summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/mach-common/ints-priority.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/mach-common/ints-priority.c')
-rw-r--r--arch/blackfin/mach-common/ints-priority.c1366
1 files changed, 0 insertions, 1366 deletions
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
deleted file mode 100644
index e81a5b7dabdc..000000000000
--- a/arch/blackfin/mach-common/ints-priority.c
+++ /dev/null
@@ -1,1366 +0,0 @@
-/*
- * 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
- *
- * Licensed under the GPL-2
- */
-
-#include <linux/module.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-#include <linux/irq.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/syscore_ops.h>
-#include <asm/delay.h>
-#ifdef CONFIG_IPIPE
-#include <linux/ipipe.h>
-#endif
-#include <asm/traps.h>
-#include <asm/blackfin.h>
-#include <asm/irq_handler.h>
-#include <asm/dpmc.h>
-#include <asm/traps.h>
-#include <asm/gpio.h>
-
-/*
- * NOTES:
- * - we have separated the physical Hardware interrupt from the
- * levels that the LINUX kernel sees (see the description in irq.h)
- * -
- */
-
-#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 bfin_irq_flags = 0x1f;
-EXPORT_SYMBOL(bfin_irq_flags);
-#endif
-
-#ifdef CONFIG_PM
-unsigned long bfin_sic_iwr[3]; /* Up to 3 SIC_IWRx registers */
-unsigned vr_wakeup;
-#endif
-
-#ifndef SEC_GCTL
-static struct ivgx {
- /* irq number for request_irq, available in mach-bf5xx/irq.h */
- unsigned int irqno;
- /* corresponding bit in the SIC_ISR register */
- unsigned int isrflag;
-} ivg_table[NR_PERI_INTS];
-
-static struct ivg_slice {
- /* position of first irq in ivg_table for given ivg */
- struct ivgx *ifirst;
- struct ivgx *istop;
-} ivg7_13[IVG13 - IVG7 + 1];
-
-
-/*
- * Search SIC_IAR and fill tables with the irqvalues
- * and their positions in the SIC_ISR register.
- */
-static void __init search_IAR(void)
-{
- unsigned ivg, irq_pos = 0;
- for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) {
- int irqN;
-
- ivg7_13[ivg].istop = ivg7_13[ivg].ifirst = &ivg_table[irq_pos];
-
- 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
- (irqN >> 3)
-#endif
- );
- 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++;
- }
- }
- }
- }
-}
-#endif
-
-/*
- * This is for core internal IRQs
- */
-void bfin_ack_noop(struct irq_data *d)
-{
- /* Dummy function. */
-}
-
-static void bfin_core_mask_irq(struct irq_data *d)
-{
- bfin_irq_flags &= ~(1 << d->irq);
- if (!hard_irqs_disabled())
- hard_local_irq_enable();
-}
-
-static void bfin_core_unmask_irq(struct irq_data *d)
-{
- bfin_irq_flags |= 1 << d->irq;
- /*
- * If interrupts are enabled, IMASK must contain the same value
- * 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 bfin_irq_flags", so it's exactly
- * what we need.
