diff options
Diffstat (limited to 'drivers/net/sfc/base/efx_sram.c')
| -rw-r--r-- | drivers/net/sfc/base/efx_sram.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/drivers/net/sfc/base/efx_sram.c b/drivers/net/sfc/base/efx_sram.c new file mode 100644 index 00000000..5f4edea7 --- /dev/null +++ b/drivers/net/sfc/base/efx_sram.c @@ -0,0 +1,331 @@ +/* + * 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 "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 + if (enp->en_family == EFX_FAMILY_HUNTINGTON || + enp->en_family == EFX_FAMILY_MEDFORD) { + /* + * 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 */ + + 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 + if (enp->en_family == EFX_FAMILY_HUNTINGTON || + enp->en_family == EFX_FAMILY_MEDFORD) { + /* + * 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_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 */ |