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Diffstat (limited to 'arch/blackfin/mach-common/ints-priority.c')
-rw-r--r--arch/blackfin/mach-common/ints-priority.c331
1 files changed, 230 insertions, 101 deletions
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index 2729cba715b..7ca09ec2ca5 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/arch/blackfin/mach-common/ints-priority.c
@@ -26,8 +26,9 @@
#include <asm/gpio.h>
#include <asm/irq_handler.h>
#include <asm/dpmc.h>
+#include <asm/traps.h>
-#ifndef CONFIG_BF60x
+#ifndef SEC_GCTL
# define SIC_SYSIRQ(irq) (irq - (IRQ_CORETMR + 1))
#else
# define SIC_SYSIRQ(irq) ((irq) - IVG15)
@@ -56,7 +57,7 @@ unsigned long bfin_sic_iwr[3]; /* Up to 3 SIC_IWRx registers */
unsigned vr_wakeup;
#endif
-#ifndef CONFIG_BF60x
+#ifndef SEC_GCTL
static struct ivgx {
/* irq number for request_irq, available in mach-bf5xx/irq.h */
unsigned int irqno;
@@ -143,7 +144,7 @@ static void bfin_core_unmask_irq(struct irq_data *d)
void bfin_internal_mask_irq(unsigned int irq)
{
unsigned long flags = hard_local_irq_save();
-#ifndef CONFIG_BF60x
+#ifndef SEC_GCTL
#ifdef SIC_IMASK0
unsigned mask_bank = SIC_SYSIRQ(irq) / 32;
unsigned mask_bit = SIC_SYSIRQ(irq) % 32;
@@ -175,7 +176,7 @@ void bfin_internal_unmask_irq(unsigned int irq)
{
unsigned long flags = hard_local_irq_save();
-#ifndef CONFIG_BF60x
+#ifndef SEC_GCTL
#ifdef SIC_IMASK0
unsigned mask_bank = SIC_SYSIRQ(irq) / 32;
unsigned mask_bit = SIC_SYSIRQ(irq) % 32;
@@ -199,7 +200,7 @@ void bfin_internal_unmask_irq(unsigned int irq)
hard_local_irq_restore(flags);
}
-#ifdef CONFIG_BF60x
+#ifdef SEC_GCTL
static void bfin_sec_preflow_handler(struct irq_data *d)
{
unsigned long flags = hard_local_irq_save();
@@ -310,7 +311,24 @@ static void bfin_sec_disable(struct irq_data *d)
hard_local_irq_restore(flags);
}
-static void bfin_sec_raise_irq(unsigned int sid)
+static void bfin_sec_set_priority(unsigned int sec_int_levels, u8 *sec_int_priority)
+{
+ unsigned long flags = hard_local_irq_save();
+ uint32_t reg_sctl;
+ int i;
+
+ bfin_write_SEC_SCI(0, SEC_CPLVL, sec_int_levels);
+
+ for (i = 0; i < SYS_IRQS - BFIN_IRQ(0); i++) {
+ reg_sctl = bfin_read_SEC_SCTL(i) & ~SEC_SCTL_PRIO;
+ reg_sctl |= sec_int_priority[i] << SEC_SCTL_PRIO_OFFSET;
+ bfin_write_SEC_SCTL(i, reg_sctl);
+ }
+
+ hard_local_irq_restore(flags);
+}
+
+void bfin_sec_raise_irq(unsigned int sid)
{
unsigned long flags = hard_local_irq_save();
@@ -396,24 +414,34 @@ void handle_sec_fault(unsigned int irq, struct irq_desc *desc)
raw_spin_unlock(&desc->lock);
}
-static int sec_suspend(void)
+void handle_core_fault(unsigned int irq, struct irq_desc *desc)
{
- return 0;
-}
+ struct pt_regs *fp = get_irq_regs();
-static void sec_resume(void)
-{
- bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_RESET);
- udelay(100);
- bfin_write_SEC_GCTL(SEC_GCTL_EN);
- bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_EN | SEC_CCTL_NMI_EN);
-}
+ raw_spin_lock(&desc->lock);
-static struct syscore_ops sec_pm_syscore_ops = {
- .suspend = sec_suspend,
- .resume = sec_resume,
-};
+ switch (irq) {
