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/* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __MSM_GPI_H_
#define __MSM_GPI_H_
struct __packed msm_gpi_tre {
u32 dword[4];
};
enum msm_gpi_tre_type {
MSM_GPI_TRE_INVALID = 0x00,
MSM_GPI_TRE_NOP = 0x01,
MSM_GPI_TRE_DMA_W_BUF = 0x10,
MSM_GPI_TRE_DMA_IMMEDIATE = 0x11,
MSM_GPI_TRE_DMA_W_SG_LIST = 0x12,
MSM_GPI_TRE_GO = 0x20,
MSM_GPI_TRE_CONFIG0 = 0x22,
MSM_GPI_TRE_CONFIG1 = 0x23,
MSM_GPI_TRE_CONFIG2 = 0x24,
MSM_GPI_TRE_CONFIG3 = 0x25,
MSM_GPI_TRE_LOCK = 0x30,
MSM_GPI_TRE_UNLOCK = 0x31,
};
#define MSM_GPI_TRE_TYPE(tre) ((tre->dword[3] >> 16) & 0xFF)
/* DMA w. Buffer TRE */
#ifdef CONFIG_ARM64
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD0(ptr) ((u32)ptr)
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD1(ptr) ((u32)(ptr >> 32))
#else
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD0(ptr) (ptr)
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD1(ptr) 0
#endif
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD2(length) (length & 0xFFFFFF)
#define MSM_GPI_DMA_W_BUFFER_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) \
((0x1 << 20) | (0x0 << 16) | (link_rx << 11) | (bei << 10) | \
(ieot << 9) | (ieob << 8) | ch)
#define MSM_GPI_DMA_W_BUFFER_TRE_GET_LEN(tre) (tre->dword[2] & 0xFFFFFF)
#define MSM_GPI_DMA_W_BUFFER_TRE_SET_LEN(tre, length) (tre->dword[2] = \
MSM_GPI_DMA_W_BUFFER_TRE_DWORD2(length))
/* DMA Immediate TRE */
#define MSM_GPI_DMA_IMMEDIATE_TRE_DWORD0(d3, d2, d1, d0) ((d3 << 24) | \
(d2 << 16) | (d1 << 8) | (d0))
#define MSM_GPI_DMA_IMMEDIATE_TRE_DWORD1(d4, d5, d6, d7) ((d7 << 24) | \
(d6 << 16) | (d5 << 8) | (d4))
#define MSM_GPI_DMA_IMMEDIATE_TRE_DWORD2(length) (length & 0xF)
#define MSM_GPI_DMA_IMMEDIATE_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) \
((0x1 << 20) | (0x1 << 16) | (link_rx << 11) | (bei << 10) | \
(ieot << 9) | (ieob << 8) | ch)
#define MSM_GPI_DMA_IMMEDIATE_TRE_GET_LEN(tre) (tre->dword[2] & 0xF)
/* DMA w. Scatter/Gather List TRE */
#ifdef CONFIG_ARM64
#define MSM_GPI_SG_LIST_TRE_DWORD0(ptr) ((u32)ptr)
#define MSM_GPI_SG_LIST_TRE_DWORD1(ptr) ((u32)(ptr >> 32))
#else
#define MSM_GPI_SG_LIST_TRE_DWORD0(ptr) (ptr)
#define MSM_GPI_SG_LIST_TRE_DWORD1(ptr) 0
#endif
#define MSM_GPI_SG_LIST_TRE_DWORD2(length) (length & 0xFFFF)
#define MSM_GPI_SG_LIST_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x1 << 20) \
| (0x2 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* SG Element */
#ifdef CONFIG_ARM64
#define MSM_GPI_SG_ELEMENT_DWORD0(ptr) ((u32)ptr)
#define MSM_GPI_SG_ELEMENT_DWORD1(ptr) ((u32)(ptr >> 32))
#else
#define MSM_GPI_SG_ELEMENT_DWORD0(ptr) (ptr)
#define MSM_GPI_SG_ELEMENT_DWORD1(ptr) 0
#endif
#define MSM_GSI_SG_ELEMENT_DWORD2(length) (length & 0xFFFFF)
#define MSM_GSI_SG_ELEMENT_DWORD3 (0)
/* Config2 TRE */
#define GPI_CONFIG2_TRE_DWORD0(gr, txp) ((gr << 20) | (txp))
#define GPI_CONFIG2_TRE_DWORD1(txp) (txp)
#define GPI_CONFIG2_TRE_DWORD2 (0)
#define GPI_CONFIG2_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x2 << 20) | \
(0x4 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* Config3 TRE */
#define GPI_CONFIG3_TRE_DWORD0(rxp) (rxp)
#define GPI_CONFIG3_TRE_DWORD1(rxp) (rxp)
#define GPI_CONFIG3_TRE_DWORD2 (0)
#define GPI_CONFIG3_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x2 << 20) \
| (0x5 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* SPI Go TRE */
#define MSM_GPI_SPI_GO_TRE_DWORD0(flags, cs, command) ((flags << 24) | \
(cs << 8) | command)
#define MSM_GPI_SPI_GO_TRE_DWORD1 (0)
#define MSM_GPI_SPI_GO_TRE_DWORD2(rx_len) (rx_len)
#define MSM_GPI_SPI_GO_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x2 << 20) | \
(0x0 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* SPI Config0 TRE */
#define MSM_GPI_SPI_CONFIG0_TRE_DWORD0(pack, flags, word_size) ((pack << 24) | \
(flags << 8) | word_size)
#define MSM_GPI_SPI_CONFIG0_TRE_DWORD1(it_del, cs_clk_del, iw_del) \
((it_del << 16) | (cs_clk_del << 8) | iw_del)
#define MSM_GPI_SPI_CONFIG0_TRE_DWORD2(clk_src, clk_div) ((clk_src << 16) | \
clk_div)
#define MSM_GPI_SPI_CONFIG0_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) \
((0x2 << 20) | (0x2 << 16) | (link_rx << 11) | (bei << 10) | \
(ieot << 9) | (ieob << 8) | ch)
/* UART Go TRE */
#define MSM_GPI_UART_GO_TRE_DWORD0(en_hunt, command) ((en_hunt << 8) | command)
#define MSM_GPI_UART_GO_TRE_DWORD1 (0)
#define MSM_GPI_UART_GO_TRE_DWORD2 (0)
#define MSM_GPI_UART_GO_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x2 << 20) \
| (0x0 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* UART Config0 TRE */
#define MSM_GPI_UART_CONFIG0_TRE_DWORD0(pack, hunt, flags, parity, sbl, size) \
((pack << 24) | (hunt << 16) | (flags << 8) | (parity << 5) | \
(sbl << 3) | size)
#define MSM_GPI_UART_CONFIG0_TRE_DWORD1(rfr_level, rx_stale) \
((rfr_level << 24) | rx_stale)
#define MSM_GPI_UART_CONFIG0_TRE_DWORD2(clk_source, clk_div) \
((clk_source << 16) | clk_div)
#define MSM_GPI_UART_CONFIG0_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) \
((0x2 << 20) | (0x2 << 16) | (link_rx << 11) | (bei << 10) | \
(ieot << 9) | (ieob << 8) | ch)
/* I2C GO TRE */
#define MSM_GPI_I2C_GO_TRE_DWORD0(flags, slave, opcode) \
((flags << 24) | (slave << 8) | opcode)
#define MSM_GPI_I2C_GO_TRE_DWORD1 (0)
#define MSM_GPI_I2C_GO_TRE_DWORD2(rx_len) (rx_len)
#define MSM_GPI_I2C_GO_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) ((0x2 << 20) | \
(0x0 << 16) | (link_rx << 11) | (bei << 10) | (ieot << 9) | \
(ieob << 8) | ch)
/* I2C Config0 TRE */
#define MSM_GPI_I2C_CONFIG0_TRE_DWORD0(pack, t_cycle, t_high, t_low) \
((pack << 24) | (t_cycle << 16) | (t_high << 8) | t_low)
#define MSM_GPI_I2C_CONFIG0_TRE_DWORD1(inter_delay, noise_rej) \
((inter_delay << 16) | noise_rej)
#define MSM_GPI_I2C_CONFIG0_TRE_DWORD2(clk_src, clk_div) \
((clk_src << 16) | clk_div)
#define MSM_GPI_I2C_CONFIG0_TRE_DWORD3(link_rx, bei, ieot, ieob, ch) \
((0x2 << 20) | (0x2 << 16) | (link_rx << 11) | (bei << 10) | \
(ieot << 9) | (ieob << 8) | ch)
#ifdef CONFIG_ARM64
#define MSM_GPI_RING_PHYS_ADDR_UPPER(ptr) ((u32)(ptr >> 32))
#else
#define MSM_GPI_RING_PHYS_ADDR_UPPER(ptr) 0
#endif
/* cmds to perform by using dmaengine_slave_config() */
enum msm_gpi_ctrl_cmd {
MSM_GPI_INIT,
MSM_GPI_CMD_UART_SW_STALE,
MSM_GPI_CMD_UART_RFR_READY,
MSM_GPI_CMD_UART_RFR_NOT_READY,
};
enum msm_gpi_cb_event {
/* These events are hardware generated events */
MSM_GPI_QUP_NOTIFY,
MSM_GPI_QUP_ERROR, /* global error */
MSM_GPI_QUP_CH_ERROR, /* channel specific error */
MSM_GPI_QUP_FW_ERROR, /* unhandled error */
/* These events indicate a software bug */
MSM_GPI_QUP_PENDING_EVENT,
MSM_GPI_QUP_EOT_DESC_MISMATCH,
MSM_GPI_QUP_SW_ERROR,
MSM_GPI_QUP_MAX_EVENT,
};
struct msm_gpi_error_log {
u32 routine;
u32 type;
u32 error_code;
};
struct msm_gpi_cb {
enum msm_gpi_cb_event cb_event;
u64 status;
u64 timestamp;
u64 count;
struct msm_gpi_error_log error_log;
};
struct gpi_client_info {
/*
* memory for msm_gpi_cb is released after callback, clients shall
* save any required data for post processing after returning
* from callback
*/
void (*callback)(struct dma_chan *chan,
struct msm_gpi_cb const *msm_gpi_cb,
void *cb_param);
void *cb_param;
};
/*
* control structure to config gpi dma engine via dmaengine_slave_config()
* dma_chan.private should point to msm_gpi_ctrl structure
*/
struct msm_gpi_ctrl {
enum msm_gpi_ctrl_cmd cmd;
union {
struct gpi_client_info init;
};
};
enum msm_gpi_tce_code {
MSM_GPI_TCE_SUCCESS = 1,
MSM_GPI_TCE_EOT = 2,
MSM_GPI_TCE_EOB = 4,
MSM_GPI_TCE_UNEXP_ERR = 16,
};
/*
* gpi specific callback parameters to pass between gpi client and gpi engine.
* client shall set async_desc.callback_parm to msm_gpi_dma_async_tx_cb_param
*/
struct msm_gpi_dma_async_tx_cb_param {
u32 length;
enum msm_gpi_tce_code completion_code; /* TCE event code */
u32 status;
struct __packed msm_gpi_tre imed_tre;
void *userdata;
};
#endif
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