cris: First shot at qdev for CRIS interrupts.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

cris: First shot at qdev for CRIS interrupts.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Edgar E. Iglesias
1 parent 96d7ddde
Showing 6 changed files with 114 additions and 48 deletions
Makefile.target
hw/axis_dev88.c
hw/cris_pic_cpu.c
hw/etraxfs.c
hw/etraxfs.h
hw/etraxfs_pic.c
@@ -615,7 +615,7 @@ CPPFLAGS += -DHAS_AUDIO -DHAS_AUDIO_CHOICE
 endif
 ifeq ($(TARGET_BASE_ARCH), cris)
 # Boards
-OBJS+= etraxfs.o axis_dev88.o
+OBJS+= cris_pic_cpu.o etraxfs.o axis_dev88.o
 # IO blocks
 OBJS+= etraxfs_dma.o
@@ -254,7 +254,9 @@ void axisdev88_init (ram_addr_t ram_size,
                      const char *initrd_filename, const char *cpu_model)
 {
     CPUState *env;
-    qemu_irq *irq, *nmi;
+    DeviceState *dev;
+    SysBusDevice *s;
+    qemu_irq irq[30], nmi[2], *cpu_irq;
     void *etraxfs_dmac;
     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
     int kernel_size;
@@ -292,8 +294,20 @@ void axisdev88_init (ram_addr_t ram_size,
     cpu_register_physical_memory(0x3001a000, 0x5c, gpio_regs);
-    irq = etraxfs_pic_init(env, 0x3001c000);
-    nmi = irq + 30;
+    cpu_irq = cris_pic_init_cpu(env);
+    dev = qdev_create(NULL, "etraxfs,pic");
+    /* FIXME: Is there a proper way to signal vectors to the CPU core?  */
+    qdev_set_prop_ptr(dev, "interrupt_vector", &env->interrupt_vector);
+    qdev_init(dev);
+    s = sysbus_from_qdev(dev);
+    sysbus_mmio_map(s, 0, 0x3001c000);
+    sysbus_connect_irq(s, 0, cpu_irq[0]);
+    sysbus_connect_irq(s, 1, cpu_irq[1]);
+    for (i = 0; i < 30; i++) {
+        irq[i] = qdev_get_irq_sink(dev, i);
+    }
+    nmi[0] = qdev_get_irq_sink(dev, 30);
+    nmi[1] = qdev_get_irq_sink(dev, 31);
     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
     for (i = 0; i < 10; i++) {
+/*
+ * QEMU CRIS CPU interrupt wrapper logic.
+ *
+ * Copyright (c) 2009 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw.h"
+#include "pc.h"
+#include "etraxfs.h"
+
+#define D(x)
+
+void pic_info(Monitor *mon)
+{}
+void irq_info(Monitor *mon)
+{}
+
+static void cris_pic_cpu_handler(void *opaque, int irq, int level)
+{
+    CPUState *env = (CPUState *)opaque;
+    int type = irq ? CPU_INTERRUPT_NMI : CPU_INTERRUPT_HARD;
+
+    if (level)
+        cpu_interrupt(env, type);
+    else
+        cpu_reset_interrupt(env, type);
+}
+
+qemu_irq *cris_pic_init_cpu(CPUState *env)
+{
+    return qemu_allocate_irqs(cris_pic_cpu_handler, env, 2);
+}
@@ -48,8 +48,9 @@ void bareetraxfs_init (ram_addr_t ram_size,
                        const char *kernel_filename, const char *kernel_cmdline,
                        const char *initrd_filename, const char *cpu_model)
 {
+    DeviceState *dev;
     CPUState *env;
-    qemu_irq *irq, *nmi; 
+    qemu_irq irq[30], nmi[2], *cpu_irq; 
     void *etraxfs_dmac;
     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
     int kernel_size;
@@ -83,8 +84,16 @@ void bareetraxfs_init (ram_addr_t ram_size,
                           FLASH_SIZE >> 16,
                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
                           0x555, 0x2aa);
-    irq = etraxfs_pic_init(env, 0x3001c000);
-    nmi = irq + 30;
+    cpu_irq = cris_pic_init_cpu(env);
+    dev = sysbus_create_varargs("etraxfs,pic", 0x3001c000,
+                                cpu_irq[0], cpu_irq[1], NULL);
+    /* FIXME: Is there a proper way to signal vectors to the CPU core?  */
+    qdev_set_prop_ptr(dev, "interrupt_vector", &env->interrupt_vector);
+    for (i = 0; i < 30; i++) {
+        irq[i] = qdev_get_irq_sink(dev, i);
+    }
+    nmi[0] = qdev_get_irq_sink(dev, 30);
+    nmi[1] = qdev_get_irq_sink(dev, 31);
     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
     for (i = 0; i < 10; i++) {
@@ -24,6 +24,6 @@
 #include "etraxfs_dma.h"
-qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
+qemu_irq *cris_pic_init_cpu(CPUState *env);
 void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
                        target_phys_addr_t base, int phyaddr);
@@ -22,7 +22,7 @@
  * THE SOFTWARE.
  */
-#include <stdio.h>
+#include "sysbus.h"
 #include "hw.h"
 #include "pc.h"
 #include "etraxfs.h"
@@ -36,15 +36,17 @@
 #define R_R_GURU    4
 #define R_MAX       5
-struct fs_pic_state
+struct etrax_pic
 {
-    CPUState *env;
+    SysBusDevice busdev;
+    uint32_t *interrupt_vector;
+    qemu_irq parent_irq;
+    qemu_irq parent_nmi;
     uint32_t regs[R_MAX];
 };
-static void pic_update(struct fs_pic_state *fs)
+static void pic_update(struct etrax_pic *fs)
 {   
-    CPUState *env = fs->env;
     uint32_t vector = 0;
     int i;
@@ -66,21 +68,17 @@ static void pic_update(struct fs_pic_state *fs)
             }
             mv >>= 1;
         }
-        if (vector) {
-            env->interrupt_vector = vector;
-            D(printf("%s vector=%x\n", __func__, vector));
-            cpu_interrupt(env, CPU_INTERRUPT_HARD);
-        }
-    } else {
-        env->interrupt_vector = 0;
-        cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
-        D(printf("%s reset irqs\n", __func__));
     }
+
+    if (fs->interrupt_vector) {
+        *fs->interrupt_vector = vector;
+    }
+    qemu_set_irq(fs->parent_irq, !!vector);
 }
 static uint32_t pic_readl (void *opaque, target_phys_addr_t addr)
 {
-    struct fs_pic_state *fs = opaque;
+    struct etrax_pic *fs = opaque;
     uint32_t rval;
     rval = fs->regs[addr >> 2];
@@ -91,7 +89,7 @@ static uint32_t pic_readl (void *opaque, target_phys_addr_t addr)
 static void
 pic_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
 {
-    struct fs_pic_state *fs = opaque;
+    struct etrax_pic *fs = opaque;
     D(printf("%s addr=%x val=%x\n", __func__, addr, value));
     if (addr == R_RW_MASK) {
@@ -110,18 +108,9 @@ static CPUWriteMemoryFunc *pic_write[] = {
     &pic_writel,
 };
-void pic_info(Monitor *mon)
-{
-}
-
-void irq_info(Monitor *mon)
-{
-}
-
 static void nmi_handler(void *opaque, int irq, int level)
 {   
-    struct fs_pic_state *fs = (void *)opaque;
-    CPUState *env = fs->env;
+    struct etrax_pic *fs = (void *)opaque;
     uint32_t mask;
     mask = 1 << irq;
@@ -130,15 +119,12 @@ static void nmi_handler(void *opaque, int irq, int level)
     else
         fs->regs[R_R_NMI] &= ~mask;
-    if (fs->regs[R_R_NMI])
-        cpu_interrupt(env, CPU_INTERRUPT_NMI);
-    else
-        cpu_reset_interrupt(env, CPU_INTERRUPT_NMI);
+    qemu_set_irq(fs->parent_nmi, !!fs->regs[R_R_NMI]);
 }
 static void irq_handler(void *opaque, int irq, int level)
 {   
-    struct fs_pic_state *fs = (void *)opaque;
+    struct etrax_pic *fs = (void *)opaque;
     if (irq >= 30)
         return nmi_handler(opaque, irq, level);
@@ -149,17 +135,24 @@ static void irq_handler(void *opaque, int irq, int level)
     pic_update(fs);
 }
-qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base)
+static void etraxfs_pic_init(SysBusDevice *dev)
 {
-    struct fs_pic_state *fs = NULL;
-    qemu_irq *irq;
+    struct etrax_pic *s = FROM_SYSBUS(typeof (*s), dev);
     int intr_vect_regs;
-    fs = qemu_mallocz(sizeof *fs);
-    fs->env = env;
-    irq = qemu_allocate_irqs(irq_handler, fs, 32);
+    s->interrupt_vector = qdev_get_prop_ptr(&dev->qdev, "interrupt_vector");
+    qdev_init_irq_sink(&dev->qdev, irq_handler, 32);
+    sysbus_init_irq(dev, &s->parent_irq);
+    sysbus_init_irq(dev, &s->parent_nmi);
-    intr_vect_regs = cpu_register_io_memory(0, pic_read, pic_write, fs);
-    cpu_register_physical_memory(base, R_MAX * 4, intr_vect_regs);
-    return irq;
+    intr_vect_regs = cpu_register_io_memory(0, pic_read, pic_write, s);
+    sysbus_init_mmio(dev, R_MAX * 4, intr_vect_regs);
 }
+
+static void etraxfs_pic_register(void)
+{
+    sysbus_register_dev("etraxfs,pic", sizeof (struct etrax_pic),
+                        etraxfs_pic_init);
+}
+
+device_init(etraxfs_pic_register)