+ case IRQ_C0_DBL_FAULT:
+ double_fault_c(fp);
+ break;
+ case IRQ_C0_HW_ERR:
+ dump_bfin_process(fp);
+ dump_bfin_mem(fp);
+ show_regs(fp);
+ printk(KERN_NOTICE "Kernel Stack\n");
+ show_stack(current, NULL);
+ print_modules();
+ panic("Kernel core hardware error");
+ break;
+ case IRQ_C0_NMI_L1_PARITY_ERR:
+ panic("NMI occurs unexpectedly");
+ break;
+ default:
+ panic("Core 1 fault occurs unexpectedly");
+ }
+ raw_spin_unlock(&desc->lock);
+}
#endif
#ifdef CONFIG_SMP
@@ -437,7 +465,7 @@ static void bfin_internal_unmask_irq_chip(struct irq_data *d)
}
#endif
-#if defined(CONFIG_PM) && !defined(CONFIG_BF60x)
+#if defined(CONFIG_PM) && !defined(SEC_GCTL)
int bfin_internal_set_wake(unsigned int irq, unsigned int state)
{
u32 bank, bit, wakeup = 0;
@@ -496,7 +524,10 @@ static int bfin_internal_set_wake_chip(struct irq_data *d, unsigned int state)
return bfin_internal_set_wake(d->irq, state);
}
#else
-# define bfin_internal_set_wake(irq, state)
+inline int bfin_internal_set_wake(unsigned int irq, unsigned int state)
+{
+ return 0;
+}
# define bfin_internal_set_wake_chip NULL
#endif
@@ -518,7 +549,7 @@ static struct irq_chip bfin_internal_irqchip = {
.irq_set_wake = bfin_internal_set_wake_chip,
};
-#ifdef CONFIG_BF60x
+#ifdef SEC_GCTL
static struct irq_chip bfin_sec_irqchip = {
.name = "SEC",
.irq_mask_ack = bfin_sec_mask_ack_irq,
@@ -868,14 +899,6 @@ void bfin_demux_gpio_irq(unsigned int inta_irq,
#else
-# ifndef CONFIG_BF60x
-#define NR_PINT_SYS_IRQS 4
-#define NR_PINTS 160
-# else
-#define NR_PINT_SYS_IRQS 6
-#define NR_PINTS 112
-#endif
-
#define NR_PINT_BITS 32
#define IRQ_NOT_AVAIL 0xFF
@@ -897,29 +920,21 @@ static struct bfin_pint_regs * const pint[NR_PINT_SYS_IRQS] = {
#endif
};
-#ifndef CONFIG_BF60x
inline unsigned int get_irq_base(u32 bank, u8 bmap)
{
unsigned int irq_base;
+#ifndef CONFIG_BF60x
if (bank < 2) { /*PA-PB */
irq_base = IRQ_PA0 + bmap * 16;
} else { /*PC-PJ */
irq_base = IRQ_PC0 + bmap * 16;
}
-
- return irq_base;
-}
#else
-inline unsigned int get_irq_base(u32 bank, u8 bmap)
-{
- unsigned int irq_base;
-
irq_base = IRQ_PA0 + bank * 16 + bmap * 16;
-
+#endif
return irq_base;
}
-#endif
/* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
void init_pint_lut(void)
@@ -1089,6 +1104,9 @@ static int bfin_gpio_irq_type(struct irq_data *d, unsigned int type)
}
#ifdef CONFIG_PM
+static struct bfin_pm_pint_save save_pint_reg[NR_PINT_SYS_IRQS];
+static u32 save_pint_sec_ctl[NR_PINT_SYS_IRQS];
+
static int bfin_gpio_set_wake(struct irq_data *d, unsigned int state)
{
u32 pint_irq;
@@ -1124,6 +1142,59 @@ static int bfin_gpio_set_wake(struct irq_data *d, unsigned int state)
return 0;
}
+
+void bfin_pint_suspend(void)
+{
+ u32 bank;
+
+ for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++) {
+ save_pint_reg[bank].mask_set = pint[bank]->mask_set;
+ save_pint_reg[bank].assign = pint[bank]->assign;
+ save_pint_reg[bank].edge_set = pint[bank]->edge_set;
+ save_pint_reg[bank].invert_set = pint[bank]->invert_set;
+ }
+}
+
+void bfin_pint_resume(void)
+{
+ u32 bank;
+
+ for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++) {
