ETRAX: Simplify PIC interface.

Instead of exporting a custom structure to represent different interrupt types, just export the irq array and have the top elements point to the NMI lines. Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

ETRAX: Simplify PIC interface.
Instead of exporting a custom structure to represent different interrupt types, just export the irq array and have the top elements point to the NMI lines. Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Edgar E. Iglesias
1 parent df84e4f3
Showing 4 changed files with 36 additions and 48 deletions
hw/axis_dev88.c
hw/etraxfs.c
hw/etraxfs.h
hw/etraxfs_pic.c
@@ -257,7 +257,7 @@ void axisdev88_init (ram_addr_t ram_size,
                      const char *initrd_filename, const char *cpu_model)
 {
     CPUState *env;
-    struct etraxfs_pic *pic;
+    qemu_irq *irq, *nmi;
     void *etraxfs_dmac;
     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
     int kernel_size;
@@ -295,18 +295,20 @@ void axisdev88_init (ram_addr_t ram_size,
     cpu_register_physical_memory(0x3001a000, 0x5c, gpio_regs);
  
  
-    pic = etraxfs_pic_init(env, 0x3001c000);
+    irq = etraxfs_pic_init(env, 0x3001c000);
+    nmi = irq + 30;
+
     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
     for (i = 0; i < 10; i++) {
         /* On ETRAX, odd numbered channels are inputs.  */
-        etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
+        etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
     }
  
     /* Add the two ethernet blocks.  */
-    eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000, 1);
+    eth[0] = etraxfs_eth_init(&nd_table[0], env, irq + 25, 0x30034000, 1);
     if (nb_nics > 1)
         eth[1] = etraxfs_eth_init(&nd_table[1], env,
-                                  pic->irq + 26, 0x30036000, 2);
+                                  irq + 26, 0x30036000, 2);
  
     /* The DMA Connector block is missing, hardwire things for now.  */
     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
@@ -317,12 +319,12 @@ void axisdev88_init (ram_addr_t ram_size,
     }
  
     /* 2 timers.  */
-    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000);
-    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000);
+    etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000);
+    etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000);
  
     for (i = 0; i < 4; i++) {
         if (serial_hds[i]) {
-            etraxfs_ser_init(env, pic->irq + 0x14 + i,
+            etraxfs_ser_init(env, irq + 0x14 + i,
                              serial_hds[i], 0x30026000 + i * 0x2000);
         }
     }
@@ -52,7 +52,7 @@ void bareetraxfs_init (ram_addr_t ram_size,
                        const char *initrd_filename, const char *cpu_model)
 {
     CPUState *env;
-    struct etraxfs_pic *pic;
+    qemu_irq *irq, *nmi; 
     void *etraxfs_dmac;
     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
     int kernel_size;
@@ -86,18 +86,20 @@ void bareetraxfs_init (ram_addr_t ram_size,
                           FLASH_SIZE >> 16,
                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
                           0x555, 0x2aa);
-    pic = etraxfs_pic_init(env, 0x3001c000);
+    irq = etraxfs_pic_init(env, 0x3001c000);
+    nmi = irq + 30;
+
     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
     for (i = 0; i < 10; i++) {
         /* On ETRAX, odd numbered channels are inputs.  */
-        etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
+        etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
     }
  
     /* Add the two ethernet blocks.  */
-    eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000, 1);
+    eth[0] = etraxfs_eth_init(&nd_table[0], env, irq + 25, 0x30034000, 1);
     if (nb_nics > 1)
         eth[1] = etraxfs_eth_init(&nd_table[1], env,
-                                  pic->irq + 26, 0x30036000, 2);
+                                  irq + 26, 0x30036000, 2);
  
     /* The DMA Connector block is missing, hardwire things for now.  */
     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
@@ -108,12 +110,12 @@ void bareetraxfs_init (ram_addr_t ram_size,
     }
  
     /* 2 timers.  */
-    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000);
-    etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000);
+    etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000);
+    etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000);
  
     for (i = 0; i < 4; i++) {
         if (serial_hds[i]) {
-            etraxfs_ser_init(env, pic->irq + 0x14 + i,
+            etraxfs_ser_init(env, irq + 0x14 + i,
                              serial_hds[i], 0x30026000 + i * 0x2000);
         }
     }
@@ -24,16 +24,7 @@
  
 #include "etraxfs_dma.h"
  
-struct etraxfs_pic
-{
-    qemu_irq *irq;
-    qemu_irq *nmi;
-    qemu_irq *guru;
-
-    void *internal;
-};
-
-struct etraxfs_pic *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
+qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
 void etraxfs_timer_init(CPUState *env, qemu_irq *irqs, qemu_irq *nmi,
                         target_phys_addr_t base);
 void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
@@ -118,16 +118,6 @@ void irq_info(Monitor *mon)
 {
 }
  
-static void irq_handler(void *opaque, int irq, int level)
-{	
-	struct fs_pic_state *fs = (void *)opaque;
-	irq -= 1;
-	fs->regs[R_R_VECT] &= ~(1 << irq);
-	fs->regs[R_R_VECT] |= (!!level << irq);
-
-	pic_update(fs);
-}
-
 static void nmi_handler(void *opaque, int irq, int level)
 {	
 	struct fs_pic_state *fs = (void *)opaque;
@@ -146,27 +136,30 @@ static void nmi_handler(void *opaque, int irq, int level)
 		cpu_reset_interrupt(env, CPU_INTERRUPT_NMI);
 }
  
-static void guru_handler(void *opaque, int irq, int level)
+static void irq_handler(void *opaque, int irq, int level)
 {	
-	hw_error("%s unsupported exception\n", __func__);
+	struct fs_pic_state *fs = (void *)opaque;
+
+	if (irq >= 30)
+		return nmi_handler(opaque, irq, level);
+
+	irq -= 1;
+	fs->regs[R_R_VECT] &= ~(1 << irq);
+	fs->regs[R_R_VECT] |= (!!level << irq);
+	pic_update(fs);
 }
  
-struct etraxfs_pic *etraxfs_pic_init(CPUState *env, target_phys_addr_t base)
+qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base)
 {
 	struct fs_pic_state *fs = NULL;
-	struct etraxfs_pic *pic = NULL;
+	qemu_irq *irq;
 	int intr_vect_regs;
  
-	pic = qemu_mallocz(sizeof *pic);
-	pic->internal = fs = qemu_mallocz(sizeof *fs);
-
+	fs = qemu_mallocz(sizeof *fs);
 	fs->env = env;
-	pic->irq = qemu_allocate_irqs(irq_handler, fs, 30);
-	pic->nmi = qemu_allocate_irqs(nmi_handler, fs, 2);
-	pic->guru = qemu_allocate_irqs(guru_handler, fs, 1);
+	irq = qemu_allocate_irqs(irq_handler, fs, 32);
  
 	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 pic;
+	return irq;
 }