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Commit 0fe40ff8 authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
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libata: clean up the SFF code for coding style 

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 871af121
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Showing with 67 additions and 65 deletions
drivers/ata/libata-sff.c
View file @ 0fe40ff8
......@@ -66,6 +66,7 @@ const struct ata_port_operations ata_sff_port_ops = {
.port_start = ata_sff_port_start,
};
EXPORT_SYMBOL_GPL(ata_sff_port_ops);
const struct ata_port_operations ata_bmdma_port_ops = {
.inherits = &ata_sff_port_ops,
......@@ -77,6 +78,7 @@ const struct ata_port_operations ata_bmdma_port_ops = {
.bmdma_stop = ata_bmdma_stop,
.bmdma_status = ata_bmdma_status,
};
EXPORT_SYMBOL_GPL(ata_bmdma_port_ops);
const struct ata_port_operations ata_bmdma32_port_ops = {
.inherits = &ata_bmdma_port_ops,
......@@ -173,8 +175,9 @@ static void ata_fill_sg_dumb(struct ata_queued_cmd *qc)
blen = len & 0xffff;
ap->prd[pi].addr = cpu_to_le32(addr);
if (blen == 0) {
/* Some PATA chipsets like the CS5530 can't
cope with 0x0000 meaning 64K as the spec says */
/* Some PATA chipsets like the CS5530 can't
cope with 0x0000 meaning 64K as the spec
says */
ap->prd[pi].flags_len = cpu_to_le32(0x8000);
blen = 0x8000;
ap->prd[++pi].addr = cpu_to_le32(addr + 0x8000);
......@@ -207,6 +210,7 @@ void ata_sff_qc_prep(struct ata_queued_cmd *qc)
ata_fill_sg(qc);
}
EXPORT_SYMBOL_GPL(ata_sff_qc_prep);
/**
* ata_sff_dumb_qc_prep - Prepare taskfile for submission
......@@ -224,6 +228,7 @@ void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc)
ata_fill_sg_dumb(qc);
}
EXPORT_SYMBOL_GPL(ata_sff_dumb_qc_prep);
/**
* ata_sff_check_status - Read device status reg & clear interrupt
......@@ -240,6 +245,7 @@ u8 ata_sff_check_status(struct ata_port *ap)
{
return ioread8(ap->ioaddr.status_addr);
}
EXPORT_SYMBOL_GPL(ata_sff_check_status);
/**
* ata_sff_altstatus - Read device alternate status reg
......@@ -282,7 +288,7 @@ static u8 ata_sff_irq_status(struct ata_port *ap)
status = ata_sff_altstatus(ap);
/* Not us: We are busy */
if (status & ATA_BUSY)
return status;
return status;
}
/* Clear INTRQ latch */
status = ap->ops->sff_check_status(ap);
......@@ -326,6 +332,7 @@ void ata_sff_pause(struct ata_port *ap)
ata_sff_sync(ap);
ndelay(400);
}
EXPORT_SYMBOL_GPL(ata_sff_pause);
/**
* ata_sff_dma_pause - Pause before commencing DMA
......@@ -334,7 +341,7 @@ void ata_sff_pause(struct ata_port *ap)
* Perform I/O fencing and ensure sufficient cycle delays occur
* for the HDMA1:0 transition
*/
void ata_sff_dma_pause(struct ata_port *ap)
{
if (ap->ops->sff_check_altstatus || ap->ioaddr.altstatus_addr) {
......@@ -348,6 +355,7 @@ void ata_sff_dma_pause(struct ata_port *ap)
corruption. */
BUG();
}
EXPORT_SYMBOL_GPL(ata_sff_dma_pause);
/**
* ata_sff_busy_sleep - sleep until BSY clears, or timeout
......@@ -403,6 +411,7 @@ int ata_sff_busy_sleep(struct ata_port *ap,
return 0;
}
EXPORT_SYMBOL_GPL(ata_sff_busy_sleep);
static int ata_sff_check_ready(struct ata_link *link)
{
......@@ -429,6 +438,7 @@ int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline)
{
return ata_wait_ready(link, deadline, ata_sff_check_ready);
}
EXPORT_SYMBOL_GPL(ata_sff_wait_ready);
/**
* ata_sff_dev_select - Select device 0/1 on ATA bus
......@@ -456,6 +466,7 @@ void ata_sff_dev_select(struct ata_port *ap, unsigned int device)
iowrite8(tmp, ap->ioaddr.device_addr);
ata_sff_pause(ap); /* needed; also flushes, for mmio */
}
EXPORT_SYMBOL_GPL(ata_sff_dev_select);
/**
* ata_dev_select - Select device 0/1 on ATA bus
......@@ -520,6 +531,7 @@ u8 ata_sff_irq_on(struct ata_port *ap)
return tmp;
}
EXPORT_SYMBOL_GPL(ata_sff_irq_on);
/**
* ata_sff_irq_clear - Clear PCI IDE BMDMA interrupt.
