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/*
* Copyright (c) 2017, 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 _LINUX_QCOM_GENI_SE
#define _LINUX_QCOM_GENI_SE
#include <linux/clk.h>
#include <linux/dma-direction.h>
#include <linux/io.h>
#include <linux/list.h>
#include <linux/msm-bus.h>
#include <linux/msm-bus-board.h>
/* Transfer mode supported by GENI Serial Engines */
enum se_xfer_mode {
INVALID,
FIFO_MODE,
GSI_DMA,
SE_DMA,
};
/* Protocols supported by GENI Serial Engines */
enum se_protocol_types {
NONE,
SPI,
UART,
I2C,
I3C
};
/**
* struct geni_se_rsc - GENI Serial Engine Resource
* @wrapper_dev: Pointer to the parent QUPv3 core.
* @se_clk: Handle to the core serial engine clock.
* @m_ahb_clk: Handle to the primary AHB clock.
* @s_ahb_clk: Handle to the secondary AHB clock.
* @ab_list: List Head of Average bus banwidth list.
* @ab: Average bus bandwidth request value.
* @ib_list: List Head of Instantaneous bus banwidth list.
* @ib: Instantaneous bus bandwidth request value.
* @geni_pinctrl: Handle to the pinctrl configuration.
* @geni_gpio_active: Handle to the default/active pinctrl state.
* @geni_gpi_sleep: Handle to the sleep pinctrl state.
*/
struct se_geni_rsc {
struct device *wrapper_dev;
struct clk *se_clk;
struct clk *m_ahb_clk;
struct clk *s_ahb_clk;
struct list_head ab_list;
unsigned long ab;
struct list_head ib_list;
unsigned long ib;
struct pinctrl *geni_pinctrl;
struct pinctrl_state *geni_gpio_active;
struct pinctrl_state *geni_gpio_sleep;
int clk_freq_out;
};
#define PINCTRL_DEFAULT "default"
#define PINCTRL_SLEEP "sleep"
#define KHz(freq) (1000 * (freq))
/* Common SE registers */
#define GENI_INIT_CFG_REVISION (0x0)
#define GENI_S_INIT_CFG_REVISION (0x4)
#define GENI_FORCE_DEFAULT_REG (0x20)
#define GENI_OUTPUT_CTRL (0x24)
#define GENI_CGC_CTRL (0x28)
#define SE_GENI_STATUS (0x40)
#define GENI_SER_M_CLK_CFG (0x48)
#define GENI_SER_S_CLK_CFG (0x4C)
#define GENI_CLK_CTRL_RO (0x60)
#define GENI_IF_FIFO_DISABLE_RO (0x64)
#define GENI_FW_REVISION_RO (0x68)
#define GENI_FW_S_REVISION_RO (0x6C)
#define SE_GENI_CLK_SEL (0x7C)
#define SE_GENI_BYTE_GRAN (0x254)
#define SE_GENI_DMA_MODE_EN (0x258)
#define SE_GENI_TX_PACKING_CFG0 (0x260)
#define SE_GENI_TX_PACKING_CFG1 (0x264)
#define SE_GENI_RX_PACKING_CFG0 (0x284)
#define SE_GENI_RX_PACKING_CFG1 (0x288)
#define SE_GENI_M_CMD0 (0x600)
#define SE_GENI_M_CMD_CTRL_REG (0x604)
#define SE_GENI_M_IRQ_STATUS (0x610)
#define SE_GENI_M_IRQ_EN (0x614)
#define SE_GENI_M_IRQ_CLEAR (0x618)
#define SE_GENI_S_CMD0 (0x630)
