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681357ffd9
Some AHCI drivers use SCSI under the hood. Rather than making the AHCI driver be in the SCSI uclass it makes sense to have the AHCI device create a SCSI device as a child. That way we can handle any AHCI-specific operations rather than trying to pretend tha the device is just SCSI. To handle this we need to provide a way for AHCI drivers to bind a SCSI device as its child, and probe it. Add functions for this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
226 lines
7.3 KiB
C
226 lines
7.3 KiB
C
/*
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* Copyright (C) Freescale Semiconductor, Inc. 2006.
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* Author: Jason Jin<Jason.jin@freescale.com>
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* Zhang Wei<wei.zhang@freescale.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _AHCI_H_
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#define _AHCI_H_
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#include <pci.h>
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#define AHCI_PCI_BAR 0x24
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#define AHCI_MAX_SG 56 /* hardware max is 64K */
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#define AHCI_CMD_SLOT_SZ 32
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#define AHCI_MAX_CMD_SLOT 32
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#define AHCI_RX_FIS_SZ 256
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#define AHCI_CMD_TBL_HDR 0x80
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#define AHCI_CMD_TBL_CDB 0x40
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#define AHCI_CMD_TBL_SZ AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16)
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#define AHCI_PORT_PRIV_DMA_SZ (AHCI_CMD_SLOT_SZ * AHCI_MAX_CMD_SLOT + \
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AHCI_CMD_TBL_SZ + AHCI_RX_FIS_SZ)
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#define AHCI_CMD_ATAPI (1 << 5)
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#define AHCI_CMD_WRITE (1 << 6)
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#define AHCI_CMD_PREFETCH (1 << 7)
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#define AHCI_CMD_RESET (1 << 8)
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#define AHCI_CMD_CLR_BUSY (1 << 10)
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#define RX_FIS_D2H_REG 0x40 /* offset of D2H Register FIS data */
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/* Global controller registers */
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#define HOST_CAP 0x00 /* host capabilities */
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#define HOST_CTL 0x04 /* global host control */
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#define HOST_IRQ_STAT 0x08 /* interrupt status */
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#define HOST_PORTS_IMPL 0x0c /* bitmap of implemented ports */
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#define HOST_VERSION 0x10 /* AHCI spec. version compliancy */
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#define HOST_CAP2 0x24 /* host capabilities, extended */
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/* HOST_CTL bits */
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#define HOST_RESET (1 << 0) /* reset controller; self-clear */
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#define HOST_IRQ_EN (1 << 1) /* global IRQ enable */
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#define HOST_AHCI_EN (1 << 31) /* AHCI enabled */
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/* Registers for each SATA port */
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#define PORT_LST_ADDR 0x00 /* command list DMA addr */
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#define PORT_LST_ADDR_HI 0x04 /* command list DMA addr hi */
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#define PORT_FIS_ADDR 0x08 /* FIS rx buf addr */
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#define PORT_FIS_ADDR_HI 0x0c /* FIS rx buf addr hi */
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#define PORT_IRQ_STAT 0x10 /* interrupt status */
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#define PORT_IRQ_MASK 0x14 /* interrupt enable/disable mask */
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#define PORT_CMD 0x18 /* port command */
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#define PORT_TFDATA 0x20 /* taskfile data */
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#define PORT_SIG 0x24 /* device TF signature */
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#define PORT_CMD_ISSUE 0x38 /* command issue */
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#define PORT_SCR 0x28 /* SATA phy register block */
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#define PORT_SCR_STAT 0x28 /* SATA phy register: SStatus */
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#define PORT_SCR_CTL 0x2c /* SATA phy register: SControl */
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#define PORT_SCR_ERR 0x30 /* SATA phy register: SError */
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#define PORT_SCR_ACT 0x34 /* SATA phy register: SActive */
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#ifdef CONFIG_SUNXI_AHCI
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#define PORT_P0DMACR 0x70 /* SUNXI specific "DMA register" */
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#endif
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/* PORT_IRQ_{STAT,MASK} bits */
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#define PORT_IRQ_COLD_PRES (1 << 31) /* cold presence detect */
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#define PORT_IRQ_TF_ERR (1 << 30) /* task file error */
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#define PORT_IRQ_HBUS_ERR (1 << 29) /* host bus fatal error */
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#define PORT_IRQ_HBUS_DATA_ERR (1 << 28) /* host bus data error */
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#define PORT_IRQ_IF_ERR (1 << 27) /* interface fatal error */
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#define PORT_IRQ_IF_NONFATAL (1 << 26) /* interface non-fatal error */
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#define PORT_IRQ_OVERFLOW (1 << 24) /* xfer exhausted available S/G */
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#define PORT_IRQ_BAD_PMP (1 << 23) /* incorrect port multiplier */
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#define PORT_IRQ_PHYRDY (1 << 22) /* PhyRdy changed */
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#define PORT_IRQ_DEV_ILCK (1 << 7) /* device interlock */
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#define PORT_IRQ_CONNECT (1 << 6) /* port connect change status */
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#define PORT_IRQ_SG_DONE (1 << 5) /* descriptor processed */
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#define PORT_IRQ_UNK_FIS (1 << 4) /* unknown FIS rx'd */
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#define PORT_IRQ_SDB_FIS (1 << 3) /* Set Device Bits FIS rx'd */
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#define PORT_IRQ_DMAS_FIS (1 << 2) /* DMA Setup FIS rx'd */
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#define PORT_IRQ_PIOS_FIS (1 << 1) /* PIO Setup FIS rx'd */
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#define PORT_IRQ_D2H_REG_FIS (1 << 0) /* D2H Register FIS rx'd */
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#define PORT_IRQ_FATAL PORT_IRQ_TF_ERR | PORT_IRQ_HBUS_ERR \
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| PORT_IRQ_HBUS_DATA_ERR | PORT_IRQ_IF_ERR
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#define DEF_PORT_IRQ PORT_IRQ_FATAL | PORT_IRQ_PHYRDY \
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| PORT_IRQ_CONNECT | PORT_IRQ_SG_DONE \
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| PORT_IRQ_UNK_FIS | PORT_IRQ_SDB_FIS \
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| PORT_IRQ_DMAS_FIS | PORT_IRQ_PIOS_FIS \
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| PORT_IRQ_D2H_REG_FIS
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/* PORT_SCR_STAT bits */
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#define PORT_SCR_STAT_DET_MASK 0x3
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#define PORT_SCR_STAT_DET_COMINIT 0x1
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#define PORT_SCR_STAT_DET_PHYRDY 0x3
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/* PORT_CMD bits */
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#define PORT_CMD_ATAPI (1 << 24) /* Device is ATAPI */
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#define PORT_CMD_LIST_ON (1 << 15) /* cmd list DMA engine running */
