIC_ASSERT(TAG_NAME_VPD_R_DECODE == EFX_VPD_RO);
+ EFX_STATIC_ASSERT(TAG_NAME_VPD_W_DECODE == EFX_VPD_RW);
+ if (name != EFX_VPD_END && name != EFX_VPD_ID &&
+ name != EFX_VPD_RO) {
+ rc = EFAULT;
+ goto fail4;
+ }
+
+ *tagp = name;
+ *lengthp = length;
+ *offsetp += headlen;
+
+ return (0);
+
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+static __checkReturn efx_rc_t
+efx_vpd_next_keyword(
+ __in_bcount(size) caddr_t tag,
+ __in size_t size,
+ __in unsigned int pos,
+ __out efx_vpd_keyword_t *keywordp,
+ __out uint8_t *lengthp)
+{
+ efx_vpd_keyword_t keyword;
+ uint8_t length;
+ efx_rc_t rc;
+
+ if (pos + 3U > size) {
+ rc = EFAULT;
+ goto fail1;
+ }
+
+ keyword = EFX_VPD_KEYWORD(tag[pos], tag[pos + 1]);
+ length = tag[pos + 2];
+
+ if (length == 0 || pos + 3U + length > size) {
+ rc = EFAULT;
+ goto fail2;
+ }
+
+ *keywordp = keyword;
+ *lengthp = length;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_length(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __out size_t *lengthp)
+{
+ efx_vpd_tag_t tag;
+ unsigned int offset;
+ uint16_t taglen;
+ efx_rc_t rc;
+
+ offset = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &tag, &taglen)) != 0)
+ goto fail1;
+ offset += taglen;
+ if (tag == EFX_VPD_END)
+ break;
+ }
+
+ *lengthp = offset;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_verify(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __out_opt boolean_t *cksummedp)
+{
+ efx_vpd_tag_t tag;
+ efx_vpd_keyword_t keyword;
+ unsigned int offset;
+ unsigned int pos;
+ unsigned int i;
+ uint16_t taglen;
+ uint8_t keylen;
+ uint8_t cksum;
+ boolean_t cksummed = B_FALSE;
+ efx_rc_t rc;
+
+ /*
+ * Parse every tag,keyword in the existing VPD. If the csum is present,
+ * the assert it is correct, and is the final keyword in the RO block.
+ */
+ offset = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &tag, &taglen)) != 0)
+ goto fail1;
+ if (tag == EFX_VPD_END)
+ break;
+ else if (tag == EFX_VPD_ID)
+ goto done;
+
+ for (pos = 0; pos != taglen; pos += 3 + keylen) {
+ /* RV keyword must be the last in the block */
+ if (cksummed) {
+ rc = EFAULT;
+ goto fail2;
+ }
+
+ if ((rc = efx_vpd_next_keyword(data + offset,
+ taglen, pos, &keyword, &keylen)) != 0)
+ goto fail3;
+
+ if (keyword == EFX_VPD_KEYWORD('R', 'V')) {
+ cksum = 0;
+ for (i = 0; i < offset + pos + 4; i++)
+ cksum += data[i];
+
+ if (cksum != 0) {
+ rc = EFAULT;
+ goto fail4;
+ }
+
+ cksummed = B_TRUE;
+ }
+ }
+
+ done:
+ offset += taglen;
+ }
+
+ if (!cksummed) {
+ rc = EFAULT;
+ goto fail5;
+ }
+
+ if (cksummedp != NULL)
+ *cksummedp = cksummed;
+
+ return (0);
+
+fail5:
+ EFSYS_PROBE(fail5);
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+static uint8_t __efx_vpd_blank_pid[] = {
+ /* Large resource type ID length 1 */
+ 0x82, 0x01, 0x00,
+ /* Product name ' ' */
+ 0x32,
+};
+
+static uint8_t __efx_vpd_blank_r[] = {
+ /* Large resource type VPD-R length 4 */
+ 0x90, 0x04, 0x00,
+ /* RV keyword length 1 */
+ 'R', 'V', 0x01,
+ /* RV payload checksum */
+ 0x00,
+};
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_reinit(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __in boolean_t wantpid)
+{
+ unsigned int offset = 0;
+ unsigned int pos;
+ efx_byte_t byte;
+ uint8_t cksum;
+ efx_rc_t rc;
+
+ if (size < 0x100) {
+ rc = ENOSPC;
+ goto fail1;
+ }
+
+ if (wantpid) {
+ memcpy(data + offset, __efx_vpd_blank_pid,
+ sizeof (__efx_vpd_blank_pid));
+ offset += sizeof (__efx_vpd_blank_pid);
+ }
+
+ memcpy(data + offset, __efx_vpd_blank_r, sizeof (__efx_vpd_blank_r));
+ offset += sizeof (__efx_vpd_blank_r);
+
+ /* Update checksum */
+ cksum = 0;
+ for (pos = 0; pos < offset; pos++)
+ cksum += data[pos];
+ data[offset - 1] -= cksum;
+
+ /* Append trailing tag */
+ EFX_POPULATE_BYTE_3(byte,
+ TAG_TYPE, TAG_TYPE_SMALL_ITEM_DECODE,
+ TAG_SMALL_ITEM_NAME, TAG_NAME_END_DECODE,
+ TAG_SMALL_ITEM_SIZE, 0);
+ data[offset] = EFX_BYTE_FIELD(byte, EFX_BYTE_0);
+ offset++;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_next(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __out efx_vpd_tag_t *tagp,
+ __out efx_vpd_keyword_t *keywordp,
+ __out_opt unsigned int *payloadp,
+ __out_opt uint8_t *paylenp,
+ __inout unsigned int *contp)
+{
+ efx_vpd_tag_t tag;
+ efx_vpd_keyword_t keyword = 0;
+ unsigned int offset;
+ unsigned int pos;
+ unsigned int index;
+ uint16_t taglen;