#define SE_GENI_S_CMD_CTRL_REG (0x634)
#define SE_GENI_S_IRQ_STATUS (0x640)
#define SE_GENI_S_IRQ_EN (0x644)
#define SE_GENI_S_IRQ_CLEAR (0x648)
#define SE_GENI_TX_FIFOn (0x700)
#define SE_GENI_RX_FIFOn (0x780)
#define SE_GENI_TX_FIFO_STATUS (0x800)
#define SE_GENI_RX_FIFO_STATUS (0x804)
#define SE_GENI_TX_WATERMARK_REG (0x80C)
#define SE_GENI_RX_WATERMARK_REG (0x810)
#define SE_GENI_RX_RFR_WATERMARK_REG (0x814)
#define SE_GENI_IOS (0x908)
#define SE_GENI_M_GP_LENGTH (0x910)
#define SE_GENI_S_GP_LENGTH (0x914)
#define SE_GSI_EVENT_EN (0xE18)
#define SE_IRQ_EN (0xE1C)
#define SE_HW_PARAM_0 (0xE24)
#define SE_HW_PARAM_1 (0xE28)
#define SE_DMA_GENERAL_CFG (0xE30)
/* GENI_OUTPUT_CTRL fields */
#define DEFAULT_IO_OUTPUT_CTRL_MSK (GENMASK(6, 0))
/* GENI_FORCE_DEFAULT_REG fields */
#define FORCE_DEFAULT (BIT(0))
/* GENI_CGC_CTRL fields */
#define CFG_AHB_CLK_CGC_ON (BIT(0))
#define CFG_AHB_WR_ACLK_CGC_ON (BIT(1))
#define DATA_AHB_CLK_CGC_ON (BIT(2))
#define SCLK_CGC_ON (BIT(3))
#define TX_CLK_CGC_ON (BIT(4))
#define RX_CLK_CGC_ON (BIT(5))
#define EXT_CLK_CGC_ON (BIT(6))
#define PROG_RAM_HCLK_OFF (BIT(8))
#define PROG_RAM_SCLK_OFF (BIT(9))
#define DEFAULT_CGC_EN (GENMASK(6, 0))
/* GENI_STATUS fields */
#define M_GENI_CMD_ACTIVE (BIT(0))
#define S_GENI_CMD_ACTIVE (BIT(12))
/* GENI_SER_M_CLK_CFG/GENI_SER_S_CLK_CFG */
#define SER_CLK_EN (BIT(0))
#define CLK_DIV_MSK (GENMASK(15, 4))
#define CLK_DIV_SHFT (4)
/* CLK_CTRL_RO fields */
/* FIFO_IF_DISABLE_RO fields */
#define FIFO_IF_DISABLE (BIT(0))
/* FW_REVISION_RO fields */
#define FW_REV_PROTOCOL_MSK (GENMASK(15, 8))
#define FW_REV_PROTOCOL_SHFT (8)
/* GENI_CLK_SEL fields */
#define CLK_SEL_MSK (GENMASK(2, 0))
/* SE_GENI_DMA_MODE_EN */
#define GENI_DMA_MODE_EN (BIT(0))
/* GENI_M_CMD0 fields */
#define M_OPCODE_MSK (GENMASK(31, 27))
#define M_OPCODE_SHFT (27)
#define M_PARAMS_MSK (GENMASK(26, 0))
/* GENI_M_CMD_CTRL_REG */
#define M_GENI_CMD_CANCEL BIT(2)
#define M_GENI_CMD_ABORT BIT(1)
#define M_GENI_DISABLE BIT(0)
/* GENI_S_CMD0 fields */
#define S_OPCODE_MSK (GENMASK(31, 27))
#define S_OPCODE_SHFT (27)
#define S_PARAMS_MSK (GENMASK(26, 0))
/* GENI_S_CMD_CTRL_REG */
#define S_GENI_CMD_CANCEL (BIT(2))
#define S_GENI_CMD_ABORT (BIT(1))
#define S_GENI_DISABLE (BIT(0))
/* GENI_M_IRQ_EN fields */
#define M_CMD_DONE_EN (BIT(0))
#define M_CMD_OVERRUN_EN (BIT(1))
#define M_ILLEGAL_CMD_EN (BIT(2))
#define M_CMD_FAILURE_EN (BIT(3))
#define M_CMD_CANCEL_EN (BIT(4))
#define M_CMD_ABORT_EN (BIT(5))
#define M_TIMESTAMP_EN (BIT(6))
#define M_RX_IRQ_EN (BIT(7))
#define M_GP_SYNC_IRQ_0_EN (BIT(8))
