Commit 4438b587 authored by Alex Maftei (amaftei)'s avatar Alex Maftei (amaftei) Committed by David S. Miller
Browse files

sfc: move MCDI event queue management code 



A function was split, the others were renamed.

Code style fixes included.

Signed-off-by: default avatarAlexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 37a5f9dc

drivers/net/ethernet/sfc/ef10.c

+13 −104
Original line number Diff line number Diff line
@@ -3199,106 +3199,20 @@ efx_ef10_rx_defer_refill_complete(struct efx_nic *efx, unsigned long cookie, 
	/* nothing to do */

}



static int efx_ef10_ev_probe(struct efx_channel *channel)

{

	return efx_nic_alloc_buffer(channel->efx, &channel->eventq.buf,

				    (channel->eventq_mask + 1) *

				    sizeof(efx_qword_t),

				    GFP_KERNEL);

}



static void efx_ef10_ev_fini(struct efx_channel *channel)

{

	MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_EVQ_IN_LEN);

	MCDI_DECLARE_BUF_ERR(outbuf);

	struct efx_nic *efx = channel->efx;

	size_t outlen;

	int rc;



	MCDI_SET_DWORD(inbuf, FINI_EVQ_IN_INSTANCE, channel->channel);



	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FINI_EVQ, inbuf, sizeof(inbuf),

			  outbuf, sizeof(outbuf), &outlen);



	if (rc && rc != -EALREADY)

		goto fail;



	return;



fail:

	efx_mcdi_display_error(efx, MC_CMD_FINI_EVQ, MC_CMD_FINI_EVQ_IN_LEN,

			       outbuf, outlen, rc);

}



static int efx_ef10_ev_init(struct efx_channel *channel)

{

	MCDI_DECLARE_BUF(inbuf,

			 MC_CMD_INIT_EVQ_V2_IN_LEN(EFX_MAX_EVQ_SIZE * 8 /

						   EFX_BUF_SIZE));

	MCDI_DECLARE_BUF(outbuf, MC_CMD_INIT_EVQ_V2_OUT_LEN);

	size_t entries = channel->eventq.buf.len / EFX_BUF_SIZE;

	struct efx_nic *efx = channel->efx;

	struct efx_ef10_nic_data *nic_data;

	size_t inlen, outlen;

	unsigned int enabled, implemented;

	dma_addr_t dma_addr;

	bool use_v2, cut_thru;

	int rc;

	int i;



	nic_data = efx->nic_data;



	/* Fill event queue with all ones (i.e. empty events) */

	memset(channel->eventq.buf.addr, 0xff, channel->eventq.buf.len);



	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_SIZE, channel->eventq_mask + 1);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_INSTANCE, channel->channel);

	/* INIT_EVQ expects index in vector table, not absolute */

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_IRQ_NUM, channel->channel);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_MODE,

		       MC_CMD_INIT_EVQ_IN_TMR_MODE_DIS);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_LOAD, 0);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_RELOAD, 0);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_MODE,

		       MC_CMD_INIT_EVQ_IN_COUNT_MODE_DIS);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_THRSHLD, 0);



	if (nic_data->datapath_caps2 &

	    1 << MC_CMD_GET_CAPABILITIES_V2_OUT_INIT_EVQ_V2_LBN) {

		/* Use the new generic approach to specifying event queue

		 * configuration, requesting lower latency or higher throughput.

		 * The options that actually get used appear in the output.

		 */

		MCDI_POPULATE_DWORD_2(inbuf, INIT_EVQ_V2_IN_FLAGS,

				      INIT_EVQ_V2_IN_FLAG_INTERRUPTING, 1,

				      INIT_EVQ_V2_IN_FLAG_TYPE,

				      MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_AUTO);

	} else {

		bool cut_thru = !(nic_data->datapath_caps &

	use_v2 = nic_data->datapath_caps2 &

			    1 << MC_CMD_GET_CAPABILITIES_V2_OUT_INIT_EVQ_V2_LBN;

	cut_thru = !(nic_data->datapath_caps &

			      1 << MC_CMD_GET_CAPABILITIES_OUT_RX_BATCHING_LBN);



