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Miller" , MD Danish Anwar CC: , , , , , , Subject: [PATCH v12 04/10] net: ti: icssg-prueth: Add icssg queues APIs and macros Date: Thu, 27 Jul 2023 16:58:21 +0530 Message-ID: <20230727112827.3977534-5-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230727112827.3977534-1-danishanwar@ti.com> References: <20230727112827.3977534-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230727_042934_487695_51FFDECE X-CRM114-Status: GOOD ( 13.98 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add icssg_queue.c file. This file introduces macros and APIs related to ICSSG queues. These will be used by ICSSG Ethernet driver. Reviewed-by: Andrew Lunn Signed-off-by: MD Danish Anwar --- drivers/net/ethernet/ti/icssg/icssg_queues.c | 38 ++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 drivers/net/ethernet/ti/icssg/icssg_queues.c diff --git a/drivers/net/ethernet/ti/icssg/icssg_queues.c b/drivers/net/ethernet/ti/icssg/icssg_queues.c new file mode 100644 index 000000000000..2e3f7db43db7 --- /dev/null +++ b/drivers/net/ethernet/ti/icssg/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 __maybe_unused 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 __maybe_unused 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); +}