Skip to content

Commit

Permalink
libata: kill probe_ent and related helpers
Browse files Browse the repository at this point in the history 
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>
  • Loading branch information
Tejun Heo authored and Jeff Garzik committed Apr 28, 2007
1 parent 5d72882 commit 6bfff31
Show file tree
Hide file tree
Showing 4 changed files with 0 additions and 281 deletions.
153 changes: 0 additions & 153 deletions drivers/ata/libata-core.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -6132,131 +6132,6 @@ int ata_host_activate(struct ata_host *host, int irq,
return rc;
}

/**
* ata_device_add - Register hardware device with ATA and SCSI layers
* @ent: Probe information describing hardware device to be registered
*
* This function processes the information provided in the probe
* information struct @ent, allocates the necessary ATA and SCSI
* host information structures, initializes them, and registers
* everything with requisite kernel subsystems.
*
* This function requests irqs, probes the ATA bus, and probes
* the SCSI bus.
*
* LOCKING:
* PCI/etc. bus probe sem.
*
* RETURNS:
* Number of ports registered. Zero on error (no ports registered).
*/
int ata_device_add(const struct ata_probe_ent *ent)
{
unsigned int i;
struct device *dev = ent->dev;
struct ata_host *host;
int rc;

DPRINTK("ENTER\n");

if (ent->irq == 0) {
dev_printk(KERN_ERR, dev, "is not available: No interrupt assigned.\n");
return 0;
}

if (!ent->port_ops->error_handler &&
!(ent->port_flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST))) {
dev_printk(KERN_ERR, dev, "no reset mechanism available\n");
return 0;
}

if (!devres_open_group(dev, ata_device_add, GFP_KERNEL))
return 0;

/* allocate host */
host = ata_host_alloc(dev, ent->n_ports);

host->irq = ent->irq;
host->irq2 = ent->irq2;
host->iomap = ent->iomap;
host->private_data = ent->private_data;
host->ops = ent->port_ops;
host->flags = ent->_host_flags;

for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];

/* dummy? */
if (ent->dummy_port_mask & (1 << i)) {
ap->ops = &ata_dummy_port_ops;
continue;
}

if (ap->port_no == 1 && ent->pinfo2) {
ap->pio_mask = ent->pinfo2->pio_mask;
ap->mwdma_mask = ent->pinfo2->mwdma_mask;
ap->udma_mask = ent->pinfo2->udma_mask;
ap->flags |= ent->pinfo2->flags;
ap->ops = ent->pinfo2->port_ops;
} else {
ap->pio_mask = ent->pio_mask;
ap->mwdma_mask = ent->mwdma_mask;
ap->udma_mask = ent->udma_mask;
ap->flags |= ent->port_flags;
ap->ops = ent->port_ops;
}

memcpy(&ap->ioaddr, &ent->port[ap->port_no],
sizeof(struct ata_ioports));
}

/* start and freeze ports before requesting IRQ */
rc = ata_host_start(host);
if (rc)
goto err_out;

/* obtain irq, that may be shared between channels */
rc = devm_request_irq(dev, ent->irq, ent->port_ops->irq_handler,
ent->irq_flags, DRV_NAME, host);
if (rc) {
dev_printk(KERN_ERR, dev, "irq %lu request failed: %d\n",
ent->irq, rc);
goto err_out;
}

/* do we have a second IRQ for the other channel, eg legacy mode */
if (ent->irq2) {
/* We will get weird core code crashes later if this is true
so trap it now */
BUG_ON(ent->irq == ent->irq2);

rc = devm_request_irq(dev, ent->irq2,
ent->port_ops->irq_handler, ent->irq_flags,
DRV_NAME, host);
if (rc) {
dev_printk(KERN_ERR, dev, "irq %lu request failed: %d\n",
ent->irq2, rc);
goto err_out;
}
}

/* resource acquisition complete */
devres_remove_group(dev, ata_device_add);

/* register */
rc = ata_host_register(host, ent->sht);
if (rc)
goto err_out;