#define M_GP_IRQ_0_EN (BIT(9))
#define M_GP_IRQ_1_EN (BIT(10))
#define M_GP_IRQ_2_EN (BIT(11))
#define M_GP_IRQ_3_EN (BIT(12))
#define M_GP_IRQ_4_EN (BIT(13))
#define M_GP_IRQ_5_EN (BIT(14))
#define M_IO_DATA_DEASSERT_EN (BIT(22))
#define M_IO_DATA_ASSERT_EN (BIT(23))
#define M_RX_FIFO_RD_ERR_EN (BIT(24))
#define M_RX_FIFO_WR_ERR_EN (BIT(25))
#define M_RX_FIFO_WATERMARK_EN (BIT(26))
#define M_RX_FIFO_LAST_EN (BIT(27))
#define M_TX_FIFO_RD_ERR_EN (BIT(28))
#define M_TX_FIFO_WR_ERR_EN (BIT(29))
#define M_TX_FIFO_WATERMARK_EN (BIT(30))
#define M_SEC_IRQ_EN (BIT(31))
#define M_COMMON_GENI_M_IRQ_EN (GENMASK(6, 1) | \
M_IO_DATA_DEASSERT_EN | \
M_IO_DATA_ASSERT_EN | M_RX_FIFO_RD_ERR_EN | \
M_RX_FIFO_WR_ERR_EN | M_TX_FIFO_RD_ERR_EN | \
M_TX_FIFO_WR_ERR_EN)
/* GENI_S_IRQ_EN fields */
#define S_CMD_DONE_EN (BIT(0))
#define S_CMD_OVERRUN_EN (BIT(1))
#define S_ILLEGAL_CMD_EN (BIT(2))
#define S_CMD_FAILURE_EN (BIT(3))
#define S_CMD_CANCEL_EN (BIT(4))
#define S_CMD_ABORT_EN (BIT(5))
#define S_GP_SYNC_IRQ_0_EN (BIT(8))
#define S_GP_IRQ_0_EN (BIT(9))
#define S_GP_IRQ_1_EN (BIT(10))
#define S_GP_IRQ_2_EN (BIT(11))
#define S_GP_IRQ_3_EN (BIT(12))
#define S_GP_IRQ_4_EN (BIT(13))
#define S_GP_IRQ_5_EN (BIT(14))
#define S_IO_DATA_DEASSERT_EN (BIT(22))
#define S_IO_DATA_ASSERT_EN (BIT(23))
#define S_RX_FIFO_RD_ERR_EN (BIT(24))
#define S_RX_FIFO_WR_ERR_EN (BIT(25))
#define S_RX_FIFO_WATERMARK_EN (BIT(26))
#define S_RX_FIFO_LAST_EN (BIT(27))
#define S_COMMON_GENI_S_IRQ_EN (GENMASK(5, 1) | GENMASK(13, 9) | \
S_RX_FIFO_RD_ERR_EN | S_RX_FIFO_WR_ERR_EN)
/* GENI_/TX/RX/RX_RFR/_WATERMARK_REG fields */
#define WATERMARK_MSK (GENMASK(5, 0))
/* GENI_TX_FIFO_STATUS fields */
#define TX_FIFO_WC (GENMASK(27, 0))
/* GENI_RX_FIFO_STATUS fields */
#define RX_LAST (BIT(31))
#define RX_LAST_BYTE_VALID_MSK (GENMASK(30, 28))
#define RX_LAST_BYTE_VALID_SHFT (28)
#define RX_FIFO_WC_MSK (GENMASK(24, 0))
/* SE_GSI_EVENT_EN fields */
#define DMA_RX_EVENT_EN (BIT(0))
#define DMA_TX_EVENT_EN (BIT(1))
#define GENI_M_EVENT_EN (BIT(2))
#define GENI_S_EVENT_EN (BIT(3))
/* SE_GENI_IOS fields */
#define IO2_DATA_IN (BIT(1))
#define RX_DATA_IN (BIT(0))
/* SE_IRQ_EN fields */
#define DMA_RX_IRQ_EN (BIT(0))
#define DMA_TX_IRQ_EN (BIT(1))
#define GENI_M_IRQ_EN (BIT(2))
#define GENI_S_IRQ_EN (BIT(3))
/* SE_HW_PARAM_0 fields */
#define TX_FIFO_WIDTH_MSK (GENMASK(29, 24))
#define TX_FIFO_WIDTH_SHFT (24)
#define TX_FIFO_DEPTH_MSK (GENMASK(21, 16))
#define TX_FIFO_DEPTH_SHFT (16)
/* SE_HW_PARAM_1 fields */
#define RX_FIFO_WIDTH_MSK (GENMASK(29, 24))
#define RX_FIFO_WIDTH_SHFT (24)
