[SCSI] qla2xxx: Add beacon support via class-device attribute.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 294 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index f4d755a643e4..3105bb93cc19 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -695,3 +695,297 @@ qla24xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
 
         return ret;
 }
+
+
+static inline void
+qla2x00_flip_colors(scsi_qla_host_t *ha, uint16_t *pflags)
+{
+        if (IS_QLA2322(ha)) {
+                /* Flip all colors. */
+                if (ha->beacon_color_state == QLA_LED_ALL_ON) {
+                        /* Turn off. */
+                        ha->beacon_color_state = 0;
+                        *pflags = GPIO_LED_ALL_OFF;
+                } else {
+                        /* Turn on. */
+                        ha->beacon_color_state = QLA_LED_ALL_ON;
+                        *pflags = GPIO_LED_RGA_ON;
+                }
+        } else {
+                /* Flip green led only. */
+                if (ha->beacon_color_state == QLA_LED_GRN_ON) {
+                        /* Turn off. */
+                        ha->beacon_color_state = 0;
+                        *pflags = GPIO_LED_GREEN_OFF_AMBER_OFF;
+                } else {
+                        /* Turn on. */
+                        ha->beacon_color_state = QLA_LED_GRN_ON;
+                        *pflags = GPIO_LED_GREEN_ON_AMBER_OFF;
+                }
+        }
+}
+
+void
+qla2x00_beacon_blink(struct scsi_qla_host *ha)
+{
+        uint16_t gpio_enable;
+        uint16_t gpio_data;
+        uint16_t led_color = 0;
+        unsigned long flags;
+        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
+
+        if (ha->pio_address)
+                reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
+
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+
+        /* Save the Original GPIOE. */
+        if (ha->pio_address) {
+                gpio_enable = RD_REG_WORD_PIO(&reg->gpioe);
+                gpio_data = RD_REG_WORD_PIO(&reg->gpiod);
+        } else {
+                gpio_enable = RD_REG_WORD(&reg->gpioe);
+                gpio_data = RD_REG_WORD(&reg->gpiod);
+        }
+
+        /* Set the modified gpio_enable values */
+        gpio_enable |= GPIO_LED_MASK;
+
+        if (ha->pio_address) {
+                WRT_REG_WORD_PIO(&reg->gpioe, gpio_enable);
+        } else {
+                WRT_REG_WORD(&reg->gpioe, gpio_enable);
+                RD_REG_WORD(&reg->gpioe);
+        }
+
+        qla2x00_flip_colors(ha, &led_color);
+
+        /* Clear out any previously set LED color. */
+        gpio_data &= ~GPIO_LED_MASK;
+
+        /* Set the new input LED color to GPIOD. */
+        gpio_data |= led_color;
+
+        /* Set the modified gpio_data values */
+        if (ha->pio_address) {
+                WRT_REG_WORD_PIO(&reg->gpiod, gpio_data);
+        } else {
+                WRT_REG_WORD(&reg->gpiod, gpio_data);
+                RD_REG_WORD(&reg->gpiod);
+        }
+
+        spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+int
+qla2x00_beacon_on(struct scsi_qla_host *ha)
+{
+        uint16_t gpio_enable;
+        uint16_t gpio_data;
+        unsigned long flags;
+        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
+
+        ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
+        ha->fw_options[1] |= FO1_DISABLE_GPIO6_7;
+
+        if (qla2x00_set_fw_options(ha, ha->fw_options) != QLA_SUCCESS) {
+                qla_printk(KERN_WARNING, ha,
+                    "Unable to update fw options (beacon on).\n");
+                return QLA_FUNCTION_FAILED;
+        }
+
+        if (ha->pio_address)
+                reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
+
+        /* Turn off LEDs. */
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+        if (ha->pio_address) {
+                gpio_enable = RD_REG_WORD_PIO(&reg->gpioe);
+                gpio_data = RD_REG_WORD_PIO(&reg->gpiod);
+        } else {
+                gpio_enable = RD_REG_WORD(&reg->gpioe);
+                gpio_data = RD_REG_WORD(&reg->gpiod);
+        }
+        gpio_enable |= GPIO_LED_MASK;
+
+        /* Set the modified gpio_enable values. */
+        if (ha->pio_address) {
+                WRT_REG_WORD_PIO(&reg->gpioe, gpio_enable);
+        } else {
+                WRT_REG_WORD(&reg->gpioe, gpio_enable);
+                RD_REG_WORD(&reg->gpioe);
+        }
+
+        /* Clear out previously set LED colour. */
+        gpio_data &= ~GPIO_LED_MASK;
+        if (ha->pio_address) {
+                WRT_REG_WORD_PIO(&reg->gpiod, gpio_data);
+        } else {
+                WRT_REG_WORD(&reg->gpiod, gpio_data);
+                RD_REG_WORD(&reg->gpiod);
+        }
+        spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+        /*
+         * Let the per HBA timer kick off the blinking process based on
+         * the following flags. No need to do anything else now.
