/*
- * File: arch/blackfin/mach-common/ints-priority.c
- * Based on:
- * Author:
+ * Set up the interrupt priorities
*
- * Created: ?
- * Description: Set up the interrupt priorities
+ * Copyright 2004-2009 Analog Devices Inc.
+ * 2003 Bas Vermeulen <bas@buyways.nl>
+ * 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
+ * 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
+ * 1999 D. Jeff Dionne <jeff@uclinux.org>
+ * 1996 Roman Zippel
*
- * Modified:
- * 1996 Roman Zippel
- * 1999 D. Jeff Dionne <jeff@uclinux.org>
- * 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
- * 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
- * 2003 Metrowerks/Motorola
- * 2003 Bas Vermeulen <bas@buyways.nl>
- * Copyright 2004-2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Licensed under the GPL-2
*/
#include <linux/module.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
#include <linux/irq.h>
+#ifdef CONFIG_IPIPE
+#include <linux/ipipe.h>
+#endif
#ifdef CONFIG_KGDB
#include <linux/kgdb.h>
#endif
#include <asm/blackfin.h>
#include <asm/gpio.h>
#include <asm/irq_handler.h>
+#include <asm/dpmc.h>
+#include <asm/bfin5xx_spi.h>
+#include <asm/bfin_sport.h>
+#include <asm/bfin_can.h>
+
+#define SIC_SYSIRQ(irq) (irq - (IRQ_CORETMR + 1))
#ifdef BF537_FAMILY
# define BF537_GENERIC_ERROR_INT_DEMUX
+# define SPI_ERR_MASK (BIT_STAT_TXCOL | BIT_STAT_RBSY | BIT_STAT_MODF | BIT_STAT_TXE) /* SPI_STAT */
+# define SPORT_ERR_MASK (ROVF | RUVF | TOVF | TUVF) /* SPORT_STAT */
+# define PPI_ERR_MASK (0xFFFF & ~FLD) /* PPI_STATUS */
+# define EMAC_ERR_MASK (PHYINT | MMCINT | RXFSINT | TXFSINT | WAKEDET | RXDMAERR | TXDMAERR | STMDONE) /* EMAC_SYSTAT */
+# define UART_ERR_MASK (0x6) /* UART_IIR */
+# define CAN_ERR_MASK (EWTIF | EWRIF | EPIF | BOIF | WUIF | UIAIF | AAIF | RMLIF | UCEIF | EXTIF | ADIF) /* CAN_GIF */
#else
# undef BF537_GENERIC_ERROR_INT_DEMUX
#endif
* -
*/
+#ifndef CONFIG_SMP
/* Initialize this to an actual value to force it into the .data
* section so that we know it is properly initialized at entry into
* the kernel but before bss is initialized to zero (which is where
* it would live otherwise). The 0x1f magic represents the IRQs we
* cannot actually mask out in hardware.
*/
-unsigned long irq_flags = 0x1f;
-EXPORT_SYMBOL(irq_flags);
+unsigned long bfin_irq_flags = 0x1f;
+EXPORT_SYMBOL(bfin_irq_flags);
+#endif
/* The number of spurious interrupts */
atomic_t num_spurious;
{
unsigned ivg, irq_pos = 0;
for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) {
- int irqn;
+ int irqN;
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 &
-#if defined(CONFIG_BF52x) || defined(CONFIG_BF538) \
- || defined(CONFIG_BF539) || defined(CONFIG_BF51x)
- bfin_read32((unsigned long *)SIC_IAR0 +
- ((irqn % 32) >> 3) + ((irqn / 32) *
- ((SIC_IAR4 - SIC_IAR0) / 4))) >> iar_shift)) {
+ for (irqN = 0; irqN < NR_PERI_INTS; irqN += 4) {
+ int irqn;
+ u32 iar = bfin_read32((unsigned long *)SIC_IAR0 +
+#if defined(CONFIG_BF51x) || defined(CONFIG_BF52x) || \
+ defined(CONFIG_BF538) || defined(CONFIG_BF539)
+ ((irqN % 32) >> 3) + ((irqN / 32) * ((SIC_IAR4 - SIC_IAR0) / 4))
#else
- bfin_read32((unsigned long *)SIC_IAR0 +
- (irqn >> 3)) >> iar_shift)) {
+ (irqN >> 3)
#endif
- ivg_table[irq_pos].irqno = IVG7 + irqn;
- ivg_table[irq_pos].isrflag = 1 << (irqn % 32);
- ivg7_13[ivg].istop++;
- irq_pos++;
+ );
+
+ for (irqn = irqN; irqn < irqN + 4; ++irqn) {
+ int iar_shift = (irqn & 7) * 4;
+ if (ivg == (0xf & (iar >> iar_shift))) {
+ ivg_table[irq_pos].irqno = IVG7 + irqn;
+ ivg_table[irq_pos].isrflag = 1 << (irqn % 32);
+ ivg7_13[ivg].istop++;
+ irq_pos++;
+ }
}
}
}
static void bfin_core_mask_irq(unsigned int irq)
{
- irq_flags &= ~(1 << irq);
- if (!irqs_disabled())
- local_irq_enable();
+ bfin_irq_flags &= ~(1 << irq);
+ if (!irqs_disabled_hw())
+ local_irq_enable_hw();
}
static void bfin_core_unmask_irq(unsigned int irq)
{
- irq_flags |= 1 << irq;
+ bfin_irq_flags |= 1 << irq;
/*
* If interrupts are enabled, IMASK must contain the same value
- * as irq_flags. Make sure that invariant holds. If interrupts
+ * as bfin_irq_flags. Make sure that invariant holds. If interrupts
* are currently disabled we need not do anything; one of the
* callers will take care of setting IMASK to the proper value
* when reenabling interrupts.
