From 6f50c83529ac1fa3444ff4be5f5b0bf3d76db678 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 9 Jul 2015 10:40:49 +0100 Subject: IRQCHIP: irq-mips-gic: Add support for CM3 64-bit timer irqs CM3 uses a 64-bit counter and compare registers so add support for them in the GIC counter interrupt. Signed-off-by: Markos Chandras Cc: Thomas Gleixner Cc: Jason Cooper Cc: Andrew Bresticker Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10648/ Signed-off-by: Ralf Baechle --- drivers/irqchip/irq-mips-gic.c | 33 ++++++++++++++++++++++++--------- 1 file changed, 24 insertions(+), 9 deletions(-) (limited to 'drivers/irqchip/irq-mips-gic.c') diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index d8db854afded..7d4616963b5a 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -140,6 +140,9 @@ cycle_t gic_read_count(void) { unsigned int hi, hi2, lo; + if (mips_cm_is64) + return (cycle_t)gic_read(GIC_REG(SHARED, GIC_SH_COUNTER)); + do { hi = gic_read32(GIC_REG(SHARED, GIC_SH_COUNTER_63_32)); lo = gic_read32(GIC_REG(SHARED, GIC_SH_COUNTER_31_00)); @@ -162,10 +165,14 @@ unsigned int gic_get_count_width(void) void gic_write_compare(cycle_t cnt) { - gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), - (int)(cnt >> 32)); - gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), - (int)(cnt & 0xffffffff)); + if (mips_cm_is64) { + gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE), cnt); + } else { + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), + (int)(cnt >> 32)); + gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), + (int)(cnt & 0xffffffff)); + } } void gic_write_cpu_compare(cycle_t cnt, int cpu) @@ -174,11 +181,16 @@ void gic_write_cpu_compare(cycle_t cnt, int cpu) local_irq_save(flags); - gic_write32(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), cpu); - gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_HI), - (int)(cnt >> 32)); - gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_LO), - (int)(cnt & 0xffffffff)); + gic_write(GIC_REG(VPE_LOCAL, GIC_VPE_OTHER_ADDR), cpu); + + if (mips_cm_is64) { + gic_write(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE), cnt); + } else { + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_HI), + (int)(cnt >> 32)); + gic_write32(GIC_REG(VPE_OTHER, GIC_VPE_COMPARE_LO), + (int)(cnt & 0xffffffff)); + } local_irq_restore(flags); } @@ -187,6 +199,9 @@ cycle_t gic_read_compare(void) { unsigned int hi, lo; + if (mips_cm_is64) + return (cycle_t)gic_read(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE)); + hi = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI)); lo = gic_read32(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO)); -- cgit v1.2.3