+ pint[bank]->mask_set = save_pint_reg[bank].mask_set;
+ pint[bank]->assign = save_pint_reg[bank].assign;
+ pint[bank]->edge_set = save_pint_reg[bank].edge_set;
+ pint[bank]->invert_set = save_pint_reg[bank].invert_set;
+ }
+}
+
+#ifdef SEC_GCTL
+static int sec_suspend(void)
+{
+ u32 bank;
+
+ for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++)
+ save_pint_sec_ctl[bank] = bfin_read_SEC_SCTL(bank + SIC_SYSIRQ(IRQ_PINT0));
+ return 0;
+}
+
+static void sec_resume(void)
+{
+ u32 bank;
+
+ bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_RESET);
+ udelay(100);
+ bfin_write_SEC_GCTL(SEC_GCTL_EN);
+ bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_EN | SEC_CCTL_NMI_EN);
+
+ for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++)
+ bfin_write_SEC_SCTL(bank + SIC_SYSIRQ(IRQ_PINT0), save_pint_sec_ctl[bank]);
+}
+
+static struct syscore_ops sec_pm_syscore_ops = {
+ .suspend = sec_suspend,
+ .resume = sec_resume,
+};
+#endif
#else
# define bfin_gpio_set_wake NULL
#endif
@@ -1230,6 +1301,7 @@ void __cpuinit init_exception_vectors(void)
CSYNC();
}
+#ifndef SEC_GCTL
/*
* This function should be called during kernel startup to initialize
* the BFin IRQ handling routines.
@@ -1240,7 +1312,6 @@ int __init init_arch_irq(void)
int irq;
unsigned long ilat = 0;
-#ifndef CONFIG_BF60x
/* Disable all the peripheral intrs - page 4-29 HW Ref manual */
#ifdef SIC_IMASK0
bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
@@ -1255,9 +1326,6 @@ int __init init_arch_irq(void)
#else
bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
#endif
-#else /* CONFIG_BF60x */
- bfin_write_SEC_GCTL(SEC_GCTL_RESET);
-#endif
local_irq_disable();
@@ -1267,10 +1335,6 @@ int __init init_arch_irq(void)
pint[1]->assign = CONFIG_PINT1_ASSIGN;
pint[2]->assign = CONFIG_PINT2_ASSIGN;
pint[3]->assign = CONFIG_PINT3_ASSIGN;
-# ifdef CONFIG_BF60x
- pint[4]->assign = CONFIG_PINT4_ASSIGN;
- pint[5]->assign = CONFIG_PINT5_ASSIGN;
-# endif
# endif
/* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
init_pint_lut();
@@ -1283,7 +1347,6 @@ int __init init_arch_irq(void)
irq_set_chip(irq, &bfin_internal_irqchip);
switch (irq) {
-#ifndef CONFIG_BF60x
#if BFIN_GPIO_PINT
case IRQ_PINT0:
case IRQ_PINT1:
@@ -1319,7 +1382,6 @@ int __init init_arch_irq(void)
irq_set_handler(irq, handle_percpu_irq);
break;
#endif
-#endif
#ifdef CONFIG_TICKSOURCE_CORETMR
case IRQ_CORETMR:
@@ -1349,8 +1411,7 @@ int __init init_arch_irq(void)
init_mach_irq();
-#ifndef CONFIG_BF60x
-#if (defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)) && !defined(CONFIG_BF60x)
+#if (defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
for (irq = IRQ_MAC_PHYINT; irq <= IRQ_MAC_STMDONE; irq++)
irq_set_chip_and_handler(irq, &bfin_mac_status_irqchip,
handle_level_irq);
@@ -1360,28 +1421,6 @@ int __init init_arch_irq(void)
irq < (GPIO_IRQ_BASE + MAX_BLACKFIN_GPIOS); irq++)
irq_set_chip_and_handler(irq, &bfin_gpio_irqchip,
handle_level_irq);
-#else
- for (irq = BFIN_IRQ(0); irq <= SYS_IRQS; irq++) {
- if (irq < CORE_IRQS) {
- irq_set_chip(irq, &bfin_sec_irqchip);
- __irq_set_handler(irq, handle_sec_fault, 0, NULL);
