diff options
Diffstat (limited to 'drivers/pci/controller')
| -rw-r--r-- | drivers/pci/controller/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 14 | ||||
| -rw-r--r-- | drivers/pci/controller/pci-tegra.c | 63 | ||||
| -rw-r--r-- | drivers/pci/controller/pci-xgene-msi.c | 53 | ||||
| -rw-r--r-- | drivers/pci/controller/pcie-apple.c | 69 |
5 files changed, 69 insertions, 133 deletions
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index 9800b7681054..eb3cc28d43f8 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -40,6 +40,7 @@ config PCIE_APPLE depends on OF depends on PCI_MSI select PCI_HOST_COMMON + select IRQ_MSI_LIB help Say Y here if you want to enable PCIe controller support on Apple system-on-chips, like the Apple M1. This is required for the USB @@ -227,6 +228,7 @@ config PCI_TEGRA bool "NVIDIA Tegra PCIe controller" depends on ARCH_TEGRA || COMPILE_TEST depends on PCI_MSI + select IRQ_MSI_LIB help Say Y here if you want support for the PCIe host controller found on NVIDIA Tegra SoCs. @@ -303,6 +305,7 @@ config PCI_XGENE_MSI bool "X-Gene v1 PCIe MSI feature" depends on PCI_XGENE depends on PCI_MSI + select IRQ_MSI_LIB default y help Say Y here if you want PCIe MSI support for the APM X-Gene v1 SoC. diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index ac27bda5ba26..e1eaa24559a2 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -3975,24 +3975,18 @@ static int hv_pci_restore_msi_msg(struct pci_dev *pdev, void *arg) { struct irq_data *irq_data; struct msi_desc *entry; - int ret = 0; if (!pdev->msi_enabled && !pdev->msix_enabled) return 0; - msi_lock_descs(&pdev->dev); + guard(msi_descs_lock)(&pdev->dev); msi_for_each_desc(entry, &pdev->dev, MSI_DESC_ASSOCIATED) { irq_data = irq_get_irq_data(entry->irq); - if (WARN_ON_ONCE(!irq_data)) { - ret = -EINVAL; - break; - } - + if (WARN_ON_ONCE(!irq_data)) + return -EINVAL; hv_compose_msi_msg(irq_data, &entry->msg); } - msi_unlock_descs(&pdev->dev); - - return ret; + return 0; } /* diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index d2f88997283a..467ddc701adc 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -22,6 +22,7 @@ #include <linux/iopoll.h> #include <linux/irq.h> #include <linux/irqchip/chained_irq.h> +#include <linux/irqchip/irq-msi-lib.h> #include <linux/irqdomain.h> #include <linux/kernel.h> #include <linux/init.h> @@ -1547,7 +1548,7 @@ static void tegra_pcie_msi_irq(struct irq_desc *desc) unsigned int index = i * 32 + offset; int ret; - ret = generic_handle_domain_irq(msi->domain->parent, index); + ret = generic_handle_domain_irq(msi->domain, index); if (ret) { /* * that's weird who triggered this? @@ -1565,30 +1566,6 @@ static void tegra_pcie_msi_irq(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static void tegra_msi_top_irq_ack(struct irq_data *d) -{ - irq_chip_ack_parent(d); -} - -static void tegra_msi_top_irq_mask(struct irq_data *d) -{ - pci_msi_mask_irq(d); - irq_chip_mask_parent(d); -} - -static void tegra_msi_top_irq_unmask(struct irq_data *d) -{ - pci_msi_unmask_irq(d); - irq_chip_unmask_parent(d); -} - -static struct irq_chip tegra_msi_top_chip = { - .name = "Tegra PCIe MSI", - .irq_ack = tegra_msi_top_irq_ack, - .irq_mask = tegra_msi_top_irq_mask, - .irq_unmask = tegra_msi_top_irq_unmask, -}; - static void tegra_msi_irq_ack(struct irq_data *d) { struct tegra_msi *msi = irq_data_get_irq_chip_data(d); @@ -1690,42 +1667,40 @@ static const struct irq_domain_ops tegra_msi_domain_ops = { .free = tegra_msi_domain_free, }; -static struct msi_domain_info tegra_msi_info = { - .