mirror of
https://github.com/AsahiLinux/u-boot
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192bc6948b
With format-security errors turned on, GCC picks up the use of sprintf with a format parameter not being a string literal. Simple uses of sprintf are also converted to use strcpy. Signed-off-by: Ben Whitten <ben.whitten@gmail.com> Acked-by: Wolfgang Denk <wd@denx.de> Reviewed-by: Tom Rini <trini@konsulko.com>
2076 lines
46 KiB
C
2076 lines
46 KiB
C
/*
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* sata_dwc.c
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*
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* Synopsys DesignWare Cores (DWC) SATA host driver
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*
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* Author: Mark Miesfeld <mmiesfeld@amcc.com>
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*
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* Ported from 2.6.19.2 to 2.6.25/26 by Stefan Roese <sr@denx.de>
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* Copyright 2008 DENX Software Engineering
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*
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* Based on versions provided by AMCC and Synopsys which are:
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* Copyright 2006 Applied Micro Circuits Corporation
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* COPYRIGHT (C) 2005 SYNOPSYS, INC. ALL RIGHTS RESERVED
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* SATA support based on the chip canyonlands.
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*
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* 04-17-2009
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* The local version of this driver for the canyonlands board
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* does not use interrupts but polls the chip instead.
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*/
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#include <common.h>
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#include <command.h>
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#include <pci.h>
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#include <asm/processor.h>
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#include <asm/errno.h>
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#include <asm/io.h>
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#include <malloc.h>
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#include <ata.h>
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#include <sata.h>
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#include <linux/ctype.h>
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#include "sata_dwc.h"
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#define DMA_NUM_CHANS 1
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#define DMA_NUM_CHAN_REGS 8
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#define AHB_DMA_BRST_DFLT 16
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struct dmareg {
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u32 low;
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u32 high;
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};
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struct dma_chan_regs {
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struct dmareg sar;
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struct dmareg dar;
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struct dmareg llp;
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struct dmareg ctl;
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struct dmareg sstat;
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struct dmareg dstat;
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struct dmareg sstatar;
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struct dmareg dstatar;
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struct dmareg cfg;
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struct dmareg sgr;
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struct dmareg dsr;
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};
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struct dma_interrupt_regs {
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struct dmareg tfr;
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struct dmareg block;
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struct dmareg srctran;
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struct dmareg dsttran;
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struct dmareg error;
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};
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struct ahb_dma_regs {
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struct dma_chan_regs chan_regs[DMA_NUM_CHAN_REGS];
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struct dma_interrupt_regs interrupt_raw;
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struct dma_interrupt_regs interrupt_status;
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struct dma_interrupt_regs interrupt_mask;
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struct dma_interrupt_regs interrupt_clear;
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struct dmareg statusInt;
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struct dmareg rq_srcreg;
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struct dmareg rq_dstreg;
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struct dmareg rq_sgl_srcreg;
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struct dmareg rq_sgl_dstreg;
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struct dmareg rq_lst_srcreg;
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struct dmareg rq_lst_dstreg;
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struct dmareg dma_cfg;
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struct dmareg dma_chan_en;
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struct dmareg dma_id;
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struct dmareg dma_test;
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struct dmareg res1;
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struct dmareg res2;
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/* DMA Comp Params
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* Param 6 = dma_param[0], Param 5 = dma_param[1],
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* Param 4 = dma_param[2] ...
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*/
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struct dmareg dma_params[6];
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};
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#define DMA_EN 0x00000001
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#define DMA_DI 0x00000000
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#define DMA_CHANNEL(ch) (0x00000001 << (ch))
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#define DMA_ENABLE_CHAN(ch) ((0x00000001 << (ch)) | \
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((0x000000001 << (ch)) << 8))
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#define DMA_DISABLE_CHAN(ch) (0x00000000 | \
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((0x000000001 << (ch)) << 8))
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#define SATA_DWC_MAX_PORTS 1
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#define SATA_DWC_SCR_OFFSET 0x24
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#define SATA_DWC_REG_OFFSET 0x64
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struct sata_dwc_regs {
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u32 fptagr;
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u32 fpbor;
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u32 fptcr;
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u32 dmacr;
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u32 dbtsr;
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u32 intpr;
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u32 intmr;
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u32 errmr;
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u32 llcr;
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u32 phycr;
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u32 physr;
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u32 rxbistpd;
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u32 rxbistpd1;
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u32 rxbistpd2;
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u32 txbistpd;
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u32 txbistpd1;
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u32 txbistpd2;
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u32 bistcr;
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u32 bistfctr;
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u32 bistsr;
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u32 bistdecr;
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u32 res[15];
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u32 testr;
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u32 versionr;
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u32 idr;
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u32 unimpl[192];
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u32 dmadr[256];
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};
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#define SATA_DWC_TXFIFO_DEPTH 0x01FF
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#define SATA_DWC_RXFIFO_DEPTH 0x01FF
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#define SATA_DWC_DBTSR_MWR(size) ((size / 4) & SATA_DWC_TXFIFO_DEPTH)
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#define SATA_DWC_DBTSR_MRD(size) (((size / 4) & \
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SATA_DWC_RXFIFO_DEPTH) << 16)
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#define SATA_DWC_INTPR_DMAT 0x00000001
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#define SATA_DWC_INTPR_NEWFP 0x00000002
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#define SATA_DWC_INTPR_PMABRT 0x00000004
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#define SATA_DWC_INTPR_ERR 0x00000008
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#define SATA_DWC_INTPR_NEWBIST 0x00000010
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#define SATA_DWC_INTPR_IPF 0x10000000
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#define SATA_DWC_INTMR_DMATM 0x00000001
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#define SATA_DWC_INTMR_NEWFPM 0x00000002
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#define SATA_DWC_INTMR_PMABRTM 0x00000004
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#define SATA_DWC_INTMR_ERRM 0x00000008
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#define SATA_DWC_INTMR_NEWBISTM 0x00000010
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#define SATA_DWC_DMACR_TMOD_TXCHEN 0x00000004
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#define SATA_DWC_DMACR_TXRXCH_CLEAR SATA_DWC_DMACR_TMOD_TXCHEN
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#define SATA_DWC_QCMD_MAX 32
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#define SATA_DWC_SERROR_ERR_BITS 0x0FFF0F03
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#define HSDEVP_FROM_AP(ap) (struct sata_dwc_device_port*) \
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(ap)->private_data
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struct sata_dwc_device {
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struct device *dev;
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struct ata_probe_ent *pe;
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struct ata_host *host;
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u8 *reg_base;
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struct sata_dwc_regs *sata_dwc_regs;
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int irq_dma;
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};
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struct sata_dwc_device_port {
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struct sata_dwc_device *hsdev;
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int cmd_issued[SATA_DWC_QCMD_MAX];
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u32 dma_chan[SATA_DWC_QCMD_MAX];
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int dma_pending[SATA_DWC_QCMD_MAX];
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};
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enum {
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SATA_DWC_CMD_ISSUED_NOT = 0,
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SATA_DWC_CMD_ISSUED_PEND = 1,
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SATA_DWC_CMD_ISSUED_EXEC = 2,
