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ahci: Introduce ahci_set_em_messages()

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Factor out some ahci_em_messages handling code from ahci_init_one().
We would like to reuse it for non-PCI devices.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Anton Vorontsov 2010-03-03 20:17:45 +03:00 committed by Jeff Garzik
parent 439fcaec10
commit 0cbb0e774b
1 changed files with 24 additions and 17 deletions
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41
drivers/ata/ahci.c
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@ -3270,6 +3270,29 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host)
{}
#endif
static void ahci_set_em_messages(struct ahci_host_priv *hpriv,
struct ata_port_info *pi)
{
u8 messages;
void __iomem *mmio = hpriv->mmio;
u32 em_loc = readl(mmio + HOST_EM_LOC);
u32 em_ctl = readl(mmio + HOST_EM_CTL);
if (!ahci_em_messages || !(hpriv->cap & HOST_CAP_EMS))
return;
messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16;
/* we only support LED message type right now */
if ((messages & 0x01) && (ahci_em_messages == 1)) {
/* store em_loc */
hpriv->em_loc = ((em_loc >> 16) * 4);
pi->flags |= ATA_FLAG_EM;
if (!(em_ctl & EM_CTL_ALHD))
pi->flags |= ATA_FLAG_SW_ACTIVITY;
}
}
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version;
@ -3373,23 +3396,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (hpriv->cap & HOST_CAP_PMP)
pi.flags |= ATA_FLAG_PMP;
if (ahci_em_messages && (hpriv->cap & HOST_CAP_EMS)) {
u8 messages;
void __iomem *mmio = hpriv->mmio;
u32 em_loc = readl(mmio + HOST_EM_LOC);
u32 em_ctl = readl(mmio + HOST_EM_CTL);
messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16;
/* we only support LED message type right now */
if ((messages & 0x01) && (ahci_em_messages == 1)) {
/* store em_loc */
hpriv->em_loc = ((em_loc >> 16) * 4);
pi.flags |= ATA_FLAG_EM;
if (!(em_ctl & EM_CTL_ALHD))
pi.flags |= ATA_FLAG_SW_ACTIVITY;
}
}
ahci_set_em_messages(hpriv, &pi);
if (ahci_broken_system_poweroff(pdev)) {
pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;