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Diffstat (limited to 'arch/ppc/syslib/ppc8xx_pic.c')
-rw-r--r--arch/ppc/syslib/ppc8xx_pic.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/arch/ppc/syslib/ppc8xx_pic.c b/arch/ppc/syslib/ppc8xx_pic.c
deleted file mode 100644
index bce9a75c80e..00000000000
--- a/arch/ppc/syslib/ppc8xx_pic.c
+++ /dev/null
@@ -1,126 +0,0 @@
-#include <linux/module.h>
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/interrupt.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/8xx_immap.h>
-#include <asm/mpc8xx.h>
-#include "ppc8xx_pic.h"
-
-extern int cpm_get_irq(void);
-
-/* The 8xx internal interrupt controller. It is usually
- * the only interrupt controller. Some boards, like the MBX and
- * Sandpoint have the 8259 as a secondary controller. Depending
- * upon the processor type, the internal controller can have as
- * few as 16 interrupts or as many as 64. We could use the
- * "clear_bit()" and "set_bit()" functions like other platforms,
- * but they are overkill for us.
- */
-
-static void m8xx_mask_irq(unsigned int irq_nr)
-{
- int bit, word;
-
- bit = irq_nr & 0x1f;
- word = irq_nr >> 5;
-
- ppc_cached_irq_mask[word] &= ~(1 << (31-bit));
- out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_simask, ppc_cached_irq_mask[word]);
-}
-
-static void m8xx_unmask_irq(unsigned int irq_nr)
-{
- int bit, word;
-
- bit = irq_nr & 0x1f;
- word = irq_nr >> 5;
-
- ppc_cached_irq_mask[word] |= (1 << (31-bit));
- out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_simask, ppc_cached_irq_mask[word]);
-}
-
-static void m8xx_end_irq(unsigned int irq_nr)
-{
- if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))
- && irq_desc[irq_nr].action) {
- int bit, word;
-
- bit = irq_nr & 0x1f;
- word = irq_nr >> 5;
-
- ppc_cached_irq_mask[word] |= (1 << (31-bit));
- out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_simask, ppc_cached_irq_mask[word]);
- }
-}
-
-
-static void m8xx_mask_and_ack(unsigned int irq_nr)
-{
- int bit, word;
-
- bit = irq_nr & 0x1f;
- word = irq_nr >> 5;
-
- ppc_cached_irq_mask[word] &= ~(1 << (31-bit));
- out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_simask, ppc_cached_irq_mask[word]);
- out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sipend, 1 << (31-bit));
-}
-
-struct hw_interrupt_type ppc8xx_pic = {
- .typename = " 8xx SIU ",
- .enable = m8xx_unmask_irq,
- .disable = m8xx_mask_irq,
- .ack = m8xx_mask_and_ack,
- .end = m8xx_end_irq,
-};
-
-/*
- * We either return a valid interrupt or -1 if there is nothing pending
- */
-int
-m8xx_get_irq(struct pt_regs *regs)
-{
- int irq;
-
- /* For MPC8xx, read the SIVEC register and shift the bits down
- * to get the irq number.
- */
- irq = in_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sivec) >> 26;
-
- /*
- * When we read the sivec without an interrupt to process, we will
- * get back SIU_LEVEL7. In this case, return -1
- */
- if (irq == CPM_INTERRUPT)
- irq = CPM_IRQ_OFFSET + cpm_get_irq();
-#if defined(CONFIG_PCI)
- else if (irq == ISA_BRIDGE_INT) {
- int isa_irq;
-
- if ((isa_irq = i8259_poll(regs)) >= 0)
- irq = I8259_IRQ_OFFSET + isa_irq;
- }
-#endif /* CONFIG_PCI */
- else if (irq == SIU_LEVEL7)
- irq = -1;
-
- return irq;
-}
-
-#if defined(CONFIG_MBX) && defined(CONFIG_PCI)
-/* Only the MBX uses the external 8259. This allows us to catch standard
- * drivers that may mess up the internal interrupt controllers, and also
- * allow them to run without modification on the MBX.
- */
-void mbx_i8259_action(int irq, void *dev_id, struct pt_regs *regs)
-{
- /* This interrupt handler never actually gets called. It is
- * installed only to unmask the 8259 cascade interrupt in the SIU
- * and to make the 8259 cascade interrupt visible in /proc/interrupts.
- */
-}
-#endif /* CONFIG_PCI */