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SATA_DWC_CMD_ISSUED_NODATA = 3,
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SATA_DWC_DMA_PENDING_NONE = 0,
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SATA_DWC_DMA_PENDING_TX = 1,
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SATA_DWC_DMA_PENDING_RX = 2,
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};
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#define msleep(a) udelay(a * 1000)
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#define ssleep(a) msleep(a * 1000)
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static int ata_probe_timeout = (ATA_TMOUT_INTERNAL / 100);
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enum sata_dev_state {
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SATA_INIT = 0,
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SATA_READY = 1,
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SATA_NODEVICE = 2,
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SATA_ERROR = 3,
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};
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enum sata_dev_state dev_state = SATA_INIT;
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static struct ahb_dma_regs *sata_dma_regs = 0;
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static struct ata_host *phost;
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static struct ata_port ap;
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static struct ata_port *pap = ≈
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static struct ata_device ata_device;
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static struct sata_dwc_device_port dwc_devp;
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static void *scr_addr_sstatus;
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static u32 temp_n_block = 0;
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static unsigned ata_exec_internal(struct ata_device *dev,
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struct ata_taskfile *tf, const u8 *cdb,
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int dma_dir, unsigned int buflen,
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unsigned long timeout);
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static unsigned int ata_dev_set_feature(struct ata_device *dev,
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u8 enable,u8 feature);
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static unsigned int ata_dev_init_params(struct ata_device *dev,
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u16 heads, u16 sectors);
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static u8 ata_irq_on(struct ata_port *ap);
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static struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
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unsigned int tag);
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static int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
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u8 status, int in_wq);
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static void ata_tf_to_host(struct ata_port *ap,
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const struct ata_taskfile *tf);
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static void ata_exec_command(struct ata_port *ap,
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const struct ata_taskfile *tf);
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static unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
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static u8 ata_check_altstatus(struct ata_port *ap);
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static u8 ata_check_status(struct ata_port *ap);
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static void ata_dev_select(struct ata_port *ap, unsigned int device,
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unsigned int wait, unsigned int can_sleep);
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static void ata_qc_issue(struct ata_queued_cmd *qc);
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static void ata_tf_load(struct ata_port *ap,
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const struct ata_taskfile *tf);
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static int ata_dev_read_sectors(unsigned char* pdata,
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unsigned long datalen, u32 block, u32 n_block);
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static int ata_dev_write_sectors(unsigned char* pdata,
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unsigned long datalen , u32 block, u32 n_block);
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static void ata_std_dev_select(struct ata_port *ap, unsigned int device);
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static void ata_qc_complete(struct ata_queued_cmd *qc);
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static void __ata_qc_complete(struct ata_queued_cmd *qc);
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static void fill_result_tf(struct ata_queued_cmd *qc);
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static void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
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static void ata_mmio_data_xfer(struct ata_device *dev,
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unsigned char *buf,
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unsigned int buflen,int do_write);
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static void ata_pio_task(struct ata_port *arg_ap);
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static void __ata_port_freeze(struct ata_port *ap);
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static int ata_port_freeze(struct ata_port *ap);
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static void ata_qc_free(struct ata_queued_cmd *qc);
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static void ata_pio_sectors(struct ata_queued_cmd *qc);
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static void ata_pio_sector(struct ata_queued_cmd *qc);
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static void ata_pio_queue_task(struct ata_port *ap,
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void *data,unsigned long delay);
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static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq);
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static int sata_dwc_softreset(struct ata_port *ap);
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static int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
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unsigned int flags, u16 *id);
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static int check_sata_dev_state(void);
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static const struct ata_port_info sata_dwc_port_info[] = {
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{
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.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
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ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING |
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ATA_FLAG_SRST | ATA_FLAG_NCQ,
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.pio_mask = 0x1f,
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.mwdma_mask = 0x07,
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.udma_mask = 0x7f,
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},
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};
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int init_sata(int dev)
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{
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struct sata_dwc_device hsdev;
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struct ata_host host;
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struct ata_port_info pi = sata_dwc_port_info[0];
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struct ata_link *link;
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struct sata_dwc_device_port hsdevp = dwc_devp;
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u8 *base = 0;
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u8 *sata_dma_regs_addr = 0;
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u8 status;
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unsigned long base_addr = 0;
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int chan = 0;
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int rc;
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int i;
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phost = &host;
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base = (u8*)SATA_BASE_ADDR;
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hsdev.sata_dwc_regs = (void *__iomem)(base + SATA_DWC_REG_OFFSET);
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host.n_ports = SATA_DWC_MAX_PORTS;
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for (i = 0; i < SATA_DWC_MAX_PORTS; i++) {
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ap.pflags |= ATA_PFLAG_INITIALIZING;
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ap.flags = ATA_FLAG_DISABLED;
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ap.print_id = -1;
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ap.ctl = ATA_DEVCTL_OBS;
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ap.host = &host;
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ap.last_ctl = 0xFF;
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link = &ap.link;
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link->ap = ≈
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link->pmp = 0;
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link->active_tag = ATA_TAG_POISON;
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link->hw_sata_spd_limit = 0;
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ap.port_no = i;
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host.ports[i] = ≈
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}
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ap.pio_mask = pi.pio_mask;
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ap.mwdma_mask = pi.mwdma_mask;
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ap.udma_mask = pi.udma_mask;
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ap.flags |= pi.flags;
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ap.link.flags |= pi.link_flags;
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host.ports[0]->ioaddr.cmd_addr = base;
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host.ports[0]->ioaddr.scr_addr = base + SATA_DWC_SCR_OFFSET;
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scr_addr_sstatus = base + SATA_DWC_SCR_OFFSET;
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base_addr = (unsigned long)base;
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host.ports[0]->ioaddr.cmd_addr = (void *)base_addr + 0x00;
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host.ports[0]->ioaddr.data_addr = (void *)base_addr + 0x00;
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host.ports[0]->ioaddr.error_addr = (void *)base_addr + 0x04;
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host.ports[0]->ioaddr.feature_addr = (void *)base_addr + 0x04;
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host.ports[0]->ioaddr.nsect_addr = (void *)base_addr + 0x08;
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host.ports[0]->ioaddr.lbal_addr = (void *)base_addr + 0x0c;
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host.ports[0]->ioaddr.lbam_addr = (void *)base_addr + 0x10;
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host.ports[0]->ioaddr.lbah_addr = (void *)base_addr + 0x14;
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host.ports[0]->ioaddr.device_addr = (void *)base_addr + 0x18;
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host.ports[0]->ioaddr.command_addr = (void *)base_addr + 0x1c;
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host.ports[0]->ioaddr.status_addr = (void *)base_addr + 0x1c;
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host.ports[0]->ioaddr.altstatus_addr = (void *)base_addr + 0x20;
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host.ports[0]->ioaddr.ctl_addr = (void *)base_addr + 0x20;
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sata_dma_regs_addr = (u8*)SATA_DMA_REG_ADDR;
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sata_dma_regs = (void *__iomem)sata_dma_regs_addr;
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status = ata_check_altstatus(&ap);
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if (status == 0x7f) {
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printf("Hard Disk not found.\n");
