patch-2.4.22 linux-2.4.22/include/asm-arm/arch-riscstation/irq.h
Next file: linux-2.4.22/include/asm-arm/arch-riscstation/irqs.h
Previous file: linux-2.4.22/include/asm-arm/arch-riscstation/io.h
Back to the patch index
Back to the overall index
- Lines: 210
- Date:
2003-08-25 04:44:43.000000000 -0700
- Orig file:
linux-2.4.21/include/asm-arm/arch-riscstation/irq.h
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/include/asm-arm/arch-riscstation/irq.h linux-2.4.22/include/asm-arm/arch-riscstation/irq.h
@@ -0,0 +1,209 @@
+/*
+ * linux/include/asm-arm/arch-rpc/irq.h
+ *
+ * Copyright (C) 1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Changelog:
+ * 10-10-1996 RMK Brought up to date with arch-sa110eval
+ * 22-08-1998 RMK Restructured IRQ routines
+ */
+#include <asm/hardware/iomd.h>
+#include <asm/io.h>
+
+#define fixup_irq(x) (x)
+
+static void rpc_mask_irq_ack_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKA);
+ iomd_writeb(mask, IOMD_IRQCLRA);
+}
+
+static void rpc_mask_irq_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKA);
+}
+
+static void rpc_unmask_irq_a(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << irq;
+ val = iomd_readb(IOMD_IRQMASKA);
+ iomd_writeb(val | mask, IOMD_IRQMASKA);
+}
+
+static void rpc_mask_irq_b(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKB);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKB);
+}
+
+static void rpc_unmask_irq_b(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKB);
+ iomd_writeb(val | mask, IOMD_IRQMASKB);
+}
+
+
+
+static void rpc_mask_irq_c(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKC);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKC);
+}
+
+static void rpc_unmask_irq_c(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKC);
+ iomd_writeb(val | mask, IOMD_IRQMASKC);
+}
+
+static void rpc_mask_irq_d(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKD);
+ iomd_writeb(val & ~mask, IOMD_IRQMASKD);
+}
+
+static void rpc_unmask_irq_d(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_IRQMASKD);
+ iomd_writeb(val | mask, IOMD_IRQMASKD);
+}
+
+static void rpc_mask_irq_dma(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_DMAMASK);
+ iomd_writeb(val & ~mask, IOMD_DMAMASK);
+}
+
+static void rpc_unmask_irq_dma(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_DMAMASK);
+ iomd_writeb(val | mask, IOMD_DMAMASK);
+}
+
+static void rpc_mask_irq_fiq(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_FIQMASK);
+ iomd_writeb(val & ~mask, IOMD_FIQMASK);
+}
+
+static void rpc_unmask_irq_fiq(unsigned int irq)
+{
+ unsigned int val, mask;
+
+ mask = 1 << (irq & 7);
+ val = iomd_readb(IOMD_FIQMASK);
+ iomd_writeb(val | mask, IOMD_FIQMASK);
+}
+
+static __inline__ void irq_init_irq(void)
+{
+ int irq;
+
+ iomd_writeb(0, IOMD_IRQMASKA);
+ iomd_writeb(0, IOMD_IRQMASKB);
+ iomd_writeb(0, IOMD_IRQMASKC);
+ iomd_writeb(0, IOMD_IRQMASKD);
+
+ iomd_writeb(0xff, IOMD_IOLINES);
+
+ iomd_writeb(0, IOMD_FIQMASK);
+ iomd_writeb(0, IOMD_DMAMASK);
+
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ switch (irq) {
+ case 0 ... 6:
+ irq_desc[irq].probe_ok = 1;
+ case 7:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_ack_a;
+ irq_desc[irq].mask = rpc_mask_irq_a;
+ irq_desc[irq].unmask = rpc_unmask_irq_a;
+ break;
+
+ case 9 ... 15:
+ irq_desc[irq].probe_ok = 1;
+ case 8:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_b;
+ irq_desc[irq].mask = rpc_mask_irq_b;
+ irq_desc[irq].unmask = rpc_unmask_irq_b;
+ break;
+
+ case 16 ... 19:
+ case 21:
+ irq_desc[irq].noautoenable = 1;
+ case 20:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_dma;
+ irq_desc[irq].mask = rpc_mask_irq_dma;
+ irq_desc[irq].unmask = rpc_unmask_irq_dma;
+ break;
+
+ case 24 ... 31:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_c;
+ irq_desc[irq].mask = rpc_mask_irq_c;
+ irq_desc[irq].unmask = rpc_unmask_irq_c;
+ break;
+
+ case 40 ... 47:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_d;
+ irq_desc[irq].mask = rpc_mask_irq_d;
+ irq_desc[irq].unmask = rpc_unmask_irq_d;
+ break;
+
+ case 64 ... 71:
+ irq_desc[irq].valid = 1;
+ irq_desc[irq].mask_ack = rpc_mask_irq_fiq;
+ irq_desc[irq].mask = rpc_mask_irq_fiq;
+ irq_desc[irq].unmask = rpc_unmask_irq_fiq;
+ break;
+ }
+ }
+
+ irq_desc[IRQ_KEYBOARDTX].noautoenable = 1;
+
+ init_FIQ();
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)