From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- drivers/gpu/host1x/intr.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 drivers/gpu/host1x/intr.h (limited to 'drivers/gpu/host1x/intr.h') diff --git a/drivers/gpu/host1x/intr.h b/drivers/gpu/host1x/intr.h new file mode 100644 index 000000000..11cdf13e3 --- /dev/null +++ b/drivers/gpu/host1x/intr.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Tegra host1x Interrupt Management + * + * Copyright (c) 2010-2021, NVIDIA Corporation. + */ + +#ifndef __HOST1X_INTR_H +#define __HOST1X_INTR_H + +struct host1x; +struct host1x_syncpt_fence; + +struct host1x_intr_irq_data { + struct host1x *host; + u32 offset; +}; + +/* Initialize host1x sync point interrupt */ +int host1x_intr_init(struct host1x *host); + +/* Deinitialize host1x sync point interrupt */ +void host1x_intr_deinit(struct host1x *host); + +/* Enable host1x sync point interrupt */ +void host1x_intr_start(struct host1x *host); + +/* Disable host1x sync point interrupt */ +void host1x_intr_stop(struct host1x *host); + +void host1x_intr_handle_interrupt(struct host1x *host, unsigned int id); + +void host1x_intr_add_fence_locked(struct host1x *host, struct host1x_syncpt_fence *fence); + +bool host1x_intr_remove_fence(struct host1x *host, struct host1x_syncpt_fence *fence); + +#endif -- cgit v1.3.1