- */
- if (!hard_irqs_disabled())
- hard_local_irq_enable();
- return;
-}
-
-#ifndef SEC_GCTL
-void bfin_internal_mask_irq(unsigned int irq)
-{
- unsigned long flags = hard_local_irq_save();
-#ifdef SIC_IMASK0
- unsigned mask_bank = BFIN_SYSIRQ(irq) / 32;
- unsigned mask_bit = BFIN_SYSIRQ(irq) % 32;
- bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) &
- ~(1 << mask_bit));
-# if defined(CONFIG_SMP) || defined(CONFIG_ICC)
- bfin_write_SICB_IMASK(mask_bank, bfin_read_SICB_IMASK(mask_bank) &
- ~(1 << mask_bit));
-# endif
-#else
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
- ~(1 << BFIN_SYSIRQ(irq)));
-#endif /* end of SIC_IMASK0 */
- hard_local_irq_restore(flags);
-}
-
-static void bfin_internal_mask_irq_chip(struct irq_data *d)
-{
- bfin_internal_mask_irq(d->irq);
-}
-
-#ifdef CONFIG_SMP
-void bfin_internal_unmask_irq_affinity(unsigned int irq,
- const struct cpumask *affinity)
-#else
-void bfin_internal_unmask_irq(unsigned int irq)
-#endif
-{
- unsigned long flags = hard_local_irq_save();
-
-#ifdef SIC_IMASK0
- unsigned mask_bank = BFIN_SYSIRQ(irq) / 32;
- unsigned mask_bit = BFIN_SYSIRQ(irq) % 32;
-# 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
-#else
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() |
- (1 << BFIN_SYSIRQ(irq)));
-#endif
- hard_local_irq_restore(flags);
-}
-
-#ifdef CONFIG_SMP
-static void bfin_internal_unmask_irq_chip(struct irq_data *d)
-{
- bfin_internal_unmask_irq_affinity(d->irq,
- irq_data_get_affinity_mask(d));
-}
-
-static int bfin_internal_set_affinity(struct irq_data *d,
- const struct cpumask *mask, bool force)
-{
- bfin_internal_mask_irq(d->irq);
- bfin_internal_unmask_irq_affinity(d->irq, mask);
-
- return 0;
-}
-#else
-static void bfin_internal_unmask_irq_chip(struct irq_data *d)
-{
- bfin_internal_unmask_irq(d->irq);
-}
-#endif
-
-#if defined(CONFIG_PM)
-int bfin_internal_set_wake(unsigned int irq, unsigned int state)
-{
- u32 bank, bit, wakeup = 0;
- unsigned long flags;
- bank = BFIN_SYSIRQ(irq) / 32;
- bit = BFIN_SYSIRQ(irq) % 32;
-
- switch (irq) {
-#ifdef IRQ_RTC
- case IRQ_RTC:
- wakeup |= WAKE;
- break;
-#endif
-#ifdef IRQ_CAN0_RX
- case IRQ_CAN0_RX:
- wakeup |= CANWE;
- break;
-#endif
-#ifdef IRQ_CAN1_RX
- case IRQ_CAN1_RX:
- wakeup |= CANWE;
- break;
-#endif
-#ifdef IRQ_USB_INT0
- case IRQ_USB_INT0:
- wakeup |= USBWE;
- break;
-#endif
-#ifdef CONFIG_BF54x
- case IRQ_CNT:
- wakeup |= ROTWE;
- break;
-#endif
- default:
- break;
- }
-
- flags = hard_local_irq_save();
-
- if (state) {
- bfin_sic_iwr[bank] |= (1 << bit);
- vr_wakeup |= wakeup;
-
- } else {
- bfin_sic_iwr[bank] &= ~(1 << bit);
- vr_wakeup &= ~wakeup;
- }
-
- hard_local_irq_restore(flags);
-
- return 0;
-}
-
-static int bfin_internal_set_wake_chip(struct irq_data *d, unsigned int state)
-{
- return bfin_internal_set_wake(d->irq, state);
-}
-#else
-inline int bfin_internal_set_wake(unsigned int irq, unsigned int state)
-{
- return 0;
-}
-# define bfin_internal_set_wake_chip NULL
-#endif
-
-#else /* SEC_GCTL */
-static void bfin_sec_preflow_handler(struct irq_data *d)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(d->irq);
-
