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marcus.erl |
/*
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* drivers/ata/sata_fsl.c
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*
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* Freescale 3.0Gbps SATA device driver
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*
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* Author: Ashish Kalra <ashish.kalra@freescale.com>
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* Li Yang <leoli@freescale.com>
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*
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* Copyright (c) 2006-2007 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_cmnd.h>
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#include <linux/libata.h>
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#include <asm/io.h>
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#include <linux/of_platform.h>
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/* Controller information */
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enum {
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SATA_FSL_QUEUE_DEPTH = 16,
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SATA_FSL_MAX_PRD = 63,
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SATA_FSL_MAX_PRD_USABLE = SATA_FSL_MAX_PRD - 1,
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SATA_FSL_MAX_PRD_DIRECT = 16, /* Direct PRDT entries */
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SATA_FSL_HOST_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
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ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
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ATA_FLAG_NCQ),
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SATA_FSL_HOST_LFLAGS = ATA_LFLAG_SKIP_D2H_BSY,
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SATA_FSL_MAX_CMDS = SATA_FSL_QUEUE_DEPTH,
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SATA_FSL_CMD_HDR_SIZE = 16, /* 4 DWORDS */
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SATA_FSL_CMD_SLOT_SIZE = (SATA_FSL_MAX_CMDS * SATA_FSL_CMD_HDR_SIZE),
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/*
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* SATA-FSL host controller supports a max. of (15+1) direct PRDEs, and
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* chained indirect PRDEs upto a max count of 63.
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* We are allocating an array of 63 PRDEs contigiously, but PRDE#15 will
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* be setup as an indirect descriptor, pointing to it's next
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* (contigious) PRDE. Though chained indirect PRDE arrays are
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* supported,it will be more efficient to use a direct PRDT and
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* a single chain/link to indirect PRDE array/PRDT.
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*/
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SATA_FSL_CMD_DESC_CFIS_SZ = 32,
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SATA_FSL_CMD_DESC_SFIS_SZ = 32,
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SATA_FSL_CMD_DESC_ACMD_SZ = 16,
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SATA_FSL_CMD_DESC_RSRVD = 16,
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SATA_FSL_CMD_DESC_SIZE = (SATA_FSL_CMD_DESC_CFIS_SZ +
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SATA_FSL_CMD_DESC_SFIS_SZ +
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SATA_FSL_CMD_DESC_ACMD_SZ +
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SATA_FSL_CMD_DESC_RSRVD +
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SATA_FSL_MAX_PRD * 16),
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SATA_FSL_CMD_DESC_OFFSET_TO_PRDT =
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(SATA_FSL_CMD_DESC_CFIS_SZ +
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SATA_FSL_CMD_DESC_SFIS_SZ +
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SATA_FSL_CMD_DESC_ACMD_SZ +
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SATA_FSL_CMD_DESC_RSRVD),
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SATA_FSL_CMD_DESC_AR_SZ = (SATA_FSL_CMD_DESC_SIZE * SATA_FSL_MAX_CMDS),
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SATA_FSL_PORT_PRIV_DMA_SZ = (SATA_FSL_CMD_SLOT_SIZE +
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SATA_FSL_CMD_DESC_AR_SZ),
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/*
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* MPC8315 has two SATA controllers, SATA1 & SATA2
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* (one port per controller)
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* MPC837x has 2/4 controllers, one port per controller
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*/
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SATA_FSL_MAX_PORTS = 1,
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SATA_FSL_IRQ_FLAG = IRQF_SHARED,
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};
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/*
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* Host Controller command register set - per port
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*/
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enum {
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CQ = 0,
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CA = 8,
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CC = 0x10,
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CE = 0x18,
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DE = 0x20,
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CHBA = 0x24,
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HSTATUS = 0x28,
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HCONTROL = 0x2C,
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CQPMP = 0x30,
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SIGNATURE = 0x34,
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ICC = 0x38,
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/*
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* Host Status Register (HStatus) bitdefs
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*/
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ONLINE = (1 << 31),
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GOING_OFFLINE = (1 << 30),
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BIST_ERR = (1 << 29),
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FATAL_ERR_HC_MASTER_ERR = (1 << 18),
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FATAL_ERR_PARITY_ERR_TX = (1 << 17),
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FATAL_ERR_PARITY_ERR_RX = (1 << 16),
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FATAL_ERR_DATA_UNDERRUN = (1 << 13),
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FATAL_ERR_DATA_OVERRUN = (1 << 12),
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FATAL_ERR_CRC_ERR_TX = (1 << 11),
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FATAL_ERR_CRC_ERR_RX = (1 << 10),
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FATAL_ERR_FIFO_OVRFL_TX = (1 << 9),
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FATAL_ERR_FIFO_OVRFL_RX = (1 << 8),
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FATAL_ERROR_DECODE = FATAL_ERR_HC_MASTER_ERR |
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FATAL_ERR_PARITY_ERR_TX |
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FATAL_ERR_PARITY_ERR_RX |
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FATAL_ERR_DATA_UNDERRUN |
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FATAL_ERR_DATA_OVERRUN |
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FATAL_ERR_CRC_ERR_TX |
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FATAL_ERR_CRC_ERR_RX |
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FATAL_ERR_FIFO_OVRFL_TX | FATAL_ERR_FIFO_OVRFL_RX,
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127 |
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128 |
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INT_ON_FATAL_ERR = (1 << 5),
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INT_ON_PHYRDY_CHG = (1 << 4),
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INT_ON_SIGNATURE_UPDATE = (1 << 3),
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INT_ON_SNOTIFY_UPDATE = (1 << 2),
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INT_ON_SINGL_DEVICE_ERR = (1 << 1),
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INT_ON_CMD_COMPLETE = 1,
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INT_ON_ERROR = INT_ON_FATAL_ERR |
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INT_ON_PHYRDY_CHG | INT_ON_SINGL_DEVICE_ERR,
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/*
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* Host Control Register (HControl) bitdefs
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*/
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HCONTROL_ONLINE_PHY_RST = (1 << 31),
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HCONTROL_FORCE_OFFLINE = (1 << 30),
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HCONTROL_PARITY_PROT_MOD = (1 << 14),
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HCONTROL_DPATH_PARITY = (1 << 12),
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HCONTROL_SNOOP_ENABLE = (1 << 10),
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HCONTROL_PMP_ATTACHED = (1 << 9),
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HCONTROL_COPYOUT_STATFIS = (1 << 8),
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IE_ON_FATAL_ERR = (1 << 5),
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IE_ON_PHYRDY_CHG = (1 << 4),
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IE_ON_SIGNATURE_UPDATE = (1 << 3),
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IE_ON_SNOTIFY_UPDATE = (1 << 2),
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IE_ON_SINGL_DEVICE_ERR = (1 << 1),
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IE_ON_CMD_COMPLETE = 1,
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DEFAULT_PORT_IRQ_ENABLE_MASK = IE_ON_FATAL_ERR | IE_ON_PHYRDY_CHG |
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IE_ON_SIGNATURE_UPDATE |
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IE_ON_SINGL_DEVICE_ERR | IE_ON_CMD_COMPLETE,
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EXT_INDIRECT_SEG_PRD_FLAG = (1 << 31),
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DATA_SNOOP_ENABLE = (1 << 22),
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};
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/*
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* SATA Superset Registers
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*/
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enum {
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SSTATUS = 0,
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SERROR = 4,
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SCONTROL = 8,
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SNOTIFY = 0xC,
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};
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/*
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* Control Status Register Set
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*/
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enum {
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TRANSCFG = 0,
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TRANSSTATUS = 4,
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LINKCFG = 8,
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LINKCFG1 = 0xC,
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LINKCFG2 = 0x10,
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LINKSTATUS = 0x14,
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LINKSTATUS1 = 0x18,
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PHYCTRLCFG = 0x1C,
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COMMANDSTAT = 0x20,
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};
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/* PHY (link-layer) configuration control */
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enum {
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PHY_BIST_ENABLE = 0x01,
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};
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/*
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* Command Header Table entry, i.e, command slot
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* 4 Dwords per command slot, command header size == 64 Dwords.
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*/
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struct cmdhdr_tbl_entry {
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u32 cda;
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u32 prde_fis_len;
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u32 ttl;
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u32 desc_info;
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};
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/*
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* Description information bitdefs
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*/
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enum {
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VENDOR_SPECIFIC_BIST = (1 << 10),
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CMD_DESC_SNOOP_ENABLE = (1 << 9),
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FPDMA_QUEUED_CMD = (1 << 8),
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SRST_CMD = (1 << 7),
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BIST = (1 << 6),
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ATAPI_CMD = (1 << 5),
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};
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/*
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* Command Descriptor
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*/
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struct command_desc {
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u8 cfis[8 * 4];
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u8 sfis[8 * 4];
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u8 acmd[4 * 4];
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u8 fill[4 * 4];
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u32 prdt[SATA_FSL_MAX_PRD_DIRECT * 4];
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u32 prdt_indirect[(SATA_FSL_MAX_PRD - SATA_FSL_MAX_PRD_DIRECT) * 4];
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};
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229 |
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/*
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* Physical region table descriptor(PRD)
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*/
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struct prde {
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u32 dba;
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u8 fill[2 * 4];
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u32 ddc_and_ext;
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};
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239 |
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/*
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* ata_port private data
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241 |
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* This is our per-port instance data.
