284 lines
9.2 KiB
C
284 lines
9.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (c) 2018 MediaTek Inc.
|
|
*
|
|
*/
|
|
|
|
#ifndef __MTK_CMDQ_H__
|
|
#define __MTK_CMDQ_H__
|
|
|
|
#include <linux/mailbox_client.h>
|
|
#include <linux/mailbox/mtk-cmdq-mailbox.h>
|
|
#include <linux/timer.h>
|
|
|
|
#define CMDQ_ADDR_HIGH(addr) ((u32)(((addr) >> 16) & GENMASK(31, 0)))
|
|
#define CMDQ_ADDR_LOW(addr) ((u16)(addr) | BIT(1))
|
|
|
|
struct cmdq_pkt;
|
|
|
|
struct cmdq_client_reg {
|
|
u8 subsys;
|
|
u16 offset;
|
|
u16 size;
|
|
};
|
|
|
|
struct cmdq_client {
|
|
struct mbox_client client;
|
|
struct mbox_chan *chan;
|
|
};
|
|
|
|
/**
|
|
* cmdq_dev_get_client_reg() - parse cmdq client reg from the device
|
|
* node of CMDQ client
|
|
* @dev: device of CMDQ mailbox client
|
|
* @client_reg: CMDQ client reg pointer
|
|
* @idx: the index of desired reg
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*
|
|
* Help CMDQ client parsing the cmdq client reg
|
|
* from the device node of CMDQ client.
|
|
*/
|
|
int cmdq_dev_get_client_reg(struct device *dev,
|
|
struct cmdq_client_reg *client_reg, int idx);
|
|
|
|
/**
|
|
* cmdq_mbox_create() - create CMDQ mailbox client and channel
|
|
* @dev: device of CMDQ mailbox client
|
|
* @index: index of CMDQ mailbox channel
|
|
*
|
|
* Return: CMDQ mailbox client pointer
|
|
*/
|
|
struct cmdq_client *cmdq_mbox_create(struct device *dev, int index);
|
|
|
|
/**
|
|
* cmdq_mbox_destroy() - destroy CMDQ mailbox client and channel
|
|
* @client: the CMDQ mailbox client
|
|
*/
|
|
void cmdq_mbox_destroy(struct cmdq_client *client);
|
|
|
|
/**
|
|
* cmdq_pkt_create() - create a CMDQ packet
|
|
* @client: the CMDQ mailbox client
|
|
* @size: required CMDQ buffer size
|
|
*
|
|
* Return: CMDQ packet pointer
|
|
*/
|
|
struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size);
|
|
|
|
/**
|
|
* cmdq_pkt_destroy() - destroy the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
*/
|
|
void cmdq_pkt_destroy(struct cmdq_pkt *pkt);
|
|
|
|
/**
|
|
* cmdq_pkt_write() - append write command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @subsys: the CMDQ sub system code
|
|
* @offset: register offset from CMDQ sub system
|
|
* @value: the specified target register value
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value);
|
|
|
|
/**
|
|
* cmdq_pkt_write_mask() - append write command with mask to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @subsys: the CMDQ sub system code
|
|
* @offset: register offset from CMDQ sub system
|
|
* @value: the specified target register value
|
|
* @mask: the specified target register mask
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys,
|
|
u16 offset, u32 value, u32 mask);
|
|
|
|
/*
|
|
* cmdq_pkt_read_s() - append read_s command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @high_addr_reg_idx: internal register ID which contains high address of pa
|
|
* @addr_low: low address of pa
|
|
* @reg_idx: the CMDQ internal register ID to cache read data
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low,
|
|
u16 reg_idx);
|
|
|
|
/**
|
|
* cmdq_pkt_write_s() - append write_s command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @high_addr_reg_idx: internal register ID which contains high address of pa
|
|
* @addr_low: low address of pa
|
|
* @src_reg_idx: the CMDQ internal register ID which cache source value
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*
|
|
* Support write value to physical address without subsys. Use CMDQ_ADDR_HIGH()
|
|
* to get high address and call cmdq_pkt_assign() to assign value into internal
|
|
* reg. Also use CMDQ_ADDR_LOW() to get low address for addr_low parameter when
|
|
* call to this function.
