| Message ID | b9c61e0c893b6215531ea210e566c9057d28c792.1482265908.git.alistair.francis@xilinx.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 20 December 2016 at 22:42, Alistair Francis <alistair.francis@xilinx.com> wrote: > Add support for the read only regions in the ReadBase memory map. > > Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> > --- > > hw/timer/arm_generic_timer.c | 27 +++++++++++++++++++++++++++ > include/hw/timer/arm_generic_timer.h | 12 ++++++++++++ > 2 files changed, 39 insertions(+) > > diff --git a/hw/timer/arm_generic_timer.c b/hw/timer/arm_generic_timer.c > index da434a7..5392657 100644 > --- a/hw/timer/arm_generic_timer.c > +++ b/hw/timer/arm_generic_timer.c > @@ -100,6 +100,17 @@ static RegisterAccessInfo arm_gen_timer_regs_info[] = { > /* We don't model the CounterID registers either */ > }; > > +static RegisterAccessInfo arm_gen_timer_read_regs_info[] = { > + { .name = "CNTCV_READ_LOWER", > + .addr = A_CNTCV_READ_LOWER, .ro = 0xFFFF, > + .post_read = counter_low_value_postr, > + },{ .name = "CNTCV_READ_UPPER", > + .addr = A_CNTCV_READ_UPPER, .ro = 0xFFFF, > + .post_read = counter_high_value_postr, > + } Needs to support 64-bit reads too. > + /* We don't model the CounterID registers */ (same query about ID regs as in patch 1) > +}; > + > static void arm_gen_timer_reset(DeviceState *dev) > { > ARMGenTimer *s = ARM_GEN_TIMER(dev); > @@ -166,6 +177,7 @@ static void arm_gen_timer_init(Object *obj) > SysBusDevice *sbd = SYS_BUS_DEVICE(obj); > RegisterInfoArray *reg_array; > > + /* Create the ControlBase memory region */ > memory_region_init_io(&s->iomem, obj, &arm_gen_timer_ops, s, > TYPE_ARM_GEN_TIMER, R_ARM_GEN_TIMER_MAX * 4); > reg_array = > @@ -179,6 +191,21 @@ static void arm_gen_timer_init(Object *obj) > A_CNTCR, > ®_array->mem); > sysbus_init_mmio(sbd, &s->iomem); > + > + /* Create the ReadBase memory region */ > + memory_region_init_io(&s->iomem_read, obj, &arm_gen_timer_ops, s, > + TYPE_ARM_GEN_TIMER "-read", R_ARM_GEN_TIMER_READ_MAX * 4); checkpatch.pl complains that this line needs wrapping. > + reg_array = > + register_init_block32(DEVICE(obj), arm_gen_timer_read_regs_info, > + ARRAY_SIZE(arm_gen_timer_read_regs_info), > + s->regs_read_info, s->regs_read, > + &arm_gen_timer_ops, > + ARM_GEN_TIMER_ERR_DEBUG, > + R_ARM_GEN_TIMER_READ_MAX * 4); > + memory_region_add_subregion(&s->iomem_read, > + R_CNTCV_READ_LOWER, > + ®_array->mem); > + sysbus_init_mmio(sbd, &s->iomem_read); > } Otherwise this looks good. thanks -- PMM
