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net: ti: icssg: Add icssg queues APIs and macros

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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: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
This commit is contained in:
MD Danish Anwar
2024-04-04 12:38:01 +05:30
committed by Tom Rini
parent 1c05cb469f
commit ff7799907e
2 changed files with 56 additions and 0 deletions
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5
drivers/net/ti/icssg_prueth.h
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@@ -80,4 +80,9 @@ void icssg_config_ipg(struct prueth_priv *priv, int speed, int mii);
int icssg_config(struct prueth_priv *priv);
int emac_set_port_state(struct prueth_priv *priv, enum icssg_port_state_cmd cmd);
/* Buffer queue helpers */
int icssg_queue_pop(struct prueth *prueth, u8 queue);
void icssg_queue_push(struct prueth *prueth, int queue, u16 addr);
u32 icssg_queue_level(struct prueth *prueth, int queue);
#endif /* __NET_TI_ICSSG_PRUETH_H */

51
drivers/net/ti/icssg_queues.c Normal file
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@@ -0,0 +1,51 @@
// SPDX-License-Identifier: GPL-2.0
/* ICSSG Buffer queue helpers
*
* Copyright (C) 2018-2024 Texas Instruments Incorporated - https://www.ti.com
*/
#include <dm/ofnode.h>
#include <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;
}
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);
}
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;
}