|
|
*/
|
|
int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,
|
|
u16 addr_low, u16 src_reg_idx);
|
|
|
|
/**
|
|
* cmdq_pkt_write_s_mask() - append write_s with mask command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @high_addr_reg_idx: internal register ID which contains high address of pa
|
|
* @addr_low: low address of pa
|
|
* @src_reg_idx: the CMDQ internal register ID which cache source value
|
|
* @mask: the specified target address mask, use U32_MAX if no need
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*
|
|
* Support write value to physical address without subsys. Use CMDQ_ADDR_HIGH()
|
|
* to get high address and call cmdq_pkt_assign() to assign value into internal
|
|
* reg. Also use CMDQ_ADDR_LOW() to get low address for addr_low parameter when
|
|
* call to this function.
|
|
*/
|
|
int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,
|
|
u16 addr_low, u16 src_reg_idx, u32 mask);
|
|
|
|
/**
|
|
* cmdq_pkt_write_s_value() - append write_s command to the CMDQ packet which
|
|
* write value to a physical address
|
|
* @pkt: the CMDQ packet
|
|
* @high_addr_reg_idx: internal register ID which contains high address of pa
|
|
* @addr_low: low address of pa
|
|
* @value: the specified target value
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,
|
|
u16 addr_low, u32 value);
|
|
|
|
/**
|
|
* cmdq_pkt_write_s_mask_value() - append write_s command with mask to the CMDQ
|
|
* packet which write value to a physical
|
|
* address
|
|
* @pkt: the CMDQ packet
|
|
* @high_addr_reg_idx: internal register ID which contains high address of pa
|
|
* @addr_low: low address of pa
|
|
* @value: the specified target value
|
|
* @mask: the specified target mask
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,
|
|
u16 addr_low, u32 value, u32 mask);
|
|
|
|
/**
|
|
* cmdq_pkt_wfe() - append wait for event command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @event: the desired event type to wait
|
|
* @clear: clear event or not after event arrive
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear);
|
|
|
|
/**
|
|
* cmdq_pkt_clear_event() - append clear event command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @event: the desired event to be cleared
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event);
|
|
|
|
/**
|
|
* cmdq_pkt_set_event() - append set event command to the CMDQ packet
|
|
* @pkt: the CMDQ packet
|
|
* @event: the desired event to be set
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_set_event(struct cmdq_pkt *pkt, u16 event);
|
|
|
|
/**
|
|
* cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to
|
|
* execute an instruction that wait for a specified
|
|
* hardware register to check for the value w/o mask.
|
|
* All GCE hardware threads will be blocked by this
|
|
* instruction.
|
|
* @pkt: the CMDQ packet
|
|
* @subsys: the CMDQ sub system code
|
|
* @offset: register offset from CMDQ sub system
|
|
* @value: the specified target register value
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
|
|
u16 offset, u32 value);
|
|
|
|
/**
|
|
* cmdq_pkt_poll_mask() - Append polling command to the CMDQ packet, ask GCE to
|
|
* execute an instruction that wait for a specified
|
|
* hardware register to check for the value w/ mask.
|
|
* All GCE hardware threads will be blocked by this
|
|
* instruction.
|
|
* @pkt: the CMDQ packet
|
|
* @subsys: the CMDQ sub system code
|
|
* @offset: register offset from CMDQ sub system
|
|
* @value: the specified target register value
|
|
* @mask: the specified target register mask
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
|
|
u16 offset, u32 value, u32 mask);
|
|
|
|
/**
|
|
* cmdq_pkt_assign() - Append logic assign command to the CMDQ packet, ask GCE
|
|
* to execute an instruction that set a constant value into
|
|
* internal register and use as value, mask or address in
|
|
* read/write instruction.
|
|
* @pkt: the CMDQ packet
|
|
* @reg_idx: the CMDQ internal register ID
|
|
* @value: the specified value
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
|
|
|
|
/**
|
|
* cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
|
|
* to execute an instruction that change current thread PC to
|
|
* a physical address which should contains more instruction.
|
|
* @pkt: the CMDQ packet
|
|
* @addr: physical address of target instruction buffer
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
|
|
|
|
/**
|
|
* cmdq_pkt_finalize() - Append EOC and jump command to pkt.
|
|
* @pkt: the CMDQ packet
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*/
|
|
int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
|
|
|
|
/**
|
|
* cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
|
|
* packet and call back at the end of done packet
|
|
* @pkt: the CMDQ packet
|
|
* @cb: called at the end of done packet
|
|
* @data: this data will pass back to cb
|
|
*
|
|
* Return: 0 for success; else the error code is returned
|
|
*
|
|
* Trigger CMDQ to asynchronously execute the CMDQ packet and call back
|
|
* at the end of done packet. Note that this is an ASYNC function. When the
|
|
* function returned, it may or may not be finished.
|
|
*/
|
|
int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
|
|
void *data);
|
|
|
|
#endif /* __MTK_CMDQ_H__ */
|