drivers/ata/sata_ceva.c - u-boot - Git at Google


            
            // SPDX-License-Identifier: GPL-2.0+

            
            /*

            
             * (C) Copyright 2015 - 2016 Xilinx, Inc.

            
             * Michal Simek <michal.simek@amd.com>

            
             */

            
            #include <dm.h>

            
            #include <ahci.h>

            
            #include <generic-phy.h>

            
            #include <log.h>

            
            #include <reset.h>

            
            #include <scsi.h>

            
            #include <asm/io.h>

            
            #include <dm/device_compat.h>

            
            #include <linux/ioport.h>


            /* Vendor Specific Register Offsets */

            
            #define AHCI_VEND_PCFG  0xA4

            
            #define AHCI_VEND_PPCFG 0xA8

            
            #define AHCI_VEND_PP2C  0xAC

            
            #define AHCI_VEND_PP3C  0xB0

            
            #define AHCI_VEND_PP4C  0xB4

            
            #define AHCI_VEND_PP5C  0xB8

            
            #define AHCI_VEND_AXICC 0xBc

            
            #define AHCI_VEND_PAXIC 0xC0

            
            #define AHCI_VEND_PTC   0xC8


            /* Vendor Specific Register bit definitions */

            
            #define PAXIC_ADBW_BW64 0x1

            
            #define PAXIC_MAWIDD	(1 << 8)

            
            #define PAXIC_MARIDD	(1 << 16)

            
            #define PAXIC_OTL	(0x4 << 20)


            #define PCFG_TPSS_VAL	(0x32 << 16)

            
            #define PCFG_TPRS_VAL	(0x2 << 12)

            
            #define PCFG_PAD_VAL	0x2


            #define PPCFG_TTA	0x1FFFE

            
            #define PPCFG_PSSO_EN	(1 << 28)

            
            #define PPCFG_PSS_EN	(1 << 29)

            
            #define PPCFG_ESDF_EN	(1 << 31)


            #define PP2C_CIBGMN	0x0F

            
            #define PP2C_CIBGMX	(0x25 << 8)

            
            #define PP2C_CIBGN	(0x18 << 16)

            
            #define PP2C_CINMP	(0x29 << 24)


            #define PP3C_CWBGMN	0x04

            
            #define PP3C_CWBGMX	(0x0B << 8)

            
            #define PP3C_CWBGN	(0x08 << 16)

            
            #define PP3C_CWNMP	(0x0F << 24)


            #define PP4C_BMX	0x0a

            
            #define PP4C_BNM	(0x08 << 8)

            
            #define PP4C_SFD	(0x4a << 16)

            
            #define PP4C_PTST	(0x06 << 24)


            #define PP5C_RIT	0x60216

            
            #define PP5C_RCT	(0x7f0 << 20)


            #define PTC_RX_WM_VAL	0x40

            
            #define PTC_RSVD	(1 << 27)


            #define PORT0_BASE	0x100

            
            #define PORT1_BASE	0x180


            /* Port Control Register Bit Definitions */

            
            #define PORT_SCTL_SPD_GEN3	(0x3 << 4)

            
            #define PORT_SCTL_SPD_GEN2	(0x2 << 4)

            
            #define PORT_SCTL_SPD_GEN1	(0x1 << 4)

            
            #define PORT_SCTL_IPM		(0x3 << 8)


            #define PORT_BASE	0x100

            
            #define PORT_OFFSET	0x80

            
            #define NR_PORTS	2

            
            #define DRV_NAME	"ahci-ceva"

            
            #define CEVA_FLAG_BROKEN_GEN2	1


            /* flag bit definition */

            
            #define FLAG_COHERENT	1


            /* register config value */

            
            #define CEVA_PHY1_CFG	0xa003fffe

            
            #define CEVA_PHY2_CFG	0x28184d1f

            
            #define CEVA_PHY3_CFG	0x0e081509

            
            #define CEVA_TRANS_CFG	0x08000029

            
            #define CEVA_AXICC_CFG	0x3fffffff


            /* for ls1021a */

            
            #define LS1021_AHCI_VEND_AXICC	0xC0

            
            #define LS1021_CEVA_PHY2_CFG	0x28183414

            
            #define LS1021_CEVA_PHY3_CFG	0x0e080e06

            
            #define LS1021_CEVA_PHY4_CFG	0x064a080b

            
            #define LS1021_CEVA_PHY5_CFG	0x2aa86470


            /* ecc val pair */

            
            #define ECC_DIS_VAL_CH1		0x00020000

            
            #define ECC_DIS_VAL_CH2		0x80000000

            
            #define ECC_DIS_VAL_CH3		0x40000000


            enum ceva_soc {

            
            	CEVA_1V84,

            
            	CEVA_LS1012A,

            
            	CEVA_LS1021A,

            
            	CEVA_LS1028A,

            
            	CEVA_LS1043A,

            
            	CEVA_LS1046A,

            
            	CEVA_LS1088A,

            
            	CEVA_LS2080A,

            
            };


            struct ceva_sata_priv {

            
            	ulong base;

