linux-kernel - Re: [PATCH 6/7] RISC-V: arch/riscv/kernel

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Date:   Tue, 6 Jun 2017 11:01:23 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Palmer Dabbelt <palmer@...belt.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Olof Johansson <olof@...om.net>, albert@...ive.com
Subject: Re: [PATCH 6/7] RISC-V: arch/riscv/kernel

On Sat, Jun 3, 2017 at 1:56 AM, Palmer Dabbelt <palmer@...belt.com> wrote:
> On Tue, 23 May 2017 06:35:23 PDT (-0700), Arnd Bergmann wrote:
>>> +IRQCHIP_DECLARE(riscv, "riscv,cpu-intc", riscv_intc_init);
>> If you don't care about LPC/ISA devices, then your PCI_MIN_IO
>> should also be zero instead of 0x1000
>
> Sorry, but the only Google results for PCI_MIN_IO is this email.  There don't
> appear to be any relevant references to PCI_MIN in the kernel
>
>   $ git grep PCI_MIN_
>   arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h:      ((PCI_MAX_LATENCY << 24) | (PCI_MIN_GRANT << 16) | \
>   arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h:#define PCI_MIN_GRANT                 0x00
>   drivers/ata/pata_hpt366.c:      pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
>   drivers/ata/pata_hpt37x.c:      pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
>   drivers/ata/pata_hpt3x2n.c:     pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
>   drivers/ide/hpt366.c:   pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
>   drivers/net/fddi/skfp/h/skfbi.h:#define PCI_MIN_GNT     0x3e    /*  8 bit       Min_Gnt */
>   drivers/net/fddi/skfp/h/skfbi.h:/*      PCI_MIN_GNT     8 bit   Min_Gnt */
>   include/uapi/linux/pci_regs.h:#define PCI_MIN_GNT               0x3e    /* 8 bits */
>
> I'm afraid that I'm not sure what to do here.

Sorry, I meant PCIBIOS_MIN_IO

       Arnd