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*/
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243 |
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struct sata_fsl_port_priv {
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244 |
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struct cmdhdr_tbl_entry *cmdslot;
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dma_addr_t cmdslot_paddr;
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struct command_desc *cmdentry;
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dma_addr_t cmdentry_paddr;
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/*
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250 |
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* SATA FSL controller has a Status FIS which should contain the
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* received D2H FIS & taskfile registers. This SFIS is present in
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* the command descriptor, and to have a ready reference to it,
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* we are caching it here, quite similar to what is done in H/W on
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254 |
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* AHCI compliant devices by copying taskfile fields to a 32-bit
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* register.
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256 |
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*/
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257 |
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struct ata_taskfile tf;
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259 |
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};
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260 |
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261 |
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/*
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262 |
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* ata_port->host_set private data
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263 |
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*/
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264 |
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struct sata_fsl_host_priv {
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265 |
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void __iomem *hcr_base;
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266 |
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void __iomem *ssr_base;
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267 |
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void __iomem *csr_base;
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268 |
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int irq;
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};
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270 |
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271 |
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static inline unsigned int sata_fsl_tag(unsigned int tag,
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void __iomem *hcr_base)
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{
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274 |
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/* We let libATA core do actual (queue) tag allocation */
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275 |
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276 |
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/* all non NCQ/queued commands should have tag#0 */
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277 |
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if (ata_tag_internal(tag)) {
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278 |
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DPRINTK("mapping internal cmds to tag#0\n");
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279 |
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return 0;
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280 |
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}
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281 |
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282 |
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if (unlikely(tag >= SATA_FSL_QUEUE_DEPTH)) {
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283 |
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DPRINTK("tag %d invalid : out of range\n", tag);
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284 |
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return 0;
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285 |
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}
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286 |
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|
287 |
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if (unlikely((ioread32(hcr_base + CQ)) & (1 << tag))) {
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288 |
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DPRINTK("tag %d invalid : in use!!\n", tag);
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289 |
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return 0;
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290 |
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}
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291 |
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292 |
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return tag;
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293 |
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}
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294 |
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295 |
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static void sata_fsl_setup_cmd_hdr_entry(struct sata_fsl_port_priv *pp,
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296 |
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unsigned int tag, u32 desc_info,
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297 |
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u32 data_xfer_len, u8 num_prde,
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298 |
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u8 fis_len)
|
299 |
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{
|
300 |
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dma_addr_t cmd_descriptor_address;
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301 |
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|
302 |
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cmd_descriptor_address = pp->cmdentry_paddr +
|
303 |
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tag * SATA_FSL_CMD_DESC_SIZE;
|
304 |
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|
305 |
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/* NOTE: both data_xfer_len & fis_len are Dword counts */
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306 |
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|
307 |
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pp->cmdslot[tag].cda = cpu_to_le32(cmd_descriptor_address);
|
308 |
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pp->cmdslot[tag].prde_fis_len =
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309 |
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cpu_to_le32((num_prde << 16) | (fis_len << 2));
|
310 |
|
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pp->cmdslot[tag].ttl = cpu_to_le32(data_xfer_len & ~0x03);
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311 |
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pp->cmdslot[tag].desc_info = cpu_to_le32(desc_info | (tag & 0x1F));
|
312 |
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|
313 |
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VPRINTK("cda=0x%x, prde_fis_len=0x%x, ttl=0x%x, di=0x%x\n",
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314 |
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pp->cmdslot[tag].cda,
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315 |
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pp->cmdslot[tag].prde_fis_len,
|
316 |
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pp->cmdslot[tag].ttl, pp->cmdslot[tag].desc_info);
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317 |
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|
318 |
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}
|
319 |
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|
320 |
|
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static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
|
321 |
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u32 *ttl, dma_addr_t cmd_desc_paddr)
|
322 |
|
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{
|
323 |
|
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struct scatterlist *sg;
|
324 |
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unsigned int num_prde = 0;
|
325 |
|
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u32 ttl_dwords = 0;
|
326 |
|
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|
327 |
|
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/*
|
328 |
