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 --- arch/mips/bcm63xx/dev-uart.c | 77 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 arch/mips/bcm63xx/dev-uart.c (limited to 'arch/mips/bcm63xx/dev-uart.c') diff --git a/arch/mips/bcm63xx/dev-uart.c b/arch/mips/bcm63xx/dev-uart.c new file mode 100644 index 000000000..5d6bf0445 --- /dev/null +++ b/arch/mips/bcm63xx/dev-uart.c @@ -0,0 +1,77 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon + */ + +#include +#include +#include +#include +#include + +static struct resource uart0_resources[] = { + { + /* start & end filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + /* start filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource uart1_resources[] = { + { + /* start & end filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + /* start filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device bcm63xx_uart_devices[] = { + { + .name = "bcm63xx_uart", + .id = 0, + .num_resources = ARRAY_SIZE(uart0_resources), + .resource = uart0_resources, + }, + + { + .name = "bcm63xx_uart", + .id = 1, + .num_resources = ARRAY_SIZE(uart1_resources), + .resource = uart1_resources, + } +}; + +int __init bcm63xx_uart_register(unsigned int id) +{ + if (id >= ARRAY_SIZE(bcm63xx_uart_devices)) + return -ENODEV; + + if (id == 1 && (!BCMCPU_IS_3368() && !BCMCPU_IS_6358() && + !BCMCPU_IS_6368())) + return -ENODEV; + + if (id == 0) { + uart0_resources[0].start = bcm63xx_regset_address(RSET_UART0); + uart0_resources[0].end = uart0_resources[0].start + + RSET_UART_SIZE - 1; + uart0_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0); + } + + if (id == 1) { + uart1_resources[0].start = bcm63xx_regset_address(RSET_UART1); + uart1_resources[0].end = uart1_resources[0].start + + RSET_UART_SIZE - 1; + uart1_resources[1].start = bcm63xx_get_irq_number(IRQ_UART1); + } + + return platform_device_register(&bcm63xx_uart_devices[id]); +} -- cgit v1.3.1