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authorShinya Kuribayashi <skuribay@ruby.dti.ne.jp>2008-10-24 01:32:40 +0900
committerRalf Baechle <ralf@linux-mips.org>2008-10-27 16:18:30 +0000
commit9ae9fd79af28d6488e97311a3b60379b59ff4c90 (patch)
tree3146a83f9d1245d0ab0448326cd97dd5db25589c /arch/mips/emma/markeins/irq.c
parentfcb3cfe7f087fb27c35be911791883fb725055b1 (diff)
MIPS: EMMA: Fold arch/mips/emma/{common,markeins}/irq*.c into markeins/irq.c
Current EMMA2RH irq code is mess. Before cleaning it up, gather them in one place as a first step. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/emma/markeins/irq.c')
-rw-r--r--arch/mips/emma/markeins/irq.c251
1 files changed, 247 insertions, 4 deletions
diff --git a/arch/mips/emma/markeins/irq.c b/arch/mips/emma/markeins/irq.c
index 3577fd52030..ada33d8f6ed 100644
--- a/arch/mips/emma/markeins/irq.c
+++ b/arch/mips/emma/markeins/irq.c
@@ -38,6 +38,9 @@
#include <asm/emma/emma2rh.h>
+/* number of total irqs supported by EMMA2RH */
+#define NUM_EMMA2RH_IRQ 96
+
/*
* IRQ mapping
*
@@ -53,10 +56,180 @@
*
*/
-extern void emma2rh_sw_irq_init(void);
-extern void emma2rh_gpio_irq_init(void);
-extern void emma2rh_irq_init(void);
-extern void emma2rh_irq_dispatch(void);
+void ll_emma2rh_irq_enable(int emma2rh_irq)
+{
+ u32 reg_value;
+ u32 reg_bitmask;
+ u32 reg_index;
+
+ reg_index = EMMA2RH_BHIF_INT_EN_0 +
+ (EMMA2RH_BHIF_INT_EN_1 - EMMA2RH_BHIF_INT_EN_0) *
+ (emma2rh_irq / 32);
+ reg_value = emma2rh_in32(reg_index);
+ reg_bitmask = 0x1 << (emma2rh_irq % 32);
+ db_assert((reg_value & reg_bitmask) == 0);
+ emma2rh_out32(reg_index, reg_value | reg_bitmask);
+}
+
+void ll_emma2rh_irq_disable(int emma2rh_irq)
+{
+ u32 reg_value;
+ u32 reg_bitmask;
+ u32 reg_index;
+
+ reg_index = EMMA2RH_BHIF_INT_EN_0 +
+ (EMMA2RH_BHIF_INT_EN_1 - EMMA2RH_BHIF_INT_EN_0) *
+ (emma2rh_irq / 32);
+ reg_value = emma2rh_in32(reg_index);
+ reg_bitmask = 0x1 << (emma2rh_irq % 32);
+ db_assert((reg_value & reg_bitmask) != 0);
+ emma2rh_out32(reg_index, reg_value & ~reg_bitmask);
+}
+
+static void emma2rh_irq_enable(unsigned int irq)
+{
+ ll_emma2rh_irq_enable(irq - EMMA2RH_IRQ_BASE);
+}
+
+static void emma2rh_irq_disable(unsigned int irq)
+{
+ ll_emma2rh_irq_disable(irq - EMMA2RH_IRQ_BASE);
+}
+
+struct irq_chip emma2rh_irq_controller = {
+ .name = "emma2rh_irq",
+ .ack = emma2rh_irq_disable,
+ .mask = emma2rh_irq_disable,
+ .mask_ack = emma2rh_irq_disable,
+ .unmask = emma2rh_irq_enable,
+};
+
+void emma2rh_irq_init(void)
+{
+ u32 i;
+
+ for (i = 0; i < NUM_EMMA2RH_IRQ; i++)
+ set_irq_chip_and_handler(EMMA2RH_IRQ_BASE + i,
+ &emma2rh_irq_controller,
+ handle_level_irq);
+}
+
+void ll_emma2rh_sw_irq_enable(int irq)
+{
+ u32 reg;
+
+ db_assert(irq >= 0);
+ db_assert(irq < NUM_EMMA2RH_IRQ_SW);
+
+ reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
+ reg |= 1 << irq;
+ emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg);
+}
+
+void ll_emma2rh_sw_irq_disable(int irq)
+{
+ u32 reg;
+
+ db_assert(irq >= 0);
+ db_assert(irq < 32);
+
+ reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
+ reg &= ~(1 << irq);
+ emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg);
+}
+
+static void emma2rh_sw_irq_enable(unsigned int irq)
+{
+ ll_emma2rh_sw_irq_enable(irq - EMMA2RH_SW_IRQ_BASE);
+}
+
+static void emma2rh_sw_irq_disable(unsigned int irq)
+{