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* NOTE : direct & indirect prdt's are contigiously allocated
|
329 |
|
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*/
|
330 |
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struct prde *prd = (struct prde *)&((struct command_desc *)
|
331 |
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cmd_desc)->prdt;
|
332 |
|
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|
333 |
|
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struct prde *prd_ptr_to_indirect_ext = NULL;
|
334 |
|
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unsigned indirect_ext_segment_sz = 0;
|
335 |
|
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dma_addr_t indirect_ext_segment_paddr;
|
336 |
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|
337 |
|
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VPRINTK("SATA FSL : cd = 0x%x, prd = 0x%x\n", cmd_desc, prd);
|
338 |
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|
339 |
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indirect_ext_segment_paddr = cmd_desc_paddr +
|
340 |
|
|
SATA_FSL_CMD_DESC_OFFSET_TO_PRDT + SATA_FSL_MAX_PRD_DIRECT * 16;
|
341 |
|
|
|
342 |
|
|
ata_for_each_sg(sg, qc) {
|
343 |
|
|
dma_addr_t sg_addr = sg_dma_address(sg);
|
344 |
|
|
u32 sg_len = sg_dma_len(sg);
|
345 |
|
|
|
346 |
|
|
VPRINTK("SATA FSL : fill_sg, sg_addr = 0x%x, sg_len = %d\n",
|
347 |
|
|
sg_addr, sg_len);
|
348 |
|
|
|
349 |
|
|
/* warn if each s/g element is not dword aligned */
|
350 |
|
|
if (sg_addr & 0x03)
|
351 |
|
|
ata_port_printk(qc->ap, KERN_ERR,
|
352 |
|
|
"s/g addr unaligned : 0x%x\n", sg_addr);
|
353 |
|
|
if (sg_len & 0x03)
|
354 |
|
|
ata_port_printk(qc->ap, KERN_ERR,
|
355 |
|
|
"s/g len unaligned : 0x%x\n", sg_len);
|
356 |
|
|
|
357 |
|
|
if ((num_prde == (SATA_FSL_MAX_PRD_DIRECT - 1)) &&
|
358 |
|
|
(qc->n_iter + 1 != qc->n_elem)) {
|
359 |
|
|
VPRINTK("setting indirect prde\n");
|
360 |
|
|
prd_ptr_to_indirect_ext = prd;
|
361 |
|
|
prd->dba = cpu_to_le32(indirect_ext_segment_paddr);
|
362 |
|
|
indirect_ext_segment_sz = 0;
|
363 |
|
|
++prd;
|
364 |
|
|
++num_prde;
|
365 |
|
|
}
|
366 |
|
|
|
367 |
|
|
ttl_dwords += sg_len;
|
368 |
|
|
prd->dba = cpu_to_le32(sg_addr);
|
369 |
|
|
prd->ddc_and_ext =
|
370 |
|
|
cpu_to_le32(DATA_SNOOP_ENABLE | (sg_len & ~0x03));
|
371 |
|
|
|
372 |
|
|
VPRINTK("sg_fill, ttl=%d, dba=0x%x, ddc=0x%x\n",
|
373 |
|
|
ttl_dwords, prd->dba, prd->ddc_and_ext);
|
374 |
|
|
|
375 |
|
|
++num_prde;
|
376 |
|
|
++prd;
|
377 |
|
|
if (prd_ptr_to_indirect_ext)
|
378 |
|
|
indirect_ext_segment_sz += sg_len;
|
379 |
|
|
}
|
380 |
|
|
|
381 |
|
|
if (prd_ptr_to_indirect_ext) {
|
382 |
|
|
/* set indirect extension flag along with indirect ext. size */
|
383 |
|
|
prd_ptr_to_indirect_ext->ddc_and_ext =
|
384 |
|
|
cpu_to_le32((EXT_INDIRECT_SEG_PRD_FLAG |
|
385 |
|
|
DATA_SNOOP_ENABLE |
|
386 |
|
|
(indirect_ext_segment_sz & ~0x03)));
|
387 |
|
|
}
|
388 |
|
|
|
389 |
|
|
*ttl = ttl_dwords;
|
390 |
|
|
return num_prde;
|
391 |
|
|
}
|
392 |
|
|
|
393 |
|
|
static void sata_fsl_qc_prep(struct ata_queued_cmd *qc)
|
394 |
|
|
{
|
395 |
|
|
struct ata_port *ap = qc->ap;
|
396 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
397 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
398 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
399 |
|
|
unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
|
400 |
|
|
struct command_desc *cd;
|
401 |
|
|
u32 desc_info = CMD_DESC_SNOOP_ENABLE;
|
402 |
|
|
u32 num_prde = 0;
|
403 |
|
|
u32 ttl_dwords = 0;
|
404 |
|
|
dma_addr_t cd_paddr;
|
405 |
|
|
|
406 |
|
|
cd = (struct command_desc *)pp->cmdentry + tag;
|
407 |
|
|
cd_paddr = pp->cmdentry_paddr + tag * SATA_FSL_CMD_DESC_SIZE;
|
408 |
|
|
|
409 |
|
|
ata_tf_to_fis(&qc->tf, 0, 1, (u8 *) &cd->cfis);
|
410 |
|
|
|
411 |
|
|
VPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x\n",
|
412 |
|
|
cd->cfis[0], cd->cfis[1], cd->cfis[2]);
|
413 |
|
|
|
414 |
|
|
if (qc->tf.protocol == ATA_PROT_NCQ) {
|
415 |
|
|
VPRINTK("FPDMA xfer,Sctor cnt[0:7],[8:15] = %d,%d\n",
|
416 |
|
|
cd->cfis[3], cd->cfis[11]);
|
417 |
|
|
}
|
418 |
|
|
|
419 |
|
|
/* setup "ACMD - atapi command" in cmd. desc. if this is ATAPI cmd */
|
420 |
|
|
if (is_atapi_taskfile(&qc->tf)) {
|
421 |
|
|
desc_info |= ATAPI_CMD;
|
422 |
|
|
memset((void *)&cd->acmd, 0, 32);
|
423 |
|
|
memcpy((void *)&cd->acmd, qc->cdb, qc->dev->cdb_len);
|
424 |
|
|
}
|
425 |
|
|
|
426 |
|
|
if (qc->flags & ATA_QCFLAG_DMAMAP)
|
427 |
|
|
num_prde = sata_fsl_fill_sg(qc, (void *)cd,
|
428 |
|
|
&ttl_dwords, cd_paddr);
|
429 |
|
|
|
430 |
|
|
if (qc->tf.protocol == ATA_PROT_NCQ)
|
431 |
|
|
desc_info |= FPDMA_QUEUED_CMD;
|
432 |
|
|
|
433 |
|
|
sata_fsl_setup_cmd_hdr_entry(pp, tag, desc_info, ttl_dwords,
|
434 |
|
|
num_prde, 5);
|
435 |
|
|
|
436 |
|
|
VPRINTK("SATA FSL : xx_qc_prep, di = 0x%x, ttl = %d, num_prde = %d\n",
|
437 |
|
|
desc_info, ttl_dwords, num_prde);
|
438 |
|
|
}
|
439 |
|
|
|
440 |
|
|
static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc)
|
441 |
|
|
{
|
442 |
|
|
struct ata_port *ap = qc->ap;
|
443 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
444 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
445 |
|
|
unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
|
446 |
|
|
|
447 |
|
|
VPRINTK("xx_qc_issue called,CQ=0x%x,CA=0x%x,CE=0x%x,CC=0x%x\n",
|
448 |
|
|
ioread32(CQ + hcr_base),
|
449 |
|
|
ioread32(CA + hcr_base),
|
450 |
|
|
ioread32(CE + hcr_base), ioread32(CC + hcr_base));
|
451 |
|
|
|
452 |
|
|
/* Simply queue command to the controller/device */
|
453 |
|
|
iowrite32(1 << tag, CQ + hcr_base);
|
454 |
|
|
|
455 |
|
|
VPRINTK("xx_qc_issue called, tag=%d, CQ=0x%x, CA=0x%x\n",
|
456 |
|
|
tag, ioread32(CQ + hcr_base), ioread32(CA + hcr_base));
|
457 |
|
|
|
458 |
|
|
VPRINTK("CE=0x%x, DE=0x%x, CC=0x%x, CmdStat = 0x%x\n",
|
459 |
|
|
ioread32(CE + hcr_base),
|
460 |
|
|
ioread32(DE + hcr_base),
|
461 |
|
|
ioread32(CC + hcr_base), ioread32(COMMANDSTAT + csr_base));
|
462 |
|
|
|
463 |
|
|
return 0;
|
464 |
|
|
}
|
465 |
|
|
|
466 |
|
|
static int sata_fsl_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
|
467 |
|
|
u32 val)
|
468 |
|
|
{
|
469 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
470 |
|
|
void __iomem *ssr_base = host_priv->ssr_base;
|
471 |
|
|
unsigned int sc_reg;
|
472 |
|
|
|
473 |
|
|
switch (sc_reg_in) {
|
474 |
|
|
case SCR_STATUS:
|
475 |
|
|
case SCR_ERROR:
|
476 |
|
|
case SCR_CONTROL:
|
477 |
|
|
case SCR_ACTIVE:
|
478 |
|
|
sc_reg = sc_reg_in;
|
479 |
|
|
break;
|
480 |
|
|
default:
|
481 |
|
|
return -EINVAL;
|
482 |
|
|
}
|
483 |
|
|
|
484 |
|
|
VPRINTK("xx_scr_write, reg_in = %d\n", sc_reg);
|
485 |
|
|
|
486 |
|
|
iowrite32(val, ssr_base + (sc_reg * 4));
|
487 |
|
|
return 0;
|
488 |
|
|
}
|
489 |
|
|
|
490 |
|
|
static int sata_fsl_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
|
491 |
|
|
u32 *val)
|
492 |
|
|
{
|
493 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
494 |
|
|
void __iomem *ssr_base = host_priv->ssr_base;
|
495 |
|
|
unsigned int sc_reg;
|
496 |
|
|
|
497 |
|
|
switch (sc_reg_in) {
|
498 |
|
|
case SCR_STATUS:
|
499 |
|
|
case SCR_ERROR:
|
500 |
|
|
case SCR_CONTROL:
|
501 |
|
|
case SCR_ACTIVE:
|
502 |
|
|
sc_reg = sc_reg_in;
|
503 |
|
|
break;
|
504 |
|
|
default:
|
505 |
|
|
return -EINVAL;
|
506 |
|
|
}
|
507 |
|
|
|
508 |
|
|
VPRINTK("xx_scr_read, reg_in = %d\n", sc_reg);
|
509 |
|
|
|
510 |
|
|
*val = ioread32(ssr_base + (sc_reg * 4));
|
511 |
|
|
return 0;
|
512 |
|
|
}
|
513 |
|
|
|
514 |
|
|
static void sata_fsl_freeze(struct ata_port *ap)
|
515 |
|
|
{
|
516 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
517 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
518 |
|
|
u32 temp;
|
519 |
|
|
|
520 |
|
|
VPRINTK("xx_freeze, CQ=0x%x, CA=0x%x, CE=0x%x, DE=0x%x\n",
|
521 |
|
|
ioread32(CQ + hcr_base),
|
522 |
|
|
ioread32(CA + hcr_base),
|
523 |
|
|
ioread32(CE + hcr_base), ioread32(DE + hcr_base));
|
524 |
|
|
VPRINTK("CmdStat = 0x%x\n", ioread32(csr_base + COMMANDSTAT));
|
525 |
|
|
|
526 |
|
|
/* disable interrupts on the controller/port */
|
527 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
528 |
|
|
iowrite32((temp & ~0x3F), hcr_base + HCONTROL);
|
529 |
|
|
|
530 |
|
|
VPRINTK("in xx_freeze : HControl = 0x%x, HStatus = 0x%x\n",
|
531 |
|
|
ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS));
|
532 |
|
|
}
|
533 |
|
|
|
534 |
|
|
static void sata_fsl_thaw(struct ata_port *ap)
|
535 |
|
|
{
|
536 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
537 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
538 |
|
|
u32 temp;
|
539 |
|
|
|
540 |
|
|
/* ack. any pending IRQs for this controller/port */
|
541 |
|
|
temp = ioread32(hcr_base + HSTATUS);
|
542 |
|
|
|
543 |
|
|
VPRINTK("xx_thaw, pending IRQs = 0x%x\n", (temp & 0x3F));
|
544 |
|
|
|
545 |
|
|
if (temp & 0x3F)
|
546 |
|
|
iowrite32((temp & 0x3F), hcr_base + HSTATUS);
|
547 |
|
|
|
548 |
|
|
/* enable interrupts on the controller/port */
|
549 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
550 |
|
|
iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL);
|
551 |
|
|
|
552 |
|
|
VPRINTK("xx_thaw : HControl = 0x%x, HStatus = 0x%x\n",
|
553 |
|
|
ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS));
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
/*
|
557 |
|
|
* NOTE : 1st D2H FIS from device does not update sfis in command descriptor.
