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Subject[PATCH v10 6/9] irqchip/gicv2m: register the MSI global doorbell
Date
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
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