- * local_irq_enable just does "STI irq_flags", so it's exactly
+ * local_irq_enable just does "STI bfin_irq_flags", so it's exactly
* what we need.
*/
- if (!irqs_disabled())
- local_irq_enable();
+ if (!irqs_disabled_hw())
+ local_irq_enable_hw();
return;
}
static void bfin_internal_mask_irq(unsigned int irq)
{
+ unsigned long flags;
+
#ifdef CONFIG_BF53x
+ local_irq_save_hw(flags);
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
~(1 << SIC_SYSIRQ(irq)));
#else
unsigned mask_bank, mask_bit;
+ local_irq_save_hw(flags);
mask_bank = SIC_SYSIRQ(irq) / 32;
mask_bit = SIC_SYSIRQ(irq) % 32;
bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) &
~(1 << mask_bit));
+#ifdef CONFIG_SMP
+ bfin_write_SICB_IMASK(mask_bank, bfin_read_SICB_IMASK(mask_bank) &
+ ~(1 << mask_bit));
+#endif
#endif
- SSYNC();
+ local_irq_restore_hw(flags);
}
+#ifdef CONFIG_SMP
+static void bfin_internal_unmask_irq_affinity(unsigned int irq,
+ const struct cpumask *affinity)
+#else
static void bfin_internal_unmask_irq(unsigned int irq)
+#endif
{
+ unsigned long flags;
+
#ifdef CONFIG_BF53x
+ local_irq_save_hw(flags);
bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() |
(1 << SIC_SYSIRQ(irq)));
#else
unsigned mask_bank, mask_bit;
+ local_irq_save_hw(flags);
mask_bank = SIC_SYSIRQ(irq) / 32;
mask_bit = SIC_SYSIRQ(irq) % 32;
- bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) |
- (1 << mask_bit));
+#ifdef CONFIG_SMP
+ if (cpumask_test_cpu(0, affinity))
+#endif
+ bfin_write_SIC_IMASK(mask_bank,
+ bfin_read_SIC_IMASK(mask_bank) |
+ (1 << mask_bit));
+#ifdef CONFIG_SMP
+ if (cpumask_test_cpu(1, affinity))
+ bfin_write_SICB_IMASK(mask_bank,
+ bfin_read_SICB_IMASK(mask_bank) |
+ (1 << mask_bit));
#endif
- SSYNC();
+#endif
+ local_irq_restore_hw(flags);
}
+#ifdef CONFIG_SMP
+static void bfin_internal_unmask_irq(unsigned int irq)
+{
+ struct irq_desc *desc = irq_to_desc(irq);
+ bfin_internal_unmask_irq_affinity(irq, desc->affinity);
+}
+
+static int bfin_internal_set_affinity(unsigned int irq, const struct cpumask *mask)
+{
+ bfin_internal_mask_irq(irq);
+ bfin_internal_unmask_irq_affinity(irq, mask);
+
+ return 0;
+}
+#endif
+
#ifdef CONFIG_PM
int bfin_internal_set_wake(unsigned int irq, unsigned int state)
{
- unsigned bank, bit, wakeup = 0;
+ u32 bank, bit, wakeup = 0;
unsigned long flags;
bank = SIC_SYSIRQ(irq) / 32;
bit = SIC_SYSIRQ(irq) % 32;
wakeup |= USBWE;
break;
#endif
-#ifdef IRQ_KEY
- case IRQ_KEY:
- wakeup |= KPADWE;
- break;
-#endif
#ifdef CONFIG_BF54x
case IRQ_CNT:
wakeup |= ROTWE;
break;
}
- local_irq_save(flags);
+ local_irq_save_hw(flags);
if (state) {
bfin_sic_iwr[bank] |= (1 << bit);
vr_wakeup &= ~wakeup;
}
- local_irq_restore(flags);
+ local_irq_restore_hw(flags);
return 0;
}
.mask_ack = bfin_internal_mask_irq,
.disable = bfin_internal_mask_irq,
.enable = bfin_internal_unmask_irq,
+#ifdef CONFIG_SMP
+ .set_affinity = bfin_internal_set_affinity,
+#endif
#ifdef CONFIG_PM
.set_wake = bfin_internal_set_wake,
#endif
};
+static void bfin_handle_irq(unsigned irq)
+{
+#ifdef CONFIG_IPIPE
+ struct pt_regs regs; /* Contents not used. */
+ ipipe_trace_irq_entry(irq);
+ __ipipe_handle_irq(irq, ®s);
+ ipipe_trace_irq_exit(irq);
+#else /* !CONFIG_IPIPE */
+ struct irq_desc *desc = irq_desc + irq;
+ desc->handle_irq(irq, desc);
+#endif /* !CONFIG_IPIPE */
+}
+
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
static int error_int_mask;
static void bfin_generic_error_mask_irq(unsigned int irq)
{
error_int_mask &= ~(1L << (irq - IRQ_PPI_ERROR));
-
if (!error_int_mask)
bfin_internal_mask_irq(IRQ_GENERIC_ERROR);
}
{
int irq = 0;
- SSYNC();
-
#if (defined(CONFIG_BF537) || defined(CONFIG_BF536))
if (bfin_read_EMAC_SYSTAT() & EMAC_ERR_MASK)
