[PATCH v10 6/9] irqchip/gicv2m: register the MSI global doorbell
From: eric.auger@redhat.com (Eric Auger)
Date: 2016-06-07 16:02:05
Also in:
linux-iommu, lkml
Subsystem:
arm generic interrupt controller drivers, irqchip drivers, the rest · Maintainers:
Marc Zyngier, Thomas Gleixner, Linus Torvalds
Use the msi-doorbell API to register the global doorbell. Signed-off-by: Eric Auger <eric.auger@redhat.com> --- v9 -> v10: - introduce the registration concept in place of msi_doorbell_info callback v8 -> v9: - use global_doorbell instead of percpu_doorbells v7 -> v8: - gicv2m_msi_doorbell_info does not return a pointer to const - remove spurious !v2m check - add IOMMU_MMIO flag v7: creation --- drivers/irqchip/irq-gic-v2m.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index ad0d296..11e039b 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c@@ -24,6 +24,8 @@ #include <linux/of_pci.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/iommu.h> +#include <linux/msi-doorbell.h> /* * MSI_TYPER:
@@ -366,12 +368,18 @@ static int __init gicv2m_init_one(struct fwnode_handle *fwnode, goto err_iounmap; } + ret = msi_doorbell_register_global(v2m, v2m->res.start, sizeof(u32), + IOMMU_WRITE | IOMMU_MMIO, false); + if (ret) + goto err_free_bm; + list_add_tail(&v2m->entry, &v2m_nodes); pr_info("range%pR, SPI[%d:%d]\n", res, v2m->spi_start, (v2m->spi_start + v2m->nr_spis - 1)); return 0; - +err_free_bm: + kfree(v2m->bm); err_iounmap: iounmap(v2m->base); err_free_v2m:
--
1.9.1