.id_table = piix_pci_tbl,
.probe = piix_init_one,
.remove = ata_pci_remove_one,
+ .suspend = ata_pci_device_suspend,
+ .resume = ata_pci_device_resume,
};
static struct scsi_host_template piix_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
+ .resume = ata_scsi_device_resume,
+ .suspend = ata_scsi_device_suspend,
};
static const struct ata_port_operations piix_pata_ops = {
return rc;
}
+/**
+ * piix_check_450nx_errata - Check for problem 450NX setup
+ *
+ * Check for the present of 450NX errata #19 and errata #25. If
+ * they are found return an error code so we can turn off DMA
+ */
+
+static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
+{
+ struct pci_dev *pdev = NULL;
+ u16 cfg;
+ u8 rev;
+ int no_piix_dma = 0;
+
+ while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
+ {
+ /* Look for 450NX PXB. Check for problem configurations
+ A PCI quirk checks bit 6 already */
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
+ pci_read_config_word(pdev, 0x41, &cfg);
+ /* Only on the original revision: IDE DMA can hang */
+ if(rev == 0x00)
+ no_piix_dma = 1;
+ /* On all revisions below 5 PXB bus lock must be disabled for IDE */
+ else if(cfg & (1<<14) && rev < 5)
+ no_piix_dma = 2;
+ }
+ if(no_piix_dma)
+ dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
+ if(no_piix_dma == 2)
+ dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
+ return no_piix_dma;
+}
+
/**
* piix_init_one - Register PIIX ATA PCI device with kernel services
* @pdev: PCI device to register
"combined mode detected (p=%u, s=%u)\n",
pata_chan, sata_chan);
}
-
+ if (piix_check_450nx_errata(pdev)) {
+ /* This writes into the master table but it does not
+ really matter for this errata as we will apply it to
+ all the PIIX devices on the board */
+ port_info[0]->mwdma_mask = 0;
+ port_info[0]->udma_mask = 0;
+ port_info[1]->mwdma_mask = 0;
+ port_info[1]->udma_mask = 0;
+ }
return ata_pci_init_one(pdev, port_info, 2);
}