irq = IRQ_MAC_ERROR;
irq = IRQ_CAN_ERROR;
else if (bfin_read_SPI_STAT() & SPI_ERR_MASK)
irq = IRQ_SPI_ERROR;
- else if ((bfin_read_UART0_IIR() & UART_ERR_MASK_STAT1) &&
- (bfin_read_UART0_IIR() & UART_ERR_MASK_STAT0))
+ else if ((bfin_read_UART0_IIR() & UART_ERR_MASK) == UART_ERR_MASK)
irq = IRQ_UART0_ERROR;
- else if ((bfin_read_UART1_IIR() & UART_ERR_MASK_STAT1) &&
- (bfin_read_UART1_IIR() & UART_ERR_MASK_STAT0))
+ else if ((bfin_read_UART1_IIR() & UART_ERR_MASK) == UART_ERR_MASK)
irq = IRQ_UART1_ERROR;
if (irq) {
- if (error_int_mask & (1L << (irq - IRQ_PPI_ERROR))) {
- struct irq_desc *desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
- } else {
+ if (error_int_mask & (1L << (irq - IRQ_PPI_ERROR)))
+ bfin_handle_irq(irq);
+ else {
switch (irq) {
case IRQ_PPI_ERROR:
}
#endif /* BF537_GENERIC_ERROR_INT_DEMUX */
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+static int mac_stat_int_mask;
+
+static void bfin_mac_status_ack_irq(unsigned int irq)
+{
+ switch (irq) {
+ case IRQ_MAC_MMCINT:
+ bfin_write_EMAC_MMC_TIRQS(
+ bfin_read_EMAC_MMC_TIRQE() &
+ bfin_read_EMAC_MMC_TIRQS());
+ bfin_write_EMAC_MMC_RIRQS(
+ bfin_read_EMAC_MMC_RIRQE() &
+ bfin_read_EMAC_MMC_RIRQS());
+ break;
+ case IRQ_MAC_RXFSINT:
+ bfin_write_EMAC_RX_STKY(
+ bfin_read_EMAC_RX_IRQE() &
+ bfin_read_EMAC_RX_STKY());
+ break;
+ case IRQ_MAC_TXFSINT:
+ bfin_write_EMAC_TX_STKY(
+ bfin_read_EMAC_TX_IRQE() &
+ bfin_read_EMAC_TX_STKY());
+ break;
+ case IRQ_MAC_WAKEDET:
+ bfin_write_EMAC_WKUP_CTL(
+ bfin_read_EMAC_WKUP_CTL() | MPKS | RWKS);
+ break;
+ default:
+ /* These bits are W1C */
+ bfin_write_EMAC_SYSTAT(1L << (irq - IRQ_MAC_PHYINT));
+ break;
+ }
+}
+
+static void bfin_mac_status_mask_irq(unsigned int irq)
+{
+ mac_stat_int_mask &= ~(1L << (irq - IRQ_MAC_PHYINT));
+#ifdef BF537_GENERIC_ERROR_INT_DEMUX
+ switch (irq) {
+ case IRQ_MAC_PHYINT:
+ bfin_write_EMAC_SYSCTL(bfin_read_EMAC_SYSCTL() & ~PHYIE);
+ break;
+ default:
+ break;
+ }
+#else
+ if (!mac_stat_int_mask)
+ bfin_internal_mask_irq(IRQ_MAC_ERROR);
+#endif
+ bfin_mac_status_ack_irq(irq);
+}
+
+static void bfin_mac_status_unmask_irq(unsigned int irq)
+{
+#ifdef BF537_GENERIC_ERROR_INT_DEMUX
+ switch (irq) {
+ case IRQ_MAC_PHYINT:
+ bfin_write_EMAC_SYSCTL(bfin_read_EMAC_SYSCTL() | PHYIE);
+ break;
+ default:
+ break;
+ }
+#else
+ if (!mac_stat_int_mask)
+ bfin_internal_unmask_irq(IRQ_MAC_ERROR);
+#endif
+ mac_stat_int_mask |= 1L << (irq - IRQ_MAC_PHYINT);
+}
+
+#ifdef CONFIG_PM
+int bfin_mac_status_set_wake(unsigned int irq, unsigned int state)
+{
+#ifdef BF537_GENERIC_ERROR_INT_DEMUX
+ return bfin_internal_set_wake(IRQ_GENERIC_ERROR, state);
+#else
+ return bfin_internal_set_wake(IRQ_MAC_ERROR, state);
+#endif
+}
+#endif
+
+static struct irq_chip bfin_mac_status_irqchip = {
+ .name = "MACST",
+ .ack = bfin_ack_noop,
+ .mask_ack = bfin_mac_status_mask_irq,
+ .mask = bfin_mac_status_mask_irq,
+ .unmask = bfin_mac_status_unmask_irq,
+#ifdef CONFIG_PM
+ .set_wake = bfin_mac_status_set_wake,
+#endif
+};
+
+static void bfin_demux_mac_status_irq(unsigned int int_err_irq,
+ struct irq_desc *inta_desc)
+{
+ int i, irq = 0;
+ u32 status = bfin_read_EMAC_SYSTAT();
+
+ for (i = 0; i < (IRQ_MAC_STMDONE - IRQ_MAC_PHYINT); i++)
+ if (status & (1L << i)) {
+ irq = IRQ_MAC_PHYINT + i;
+ break;
+ }
+
+ if (irq) {
+ if (mac_stat_int_mask & (1L << (irq - IRQ_MAC_PHYINT))) {
+ bfin_handle_irq(irq);
+ } else {
+ bfin_mac_status_ack_irq(irq);
+ pr_debug("IRQ %d:"
+ " MASKED MAC ERROR INTERRUPT ASSERTED\n",
+ irq);
+ }
+ } else
+ printk(KERN_ERR
+ "%s : %s : LINE %d :\nIRQ ?: MAC ERROR"
+ " INTERRUPT ASSERTED BUT NO SOURCE FOUND\n",
+ __func__, __FILE__, __LINE__);
+}
