[SPARC64]: Fix virq decomposition.
The dev_handle and dev_ino fields don't match up exactly to the traditional IMAP_IGN and IMAP_INO masks. So store them away in a table and look them up directly. Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -87,7 +87,11 @@ struct ino_bucket ivector_table[NUM_IVECS] __attribute__ ((aligned (SMP_CACHE_BY
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*/
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#define irq_work(__cpu) &(trap_block[(__cpu)].irq_worklist)
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static unsigned int virt_to_real_irq_table[NR_IRQS];
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static struct {
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unsigned int irq;
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unsigned int dev_handle;
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unsigned int dev_ino;
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} virt_to_real_irq_table[NR_IRQS];
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static unsigned char virt_irq_alloc(unsigned int real_irq)
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{
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@ -96,7 +100,7 @@ static unsigned char virt_irq_alloc(unsigned int real_irq)
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BUILD_BUG_ON(NR_IRQS >= 256);
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for (ent = 1; ent < NR_IRQS; ent++) {
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if (!virt_to_real_irq_table[ent])
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if (!virt_to_real_irq_table[ent].irq)
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break;
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}
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if (ent >= NR_IRQS) {
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@ -104,7 +108,7 @@ static unsigned char virt_irq_alloc(unsigned int real_irq)
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return 0;
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}
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virt_to_real_irq_table[ent] = real_irq;
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virt_to_real_irq_table[ent].irq = real_irq;
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return ent;
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}
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@ -117,8 +121,8 @@ static void virt_irq_free(unsigned int virt_irq)
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if (virt_irq >= NR_IRQS)
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return;
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real_irq = virt_to_real_irq_table[virt_irq];
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virt_to_real_irq_table[virt_irq] = 0;
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real_irq = virt_to_real_irq_table[virt_irq].irq;
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virt_to_real_irq_table[virt_irq].irq = 0;
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__bucket(real_irq)->virt_irq = 0;
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}
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@ -126,7 +130,7 @@ static void virt_irq_free(unsigned int virt_irq)
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static unsigned int virt_to_real_irq(unsigned char virt_irq)
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{
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return virt_to_real_irq_table[virt_irq];
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return virt_to_real_irq_table[virt_irq].irq;
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}
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/*
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@ -418,7 +422,6 @@ static void sun4v_irq_end(unsigned int virt_irq)
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static void sun4v_virq_enable(unsigned int virt_irq)
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{
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struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
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unsigned int ino = bucket - &ivector_table[0];
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if (likely(bucket)) {
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unsigned long cpuid, dev_handle, dev_ino;
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@ -426,8 +429,8 @@ static void sun4v_virq_enable(unsigned int virt_irq)
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cpuid = irq_choose_cpu(virt_irq);
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dev_handle = ino & IMAP_IGN;
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dev_ino = ino & IMAP_INO;
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dev_handle = virt_to_real_irq_table[virt_irq].dev_handle;
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dev_ino = virt_to_real_irq_table[virt_irq].dev_ino;
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err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
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if (err != HV_EOK)
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@ -452,7 +455,6 @@ static void sun4v_virq_enable(unsigned int virt_irq)
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static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
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{
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struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
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unsigned int ino = bucket - &ivector_table[0];
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if (likely(bucket)) {
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unsigned long cpuid, dev_handle, dev_ino;
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@ -460,8 +462,8 @@ static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
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cpuid = irq_choose_cpu(virt_irq);
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dev_handle = ino & IMAP_IGN;
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dev_ino = ino & IMAP_INO;
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dev_handle = virt_to_real_irq_table[virt_irq].dev_handle;
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dev_ino = virt_to_real_irq_table[virt_irq].dev_ino;
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err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
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if (err != HV_EOK)
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@ -474,14 +476,13 @@ static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
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static void sun4v_virq_disable(unsigned int virt_irq)
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{
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struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
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unsigned int ino = bucket - &ivector_table[0];
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if (likely(bucket)) {
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unsigned long dev_handle, dev_ino;
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int err;
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dev_handle = ino & IMAP_IGN;
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dev_ino = ino & IMAP_INO;
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dev_handle = virt_to_real_irq_table[virt_irq].dev_handle;
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dev_ino = virt_to_real_irq_table[virt_irq].dev_ino;
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err = sun4v_vintr_set_valid(dev_handle, dev_ino,
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HV_INTR_DISABLED);
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@ -495,7 +496,6 @@ static void sun4v_virq_disable(unsigned int virt_irq)
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static void sun4v_virq_end(unsigned int virt_irq)
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{
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struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
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unsigned int ino = bucket - &ivector_table[0];
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struct irq_desc *desc = irq_desc + virt_irq;
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if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
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@ -505,8 +505,8 @@ static void sun4v_virq_end(unsigned int virt_irq)
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unsigned long dev_handle, dev_ino;
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int err;
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dev_handle = ino & IMAP_IGN;
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dev_ino = ino & IMAP_INO;
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dev_handle = virt_to_real_irq_table[virt_irq].dev_handle;
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dev_ino = virt_to_real_irq_table[virt_irq].dev_ino;
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err = sun4v_vintr_set_state(dev_handle, dev_ino,
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HV_INTR_STATE_IDLE);
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@ -700,6 +700,7 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
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unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
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{
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unsigned long sysino, hv_err;
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unsigned int virq;
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BUG_ON(devhandle & devino);
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@ -713,7 +714,12 @@ unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
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prom_halt();
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}
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return sun4v_build_common(sysino, &sun4v_virq);
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virq = sun4v_build_common(sysino, &sun4v_virq);
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virt_to_real_irq_table[virq].dev_handle = devhandle;
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virt_to_real_irq_table[virq].dev_ino = devino;
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return virq;
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}
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#ifdef CONFIG_PCI_MSI
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