libata: kill probe_ent and related helpers
All drivers are converted to new init model. Kill probe_ent, ata_device_add() and ata_pci_init_native_mode(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
Jeff Garzik
Родитель
5d728824ef
Коммит
6bfff31e77
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@ -6132,131 +6132,6 @@ int ata_host_activate(struct ata_host *host, int irq,
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return rc;
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}
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/**
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* ata_device_add - Register hardware device with ATA and SCSI layers
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* @ent: Probe information describing hardware device to be registered
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*
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* This function processes the information provided in the probe
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* information struct @ent, allocates the necessary ATA and SCSI
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* host information structures, initializes them, and registers
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* everything with requisite kernel subsystems.
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*
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* This function requests irqs, probes the ATA bus, and probes
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* the SCSI bus.
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*
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* LOCKING:
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* PCI/etc. bus probe sem.
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*
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* RETURNS:
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* Number of ports registered. Zero on error (no ports registered).
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*/
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int ata_device_add(const struct ata_probe_ent *ent)
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{
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unsigned int i;
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struct device *dev = ent->dev;
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struct ata_host *host;
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int rc;
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DPRINTK("ENTER\n");
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if (ent->irq == 0) {
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dev_printk(KERN_ERR, dev, "is not available: No interrupt assigned.\n");
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return 0;
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}
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if (!ent->port_ops->error_handler &&
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!(ent->port_flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST))) {
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dev_printk(KERN_ERR, dev, "no reset mechanism available\n");
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return 0;
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}
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if (!devres_open_group(dev, ata_device_add, GFP_KERNEL))
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return 0;
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/* allocate host */
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host = ata_host_alloc(dev, ent->n_ports);
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host->irq = ent->irq;
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host->irq2 = ent->irq2;
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host->iomap = ent->iomap;
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host->private_data = ent->private_data;
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host->ops = ent->port_ops;
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host->flags = ent->_host_flags;
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for (i = 0; i < host->n_ports; i++) {
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struct ata_port *ap = host->ports[i];
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/* dummy? */
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if (ent->dummy_port_mask & (1 << i)) {
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ap->ops = &ata_dummy_port_ops;
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continue;
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}
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if (ap->port_no == 1 && ent->pinfo2) {
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ap->pio_mask = ent->pinfo2->pio_mask;
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ap->mwdma_mask = ent->pinfo2->mwdma_mask;
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ap->udma_mask = ent->pinfo2->udma_mask;
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ap->flags |= ent->pinfo2->flags;
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ap->ops = ent->pinfo2->port_ops;
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} else {
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ap->pio_mask = ent->pio_mask;
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ap->mwdma_mask = ent->mwdma_mask;
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ap->udma_mask = ent->udma_mask;
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ap->flags |= ent->port_flags;
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ap->ops = ent->port_ops;
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}
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memcpy(&ap->ioaddr, &ent->port[ap->port_no],
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sizeof(struct ata_ioports));
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}
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/* start and freeze ports before requesting IRQ */
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rc = ata_host_start(host);
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if (rc)
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goto err_out;
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/* obtain irq, that may be shared between channels */
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rc = devm_request_irq(dev, ent->irq, ent->port_ops->irq_handler,
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ent->irq_flags, DRV_NAME, host);
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if (rc) {
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dev_printk(KERN_ERR, dev, "irq %lu request failed: %d\n",
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ent->irq, rc);
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goto err_out;
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}
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/* do we have a second IRQ for the other channel, eg legacy mode */
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if (ent->irq2) {
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/* We will get weird core code crashes later if this is true
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so trap it now */
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BUG_ON(ent->irq == ent->irq2);
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rc = devm_request_irq(dev, ent->irq2,
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ent->port_ops->irq_handler, ent->irq_flags,
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DRV_NAME, host);
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if (rc) {
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dev_printk(KERN_ERR, dev, "irq %lu request failed: %d\n",
