[Xen-changelog] [xen-unstable] xen/arm: pass the correct bit-per-interrupt argument to vgic_irq_rank

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
# Date 1352975126 0
# Node ID 008726e63e7df24a4c9fdb06fc7ee1a2c5c1cf81
# Parent  babb84d9a82efb0a59d26853323fc4af93afcd1f
xen/arm: pass the correct bit-per-interrupt argument to vgic_irq_rank

Use 1 for registers that have 1 bit per irq.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Committed-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---


diff -r babb84d9a82e -r 008726e63e7d xen/arch/arm/vgic.c
--- a/xen/arch/arm/vgic.c       Thu Nov 15 10:25:25 2012 +0000
+++ b/xen/arch/arm/vgic.c       Thu Nov 15 10:25:26 2012 +0000
@@ -47,6 +47,7 @@ static inline int REG_RANK_NR(int b, uin
     case 8: return n >> 3;
     case 4: return n >> 2;
     case 2: return n >> 1;
+    case 1: return n;
     default: BUG();
     }
 }
@@ -199,7 +200,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ISENABLER ... GICD_ISENABLERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ISENABLER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ISENABLER);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = rank->ienable;
@@ -208,7 +209,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ICENABLER ... GICD_ICENABLERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ICENABLER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ICENABLER);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = rank->ienable;
@@ -217,7 +218,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ISPENDR ... GICD_ISPENDRN:
         if ( dabt.size != 0 && dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ISPENDR);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ISPENDR);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = byte_read(rank->ipend, dabt.sign, offset);
@@ -226,7 +227,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ICPENDR ... GICD_ICPENDRN:
         if ( dabt.size != 0 && dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ICPENDR);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ICPENDR);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = byte_read(rank->ipend, dabt.sign, offset);
@@ -235,7 +236,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ISACTIVER ... GICD_ISACTIVERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ISACTIVER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ISACTIVER);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = rank->iactive;
@@ -244,7 +245,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_ICACTIVER ... GICD_ICACTIVERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ICACTIVER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ICACTIVER);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = rank->iactive;
@@ -296,7 +297,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_CPENDSGIR ... GICD_CPENDSGIRN:
         if ( dabt.size != 0 && dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_CPENDSGIR);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_CPENDSGIR);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = byte_read(rank->pendsgi, dabt.sign, offset);
@@ -305,7 +306,7 @@ static int vgic_distr_mmio_read(struct v
 
     case GICD_SPENDSGIR ... GICD_SPENDSGIRN:
         if ( dabt.size != 0 && dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_SPENDSGIR);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_SPENDSGIR);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
         *r = byte_read(rank->pendsgi, dabt.sign, offset);
@@ -400,7 +401,7 @@ static int vgic_distr_mmio_write(struct 
 
     case GICD_ISENABLER ... GICD_ISENABLERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ISENABLER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ISENABLER);
         if ( rank == NULL) goto write_ignore;
         vgic_lock_rank(v, rank);
         tr = rank->ienable;
@@ -411,7 +412,7 @@ static int vgic_distr_mmio_write(struct 
 
     case GICD_ICENABLER ... GICD_ICENABLERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ICENABLER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ICENABLER);
         if ( rank == NULL) goto write_ignore;
         vgic_lock_rank(v, rank);
         rank->ienable &= ~*r;
@@ -432,7 +433,7 @@ static int vgic_distr_mmio_write(struct 
 
     case GICD_ISACTIVER ... GICD_ISACTIVERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ISACTIVER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ISACTIVER);
         if ( rank == NULL) goto write_ignore;
         vgic_lock_rank(v, rank);
         rank->iactive &= ~*r;
@@ -441,7 +442,7 @@ static int vgic_distr_mmio_write(struct 
 
     case GICD_ICACTIVER ... GICD_ICACTIVERN:
         if ( dabt.size != 2 ) goto bad_width;
-        rank = vgic_irq_rank(v, 8, gicd_reg - GICD_ICACTIVER);
+        rank = vgic_irq_rank(v, 1, gicd_reg - GICD_ICACTIVER);
         if ( rank == NULL) goto write_ignore;
         vgic_lock_rank(v, rank);
         rank->iactive &= ~*r;

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