mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-07 03:36:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
155 lines
3.5 KiB
C
155 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 - 2016 Xilinx, Inc.
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* Michal Simek <michal.simek@xilinx.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <ahci.h>
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#include <scsi.h>
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#include <asm/arch/hardware.h>
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#include <asm/io.h>
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/* Vendor Specific Register Offsets */
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#define AHCI_VEND_PCFG 0xA4
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#define AHCI_VEND_PPCFG 0xA8
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#define AHCI_VEND_PP2C 0xAC
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#define AHCI_VEND_PP3C 0xB0
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#define AHCI_VEND_PP4C 0xB4
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#define AHCI_VEND_PP5C 0xB8
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#define AHCI_VEND_PAXIC 0xC0
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#define AHCI_VEND_PTC 0xC8
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/* Vendor Specific Register bit definitions */
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#define PAXIC_ADBW_BW64 0x1
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#define PAXIC_MAWIDD (1 << 8)
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#define PAXIC_MARIDD (1 << 16)
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#define PAXIC_OTL (0x4 << 20)
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#define PCFG_TPSS_VAL (0x32 << 16)
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#define PCFG_TPRS_VAL (0x2 << 12)
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#define PCFG_PAD_VAL 0x2
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#define PPCFG_TTA 0x1FFFE
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#define PPCFG_PSSO_EN (1 << 28)
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#define PPCFG_PSS_EN (1 << 29)
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#define PPCFG_ESDF_EN (1 << 31)
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#define PP2C_CIBGMN 0x0F
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#define PP2C_CIBGMX (0x25 << 8)
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#define PP2C_CIBGN (0x18 << 16)
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#define PP2C_CINMP (0x29 << 24)
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#define PP3C_CWBGMN 0x04
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#define PP3C_CWBGMX (0x0B << 8)
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#define PP3C_CWBGN (0x08 << 16)
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#define PP3C_CWNMP (0x0F << 24)
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#define PP4C_BMX 0x0a
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#define PP4C_BNM (0x08 << 8)
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#define PP4C_SFD (0x4a << 16)
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#define PP4C_PTST (0x06 << 24)
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#define PP5C_RIT 0x60216
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#define PP5C_RCT (0x7f0 << 20)
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#define PTC_RX_WM_VAL 0x40
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#define PTC_RSVD (1 << 27)
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#define PORT0_BASE 0x100
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#define PORT1_BASE 0x180
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/* Port Control Register Bit Definitions */
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#define PORT_SCTL_SPD_GEN3 (0x3 << 4)
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#define PORT_SCTL_SPD_GEN2 (0x2 << 4)
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#define PORT_SCTL_SPD_GEN1 (0x1 << 4)
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#define PORT_SCTL_IPM (0x3 << 8)
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#define PORT_BASE 0x100
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#define PORT_OFFSET 0x80
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#define NR_PORTS 2
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#define DRV_NAME "ahci-ceva"
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#define CEVA_FLAG_BROKEN_GEN2 1
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static int ceva_init_sata(ulong mmio)
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{
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ulong tmp;
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int i;
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/*
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* AXI Data bus width to 64
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* Set Mem Addr Read, Write ID for data transfers
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* Transfer limit to 72 DWord
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*/
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tmp = PAXIC_ADBW_BW64 | PAXIC_MAWIDD | PAXIC_MARIDD | PAXIC_OTL;
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writel(tmp, mmio + AHCI_VEND_PAXIC);
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/* Set AHCI Enable */
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tmp = readl(mmio + HOST_CTL);
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tmp |= HOST_AHCI_EN;
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writel(tmp, mmio + HOST_CTL);
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for (i = 0; i < NR_PORTS; i++) {
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/* TPSS TPRS scalars, CISE and Port Addr */
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tmp = PCFG_TPSS_VAL | PCFG_TPRS_VAL | (PCFG_PAD_VAL + i);
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writel(tmp, mmio + AHCI_VEND_PCFG);
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/* Port Phy Cfg register enables */
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tmp = PPCFG_TTA | PPCFG_PSS_EN | PPCFG_ESDF_EN;
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writel(tmp, mmio + AHCI_VEND_PPCFG);
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/* Rx Watermark setting */
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tmp = PTC_RX_WM_VAL | PTC_RSVD;
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writel(tmp, mmio + AHCI_VEND_PTC);
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/* Default to Gen 2 Speed and Gen 1 if Gen2 is broken */
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tmp = PORT_SCTL_SPD_GEN3 | PORT_SCTL_IPM;
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writel(tmp, mmio + PORT_SCR_CTL + PORT_BASE + PORT_OFFSET * i);
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}
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return 0;
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}
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static int sata_ceva_probe(struct udevice *dev)
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{
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int ret;
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struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
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ceva_init_sata(plat->base);
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ret = ahci_init_one_dm(dev);
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if (ret)
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return ret;
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return ahci_start_ports_dm(dev);
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}
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static const struct udevice_id sata_ceva_ids[] = {
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{ .compatible = "ceva,ahci-1v84" },
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{ }
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};
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static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
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{
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struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
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plat->base = devfdt_get_addr(dev);
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if (plat->base == FDT_ADDR_T_NONE)
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return -EINVAL;
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/* Hardcode number for ceva sata controller */
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plat->max_lun = 1; /* Actually two but untested */
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plat->max_id = 2;
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return 0;
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}
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U_BOOT_DRIVER(ceva_host_blk) = {
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.name = "ceva_sata",
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.id = UCLASS_SCSI,
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.of_match = sata_ceva_ids,
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.ops = &scsi_ops,
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.probe = sata_ceva_probe,
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.ofdata_to_platdata = sata_ceva_ofdata_to_platdata,
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};
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