* Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
* - Coped with INTASSIGN of NEC VR4133.
*/
+#include <linux/config.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/module.h>
#include <linux/smp.h>
#include <linux/types.h>
extern asmlinkage void vr41xx_handle_interrupt(void);
-extern void vr41xx_giuint_init(void);
-extern void vr41xx_enable_giuint(int pin);
-extern void vr41xx_disable_giuint(int pin);
-extern void vr41xx_clear_giuint(int pin);
-extern unsigned int giuint_do_IRQ(int pin, struct pt_regs *regs);
+extern void init_vr41xx_giuint_irq(void);
+extern void giuint_irq_dispatch(struct pt_regs *regs);
static uint32_t icu1_base;
static uint32_t icu2_base;
#define SYSINT2REG_TYPE2 KSEG1ADDR(0x0f0000a0)
#define SYSINT1REG 0x00
+#define PIUINTREG 0x02
#define INTASSIGN0 0x04
#define INTASSIGN1 0x06
#define GIUINTLREG 0x08
+#define DSIUINTREG 0x0a
#define MSYSINT1REG 0x0c
+#define MPIUINTREG 0x0e
+#define MAIUINTREG 0x10
+#define MKIUINTREG 0x12
#define MGIUINTLREG 0x14
+#define MDSIUINTREG 0x16
#define NMIREG 0x18
#define SOFTREG 0x1a
#define INTASSIGN2 0x1c
#define SYSINT2REG 0x00
#define GIUINTHREG 0x02
+#define FIRINTREG 0x04
#define MSYSINT2REG 0x06
#define MGIUINTHREG 0x08
-
-#define MDSIUINTREG KSEG1ADDR(0x0f000096)
- #define INTDSIU 0x0800
+#define MFIRINTREG 0x0a
+#define PCIINTREG 0x0c
+ #define PCIINT0 0x0001
+#define SCUINTREG 0x0e
+ #define SCUINT0 0x0001
+#define CSIINTREG 0x10
+#define MPCIINTREG 0x12
+#define MSCUINTREG 0x14
+#define MCSIINTREG 0x16
+#define BCUINTREG 0x18
+ #define BCUINTR 0x0001
+#define MBCUINTREG 0x1a
#define SYSINT1_IRQ_TO_PIN(x) ((x) - SYSINT1_IRQ_BASE) /* Pin 0-15 */
#define SYSINT2_IRQ_TO_PIN(x) ((x) - SYSINT2_IRQ_BASE) /* Pin 0-15 */
/*=======================================================================*/
-void vr41xx_enable_dsiuint(void)
+void vr41xx_enable_piuint(uint16_t mask)
{
- writew(INTDSIU, MDSIUINTREG);
+ irq_desc_t *desc = irq_desc + PIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MPIUINTREG);
+ val |= mask;
+ write_icu1(val, MPIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-void vr41xx_disable_dsiuint(void)
+void vr41xx_disable_piuint(uint16_t mask)
{
- writew(0, MDSIUINTREG);
+ irq_desc_t *desc = irq_desc + PIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MPIUINTREG);
+ val &= ~mask;
+ write_icu1(val, MPIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-/*=======================================================================*/
-
-static void enable_sysint1_irq(unsigned int irq)
+void vr41xx_enable_aiuint(uint16_t mask)
{
- set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + AIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MAIUINTREG);
+ val |= mask;
+ write_icu1(val, MAIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static void disable_sysint1_irq(unsigned int irq)
+void vr41xx_disable_aiuint(uint16_t mask)
{
- clear_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + AIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MAIUINTREG);
+ val &= ~mask;
+ write_icu1(val, MAIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static unsigned int startup_sysint1_irq(unsigned int irq)
+void vr41xx_enable_kiuint(uint16_t mask)
{
- set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
-
- return 0; /* never anything pending */
+ irq_desc_t *desc = irq_desc + KIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MKIUINTREG);
+ val |= mask;
+ write_icu1(val, MKIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-#define shutdown_sysint1_irq disable_sysint1_irq
-#define ack_sysint1_irq disable_sysint1_irq
-
-static void end_sysint1_irq(unsigned int irq)
+void vr41xx_disable_kiuint(uint16_t mask)
{
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
- set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + KIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MKIUINTREG);
+ val &= ~mask;
+ write_icu1(val, MKIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static struct hw_interrupt_type sysint1_irq_type = {
