From: Julien Grall <julien.grall@citrix.com>
Date: Tue, 29 Sep 2015 16:21:35 +0000 (+0100)
Subject: xen/arm: gic: Make it clear the GIC node is passed to make_hwdom_dt_node
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=a0542500a9ac029e46cce5f7c51378cf192c7055;p=people%2Fjulieng%2Fxen-unstable.git

xen/arm: gic: Make it clear the GIC node is passed to make_hwdom_dt_node

The callback make_hwdom_dt_node already has the GIC node in parameter.

Rather than using a weird mix between "dt_interrupt_controller" (aliased
to "gic") and "node", rename the callback parameter "node" to "gic" and
remove local GIC definitions in terms of the global
dt_interrupt_interrupt_controller.

Also, add an assert to gic_make_hwdom_dt_node to check that the GIC
really is the global dt_interrupt_controller.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/gic-hip04.c b/xen/arch/arm/gic-hip04.c
index c5ed54539d..e8cdcd4433 100644
--- a/xen/arch/arm/gic-hip04.c
+++ b/xen/arch/arm/gic-hip04.c
@@ -562,10 +562,9 @@ static void hip04gic_irq_set_affinity(struct irq_desc *desc, const cpumask_t *cp
 }
 
 static int hip04gic_make_hwdom_dt_node(const struct domain *d,
-                                       const struct dt_device_node *node,
+                                       const struct dt_device_node *gic,
                                        void *fdt)
 {
-    const struct dt_device_node *gic = dt_interrupt_controller;
     const void *compatible;
     u32 len;
     const __be32 *regs;
@@ -598,7 +597,7 @@ static int hip04gic_make_hwdom_dt_node(const struct domain *d,
         return -FDT_ERR_XEN(ENOENT);
     }
 
-    len = dt_cells_to_size(dt_n_addr_cells(node) + dt_n_size_cells(node));
+    len = dt_cells_to_size(dt_n_addr_cells(gic) + dt_n_size_cells(gic));
     len *= 2;
 
     res = fdt_property(fdt, "reg", regs, len);
diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
index 596126da8c..5841e59ce2 100644
--- a/xen/arch/arm/gic-v2.c
+++ b/xen/arch/arm/gic-v2.c
@@ -552,10 +552,9 @@ static void gicv2_irq_set_affinity(struct irq_desc *desc, const cpumask_t *cpu_m
 }
 
 static int gicv2_make_hwdom_dt_node(const struct domain *d,
-                                    const struct dt_device_node *node,
+                                    const struct dt_device_node *gic,
                                     void *fdt)
 {
-    const struct dt_device_node *gic = dt_interrupt_controller;
     const void *compatible = NULL;
     u32 len;
     const __be32 *regs;
@@ -584,7 +583,7 @@ static int gicv2_make_hwdom_dt_node(const struct domain *d,
         return -FDT_ERR_XEN(ENOENT);
     }
 
-    len = dt_cells_to_size(dt_n_addr_cells(node) + dt_n_size_cells(node));
+    len = dt_cells_to_size(dt_n_addr_cells(gic) + dt_n_size_cells(gic));
     len *= 2;
 
     res = fdt_property(fdt, "reg", regs, len);
diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index 1e3c19b13b..957c6e0afc 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1054,10 +1054,9 @@ static void gicv3_irq_set_affinity(struct irq_desc *desc, const cpumask_t *mask)
 }
 
 static int gicv3_make_hwdom_dt_node(const struct domain *d,
-                                    const struct dt_device_node *node,
+                                    const struct dt_device_node *gic,
                                     void *fdt)
 {
-    const struct dt_device_node *gic = dt_interrupt_controller;
     const void *compatible = NULL;
     uint32_t len;
     __be32 *new_cells, *tmp;
@@ -1084,7 +1083,7 @@ static int gicv3_make_hwdom_dt_node(const struct domain *d,
     if ( res )
         return res;
 
-    len = dt_cells_to_size(dt_n_addr_cells(node) + dt_n_size_cells(node));
+    len = dt_cells_to_size(dt_n_addr_cells(gic) + dt_n_size_cells(gic));
     /*
      * GIC has two memory regions: Distributor + rdist regions
      * CPU interface and virtual cpu interfaces accessesed as System registers
@@ -1097,10 +1096,10 @@ static int gicv3_make_hwdom_dt_node(const struct domain *d,
 
     tmp = new_cells;
 
-    dt_set_range(&tmp, node, d->arch.vgic.dbase, SZ_64K);
+    dt_set_range(&tmp, gic, d->arch.vgic.dbase, SZ_64K);
 
     for ( i = 0; i < d->arch.vgic.nr_regions; i++ )
-        dt_set_range(&tmp, node, d->arch.vgic.rdist_regions[i].base,
+        dt_set_range(&tmp, gic, d->arch.vgic.rdist_regions[i].base,
                      d->arch.vgic.rdist_regions[i].size);
 
     res = fdt_property(fdt, "reg", new_cells, len);
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 1757193e0c..1e1e5ba6c0 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -702,10 +702,12 @@ void __cpuinit init_maintenance_interrupt(void)
 }
 
 int gic_make_hwdom_dt_node(const struct domain *d,
-                           const struct dt_device_node *node,
+                           const struct dt_device_node *gic,
                            void *fdt)
 {
-    return gic_hw_ops->make_hwdom_dt_node(d, node, fdt);
+    ASSERT(gic == dt_interrupt_controller);
+
+    return gic_hw_ops->make_hwdom_dt_node(d, gic, fdt);
 }
 
 /*
diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
index d343abf697..6d53f97fc0 100644
--- a/xen/include/asm-arm/gic.h
+++ b/xen/include/asm-arm/gic.h
@@ -350,13 +350,14 @@ struct gic_hw_operations {
     unsigned int (*read_apr)(int apr_reg);
     /* Secondary CPU init */
     int (*secondary_init)(void);
+    /* Create GIC node for the hardware domain */
     int (*make_hwdom_dt_node)(const struct domain *d,
-                              const struct dt_device_node *node, void *fdt);
+                              const struct dt_device_node *gic, void *fdt);
 };
 
 void register_gic_ops(const struct gic_hw_operations *ops);
 int gic_make_hwdom_dt_node(const struct domain *d,
-                           const struct dt_device_node *node,
+                           const struct dt_device_node *gic,
                            void *fdt);
 
 #endif /* __ASSEMBLY__ */