            
            	ulong ecc_base;

            
            	enum ceva_soc soc;

            
            	ulong flag;

            
            };


            static int ceva_init_sata(struct ceva_sata_priv *priv)

            
            {

            
            	ulong ecc_addr = priv->ecc_base;

            
            	ulong base = priv->base;

            
            	ulong tmp;


            	switch (priv->soc) {

            
            	case CEVA_1V84:

            
            		tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;

            
            		writel(tmp, base + AHCI_VEND_PAXIC);

            
            		tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | PCFG_PAD_VAL;

            
            		writel(tmp, base + AHCI_VEND_PCFG);

            
            		tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;

            
            		writel(tmp, base + AHCI_VEND_PPCFG);

            
            		tmp = PTC_RX_WM_VAL | PTC_RSVD;

            
            		writel(tmp, base + AHCI_VEND_PTC);

            
            		break;


            	case CEVA_LS1021A:

            
            		if (!ecc_addr)

            
            			return -EINVAL;

            
            		writel(ECC_DIS_VAL_CH1, ecc_addr);

            
            		writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);

            
            		writel(LS1021_CEVA_PHY2_CFG, base + AHCI_VEND_PP2C);

            
            		writel(LS1021_CEVA_PHY3_CFG, base + AHCI_VEND_PP3C);

            
            		writel(LS1021_CEVA_PHY4_CFG, base + AHCI_VEND_PP4C);

            
            		writel(LS1021_CEVA_PHY5_CFG, base + AHCI_VEND_PP5C);

            
            		writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);

            
            		break;


            	case CEVA_LS1012A:

            
            	case CEVA_LS1043A:

            
            	case CEVA_LS1046A:

            
            		if (!ecc_addr)

            
            			return -EINVAL;

            
            		writel(ECC_DIS_VAL_CH2, ecc_addr);

            
            		/* fallthrough */

            
            	case CEVA_LS2080A:

            
            		writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);

            
            		writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);

            
            		break;


            	case CEVA_LS1028A:

            
            	case CEVA_LS1088A:

            
            		if (!ecc_addr)

            
            			return -EINVAL;

            
            		writel(ECC_DIS_VAL_CH3, ecc_addr);

            
            		writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);

            
            		writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);

            
            		break;

            
            	}


            	if (priv->flag & FLAG_COHERENT)

            
            		writel(CEVA_AXICC_CFG, base + AHCI_VEND_AXICC);


            	return 0;

            
            }


            static int sata_ceva_bind(struct udevice *dev)

            
            {

            
            	struct udevice *scsi_dev;


            	return ahci_bind_scsi(dev, &scsi_dev);

            
            }


            static int sata_ceva_probe(struct udevice *dev)

            
            {

            
            	struct ceva_sata_priv *priv = dev_get_priv(dev);

            
            	struct phy phy;

            
            	int ret;

            
            	struct reset_ctl_bulk resets;


            	ret = generic_phy_get_by_index(dev, 0, &phy);

            
            	if (!ret) {

            
            		dev_dbg(dev, "Perform PHY initialization\n");

            
            		ret = generic_phy_init(&phy);

            
            		if (ret)

            
            			return ret;

            
            	} else if (ret != -ENOENT) {

            
            		dev_dbg(dev, "could not get phy (err %d)\n", ret);

            
            		return ret;

            
            	}


            	/* reset is optional */

            
            	ret = reset_get_bulk(dev, &resets);

            
            	if (ret && ret != -ENOTSUPP && ret != -ENOENT) {

            
            		dev_dbg(dev, "Getting reset fails (err %d)\n", ret);

            
            		return ret;

            
            	}


            	/* Just trigger reset when reset is specified */

            
            	if (!ret) {

            
            		dev_dbg(dev, "Perform IP reset\n");

            
            		ret = reset_deassert_bulk(&resets);

            
            		if (ret) {

            
            			dev_dbg(dev, "Reset fails (err %d)\n", ret);

            
            			reset_release_bulk(&resets);

            
            			return ret;