......@@ -541,6 +553,7 @@ void ata_sff_irq_clear(struct ata_port *ap)
iowrite8(ioread8(mmio + ATA_DMA_STATUS), mmio + ATA_DMA_STATUS);
}
EXPORT_SYMBOL_GPL(ata_sff_irq_clear);
/**
* ata_sff_tf_load - send taskfile registers to host controller
......@@ -600,6 +613,7 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
ata_wait_idle(ap);
}
EXPORT_SYMBOL_GPL(ata_sff_tf_load);
/**
* ata_sff_tf_read - input device's ATA taskfile shadow registers
......@@ -640,6 +654,7 @@ void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
WARN_ON(1);
}
}
EXPORT_SYMBOL_GPL(ata_sff_tf_read);
/**
* ata_sff_exec_command - issue ATA command to host controller
......@@ -659,6 +674,7 @@ void ata_sff_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
iowrite8(tf->command, ap->ioaddr.command_addr);
ata_sff_pause(ap);
}
EXPORT_SYMBOL_GPL(ata_sff_exec_command);
/**
* ata_tf_to_host - issue ATA taskfile to host controller
......@@ -724,6 +740,7 @@ unsigned int ata_sff_data_xfer(struct ata_device *dev, unsigned char *buf,
return words << 1;
}
EXPORT_SYMBOL_GPL(ata_sff_data_xfer);
/**
* ata_sff_data_xfer32 - Transfer data by PIO
......@@ -799,6 +816,7 @@ unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev, unsigned char *buf,
return consumed;
}
EXPORT_SYMBOL_GPL(ata_sff_data_xfer_noirq);
/**
* ata_pio_sector - Transfer a sector of data.
......@@ -975,13 +993,15 @@ next_sg:
buf = kmap_atomic(page, KM_IRQ0);
/* do the actual data transfer */
consumed = ap->ops->sff_data_xfer(dev, buf + offset, count, rw);
consumed = ap->ops->sff_data_xfer(dev, buf + offset,
count, rw);
kunmap_atomic(buf, KM_IRQ0);
local_irq_restore(flags);
} else {
buf = page_address(page);
consumed = ap->ops->sff_data_xfer(dev, buf + offset, count, rw);
consumed = ap->ops->sff_data_xfer(dev, buf + offset,
count, rw);
}
bytes -= min(bytes, consumed);
......@@ -1066,18 +1086,19 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
* RETURNS:
* 1 if ok in workqueue, 0 otherwise.
*/
static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *qc)
static inline int ata_hsm_ok_in_wq(struct ata_port *ap,
struct ata_queued_cmd *qc)
{
if (qc->tf.flags & ATA_TFLAG_POLLING)
return 1;
if (ap->hsm_task_state == HSM_ST_FIRST) {
if (qc->tf.protocol == ATA_PROT_PIO &&
(qc->tf.flags & ATA_TFLAG_WRITE))
(qc->tf.flags & ATA_TFLAG_WRITE))
return 1;
if (ata_is_atapi(qc->tf.protocol) &&
!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
return 1;
}
......@@ -1391,6 +1412,7 @@ fsm_start:
return poll_next;
}
EXPORT_SYMBOL_GPL(ata_sff_hsm_move);
void ata_pio_task(struct work_struct *work)
{
......@@ -1560,6 +1582,7 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)
return 0;
}
EXPORT_SYMBOL_GPL(ata_sff_qc_issue);
/**
* ata_sff_qc_fill_rtf - fill result TF using ->sff_tf_read
......@@ -1579,6 +1602,7 @@ bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc)
qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf);
return true;
}
EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf);
