config BASLER_EXCITE
bool "Basler eXcite smart camera"
+ select CEVT_R4K
select DMA_COHERENT
select HW_HAS_PCI
select IRQ_CPU
config BCM47XX
bool "BCM47XX based boards"
+ select CEVT_R4K
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_CPU
config MIPS_COBALT
bool "Cobalt Server"
+ select CEVT_R4K
select DMA_NONCOHERENT
select HW_HAS_PCI
select I8253
config MACH_DECSTATION
bool "DECstations"
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select NO_IOPORT
select IRQ_CPU
select ARC
select ARC32
select ARCH_MAY_HAVE_PC_FDC
+ select CEVT_R4K
select GENERIC_ISA_DMA
select IRQ_CPU
select I8253
config LASAT
bool "LASAT Networks platforms"
+ select CEVT_R4K
select DMA_NONCOHERENT
select SYS_HAS_EARLY_PRINTK
select HW_HAS_PCI
config LEMOTE_FULONG
bool "Lemote Fulong mini-PC"
select ARCH_SPARSEMEM_ENABLE
+ select CEVT_R4K
select SYS_HAS_CPU_LOONGSON2
select DMA_NONCOHERENT
select BOOT_ELF32
config MIPS_ATLAS
bool "MIPS Atlas board"
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select SYS_HAS_EARLY_PRINTK
select IRQ_CPU
bool "MIPS Malta board"
select ARCH_MAY_HAVE_PC_FDC
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select GENERIC_ISA_DMA
select IRQ_CPU
config MIPS_SEAD
bool "MIPS SEAD board"
+ select CEVT_R4K
select IRQ_CPU
select DMA_NONCOHERENT
select SYS_HAS_EARLY_PRINTK
config MIPS_SIM
bool 'MIPS simulator (MIPSsim)'
+ select CEVT_R4K
select DMA_NONCOHERENT
select SYS_HAS_EARLY_PRINTK
select IRQ_CPU
config MARKEINS
bool "NEC EMMA2RH Mark-eins"
+ select CEVT_R4K
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_CPU
config MACH_VR41XX
bool "NEC VR4100 series based machines"
+ select CEVT_R4K
select SYS_HAS_CPU_VR41XX
select GENERIC_HARDIRQS_NO__DO_IRQ
config PMC_YOSEMITE
bool "PMC-Sierra Yosemite eval board"
+ select CEVT_R4K
select DMA_COHERENT
select HW_HAS_PCI
select IRQ_CPU
config QEMU
bool "Qemu"
+ select CEVT_R4K
select DMA_COHERENT
select GENERIC_ISA_DMA
select HAVE_STD_PC_SERIAL_PORT
select ARC
select ARC32
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select HW_HAS_EISA
select I8253
select ARC
select ARC32
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select HW_HAS_PCI
select IRQ_CPU
select ARC32 if CPU_LITTLE_ENDIAN
select ARCH_MAY_HAVE_PC_FDC
select BOOT_ELF32
+ select CEVT_R4K
select DMA_NONCOHERENT
select GENERIC_ISA_DMA
select HW_HAS_EISA
config TOSHIBA_RBTX4927
bool "Toshiba RBTX49[23]7 board"
+ select CEVT_R4K
select DMA_NONCOHERENT
select HAS_TXX9_SERIAL
select HW_HAS_PCI
config TOSHIBA_RBTX4938
bool "Toshiba RBTX4938 board"
+ select CEVT_R4K
select DMA_NONCOHERENT
select HAS_TXX9_SERIAL
select HW_HAS_PCI
config WR_PPMC
bool "Wind River PPMC board"
+ select CEVT_R4K
select IRQ_CPU
select BOOT_ELF32
select DMA_NONCOHERENT
config BOOT_RAW
bool
+config CEVT_R4K
+ bool
+
config CFE
bool
config SOC_AU1X00
bool
select 64BIT_PHYS_ADDR
+ select CEVT_R4K
select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
ptrace.o reset.o semaphore.o setup.o signal.o syscall.o \
time.o topology.o traps.o unaligned.o
+obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o
+
binfmt_irix-objs := irixelf.o irixinv.o irixioctl.o irixsig.o \
irix5sys.o sysirix.o
--- /dev/null
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 MIPS Technologies, Inc.
