Commit 9d3501ab authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik

libata: kill ata_id_to_dma_mode()

ata_id_to_dma_mode() isn't quite generic.  The function is basically
privately implemented ata_id_xfermask() combined with hardcoded mode
printing and configuration which are specific to ata_generic.

Kill the function and open code it in generic_set_mode() using generic
xfermode handling functions.
Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 70cd071e
...@@ -63,7 +63,22 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) ...@@ -63,7 +63,22 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
/* We do need the right mode information for DMA or PIO /* We do need the right mode information for DMA or PIO
and this comes from the current configuration flags */ and this comes from the current configuration flags */
if (dma_enabled & (1 << (5 + dev->devno))) { if (dma_enabled & (1 << (5 + dev->devno))) {
ata_id_to_dma_mode(dev, XFER_MW_DMA_0); unsigned int xfer_mask = ata_id_xfermask(dev->id);
const char *name;
if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))
name = ata_mode_string(xfer_mask);
else {
/* SWDMA perhaps? */
name = "DMA";
xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0);
}
ata_dev_printk(dev, KERN_INFO, "configured for %s\n",
name);
dev->xfer_mode = ata_xfer_mask2mode(xfer_mask);
dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode);
dev->flags &= ~ATA_DFLAG_PIO; dev->flags &= ~ATA_DFLAG_PIO;
} else { } else {
ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
......
...@@ -1287,48 +1287,6 @@ static int ata_hpa_resize(struct ata_device *dev) ...@@ -1287,48 +1287,6 @@ static int ata_hpa_resize(struct ata_device *dev)
return 0; return 0;
} }
/**
* ata_id_to_dma_mode - Identify DMA mode from id block
* @dev: device to identify
* @unknown: mode to assume if we cannot tell
*
* Set up the timing values for the device based upon the identify
* reported values for the DMA mode. This function is used by drivers
* which rely upon firmware configured modes, but wish to report the
* mode correctly when possible.
*
* In addition we emit similarly formatted messages to the default
* ata_dev_set_mode handler, in order to provide consistency of
* presentation.
*/
void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown)
{
unsigned int mask;
u8 mode;
/* Pack the DMA modes */
mask = ((dev->id[63] >> 8) << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA;
if (dev->id[53] & 0x04)
mask |= ((dev->id[88] >> 8) << ATA_SHIFT_UDMA) & ATA_MASK_UDMA;
/* Select the mode in use */
mode = ata_xfer_mask2mode(mask);
if (mode != 0xff) {
ata_dev_printk(dev, KERN_INFO, "configured for %s\n",
ata_mode_string(mask));
} else {
/* SWDMA perhaps ? */
mode = unknown;
ata_dev_printk(dev, KERN_INFO, "configured for DMA\n");
}
/* Configure the device reporting */
dev->xfer_mode = mode;
dev->xfer_shift = ata_xfer_mode2shift(mode);
}
/** /**
* ata_noop_dev_select - Select device 0/1 on ATA bus * ata_noop_dev_select - Select device 0/1 on ATA bus
* @ap: ATA channel to manipulate * @ap: ATA channel to manipulate
...@@ -7653,7 +7611,6 @@ EXPORT_SYMBOL_GPL(ata_host_resume); ...@@ -7653,7 +7611,6 @@ EXPORT_SYMBOL_GPL(ata_host_resume);
#endif /* CONFIG_PM */ #endif /* CONFIG_PM */
EXPORT_SYMBOL_GPL(ata_id_string); EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string); EXPORT_SYMBOL_GPL(ata_id_c_string);
EXPORT_SYMBOL_GPL(ata_id_to_dma_mode);
EXPORT_SYMBOL_GPL(ata_scsi_simulate); EXPORT_SYMBOL_GPL(ata_scsi_simulate);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy); EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
......
...@@ -890,7 +890,6 @@ extern void ata_id_string(const u16 *id, unsigned char *s, ...@@ -890,7 +890,6 @@ extern void ata_id_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len); unsigned int ofs, unsigned int len);
extern void ata_id_c_string(const u16 *id, unsigned char *s, extern void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len); unsigned int ofs, unsigned int len);
extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown);
extern void ata_bmdma_setup(struct ata_queued_cmd *qc); extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
extern void ata_bmdma_start(struct ata_queued_cmd *qc); extern void ata_bmdma_start(struct ata_queued_cmd *qc);
extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
......
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