/**
* ata_sff_host_intr - Handle host interrupt for given (port, task)
......@@ -1676,6 +1700,7 @@ idle_irq:
#endif
return 0; /* irq not handled */
}
EXPORT_SYMBOL_GPL(ata_sff_host_intr);
/**
* ata_sff_interrupt - Default ATA host interrupt handler
......@@ -1720,6 +1745,7 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
return IRQ_RETVAL(handled);
}
EXPORT_SYMBOL_GPL(ata_sff_interrupt);
/**
* ata_sff_freeze - Freeze SFF controller port
......@@ -1748,6 +1774,7 @@ void ata_sff_freeze(struct ata_port *ap)
ap->ops->sff_irq_clear(ap);
}
EXPORT_SYMBOL_GPL(ata_sff_freeze);
/**
* ata_sff_thaw - Thaw SFF controller port
......@@ -1765,6 +1792,7 @@ void ata_sff_thaw(struct ata_port *ap)
ap->ops->sff_irq_clear(ap);
ap->ops->sff_irq_on(ap);
}
EXPORT_SYMBOL_GPL(ata_sff_thaw);
/**
* ata_sff_prereset - prepare SFF link for reset
......@@ -1806,6 +1834,7 @@ int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
return 0;
}
EXPORT_SYMBOL_GPL(ata_sff_prereset);
/**
* ata_devchk - PATA device presence detection
......@@ -1918,6 +1947,7 @@ unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
return class;
}
EXPORT_SYMBOL_GPL(ata_sff_dev_classify);
/**
* ata_sff_wait_after_reset - wait for devices to become ready after reset
......@@ -1994,6 +2024,7 @@ int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
return ret;
}
EXPORT_SYMBOL_GPL(ata_sff_wait_after_reset);
static int ata_bus_softreset(struct ata_port *ap, unsigned int devmask,
unsigned long deadline)
......@@ -2066,6 +2097,7 @@ int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
DPRINTK("EXIT, classes[0]=%u [1]=%u\n", classes[0], classes[1]);
return 0;
}
EXPORT_SYMBOL_GPL(ata_sff_softreset);
/**
* sata_sff_hardreset - reset host port via SATA phy reset
......@@ -2098,6 +2130,7 @@ int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
DPRINTK("EXIT, class=%u\n", *class);
return rc;
}
EXPORT_SYMBOL_GPL(sata_sff_hardreset);
/**
* ata_sff_postreset - SFF postreset callback
......@@ -2133,6 +2166,7 @@ void ata_sff_postreset(struct ata_link *link, unsigned int *classes)
if (ap->ioaddr.ctl_addr)
iowrite8(ap->ctl, ap->ioaddr.ctl_addr);
}
EXPORT_SYMBOL_GPL(ata_sff_postreset);
/**
* ata_sff_error_handler - Stock error handler for BMDMA controller
......@@ -2205,6 +2239,7 @@ void ata_sff_error_handler(struct ata_port *ap)
ata_do_eh(ap, ap->ops->prereset, softreset, hardreset,
ap->ops->postreset);
}
EXPORT_SYMBOL_GPL(ata_sff_error_handler);
/**
* ata_sff_post_internal_cmd - Stock post_internal_cmd for SFF controller
......@@ -2227,6 +2262,7 @@ void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc)
spin_unlock_irqrestore(ap->lock, flags);
}
EXPORT_SYMBOL_GPL(ata_sff_post_internal_cmd);
/**
* ata_sff_port_start - Set port up for dma.
......@@ -2247,6 +2283,7 @@ int ata_sff_port_start(struct ata_port *ap)
return ata_port_start(ap);
return 0;
}
EXPORT_SYMBOL_GPL(ata_sff_port_start);
/**
* ata_sff_std_ports - initialize ioaddr with standard port offsets.