+ ll_emma2rh_sw_irq_disable(irq - EMMA2RH_SW_IRQ_BASE);
+}
+
+struct irq_chip emma2rh_sw_irq_controller = {
+ .name = "emma2rh_sw_irq",
+ .ack = emma2rh_sw_irq_disable,
+ .mask = emma2rh_sw_irq_disable,
+ .mask_ack = emma2rh_sw_irq_disable,
+ .unmask = emma2rh_sw_irq_enable,
+};
+
+void emma2rh_sw_irq_init(void)
+{
+ u32 i;
+
+ for (i = 0; i < NUM_EMMA2RH_IRQ_SW; i++)
+ set_irq_chip_and_handler(EMMA2RH_SW_IRQ_BASE + i,
+ &emma2rh_sw_irq_controller,
+ handle_level_irq);
+}
+
+void ll_emma2rh_gpio_irq_enable(int irq)
+{
+ u32 reg;
+
+ db_assert(irq >= 0);
+ db_assert(irq < NUM_EMMA2RH_IRQ_GPIO);
+
+ reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
+ reg |= 1 << irq;
+ emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg);
+}
+
+void ll_emma2rh_gpio_irq_disable(int irq)
+{
+ u32 reg;
+
+ db_assert(irq >= 0);
+ db_assert(irq < NUM_EMMA2RH_IRQ_GPIO);
+
+ reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
+ reg &= ~(1 << irq);
+ emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg);
+}
+
+static void emma2rh_gpio_irq_enable(unsigned int irq)
+{
+ ll_emma2rh_gpio_irq_enable(irq - EMMA2RH_GPIO_IRQ_BASE);
+}
+
+static void emma2rh_gpio_irq_disable(unsigned int irq)
+{
+ ll_emma2rh_gpio_irq_disable(irq - EMMA2RH_GPIO_IRQ_BASE);
+}
+
+static void emma2rh_gpio_irq_ack(unsigned int irq)
+{
+ irq -= EMMA2RH_GPIO_IRQ_BASE;
+ emma2rh_out32(EMMA2RH_GPIO_INT_ST, ~(1 << irq));
+ ll_emma2rh_gpio_irq_disable(irq);
+}
+
+static void emma2rh_gpio_irq_end(unsigned int irq)
+{
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+ ll_emma2rh_gpio_irq_enable(irq - EMMA2RH_GPIO_IRQ_BASE);
+}
+
+struct irq_chip emma2rh_gpio_irq_controller = {
+ .name = "emma2rh_gpio_irq",
+ .ack = emma2rh_gpio_irq_ack,
+ .mask = emma2rh_gpio_irq_disable,
+ .mask_ack = emma2rh_gpio_irq_ack,
+ .unmask = emma2rh_gpio_irq_enable,
+ .end = emma2rh_gpio_irq_end,
+};
+
+void emma2rh_gpio_irq_init(void)
+{
+ u32 i;
+
+ for (i = 0; i < NUM_EMMA2RH_IRQ_GPIO; i++)
+ set_irq_chip(EMMA2RH_GPIO_IRQ_BASE + i,
+ &emma2rh_gpio_irq_controller);
+}
static struct irqaction irq_cascade = {
.handler = no_action,
@@ -67,6 +240,76 @@ static struct irqaction irq_cascade = {
.next = NULL,
};
+/*
+ * the first level int-handler will jump here if it is a emma2rh irq
+ */
+void emma2rh_irq_dispatch(void)
+{
+ u32 intStatus;
+ u32 bitmask;
+ u32 i;
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_0) &
+ emma2rh_in32(EMMA2RH_BHIF_INT_EN_0);
+
+#ifdef EMMA2RH_SW_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_SW_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 swIntStatus;
+ swIntStatus = emma2rh_in32(EMMA2RH_BHIF_SW_INT)
+ & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (swIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_SW_IRQ_BASE + i);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_1) &
+ emma2rh_in32(EMMA2RH_BHIF_INT_EN_1);
+
+#ifdef EMMA2RH_GPIO_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_GPIO_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 gpioIntStatus;
+ gpioIntStatus = emma2rh_in32(EMMA2RH_GPIO_INT_ST)
+ & emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (gpioIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_2) &
+ emma2rh_in32(EMMA2RH_BHIF_INT_EN_2);
+
+ for (i = 64, bitmask = 1; i < 96; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i);
+ return;
+ }
+ }
+}
+
void __init arch_init_irq(void)
{
u32 reg;