+#endif
+
static inline void bfin_set_irq_handler(unsigned irq, irq_flow_handler_t handle)
{
+#ifdef CONFIG_IPIPE
+ _set_irq_handler(irq, handle_level_irq);
+#else
struct irq_desc *desc = irq_desc + irq;
/* May not call generic set_irq_handler() due to spinlock
recursion. */
desc->handle_irq = handle;
+#endif
}
-#if !defined(CONFIG_BF54x)
-
-static unsigned short gpio_enabled[GPIO_BANK_NUM];
-static unsigned short gpio_edge_triggered[GPIO_BANK_NUM];
-
+static DECLARE_BITMAP(gpio_enabled, MAX_BLACKFIN_GPIOS);
extern void bfin_gpio_irq_prepare(unsigned gpio);
+#if !defined(CONFIG_BF54x)
+
static void bfin_gpio_ack_irq(unsigned int irq)
{
- u16 gpionr = irq - IRQ_PF0;
-
- if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
- set_gpio_data(gpionr, 0);
- SSYNC();
- }
+ /* AFAIK ack_irq in case mask_ack is provided
+ * get's only called for edge sense irqs
+ */
+ set_gpio_data(irq_to_gpio(irq), 0);
}
static void bfin_gpio_mask_ack_irq(unsigned int irq)
{
- u16 gpionr = irq - IRQ_PF0;
+ struct irq_desc *desc = irq_desc + irq;
+ u32 gpionr = irq_to_gpio(irq);
- if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
+ if (desc->handle_irq == handle_edge_irq)
set_gpio_data(gpionr, 0);
- SSYNC();
- }
set_gpio_maska(gpionr, 0);
- SSYNC();
}
static void bfin_gpio_mask_irq(unsigned int irq)
{
- set_gpio_maska(irq - IRQ_PF0, 0);
- SSYNC();
+ set_gpio_maska(irq_to_gpio(irq), 0);
}
static void bfin_gpio_unmask_irq(unsigned int irq)
{
- set_gpio_maska(irq - IRQ_PF0, 1);
- SSYNC();
+ set_gpio_maska(irq_to_gpio(irq), 1);
}
static unsigned int bfin_gpio_irq_startup(unsigned int irq)
{
- u16 gpionr = irq - IRQ_PF0;
+ u32 gpionr = irq_to_gpio(irq);
- if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr)))
+ if (__test_and_set_bit(gpionr, gpio_enabled))
bfin_gpio_irq_prepare(gpionr);
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
bfin_gpio_unmask_irq(irq);
return 0;
static void bfin_gpio_irq_shutdown(unsigned int irq)
{
+ u32 gpionr = irq_to_gpio(irq);
+
bfin_gpio_mask_irq(irq);
- gpio_enabled[gpio_bank(irq - IRQ_PF0)] &= ~gpio_bit(irq - IRQ_PF0);
+ __clear_bit(gpionr, gpio_enabled);
+ bfin_gpio_irq_free(gpionr);
}
static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
{
- u16 gpionr = irq - IRQ_PF0;
+ int ret;
+ char buf[16];
+ u32 gpionr = irq_to_gpio(irq);
if (type == IRQ_TYPE_PROBE) {
/* only probe unenabled GPIO interrupt lines */
- if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))
+ if (test_bit(gpionr, gpio_enabled))
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)))
+
+ snprintf(buf, 16, "gpio-irq%d", irq);
+ ret = bfin_gpio_irq_request(gpionr, buf);
+ if (ret)
+ return ret;
+
+ if (__test_and_set_bit(gpionr, gpio_enabled))
bfin_gpio_irq_prepare(gpionr);
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
} else {
- gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
+ __clear_bit(gpionr, gpio_enabled);
return 0;
}
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
set_gpio_edge(gpionr, 1);
set_gpio_inen(gpionr, 1);
- gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr);
set_gpio_data(gpionr, 0);
} else {
set_gpio_edge(gpionr, 0);
- gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
set_gpio_inen(gpionr, 1);
}
- SSYNC();
-
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
bfin_set_irq_handler(irq, handle_edge_irq);
else
#ifdef CONFIG_PM
int bfin_gpio_set_wake(unsigned int irq, unsigned int state)
{
- unsigned gpio = irq_to_gpio(irq);
-
- if (state)
- gpio_pm_wakeup_request(gpio, PM_WAKE_IGNORE);
- else
- gpio_pm_wakeup_free(gpio);
-
- return 0;
+ return gpio_pm_wakeup_ctrl(irq_to_gpio(irq), state);
}
#endif
-static struct irq_chip bfin_gpio_irqchip = {
- .name = "GPIO",
- .ack = bfin_gpio_ack_irq,
- .mask = bfin_gpio_mask_irq,
- .mask_ack = bfin_gpio_mask_ack_irq,
- .unmask = bfin_gpio_unmask_irq,
- .disable = bfin_gpio_mask_irq,
- .enable = bfin_gpio_unmask_irq,
- .set_type = bfin_gpio_irq_type,
- .startup = bfin_gpio_irq_startup,
- .shutdown = bfin_gpio_irq_shutdown,
-#ifdef CONFIG_PM
- .set_wake = bfin_gpio_set_wake,
-#endif
-};
-
static void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
{
for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) {
irq += i;
- mask = get_gpiop_data(i) &
- (gpio_enabled[gpio_bank(i)] &
- get_gpiop_maska(i));
+ mask = get_gpiop_data(i) & get_gpiop_maska(i);
while (mask) {
- if (mask & 1) {
- desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
- }
+ if (mask & 1)
+ bfin_handle_irq(irq);
irq++;
mask >>= 1;
}
}
} else {
gpio = irq_to_gpio(irq);
- mask = get_gpiop_data(gpio) &
- (gpio_enabled[gpio_bank(gpio)] &
- get_gpiop_maska(gpio));
+ mask = get_gpiop_data(gpio) & get_gpiop_maska(gpio);
do {
- if (mask & 1) {
- desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
- }
+ if (mask & 1)
+ bfin_handle_irq(irq);
irq++;
mask >>= 1;
} while (mask);
static unsigned char irq2pint_lut[NR_PINTS];
static unsigned char pint2irq_lut[NR_PINT_SYS_IRQS * NR_PINT_BITS];
-static unsigned int gpio_both_edge_triggered[NR_PINT_SYS_IRQS];
-static unsigned short gpio_enabled[GPIO_BANK_NUM];
-
-
struct pin_int_t {
unsigned int mask_set;
unsigned int mask_clear;
(struct pin_int_t *)PINT3_MASK_SET,
};
-extern void bfin_gpio_irq_prepare(unsigned gpio);
-
-inline unsigned short get_irq_base(u8 bank, u8 bmap)
+inline unsigned int get_irq_base(u32 bank, u8 bmap)
{
-
- u16 irq_base;
+ unsigned int irq_base;
if (bank < 2) { /*PA-PB */
irq_base = IRQ_PA0 + bmap * 16;
}
return irq_base;
-
}
/* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
pint2irq_lut[bit_pos] = irq_base - SYS_IRQS;
irq2pint_lut[irq_base - SYS_IRQS] = bit_pos;
-
}
-
}
-
}
static void bfin_gpio_ack_irq(unsigned int irq)
{
- u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ struct irq_desc *desc = irq_desc + irq;
+ u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
u32 pintbit = PINT_BIT(pint_val);
- u8 bank = PINT_2_BANK(pint_val);
+ u32 bank = PINT_2_BANK(pint_val);
- if (unlikely(gpio_both_edge_triggered[bank] & pintbit)) {
+ if ((desc->status & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH) {
if (pint[bank]->invert_set & pintbit)
pint[bank]->invert_clear = pintbit;
else
}
pint[bank]->request = pintbit;
- SSYNC();
}
static void bfin_gpio_mask_ack_irq(unsigned int irq)
{
- u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ struct irq_desc *desc = irq_desc + irq;
+ u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
u32 pintbit = PINT_BIT(pint_val);
- u8 bank = PINT_2_BANK(pint_val);
+ u32 bank = PINT_2_BANK(pint_val);
- if (unlikely(gpio_both_edge_triggered[bank] & pintbit)) {
+ if ((desc->status & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH) {
if (pint[bank]->invert_set & pintbit)
pint[bank]->invert_clear = pintbit;
else
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];
+ u32 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 pint_val = irq2pint_lut[irq - SYS_IRQS];
u32 pintbit = PINT_BIT(pint_val);
- u8 bank = PINT_2_BANK(pint_val);
+ u32 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)
{
- u16 gpionr = irq_to_gpio(irq);
- u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ u32 gpionr = irq_to_gpio(irq);
+ u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
if (pint_val == IRQ_NOT_AVAIL) {
printk(KERN_ERR
return -ENODEV;
}
- if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr)))
+ if (__test_and_set_bit(gpionr, gpio_enabled))