		MCDI_POPULATE_DWORD_4(inbuf, INIT_EVQ_IN_FLAGS,

				      INIT_EVQ_IN_FLAG_INTERRUPTING, 1,

				      INIT_EVQ_IN_FLAG_RX_MERGE, 1,

				      INIT_EVQ_IN_FLAG_TX_MERGE, 1,

				      INIT_EVQ_IN_FLAG_CUT_THRU, cut_thru);

	}



	dma_addr = channel->eventq.buf.dma_addr;

	for (i = 0; i < entries; ++i) {

		MCDI_SET_ARRAY_QWORD(inbuf, INIT_EVQ_IN_DMA_ADDR, i, dma_addr);

		dma_addr += EFX_BUF_SIZE;

	}



	inlen = MC_CMD_INIT_EVQ_IN_LEN(entries);



	rc = efx_mcdi_rpc(efx, MC_CMD_INIT_EVQ, inbuf, inlen,

			  outbuf, sizeof(outbuf), &outlen);



	if (outlen >= MC_CMD_INIT_EVQ_V2_OUT_LEN)

		netif_dbg(efx, drv, efx->net_dev,

			  "Channel %d using event queue flags %08x\n",

			  channel->channel,

			  MCDI_DWORD(outbuf, INIT_EVQ_V2_OUT_FLAGS));

	rc = efx_mcdi_ev_init(channel, cut_thru, use_v2);



	/* IRQ return is ignored */

	if (channel->channel || rc)
@@ -3356,15 +3270,10 @@ static int efx_ef10_ev_init(struct efx_channel *channel) 
		return 0;



fail:

	efx_ef10_ev_fini(channel);

	efx_mcdi_ev_fini(channel);

	return rc;

}



static void efx_ef10_ev_remove(struct efx_channel *channel)

{

	efx_nic_free_buffer(channel->efx, &channel->eventq.buf);

}



static void efx_ef10_handle_rx_wrong_queue(struct efx_rx_queue *rx_queue,

					   unsigned int rx_queue_label)

{
@@ -6630,10 +6539,10 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = { 
	.rx_remove = efx_ef10_rx_remove,

	.rx_write = efx_ef10_rx_write,

	.rx_defer_refill = efx_ef10_rx_defer_refill,

	.ev_probe = efx_ef10_ev_probe,

	.ev_probe = efx_mcdi_ev_probe,

	.ev_init = efx_ef10_ev_init,

	.ev_fini = efx_ef10_ev_fini,

	.ev_remove = efx_ef10_ev_remove,

	.ev_fini = efx_mcdi_ev_fini,

	.ev_remove = efx_mcdi_ev_remove,

	.ev_process = efx_ef10_ev_process,

	.ev_read_ack = efx_ef10_ev_read_ack,

	.ev_test_generate = efx_ef10_ev_test_generate,
@@ -6742,10 +6651,10 @@ const struct efx_nic_type efx_hunt_a0_nic_type = { 
	.rx_remove = efx_ef10_rx_remove,

	.rx_write = efx_ef10_rx_write,

	.rx_defer_refill = efx_ef10_rx_defer_refill,

	.ev_probe = efx_ef10_ev_probe,

	.ev_probe = efx_mcdi_ev_probe,

	.ev_init = efx_ef10_ev_init,

	.ev_fini = efx_ef10_ev_fini,

	.ev_remove = efx_ef10_ev_remove,

	.ev_fini = efx_mcdi_ev_fini,

	.ev_remove = efx_mcdi_ev_remove,

	.ev_process = efx_ef10_ev_process,

	.ev_read_ack = efx_ef10_ev_read_ack,

	.ev_test_generate = efx_ef10_ev_test_generate,

drivers/net/ethernet/sfc/mcdi_functions.c

+103 −0
Original line number Diff line number Diff line
@@ -59,3 +59,106 @@ int efx_mcdi_alloc_vis(struct efx_nic *efx, unsigned int min_vis, 
		*allocated_vis = MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_COUNT);

	return 0;

}



int efx_mcdi_ev_probe(struct efx_channel *channel)

{

	return efx_nic_alloc_buffer(channel->efx, &channel->eventq.buf,

				    (channel->eventq_mask + 1) *

				    sizeof(efx_qword_t),

				    GFP_KERNEL);