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dev_state = SATA_NODEVICE;
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rc = false;
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return rc;
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}
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printf("Waiting for device...");
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i = 0;
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while (1) {
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udelay(10000);
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status = ata_check_altstatus(&ap);
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if ((status & ATA_BUSY) == 0) {
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printf("\n");
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break;
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}
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i++;
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if (i > (ATA_RESET_TIME * 100)) {
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printf("** TimeOUT **\n");
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dev_state = SATA_NODEVICE;
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rc = false;
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return rc;
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}
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if ((i >= 100) && ((i % 100) == 0))
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printf(".");
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}
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rc = sata_dwc_softreset(&ap);
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if (rc) {
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printf("sata_dwc : error. soft reset failed\n");
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return rc;
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}
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for (chan = 0; chan < DMA_NUM_CHANS; chan++) {
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out_le32(&(sata_dma_regs->interrupt_mask.error.low),
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DMA_DISABLE_CHAN(chan));
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out_le32(&(sata_dma_regs->interrupt_mask.tfr.low),
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DMA_DISABLE_CHAN(chan));
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}
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out_le32(&(sata_dma_regs->dma_cfg.low), DMA_DI);
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out_le32(&hsdev.sata_dwc_regs->intmr,
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SATA_DWC_INTMR_ERRM |
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SATA_DWC_INTMR_PMABRTM);
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/* Unmask the error bits that should trigger
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* an error interrupt by setting the error mask register.
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*/
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out_le32(&hsdev.sata_dwc_regs->errmr, SATA_DWC_SERROR_ERR_BITS);
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hsdev.host = ap.host;
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memset(&hsdevp, 0, sizeof(hsdevp));
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hsdevp.hsdev = &hsdev;
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for (i = 0; i < SATA_DWC_QCMD_MAX; i++)
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hsdevp.cmd_issued[i] = SATA_DWC_CMD_ISSUED_NOT;
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out_le32((void __iomem *)scr_addr_sstatus + 4,
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in_le32((void __iomem *)scr_addr_sstatus + 4));
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rc = 0;
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return rc;
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}
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int reset_sata(int dev)
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{
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return 0;
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}
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static u8 ata_check_altstatus(struct ata_port *ap)
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{
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u8 val = 0;
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val = readb(ap->ioaddr.altstatus_addr);
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return val;
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}
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static int sata_dwc_softreset(struct ata_port *ap)
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{
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u8 nsect,lbal = 0;
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u8 tmp = 0;
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struct ata_ioports *ioaddr = &ap->ioaddr;
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in_le32((void *)ap->ioaddr.scr_addr + (SCR_ERROR * 4));
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writeb(0x55, ioaddr->nsect_addr);
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writeb(0xaa, ioaddr->lbal_addr);
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writeb(0xaa, ioaddr->nsect_addr);
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writeb(0x55, ioaddr->lbal_addr);
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writeb(0x55, ioaddr->nsect_addr);
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writeb(0xaa, ioaddr->lbal_addr);
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nsect = readb(ioaddr->nsect_addr);
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lbal = readb(ioaddr->lbal_addr);
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|
if ((nsect == 0x55) && (lbal == 0xaa)) {
|
|
printf("Device found\n");
|
|
} else {
|
|
printf("No device found\n");
|
|
dev_state = SATA_NODEVICE;
|
|
return false;
|
|
}
|
|
|
|
tmp = ATA_DEVICE_OBS;
|
|
writeb(tmp, ioaddr->device_addr);
|
|
writeb(ap->ctl, ioaddr->ctl_addr);
|
|
|
|
udelay(200);
|
|
|
|
writeb(ap->ctl | ATA_SRST, ioaddr->ctl_addr);
|
|
|
|
udelay(200);
|
|
writeb(ap->ctl, ioaddr->ctl_addr);
|
|
|
|
msleep(150);
|
|
ata_check_status(ap);
|
|
|
|
msleep(50);
|
|
ata_check_status(ap);
|
|
|
|
while (1) {
|
|
u8 status = ata_check_status(ap);
|
|
|
|
if (!(status & ATA_BUSY))
|
|
break;
|
|
|
|
printf("Hard Disk status is BUSY.\n");
|
|
msleep(50);
|
|
}
|
|
|
|
tmp = ATA_DEVICE_OBS;
|
|
writeb(tmp, ioaddr->device_addr);
|
|
|
|
nsect = readb(ioaddr->nsect_addr);
|
|
lbal = readb(ioaddr->lbal_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u8 ata_check_status(struct ata_port *ap)
|
|
{
|
|
u8 val = 0;
|
|
val = readb(ap->ioaddr.status_addr);
|
|
return val;
|
|
}
|
|
|
|
static int ata_id_has_hipm(const u16 *id)
|
|
{
|
|
u16 val = id[76];
|
|
|
|
if (val == 0 || val == 0xffff)
|
|
return -1;
|
|
|
|
return val & (1 << 9);
|
|
}
|
|
|
|
static int ata_id_has_dipm(const u16 *id)
|
|
{
|
|
u16 val = id[78];
|
|
|
|
if (val == 0 || val == 0xffff)
|
|
return -1;
|
|
|
|
return val & (1 << 3);
|
|
}
|
|
|
|
int scan_sata(int dev)
|
|
{
|
|
int i;
|
|
int rc;
|
|
u8 status;
|
|
const u16 *id;
|
|
struct ata_device *ata_dev = &ata_device;
|
|
unsigned long pio_mask, mwdma_mask;
|
|
char revbuf[7];
|
|
u16 iobuf[ATA_SECTOR_WORDS];
|
|
|
|
memset(iobuf, 0, sizeof(iobuf));
|
|
|
|
if (dev_state == SATA_NODEVICE)
|
|
return 1;
|
|
|
|
printf("Waiting for device...");
|
|
i = 0;
|
|
while (1) {
|
|
udelay(10000);
|
|
|
|
status = ata_check_altstatus(&ap);
|
|
|
|
if ((status & ATA_BUSY) == 0) {
|
|
printf("\n");
|
|
break;
|
|
}
|
|
|
|
i++;
|
|
if (i > (ATA_RESET_TIME * 100)) {
|
|
printf("** TimeOUT **\n");
|
|
|
|
dev_state = SATA_NODEVICE;
|
|
return 1;
|
|
}
|
|
if ((i >= 100) && ((i % 100) == 0))
|
|
printf(".");
|
|
}
|
|
|
|
udelay(1000);
|
|
|
|
rc = ata_dev_read_id(ata_dev, &ata_dev->class,
|
|
ATA_READID_POSTRESET,ata_dev->id);
|
|
if (rc) {
|
|
printf("sata_dwc : error. failed sata scan\n");
|
|
return 1;
|
|
}
|
|
|
|
/* SATA drives indicate we have a bridge. We don't know which
|
|
* end of the link the bridge is which is a problem
|
|
*/
|
|
if (ata_id_is_sata(ata_dev->id))
|
|
ap.cbl = ATA_CBL_SATA;
|
|
|
|
id = ata_dev->id;
|
|
|
|
ata_dev->flags &= ~ATA_DFLAG_CFG_MASK;
|
|
ata_dev->max_sectors = 0;
|
|
ata_dev->cdb_len = 0;
|
|
ata_dev->n_sectors = 0;
|
|
ata_dev->cylinders = 0;
|
|
ata_dev->heads = 0;
|
|
ata_dev->sectors = 0;
|
|
|
|
if (id[ATA_ID_FIELD_VALID] & (1 << 1)) {
|
|
pio_mask = id[ATA_ID_PIO_MODES] & 0x03;
|
|
pio_mask <<= 3;
|
|
pio_mask |= 0x7;
|
|
} else {
|
|
/* If word 64 isn't valid then Word 51 high byte holds
|
|
* the PIO timing number for the maximum. Turn it into
|
|
* a mask.
|
|
*/
|
|
u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
|
|
if (mode < 5) {
|
|
pio_mask = (2 << mode) - 1;
|
|
} else {
|
|
pio_mask = 1;
|
|
}
|
|
}
|
|
|
|
mwdma_mask = id[ATA_ID_MWDMA_MODES] & 0x07;
|
|
|
|
if (ata_id_is_cfa(id)) {
|
|
int pio = id[163] & 0x7;
|
|
int dma = (id[163] >> 3) & 7;
|
|
|
|
if (pio)
|
|
pio_mask |= (1 << 5);
|
|
if (pio > 1)
|
|
pio_mask |= (1 << 6);
|
|
if (dma)
|
|
mwdma_mask |= (1 << 3);
|
|
if (dma > 1)
|
|
mwdma_mask |= (1 << 4);
|
|
}
|
|
|
|
if (ata_dev->class == ATA_DEV_ATA) {
|
|
if (ata_id_is_cfa(id)) {
|
|
if (id[162] & 1)
|
|
printf("supports DRM functions and may "
|
|
"not be fully accessable.\n");
|
|
strcpy(revbuf, "CFA");
|
|
} else {
|
|
if (ata_id_has_tpm(id))
|
|
printf("supports DRM functions and may "
|
|
"not be fully accessable.\n");
|
|
}
|
|
|
|
ata_dev->n_sectors = ata_id_n_sectors((u16*)id);
|
|
|
|
if (ata_dev->id[59] & 0x100)
|
|
ata_dev->multi_count = ata_dev->id[59] & 0xff;
|
|
|
|
if (ata_id_has_lba(id)) {
|
|
char ncq_desc[20];
|
|
|
|
ata_dev->flags |= ATA_DFLAG_LBA;
|
|
if (ata_id_has_lba48(id)) {
|
|
ata_dev->flags |= ATA_DFLAG_LBA48;
|
|
|
|
if (ata_dev->n_sectors >= (1UL << 28) &&
|
|
ata_id_has_flush_ext(id))
|
|
ata_dev->flags |= ATA_DFLAG_FLUSH_EXT;
|
|
}
|
|
if (!ata_id_has_ncq(ata_dev->id))
|
|
ncq_desc[0] = '\0';
|
|
|
|
if (ata_dev->horkage & ATA_HORKAGE_NONCQ)
|
|
strcpy(ncq_desc, "NCQ (not used)");
|
|
|
|
if (ap.flags & ATA_FLAG_NCQ)
|
|
ata_dev->flags |= ATA_DFLAG_NCQ;
|
|
}
|
|
ata_dev->cdb_len = 16;
|
|
}
|
|
ata_dev->max_sectors = ATA_MAX_SECTORS;
|
|
if (ata_dev->flags & ATA_DFLAG_LBA48)
|
|
ata_dev->max_sectors = ATA_MAX_SECTORS_LBA48;
|
|
|
|
if (!(ata_dev->horkage & ATA_HORKAGE_IPM)) {
|
|
if (ata_id_has_hipm(ata_dev->id))
|
|
ata_dev->flags |= ATA_DFLAG_HIPM;
|
|
if (ata_id_has_dipm(ata_dev->id))
|
|
ata_dev->flags |= ATA_DFLAG_DIPM;
|
|
}
|
|
|
|
if ((ap.cbl == ATA_CBL_SATA) && (!ata_id_is_sata(ata_dev->id))) {
|
|
ata_dev->udma_mask &= ATA_UDMA5;
|
|
ata_dev->max_sectors = ATA_MAX_SECTORS;
|
|
}
|
|
|
|
if (ata_dev->horkage & ATA_HORKAGE_DIAGNOSTIC) {
|
|
printf("Drive reports diagnostics failure."
|
|
"This may indicate a drive\n");
|
|
printf("fault or invalid emulation."
|
|
"Contact drive vendor for information.\n");
|
|
}
|
|
|
|
rc = check_sata_dev_state();
|
|
|
|
ata_id_c_string(ata_dev->id,
|
|
(unsigned char *)sata_dev_desc[dev].revision,
|
|
ATA_ID_FW_REV, sizeof(sata_dev_desc[dev].revision));
|
|
ata_id_c_string(ata_dev->id,
|
|
(unsigned char *)sata_dev_desc[dev].vendor,
|
|
ATA_ID_PROD, sizeof(sata_dev_desc[dev].vendor));
|
|
ata_id_c_string(ata_dev->id,
|
|
(unsigned char *)sata_dev_desc[dev].product,
|
|
ATA_ID_SERNO, sizeof(sata_dev_desc[dev].product));
|
|
|
|
sata_dev_desc[dev].lba = (u32) ata_dev->n_sectors;
|
|
|
|
#ifdef CONFIG_LBA48
|
|
if (ata_dev->id[83] & (1 << 10)) {
|
|
sata_dev_desc[dev].lba48 = 1;
|
|
} else {
|
|
sata_dev_desc[dev].lba48 = 0;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u8 ata_busy_wait(struct ata_port *ap,
|
|
unsigned int bits,unsigned int max)
|
|
{
|
|
u8 status;
|
|
|
|
do {
|
|
udelay(10);
|
|
status = ata_check_status(ap);
|
|
max--;
|
|
} while (status != 0xff && (status & bits) && (max > 0));
|
|
|
|
return status;
|
|
}
|
|
|
|
static int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
|
|
unsigned int flags, u16 *id)
|
|
{
|
|
struct ata_port *ap = pap;
|
|
unsigned int class = *p_class;
|
|
struct ata_taskfile tf;
|
|
unsigned int err_mask = 0;
|
|
const char *reason;
|
|
int may_fallback = 1, tried_spinup = 0;
|
|
u8 status;
|
|
int rc;
|
|
|
|
status = ata_busy_wait(ap, ATA_BUSY, 30000);
|
|
if (status & ATA_BUSY) {
|
|
printf("BSY = 0 check. timeout.\n");
|
|
rc = false;
|
|
return rc;
|
|
}
|
|
|
|
ata_dev_select(ap, dev->devno, 1, 1);
|
|
|
|
retry:
|
|
memset(&tf, 0, sizeof(tf));
|
|
ap->print_id = 1;
|
|
ap->flags &= ~ATA_FLAG_DISABLED;
|
|
tf.ctl = ap->ctl;
|
|
tf.device = ATA_DEVICE_OBS;
|
|
tf.command = ATA_CMD_ID_ATA;
|
|
tf.protocol = ATA_PROT_PIO;
|
|
|
|
/* Some devices choke if TF registers contain garbage. Make
|
|
* sure those are properly initialized.