bfin_gpio_irq_prepare(gpionr);
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
bfin_gpio_unmask_irq(irq);
return 0;
static void bfin_gpio_irq_shutdown(unsigned int irq)
{
- u16 gpionr = irq_to_gpio(irq);
+ u32 gpionr = irq_to_gpio(irq);
bfin_gpio_mask_irq(irq);
- gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
+ __clear_bit(gpionr, gpio_enabled);
+ bfin_gpio_irq_free(gpionr);
}
static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
{
-
- u16 gpionr = irq_to_gpio(irq);
- u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ int ret;
+ char buf[16];
+ u32 gpionr = irq_to_gpio(irq);
+ u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
u32 pintbit = PINT_BIT(pint_val);
- u8 bank = PINT_2_BANK(pint_val);
+ u32 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))
+ if (test_bit(gpionr, gpio_enabled))
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)))
+
+ snprintf(buf, 16, "gpio-irq%d", irq);
+ ret = bfin_gpio_irq_request(gpionr, buf);
+ if (ret)
+ return ret;
+
+ if (__test_and_set_bit(gpionr, gpio_enabled))
bfin_gpio_irq_prepare(gpionr);
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
} else {
- gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
+ __clear_bit(gpionr, gpio_enabled);
return 0;
}
if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
== (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
-
- gpio_both_edge_triggered[bank] |= pintbit;
-
if (gpio_get_value(gpionr))
pint[bank]->invert_set = pintbit;
else
pint[bank]->invert_clear = pintbit;
- } else {
- gpio_both_edge_triggered[bank] &= ~pintbit;
}
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
bfin_set_irq_handler(irq, handle_level_irq);
}
- SSYNC();
-
return 0;
}
int bfin_gpio_set_wake(unsigned int irq, unsigned int state)
{
u32 pint_irq;
- u8 pint_val = irq2pint_lut[irq - SYS_IRQS];
+ u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
u32 bank = PINT_2_BANK(pint_val);
u32 pintbit = PINT_BIT(pint_val);
}
#endif
-static struct irq_chip bfin_gpio_irqchip = {
- .name = "GPIO",
- .ack = bfin_gpio_ack_irq,
- .mask = bfin_gpio_mask_irq,
- .mask_ack = bfin_gpio_mask_ack_irq,
- .unmask = bfin_gpio_unmask_irq,
- .disable = bfin_gpio_mask_irq,
- .enable = bfin_gpio_unmask_irq,
- .set_type = bfin_gpio_irq_type,
- .startup = bfin_gpio_irq_startup,
- .shutdown = bfin_gpio_irq_shutdown,
-#ifdef CONFIG_PM
- .set_wake = bfin_gpio_set_wake,
-#endif
-};
-
static void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
{
- u8 bank, pint_val;
+ u32 bank, pint_val;
u32 request, irq;
switch (inta_irq) {
while (request) {
if (request & 1) {
irq = pint2irq_lut[pint_val] + SYS_IRQS;
- desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
+ bfin_handle_irq(irq);
}
pint_val++;
request >>= 1;
}
#endif
-void __init init_exception_vectors(void)
-{
- SSYNC();
+static struct irq_chip bfin_gpio_irqchip = {
+ .name = "GPIO",
+ .ack = bfin_gpio_ack_irq,
+ .mask = bfin_gpio_mask_irq,
+ .mask_ack = bfin_gpio_mask_ack_irq,
+ .unmask = bfin_gpio_unmask_irq,
+ .disable = bfin_gpio_mask_irq,
+ .enable = bfin_gpio_unmask_irq,
+ .set_type = bfin_gpio_irq_type,
+ .startup = bfin_gpio_irq_startup,
+ .shutdown = bfin_gpio_irq_shutdown,
+#ifdef CONFIG_PM
+ .set_wake = bfin_gpio_set_wake,
+#endif
+};
+void __cpuinit init_exception_vectors(void)
+{
/* cannot program in software:
* evt0 - emulation (jtag)
* evt1 - reset
bfin_write_EVT11(evt_evt11);
bfin_write_EVT12(evt_evt12);
bfin_write_EVT13(evt_evt13);
- bfin_write_EVT14(evt14_softirq);
+ bfin_write_EVT14(evt_evt14);
bfin_write_EVT15(evt_system_call);
CSYNC();
}
* This function should be called during kernel startup to initialize
* the BFin IRQ handling routines.
