ahci.h
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/*
* Copyright (C) Freescale Semiconductor, Inc. 2006.
* Author: Jason Jin<Jason.jin@freescale.com>
* Zhang Wei<wei.zhang@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _AHCI_H_
#define _AHCI_H_
#include <pci.h>
#define AHCI_PCI_BAR 0x24
#define AHCI_MAX_SG 56 /* hardware max is 64K */
#define AHCI_CMD_SLOT_SZ 32
#define AHCI_MAX_CMD_SLOT 32
#define AHCI_RX_FIS_SZ 256
#define AHCI_CMD_TBL_HDR 0x80
#define AHCI_CMD_TBL_CDB 0x40
#define AHCI_CMD_TBL_SZ AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16)
#define AHCI_PORT_PRIV_DMA_SZ (AHCI_CMD_SLOT_SZ * AHCI_MAX_CMD_SLOT + \
AHCI_CMD_TBL_SZ + AHCI_RX_FIS_SZ)
#define AHCI_CMD_ATAPI (1 << 5)
#define AHCI_CMD_WRITE (1 << 6)
#define AHCI_CMD_PREFETCH (1 << 7)
#define AHCI_CMD_RESET (1 << 8)
#define AHCI_CMD_CLR_BUSY (1 << 10)
#define RX_FIS_D2H_REG 0x40 /* offset of D2H Register FIS data */
/* Global controller registers */
#define HOST_CAP 0x00 /* host capabilities */
#define HOST_CTL 0x04 /* global host control */
#define HOST_IRQ_STAT 0x08 /* interrupt status */
#define HOST_PORTS_IMPL 0x0c /* bitmap of implemented ports */
#define HOST_VERSION 0x10 /* AHCI spec. version compliancy */
#define HOST_CAP2 0x24 /* host capabilities, extended */
/* HOST_CTL bits */
#define HOST_RESET (1 << 0) /* reset controller; self-clear */
#define HOST_IRQ_EN (1 << 1) /* global IRQ enable */
#define HOST_AHCI_EN (1 << 31) /* AHCI enabled */
/* Registers for each SATA port */
#define PORT_LST_ADDR 0x00 /* command list DMA addr */
#define PORT_LST_ADDR_HI 0x04 /* command list DMA addr hi */
#define PORT_FIS_ADDR 0x08 /* FIS rx buf addr */
#define PORT_FIS_ADDR_HI 0x0c /* FIS rx buf addr hi */
#define PORT_IRQ_STAT 0x10 /* interrupt status */
#define PORT_IRQ_MASK 0x14 /* interrupt enable/disable mask */
#define PORT_CMD 0x18 /* port command */
#define PORT_TFDATA 0x20 /* taskfile data */
#define PORT_SIG 0x24 /* device TF signature */
#define PORT_CMD_ISSUE 0x38 /* command issue */
#define PORT_SCR 0x28 /* SATA phy register block */
#define PORT_SCR_STAT 0x28 /* SATA phy register: SStatus */
#define PORT_SCR_CTL 0x2c /* SATA phy register: SControl */
#define PORT_SCR_ERR 0x30 /* SATA phy register: SError */
#define PORT_SCR_ACT 0x34 /* SATA phy register: SActive */
/* PORT_IRQ_{STAT,MASK} bits */
#define PORT_IRQ_COLD_PRES (1 << 31) /* cold presence detect */
#define PORT_IRQ_TF_ERR (1 << 30) /* task file error */
#define PORT_IRQ_HBUS_ERR (1 << 29) /* host bus fatal error */
#define PORT_IRQ_HBUS_DATA_ERR (1 << 28) /* host bus data error */
#define PORT_IRQ_IF_ERR (1 << 27) /* interface fatal error */
#define PORT_IRQ_IF_NONFATAL (1 << 26) /* interface non-fatal error */
#define PORT_IRQ_OVERFLOW (1 << 24) /* xfer exhausted available S/G */
