crypto: cavium/nitrox - Enabled Mailbox support

Enabled the PF->VF Mailbox support. Mailbox message are interpreted
as {type, opcode, data}. Supported message types are REQ, ACK and NACK.

Signed-off-by: Srikanth Jampala <Jampala.Srikanth@cavium.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/cavium/nitrox/nitrox_isr.c

@@ -7,6 +7,7 @@
 #include "nitrox_csr.h"
 #include "nitrox_common.h"
 #include "nitrox_hal.h"
+#include "nitrox_mbx.h"
 
 /**
  * One vector for each type of ring
@@ -220,7 +221,8 @@ static void nps_core_int_tasklet(unsigned long data)
  */
 static irqreturn_t nps_core_int_isr(int irq, void *data)
 {
-	struct nitrox_device *ndev = data;
+	struct nitrox_q_vector *qvec = data;
+	struct nitrox_device *ndev = qvec->ndev;
 	union nps_core_int_active core_int;
 
 	core_int.value = nitrox_read_csr(ndev, NPS_CORE_INT_ACTIVE);
@@ -246,6 +248,10 @@ static irqreturn_t nps_core_int_isr(int irq, void *data)
 	if (core_int.s.bmi)
 		clear_bmi_err_intr(ndev);
 
+	/* Mailbox interrupt */
+	if (core_int.s.mbox)
+		nitrox_pf2vf_mbox_handler(ndev);
+
 	/* If more work callback the ISR, set resend */
 	core_int.s.resend = 1;
 	nitrox_write_csr(ndev, NPS_CORE_INT_ACTIVE, core_int.value);