*/
+
int __init init_arch_irq(void)
{
int irq;
# ifdef CONFIG_BF54x
bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
# endif
+# ifdef CONFIG_SMP
+ bfin_write_SICB_IMASK0(SIC_UNMASK_ALL);
+ bfin_write_SICB_IMASK1(SIC_UNMASK_ALL);
+# endif
#else
bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
#endif
#elif defined(CONFIG_BF538) || defined(CONFIG_BF539)
case IRQ_PORTF_INTA:
#endif
-
set_irq_chained_handler(irq,
bfin_demux_gpio_irq);
break;
#ifdef BF537_GENERIC_ERROR_INT_DEMUX
case IRQ_GENERIC_ERROR:
- set_irq_handler(irq, bfin_demux_error_irq);
+ set_irq_chained_handler(irq, bfin_demux_error_irq);
+ break;
+#endif
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+ case IRQ_MAC_ERROR:
+ set_irq_chained_handler(irq, bfin_demux_mac_status_irq);
+ break;
+#endif
+#ifdef CONFIG_SMP
+ case IRQ_SUPPLE_0:
+ case IRQ_SUPPLE_1:
+ set_irq_handler(irq, handle_percpu_irq);
+ break;
+#endif
+
+#ifdef CONFIG_TICKSOURCE_CORETMR
+ case IRQ_CORETMR:
+# ifdef CONFIG_SMP
+ set_irq_handler(irq, handle_percpu_irq);
+ break;
+# else
+ set_irq_handler(irq, handle_simple_irq);
+ break;
+# endif
+#endif
+#ifdef CONFIG_TICKSOURCE_GPTMR0
+ case IRQ_TIMER0:
+ set_irq_handler(irq, handle_simple_irq);
break;
#endif
+
+#ifdef CONFIG_IPIPE
+ default:
+ set_irq_handler(irq, handle_level_irq);
+ break;
+#else /* !CONFIG_IPIPE */
default:
set_irq_handler(irq, handle_simple_irq);
break;
+#endif /* !CONFIG_IPIPE */
}
}
for (irq = IRQ_PPI_ERROR; irq <= IRQ_UART1_ERROR; irq++)
set_irq_chip_and_handler(irq, &bfin_generic_error_irqchip,
handle_level_irq);
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+ set_irq_chained_handler(IRQ_MAC_ERROR, bfin_demux_mac_status_irq);
+#endif
#endif
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+ for (irq = IRQ_MAC_PHYINT; irq <= IRQ_MAC_STMDONE; irq++)
+ set_irq_chip_and_handler(irq, &bfin_mac_status_irqchip,
+ handle_level_irq);
+#endif
/* if configured as edge, then will be changed to do_edge_IRQ */
- for (irq = GPIO_IRQ_BASE; irq < NR_IRQS; irq++)
+ for (irq = GPIO_IRQ_BASE;
+ irq < (GPIO_IRQ_BASE + MAX_BLACKFIN_GPIOS); irq++)
set_irq_chip_and_handler(irq, &bfin_gpio_irqchip,
handle_level_irq);
-
bfin_write_IMASK(0);
CSYNC();
ilat = bfin_read_ILAT();
CSYNC();
printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n");
- /* IMASK=xxx is equivalent to STI xx or irq_flags=xx,
+ /* IMASK=xxx is equivalent to STI xx or bfin_irq_flags=xx,
* local_irq_enable()
*/
program_IAR();
search_IAR();
/* Enable interrupts IVG7-15 */
- irq_flags = irq_flags | IMASK_IVG15 |
+ bfin_irq_flags |= IMASK_IVG15 |
IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \
- || defined(BF538_FAMILY) || defined(CONFIG_BF51x)
+ /* This implicitly covers ANOMALY_05000171
+ * Boot-ROM code modifies SICA_IWRx wakeup registers
+ */
+#ifdef SIC_IWR0
bfin_write_SIC_IWR0(IWR_DISABLE_ALL);
-#if defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
+# ifdef SIC_IWR1
/* BF52x/BF51x system reset does not properly reset SIC_IWR1 which
* will screw up the bootrom as it relies on MDMA0/1 waking it
* up from IDLE instructions. See this report for more info:
* http://blackfin.uclinux.org/gf/tracker/4323
*/
- bfin_write_SIC_IWR1(IWR_ENABLE(10) | IWR_ENABLE(11));
-#else
- bfin_write_SIC_IWR1(IWR_DISABLE_ALL);
-#endif
-# ifdef CONFIG_BF54x
+ if (ANOMALY_05000435)
+ bfin_write_SIC_IWR1(IWR_ENABLE(10) | IWR_ENABLE(11));
+ else
+ bfin_write_SIC_IWR1(IWR_DISABLE_ALL);