+ uint8_t keylen;
+ uint8_t paylen;
+ efx_rc_t rc;
+
+ offset = index = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &tag, &taglen)) != 0)
+ goto fail1;
+
+ if (tag == EFX_VPD_END) {
+ keyword = 0;
+ paylen = 0;
+ index = 0;
+ break;
+ }
+
+ if (tag == EFX_VPD_ID) {
+ if (index++ == *contp) {
+ EFSYS_ASSERT3U(taglen, <, 0x100);
+ keyword = 0;
+ paylen = (uint8_t)MIN(taglen, 0xff);
+
+ goto done;
+ }
+ } else {
+ for (pos = 0; pos != taglen; pos += 3 + keylen) {
+ if ((rc = efx_vpd_next_keyword(data + offset,
+ taglen, pos, &keyword, &keylen)) != 0)
+ goto fail2;
+
+ if (index++ == *contp) {
+ offset += pos + 3;
+ paylen = keylen;
+
+ goto done;
+ }
+ }
+ }
+
+ offset += taglen;
+ }
+
+done:
+ *tagp = tag;
+ *keywordp = keyword;
+ if (payloadp != NULL)
+ *payloadp = offset;
+ if (paylenp != NULL)
+ *paylenp = paylen;
+
+ *contp = index;
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_get(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __in efx_vpd_tag_t tag,
+ __in efx_vpd_keyword_t keyword,
+ __out unsigned int *payloadp,
+ __out uint8_t *paylenp)
+{
+ efx_vpd_tag_t itag;
+ efx_vpd_keyword_t ikeyword;
+ unsigned int offset;
+ unsigned int pos;
+ uint16_t taglen;
+ uint8_t keylen;
+ efx_rc_t rc;
+
+ offset = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &itag, &taglen)) != 0)
+ goto fail1;
+ if (itag == EFX_VPD_END)
+ break;
+
+ if (itag == tag) {
+ if (itag == EFX_VPD_ID) {
+ EFSYS_ASSERT3U(taglen, <, 0x100);
+
+ *paylenp = (uint8_t)MIN(taglen, 0xff);
+ *payloadp = offset;
+ return (0);
+ }
+
+ for (pos = 0; pos != taglen; pos += 3 + keylen) {
+ if ((rc = efx_vpd_next_keyword(data + offset,
+ taglen, pos, &ikeyword, &keylen)) != 0)
+ goto fail2;
+
+ if (ikeyword == keyword) {
+ *paylenp = keylen;
+ *payloadp = offset + pos + 3;
+ return (0);
+ }
+ }
+ }
+
+ offset += taglen;
+ }
+
+ /* Not an error */
+ return (ENOENT);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_vpd_hunk_set(
+ __in_bcount(size) caddr_t data,
+ __in size_t size,
+ __in efx_vpd_value_t *evvp)
+{
+ efx_word_t word;
+ efx_vpd_tag_t tag;
+ efx_vpd_keyword_t keyword;
+ unsigned int offset;
+ unsigned int pos;
+ unsigned int taghead;
+ unsigned int source;
+ unsigned int dest;
+ unsigned int i;
+ uint16_t taglen;
+ uint8_t keylen;
+ uint8_t cksum;
+ size_t used;
+ efx_rc_t rc;
+
+ switch (evvp->evv_tag) {
+ case EFX_VPD_ID:
+ if (evvp->evv_keyword != 0) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ /* Can't delete the ID keyword */
+ if (evvp->evv_length == 0) {
+ rc = EINVAL;
+ goto fail1;
+ }
+ break;
+
+ case EFX_VPD_RO:
+ if (evvp->evv_keyword == EFX_VPD_KEYWORD('R', 'V')) {
+ rc = EINVAL;
+ goto fail1;
+ }
+ break;
+
+ default:
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ /* Determine total size of all current tags */
+ if ((rc = efx_vpd_hunk_length(data, size, &used)) != 0)
+ goto fail2;
+
+ offset = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ taghead = offset;
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &tag, &taglen)) != 0)
+ goto fail3;
+ if (tag == EFX_VPD_END)
+ break;
+ else if (tag != evvp->evv_tag) {
+ offset += taglen;
+ continue;
+ }
+
+ /* We only support modifying large resource tags */
+ if (offset - taghead != 3) {
+ rc = EINVAL;
+ goto fail4;
+ }
+
+ /*
+ * Work out the offset of the byte immediately after the
+ * old (=source) and new (=dest) new keyword/tag
+ */
+ pos = 0;
+ if (tag == EFX_VPD_ID) {
+ source = offset + taglen;
+ dest = offset + evvp->evv_length;
+ goto check_space;
+ }
+
+ EFSYS_ASSERT3U(tag, ==, EFX_VPD_RO);
+ source = dest = 0;
+ for (pos = 0; pos != taglen; pos += 3 + keylen) {
+ if ((rc = efx_vpd_next_keyword(data + offset,
+ taglen, pos, &keyword, &keylen)) != 0)
+ goto fail5;
+
+ if (keyword == evvp->evv_keyword &&
+ evvp->evv_length == 0) {
+ /* Deleting this keyword */
+ source = offset + pos + 3 + keylen;
+ dest = offset + pos;
+ break;
+
+ } else if (keyword == evvp->evv_keyword) {
+ /* Adjusting this keyword */
+ source = offset + pos + 3 + keylen;
+ dest = offset + pos + 3 + evvp->evv_length;
+ break;
+
+ } else if (keyword == EFX_VPD_KEYWORD('R', 'V')) {
+ /* The RV keyword must be at the end */
+ EFSYS_ASSERT3U(pos + 3 + keylen, ==, taglen);
+
+ /*
+ * The keyword doesn't already exist. If the
+ * user deleting a non-existant keyword then
+ * this is a no-op.