- .typename = "SYSINT1",
- .startup = startup_sysint1_irq,
- .shutdown = shutdown_sysint1_irq,
- .enable = enable_sysint1_irq,
- .disable = disable_sysint1_irq,
- .ack = ack_sysint1_irq,
- .end = end_sysint1_irq,
-};
+void vr41xx_enable_dsiuint(uint16_t mask)
+{
+ irq_desc_t *desc = irq_desc + DSIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MDSIUINTREG);
+ val |= mask;
+ write_icu1(val, MDSIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
-/*=======================================================================*/
+void vr41xx_disable_dsiuint(uint16_t mask)
+{
+ irq_desc_t *desc = irq_desc + DSIU_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu1(MDSIUINTREG);
+ val &= ~mask;
+ write_icu1(val, MDSIUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
-static void enable_sysint2_irq(unsigned int irq)
+void vr41xx_enable_firint(uint16_t mask)
{
- set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + FIR_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu2(MFIRINTREG);
+ val |= mask;
+ write_icu2(val, MFIRINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static void disable_sysint2_irq(unsigned int irq)
+void vr41xx_disable_firint(uint16_t mask)
{
- clear_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + FIR_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu2(MFIRINTREG);
+ val &= ~mask;
+ write_icu2(val, MFIRINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static unsigned int startup_sysint2_irq(unsigned int irq)
+void vr41xx_enable_pciint(void)
{
- set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + PCI_IRQ;
+ unsigned long flags;
- return 0; /* never anything pending */
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(PCIINT0, MPCIINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-#define shutdown_sysint2_irq disable_sysint2_irq
-#define ack_sysint2_irq disable_sysint2_irq
+void vr41xx_disable_pciint(void)
+{
+ irq_desc_t *desc = irq_desc + PCI_IRQ;
+ unsigned long flags;
-static void end_sysint2_irq(unsigned int irq)
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(0, MPCIINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+void vr41xx_enable_scuint(void)
{
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
- set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + SCU_IRQ;
+ unsigned long flags;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(SCUINT0, MSCUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static struct hw_interrupt_type sysint2_irq_type = {
- .typename = "SYSINT2",
- .startup = startup_sysint2_irq,
- .shutdown = shutdown_sysint2_irq,
- .enable = enable_sysint2_irq,
- .disable = disable_sysint2_irq,
- .ack = ack_sysint2_irq,
- .end = end_sysint2_irq,
-};
+void vr41xx_disable_scuint(void)
+{
+ irq_desc_t *desc = irq_desc + SCU_IRQ;
+ unsigned long flags;
-/*=======================================================================*/
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(0, MSCUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
-static void enable_giuint_irq(unsigned int irq)
+void vr41xx_enable_csiint(uint16_t mask)
{
- int pin;
+ irq_desc_t *desc = irq_desc + CSI_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu2(MCSIINTREG);
+ val |= mask;
+ write_icu2(val, MCSIINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
- pin = GIU_IRQ_TO_PIN(irq);
- if (pin < 16)
- set_icu1(MGIUINTLREG, (uint16_t)1 << pin);
- else
- set_icu2(MGIUINTHREG, (uint16_t)1 << (pin - 16));
- vr41xx_enable_giuint(pin);
+void vr41xx_disable_csiint(uint16_t mask)
+{
+ irq_desc_t *desc = irq_desc + CSI_IRQ;
+ unsigned long flags;
+ uint16_t val;
+
+ spin_lock_irqsave(&desc->lock, flags);
+ val = read_icu2(MCSIINTREG);
+ val &= ~mask;
+ write_icu2(val, MCSIINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static void disable_giuint_irq(unsigned int irq)
+void vr41xx_enable_bcuint(void)
{
- int pin;
+ irq_desc_t *desc = irq_desc + BCU_IRQ;
+ unsigned long flags;
