diff options
Diffstat (limited to 'arch/blackfin/mach-common/ints-priority.c')
| -rw-r--r-- | arch/blackfin/mach-common/ints-priority.c | 1384 |
1 files changed, 655 insertions, 729 deletions
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c index da7e3c63746..1f94784eab6 100644 --- a/arch/blackfin/mach-common/ints-priority.c +++ b/arch/blackfin/mach-common/ints-priority.c @@ -15,34 +15,18 @@ #include <linux/kernel_stat.h> #include <linux/seq_file.h> #include <linux/irq.h> +#include <linux/sched.h> +#include <linux/syscore_ops.h> +#include <asm/delay.h> #ifdef CONFIG_IPIPE #include <linux/ipipe.h> #endif -#ifdef CONFIG_KGDB -#include <linux/kgdb.h> -#endif #include <asm/traps.h> #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 +#include <asm/traps.h> /* * NOTES: @@ -62,22 +46,20 @@ unsigned long bfin_irq_flags = 0x1f; EXPORT_SYMBOL(bfin_irq_flags); #endif -/* The number of spurious interrupts */ -atomic_t num_spurious; - #ifdef CONFIG_PM unsigned long bfin_sic_iwr[3]; /* Up to 3 SIC_IWRx registers */ unsigned vr_wakeup; #endif -struct ivgx { +#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]; -struct ivg_slice { +static struct ivg_slice { /* position of first irq in ivg_table for given ivg */ struct ivgx *ifirst; struct ivgx *istop; @@ -98,7 +80,8 @@ static void __init search_IAR(void) for (irqN = 0; irqN < NR_PERI_INTS; irqN += 4) { int irqn; - u32 iar = bfin_read32((unsigned long *)SIC_IAR0 + + 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)) @@ -106,7 +89,6 @@ static void __init search_IAR(void) (irqN >> 3) #endif ); - for (irqn = irqN; irqn < irqN + 4; ++irqn) { int iar_shift = (irqn & 7) * 4; if (ivg == (0xf & (iar >> iar_shift))) { @@ -119,26 +101,26 @@ static void __init search_IAR(void) } } } +#endif /* * This is for core internal IRQs */ - -static void bfin_ack_noop(unsigned int irq) +void bfin_ack_noop(struct irq_data *d) { /* Dummy function. */ } -static void bfin_core_mask_irq(unsigned int irq) +static void bfin_core_mask_irq(struct irq_data *d) { - bfin_irq_flags &= ~(1 << irq); + bfin_irq_flags &= ~(1 << d->irq); if (!hard_irqs_disabled()) hard_local_irq_enable(); } -static void bfin_core_unmask_irq(unsigned int irq) +static void bfin_core_unmask_irq(struct irq_data *d) { - bfin_irq_flags |= 1 << irq; + 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 @@ -153,86 +135,90 @@ static void bfin_core_unmask_irq(unsigned int irq) return; } -static void bfin_internal_mask_irq(unsigned int irq) +#ifndef SEC_GCTL +void bfin_internal_mask_irq(unsigned int irq) { - unsigned long flags; - -#ifdef CONFIG_BF53x - flags = hard_local_irq_save(); - bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() & - ~(1 << SIC_SYSIRQ(irq))); -#else - unsigned mask_bank, mask_bit; - flags = hard_local_irq_save(); - mask_bank = SIC_SYSIRQ(irq) / 32; - mask_bit = SIC_SYSIRQ(irq) % 32; + 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)); -#ifdef CONFIG_SMP + ~(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 -#endif + ~(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 -static void bfin_internal_unmask_irq_affinity(unsigned int irq, +void bfin_internal_unmask_irq_affinity(unsigned int irq, const struct cpumask *affinity) #else -static void bfin_internal_unmask_irq(unsigned int irq) +void bfin_internal_unmask_irq(unsigned int irq) #endif { - unsigned long flags; + unsigned long flags = hard_local_irq_save(); -#ifdef CONFIG_BF53x - flags = hard_local_irq_save(); - bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() | - (1 << SIC_SYSIRQ(irq))); -#else - unsigned mask_bank, mask_bit; - flags = hard_local_irq_save(); - mask_bank = SIC_SYSIRQ(irq) / 32; - mask_bit = SIC_SYSIRQ(irq) % 32; -#ifdef CONFIG_SMP +#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 +# endif bfin_write_SIC_IMASK(mask_bank, - bfin_read_SIC_IMASK(mask_bank) | - (1 << mask_bit)); -#ifdef CONFIG_SMP + 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 + 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(unsigned int irq) +static void bfin_internal_unmask_irq_chip(struct irq_data *d) { - struct irq_desc *desc = irq_to_desc(irq); - bfin_internal_unmask_irq_affinity(irq, desc->affinity); + bfin_internal_unmask_irq_affinity(d->irq, d->affinity); } -static int bfin_internal_set_affinity(unsigned int irq, const struct cpumask *mask) +static int bfin_internal_set_affinity(struct irq_data *d, + const struct cpumask *mask, bool force) { - bfin_internal_mask_irq(irq); - bfin_internal_unmask_irq_affinity(irq, mask); + 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 -#ifdef CONFIG_PM +#if defined(CONFIG_PM) int bfin_internal_set_wake(unsigned int irq, unsigned int state) { u32 bank, bit, wakeup = 0; unsigned long flags; - bank = SIC_SYSIRQ(irq) / 32; - bit = SIC_SYSIRQ(irq) % 32; + bank = BFIN_SYSIRQ(irq) / 32; + bit = BFIN_SYSIRQ(irq) % 32; switch (irq) { #ifdef IRQ_RTC @@ -279,139 +265,309 @@ int bfin_internal_set_wake(unsigned int irq, unsigned int state) 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 -static struct irq_chip bfin_core_irqchip = { - .name = "CORE", - .ack = bfin_ack_noop, - .mask = bfin_core_mask_irq, - .unmask = bfin_core_unmask_irq, -}; +#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); -static struct irq_chip bfin_internal_irqchip = { - .name = "INTN", - .ack = bfin_ack_noop, - .mask = bfin_internal_mask_irq, - .unmask = bfin_internal_unmask_irq, - .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 -}; + bfin_write_SEC_SCI(0, SEC_CSID, sid); + + hard_local_irq_restore(flags); +} -static void bfin_handle_irq(unsigned irq) +static void bfin_sec_mask_ack_irq(struct irq_data *d) { -#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 */ + 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); } -#ifdef BF537_GENERIC_ERROR_INT_DEMUX -static int error_int_mask; +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_generic_error_mask_irq(unsigned int irq) +static void bfin_sec_enable_ssi(unsigned int sid) { - error_int_mask &= ~(1L << (irq - IRQ_PPI_ERROR)); - if (!error_int_mask) - bfin_internal_mask_irq(IRQ_GENERIC_ERROR); + 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_generic_error_unmask_irq(unsigned int irq) +static void bfin_sec_disable_ssi(unsigned int sid) { - bfin_internal_unmask_irq(IRQ_GENERIC_ERROR); - error_int_mask |= 1L << (irq - IRQ_PPI_ERROR); + 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 struct irq_chip bfin_generic_error_irqchip = { - .name = "ERROR", - .ack = bfin_ack_noop, - .mask_ack = bfin_generic_error_mask_irq, - .mask = bfin_generic_error_mask_irq, - .unmask = bfin_generic_error_unmask_irq, -}; +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_demux_error_irq(unsigned int int_err_irq, - struct irq_desc *inta_desc) +static void bfin_sec_enable_sci(unsigned int sid) { - int irq = 0; + unsigned long flags = hard_local_irq_save(); + uint32_t reg_sctl = bfin_read_SEC_SCTL(sid); -#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) - if (bfin_read_EMAC_SYSTAT() & EMAC_ERR_MASK) - irq = IRQ_MAC_ERROR; + if (sid == BFIN_SYSIRQ(IRQ_WATCH0)) + reg_sctl |= SEC_SCTL_FAULT_EN; else -#endif - if (bfin_read_SPORT0_STAT() & SPORT_ERR_MASK) - irq = IRQ_SPORT0_ERROR; - else if (bfin_read_SPORT1_STAT() & SPORT_ERR_MASK) - irq = IRQ_SPORT1_ERROR; - else if (bfin_read_PPI_STATUS() & PPI_ERR_MASK) - irq = IRQ_PPI_ERROR; - else if (bfin_read_CAN_GIF() & CAN_ERR_MASK) - 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) == UART_ERR_MASK) - irq = IRQ_UART0_ERROR; - else if ((bfin_read_UART1_IIR() & UART_ERR_MASK) == UART_ERR_MASK) - irq = IRQ_UART1_ERROR; + reg_sctl |= SEC_SCTL_INT_EN; + bfin_write_SEC_SCTL(sid, reg_sctl); - if (irq) { - if (error_int_mask & (1L << (irq - IRQ_PPI_ERROR))) - bfin_handle_irq(irq); - else { - - switch (irq) { - case IRQ_PPI_ERROR: - bfin_write_PPI_STATUS(PPI_ERR_MASK); - break; -#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) - case IRQ_MAC_ERROR: - bfin_write_EMAC_SYSTAT(EMAC_ERR_MASK); - break; -#endif - case IRQ_SPORT0_ERROR: - bfin_write_SPORT0_STAT(SPORT_ERR_MASK); - break; + hard_local_irq_restore(flags); +} - case IRQ_SPORT1_ERROR: - bfin_write_SPORT1_STAT(SPORT_ERR_MASK); - break; +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); - case IRQ_CAN_ERROR: - bfin_write_CAN_GIS(CAN_ERR_MASK); - break; + reg_sctl &= ((uint32_t)~SEC_SCTL_INT_EN); + bfin_write_SEC_SCTL(sid, reg_sctl); - case IRQ_SPI_ERROR: - bfin_write_SPI_STAT(SPI_ERR_MASK); - break; + hard_local_irq_restore(flags); +} - default: - break; - } +static void bfin_sec_enable(struct irq_data *d) +{ + unsigned long flags = hard_local_irq_save(); + unsigned int sid = BFIN_SYSIRQ(d->irq); - pr_debug("IRQ %d:" - " MASKED PERIPHERAL ERROR INTERRUPT ASSERTED\n", - 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 bfin_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); +} + +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 unknow err\n"); } - } else - printk(KERN_ERR - "%s : %s : LINE %d :\nIRQ ?: PERIPHERAL ERROR" - " INTERRUPT ASSERTED BUT NO SOURCE FOUND\n", - __func__, __FILE__, __LINE__); + } + +} + +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, ®s); + ipipe_trace_irq_exit(irq); +#else /* !CONFIG_IPIPE */ + generic_handle_irq(irq); +#endif /* !CONFIG_IPIPE */ } -#endif /* BF537_GENERIC_ERROR_INT_DEMUX */ #if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE) static int mac_stat_int_mask; @@ -448,10 +604,12 @@ static void bfin_mac_status_ack_irq(unsigned int irq) } } -static void bfin_mac_status_mask_irq(unsigned int irq) +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_GENERIC_ERROR_INT_DEMUX +#ifdef BF537_FAMILY switch (irq) { case IRQ_MAC_PHYINT: bfin_write_EMAC_SYSCTL(bfin_read_EMAC_SYSCTL() & ~PHYIE); @@ -466,9 +624,11 @@ static void bfin_mac_status_mask_irq(unsigned int irq) bfin_mac_status_ack_irq(irq); } -static void bfin_mac_status_unmask_irq(unsigned int irq) +static void bfin_mac_status_unmask_irq(struct irq_data *d) { -#ifdef BF537_GENERIC_ERROR_INT_DEMUX + unsigned int irq = d->irq; + +#ifdef BF537_FAMILY switch (irq) { case IRQ_MAC_PHYINT: bfin_write_EMAC_SYSCTL(bfin_read_EMAC_SYSCTL() | PHYIE); @@ -484,29 +644,27 @@ static void bfin_mac_status_unmask_irq(unsigned int irq) } #ifdef CONFIG_PM -int bfin_mac_status_set_wake(unsigned int irq, unsigned int state) +int bfin_mac_status_set_wake(struct irq_data *d, unsigned int state) { -#ifdef BF537_GENERIC_ERROR_INT_DEMUX +#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", - .