efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
uint32_t irq;
efx_rc_t rc;
+ boolean_t low_latency;
_NOTE(ARGUNUSED(id)) /* buftbl id managed by MC */
* created. See bug58606.
*/
- if (encp->enc_init_evq_v2_supported) {
- /*
- * On Medford the low latency license is required to enable RX
- * and event cut through and to disable RX batching. If event
- * queue type in flags is auto, we let the firmware decide the
- * settings to use. If the adapter has a low latency license,
- * it will choose the best settings for low latency, otherwise
- * it will choose the best settings for throughput.
- */
- rc = efx_mcdi_init_evq_v2(enp, index, esmp, ndescs, irq, us,
- flags);
- if (rc != 0)
- goto fail2;
- } else {
- /*
- * On Huntington we need to specify the settings to use.
- * If event queue type in flags is auto, we favour throughput
- * if the adapter is running virtualization supporting firmware
- * (i.e. the full featured firmware variant)
- * and latency otherwise. The Ethernet Virtual Bridging
- * capability is used to make this decision. (Note though that
- * the low latency firmware variant is also best for
- * throughput and corresponding type should be specified
- * to choose it.)
- */
- boolean_t low_latency = encp->enc_datapath_cap_evb ? 0 : 1;
- rc = efx_mcdi_init_evq(enp, index, esmp, ndescs, irq, us, flags,
- low_latency);
- if (rc != 0)
- goto fail3;
- }
+ /*
+ * On Huntington we need to specify the settings to use.
+ * If event queue type in flags is auto, we favour throughput
+ * if the adapter is running virtualization supporting firmware
+ * (i.e. the full featured firmware variant)
+ * and latency otherwise. The Ethernet Virtual Bridging
+ * capability is used to make this decision. (Note though that
+ * the low latency firmware variant is also best for
+ * throughput and corresponding type should be specified
+ * to choose it.)
+ *
+ * If FW supports EvQ types (e.g. on Medford and Medford2) the
+ * type which is specified in flags is passed to FW to make the
+ * decision and low_latency hint is ignored.
+ */
+ low_latency = encp->enc_datapath_cap_evb ? 0 : 1;
+ rc = efx_mcdi_init_evq(enp, index, esmp, ndescs, irq, us, flags,
+ low_latency);
+ if (rc != 0)
+ goto fail2;
return (0);
-fail3:
- EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
__in uint32_t flags,
__in boolean_t low_latency)
{
+ const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
efx_mcdi_req_t req;
EFX_MCDI_DECLARE_BUF(payload,
MC_CMD_INIT_EVQ_V2_IN_LEN(EF10_EVQ_MAXNBUFS),
MC_CMD_INIT_EVQ_V2_OUT_LEN);
- efx_qword_t *dma_addr;
- uint64_t addr;
- int npages;
- int i;
boolean_t interrupting;
int ev_cut_through;
- efx_rc_t rc;
-
- npages = efx_evq_nbufs(enp, nevs);
- if (npages > EF10_EVQ_MAXNBUFS) {
- rc = EINVAL;
- goto fail1;
- }
-
- req.emr_cmd = MC_CMD_INIT_EVQ;
- req.emr_in_buf = payload;
- req.emr_in_length = MC_CMD_INIT_EVQ_V2_IN_LEN(npages);
- req.emr_out_buf = payload;
- req.emr_out_length = MC_CMD_INIT_EVQ_V2_OUT_LEN;
-
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_SIZE, nevs);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_INSTANCE, instance);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_IRQ_NUM, irq);
-
- interrupting = ((flags & EFX_EVQ_FLAGS_NOTIFY_MASK) ==
- EFX_EVQ_FLAGS_NOTIFY_INTERRUPT);
-
- /*
- * On Huntington RX and TX event batching can only be requested together
- * (even if the datapath firmware doesn't actually support RX
- * batching). If event cut through is enabled no RX batching will occur.
- *
- * So always enable RX and TX event batching, and enable event cut
- * through if we want low latency operation.
- */
- switch (flags & EFX_EVQ_FLAGS_TYPE_MASK) {
- case EFX_EVQ_FLAGS_TYPE_AUTO:
- ev_cut_through = low_latency ? 1 : 0;
- break;
- case EFX_EVQ_FLAGS_TYPE_THROUGHPUT:
- ev_cut_through = 0;
- break;
- case EFX_EVQ_FLAGS_TYPE_LOW_LATENCY:
- ev_cut_through = 1;
- break;
- default:
- rc = EINVAL;
- goto fail2;
- }
- MCDI_IN_POPULATE_DWORD_6(req, INIT_EVQ_V2_IN_FLAGS,
- INIT_EVQ_V2_IN_FLAG_INTERRUPTING, interrupting,
- INIT_EVQ_V2_IN_FLAG_RPTR_DOS, 0,
- INIT_EVQ_V2_IN_FLAG_INT_ARMD, 0,
- INIT_EVQ_V2_IN_FLAG_CUT_THRU, ev_cut_through,
- INIT_EVQ_V2_IN_FLAG_RX_MERGE, 1,
- INIT_EVQ_V2_IN_FLAG_TX_MERGE, 1);
-
- /* If the value is zero then disable the timer */
- if (us == 0) {
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_MODE,
- MC_CMD_INIT_EVQ_V2_IN_TMR_MODE_DIS);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_LOAD, 0);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_RELOAD, 0);
- } else {
- unsigned int ticks;
-
- if ((rc = efx_ev_usecs_to_ticks(enp, us, &ticks)) != 0)
- goto fail3;
-
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_MODE,
- MC_CMD_INIT_EVQ_V2_IN_TMR_INT_HLDOFF);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_LOAD, ticks);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_TMR_RELOAD, ticks);
- }
-
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_COUNT_MODE,
- MC_CMD_INIT_EVQ_V2_IN_COUNT_MODE_DIS);
- MCDI_IN_SET_DWORD(req, INIT_EVQ_V2_IN_COUNT_THRSHLD, 0);
-
- dma_addr = MCDI_IN2(req, efx_qword_t, INIT_EVQ_V2_IN_DMA_ADDR);
- addr = EFSYS_MEM_ADDR(esmp);
-
- for (i = 0; i < npages; i++) {
- EFX_POPULATE_QWORD_2(*dma_addr,
- EFX_DWORD_1, (uint32_t)(addr >> 32),
- EFX_DWORD_0, (uint32_t)(addr & 0xffffffff));
-
- dma_addr++;
- addr += EFX_BUF_SIZE;
- }
-
- efx_mcdi_execute(enp, &req);
-
- if (req.emr_rc != 0) {
- rc = req.emr_rc;
- goto fail4;
- }
-
- if (req.emr_out_length_used < MC_CMD_INIT_EVQ_OUT_LEN) {
- rc = EMSGSIZE;
- goto fail5;
- }
-
- /* NOTE: ignore the returned IRQ param as firmware does not set it. */
-
- return (0);
-
-fail5:
- EFSYS_PROBE(fail5);
-fail4:
- EFSYS_PROBE(fail4);
-fail3:
- EFSYS_PROBE(fail3);
-fail2:
- EFSYS_PROBE(fail2);
-fail1:
- EFSYS_PROBE1(fail1, efx_rc_t, rc);
-
- return (rc);
-}
-
- __checkReturn efx_rc_t
-efx_mcdi_init_evq_v2(
- __in efx_nic_t *enp,
- __in unsigned int instance,
- __in efsys_mem_t *esmp,
- __in size_t nevs,
- __in uint32_t irq,
- __in uint32_t us,
- __in uint32_t flags)
-{
- efx_mcdi_req_t req;
- EFX_MCDI_DECLARE_BUF(payload,
- MC_CMD_INIT_EVQ_V2_IN_LEN(EF10_EVQ_MAXNBUFS),
- MC_CMD_INIT_EVQ_V2_OUT_LEN);
- boolean_t interrupting;
+ int ev_merge;
unsigned int evq_type;
efx_qword_t *dma_addr;
uint64_t addr;
interrupting = ((flags & EFX_EVQ_FLAGS_NOTIFY_MASK) ==
EFX_EVQ_FLAGS_NOTIFY_INTERRUPT);
- switch (flags & EFX_EVQ_FLAGS_TYPE_MASK) {
- case EFX_EVQ_FLAGS_TYPE_AUTO:
- evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_AUTO;
- break;
- case EFX_EVQ_FLAGS_TYPE_THROUGHPUT:
- evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_THROUGHPUT;
- break;
- case EFX_EVQ_FLAGS_TYPE_LOW_LATENCY:
- evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_LOW_LATENCY;
- break;
- default:
- rc = EINVAL;
- goto fail2;
+ if (encp->enc_init_evq_v2_supported) {
+ /*
+ * On Medford the low latency license is required to enable RX
+ * and event cut through and to disable RX batching. If event
+ * queue type in flags is auto, we let the firmware decide the
+ * settings to use. If the adapter has a low latency license,
+ * it will choose the best settings for low latency, otherwise
+ * it will choose the best settings for throughput.
+ */
+ switch (flags & EFX_EVQ_FLAGS_TYPE_MASK) {
+ case EFX_EVQ_FLAGS_TYPE_AUTO:
+ evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_AUTO;
+ break;
+ case EFX_EVQ_FLAGS_TYPE_THROUGHPUT:
+ evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_THROUGHPUT;
+ break;
+ case EFX_EVQ_FLAGS_TYPE_LOW_LATENCY:
+ evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_LOW_LATENCY;
+ break;
+ default:
+ rc = EINVAL;
+ goto fail2;
+ }
+ /* EvQ type controls merging, no manual settings */
+ ev_merge = 0;
+ ev_cut_through = 0;
+ } else {
+ /* EvQ types other than manual are not supported */
+ evq_type = MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_MANUAL;
+ /*
+ * On Huntington RX and TX event batching can only be requested
+ * together (even if the datapath firmware doesn't actually
+ * support RX batching). If event cut through is enabled no RX
+ * batching will occur.
+ *
+ * So always enable RX and TX event batching, and enable event
+ * cut through if we want low latency operation.
+ */
+ ev_merge = 1;
+ switch (flags & EFX_EVQ_FLAGS_TYPE_MASK) {
+ case EFX_EVQ_FLAGS_TYPE_AUTO:
+ ev_cut_through = low_latency ? 1 : 0;
+ break;
+ case EFX_EVQ_FLAGS_TYPE_THROUGHPUT:
+ ev_cut_through = 0;
+ break;
+ case EFX_EVQ_FLAGS_TYPE_LOW_LATENCY:
+ ev_cut_through = 1;
+ break;
+ default:
+ rc = EINVAL;
+ goto fail2;
+ }
}
- MCDI_IN_POPULATE_DWORD_4(req, INIT_EVQ_V2_IN_FLAGS,
+
+ MCDI_IN_POPULATE_DWORD_7(req, INIT_EVQ_V2_IN_FLAGS,
INIT_EVQ_V2_IN_FLAG_INTERRUPTING, interrupting,
INIT_EVQ_V2_IN_FLAG_RPTR_DOS, 0,
INIT_EVQ_V2_IN_FLAG_INT_ARMD, 0,
+ INIT_EVQ_V2_IN_FLAG_CUT_THRU, ev_cut_through,
+ INIT_EVQ_V2_IN_FLAG_RX_MERGE, ev_merge,
+ INIT_EVQ_V2_IN_FLAG_TX_MERGE, ev_merge,
INIT_EVQ_V2_IN_FLAG_TYPE, evq_type);
/* If the value is zero then disable the timer */
goto fail4;
}
- if (req.emr_out_length_used < MC_CMD_INIT_EVQ_V2_OUT_LEN) {
- rc = EMSGSIZE;
- goto fail5;
+ if (encp->enc_init_evq_v2_supported) {
+ if (req.emr_out_length_used < MC_CMD_INIT_EVQ_V2_OUT_LEN) {
+ rc = EMSGSIZE;
+ goto fail5;
+ }
+ EFSYS_PROBE1(mcdi_evq_flags, uint32_t,
+ MCDI_OUT_DWORD(req, INIT_EVQ_V2_OUT_FLAGS));
+ } else {
+ if (req.emr_out_length_used < MC_CMD_INIT_EVQ_OUT_LEN) {
+ rc = EMSGSIZE;
+ goto fail6;
+ }
}
/* NOTE: ignore the returned IRQ param as firmware does not set it. */
- EFSYS_PROBE1(mcdi_evq_flags, uint32_t,
- MCDI_OUT_DWORD(req, INIT_EVQ_V2_OUT_FLAGS));
-
return (0);
+fail6:
+ EFSYS_PROBE(fail6);
fail5:
EFSYS_PROBE(fail5);
fail4:
git.droids-corp.org / dpdk.git / commitdiff