#define RX_FIFO_DEPTH_MSK (GENMASK(21, 16))
#define RX_FIFO_DEPTH_SHFT (16)
/* SE_DMA_GENERAL_CFG */
#define DMA_RX_CLK_CGC_ON (BIT(0))
#define DMA_TX_CLK_CGC_ON (BIT(1))
#define DMA_AHB_SLV_CFG_ON (BIT(2))
#define AHB_SEC_SLV_CLK_CGC_ON (BIT(3))
#define DUMMY_RX_NON_BUFFERABLE (BIT(4))
#define RX_DMA_ZERO_PADDING_EN (BIT(5))
#define RX_DMA_IRQ_DELAY_MSK (GENMASK(8, 6))
#define RX_DMA_IRQ_DELAY_SHFT (6)
#define SE_DMA_TX_PTR_L (0xC30)
#define SE_DMA_TX_PTR_H (0xC34)
#define SE_DMA_TX_ATTR (0xC38)
#define SE_DMA_TX_LEN (0xC3C)
#define SE_DMA_TX_IRQ_STAT (0xC40)
#define SE_DMA_TX_IRQ_CLR (0xC44)
#define SE_DMA_TX_IRQ_EN (0xC48)
#define SE_DMA_TX_IRQ_EN_SET (0xC4C)
#define SE_DMA_TX_IRQ_EN_CLR (0xC50)
#define SE_DMA_TX_LEN_IN (0xC54)
#define SE_DMA_TX_FSM_RST (0xC58)
#define SE_DMA_TX_MAX_BURST (0xC5C)
#define SE_DMA_RX_PTR_L (0xD30)
#define SE_DMA_RX_PTR_H (0xD34)
#define SE_DMA_RX_ATTR (0xD38)
#define SE_DMA_RX_LEN (0xD3C)
#define SE_DMA_RX_IRQ_STAT (0xD40)
#define SE_DMA_RX_IRQ_CLR (0xD44)
#define SE_DMA_RX_IRQ_EN (0xD48)
#define SE_DMA_RX_IRQ_EN_SET (0xD4C)
#define SE_DMA_RX_IRQ_EN_CLR (0xD50)
#define SE_DMA_RX_LEN_IN (0xD54)
#define SE_DMA_RX_FSM_RST (0xD58)
#define SE_DMA_RX_MAX_BURST (0xD5C)
#define SE_DMA_RX_FLUSH (0xD60)
/* SE_DMA_TX_IRQ_STAT Register fields */
#define TX_DMA_DONE (BIT(0))
#define TX_EOT (BIT(1))
#define TX_SBE (BIT(2))
#define TX_RESET_DONE (BIT(3))
/* SE_DMA_RX_IRQ_STAT Register fields */
#define RX_DMA_DONE (BIT(0))
#define RX_EOT (BIT(1))
#define RX_SBE (BIT(2))
#define RX_RESET_DONE (BIT(3))
#define RX_FLUSH_DONE (BIT(4))
#define RX_GENI_GP_IRQ (GENMASK(10, 5))
#define RX_GENI_CANCEL_IRQ (BIT(11))
#define RX_GENI_GP_IRQ_EXT (GENMASK(13, 12))
#define DEFAULT_BUS_WIDTH (4)
#define DEFAULT_SE_CLK (19200000)
/* GSI TRE fields */
/* Packing fields */
#define GSI_TX_PACK_EN (BIT(0))
#define GSI_RX_PACK_EN (BIT(1))
#define GSI_PRESERVE_PACK (BIT(2))
#define GENI_SE_ERR(log_ctx, print, dev, x...) do { \
if (log_ctx) \
ipc_log_string(log_ctx, x); \
if (print) { \
if (dev) \
dev_err((dev), x); \
else \
pr_err(x); \
} \
} while (0)
#define GENI_SE_DBG(log_ctx, print, dev, x...) do { \
if (log_ctx) \
ipc_log_string(log_ctx, x); \
if (print) { \
if (dev) \
dev_dbg((dev), x); \
else \
pr_debug(x); \
} \
} while (0)
#ifdef CONFIG_QCOM_GENI_SE
/**
* geni_read_reg_nolog() - Helper function to read from a GENI register
* @base: Base address of the serial engine's register block.
* @offset: Offset within the serial engine's register block.
*
* Return: Return the contents of the register.
*/
unsigned int geni_read_reg_nolog(void __iomem *base, int offset);
/**
* geni_write_reg_nolog() - Helper function to write into a GENI register
* @value: Value to be written into the register.
* @base: Base address of the serial engine's register block.
* @offset: Offset within the serial engine's register block.
*/
void geni_write_reg_nolog(unsigned int value, void __iomem *base, int offset);
/**
* geni_read_reg() - Helper function to read from a GENI register
* @base: Base address of the serial engine's register block.
* @offset: Offset within the serial engine's register block.
*
* Return: Return the contents of the register.
*/
unsigned int geni_read_reg(void __iomem *base, int offset);
/**
* geni_write_reg() - Helper function to write into a GENI register
* @value: Value to be written into the register.
* @base: Base address of the serial engine's register block.
* @offset: Offset within the serial engine's register block.
*/
void geni_write_reg(unsigned int value, void __iomem *base, int offset);
/**
* get_se_proto() - Read the protocol configured for a serial engine
* @base: Base address of the serial engine's register block.
*
* Return: Protocol value as configured in the serial engine.
*/
int get_se_proto(void __iomem *base);
/**
* geni_se_init() - Initialize the GENI Serial Engine
* @base: Base address of the serial engine's register block.
* @rx_wm: Receive watermark to be configured.
* @rx_rfr_wm: Ready-for-receive watermark to be configured.
*
* This function is used to initialize the GENI serial engine, configure
* the transfer mode, receive watermark and ready-for-receive watermarks.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int geni_se_init(void __iomem *base, unsigned int rx_wm, unsigned int rx_rfr);
/**
* geni_se_select_mode() - Select the serial engine transfer mode
* @base: Base address of the serial engine's register block.
* @mode: Transfer mode to be selected.
*
* Return: 0 on success, standard Linux error codes on failure.
*/
int geni_se_select_mode(void __iomem *base, int mode);
/**
* geni_setup_m_cmd() - Setup the primary sequencer
* @base: Base address of the serial engine's register block.
* @cmd: Command/Operation to setup in the primary sequencer.
* @params: Parameter for the sequencer command.
*
* This function is used to configure the primary sequencer with the
* command and its assoicated parameters.
*/
void geni_setup_m_cmd(void __iomem *base, u32 cmd, u32 params);
/**
* geni_setup_s_cmd() - Setup the secondary sequencer
* @base: Base address of the serial engine's register block.
* @cmd: Command/Operation to setup in the secondary sequencer.
* @params: Parameter for the sequencer command.
*
* This function is used to configure the secondary sequencer with the
* command and its assoicated parameters.
*/
void geni_setup_s_cmd(void __iomem *base, u32 cmd, u32 params);
/**
* geni_cancel_m_cmd() - Cancel the command configured in the primary sequencer
* @base: Base address of the serial engine's register block.
*
* This function is used to cancel the currently configured command in the
* primary sequencer.
*/
void geni_cancel_m_cmd(void __iomem *base);
/**
* geni_cancel_s_cmd() - Cancel the command configured in the secondary
* sequencer
* @base: Base address of the serial engine's register block.
*
* This function is used to cancel the currently configured command in the
* secondary sequencer.
*/
void geni_cancel_s_cmd(void __iomem *base);
/**
* geni_abort_m_cmd() - Abort the command configured in the primary sequencer
* @base: Base address of the serial engine's register block.
*
* This function is used to force abort the currently configured command in the
* primary sequencer.
*/
void geni_abort_m_cmd(void __iomem *base);
/**
* geni_abort_s_cmd() - Abort the command configured in the secondary
* sequencer
* @base: Base address of the serial engine's register block.
*
* This function is used to force abort the currently configured command in the
* secondary sequencer.
*/
void geni_abort_s_cmd(void __iomem *base);
/**
* get_tx_fifo_depth() - Get the TX fifo depth of the serial engine
* @base: Base address of the serial engine's register block.
*
* This function is used to get the depth i.e. number of elements in the
* TX fifo of the serial engine.
*
* Return: TX fifo depth in units of FIFO words.
*/
int get_tx_fifo_depth(void __iomem *base);
/**
* get_tx_fifo_width() - Get the TX fifo width of the serial engine
* @base: Base address of the serial engine's register block.
*
* This function is used to get the width i.e. word size per element in the
* TX fifo of the serial engine.
*
* Return: TX fifo width in bits.
*/
int get_tx_fifo_width(void __iomem *base);
/**
* get_rx_fifo_depth() - Get the RX fifo depth of the serial engine
* @base: Base address of the serial engine's register block.
*
* This function is used to get the depth i.e. number of elements in the
* RX fifo of the serial engine.
*
* Return: RX fifo depth in units of FIFO words.
*/
int get_rx_fifo_depth(void __iomem *base);
/**
* se_get_packing_config() - Get the packing configuration based on input
* @bpw: Bits of data per transfer word.
* @pack_words: Number of words per fifo element.
* @msb_to_lsb: Transfer from MSB to LSB or vice-versa.
* @cfg0: Output buffer to hold the first half of configuration.
* @cfg1: Output buffer to hold the second half of configuration.
*
* This function is used to calculate the packing configuration based on
* the input packing requirement and the configuration logic.
*/
void se_get_packing_config(int bpw, int pack_words, bool msb_to_lsb,
unsigned long *cfg0, unsigned long *cfg1);
/**
* se_config_packing() - Packing configuration of the serial engine
* @base: Base address of the serial engine's register block.
* @bpw: Bits of data per transfer word.
* @pack_words: Number of words per fifo element.
* @msb_to_lsb: Transfer from MSB to LSB or vice-versa.
*
* This function is used to configure the packing rules for the current
* transfer.
*/
void se_config_packing(void __iomem *base, int bpw, int pack_words,
bool msb_to_lsb);
/**
* se_geni_resources_off() - Turn off resources associated with the serial
* engine
* @rsc: Handle to resources associated with the serial engine.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int se_geni_resources_off(struct se_geni_rsc *rsc);
/**
* se_geni_resources_on() - Turn on resources associated with the serial
* engine
* @rsc: Handle to resources associated with the serial engine.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int se_geni_resources_on(struct se_geni_rsc *rsc);
/**
* geni_se_resources_init() - Init the SE resource structure
* @rsc: SE resource structure to be initialized.
* @ab: Initial Average bus bandwidth request value.
* @ib: Initial Instantaneous bus bandwidth request value.
*
* Return: 0 on success, standard Linux error codes on failure.
*/
int geni_se_resources_init(struct se_geni_rsc *rsc,
unsigned long ab, unsigned long ib);
/**
* geni_se_clk_tbl_get() - Get the clock table to program DFS
* @rsc: Resource for which the clock table is requested.
* @tbl: Table in which the output is returned.
*
* This function is called by the protocol drivers to determine the different
* clock frequencies supported by Serail Engine Core Clock. The protocol
* drivers use the output to determine the clock frequency index to be
* programmed into DFS.
*
* Return: number of valid performance levels in the table on success,
* standard Linux error codes on failure.
*/
int geni_se_clk_tbl_get(struct se_geni_rsc *rsc, unsigned long **tbl);
/**
* geni_se_clk_freq_match() - Get the matching or closest SE clock frequency
* @rsc: Resource for which the clock frequency is requested.
* @req_freq: Requested clock frequency.
* @index: Index of the resultant frequency in the table.
* @res_freq: Resultant frequency which matches or is closer to the
* requested frequency.
* @exact: Flag to indicate exact multiple requirement of the requested
* frequency .
*
* This function is called by the protocol drivers to determine the matching
* or closest frequency of the Serial Engine clock to be selected in order
* to meet the performance requirements.
*
* Return: 0 on success, standard Linux error codes on failure.
*/
int geni_se_clk_freq_match(struct se_geni_rsc *rsc, unsigned long req_freq,
unsigned int *index, unsigned long *res_freq,
bool exact);
/**
* geni_se_tx_dma_prep() - Prepare the Serial Engine for TX DMA transfer
* @wrapper_dev: QUPv3 Wrapper Device to which the TX buffer is mapped.
* @base: Base address of the SE register block.
* @tx_buf: Pointer to the TX buffer.
* @tx_len: Length of the TX buffer.
* @tx_dma: Pointer to store the mapped DMA address.
*
* This function is used to prepare the buffers for DMA TX.
*
* Return: 0 on success, standard Linux error codes on error/failure.
