xen/arm: Remove REG macro in vgic driver

REG macro does not compute any value and offset
variable is no more required. Hence removed

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index 48551bf56d74d08c9a6b2e04b8c0a289c6825e3a..c8fbf9bf8689e9737f1c5144f159fdef14fa2817 100644 (file)
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -31,8 +31,6 @@
 #include <asm/gic.h>
 #include <asm/vgic.h>
 
-#define REG(n) (n)
-
 static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info);
 static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info);
 
@@ -156,8 +154,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
     struct cpu_user_regs *regs = guest_cpu_user_regs();
     register_t *r = select_user_reg(regs, dabt.reg);
     struct vgic_irq_rank *rank;
-    int offset = (int)(info->gpa - v->domain->arch.vgic.dbase);
-    int gicd_reg = REG(offset);
+    int gicd_reg = (int)(info->gpa - v->domain->arch.vgic.dbase);
 
     switch ( gicd_reg )
     {
@@ -185,7 +182,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         return 1;
 
     /* Implementation defined -- read as zero */
-    case REG(0x020) ... REG(0x03c):
+    case 0x020 ... 0x03c:
         goto read_as_zero;
 
     case GICD_IGROUPR ... GICD_IGROUPRN:
@@ -215,7 +212,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         rank = vgic_rank_offset(v, 1, gicd_reg - GICD_ISPENDR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
-        *r = vgic_byte_read(rank->ipend, dabt.sign, offset);
+        *r = vgic_byte_read(rank->ipend, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
@@ -224,7 +221,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         rank = vgic_rank_offset(v, 1, gicd_reg - GICD_ICPENDR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
-        *r = vgic_byte_read(rank->ipend, dabt.sign, offset);
+        *r = vgic_byte_read(rank->ipend, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
@@ -255,7 +252,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         *r = rank->itargets[REG_RANK_INDEX(8, gicd_reg - GICD_ITARGETSR,
                                            DABT_WORD)];
         if ( dabt.size == DABT_BYTE )
-            *r = vgic_byte_read(*r, dabt.sign, offset);
+            *r = vgic_byte_read(*r, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
@@ -268,7 +265,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         *r = rank->ipriority[REG_RANK_INDEX(8, gicd_reg - GICD_IPRIORITYR,
                                             DABT_WORD)];
         if ( dabt.size == DABT_BYTE )
-            *r = vgic_byte_read(*r, dabt.sign, offset);
+            *r = vgic_byte_read(*r, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
@@ -296,7 +293,7 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         rank = vgic_rank_offset(v, 1, gicd_reg - GICD_CPENDSGIR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
-        *r = vgic_byte_read(rank->pendsgi, dabt.sign, offset);
+        *r = vgic_byte_read(rank->pendsgi, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
@@ -305,12 +302,12 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         rank = vgic_rank_offset(v, 1, gicd_reg - GICD_SPENDSGIR, DABT_WORD);
         if ( rank == NULL) goto read_as_zero;
         vgic_lock_rank(v, rank);
-        *r = vgic_byte_read(rank->pendsgi, dabt.sign, offset);
+        *r = vgic_byte_read(rank->pendsgi, dabt.sign, gicd_reg);
         vgic_unlock_rank(v, rank);
         return 1;
 
     /* Implementation defined -- read as zero */
-    case REG(0xfd0) ... REG(0xfe4):
+    case 0xfd0 ... 0xfe4:
         goto read_as_zero;
 
     case GICD_ICPIDR2:
@@ -319,27 +316,27 @@ static int vgic_distr_mmio_read(struct vcpu *v, mmio_info_t *info)
         return 0;
 
     /* Implementation defined -- read as zero */
-    case REG(0xfec) ... REG(0xffc):
+    case 0xfec ... 0xffc:
         goto read_as_zero;
 
