• Linus Walleij's avatar
    ata: Add driver for Faraday Technology FTIDE010 · be4e456e
    Linus Walleij authored
    This adds a driver for the Faraday Technology FTIDE010
    PATA IP block.
    
    When used with the Storlink/Storm/Cortina Systems Gemini
    SoC, the PATA interface is accompanied by a PATA<->SATA
    bridge, so while the device appear as a PATA controller,
    it attaches physically to SATA disks, and also has a
    designated memory area with registers to set up the bridge.
    
    The Gemini SATA bridge is separated into its own driver
    file to make things modular and make it possible to reuse
    the PATA driver as stand-alone on other systems than the
    Gemini.
    
    dmesg excerpt from the D-Link DIR-685 storage router:
    gemini-sata-bridge 46000000.sata: SATA ID 00000e00, PHY ID: 01000100
    gemini-sata-bridge 46000000.sata: set up the Gemini IDE/SATA nexus
    ftide010 63000000.ata: set up Gemini PATA0
    ftide010 63000000.ata: device ID 00000500, irq 26, io base 0x63000000
    ftide010 63000000.ata: SATA0 (master) start
    gemini-sata-bridge 46000000.sata: SATA0 PHY ready
    scsi host0: pata-ftide010
    ata1: PATA max UDMA/133 irq 26
    ata1.00: ATA-8: INTEL SSDSA2CW120G3, 4PC10302, max UDMA/133
    ata1.00: 234441648 sectors, multi 1: LBA48 NCQ (depth 0/32)
    ata1.00: configured for UDMA/133
    scsi 0:0:0:0: Direct-Access     ATA      INTEL SSDSA2CW12 0302 PQ: 0 ANSI: 5
    ata1.00: Enabling discard_zeroes_data
    sd 0:0:0:0: [sda] 234441648 512-byte logical blocks: (120 GB/112 GiB)
    sd 0:0:0:0: [sda] Write Protect is off
    sd 0:0:0:0: [sda] Write cache: enabled, read cache:
                      enabled, doesn't support DPO or FUA
    ata1.00: Enabling discard_zeroes_data
    ata1.00: Enabling discard_zeroes_data
    sd 0:0:0:0: [sda] Attached SCSI disk
    
    After this I can flawlessly mount and read/write copy etc files
    from /dev/sda[n].
    
    Cc: John Feng-Hsin Chiang <john453@faraday-tech.com>
    Cc: Greentime Hu <green.hu@gmail.com>
    Acked-by: default avatarHans Ulli Kroll <ulli.kroll@googlemail.com>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    Acked-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    be4e456e
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