| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. |
| */ |
| |
| #ifndef _LINUX_QCOM_GENI_SE |
| #define _LINUX_QCOM_GENI_SE |
| |
| #include <linux/interconnect.h> |
| |
| /* Transfer mode supported by GENI Serial Engines */ |
| enum geni_se_xfer_mode { |
| GENI_SE_INVALID, |
| GENI_SE_FIFO, |
| GENI_SE_DMA, |
| }; |
| |
| /* Protocols supported by GENI Serial Engines */ |
| enum geni_se_protocol_type { |
| GENI_SE_NONE, |
| GENI_SE_SPI, |
| GENI_SE_UART, |
| GENI_SE_I2C, |
| GENI_SE_I3C, |
| }; |
| |
| struct geni_wrapper; |
| struct clk; |
| |
| enum geni_icc_path_index { |
| GENI_TO_CORE, |
| CPU_TO_GENI, |
| GENI_TO_DDR |
| }; |
| |
| struct geni_icc_path { |
| struct icc_path *path; |
| unsigned int avg_bw; |
| }; |
| |
| /** |
| * struct geni_se - GENI Serial Engine |
| * @base: Base Address of the Serial Engine's register block |
| * @dev: Pointer to the Serial Engine device |
| * @wrapper: Pointer to the parent QUP Wrapper core |
| * @clk: Handle to the core serial engine clock |
| * @num_clk_levels: Number of valid clock levels in clk_perf_tbl |
| * @clk_perf_tbl: Table of clock frequency input to serial engine clock |
| * @icc_paths: Array of ICC paths for SE |
| * @opp_table: Pointer to the OPP table |
| * @has_opp_table: Specifies if the SE has an OPP table |
| */ |
| struct geni_se { |
| void __iomem *base; |
| struct device *dev; |
| struct geni_wrapper *wrapper; |
| struct clk *clk; |
| unsigned int num_clk_levels; |
| unsigned long *clk_perf_tbl; |
| struct geni_icc_path icc_paths[3]; |
| struct opp_table *opp_table; |
| bool has_opp_table; |
| }; |
| |
| /* Common SE registers */ |
| #define GENI_FORCE_DEFAULT_REG 0x20 |
| #define SE_GENI_STATUS 0x40 |
| #define GENI_SER_M_CLK_CFG 0x48 |
| #define GENI_SER_S_CLK_CFG 0x4c |
| #define GENI_FW_REVISION_RO 0x68 |
| #define SE_GENI_CLK_SEL 0x7c |
| #define SE_GENI_DMA_MODE_EN 0x258 |
| #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_DMA_TX_IRQ_STAT 0xc40 |
| #define SE_DMA_TX_IRQ_CLR 0xc44 |
| #define SE_DMA_TX_FSM_RST 0xc58 |
| #define SE_DMA_RX_IRQ_STAT 0xd40 |
| #define SE_DMA_RX_IRQ_CLR 0xd44 |
| #define SE_DMA_RX_FSM_RST 0xd58 |
| #define SE_HW_PARAM_0 0xe24 |
| #define SE_HW_PARAM_1 0xe28 |
| |
| /* GENI_FORCE_DEFAULT_REG fields */ |
| #define FORCE_DEFAULT BIT(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 |
| |
| /* GENI_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_GENI_IOS fields */ |
| #define IO2_DATA_IN BIT(1) |
| #define RX_DATA_IN BIT(0) |
| |
| /* 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) |
| |
| /* 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 |
| |
| #define HW_VER_MAJOR_MASK GENMASK(31, 28) |
| #define HW_VER_MAJOR_SHFT 28 |
| #define HW_VER_MINOR_MASK GENMASK(27, 16) |
| #define HW_VER_MINOR_SHFT 16 |
| #define HW_VER_STEP_MASK GENMASK(15, 0) |
| |
| #define GENI_SE_VERSION_MAJOR(ver) ((ver & HW_VER_MAJOR_MASK) >> HW_VER_MAJOR_SHFT) |
| #define GENI_SE_VERSION_MINOR(ver) ((ver & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT) |
| #define GENI_SE_VERSION_STEP(ver) (ver & HW_VER_STEP_MASK) |
| |
| /* QUP SE VERSION value for major number 2 and minor number 5 */ |
