2 * (C) Copyright 2015 - 2016 Xilinx, Inc.
3 * Michal Simek <michal.simek@xilinx.com>
5 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/hardware.h>
16 /* Vendor Specific Register Offsets */
17 #define AHCI_VEND_PCFG 0xA4
18 #define AHCI_VEND_PPCFG 0xA8
19 #define AHCI_VEND_PP2C 0xAC
20 #define AHCI_VEND_PP3C 0xB0
21 #define AHCI_VEND_PP4C 0xB4
22 #define AHCI_VEND_PP5C 0xB8
23 #define AHCI_VEND_PAXIC 0xC0
24 #define AHCI_VEND_PTC 0xC8
26 /* Vendor Specific Register bit definitions */
27 #define PAXIC_ADBW_BW64 0x1
28 #define PAXIC_MAWIDD (1 << 8)
29 #define PAXIC_MARIDD (1 << 16)
30 #define PAXIC_OTL (0x4 << 20)
32 #define PCFG_TPSS_VAL (0x32 << 16)
33 #define PCFG_TPRS_VAL (0x2 << 12)
34 #define PCFG_PAD_VAL 0x2
36 #define PPCFG_TTA 0x1FFFE
37 #define PPCFG_PSSO_EN (1 << 28)
38 #define PPCFG_PSS_EN (1 << 29)
39 #define PPCFG_ESDF_EN (1 << 31)
41 #define PP2C_CIBGMN 0x0F
42 #define PP2C_CIBGMX (0x25 << 8)
43 #define PP2C_CIBGN (0x18 << 16)
44 #define PP2C_CINMP (0x29 << 24)
46 #define PP3C_CWBGMN 0x04
47 #define PP3C_CWBGMX (0x0B << 8)
48 #define PP3C_CWBGN (0x08 << 16)
49 #define PP3C_CWNMP (0x0F << 24)
52 #define PP4C_BNM (0x08 << 8)
53 #define PP4C_SFD (0x4a << 16)
54 #define PP4C_PTST (0x06 << 24)
56 #define PP5C_RIT 0x60216
57 #define PP5C_RCT (0x7f0 << 20)
59 #define PTC_RX_WM_VAL 0x40
60 #define PTC_RSVD (1 << 27)
62 #define PORT0_BASE 0x100
63 #define PORT1_BASE 0x180
65 /* Port Control Register Bit Definitions */
66 #define PORT_SCTL_SPD_GEN3 (0x3 << 4)
67 #define PORT_SCTL_SPD_GEN2 (0x2 << 4)
68 #define PORT_SCTL_SPD_GEN1 (0x1 << 4)
69 #define PORT_SCTL_IPM (0x3 << 8)
71 #define PORT_BASE 0x100
72 #define PORT_OFFSET 0x80
74 #define DRV_NAME "ahci-ceva"
75 #define CEVA_FLAG_BROKEN_GEN2 1
77 static int ceva_init_sata(ulong mmio)
83 * AXI Data bus width to 64
84 * Set Mem Addr Read, Write ID for data transfers
85 * Transfer limit to 72 DWord
87 tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
88 writel(tmp, mmio + AHCI_VEND_PAXIC);
91 tmp = readl(mmio + HOST_CTL);
93 writel(tmp, mmio + HOST_CTL);
95 for (i = 0; i < NR_PORTS; i++) {
96 /* TPSS TPRS scalars, CISE and Port Addr */
97 tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | (PCFG_PAD_VAL + i);
98 writel(tmp, mmio + AHCI_VEND_PCFG);
100 /* Port Phy Cfg register enables */
101 tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
102 writel(tmp, mmio + AHCI_VEND_PPCFG);
104 /* Rx Watermark setting */
105 tmp = PTC_RX_WM_VAL | PTC_RSVD;
106 writel(tmp, mmio + AHCI_VEND_PTC);
108 /* Default to Gen 2 Speed and Gen 1 if Gen2 is broken */
109 tmp = PORT_SCTL_SPD_GEN3 | PORT_SCTL_IPM;
110 writel(tmp, mmio + PORT_SCR_CTL + PORT_BASE + PORT_OFFSET * i);
115 static int sata_ceva_probe(struct udevice *dev)
117 struct scsi_platdata *plat = dev_get_platdata(dev);
119 ceva_init_sata(plat->base);
123 static const struct udevice_id sata_ceva_ids[] = {
124 { .compatible = "ceva,ahci-1v84" },
128 static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
130 struct scsi_platdata *plat = dev_get_platdata(dev);
132 plat->base = dev_get_addr(dev);
133 if (plat->base == FDT_ADDR_T_NONE)
136 /* Hardcode number for ceva sata controller */
137 plat->max_lun = 1; /* Actually two but untested */
143 U_BOOT_DRIVER(ceva_host_blk) = {
146 .of_match = sata_ceva_ids,
147 .probe = sata_ceva_probe,
148 .ofdata_to_platdata = sata_ceva_ofdata_to_platdata,
149 .platdata_auto_alloc_size = sizeof(struct scsi_platdata),