* Author:
*
* Created: ?
- * Description: Set up the interupt priorities
+ * Description: Set up the interrupt priorities
*
* Modified:
* 1996 Roman Zippel
* 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
* 2003 Metrowerks/Motorola
* 2003 Bas Vermeulen <bas@buyways.nl>
- * Copyright 2004-2006 Analog Devices Inc.
+ * Copyright 2004-2007 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
struct ivgx {
/* irq number for request_irq, available in mach-bf533/irq.h */
- int irqno;
+ unsigned int irqno;
/* corresponding bit in the SIC_ISR register */
- int isrflag;
+ unsigned int isrflag;
} ivg_table[NR_PERI_INTS];
struct ivg_slice {
for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) {
int irqn;
- ivg7_13[ivg].istop = ivg7_13[ivg].ifirst =
- &ivg_table[irq_pos];
+ ivg7_13[ivg].istop = ivg7_13[ivg].ifirst = &ivg_table[irq_pos];
for (irqn = 0; irqn < NR_PERI_INTS; irqn++) {
int iar_shift = (irqn & 7) * 4;
if (ivg ==
(0xf &
- bfin_read32((unsigned long *) SIC_IAR0 +
+ bfin_read32((unsigned long *)SIC_IAR0 +
(irqn >> 3)) >> iar_shift)) {
ivg_table[irq_pos].irqno = IVG7 + irqn;
- ivg_table[irq_pos].isrflag = 1 << irqn;
+ ivg_table[irq_pos].isrflag = 1 << (irqn % 32);
ivg7_13[ivg].istop++;
irq_pos++;
}
static void bfin_internal_mask_irq(unsigned int irq)
{
+#ifndef CONFIG_BF54x
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
~(1 << (irq - (IRQ_CORETMR + 1))));
+#else
+ unsigned mask_bank, mask_bit;
+ mask_bank = (irq - (IRQ_CORETMR + 1)) / 32;
+ mask_bit = (irq - (IRQ_CORETMR + 1)) % 32;
+ bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) &
+ ~(1 << mask_bit));
+#endif
SSYNC();
}
static void bfin_internal_unmask_irq(unsigned int irq)
{
+#ifndef CONFIG_BF54x
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() |
(1 << (irq - (IRQ_CORETMR + 1))));
+#else
+ unsigned mask_bank, mask_bit;
+ mask_bank = (irq - (IRQ_CORETMR + 1)) / 32;
+ mask_bit = (irq - (IRQ_CORETMR + 1)) % 32;
+ bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) |
+ (1 << mask_bit));
+#endif
SSYNC();
}
};
static void bfin_demux_error_irq(unsigned int int_err_irq,
- struct irq_desc *intb_desc)
+ struct irq_desc *intb_desc)
{
int irq = 0;
}
pr_debug("IRQ %d:"
- " MASKED PERIPHERAL ERROR INTERRUPT ASSERTED\n",
- irq);
+ " MASKED PERIPHERAL ERROR INTERRUPT ASSERTED\n",
+ irq);
}
} else
printk(KERN_ERR
" INTERRUPT ASSERTED BUT NO SOURCE FOUND\n",
__FUNCTION__, __FILE__, __LINE__);
-
}
#endif /* BF537_GENERIC_ERROR_INT_DEMUX */
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
+#if defined(CONFIG_IRQCHIP_DEMUX_GPIO) && !defined(CONFIG_BF54x)
static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
static unsigned short gpio_edge_triggered[gpio_bank(MAX_BLACKFIN_GPIOS)];
}
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING |
- IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- {
+ IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
ret = gpio_request(gpionr, NULL);
if (ret)
return 0;
}
-
static struct irq_chip bfin_gpio_irqchip = {
.ack = bfin_gpio_ack_irq,
.mask = bfin_gpio_mask_irq,
};
static void bfin_demux_gpio_irq(unsigned int intb_irq,
- struct irq_desc *intb_desc)
+ struct irq_desc *intb_desc)
{
u16 i;
+ struct irq_desc *desc;
- for (i = 0; i < MAX_BLACKFIN_GPIOS; i+=16) {
+ for (i = 0; i < MAX_BLACKFIN_GPIOS; i += 16) {
int irq = IRQ_PF0 + i;
int flag_d = get_gpiop_data(i);
int mask =
- flag_d & (gpio_enabled[gpio_bank(i)] &
- get_gpiop_maska(i));
+ flag_d & (gpio_enabled[gpio_bank(i)] & get_gpiop_maska(i));
while (mask) {
if (mask & 1) {
- struct irq_desc *desc = irq_desc + irq;
+ desc = irq_desc + irq;
desc->handle_irq(irq, desc);
}
irq++;
}
}
+#else /* CONFIG_IRQCHIP_DEMUX_GPIO */
+
+#define NR_PINT_SYS_IRQS 4
+#define NR_PINT_BITS 32
+#define NR_PINTS 160
+#define IRQ_NOT_AVAIL 0xFF
+
+#define PINT_2_BANK(x) ((x) >> 5)
+#define PINT_2_BIT(x) ((x) & 0x1F)
+#define PINT_BIT(x) (1 << (PINT_2_BIT(x)))
+
+static unsigned char irq2pint_lut[NR_PINTS];
+static unsigned char pint2irq_lut[NR_PINT_SYS_IRQS * NR_PINT_BITS];
+
+struct pin_int_t {
+ unsigned int mask_set;
+ unsigned int mask_clear;
+ unsigned int request;
+ unsigned int assign;
+ unsigned int edge_set;
+ unsigned int edge_clear;
+ unsigned int invert_set;
+ unsigned int invert_clear;
+ unsigned int pinstate;
+ unsigned int latch;
+};
+
+static struct pin_int_t *pint[NR_PINT_SYS_IRQS] = {
+ (struct pin_int_t *)PINT0_MASK_SET,
+ (struct pin_int_t *)PINT1_MASK_SET,
+ (struct pin_int_t *)PINT2_MASK_SET,
+ (struct pin_int_t *)PINT3_MASK_SET,
+};
+
+unsigned short get_irq_base(u8 bank, u8 bmap)
+{
+
+ u16 irq_base;
+
+ if (bank < 2) { /*PA-PB */
+ irq_base = IRQ_PA0 + bmap * 16;
+ } else { /*PC-PJ */
+ irq_base = IRQ_PC0 + bmap * 16;
+ }
+
+ return irq_base;
+
+}
+
+ /* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
+void init_pint_lut(void)
+{
+ u16 bank, bit, irq_base, bit_pos;
+ u32 pint_assign;
+ u8 bmap;
+
+ memset(irq2pint_lut, IRQ_NOT_AVAIL, sizeof(irq2pint_lut));
+
+ for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++) {
+
+ pint_assign = pint[bank]->assign;
+
+ for (bit = 0; bit < NR_PINT_BITS; bit++) {
+
+ bmap = (pint_assign >> ((bit / 8) * 8)) & 0xFF;
+
+ irq_base = get_irq_base(bank, bmap);
+
+ irq_base += (bit % 8) + ((bit / 8) & 1 ? 8 : 0);
+ bit_pos = bit + bank * NR_PINT_BITS;
+
+ pint2irq_lut[bit_pos] = irq_base - SYS_IRQS;
+ irq2pint_lut[irq_base - SYS_IRQS] = bit_pos;
+
+ }
+
+ }
+
+}
+
+static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
+
+static void bfin_gpio_ack_irq(unsigned int irq)
+{
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+
+ pint[PINT_2_BANK(pint_val)]->request = PINT_BIT(pint_val);
+ SSYNC();
+}
+
+static void bfin_gpio_mask_ack_irq(unsigned int irq)
+{
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ u32 pintbit = PINT_BIT(pint_val);
+ u8 bank = PINT_2_BANK(pint_val);
+
+ pint[bank]->request = pintbit;
+ pint[bank]->mask_clear = pintbit;
+ SSYNC();
+}
+
+static void bfin_gpio_mask_irq(unsigned int irq)
+{
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+
+ pint[PINT_2_BANK(pint_val)]->mask_clear = PINT_BIT(pint_val);
+ SSYNC();
+}
+
+static void bfin_gpio_unmask_irq(unsigned int irq)
+{
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ u32 pintbit = PINT_BIT(pint_val);
+ u8 bank = PINT_2_BANK(pint_val);
+
+ pint[bank]->request = pintbit;
+ pint[bank]->mask_set = pintbit;
+ SSYNC();
+}
+
+static unsigned int bfin_gpio_irq_startup(unsigned int irq)
+{
+ unsigned int ret;
+ u16 gpionr = irq - IRQ_PA0;
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+
+ if (pint_val == IRQ_NOT_AVAIL)
+ return -ENODEV;
+
+ if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
+ ret = gpio_request(gpionr, NULL);
+ if (ret)
+ return ret;
+ }
+
+ gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
+ bfin_gpio_unmask_irq(irq);
+
+ return ret;
+}
+
+static void bfin_gpio_irq_shutdown(unsigned int irq)
+{
+ bfin_gpio_mask_irq(irq);
+ gpio_free(irq - IRQ_PA0);
+ gpio_enabled[gpio_bank(irq - IRQ_PA0)] &= ~gpio_bit(irq - IRQ_PA0);
+}
+
+static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
+{
+
+ unsigned int ret;
+ u16 gpionr = irq - IRQ_PA0;
+ u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ u32 pintbit = PINT_BIT(pint_val);
+ u8 bank = PINT_2_BANK(pint_val);
+
+ if (pint_val == IRQ_NOT_AVAIL)
+ return -ENODEV;
+
+ if (type == IRQ_TYPE_PROBE) {
+ /* only probe unenabled GPIO interrupt lines */
+ if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))
+ return 0;
+ type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
+ }
+
+ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING |
+ IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
+ if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
+ ret = gpio_request(gpionr, NULL);
+ if (ret)
+ return ret;
+ }
+
+ gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
+ } else {
+ gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
+ return 0;
+ }
+
+ gpio_direction_input(gpionr);
+
+ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
+ pint[bank]->edge_set = pintbit;
+ } else {
+ pint[bank]->edge_clear = pintbit;
+ }
+
+ if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW)))
+ pint[bank]->invert_set = pintbit; /* low or falling edge denoted by one */
+ else
+ pint[bank]->invert_set = pintbit; /* high or rising edge denoted by zero */
+
+ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
+ pint[bank]->invert_set = pintbit;
+ else
+ pint[bank]->invert_set = pintbit;
+
+ SSYNC();
+
+ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
+ set_irq_handler(irq, handle_edge_irq);
+ else
+ set_irq_handler(irq, handle_level_irq);
+
+ return 0;
+}
+
+static struct irq_chip bfin_gpio_irqchip = {
+ .ack = bfin_gpio_ack_irq,
+ .mask = bfin_gpio_mask_irq,
+ .mask_ack = bfin_gpio_mask_ack_irq,
+ .unmask = bfin_gpio_unmask_irq,
+ .set_type = bfin_gpio_irq_type,
+ .startup = bfin_gpio_irq_startup,
+ .shutdown = bfin_gpio_irq_shutdown
+};
+
+static void bfin_demux_gpio_irq(unsigned int intb_irq,
+ struct irq_desc *intb_desc)
+{
+ u8 bank, pint_val;
+ u32 request, irq;
+ struct irq_desc *desc;
+
+ switch (intb_irq) {
+ case IRQ_PINT0:
+ bank = 0;
+ break;
+ case IRQ_PINT2:
+ bank = 2;
+ break;
+ case IRQ_PINT3:
+ bank = 3;
+ break;
+ case IRQ_PINT1:
+ bank = 1;
+ break;
+ default:
+ return;
+ }
+
+ pint_val = bank * NR_PINT_BITS;
+
+ request = pint[bank]->request;
+
+ while (request) {
+ if (request & 1) {
+ irq = pint2irq_lut[pint_val] + SYS_IRQS;
+ desc = irq_desc + irq;
+ desc->handle_irq(irq, desc);
+ }
+ pint_val++;
+ request >>= 1;
+ }
+
+}
#endif /* CONFIG_IRQCHIP_DEMUX_GPIO */
/*
int irq;
unsigned long ilat = 0;
/* Disable all the peripheral intrs - page 4-29 HW Ref manual */
+#ifdef CONFIG_BF54x
+ bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
+ bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
+ bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
+ bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
+ bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
+ bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
+#else
bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