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ent->irq2, rc);
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goto err_out;
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}
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}
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/* resource acquisition complete */
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devres_remove_group(dev, ata_device_add);
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/* register */
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rc = ata_host_register(host, ent->sht);
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if (rc)
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goto err_out;
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VPRINTK("EXIT, returning %u\n", host->n_ports);
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return host->n_ports; /* success */
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err_out:
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devres_release_group(dev, ata_device_add);
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VPRINTK("EXIT, returning 0\n");
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return 0;
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}
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/**
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* ata_port_detach - Detach ATA port in prepration of device removal
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* @ap: ATA port to be detached
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@ -6332,32 +6207,6 @@ void ata_host_detach(struct ata_host *host)
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ata_port_detach(host->ports[i]);
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}
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struct ata_probe_ent *
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ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
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{
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struct ata_probe_ent *probe_ent;
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probe_ent = devm_kzalloc(dev, sizeof(*probe_ent), GFP_KERNEL);
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if (!probe_ent) {
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printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
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kobject_name(&(dev->kobj)));
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return NULL;
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}
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INIT_LIST_HEAD(&probe_ent->node);
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probe_ent->dev = dev;
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probe_ent->sht = port->sht;
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probe_ent->port_flags = port->flags;
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probe_ent->pio_mask = port->pio_mask;
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probe_ent->mwdma_mask = port->mwdma_mask;
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probe_ent->udma_mask = port->udma_mask;
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probe_ent->port_ops = port->port_ops;
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probe_ent->private_data = port->private_data;
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return probe_ent;
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}
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/**
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* ata_std_ports - initialize ioaddr with standard port offsets.
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* @ioaddr: IO address structure to be initialized
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@ -6647,7 +6496,6 @@ EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
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EXPORT_SYMBOL_GPL(ata_host_start);
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EXPORT_SYMBOL_GPL(ata_host_register);
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EXPORT_SYMBOL_GPL(ata_host_activate);
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EXPORT_SYMBOL_GPL(ata_device_add);
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EXPORT_SYMBOL_GPL(ata_host_detach);
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EXPORT_SYMBOL_GPL(ata_sg_init);
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EXPORT_SYMBOL_GPL(ata_sg_init_one);
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@ -6730,7 +6578,6 @@ EXPORT_SYMBOL_GPL(ata_timing_merge);
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#ifdef CONFIG_PCI
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EXPORT_SYMBOL_GPL(pci_test_config_bits);
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EXPORT_SYMBOL_GPL(ata_pci_init_native_mode);
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EXPORT_SYMBOL_GPL(ata_pci_init_native_host);
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EXPORT_SYMBOL_GPL(ata_pci_prepare_native_host);
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EXPORT_SYMBOL_GPL(ata_pci_init_one);
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@ -532,101 +532,6 @@ static int ata_resources_present(struct pci_dev *pdev, int port)
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return 1;
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}
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/**
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* ata_pci_init_native_mode - Initialize native-mode driver
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* @pdev: pci device to be initialized
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* @port: array[2] of pointers to port info structures.
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* @ports: bitmap of ports present
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*
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* Utility function which allocates and initializes an
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* ata_probe_ent structure for a standard dual-port
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* PIO-based IDE controller. The returned ata_probe_ent
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* structure can be passed to ata_device_add(). The returned
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* ata_probe_ent structure should then be freed with kfree().
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*
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* The caller need only pass the address of the primary port, the
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* secondary will be deduced automatically. If the device has non
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* standard secondary port mappings this function can be called twice,
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* once for each interface.
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*/
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struct ata_probe_ent *
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ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
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{
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struct ata_probe_ent *probe_ent;
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int i;
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void __iomem * const *iomap;
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/* Discard disabled ports. Some controllers show their unused
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* channels this way. Disabled ports will be made dummy.