+ * Copyright (C) 2007 Ralf Baechle <ralf@linux-mips.org>
+ */
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+#include <linux/percpu.h>
+
+#include <asm/time.h>
+
+static int mips_next_event(unsigned long delta,
+ struct clock_event_device *evt)
+{
+ unsigned int cnt;
+ int res;
+
+#ifdef CONFIG_MIPS_MT_SMTC
+ {
+ unsigned long flags, vpflags;
+ local_irq_save(flags);
+ vpflags = dvpe();
+#endif
+ cnt = read_c0_count();
+ cnt += delta;
+ write_c0_compare(cnt);
+ res = ((long)(read_c0_count() - cnt ) > 0) ? -ETIME : 0;
+#ifdef CONFIG_MIPS_MT_SMTC
+ evpe(vpflags);
+ local_irq_restore(flags);
+ }
+#endif
+ return res;
+}
+
+static void mips_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evt)
+{
+ /* Nothing to do ... */
+}
+
+static DEFINE_PER_CPU(struct clock_event_device, mips_clockevent_device);
+static int cp0_timer_irq_installed;
+
+/*
+ * Timer ack for an R4k-compatible timer of a known frequency.
+ */
+static void c0_timer_ack(void)
+{
+ write_c0_compare(read_c0_compare());
+}
+
+/*
+ * Possibly handle a performance counter interrupt.
+ * Return true if the timer interrupt should not be checked
+ */
+static inline int handle_perf_irq(int r2)
+{
+ /*
+ * The performance counter overflow interrupt may be shared with the
+ * timer interrupt (cp0_perfcount_irq < 0). If it is and a
+ * performance counter has overflowed (perf_irq() == IRQ_HANDLED)
+ * and we can't reliably determine if a counter interrupt has also
+ * happened (!r2) then don't check for a timer interrupt.
+ */
+ return (cp0_perfcount_irq < 0) &&
+ perf_irq() == IRQ_HANDLED &&
+ !r2;
+}
+
+static irqreturn_t c0_compare_interrupt(int irq, void *dev_id)
+{
+ const int r2 = cpu_has_mips_r2;
+ struct clock_event_device *cd;
+ int cpu = smp_processor_id();
+
+ /*
+ * Suckage alert:
+ * Before R2 of the architecture there was no way to see if a
+ * performance counter interrupt was pending, so we have to run
+ * the performance counter interrupt handler anyway.
+ */
+ if (handle_perf_irq(r2))
+ goto out;
+
+ /*
+ * The same applies to performance counter interrupts. But with the
+ * above we now know that the reason we got here must be a timer
+ * interrupt. Being the paranoiacs we are we check anyway.
+ */
+ if (!r2 || (read_c0_cause() & (1 << 30))) {
+ c0_timer_ack();
+#ifdef CONFIG_MIPS_MT_SMTC
+ if (cpu_data[cpu].vpe_id)
+ goto out;
+ cpu = 0;
+#endif
+ cd = &per_cpu(mips_clockevent_device, cpu);
+ cd->event_handler(cd);
+ }
+
+out:
+ return IRQ_HANDLED;
+}
+
+static struct irqaction c0_compare_irqaction = {
+ .handler = c0_compare_interrupt,
+#ifdef CONFIG_MIPS_MT_SMTC
+ .flags = IRQF_DISABLED,
+#else
+ .flags = IRQF_DISABLED | IRQF_PERCPU,
+#endif
+ .name = "timer",
+};
+
+#ifdef CONFIG_MIPS_MT_SMTC
+DEFINE_PER_CPU(struct clock_event_device, smtc_dummy_clockevent_device);
+
+static void smtc_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *evt)
+{
+}
+
+static void mips_broadcast(cpumask_t mask)
+{
+ unsigned int cpu;
+
+ for_each_cpu_mask(cpu, mask)
+ smtc_send_ipi(cpu, SMTC_CLOCK_TICK, 0);
+}
+
+static void setup_smtc_dummy_clockevent_device(void)
+{
+ //uint64_t mips_freq = mips_hpt_^frequency;
+ unsigned int cpu = smp_processor_id();
+ struct clock_event_device *cd;
+
+ cd = &per_cpu(smtc_dummy_clockevent_device, cpu);
+
+ cd->name = "SMTC";
+ cd->features = CLOCK_EVT_FEAT_DUMMY;
+
+ /* Calculate the min / max delta */
+ cd->mult = 0; //div_sc((unsigned long) mips_freq, NSEC_PER_SEC, 32);
+ cd->shift = 0; //32;
+ cd->max_delta_ns = 0; //clockevent_delta2ns(0x7fffffff, cd);
+ cd->min_delta_ns = 0; //clockevent_delta2ns(0x30, cd);
+
+ cd->rating = 200;
+ cd->irq = 17; //-1;
+// if (cpu)
+// cd->cpumask = CPU_MASK_ALL; // cpumask_of_cpu(cpu);
+// else
+ cd->cpumask = cpumask_of_cpu(cpu);
+
+ cd->set_mode = smtc_set_mode;
+
+ cd->broadcast = mips_broadcast;
+
+ clockevents_register_device(cd);
+}
+#endif
+
+static void mips_event_handler(struct clock_event_device *dev)
+{
+}
+
+/*
+ * FIXME: This doesn't hold for the relocated E9000 compare interrupt.