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | - MSI_FLAG_NO_AFFINITY | MSI_FLAG_PCI_MSIX, - .chip = &tegra_msi_top_chip, +static const struct msi_parent_ops tegra_msi_parent_ops = { + .supported_flags = (MSI_GENERIC_FLAGS_MASK | + MSI_FLAG_PCI_MSIX), + .required_flags = (MSI_FLAG_USE_DEF_DOM_OPS | + MSI_FLAG_USE_DEF_CHIP_OPS | + MSI_FLAG_PCI_MSI_MASK_PARENT | + MSI_FLAG_NO_AFFINITY), + .chip_flags = MSI_CHIP_FLAG_SET_ACK, + .bus_select_token = DOMAIN_BUS_PCI_MSI, + .init_dev_msi_info = msi_lib_init_dev_msi_info, }; static int tegra_allocate_domains(struct tegra_msi *msi) { struct tegra_pcie *pcie = msi_to_pcie(msi); struct fwnode_handle *fwnode = dev_fwnode(pcie->dev); - struct irq_domain *parent; - - parent = irq_domain_create_linear(fwnode, INT_PCI_MSI_NR, - &tegra_msi_domain_ops, msi); - if (!parent) { - dev_err(pcie->dev, "failed to create IRQ domain\n"); - return -ENOMEM; - } - irq_domain_update_bus_token(parent, DOMAIN_BUS_NEXUS); + struct irq_domain_info info = { + .fwnode = fwnode, + .ops = &tegra_msi_domain_ops, + .size = INT_PCI_MSI_NR, + .host_data = msi, + }; - msi->domain = pci_msi_create_irq_domain(fwnode, &tegra_msi_info, parent); + msi->domain = msi_create_parent_irq_domain(&info, &tegra_msi_parent_ops); if (!msi->domain) { dev_err(pcie->dev, "failed to create MSI domain\n"); - irq_domain_remove(parent); return -ENOMEM; } - return 0; } static void tegra_free_domains(struct tegra_msi *msi) { - struct irq_domain *parent = msi->domain->parent; - irq_domain_remove(msi->domain); - irq_domain_remove(parent); } static int tegra_pcie_msi_setup(struct tegra_pcie *pcie) diff --git a/drivers/pci/controller/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c index 69a9c0a87639..b05ec8b0bb93 100644 --- a/drivers/pci/controller/pci-xgene-msi.c +++ b/drivers/pci/controller/pci-xgene-msi.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/msi.h> #include <linux/irqchip/chained_irq.h> +#include <linux/irqchip/irq-msi-lib.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/of_pci.h> @@ -32,7 +33,6 @@ struct xgene_msi_group { struct xgene_msi { struct device_node *node; struct irq_domain *inner_domain; - struct irq_domain *msi_domain; u64 msi_addr; void __iomem *msi_regs; unsigned long *bitmap; @@ -44,20 +44,6 @@ struct xgene_msi { /* Global data */ static struct xgene_msi xgene_msi_ctrl; -static struct irq_chip xgene_msi_top_irq_chip = { - .name = "X-Gene1 MSI", - .irq_enable = pci_msi_unmask_irq, - .irq_disable = pci_msi_mask_irq, - .irq_mask = pci_msi_mask_irq, - .irq_unmask = pci_msi_unmask_irq, -}; - -static struct msi_domain_info xgene_msi_domain_info = { - .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | - MSI_FLAG_PCI_MSIX), - .chip = &xgene_msi_top_irq_chip, -}; - /* * X-Gene v1 has 16 groups of MSI termination registers MSInIRx, where * n is group number (0..F), x is index of registers in each group (0..7) @@ -235,34 +221,35 @@ static void xgene_irq_domain_free(struct irq_domain *domain, irq_domain_free_irqs_parent(domain, virq, nr_irqs); } -static const struct irq_domain_ops msi_domain_ops = { +static const struct irq_domain_ops xgene_msi_domain_ops = { .alloc = xgene_irq_domain_alloc, .free = xgene_irq_domain_free, }; +static const struct msi_parent_ops xgene_msi_parent_ops = { + .supported_flags = (MSI_GENERIC_FLAGS_MASK | + MSI_FLAG_PCI_MSIX), + .required_flags = (MSI_FLAG_USE_DEF_DOM_OPS | + MSI_FLAG_USE_DEF_CHIP_OPS), + .bus_select_token = DOMAIN_BUS_PCI_MSI, + .init_dev_msi_info = msi_lib_init_dev_msi_info, +}; + static int xgene_allocate_domains(struct xgene_msi *msi) { - msi->inner_domain = irq_domain_add_linear(NULL, NR_MSI_VEC, - &msi_domain_ops, msi); - if (!msi->inner_domain) - return -ENOMEM; - - msi->msi_domain = pci_msi_create_irq_domain(of_fwnode_handle(msi->node), - &xgene_msi_domain_info, - msi->inner_domain); - - if (!msi->msi_domain) { - irq_domain_remove(msi->inner_domain); - return -ENOMEM; - } - - return 0; + struct irq_domain_info info = { + .fwnode = of_fwnode_handle(msi->node), + .ops = &xgene_msi_domain_ops, + .size = NR_MSI_VEC, + .host_data = msi, + }; + + msi->inner_domain = msi_create_parent_irq_domain(&info, &xgene_msi_parent_ops); + return msi->inner_domain ? 