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 + .irq_mask = bfin_mac_status_mask_irq, + .irq_unmask = bfin_mac_status_unmask_irq, + .irq_set_wake = bfin_mac_status_set_wake, }; -static void bfin_demux_mac_status_irq(unsigned int int_err_irq, - struct irq_desc *inta_desc) +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(); @@ -523,87 +681,83 @@ static void bfin_demux_mac_status_irq(unsigned int int_err_irq, } else { bfin_mac_status_ack_irq(irq); pr_debug("IRQ %d:" - " MASKED MAC ERROR INTERRUPT ASSERTED\n", - irq); + " 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); + "%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(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; + handle = handle_level_irq; #endif + __irq_set_handler_locked(irq, handle); } -static DECLARE_BITMAP(gpio_enabled, MAX_BLACKFIN_GPIOS); -extern void bfin_gpio_irq_prepare(unsigned gpio); +#ifdef CONFIG_GPIO_ADI -#if !defined(CONFIG_BF54x) +static DECLARE_BITMAP(gpio_enabled, MAX_BLACKFIN_GPIOS); -static void bfin_gpio_ack_irq(unsigned int irq) +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(irq), 0); + set_gpio_data(irq_to_gpio(d->irq), 0); } -static void bfin_gpio_mask_ack_irq(unsigned int irq) +static void bfin_gpio_mask_ack_irq(struct irq_data *d) { - struct irq_desc *desc = irq_desc + irq; + unsigned int irq = d->irq; u32 gpionr = irq_to_gpio(irq); - if (desc->handle_irq == handle_edge_irq) + if (!irqd_is_level_type(d)) set_gpio_data(gpionr, 0); set_gpio_maska(gpionr, 0); } -static void bfin_gpio_mask_irq(unsigned int irq) +static void bfin_gpio_mask_irq(struct irq_data *d) { - set_gpio_maska(irq_to_gpio(irq), 0); + set_gpio_maska(irq_to_gpio(d->irq), 0); } -static void bfin_gpio_unmask_irq(unsigned int irq) +static void bfin_gpio_unmask_irq(struct irq_data *d) { - set_gpio_maska(irq_to_gpio(irq), 1); + set_gpio_maska(irq_to_gpio(d->irq), 1); } -static unsigned int bfin_gpio_irq_startup(unsigned int irq) +static unsigned int bfin_gpio_irq_startup(struct irq_data *d) { - u32 gpionr = irq_to_gpio(irq); + u32 gpionr = irq_to_gpio(d->irq); if (__test_and_set_bit(gpionr, gpio_enabled)) bfin_gpio_irq_prepare(gpionr); - bfin_gpio_unmask_irq(irq); + bfin_gpio_unmask_irq(d); return 0; } -static void bfin_gpio_irq_shutdown(unsigned int irq) +static void bfin_gpio_irq_shutdown(struct irq_data *d) { - u32 gpionr = irq_to_gpio(irq); + u32 gpionr = irq_to_gpio(d->irq); - bfin_gpio_mask_irq(irq); + bfin_gpio_mask_irq(d); __clear_bit(gpionr, gpio_enabled); bfin_gpio_irq_free(gpionr); } -static int bfin_gpio_irq_type(unsigned int irq, unsigned int type) +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); @@ -663,30 +817,40 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type) return 0; } -#ifdef CONFIG_PM -int bfin_gpio_set_wake(unsigned int irq, unsigned int state) +static void bfin_demux_gpio_block(unsigned int irq) { - return gpio_pm_wakeup_ctrl(irq_to_gpio(irq), state); + 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; + } } -#endif -static void bfin_demux_gpio_irq(unsigned int inta_irq, - struct irq_desc *desc) +void bfin_demux_gpio_irq(unsigned int inta_irq, + struct irq_desc *desc) { - unsigned int i, gpio, mask, irq, search = 0; + unsigned int irq; switch (inta_irq) { -#if defined(CONFIG_BF53x) - case IRQ_PROG_INTA: - irq = IRQ_PF0; - search = 1; +#if defined(BF537_FAMILY) + case IRQ_PF_INTA_PG_INTA: + bfin_demux_gpio_block(IRQ_PF0); + irq = IRQ_PG0; break; -# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)) - case IRQ_MAC_RX: + case IRQ_PH_INTA_MAC_RX: irq = IRQ_PH0; break; -# endif -#elif defined(CONFIG_BF538) || defined(CONFIG_BF539) +#elif defined(BF533_FAMILY) + case IRQ_PROG_INTA: + irq = IRQ_PF0; + break; +#elif defined(BF538_FAMILY) case IRQ_PORTF_INTA: irq = IRQ_PF0; break; @@ -716,372 +880,74 @@ static void bfin_demux_gpio_irq(unsigned int inta_irq, return; } - if (search) { - for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) { - irq += i; - - mask = get_gpiop_data(i) & get_gpiop_maska(i); - - while (mask) { - if (mask & 1) - bfin_handle_irq(irq); - irq++; - mask >>= 