writel_relaxed(msg[1].address_lo, icu->base + subset->offset_clr_al);
}
-/* Start of area to be removed once all parent chips provide MSI parent */
-
-struct mvebu_icu_irq_data {
- struct mvebu_icu *icu;
- unsigned int icu_group;
- unsigned int type;
-};
-
-static void mvebu_icu_write_msg(struct msi_desc *desc, struct msi_msg *msg)
-{
- struct irq_data *d = irq_get_irq_data(desc->irq);
- struct mvebu_icu_msi_data *msi_data = platform_msi_get_host_data(d->domain);
- struct mvebu_icu_irq_data *icu_irqd = d->chip_data;
- struct mvebu_icu *icu = icu_irqd->icu;
- unsigned int icu_int;
-
- if (msg->address_lo || msg->address_hi) {
- /* One off initialization per domain */
- mvebu_icu_init(icu, msi_data, msg);
- /* Configure the ICU with irq number & type */
- icu_int = msg->data | ICU_INT_ENABLE;
- if (icu_irqd->type & IRQ_TYPE_EDGE_RISING)
- icu_int |= ICU_IS_EDGE;
- icu_int |= icu_irqd->icu_group << ICU_GROUP_SHIFT;
- } else {
- /* De-configure the ICU */
- icu_int = 0;
- }
-
- writel_relaxed(icu_int, icu->base + ICU_INT_CFG(d->hwirq));
-
- /*
- * The SATA unit has 2 ports, and a dedicated ICU entry per
- * port. The ahci sata driver supports only one irq interrupt
- * per SATA unit. To solve this conflict, we configure the 2
- * SATA wired interrupts in the south bridge into 1 GIC
- * interrupt in the north bridge. Even if only a single port
- * is enabled, if sata node is enabled, both interrupts are
- * configured (regardless of which port is actually in use).
- */
- if (d->hwirq == ICU_SATA0_ICU_ID || d->hwirq == ICU_SATA1_ICU_ID) {
- writel_relaxed(icu_int,
- icu->base + ICU_INT_CFG(ICU_SATA0_ICU_ID));
- writel_relaxed(icu_int,
- icu->base + ICU_INT_CFG(ICU_SATA1_ICU_ID));
- }
-}
-
-static struct irq_chip mvebu_icu_nsr_chip = {
- .name = "ICU-NSR",
- .irq_mask = irq_chip_mask_parent,
- .irq_unmask = irq_chip_unmask_parent,
- .irq_eoi = irq_chip_eoi_parent,
- .irq_set_type = irq_chip_set_type_parent,
- .irq_set_affinity = irq_chip_set_affinity_parent,
-};
-
-static struct irq_chip mvebu_icu_sei_chip = {
- .name = "ICU-SEI",
- .irq_ack = irq_chip_ack_parent,
- .irq_mask = irq_chip_mask_parent,
- .irq_unmask = irq_chip_unmask_parent,
- .irq_set_type = irq_chip_set_type_parent,
- .irq_set_affinity = irq_chip_set_affinity_parent,
-};
-
-static int
-mvebu_icu_irq_domain_translate(struct irq_domain *d, struct irq_fwspec *fwspec,
- unsigned long *hwirq, unsigned int *type)
-{
- unsigned int param_count = static_branch_unlikely(&legacy_bindings) ? 3 : 2;
- struct mvebu_icu_msi_data *msi_data = platform_msi_get_host_data(d);
- struct mvebu_icu *icu = msi_data->icu;
-
- /* Check the count of the parameters in dt */
- if (WARN_ON(fwspec->param_count != param_count)) {
- dev_err(icu->dev, "wrong ICU parameter count %d\n",
- fwspec->param_count);
- return -EINVAL;
- }
-
- if (static_branch_unlikely(&legacy_bindings)) {
- *hwirq = fwspec->param[1];
- *type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
- if (fwspec->param[0] != ICU_GRP_NSR) {
- dev_err(icu->dev, "wrong ICU group type %x\n",
- fwspec->param[0]);
- return -EINVAL;
- }
- } else {
- *hwirq = fwspec->param[0];
- *type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
-
- /*
- * The ICU receives level interrupts. While the NSR are also
- * level interrupts, SEI are edge interrupts. Force the type
- * here in this case. Please note that this makes the interrupt
- * handling unreliable.
