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Date:      Fri, 23 Nov 2018 09:15:09 +0000 (UTC)
From:      Andrew Rybchenko <arybchik@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r340807 - head/sys/dev/sfxge/common
Message-ID:  <201811230915.wAN9F9QS000202@repo.freebsd.org>
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Author: arybchik
Date: Fri Nov 23 09:15:08 2018
New Revision: 340807
URL: https://svnweb.freebsd.org/changeset/base/340807

Log:
  sfxge(4): add the max number of RSS exclusive contexts
  
  The patch adds enc_rx_scale_max_exclusive_contexts member
  to nic_cfg_t structure and sets the corresponding values
  for Siena, Huntington and Medford
  
  Submitted by:   Mark Spender <mspender at solarflare.com>
  Sponsored by:   Solarflare Communications, Inc.
  Differential Revision:  https://reviews.freebsd.org/D18077

Modified:
  head/sys/dev/sfxge/common/efx.h
  head/sys/dev/sfxge/common/hunt_nic.c
  head/sys/dev/sfxge/common/medford_nic.c
  head/sys/dev/sfxge/common/siena_nic.c

Modified: head/sys/dev/sfxge/common/efx.h
==============================================================================
--- head/sys/dev/sfxge/common/efx.h	Fri Nov 23 09:14:57 2018	(r340806)
+++ head/sys/dev/sfxge/common/efx.h	Fri Nov 23 09:15:08 2018	(r340807)
@@ -1134,6 +1134,7 @@ typedef struct efx_nic_cfg_s {
 	uint32_t		enc_rx_prefix_size;
 	uint32_t		enc_rx_buf_align_start;
 	uint32_t		enc_rx_buf_align_end;
+	uint32_t		enc_rx_scale_max_exclusive_contexts;
 #if EFSYS_OPT_LOOPBACK
 	efx_qword_t		enc_loopback_types[EFX_LINK_NMODES];
 #endif	/* EFSYS_OPT_LOOPBACK */

Modified: head/sys/dev/sfxge/common/hunt_nic.c
==============================================================================
--- head/sys/dev/sfxge/common/hunt_nic.c	Fri Nov 23 09:14:57 2018	(r340806)
+++ head/sys/dev/sfxge/common/hunt_nic.c	Fri Nov 23 09:15:08 2018	(r340807)
@@ -304,6 +304,13 @@ hunt_board_cfg(
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
 
+	/*
+	 * Maximum number of exclusive RSS contexts which can be allocated. The
+	 * hardware supports 64, but 6 are reserved for shared contexts. They
+	 * are a global resource so not all may be available.
+	 */
+	encp->enc_rx_scale_max_exclusive_contexts = 58;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
 	/* No boundary crossing limits */
 	encp->enc_tx_dma_desc_boundary = 0;

Modified: head/sys/dev/sfxge/common/medford_nic.c
==============================================================================
--- head/sys/dev/sfxge/common/medford_nic.c	Fri Nov 23 09:14:57 2018	(r340806)
+++ head/sys/dev/sfxge/common/medford_nic.c	Fri Nov 23 09:15:08 2018	(r340807)
@@ -301,6 +301,13 @@ medford_board_cfg(
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
 
+	/*
+	 * Maximum number of exclusive RSS contexts which can be allocated. The
+	 * hardware supports 64, but 6 are reserved for shared contexts. They
+	 * are a global resource so not all may be available.
+	 */
+	encp->enc_rx_scale_max_exclusive_contexts = 58;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
 	/* No boundary crossing limits */
 	encp->enc_tx_dma_desc_boundary = 0;

Modified: head/sys/dev/sfxge/common/siena_nic.c
==============================================================================
--- head/sys/dev/sfxge/common/siena_nic.c	Fri Nov 23 09:14:57 2018	(r340806)
+++ head/sys/dev/sfxge/common/siena_nic.c	Fri Nov 23 09:15:08 2018	(r340807)
@@ -140,6 +140,9 @@ siena_board_cfg(
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = 1;
 
+	/* There is one RSS context per function */
+	encp->enc_rx_scale_max_exclusive_contexts = 1;
+
 	encp->enc_tx_dma_desc_size_max = EFX_MASK32(FSF_AZ_TX_KER_BYTE_COUNT);
 	/* Fragments must not span 4k boundaries. */
 	encp->enc_tx_dma_desc_boundary = 4096;

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