diff mbox series

[v2,05/13] arm: gic: Remove references to NVIC

Message ID 1487262963-11519-6-git-send-email-peter.maydell@linaro.org
State Superseded
Headers show
Series Rewrite NVIC to not depend on the GIC | expand

Commit Message

Peter Maydell Feb. 16, 2017, 4:35 p.m. UTC 
From: Michael Davidsaver <mdavidsaver@gmail.com>


Now that the NVIC is its own separate implementation, we can
clean up the GIC code by removing REV_NVIC and conditionals
which use it.

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

---
 hw/intc/gic_internal.h   |  7 ++-----
 hw/intc/arm_gic.c        | 31 +++++--------------------------
 hw/intc/arm_gic_common.c | 23 ++++++++---------------
 3 files changed, 15 insertions(+), 46 deletions(-)

-- 
2.7.4

Comments

Philippe Mathieu-Daudé April 17, 2017, 4:10 a.m. UTC | #1 
On 02/16/2017 01:35 PM, Peter Maydell wrote:
> From: Michael Davidsaver <mdavidsaver@gmail.com>

>

> Now that the NVIC is its own separate implementation, we can

> clean up the GIC code by removing REV_NVIC and conditionals

> which use it.

>

> Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>

> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>


Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>


> ---

>  hw/intc/gic_internal.h   |  7 ++-----

>  hw/intc/arm_gic.c        | 31 +++++--------------------------

>  hw/intc/arm_gic_common.c | 23 ++++++++---------------

>  3 files changed, 15 insertions(+), 46 deletions(-)

>

> diff --git a/hw/intc/gic_internal.h b/hw/intc/gic_internal.h

> index 3f31174..7fe87b1 100644

> --- a/hw/intc/gic_internal.h

> +++ b/hw/intc/gic_internal.h

> @@ -25,9 +25,7 @@

>

>  #define ALL_CPU_MASK ((unsigned)(((1 << GIC_NCPU) - 1)))

>

> -/* The NVIC has 16 internal vectors.  However these are not exposed

> -   through the normal GIC interface.  */

> -#define GIC_BASE_IRQ ((s->revision == REV_NVIC) ? 32 : 0)

> +#define GIC_BASE_IRQ 0

>

>  #define GIC_SET_ENABLED(irq, cm) s->irq_state[irq].enabled |= (cm)

>  #define GIC_CLEAR_ENABLED(irq, cm) s->irq_state[irq].enabled &= ~(cm)

> @@ -75,7 +73,6 @@

>

>  /* The special cases for the revision property: */

>  #define REV_11MPCORE 0

> -#define REV_NVIC 0xffffffff

>

>  void gic_set_pending_private(GICState *s, int cpu, int irq);

>  uint32_t gic_acknowledge_irq(GICState *s, int cpu, MemTxAttrs attrs);

> @@ -87,7 +84,7 @@ void gic_set_priority(GICState *s, int cpu, int irq, uint8_t val,

>

>  static inline bool gic_test_pending(GICState *s, int irq, int cm)

>  {

> -    if (s->revision == REV_NVIC || s->revision == REV_11MPCORE) {

> +    if (s->revision == REV_11MPCORE) {

>          return s->irq_state[irq].pending & cm;

>      } else {

>          /* Edge-triggered interrupts are marked pending on a rising edge, but

> diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c

> index 521aac3..8e5a9d8 100644

> --- a/hw/intc/arm_gic.c

> +++ b/hw/intc/arm_gic.c

> @@ -156,17 +156,6 @@ static void gic_set_irq_11mpcore(GICState *s, int irq, int level,

>      }

>  }

>

> -static void gic_set_irq_nvic(GICState *s, int irq, int level,

> -                                 int cm, int target)

> -{

> -    if (level) {

> -        GIC_SET_LEVEL(irq, cm);

> -        GIC_SET_PENDING(irq, target);