            
            		}

            
            	}


            	if (generic_phy_valid(&phy)) {

            
            		dev_dbg(dev, "Perform PHY power on\n");

            
            		ret = generic_phy_power_on(&phy);

            
            		if (ret) {

            
            			dev_dbg(dev, "PHY power on failed (err %d)\n", ret);

            
            			return ret;

            
            		}

            
            	}


            	ceva_init_sata(priv);


            	return ahci_probe_scsi(dev, priv->base);

            
            }


            static const struct udevice_id sata_ceva_ids[] = {

            
            	{ .compatible = "ceva,ahci-1v84", .data = CEVA_1V84 },

            
            	{ .compatible = "fsl,ls1012a-ahci", .data = CEVA_LS1012A },

            
            	{ .compatible = "fsl,ls1021a-ahci", .data = CEVA_LS1021A },

            
            	{ .compatible = "fsl,ls1028a-ahci", .data = CEVA_LS1028A },

            
            	{ .compatible = "fsl,ls1043a-ahci", .data = CEVA_LS1043A },

            
            	{ .compatible = "fsl,ls1046a-ahci", .data = CEVA_LS1046A },

            
            	{ .compatible = "fsl,ls1088a-ahci", .data = CEVA_LS1088A },

            
            	{ .compatible = "fsl,ls2080a-ahci", .data = CEVA_LS2080A },

            
            	{ }

            
            };


            static int sata_ceva_of_to_plat(struct udevice *dev)

            
            {

            
            	struct ceva_sata_priv *priv = dev_get_priv(dev);

            
            	struct resource res_regs;

            
            	int ret;


            	if (dev_read_bool(dev, "dma-coherent"))

            
            		priv->flag |= FLAG_COHERENT;


            	priv->base = dev_read_addr(dev);

            
            	if (priv->base == FDT_ADDR_T_NONE)

            
            		return -EINVAL;


            	ret = dev_read_resource_byname(dev, "sata-ecc", &res_regs);

            
            	if (ret)

            
            		priv->ecc_base = 0;

            
            	else

            
            		priv->ecc_base = res_regs.start;


            	priv->soc = dev_get_driver_data(dev);


            	debug("ccsr-sata-base %lx\t ecc-base %lx\n",

            
            	      priv->base,

            
            	      priv->ecc_base);


            	return 0;

            
            }


            U_BOOT_DRIVER(ceva_host_blk) = {

            
            	.name = "ceva_sata",

            
            	.id = UCLASS_AHCI,

            
            	.of_match = sata_ceva_ids,

            
            	.bind = sata_ceva_bind,

            
            	.ops = &scsi_ops,

            
            	.priv_auto	= sizeof(struct ceva_sata_priv),

            
            	.probe = sata_ceva_probe,

            
            	.of_to_plat = sata_ceva_of_to_plat,

            
            };
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* (C) Copyright 2015 - 2016 Xilinx, Inc.
	* Michal Simek <michal.simek@amd.com>
	*/
	#include <dm.h>
	#include <ahci.h>
	#include <generic-phy.h>
	#include <log.h>
	#include <reset.h>
	#include <scsi.h>
	#include <asm/io.h>
	#include <dm/device_compat.h>
	#include <linux/ioport.h>

	/* Vendor Specific Register Offsets */
	#define AHCI_VEND_PCFG 0xA4
	#define AHCI_VEND_PPCFG 0xA8
	#define AHCI_VEND_PP2C 0xAC
	#define AHCI_VEND_PP3C 0xB0
	#define AHCI_VEND_PP4C 0xB4
	#define AHCI_VEND_PP5C 0xB8
	#define AHCI_VEND_AXICC 0xBc
	#define AHCI_VEND_PAXIC 0xC0
	#define AHCI_VEND_PTC 0xC8

	/* Vendor Specific Register bit definitions */
	#define PAXIC_ADBW_BW64 0x1
	#define PAXIC_MAWIDD (1 << 8)
	#define PAXIC_MARIDD (1 << 16)
	#define PAXIC_OTL (0x4 << 20)

	#define PCFG_TPSS_VAL (0x32 << 16)
	#define PCFG_TPRS_VAL (0x2 << 12)
	#define PCFG_PAD_VAL 0x2

	#define PPCFG_TTA 0x1FFFE
	#define PPCFG_PSSO_EN (1 << 28)
	#define PPCFG_PSS_EN (1 << 29)
	#define PPCFG_ESDF_EN (1 << 31)

	#define PP2C_CIBGMN 0x0F
	#define PP2C_CIBGMX (0x25 << 8)
	#define PP2C_CIBGN (0x18 << 16)
	#define PP2C_CINMP (0x29 << 24)

