[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v4 18/27] xen/arm: Create a fake timer node in dom0 device tree
Recreate the timer node and remove hypervisor specific interrupt. Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> --- Changes in v4: - Replace interrupt_t and set_interrupts respectively by gic_interrupt_t and set_interrupt_ppi - Use fdt_property_interrupts Changes in v3: - Use DT_MATCH_TIMER --- xen/arch/arm/domain_build.c | 66 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 87382d5..cda1e13 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -512,6 +512,67 @@ static int make_gic_node(const struct domain *d, void *fdt, return res; } +static int make_timer_node(const struct domain *d, void *fdt, + const struct dt_device_node *parent) +{ + static const struct dt_device_match timer_ids[] __initconst = + { + DT_MATCH_COMPATIBLE("arm,armv7-timer"), + DT_MATCH_COMPATIBLE("arm,armv8-timer"), + { /* sentinel */ }, + }; + struct dt_device_node *dev; + u32 len; + const void *compatible; + int res; + const struct dt_irq *irq; + gic_interrupt_t intrs[3]; + + DPRINT("Create timer node\n"); + + dev = dt_find_matching_node(NULL, timer_ids); + if ( !dev ) + { + dprintk(XENLOG_ERR, "Missing timer node in the device tree?\n"); + return -FDT_ERR_XEN(ENOENT); + } + + compatible = dt_get_property(dev, "compatible", &len); + if ( !compatible ) + { + dprintk(XENLOG_ERR, "Can't find compatible property for timer node\n"); + return -FDT_ERR_XEN(ENOENT); + } + + res = fdt_begin_node(fdt, "timer"); + if ( res ) + return res; + + res = fdt_property(fdt, "compatible", compatible, len); + if ( res ) + return res; + + irq = timer_dt_irq(TIMER_PHYS_SECURE_PPI); + DPRINT(" Secure interrupt %u\n", irq->irq); + set_interrupt_ppi(intrs[0], irq->irq, 0xf, irq->type); + + irq = timer_dt_irq(TIMER_PHYS_NONSECURE_PPI); + DPRINT(" Non secure interrupt %u\n", irq->irq); + set_interrupt_ppi(intrs[1], irq->irq, 0xf, irq->type); + + irq = timer_dt_irq(TIMER_VIRT_PPI); + DPRINT(" Virt interrupt %u\n", irq->irq); + set_interrupt_ppi(intrs[2], irq->irq, 0xf, irq->type); + + res = fdt_property_interrupts(fdt, intrs, 3); + if ( res ) + return res; + + res = fdt_end_node(fdt); + + return res; +} + /* Map the device in the domain */ static int map_device(struct domain *d, const struct dt_device_node *dev) { @@ -602,6 +663,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo, DT_MATCH_COMPATIBLE("arm,psci"), DT_MATCH_PATH("/cpus"), DT_MATCH_GIC, + DT_MATCH_TIMER, { /* sentinel */ }, }; const struct dt_device_node *child; @@ -679,6 +741,10 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo, res = make_gic_node(d, kinfo->fdt, np); if ( res ) return res; + + res = make_timer_node(d, kinfo->fdt, np); + if ( res ) + return res; } res = fdt_end_node(kinfo->fdt); -- 1.7.10.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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