+ */
+static int c0_compare_int_pending(void)
+{
+ return (read_c0_cause() >> cp0_compare_irq) & 0x100;
+}
+
+static int c0_compare_int_usable(void)
+{
+ const unsigned int delta = 0x300000;
+ unsigned int cnt;
+
+ /*
+ * IP7 already pending? Try to clear it by acking the timer.
+ */
+ if (c0_compare_int_pending()) {
+ write_c0_compare(read_c0_compare());
+ irq_disable_hazard();
+ if (c0_compare_int_pending())
+ return 0;
+ }
+
+ cnt = read_c0_count();
+ cnt += delta;
+ write_c0_compare(cnt);
+
+ while ((long)(read_c0_count() - cnt) <= 0)
+ ; /* Wait for expiry */
+
+ if (!c0_compare_int_pending())
+ return 0;
+
+ write_c0_compare(read_c0_compare());
+ irq_disable_hazard();
+ if (c0_compare_int_pending())
+ return 0;
+
+ /*
+ * Feels like a real count / compare timer.
+ */
+ return 1;
+}
+
+void __cpuinit mips_clockevent_init(void)
+{
+ uint64_t mips_freq = mips_hpt_frequency;
+ unsigned int cpu = smp_processor_id();
+ struct clock_event_device *cd;
+ unsigned int irq = MIPS_CPU_IRQ_BASE + 7;
+
+ if (!cpu_has_counter)
+ return;
+
+#ifdef CONFIG_MIPS_MT_SMTC
+ setup_smtc_dummy_clockevent_device();
+
+ /*
+ * On SMTC we only register VPE0's compare interrupt as clockevent
+ * device.
+ */
+ if (cpu)
+ return;
+#endif
+
+ if (!c0_compare_int_usable())
+ return;
+
+ cd = &per_cpu(mips_clockevent_device, cpu);
+
+ cd->name = "MIPS";
+ cd->features = CLOCK_EVT_FEAT_ONESHOT;
+
+ /* Calculate the min / max delta */
+ cd->mult = div_sc((unsigned long) mips_freq, NSEC_PER_SEC, 32);
+ cd->shift = 32;
+ cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
+ cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
+
+ cd->rating = 300;
+ cd->irq = irq;
+#ifdef CONFIG_MIPS_MT_SMTC
+ cd->cpumask = CPU_MASK_ALL;
+#else
+ cd->cpumask = cpumask_of_cpu(cpu);
+#endif
+ cd->set_next_event = mips_next_event;
+ cd->set_mode = mips_set_mode;
+ cd->event_handler = mips_event_handler;
+
+ clockevents_register_device(cd);
+
+ if (!cp0_timer_irq_installed) {
+#ifdef CONFIG_MIPS_MT_SMTC
+#define CPUCTR_IMASKBIT (0x100 << cp0_compare_irq)
+ setup_irq_smtc(irq, &c0_compare_irqaction, CPUCTR_IMASKBIT);
+#else
+ setup_irq(irq, &c0_compare_irqaction);
+#endif /* CONFIG_MIPS_MT_SMTC */
+ cp0_timer_irq_installed = 1;
+ }
+}
return 0;
}
-/*
- * Timer ack for an R4k-compatible timer of a known frequency.
- */
-static void c0_timer_ack(void)
-{
- write_c0_compare(read_c0_compare());
-}
-
/*
* High precision timer functions for a R4k-compatible timer.
*/
EXPORT_SYMBOL(perf_irq);
-/*
- * Timer interrupt
- */
-int cp0_compare_irq;
-
-/*
- * Performance counter IRQ or -1 if shared with timer
- */
-int cp0_perfcount_irq;
-EXPORT_SYMBOL_GPL(cp0_perfcount_irq);
-
-/*
- * Possibly handle a performance counter interrupt.
