freebsd-nq/sys/dev/sfxge/common/efx_sram.c
2020-09-01 21:29:01 +00:00

338 lines
8.8 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2007-2016 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "efx.h"
#include "efx_impl.h"
__checkReturn efx_rc_t
efx_sram_buf_tbl_set(
__in efx_nic_t *enp,
__in uint32_t id,
__in efsys_mem_t *esmp,
__in size_t n)
{
efx_qword_t qword;
uint32_t start = id;
uint32_t stop = start + n;
efsys_dma_addr_t addr;
efx_oword_t oword;
unsigned int count;
efx_rc_t rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
if (enp->en_family == EFX_FAMILY_HUNTINGTON ||
enp->en_family == EFX_FAMILY_MEDFORD ||
enp->en_family == EFX_FAMILY_MEDFORD2) {
/*
* FIXME: the efx_sram_buf_tbl_*() functionality needs to be
* pulled inside the Falcon/Siena queue create/destroy code,
* and then the original functions can be removed (see bug30834
* comment #1). But, for now, we just ensure that they are
* no-ops for EF10, to allow bringing up existing drivers
* without modification.
*/
return (0);
}
#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
if (stop >= EFX_BUF_TBL_SIZE) {
rc = EFBIG;
goto fail1;
}
/* Add the entries into the buffer table */
addr = EFSYS_MEM_ADDR(esmp);
for (id = start; id != stop; id++) {
EFX_POPULATE_QWORD_5(qword,
FRF_AZ_IP_DAT_BUF_SIZE, 0, FRF_AZ_BUF_ADR_REGION, 0,
FRF_AZ_BUF_ADR_FBUF_DW0,
(uint32_t)((addr >> 12) & 0xffffffff),
FRF_AZ_BUF_ADR_FBUF_DW1,
(uint32_t)((addr >> 12) >> 32),
FRF_AZ_BUF_OWNER_ID_FBUF, 0);
EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_FULL_TBL,
id, &qword);
addr += EFX_BUF_SIZE;
}
EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
/* Flush the write buffer */
EFX_POPULATE_OWORD_2(oword, FRF_AZ_BUF_UPD_CMD, 1,
FRF_AZ_BUF_CLR_CMD, 0);
EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
/* Poll for the last entry being written to the buffer table */
EFSYS_ASSERT3U(id, ==, stop);
addr -= EFX_BUF_SIZE;
count = 0;
do {
EFSYS_PROBE1(wait, unsigned int, count);
/* Spin for 1 ms */
EFSYS_SPIN(1000);
EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
id - 1, &qword);
if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) ==
(uint32_t)((addr >> 12) & 0xffffffff) &&
EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) ==
(uint32_t)((addr >> 12) >> 32))
goto verify;
} while (++count < 100);
rc = ETIMEDOUT;
goto fail2;
verify:
/* Verify the rest of the entries in the buffer table */
while (--id != start) {
addr -= EFX_BUF_SIZE;
/* Read the buffer table entry */
EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
id - 1, &qword);
if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) !=
(uint32_t)((addr >> 12) & 0xffffffff) ||
EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) !=
(uint32_t)((addr >> 12) >> 32)) {
rc = EFAULT;
goto fail3;
}
}
return (0);
fail3:
EFSYS_PROBE(fail3);
id = stop;
fail2:
EFSYS_PROBE(fail2);
EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, id - 1,
FRF_AZ_BUF_CLR_START_ID, start);
EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
void
efx_sram_buf_tbl_clear(
__in efx_nic_t *enp,
__in uint32_t id,
__in size_t n)
{
efx_oword_t oword;
uint32_t start = id;
uint32_t stop = start + n;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
if (enp->en_family == EFX_FAMILY_HUNTINGTON ||
enp->en_family == EFX_FAMILY_MEDFORD ||
enp->en_family == EFX_FAMILY_MEDFORD2) {
/*
* FIXME: the efx_sram_buf_tbl_*() functionality needs to be
* pulled inside the Falcon/Siena queue create/destroy code,
* and then the original functions can be removed (see bug30834
* comment #1). But, for now, we just ensure that they are
* no-ops for EF10, to allow bringing up existing drivers
* without modification.
*/
return;
}
#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
EFSYS_ASSERT3U(stop, <, EFX_BUF_TBL_SIZE);
EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, stop - 1,
FRF_AZ_BUF_CLR_START_ID, start);
EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
}
#if EFSYS_OPT_DIAG
static void
efx_sram_byte_increment_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
unsigned int index;
_NOTE(ARGUNUSED(negate))
for (index = 0; index < sizeof (efx_qword_t); index++)
eqp->eq_u8[index] = offset + index;
}
static void
efx_sram_all_the_same_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
_NOTE(ARGUNUSED(row))
if (negate)
EFX_SET_QWORD(*eqp);
else
EFX_ZERO_QWORD(*eqp);
}
static void
efx_sram_bit_alternate_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
_NOTE(ARGUNUSED(row))
EFX_POPULATE_QWORD_2(*eqp,
EFX_DWORD_0, (negate) ? 0x55555555 : 0xaaaaaaaa,
EFX_DWORD_1, (negate) ? 0x55555555 : 0xaaaaaaaa);
}
static void
efx_sram_byte_alternate_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
_NOTE(ARGUNUSED(row))
EFX_POPULATE_QWORD_2(*eqp,
EFX_DWORD_0, (negate) ? 0x00ff00ff : 0xff00ff00,
EFX_DWORD_1, (negate) ? 0x00ff00ff : 0xff00ff00);
}
static void
efx_sram_byte_changing_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
unsigned int index;
for (index = 0; index < sizeof (efx_qword_t); index++) {
uint8_t byte;
if (offset / 256 == 0)
byte = (uint8_t)((offset % 257) % 256);
else
byte = (uint8_t)(~((offset - 8) % 257) % 256);
eqp->eq_u8[index] = (negate) ? ~byte : byte;
}
}
static void
efx_sram_bit_sweep_set(
__in size_t row,
__in boolean_t negate,
__out efx_qword_t *eqp)
{
size_t offset = row * FR_AZ_SRM_DBG_REG_STEP;
if (negate) {
EFX_SET_QWORD(*eqp);
EFX_CLEAR_QWORD_BIT(*eqp, (offset / sizeof (efx_qword_t)) % 64);
} else {
EFX_ZERO_QWORD(*eqp);
EFX_SET_QWORD_BIT(*eqp, (offset / sizeof (efx_qword_t)) % 64);
}
}
efx_sram_pattern_fn_t __efx_sram_pattern_fns[] = {
efx_sram_byte_increment_set,
efx_sram_all_the_same_set,
efx_sram_bit_alternate_set,
efx_sram_byte_alternate_set,
efx_sram_byte_changing_set,
efx_sram_bit_sweep_set
};
__checkReturn efx_rc_t
efx_sram_test(
__in efx_nic_t *enp,
__in efx_pattern_type_t type)
{
efx_sram_pattern_fn_t func;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_RX));
EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_TX));
EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_EV));
/* SRAM testing is only available on Siena. */
if (enp->en_family != EFX_FAMILY_SIENA)
return (0);
/* Select pattern generator */
EFSYS_ASSERT3U(type, <, EFX_PATTERN_NTYPES);
func = __efx_sram_pattern_fns[type];
return (siena_sram_test(enp, func));
}
#endif /* EFSYS_OPT_DIAG */