1 files changed, 89 insertions, 61 deletions

diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index e2739eb93cdf..eabfe06fe05c 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -36,9 +36,20 @@
 #include <asm/mpc8260.h>
 #include <asm/io.h>
 #include <asm/prom.h>
+#include <asm/fs_pd.h>
 
 #include "cpm2_pic.h"
 
+/* External IRQS */
+#define CPM2_IRQ_EXT1           19
+#define CPM2_IRQ_EXT7           25
+
+/* Port C IRQS */
+#define CPM2_IRQ_PORTC15        48
+#define CPM2_IRQ_PORTC0         63
+
+static intctl_cpm2_t *cpm2_intctl;
+
 static struct device_node *cpm2_pic_node;
 static struct irq_host *cpm2_pic_host;
 #define NR_MASK_WORDS   ((NR_IRQS + 31) / 32)
@@ -68,68 +79,55 @@ static const u_char irq_to_siubit[] = {
         24, 25, 26, 27, 28, 29, 30, 31,
 };
 
-static void cpm2_mask_irq(unsigned int irq_nr)
+static void cpm2_mask_irq(unsigned int virq)
 {
         int     bit, word;
-        volatile uint   *simr;
-
-        irq_nr -= CPM_IRQ_OFFSET;
+        unsigned int irq_nr = virq_to_hw(virq);
 
         bit = irq_to_siubit[irq_nr];
         word = irq_to_siureg[irq_nr];
 
-        simr = &(cpm2_intctl->ic_simrh);
         ppc_cached_irq_mask[word] &= ~(1 << bit);
-        simr[word] = ppc_cached_irq_mask[word];
+        out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]);
 }
 
-static void cpm2_unmask_irq(unsigned int irq_nr)
+static void cpm2_unmask_irq(unsigned int virq)
 {
         int     bit, word;
-        volatile uint   *simr;
-
-        irq_nr -= CPM_IRQ_OFFSET;
+        unsigned int irq_nr = virq_to_hw(virq);
 
         bit = irq_to_siubit[irq_nr];
         word = irq_to_siureg[irq_nr];
 
-        simr = &(cpm2_intctl->ic_simrh);
         ppc_cached_irq_mask[word] |= 1 << bit;
-        simr[word] = ppc_cached_irq_mask[word];
+        out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]);
 }
 
-static void cpm2_mask_and_ack(unsigned int irq_nr)
+static void cpm2_ack(unsigned int virq)
 {
         int     bit, word;
-        volatile uint   *simr, *sipnr;
-
-        irq_nr -= CPM_IRQ_OFFSET;
+        unsigned int irq_nr = virq_to_hw(virq);
 
         bit = irq_to_siubit[irq_nr];
         word = irq_to_siureg[irq_nr];
 
-        simr = &(cpm2_intctl->ic_simrh);
-        sipnr = &(cpm2_intctl->ic_sipnrh);
-        ppc_cached_irq_mask[word] &= ~(1 << bit);
-        simr[word] = ppc_cached_irq_mask[word];
-        sipnr[word] = 1 << bit;
+        out_be32(&cpm2_intctl->ic_sipnrh + word, 1 << bit);
 }
 
-static void cpm2_end_irq(unsigned int irq_nr)
+static void cpm2_end_irq(unsigned int virq)
 {
         int     bit, word;
-        volatile uint   *simr;
+        unsigned int irq_nr = virq_to_hw(virq);
 
         if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))
                         && irq_desc[irq_nr].action) {
 
-                irq_nr -= CPM_IRQ_OFFSET;
                 bit = irq_to_siubit[irq_nr];
                 word = irq_to_siureg[irq_nr];
 
-                simr = &(cpm2_intctl->ic_simrh);
                 ppc_cached_irq_mask[word] |= 1 << bit;
-                simr[word] = ppc_cached_irq_mask[word];
+                out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]);
+
                 /*
                  * Work around large numbers of spurious IRQs on PowerPC 82xx
                  * systems.
@@ -138,13 +136,59 @@ static void cpm2_end_irq(unsigned int irq_nr)
         }
 }
 
+static int cpm2_set_irq_type(unsigned int virq, unsigned int flow_type)
+{
+        unsigned int src = virq_to_hw(virq);
+        struct irq_desc *desc = get_irq_desc(virq);
+        unsigned int vold, vnew, edibit;
+
+        if (flow_type == IRQ_TYPE_NONE)
+                flow_type = IRQ_TYPE_LEVEL_LOW;
+
+        if (flow_type & IRQ_TYPE_EDGE_RISING) {
+                printk(KERN_ERR "CPM2 PIC: sense type 0x%x not supported\n",
+                        flow_type);
+                return -EINVAL;
+        }
+
+        desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
+        desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
+        if (flow_type & IRQ_TYPE_LEVEL_LOW)  {
+                desc->status |= IRQ_LEVEL;
+                desc->handle_irq = handle_level_irq;
+        } else
+                desc->handle_irq = handle_edge_irq;
+
+        /* internal IRQ senses are LEVEL_LOW
+         * EXT IRQ and Port C IRQ senses are programmable
+         */
+        if (src >= CPM2_IRQ_EXT1 && src <= CPM2_IRQ_EXT7)
+                        edibit = (14 - (src - CPM2_IRQ_EXT1));
+        else
+                if (src >= CPM2_IRQ_PORTC15 && src <= CPM2_IRQ_PORTC0)
+                        edibit = (31 - (src - CPM2_IRQ_PORTC15));
+                else
+                        return (flow_type & IRQ_TYPE_LEVEL_LOW) ? 0 : -EINVAL;
+
+        vold = in_be32(&cpm2_intctl->ic_siexr);
+
+        if ((flow_type & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_FALLING)
+                vnew = vold | (1 << edibit);
+        else
+                vnew = vold & ~(1 << edibit);
+
+        if (vold != vnew)
+                out_be32(&cpm2_intctl->ic_siexr, vnew);
+        return 0;
+}
+
 static struct irq_chip cpm2_pic = {
         .typename = " CPM2 SIU ",
-        .enable = cpm2_unmask_irq,
-        .disable = cpm2_mask_irq,
+        .mask = cpm2_mask_irq,
         .unmask = cpm2_unmask_irq,
-        .mask_ack = cpm2_mask_and_ack,
-        .end = cpm2_end_irq,
+        .ack = cpm2_ack,
+        .eoi = cpm2_end_irq,
+        .set_type = cpm2_set_irq_type,
 };
 
