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Miller" , MD Danish Anwar CC: , , , , , , Subject: [PATCH v11 04/10] net: ti: icssg-prueth: Add icssg queues APIs and macros Date: Mon, 24 Jul 2023 16:59:28 +0530 Message-ID: <20230724112934.2637802-5-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230724112934.2637802-1-danishanwar@ti.com> References: <20230724112934.2637802-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772301637534240921 X-GMAIL-MSGID: 1772301637534240921 Add icssg_queue.c file. This file introduces macros and APIs related to ICSSG queues. These will be used by ICSSG Ethernet driver. Signed-off-by: MD Danish Anwar Reviewed-by: Andrew Lunn --- drivers/net/ethernet/ti/icssg_queues.c | 38 ++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 drivers/net/ethernet/ti/icssg_queues.c diff --git a/drivers/net/ethernet/ti/icssg_queues.c b/drivers/net/ethernet/ti/icssg_queues.c new file mode 100644 index 000000000000..1c2b92dbcb59 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg_queues.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 +/* ICSSG Buffer queue helpers + * + * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com + */ + +#include +#include "icssg_prueth.h" + +#define ICSSG_QUEUES_MAX 64 +#define ICSSG_QUEUE_OFFSET 0xd00 +#define ICSSG_QUEUE_PEEK_OFFSET 0xe00 +#define ICSSG_QUEUE_CNT_OFFSET 0xe40 +#define ICSSG_QUEUE_RESET_OFFSET 0xf40 + +int icssg_queue_pop(struct prueth *prueth, u8 queue) +{ + u32 val, cnt; + + if (queue >= ICSSG_QUEUES_MAX) + return -EINVAL; + + regmap_read(prueth->miig_rt, ICSSG_QUEUE_CNT_OFFSET + 4 * queue, &cnt); + if (!cnt) + return -EINVAL; + + regmap_read(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, &val); + + return val; +} + +void icssg_queue_push(struct prueth *prueth, int queue, u16 addr) +{ + if (queue >= ICSSG_QUEUES_MAX) + return; + + regmap_write(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, addr); +}