- } else if (irq >= BFIN_IRQ(21) && irq <= BFIN_IRQ(26)) {
- irq_set_chip(irq, &bfin_sec_irqchip);
- irq_set_chained_handler(irq, bfin_demux_gpio_irq);
- } else if (irq >= BFIN_IRQ(34) && irq <= BFIN_IRQ(37)) {
- irq_set_chip(irq, &bfin_sec_irqchip);
- irq_set_handler(irq, handle_percpu_irq);
- } else {
- irq_set_chip_and_handler(irq, &bfin_sec_irqchip,
- handle_fasteoi_irq);
- __irq_set_preflow_handler(irq, bfin_sec_preflow_handler);
- }
- }
- for (irq = GPIO_IRQ_BASE;
- irq < (GPIO_IRQ_BASE + MAX_BLACKFIN_GPIOS); irq++)
- irq_set_chip_and_handler(irq, &bfin_gpio_irqchip,
- handle_level_irq);
-#endif
bfin_write_IMASK(0);
CSYNC();
ilat = bfin_read_ILAT();
@@ -1393,7 +1432,6 @@ int __init init_arch_irq(void)
/* IMASK=xxx is equivalent to STI xx or bfin_irq_flags=xx,
* local_irq_enable()
*/
-#ifndef CONFIG_BF60x
program_IAR();
/* Therefore it's better to setup IARs before interrupts enabled */
search_IAR();
@@ -1427,23 +1465,6 @@ int __init init_arch_irq(void)
#else
bfin_write_SIC_IWR(IWR_DISABLE_ALL);
#endif
-#else /* CONFIG_BF60x */
- /* Enable interrupts IVG7-15 */
- bfin_irq_flags |= IMASK_IVG15 |
- IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
- IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
-
-
- bfin_write_SEC_FCTL(SEC_FCTL_EN | SEC_FCTL_SYSRST_EN | SEC_FCTL_FLTIN_EN);
- bfin_sec_enable_sci(SIC_SYSIRQ(IRQ_WATCH0));
- bfin_sec_enable_ssi(SIC_SYSIRQ(IRQ_WATCH0));
- bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_RESET);
- udelay(100);
- bfin_write_SEC_GCTL(SEC_GCTL_EN);
- bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_EN | SEC_CCTL_NMI_EN);
- init_software_driven_irq();
- register_syscore_ops(&sec_pm_syscore_ops);
-#endif
return 0;
}
@@ -1452,14 +1473,11 @@ __attribute__((l1_text))
#endif
static int vec_to_irq(int vec)
{
-#ifndef CONFIG_BF60x
struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
unsigned long sic_status[3];
-#endif
if (likely(vec == EVT_IVTMR_P))
return IRQ_CORETMR;
-#ifndef CONFIG_BF60x
#ifdef SIC_ISR
sic_status[0] = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
#else
@@ -1488,11 +1506,119 @@ static int vec_to_irq(int vec)
#endif
return ivg->irqno;
}
-#else
- /* for bf60x read */
+}
+
+#else /* SEC_GCTL */
+
+/*
+ * This function should be called during kernel startup to initialize
+ * the BFin IRQ handling routines.
+ */
+
+int __init init_arch_irq(void)
+{
+ int irq;
+ unsigned long ilat = 0;
+
+ bfin_write_SEC_GCTL(SEC_GCTL_RESET);
+
+ local_irq_disable();
+
+#if BFIN_GPIO_PINT
+# ifdef CONFIG_PINTx_REASSIGN
+ pint[0]->assign = CONFIG_PINT0_ASSIGN;
+ pint[1]->assign = CONFIG_PINT1_ASSIGN;
+ pint[2]->assign = CONFIG_PINT2_ASSIGN;
+ pint[3]->assign = CONFIG_PINT3_ASSIGN;
+ pint[4]->assign = CONFIG_PINT4_ASSIGN;
+ pint[5]->assign = CONFIG_PINT5_ASSIGN;
+# endif
+ /* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
+ init_pint_lut();
+#endif
+
+ for (irq = 0; irq <= SYS_IRQS; irq++) {
+ if (irq <= IRQ_CORETMR) {
+ irq_set_chip(irq, &bfin_core_irqchip);
+#ifdef CONFIG_TICKSOURCE_CORETMR
+ if (irq == IRQ_CORETMR)
+# ifdef CONFIG_SMP
+ irq_set_handler(irq, handle_percpu_irq);