- bfin_write_SEC_SCI(0, SEC_CSID, sid);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_mask_ack_irq(struct irq_data *d)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(d->irq);
-
- bfin_write_SEC_SCI(0, SEC_CSID, sid);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_unmask_irq(struct irq_data *d)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(d->irq);
-
- bfin_write32(SEC_END, sid);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_enable_ssi(unsigned int sid)
-{
- unsigned long flags = hard_local_irq_save();
- uint32_t reg_sctl = bfin_read_SEC_SCTL(sid);
-
- reg_sctl |= SEC_SCTL_SRC_EN;
- bfin_write_SEC_SCTL(sid, reg_sctl);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_disable_ssi(unsigned int sid)
-{
- unsigned long flags = hard_local_irq_save();
- uint32_t reg_sctl = bfin_read_SEC_SCTL(sid);
-
- reg_sctl &= ((uint32_t)~SEC_SCTL_SRC_EN);
- bfin_write_SEC_SCTL(sid, reg_sctl);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_set_ssi_coreid(unsigned int sid, unsigned int coreid)
-{
- unsigned long flags = hard_local_irq_save();
- uint32_t reg_sctl = bfin_read_SEC_SCTL(sid);
-
- reg_sctl &= ((uint32_t)~SEC_SCTL_CTG);
- bfin_write_SEC_SCTL(sid, reg_sctl | ((coreid << 20) & SEC_SCTL_CTG));
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_enable_sci(unsigned int sid)
-{
- unsigned long flags = hard_local_irq_save();
- uint32_t reg_sctl = bfin_read_SEC_SCTL(sid);
-
- if (sid == BFIN_SYSIRQ(IRQ_WATCH0))
- reg_sctl |= SEC_SCTL_FAULT_EN;
- else
- reg_sctl |= SEC_SCTL_INT_EN;
- bfin_write_SEC_SCTL(sid, reg_sctl);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_disable_sci(unsigned int sid)
-{
- unsigned long flags = hard_local_irq_save();
- uint32_t reg_sctl = bfin_read_SEC_SCTL(sid);
-
- reg_sctl &= ((uint32_t)~SEC_SCTL_INT_EN);
- bfin_write_SEC_SCTL(sid, reg_sctl);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_enable(struct irq_data *d)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(d->irq);
-
- bfin_sec_enable_sci(sid);
- bfin_sec_enable_ssi(sid);
-
- hard_local_irq_restore(flags);
-}
-
-static void bfin_sec_disable(struct irq_data *d)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(d->irq);
-
- bfin_sec_disable_sci(sid);
- bfin_sec_disable_ssi(sid);
-
- hard_local_irq_restore(flags);
-}
-
-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 irq)
-{
- unsigned long flags = hard_local_irq_save();
- unsigned int sid = BFIN_SYSIRQ(irq);
-
- bfin_write32(SEC_RAISE, sid);
-
- hard_local_irq_restore(flags);
-}
-
-static void init_software_driven_irq(void)
-{
- bfin_sec_set_ssi_coreid(34, 0);
- bfin_sec_set_ssi_coreid(35, 1);
-
- bfin_sec_enable_sci(35);
- bfin_sec_enable_ssi(35);
- bfin_sec_set_ssi_coreid(36, 0);
- bfin_sec_set_ssi_coreid(37, 1);
- bfin_sec_enable_sci(37);
- bfin_sec_enable_ssi(37);
-}
-
-void handle_sec_sfi_fault(uint32_t gstat)
-{
-
-}
-
-void handle_sec_sci_fault(uint32_t gstat)
-{
- uint32_t core_id;
- uint32_t cstat;
-
- core_id = gstat & SEC_GSTAT_SCI;
- cstat = bfin_read_SEC_SCI(core_id, SEC_CSTAT);
- if (cstat & SEC_CSTAT_ERR) {
- switch (cstat & SEC_CSTAT_ERRC) {
- case SEC_CSTAT_ACKERR:
- printk(KERN_DEBUG "sec ack err\n");
- break;
- default:
- printk(KERN_DEBUG "sec sci unknown err\n");
- }
- }
-
-}
-
-void handle_sec_ssi_fault(uint32_t gstat)
-{
- uint32_t sid;
- uint32_t sstat;
-
- sid = gstat & SEC_GSTAT_SID;
- sstat = bfin_read_SEC_SSTAT(sid);
-
-}
-
-void handle_sec_fault(uint32_t sec_gstat)
-{
- if (sec_gstat & SEC_GSTAT_ERR) {
-
- switch (sec_gstat & SEC_GSTAT_ERRC) {
- case 0:
- handle_sec_sfi_fault(sec_gstat);
- break;
- case SEC_GSTAT_SCIERR:
- handle_sec_sci_fault(sec_gstat);
- break;
- case SEC_GSTAT_SSIERR:
- handle_sec_ssi_fault(sec_gstat);
- break;
- }
-
-
- }
-}
-
-static struct irqaction bfin_fault_irq = {
- .name = "Blackfin fault",
-};
-
-static irqreturn_t bfin_fault_routine(int irq, void *data)
-{
- struct pt_regs *fp = get_irq_regs();
-
- 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("Core 0 hardware error");
- break;
- case IRQ_C0_NMI_L1_PARITY_ERR:
- panic("Core 0 NMI L1 parity error");
- break;
- case IRQ_SEC_ERR:
- pr_err("SEC error\n");
- handle_sec_fault(bfin_read32(SEC_GSTAT));
- break;
- default:
- panic("Unknown fault %d", irq);
- }
-
- return IRQ_HANDLED;
-}
-#endif /* SEC_GCTL */
-
-static struct irq_chip bfin_core_irqchip = {
- .name = "CORE",
- .irq_mask = bfin_core_mask_irq,
- .irq_unmask = bfin_core_unmask_irq,
-};
-
-#ifndef SEC_GCTL
-static struct irq_chip bfin_internal_irqchip = {
- .name = "INTN",
- .irq_mask = bfin_internal_mask_irq_chip,
- .irq_unmask = bfin_internal_unmask_irq_chip,
- .irq_disable = bfin_internal_mask_irq_chip,
- .irq_enable = bfin_internal_unmask_irq_chip,
-#ifdef CONFIG_SMP
- .irq_set_affinity = bfin_internal_set_affinity,
-#endif
- .irq_set_wake = bfin_internal_set_wake_chip,
-};
-#else
-static struct irq_chip bfin_sec_irqchip = {
- .name = "SEC",
- .irq_mask_ack = bfin_sec_mask_ack_irq,
- .irq_mask = bfin_sec_mask_ack_irq,
- .irq_unmask = bfin_sec_unmask_irq,
- .irq_eoi = bfin_sec_unmask_irq,
- .irq_disable = bfin_sec_disable,
- .irq_enable = bfin_sec_enable,
-};
-#endif
-
-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, &regs);
- ipipe_trace_irq_exit(irq);
-#else /* !CONFIG_IPIPE */
- generic_handle_irq(irq);
-#endif /* !CONFIG_IPIPE */
-}
-
-#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(struct irq_data *d)
-{
- unsigned int irq = d->irq;
-
- mac_stat_int_mask &= ~(1L << (irq - IRQ_MAC_PHYINT));
-#ifdef BF537_FAMILY
- 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(struct irq_data *d)
-{
- unsigned int irq = d->irq;
-
-#ifdef BF537_FAMILY
- 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(struct irq_data *d, unsigned int state)
-{
-#ifdef BF537_FAMILY
- return bfin_internal_set_wake(IRQ_GENERIC_ERROR, state);
-#else
- return bfin_internal_set_wake(IRQ_MAC_ERROR, state);
-#endif
-}
-#else
-# define bfin_mac_status_set_wake NULL
-#endif
-
-static struct irq_chip bfin_mac_status_irqchip = {
- .name = "MACST",
- .irq_mask = bfin_mac_status_mask_irq,
- .irq_unmask = bfin_mac_status_unmask_irq,
- .irq_set_wake = bfin_mac_status_set_wake,
-};
-
-void bfin_demux_mac_status_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"
- "(EMAC_SYSTAT=0x%X)\n",
- __func__, __FILE__, __LINE__, status);
-}
-#endif
-
