1 files changed, 618 insertions, 0 deletions

diff --git a/drivers/net/sfc/base/siena_vpd.c b/drivers/net/sfc/base/siena_vpd.c
new file mode 100644
index 00000000..4fb2e426
--- /dev/null
+++ b/drivers/net/sfc/base/siena_vpd.c
@@ -0,0 +1,618 @@
+/*
+ * 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_SIENA
+
+static	__checkReturn			efx_rc_t
+siena_vpd_get_static(
+	__in				efx_nic_t *enp,
+	__in				uint32_t partn,
+	__deref_out_bcount_opt(*sizep)	caddr_t *svpdp,
+	__out				size_t *sizep)
+{
+	siena_mc_static_config_hdr_t *scfg;
+	caddr_t svpd;
+	size_t size;
+	uint8_t cksum;
+	unsigned int vpd_offset;
+	unsigned int vpd_length;
+	unsigned int hdr_length;
+	unsigned int pos;
+	unsigned int region;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(partn == MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT0 ||
+		    partn == MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT1);
+
+	/* Allocate sufficient memory for the entire static cfg area */
+	if ((rc = siena_nvram_partn_size(enp, partn, &size)) != 0)
+		goto fail1;
+
+	EFSYS_KMEM_ALLOC(enp->en_esip, size, scfg);
+	if (scfg == NULL) {
+		rc = ENOMEM;
+		goto fail2;
+	}
+
+	if ((rc = siena_nvram_partn_read(enp, partn, 0,
+	    (caddr_t)scfg, SIENA_NVRAM_CHUNK)) != 0)
+		goto fail3;
+
+	/* Verify the magic number */
+	if (EFX_DWORD_FIELD(scfg->magic, EFX_DWORD_0) !=
+	    SIENA_MC_STATIC_CONFIG_MAGIC) {
+		rc = EINVAL;
+		goto fail4;
+	}
+
+	/* All future versions of the structure must be backwards compatible */
+	EFX_STATIC_ASSERT(SIENA_MC_STATIC_CONFIG_VERSION == 0);
+
+	hdr_length = EFX_WORD_FIELD(scfg->length, EFX_WORD_0);
+	vpd_offset = EFX_DWORD_FIELD(scfg->static_vpd_offset, EFX_DWORD_0);
+	vpd_length = EFX_DWORD_FIELD(scfg->static_vpd_length, EFX_DWORD_0);
+
+	/* Verify the hdr doesn't overflow the sector size */
+	if (hdr_length > size || vpd_offset > size || vpd_length > size ||
+	    vpd_length + vpd_offset > size) {
+		rc = EINVAL;
+		goto fail5;
+	}
+
+	/* Read the remainder of scfg + static vpd */
+	region = vpd_offset + vpd_length;
+	if (region > SIENA_NVRAM_CHUNK) {
+		if ((rc = siena_nvram_partn_read(enp, partn, SIENA_NVRAM_CHUNK,
+		    (caddr_t)scfg + SIENA_NVRAM_CHUNK,
+		    region - SIENA_NVRAM_CHUNK)) != 0)
+			goto fail6;
+	}
+
+	/* Verify checksum */
+	cksum = 0;
+	for (pos = 0; pos < hdr_length; pos++)
+		cksum += ((uint8_t *)scfg)[pos];
+	if (cksum != 0) {
+		rc = EINVAL;
+		goto fail7;
+	}
+
+	if (vpd_length == 0)
+		svpd = NULL;
+	else {
+		/* Copy the vpd data out */
+		EFSYS_KMEM_ALLOC(enp->en_esip, vpd_length, svpd);
+		if (svpd == NULL) {
+			rc = ENOMEM;
+			goto fail8;
+		}
+		memcpy(svpd, (caddr_t)scfg + vpd_offset, vpd_length);
+	}
+
+	EFSYS_KMEM_FREE(enp->en_esip, size, scfg);
+
+	*svpdp = svpd;
+	*sizep = vpd_length;
+
+	return (0);
+
+fail8:
+	EFSYS_PROBE(fail8);
+fail7:
+	EFSYS_PROBE(fail7);
+fail6:
+	EFSYS_PROBE(fail6);
+fail5:
+	EFSYS_PROBE(fail5);
+fail4:
+	EFSYS_PROBE(fail4);
+fail3:
+	EFSYS_PROBE(fail3);
+
+	EFSYS_KMEM_FREE(enp->en_esip, size, scfg);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_vpd_init(
+	__in			efx_nic_t *enp)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	caddr_t svpd = NULL;
+	unsigned int partn;
+	size_t size = 0;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	partn = (emip->emi_port == 1)
+		? MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT0
+		: MC_CMD_NVRAM_TYPE_STATIC_CFG_PORT1;
+
+	/*
+	 * We need the static VPD sector to present a unified static+dynamic
+	 * VPD, that is, basically on every read, write, verify cycle. Since
+	 * it should *never* change we can just cache it here.
+	 */
+	if ((rc = siena_vpd_get_static(enp, partn, &svpd, &size)) != 0)
+		goto fail1;
+
+	if (svpd != NULL && size > 0) {
+		if ((rc = efx_vpd_hunk_verify(svpd, size, NULL)) != 0)
+			goto fail2;
+	}
+
+	enp->en_u.siena.enu_svpd = svpd;
+	enp->en_u.siena.enu_svpd_length = size;
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+
+	EFSYS_KMEM_FREE(enp->en_esip, size, svpd);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_vpd_size(
+	__in			efx_nic_t *enp,
+	__out			size_t *sizep)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	uint32_t partn;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	/*
+	 * 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.
+	 * Since the dynamic_config structure can change under our feet,
+	 * (as version numbers are inserted), just be safe and return the
+	 * total size of the dynamic_config *sector*
+	 */
+	partn = (emip->emi_port == 1)
+		? MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0
+		: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
+
+	if ((rc = siena_nvram_partn_size(enp, partn, sizep)) != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_vpd_read(
+	__in			efx_nic_t *enp,
+	__out_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	siena_mc_dynamic_config_hdr_t *dcfg = NULL;
+	unsigned int vpd_length;
+	unsigned int vpd_offset;
+	unsigned int dcfg_partn;
+	size_t dcfg_size;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	dcfg_partn = (emip->emi_port == 1)
+		? MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0
+		: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
+
+	if ((rc = siena_nvram_get_dynamic_cfg(enp, dcfg_partn,
+	    B_TRUE, &dcfg, &dcfg_size)) != 0)
+		goto fail1;
+
+	vpd_length = EFX_DWORD_FIELD(dcfg->dynamic_vpd_length, EFX_DWORD_0);
+	vpd_offset = EFX_DWORD_FIELD(dcfg->dynamic_vpd_offset, EFX_DWORD_0);
+
+	if (vpd_length > size) {
+		rc = EFAULT;	/* Invalid dcfg: header bigger than sector */
+		goto fail2;
+	}
+
+	EFSYS_ASSERT3U(vpd_length, <=, size);
+	memcpy(data, (caddr_t)dcfg + vpd_offset, vpd_length);
+
+	/* Pad data with all-1s, consistent with update operations */
+	memset(data + vpd_length, 0xff, size - vpd_length);
+
+	EFSYS_KMEM_FREE(enp->en_esip, dcfg_size, dcfg);
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+
+	EFSYS_KMEM_FREE(enp->en_esip, dcfg_size, dcfg);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_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_SIENA);
+
+	/*
+	 * 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. siena_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_u.siena.enu_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_u.siena.enu_svpd,
+			    enp->en_u.siena.enu_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
+siena_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 a PID if the dynamic cfg doesn't have one
+	 */
+	if (enp->en_u.siena.enu_svpd_length == 0)
+		wantpid = B_TRUE;
+	else {
+		unsigned int offset;
+		uint8_t length;
+
+		rc = efx_vpd_hunk_get(enp->en_u.siena.enu_svpd,
+				    enp->en_u.siena.enu_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
+siena_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_SIENA);
+
+	/* Attempt to satisfy the request from svpd first */
+	if (enp->en_u.siena.enu_svpd_length > 0) {
+		if ((rc = efx_vpd_hunk_get(enp->en_u.siena.enu_svpd,
+		    enp->en_u.siena.enu_svpd_length, evvp->evv_tag,