> -    } else {

> -        GIC_CLEAR_LEVEL(irq, cm);

> -    }

> -}

> -

>  static void gic_set_irq_generic(GICState *s, int irq, int level,

>                                  int cm, int target)

>  {

> @@ -214,8 +203,6 @@ static void gic_set_irq(void *opaque, int irq, int level)

>

>      if (s->revision == REV_11MPCORE) {

>          gic_set_irq_11mpcore(s, irq, level, cm, target);

> -    } else if (s->revision == REV_NVIC) {

> -        gic_set_irq_nvic(s, irq, level, cm, target);

>      } else {

>          gic_set_irq_generic(s, irq, level, cm, target);

>      }

> @@ -367,7 +354,7 @@ uint32_t gic_acknowledge_irq(GICState *s, int cpu, MemTxAttrs attrs)

>          return 1023;

>      }

>

> -    if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {

> +    if (s->revision == REV_11MPCORE) {

>          /* Clear pending flags for both level and edge triggered interrupts.

>           * Level triggered IRQs will be reasserted once they become inactive.

>           */

> @@ -589,11 +576,6 @@ void gic_complete_irq(GICState *s, int cpu, int irq, MemTxAttrs attrs)

>              DPRINTF("Set %d pending mask %x\n", irq, cm);

>              GIC_SET_PENDING(irq, cm);

>          }

> -    } else if (s->revision == REV_NVIC) {

> -        if (GIC_TEST_LEVEL(irq, cm)) {

> -            DPRINTF("Set nvic %d pending mask %x\n", irq, cm);

> -            GIC_SET_PENDING(irq, cm);

> -        }

>      }

>

>      group = gic_has_groups(s) && GIC_TEST_GROUP(irq, cm);

> @@ -768,7 +750,7 @@ static uint32_t gic_dist_readb(void *opaque, hwaddr offset, MemTxAttrs attrs)

>      } else if (offset < 0xf10) {

>          goto bad_reg;

>      } else if (offset < 0xf30) {

> -        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {

> +        if (s->revision == REV_11MPCORE) {

>              goto bad_reg;

>          }

>

> @@ -802,9 +784,6 @@ static uint32_t gic_dist_readb(void *opaque, hwaddr offset, MemTxAttrs attrs)

>              case 2:

>                  res = gic_id_gicv2[(offset - 0xfd0) >> 2];

>                  break;

> -            case REV_NVIC:

> -                /* Shouldn't be able to get here */

> -                abort();

>              default:

>                  res = 0;

>              }

> @@ -1028,7 +1007,7 @@ static void gic_dist_writeb(void *opaque, hwaddr offset,

>                  continue; /* Ignore Non-secure access of Group0 IRQ */

>              }

>

> -            if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {

> +            if (s->revision == REV_11MPCORE) {

>                  if (value & (1 << (i * 2))) {

>                      GIC_SET_MODEL(irq + i);

>                  } else {

> @@ -1046,7 +1025,7 @@ static void gic_dist_writeb(void *opaque, hwaddr offset,

>          goto bad_reg;

>      } else if (offset < 0xf20) {

>          /* GICD_CPENDSGIRn */

> -        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {

> +        if (s->revision == REV_11MPCORE) {

>              goto bad_reg;

>          }

>          irq = (offset - 0xf10);

> @@ -1060,7 +1039,7 @@ static void gic_dist_writeb(void *opaque, hwaddr offset,

>          }

>      } else if (offset < 0xf30) {

>          /* GICD_SPENDSGIRn */

> -        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {

> +        if (s->revision == REV_11MPCORE) {

>              goto bad_reg;

>          }

>          irq = (offset - 0xf20);

> diff --git a/hw/intc/arm_gic_common.c b/hw/intc/arm_gic_common.c

> index 4a8df44..70f1134 100644

> --- a/hw/intc/arm_gic_common.c

> +++ b/hw/intc/arm_gic_common.c

> @@ -99,9 +99,7 @@ void gic_init_irqs_and_mmio(GICState *s, qemu_irq_handler handler,

>       *  [N+32..N+63] PPIs for CPU 1

>       *   ...