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*/
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if (ata_resources_present(pdev, 0) == 0)
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ports &= ~ATA_PORT_PRIMARY;
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if (ata_resources_present(pdev, 1) == 0)
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ports &= ~ATA_PORT_SECONDARY;
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if (!ports) {
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dev_printk(KERN_ERR, &pdev->dev, "no available port\n");
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return NULL;
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}
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/* iomap BARs */
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for (i = 0; i < 4; i++) {
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if (!(ports & (1 << (i / 2))))
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continue;
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if (pcim_iomap(pdev, i, 0) == NULL) {
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dev_printk(KERN_ERR, &pdev->dev,
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"failed to iomap PCI BAR %d\n", i);
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return NULL;
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}
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}
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pcim_iomap(pdev, 4, 0); /* may fail */
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iomap = pcim_iomap_table(pdev);
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/* alloc and init probe_ent */
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probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
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if (!probe_ent)
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return NULL;
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probe_ent->n_ports = 2;
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probe_ent->irq = pdev->irq;
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probe_ent->irq_flags = IRQF_SHARED;
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if (ports & ATA_PORT_PRIMARY) {
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probe_ent->port[0].cmd_addr = iomap[0];
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probe_ent->port[0].altstatus_addr =
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probe_ent->port[0].ctl_addr = (void __iomem *)
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((unsigned long)iomap[1] | ATA_PCI_CTL_OFS);
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if (iomap[4]) {
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if ((!(port[0]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
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(ioread8(iomap[4] + 2) & 0x80))
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probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
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probe_ent->port[0].bmdma_addr = iomap[4];
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}
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ata_std_ports(&probe_ent->port[0]);
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} else
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probe_ent->dummy_port_mask |= ATA_PORT_PRIMARY;
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if (ports & ATA_PORT_SECONDARY) {
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probe_ent->port[1].cmd_addr = iomap[2];
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probe_ent->port[1].altstatus_addr =
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probe_ent->port[1].ctl_addr = (void __iomem *)
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((unsigned long)iomap[3] | ATA_PCI_CTL_OFS);
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if (iomap[4]) {
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if ((!(port[1]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
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(ioread8(iomap[4] + 10) & 0x80))
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probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
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probe_ent->port[1].bmdma_addr = iomap[4] + 8;
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}
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ata_std_ports(&probe_ent->port[1]);
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probe_ent->pinfo2 = port[1];
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} else
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probe_ent->dummy_port_mask |= ATA_PORT_SECONDARY;
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return probe_ent;
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}
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/**
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* ata_pci_init_bmdma - acquire PCI BMDMA resources and init ATA host
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* @host: target ATA host
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@ -93,8 +93,6 @@ extern int ata_flush_cache(struct ata_device *dev);
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extern void ata_dev_init(struct ata_device *dev);
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extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
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extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
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extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
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const struct ata_port_info *port);
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extern struct ata_port *ata_port_alloc(struct ata_host *host);
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/* libata-acpi.c */
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@ -368,34 +368,6 @@ struct ata_ioports {
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void __iomem *scr_addr;
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};
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struct ata_probe_ent {
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struct list_head node;
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struct device *dev;
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const struct ata_port_operations *port_ops;
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struct scsi_host_template *sht;
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struct ata_ioports port[ATA_MAX_PORTS];
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unsigned int n_ports;
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unsigned int dummy_port_mask;
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unsigned int pio_mask;
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unsigned int mwdma_mask;
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unsigned int udma_mask;
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unsigned long irq;
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unsigned long irq2;
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unsigned int irq_flags;
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unsigned long port_flags;
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unsigned long _host_flags;
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void __iomem * const *iomap;
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void *private_data;
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/* port_info for the secondary port. Together with irq2, it's
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* used to implement non-uniform secondary port. Currently,
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* the only user is ata_piix combined mode. This workaround
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* will be removed together with ata_probe_ent when init model
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* is updated.
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*/
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const struct ata_port_info *pinfo2;
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};
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struct ata_host {
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spinlock_t lock;
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struct device *dev;
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@ -744,7 +716,6 @@ extern int ata_host_register(struct ata_host *host,
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extern int ata_host_activate(struct ata_host *host, int irq,
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irq_handler_t irq_handler, unsigned long irq_flags,
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struct scsi_host_template *sht);
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extern int ata_device_add(const struct ata_probe_ent *ent);
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extern void ata_host_detach(struct ata_host *host);
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extern void ata_host_init(struct ata_host *, struct device *,
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unsigned long, const struct ata_port_operations *);
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@ -892,8 +863,6 @@ struct pci_bits {
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unsigned long val;
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};
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extern struct ata_probe_ent *
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ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask);
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extern int ata_pci_init_native_host(struct ata_host *host,
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unsigned int port_mask);
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extern int ata_pci_prepare_native_host(struct pci_dev *pdev,
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