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#define PORT_CMD_FIS_ON (1 << 14) /* FIS DMA engine running */
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#define PORT_CMD_FIS_RX (1 << 4) /* Enable FIS receive DMA engine */
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#define PORT_CMD_CLO (1 << 3) /* Command list override */
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#define PORT_CMD_POWER_ON (1 << 2) /* Power up device */
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#define PORT_CMD_SPIN_UP (1 << 1) /* Spin up device */
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#define PORT_CMD_START (1 << 0) /* Enable port DMA engine */
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#define PORT_CMD_ICC_ACTIVE (0x1 << 28) /* Put i/f in active state */
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#define PORT_CMD_ICC_PARTIAL (0x2 << 28) /* Put i/f in partial state */
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#define PORT_CMD_ICC_SLUMBER (0x6 << 28) /* Put i/f in slumber state */
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#define AHCI_MAX_PORTS 32
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#define ATA_FLAG_SATA (1 << 3)
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#define ATA_FLAG_NO_LEGACY (1 << 4) /* no legacy mode check */
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#define ATA_FLAG_MMIO (1 << 6) /* use MMIO, not PIO */
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#define ATA_FLAG_SATA_RESET (1 << 7) /* (obsolete) use COMRESET */
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#define ATA_FLAG_PIO_DMA (1 << 8) /* PIO cmds via DMA */
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#define ATA_FLAG_NO_ATAPI (1 << 11) /* No ATAPI support */
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struct ahci_cmd_hdr {
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u32 opts;
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u32 status;
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u32 tbl_addr;
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u32 tbl_addr_hi;
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u32 reserved[4];
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};
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struct ahci_sg {
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u32 addr;
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u32 addr_hi;
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u32 reserved;
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u32 flags_size;
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};
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struct ahci_ioports {
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void __iomem *cmd_addr;
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void __iomem *scr_addr;
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void __iomem *port_mmio;
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struct ahci_cmd_hdr *cmd_slot;
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struct ahci_sg *cmd_tbl_sg;
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ulong cmd_tbl;
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u32 rx_fis;
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};
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/**
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* struct ahci_uc_priv - information about an AHCI controller
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*
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* When driver model is used, this is accessible using dev_get_uclass_priv(dev)
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* where dev is the controller (although at present it sometimes stands alone).
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*/
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struct ahci_uc_priv {
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#if defined(CONFIG_DM_PCI) || defined(CONFIG_DM_SCSI)
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/*
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* TODO(sjg@chromium.org): Drop this once this structure is only used
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* in a driver-model context (i.e. attached to a device with
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* dev_get_uclass_priv()
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*/
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struct udevice *dev;
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#else
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pci_dev_t dev;
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#endif
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struct ahci_ioports port[AHCI_MAX_PORTS];
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u16 *ataid[AHCI_MAX_PORTS];
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u32 n_ports;
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u32 hard_port_no;
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u32 host_flags;
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u32 host_set_flags;
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void __iomem *mmio_base;
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u32 pio_mask;
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u32 udma_mask;
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u32 flags;
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u32 cap; /* cache of HOST_CAP register */
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u32 port_map; /* cache of HOST_PORTS_IMPL reg */
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u32 link_port_map; /*linkup port map*/
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};
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int ahci_init(void __iomem *base);
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int ahci_reset(void __iomem *base);
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/**
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* achi_init_one_dm() - set up a single AHCI port
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*
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* @dev: Controller to init
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*/
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int achi_init_one_dm(struct udevice *dev);
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/**
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* achi_start_ports_dm() - start all AHCI ports for a controller
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*
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* @dev: Controller containing ports to start
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*/
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int achi_start_ports_dm(struct udevice *dev);
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/**
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* ahci_init_dm() - init AHCI for a controller, finding all ports
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*
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* @dev: Device to init
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*/
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int ahci_init_dm(struct udevice *dev, void __iomem *base);
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/**
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* ahci_bind_scsi() - bind a new SCSI bus as a child
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*
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* Note that the SCSI bus device will itself bind block devices
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*
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* @ahci_dev: AHCI parent device
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* @devp: Returns new SCSI bus device
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* @return 0 if OK, -ve on error
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*/
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int ahci_bind_scsi(struct udevice *ahci_dev, struct udevice **devp);
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/**
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* ahci_probe_scsi() - probe and scan the attached SCSI bus
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*
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* Note that the SCSI device will itself bind block devices for any storage
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* devices it finds.
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*
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* @ahci_dev: AHCI parent device
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* @return 0 if OK, -ve on error
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*/
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int ahci_probe_scsi(struct udevice *ahci_dev);
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#endif
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