2 * Copyright (c) 2007-2016 Solarflare Communications Inc.
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9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
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14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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34 __checkReturn efx_rc_t
38 __in efsys_mem_t *esmp,
43 uint32_t stop = start + n;
44 efsys_dma_addr_t addr;
49 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
50 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
52 if (stop >= EFX_BUF_TBL_SIZE) {
57 /* Add the entries into the buffer table */
58 addr = EFSYS_MEM_ADDR(esmp);
59 for (id = start; id != stop; id++) {
60 EFX_POPULATE_QWORD_5(qword,
61 FRF_AZ_IP_DAT_BUF_SIZE, 0, FRF_AZ_BUF_ADR_REGION, 0,
62 FRF_AZ_BUF_ADR_FBUF_DW0,
63 (uint32_t)((addr >> 12) & 0xffffffff),
64 FRF_AZ_BUF_ADR_FBUF_DW1,
65 (uint32_t)((addr >> 12) >> 32),
66 FRF_AZ_BUF_OWNER_ID_FBUF, 0);
68 EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_FULL_TBL,
74 EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
76 /* Flush the write buffer */
77 EFX_POPULATE_OWORD_2(oword, FRF_AZ_BUF_UPD_CMD, 1,
78 FRF_AZ_BUF_CLR_CMD, 0);
79 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
81 /* Poll for the last entry being written to the buffer table */
82 EFSYS_ASSERT3U(id, ==, stop);
87 EFSYS_PROBE1(wait, unsigned int, count);
92 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
95 if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) ==
96 (uint32_t)((addr >> 12) & 0xffffffff) &&
97 EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) ==
98 (uint32_t)((addr >> 12) >> 32))
101 } while (++count < 100);
107 /* Verify the rest of the entries in the buffer table */
108 while (--id != start) {
109 addr -= EFX_BUF_SIZE;
111 /* Read the buffer table entry */
112 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_FULL_TBL,
115 if (EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW0) !=
116 (uint32_t)((addr >> 12) & 0xffffffff) ||
117 EFX_QWORD_FIELD(qword, FRF_AZ_BUF_ADR_FBUF_DW1) !=
118 (uint32_t)((addr >> 12) >> 32)) {
134 EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
135 FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, id - 1,
136 FRF_AZ_BUF_CLR_START_ID, start);
137 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);
140 EFSYS_PROBE1(fail1, efx_rc_t, rc);
146 efx_sram_buf_tbl_clear(
153 uint32_t stop = start + n;
155 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
156 EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
158 EFSYS_ASSERT3U(stop, <, EFX_BUF_TBL_SIZE);
160 EFSYS_PROBE2(buf, uint32_t, start, uint32_t, stop - 1);
162 EFX_POPULATE_OWORD_4(oword, FRF_AZ_BUF_UPD_CMD, 0,
163 FRF_AZ_BUF_CLR_CMD, 1, FRF_AZ_BUF_CLR_END_ID, stop - 1,
164 FRF_AZ_BUF_CLR_START_ID, start);
165 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_UPD_REG, &oword);