VPRINTK("EXIT, returning %u\n", host->n_ports);
return host->n_ports; /* success */

err_out:
devres_release_group(dev, ata_device_add);
VPRINTK("EXIT, returning 0\n");
return 0;
}

/**
* ata_port_detach - Detach ATA port in prepration of device removal
* @ap: ATA port to be detached
Expand Down Expand Up @@ -6332,32 +6207,6 @@ void ata_host_detach(struct ata_host *host)
ata_port_detach(host->ports[i]);
}

struct ata_probe_ent *
ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
{
struct ata_probe_ent *probe_ent;

probe_ent = devm_kzalloc(dev, sizeof(*probe_ent), GFP_KERNEL);
if (!probe_ent) {
printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
kobject_name(&(dev->kobj)));
return NULL;
}

INIT_LIST_HEAD(&probe_ent->node);
probe_ent->dev = dev;

probe_ent->sht = port->sht;
probe_ent->port_flags = port->flags;
probe_ent->pio_mask = port->pio_mask;
probe_ent->mwdma_mask = port->mwdma_mask;
probe_ent->udma_mask = port->udma_mask;
probe_ent->port_ops = port->port_ops;
probe_ent->private_data = port->private_data;

return probe_ent;
}

/**
* ata_std_ports - initialize ioaddr with standard port offsets.
* @ioaddr: IO address structure to be initialized
Expand Down Expand Up @@ -6647,7 +6496,6 @@ EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
EXPORT_SYMBOL_GPL(ata_host_start);
EXPORT_SYMBOL_GPL(ata_host_register);
EXPORT_SYMBOL_GPL(ata_host_activate);
EXPORT_SYMBOL_GPL(ata_device_add);
EXPORT_SYMBOL_GPL(ata_host_detach);
EXPORT_SYMBOL_GPL(ata_sg_init);
EXPORT_SYMBOL_GPL(ata_sg_init_one);
Expand Down Expand Up @@ -6730,7 +6578,6 @@ EXPORT_SYMBOL_GPL(ata_timing_merge);

#ifdef CONFIG_PCI
EXPORT_SYMBOL_GPL(pci_test_config_bits);
EXPORT_SYMBOL_GPL(ata_pci_init_native_mode);
EXPORT_SYMBOL_GPL(ata_pci_init_native_host);
EXPORT_SYMBOL_GPL(ata_pci_prepare_native_host);
EXPORT_SYMBOL_GPL(ata_pci_init_one);
Expand Down
95 changes: 0 additions & 95 deletions drivers/ata/libata-sff.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -532,101 +532,6 @@ static int ata_resources_present(struct pci_dev *pdev, int port)
return 1;
}

/**
* ata_pci_init_native_mode - Initialize native-mode driver
* @pdev: pci device to be initialized
* @port: array[2] of pointers to port info structures.
* @ports: bitmap of ports present
*
* Utility function which allocates and initializes an
* ata_probe_ent structure for a standard dual-port
* PIO-based IDE controller. The returned ata_probe_ent
* structure can be passed to ata_device_add(). The returned
* ata_probe_ent structure should then be freed with kfree().
*
* The caller need only pass the address of the primary port, the
* secondary will be deduced automatically. If the device has non
* standard secondary port mappings this function can be called twice,
* once for each interface.
*/

struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
{
struct ata_probe_ent *probe_ent;
int i;
void __iomem * const *iomap;

/* Discard disabled ports. Some controllers show their unused
* channels this way. Disabled ports will be made dummy.
*/
if (ata_resources_present(pdev, 0) == 0)
ports &= ~ATA_PORT_PRIMARY;
if (ata_resources_present(pdev, 1) == 0)
ports &= ~ATA_PORT_SECONDARY;

if (!ports) {
dev_printk(KERN_ERR, &pdev->dev, "no available port\n");
return NULL;
}

/* iomap BARs */
for (i = 0; i < 4; i++) {
if (!(ports & (1 << (i / 2))))
continue;
if (pcim_iomap(pdev, i, 0) == NULL) {
dev_printk(KERN_ERR, &pdev->dev,
"failed to iomap PCI BAR %d\n", i);
return NULL;
}
}

pcim_iomap(pdev, 4, 0); /* may fail */
iomap = pcim_iomap_table(pdev);

