ata: Report 16/32bit PIO as best we can
The legacy old IDE ioctl API for this is a bit primitive so we try and map stuff sensibly onto it. - Set PIO over DMA devices to report 32bit - Add ability to change the PIO32 settings if the controller permits it - Add that functionality into the sff drivers - Add that functionality into the VLB legacy driver - Turn on the 32bit PIO on the ninja32 and add support there Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>hifive-unleashed-5.1
Alan Cox
Jeff Garzik
parent
62afe5d744
commit
e3cf95dd6d
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@ -647,23 +647,45 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
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return rc;
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}
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static int ata_ioc32(struct ata_port *ap)
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{
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if (ap->flags & ATA_FLAG_PIO_DMA)
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return 1;
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if (ap->pflags & ATA_PFLAG_PIO32)
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return 1;
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return 0;
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}
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int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
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int cmd, void __user *arg)
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{
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int val = -EINVAL, rc = -EINVAL;
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unsigned long flags;
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switch (cmd) {
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case ATA_IOC_GET_IO32:
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val = 0;
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spin_lock_irqsave(ap->lock, flags);
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val = ata_ioc32(ap);
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spin_unlock_irqrestore(ap->lock, flags);
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if (copy_to_user(arg, &val, 1))
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return -EFAULT;
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return 0;
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case ATA_IOC_SET_IO32:
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val = (unsigned long) arg;
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if (val != 0)
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return -EINVAL;
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return 0;
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rc = 0;
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spin_lock_irqsave(ap->lock, flags);
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if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
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if (val)
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ap->pflags |= ATA_PFLAG_PIO32;
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else
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ap->pflags &= ~ATA_PFLAG_PIO32;
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} else {
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if (val != ata_ioc32(ap))
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rc = -EINVAL;
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}
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spin_unlock_irqrestore(ap->lock, flags);
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return rc;
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case HDIO_GET_IDENTITY:
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return ata_get_identity(ap, scsidev, arg);
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@ -87,6 +87,7 @@ const struct ata_port_operations ata_bmdma32_port_ops = {
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.inherits = &ata_bmdma_port_ops,
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.sff_data_xfer = ata_sff_data_xfer32,
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.port_start = ata_sff_port_start32,
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};
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EXPORT_SYMBOL_GPL(ata_bmdma32_port_ops);
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@ -769,6 +770,9 @@ unsigned int ata_sff_data_xfer32(struct ata_device *dev, unsigned char *buf,
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void __iomem *data_addr = ap->ioaddr.data_addr;
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unsigned int words = buflen >> 2;
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int slop = buflen & 3;
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if (!(ap->pflags & ATA_PFLAG_PIO32))
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return ata_sff_data_xfer(dev, buf, buflen, rw);
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/* Transfer multiple of 4 bytes */
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if (rw == READ)
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@ -2401,6 +2405,29 @@ int ata_sff_port_start(struct ata_port *ap)
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}
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EXPORT_SYMBOL_GPL(ata_sff_port_start);
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/**
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* ata_sff_port_start32 - Set port up for dma.
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* @ap: Port to initialize
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*
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* Called just after data structures for each port are
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* initialized. Allocates space for PRD table if the device
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* is DMA capable SFF.
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*
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* May be used as the port_start() entry in ata_port_operations for
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* devices that are capable of 32bit PIO.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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int ata_sff_port_start32(struct ata_port *ap)
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{
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ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
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if (ap->ioaddr.bmdma_addr)
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return ata_port_start(ap);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ata_sff_port_start32);
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/**
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* ata_sff_std_ports - initialize ioaddr with standard port offsets.