......@@ -2272,6 +2309,7 @@ void ata_sff_std_ports(struct ata_ioports *ioaddr)
ioaddr->status_addr = ioaddr->cmd_addr + ATA_REG_STATUS;
ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD;
}
EXPORT_SYMBOL_GPL(ata_sff_std_ports);
unsigned long ata_bmdma_mode_filter(struct ata_device *adev,
unsigned long xfer_mask)
......@@ -2283,6 +2321,7 @@ unsigned long ata_bmdma_mode_filter(struct ata_device *adev,
xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
return xfer_mask;
}
EXPORT_SYMBOL_GPL(ata_bmdma_mode_filter);
/**
* ata_bmdma_setup - Set up PCI IDE BMDMA transaction
......@@ -2311,6 +2350,7 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc)
/* issue r/w command */
ap->ops->sff_exec_command(ap, &qc->tf);
}
EXPORT_SYMBOL_GPL(ata_bmdma_setup);
/**
* ata_bmdma_start - Start a PCI IDE BMDMA transaction
......@@ -2343,6 +2383,7 @@ void ata_bmdma_start(struct ata_queued_cmd *qc)
* unneccessarily delayed for MMIO
*/
}
EXPORT_SYMBOL_GPL(ata_bmdma_start);
/**
* ata_bmdma_stop - Stop PCI IDE BMDMA transfer
......@@ -2367,6 +2408,7 @@ void ata_bmdma_stop(struct ata_queued_cmd *qc)
/* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
ata_sff_dma_pause(ap);
}
EXPORT_SYMBOL_GPL(ata_bmdma_stop);
/**
* ata_bmdma_status - Read PCI IDE BMDMA status
......@@ -2383,6 +2425,7 @@ u8 ata_bmdma_status(struct ata_port *ap)
{
return ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
}
EXPORT_SYMBOL_GPL(ata_bmdma_status);
/**
* ata_bus_reset - reset host port and associated ATA channel
......@@ -2475,6 +2518,7 @@ err_out:
DPRINTK("EXIT\n");
}
EXPORT_SYMBOL_GPL(ata_bus_reset);
#ifdef CONFIG_PCI
......@@ -2502,6 +2546,7 @@ int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev)
return -EOPNOTSUPP;
return 0;
}
EXPORT_SYMBOL_GPL(ata_pci_bmdma_clear_simplex);
/**
* ata_pci_bmdma_init - acquire PCI BMDMA resources and init ATA host
......@@ -2554,11 +2599,12 @@ int ata_pci_bmdma_init(struct ata_host *host)
host->flags |= ATA_HOST_SIMPLEX;
ata_port_desc(ap, "bmdma 0x%llx",
(unsigned long long)pci_resource_start(pdev, 4) + 8 * i);
(unsigned long long)pci_resource_start(pdev, 4) + 8 * i);
}
return 0;
}
EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
static int ata_resources_present(struct pci_dev *pdev, int port)
{
......@@ -2566,7 +2612,7 @@ static int ata_resources_present(struct pci_dev *pdev, int port)
/* Check the PCI resources for this channel are enabled */
port = port * 2;
for (i = 0; i < 2; i ++) {
for (i = 0; i < 2; i++) {
if (pci_resource_start(pdev, port + i) == 0 ||
pci_resource_len(pdev, port + i) == 0)
return 0;
......@@ -2651,6 +2697,7 @@ int ata_pci_sff_init_host(struct ata_host *host)
return 0;
}
EXPORT_SYMBOL_GPL(ata_pci_sff_init_host);
/**
* ata_pci_sff_prepare_host - helper to prepare native PCI ATA host
......@@ -2668,7 +2715,7 @@ int ata_pci_sff_init_host(struct ata_host *host)
* 0 on success, -errno otherwise.
*/
int ata_pci_sff_prepare_host(struct pci_dev *pdev,
const struct ata_port_info * const * ppi,
const struct ata_port_info * const *ppi,
struct ata_host **r_host)
{
struct ata_host *host;
......@@ -2698,17 +2745,18 @@ int ata_pci_sff_prepare_host(struct pci_dev *pdev,
*r_host = host;
return 0;
err_bmdma:
err_bmdma:
/* This is necessary because PCI and iomap resources are
* merged and releasing the top group won't release the
* acquired resources if some of those have been acquired
* before entering this function.
*/
pcim_iounmap_regions(pdev, 0xf);
err_out:
err_out:
devres_release_group(&pdev->dev, NULL);
return rc;
}
EXPORT_SYMBOL_GPL(ata_pci_sff_prepare_host);
/**
* ata_pci_sff_activate_host - start SFF host, request IRQ and register it
......@@ -2794,7 +2842,7 @@ int ata_pci_sff_activate_host(struct ata_host *host,
}
rc = ata_host_register(host, sht);
out:
out:
if (rc == 0)
devres_remove_group(dev, NULL);
else
......@@ -2802,6 +2850,7 @@ int ata_pci_sff_activate_host(struct ata_host *host,
return rc;
}
EXPORT_SYMBOL_GPL(ata_pci_sff_activate_host);
/**
* ata_pci_sff_init_one - Initialize/register PCI IDE host controller
......@@ -2829,7 +2878,7 @@ int ata_pci_sff_activate_host(struct ata_host *host,
* Zero on success, negative on errno-based value on error.
*/
int ata_pci_sff_init_one(struct pci_dev *pdev,
const struct ata_port_info * const * ppi,
const struct ata_port_info * const *ppi,
struct scsi_host_template *sht, void *host_priv)
{
struct device *dev = &pdev->dev;
......@@ -2868,7 +2917,7 @@ int ata_pci_sff_init_one(struct pci_dev *pdev,
pci_set_master(pdev);
rc = ata_pci_sff_activate_host(host, ata_sff_interrupt, sht);
out:
out:
if (rc == 0)
devres_remove_group(&pdev->dev, NULL);
else
......@@ -2876,54 +2925,7 @@ int ata_pci_sff_init_one(struct pci_dev *pdev,
return rc;
}
EXPORT_SYMBOL_GPL(ata_pci_sff_init_one);
#endif /* CONFIG_PCI */
EXPORT_SYMBOL_GPL(ata_sff_port_ops);
EXPORT_SYMBOL_GPL(ata_bmdma_port_ops);
EXPORT_SYMBOL_GPL(ata_sff_qc_prep);
EXPORT_SYMBOL_GPL(ata_sff_dumb_qc_prep);
EXPORT_SYMBOL_GPL(ata_sff_dev_select);
EXPORT_SYMBOL_GPL(ata_sff_check_status);
EXPORT_SYMBOL_GPL(ata_sff_dma_pause);
EXPORT_SYMBOL_GPL(ata_sff_pause);
EXPORT_SYMBOL_GPL(ata_sff_busy_sleep);
EXPORT_SYMBOL_GPL(ata_sff_wait_ready);
EXPORT_SYMBOL_GPL(ata_sff_tf_load);
EXPORT_SYMBOL_GPL(ata_sff_tf_read);
EXPORT_SYMBOL_GPL(ata_sff_exec_command);
EXPORT_SYMBOL_GPL(ata_sff_data_xfer);
EXPORT_SYMBOL_GPL(ata_sff_data_xfer_noirq);
EXPORT_SYMBOL_GPL(ata_sff_irq_on);
EXPORT_SYMBOL_GPL(ata_sff_irq_clear);
EXPORT_SYMBOL_GPL(ata_sff_hsm_move);
EXPORT_SYMBOL_GPL(ata_sff_qc_issue);
EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf);
EXPORT_SYMBOL_GPL(ata_sff_host_intr);
EXPORT_SYMBOL_GPL(ata_sff_interrupt);
EXPORT_SYMBOL_GPL(ata_sff_freeze);
EXPORT_SYMBOL_GPL(ata_sff_thaw);
EXPORT_SYMBOL_GPL(ata_sff_prereset);
EXPORT_SYMBOL_GPL(ata_sff_dev_classify);
EXPORT_SYMBOL_GPL(ata_sff_wait_after_reset);
EXPORT_SYMBOL_GPL(ata_sff_softreset);
EXPORT_SYMBOL_GPL(sata_sff_hardreset);
EXPORT_SYMBOL_GPL(ata_sff_postreset);
EXPORT_SYMBOL_GPL(ata_sff_error_handler);
EXPORT_SYMBOL_GPL(ata_sff_post_internal_cmd);
EXPORT_SYMBOL_GPL(ata_sff_port_start);
EXPORT_SYMBOL_GPL(ata_sff_std_ports);
EXPORT_SYMBOL_GPL(ata_bmdma_mode_filter);
EXPORT_SYMBOL_GPL(ata_bmdma_setup);
EXPORT_SYMBOL_GPL(ata_bmdma_start);
EXPORT_SYMBOL_GPL(ata_bmdma_stop);
EXPORT_SYMBOL_GPL(ata_bmdma_status);
EXPORT_SYMBOL_GPL(ata_bus_reset);
#ifdef CONFIG_PCI
EXPORT_SYMBOL_GPL(ata_pci_bmdma_clear_simplex);
EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
EXPORT_SYMBOL_GPL(ata_pci_sff_init_host);
EXPORT_SYMBOL_GPL(ata_pci_sff_prepare_host);
EXPORT_SYMBOL_GPL(ata_pci_sff_activate_host);
EXPORT_SYMBOL_GPL(ata_pci_sff_init_one);
#endif /* CONFIG_PCI */
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