+ bfin_write_SIC_IWR(IWR_ENABLE_ALL);
+#endif
+
SSYNC();
local_irq_disable();
bfin_write_EVT15(evt_system_call);
CSYNC();
- for (irq = 0; irq < SYS_IRQS; irq++) {
+#if defined(CONFIG_IRQCHIP_DEMUX_GPIO) && defined(CONFIG_BF54x)
+#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;
+#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)
set_irq_chip(irq, &bfin_core_irqchip);
else
if (irq != IRQ_GENERIC_ERROR) {
#endif
+ switch (irq) {
#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
- if ((irq != IRQ_PROG_INTA) /*PORT F & G MASK_A Interrupt*/
-# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
- && (irq != IRQ_MAC_RX) /*PORT H MASK_A Interrupt*/
-# endif
- ) {
+#ifndef CONFIG_BF54x
+ case IRQ_PROG_INTA:
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
+#if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
+ case IRQ_MAC_RX:
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
#endif
- set_irq_handler(irq, handle_simple_irq);
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
- } else {
+#else
+ case IRQ_PINT0:
set_irq_chained_handler(irq,
bfin_demux_gpio_irq);
- }
+ break;
+ case IRQ_PINT1:
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
+ case IRQ_PINT2:
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
+ case IRQ_PINT3:
+ set_irq_chained_handler(irq,
+ bfin_demux_gpio_irq);
+ break;
+#endif /*CONFIG_BF54x */
#endif
+ default:
+ set_irq_handler(irq, handle_simple_irq);
+ break;
+ }
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
} else {
#endif
#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
+#ifndef CONFIG_BF54x
for (irq = IRQ_PF0; irq < NR_IRQS; irq++) {
+#else
+ for (irq = IRQ_PA0; irq < NR_IRQS; irq++) {
+#endif
set_irq_chip(irq, &bfin_gpio_irqchip);
/* if configured as edge, then will be changed to do_edge_IRQ */
set_irq_handler(irq, handle_level_irq);
bfin_write_ILAT(ilat);
CSYNC();
- printk(KERN_INFO
- "Configuring Blackfin Priority Driven Interrupts\n");
+ printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n");
/* IMASK=xxx is equivalent to STI xx or irq_flags=xx,
* local_irq_enable()
*/
/* Enable interrupts IVG7-15 */
irq_flags = irq_flags | IMASK_IVG15 |
IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
- IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 |
- IMASK_IVGHW;
+ IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
return 0;
}
#ifdef CONFIG_DO_IRQ_L1
-void do_irq(int vec, struct pt_regs *fp)__attribute__((l1_text));
+void do_irq(int vec, struct pt_regs *fp) __attribute__((l1_text));
#endif
void do_irq(int vec, struct pt_regs *fp)
} else {
struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
- unsigned long sic_status;
+#ifdef CONFIG_BF54x
+ unsigned long sic_status[3];
+ SSYNC();
+ sic_status[0] = bfin_read_SIC_ISR(0) & bfin_read_SIC_IMASK(0);
+ sic_status[1] = bfin_read_SIC_ISR(1) & bfin_read_SIC_IMASK(1);
+ sic_status[2] = bfin_read_SIC_ISR(2) & bfin_read_SIC_IMASK(2);
+
+ for (;; ivg++) {
+ if (ivg >= ivg_stop) {
+ atomic_inc(&num_spurious);
+ return;
+ }
+ if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag)
+ break;
+ }
+#else
+ unsigned long sic_status;
SSYNC();
sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
} else if (sic_status & ivg->isrflag)
break;
}
+#endif
vec = ivg->irqno;
}
asm_do_IRQ(vec, fp);
git.samba.org / sfrench / cifs-2.6.git / blobdiff