|
|
*/
|
|
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
|
|
|
/* Device presence detection is unreliable on some
|
|
* controllers. Always poll IDENTIFY if available.
|
|
*/
|
|
tf.flags |= ATA_TFLAG_POLLING;
|
|
|
|
temp_n_block = 1;
|
|
|
|
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
|
|
sizeof(id[0]) * ATA_ID_WORDS, 0);
|
|
|
|
if (err_mask) {
|
|
if (err_mask & AC_ERR_NODEV_HINT) {
|
|
printf("NODEV after polling detection\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
|
|
/* Device or controller might have reported
|
|
* the wrong device class. Give a shot at the
|
|
* other IDENTIFY if the current one is
|
|
* aborted by the device.
|
|
*/
|
|
if (may_fallback) {
|
|
may_fallback = 0;
|
|
|
|
if (class == ATA_DEV_ATA) {
|
|
class = ATA_DEV_ATAPI;
|
|
} else {
|
|
class = ATA_DEV_ATA;
|
|
}
|
|
goto retry;
|
|
}
|
|
/* Control reaches here iff the device aborted
|
|
* both flavors of IDENTIFYs which happens
|
|
* sometimes with phantom devices.
|
|
*/
|
|
printf("both IDENTIFYs aborted, assuming NODEV\n");
|
|
return -ENOENT;
|
|
}
|
|
rc = -EIO;
|
|
reason = "I/O error";
|
|
goto err_out;
|
|
}
|
|
|
|
/* Falling back doesn't make sense if ID data was read
|
|
* successfully at least once.
|
|
*/
|
|
may_fallback = 0;
|
|
|
|
unsigned int id_cnt;
|
|
|
|
for (id_cnt = 0; id_cnt < ATA_ID_WORDS; id_cnt++)
|
|
id[id_cnt] = le16_to_cpu(id[id_cnt]);
|
|
|
|
|
|
rc = -EINVAL;
|
|
reason = "device reports invalid type";
|
|
|
|
if (class == ATA_DEV_ATA) {
|
|
if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
|
|
goto err_out;
|
|
} else {
|
|
if (ata_id_is_ata(id))
|
|
goto err_out;
|
|
}
|
|
if (!tried_spinup && (id[2] == 0x37c8 || id[2] == 0x738c)) {
|
|
tried_spinup = 1;
|
|
/*
|
|
* Drive powered-up in standby mode, and requires a specific
|
|
* SET_FEATURES spin-up subcommand before it will accept
|
|
* anything other than the original IDENTIFY command.
|
|
*/
|
|
err_mask = ata_dev_set_feature(dev, SETFEATURES_SPINUP, 0);
|
|
if (err_mask && id[2] != 0x738c) {
|
|
rc = -EIO;
|
|
reason = "SPINUP failed";
|
|
goto err_out;
|
|
}
|
|
/*
|
|
* If the drive initially returned incomplete IDENTIFY info,
|
|
* we now must reissue the IDENTIFY command.
|
|
*/
|
|
if (id[2] == 0x37c8)
|
|
goto retry;
|
|
}
|
|
|
|
if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) {
|
|
/*
|
|
* The exact sequence expected by certain pre-ATA4 drives is:
|
|
* SRST RESET
|
|
* IDENTIFY (optional in early ATA)
|
|
* INITIALIZE DEVICE PARAMETERS (later IDE and ATA)
|
|
* anything else..
|
|
* Some drives were very specific about that exact sequence.
|
|
*
|
|
* Note that ATA4 says lba is mandatory so the second check
|
|
* shoud never trigger.
|
|
*/
|
|
if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
|
|
err_mask = ata_dev_init_params(dev, id[3], id[6]);
|
|
if (err_mask) {
|
|
rc = -EIO;
|
|
reason = "INIT_DEV_PARAMS failed";
|
|
goto err_out;
|
|
}
|
|
|
|
/* current CHS translation info (id[53-58]) might be
|
|
* changed. reread the identify device info.
|
|
*/
|
|
flags &= ~ATA_READID_POSTRESET;
|
|
goto retry;
|
|
}
|
|
}
|
|
|
|
*p_class = class;
|
|
return 0;
|
|
|
|
err_out:
|
|
printf("failed to READ ID (%s, err_mask=0x%x)\n", reason, err_mask);
|
|
return rc;
|
|
}
|
|
|
|
static u8 ata_wait_idle(struct ata_port *ap)
|
|
{
|
|
u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
|
|
return status;
|
|
}
|
|
|
|
static void ata_dev_select(struct ata_port *ap, unsigned int device,
|
|
unsigned int wait, unsigned int can_sleep)
|
|
{
|
|
if (wait)
|
|
ata_wait_idle(ap);
|
|
|
|
ata_std_dev_select(ap, device);
|
|
|
|
if (wait)
|
|
ata_wait_idle(ap);
|
|
}
|
|
|
|
static void ata_std_dev_select(struct ata_port *ap, unsigned int device)
|
|
{
|
|
u8 tmp;
|
|
|
|
if (device == 0) {
|
|
tmp = ATA_DEVICE_OBS;
|
|
} else {
|
|
tmp = ATA_DEVICE_OBS | ATA_DEV1;
|
|
}
|
|
|
|
writeb(tmp, ap->ioaddr.device_addr);
|
|
|
|
readb(ap->ioaddr.altstatus_addr);
|
|
|
|
udelay(1);
|
|
}
|
|
|
|
static int waiting_for_reg_state(volatile u8 *offset,
|
|
int timeout_msec,
|
|
u32 sign)
|
|
{
|
|
int i;
|
|
u32 status;
|
|
|
|
for (i = 0; i < timeout_msec; i++) {
|
|
status = readl(offset);
|
|
if ((status & sign) != 0)
|
|
break;
|
|
msleep(1);
|
|
}
|
|
|
|
return (i < timeout_msec) ? 0 : -1;
|
|
}
|
|
|
|
static void ata_qc_reinit(struct ata_queued_cmd *qc)
|
|
{
|
|
qc->dma_dir = DMA_NONE;
|
|
qc->flags = 0;
|
|
qc->nbytes = qc->extrabytes = qc->curbytes = 0;
|
|
qc->n_elem = 0;
|
|
qc->err_mask = 0;
|
|
qc->sect_size = ATA_SECT_SIZE;
|
|
qc->nbytes = ATA_SECT_SIZE * temp_n_block;
|
|
|
|
memset(&qc->tf, 0, sizeof(qc->tf));
|
|
qc->tf.ctl = 0;
|
|
qc->tf.device = ATA_DEVICE_OBS;
|
|
|
|
qc->result_tf.command = ATA_DRDY;
|
|
qc->result_tf.feature = 0;
|
|
}
|
|
|
|
struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
|
|
unsigned int tag)
|
|
{
|
|
if (tag < ATA_MAX_QUEUE)
|
|
return &ap->qcmd[tag];
|
|
return NULL;
|
|
}
|
|
|
|
static void __ata_port_freeze(struct ata_port *ap)
|
|
{
|
|
printf("set port freeze.\n");
|
|
ap->pflags |= ATA_PFLAG_FROZEN;
|
|
}
|
|
|
|
static int ata_port_freeze(struct ata_port *ap)
|
|
{
|
|
__ata_port_freeze(ap);
|
|
return 0;
|
|
}
|
|
|
|
unsigned ata_exec_internal(struct ata_device *dev,
|
|
struct ata_taskfile *tf, const u8 *cdb,
|
|
int dma_dir, unsigned int buflen,
|
|
unsigned long timeout)
|
|
{
|
|
struct ata_link *link = dev->link;
|
|
struct ata_port *ap = pap;
|
|
struct ata_queued_cmd *qc;
|
|
unsigned int tag, preempted_tag;
|
|
u32 preempted_sactive, preempted_qc_active;
|
|
int preempted_nr_active_links;
|
|
unsigned int err_mask;
|
|
int rc = 0;
|
|
u8 status;
|
|
|
|
status = ata_busy_wait(ap, ATA_BUSY, 300000);
|
|
if (status & ATA_BUSY) {
|
|
printf("BSY = 0 check. timeout.\n");
|
|
rc = false;
|
|
return rc;
|
|
}
|
|
|
|
if (ap->pflags & ATA_PFLAG_FROZEN)
|
|
return AC_ERR_SYSTEM;
|
|
|
|
tag = ATA_TAG_INTERNAL;
|
|
|
|
if (test_and_set_bit(tag, &ap->qc_allocated)) {
|
|
rc = false;
|
|
return rc;
|
|
}
|
|
|
|
qc = __ata_qc_from_tag(ap, tag);
|
|
qc->tag = tag;
|
|
qc->ap = ap;
|
|
qc->dev = dev;
|
|
|
|
ata_qc_reinit(qc);
|
|
|
|
preempted_tag = link->active_tag;
|
|
preempted_sactive = link->sactive;
|
|
preempted_qc_active = ap->qc_active;
|
|
preempted_nr_active_links = ap->nr_active_links;
|
|
link->active_tag = ATA_TAG_POISON;
|
|
