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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2010-03-03 20:17:45 +0300 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-05-15 01:08:01 +0400 |
| commit | 0cbb0e774b0ea0547ec1b9e795637e309327ae27 (patch) | |
| tree | 383b5c40d5efa1f2fb86a2a7cfee1a9d2fc621a4 /drivers/ata | |
| parent | 439fcaec10cef14a08557623d6f5fa240aaf3e2b (diff) | |
| download | linux-0cbb0e774b0ea0547ec1b9e795637e309327ae27.tar.xz | |
ahci: Introduce ahci_set_em_messages()
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>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index a69e5b03429f..d5dc1238a88d 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -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; |