>       */

> -    if (s->revision != REV_NVIC) {

> -        i += (GIC_INTERNAL * s->num_cpu);

> -    }

> +    i += (GIC_INTERNAL * s->num_cpu);

>      qdev_init_gpio_in(DEVICE(s), handler, i);

>

>      for (i = 0; i < s->num_cpu; i++) {

> @@ -121,16 +119,12 @@ void gic_init_irqs_and_mmio(GICState *s, qemu_irq_handler handler,

>      memory_region_init_io(&s->iomem, OBJECT(s), ops, s, "gic_dist", 0x1000);

>      sysbus_init_mmio(sbd, &s->iomem);

>

> -    if (s->revision != REV_NVIC) {

> -        /* This is the main CPU interface "for this core". It is always

> -         * present because it is required by both software emulation and KVM.

> -         * NVIC is not handled here because its CPU interface is different,

> -         * neither it can use KVM.

> -         */

> -        memory_region_init_io(&s->cpuiomem[0], OBJECT(s), ops ? &ops[1] : NULL,

> -                              s, "gic_cpu", s->revision == 2 ? 0x2000 : 0x100);

> -        sysbus_init_mmio(sbd, &s->cpuiomem[0]);

> -    }

> +    /* This is the main CPU interface "for this core". It is always

> +     * present because it is required by both software emulation and KVM.

> +     */

> +    memory_region_init_io(&s->cpuiomem[0], OBJECT(s), ops ? &ops[1] : NULL,

> +                          s, "gic_cpu", s->revision == 2 ? 0x2000 : 0x100);

> +    sysbus_init_mmio(sbd, &s->cpuiomem[0]);

>  }

>

>  static void arm_gic_common_realize(DeviceState *dev, Error **errp)

> @@ -162,7 +156,7 @@ static void arm_gic_common_realize(DeviceState *dev, Error **errp)

>      }

>

>      if (s->security_extn &&

> -        (s->revision == REV_11MPCORE || s->revision == REV_NVIC)) {

> +        (s->revision == REV_11MPCORE)) {

>          error_setg(errp, "this GIC revision does not implement "

>                     "the security extensions");

>          return;

> @@ -255,7 +249,6 @@ static Property arm_gic_common_properties[] = {

>      DEFINE_PROP_UINT32("num-irq", GICState, num_irq, 32),

>      /* Revision can be 1 or 2 for GIC architecture specification

>       * versions 1 or 2, or 0 to indicate the legacy 11MPCore GIC.

> -     * (Internally, 0xffffffff also indicates "not a GIC but an NVIC".)

>       */

>      DEFINE_PROP_UINT32("revision", GICState, revision, 1),

>      /* True if the GIC should implement the security extensions */

>
diff mbox series

Patch

diff --git a/hw/intc/gic_internal.h b/hw/intc/gic_internal.h
index 3f31174..7fe87b1 100644
--- a/hw/intc/gic_internal.h
+++ b/hw/intc/gic_internal.h
@@ -25,9 +25,7 @@ 
 
 #define ALL_CPU_MASK ((unsigned)(((1 << GIC_NCPU) - 1)))
 
-/* The NVIC has 16 internal vectors.  However these are not exposed
-   through the normal GIC interface.  */
-#define GIC_BASE_IRQ ((s->revision == REV_NVIC) ? 32 : 0)
+#define GIC_BASE_IRQ 0
 
 #define GIC_SET_ENABLED(irq, cm) s->irq_state[irq].enabled |= (cm)
 #define GIC_CLEAR_ENABLED(irq, cm) s->irq_state[irq].enabled &= ~(cm)
@@ -75,7 +73,6 @@ 
 