*/
int geni_se_tx_dma_prep(struct device *wrapper_dev, void __iomem *base,
void *tx_buf, int tx_len, dma_addr_t *tx_dma);
/**
* geni_se_rx_dma_prep() - Prepare the Serial Engine for RX DMA transfer
* @wrapper_dev: QUPv3 Wrapper Device to which the TX buffer is mapped.
* @base: Base address of the SE register block.
* @rx_buf: Pointer to the RX buffer.
* @rx_len: Length of the RX buffer.
* @rx_dma: Pointer to store the mapped DMA address.
*
* This function is used to prepare the buffers for DMA RX.
*
* Return: 0 on success, standard Linux error codes on error/failure.
*/
int geni_se_rx_dma_prep(struct device *wrapper_dev, void __iomem *base,
void *rx_buf, int rx_len, dma_addr_t *rx_dma);
/**
* geni_se_tx_dma_unprep() - Unprepare the Serial Engine after TX DMA transfer
* @wrapper_dev: QUPv3 Wrapper Device to which the TX buffer is mapped.
* @tx_dma: DMA address of the TX buffer.
* @tx_len: Length of the TX buffer.
*
* This function is used to unprepare the DMA buffers after DMA TX.
*/
void geni_se_tx_dma_unprep(struct device *wrapper_dev,
dma_addr_t tx_dma, int tx_len);
/**
* geni_se_rx_dma_unprep() - Unprepare the Serial Engine after RX DMA transfer
* @wrapper_dev: QUPv3 Wrapper Device to which the TX buffer is mapped.
* @rx_dma: DMA address of the RX buffer.
* @rx_len: Length of the RX buffer.
*
* This function is used to unprepare the DMA buffers after DMA RX.
*/
void geni_se_rx_dma_unprep(struct device *wrapper_dev,
dma_addr_t rx_dma, int rx_len);
/**
* geni_se_qupv3_hw_version() - Read the QUPv3 Hardware version
* @wrapper_dev: Pointer to the corresponding QUPv3 wrapper core.
* @major: Buffer for Major Version field.
* @minor: Buffer for Minor Version field.
* @step: Buffer for Step Version field.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int geni_se_qupv3_hw_version(struct device *wrapper_dev, unsigned int *major,
unsigned int *minor, unsigned int *step);
/**
* geni_se_iommu_map_buf() - Map a single buffer into QUPv3 context bank
* @wrapper_dev: Pointer to the corresponding QUPv3 wrapper core.
* @iova: Pointer in which the mapped virtual address is stored.
* @buf: Address of the buffer that needs to be mapped.
* @size: Size of the buffer.
* @dir: Direction of the DMA transfer.
*
* This function is used to map an already allocated buffer into the
* QUPv3 context bank device space.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int geni_se_iommu_map_buf(struct device *wrapper_dev, dma_addr_t *iova,
void *buf, size_t size, enum dma_data_direction dir);
/**
* geni_se_iommu_alloc_buf() - Allocate & map a single buffer into QUPv3
* context bank
* @wrapper_dev: Pointer to the corresponding QUPv3 wrapper core.
* @iova: Pointer in which the mapped virtual address is stored.
* @size: Size of the buffer.
*
* This function is used to allocate a buffer and map it into the
* QUPv3 context bank device space.
*
* Return: address of the buffer on success, NULL or ERR_PTR on
* failure/error.
*/
void *geni_se_iommu_alloc_buf(struct device *wrapper_dev, dma_addr_t *iova,
size_t size);
/**
* geni_se_iommu_unmap_buf() - Unmap a single buffer from QUPv3 context bank
* @wrapper_dev: Pointer to the corresponding QUPv3 wrapper core.
* @iova: Pointer in which the mapped virtual address is stored.
* @size: Size of the buffer.
* @dir: Direction of the DMA transfer.
*
* This function is used to unmap an already mapped buffer from the
* QUPv3 context bank device space.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int geni_se_iommu_unmap_buf(struct device *wrapper_dev, dma_addr_t *iova,
size_t size, enum dma_data_direction dir);
/**
* geni_se_iommu_free_buf() - Unmap & free a single buffer from QUPv3
* context bank
* @wrapper_dev: Pointer to the corresponding QUPv3 wrapper core.
* @iova: Pointer in which the mapped virtual address is stored.
* @buf: Address of the buffer.
* @size: Size of the buffer.
*
* This function is used to unmap and free a buffer from the
* QUPv3 context bank device space.