+# endif
+# ifdef SIC_IWR2
bfin_write_SIC_IWR2(IWR_DISABLE_ALL);
# endif
#else
} else {
struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \
- || defined(BF538_FAMILY) || defined(CONFIG_BF51x)
+#if defined(SIC_ISR0) || defined(SICA_ISR0)
unsigned long sic_status[3];
- sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0();
- sic_status[1] = bfin_read_SIC_ISR1() & bfin_read_SIC_IMASK1();
-#ifdef CONFIG_BF54x
+ if (smp_processor_id()) {
+# ifdef SICB_ISR0
+ /* This will be optimized out in UP mode. */
+ sic_status[0] = bfin_read_SICB_ISR0() & bfin_read_SICB_IMASK0();
+ sic_status[1] = bfin_read_SICB_ISR1() & bfin_read_SICB_IMASK1();
+# endif
+ } else {
+ sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0();
+ sic_status[1] = bfin_read_SIC_ISR1() & bfin_read_SIC_IMASK1();
+ }
+# ifdef SIC_ISR2
sic_status[2] = bfin_read_SIC_ISR2() & bfin_read_SIC_IMASK2();
-#endif
+# endif
for (;; ivg++) {
if (ivg >= ivg_stop) {
atomic_inc(&num_spurious);
}
asm_do_IRQ(vec, fp);
}
+
+#ifdef CONFIG_IPIPE
+
+int __ipipe_get_irq_priority(unsigned irq)
+{
+ int ient, prio;
+
+ if (irq <= IRQ_CORETMR)
+ return irq;
+
+ for (ient = 0; ient < NR_PERI_INTS; ient++) {
+ struct ivgx *ivg = ivg_table + ient;
+ if (ivg->irqno == irq) {
+ for (prio = 0; prio <= IVG13-IVG7; prio++) {
+ if (ivg7_13[prio].ifirst <= ivg &&
+ ivg7_13[prio].istop > ivg)
+ return IVG7 + prio;
+ }
+ }
+ }
+
+ return IVG15;
+}
+
+/* Hw interrupts are disabled on entry (check SAVE_CONTEXT). */
+#ifdef CONFIG_DO_IRQ_L1
+__attribute__((l1_text))
+#endif
+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;
+
+ if (likely(vec == EVT_IVTMR_P))
+ irq = IRQ_CORETMR;
+ else {
+#if defined(SIC_ISR0) || defined(SICA_ISR0)
+ unsigned long sic_status[3];
+
+ sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0();
+ sic_status[1] = bfin_read_SIC_ISR1() & bfin_read_SIC_IMASK1();
+# ifdef SIC_ISR2
+ sic_status[2] = bfin_read_SIC_ISR2() & bfin_read_SIC_IMASK2();
+# endif
+ for (;; ivg++) {
+ if (ivg >= ivg_stop) {
+ atomic_inc(&num_spurious);
+ return 0;
+ }
+ if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag)
+ break;
+ }
+#else
+ unsigned long sic_status;
+
+ sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
+
+ for (;; ivg++) {
+ if (ivg >= ivg_stop) {
+ atomic_inc(&num_spurious);
+ return 0;
+ } else if (sic_status & ivg->isrflag)
+ break;
+ }
+#endif
+ irq = ivg->irqno;
+ }
+
+ if (irq == IRQ_SYSTMR) {
+#if !defined(CONFIG_GENERIC_CLOCKEVENTS) || defined(CONFIG_TICKSOURCE_GPTMR0)
+ bfin_write_TIMER_STATUS(1); /* Latch TIMIL0 */
+#endif
+ /* This is basically what we need from the register frame. */
+ __raw_get_cpu_var(__ipipe_tick_regs).ipend = regs->ipend;
+ __raw_get_cpu_var(__ipipe_tick_regs).pc = regs->pc;
+ if (this_domain != ipipe_root_domain)
+ __raw_get_cpu_var(__ipipe_tick_regs).ipend &= ~0x10;
+ else
+ __raw_get_cpu_var(__ipipe_tick_regs).ipend |= 0x10;
+ }
+
+ if (this_domain == ipipe_root_domain) {
+ s = __test_and_set_bit(IPIPE_SYNCDEFER_FLAG, &p->status);
+ barrier();
+ }
+
+ ipipe_trace_irq_entry(irq);
+ __ipipe_handle_irq(irq, regs);
+ ipipe_trace_irq_exit(irq);
+
+ if (this_domain == ipipe_root_domain) {
+ set_thread_flag(TIF_IRQ_SYNC);
+ if (!s) {
+ __clear_bit(IPIPE_SYNCDEFER_FLAG, &p->status);
+ return !test_bit(IPIPE_STALL_FLAG, &p->status);
+ }
+ }
+
+ return 0;
+}
+
+#endif /* CONFIG_IPIPE */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff