aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/syslib/xilinx_pic.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/syslib/xilinx_pic.c')
-rw-r--r--arch/ppc/syslib/xilinx_pic.c153
1 files changed, 0 insertions, 153 deletions
diff --git a/arch/ppc/syslib/xilinx_pic.c b/arch/ppc/syslib/xilinx_pic.c
deleted file mode 100644
index 3b82333e96d..00000000000
--- a/arch/ppc/syslib/xilinx_pic.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Interrupt controller driver for Xilinx Virtex-II Pro.
- *
- * Author: MontaVista Software, Inc.
- * source@mvista.com
- *
- * 2002-2004 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <asm/io.h>
-#include <platforms/4xx/xparameters/xparameters.h>
-#include <asm/ibm4xx.h>
-#include <asm/machdep.h>
-
-/* No one else should require these constants, so define them locally here. */
-#define ISR 0 /* Interrupt Status Register */
-#define IPR 1 /* Interrupt Pending Register */
-#define IER 2 /* Interrupt Enable Register */
-#define IAR 3 /* Interrupt Acknowledge Register */
-#define SIE 4 /* Set Interrupt Enable bits */
-#define CIE 5 /* Clear Interrupt Enable bits */
-#define IVR 6 /* Interrupt Vector Register */
-#define MER 7 /* Master Enable Register */
-
-#if XPAR_XINTC_USE_DCR == 0
-static volatile u32 *intc;
-#define intc_out_be32(addr, mask) out_be32((addr), (mask))
-#define intc_in_be32(addr) in_be32((addr))
-#else
-#define intc XPAR_INTC_0_BASEADDR
-#define intc_out_be32(addr, mask) mtdcr((addr), (mask))
-#define intc_in_be32(addr) mfdcr((addr))
-#endif
-
-static void
-xilinx_intc_enable(unsigned int irq)
-{
- unsigned long mask = (0x00000001 << (irq & 31));
- pr_debug("enable: %d\n", irq);
- intc_out_be32(intc + SIE, mask);
-}
-
-static void
-xilinx_intc_disable(unsigned int irq)
-{
- unsigned long mask = (0x00000001 << (irq & 31));
- pr_debug("disable: %d\n", irq);
- intc_out_be32(intc + CIE, mask);
-}
-
-static void
-xilinx_intc_disable_and_ack(unsigned int irq)
-{
- unsigned long mask = (0x00000001 << (irq & 31));
- pr_debug("disable_and_ack: %d\n", irq);
- intc_out_be32(intc + CIE, mask);
- if (!(irq_desc[irq].status & IRQ_LEVEL))
- intc_out_be32(intc + IAR, mask); /* ack edge triggered intr */
-}
-
-static void
-xilinx_intc_end(unsigned int irq)
-{
- unsigned long mask = (0x00000001 << (irq & 31));
-
- pr_debug("end: %d\n", irq);
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
- intc_out_be32(intc + SIE, mask);
- /* ack level sensitive intr */
- if (irq_desc[irq].status & IRQ_LEVEL)
- intc_out_be32(intc + IAR, mask);
- }
-}
-
-static struct hw_interrupt_type xilinx_intc = {
- .typename = "Xilinx Interrupt Controller",
- .enable = xilinx_intc_enable,
- .disable = xilinx_intc_disable,
- .ack = xilinx_intc_disable_and_ack,
- .end = xilinx_intc_end,
-};
-
-int
-xilinx_pic_get_irq(void)
-{
- int irq;
-
- /*
- * NOTE: This function is the one that needs to be improved in
- * order to handle multiple interrupt controllers. It currently
- * is hardcoded to check for interrupts only on the first INTC.
- */
-
- irq = intc_in_be32(intc + IVR);
- if (irq != -1)
- irq = irq;
-
- pr_debug("get_irq: %d\n", irq);
-
- return (irq);
-}
-
-void __init
-ppc4xx_pic_init(void)
-{
- int i;
-
- /*
- * NOTE: The assumption here is that NR_IRQS is 32 or less
- * (NR_IRQS is 32 for PowerPC 405 cores by default).
- */
-#if (NR_IRQS > 32)
-#error NR_IRQS > 32 not supported
-#endif
-
-#if XPAR_XINTC_USE_DCR == 0
- intc = ioremap(XPAR_INTC_0_BASEADDR, 32);
-
- printk(KERN_INFO "Xilinx INTC #0 at 0x%08lX mapped to 0x%08lX\n",
- (unsigned long) XPAR_INTC_0_BASEADDR, (unsigned long) intc);
-#else
- printk(KERN_INFO "Xilinx INTC #0 at 0x%08lX (DCR)\n",
- (unsigned long) XPAR_INTC_0_BASEADDR);
-#endif
-
- /*
- * Disable all external interrupts until they are
- * explicitly requested.
- */
- intc_out_be32(intc + IER, 0);
-
- /* Acknowledge any pending interrupts just in case. */
- intc_out_be32(intc + IAR, ~(u32) 0);
-
- /* Turn on the Master Enable. */
- intc_out_be32(intc + MER, 0x3UL);
-
- ppc_md.get_irq = xilinx_pic_get_irq;
-
- for (i = 0; i < NR_IRQS; ++i) {
- irq_desc[i].chip = &xilinx_intc;
-
- if (XPAR_INTC_0_KIND_OF_INTR & (0x00000001 << i))
- irq_desc[i].status &= ~IRQ_LEVEL;
- else
- irq_desc[i].status |= IRQ_LEVEL;
- }
-}