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* @ioaddr: IO address structure to be initialized
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@ -108,6 +108,7 @@ struct legacy_controller {
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struct ata_port_operations *ops;
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unsigned int pio_mask;
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unsigned int flags;
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unsigned int pflags;
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int (*setup)(struct platform_device *, struct legacy_probe *probe,
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struct legacy_data *data);
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};
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@ -285,7 +286,8 @@ static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
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{
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int slop = buflen & 3;
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/* 32bit I/O capable *and* we need to write a whole number of dwords */
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if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)) {
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if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
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&& (ap->pflags & ATA_PFLAG_PIO32)) {
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struct ata_port *ap = dev->link->ap;
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unsigned long flags;
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@ -736,7 +738,8 @@ static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
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struct ata_port *ap = adev->link->ap;
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int slop = buflen & 3;
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if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)) {
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if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
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&& (ap->pflags & ATA_PFLAG_PIO32)) {
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if (rw == WRITE)
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iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
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else
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@ -858,27 +861,30 @@ static struct ata_port_operations winbond_port_ops = {
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static struct legacy_controller controllers[] = {
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{"BIOS", &legacy_port_ops, 0x1F,
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ATA_FLAG_NO_IORDY, NULL },
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ATA_FLAG_NO_IORDY, 0, NULL },
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{"Snooping", &simple_port_ops, 0x1F,
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0 , NULL },
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0, 0, NULL },
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{"PDC20230", &pdc20230_port_ops, 0x7,
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ATA_FLAG_NO_IORDY, NULL },
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ATA_FLAG_NO_IORDY,
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ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, NULL },
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{"HT6560A", &ht6560a_port_ops, 0x07,
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ATA_FLAG_NO_IORDY, NULL },
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ATA_FLAG_NO_IORDY, 0, NULL },
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{"HT6560B", &ht6560b_port_ops, 0x1F,
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ATA_FLAG_NO_IORDY, NULL },
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ATA_FLAG_NO_IORDY, 0, NULL },
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{"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
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0 , NULL },
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0, 0, NULL },
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{"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
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0 , NULL },
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0, 0, NULL },
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{"QDI6500", &qdi6500_port_ops, 0x07,
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ATA_FLAG_NO_IORDY, qdi_port },
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ATA_FLAG_NO_IORDY,
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ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
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{"QDI6580", &qdi6580_port_ops, 0x1F,
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0 , qdi_port },
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0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
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{"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
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0 , qdi_port },
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0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
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{"W83759A", &winbond_port_ops, 0x1F,
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0 , winbond_port }
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0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE,
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winbond_port }
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};
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/**
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@ -1008,6 +1014,7 @@ static __init int legacy_init_one(struct legacy_probe *probe)
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ap->ops = ops;
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ap->pio_mask = pio_modes;
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ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
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ap->pflags |= controller->pflags;
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ap->ioaddr.cmd_addr = io_addr;
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ap->ioaddr.altstatus_addr = ctrl_addr;
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ap->ioaddr.ctl_addr = ctrl_addr;
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@ -44,7 +44,7 @@
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#include <linux/libata.h>
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#define DRV_NAME "pata_ninja32"
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#define DRV_VERSION "0.1.3"
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#define DRV_VERSION "0.1.5"
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/**
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@ -86,6 +86,7 @@ static struct ata_port_operations ninja32_port_ops = {
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.sff_dev_select = ninja32_dev_select,
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.cable_detect = ata_cable_40wire,
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.set_piomode = ninja32_set_piomode,
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.sff_data_xfer = ata_sff_data_xfer32
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};
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static void ninja32_program(void __iomem *base)
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@ -144,6 +145,7 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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ap->ioaddr.altstatus_addr = base + 0x1E;
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ap->ioaddr.bmdma_addr = base;
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ata_sff_std_ports(&ap->ioaddr);
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ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
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ninja32_program(base);
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/* FIXME: Should we disable them at remove ? */
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@ -209,6 +209,7 @@ enum {
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/* bits 24:31 of ap->flags are reserved for LLD specific flags */
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/* struct ata_port pflags */
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ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
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ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
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@ -225,6 +226,9 @@ enum {
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ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
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ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
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ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
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ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
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/* struct ata_queued_cmd flags */
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ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
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ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
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@ -689,7 +693,10 @@ struct ata_port {
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struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
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struct ata_port_operations *ops;
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spinlock_t *lock;
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/* Flags owned by the EH context. Only EH should touch these once the
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port is active */
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unsigned long flags; /* ATA_FLAG_xxx */
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/* Flags that change dynamically, protected by ap->lock */
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unsigned int pflags; /* ATA_PFLAG_xxx */
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unsigned int print_id; /* user visible unique port ID */
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unsigned int port_no; /* 0 based port no. inside the host */
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@ -1595,6 +1602,7 @@ extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
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extern void ata_sff_error_handler(struct ata_port *ap);
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extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
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extern int ata_sff_port_start(struct ata_port *ap);
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extern int ata_sff_port_start32(struct ata_port *ap);
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extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
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extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev,
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unsigned long xfer_mask);
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