link->sactive = 0;
|
|
ap->qc_active = 0;
|
|
ap->nr_active_links = 0;
|
|
|
|
qc->tf = *tf;
|
|
if (cdb)
|
|
memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);
|
|
qc->flags |= ATA_QCFLAG_RESULT_TF;
|
|
qc->dma_dir = dma_dir;
|
|
qc->private_data = 0;
|
|
|
|
ata_qc_issue(qc);
|
|
|
|
if (!timeout)
|
|
timeout = ata_probe_timeout * 1000 / HZ;
|
|
|
|
status = ata_busy_wait(ap, ATA_BUSY, 30000);
|
|
if (status & ATA_BUSY) {
|
|
printf("BSY = 0 check. timeout.\n");
|
|
printf("altstatus = 0x%x.\n", status);
|
|
qc->err_mask |= AC_ERR_OTHER;
|
|
return qc->err_mask;
|
|
}
|
|
|
|
if (waiting_for_reg_state(ap->ioaddr.altstatus_addr, 1000, 0x8)) {
|
|
u8 status = 0;
|
|
u8 errorStatus = 0;
|
|
|
|
status = readb(ap->ioaddr.altstatus_addr);
|
|
if ((status & 0x01) != 0) {
|
|
errorStatus = readb(ap->ioaddr.feature_addr);
|
|
if (errorStatus == 0x04 &&
|
|
qc->tf.command == ATA_CMD_PIO_READ_EXT){
|
|
printf("Hard Disk doesn't support LBA48\n");
|
|
dev_state = SATA_ERROR;
|
|
qc->err_mask |= AC_ERR_OTHER;
|
|
return qc->err_mask;
|
|
}
|
|
}
|
|
qc->err_mask |= AC_ERR_OTHER;
|
|
return qc->err_mask;
|
|
}
|
|
|
|
status = ata_busy_wait(ap, ATA_BUSY, 10);
|
|
if (status & ATA_BUSY) {
|
|
printf("BSY = 0 check. timeout.\n");
|
|
qc->err_mask |= AC_ERR_OTHER;
|
|
return qc->err_mask;
|
|
}
|
|
|
|
ata_pio_task(ap);
|
|
|
|
if (!rc) {
|
|
if (qc->flags & ATA_QCFLAG_ACTIVE) {
|
|
qc->err_mask |= AC_ERR_TIMEOUT;
|
|
ata_port_freeze(ap);
|
|
}
|
|
}
|
|
|
|
if (qc->flags & ATA_QCFLAG_FAILED) {
|
|
if (qc->result_tf.command & (ATA_ERR | ATA_DF))
|
|
qc->err_mask |= AC_ERR_DEV;
|
|
|
|
if (!qc->err_mask)
|
|
qc->err_mask |= AC_ERR_OTHER;
|
|
|
|
if (qc->err_mask & ~AC_ERR_OTHER)
|
|
qc->err_mask &= ~AC_ERR_OTHER;
|
|
}
|
|
|
|
*tf = qc->result_tf;
|
|
err_mask = qc->err_mask;
|
|
ata_qc_free(qc);
|
|
link->active_tag = preempted_tag;
|
|
link->sactive = preempted_sactive;
|
|
ap->qc_active = preempted_qc_active;
|
|
ap->nr_active_links = preempted_nr_active_links;
|
|
|
|
if (ap->flags & ATA_FLAG_DISABLED) {
|
|
err_mask |= AC_ERR_SYSTEM;
|
|
ap->flags &= ~ATA_FLAG_DISABLED;
|
|
}
|
|
|
|
return err_mask;
|
|
}
|
|
|
|
static void ata_qc_issue(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
struct ata_link *link = qc->dev->link;
|
|
u8 prot = qc->tf.protocol;
|
|
|
|
if (ata_is_ncq(prot)) {
|
|
if (!link->sactive)
|
|
ap->nr_active_links++;
|
|
link->sactive |= 1 << qc->tag;
|
|
} else {
|
|
ap->nr_active_links++;
|
|
link->active_tag = qc->tag;
|
|
}
|
|
|
|
qc->flags |= ATA_QCFLAG_ACTIVE;
|
|
ap->qc_active |= 1 << qc->tag;
|
|
|
|
if (qc->dev->flags & ATA_DFLAG_SLEEPING) {
|
|
msleep(1);
|
|
return;
|
|
}
|
|
|
|
qc->err_mask |= ata_qc_issue_prot(qc);
|
|
if (qc->err_mask)
|
|
goto err;
|
|
|
|
return;
|
|
err:
|
|
ata_qc_complete(qc);
|
|
}
|
|
|
|
static unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
|
|
if (ap->flags & ATA_FLAG_PIO_POLLING) {
|
|
switch (qc->tf.protocol) {
|
|
case ATA_PROT_PIO:
|
|
case ATA_PROT_NODATA:
|
|
case ATAPI_PROT_PIO:
|
|
case ATAPI_PROT_NODATA:
|
|
qc->tf.flags |= ATA_TFLAG_POLLING;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ata_dev_select(ap, qc->dev->devno, 1, 0);
|
|
|
|
switch (qc->tf.protocol) {
|
|
case ATA_PROT_PIO:
|
|
if (qc->tf.flags & ATA_TFLAG_POLLING)
|
|
qc->tf.ctl |= ATA_NIEN;
|
|
|
|
ata_tf_to_host(ap, &qc->tf);
|
|
|
|
ap->hsm_task_state = HSM_ST;
|
|
|
|
if (qc->tf.flags & ATA_TFLAG_POLLING)
|
|
ata_pio_queue_task(ap, qc, 0);
|
|
|
|
break;
|
|
|
|
default:
|
|
return AC_ERR_SYSTEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ata_tf_to_host(struct ata_port *ap,
|
|
const struct ata_taskfile *tf)
|
|
{
|
|
ata_tf_load(ap, tf);
|
|
ata_exec_command(ap, tf);
|
|
}
|
|
|
|
static void ata_tf_load(struct ata_port *ap,
|
|
const struct ata_taskfile *tf)
|
|
{
|
|
struct ata_ioports *ioaddr = &ap->ioaddr;
|
|
unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
|
|
|
|
if (tf->ctl != ap->last_ctl) {
|
|
if (ioaddr->ctl_addr)
|
|
writeb(tf->ctl, ioaddr->ctl_addr);
|
|
ap->last_ctl = tf->ctl;
|
|
ata_wait_idle(ap);
|
|
}
|
|
|
|
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
|
|
writeb(tf->hob_feature, ioaddr->feature_addr);
|
|
writeb(tf->hob_nsect, ioaddr->nsect_addr);
|
|
writeb(tf->hob_lbal, ioaddr->lbal_addr);
|
|
writeb(tf->hob_lbam, ioaddr->lbam_addr);
|
|
writeb(tf->hob_lbah, ioaddr->lbah_addr);
|
|
}
|
|
|
|
if (is_addr) {
|
|
writeb(tf->feature, ioaddr->feature_addr);
|
|
writeb(tf->nsect, ioaddr->nsect_addr);
|
|
writeb(tf->lbal, ioaddr->lbal_addr);
|
|
writeb(tf->lbam, ioaddr->lbam_addr);
|
|
writeb(tf->lbah, ioaddr->lbah_addr);
|
|
}
|
|
|
|
if (tf->flags & ATA_TFLAG_DEVICE)
|
|
writeb(tf->device, ioaddr->device_addr);
|
|
|
|
ata_wait_idle(ap);
|
|
}
|
|
|
|
static void ata_exec_command(struct ata_port *ap,
|
|
const struct ata_taskfile *tf)
|
|
{
|
|
writeb(tf->command, ap->ioaddr.command_addr);
|
|
|
|
readb(ap->ioaddr.altstatus_addr);
|
|
|
|
udelay(1);
|
|
}
|
|
|
|
static void ata_pio_queue_task(struct ata_port *ap,
|
|
void *data,unsigned long delay)
|
|
{
|
|
ap->port_task_data = data;
|
|
}
|
|
|
|
static unsigned int ac_err_mask(u8 status)
|
|
{
|
|
if (status & (ATA_BUSY | ATA_DRQ))
|
|
return AC_ERR_HSM;
|
|
if (status & (ATA_ERR | ATA_DF))
|
|
return AC_ERR_DEV;
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int __ac_err_mask(u8 status)
|
|
{
|
|
unsigned int mask = ac_err_mask(status);
|
|
if (mask == 0)
|
|
return AC_ERR_OTHER;
|
|
return mask;
|
|
}
|
|
|
|
static void ata_pio_task(struct ata_port *arg_ap)
|
|
{
|
|
struct ata_port *ap = arg_ap;
|
|
struct ata_queued_cmd *qc = ap->port_task_data;
|
|
u8 status;
|
|
int poll_next;
|
|
|
|
fsm_start:
|
|
/*
|
|
* This is purely heuristic. This is a fast path.
|
|
* Sometimes when we enter, BSY will be cleared in
|
|
* a chk-status or two. If not, the drive is probably seeking
|
|
* or something. Snooze for a couple msecs, then
|
|
* chk-status again. If still busy, queue delayed work.
|
|
*/
|
|
status = ata_busy_wait(ap, ATA_BUSY, 5);
|
|
if (status & ATA_BUSY) {
|
|
msleep(2);
|
|
status = ata_busy_wait(ap, ATA_BUSY, 10);
|
|
if (status & ATA_BUSY) {
|
|
ata_pio_queue_task(ap, qc, ATA_SHORT_PAUSE);
|
|
return;
|
|
}
|
|
}
|
|
|
|
poll_next = ata_hsm_move(ap, qc, status, 1);
|
|
|
|
/* another command or interrupt handler
|
|
* may be running at this point.