|
558 |
|
|
*/
|
559 |
|
|
static inline void sata_fsl_cache_taskfile_from_d2h_fis(struct ata_queued_cmd
|
560 |
|
|
*qc,
|
561 |
|
|
struct ata_port *ap)
|
562 |
|
|
{
|
563 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
564 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
565 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
566 |
|
|
unsigned int tag = sata_fsl_tag(qc->tag, hcr_base);
|
567 |
|
|
struct command_desc *cd;
|
568 |
|
|
|
569 |
|
|
cd = pp->cmdentry + tag;
|
570 |
|
|
|
571 |
|
|
ata_tf_from_fis(cd->sfis, &pp->tf);
|
572 |
|
|
}
|
573 |
|
|
|
574 |
|
|
static u8 sata_fsl_check_status(struct ata_port *ap)
|
575 |
|
|
{
|
576 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
577 |
|
|
|
578 |
|
|
return pp->tf.command;
|
579 |
|
|
}
|
580 |
|
|
|
581 |
|
|
static void sata_fsl_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
|
582 |
|
|
{
|
583 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
584 |
|
|
|
585 |
|
|
*tf = pp->tf;
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
static int sata_fsl_port_start(struct ata_port *ap)
|
589 |
|
|
{
|
590 |
|
|
struct device *dev = ap->host->dev;
|
591 |
|
|
struct sata_fsl_port_priv *pp;
|
592 |
|
|
int retval;
|
593 |
|
|
void *mem;
|
594 |
|
|
dma_addr_t mem_dma;
|
595 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
596 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
597 |
|
|
u32 temp;
|
598 |
|
|
|
599 |
|
|
pp = kzalloc(sizeof(*pp), GFP_KERNEL);
|
600 |
|
|
if (!pp)
|
601 |
|
|
return -ENOMEM;
|
602 |
|
|
|
603 |
|
|
/*
|
604 |
|
|
* allocate per command dma alignment pad buffer, which is used
|
605 |
|
|
* internally by libATA to ensure that all transfers ending on
|
606 |
|
|
* unaligned boundaries are padded, to align on Dword boundaries
|
607 |
|
|
*/
|
608 |
|
|
retval = ata_pad_alloc(ap, dev);
|
609 |
|
|
if (retval) {
|
610 |
|
|
kfree(pp);
|
611 |
|
|
return retval;
|
612 |
|
|
}
|
613 |
|
|
|
614 |
|
|
mem = dma_alloc_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ, &mem_dma,
|
615 |
|
|
GFP_KERNEL);
|
616 |
|
|
if (!mem) {
|
617 |
|
|
ata_pad_free(ap, dev);
|
618 |
|
|
kfree(pp);
|
619 |
|
|
return -ENOMEM;
|
620 |
|
|
}
|
621 |
|
|
memset(mem, 0, SATA_FSL_PORT_PRIV_DMA_SZ);
|
622 |
|
|
|
623 |
|
|
pp->cmdslot = mem;
|
624 |
|
|
pp->cmdslot_paddr = mem_dma;
|
625 |
|
|
|
626 |
|
|
mem += SATA_FSL_CMD_SLOT_SIZE;
|
627 |
|
|
mem_dma += SATA_FSL_CMD_SLOT_SIZE;
|
628 |
|
|
|
629 |
|
|
pp->cmdentry = mem;
|
630 |
|
|
pp->cmdentry_paddr = mem_dma;
|
631 |
|
|
|
632 |
|
|
ap->private_data = pp;
|
633 |
|
|
|
634 |
|
|
VPRINTK("CHBA = 0x%x, cmdentry_phys = 0x%x\n",
|
635 |
|
|
pp->cmdslot_paddr, pp->cmdentry_paddr);
|
636 |
|
|
|
637 |
|
|
/* Now, update the CHBA register in host controller cmd register set */
|
638 |
|
|
iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
|
639 |
|
|
|
640 |
|
|
/*
|
641 |
|
|
* Now, we can bring the controller on-line & also initiate
|
642 |
|
|
* the COMINIT sequence, we simply return here and the boot-probing
|
643 |
|
|
* & device discovery process is re-initiated by libATA using a
|
644 |
|
|
* Softreset EH (dummy) session. Hence, boot probing and device
|
645 |
|
|
* discovey will be part of sata_fsl_softreset() callback.
|
646 |
|
|
*/
|
647 |
|
|
|
648 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
649 |
|
|
iowrite32((temp | HCONTROL_ONLINE_PHY_RST), hcr_base + HCONTROL);
|
650 |
|
|
|
651 |
|
|
VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
652 |
|
|
VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
653 |
|
|
VPRINTK("CHBA = 0x%x\n", ioread32(hcr_base + CHBA));
|
654 |
|
|
|
655 |
|
|
#ifdef CONFIG_MPC8315_DS
|
656 |
|
|
/*
|
657 |
|
|
* Workaround for 8315DS board 3gbps link-up issue,
|
658 |
|
|
* currently limit SATA port to GEN1 speed
|
659 |
|
|
*/
|
660 |
|
|
sata_fsl_scr_read(ap, SCR_CONTROL, &temp);
|
661 |
|
|
temp &= ~(0xF << 4);
|
662 |
|
|
temp |= (0x1 << 4);
|
663 |
|
|
sata_fsl_scr_write(ap, SCR_CONTROL, temp);
|
664 |
|
|
|
665 |
|
|
sata_fsl_scr_read(ap, SCR_CONTROL, &temp);
|
666 |
|
|
dev_printk(KERN_WARNING, dev, "scr_control, speed limited to %x\n",
|
667 |
|
|
temp);
|
668 |
|
|
#endif
|
669 |
|
|
|
670 |
|
|
return 0;
|
671 |
|
|
}
|
672 |
|
|
|
673 |
|
|
static void sata_fsl_port_stop(struct ata_port *ap)
|
674 |
|
|
{
|
675 |
|
|
struct device *dev = ap->host->dev;
|
676 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
677 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
678 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
679 |
|
|
u32 temp;
|
680 |
|
|
|
681 |
|
|
/*
|
682 |
|
|
* Force host controller to go off-line, aborting current operations
|
683 |
|
|
*/
|
684 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
685 |
|
|
temp &= ~HCONTROL_ONLINE_PHY_RST;
|
686 |
|
|
temp |= HCONTROL_FORCE_OFFLINE;
|
687 |
|
|
iowrite32(temp, hcr_base + HCONTROL);
|
688 |
|
|
|
689 |
|
|
/* Poll for controller to go offline - should happen immediately */
|
690 |
|
|
ata_wait_register(hcr_base + HSTATUS, ONLINE, ONLINE, 1, 1);
|
691 |
|
|
|
692 |
|
|
ap->private_data = NULL;
|
693 |
|
|
dma_free_coherent(dev, SATA_FSL_PORT_PRIV_DMA_SZ,
|
694 |
|
|
pp->cmdslot, pp->cmdslot_paddr);
|
695 |
|
|
|
696 |
|
|
ata_pad_free(ap, dev);
|
697 |
|
|
kfree(pp);
|
698 |
|
|
}
|
699 |
|
|
|
700 |
|
|
static unsigned int sata_fsl_dev_classify(struct ata_port *ap)
|
701 |
|
|
{
|
702 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
703 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
704 |
|
|
struct ata_taskfile tf;
|
705 |
|
|
u32 temp;
|
706 |
|
|
|
707 |
|
|
temp = ioread32(hcr_base + SIGNATURE);
|
708 |
|
|
|
709 |
|
|
VPRINTK("raw sig = 0x%x\n", temp);
|
710 |
|
|
VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
711 |
|
|
VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
712 |
|
|
|
713 |
|
|
tf.lbah = (temp >> 24) & 0xff;
|
714 |
|
|
tf.lbam = (temp >> 16) & 0xff;
|
715 |
|
|
tf.lbal = (temp >> 8) & 0xff;
|
716 |
|
|
tf.nsect = temp & 0xff;
|
717 |
|
|
|
718 |
|
|
return ata_dev_classify(&tf);
|
719 |
|
|
}
|
720 |
|
|
|
721 |
|
|
static int sata_fsl_softreset(struct ata_link *link, unsigned int *class,
|
722 |
|
|
unsigned long deadline)
|
723 |
|
|
{
|
724 |
|
|
struct ata_port *ap = link->ap;
|
725 |
|
|
struct sata_fsl_port_priv *pp = ap->private_data;
|
726 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
727 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
728 |
|
|
u32 temp;
|
729 |
|
|
struct ata_taskfile tf;
|
730 |
|
|
u8 *cfis;
|
731 |
|
|
u32 Serror;
|
732 |
|
|
int i = 0;
|
733 |
|
|
unsigned long start_jiffies;
|
734 |
|
|
|
735 |
|
|
DPRINTK("in xx_softreset\n");
|
736 |
|
|
|
737 |
|
|
try_offline_again:
|
738 |
|
|
/*
|
739 |
|
|
* Force host controller to go off-line, aborting current operations
|
740 |
|
|
*/
|
741 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
742 |
|
|
temp &= ~HCONTROL_ONLINE_PHY_RST;
|
743 |
|
|
iowrite32(temp, hcr_base + HCONTROL);
|
744 |
|
|
|
745 |
|
|
/* Poll for controller to go offline */
|
746 |
|
|
temp = ata_wait_register(hcr_base + HSTATUS, ONLINE, ONLINE, 1, 500);
|
747 |
|
|
|
748 |
|
|
if (temp & ONLINE) {
|
749 |
|
|
ata_port_printk(ap, KERN_ERR,
|
750 |
|
|
"Softreset failed, not off-lined %d\n", i);
|
751 |
|
|
|
752 |
|
|
/*
|
753 |
|
|
* Try to offline controller atleast twice
|
754 |
|
|
*/
|
755 |
|
|
i++;
|
756 |
|
|
if (i == 2)
|
757 |
|
|
goto err;
|
758 |
|
|
else
|
759 |
|
|
goto try_offline_again;
|
760 |
|
|
}
|
761 |
|
|
|
762 |
|
|
DPRINTK("softreset, controller off-lined\n");
|
763 |
|
|
VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
764 |
|
|
VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
765 |
|
|
|
766 |
|
|
/*
|
767 |
|
|
* PHY reset should remain asserted for atleast 1ms
|
768 |
|
|
*/
|
769 |
|
|
msleep(1);
|
770 |
|
|
|
771 |
|
|
/*
|
772 |
|
|
* Now, bring the host controller online again, this can take time
|
773 |
|
|
* as PHY reset and communication establishment, 1st D2H FIS and
|
774 |
|
|
* device signature update is done, on safe side assume 500ms
|
775 |
|
|
* NOTE : Host online status may be indicated immediately!!