 /* The special cases for the revision property: */
 #define REV_11MPCORE 0
-#define REV_NVIC 0xffffffff
 
 void gic_set_pending_private(GICState *s, int cpu, int irq);
 uint32_t gic_acknowledge_irq(GICState *s, int cpu, MemTxAttrs attrs);
@@ -87,7 +84,7 @@  void gic_set_priority(GICState *s, int cpu, int irq, uint8_t val,
 
 static inline bool gic_test_pending(GICState *s, int irq, int cm)
 {
-    if (s->revision == REV_NVIC || s->revision == REV_11MPCORE) {
+    if (s->revision == REV_11MPCORE) {
         return s->irq_state[irq].pending & cm;
     } else {
         /* Edge-triggered interrupts are marked pending on a rising edge, but
diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c
index 521aac3..8e5a9d8 100644
--- a/hw/intc/arm_gic.c
+++ b/hw/intc/arm_gic.c
@@ -156,17 +156,6 @@  static void gic_set_irq_11mpcore(GICState *s, int irq, int level,
     }
 }
 
-static void gic_set_irq_nvic(GICState *s, int irq, int level,
-                                 int cm, int target)
-{
-    if (level) {
-        GIC_SET_LEVEL(irq, cm);
-        GIC_SET_PENDING(irq, target);
-    } else {
-        GIC_CLEAR_LEVEL(irq, cm);
-    }
-}
-
 static void gic_set_irq_generic(GICState *s, int irq, int level,
                                 int cm, int target)
 {
@@ -214,8 +203,6 @@  static void gic_set_irq(void *opaque, int irq, int level)
 
     if (s->revision == REV_11MPCORE) {
         gic_set_irq_11mpcore(s, irq, level, cm, target);
-    } else if (s->revision == REV_NVIC) {
-        gic_set_irq_nvic(s, irq, level, cm, target);
     } else {
         gic_set_irq_generic(s, irq, level, cm, target);
     }
@@ -367,7 +354,7 @@  uint32_t gic_acknowledge_irq(GICState *s, int cpu, MemTxAttrs attrs)
         return 1023;
     }
 
-    if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
+    if (s->revision == REV_11MPCORE) {
         /* Clear pending flags for both level and edge triggered interrupts.
          * Level triggered IRQs will be reasserted once they become inactive.
          */
@@ -589,11 +576,6 @@  void gic_complete_irq(GICState *s, int cpu, int irq, MemTxAttrs attrs)
             DPRINTF("Set %d pending mask %x\n", irq, cm);
             GIC_SET_PENDING(irq, cm);
         }
-    } else if (s->revision == REV_NVIC) {
-        if (GIC_TEST_LEVEL(irq, cm)) {
-            DPRINTF("Set nvic %d pending mask %x\n", irq, cm);
-            GIC_SET_PENDING(irq, cm);
-        }
     }
 
     group = gic_has_groups(s) && GIC_TEST_GROUP(irq, cm);
@@ -768,7 +750,7 @@  static uint32_t gic_dist_readb(void *opaque, hwaddr offset, MemTxAttrs attrs)
     } else if (offset < 0xf10) {
         goto bad_reg;
     } else if (offset < 0xf30) {
-        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
+        if (s->revision == REV_11MPCORE) {
             goto bad_reg;
         }
 
@@ -802,9 +784,6 @@  static uint32_t gic_dist_readb(void *opaque, hwaddr offset, MemTxAttrs attrs)
             case 2:
                 res = gic_id_gicv2[(offset - 0xfd0) >> 2];
                 break;
-            case REV_NVIC:
-                /* Shouldn't be able to get here */
-                abort();
             default:
                 res = 0;
             }
@@ -1028,7 +1007,7 @@  static void gic_dist_writeb(void *opaque, hwaddr offset,
                 continue; /* Ignore Non-secure access of Group0 IRQ */
             }
 
