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Commit 0cbb0e77 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Jeff Garzik
Browse files

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: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 439fcaec

drivers/ata/ahci.c

+24 −17
Original line number Diff line number Diff line
@@ -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;