1; - } - } - } else { - gpio = irq_to_gpio(irq); - mask = get_gpiop_data(gpio) & get_gpiop_maska(gpio); - - do { - if (mask & 1) - bfin_handle_irq(irq); - irq++; - mask >>= 1; - } while (mask); - } - + bfin_demux_gpio_block(irq); } -#else /* CONFIG_BF54x */ - -#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, -}; - -inline unsigned int get_irq_base(u32 bank, u8 bmap) -{ - unsigned int 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 void bfin_gpio_ack_irq(unsigned int irq) -{ - struct irq_desc *desc = irq_desc + irq; - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - u32 pintbit = PINT_BIT(pint_val); - u32 bank = PINT_2_BANK(pint_val); - - 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]->invert_set = pintbit; - } - pint[bank]->request = pintbit; - -} - -static void bfin_gpio_mask_ack_irq(unsigned int irq) -{ - struct irq_desc *desc = irq_desc + irq; - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - u32 pintbit = PINT_BIT(pint_val); - u32 bank = PINT_2_BANK(pint_val); - - 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]->invert_set = pintbit; - } - - pint[bank]->request = pintbit; - pint[bank]->mask_clear = pintbit; -} - -static void bfin_gpio_mask_irq(unsigned int irq) -{ - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - - pint[PINT_2_BANK(pint_val)]->mask_clear = PINT_BIT(pint_val); -} - -static void bfin_gpio_unmask_irq(unsigned int irq) -{ - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - u32 pintbit = PINT_BIT(pint_val); - u32 bank = PINT_2_BANK(pint_val); - - pint[bank]->request = pintbit; - pint[bank]->mask_set = pintbit; -} - -static unsigned int bfin_gpio_irq_startup(unsigned int irq) -{ - u32 gpionr = irq_to_gpio(irq); - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - - if (pint_val == IRQ_NOT_AVAIL) { - printk(KERN_ERR - "GPIO IRQ %d :Not in PINT Assign table " - "Reconfigure Interrupt to Port Assignemt\n", irq); - return -ENODEV; - } - - if (__test_and_set_bit(gpionr, gpio_enabled)) - bfin_gpio_irq_prepare(gpionr); - - bfin_gpio_unmask_irq(irq); - - return 0; -} +#ifdef CONFIG_PM -static void bfin_gpio_irq_shutdown(unsigned int irq) +static int bfin_gpio_set_wake(struct irq_data *d, unsigned int state) { - u32 gpionr = irq_to_gpio(irq); - - bfin_gpio_mask_irq(irq); - __clear_bit(gpionr, gpio_enabled); - bfin_gpio_irq_free(gpionr); + return bfin_gpio_pm_wakeup_ctrl(irq_to_gpio(d->irq), state); } -static int bfin_gpio_irq_type(unsigned int irq, unsigned int type) -{ - 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); - 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 (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; - } +#else - 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_clear = pintbit; /* high or rising edge denoted by zero */ +# define bfin_gpio_set_wake NULL - if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) - == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { - if (gpio_get_value(gpionr)) - pint[bank]->invert_set = pintbit; - else - pint[bank]->invert_clear = pintbit; - } +#endif - if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { - pint[bank]->edge_set = pintbit; - bfin_set_irq_handler(irq, handle_edge_irq); - } else { - pint[bank]->edge_clear = pintbit; - bfin_set_irq_handler(irq, handle_level_irq); - } +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, +}; - return 0; -} +#endif #ifdef CONFIG_PM -u32 pint_saved_masks[NR_PINT_SYS_IRQS]; -u32 pint_wakeup_masks[NR_PINT_SYS_IRQS]; - -int bfin_gpio_set_wake(unsigned int irq, unsigned int state) -{ - u32 pint_irq; - u32 pint_val = irq2pint_lut[irq - SYS_IRQS]; - u32 bank = PINT_2_BANK(pint_val); - u32 