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Diffstat (limited to 'cpu/ppc4xx/interrupts.c')
-rw-r--r--cpu/ppc4xx/interrupts.c221
1 files changed, 201 insertions, 20 deletions
diff --git a/cpu/ppc4xx/interrupts.c b/cpu/ppc4xx/interrupts.c
index 974797f..71052b4 100644
--- a/cpu/ppc4xx/interrupts.c
+++ b/cpu/ppc4xx/interrupts.c
@@ -5,6 +5,9 @@
* (C) Copyright 2002 (440 port)
* Scott McNutt, Artesyn Communication Producs, smcnutt@artsyncp.com
*
+ * (C) Copyright 2003 (440GX port)
+ * Travis B. Sawyer, Sandburst Corporation, tsawyer@sandburst.com
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -50,7 +53,15 @@ static struct irq_action irq_vecs[32];
static struct irq_action irq_vecs1[32]; /* For UIC1 */
void uic1_interrupt( void * parms); /* UIC1 handler */
-#endif
+
+#if defined(CONFIG_440_GX)
+static struct irq_action irq_vecs2[32]; /* For UIC2 */
+
+void uic0_interrupt( void * parms); /* UIC0 handler */
+void uic2_interrupt( void * parms); /* UIC2 handler */
+#endif /* CONFIG_440_GX */
+
+#endif /* CONFIG_440 */
/****************************************************************************/
#if defined(CONFIG_440)
@@ -104,6 +115,11 @@ int interrupt_init_cpu (unsigned *decrementer_count)
irq_vecs1[vec].handler = NULL;
irq_vecs1[vec].arg = NULL;
irq_vecs1[vec].count = 0;
+#if defined(CONFIG_440_GX)
+ irq_vecs2[vec].handler = NULL;
+ irq_vecs2[vec].arg = NULL;
+ irq_vecs2[vec].count = 0;
+#endif /* CONFIG_440_GX */
#endif
}
@@ -146,10 +162,18 @@ int interrupt_init_cpu (unsigned *decrementer_count)
set_evpr(0x00000000);
#if defined(CONFIG_440)
+#if !defined(CONFIG_440_GX)
/* Install the UIC1 handlers */
irq_install_handler(VECNUM_UIC1NC, uic1_interrupt, 0);
irq_install_handler(VECNUM_UIC1C, uic1_interrupt, 0);
#endif
+#endif
+
+#if defined(CONFIG_440_GX)
+ /* Enable UIC interrupts via UIC Base Enable Register */
+ mtdcr(uicb0er, UICB0_ALL);
+ mtdcr(uicb0cr, UICB0_ALL);
+#endif
return (0);
}
@@ -159,6 +183,29 @@ int interrupt_init_cpu (unsigned *decrementer_count)
/*
* Handle external interrupts
*/
+#if defined(CONFIG_440_GX)
+void external_interrupt(struct pt_regs *regs)
+{
+ ulong uic_msr;
+
+ /*
+ * Read masked interrupt status register to determine interrupt source
+ */
+ /* 440 GX uses base uic register */
+ uic_msr = mfdcr(uicb0msr);
+
+ uic0_interrupt(0);
+ uic1_interrupt(0);
+ uic2_interrupt(0);
+
+ mtdcr(uicb0sr, UICB0_ALL);
+
+ return;
+
+} /* external_interrupt CONFIG_440_GX */
+
+#else
+
void external_interrupt(struct pt_regs *regs)
{
ulong uic_msr;
@@ -200,6 +247,53 @@ void external_interrupt(struct pt_regs *regs)
vec++;
}
}
+#endif
+
+#if defined(CONFIG_440_GX)
+/* Handler for UIC0 interrupt */
+void uic0_interrupt( void * parms)
+{
+ ulong uic_msr;
+ ulong msr_shift;
+ int vec;
+
+ /*
+ * Read masked interrupt status register to determine interrupt source
+ */
+ uic_msr = mfdcr(uicmsr);
+ msr_shift = uic_msr;
+ vec = 0;
+
+ while (msr_shift != 0) {
+ if (msr_shift & 0x80000000) {
+ /*
+ * Increment irq counter (for debug purpose only)
+ */
+ irq_vecs[vec].count++;
+
+ if (irq_vecs[vec].handler != NULL) {
+ /* call isr */
+ (*irq_vecs[vec].handler)(irq_vecs[vec].arg);
+ } else {
+ mtdcr(uicer, mfdcr(uicer) & ~(0x80000000 >> vec));
+ printf ("Masking bogus interrupt vector (uic0) 0x%x\n", vec);
+ }
+
+ /*
+ * After servicing the interrupt, we have to remove the status indicator.
+ */
+ mtdcr(uicsr, (0x80000000 >> vec));
+ }
+
+ /*
+ * Shift msr to next position and increment vector
+ */
+ msr_shift <<= 1;
+ vec++;
+ }
+}
+
+#endif /* CONFIG_440_GX */
#if defined(CONFIG_440)
/* Handler for UIC1 interrupt */
@@ -246,50 +340,119 @@ void uic1_interrupt( void * parms)
}
#endif /* defined(CONFIG_440) */
+#if defined(CONFIG_440_GX)
+/* Handler for UIC1 interrupt */
+void uic2_interrupt( void * parms)
+{
+ ulong uic2_msr;
+ ulong msr_shift;
+ int vec;
+
+ /*
+ * Read masked interrupt status register to determine interrupt source
+ */
+ uic2_msr = mfdcr(uic2msr);
+ msr_shift = uic2_msr;
+ vec = 0;
+
+ while (msr_shift != 0) {
+ if (msr_shift & 0x80000000) {
+ /*
+ * Increment irq counter (for debug purpose only)
+ */
+ irq_vecs2[vec].count++;
+
+ if (irq_vecs2[vec].handler != NULL) {
+ /* call isr */
+ (*irq_vecs2[vec].handler)(irq_vecs2[vec].arg);
+ } else {
+ mtdcr(uic2er, mfdcr(uic2er) & ~(0x80000000 >> vec));
+ printf ("Masking bogus interrupt vector (uic1) 0x%x\n", vec);
+ }
+
+ /*
+ * After servicing the interrupt, we have to remove the status indicator.