+# else
+ irq_set_handler(irq, handle_simple_irq);
+# endif
+#endif
+ } else if (irq < BFIN_IRQ(0)) {
+ irq_set_chip_and_handler(irq, &bfin_internal_irqchip,
+ handle_simple_irq);
+ } else if (irq == IRQ_SEC_ERR) {
+ irq_set_chip_and_handler(irq, &bfin_sec_irqchip,
+ handle_sec_fault);
+ } else if (irq < CORE_IRQS && irq >= IRQ_C0_DBL_FAULT) {
+ irq_set_chip_and_handler(irq, &bfin_sec_irqchip,
+ handle_core_fault);
+ } else if (irq >= BFIN_IRQ(21) && irq <= BFIN_IRQ(26)) {
+ irq_set_chip(irq, &bfin_sec_irqchip);
+ irq_set_chained_handler(irq, bfin_demux_gpio_irq);
+ } else if (irq >= BFIN_IRQ(34) && irq <= BFIN_IRQ(37)) {
+ irq_set_chip(irq, &bfin_sec_irqchip);
+ irq_set_handler(irq, handle_percpu_irq);
+ } else {
+ irq_set_chip_and_handler(irq, &bfin_sec_irqchip,
+ handle_fasteoi_irq);
+ __irq_set_preflow_handler(irq, bfin_sec_preflow_handler);
+ }
+ }
+ for (irq = GPIO_IRQ_BASE;
+ irq < (GPIO_IRQ_BASE + MAX_BLACKFIN_GPIOS); irq++)
+ irq_set_chip_and_handler(irq, &bfin_gpio_irqchip,
+ handle_level_irq);
+
+ bfin_write_IMASK(0);
+ CSYNC();
+ ilat = bfin_read_ILAT();
+ CSYNC();
+ bfin_write_ILAT(ilat);
+ CSYNC();
+
+ printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n");
+
+ bfin_sec_set_priority(CONFIG_SEC_IRQ_PRIORITY_LEVELS, sec_int_priority);
+
+ bfin_sec_set_priority(CONFIG_SEC_IRQ_PRIORITY_LEVELS, sec_int_priority);
+
+ /* Enable interrupts IVG7-15 */
+ bfin_irq_flags |= IMASK_IVG15 |
+ IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
+ IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
+
+
+ bfin_write_SEC_FCTL(SEC_FCTL_EN | SEC_FCTL_SYSRST_EN | SEC_FCTL_FLTIN_EN);
+ bfin_sec_enable_sci(SIC_SYSIRQ(IRQ_WATCH0));
+ bfin_sec_enable_ssi(SIC_SYSIRQ(IRQ_WATCH0));
+ bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_RESET);
+ udelay(100);
+ bfin_write_SEC_GCTL(SEC_GCTL_EN);
+ bfin_write_SEC_SCI(0, SEC_CCTL, SEC_CCTL_EN | SEC_CCTL_NMI_EN);
+ bfin_write_SEC_SCI(1, SEC_CCTL, SEC_CCTL_EN | SEC_CCTL_NMI_EN);
+
+ init_software_driven_irq();
+ register_syscore_ops(&sec_pm_syscore_ops);
+
+ return 0;
+}
+
+#ifdef CONFIG_DO_IRQ_L1
+__attribute__((l1_text))
+#endif
+static int vec_to_irq(int vec)
+{
+ if (likely(vec == EVT_IVTMR_P))
+ return IRQ_CORETMR;
+
return BFIN_IRQ(bfin_read_SEC_SCI(0, SEC_CSID));
-#endif /* end of CONFIG_BF60x */
}
+#endif /* SEC_GCTL */
#ifdef CONFIG_DO_IRQ_L1
__attribute__((l1_text))
@@ -1514,6 +1640,10 @@ int __ipipe_get_irq_priority(unsigned irq)
if (irq <= IRQ_CORETMR)
return irq;
+#ifdef SEC_GCTL
+ if (irq >= BFIN_IRQ(0))
+ return IVG11;
+#else
for (ient = 0; ient < NR_PERI_INTS; ient++) {
struct ivgx *ivg = ivg_table + ient;
if (ivg->irqno == irq) {
@@ -1524,6 +1654,7 @@ int __ipipe_get_irq_priority(unsigned irq)
}
}
}
+#endif
return IVG15;
}
@@ -1536,8 +1667,6 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs)
{
struct ipipe_percpu_domain_data *p = ipipe_root_cpudom_ptr();
struct ipipe_domain *this_domain = __ipipe_current_domain;
- struct ivgx *ivg_stop = ivg7_13[vec-IVG7].istop;
- struct ivgx *ivg = ivg7_13[vec-IVG7].ifirst;
int irq, s = 0;
irq = vec_to_irq(vec);