- * Return true if the timer interrupt should not be checked
- */
-static inline int handle_perf_irq(int r2)
-{
- /*
- * The performance counter overflow interrupt may be shared with the
- * timer interrupt (cp0_perfcount_irq < 0). If it is and a
- * performance counter has overflowed (perf_irq() == IRQ_HANDLED)
- * and we can't reliably determine if a counter interrupt has also
- * happened (!r2) then don't check for a timer interrupt.
- */
- return (cp0_perfcount_irq < 0) &&
- perf_irq() == IRQ_HANDLED &&
- !r2;
-}
-
/*
* time_init() - it does the following things.
*
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
-static int mips_next_event(unsigned long delta,
- struct clock_event_device *evt)
-{
- unsigned int cnt;
- int res;
-
-#ifdef CONFIG_MIPS_MT_SMTC
- {
- unsigned long flags, vpflags;
- local_irq_save(flags);
- vpflags = dvpe();
-#endif
- cnt = read_c0_count();
- cnt += delta;
- write_c0_compare(cnt);
- res = ((long)(read_c0_count() - cnt ) > 0) ? -ETIME : 0;
-#ifdef CONFIG_MIPS_MT_SMTC
- evpe(vpflags);
- local_irq_restore(flags);
- }
-#endif
- return res;
-}
-
-static void mips_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
-{
- /* Nothing to do ... */
-}
-
-static DEFINE_PER_CPU(struct clock_event_device, mips_clockevent_device);
-static int cp0_timer_irq_installed;
-
-static irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
- const int r2 = cpu_has_mips_r2;
- struct clock_event_device *cd;
- int cpu = smp_processor_id();
-
- /*
- * Suckage alert:
- * Before R2 of the architecture there was no way to see if a
- * performance counter interrupt was pending, so we have to run
- * the performance counter interrupt handler anyway.
- */
- if (handle_perf_irq(r2))
- goto out;
-
- /*
- * The same applies to performance counter interrupts. But with the
- * above we now know that the reason we got here must be a timer
- * interrupt. Being the paranoiacs we are we check anyway.
- */
- if (!r2 || (read_c0_cause() & (1 << 30))) {
- c0_timer_ack();
-#ifdef CONFIG_MIPS_MT_SMTC
- if (cpu_data[cpu].vpe_id)
- goto out;
- cpu = 0;
-#endif
- cd = &per_cpu(mips_clockevent_device, cpu);
- cd->event_handler(cd);
- }
-
-out:
- return IRQ_HANDLED;
-}
-
-static struct irqaction timer_irqaction = {
- .handler = timer_interrupt,
-#ifdef CONFIG_MIPS_MT_SMTC
- .flags = IRQF_DISABLED,
-#else
- .flags = IRQF_DISABLED | IRQF_PERCPU,
-#endif
- .name = "timer",
-};
-
static void __init init_mips_clocksource(void)
{
u64 temp;
{
}
-int dummycnt[NR_CPUS];
-
static void mips_broadcast(cpumask_t mask)
{
unsigned int cpu;
}
#endif
-static void mips_event_handler(struct clock_event_device *dev)
-{
-}
-
-/*
- * FIXME: This doesn't hold for the relocated E9000 compare interrupt.
- */
-static int c0_compare_int_pending(void)
-{
- return (read_c0_cause() >> cp0_compare_irq) & 0x100;
-}
-
-static int c0_compare_int_usable(void)
-{
- const unsigned int delta = 0x300000;
- unsigned int cnt;
-
- /*
- * IP7 already pending? Try to clear it by acking the timer.
- */
- if (c0_compare_int_pending()) {
- write_c0_compare(read_c0_compare());
- irq_disable_hazard();
- if (c0_compare_int_pending())
- return 0;
- }
-
- cnt = read_c0_count();
- cnt += delta;
- write_c0_compare(cnt);
-
- while ((long)(read_c0_count() - cnt) <= 0)
- ; /* Wait for expiry */
-
- if (!c0_compare_int_pending())
- return 0;
-
- write_c0_compare(read_c0_compare());
- irq_disable_hazard();
- if (c0_compare_int_pending())
- return 0;
-
- /*
- * Feels like a real count / compare timer.