-static inline void bfin_set_irq_handler(struct irq_data *d, irq_flow_handler_t handle)
-{
-#ifdef CONFIG_IPIPE
- handle = handle_level_irq;
-#endif
- irq_set_handler_locked(d, handle);
-}
-
-#ifdef CONFIG_GPIO_ADI
-
-static DECLARE_BITMAP(gpio_enabled, MAX_BLACKFIN_GPIOS);
-
-static void bfin_gpio_ack_irq(struct irq_data *d)
-{
- /* AFAIK ack_irq in case mask_ack is provided
- * get's only called for edge sense irqs
- */
- set_gpio_data(irq_to_gpio(d->irq), 0);
-}
-
-static void bfin_gpio_mask_ack_irq(struct irq_data *d)
-{
- unsigned int irq = d->irq;
- u32 gpionr = irq_to_gpio(irq);
-
- if (!irqd_is_level_type(d))
- set_gpio_data(gpionr, 0);
-
- set_gpio_maska(gpionr, 0);
-}
-
-static void bfin_gpio_mask_irq(struct irq_data *d)
-{
- set_gpio_maska(irq_to_gpio(d->irq), 0);
-}
-
-static void bfin_gpio_unmask_irq(struct irq_data *d)
-{
- set_gpio_maska(irq_to_gpio(d->irq), 1);
-}
-
-static unsigned int bfin_gpio_irq_startup(struct irq_data *d)
-{
- u32 gpionr = irq_to_gpio(d->irq);
-
- if (__test_and_set_bit(gpionr, gpio_enabled))
- bfin_gpio_irq_prepare(gpionr);
-
- bfin_gpio_unmask_irq(d);
-
- return 0;
-}
-
-static void bfin_gpio_irq_shutdown(struct irq_data *d)
-{
- u32 gpionr = irq_to_gpio(d->irq);
-
- bfin_gpio_mask_irq(d);
- __clear_bit(gpionr, gpio_enabled);
- bfin_gpio_irq_free(gpionr);
-}
-
-static int bfin_gpio_irq_type(struct irq_data *d, unsigned int type)
-{
- unsigned int irq = d->irq;
- int ret;
- char buf[16];
- u32 gpionr = irq_to_gpio(irq);
-
- if (type == IRQ_TYPE_PROBE) {
- /* only probe unenabled GPIO interrupt lines */
- 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)) {
-
- 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);
-
- } else {
- __clear_bit(gpionr, gpio_enabled);
- return 0;
- }
-
- set_gpio_inen(gpionr, 0);
- set_gpio_dir(gpionr, 0);
-
- if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- set_gpio_both(gpionr, 1);
- else
- set_gpio_both(gpionr, 0);
-
- if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW)))
- set_gpio_polar(gpionr, 1); /* low or falling edge denoted by one */
- else
- set_gpio_polar(gpionr, 0); /* high or rising edge denoted by zero */
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
- set_gpio_edge(gpionr, 1);
- set_gpio_inen(gpionr, 1);
- set_gpio_data(gpionr, 0);
-
- } else {
- set_gpio_edge(gpionr, 0);
- set_gpio_inen(gpionr, 1);
- }
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- bfin_set_irq_handler(d, handle_edge_irq);
- else
- bfin_set_irq_handler(d, handle_level_irq);
-
- return 0;
-}
-
-static void bfin_demux_gpio_block(unsigned int irq)
-{
- unsigned int gpio, mask;
-
- gpio = irq_to_gpio(irq);
- mask = get_gpiop_data(gpio) & get_gpiop_maska(gpio);
-
- while (mask) {
- if (mask & 1)
- bfin_handle_irq(irq);
- irq++;
- mask >>= 1;
- }
-}
-
-void bfin_demux_gpio_irq(struct irq_desc *desc)
-{
- unsigned int inta_irq = irq_desc_get_irq(desc);
- unsigned int irq;
-
- switch (inta_irq) {
-#if defined(BF537_FAMILY)
- case IRQ_PF_INTA_PG_INTA:
- bfin_demux_gpio_block(IRQ_PF0);
- irq = IRQ_PG0;
- break;
- case IRQ_PH_INTA_MAC_RX:
- irq = IRQ_PH0;
- break;
-#elif defined(BF533_FAMILY)
- case IRQ_PROG_INTA:
- irq = IRQ_PF0;
- break;