     /* Reserved -- read as zero */
-    case REG(0x00c) ... REG(0x01c):
-    case REG(0x040) ... REG(0x07c):
-    case REG(0x7fc):
-    case REG(0xbfc):
-    case REG(0xf04) ... REG(0xf0c):
-    case REG(0xf30) ... REG(0xfcc):
+    case 0x00c ... 0x01c:
+    case 0x040 ... 0x07c:
+    case 0x7fc:
+    case 0xbfc:
+    case 0xf04 ... 0xf0c:
+    case 0xf30 ... 0xfcc:
         goto read_as_zero;
 
     default:
         printk("vGICD: unhandled read r%d offset %#08x\n",
-               dabt.reg, offset);
+               dabt.reg, gicd_reg);
         return 0;
     }
 
 bad_width:
     printk("vGICD: bad read width %d r%d offset %#08x\n",
-           dabt.size, dabt.reg, offset);
+           dabt.size, dabt.reg, gicd_reg);
     domain_crash_synchronous();
     return 0;
 
@@ -464,8 +461,7 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
     struct cpu_user_regs *regs = guest_cpu_user_regs();
     register_t *r = select_user_reg(regs, dabt.reg);
     struct vgic_irq_rank *rank;
-    int offset = (int)(info->gpa - v->domain->arch.vgic.dbase);
-    int gicd_reg = REG(offset);
+    int gicd_reg = (int)(info->gpa - v->domain->arch.vgic.dbase);
     uint32_t tr;
 
     switch ( gicd_reg )
@@ -482,7 +478,7 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
         goto write_ignore;
 
     /* Implementation defined -- write ignored */
-    case REG(0x020) ... REG(0x03c):
+    case 0x020 ... 0x03c:
         goto write_ignore;
 
     case GICD_IGROUPR ... GICD_IGROUPRN:
@@ -558,7 +554,7 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
         else
         {
             tr = REG_RANK_INDEX(8, gicd_reg - GICD_ITARGETSR, DABT_WORD);
-            vgic_byte_write(&rank->itargets[tr], *r, offset);
+            vgic_byte_write(&rank->itargets[tr], *r, gicd_reg);
         }
         vgic_unlock_rank(v, rank);
         return 1;
@@ -574,7 +570,7 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
         else
         {
             tr = REG_RANK_INDEX(8, gicd_reg - GICD_IPRIORITYR, DABT_WORD);
-            vgic_byte_write(&rank->ipriority[tr], *r, offset);
+            vgic_byte_write(&rank->ipriority[tr], *r, gicd_reg);
         }
         vgic_unlock_rank(v, rank);
         return 1;
@@ -615,7 +611,7 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
         return 0;
 
     /* Implementation defined -- write ignored */
-    case REG(0xfd0) ... REG(0xfe4):
+    case 0xfd0 ... 0xfe4:
         goto write_ignore;
 
     /* R/O -- write ignore */
@@ -623,27 +619,27 @@ static int vgic_distr_mmio_write(struct vcpu *v, mmio_info_t *info)
         goto write_ignore;
 
     /* Implementation defined -- write ignored */
-    case REG(0xfec) ... REG(0xffc):
+    case 0xfec ... 0xffc:
         goto write_ignore;
 
     /* Reserved -- write ignored */
-    case REG(0x00c) ... REG(0x01c):
-    case REG(0x040) ... REG(0x07c):
-    case REG(0x7fc):
-    case REG(0xbfc):
-    case REG(0xf04) ... REG(0xf0c):
-    case REG(0xf30) ... REG(0xfcc):
+    case 0x00c ... 0x01c:
+    case 0x040 ... 0x07c:
+    case 0x7fc:
+    case 0xbfc:
+    case 0xf04 ... 0xf0c:
+    case 0xf30 ... 0xfcc:
         goto write_ignore;
 
     default:
         printk("vGICD: unhandled write r%d=%"PRIregister" offset %#08x\n",
-               dabt.reg, *r, offset);
+               dabt.reg, *r, gicd_reg);
         return 0;
     }
 
 bad_width:
     printk("vGICD: bad write width %d r%d=%"PRIregister" offset %#08x\n",
-           dabt.size, dabt.reg, *r, offset);
+           dabt.size, dabt.reg, *r, gicd_reg);
     domain_crash_synchronous();
     return 0;