}



int efx_mcdi_ev_init(struct efx_channel *channel, bool v1_cut_thru, bool v2)

{

	MCDI_DECLARE_BUF(inbuf,

			 MC_CMD_INIT_EVQ_V2_IN_LEN(EFX_MAX_EVQ_SIZE * 8 /

						   EFX_BUF_SIZE));

	MCDI_DECLARE_BUF(outbuf, MC_CMD_INIT_EVQ_V2_OUT_LEN);

	size_t entries = channel->eventq.buf.len / EFX_BUF_SIZE;

	struct efx_nic *efx = channel->efx;

	struct efx_ef10_nic_data *nic_data;

	size_t inlen, outlen;

	dma_addr_t dma_addr;

	int rc, i;



	nic_data = efx->nic_data;



	/* Fill event queue with all ones (i.e. empty events) */

	memset(channel->eventq.buf.addr, 0xff, channel->eventq.buf.len);



	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_SIZE, channel->eventq_mask + 1);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_INSTANCE, channel->channel);

	/* INIT_EVQ expects index in vector table, not absolute */

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_IRQ_NUM, channel->channel);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_MODE,

		       MC_CMD_INIT_EVQ_IN_TMR_MODE_DIS);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_LOAD, 0);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_RELOAD, 0);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_MODE,

		       MC_CMD_INIT_EVQ_IN_COUNT_MODE_DIS);

	MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_THRSHLD, 0);



	if (v2) {

		/* Use the new generic approach to specifying event queue

		 * configuration, requesting lower latency or higher throughput.

		 * The options that actually get used appear in the output.

		 */

		MCDI_POPULATE_DWORD_2(inbuf, INIT_EVQ_V2_IN_FLAGS,

				      INIT_EVQ_V2_IN_FLAG_INTERRUPTING, 1,

				      INIT_EVQ_V2_IN_FLAG_TYPE,

				      MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_AUTO);

	} else {

		MCDI_POPULATE_DWORD_4(inbuf, INIT_EVQ_IN_FLAGS,

				      INIT_EVQ_IN_FLAG_INTERRUPTING, 1,

				      INIT_EVQ_IN_FLAG_RX_MERGE, 1,

				      INIT_EVQ_IN_FLAG_TX_MERGE, 1,

				      INIT_EVQ_IN_FLAG_CUT_THRU, v1_cut_thru);

	}



	dma_addr = channel->eventq.buf.dma_addr;

	for (i = 0; i < entries; ++i) {

		MCDI_SET_ARRAY_QWORD(inbuf, INIT_EVQ_IN_DMA_ADDR, i, dma_addr);

		dma_addr += EFX_BUF_SIZE;

	}



	inlen = MC_CMD_INIT_EVQ_IN_LEN(entries);



	rc = efx_mcdi_rpc(efx, MC_CMD_INIT_EVQ, inbuf, inlen,

			  outbuf, sizeof(outbuf), &outlen);



	if (outlen >= MC_CMD_INIT_EVQ_V2_OUT_LEN)

		netif_dbg(efx, drv, efx->net_dev,

			  "Channel %d using event queue flags %08x\n",

			  channel->channel,

			  MCDI_DWORD(outbuf, INIT_EVQ_V2_OUT_FLAGS));



	return rc;

}



void efx_mcdi_ev_remove(struct efx_channel *channel)

{

	efx_nic_free_buffer(channel->efx, &channel->eventq.buf);

}



void efx_mcdi_ev_fini(struct efx_channel *channel)

{

	MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_EVQ_IN_LEN);

	MCDI_DECLARE_BUF_ERR(outbuf);

	struct efx_nic *efx = channel->efx;

	size_t outlen;

	int rc;



	MCDI_SET_DWORD(inbuf, FINI_EVQ_IN_INSTANCE, channel->channel);



	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FINI_EVQ, inbuf, sizeof(inbuf),

				outbuf, sizeof(outbuf), &outlen);



	if (rc && rc != -EALREADY)

		goto fail;



	return;



fail:

	efx_mcdi_display_error(efx, MC_CMD_FINI_EVQ, MC_CMD_FINI_EVQ_IN_LEN,

			       outbuf, outlen, rc);

}

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