|
776 |
|
|
*/
|
777 |
|
|
|
778 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
779 |
|
|
temp |= (HCONTROL_ONLINE_PHY_RST | HCONTROL_SNOOP_ENABLE);
|
780 |
|
|
iowrite32(temp, hcr_base + HCONTROL);
|
781 |
|
|
|
782 |
|
|
temp = ata_wait_register(hcr_base + HSTATUS, ONLINE, 0, 1, 500);
|
783 |
|
|
|
784 |
|
|
if (!(temp & ONLINE)) {
|
785 |
|
|
ata_port_printk(ap, KERN_ERR,
|
786 |
|
|
"Softreset failed, not on-lined\n");
|
787 |
|
|
goto err;
|
788 |
|
|
}
|
789 |
|
|
|
790 |
|
|
DPRINTK("softreset, controller off-lined & on-lined\n");
|
791 |
|
|
VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
792 |
|
|
VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
793 |
|
|
|
794 |
|
|
/*
|
795 |
|
|
* First, wait for the PHYRDY change to occur before waiting for
|
796 |
|
|
* the signature, and also verify if SStatus indicates device
|
797 |
|
|
* presence
|
798 |
|
|
*/
|
799 |
|
|
|
800 |
|
|
temp = ata_wait_register(hcr_base + HSTATUS, 0xFF, 0, 1, 500);
|
801 |
|
|
if ((!(temp & 0x10)) || ata_link_offline(link)) {
|
802 |
|
|
ata_port_printk(ap, KERN_WARNING,
|
803 |
|
|
"No Device OR PHYRDY change,Hstatus = 0x%x\n",
|
804 |
|
|
ioread32(hcr_base + HSTATUS));
|
805 |
|
|
goto err;
|
806 |
|
|
}
|
807 |
|
|
|
808 |
|
|
/*
|
809 |
|
|
* Wait for the first D2H from device,i.e,signature update notification
|
810 |
|
|
*/
|
811 |
|
|
start_jiffies = jiffies;
|
812 |
|
|
temp = ata_wait_register(hcr_base + HSTATUS, 0xFF, 0x10,
|
813 |
|
|
500, jiffies_to_msecs(deadline - start_jiffies));
|
814 |
|
|
|
815 |
|
|
if ((temp & 0xFF) != 0x18) {
|
816 |
|
|
ata_port_printk(ap, KERN_WARNING, "No Signature Update\n");
|
817 |
|
|
goto err;
|
818 |
|
|
} else {
|
819 |
|
|
ata_port_printk(ap, KERN_INFO,
|
820 |
|
|
"Signature Update detected @ %d msecs\n",
|
821 |
|
|
jiffies_to_msecs(jiffies - start_jiffies));
|
822 |
|
|
}
|
823 |
|
|
|
824 |
|
|
/*
|
825 |
|
|
* Send a device reset (SRST) explicitly on command slot #0
|
826 |
|
|
* Check : will the command queue (reg) be cleared during offlining ??
|
827 |
|
|
* Also we will be online only if Phy commn. has been established
|
828 |
|
|
* and device presence has been detected, therefore if we have
|
829 |
|
|
* reached here, we can send a command to the target device
|
830 |
|
|
*/
|
831 |
|
|
|
832 |
|
|
DPRINTK("Sending SRST/device reset\n");
|
833 |
|
|
|
834 |
|
|
ata_tf_init(link->device, &tf);
|
835 |
|
|
cfis = (u8 *) &pp->cmdentry->cfis;
|
836 |
|
|
|
837 |
|
|
/* device reset/SRST is a control register update FIS, uses tag0 */
|
838 |
|
|
sata_fsl_setup_cmd_hdr_entry(pp, 0,
|
839 |
|
|
SRST_CMD | CMD_DESC_SNOOP_ENABLE, 0, 0, 5);
|
840 |
|
|
|
841 |
|
|
tf.ctl |= ATA_SRST; /* setup SRST bit in taskfile control reg */
|
842 |
|
|
ata_tf_to_fis(&tf, 0, 0, cfis);
|
843 |
|
|
|
844 |
|
|
DPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x, 0x%x\n",
|
845 |
|
|
cfis[0], cfis[1], cfis[2], cfis[3]);
|
846 |
|
|
|
847 |
|
|
/*
|
848 |
|
|
* Queue SRST command to the controller/device, ensure that no
|
849 |
|
|
* other commands are active on the controller/device
|
850 |
|
|
*/
|
851 |
|
|
|
852 |
|
|
DPRINTK("@Softreset, CQ = 0x%x, CA = 0x%x, CC = 0x%x\n",
|
853 |
|
|
ioread32(CQ + hcr_base),
|
854 |
|
|
ioread32(CA + hcr_base), ioread32(CC + hcr_base));
|
855 |
|
|
|
856 |
|
|
iowrite32(0xFFFF, CC + hcr_base);
|
857 |
|
|
iowrite32(1, CQ + hcr_base);
|
858 |
|
|
|
859 |
|
|
temp = ata_wait_register(CQ + hcr_base, 0x1, 0x1, 1, 5000);
|
860 |
|
|
if (temp & 0x1) {
|
861 |
|
|
ata_port_printk(ap, KERN_WARNING, "ATA_SRST issue failed\n");
|
862 |
|
|
|
863 |
|
|
DPRINTK("Softreset@5000,CQ=0x%x,CA=0x%x,CC=0x%x\n",
|
864 |
|
|
ioread32(CQ + hcr_base),
|
865 |
|
|
ioread32(CA + hcr_base), ioread32(CC + hcr_base));
|
866 |
|
|
|
867 |
|
|
sata_fsl_scr_read(ap, SCR_ERROR, &Serror);
|
868 |
|
|
|
869 |
|
|
DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
870 |
|
|
DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
871 |
|
|
DPRINTK("Serror = 0x%x\n", Serror);
|
872 |
|
|
goto err;
|
873 |
|
|
}
|
874 |
|
|
|
875 |
|
|
msleep(1);
|
876 |
|
|
|
877 |
|
|
/*
|
878 |
|
|
* SATA device enters reset state after receving a Control register
|
879 |
|
|
* FIS with SRST bit asserted and it awaits another H2D Control reg.
|
880 |
|
|
* FIS with SRST bit cleared, then the device does internal diags &
|
881 |
|
|
* initialization, followed by indicating it's initialization status
|
882 |
|
|
* using ATA signature D2H register FIS to the host controller.
