From: Marc Kleine-Budde <mkl@pengutronix.de>
To: linux-can@vger.kernel.org
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
Thomas Kopp <thomas.kopp@microchip.com>,
Marc Kleine-Budde <mkl@pengutronix.de>
Subject: [PATCH net-next 8/8] can: mcp251xfd: mcp251xfd_priv: introduce macros specifying the number of supported TEF/RX/TX rings
Date: Thu, 17 Feb 2022 11:38:26 +0100 [thread overview]
Message-ID: <20220217103826.2299157-9-mkl@pengutronix.de> (raw)
In-Reply-To: <20220217103826.2299157-1-mkl@pengutronix.de>
This patch introduces macros to define the number of supported TEF, RX
and TX rings. As well as some assertions as sanity checks.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h
index f359dd0aa458..87cc13d455c1 100644
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h
@@ -2,7 +2,7 @@
*
* mcp251xfd - Microchip MCP251xFD Family CAN controller driver
*
- * Copyright (c) 2019, 2020 Pengutronix,
+ * Copyright (c) 2019, 2020, 2021 Pengutronix,
* Marc Kleine-Budde <kernel@pengutronix.de>
* Copyright (c) 2019 Martin Sperl <kernel@martin.sperl.org>
*/
@@ -410,6 +410,15 @@ static_assert(MCP251XFD_TIMESTAMP_WORK_DELAY_SEC <
#define MCP251XFD_SANITIZE_SPI 1
#define MCP251XFD_SANITIZE_CAN 1
+/* FIFO and Ring */
+#define MCP251XFD_FIFO_TEF_NUM 1U
+#define MCP251XFD_FIFO_RX_NUM_MAX 1U
+#define MCP251XFD_FIFO_TX_NUM 1U
+
+static_assert(MCP251XFD_FIFO_TEF_NUM == 1U);
+static_assert(MCP251XFD_FIFO_TEF_NUM == MCP251XFD_FIFO_TX_NUM);
+static_assert(MCP251XFD_FIFO_RX_NUM_MAX <= 4U);
+
/* Silence TX MAB overflow warnings */
#define MCP251XFD_QUIRK_MAB_NO_WARN BIT(0)
/* Use CRC to access registers */
@@ -596,9 +605,9 @@ struct mcp251xfd_priv {
u32 spi_max_speed_hz_fast;
u32 spi_max_speed_hz_slow;
- struct mcp251xfd_tef_ring tef[1];
- struct mcp251xfd_rx_ring *rx[1];
- struct mcp251xfd_tx_ring tx[1];
+ struct mcp251xfd_tef_ring tef[MCP251XFD_FIFO_TEF_NUM];
+ struct mcp251xfd_rx_ring *rx[MCP251XFD_FIFO_RX_NUM_MAX];
+ struct mcp251xfd_tx_ring tx[MCP251XFD_FIFO_TX_NUM];
u8 rx_ring_num;
--
2.34.1
prev parent reply other threads:[~2022-02-17 10:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 10:38 [PATCH net-next 0/8] can: mcp251xfd: add support for multiple Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 1/8] can: mcp251xfd: introduce struct mcp251xfd_tx_ring::nr and ::fifo_nr and make use of it Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 2/8] can: mcp251xfd: mcp251xfd_ring_init(): split ring_init into separate functions Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 3/8] can: mcp251xfd: ring: prepare to change order of TX and RX FIFOs Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 4/8] can: mcp251xfd: ring: " Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 5/8] can: mcp251xfd: ring: mcp251xfd_ring_init(): checked RAM usage of ring setup Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 6/8] can: mcp251xfd: ring: update FIFO setup debug info Marc Kleine-Budde
2022-02-17 10:38 ` [PATCH net-next 7/8] can: mcp251xfd: prepare for multiple RX-FIFOs Marc Kleine-Budde
2022-02-17 10:38 ` Marc Kleine-Budde [this message]
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