| #define QUP_SE_VERSION_2_5 0x20050000 |
| |
| /* |
| * Define bandwidth thresholds that cause the underlying Core 2X interconnect |
| * clock to run at the named frequency. These baseline values are recommended |
| * by the hardware team, and are not dynamically scaled with GENI bandwidth |
| * beyond basic on/off. |
| */ |
| #define CORE_2X_19_2_MHZ 960 |
| #define CORE_2X_50_MHZ 2500 |
| #define CORE_2X_100_MHZ 5000 |
| #define CORE_2X_150_MHZ 7500 |
| #define CORE_2X_200_MHZ 10000 |
| #define CORE_2X_236_MHZ 16383 |
| |
| #define GENI_DEFAULT_BW Bps_to_icc(1000) |
| |
| #if IS_ENABLED(CONFIG_QCOM_GENI_SE) |
| |
| u32 geni_se_get_qup_hw_version(struct geni_se *se); |
| |
| /** |
| * geni_se_read_proto() - Read the protocol configured for a serial engine |
| * @se: Pointer to the concerned serial engine. |
| * |
| * Return: Protocol value as configured in the serial engine. |
| */ |
| static inline u32 geni_se_read_proto(struct geni_se *se) |
| { |
| u32 val; |
| |
| val = readl_relaxed(se->base + GENI_FW_REVISION_RO); |
| |
| return (val & FW_REV_PROTOCOL_MSK) >> FW_REV_PROTOCOL_SHFT; |
| } |
| |
| /** |
| * geni_se_setup_m_cmd() - Setup the primary sequencer |
| * @se: Pointer to the concerned serial engine. |
| * @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 associated parameters. |
| */ |
| static inline void geni_se_setup_m_cmd(struct geni_se *se, u32 cmd, u32 params) |
| { |
| u32 m_cmd; |
| |
| m_cmd = (cmd << M_OPCODE_SHFT) | (params & M_PARAMS_MSK); |
| writel(m_cmd, se->base + SE_GENI_M_CMD0); |
| } |
| |
| /** |
| * geni_se_setup_s_cmd() - Setup the secondary sequencer |
| * @se: Pointer to the concerned serial engine. |
| * @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 associated parameters. |
| */ |
| static inline void geni_se_setup_s_cmd(struct geni_se *se, u32 cmd, u32 params) |
| { |
| u32 s_cmd; |
| |
| s_cmd = readl_relaxed(se->base + SE_GENI_S_CMD0); |
| s_cmd &= ~(S_OPCODE_MSK | S_PARAMS_MSK); |
| s_cmd |= (cmd << S_OPCODE_SHFT); |
| s_cmd |= (params & S_PARAMS_MSK); |
| writel(s_cmd, se->base + SE_GENI_S_CMD0); |
| } |
| |
| /** |
| * geni_se_cancel_m_cmd() - Cancel the command configured in the primary |
| * sequencer |
| * @se: Pointer to the concerned serial engine. |
| * |
| * This function is used to cancel the currently configured command in the |
| * primary sequencer. |
| */ |
| static inline void geni_se_cancel_m_cmd(struct geni_se *se) |
| { |
| writel_relaxed(M_GENI_CMD_CANCEL, se->base + SE_GENI_M_CMD_CTRL_REG); |
| } |
| |
| /** |
| * geni_se_cancel_s_cmd() - Cancel the command configured in the secondary |
| * sequencer |
| * @se: Pointer to the concerned serial engine. |
| * |
| * This function is used to cancel the currently configured command in the |
| * secondary sequencer. |
| */ |
| static inline void geni_se_cancel_s_cmd(struct geni_se *se) |
| { |
| writel_relaxed(S_GENI_CMD_CANCEL, se->base + SE_GENI_S_CMD_CTRL_REG); |
| } |
| |
| /** |
| * geni_se_abort_m_cmd() - Abort the command configured in the primary sequencer |
| * @se: Pointer to the concerned serial engine. |
| * |
| * This function is used to force abort the currently configured command in the |
| * primary sequencer. |
| */ |
| static inline void geni_se_abort_m_cmd(struct geni_se *se) |
| { |
| writel_relaxed(M_GENI_CMD_ABORT, se->base + SE_GENI_M_CMD_CTRL_REG); |
| } |
| |
| /** |
| * geni_se_abort_s_cmd() - Abort the command configured in the secondary |
| * sequencer |
| * @se: Pointer to the concerned serial engine. |
| * |
| * This function is used to force abort the currently configured command in the |
| * secondary sequencer. |
| */ |
| static inline void geni_se_abort_s_cmd(struct geni_se *se) |
| { |
| writel_relaxed(S_GENI_CMD_ABORT, se->base + SE_GENI_S_CMD_CTRL_REG); |
| } |
| |
| /** |
| * geni_se_get_tx_fifo_depth() - Get the TX fifo depth of the serial engine |
| * @se: Pointer to the concerned serial engine. |
| * |
| * 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. |
| */ |
| static inline u32 geni_se_get_tx_fifo_depth(struct geni_se *se) |
| { |
| u32 val; |
| |
| val = readl_relaxed(se->base + SE_HW_PARAM_0); |
| |
| return (val & TX_FIFO_DEPTH_MSK) >> TX_FIFO_DEPTH_SHFT; |
| } |
| |
| /** |
| * geni_se_get_tx_fifo_width() - Get the TX fifo width of the serial engine |
| * @se: Pointer to the concerned serial engine. |
| * |
| * 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 |
| */ |
| static inline u32 geni_se_get_tx_fifo_width(struct geni_se *se) |
| { |
| u32 val; |
| |
| val = readl_relaxed(se->base + SE_HW_PARAM_0); |
| |
| return (val & TX_FIFO_WIDTH_MSK) >> TX_FIFO_WIDTH_SHFT; |
| } |
| |
| /** |
| * geni_se_get_rx_fifo_depth() - Get the RX fifo depth of the serial engine |
| * @se: Pointer to the concerned serial engine. |
| * |
| * 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 |
| */ |
| static inline u32 geni_se_get_rx_fifo_depth(struct geni_se *se) |
| { |
| u32 val; |
| |
| val = readl_relaxed(se->base + SE_HW_PARAM_1); |
| |
| return (val & RX_FIFO_DEPTH_MSK) >> RX_FIFO_DEPTH_SHFT; |
| } |
| |
| void geni_se_init(struct geni_se *se, u32 rx_wm, u32 rx_rfr); |
| |
| void geni_se_select_mode(struct geni_se *se, enum geni_se_xfer_mode mode); |
| |
| void geni_se_config_packing(struct geni_se *se, int bpw, int pack_words, |
| bool msb_to_lsb, bool tx_cfg, bool rx_cfg); |
| |
| int geni_se_resources_off(struct geni_se *se); |
| |
| int geni_se_resources_on(struct geni_se *se); |
| |
| int geni_se_clk_tbl_get(struct geni_se *se, unsigned long **tbl); |
| |
| int geni_se_clk_freq_match(struct geni_se *se, unsigned long req_freq, |
| unsigned int *index, unsigned long *res_freq, |
| bool exact); |
| |
| int geni_se_tx_dma_prep(struct geni_se *se, void *buf, size_t len, |
| dma_addr_t *iova); |
| |
| int geni_se_rx_dma_prep(struct geni_se *se, void *buf, size_t len, |
| dma_addr_t *iova); |
| |
| void geni_se_tx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); |
| |
| void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); |
| |
| int geni_icc_get(struct geni_se *se, const char *icc_ddr); |
| |
| int geni_icc_set_bw(struct geni_se *se); |
| void geni_icc_set_tag(struct geni_se *se, u32 tag); |
| |
| int geni_icc_enable(struct geni_se *se); |
| |
| int geni_icc_disable(struct geni_se *se); |
| |
| void geni_remove_earlycon_icc_vote(void); |
| #endif |
| #endif |