	#define PP3C_CWBGMN 0x04
	#define PP3C_CWBGMX (0x0B << 8)
	#define PP3C_CWBGN (0x08 << 16)
	#define PP3C_CWNMP (0x0F << 24)

	#define PP4C_BMX 0x0a
	#define PP4C_BNM (0x08 << 8)
	#define PP4C_SFD (0x4a << 16)
	#define PP4C_PTST (0x06 << 24)

	#define PP5C_RIT 0x60216
	#define PP5C_RCT (0x7f0 << 20)

	#define PTC_RX_WM_VAL 0x40
	#define PTC_RSVD (1 << 27)

	#define PORT0_BASE 0x100
	#define PORT1_BASE 0x180

	/* Port Control Register Bit Definitions */
	#define PORT_SCTL_SPD_GEN3 (0x3 << 4)
	#define PORT_SCTL_SPD_GEN2 (0x2 << 4)
	#define PORT_SCTL_SPD_GEN1 (0x1 << 4)
	#define PORT_SCTL_IPM (0x3 << 8)

	#define PORT_BASE 0x100
	#define PORT_OFFSET 0x80
	#define NR_PORTS 2
	#define DRV_NAME "ahci-ceva"
	#define CEVA_FLAG_BROKEN_GEN2 1

	/* flag bit definition */
	#define FLAG_COHERENT 1

	/* register config value */
	#define CEVA_PHY1_CFG 0xa003fffe
	#define CEVA_PHY2_CFG 0x28184d1f
	#define CEVA_PHY3_CFG 0x0e081509
	#define CEVA_TRANS_CFG 0x08000029
	#define CEVA_AXICC_CFG 0x3fffffff

	/* for ls1021a */
	#define LS1021_AHCI_VEND_AXICC 0xC0
	#define LS1021_CEVA_PHY2_CFG 0x28183414
	#define LS1021_CEVA_PHY3_CFG 0x0e080e06
	#define LS1021_CEVA_PHY4_CFG 0x064a080b
	#define LS1021_CEVA_PHY5_CFG 0x2aa86470

	/* ecc val pair */
	#define ECC_DIS_VAL_CH1 0x00020000
	#define ECC_DIS_VAL_CH2 0x80000000
	#define ECC_DIS_VAL_CH3 0x40000000

	enum ceva_soc {
	CEVA_1V84,
	CEVA_LS1012A,
	CEVA_LS1021A,
	CEVA_LS1028A,
	CEVA_LS1043A,
	CEVA_LS1046A,
	CEVA_LS1088A,
	CEVA_LS2080A,
	};

	struct ceva_sata_priv {
	ulong base;
	ulong ecc_base;
	enum ceva_soc soc;
	ulong flag;
	};

	static int ceva_init_sata(struct ceva_sata_priv *priv)
	{
	ulong ecc_addr = priv->ecc_base;
	ulong base = priv->base;
	ulong tmp;

	switch (priv->soc) {
	case CEVA_1V84:
	tmp = PAXIC_ADBW_BW64 \| PAXIC_MAWIDD \| PAXIC_MARIDD \| PAXIC_OTL;
	writel(tmp, base + AHCI_VEND_PAXIC);
	tmp = PCFG_TPSS_VAL \| PCFG_TPRS_VAL \| PCFG_PAD_VAL;
	writel(tmp, base + AHCI_VEND_PCFG);
	tmp = PPCFG_TTA \| PPCFG_PSS_EN \| PPCFG_ESDF_EN;
	writel(tmp, base + AHCI_VEND_PPCFG);
	tmp = PTC_RX_WM_VAL \| PTC_RSVD;
	writel(tmp, base + AHCI_VEND_PTC);
	break;

	case CEVA_LS1021A:
	if (!ecc_addr)
	return -EINVAL;
	writel(ECC_DIS_VAL_CH1, ecc_addr);
	writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);
	writel(LS1021_CEVA_PHY2_CFG, base + AHCI_VEND_PP2C);
	writel(LS1021_CEVA_PHY3_CFG, base + AHCI_VEND_PP3C);
	writel(LS1021_CEVA_PHY4_CFG, base + AHCI_VEND_PP4C);
	writel(LS1021_CEVA_PHY5_CFG, base + AHCI_VEND_PP5C);
	writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);
	break;

