linux/drivers/net/ethernet/ti/icssg/icssg_queues.c
MD Danish Anwar a8ea8d531d net: ti: icssg-prueth: Split out common object into module
icssg_prueth.c and icssg_prueth_sr1.c drivers use multiple common .c
files. These common objects are getting added to multiple modules. As a
result when both drivers are enabled in .config, below warning is seen.

drivers/net/ethernet/ti/Makefile: icssg/icssg_common.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_classifier.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_config.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_mii_cfg.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_stats.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_ethtool.o is added to multiple modules: icssg-prueth icssg-prueth-sr1

Fix this by building a new module (icssg.o) for all the common objects.
Both the driver can then depend on this common module.

Some APIs being exported have emac_ as the prefix which may result into
confusion with other existing APIs with emac_ prefix, to avoid
confusion, rename the APIs being exported with emac_ to icssg_ prefix.

This also fixes below error seen when both drivers are built.
ERROR: modpost: "icssg_queue_pop"
[drivers/net/ethernet/ti/icssg-prueth-sr1.ko] undefined!
ERROR: modpost: "icssg_queue_push"
[drivers/net/ethernet/ti/icssg-prueth-sr1.ko] undefined!

Reported-and-tested-by: Thorsten Leemhuis <linux@leemhuis.info>
Closes: https://lore.kernel.org/oe-kbuild-all/202405182038.ncf1mL7Z-lkp@intel.com/
Fixes: 487f7323f3 ("net: ti: icssg-prueth: Add helper functions to configure FDB")
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Sai Krishna <saikrishnag@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-07-15 13:50:40 +01:00

52 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
/* ICSSG Buffer queue helpers
*
* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com
*/
#include <linux/regmap.h>
#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;
}
EXPORT_SYMBOL_GPL(icssg_queue_pop);
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);
}
EXPORT_SYMBOL_GPL(icssg_queue_push);
u32 icssg_queue_level(struct prueth *prueth, int queue)
{
u32 reg;
if (queue >= ICSSG_QUEUES_MAX)
return 0;
regmap_read(prueth->miig_rt, ICSSG_QUEUE_CNT_OFFSET + 4 * queue, &reg);
return reg;
}