- pin = GIU_IRQ_TO_PIN(irq);
- vr41xx_disable_giuint(pin);
- if (pin < 16)
- clear_icu1(MGIUINTLREG, (uint16_t)1 << pin);
- else
- clear_icu2(MGIUINTHREG, (uint16_t)1 << (pin - 16));
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(BCUINTR, MBCUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
}
-static unsigned int startup_giuint_irq(unsigned int irq)
+void vr41xx_disable_bcuint(void)
{
- vr41xx_clear_giuint(GIU_IRQ_TO_PIN(irq));
+ irq_desc_t *desc = irq_desc + BCU_IRQ;
+ unsigned long flags;
- enable_giuint_irq(irq);
+ spin_lock_irqsave(&desc->lock, flags);
+ write_icu2(0, MBCUINTREG);
+ spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+/*=======================================================================*/
+
+static unsigned int startup_sysint1_irq(unsigned int irq)
+{
+ set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
return 0; /* never anything pending */
}
-#define shutdown_giuint_irq disable_giuint_irq
-
-static void ack_giuint_irq(unsigned int irq)
+static void shutdown_sysint1_irq(unsigned int irq)
{
- disable_giuint_irq(irq);
+ clear_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
+}
- vr41xx_clear_giuint(GIU_IRQ_TO_PIN(irq));
+static void enable_sysint1_irq(unsigned int irq)
+{
+ set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
}
-static void end_giuint_irq(unsigned int irq)
+#define disable_sysint1_irq shutdown_sysint1_irq
+#define ack_sysint1_irq shutdown_sysint1_irq
+
+static void end_sysint1_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
- enable_giuint_irq(irq);
+ set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq));
}
-static struct hw_interrupt_type giuint_irq_type = {
- .typename = "GIUINT",
- .startup = startup_giuint_irq,
- .shutdown = shutdown_giuint_irq,
- .enable = enable_giuint_irq,
- .disable = disable_giuint_irq,
- .ack = ack_giuint_irq,
- .end = end_giuint_irq,
+static struct hw_interrupt_type sysint1_irq_type = {
+ .typename = "SYSINT1",
+ .startup = startup_sysint1_irq,
+ .shutdown = shutdown_sysint1_irq,
+ .enable = enable_sysint1_irq,
+ .disable = disable_sysint1_irq,
+ .ack = ack_sysint1_irq,
+ .end = end_sysint1_irq,
};
/*=======================================================================*/
-static struct irqaction icu_cascade = {no_action, 0, 0, "cascade", NULL, NULL};
-
-static void __init vr41xx_icu_init(void)
+static unsigned int startup_sysint2_irq(unsigned int irq)
{
- int i;
-
- switch (current_cpu_data.cputype) {
- case CPU_VR4111:
- case CPU_VR4121:
- icu1_base = SYSINT1REG_TYPE1;
- icu2_base = SYSINT2REG_TYPE1;
- break;
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- icu1_base = SYSINT1REG_TYPE2;
- icu2_base = SYSINT2REG_TYPE2;
- break;
- default:
- panic("Unexpected CPU of NEC VR4100 series");
- break;
- }
-
- write_icu1(0, MSYSINT1REG);
- write_icu1(0, MGIUINTLREG);
-
- write_icu2(0, MSYSINT2REG);
- write_icu2(0, MGIUINTHREG);
-
- for (i = SYSINT1_IRQ_BASE; i <= GIU_IRQ_LAST; i++) {
- if (i >= SYSINT1_IRQ_BASE && i <= SYSINT1_IRQ_LAST)
- irq_desc[i].handler = &sysint1_irq_type;
- else if (i >= SYSINT2_IRQ_BASE && i <= SYSINT2_IRQ_LAST)
- irq_desc[i].handler = &sysint2_irq_type;
- else if (i >= GIU_IRQ_BASE && i <= GIU_IRQ_LAST)
- irq_desc[i].handler = &giuint_irq_type;
- }
+ set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
- setup_irq(INT0_CASCADE_IRQ, &icu_cascade);
- setup_irq(INT1_CASCADE_IRQ, &icu_cascade);
- setup_irq(INT2_CASCADE_IRQ, &icu_cascade);
- setup_irq(INT3_CASCADE_IRQ, &icu_cascade);
- setup_irq(INT4_CASCADE_IRQ, &icu_cascade);
+ return 0; /* never anything pending */
}
-void __init init_IRQ(void)
+static void shutdown_sysint2_irq(unsigned int irq)
{
- memset(irq_desc, 0, sizeof(irq_desc));
+ clear_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+}
- init_generic_irq();
- mips_cpu_irq_init(MIPS_CPU_IRQ_BASE);
- vr41xx_icu_init();
+static void enable_sysint2_irq(unsigned int irq)
+{
+ set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
+}
- vr41xx_giuint_init();
