// SPDX-License-Identifier: GPL-2.0+ /* * Renesas R-Car SATA driver * * Author: Vladimir Barinov <[email protected]> * Copyright (C) 2013-2015 Cogent Embedded, Inc. * Copyright (C) 2013-2015 Renesas Solutions Corp. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/ata.h> #include <linux/libata.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/err.h> #define DRV_NAME … /* SH-Navi2G/ATAPI module compatible control registers */ #define ATAPI_CONTROL1_REG … #define ATAPI_STATUS_REG … #define ATAPI_INT_ENABLE_REG … #define ATAPI_DTB_ADR_REG … #define ATAPI_DMA_START_ADR_REG … #define ATAPI_DMA_TRANS_CNT_REG … #define ATAPI_CONTROL2_REG … #define ATAPI_SIG_ST_REG … #define ATAPI_BYTE_SWAP_REG … /* ATAPI control 1 register (ATAPI_CONTROL1) bits */ #define ATAPI_CONTROL1_ISM … #define ATAPI_CONTROL1_DTA32M … #define ATAPI_CONTROL1_RESET … #define ATAPI_CONTROL1_DESE … #define ATAPI_CONTROL1_RW … #define ATAPI_CONTROL1_STOP … #define ATAPI_CONTROL1_START … /* ATAPI status register (ATAPI_STATUS) bits */ #define ATAPI_STATUS_SATAINT … #define ATAPI_STATUS_DNEND … #define ATAPI_STATUS_DEVTRM … #define ATAPI_STATUS_DEVINT … #define ATAPI_STATUS_ERR … #define ATAPI_STATUS_NEND … #define ATAPI_STATUS_ACT … /* Interrupt enable register (ATAPI_INT_ENABLE) bits */ #define ATAPI_INT_ENABLE_SATAINT … #define ATAPI_INT_ENABLE_DNEND … #define ATAPI_INT_ENABLE_DEVTRM … #define ATAPI_INT_ENABLE_DEVINT … #define ATAPI_INT_ENABLE_ERR … #define ATAPI_INT_ENABLE_NEND … #define ATAPI_INT_ENABLE_ACT … /* Access control registers for physical layer control register */ #define SATAPHYADDR_REG … #define SATAPHYWDATA_REG … #define SATAPHYACCEN_REG … #define SATAPHYRESET_REG … #define SATAPHYRDATA_REG … #define SATAPHYACK_REG … /* Physical layer control address command register (SATAPHYADDR) bits */ #define SATAPHYADDR_PHYRATEMODE … #define SATAPHYADDR_PHYCMD_READ … #define SATAPHYADDR_PHYCMD_WRITE … /* Physical layer control enable register (SATAPHYACCEN) bits */ #define SATAPHYACCEN_PHYLANE … /* Physical layer control reset register (SATAPHYRESET) bits */ #define SATAPHYRESET_PHYRST … #define SATAPHYRESET_PHYSRES … /* Physical layer control acknowledge register (SATAPHYACK) bits */ #define SATAPHYACK_PHYACK … /* Serial-ATA HOST control registers */ #define BISTCONF_REG … #define SDATA_REG … #define SSDEVCON_REG … #define SCRSSTS_REG … #define SCRSERR_REG … #define SCRSCON_REG … #define SCRSACT_REG … #define SATAINTSTAT_REG … #define SATAINTMASK_REG … /* SATA INT status register (SATAINTSTAT) bits */ #define SATAINTSTAT_SERR … #define SATAINTSTAT_ATA … /* SATA INT mask register (SATAINTSTAT) bits */ #define SATAINTMASK_SERRMSK … #define SATAINTMASK_ERRMSK … #define SATAINTMASK_ERRCRTMSK … #define SATAINTMASK_ATAMSK … #define SATAINTMASK_ALL_GEN1 … #define SATAINTMASK_ALL_GEN2 … #define SATA_RCAR_INT_MASK … /* Physical Layer Control Registers */ #define SATAPCTLR1_REG … #define SATAPCTLR2_REG … #define SATAPCTLR3_REG … #define SATAPCTLR4_REG … /* Descriptor table word 0 bit (when DTA32M = 1) */ #define SATA_RCAR_DTEND … #define SATA_RCAR_DMA_BOUNDARY … /* Gen2 Physical Layer Control Registers */ #define RCAR_GEN2_PHY_CTL1_REG … #define RCAR_GEN2_PHY_CTL1 … #define RCAR_GEN2_PHY_CTL1_SS … #define RCAR_GEN2_PHY_CTL2_REG … #define RCAR_GEN2_PHY_CTL2 … #define RCAR_GEN2_PHY_CTL3_REG … #define RCAR_GEN2_PHY_CTL3 … #define RCAR_GEN2_PHY_CTL4_REG … #define RCAR_GEN2_PHY_CTL4 … #define RCAR_GEN2_PHY_CTL5_REG … #define RCAR_GEN2_PHY_CTL5 … #define RCAR_GEN2_PHY_CTL5_DC … #define RCAR_GEN2_PHY_CTL5_TR … enum sata_rcar_type { … }; struct sata_rcar_priv { … }; static void sata_rcar_gen1_phy_preinit(struct sata_rcar_priv *priv) { … } static void sata_rcar_gen1_phy_write(struct sata_rcar_priv *priv, u16 reg, u32 val, int group) { … } static void sata_rcar_gen1_phy_init(struct sata_rcar_priv *priv) { … } static void sata_rcar_gen2_phy_init(struct sata_rcar_priv *priv) { … } static void sata_rcar_freeze(struct ata_port *ap) { … } static void sata_rcar_thaw(struct ata_port *ap) { … } static void sata_rcar_ioread16_rep(void __iomem *reg, void *buffer, int count) { … } static void sata_rcar_iowrite16_rep(void __iomem *reg, void *buffer, int count) { … } static u8 sata_rcar_check_status(struct ata_port *ap) { … } static u8 sata_rcar_check_altstatus(struct ata_port *ap) { … } static void sata_rcar_set_devctl(struct ata_port *ap, u8 ctl) { … } static void sata_rcar_dev_select(struct ata_port *ap, unsigned int device) { … } static bool sata_rcar_ata_devchk(struct ata_port *ap, unsigned int device) { … } static int sata_rcar_wait_after_reset(struct ata_link *link, unsigned long deadline) { … } static int sata_rcar_bus_softreset(struct ata_port *ap, unsigned long deadline) { … } static int sata_rcar_softreset(struct ata_link *link, unsigned int *classes, unsigned long deadline) { … } static void sata_rcar_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) { … } static void sata_rcar_tf_read(struct ata_port *ap, struct ata_taskfile *tf) { … } static void sata_rcar_exec_command(struct ata_port *ap, const struct ata_taskfile *tf) { … } static unsigned int sata_rcar_data_xfer(struct ata_queued_cmd *qc, unsigned char *buf, unsigned int buflen, int rw) { … } static void sata_rcar_drain_fifo(struct ata_queued_cmd *qc) { … } static int sata_rcar_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) { … } static int sata_rcar_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) { … } static void sata_rcar_bmdma_fill_sg(struct ata_queued_cmd *qc) { … } static enum ata_completion_errors sata_rcar_qc_prep(struct ata_queued_cmd *qc) { … } static void sata_rcar_bmdma_setup(struct ata_queued_cmd *qc) { … } static void sata_rcar_bmdma_start(struct ata_queued_cmd *qc) { … } static void sata_rcar_bmdma_stop(struct ata_queued_cmd *qc) { … } static u8 sata_rcar_bmdma_status(struct ata_port *ap) { … } static const struct scsi_host_template sata_rcar_sht = …; static struct ata_port_operations sata_rcar_port_ops = …; static void sata_rcar_serr_interrupt(struct ata_port *ap) { … } static void sata_rcar_ata_interrupt(struct ata_port *ap) { … } static irqreturn_t sata_rcar_interrupt(int irq, void *dev_instance) { … } static void sata_rcar_setup_port(struct ata_host *host) { … } static void sata_rcar_init_module(struct sata_rcar_priv *priv) { … } static void sata_rcar_init_controller(struct ata_host *host) { … } static const struct of_device_id sata_rcar_match[] = …; MODULE_DEVICE_TABLE(of, sata_rcar_match); static int sata_rcar_probe(struct platform_device *pdev) { … } static void sata_rcar_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP static int sata_rcar_suspend(struct device *dev) { … } static int sata_rcar_resume(struct device *dev) { … } static int sata_rcar_restore(struct device *dev) { … } static const struct dev_pm_ops sata_rcar_pm_ops = …; #endif static struct platform_driver sata_rcar_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
Codebase Browser
linux