1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (c) 2012-2018 Solarflare Communications Inc.
16 #error "WITH_MCDI_V2 required for EF10 MCDIv2 commands."
20 __checkReturn efx_rc_t
23 __in const efx_mcdi_transport_t *emtp)
25 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
26 efsys_mem_t *esmp = emtp->emt_dma_mem;
30 EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
31 EFSYS_ASSERT(enp->en_features & EFX_FEATURE_MCDI_DMA);
34 * All EF10 firmware supports MCDIv2 and MCDIv1.
35 * Medford BootROM supports MCDIv2 and MCDIv1.
36 * Huntington BootROM supports MCDIv1 only.
38 emip->emi_max_version = 2;
40 /* A host DMA buffer is required for EF10 MCDI */
47 * Ensure that the MC doorbell is in a known state before issuing MCDI
48 * commands. The recovery algorithm requires that the MC command buffer
49 * must be 256 byte aligned. See bug24769.
51 if ((EFSYS_MEM_ADDR(esmp) & 0xFF) != 0) {
55 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 1);
56 EFX_BAR_WRITED(enp, ER_DZ_MC_DB_HWRD_REG, &dword, B_FALSE);
58 /* Save initial MC reboot status */
59 (void) ef10_mcdi_poll_reboot(enp);
61 /* Start a new epoch (allow fresh MCDI requests to succeed) */
62 efx_mcdi_new_epoch(enp);
69 EFSYS_PROBE1(fail1, efx_rc_t, rc);
78 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
80 emip->emi_new_epoch = B_FALSE;
84 * In older firmware all commands are processed in a single thread, so a long
85 * running command for one PCIe function can block processing for another
86 * function (see bug 61269).
88 * In newer firmware that supports multithreaded MCDI processing, we can extend
89 * the timeout for long-running requests which we know firmware may choose to
90 * process in a background thread.
92 #define EF10_MCDI_CMD_TIMEOUT_US (10 * 1000 * 1000)
93 #define EF10_MCDI_CMD_LONG_TIMEOUT_US (60 * 1000 * 1000)
96 ef10_mcdi_get_timeout(
98 __in efx_mcdi_req_t *emrp,
99 __out uint32_t *timeoutp)
101 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
103 switch (emrp->emr_cmd) {
104 case MC_CMD_POLL_BIST:
105 case MC_CMD_NVRAM_ERASE:
106 case MC_CMD_LICENSING_V3:
107 case MC_CMD_NVRAM_UPDATE_FINISH:
108 if (encp->enc_nvram_update_verify_result_supported != B_FALSE) {
110 * Potentially longer running commands, which firmware
111 * may choose to process in a background thread.
113 *timeoutp = EF10_MCDI_CMD_LONG_TIMEOUT_US;
118 *timeoutp = EF10_MCDI_CMD_TIMEOUT_US;
124 ef10_mcdi_send_request(
126 __in_bcount(hdr_len) void *hdrp,
128 __in_bcount(sdu_len) void *sdup,
131 const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
132 efsys_mem_t *esmp = emtp->emt_dma_mem;
136 EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
138 /* Write the header */
139 for (pos = 0; pos < hdr_len; pos += sizeof (efx_dword_t)) {
140 dword = *(efx_dword_t *)((uint8_t *)hdrp + pos);
141 EFSYS_MEM_WRITED(esmp, pos, &dword);
144 /* Write the payload */
145 for (pos = 0; pos < sdu_len; pos += sizeof (efx_dword_t)) {
146 dword = *(efx_dword_t *)((uint8_t *)sdup + pos);
147 EFSYS_MEM_WRITED(esmp, hdr_len + pos, &dword);
150 /* Guarantee ordering of memory (MCDI request) and PIO (MC doorbell) */
151 EFSYS_DMA_SYNC_FOR_DEVICE(esmp, 0, hdr_len + sdu_len);
152 EFSYS_PIO_WRITE_BARRIER();
154 /* Ring the doorbell to post the command DMA address to the MC */
155 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0,
156 EFSYS_MEM_ADDR(esmp) >> 32);
157 EFX_BAR_WRITED(enp, ER_DZ_MC_DB_LWRD_REG, &dword, B_FALSE);
159 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0,
160 EFSYS_MEM_ADDR(esmp) & 0xffffffff);
161 EFX_BAR_WRITED(enp, ER_DZ_MC_DB_HWRD_REG, &dword, B_FALSE);
164 __checkReturn boolean_t
165 ef10_mcdi_poll_response(
168 const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
169 efsys_mem_t *esmp = emtp->emt_dma_mem;
172 EFSYS_MEM_READD(esmp, 0, &hdr);
173 EFSYS_MEM_READ_BARRIER();
175 return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE);
179 ef10_mcdi_read_response(
181 __out_bcount(length) void *bufferp,
185 const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
186 efsys_mem_t *esmp = emtp->emt_dma_mem;
187 unsigned int pos = 0;
189 size_t remaining = length;
191 while (remaining > 0) {
192 size_t chunk = MIN(remaining, sizeof (data));
194 EFSYS_MEM_READD(esmp, offset + pos, &data);
195 memcpy((uint8_t *)bufferp + pos, &data, chunk);
202 ef10_mcdi_poll_reboot(
205 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
211 old_status = emip->emi_mc_reboot_status;
213 /* Update MC reboot status word */
214 EFX_BAR_TBL_READD(enp, ER_DZ_BIU_MC_SFT_STATUS_REG, 0, &dword, B_FALSE);
215 new_status = dword.ed_u32[0];
217 /* MC has rebooted if the value has changed */
218 if (new_status != old_status) {
219 emip->emi_mc_reboot_status = new_status;
222 * FIXME: Ignore detected MC REBOOT for now.
224 * The Siena support for checking for MC reboot from status
225 * flags is broken - see comments in siena_mcdi_poll_reboot().
226 * As the generic MCDI code is shared the EF10 reboot
227 * detection suffers similar problems.
229 * Do not report an error when the boot status changes until
230 * this can be handled by common code drivers (and reworked to
231 * support Siena too).
233 _NOTE(CONSTANTCONDITION)
243 EFSYS_PROBE1(fail1, efx_rc_t, rc);
248 __checkReturn efx_rc_t
249 ef10_mcdi_feature_supported(
251 __in efx_mcdi_feature_id_t id,
252 __out boolean_t *supportedp)
254 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
255 uint32_t privilege_mask = encp->enc_privilege_mask;
258 EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
261 * Use privilege mask state at MCDI attach.
265 case EFX_MCDI_FEATURE_FW_UPDATE:
267 * Admin privilege must be used prior to introduction of
271 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
273 case EFX_MCDI_FEATURE_LINK_CONTROL:
275 * Admin privilege used prior to introduction of
279 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, LINK) ||
280 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
282 case EFX_MCDI_FEATURE_MACADDR_CHANGE:
284 * Admin privilege must be used prior to introduction of
285 * mac spoofing privilege (at v4.6), which is used up to
286 * introduction of change mac spoofing privilege (at v4.7)
289 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, CHANGE_MAC) ||
290 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING) ||
291 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
293 case EFX_MCDI_FEATURE_MAC_SPOOFING:
295 * Admin privilege must be used prior to introduction of
296 * mac spoofing privilege (at v4.6), which is used up to
297 * introduction of mac spoofing TX privilege (at v4.7)
300 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING_TX) ||
301 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING) ||
302 EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
312 EFSYS_PROBE1(fail1, efx_rc_t, rc);
317 #endif /* EFSYS_OPT_MCDI */
319 #endif /* EFX_OPTS_EF10() */