	case CEVA_LS1012A:
	case CEVA_LS1043A:
	case CEVA_LS1046A:
	if (!ecc_addr)
	return -EINVAL;
	writel(ECC_DIS_VAL_CH2, ecc_addr);
	/* fallthrough */
	case CEVA_LS2080A:
	writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);
	writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);
	break;

	case CEVA_LS1028A:
	case CEVA_LS1088A:
	if (!ecc_addr)
	return -EINVAL;
	writel(ECC_DIS_VAL_CH3, ecc_addr);
	writel(CEVA_PHY1_CFG, base + AHCI_VEND_PPCFG);
	writel(CEVA_TRANS_CFG, base + AHCI_VEND_PTC);
	break;
	}

	if (priv->flag & FLAG_COHERENT)
	writel(CEVA_AXICC_CFG, base + AHCI_VEND_AXICC);

	return 0;
	}

	static int sata_ceva_bind(struct udevice *dev)
	{
	struct udevice *scsi_dev;

	return ahci_bind_scsi(dev, &scsi_dev);
	}

	static int sata_ceva_probe(struct udevice *dev)
	{
	struct ceva_sata_priv *priv = dev_get_priv(dev);
	struct phy phy;
	int ret;
	struct reset_ctl_bulk resets;

	ret = generic_phy_get_by_index(dev, 0, &phy);
	if (!ret) {
	dev_dbg(dev, "Perform PHY initialization\n");
	ret = generic_phy_init(&phy);
	if (ret)
	return ret;
	} else if (ret != -ENOENT) {
	dev_dbg(dev, "could not get phy (err %d)\n", ret);
	return ret;
	}

	/* reset is optional */
	ret = reset_get_bulk(dev, &resets);
	if (ret && ret != -ENOTSUPP && ret != -ENOENT) {
	dev_dbg(dev, "Getting reset fails (err %d)\n", ret);
	return ret;
	}

	/* Just trigger reset when reset is specified */
	if (!ret) {
	dev_dbg(dev, "Perform IP reset\n");
	ret = reset_deassert_bulk(&resets);
	if (ret) {
	dev_dbg(dev, "Reset fails (err %d)\n", ret);
	reset_release_bulk(&resets);
	return ret;
	}
	}

	if (generic_phy_valid(&phy)) {
	dev_dbg(dev, "Perform PHY power on\n");
	ret = generic_phy_power_on(&phy);
	if (ret) {
	dev_dbg(dev, "PHY power on failed (err %d)\n", ret);
	return ret;
	}
	}

	ceva_init_sata(priv);

	return ahci_probe_scsi(dev, priv->base);
	}

	static const struct udevice_id sata_ceva_ids[] = {
	{ .compatible = "ceva,ahci-1v84", .data = CEVA_1V84 },
	{ .compatible = "fsl,ls1012a-ahci", .data = CEVA_LS1012A },
	{ .compatible = "fsl,ls1021a-ahci", .data = CEVA_LS1021A },
	{ .compatible = "fsl,ls1028a-ahci", .data = CEVA_LS1028A },
	{ .compatible = "fsl,ls1043a-ahci", .data = CEVA_LS1043A },
	{ .compatible = "fsl,ls1046a-ahci", .data = CEVA_LS1046A },
	{ .compatible = "fsl,ls1088a-ahci", .data = CEVA_LS1088A },
	{ .compatible = "fsl,ls2080a-ahci", .data = CEVA_LS2080A },
	{ }
	};

	static int sata_ceva_of_to_plat(struct udevice *dev)
	{
	struct ceva_sata_priv *priv = dev_get_priv(dev);
	struct resource res_regs;
	int ret;

	if (dev_read_bool(dev, "dma-coherent"))
	priv->flag \|= FLAG_COHERENT;

	priv->base = dev_read_addr(dev);
	if (priv->base == FDT_ADDR_T_NONE)
	return -EINVAL;

	ret = dev_read_resource_byname(dev, "sata-ecc", &res_regs);
	if (ret)
	priv->ecc_base = 0;
	else
	priv->ecc_base = res_regs.start;

	priv->soc = dev_get_driver_data(dev);

	debug("ccsr-sata-base %lx\t ecc-base %lx\n",
	priv->base,
	priv->ecc_base);

	return 0;
	}

	U_BOOT_DRIVER(ceva_host_blk) = {
	.name = "ceva_sata",
	.id = UCLASS_AHCI,
	.of_match = sata_ceva_ids,
	.bind = sata_ceva_bind,
	.ops = &scsi_ops,
	.priv_auto = sizeof(struct ceva_sata_priv),
	.probe = sata_ceva_probe,
	.of_to_plat = sata_ceva_of_to_plat,
	};