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Fri, 15 Aug 2025 13:59:20 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id mNYDEDg9n2jMfAAAD6G6ig (envelope-from ); Fri, 15 Aug 2025 13:59:20 +0000 From: Stanimir Varbanov To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, Broadcom internal kernel review list Cc: Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Andrea della Porta , Nicolas Ferre , Claudiu Beznea , Phil Elwell , Jonathan Bell , Dave Stevenson , Stanimir Varbanov Subject: [PATCH 1/5] net: cadence: macb: Set upper 32bits of DMA ring buffer Date: Fri, 15 Aug 2025 16:59:07 +0300 Message-ID: <20250815135911.1383385-2-svarbanov@suse.de> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20250815135911.1383385-1-svarbanov@suse.de> References: <20250815135911.1383385-1-svarbanov@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-1.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,suse.de:email]; RCPT_COUNT_TWELVE(0.00)[22]; MIME_TRACE(0.00)[0:+]; FUZZY_RATELIMITED(0.00)[rspamd.com]; TAGGED_RCPT(0.00)[dt,netdev]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_DN_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Level: X-Spam-Score: -1.30 Content-Type: text/plain; charset="utf-8" In case of rx queue reset and 64bit capable hardware, set the upper 32bits of DMA ring buffer address. Signed-off-by: Stanimir Varbanov Reviewed-by: Andrew Lunn --- drivers/net/ethernet/cadence/macb_main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/etherne= t/cadence/macb_main.c index ce95fad8cedd..41c0cbb5262e 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -1635,6 +1635,11 @@ static int macb_rx(struct macb_queue *queue, struct = napi_struct *napi, =20 macb_init_rx_ring(queue); queue_writel(queue, RBQP, queue->rx_ring_dma); +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT + if (bp->hw_dma_cap & HW_DMA_CAP_64B) + macb_writel(bp, RBQPH, + upper_32_bits(queue->rx_ring_dma)); +#endif =20 macb_writel(bp, NCR, ctrl | MACB_BIT(RE)); =20 --=20 2.47.0