diff --git a/hw/timer/arm_generic_timer.c b/hw/timer/arm_generic_timer.c index da434a7..5392657 100644 --- a/hw/timer/arm_generic_timer.c +++ b/hw/timer/arm_generic_timer.c @@ -100,6 +100,17 @@ static RegisterAccessInfo arm_gen_timer_regs_info[] = { /* We don't model the CounterID registers either */ }; +static RegisterAccessInfo arm_gen_timer_read_regs_info[] = { + { .name = "CNTCV_READ_LOWER", + .addr = A_CNTCV_READ_LOWER, .ro = 0xFFFF, + .post_read = counter_low_value_postr, + },{ .name = "CNTCV_READ_UPPER", + .addr = A_CNTCV_READ_UPPER, .ro = 0xFFFF, + .post_read = counter_high_value_postr, + } + /* We don't model the CounterID registers */ +}; + static void arm_gen_timer_reset(DeviceState *dev) { ARMGenTimer *s = ARM_GEN_TIMER(dev); @@ -166,6 +177,7 @@ static void arm_gen_timer_init(Object *obj) SysBusDevice *sbd = SYS_BUS_DEVICE(obj); RegisterInfoArray *reg_array; + /* Create the ControlBase memory region */ memory_region_init_io(&s->iomem, obj, &arm_gen_timer_ops, s, TYPE_ARM_GEN_TIMER, R_ARM_GEN_TIMER_MAX * 4); reg_array = @@ -179,6 +191,21 @@ static void arm_gen_timer_init(Object *obj) A_CNTCR, ®_array->mem); sysbus_init_mmio(sbd, &s->iomem); + + /* Create the ReadBase memory region */ + memory_region_init_io(&s->iomem_read, obj, &arm_gen_timer_ops, s, + TYPE_ARM_GEN_TIMER "-read", R_ARM_GEN_TIMER_READ_MAX * 4); + reg_array = + register_init_block32(DEVICE(obj), arm_gen_timer_read_regs_info, + ARRAY_SIZE(arm_gen_timer_read_regs_info), + s->regs_read_info, s->regs_read, + &arm_gen_timer_ops, + ARM_GEN_TIMER_ERR_DEBUG, + R_ARM_GEN_TIMER_READ_MAX * 4); + memory_region_add_subregion(&s->iomem_read, + R_CNTCV_READ_LOWER, + ®_array->mem); + sysbus_init_mmio(sbd, &s->iomem_read); } static void arm_gen_timer_class_init(ObjectClass *klass, void *data) diff --git a/include/hw/timer/arm_generic_timer.h b/include/hw/timer/arm_generic_timer.h index ae4319c..462ee5b 100644 --- a/include/hw/timer/arm_generic_timer.h +++ b/include/hw/timer/arm_generic_timer.h @@ -33,6 +33,7 @@ #define ARM_GEN_TIMER(obj) \ OBJECT_CHECK(ARMGenTimer, (obj), TYPE_ARM_GEN_TIMER) +/* ControlBase Memory Map */ REG32(CNTCR, 0x00) FIELD(CNTCR, EN, 0, 1) FIELD(CNTCR, HDBG, 1, 1) @@ -46,10 +47,18 @@ REG32(CNTFID0, 0x20) #define R_ARM_GEN_TIMER_MAX (R_CNTFID0 + 1) +/* Read Base Memory Map */ +REG32(CNTCV_READ_LOWER, 0x00) +REG32(CNTCV_READ_UPPER, 0x04) +/* We don't model the CounterID registers */ + +#define R_ARM_GEN_TIMER_READ_MAX (R_CNTCV_READ_UPPER + 1) + typedef struct ARMGenTimer { /* <private> */ SysBusDevice parent_obj; MemoryRegion iomem; + MemoryRegion iomem_read; /* <public> */ bool enabled; @@ -57,6 +66,9 @@ typedef struct ARMGenTimer { uint32_t regs[R_ARM_GEN_TIMER_MAX]; RegisterInfo regs_info[R_ARM_GEN_TIMER_MAX]; + + uint32_t regs_read[R_ARM_GEN_TIMER_READ_MAX]; + RegisterInfo regs_read_info[R_ARM_GEN_TIMER_READ_MAX]; } ARMGenTimer; #endif
Add support for the read only regions in the ReadBase memory map. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> --- hw/timer/arm_generic_timer.c | 27 +++++++++++++++++++++++++++ include/hw/timer/arm_generic_timer.h | 12 ++++++++++++ 2 files changed, 39 insertions(+)