--- /dev/null
+/*
+ * 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 (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);
+
+ 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);
+}
+
+
git.droids-corp.org / dpdk.git / blobdiff