- */
- return 1;
-}
-
-void __cpuinit mips_clockevent_init(void)
-{
- uint64_t mips_freq = mips_hpt_frequency;
- unsigned int cpu = smp_processor_id();
- struct clock_event_device *cd;
- unsigned int irq = MIPS_CPU_IRQ_BASE + 7;
-
- if (!cpu_has_counter)
- return;
-
-#ifdef CONFIG_MIPS_MT_SMTC
- setup_smtc_dummy_clockevent_device();
-
- /*
- * On SMTC we only register VPE0's compare interrupt as clockevent
- * device.
- */
- if (cpu)
- return;
-#endif
-
- if (!c0_compare_int_usable())
- return;
-
- cd = &per_cpu(mips_clockevent_device, cpu);
-
- cd->name = "MIPS";
- cd->features = CLOCK_EVT_FEAT_ONESHOT;
-
- /* Calculate the min / max delta */
- cd->mult = div_sc((unsigned long) mips_freq, NSEC_PER_SEC, 32);
- cd->shift = 32;
- cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
- cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
-
- cd->rating = 300;
- cd->irq = irq;
-#ifdef CONFIG_MIPS_MT_SMTC
- cd->cpumask = CPU_MASK_ALL;
-#else
- cd->cpumask = cpumask_of_cpu(cpu);
-#endif
- cd->set_next_event = mips_next_event;
- cd->set_mode = mips_set_mode;
- cd->event_handler = mips_event_handler;
-
- clockevents_register_device(cd);
-
- if (!cp0_timer_irq_installed) {
-#ifdef CONFIG_MIPS_MT_SMTC
-#define CPUCTR_IMASKBIT (0x100 << cp0_compare_irq)
- setup_irq_smtc(irq, &timer_irqaction, CPUCTR_IMASKBIT);
-#else
- setup_irq(irq, &timer_irqaction);
-#endif /* CONFIG_MIPS_MT_SMTC */
- cp0_timer_irq_installed = 1;
- }
-}
-
void __init time_init(void)
{
plat_time_init();
printk("Using %u.%03u MHz high precision timer.\n",
((mips_hpt_frequency + 500) / 1000) / 1000,
((mips_hpt_frequency + 500) / 1000) % 1000);
-
-#ifdef CONFIG_IRQ_CPU
- setup_irq(MIPS_CPU_IRQ_BASE + 7, &timer_irqaction);
-#endif
}
- /*
- * Call board specific timer interrupt setup.
- *
- * this pointer must be setup in machine setup routine.
- *
- * Even if a machine chooses to use a low-level timer interrupt,
- * it still needs to setup the timer_irqaction.
- * In that case, it might be better to set timer_irqaction.handler
- * to be NULL function so that we are sure the high-level code
- * is not invoked accidentally.
- */
- plat_timer_setup(&timer_irqaction);
-
init_mips_clocksource();
mips_clockevent_init();
}
extern void tlb_init(void);
extern void flush_tlb_handlers(void);
+/*
+ * Timer interrupt
+ */
+int cp0_compare_irq;
+
+/*
+ * Performance counter IRQ or -1 if shared with timer
+ */
+int cp0_perfcount_irq;
+EXPORT_SYMBOL_GPL(cp0_perfcount_irq);
+
void __init per_cpu_trap_init(void)
{
unsigned int cpu = smp_processor_id();
config PMC_MSP4200_EVAL
bool "PMC-Sierra MSP4200 Eval Board"
+ select CEVT_R4K
select IRQ_MSP_SLP
select HW_HAS_PCI
config PMC_MSP4200_GW
bool "PMC-Sierra MSP4200 VoIP Gateway"
+ select CEVT_R4K
select IRQ_MSP_SLP
select HW_HAS_PCI
config CASIO_E55
bool "CASIO CASSIOPEIA E-10/15/55/65"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select ISA
config IBM_WORKPAD
bool "IBM WorkPad z50"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select ISA
config NEC_CMBVR4133
bool "NEC CMB-VR4133"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select HW_HAS_PCI
config TANBAC_TB022X
bool "TANBAC VR4131 multichip module and TANBAC VR4131DIMM"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select HW_HAS_PCI
config VICTOR_MPC30X
bool "Victor MP-C303/304"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select HW_HAS_PCI
config ZAO_CAPCELLA
bool "ZAO Networks Capcella"
+ select CEVT_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select HW_HAS_PCI
/*
* Initialize the calling CPU's compare interrupt as clockevent device
*/
+#ifdef CONFIG_CEVT_R4K
extern void mips_clockevent_init(void);
+#else
+static inline void mips_clockevent_init(void)
+{
+}
+#endif
#endif /* _ASM_TIME_H */
git.samba.org / sfrench / cifs-2.6.git / commitdiff