+ */
+ if (evvp->evv_length == 0)
+ return (0);
+
+ /* Insert this keyword before the RV keyword */
+ source = offset + pos;
+ dest = offset + pos + 3 + evvp->evv_length;
+ break;
+ }
+ }
+
+ check_space:
+ if (used + dest > size + source) {
+ rc = ENOSPC;
+ goto fail6;
+ }
+
+ /* Move trailing data */
+ (void) memmove(data + dest, data + source, used - source);
+
+ /* Copy contents */
+ memcpy(data + dest - evvp->evv_length, evvp->evv_value,
+ evvp->evv_length);
+
+ /* Insert new keyword header if required */
+ if (tag != EFX_VPD_ID && evvp->evv_length > 0) {
+ EFX_POPULATE_WORD_1(word, EFX_WORD_0,
+ evvp->evv_keyword);
+ data[offset + pos + 0] =
+ EFX_WORD_FIELD(word, EFX_BYTE_0);
+ data[offset + pos + 1] =
+ EFX_WORD_FIELD(word, EFX_BYTE_1);
+ data[offset + pos + 2] = evvp->evv_length;
+ }
+
+ /* Modify tag length (large resource type) */
+ taglen += (dest - source);
+ EFX_POPULATE_WORD_1(word, EFX_WORD_0, taglen);
+ data[offset - 2] = EFX_WORD_FIELD(word, EFX_BYTE_0);
+ data[offset - 1] = EFX_WORD_FIELD(word, EFX_BYTE_1);
+
+ goto checksum;
+ }
+
+ /* Unable to find the matching tag */
+ rc = ENOENT;
+ goto fail7;
+
+checksum:
+ /* Find the RV tag, and update the checksum */
+ offset = 0;
+ _NOTE(CONSTANTCONDITION)
+ while (1) {
+ if ((rc = efx_vpd_next_tag(data, size, &offset,
+ &tag, &taglen)) != 0)
+ goto fail8;
+ if (tag == EFX_VPD_END)
+ break;
+ if (tag == EFX_VPD_RO) {
+ for (pos = 0; pos != taglen; pos += 3 + keylen) {
+ if ((rc = efx_vpd_next_keyword(data + offset,
+ taglen, pos, &keyword, &keylen)) != 0)
+ goto fail9;
+
+ if (keyword == EFX_VPD_KEYWORD('R', 'V')) {
+ cksum = 0;
+ for (i = 0; i < offset + pos + 3; i++)
+ cksum += data[i];
+ data[i] = -cksum;
+ break;
+ }
+ }
+ }
+
+ offset += taglen;
+ }
+
+ /* Zero out the unused portion */
+ (void) memset(data + offset + taglen, 0xff, size - offset - taglen);
+
+ return (0);
+
+fail9:
+ EFSYS_PROBE(fail9);
+fail8:
+ EFSYS_PROBE(fail8);
+fail7:
+ EFSYS_PROBE(fail7);
+fail6:
+ EFSYS_PROBE(fail6);
+fail5:
+ EFSYS_PROBE(fail5);
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ void
+efx_vpd_fini(
+ __in efx_nic_t *enp)
+{
+ const efx_vpd_ops_t *evpdop = enp->en_evpdop;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_VPD);
+
+ if (evpdop->evpdo_fini != NULL)
+ evpdop->evpdo_fini(enp);
+
+ enp->en_evpdop = NULL;
+ enp->en_mod_flags &= ~EFX_MOD_VPD;
+}
+
+#endif /* EFSYS_OPT_VPD */
Code Review / deb_dpdk.git / blobdiff