/* alloc and init probe_ent */
probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
if (!probe_ent)
return NULL;

probe_ent->n_ports = 2;
probe_ent->irq = pdev->irq;
probe_ent->irq_flags = IRQF_SHARED;

if (ports & ATA_PORT_PRIMARY) {
probe_ent->port[0].cmd_addr = iomap[0];
probe_ent->port[0].altstatus_addr =
probe_ent->port[0].ctl_addr = (void __iomem *)
((unsigned long)iomap[1] | ATA_PCI_CTL_OFS);
if (iomap[4]) {
if ((!(port[0]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
(ioread8(iomap[4] + 2) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[0].bmdma_addr = iomap[4];
}
ata_std_ports(&probe_ent->port[0]);
} else
probe_ent->dummy_port_mask |= ATA_PORT_PRIMARY;

if (ports & ATA_PORT_SECONDARY) {
probe_ent->port[1].cmd_addr = iomap[2];
probe_ent->port[1].altstatus_addr =
probe_ent->port[1].ctl_addr = (void __iomem *)
((unsigned long)iomap[3] | ATA_PCI_CTL_OFS);
if (iomap[4]) {
if ((!(port[1]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
(ioread8(iomap[4] + 10) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[1].bmdma_addr = iomap[4] + 8;
}
ata_std_ports(&probe_ent->port[1]);
probe_ent->pinfo2 = port[1];
} else
probe_ent->dummy_port_mask |= ATA_PORT_SECONDARY;

return probe_ent;
}

/**
* ata_pci_init_bmdma - acquire PCI BMDMA resources and init ATA host
* @host: target ATA host
Expand Down
2 changes: 0 additions & 2 deletions drivers/ata/libata.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -93,8 +93,6 @@ extern int ata_flush_cache(struct ata_device *dev);
extern void ata_dev_init(struct ata_device *dev);
extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
const struct ata_port_info *port);
extern struct ata_port *ata_port_alloc(struct ata_host *host);

/* libata-acpi.c */
Expand Down
31 changes: 0 additions & 31 deletions include/linux/libata.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -368,34 +368,6 @@ struct ata_ioports {
void __iomem *scr_addr;
};

struct ata_probe_ent {
struct list_head node;
struct device *dev;
const struct ata_port_operations *port_ops;
struct scsi_host_template *sht;
struct ata_ioports port[ATA_MAX_PORTS];
unsigned int n_ports;
unsigned int dummy_port_mask;
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned long irq;
unsigned long irq2;
unsigned int irq_flags;
unsigned long port_flags;
unsigned long _host_flags;
void __iomem * const *iomap;
void *private_data;

/* port_info for the secondary port. Together with irq2, it's
* used to implement non-uniform secondary port. Currently,
* the only user is ata_piix combined mode. This workaround
* will be removed together with ata_probe_ent when init model
* is updated.
*/
const struct ata_port_info *pinfo2;
};

struct ata_host {
spinlock_t lock;
struct device *dev;
Expand Down Expand Up @@ -744,7 +716,6 @@ extern int ata_host_register(struct ata_host *host,
extern int ata_host_activate(struct ata_host *host, int irq,
irq_handler_t irq_handler, unsigned long irq_flags,
struct scsi_host_template *sht);
extern int ata_device_add(const struct ata_probe_ent *ent);
extern void ata_host_detach(struct ata_host *host);
extern void ata_host_init(struct ata_host *, struct device *,
unsigned long, const struct ata_port_operations *);
Expand Down Expand Up @@ -892,8 +863,6 @@ struct pci_bits {
unsigned long val;
};

extern struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask);
extern int ata_pci_init_native_host(struct ata_host *host,
unsigned int port_mask);
extern int ata_pci_prepare_native_host(struct pci_dev *pdev,
Expand Down

0 comments on commit 6bfff31

Please sign in to comment.