0 : -ENOMEM; } static void xgene_free_domains(struct xgene_msi *msi) { - if (msi->msi_domain) - irq_domain_remove(msi->msi_domain); if (msi->inner_domain) irq_domain_remove(msi->inner_domain); } diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c index 18e11b9a7f46..3d412a931774 100644 --- a/drivers/pci/controller/pcie-apple.c +++ b/drivers/pci/controller/pcie-apple.c @@ -22,6 +22,7 @@ #include <linux/kernel.h> #include <linux/iopoll.h> #include <linux/irqchip/chained_irq.h> +#include <linux/irqchip/irq-msi-lib.h> #include <linux/irqdomain.h> #include <linux/list.h> #include <linux/module.h> @@ -133,7 +134,6 @@ struct apple_pcie { struct mutex lock; struct device *dev; void __iomem *base; - struct irq_domain *domain; unsigned long *bitmap; struct list_head ports; struct completion event; @@ -162,27 +162,6 @@ static void rmw_clear(u32 clr, void __iomem *addr) writel_relaxed(readl_relaxed(addr) & ~clr, addr); } -static void apple_msi_top_irq_mask(struct irq_data *d) -{ - pci_msi_mask_irq(d); - irq_chip_mask_parent(d); -} - -static void apple_msi_top_irq_unmask(struct irq_data *d) -{ - pci_msi_unmask_irq(d); - irq_chip_unmask_parent(d); -} - -static struct irq_chip apple_msi_top_chip = { - .name = "PCIe MSI", - .irq_mask = apple_msi_top_irq_mask, - .irq_unmask = apple_msi_top_irq_unmask, - .irq_eoi = irq_chip_eoi_parent, - .irq_set_affinity = irq_chip_set_affinity_parent, - .irq_set_type = irq_chip_set_type_parent, -}; - static void apple_msi_compose_msg(struct irq_data *data, struct msi_msg *msg) { msg->address_hi = upper_32_bits(DOORBELL_ADDR); @@ -226,8 +205,7 @@ static int apple_msi_domain_alloc(struct irq_domain *domain, unsigned int virq, for (i = 0; i < nr_irqs; i++) { irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i, - &apple_msi_bottom_chip, - domain->host_data); + &apple_msi_bottom_chip, pcie); } return 0; @@ -251,12 +229,6 @@ static const struct irq_domain_ops apple_msi_domain_ops = { .free = apple_msi_domain_free, }; -static struct msi_domain_info apple_msi_info = { - .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | - MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX), - .chip = &apple_msi_top_chip, -}; - static void apple_port_irq_mask(struct irq_data *data) { struct apple_pcie_port *port = irq_data_get_irq_chip_data(data); @@ -595,11 +567,28 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie, return 0; } +static const struct msi_parent_ops apple_msi_parent_ops = { + .supported_flags = (MSI_GENERIC_FLAGS_MASK | + MSI_FLAG_PCI_MSIX | + MSI_FLAG_MULTI_PCI_MSI), + .required_flags = (MSI_FLAG_USE_DEF_DOM_OPS | + MSI_FLAG_USE_DEF_CHIP_OPS | + MSI_FLAG_PCI_MSI_MASK_PARENT), + .chip_flags = MSI_CHIP_FLAG_SET_EOI, + .bus_select_token = DOMAIN_BUS_PCI_MSI, + .init_dev_msi_info = msi_lib_init_dev_msi_info, +}; + static int apple_msi_init(struct apple_pcie *pcie) { struct fwnode_handle *fwnode = dev_fwnode(pcie->dev); + struct irq_domain_info info = { + .fwnode = fwnode, + .ops = &apple_msi_domain_ops, + .size = pcie->nvecs, + .host_data = pcie, + }; struct of_phandle_args args = {}; - struct irq_domain *parent; int ret; ret = of_parse_phandle_with_args(to_of_node(fwnode), "msi-ranges", @@ -619,28 +608,16 @@ static int apple_msi_init(struct apple_pcie *pcie) if (!pcie->bitmap) return -ENOMEM; - parent = irq_find_matching_fwspec(&pcie->fwspec, DOMAIN_BUS_WIRED); - if (!parent) { + info.parent = irq_find_matching_fwspec(&pcie->fwspec, DOMAIN_BUS_WIRED); + if (!info.parent) { dev_err(pcie->dev, "failed to find parent domain\n"); return -ENXIO; } - parent = irq_domain_create_hierarchy(parent, 0, pcie->nvecs, fwnode, - &apple_msi_domain_ops, pcie); - if (!parent) { + if (!msi_create_parent_irq_domain(&info, &apple_msi_parent_ops)) { dev_err(pcie->dev, "failed to create IRQ domain\n"); return -ENOMEM; } - irq_domain_update_bus_token(parent, DOMAIN_BUS_NEXUS); - - pcie->domain = pci_msi_create_irq_domain(fwnode, &apple_msi_info, - parent); - if (!pcie->domain) { - dev_err(pcie->dev, "failed to create MSI domain\n"); - irq_domain_remove(parent); - return -ENOMEM; - } - return 0; } |