pintbit = PINT_BIT(pint_val); - - switch (bank) { - case 0: - pint_irq = IRQ_PINT0; - break; - case 2: - pint_irq = IRQ_PINT2; - break; - case 3: - pint_irq = IRQ_PINT3; - break; - case 1: - pint_irq = IRQ_PINT1; - break; - default: - return -EINVAL; - } - - bfin_internal_set_wake(pint_irq, state); - - if (state) - pint_wakeup_masks[bank] |= pintbit; - else - pint_wakeup_masks[bank] &= ~pintbit; - return 0; -} +#ifdef SEC_GCTL +static u32 save_pint_sec_ctl[NR_PINT_SYS_IRQS]; -u32 bfin_pm_setup(void) +static int sec_suspend(void) { - u32 val, i; - - for (i = 0; i < NR_PINT_SYS_IRQS; i++) { - val = pint[i]->mask_clear; - pint_saved_masks[i] = val; - if (val ^ pint_wakeup_masks[i]) { - pint[i]->mask_clear = val; - pint[i]->mask_set = pint_wakeup_masks[i]; - } - } + 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; } -void bfin_pm_restore(void) -{ - u32 i, val; - - for (i = 0; i < NR_PINT_SYS_IRQS; i++) { - val = pint_saved_masks[i]; - if (val ^ pint_wakeup_masks[i]) { - pint[i]->mask_clear = pint[i]->mask_clear; - pint[i]->mask_set = val; - } - } -} -#endif - -static void bfin_demux_gpio_irq(unsigned int inta_irq, - struct irq_desc *desc) +static void sec_resume(void) { - u32 bank, pint_val; - u32 request, irq; + u32 bank; - switch (inta_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; - bfin_handle_irq(irq); - } - pint_val++; - request >>= 1; - } + 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 -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) +void init_exception_vectors(void) { /* cannot program in software: * evt0 - emulation (jtag) @@ -1103,6 +969,7 @@ 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. @@ -1112,15 +979,15 @@ int __init init_arch_irq(void) { int irq; unsigned long ilat = 0; + /* Disable all the peripheral intrs - page 4-29 HW Ref manual */ -#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \ - || defined(BF538_FAMILY) || defined(CONFIG_BF51x) +#ifdef SIC_IMASK0 bfin_write_SIC_IMASK0(SIC_UNMASK_ALL); bfin_write_SIC_IMASK1(SIC_UNMASK_ALL); -# ifdef CONFIG_BF54x +# ifdef SIC_IMASK2 bfin_write_SIC_IMASK2(SIC_UNMASK_ALL); # endif -# ifdef CONFIG_SMP +# if defined(CONFIG_SMP) || defined(CONFIG_ICC) bfin_write_SICB_IMASK0(SIC_UNMASK_ALL); bfin_write_SICB_IMASK1(SIC_UNMASK_ALL); # endif @@ -1130,39 +997,19 @@ int __init init_arch_irq(void) local_irq_disable(); -#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) - /* Clear EMAC Interrupt Status bits so we can demux it later */ - bfin_write_EMAC_SYSTAT(-1); -#endif - -#ifdef 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); + irq_set_chip(irq, &bfin_core_irqchip); else - set_irq_chip(irq, &bfin_internal_irqchip); + irq_set_chip(irq, &bfin_internal_irqchip); switch (irq) { -#if defined(CONFIG_BF53x) +#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: -# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)) - case IRQ_MAC_RX: -# endif -#elif defined(CONFIG_BF54x) - case IRQ_PINT0: - case IRQ_PINT1: - case IRQ_PINT2: - case IRQ_PINT3: #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x) case IRQ_PORTF_INTA: case IRQ_PORTG_INTA: @@ -1171,78 +1018,65 @@ int __init init_arch_irq(void) case IRQ_PROG0_INTA: case IRQ_PROG1_INTA: case IRQ_PROG2_INTA: -#elif defined(CONFIG_BF538) || defined(CONFIG_BF539) +#elif defined(BF538_FAMILY) 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_chained_handler(irq, bfin_demux_error_irq); + 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: - set_irq_chained_handler(irq, bfin_demux_mac_status_irq); + irq_set_chained_handler(irq, + bfin_demux_mac_status_irq); break; #endif -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) || defined(CONFIG_ICC) case