+#define disable_sysint2_irq shutdown_sysint2_irq
+#define ack_sysint2_irq shutdown_sysint2_irq
- set_except_vector(0, vr41xx_handle_interrupt);
+static void end_sysint2_irq(unsigned int irq)
+{
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+ set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq));
}
+static struct hw_interrupt_type sysint2_irq_type = {
+ .typename = "SYSINT2",
+ .startup = startup_sysint2_irq,
+ .shutdown = shutdown_sysint2_irq,
+ .enable = enable_sysint2_irq,
+ .disable = disable_sysint2_irq,
+ .ack = ack_sysint2_irq,
+ .end = end_sysint2_irq,
+};
+
/*=======================================================================*/
static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)
return retval;
}
-/*=======================================================================*/
+EXPORT_SYMBOL(vr41xx_set_intassign);
-static inline void giuint_irq_dispatch(uint16_t pendl, uint16_t pendh,
- struct pt_regs *regs)
-{
- int i;
-
- if (pendl) {
- for (i = 0; i < 16; i++) {
- if (pendl & ((uint16_t)1 << i)) {
- giuint_do_IRQ(i, regs);
- return;
- }
- }
- } else {
- for (i = 0; i < 16; i++) {
- if (pendh & ((uint16_t)1 << i)) {
- giuint_do_IRQ(i + 16, regs);
- return;
- }
- }
- }
-}
+/*=======================================================================*/
asmlinkage void irq_dispatch(unsigned char intnum, struct pt_regs *regs)
{
- uint16_t pend1, pend2, pendl, pendh;
- uint16_t mask1, mask2, maskl, maskh;
+ uint16_t pend1, pend2;
+ uint16_t mask1, mask2;
int i;
pend1 = read_icu1(SYSINT1REG);
pend2 = read_icu2(SYSINT2REG);
mask2 = read_icu2(MSYSINT2REG);
- pendl = read_icu1(GIUINTLREG);
- maskl = read_icu1(MGIUINTLREG);
-
- pendh = read_icu2(GIUINTHREG);
- maskh = read_icu2(MGIUINTHREG);
-
mask1 &= pend1;
mask2 &= pend2;
- maskl &= pendl;
- maskh &= pendh;
if (mask1) {
for (i = 0; i < 16; i++) {
if (intnum == sysint1_assign[i] &&
(mask1 & ((uint16_t)1 << i))) {
- if (i == 8 && (maskl | maskh)) {
- giuint_irq_dispatch(maskl, maskh, regs);
- return;
- } else {
+ if (i == 8)
+ giuint_irq_dispatch(regs);
+ else
do_IRQ(SYSINT1_IRQ(i), regs);
- return;
- }
+ return;
}
}
}
}
}
- printk(KERN_ERR "spurious interrupt: %04x,%04x,%04x,%04x\n", pend1, pend2, pendl, pendh);
+ printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2);
+
atomic_inc(&irq_err_count);
}
+
+/*=======================================================================*/
+
+static int __init vr41xx_icu_init(void)
+{
+ switch (current_cpu_data.cputype) {
+ case CPU_VR4111:
+ case CPU_VR4121:
+ icu1_base = SYSINT1REG_TYPE1;
+ icu2_base = SYSINT2REG_TYPE1;
+ break;
+ case CPU_VR4122:
+ case CPU_VR4131:
+ case CPU_VR4133:
+ icu1_base = SYSINT1REG_TYPE2;
+ icu2_base = SYSINT2REG_TYPE2;
+ break;
+ default:
+ printk(KERN_ERR "ICU: Unexpected CPU of NEC VR4100 series\n");
+ return -EINVAL;
+ }
+
+ write_icu1(0, MSYSINT1REG);
+ write_icu1(0xffff, MGIUINTLREG);
+
+ write_icu2(0, MSYSINT2REG);
+ write_icu2(0xffff, MGIUINTHREG);
+
+ return 0;
+}
+
+early_initcall(vr41xx_icu_init);
+
+/*=======================================================================*/
+
+static struct irqaction icu_cascade = {no_action, 0, 0, "cascade", NULL, NULL};
+
+static inline void init_vr41xx_icu_irq(void)
+{
+ int i;
+
+ for (i = SYSINT1_IRQ_BASE; i <= SYSINT1_IRQ_LAST; i++)
+ irq_desc[i].handler = &sysint1_irq_type;
+
+ for (i = SYSINT2_IRQ_BASE; i <= SYSINT2_IRQ_LAST; i++)
+ irq_desc[i].handler = &sysint2_irq_type;
+
+ setup_irq(INT0_CASCADE_IRQ, &icu_cascade);
+ setup_irq(INT1_CASCADE_IRQ, &icu_cascade);
+ setup_irq(INT2_CASCADE_IRQ, &icu_cascade);
+ setup_irq(INT3_CASCADE_IRQ, &icu_cascade);
+ setup_irq(INT4_CASCADE_IRQ, &icu_cascade);
+}
+
+void __init init_IRQ(void)
+{
+ memset(irq_desc, 0, sizeof(irq_desc));
+
+ init_generic_irq();
+ mips_cpu_irq_init(MIPS_CPU_IRQ_BASE);
+ init_vr41xx_icu_irq();
+ init_vr41xx_giuint_irq();
+
+ set_except_vector(0, vr41xx_handle_interrupt);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff