Setup project skeleton

1 files changed, 64 insertions, 0 deletions

diff --git a/src/drv/ps1/irq/include/drv/ps1/irq.h b/src/drv/ps1/irq/include/drv/ps1/irq.h
new file mode 100644
index 0000000..0d40c7f
--- /dev/null
+++ b/src/drv/ps1/irq/include/drv/ps1/irq.h
@@ -0,0 +1,64 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DRV_PS1_IRQ_H
+#define DRV_PS1_IRQ_H
+
+#include <stdint.h>
+
+union drv_ps1_statmask
+{
+    struct
+    {
+        uint32_t vblank :1, gpu :1, cdrom :1, dma :1, tmr0 :1, tmr1 :1, tmr2 :1,
+            controller :1, sio :1, spu :1, lightpen :1, :21;
+    } bits;
+
+    uint32_t mask;
+};
+
+#define I_BASE(x) (0x1f801070 + (x))
+#define I_STAT ((volatile union drv_ps1_statmask *)I_BASE(0))
+#define I_MASK ((volatile union drv_ps1_statmask *)I_BASE(4))
+
+enum drv_ps1_irq
+{
+    IRQ_VBLANK,
+    IRQ_GPU,
+    IRQ_CDROM,
+    IRQ_DMA,
+    IRQ_TMR0,
+    IRQ_TMR1,
+    IRQ_TMR2,
+    IRQ_JOYPAD_MEMCARD,
+    IRQ_SIO,
+    IRQ_SPU,
+    IRQ_JOYPAD_IO
+};
+
+struct drv_ps1_irq_src
+{
+    int mask;
+    int (*fn)(void);
+    struct drv_ps1_irq_src *next;
+};
+
+int drv_ps1_irq_init(void);
+int drv_ps1_irq_set(struct drv_ps1_irq_src *src);
+
+#endif