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/*
* (C) Copyright 2015 - 2016 Xilinx, Inc.
* Michal Simek <michal.simek@xilinx.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <ahci.h>
#include <scsi.h>
#include <asm/arch/hardware.h>
#include <asm/io.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_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
static int ceva_init_sata(ulong mmio)
{
ulong tmp;
int i;
/*
* AXI Data bus width to 64
* Set Mem Addr Read, Write ID for data transfers
* Transfer limit to 72 DWord
*/
tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
writel(tmp, mmio + AHCI_VEND_PAXIC);
/* Set AHCI Enable */
tmp = readl(mmio + HOST_CTL);
tmp |= HOST_AHCI_EN;
writel(tmp, mmio + HOST_CTL);
for (i = 0; i < NR_PORTS; i++) {
/* TPSS TPRS scalars, CISE and Port Addr */
tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | (PCFG_PAD_VAL + i);
writel(tmp, mmio + AHCI_VEND_PCFG);
/* Port Phy Cfg register enables */
tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
writel(tmp, mmio + AHCI_VEND_PPCFG);
/* Rx Watermark setting */
tmp = PTC_RX_WM_VAL | PTC_RSVD;
writel(tmp, mmio + AHCI_VEND_PTC);
/* Default to Gen 2 Speed and Gen 1 if Gen2 is broken */
tmp = PORT_SCTL_SPD_GEN3 | PORT_SCTL_IPM;
writel(tmp, mmio + PORT_SCR_CTL + PORT_BASE + PORT_OFFSET * i);
}
return 0;
}
static int sata_ceva_probe(struct udevice *dev)
{
struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
ceva_init_sata(plat->base);
return achi_init_one_dm(dev);
}
static const struct udevice_id sata_ceva_ids[] = {
{ .compatible = "ceva,ahci-1v84" },
{ }
};
static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
{
struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
plat->base = devfdt_get_addr(dev);
if (plat->base == FDT_ADDR_T_NONE)
return -EINVAL;
/* Hardcode number for ceva sata controller */
plat->max_lun = 1; /* Actually two but untested */
plat->max_id = 2;
return 0;
}
U_BOOT_DRIVER(ceva_host_blk) = {
.name = "ceva_sata",
.id = UCLASS_SCSI,
.of_match = sata_ceva_ids,
.ops = &scsi_ops,
.probe = sata_ceva_probe,
.ofdata_to_platdata = sata_ceva_ofdata_to_platdata,
};
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