From 62b6f575d1978a965339c69158bd10d0529815fb Mon Sep 17 00:00:00 2001
From: Sakthivel K <Sakthivel.SaravananKamalRaju@xxxxxxxx>
Date: Mon, 11 Mar 2013 20:20:19 +0530
Subject: [PATCH V2 05/12] pm80xx: MSI-X implementation for using 64 interrupts
Implementation of interrupt handlers and tasklets to support
upto 64 interrupt for the device.
Signed-off-by: Sakthivel K <Sakthivel.SaravananKamalRaju@xxxxxxxx>
Signed-off-by: Anand Kumar S <AnandKumar.Santhanam@xxxxxxxx>
Ack-by: Jack Wang <jack_wang@xxxxxxxxx>
---
drivers/scsi/pm8001/pm8001_init.c | 456 +++++++++++++++++++++++++++++++++++--
drivers/scsi/pm8001/pm8001_sas.h | 1 +
2 files changed, 432 insertions(+), 25 deletions(-)
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index e8a983f..95b6966 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -163,24 +163,33 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha)
}
#ifdef PM8001_USE_TASKLET
+
+/**
+ * tasklet for 64 msi-x interrupt handler
+ * @opaque: the passed general host adapter struct
+ * Note: pm8001_tasklet is common for pm8001 & pm80xx
+ */
static void pm8001_tasklet(unsigned long opaque)
{
struct pm8001_hba_info *pm8001_ha;
+ u32 vec;
pm8001_ha = (struct pm8001_hba_info *)opaque;
if (unlikely(!pm8001_ha))
BUG_ON(1);
- PM8001_CHIP_DISP->isr(pm8001_ha, 0);
+ vec = pm8001_ha->int_vector;
+ PM8001_CHIP_DISP->isr(pm8001_ha, vec);
}
#endif
+/**
+ * pm8001_interrupt_handler_x -main interrupt handler invokde for all interrupt.
+ * It obtains the vector number and calls the equivalent bottom half or services
+ * directly.
+ * @vec: vector number; will be 0 for none msi-x operation
+ * @opaque: the passed general host adapter struct
+ */
- /**
- * pm8001_interrupt - when HBA originate a interrupt,we should invoke this
- * dispatcher to handle each case.
- * @irq: irq number.
- * @opaque: the passed general host adapter struct
- */
-static irqreturn_t pm8001_interrupt(int irq, void *opaque)
+static inline irqreturn_t pm8001_interrupt_handler_x(int vec, void *opaque)
{
struct pm8001_hba_info *pm8001_ha;
irqreturn_t ret = IRQ_HANDLED;
@@ -190,6 +199,7 @@ static irqreturn_t pm8001_interrupt(int irq, void *opaque)
return IRQ_NONE;
if (!PM8001_CHIP_DISP->is_our_interupt(pm8001_ha))
return IRQ_NONE;
+ pm8001_ha->int_vector = vec;
#ifdef PM8001_USE_TASKLET
tasklet_schedule(&pm8001_ha->tasklet);
#else
@@ -198,6 +208,365 @@ static irqreturn_t pm8001_interrupt(int irq, void *opaque)
return ret;
}
+/* 64 interrupt handlers for 64 msi-x vectors */
+static irqreturn_t pm8001_interrupt_handler0(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(0, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler1(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(1, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler2(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(2, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler3(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(3, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler4(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(4, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler5(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(5, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler6(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(6, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler7(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(7, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler8(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(8, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler9(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(9, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler10(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(10, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler11(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(11, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler12(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(12, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler13(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(13, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler14(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(14, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler15(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(15, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler16(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(16, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler17(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(17, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler18(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(18, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler19(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(19, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler20(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(20, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler21(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(21, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler22(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(22, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler23(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(23, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler24(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(24, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler25(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(25, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler26(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(26, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler27(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(27, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler28(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(28, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler29(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(29, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler30(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(30, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler31(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(31, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler32(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(32, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler33(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(33, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler34(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(34, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler35(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(35, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler36(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(36, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler37(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(37, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler38(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(38, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler39(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(39, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler40(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(40, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler41(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(41, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler42(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(42, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler43(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(43, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler44(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(44, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler45(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(45, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler46(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(46, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler47(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(47, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler48(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(48, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler49(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(49, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler50(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(50, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler51(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(51, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler52(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(52, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler53(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(53, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler54(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(54, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler55(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(55, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler56(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(56, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler57(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(57, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler58(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(58, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler59(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(59, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler60(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(60, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler61(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(61, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler62(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(62, dev_id);
+}
+
+static irqreturn_t pm8001_interrupt_handler63(int irq, void *dev_id)
+{
+ return pm8001_interrupt_handler_x(63, dev_id);
+}
+
+/* array of 64 interrupt handlers used during request_irq for msi-x int */
+/* pm8001_interrupt_handler0 routine is common for pm8001 & pm80xx */
+static irqreturn_t (*pm8001_interrupt[PM8001_MAX_MSIX_VEC])
+ (int vec, void *dev_id) = {
+ pm8001_interrupt_handler0, pm8001_interrupt_handler1,
+ pm8001_interrupt_handler2, pm8001_interrupt_handler3,
+ pm8001_interrupt_handler4, pm8001_interrupt_handler5,
+ pm8001_interrupt_handler6, pm8001_interrupt_handler7,
+ pm8001_interrupt_handler8, pm8001_interrupt_handler9,
+ pm8001_interrupt_handler10, pm8001_interrupt_handler11,
+ pm8001_interrupt_handler12, pm8001_interrupt_handler13,
+ pm8001_interrupt_handler14, pm8001_interrupt_handler15,
+ pm8001_interrupt_handler16, pm8001_interrupt_handler17,
+ pm8001_interrupt_handler18, pm8001_interrupt_handler19,
+ pm8001_interrupt_handler20, pm8001_interrupt_handler21,
+ pm8001_interrupt_handler22, pm8001_interrupt_handler23,
+ pm8001_interrupt_handler24, pm8001_interrupt_handler25,
+ pm8001_interrupt_handler26, pm8001_interrupt_handler27,
+ pm8001_interrupt_handler28, pm8001_interrupt_handler29,
+ pm8001_interrupt_handler30, pm8001_interrupt_handler31,
+ pm8001_interrupt_handler32, pm8001_interrupt_handler33,
+ pm8001_interrupt_handler34, pm8001_interrupt_handler35,
+ pm8001_interrupt_handler36, pm8001_interrupt_handler37,
+ pm8001_interrupt_handler38, pm8001_interrupt_handler39,
+ pm8001_interrupt_handler40, pm8001_interrupt_handler41,
+ pm8001_interrupt_handler42, pm8001_interrupt_handler43,
+ pm8001_interrupt_handler44, pm8001_interrupt_handler45,
+ pm8001_interrupt_handler46, pm8001_interrupt_handler47,
+ pm8001_interrupt_handler48, pm8001_interrupt_handler49,
+ pm8001_interrupt_handler50, pm8001_interrupt_handler51,
+ pm8001_interrupt_handler52, pm8001_interrupt_handler53,
+ pm8001_interrupt_handler54, pm8001_interrupt_handler55,
+ pm8001_interrupt_handler56, pm8001_interrupt_handler57,
+ pm8001_interrupt_handler58, pm8001_interrupt_handler59,
+ pm8001_interrupt_handler60, pm8001_interrupt_handler61,
+ pm8001_interrupt_handler62, pm8001_interrupt_handler63
+};
+
/**
* pm8001_alloc - initiate our hba structure and 6 DMAs area.
* @pm8001_ha:our hba structure.
