[PATCH v2 05/10] net: cadence_gem: Set ISR according to queue in use

[Sai Pavan Boddu]

Set ISR according to queue in use, added interrupt support for
all queues.

Signed-off-by: Sai Pavan Boddu <sai.pavan.bo...@xilinx.com>
---
 hw/net/cadence_gem.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index c532a14..beb38ec 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -896,7 +896,13 @@ static void gem_get_rx_desc(CadenceGEMState *s, int q)
     if (rx_desc_get_ownership(s->rx_desc[q]) == 1) {
         DB_PRINT("descriptor 0x%" HWADDR_PRIx " owned by sw.\n", desc_addr);
         s->regs[GEM_RXSTATUS] |= GEM_RXSTATUS_NOBUF;
-        s->regs[GEM_ISR] |= GEM_INT_RXUSED & ~(s->regs[GEM_IMR]);
+        if (q == 0) {
+            s->regs[GEM_ISR] |= GEM_INT_RXUSED & ~(s->regs[GEM_IMR]);
+        } else {
+            s->regs[GEM_INT_Q1_STATUS + q - 1] |= GEM_INT_RXUSED &
+                                          ~(s->regs[GEM_INT_Q1_MASK + q - 1]);
+        }
+
         /* Handle interrupt consequences */
         gem_update_int_status(s);
     }
@@ -1071,8 +1077,12 @@ static ssize_t gem_receive(NetClientState *nc, const 
uint8_t *buf, size_t size)
     gem_receive_updatestats(s, buf, size);
 
     s->regs[GEM_RXSTATUS] |= GEM_RXSTATUS_FRMRCVD;
-    s->regs[GEM_ISR] |= GEM_INT_RXCMPL & ~(s->regs[GEM_IMR]);
-
+    if (q == 0) {
+        s->regs[GEM_ISR] |= GEM_INT_RXCMPL & ~(s->regs[GEM_IMR]);
+    } else {
+        s->regs[GEM_INT_Q1_STATUS + q - 1] |= GEM_INT_RXCMPL &
+                                      ~(s->regs[GEM_INT_Q1_MASK + q - 1]);
+    }
     /* Handle interrupt consequences */
     gem_update_int_status(s);
 
@@ -1223,12 +1233,12 @@ static void gem_transmit(CadenceGEMState *s)
                 DB_PRINT("TX descriptor next: 0x%08x\n", s->tx_desc_addr[q]);
 
                 s->regs[GEM_TXSTATUS] |= GEM_TXSTATUS_TXCMPL;
-                s->regs[GEM_ISR] |= GEM_INT_TXCMPL & ~(s->regs[GEM_IMR]);
-
+                if (q == 0) {
+                    s->regs[GEM_ISR] |= GEM_INT_TXCMPL & ~(s->regs[GEM_IMR]);
+                } else {
                 /* Update queue interrupt status */
-                if (s->num_priority_queues > 1) {
-                    s->regs[GEM_INT_Q1_STATUS + q] |=
-                            GEM_INT_TXCMPL & ~(s->regs[GEM_INT_Q1_MASK + q]);
+                    s->regs[GEM_INT_Q1_STATUS + q - 1] |=
+                            GEM_INT_TXCMPL & ~s->regs[GEM_INT_Q1_MASK + q - 1];
                 }
 
                 /* Handle interrupt consequences */
@@ -1280,7 +1290,10 @@ static void gem_transmit(CadenceGEMState *s)
 
         if (tx_desc_get_used(desc)) {
             s->regs[GEM_TXSTATUS] |= GEM_TXSTATUS_USED;
-            s->regs[GEM_ISR] |= GEM_INT_TXUSED & ~(s->regs[GEM_IMR]);
+            /* IRQ TXUSED is defined only for queue 0 */
+            if (q == 0) {
+                s->regs[GEM_ISR] |= GEM_INT_TXUSED & ~(s->regs[GEM_IMR]);
+            }
             gem_update_int_status(s);
         }
     }
-- 
2.7.4