 unsigned int cpm2_get_irq(void)
@@ -154,17 +198,17 @@ unsigned int cpm2_get_irq(void)
 
        /* For CPM2, read the SIVEC register and shift the bits down
          * to get the irq number.         */
-        bits = cpm2_intctl->ic_sivec;
+        bits = in_be32(&cpm2_intctl->ic_sivec);
         irq = bits >> 26;
 
         if (irq == 0)
                 return(-1);
-        return irq+CPM_IRQ_OFFSET;
+        return irq_linear_revmap(cpm2_pic_host, irq);
 }
 
 static int cpm2_pic_host_match(struct irq_host *h, struct device_node *node)
 {
-        return cpm2_pic_node == NULL || cpm2_pic_node == node;
+        return cpm2_pic_node == node;
 }
 
 static int cpm2_pic_host_map(struct irq_host *h, unsigned int virq,
@@ -177,39 +221,21 @@ static int cpm2_pic_host_map(struct irq_host *h, unsigned int virq,
         return 0;
 }
 
-static void cpm2_host_unmap(struct irq_host *h, unsigned int virq)
-{
-        /* Make sure irq is masked in hardware */
-        cpm2_mask_irq(virq);
-
-        /* remove chip and handler */
-        set_irq_chip_and_handler(virq, NULL, NULL);
-}
-
 static int cpm2_pic_host_xlate(struct irq_host *h, struct device_node *ct,
                             u32 *intspec, unsigned int intsize,
                             irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 {
-        static const unsigned char map_cpm2_senses[4] = {
-                IRQ_TYPE_LEVEL_LOW,
-                IRQ_TYPE_LEVEL_HIGH,
-                IRQ_TYPE_EDGE_FALLING,
-                IRQ_TYPE_EDGE_RISING,
-        };
-
         *out_hwirq = intspec[0];
-        if (intsize > 1 && intspec[1] < 4)
-                *out_flags = map_cpm2_senses[intspec[1]];
+        if (intsize > 1)
+                *out_flags = intspec[1];
         else
                 *out_flags = IRQ_TYPE_NONE;
-
         return 0;
 }
 
 static struct irq_host_ops cpm2_pic_host_ops = {
         .match = cpm2_pic_host_match,
         .map = cpm2_pic_host_map,
-        .unmap = cpm2_host_unmap,
         .xlate = cpm2_pic_host_xlate,
 };
 
@@ -217,32 +243,34 @@ void cpm2_pic_init(struct device_node *node)
 {
         int i;
 
+        cpm2_intctl = cpm2_map(im_intctl);
+
         /* Clear the CPM IRQ controller, in case it has any bits set
          * from the bootloader
          */
 
         /* Mask out everything */
 
-        cpm2_intctl->ic_simrh = 0x00000000;
-        cpm2_intctl->ic_simrl = 0x00000000;
+        out_be32(&cpm2_intctl->ic_simrh, 0x00000000);
+        out_be32(&cpm2_intctl->ic_simrl, 0x00000000);
 
         wmb();
 
         /* Ack everything */
-        cpm2_intctl->ic_sipnrh = 0xffffffff;
-        cpm2_intctl->ic_sipnrl = 0xffffffff;
+        out_be32(&cpm2_intctl->ic_sipnrh, 0xffffffff);
+        out_be32(&cpm2_intctl->ic_sipnrl, 0xffffffff);
         wmb();
 
         /* Dummy read of the vector */
-        i = cpm2_intctl->ic_sivec;
+        i = in_be32(&cpm2_intctl->ic_sivec);
         rmb();
 
         /* Initialize the default interrupt mapping priorities,
          * in case the boot rom changed something on us.
          */
-        cpm2_intctl->ic_sicr = 0;
-        cpm2_intctl->ic_scprrh = 0x05309770;
-        cpm2_intctl->ic_scprrl = 0x05309770;
+        out_be16(&cpm2_intctl->ic_sicr, 0);
+        out_be32(&cpm2_intctl->ic_scprrh, 0x05309770);
+        out_be32(&cpm2_intctl->ic_scprrl, 0x05309770);
 
         /* create a legacy host */
         cpm2_pic_node = of_node_get(node);