-#elif defined(BF538_FAMILY)
- case IRQ_PORTF_INTA:
- irq = IRQ_PF0;
- break;
-#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
- case IRQ_PORTF_INTA:
- irq = IRQ_PF0;
- break;
- case IRQ_PORTG_INTA:
- irq = IRQ_PG0;
- break;
- case IRQ_PORTH_INTA:
- irq = IRQ_PH0;
- break;
-#elif defined(CONFIG_BF561)
- case IRQ_PROG0_INTA:
- irq = IRQ_PF0;
- break;
- case IRQ_PROG1_INTA:
- irq = IRQ_PF16;
- break;
- case IRQ_PROG2_INTA:
- irq = IRQ_PF32;
- break;
-#endif
- default:
- BUG();
- return;
- }
-
- bfin_demux_gpio_block(irq);
-}
-
-#ifdef CONFIG_PM
-
-static int bfin_gpio_set_wake(struct irq_data *d, unsigned int state)
-{
- return bfin_gpio_pm_wakeup_ctrl(irq_to_gpio(d->irq), state);
-}
-
-#else
-
-# define bfin_gpio_set_wake NULL
-
-#endif
-
-static struct irq_chip bfin_gpio_irqchip = {
- .name = "GPIO",
- .irq_ack = bfin_gpio_ack_irq,
- .irq_mask = bfin_gpio_mask_irq,
- .irq_mask_ack = bfin_gpio_mask_ack_irq,
- .irq_unmask = bfin_gpio_unmask_irq,
- .irq_disable = bfin_gpio_mask_irq,
- .irq_enable = bfin_gpio_unmask_irq,
- .irq_set_type = bfin_gpio_irq_type,
- .irq_startup = bfin_gpio_irq_startup,
- .irq_shutdown = bfin_gpio_irq_shutdown,
- .irq_set_wake = bfin_gpio_set_wake,
-};
-
-#endif
-
-#ifdef CONFIG_PM
-
-#ifdef SEC_GCTL
-static u32 save_pint_sec_ctl[NR_PINT_SYS_IRQS];
-
-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 + BFIN_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 + BFIN_SYSIRQ(IRQ_PINT0), save_pint_sec_ctl[bank]);
-}
-
-static struct syscore_ops sec_pm_syscore_ops = {
- .suspend = sec_suspend,
- .resume = sec_resume,
-};
-#endif
-
-#endif
-
-void init_exception_vectors(void)
-{
- /* cannot program in software:
- * evt0 - emulation (jtag)
- * evt1 - reset
- */
- bfin_write_EVT2(evt_nmi);
- bfin_write_EVT3(trap);
- bfin_write_EVT5(evt_ivhw);
- bfin_write_EVT6(evt_timer);
- bfin_write_EVT7(evt_evt7);
- bfin_write_EVT8(evt_evt8);
- bfin_write_EVT9(evt_evt9);
- bfin_write_EVT10(evt_evt10);
- bfin_write_EVT11(evt_evt11);
- bfin_write_EVT12(evt_evt12);
- bfin_write_EVT13(evt_evt13);
- bfin_write_EVT14(evt_evt14);
- bfin_write_EVT15(evt_system_call);
- CSYNC();
-}
-
-#ifndef 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;
-
- /* Disable all the peripheral intrs - page 4-29 HW Ref manual */
-#ifdef SIC_IMASK0
- bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
- bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
-# ifdef SIC_IMASK2
- bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
-# endif
-# if defined(CONFIG_SMP) || defined(CONFIG_ICC)
- bfin_write_SICB_IMASK0(SIC_UNMASK_ALL);
- bfin_write_SICB_IMASK1(SIC_UNMASK_ALL);
-# endif
-#else
- bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
-#endif
-
- local_irq_disable();
-
- for (irq = 0; irq <= SYS_IRQS; irq++) {
- if (irq <= IRQ_CORETMR)
- irq_set_chip(irq, &bfin_core_irqchip);
- else
- irq_set_chip(irq, &bfin_internal_irqchip);
-
- switch (irq) {
-#if !BFIN_GPIO_PINT
-#if defined(BF537_FAMILY)
- case IRQ_PH_INTA_MAC_RX:
- case IRQ_PF_INTA_PG_INTA:
-#elif defined(BF533_FAMILY)
- case IRQ_PROG_INTA:
-#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)
- case IRQ_PORTF_INTA:
- case IRQ_PORTG_INTA:
- case IRQ_PORTH_INTA:
-#elif defined(CONFIG_BF561)
- case IRQ_PROG0_INTA:
- case IRQ_PROG1_INTA:
- case IRQ_PROG2_INTA:
-#elif defined(BF538_FAMILY)
- case IRQ_PORTF_INTA:
-#endif
- irq_set_chained_handler(irq, bfin_demux_gpio_irq);
- break;
-#endif
-#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
- case IRQ_MAC_ERROR:
- irq_set_chained_handler(irq,
- bfin_demux_mac_status_irq);
- break;
-#endif
-#if defined(CONFIG_SMP) || defined(CONFIG_ICC)
- case IRQ_SUPPLE_0:
- case IRQ_SUPPLE_1:
- irq_set_handler(irq, handle_percpu_irq);
- break;
-#endif
-
-#ifdef CONFIG_TICKSOURCE_CORETMR
- case IRQ_CORETMR:
-# ifdef CONFIG_SMP
- irq_set_handler(irq, handle_percpu_irq);
-# else
- irq_set_handler(irq, handle_simple_irq);
-# endif
- break;
-#endif
-
-#ifdef CONFIG_TICKSOURCE_GPTMR0
- case IRQ_TIMER0:
- irq_set_handler(irq, handle_simple_irq);
- break;
-#endif
-
- default:
-#ifdef CONFIG_IPIPE
- irq_set_handler(irq, handle_level_irq);
-#else
- irq_set_handler(irq, handle_simple_irq);
-#endif
- break;
- }
- }
-
- init_mach_irq();
-
-#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);
-#endif
- /* if configured as edge, then will be changed to do_edge_IRQ */
-#ifdef CONFIG_GPIO_ADI
- 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();
- CSYNC();
- bfin_write_ILAT(ilat);
- CSYNC();
-
- printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n");
- /* IMASK=xxx is equivalent to STI xx or bfin_irq_flags=xx,
- * local_irq_enable()
- */
- program_IAR();
- /* Therefore it's better to setup IARs before interrupts enabled */
- search_IAR();
-
- /* 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;
-
-
- /* This implicitly covers ANOMALY_05000171
- * Boot-ROM code modifies SICA_IWRx wakeup registers
- */
-#ifdef SIC_IWR0
- bfin_write_SIC_IWR0(IWR_DISABLE_ALL);
-# 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
- */
- 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
- bfin_write_SIC_IWR(IWR_DISABLE_ALL);
-#endif
- return 0;
-}
-
-#ifdef CONFIG_DO_IRQ_L1
-__attribute__((l1_text))
-#endif
-static int vec_to_irq(int vec)
-{
- struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
- struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
- unsigned long sic_status[3];
- if (likely(vec == EVT_IVTMR_P))
- return IRQ_CORETMR;
-#ifdef SIC_ISR
- sic_status[0] = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
-#else
- 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();
- }
-#endif
-#ifdef SIC_ISR2
- sic_status[2] = bfin_read_SIC_ISR2() & bfin_read_SIC_IMASK2();
-#endif
-
- for (;; ivg++) {
- if (ivg >= ivg_stop)
- return -1;
-#ifdef SIC_ISR
- if (sic_status[0] & ivg->isrflag)
-#else
- if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag)
-#endif
- return ivg->irqno;
- }
-}
-
-#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();
-
- for (irq = 0; irq <= SYS_IRQS; irq++) {
- if (irq <= IRQ_CORETMR) {
- irq_set_chip_and_handler(irq, &bfin_core_irqchip,
- handle_simple_irq);
-#if defined(CONFIG_TICKSOURCE_CORETMR) && defined(CONFIG_SMP)
- if (irq == IRQ_CORETMR)
- irq_set_handler(irq, handle_percpu_irq);
-#endif
- } else if (irq >= BFIN_IRQ(34) && irq <= BFIN_IRQ(37)) {