|
|
*/
|
|
if (poll_next)
|
|
goto fsm_start;
|
|
}
|
|
|
|
static int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
|
|
u8 status, int in_wq)
|
|
{
|
|
int poll_next;
|
|
|
|
fsm_start:
|
|
switch (ap->hsm_task_state) {
|
|
case HSM_ST_FIRST:
|
|
poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);
|
|
|
|
if ((status & ATA_DRQ) == 0) {
|
|
if (status & (ATA_ERR | ATA_DF)) {
|
|
qc->err_mask |= AC_ERR_DEV;
|
|
} else {
|
|
qc->err_mask |= AC_ERR_HSM;
|
|
}
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
goto fsm_start;
|
|
}
|
|
|
|
/* Device should not ask for data transfer (DRQ=1)
|
|
* when it finds something wrong.
|
|
* We ignore DRQ here and stop the HSM by
|
|
* changing hsm_task_state to HSM_ST_ERR and
|
|
* let the EH abort the command or reset the device.
|
|
*/
|
|
if (status & (ATA_ERR | ATA_DF)) {
|
|
if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {
|
|
printf("DRQ=1 with device error, "
|
|
"dev_stat 0x%X\n", status);
|
|
qc->err_mask |= AC_ERR_HSM;
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
goto fsm_start;
|
|
}
|
|
}
|
|
|
|
if (qc->tf.protocol == ATA_PROT_PIO) {
|
|
/* PIO data out protocol.
|
|
* send first data block.
|
|
*/
|
|
/* ata_pio_sectors() might change the state
|
|
* to HSM_ST_LAST. so, the state is changed here
|
|
* before ata_pio_sectors().
|
|
*/
|
|
ap->hsm_task_state = HSM_ST;
|
|
ata_pio_sectors(qc);
|
|
} else {
|
|
printf("protocol is not ATA_PROT_PIO \n");
|
|
}
|
|
break;
|
|
|
|
case HSM_ST:
|
|
if ((status & ATA_DRQ) == 0) {
|
|
if (status & (ATA_ERR | ATA_DF)) {
|
|
qc->err_mask |= AC_ERR_DEV;
|
|
} else {
|
|
/* HSM violation. Let EH handle this.
|
|
* Phantom devices also trigger this
|
|
* condition. Mark hint.
|
|
*/
|
|
qc->err_mask |= AC_ERR_HSM | AC_ERR_NODEV_HINT;
|
|
}
|
|
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
goto fsm_start;
|
|
}
|
|
/* For PIO reads, some devices may ask for
|
|
* data transfer (DRQ=1) alone with ERR=1.
|
|
* We respect DRQ here and transfer one
|
|
* block of junk data before changing the
|
|
* hsm_task_state to HSM_ST_ERR.
|
|
*
|
|
* For PIO writes, ERR=1 DRQ=1 doesn't make
|
|
* sense since the data block has been
|
|
* transferred to the device.
|
|
*/
|
|
if (status & (ATA_ERR | ATA_DF)) {
|
|
qc->err_mask |= AC_ERR_DEV;
|
|
|
|
if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
|
|
ata_pio_sectors(qc);
|
|
status = ata_wait_idle(ap);
|
|
}
|
|
|
|
if (status & (ATA_BUSY | ATA_DRQ))
|
|
qc->err_mask |= AC_ERR_HSM;
|
|
|
|
/* ata_pio_sectors() might change the
|
|
* state to HSM_ST_LAST. so, the state
|
|
* is changed after ata_pio_sectors().
|
|
*/
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
goto fsm_start;
|
|
}
|
|
|
|
ata_pio_sectors(qc);
|
|
if (ap->hsm_task_state == HSM_ST_LAST &&
|
|
(!(qc->tf.flags & ATA_TFLAG_WRITE))) {
|
|
status = ata_wait_idle(ap);
|
|
goto fsm_start;
|
|
}
|
|
|
|
poll_next = 1;
|
|
break;
|
|
|
|
case HSM_ST_LAST:
|
|
if (!ata_ok(status)) {
|
|
qc->err_mask |= __ac_err_mask(status);
|
|
ap->hsm_task_state = HSM_ST_ERR;
|
|
goto fsm_start;
|
|
}
|
|
|
|
ap->hsm_task_state = HSM_ST_IDLE;
|
|
|
|
ata_hsm_qc_complete(qc, in_wq);
|
|
|
|
poll_next = 0;
|
|
break;
|
|
|
|
case HSM_ST_ERR:
|
|
/* make sure qc->err_mask is available to
|
|
* know what's wrong and recover
|
|
*/
|
|
ap->hsm_task_state = HSM_ST_IDLE;
|
|
|
|
ata_hsm_qc_complete(qc, in_wq);
|
|
|
|
poll_next = 0;
|
|
break;
|
|
default:
|
|
poll_next = 0;
|
|
}
|
|
|
|
return poll_next;
|
|
}
|
|
|
|
static void ata_pio_sectors(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap;
|
|
ap = pap;
|
|
qc->pdata = ap->pdata;
|
|
|
|
ata_pio_sector(qc);
|
|
|
|
readb(qc->ap->ioaddr.altstatus_addr);
|
|
udelay(1);
|
|
}
|
|
|
|
static void ata_pio_sector(struct ata_queued_cmd *qc)
|
|
{
|
|
int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
|
|
struct ata_port *ap = qc->ap;
|
|
unsigned int offset;
|
|
unsigned char *buf;
|
|
char temp_data_buf[512];
|
|
|
|
if (qc->curbytes == qc->nbytes - qc->sect_size)
|
|
ap->hsm_task_state = HSM_ST_LAST;
|
|
|
|
offset = qc->curbytes;
|
|
|
|
switch (qc->tf.command) {
|
|
case ATA_CMD_ID_ATA:
|
|
buf = (unsigned char *)&ata_device.id[0];
|
|
break;
|
|
case ATA_CMD_PIO_READ_EXT:
|
|
case ATA_CMD_PIO_READ:
|
|
case ATA_CMD_PIO_WRITE_EXT:
|
|
case ATA_CMD_PIO_WRITE:
|
|
buf = qc->pdata + offset;
|
|
break;
|
|
default:
|
|
buf = (unsigned char *)&temp_data_buf[0];
|
|
}
|
|
|
|
ata_mmio_data_xfer(qc->dev, buf, qc->sect_size, do_write);
|
|
|
|
qc->curbytes += qc->sect_size;
|
|
|
|
}
|
|
|
|
static void ata_mmio_data_xfer(struct ata_device *dev, unsigned char *buf,
|
|
unsigned int buflen, int do_write)
|
|
{
|
|
struct ata_port *ap = pap;
|
|
void __iomem *data_addr = ap->ioaddr.data_addr;
|
|
unsigned int words = buflen >> 1;
|
|
u16 *buf16 = (u16 *)buf;
|
|
unsigned int i = 0;
|
|
|
|
udelay(100);
|
|
if (do_write) {
|
|
for (i = 0; i < words; i++)
|
|
writew(le16_to_cpu(buf16[i]), data_addr);
|
|
} else {
|
|
for (i = 0; i < words; i++)
|
|
buf16[i] = cpu_to_le16(readw(data_addr));
|
|
}
|
|
|
|
if (buflen & 0x01) {
|
|
__le16 align_buf[1] = { 0 };
|
|
unsigned char *trailing_buf = buf + buflen - 1;
|
|
|
|
if (do_write) {
|
|
memcpy(align_buf, trailing_buf, 1);
|
|
writew(le16_to_cpu(align_buf[0]), data_addr);
|
|
} else {
|
|
align_buf[0] = cpu_to_le16(readw(data_addr));
|
|
memcpy(trailing_buf, align_buf, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
|
|
if (in_wq) {
|
|
/* EH might have kicked in while host lock is
|
|
* released.
|
|
*/
|
|
qc = &ap->qcmd[qc->tag];
|
|
if (qc) {
|
|
if (!(qc->err_mask & AC_ERR_HSM)) {
|
|
ata_irq_on(ap);
|
|
ata_qc_complete(qc);
|
|
} else {
|
|
ata_port_freeze(ap);
|
|
}
|
|
}
|
|
} else {
|
|
if (!(qc->err_mask & AC_ERR_HSM)) {
|
|
ata_qc_complete(qc);
|
|
} else {
|
|
ata_port_freeze(ap);
|
|
}
|
|
}
|
|
}
|
|
|
|
static u8 ata_irq_on(struct ata_port *ap)
|
|
{
|
|
struct ata_ioports *ioaddr = &ap->ioaddr;
|
|
u8 tmp;
|
|
|
|
ap->ctl &= ~ATA_NIEN;
|
|
ap->last_ctl = ap->ctl;
|
|
|
|
if (ioaddr->ctl_addr)
|
|
writeb(ap->ctl, ioaddr->ctl_addr);
|
|
|
|
tmp = ata_wait_idle(ap);
|
|
|
|
return tmp;
|
|
}
|
|
|
|
static unsigned int ata_tag_internal(unsigned int tag)
|
|
{
|
|
return tag == ATA_MAX_QUEUE - 1;
|
|
}
|
|
|
|
static void ata_qc_complete(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_device *dev = qc->dev;
|
|
if (qc->err_mask)
|
|
qc->flags |= ATA_QCFLAG_FAILED;
|
|
|
|
if (qc->flags & ATA_QCFLAG_FAILED) {
|
|
if (!ata_tag_internal(qc->tag)) {
|
|
fill_result_tf(qc);
|
|
return;
|
|
}
|
|
}
|
|
if (qc->flags & ATA_QCFLAG_RESULT_TF)
|
|
fill_result_tf(qc);
|
|
|
|
/* Some commands need post-processing after successful
|
|
* completion.