-            if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
+            if (s->revision == REV_11MPCORE) {
                 if (value & (1 << (i * 2))) {
                     GIC_SET_MODEL(irq + i);
                 } else {
@@ -1046,7 +1025,7 @@  static void gic_dist_writeb(void *opaque, hwaddr offset,
         goto bad_reg;
     } else if (offset < 0xf20) {
         /* GICD_CPENDSGIRn */
-        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
+        if (s->revision == REV_11MPCORE) {
             goto bad_reg;
         }
         irq = (offset - 0xf10);
@@ -1060,7 +1039,7 @@  static void gic_dist_writeb(void *opaque, hwaddr offset,
         }
     } else if (offset < 0xf30) {
         /* GICD_SPENDSGIRn */
-        if (s->revision == REV_11MPCORE || s->revision == REV_NVIC) {
+        if (s->revision == REV_11MPCORE) {
             goto bad_reg;
         }
         irq = (offset - 0xf20);
diff --git a/hw/intc/arm_gic_common.c b/hw/intc/arm_gic_common.c
index 4a8df44..70f1134 100644
--- a/hw/intc/arm_gic_common.c
+++ b/hw/intc/arm_gic_common.c
@@ -99,9 +99,7 @@  void gic_init_irqs_and_mmio(GICState *s, qemu_irq_handler handler,
      *  [N+32..N+63] PPIs for CPU 1
      *   ...
      */
-    if (s->revision != REV_NVIC) {
-        i += (GIC_INTERNAL * s->num_cpu);
-    }
+    i += (GIC_INTERNAL * s->num_cpu);
     qdev_init_gpio_in(DEVICE(s), handler, i);
 
     for (i = 0; i < s->num_cpu; i++) {
@@ -121,16 +119,12 @@  void gic_init_irqs_and_mmio(GICState *s, qemu_irq_handler handler,
     memory_region_init_io(&s->iomem, OBJECT(s), ops, s, "gic_dist", 0x1000);
     sysbus_init_mmio(sbd, &s->iomem);
 
-    if (s->revision != REV_NVIC) {
-        /* This is the main CPU interface "for this core". It is always
-         * present because it is required by both software emulation and KVM.
-         * NVIC is not handled here because its CPU interface is different,
-         * neither it can use KVM.
-         */
-        memory_region_init_io(&s->cpuiomem[0], OBJECT(s), ops ? &ops[1] : NULL,
-                              s, "gic_cpu", s->revision == 2 ? 0x2000 : 0x100);
-        sysbus_init_mmio(sbd, &s->cpuiomem[0]);
-    }
+    /* This is the main CPU interface "for this core". It is always
+     * present because it is required by both software emulation and KVM.
+     */
+    memory_region_init_io(&s->cpuiomem[0], OBJECT(s), ops ? &ops[1] : NULL,
+                          s, "gic_cpu", s->revision == 2 ? 0x2000 : 0x100);
+    sysbus_init_mmio(sbd, &s->cpuiomem[0]);
 }
 
 static void arm_gic_common_realize(DeviceState *dev, Error **errp)
@@ -162,7 +156,7 @@  static void arm_gic_common_realize(DeviceState *dev, Error **errp)
     }
 
     if (s->security_extn &&
-        (s->revision == REV_11MPCORE || s->revision == REV_NVIC)) {
+        (s->revision == REV_11MPCORE)) {
         error_setg(errp, "this GIC revision does not implement "
                    "the security extensions");
         return;
@@ -255,7 +249,6 @@  static Property arm_gic_common_properties[] = {
     DEFINE_PROP_UINT32("num-irq", GICState, num_irq, 32),
     /* Revision can be 1 or 2 for GIC architecture specification
      * versions 1 or 2, or 0 to indicate the legacy 11MPCore GIC.
-     * (Internally, 0xffffffff also indicates "not a GIC but an NVIC".)
      */
     DEFINE_PROP_UINT32("revision", GICState, revision, 1),
     /* True if the GIC should implement the security extensions */