*
* Return: 0 on success, standard Linux error codes on failure/error.
*/
int geni_se_iommu_free_buf(struct device *wrapper_dev, dma_addr_t *iova,
void *buf, size_t size);
#else
static inline unsigned int geni_read_reg_nolog(void __iomem *base, int offset)
{
return 0;
}
static inline void geni_write_reg_nolog(unsigned int value,
void __iomem *base, int offset)
{
}
static inline unsigned int geni_read_reg(void __iomem *base, int offset)
{
return 0;
}
static inline void geni_write_reg(unsigned int value, void __iomem *base,
int offset)
{
}
static inline int get_se_proto(void __iomem *base)
{
return -ENXIO;
}
static inline int geni_se_init(void __iomem *base,
unsigned int rx_wm, unsigned int rx_rfr)
{
return -ENXIO;
}
static inline int geni_se_select_mode(void __iomem *base, int mode)
{
return -ENXIO;
}
static inline void geni_setup_m_cmd(void __iomem *base, u32 cmd,
u32 params)
{
}
static inline void geni_setup_s_cmd(void __iomem *base, u32 cmd,
u32 params)
{
}
static inline void geni_cancel_m_cmd(void __iomem *base)
{
}
static inline void geni_cancel_s_cmd(void __iomem *base)
{
}
static inline void geni_abort_m_cmd(void __iomem *base)
{
}
static inline void geni_abort_s_cmd(void __iomem *base)
{
}
static inline int get_tx_fifo_depth(void __iomem *base)
{
return -ENXIO;
}
static inline int get_tx_fifo_width(void __iomem *base)
{
return -ENXIO;
}
static inline int get_rx_fifo_depth(void __iomem *base)
{
return -ENXIO;
}
static inline void se_get_packing_config(int bpw, int pack_words,
bool msb_to_lsb, unsigned long *cfg0,
unsigned long *cfg1)
{
}
static inline void se_config_packing(void __iomem *base, int bpw,
int pack_words, bool msb_to_lsb)
{
}
static inline int se_geni_resources_on(struct se_geni_rsc *rsc)
{
return -ENXIO;
}
static inline int se_geni_resources_off(struct se_geni_rsc *rsc)
{
return -ENXIO;
}
static inline int geni_se_resources_init(struct se_geni_rsc *rsc,
unsigned long ab, unsigned long ib)
{
return -ENXIO;
}
static inline int geni_se_clk_tbl_get(struct se_geni_rsc *rsc,
unsigned long **tbl)
{
return -ENXIO;
}
static inline int geni_se_clk_freq_match(struct se_geni_rsc *rsc,
unsigned long req_freq, unsigned int *index,
unsigned long *res_freq, bool exact)
{
return -ENXIO;
}
static inline int geni_se_tx_dma_prep(struct device *wrapper_dev,
void __iomem *base, void *tx_buf, int tx_len, dma_addr_t *tx_dma)
{
return -ENXIO;
}
static inline int geni_se_rx_dma_prep(struct device *wrapper_dev,
void __iomem *base, void *rx_buf, int rx_len, dma_addr_t *rx_dma)
{
return -ENXIO;
}
static inline void geni_se_tx_dma_unprep(struct device *wrapper_dev,
dma_addr_t tx_dma, int tx_len)
{
}
static inline void geni_se_rx_dma_unprep(struct device *wrapper_dev,
dma_addr_t rx_dma, int rx_len)
{
}
static inline int geni_se_qupv3_hw_version(struct device *wrapper_dev,
unsigned int *major, unsigned int *minor, unsigned int *step)
{
return -ENXIO;
}
static inline int geni_se_iommu_map_buf(struct device *wrapper_dev,
dma_addr_t *iova, void *buf, size_t size, enum dma_data_direction dir)
{
return -ENXIO;
}
static inline void *geni_se_iommu_alloc_buf(struct device *wrapper_dev,
dma_addr_t *iova, size_t size)
{
return NULL;
}
static inline int geni_se_iommu_unmap_buf(struct device *wrapper_dev,
dma_addr_t *iova, size_t size, enum dma_data_direction dir)
{
return -ENXIO;
}
static inline int geni_se_iommu_free_buf(struct device *wrapper_dev,
dma_addr_t *iova, void *buf, size_t size)
{
return -ENXIO;
}
#endif
#endif