diff options
Diffstat (limited to 'arch/sparc64/kernel/irq.c')
| -rw-r--r-- | arch/sparc64/kernel/irq.c | 131 |
1 files changed, 122 insertions, 9 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index a36f8dd0c02..e60d283f60b 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -1,7 +1,6 @@ -/* $Id: irq.c,v 1.114 2002/01/11 08:45:38 davem Exp $ - * irq.c: UltraSparc IRQ handling/init/registry. +/* irq.c: UltraSparc IRQ handling/init/registry. * - * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz) */ @@ -43,6 +42,7 @@ #include <asm/cpudata.h> #include <asm/auxio.h> #include <asm/head.h> +#include <asm/hypervisor.h> /* UPA nodes send interrupt packet to UltraSparc with first data reg * value low 5 (7 on Starfire) bits holding the IRQ identifier being @@ -380,6 +380,76 @@ static void sun4v_irq_end(unsigned int virt_irq) } } +static void sun4v_virq_enable(unsigned int virt_irq) +{ + struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); + unsigned int ino = bucket - &ivector_table[0]; + + if (likely(bucket)) { + unsigned long cpuid, dev_handle, dev_ino; + int err; + + cpuid = irq_choose_cpu(virt_irq); + + dev_handle = ino & IMAP_IGN; + dev_ino = ino & IMAP_INO; + + err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid); + if (err != HV_EOK) + printk("sun4v_vintr_set_target(%lx,%lx,%lu): " + "err(%d)\n", + dev_handle, dev_ino, cpuid, err); + err = sun4v_vintr_set_state(dev_handle, dev_ino, + HV_INTR_ENABLED); + if (err != HV_EOK) + printk("sun4v_vintr_set_state(%lx,%lx," + "HV_INTR_ENABLED): err(%d)\n", + dev_handle, dev_ino, err); + } +} + +static void sun4v_virq_disable(unsigned int virt_irq) +{ + struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); + unsigned int ino = bucket - &ivector_table[0]; + + if (likely(bucket)) { + unsigned long dev_handle, dev_ino; + int err; + + dev_handle = ino & IMAP_IGN; + dev_ino = ino & IMAP_INO; + + err = sun4v_vintr_set_state(dev_handle, dev_ino, + HV_INTR_DISABLED); + if (err != HV_EOK) + printk("sun4v_vintr_set_state(%lx,%lx," + "HV_INTR_DISABLED): err(%d)\n", + dev_handle, dev_ino, err); + } +} + +static void sun4v_virq_end(unsigned int virt_irq) +{ + struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); + unsigned int ino = bucket - &ivector_table[0]; + + if (likely(bucket)) { + unsigned long dev_handle, dev_ino; + int err; + + dev_handle = ino & IMAP_IGN; + dev_ino = ino & IMAP_INO; + + err = sun4v_vintr_set_state(dev_handle, dev_ino, + HV_INTR_STATE_IDLE); + if (err != HV_EOK) + printk("sun4v_vintr_set_state(%lx,%lx," + "HV_INTR_STATE_IDLE): err(%d)\n", + dev_handle, dev_ino, err); + } +} + static void run_pre_handler(unsigned int virt_irq) { struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq); @@ -434,6 +504,21 @@ static struct irq_chip sun4v_msi = { }; #endif +static struct irq_chip sun4v_virq = { + .typename = "vsun4v", + .enable = sun4v_virq_enable, + .disable = sun4v_virq_disable, + .end = sun4v_virq_end, +}; + +static struct irq_chip sun4v_virq_ack = { + .typename = "vsun4v+ack", + .enable = sun4v_virq_enable, + .disable = sun4v_virq_disable, + .ack = run_pre_handler, + .end = sun4v_virq_end, +}; + void irq_install_pre_handler(int virt_irq, void (*func)(unsigned int, void *, void *), void *arg1, void *arg2) @@ -447,7 +532,8 @@ void irq_install_pre_handler(int virt_irq, chip = get_irq_chip(virt_irq); if (chip == &sun4u_irq_ack || - chip == &sun4v_irq_ack + chip == &sun4v_irq_ack || + chip == &sun4v_virq_ack #ifdef CONFIG_PCI_MSI || chip == &sun4v_msi #endif @@ -455,7 +541,9 @@ void irq_install_pre_handler(int virt_irq, return; chip = (chip == &sun4u_irq ? - &sun4u_irq_ack : &sun4v_irq_ack); + &sun4u_irq_ack : + (chip == &sun4v_irq ? + &sun4v_irq_ack : &sun4v_virq_ack)); set_irq_chip(virt_irq, chip); } @@ -492,19 +580,18 @@ out: return bucket->virt_irq; } -unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino) +static unsigned int sun4v_build_common(unsigned long sysino, + struct irq_chip *chip) { struct ino_bucket *bucket; struct irq_handler_data *data; - unsigned long sysino; BUG_ON(tlb_type != hypervisor); - sysino = sun4v_devino_to_sysino(devhandle, devino); bucket = &ivector_table[sysino]; if (!bucket->virt_irq) { bucket->virt_irq = virt_irq_alloc(__irq(bucket)); - set_irq_chip(bucket->virt_irq, &sun4v_irq); + set_irq_chip(bucket->virt_irq, chip); } data = get_irq_chip_data(bucket->virt_irq); @@ -529,6 +616,32 @@ out: return bucket->virt_irq; } +unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino) +{ + unsigned long sysino = sun4v_devino_to_sysino(devhandle, devino); + + return sun4v_build_common(sysino, &sun4v_irq); +} + +unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino) +{ + unsigned long sysino, hv_err; + + BUG_ON(devhandle & ~IMAP_IGN); + BUG_ON(devino & ~IMAP_INO); + + sysino = devhandle | devino; + + hv_err = sun4v_vintr_set_cookie(devhandle, devino, sysino); + if (hv_err) { + prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] " + "err=%lu\n", devhandle, devino, hv_err); + prom_halt(); + } + + return sun4v_build_common(sysino, &sun4v_virq); +} + #ifdef CONFIG_PCI_MSI unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p, unsigned int msi_start, unsigned int msi_end) |