1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2015 - 2016 Xilinx, Inc.
4 * Michal Simek <michal.simek@xilinx.com>
10 #include <asm/arch/hardware.h>
14 /* Vendor Specific Register Offsets */
15 #define AHCI_VEND_PCFG 0xA4
16 #define AHCI_VEND_PPCFG 0xA8
17 #define AHCI_VEND_PP2C 0xAC
18 #define AHCI_VEND_PP3C 0xB0
19 #define AHCI_VEND_PP4C 0xB4
20 #define AHCI_VEND_PP5C 0xB8
21 #define AHCI_VEND_PAXIC 0xC0
22 #define AHCI_VEND_PTC 0xC8
24 /* Vendor Specific Register bit definitions */
25 #define PAXIC_ADBW_BW64 0x1
26 #define PAXIC_MAWIDD (1 << 8)
27 #define PAXIC_MARIDD (1 << 16)
28 #define PAXIC_OTL (0x4 << 20)
30 #define PCFG_TPSS_VAL (0x32 << 16)
31 #define PCFG_TPRS_VAL (0x2 << 12)
32 #define PCFG_PAD_VAL 0x2
34 #define PPCFG_TTA 0x1FFFE
35 #define PPCFG_PSSO_EN (1 << 28)
36 #define PPCFG_PSS_EN (1 << 29)
37 #define PPCFG_ESDF_EN (1 << 31)
39 #define PP2C_CIBGMN 0x0F
40 #define PP2C_CIBGMX (0x25 << 8)
41 #define PP2C_CIBGN (0x18 << 16)
42 #define PP2C_CINMP (0x29 << 24)
44 #define PP3C_CWBGMN 0x04
45 #define PP3C_CWBGMX (0x0B << 8)
46 #define PP3C_CWBGN (0x08 << 16)
47 #define PP3C_CWNMP (0x0F << 24)
50 #define PP4C_BNM (0x08 << 8)
51 #define PP4C_SFD (0x4a << 16)
52 #define PP4C_PTST (0x06 << 24)
54 #define PP5C_RIT 0x60216
55 #define PP5C_RCT (0x7f0 << 20)
57 #define PTC_RX_WM_VAL 0x40
58 #define PTC_RSVD (1 << 27)
60 #define PORT0_BASE 0x100
61 #define PORT1_BASE 0x180
63 /* Port Control Register Bit Definitions */
64 #define PORT_SCTL_SPD_GEN3 (0x3 << 4)
65 #define PORT_SCTL_SPD_GEN2 (0x2 << 4)
66 #define PORT_SCTL_SPD_GEN1 (0x1 << 4)
67 #define PORT_SCTL_IPM (0x3 << 8)
69 #define PORT_BASE 0x100
70 #define PORT_OFFSET 0x80
72 #define DRV_NAME "ahci-ceva"
73 #define CEVA_FLAG_BROKEN_GEN2 1
75 struct ceva_sata_priv {
79 static int ceva_init_sata(ulong mmio)
85 * AXI Data bus width to 64
86 * Set Mem Addr Read, Write ID for data transfers
87 * Transfer limit to 72 DWord
89 tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
90 writel(tmp, mmio + AHCI_VEND_PAXIC);
93 tmp = readl(mmio + HOST_CTL);
95 writel(tmp, mmio + HOST_CTL);
97 for (i = 0; i < NR_PORTS; i++) {
98 /* TPSS TPRS scalars, CISE and Port Addr */
99 tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | (PCFG_PAD_VAL + i);
100 writel(tmp, mmio + AHCI_VEND_PCFG);
102 /* Port Phy Cfg register enables */
103 tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
104 writel(tmp, mmio + AHCI_VEND_PPCFG);
106 /* Rx Watermark setting */
107 tmp = PTC_RX_WM_VAL | PTC_RSVD;
108 writel(tmp, mmio + AHCI_VEND_PTC);
110 /* Default to Gen 2 Speed and Gen 1 if Gen2 is broken */
111 tmp = PORT_SCTL_SPD_GEN3 | PORT_SCTL_IPM;
112 writel(tmp, mmio + PORT_SCR_CTL + PORT_BASE + PORT_OFFSET * i);
117 static int sata_ceva_bind(struct udevice *dev)
119 struct udevice *scsi_dev;
121 return ahci_bind_scsi(dev, &scsi_dev);
124 static int sata_ceva_probe(struct udevice *dev)
126 struct ceva_sata_priv *priv = dev_get_priv(dev);
128 ceva_init_sata(priv->base);
130 return ahci_probe_scsi(dev, priv->base);
133 static const struct udevice_id sata_ceva_ids[] = {
134 { .compatible = "ceva,ahci-1v84" },
138 static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
140 struct ceva_sata_priv *priv = dev_get_priv(dev);
142 priv->base = devfdt_get_addr(dev);
143 if (priv->base == FDT_ADDR_T_NONE)
149 U_BOOT_DRIVER(ceva_host_blk) = {
152 .of_match = sata_ceva_ids,
153 .bind = sata_ceva_bind,
155 .priv_auto_alloc_size = sizeof(struct ceva_sata_priv),
156 .probe = sata_ceva_probe,
157 .ofdata_to_platdata = sata_ceva_ofdata_to_platdata,