MFC r200353:
Limit maximum I/O size, depending on command set supported by device. It is required to suppot non-LBA48 devices with MAXPHYS above 128K. Same is done in ada(4).
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/stable/8/; revision=200409
@ -126,6 +126,10 @@ ad_attach(device_t dev)
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adp->disk->d_name = "ad";
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adp->disk->d_name = "ad";
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adp->disk->d_drv1 = dev;
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adp->disk->d_drv1 = dev;
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adp->disk->d_maxsize = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
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adp->disk->d_maxsize = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
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if (atadev->param.support.command2 & ATA_SUPPORT_ADDRESS48)
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adp->disk->d_maxsize = min(adp->disk->d_maxsize, 65536 * DEV_BSIZE);
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else /* 28bit ATA command limit */
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adp->disk->d_maxsize = min(adp->disk->d_maxsize, 256 * DEV_BSIZE);
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adp->disk->d_sectorsize = DEV_BSIZE;
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adp->disk->d_sectorsize = DEV_BSIZE;
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adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
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adp->disk->d_mediasize = DEV_BSIZE * (off_t)adp->total_secs;
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adp->disk->d_fwsectors = adp->sectors;
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adp->disk->d_fwsectors = adp->sectors;
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