+ */
+ mtdcr(uic2sr, (0x80000000 >> vec));
+ }
+
+ /*
+ * Shift msr to next position and increment vector
+ */
+ msr_shift <<= 1;
+ vec++;
+ }
+}
+#endif /* defined(CONFIG_440_GX) */
+
/****************************************************************************/
/*
* Install and free a interrupt handler.
*/
-void
-irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
+void irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
{
struct irq_action *irqa = irq_vecs;
- int i = vec;
+ int i = vec;
#if defined(CONFIG_440)
+#if defined(CONFIG_440_GX)
+ if ((vec > 31) && (vec < 64)) {
+ i = vec - 32;
+ irqa = irq_vecs1;
+ } else if (vec > 63) {
+ i = vec - 64;
+ irqa = irq_vecs2;
+ }
+#else /* CONFIG_440_GX */
if (vec > 31) {
i = vec - 32;
irqa = irq_vecs1;
}
-#endif
+#endif /* CONFIG_440_GX */
+#endif /* CONFIG_440 */
if (irqa[i].handler != NULL) {
printf ("Interrupt vector %d: handler 0x%x replacing 0x%x\n",
- vec, (uint)handler, (uint)irqa[i].handler);
+ vec, (uint) handler, (uint) irqa[i].handler);
}
irqa[i].handler = handler;
- irqa[i].arg = arg;
+ irqa[i].arg = arg;
#if defined(CONFIG_440)
- if( vec > 31 )
- mtdcr(uic1er, mfdcr(uic1er) | (0x80000000 >> i));
+#if defined(CONFIG_440_GX)
+ if ((vec > 31) && (vec < 64))
+ mtdcr (uic1er, mfdcr (uic1er) | (0x80000000 >> i));
+ else if (vec > 63)
+ mtdcr (uic2er, mfdcr (uic2er) | (0x80000000 >> i));
+ else
+#endif /* CONFIG_440_GX */
+ if (vec > 31)
+ mtdcr (uic1er, mfdcr (uic1er) | (0x80000000 >> i));
else
#endif
- mtdcr(uicer, mfdcr(uicer) | (0x80000000 >> i));
+ mtdcr (uicer, mfdcr (uicer) | (0x80000000 >> i));
#if 0
printf ("Install interrupt for vector %d ==> %p\n", vec, handler);
#endif
}
-void
-irq_free_handler(int vec)
+void irq_free_handler (int vec)
{
struct irq_action *irqa = irq_vecs;
- int i = vec;
+ int i = vec;
#if defined(CONFIG_440)
+#if defined(CONFIG_440_GX)
+ if ((vec > 31) && (vec < 64)) {
+ irqa = irq_vecs1;
+ i = vec - 32;
+ } else if (vec > 63) {
+ irqa = irq_vecs2;
+ i = vec - 64;
+ }
+#endif /* CONFIG_440_GX */
if (vec > 31) {
irqa = irq_vecs1;
i = vec - 32;
@@ -302,14 +465,21 @@ irq_free_handler(int vec)
#endif
#if defined(CONFIG_440)
+#if defined(CONFIG_440_GX)
+ if ((vec > 31) && (vec < 64))
+ mtdcr (uic1er, mfdcr (uic1er) & ~(0x80000000 >> i));
+ else if (vec > 63)
+ mtdcr (uic2er, mfdcr (uic2er) & ~(0x80000000 >> i));
+ else
+#endif /* CONFIG_440_GX */
if (vec > 31)
- mtdcr(uic1er, mfdcr(uic1er) & ~(0x80000000 >> i));
+ mtdcr (uic1er, mfdcr (uic1er) & ~(0x80000000 >> i));
else
#endif
- mtdcr(uicer, mfdcr(uicer) & ~(0x80000000 >> i));
+ mtdcr (uicer, mfdcr (uicer) & ~(0x80000000 >> i));
irqa[i].handler = NULL;
- irqa[i].arg = NULL;
+ irqa[i].arg = NULL;
}
/****************************************************************************/
@@ -354,8 +524,7 @@ do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
printf ("\nUIC 1\n");
printf ("Nr Routine Arg Count\n");
- for (vec=0; vec<32; vec++)
- {
+ for (vec=0; vec<32; vec++) {
if (irq_vecs1[vec].handler != NULL)
printf ("%02d %08lx %08lx %d\n",
vec+31, (ulong)irq_vecs1[vec].handler,
@@ -363,8 +532,20 @@ do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
}
printf("\n");
#endif
- return 0;
-}
+#if defined(CONFIG_440_GX)
+ printf ("\nUIC 2\n");
+ printf ("Nr Routine Arg Count\n");
+ for (vec=0; vec<32; vec++) {
+ if (irq_vecs2[vec].handler != NULL)
+ printf ("%02d %08lx %08lx %d\n",
+ vec+63, (ulong)irq_vecs2[vec].handler,
+ (ulong)irq_vecs2[vec].arg, irq_vecs2[vec].count);
+ }
+ printf("\n");
+#endif
+
+ return 0;
+}
#endif /* CONFIG_COMMANDS & CFG_CMD_IRQ */
generated by cgit v1.1 at 2024-11-24 08:47:19 +0000