+         */
+        ha->beacon_blink_led = 1;
+        ha->beacon_color_state = 0;
+
+        return QLA_SUCCESS;
+}
+
+int
+qla2x00_beacon_off(struct scsi_qla_host *ha)
+{
+        int rval = QLA_SUCCESS;
+
+        ha->beacon_blink_led = 0;
+
+        /* Set the on flag so when it gets flipped it will be off. */
+        if (IS_QLA2322(ha))
+                ha->beacon_color_state = QLA_LED_ALL_ON;
+        else
+                ha->beacon_color_state = QLA_LED_GRN_ON;
+
+        ha->isp_ops.beacon_blink(ha);   /* This turns green LED off */
+
+        ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
+        ha->fw_options[1] &= ~FO1_DISABLE_GPIO6_7;
+
+        rval = qla2x00_set_fw_options(ha, ha->fw_options);
+        if (rval != QLA_SUCCESS)
+                qla_printk(KERN_WARNING, ha,
+                    "Unable to update fw options (beacon off).\n");
+        return rval;
+}
+
+
+static inline void
+qla24xx_flip_colors(scsi_qla_host_t *ha, uint16_t *pflags)
+{
+        /* Flip all colors. */
+        if (ha->beacon_color_state == QLA_LED_ALL_ON) {
+                /* Turn off. */
+                ha->beacon_color_state = 0;
+                *pflags = 0;
+        } else {
+                /* Turn on. */
+                ha->beacon_color_state = QLA_LED_ALL_ON;
+                *pflags = GPDX_LED_YELLOW_ON | GPDX_LED_AMBER_ON;
+        }
+}
+
+void
+qla24xx_beacon_blink(struct scsi_qla_host *ha)
+{
+        uint16_t led_color = 0;
+        uint32_t gpio_data;
+        unsigned long flags;
+        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+
+        /* Save the Original GPIOD. */
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+        gpio_data = RD_REG_DWORD(&reg->gpiod);
+
+        /* Enable the gpio_data reg for update. */
+        gpio_data |= GPDX_LED_UPDATE_MASK;
+
+        WRT_REG_DWORD(&reg->gpiod, gpio_data);
+        gpio_data = RD_REG_DWORD(&reg->gpiod);
+
+        /* Set the color bits. */
+        qla24xx_flip_colors(ha, &led_color);
+
+        /* Clear out any previously set LED color. */
+        gpio_data &= ~GPDX_LED_COLOR_MASK;
+
+        /* Set the new input LED color to GPIOD. */
+        gpio_data |= led_color;
+
+        /* Set the modified gpio_data values. */
+        WRT_REG_DWORD(&reg->gpiod, gpio_data);
+        gpio_data = RD_REG_DWORD(&reg->gpiod);
+        spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+int
+qla24xx_beacon_on(struct scsi_qla_host *ha)
+{
+        uint32_t gpio_data;
+        unsigned long flags;
+        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+
+        if (ha->beacon_blink_led == 0) {
+                /* Enable firmware for update */
+                ha->fw_options[1] |= ADD_FO1_DISABLE_GPIO_LED_CTRL;
+
+                if (qla2x00_set_fw_options(ha, ha->fw_options) != QLA_SUCCESS)
+                        return QLA_FUNCTION_FAILED;
+
+                if (qla2x00_get_fw_options(ha, ha->fw_options) !=
+                    QLA_SUCCESS) {
+                        qla_printk(KERN_WARNING, ha,
+                            "Unable to update fw options (beacon on).\n");
+                        return QLA_FUNCTION_FAILED;
+                }
+
+                spin_lock_irqsave(&ha->hardware_lock, flags);
+                gpio_data = RD_REG_DWORD(&reg->gpiod);
+
+                /* Enable the gpio_data reg for update. */
+                gpio_data |= GPDX_LED_UPDATE_MASK;
+                WRT_REG_DWORD(&reg->gpiod, gpio_data);
+                RD_REG_DWORD(&reg->gpiod);
+
+                spin_unlock_irqrestore(&ha->hardware_lock, flags);
+        }
+
+        /* So all colors blink together. */
+        ha->beacon_color_state = 0;
+
+        /* Let the per HBA timer kick off the blinking process. */
+        ha->beacon_blink_led = 1;
+
+        return QLA_SUCCESS;
+}
+
+int
+qla24xx_beacon_off(struct scsi_qla_host *ha)
+{
+        uint32_t gpio_data;
+        unsigned long flags;
+        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+
+        ha->beacon_blink_led = 0;
+        ha->beacon_color_state = QLA_LED_ALL_ON;
+
+        ha->isp_ops.beacon_blink(ha);   /* Will flip to all off. */
+
+        /* Give control back to firmware. */
+        spin_lock_irqsave(&ha->hardware_lock, flags);
+        gpio_data = RD_REG_DWORD(&reg->gpiod);
+
+        /* Disable the gpio_data reg for update. */
+        gpio_data &= ~GPDX_LED_UPDATE_MASK;
+        WRT_REG_DWORD(&reg->gpiod, gpio_data);
+        RD_REG_DWORD(&reg->gpiod);
+        spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+        ha->fw_options[1] &= ~ADD_FO1_DISABLE_GPIO_LED_CTRL;
+
+        if (qla2x00_set_fw_options(ha, ha->fw_options) != QLA_SUCCESS) {
+                qla_printk(KERN_WARNING, ha,
+                    "Unable to update fw options (beacon off).\n");
+                return QLA_FUNCTION_FAILED;
+        }
+
+        if (qla2x00_get_fw_options(ha, ha->fw_options) != QLA_SUCCESS) {
+                qla_printk(KERN_WARNING, ha,
+                    "Unable to get fw options (beacon off).\n");
+                return QLA_FUNCTION_FAILED;
+        }
+
+        return QLA_SUCCESS;
+}