Commit 87943acf authored by David Milburn's avatar David Milburn Committed by Jeff Garzik
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libata: ahci enclosure management bit mask 



Enclosure management bit mask definitions.

Signed-off-by: default avatarDavid Milburn <dmilburn@redhat.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent eb40963c

drivers/ata/ahci.c

+23 −12
Original line number Diff line number Diff line
@@ -49,6 +49,17 @@ 
#define DRV_NAME	"ahci"

#define DRV_VERSION	"3.0"



/* Enclosure Management Control */

#define EM_CTRL_MSG_TYPE              0x000f0000



/* Enclosure Management LED Message Type */

#define EM_MSG_LED_HBA_PORT           0x0000000f

#define EM_MSG_LED_PMP_SLOT           0x0000ff00

#define EM_MSG_LED_VALUE              0xffff0000

#define EM_MSG_LED_VALUE_ACTIVITY     0x00070000

#define EM_MSG_LED_VALUE_OFF          0xfff80000

#define EM_MSG_LED_VALUE_ON           0x00010000



static int ahci_skip_host_reset;

module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);

MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
@@ -1225,7 +1236,7 @@ static void ahci_sw_activity_blink(unsigned long arg) 
	u32 activity_led_state;

	unsigned long flags;



	led_message &= 0xffff0000;

	led_message &= EM_MSG_LED_VALUE;

	led_message |= ap->port_no | (link->pmp << 8);



	/* check to see if we've had activity.  If so,
@@ -1236,7 +1247,7 @@ static void ahci_sw_activity_blink(unsigned long arg) 
	if (emp->saved_activity != emp->activity) {

		emp->saved_activity = emp->activity;

		/* get the current LED state */

		activity_led_state = led_message & 0x00010000;

		activity_led_state = led_message & EM_MSG_LED_VALUE_ON;



		if (activity_led_state)

			activity_led_state = 0;
@@ -1244,14 +1255,14 @@ static void ahci_sw_activity_blink(unsigned long arg) 
			activity_led_state = 1;



		/* clear old state */

		led_message &= 0xfff8ffff;

		led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;



		/* toggle state */

		led_message |= (activity_led_state << 16);

		mod_timer(&emp->timer, jiffies + msecs_to_jiffies(100));

	} else {

		/* switch to idle */

		led_message &= 0xfff8ffff;

		led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;

		if (emp->blink_policy == BLINK_OFF)

			led_message |= (1 << 16);

	}
@@ -1300,7 +1311,7 @@ static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state, 
	struct ahci_em_priv *emp;



	/* get the slot number from the message */

	pmp = (state & 0x0000ff00) >> 8;

	pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;

	if (pmp < MAX_SLOTS)

		emp = &pp->em_priv[pmp];

	else
@@ -1325,7 +1336,7 @@ static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state, 
	message[0] |= (4 << 8);



	/* ignore 0:4 of byte zero, fill in port info yourself */

	message[1] = ((state & 0xfffffff0) | ap->port_no);

	message[1] = ((state & ~EM_MSG_LED_HBA_PORT) | ap->port_no);



	/* write message to EM_LOC */

	writel(message[0], mmio + hpriv->em_loc);
@@ -1368,7 +1379,7 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf, 
	state = simple_strtoul(buf, NULL, 0);



	/* get the slot number from the message */

	pmp = (state & 0x0000ff00) >> 8;

	pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;

	if (pmp < MAX_SLOTS)

		emp = &pp->em_priv[pmp];

	else
@@ -1379,7 +1390,7 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf, 
	 * activity led through em_message

	 */

	if (emp->blink_policy)

		state &= 0xfff8ffff;

		state &= ~EM_MSG_LED_VALUE_ACTIVITY;



	return ahci_transmit_led_message(ap, state, size);

}
@@ -1398,16 +1409,16 @@ static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val) 
		link->flags &= ~(ATA_LFLAG_SW_ACTIVITY);



		/* set the LED to OFF */

		port_led_state &= 0xfff80000;

		port_led_state &= EM_MSG_LED_VALUE_OFF;

		port_led_state |= (ap->port_no | (link->pmp << 8));

		ahci_transmit_led_message(ap, port_led_state, 4);

	} else {

		link->flags |= ATA_LFLAG_SW_ACTIVITY;

		if (val == BLINK_OFF) {

			/* set LED to ON for idle */

			port_led_state &= 0xfff80000;

			port_led_state &= EM_MSG_LED_VALUE_OFF;

			port_led_state |= (ap->port_no | (link->pmp << 8));

			port_led_state |= 0x00010000; /* check this */

			port_led_state |= EM_MSG_LED_VALUE_ON; /* check this */

			ahci_transmit_led_message(ap, port_led_state, 4);

		}

	}
@@ -2618,7 +2629,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
		u32 em_loc = readl(mmio + HOST_EM_LOC);

		u32 em_ctl = readl(mmio + HOST_EM_CTL);



		messages = (em_ctl & 0x000f0000) >> 16;

		messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16;



		/* we only support LED message type right now */

		if ((messages & 0x01) && (ahci_em_messages == 1)) {