|
883 |
|
|
*/
|
884 |
|
|
|
885 |
|
|
sata_fsl_setup_cmd_hdr_entry(pp, 0, CMD_DESC_SNOOP_ENABLE, 0, 0, 5);
|
886 |
|
|
|
887 |
|
|
tf.ctl &= ~ATA_SRST; /* 2nd H2D Ctl. register FIS */
|
888 |
|
|
ata_tf_to_fis(&tf, 0, 0, cfis);
|
889 |
|
|
|
890 |
|
|
iowrite32(1, CQ + hcr_base);
|
891 |
|
|
msleep(150); /* ?? */
|
892 |
|
|
|
893 |
|
|
/*
|
894 |
|
|
* The above command would have signalled an interrupt on command
|
895 |
|
|
* complete, which needs special handling, by clearing the Nth
|
896 |
|
|
* command bit of the CCreg
|
897 |
|
|
*/
|
898 |
|
|
iowrite32(0x01, CC + hcr_base); /* We know it will be cmd#0 always */
|
899 |
|
|
|
900 |
|
|
DPRINTK("SATA FSL : Now checking device signature\n");
|
901 |
|
|
|
902 |
|
|
*class = ATA_DEV_NONE;
|
903 |
|
|
|
904 |
|
|
/* Verify if SStatus indicates device presence */
|
905 |
|
|
if (ata_link_online(link)) {
|
906 |
|
|
/*
|
907 |
|
|
* if we are here, device presence has been detected,
|
908 |
|
|
* 1st D2H FIS would have been received, but sfis in
|
909 |
|
|
* command desc. is not updated, but signature register
|
910 |
|
|
* would have been updated
|
911 |
|
|
*/
|
912 |
|
|
|
913 |
|
|
*class = sata_fsl_dev_classify(ap);
|
914 |
|
|
|
915 |
|
|
DPRINTK("class = %d\n", *class);
|
916 |
|
|
VPRINTK("ccreg = 0x%x\n", ioread32(hcr_base + CC));
|
917 |
|
|
VPRINTK("cereg = 0x%x\n", ioread32(hcr_base + CE));
|
918 |
|
|
}
|
919 |
|
|
|
920 |
|
|
return 0;
|
921 |
|
|
|
922 |
|
|
err:
|
923 |
|
|
return -EIO;
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
static void sata_fsl_error_handler(struct ata_port *ap)
|
927 |
|
|
{
|
928 |
|
|
|
929 |
|
|
DPRINTK("in xx_error_handler\n");
|
930 |
|
|
|
931 |
|
|
/* perform recovery */
|
932 |
|
|
ata_do_eh(ap, ata_std_prereset, sata_fsl_softreset, sata_std_hardreset,
|
933 |
|
|
ata_std_postreset);
|
934 |
|
|
}
|
935 |
|
|
|
936 |
|
|
static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc)
|
937 |
|
|
{
|
938 |
|
|
if (qc->flags & ATA_QCFLAG_FAILED)
|
939 |
|
|
qc->err_mask |= AC_ERR_OTHER;
|
940 |
|
|
|
941 |
|
|
if (qc->err_mask) {
|
942 |
|
|
/* make DMA engine forget about the failed command */
|
943 |
|
|
|
944 |
|
|
}
|
945 |
|
|
}
|
946 |
|
|
|
947 |
|
|
static void sata_fsl_irq_clear(struct ata_port *ap)
|
948 |
|
|
{
|
949 |
|
|
/* unused */
|
950 |
|
|
}
|
951 |
|
|
|
952 |
|
|
static void sata_fsl_error_intr(struct ata_port *ap)
|
953 |
|
|
{
|
954 |
|
|
struct ata_link *link = &ap->link;
|
955 |
|
|
struct ata_eh_info *ehi = &link->eh_info;
|
956 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
957 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
958 |
|
|
u32 hstatus, dereg, cereg = 0, SError = 0;
|
959 |
|
|
unsigned int err_mask = 0, action = 0;
|
960 |
|
|
struct ata_queued_cmd *qc;
|
961 |
|
|
int freeze = 0;
|
962 |
|
|
|
963 |
|
|
hstatus = ioread32(hcr_base + HSTATUS);
|
964 |
|
|
cereg = ioread32(hcr_base + CE);
|
965 |
|
|
|
966 |
|
|
ata_ehi_clear_desc(ehi);
|
967 |
|
|
|
968 |
|
|
/*
|
969 |
|
|
* Handle & Clear SError
|
970 |
|
|
*/
|
971 |
|
|
|
972 |
|
|
sata_fsl_scr_read(ap, SCR_ERROR, &SError);
|
973 |
|
|
if (unlikely(SError & 0xFFFF0000)) {
|
974 |
|
|
sata_fsl_scr_write(ap, SCR_ERROR, SError);
|
975 |
|
|
err_mask |= AC_ERR_ATA_BUS;
|
976 |
|
|
}
|
977 |
|
|
|
978 |
|
|
DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n",
|
979 |
|
|
hstatus, cereg, ioread32(hcr_base + DE), SError);
|
980 |
|
|
|
981 |
|
|
/* handle single device errors */
|
982 |
|
|
if (cereg) {
|
983 |
|
|
/*
|
984 |
|
|
* clear the command error, also clears queue to the device
|
985 |
|
|
* in error, and we can (re)issue commands to this device.
|
986 |
|
|
* When a device is in error all commands queued into the
|
987 |
|
|
* host controller and at the device are considered aborted
|
988 |
|
|
* and the queue for that device is stopped. Now, after
|
989 |
|
|
* clearing the device error, we can issue commands to the
|
990 |
|
|
* device to interrogate it to find the source of the error.
|
991 |
|
|
*/
|
992 |
|
|
dereg = ioread32(hcr_base + DE);
|
993 |
|
|
iowrite32(dereg, hcr_base + DE);
|
994 |
|
|
iowrite32(cereg, hcr_base + CE);
|
995 |
|
|
|
996 |
|
|
DPRINTK("single device error, CE=0x%x, DE=0x%x\n",
|
997 |
|
|
ioread32(hcr_base + CE), ioread32(hcr_base + DE));
|
998 |
|
|
/*
|
999 |
|
|
* We should consider this as non fatal error, and TF must
|
1000 |
|
|
* be updated as done below.
|
1001 |
|
|
*/
|
1002 |
|
|
|
1003 |
|
|
err_mask |= AC_ERR_DEV;
|
1004 |
|
|
}
|
1005 |
|
|
|
1006 |
|
|
/* handle fatal errors */
|
1007 |
|
|
if (hstatus & FATAL_ERROR_DECODE) {
|
1008 |
|
|
err_mask |= AC_ERR_ATA_BUS;
|
1009 |
|
|
action |= ATA_EH_SOFTRESET;
|
1010 |
|
|
/* how will fatal error interrupts be completed ?? */
|
1011 |
|
|
freeze = 1;
|
1012 |
|
|
}
|
1013 |
|
|
|
1014 |
|
|
/* Handle PHYRDY change notification */
|
1015 |
|
|
if (hstatus & INT_ON_PHYRDY_CHG) {
|
1016 |
|
|
DPRINTK("SATA FSL: PHYRDY change indication\n");
|
1017 |
|
|
|
1018 |
|
|
/* Setup a soft-reset EH action */
|
1019 |
|
|
ata_ehi_hotplugged(ehi);
|
1020 |
|
|
freeze = 1;
|
1021 |
|
|
}
|
1022 |
|
|
|
1023 |
|
|
/* record error info */
|
1024 |
|
|
qc = ata_qc_from_tag(ap, link->active_tag);
|
1025 |
|
|
|
1026 |
|
|
if (qc) {
|
1027 |
|
|
sata_fsl_cache_taskfile_from_d2h_fis(qc, qc->ap);
|
1028 |
|
|
qc->err_mask |= err_mask;
|
1029 |
|
|
} else
|
1030 |
|
|
ehi->err_mask |= err_mask;
|
1031 |
|
|
|
1032 |
|
|
ehi->action |= action;
|
1033 |
|
|
ehi->serror |= SError;
|
1034 |
|
|
|
1035 |
|
|
/* freeze or abort */
|
1036 |
|
|
if (freeze)
|
1037 |
|
|
ata_port_freeze(ap);
|
1038 |
|
|
else
|
1039 |
|
|
ata_port_abort(ap);
|
1040 |
|
|
}
|
1041 |
|
|
|
1042 |
|
|
static void sata_fsl_qc_complete(struct ata_queued_cmd *qc)
|
1043 |
|
|
{
|
1044 |
|
|
if (qc->flags & ATA_QCFLAG_RESULT_TF) {
|
1045 |
|
|
DPRINTK("xx_qc_complete called\n");
|
1046 |
|
|
sata_fsl_cache_taskfile_from_d2h_fis(qc, qc->ap);
|
1047 |
|
|
}
|
1048 |
|
|
}
|
1049 |
|
|
|
1050 |
|
|
static void sata_fsl_host_intr(struct ata_port *ap)
|
1051 |
|
|
{
|
1052 |
|
|
struct ata_link *link = &ap->link;
|
1053 |
|
|
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
|
1054 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
1055 |
|
|
u32 hstatus, qc_active = 0;
|
1056 |
|
|
struct ata_queued_cmd *qc;