- irq_set_chip_and_handler(irq, &bfin_sec_irqchip,
- handle_percpu_irq);
- } else {
- irq_set_chip(irq, &bfin_sec_irqchip);
- irq_set_handler(irq, handle_fasteoi_irq);
- __irq_set_preflow_handler(irq, bfin_sec_preflow_handler);
- }
- }
-
- 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);
-
- /* 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(BFIN_SYSIRQ(IRQ_WATCH0));
- bfin_sec_enable_ssi(BFIN_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();
-
-#ifdef CONFIG_PM
- register_syscore_ops(&sec_pm_syscore_ops);
-#endif
-
- bfin_fault_irq.handler = bfin_fault_routine;
-#ifdef CONFIG_L1_PARITY_CHECK
- setup_irq(IRQ_C0_NMI_L1_PARITY_ERR, &bfin_fault_irq);
-#endif
- setup_irq(IRQ_C0_DBL_FAULT, &bfin_fault_irq);
- setup_irq(IRQ_SEC_ERR, &bfin_fault_irq);
-
- 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 /* SEC_GCTL */
-
-#ifdef CONFIG_DO_IRQ_L1
-__attribute__((l1_text))
-#endif
-void do_irq(int vec, struct pt_regs *fp)
-{
- int irq = vec_to_irq(vec);
- if (irq == -1)
- return;
- asm_do_IRQ(irq, fp);
-}
-
-#ifdef CONFIG_IPIPE
-
-int __ipipe_get_irq_priority(unsigned irq)
-{
- int ient, prio;
-
- 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) {
- for (prio = 0; prio <= IVG13-IVG7; prio++) {
- if (ivg7_13[prio].ifirst <= ivg &&
- ivg7_13[prio].istop > ivg)
- return IVG7 + prio;
- }
- }
- }
-#endif
-
- 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;
- int irq, s = 0;
-
- irq = vec_to_irq(vec);
- if (irq == -1)
- return 0;
-
- 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. */
- __this_cpu_write(__ipipe_tick_regs.ipend, regs->ipend);
- __this_cpu_write(__ipipe_tick_regs.pc, regs->pc);
- if (this_domain != ipipe_root_domain)
- __this_cpu_and(__ipipe_tick_regs.ipend, ~0x10);
- else
- __this_cpu_or(__ipipe_tick_regs.ipend, 0x10);
- }
-
- /*
- * We don't want Linux interrupt handlers to run at the
- * current core priority level (i.e. < EVT15), since this
- * might delay other interrupts handled by a high priority
- * domain. Here is what we do instead:
- *
- * - we raise the SYNCDEFER bit to prevent
- * __ipipe_handle_irq() to sync the pipeline for the root
- * stage for the incoming interrupt. Upon return, that IRQ is
- * pending in the interrupt log.
- *
- * - we raise the TIF_IRQ_SYNC bit for the current thread, so
- * that _schedule_and_signal_from_int will eventually sync the
- * pipeline from EVT15.
- */
- 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 (user_mode(regs) &&
- !ipipe_test_foreign_stack() &&
- (current->ipipe_flags & PF_EVTRET) != 0) {
- /*
- * Testing for user_regs() does NOT fully eliminate
- * foreign stack contexts, because of the forged
- * interrupt returns we do through
- * __ipipe_call_irqtail. In that case, we might have
- * preempted a foreign stack context in a high
- * priority domain, with a single interrupt level now
- * pending after the irqtail unwinding is done. In
- * which case user_mode() is now true, and the event
- * gets dispatched spuriously.
- */
- current->ipipe_flags &= ~PF_EVTRET;
- __ipipe_dispatch_event(IPIPE_EVENT_RETURN, regs);
- }
-
- 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 */