svn commit: r311499 - stable/10/sys/dev/sfxge/common
Andrew Rybchenko
arybchik at FreeBSD.org
Fri Jan 6 07:37:07 UTC 2017
Author: arybchik
Date: Fri Jan 6 07:37:06 2017
New Revision: 311499
URL: https://svnweb.freebsd.org/changeset/base/311499
Log:
MFC r310815
sfxge(4): add functions to efx_bootcfg supporting whole partition access
Expose expcfg partition layout discovery and validating buffer copy
routines. Needed for whole-partition expcfg operations.
Submitted by: Richard Houldsworth <rhouldsworth at solarflare.com>
Sponsored by: Solarflare Communications, Inc.
Modified:
stable/10/sys/dev/sfxge/common/efx.h
stable/10/sys/dev/sfxge/common/efx_bootcfg.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/sfxge/common/efx.h
==============================================================================
--- stable/10/sys/dev/sfxge/common/efx.h Fri Jan 6 07:34:37 2017 (r311498)
+++ stable/10/sys/dev/sfxge/common/efx.h Fri Jan 6 07:37:06 2017 (r311499)
@@ -1422,6 +1422,29 @@ efx_nvram_fini(
#if EFSYS_OPT_BOOTCFG
+/* Report size and offset of bootcfg sector in NVRAM partition. */
+extern __checkReturn efx_rc_t
+efx_bootcfg_sector_info(
+ __in efx_nic_t *enp,
+ __in uint32_t pf,
+ __out_opt uint32_t *sector_countp,
+ __out size_t *offsetp,
+ __out size_t *max_sizep);
+
+/*
+ * Copy bootcfg sector data to a target buffer which may differ in size.
+ * Optionally corrects format errors in source buffer.
+ */
+extern efx_rc_t
+efx_bootcfg_copy_sector(
+ __in efx_nic_t *enp,
+ __inout_bcount(sector_length)
+ uint8_t *sector,
+ __in size_t sector_length,
+ __out_bcount(data_size) uint8_t *data,
+ __in size_t data_size,
+ __in boolean_t handle_format_errors);
+
extern efx_rc_t
efx_bootcfg_read(
__in efx_nic_t *enp,
Modified: stable/10/sys/dev/sfxge/common/efx_bootcfg.c
==============================================================================
--- stable/10/sys/dev/sfxge/common/efx_bootcfg.c Fri Jan 6 07:34:37 2017 (r311498)
+++ stable/10/sys/dev/sfxge/common/efx_bootcfg.c Fri Jan 6 07:37:06 2017 (r311499)
@@ -42,17 +42,24 @@ __FBSDID("$FreeBSD$");
*/
#define BOOTCFG_MAX_SIZE 0x1000
+/* Medford per-PF bootcfg sector */
+#define BOOTCFG_PER_PF 0x800
+#define BOOTCFG_PF_COUNT 16
+
#define DHCP_END ((uint8_t)0xff)
#define DHCP_PAD ((uint8_t)0)
-/* Report size and offset of bootcfg sector in NVRAM partition. */
-static __checkReturn efx_rc_t
-efx_bootcfg_sector(
+/* Report the layout of bootcfg sectors in NVRAM partition. */
+ __checkReturn efx_rc_t
+efx_bootcfg_sector_info(
__in efx_nic_t *enp,
+ __in uint32_t pf,
+ __out_opt uint32_t *sector_countp,
__out size_t *offsetp,
__out size_t *max_sizep)
{
+ uint32_t count;
size_t max_size;
size_t offset;
int rc;
@@ -62,6 +69,7 @@ efx_bootcfg_sector(
case EFX_FAMILY_SIENA:
max_size = BOOTCFG_MAX_SIZE;
offset = 0;
+ count = 1;
break;
#endif /* EFSYS_OPT_SIENA */
@@ -69,16 +77,20 @@ efx_bootcfg_sector(
case EFX_FAMILY_HUNTINGTON:
max_size = BOOTCFG_MAX_SIZE;
offset = 0;
+ count = 1;
break;
#endif /* EFSYS_OPT_HUNTINGTON */
#if EFSYS_OPT_MEDFORD
case EFX_FAMILY_MEDFORD: {
- efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
-
/* Shared partition (array indexed by PF) */
- max_size = 0x0800;
- offset = max_size * encp->enc_pf;
+ max_size = BOOTCFG_PER_PF;
+ count = BOOTCFG_PF_COUNT;
+ if (pf >= count) {
+ rc = EINVAL;
+ goto fail2;
+ }
+ offset = max_size * pf;
break;
}
#endif /* EFSYS_OPT_MEDFORD */
@@ -90,11 +102,17 @@ efx_bootcfg_sector(
}
EFSYS_ASSERT3U(max_size, <=, BOOTCFG_MAX_SIZE);
+ if (sector_countp != NULL)
+ *sector_countp = count;
*offsetp = offset;
*max_sizep = max_size;
return (0);
+#if EFSYS_OPT_MEDFORD
+fail2:
+ EFSYS_PROBE(fail2);
+#endif
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
@@ -104,7 +122,7 @@ fail1:
static __checkReturn uint8_t
efx_bootcfg_csum(
__in efx_nic_t *enp,
- __in_bcount(size) caddr_t data,
+ __in_bcount(size) uint8_t const *data,
__in size_t size)
{
_NOTE(ARGUNUSED(enp))
@@ -120,7 +138,7 @@ efx_bootcfg_csum(
static __checkReturn efx_rc_t
efx_bootcfg_verify(
__in efx_nic_t *enp,
- __in_bcount(size) caddr_t data,
+ __in_bcount(size) uint8_t const *data,
__in size_t size,
__out_opt size_t *usedp)
{
@@ -183,6 +201,95 @@ fail1:
return (rc);
}
+/*
+ * Copy bootcfg sector data to a target buffer which may differ in size.
+ * Optionally corrects format errors in source buffer.
+ */
+ efx_rc_t
+efx_bootcfg_copy_sector(
+ __in efx_nic_t *enp,
+ __inout_bcount(sector_length)
+ uint8_t *sector,
+ __in size_t sector_length,
+ __out_bcount(data_size) uint8_t *data,
+ __in size_t data_size,
+ __in boolean_t handle_format_errors)
+{
+ size_t used_bytes;
+ efx_rc_t rc;
+
+ /* Verify that the area is correctly formatted and checksummed */
+ rc = efx_bootcfg_verify(enp, sector, sector_length,
+ &used_bytes);
+
+ if (!handle_format_errors) {
+ if (rc != 0)
+ goto fail1;
+
+ if ((used_bytes < 2) ||
+ (sector[used_bytes - 1] != DHCP_END)) {
+ /* Block too short, or DHCP_END missing */
+ rc = ENOENT;
+ goto fail2;
+ }
+ }
+
+ /* Synthesize empty format on verification failure */
+ if (rc != 0 || used_bytes == 0) {
+ sector[0] = 0;
+ sector[1] = DHCP_END;
+ used_bytes = 2;
+ }
+ EFSYS_ASSERT(used_bytes >= 2); /* checksum and DHCP_END */
+ EFSYS_ASSERT(used_bytes <= sector_length);
+ EFSYS_ASSERT(sector_length >= 2);
+
+ /*
+ * Legacy bootcfg sectors don't terminate with a DHCP_END character.
+ * Modify the returned payload so it does.
+ * Reinitialise the sector if there isn't room for the character.
+ */
+ if (sector[used_bytes - 1] != DHCP_END) {
+ if (used_bytes >= sector_length) {
+ sector[0] = 0;
+ used_bytes = 1;
+ }
+ sector[used_bytes] = DHCP_END;
+ ++used_bytes;
+ }
+
+ /*
+ * Verify that the target buffer is large enough for the
+ * entire used bootcfg area, then copy into the target buffer.
+ */
+ if (used_bytes > data_size) {
+ rc = ENOSPC;
+ goto fail3;
+ }
+ memcpy(data, sector, used_bytes);
+
+ /* Zero out the unused portion of the target buffer */
+ if (used_bytes < data_size)
+ (void) memset(data + used_bytes, 0, data_size - used_bytes);
+
+ /*
+ * The checksum includes trailing data after any DHCP_END character,
+ * which we've just modified (by truncation or appending DHCP_END).
+ */
+ data[0] -= efx_bootcfg_csum(enp, data, data_size);
+
+ return (0);
+
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
efx_rc_t
efx_bootcfg_read(
__in efx_nic_t *enp,
@@ -195,13 +302,20 @@ efx_bootcfg_read(
size_t sector_length;
size_t sector_offset;
efx_rc_t rc;
+ uint32_t sector_number;
+#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
+ sector_number = enp->en_nic_cfg.enc_pf;
+#else
+ sector_number = 0;
+#endif
rc = efx_nvram_size(enp, EFX_NVRAM_BOOTROM_CFG, &partn_length);
if (rc != 0)
goto fail1;
/* The bootcfg sector may be stored in a (larger) shared partition */
- rc = efx_bootcfg_sector(enp, §or_offset, §or_length);
+ rc = efx_bootcfg_sector_info(enp, sector_number,
+ NULL, §or_offset, §or_length);
if (rc != 0)
goto fail2;
@@ -232,17 +346,18 @@ efx_bootcfg_read(
if ((rc = efx_nvram_rw_start(enp, EFX_NVRAM_BOOTROM_CFG, NULL)) != 0)
goto fail5;
- rc = efx_nvram_read_chunk(enp, EFX_NVRAM_BOOTROM_CFG, sector_offset,
- (caddr_t)payload, sector_length);
-
- efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG);
-
- if (rc != 0)
+ if ((rc = efx_nvram_read_chunk(enp, EFX_NVRAM_BOOTROM_CFG,
+ sector_offset, (caddr_t)payload, sector_length)) != 0) {
+ (void) efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG);
goto fail6;
+ }
+
+ if ((rc = efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG)) != 0)
+ goto fail7;
/* Verify that the area is correctly formatted and checksummed */
rc = efx_bootcfg_verify(enp, (caddr_t)payload, sector_length,
- &used_bytes);
+ &used_bytes);
if (rc != 0 || used_bytes == 0) {
payload[0] = (uint8_t)~DHCP_END;
payload[1] = DHCP_END;
@@ -274,7 +389,7 @@ efx_bootcfg_read(
*/
if (used_bytes > size) {
rc = ENOSPC;
- goto fail7;
+ goto fail8;
}
if (sector_length > size) {
memcpy(data, payload, used_bytes);
@@ -293,6 +408,8 @@ efx_bootcfg_read(
return (0);
+fail8:
+ EFSYS_PROBE(fail8);
fail7:
EFSYS_PROBE(fail7);
fail6:
@@ -326,13 +443,21 @@ efx_bootcfg_write(
size_t sector_offset;
size_t used_bytes;
efx_rc_t rc;
+ uint32_t sector_number;
+
+#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
+ sector_number = enp->en_nic_cfg.enc_pf;
+#else
+ sector_number = 0;
+#endif
rc = efx_nvram_size(enp, EFX_NVRAM_BOOTROM_CFG, &partn_length);
if (rc != 0)
goto fail1;
/* The bootcfg sector may be stored in a (larger) shared partition */
- rc = efx_bootcfg_sector(enp, §or_offset, §or_length);
+ rc = efx_bootcfg_sector_info(enp, sector_number,
+ NULL, §or_offset, §or_length);
if (rc != 0)
goto fail2;
@@ -396,16 +521,18 @@ efx_bootcfg_write(
goto fail10;
if ((rc = efx_nvram_write_chunk(enp, EFX_NVRAM_BOOTROM_CFG,
- 0, partn_data, partn_length)) != 0) {
+ 0, (caddr_t)partn_data, partn_length)) != 0)
goto fail11;
- }
- efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG);
+ if ((rc = efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG)) != 0)
+ goto fail12;
EFSYS_KMEM_FREE(enp->en_esip, partn_length, partn_data);
return (0);
+fail12:
+ EFSYS_PROBE(fail12);
fail11:
EFSYS_PROBE(fail11);
fail10:
@@ -413,7 +540,7 @@ fail10:
fail9:
EFSYS_PROBE(fail9);
- efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG);
+ (void) efx_nvram_rw_finish(enp, EFX_NVRAM_BOOTROM_CFG);
fail8:
EFSYS_PROBE(fail8);
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