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u-boot/drivers/ata/sata_ceva.c
Jonas Karlman 017ae4920b scsi: ceva: Use generic_phy_valid() helper 
The documentation for struct phy state that "The content of the
structure is managed solely by the PHY API and PHY drivers".

Change to use the generic_phy_valid() helper to check if phy is valid.

Fixes: f6f5451d46 ("scsi: ceva: Enable PHY and reset support")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
2023-09-13 15:52:20 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 - 2016 Xilinx, Inc.
* Michal Simek <michal.simek@amd.com>
*/
#include <common.h>
#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,
};
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