#define PORT_IRQ_BAD_PMP (1 << 23) /* incorrect port multiplier */
#define PORT_IRQ_PHYRDY (1 << 22) /* PhyRdy changed */
#define PORT_IRQ_DEV_ILCK (1 << 7) /* device interlock */
#define PORT_IRQ_CONNECT (1 << 6) /* port connect change status */
#define PORT_IRQ_SG_DONE (1 << 5) /* descriptor processed */
#define PORT_IRQ_UNK_FIS (1 << 4) /* unknown FIS rx'd */
#define PORT_IRQ_SDB_FIS (1 << 3) /* Set Device Bits FIS rx'd */
#define PORT_IRQ_DMAS_FIS (1 << 2) /* DMA Setup FIS rx'd */
#define PORT_IRQ_PIOS_FIS (1 << 1) /* PIO Setup FIS rx'd */
#define PORT_IRQ_D2H_REG_FIS (1 << 0) /* D2H Register FIS rx'd */
#define PORT_IRQ_FATAL PORT_IRQ_TF_ERR | PORT_IRQ_HBUS_ERR \
| PORT_IRQ_HBUS_DATA_ERR | PORT_IRQ_IF_ERR
#define DEF_PORT_IRQ PORT_IRQ_FATAL | PORT_IRQ_PHYRDY \
| PORT_IRQ_CONNECT | PORT_IRQ_SG_DONE \
| PORT_IRQ_UNK_FIS | PORT_IRQ_SDB_FIS \
| PORT_IRQ_DMAS_FIS | PORT_IRQ_PIOS_FIS \
| PORT_IRQ_D2H_REG_FIS
/* PORT_SCR_STAT bits */
#define PORT_SCR_STAT_DET_MASK 0x3
#define PORT_SCR_STAT_DET_COMINIT 0x1
#define PORT_SCR_STAT_DET_PHYRDY 0x3
/* PORT_CMD bits */
#define PORT_CMD_ATAPI (1 << 24) /* Device is ATAPI */
#define PORT_CMD_LIST_ON (1 << 15) /* cmd list DMA engine running */
#define PORT_CMD_FIS_ON (1 << 14) /* FIS DMA engine running */
#define PORT_CMD_FIS_RX (1 << 4) /* Enable FIS receive DMA engine */
#define PORT_CMD_CLO (1 << 3) /* Command list override */
#define PORT_CMD_POWER_ON (1 << 2) /* Power up device */
#define PORT_CMD_SPIN_UP (1 << 1) /* Spin up device */
#define PORT_CMD_START (1 << 0) /* Enable port DMA engine */
#define PORT_CMD_ICC_ACTIVE (0x1 << 28) /* Put i/f in active state */
#define PORT_CMD_ICC_PARTIAL (0x2 << 28) /* Put i/f in partial state */
#define PORT_CMD_ICC_SLUMBER (0x6 << 28) /* Put i/f in slumber state */
#define AHCI_MAX_PORTS 32
#define ATA_FLAG_SATA (1 << 3)
#define ATA_FLAG_NO_LEGACY (1 << 4) /* no legacy mode check */
#define ATA_FLAG_MMIO (1 << 6) /* use MMIO, not PIO */
#define ATA_FLAG_SATA_RESET (1 << 7) /* (obsolete) use COMRESET */
#define ATA_FLAG_PIO_DMA (1 << 8) /* PIO cmds via DMA */
#define ATA_FLAG_NO_ATAPI (1 << 11) /* No ATAPI support */
struct ahci_cmd_hdr {
u32 opts;
u32 status;
u32 tbl_addr;
u32 tbl_addr_hi;
u32 reserved[4];
};
struct ahci_sg {
u32 addr;
u32 addr_hi;
u32 reserved;
u32 flags_size;
};
struct ahci_ioports {
u32 cmd_addr;
u32 scr_addr;
u32 port_mmio;
struct ahci_cmd_hdr *cmd_slot;
struct ahci_sg *cmd_tbl_sg;
u32 cmd_tbl;
u32 rx_fis;
};
struct ahci_probe_ent {
pci_dev_t dev;
struct ahci_ioports port[AHCI_MAX_PORTS];
u32 n_ports;
u32 hard_port_no;
u32 host_flags;
u32 host_set_flags;
u32 mmio_base;
u32 pio_mask;
u32 udma_mask;
u32 flags;
u32 cap; /* cache of HOST_CAP register */
u32 port_map; /* cache of HOST_PORTS_IMPL reg */
u32 link_port_map; /*linkup port map*/
};
int ahci_init(u32 base);
#endif