|
1057 |
|
|
u32 SError;
|
1058 |
|
|
|
1059 |
|
|
hstatus = ioread32(hcr_base + HSTATUS);
|
1060 |
|
|
|
1061 |
|
|
sata_fsl_scr_read(ap, SCR_ERROR, &SError);
|
1062 |
|
|
|
1063 |
|
|
if (unlikely(SError & 0xFFFF0000)) {
|
1064 |
|
|
DPRINTK("serror @host_intr : 0x%x\n", SError);
|
1065 |
|
|
sata_fsl_error_intr(ap);
|
1066 |
|
|
|
1067 |
|
|
}
|
1068 |
|
|
|
1069 |
|
|
if (unlikely(hstatus & INT_ON_ERROR)) {
|
1070 |
|
|
DPRINTK("error interrupt!!\n");
|
1071 |
|
|
sata_fsl_error_intr(ap);
|
1072 |
|
|
return;
|
1073 |
|
|
}
|
1074 |
|
|
|
1075 |
|
|
if (link->sactive) { /* only true for NCQ commands */
|
1076 |
|
|
int i;
|
1077 |
|
|
/* Read command completed register */
|
1078 |
|
|
qc_active = ioread32(hcr_base + CC);
|
1079 |
|
|
/* clear CC bit, this will also complete the interrupt */
|
1080 |
|
|
iowrite32(qc_active, hcr_base + CC);
|
1081 |
|
|
|
1082 |
|
|
DPRINTK("Status of all queues :\n");
|
1083 |
|
|
DPRINTK("qc_active/CC = 0x%x, CA = 0x%x, CE=0x%x\n",
|
1084 |
|
|
qc_active, ioread32(hcr_base + CA),
|
1085 |
|
|
ioread32(hcr_base + CE));
|
1086 |
|
|
|
1087 |
|
|
for (i = 0; i < SATA_FSL_QUEUE_DEPTH; i++) {
|
1088 |
|
|
if (qc_active & (1 << i)) {
|
1089 |
|
|
qc = ata_qc_from_tag(ap, i);
|
1090 |
|
|
if (qc) {
|
1091 |
|
|
sata_fsl_qc_complete(qc);
|
1092 |
|
|
ata_qc_complete(qc);
|
1093 |
|
|
}
|
1094 |
|
|
DPRINTK
|
1095 |
|
|
("completing ncq cmd,tag=%d,CC=0x%x,CA=0x%x\n",
|
1096 |
|
|
i, ioread32(hcr_base + CC),
|
1097 |
|
|
ioread32(hcr_base + CA));
|
1098 |
|
|
}
|
1099 |
|
|
}
|
1100 |
|
|
return;
|
1101 |
|
|
|
1102 |
|
|
} else if (ap->qc_active) {
|
1103 |
|
|
iowrite32(1, hcr_base + CC);
|
1104 |
|
|
qc = ata_qc_from_tag(ap, link->active_tag);
|
1105 |
|
|
|
1106 |
|
|
DPRINTK("completing non-ncq cmd, tag=%d,CC=0x%x\n",
|
1107 |
|
|
link->active_tag, ioread32(hcr_base + CC));
|
1108 |
|
|
|
1109 |
|
|
if (qc) {
|
1110 |
|
|
sata_fsl_qc_complete(qc);
|
1111 |
|
|
ata_qc_complete(qc);
|
1112 |
|
|
}
|
1113 |
|
|
} else {
|
1114 |
|
|
/* Spurious Interrupt!! */
|
1115 |
|
|
DPRINTK("spurious interrupt!!, CC = 0x%x\n",
|
1116 |
|
|
ioread32(hcr_base + CC));
|
1117 |
|
|
return;
|
1118 |
|
|
}
|
1119 |
|
|
}
|
1120 |
|
|
|
1121 |
|
|
static irqreturn_t sata_fsl_interrupt(int irq, void *dev_instance)
|
1122 |
|
|
{
|
1123 |
|
|
struct ata_host *host = dev_instance;
|
1124 |
|
|
struct sata_fsl_host_priv *host_priv = host->private_data;
|
1125 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
1126 |
|
|
u32 interrupt_enables;
|
1127 |
|
|
unsigned handled = 0;
|
1128 |
|
|
struct ata_port *ap;
|
1129 |
|
|
|
1130 |
|
|
/* ack. any pending IRQs for this controller/port */
|
1131 |
|
|
interrupt_enables = ioread32(hcr_base + HSTATUS);
|
1132 |
|
|
interrupt_enables &= 0x3F;
|
1133 |
|
|
|
1134 |
|
|
DPRINTK("interrupt status 0x%x\n", interrupt_enables);
|
1135 |
|
|
|
1136 |
|
|
if (!interrupt_enables)
|
1137 |
|
|
return IRQ_NONE;
|
1138 |
|
|
|
1139 |
|
|
spin_lock(&host->lock);
|
1140 |
|
|
|
1141 |
|
|
/* Assuming one port per host controller */
|
1142 |
|
|
|
1143 |
|
|
ap = host->ports[0];
|
1144 |
|
|
if (ap) {
|
1145 |
|
|
sata_fsl_host_intr(ap);
|
1146 |
|
|
} else {
|
1147 |
|
|
dev_printk(KERN_WARNING, host->dev,
|
1148 |
|
|
"interrupt on disabled port 0\n");
|
1149 |
|
|
}
|
1150 |
|
|
|
1151 |
|
|
iowrite32(interrupt_enables, hcr_base + HSTATUS);
|
1152 |
|
|
handled = 1;
|
1153 |
|
|
|
1154 |
|
|
spin_unlock(&host->lock);
|
1155 |
|
|
|
1156 |
|
|
return IRQ_RETVAL(handled);
|
1157 |
|
|
}
|
1158 |
|
|
|
1159 |
|
|
/*
|
1160 |
|
|
* Multiple ports are represented by multiple SATA controllers with
|
1161 |
|
|
* one port per controller
|
1162 |
|
|
*/
|
1163 |
|
|
static int sata_fsl_init_controller(struct ata_host *host)
|
1164 |
|
|
{
|
1165 |
|
|
struct sata_fsl_host_priv *host_priv = host->private_data;
|
1166 |
|
|
void __iomem *hcr_base = host_priv->hcr_base;
|
1167 |
|
|
u32 temp;
|
1168 |
|
|
|
1169 |
|
|
/*
|
1170 |
|
|
* NOTE : We cannot bring the controller online before setting
|
1171 |
|
|
* the CHBA, hence main controller initialization is done as
|
1172 |
|
|
* part of the port_start() callback
|
1173 |
|
|
*/
|
1174 |
|
|
|
1175 |
|
|
/* ack. any pending IRQs for this controller/port */
|
1176 |
|
|
temp = ioread32(hcr_base + HSTATUS);
|
1177 |
|
|
if (temp & 0x3F)
|
1178 |
|
|
iowrite32((temp & 0x3F), hcr_base + HSTATUS);
|
1179 |
|
|
|
1180 |
|
|
/* Keep interrupts disabled on the controller */
|
1181 |
|
|
temp = ioread32(hcr_base + HCONTROL);
|
1182 |
|
|
iowrite32((temp & ~0x3F), hcr_base + HCONTROL);
|
1183 |
|
|
|
1184 |
|
|
/* Disable interrupt coalescing control(icc), for the moment */
|
1185 |
|
|
DPRINTK("icc = 0x%x\n", ioread32(hcr_base + ICC));
|
1186 |
|
|
iowrite32(0x01000000, hcr_base + ICC);
|
1187 |
|
|
|
1188 |
|
|
/* clear error registers, SError is cleared by libATA */
|
1189 |
|
|
iowrite32(0x00000FFFF, hcr_base + CE);
|
1190 |
|
|
iowrite32(0x00000FFFF, hcr_base + DE);
|
1191 |
|
|
|
1192 |
|
|
/* initially assuming no Port multiplier, set CQPMP to 0 */
|
1193 |
|
|
iowrite32(0x0, hcr_base + CQPMP);
|
1194 |
|
|
|
1195 |
|
|
/*
|
1196 |
|
|
* host controller will be brought on-line, during xx_port_start()
|
1197 |
|
|
* callback, that should also initiate the OOB, COMINIT sequence
|
1198 |
|
|
*/
|
1199 |
|
|
|
1200 |
|
|
DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
|
1201 |
|
|
DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
|
1202 |
|
|
|
1203 |
|
|
return 0;
|
1204 |
|
|
}
|
1205 |
|
|
|
1206 |
|
|
/*
|
1207 |
|
|
* scsi mid-layer and libata interface structures
|
1208 |
|
|
*/
|
1209 |
|
|
static struct scsi_host_template sata_fsl_sht = {
|
1210 |
|
|
.module = THIS_MODULE,
|
1211 |
|
|
.name = "sata_fsl",
|
1212 |
|
|
.ioctl = ata_scsi_ioctl,
|
1213 |
|
|
.queuecommand = ata_scsi_queuecmd,
|
1214 |
|
|
.change_queue_depth = ata_scsi_change_queue_depth,
|
1215 |
|
|
.can_queue = SATA_FSL_QUEUE_DEPTH,
|
1216 |
|
|
.this_id = ATA_SHT_THIS_ID,
|
1217 |
|
|
.sg_tablesize = SATA_FSL_MAX_PRD_USABLE,
|
1218 |
|
|
.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
|
1219 |
|
|
.emulated = ATA_SHT_EMULATED,
|
1220 |
|
|
.use_clustering = ATA_SHT_USE_CLUSTERING,
|
1221 |
|
|
.proc_name = "sata_fsl",
|
1222 |
|
|
.dma_boundary = ATA_DMA_BOUNDARY,
|
1223 |