|
|
*/
|
|
switch (qc->tf.command) {
|
|
case ATA_CMD_SET_FEATURES:
|
|
if (qc->tf.feature != SETFEATURES_WC_ON &&
|
|
qc->tf.feature != SETFEATURES_WC_OFF)
|
|
break;
|
|
case ATA_CMD_INIT_DEV_PARAMS:
|
|
case ATA_CMD_SET_MULTI:
|
|
break;
|
|
|
|
case ATA_CMD_SLEEP:
|
|
dev->flags |= ATA_DFLAG_SLEEPING;
|
|
break;
|
|
}
|
|
|
|
__ata_qc_complete(qc);
|
|
}
|
|
|
|
static void fill_result_tf(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
|
|
qc->result_tf.flags = qc->tf.flags;
|
|
ata_tf_read(ap, &qc->result_tf);
|
|
}
|
|
|
|
static void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
|
|
{
|
|
struct ata_ioports *ioaddr = &ap->ioaddr;
|
|
|
|
tf->command = ata_check_status(ap);
|
|
tf->feature = readb(ioaddr->error_addr);
|
|
tf->nsect = readb(ioaddr->nsect_addr);
|
|
tf->lbal = readb(ioaddr->lbal_addr);
|
|
tf->lbam = readb(ioaddr->lbam_addr);
|
|
tf->lbah = readb(ioaddr->lbah_addr);
|
|
tf->device = readb(ioaddr->device_addr);
|
|
|
|
if (tf->flags & ATA_TFLAG_LBA48) {
|
|
if (ioaddr->ctl_addr) {
|
|
writeb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
|
|
|
|
tf->hob_feature = readb(ioaddr->error_addr);
|
|
tf->hob_nsect = readb(ioaddr->nsect_addr);
|
|
tf->hob_lbal = readb(ioaddr->lbal_addr);
|
|
tf->hob_lbam = readb(ioaddr->lbam_addr);
|
|
tf->hob_lbah = readb(ioaddr->lbah_addr);
|
|
|
|
writeb(tf->ctl, ioaddr->ctl_addr);
|
|
ap->last_ctl = tf->ctl;
|
|
} else {
|
|
printf("sata_dwc warnning register read.\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void __ata_qc_complete(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
struct ata_link *link = qc->dev->link;
|
|
|
|
link->active_tag = ATA_TAG_POISON;
|
|
ap->nr_active_links--;
|
|
|
|
if (qc->flags & ATA_QCFLAG_CLEAR_EXCL && ap->excl_link == link)
|
|
ap->excl_link = NULL;
|
|
|
|
qc->flags &= ~ATA_QCFLAG_ACTIVE;
|
|
ap->qc_active &= ~(1 << qc->tag);
|
|
}
|
|
|
|
static void ata_qc_free(struct ata_queued_cmd *qc)
|
|
{
|
|
struct ata_port *ap = qc->ap;
|
|
unsigned int tag;
|
|
qc->flags = 0;
|
|
tag = qc->tag;
|
|
if (tag < ATA_MAX_QUEUE) {
|
|
qc->tag = ATA_TAG_POISON;
|
|
clear_bit(tag, &ap->qc_allocated);
|
|
}
|
|
}
|
|
|
|
static int check_sata_dev_state(void)
|
|
{
|
|
unsigned long datalen;
|
|
unsigned char *pdata;
|
|
int ret = 0;
|
|
int i = 0;
|
|
char temp_data_buf[512];
|
|
|
|
while (1) {
|
|
udelay(10000);
|
|
|
|
pdata = (unsigned char*)&temp_data_buf[0];
|
|
datalen = 512;
|
|
|
|
ret = ata_dev_read_sectors(pdata, datalen, 0, 1);
|
|
|
|
if (ret == true)
|
|
break;
|
|
|
|
i++;
|
|
if (i > (ATA_RESET_TIME * 100)) {
|
|
printf("** TimeOUT **\n");
|
|
dev_state = SATA_NODEVICE;
|
|
return false;
|
|
}
|
|
|
|
if ((i >= 100) && ((i % 100) == 0))
|
|
printf(".");
|
|
}
|
|
|
|
dev_state = SATA_READY;
|
|
|
|
return true;
|
|
}
|
|
|
|
static unsigned int ata_dev_set_feature(struct ata_device *dev,
|
|
u8 enable, u8 feature)
|
|
{
|
|
struct ata_taskfile tf;
|
|
struct ata_port *ap;
|
|
ap = pap;
|
|
unsigned int err_mask;
|
|
|
|
memset(&tf, 0, sizeof(tf));
|
|
tf.ctl = ap->ctl;
|
|
|
|
tf.device = ATA_DEVICE_OBS;
|
|
tf.command = ATA_CMD_SET_FEATURES;
|
|
tf.feature = enable;
|
|
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
|
tf.protocol = ATA_PROT_NODATA;
|
|
tf.nsect = feature;
|
|
|
|
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, 0, 0);
|
|
|
|
return err_mask;
|
|
}
|
|
|
|
static unsigned int ata_dev_init_params(struct ata_device *dev,
|
|
u16 heads, u16 sectors)
|
|
{
|
|
struct ata_taskfile tf;
|
|
struct ata_port *ap;
|
|
ap = pap;
|
|
unsigned int err_mask;
|
|
|
|
if (sectors < 1 || sectors > 255 || heads < 1 || heads > 16)
|
|
return AC_ERR_INVALID;
|
|
|
|
memset(&tf, 0, sizeof(tf));
|
|
tf.ctl = ap->ctl;
|
|
tf.device = ATA_DEVICE_OBS;
|
|
tf.command = ATA_CMD_INIT_DEV_PARAMS;
|
|
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
|
tf.protocol = ATA_PROT_NODATA;
|
|
tf.nsect = sectors;
|
|
tf.device |= (heads - 1) & 0x0f;
|
|
|
|
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, 0, 0);
|
|
|
|
if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED))
|
|
err_mask = 0;
|
|
|
|
return err_mask;
|
|
}
|
|
|
|
#if defined(CONFIG_SATA_DWC) && !defined(CONFIG_LBA48)
|
|
#define SATA_MAX_READ_BLK 0xFF
|
|
#else
|
|
#define SATA_MAX_READ_BLK 0xFFFF
|
|
#endif
|
|
|
|
ulong sata_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
|
|
{
|
|
ulong start,blks, buf_addr;
|
|
unsigned short smallblks;
|
|
unsigned long datalen;
|
|
unsigned char *pdata;
|
|
device &= 0xff;
|
|
|
|
u32 block = 0;
|
|
u32 n_block = 0;
|
|
|
|
if (dev_state != SATA_READY)
|
|
return 0;
|
|
|
|
buf_addr = (unsigned long)buffer;
|
|
start = blknr;
|
|
blks = blkcnt;
|
|
do {
|
|
pdata = (unsigned char *)buf_addr;
|
|
if (blks > SATA_MAX_READ_BLK) {
|
|
datalen = sata_dev_desc[device].blksz * SATA_MAX_READ_BLK;
|
|
smallblks = SATA_MAX_READ_BLK;
|
|
|
|
block = (u32)start;
|
|
n_block = (u32)smallblks;
|
|
|
|
start += SATA_MAX_READ_BLK;
|
|
blks -= SATA_MAX_READ_BLK;
|
|
} else {
|
|
datalen = sata_dev_desc[device].blksz * SATA_MAX_READ_BLK;
|
|
datalen = sata_dev_desc[device].blksz * blks;
|
|
smallblks = (unsigned short)blks;
|
|
|
|
block = (u32)start;
|
|
n_block = (u32)smallblks;
|
|
|
|
start += blks;
|
|
blks = 0;
|
|
}
|
|
|
|
if (ata_dev_read_sectors(pdata, datalen, block, n_block) != true) {
|
|
printf("sata_dwc : Hard disk read error.\n");
|
|
blkcnt -= blks;
|
|
break;
|
|
}
|
|
buf_addr += datalen;
|
|
} while (blks != 0);
|
|
|
|
return (blkcnt);
|
|
}
|
|
|
|
static int ata_dev_read_sectors(unsigned char *pdata, unsigned long datalen,
|
|
u32 block, u32 n_block)
|
|
{
|
|
struct ata_port *ap = pap;
|
|
struct ata_device *dev = &ata_device;
|
|
struct ata_taskfile tf;
|
|
unsigned int class = ATA_DEV_ATA;
|
|
unsigned int err_mask = 0;
|
|
const char *reason;
|
|
int may_fallback = 1;
|
|
|
|
if (dev_state == SATA_ERROR)
|
|
return false;
|
|
|
|
ata_dev_select(ap, dev->devno, 1, 1);
|
|
|
|
retry:
|
|
memset(&tf, 0, sizeof(tf));
|
|
tf.ctl = ap->ctl;
|
|
ap->print_id = 1;
|
|
ap->flags &= ~ATA_FLAG_DISABLED;
|
|
|
|
ap->pdata = pdata;
|
|
|
|
tf.device = ATA_DEVICE_OBS;
|
|
|
|
temp_n_block = n_block;
|
|
|
|
#ifdef CONFIG_LBA48
|
|
tf.command = ATA_CMD_PIO_READ_EXT;
|
|
tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
|
|
|
|
tf.hob_feature = 31;
|
|
tf.feature = 31;
|
|
tf.hob_nsect = (n_block >> 8) & 0xff;
|
|
tf.nsect = n_block & 0xff;
|
|
|
|
tf.hob_lbah = 0x0;
|
|
tf.hob_lbam = 0x0;
|
|
tf.hob_lbal = (block >> 24) & 0xff;
|
|
tf.lbah = (block >> 16) & 0xff;
|
|
tf.lbam = (block >> 8) & 0xff;
|
|
tf.lbal = block & 0xff;
|
|
|
|
tf.device = 1 << 6;
|
|
if (tf.flags & ATA_TFLAG_FUA)
|
|
tf.device |= 1 << 7;
|
|
#else
|
|
tf.command = ATA_CMD_PIO_READ;
|
|
tf.flags |= ATA_TFLAG_LBA ;
|
|
|
|
tf.feature = 31;
|
|
tf.nsect = n_block & 0xff;
|
|
|
|
tf.lbah = (block >> 16) & 0xff;
|
|
tf.lbam = (block >> 8) & 0xff;
|
|
tf.lbal = block & 0xff;
|
|
|
|
tf.device = (block >> 24) & 0xf;
|
|
|
|
tf.device |= 1 << 6;
|
|
if (tf.flags & ATA_TFLAG_FUA)
|
|
tf.device |= 1 << 7;
|
|
|
|
#endif
|
|
|
|
tf.protocol = ATA_PROT_PIO;
|
|
|
|
/* Some devices choke if TF registers contain garbage. Make
|
|
* sure those are properly initialized.
|
|
*/
|
|
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
|
tf.flags |= ATA_TFLAG_POLLING;
|
|
|
|
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, 0, 0);
|
|
|
|
if (err_mask) {
|
|
if (err_mask & AC_ERR_NODEV_HINT) {
|
|
printf("READ_SECTORS NODEV after polling detection\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
|
|
/* Device or controller might have reported
|
|
* the wrong device class. Give a shot at the
|
|
* other IDENTIFY if the current one is
|
|
* aborted by the device.
|
|
*/
|
|
if (may_fallback) {
|
|
may_fallback = 0;
|
|
|
|
if (class == ATA_DEV_ATA) {
|
|
class = ATA_DEV_ATAPI;
|
|
} else {
|
|
class = ATA_DEV_ATA;
|
|
}
|
|
goto retry;
|
|
}
|
|
/* Control reaches here iff the device aborted
|
|
* both flavors of IDENTIFYs which happens
|
|
* sometimes with phantom devices.
|
|
*/
|
|
printf("both IDENTIFYs aborted, assuming NODEV\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
reason = "I/O error";
|
|
goto err_out;
|
|
}
|
|
|
|
return true;
|
|
|
|
err_out:
|
|
printf("failed to READ SECTORS (%s, err_mask=0x%x)\n", reason, err_mask);
|
|
return false;
|
|
}
|
|
|
|
#if defined(CONFIG_SATA_DWC) && !defined(CONFIG_LBA48)
|
|
#define SATA_MAX_WRITE_BLK 0xFF
|
|
#else
|
|
#define SATA_MAX_WRITE_BLK 0xFFFF
|
|
#endif
|
|
|
|
ulong sata_write(int device, ulong blknr, lbaint_t blkcnt, const void *buffer)
|
|
{
|
|
ulong start,blks, buf_addr;
|
|
unsigned short smallblks;
|
|
unsigned long datalen;
|
|
unsigned char *pdata;
|
|
device &= 0xff;
|
|
|
|
|
|
u32 block = 0;
|
|
u32 n_block = 0;
|
|
|
|
if (dev_state != SATA_READY)
|
|
return 0;
|
|
|
|
buf_addr = (unsigned long)buffer;
|
|
start = blknr;
|
|
blks = blkcnt;
|
|
do {
|
|
pdata = (unsigned char *)buf_addr;
|
|
if (blks > SATA_MAX_WRITE_BLK) {
|
|
datalen = sata_dev_desc[device].blksz * SATA_MAX_WRITE_BLK;
|
|
smallblks = SATA_MAX_WRITE_BLK;
|
|
|
|
block = (u32)start;
|
|
n_block = (u32)smallblks;
|
|
|
|
start += SATA_MAX_WRITE_BLK;
|
|
blks -= SATA_MAX_WRITE_BLK;
|
|
} else {
|
|
datalen = sata_dev_desc[device].blksz * blks;
|
|
smallblks = (unsigned short)blks;
|
|
|
|
block = (u32)start;
|
|
n_block = (u32)smallblks;
|
|
|
|
start += blks;
|
|
blks = 0;
|
|
}
|
|
|
|
if (ata_dev_write_sectors(pdata, datalen, block, n_block) != true) {
|
|
printf("sata_dwc : Hard disk read error.\n");
|
|
blkcnt -= blks;
|
|
break;
|
|
}
|
|
buf_addr += datalen;
|
|
} while (blks != 0);
|
|
|
|
return (blkcnt);
|
|
}
|
|
|
|
static int ata_dev_write_sectors(unsigned char* pdata, unsigned long datalen,
|
|
u32 block, u32 n_block)
|
|
{
|
|
struct ata_port *ap = pap;
|
|
struct ata_device *dev = &ata_device;
|
|
struct ata_taskfile tf;
|
|
unsigned int class = ATA_DEV_ATA;
|
|
unsigned int err_mask = 0;
|
|
const char *reason;
|
|
int may_fallback = 1;
|
|
|
|
if (dev_state == SATA_ERROR)
|
|
return false;
|
|
|
|
ata_dev_select(ap, dev->devno, 1, 1);
|
|
|
|
retry:
|
|
memset(&tf, 0, sizeof(tf));
|
|
tf.ctl = ap->ctl;
|
|
ap->print_id = 1;
|
|
ap->flags &= ~ATA_FLAG_DISABLED;
|
|
|
|
ap->pdata = pdata;
|
|
|
|
tf.device = ATA_DEVICE_OBS;
|
|
|
|
temp_n_block = n_block;
|
|
|
|
|
|
#ifdef CONFIG_LBA48
|
|
tf.command = ATA_CMD_PIO_WRITE_EXT;
|
|
tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48 | ATA_TFLAG_WRITE;
|
|
|
|
tf.hob_feature = 31;
|
|
tf.feature = 31;
|
|
tf.hob_nsect = (n_block >> 8) & 0xff;
|
|
tf.nsect = n_block & 0xff;
|
|
|
|
tf.hob_lbah = 0x0;
|
|
tf.hob_lbam = 0x0;
|
|
tf.hob_lbal = (block >> 24) & 0xff;
|
|
tf.lbah = (block >> 16) & 0xff;
|
|
tf.lbam = (block >> 8) & 0xff;
|
|
tf.lbal = block & 0xff;
|
|
|
|
tf.device = 1 << 6;
|
|
if (tf.flags & ATA_TFLAG_FUA)
|
|
tf.device |= 1 << 7;
|
|
#else
|
|
tf.command = ATA_CMD_PIO_WRITE;
|
|
tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_WRITE;
|
|
|
|
tf.feature = 31;
|
|
tf.nsect = n_block & 0xff;
|
|
|
|
tf.lbah = (block >> 16) & 0xff;
|
|
tf.lbam = (block >> 8) & 0xff;
|
|
tf.lbal = block & 0xff;
|
|
|
|
tf.device = (block >> 24) & 0xf;
|
|
|
|
tf.device |= 1 << 6;
|
|
if (tf.flags & ATA_TFLAG_FUA)
|
|
tf.device |= 1 << 7;
|
|
|
|
#endif
|
|
|
|
tf.protocol = ATA_PROT_PIO;
|
|
|
|
/* Some devices choke if TF registers contain garbage. Make
|
|
* sure those are properly initialized.
|
|
*/
|
|
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
|
tf.flags |= ATA_TFLAG_POLLING;
|
|
|
|
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, 0, 0);
|
|
|
|
if (err_mask) {
|
|
if (err_mask & AC_ERR_NODEV_HINT) {
|
|
printf("READ_SECTORS NODEV after polling detection\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
|
|
/* Device or controller might have reported
|
|
* the wrong device class. Give a shot at the
|
|
* other IDENTIFY if the current one is
|
|
* aborted by the device.
|
|
*/
|
|
if (may_fallback) {
|
|
may_fallback = 0;
|
|
|
|
if (class == ATA_DEV_ATA) {
|
|
class = ATA_DEV_ATAPI;
|
|
} else {
|
|
class = ATA_DEV_ATA;
|
|
}
|
|
goto retry;
|
|
}
|
|
/* Control reaches here iff the device aborted
|
|
* both flavors of IDENTIFYs which happens
|
|
* sometimes with phantom devices.
|
|
*/
|
|
printf("both IDENTIFYs aborted, assuming NODEV\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
reason = "I/O error";
|
|
goto err_out;
|
|
}
|
|
|
|
return true;
|
|
|
|
err_out:
|
|
printf("failed to WRITE SECTORS (%s, err_mask=0x%x)\n", reason, err_mask);
|
|
return false;
|
|
}
|