diff options
Diffstat (limited to 'drivers/iommu/riscv/iommu-platform.c')
| -rw-r--r-- | drivers/iommu/riscv/iommu-platform.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/iommu/riscv/iommu-platform.c b/drivers/iommu/riscv/iommu-platform.c index 725e919b97ef..83a28c83f991 100644 --- a/drivers/iommu/riscv/iommu-platform.c +++ b/drivers/iommu/riscv/iommu-platform.c @@ -10,6 +10,8 @@ * Tomasz Jeznach <tjeznach@rivosinc.com> */ +#include <linux/acpi.h> +#include <linux/irqchip/riscv-imsic.h> #include <linux/kernel.h> #include <linux/msi.h> #include <linux/of_irq.h> @@ -46,6 +48,7 @@ static int riscv_iommu_platform_probe(struct platform_device *pdev) enum riscv_iommu_igs_settings igs; struct device *dev = &pdev->dev; struct riscv_iommu_device *iommu = NULL; + struct irq_domain *msi_domain; struct resource *res = NULL; int vec, ret; @@ -76,8 +79,13 @@ static int riscv_iommu_platform_probe(struct platform_device *pdev) switch (igs) { case RISCV_IOMMU_CAPABILITIES_IGS_BOTH: case RISCV_IOMMU_CAPABILITIES_IGS_MSI: - if (is_of_node(dev->fwnode)) + if (is_of_node(dev_fwnode(dev))) { of_msi_configure(dev, to_of_node(dev->fwnode)); + } else { + msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev), + DOMAIN_BUS_PLATFORM_MSI); + dev_set_msi_domain(dev, msi_domain); + } if (!dev_get_msi_domain(dev)) { dev_warn(dev, "failed to find an MSI domain\n"); @@ -150,6 +158,12 @@ static const struct of_device_id riscv_iommu_of_match[] = { {}, }; +static const struct acpi_device_id riscv_iommu_acpi_match[] = { + { "RSCV0004", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, riscv_iommu_acpi_match); + static struct platform_driver riscv_iommu_platform_driver = { .probe = riscv_iommu_platform_probe, .remove = riscv_iommu_platform_remove, @@ -158,6 +172,7 @@ static struct platform_driver riscv_iommu_platform_driver = { .name = "riscv,iommu", .of_match_table = riscv_iommu_of_match, .suppress_bind_attrs = true, + .acpi_match_table = riscv_iommu_acpi_match, }, }; |