+		    evvp->evv_keyword, &offset, &length)) == 0) {
+			evvp->evv_length = length;
+			memcpy(evvp->evv_value,
+			    enp->en_u.siena.enu_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
+siena_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_SIENA);
+
+	/* If the provided (tag,keyword) exists in svpd, then it is readonly */
+	if (enp->en_u.siena.enu_svpd_length > 0) {
+		unsigned int offset;
+		uint8_t length;
+
+		if ((rc = efx_vpd_hunk_get(enp->en_u.siena.enu_svpd,
+		    enp->en_u.siena.enu_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
+siena_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
+siena_vpd_write(
+	__in			efx_nic_t *enp,
+	__in_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	siena_mc_dynamic_config_hdr_t *dcfg = NULL;
+	unsigned int vpd_offset;
+	unsigned int dcfg_partn;
+	unsigned int hdr_length;
+	unsigned int pos;
+	uint8_t cksum;
+	size_t partn_size, dcfg_size;
+	size_t vpd_length;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	/* Determine total length of all tags */
+	if ((rc = efx_vpd_hunk_length(data, size, &vpd_length)) != 0)
+		goto fail1;
+
+	/* Lock dynamic config sector for write, and read structure only */
+	dcfg_partn = (emip->emi_port == 1)
+		? MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0
+		: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
+
+	if ((rc = siena_nvram_partn_size(enp, dcfg_partn, &partn_size)) != 0)
+		goto fail2;
+
+	if ((rc = siena_nvram_partn_lock(enp, dcfg_partn)) != 0)
+		goto fail3;
+
+	if ((rc = siena_nvram_get_dynamic_cfg(enp, dcfg_partn,
+	    B_FALSE, &dcfg, &dcfg_size)) != 0)
+		goto fail4;
+
+	hdr_length = EFX_WORD_FIELD(dcfg->length, EFX_WORD_0);
+
+	/* Allocated memory should have room for the new VPD */
+	if (hdr_length + vpd_length > dcfg_size) {
+		rc = ENOSPC;
+		goto fail5;
+	}
+
+	/* Copy in new vpd and update header */
+	vpd_offset = dcfg_size - vpd_length;
+	EFX_POPULATE_DWORD_1(dcfg->dynamic_vpd_offset, EFX_DWORD_0, vpd_offset);
+	memcpy((caddr_t)dcfg + vpd_offset, data, vpd_length);
+	EFX_POPULATE_DWORD_1(dcfg->dynamic_vpd_length, EFX_DWORD_0, vpd_length);
+
+	/* Update the checksum */
+	cksum = 0;
+	for (pos = 0; pos < hdr_length; pos++)
+		cksum += ((uint8_t *)dcfg)[pos];
+	dcfg->csum.eb_u8[0] -= cksum;
+
+	/* Erase and write the new sector */
+	if ((rc = siena_nvram_partn_erase(enp, dcfg_partn, 0, partn_size)) != 0)
+		goto fail6;
+
+	/* Write out the new structure to nvram */
+	if ((rc = siena_nvram_partn_write(enp, dcfg_partn, 0, (caddr_t)dcfg,
+	    vpd_offset + vpd_length)) != 0)
+		goto fail7;
+
+	EFSYS_KMEM_FREE(enp->en_esip, dcfg_size, dcfg);
+
+	siena_nvram_partn_unlock(enp, dcfg_partn);
+
+	return (0);
+
+fail7:
+	EFSYS_PROBE(fail7);
+fail6:
+	EFSYS_PROBE(fail6);
+fail5:
+	EFSYS_PROBE(fail5);
+
+	EFSYS_KMEM_FREE(enp->en_esip, dcfg_size, dcfg);
+fail4:
+	EFSYS_PROBE(fail4);
+
+	siena_nvram_partn_unlock(enp, dcfg_partn);
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+				void
+siena_vpd_fini(
+	__in			efx_nic_t *enp)
+{
+	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
+
+	if (enp->en_u.siena.enu_svpd_length > 0) {
+		EFSYS_KMEM_FREE(enp->en_esip, enp->en_u.siena.enu_svpd_length,
+				enp->en_u.siena.enu_svpd);
+
+		enp->en_u.siena.enu_svpd = NULL;
+		enp->en_u.siena.enu_svpd_length = 0;
+	}
+}
+
+#endif	/* EFSYS_OPT_SIENA */
+
+#endif	/* EFSYS_OPT_VPD */