- */
- if (msi_data->subset_data->icu_group == ICU_GRP_SEI)
- *type = IRQ_TYPE_EDGE_RISING;
- }
-
- if (*hwirq >= ICU_MAX_IRQS) {
- dev_err(icu->dev, "invalid interrupt number %ld\n", *hwirq);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int
-mvebu_icu_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs, void *args)
-{
- int err;
- unsigned long hwirq;
- struct irq_fwspec *fwspec = args;
- struct mvebu_icu_msi_data *msi_data = platform_msi_get_host_data(domain);
- struct mvebu_icu *icu = msi_data->icu;
- struct mvebu_icu_irq_data *icu_irqd;
- struct irq_chip *chip = &mvebu_icu_nsr_chip;
-
- icu_irqd = kmalloc(sizeof(*icu_irqd), GFP_KERNEL);
- if (!icu_irqd)
- return -ENOMEM;
-
- err = mvebu_icu_irq_domain_translate(domain, fwspec, &hwirq,
- &icu_irqd->type);
- if (err) {
- dev_err(icu->dev, "failed to translate ICU parameters\n");
- goto free_irqd;
- }
-
- if (static_branch_unlikely(&legacy_bindings))
- icu_irqd->icu_group = fwspec->param[0];
- else
- icu_irqd->icu_group = msi_data->subset_data->icu_group;
- icu_irqd->icu = icu;
-
- err = platform_msi_device_domain_alloc(domain, virq, nr_irqs);
- if (err) {
- dev_err(icu->dev, "failed to allocate ICU interrupt in parent domain\n");
- goto free_irqd;
- }
-
- /* Make sure there is no interrupt left pending by the firmware */
- err = irq_set_irqchip_state(virq, IRQCHIP_STATE_PENDING, false);
- if (err)
- goto free_msi;
-
- if (icu_irqd->icu_group == ICU_GRP_SEI)
- chip = &mvebu_icu_sei_chip;
-
- err = irq_domain_set_hwirq_and_chip(domain, virq, hwirq,
- chip, icu_irqd);
- if (err) {
- dev_err(icu->dev, "failed to set the data to IRQ domain\n");
- goto free_msi;
- }
-
- return 0;
-
-free_msi:
- platform_msi_device_domain_free(domain, virq, nr_irqs);
-free_irqd:
- kfree(icu_irqd);
- return err;
-}
-
-static void
-mvebu_icu_irq_domain_free(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs)
-{
- struct irq_data *d = irq_get_irq_data(virq);
- struct mvebu_icu_irq_data *icu_irqd = d->chip_data;
-
- kfree(icu_irqd);
-
- platform_msi_device_domain_free(domain, virq, nr_irqs);
-}
-
-static const struct irq_domain_ops mvebu_icu_domain_ops = {
- .translate = mvebu_icu_irq_domain_translate,
- .alloc = mvebu_icu_irq_domain_alloc,
- .free = mvebu_icu_irq_domain_free,
-};
-
-/* End of removal area */
-
static int mvebu_icu_msi_init(struct irq_domain *domain, struct msi_domain_info *info,
unsigned int virq, irq_hw_number_t hwirq, msi_alloc_info_t *arg)
{
static int mvebu_icu_subset_probe(struct platform_device *pdev)
{
+ const struct msi_domain_template *tmpl;
struct mvebu_icu_msi_data *msi_data;
struct device *dev = &pdev->dev;
- struct irq_domain *irq_domain;
+ bool sei;
msi_data = devm_kzalloc(dev, sizeof(*msi_data), GFP_KERNEL);
if (!msi_data)
if (!irq_domain_get_of_node(dev->msi.domain))
return -ENODEV;
- if (irq_domain_is_msi_parent(dev->msi.domain)) {
- bool sei = msi_data->subset_data->icu_group == ICU_GRP_SEI;
- const struct msi_domain_template *tmpl;
-
- tmpl = sei ? &mvebu_icu_sei_msi_template : &mvebu_icu_nsr_msi_template;
-
- if (!msi_create_device_irq_domain(dev, MSI_DEFAULT_DOMAIN, tmpl,
- ICU_MAX_IRQS, NULL, msi_data))
- return -ENOMEM;
- }
+ sei = msi_data->subset_data->icu_group == ICU_GRP_SEI;
+ tmpl = sei ? &mvebu_icu_sei_msi_template : &mvebu_icu_nsr_msi_template;
- irq_domain = platform_msi_create_device_tree_domain(dev, ICU_MAX_IRQS,
- mvebu_icu_write_msg,
- &mvebu_icu_domain_ops,
- msi_data);
- if (!irq_domain) {
+ if (!msi_create_device_irq_domain(dev, MSI_DEFAULT_DOMAIN, tmpl,
+ ICU_MAX_IRQS, NULL, msi_data)) {
dev_err(dev, "Failed to create ICU MSI domain\n");
return -ENOMEM;
}
projects / users / jedix / linux-maple.git / commitdiff