Re: [Qemu-devel] Small issue in the IDE emulation

[Samuel Thibault <samuel.thibault@ens-lyon.org>]

Vincent Sanders, le Sat 04 Oct 2008 12:10:02 +0100, a écrit :
> While doing some other work I have come across a small issue with the
> DIAGNOSE command in the qemu IDE implementation. The status register
> value is dependant on the drive being a packet device or not. The
> simple patch (attached) fixes this.
> 
> === modified file 'hw/ide.c'
> --- hw/ide.c	2008-10-01 01:43:16 +0000
> +++ hw/ide.c	2008-10-04 10:56:58 +0000
> @@ -2308,8 +2308,15 @@
>              break;
>          case WIN_DIAGNOSE:
>              ide_set_signature(s);
> -            s->status = READY_STAT | SEEK_STAT;
> -            s->error = 0x01;
> +            if (s->is_cdrom)
> +                s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
> +                                * devices to return a clear status register
> +                                * with READY_STAT *not* set. */

But shouldn't we at least set SEEK_STAT?

Samuel