|
|
.slave_configure = ata_scsi_slave_config,
|
1224 |
|
|
.slave_destroy = ata_scsi_slave_destroy,
|
1225 |
|
|
.bios_param = ata_std_bios_param,
|
1226 |
|
|
};
|
1227 |
|
|
|
1228 |
|
|
static const struct ata_port_operations sata_fsl_ops = {
|
1229 |
|
|
.check_status = sata_fsl_check_status,
|
1230 |
|
|
.check_altstatus = sata_fsl_check_status,
|
1231 |
|
|
.dev_select = ata_noop_dev_select,
|
1232 |
|
|
|
1233 |
|
|
.tf_read = sata_fsl_tf_read,
|
1234 |
|
|
|
1235 |
|
|
.qc_prep = sata_fsl_qc_prep,
|
1236 |
|
|
.qc_issue = sata_fsl_qc_issue,
|
1237 |
|
|
.irq_clear = sata_fsl_irq_clear,
|
1238 |
|
|
|
1239 |
|
|
.scr_read = sata_fsl_scr_read,
|
1240 |
|
|
.scr_write = sata_fsl_scr_write,
|
1241 |
|
|
|
1242 |
|
|
.freeze = sata_fsl_freeze,
|
1243 |
|
|
.thaw = sata_fsl_thaw,
|
1244 |
|
|
.error_handler = sata_fsl_error_handler,
|
1245 |
|
|
.post_internal_cmd = sata_fsl_post_internal_cmd,
|
1246 |
|
|
|
1247 |
|
|
.port_start = sata_fsl_port_start,
|
1248 |
|
|
.port_stop = sata_fsl_port_stop,
|
1249 |
|
|
};
|
1250 |
|
|
|
1251 |
|
|
static const struct ata_port_info sata_fsl_port_info[] = {
|
1252 |
|
|
{
|
1253 |
|
|
.flags = SATA_FSL_HOST_FLAGS,
|
1254 |
|
|
.link_flags = SATA_FSL_HOST_LFLAGS,
|
1255 |
|
|
.pio_mask = 0x1f, /* pio 0-4 */
|
1256 |
|
|
.udma_mask = 0x7f, /* udma 0-6 */
|
1257 |
|
|
.port_ops = &sata_fsl_ops,
|
1258 |
|
|
},
|
1259 |
|
|
};
|
1260 |
|
|
|
1261 |
|
|
static int sata_fsl_probe(struct of_device *ofdev,
|
1262 |
|
|
const struct of_device_id *match)
|
1263 |
|
|
{
|
1264 |
|
|
int retval = 0;
|
1265 |
|
|
void __iomem *hcr_base = NULL;
|
1266 |
|
|
void __iomem *ssr_base = NULL;
|
1267 |
|
|
void __iomem *csr_base = NULL;
|
1268 |
|
|
struct sata_fsl_host_priv *host_priv = NULL;
|
1269 |
|
|
struct resource *r;
|
1270 |
|
|
int irq;
|
1271 |
|
|
struct ata_host *host;
|
1272 |
|
|
|
1273 |
|
|
struct ata_port_info pi = sata_fsl_port_info[0];
|
1274 |
|
|
const struct ata_port_info *ppi[] = { &pi, NULL };
|
1275 |
|
|
|
1276 |
|
|
dev_printk(KERN_INFO, &ofdev->dev,
|
1277 |
|
|
"Sata FSL Platform/CSB Driver init\n");
|
1278 |
|
|
|
1279 |
|
|
r = kmalloc(sizeof(struct resource), GFP_KERNEL);
|
1280 |
|
|
|
1281 |
|
|
hcr_base = of_iomap(ofdev->node, 0);
|
1282 |
|
|
if (!hcr_base)
|
1283 |
|
|
goto error_exit_with_cleanup;
|
1284 |
|
|
|
1285 |
|
|
ssr_base = hcr_base + 0x100;
|
1286 |
|
|
csr_base = hcr_base + 0x140;
|
1287 |
|
|
|
1288 |
|
|
DPRINTK("@reset i/o = 0x%x\n", ioread32(csr_base + TRANSCFG));
|
1289 |
|
|
DPRINTK("sizeof(cmd_desc) = %d\n", sizeof(struct command_desc));
|
1290 |
|
|
DPRINTK("sizeof(#define cmd_desc) = %d\n", SATA_FSL_CMD_DESC_SIZE);
|
1291 |
|
|
|
1292 |
|
|
host_priv = kzalloc(sizeof(struct sata_fsl_host_priv), GFP_KERNEL);
|
1293 |
|
|
if (!host_priv)
|
1294 |
|
|
goto error_exit_with_cleanup;
|
1295 |
|
|
|
1296 |
|
|
host_priv->hcr_base = hcr_base;
|
1297 |
|
|
host_priv->ssr_base = ssr_base;
|
1298 |
|
|
host_priv->csr_base = csr_base;
|
1299 |
|
|
|
1300 |
|
|
irq = irq_of_parse_and_map(ofdev->node, 0);
|
1301 |
|
|
if (irq < 0) {
|
1302 |
|
|
dev_printk(KERN_ERR, &ofdev->dev, "invalid irq from platform\n");
|
1303 |
|
|
goto error_exit_with_cleanup;
|
1304 |
|
|
}
|
1305 |
|
|
host_priv->irq = irq;
|
1306 |
|
|
|
1307 |
|
|
/* allocate host structure */
|
1308 |
|
|
host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_FSL_MAX_PORTS);
|
1309 |
|
|
|
1310 |
|
|
/* host->iomap is not used currently */
|
1311 |
|
|
host->private_data = host_priv;
|
1312 |
|
|
|
1313 |
|
|
/* setup port(s) */
|
1314 |
|
|
|
1315 |
|
|
host->ports[0]->ioaddr.cmd_addr = host_priv->hcr_base;
|
1316 |
|
|
host->ports[0]->ioaddr.scr_addr = host_priv->ssr_base;
|
1317 |
|
|
|
1318 |
|
|
/* initialize host controller */
|
1319 |
|
|
sata_fsl_init_controller(host);
|
1320 |
|
|
|
1321 |
|
|
/*
|
1322 |
|
|
* Now, register with libATA core, this will also initiate the
|
1323 |
|
|
* device discovery process, invoking our port_start() handler &
|
1324 |
|
|
* error_handler() to execute a dummy Softreset EH session
|
1325 |
|
|
*/
|
1326 |
|
|
ata_host_activate(host, irq, sata_fsl_interrupt, SATA_FSL_IRQ_FLAG,
|
1327 |
|
|
&sata_fsl_sht);
|
1328 |
|
|
|
1329 |
|
|
dev_set_drvdata(&ofdev->dev, host);
|
1330 |
|
|
|
1331 |
|
|
return 0;
|
1332 |
|
|
|
1333 |
|
|
error_exit_with_cleanup:
|
1334 |
|
|
|
1335 |
|
|
if (hcr_base)
|
1336 |
|
|
iounmap(hcr_base);
|
1337 |
|
|
if (host_priv)
|
1338 |
|
|
kfree(host_priv);
|
1339 |
|
|
|
1340 |
|
|
return retval;
|
1341 |
|
|
}
|
1342 |
|
|
|
1343 |
|
|
static int sata_fsl_remove(struct of_device *ofdev)
|
1344 |
|
|
{
|
1345 |
|
|
struct ata_host *host = dev_get_drvdata(&ofdev->dev);
|
1346 |
|
|
struct sata_fsl_host_priv *host_priv = host->private_data;
|
1347 |
|
|
|
1348 |
|
|
ata_host_detach(host);
|
1349 |
|
|
|
1350 |
|
|
dev_set_drvdata(&ofdev->dev, NULL);
|
1351 |
|
|
|
1352 |
|
|
irq_dispose_mapping(host_priv->irq);
|
1353 |
|
|
iounmap(host_priv->hcr_base);
|
1354 |
|
|
kfree(host_priv);
|
1355 |
|
|
|
1356 |
|
|
return 0;
|
1357 |
|
|
}
|
1358 |
|
|
|
1359 |
|
|
static struct of_device_id fsl_sata_match[] = {
|
1360 |
|
|
{
|
1361 |
|
|
.compatible = "fsl,mpc8315-sata",
|
1362 |
|
|
},
|
1363 |
|
|
{
|
1364 |
|
|
.compatible = "fsl,mpc8379-sata",
|
1365 |
|
|
},
|
1366 |
|
|
{},
|
1367 |
|
|
};
|
1368 |
|
|
|
1369 |
|
|
MODULE_DEVICE_TABLE(of, fsl_sata_match);
|
1370 |
|
|
|
1371 |
|
|
static struct of_platform_driver fsl_sata_driver = {
|
1372 |
|
|
.name = "fsl-sata",
|
1373 |
|
|
.match_table = fsl_sata_match,
|
1374 |
|
|
.probe = sata_fsl_probe,
|
1375 |
|
|
.remove = sata_fsl_remove,
|
1376 |
|
|
};
|
1377 |
|
|
|
1378 |
|
|
static int __init sata_fsl_init(void)
|
1379 |
|
|
{
|
1380 |
|
|
of_register_platform_driver(&fsl_sata_driver);
|
1381 |
|
|
return 0;
|
1382 |
|
|
}
|
1383 |
|
|
|
1384 |
|
|
static void __exit sata_fsl_exit(void)
|
1385 |
|
|
{
|
1386 |
|
|
of_unregister_platform_driver(&fsl_sata_driver);
|
1387 |
|
|
}
|
1388 |
|
|
|
1389 |
|
|
MODULE_LICENSE("GPL");
|
1390 |
|
|
MODULE_AUTHOR("Ashish Kalra, Freescale Semiconductor");
|
1391 |
|
|
MODULE_DESCRIPTION("Freescale 3.0Gbps SATA controller low level driver");
|
1392 |
|
|
MODULE_VERSION("1.10");
|
1393 |
|
|
|
1394 |
|
|
module_init(sata_fsl_init);
|
1395 |
|
|
module_exit(sata_fsl_exit);
|