IRQ_SUPPLE_0: case IRQ_SUPPLE_1: - set_irq_handler(irq, handle_percpu_irq); + irq_set_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; + irq_set_handler(irq, handle_percpu_irq); # else - set_irq_handler(irq, handle_simple_irq); - break; + irq_set_handler(irq, handle_simple_irq); # endif + break; #endif #ifdef CONFIG_TICKSOURCE_GPTMR0 case IRQ_TIMER0: - set_irq_handler(irq, handle_simple_irq); + irq_set_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); +#ifdef CONFIG_IPIPE + irq_set_handler(irq, handle_level_irq); +#else + irq_set_handler(irq, handle_simple_irq); +#endif break; -#endif /* !CONFIG_IPIPE */ } } -#ifdef BF537_GENERIC_ERROR_INT_DEMUX - 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 + init_mach_irq(); -#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE) +#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, + 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++) - set_irq_chip_and_handler(irq, &bfin_gpio_irqchip, + irq_set_chip_and_handler(irq, &bfin_gpio_irqchip, handle_level_irq); - +#endif bfin_write_IMASK(0); CSYNC(); ilat = bfin_read_ILAT(); @@ -1260,8 +1094,9 @@ int __init init_arch_irq(void) /* 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; + 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 @@ -1285,60 +1120,146 @@ int __init init_arch_irq(void) #else bfin_write_SIC_IWR(IWR_DISABLE_ALL); #endif - return 0; } #ifdef CONFIG_DO_IRQ_L1 __attribute__((l1_text)) #endif -void do_irq(int vec, struct pt_regs *fp) +static int vec_to_irq(int vec) { - if (vec == EVT_IVTMR_P) { - vec = IRQ_CORETMR; - } else { - struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst; - struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop; -#if defined(SIC_ISR0) - unsigned long sic_status[3]; - - if (smp_processor_id()) { + 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(); - } -# ifdef SIC_ISR2 - sic_status[2] = bfin_read_SIC_ISR2() & bfin_read_SIC_IMASK2(); + /* 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 - for (;; ivg++) { - if (ivg >= ivg_stop) { - atomic_inc(&num_spurious); - return; - } - if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag) - break; - } + } 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 - unsigned long sic_status; + if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag) +#endif + return ivg->irqno; + } +} - sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR(); +#else /* SEC_GCTL */ - for (;; ivg++) { - if (ivg >= ivg_stop) { - atomic_inc(&num_spurious); - return; - } else if (sic_status & ivg->isrflag) - break; - } +/* + * 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 - vec = ivg->irqno; + } 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); + } } - asm_do_IRQ(vec, fp); + + 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 @@ -1350,6 +1271,10 @@ 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) { @@ -1360,6 +1285,7 @@ int __ipipe_get_irq_priority(unsigned irq) } } } +#endif return IVG15; } @@ -1372,44 +1298,11 @@ 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) - unsigned long sic_status[3]; + int irq, s = 0; - 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; - } + irq = vec_to_irq(vec); + if (irq == -1) + return 0; if (irq == IRQ_SYSTMR) { #if !defined(CONFIG_GENERIC_CLOCKEVENTS) || defined(CONFIG_TICKSOURCE_GPTMR0) @@ -1424,6 +1317,21 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs) __raw_get_cpu_var(__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(); @@ -1433,6 +1341,24 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs) __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) { |