Rename mc_* to plda_* for common data structures, setup and IRQ functions. The modification includes: - Add related data structures of PCIe host instance. mc_pcie --> plda_pcie_rp (Get most of data members) mc_msi --> plda_msi - function rename list: mc_pcie_setup_window --> plda_pcie_setup_window mc_pcie_setup_windows --> plda_pcie_setup_iomems mc_allocate_msi_domains --> plda_allocate_msi_domains MSI interrupts related functions and IRQ domain (primary function is mc_handle_msi): mc_handle_msi --> plda_handle_msi INTx interrupts related functions and IRQ domain (primary function is mc_handle_intx): mc_handle_intx --> plda_handle_intx Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx> --- .../pci/controller/plda/pcie-microchip-host.c | 216 ++++++++---------- drivers/pci/controller/plda/pcie-plda.h | 20 ++ 2 files changed, 120 insertions(+), 116 deletions(-) diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c index 5ab11741f406..e25459f34891 100644 --- a/drivers/pci/controller/plda/pcie-microchip-host.c +++ b/drivers/pci/controller/plda/pcie-microchip-host.c @@ -21,9 +21,6 @@ #include "../../pci.h" #include "pcie-plda.h" -/* Number of MSI IRQs */ -#define MC_MAX_NUM_MSI_IRQS 32 - /* PCIe Bridge Phy and Controller Phy offsets */ #define MC_PCIE1_BRIDGE_ADDR 0x00008000u #define MC_PCIE1_CTRL_ADDR 0x0000a000u @@ -175,22 +172,9 @@ struct event_map { u32 event_bit; }; -struct mc_msi { - struct mutex lock; /* Protect used bitmap */ - struct irq_domain *msi_domain; - struct irq_domain *dev_domain; - u32 num_vectors; - u64 vector_phy; - DECLARE_BITMAP(used, MC_MAX_NUM_MSI_IRQS); -}; - struct mc_pcie { + struct plda_pcie_rp plda; void __iomem *axi_base_addr; - struct device *dev; - struct irq_domain *intx_domain; - struct irq_domain *event_domain; - raw_spinlock_t lock; - struct mc_msi msi; }; struct cause { @@ -308,7 +292,7 @@ static struct mc_pcie *port; static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam) { - struct mc_msi *msi = &port->msi; + struct plda_msi *msi = &port->plda.msi; u16 reg; u8 queue_size; @@ -329,14 +313,13 @@ static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam) ecam + MC_MSI_CAP_CTRL_OFFSET + PCI_MSI_ADDRESS_HI); } -static void mc_handle_msi(struct irq_desc *desc) +static void plda_handle_msi(struct irq_desc *desc) { - struct mc_pcie *port = irq_desc_get_handler_data(desc); + struct plda_pcie_rp *port = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); struct device *dev = port->dev; - struct mc_msi *msi = &port->msi; - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct plda_msi *msi = &port->msi; + void __iomem *bridge_base_addr = port->bridge_addr; unsigned long status; u32 bit; int ret; @@ -358,19 +341,18 @@ static void mc_handle_msi(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static void mc_msi_bottom_irq_ack(struct irq_data *data) +static void plda_msi_bottom_irq_ack(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + void __iomem *bridge_base_addr = port->bridge_addr; u32 bitpos = data->hwirq; writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI); } -static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) +static void plda_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); phys_addr_t addr = port->msi.vector_phy; msg->address_lo = lower_32_bits(addr); @@ -381,24 +363,24 @@ static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) (int)data->hwirq, msg->address_hi, msg->address_lo); } -static int mc_msi_set_affinity(struct irq_data *irq_data, - const struct cpumask *mask, bool force) +static int plda_msi_set_affinity(struct irq_data *irq_data, + const struct cpumask *mask, bool force) { return -EINVAL; } -static struct irq_chip mc_msi_bottom_irq_chip = { - .name = "Microchip MSI", - .irq_ack = mc_msi_bottom_irq_ack, - .irq_compose_msi_msg = mc_compose_msi_msg, - .irq_set_affinity = mc_msi_set_affinity, +static struct irq_chip plda_msi_bottom_irq_chip = { + .name = "PLDA MSI", + .irq_ack = plda_msi_bottom_irq_ack, + .irq_compose_msi_msg = plda_compose_msi_msg, + .irq_set_affinity = plda_msi_set_affinity, }; -static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq, - unsigned int nr_irqs, void *args) +static int plda_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs, void *args) { - struct mc_pcie *port = domain->host_data; - struct mc_msi *msi = &port->msi; + struct plda_pcie_rp *port = domain->host_data; + struct plda_msi *msi = &port->msi; unsigned long bit; mutex_lock(&msi->lock); @@ -410,7 +392,7 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq, set_bit(bit, msi->used); - irq_domain_set_info(domain, virq, bit, &mc_msi_bottom_irq_chip, + irq_domain_set_info(domain, virq, bit, &plda_msi_bottom_irq_chip, domain->host_data, handle_edge_irq, NULL, NULL); mutex_unlock(&msi->lock); @@ -418,12 +400,12 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq, return 0; } -static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq, - unsigned int nr_irqs) +static void plda_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) { struct irq_data *d = irq_domain_get_irq_data(domain, virq); - struct mc_pcie *port = irq_data_get_irq_chip_data(d); - struct mc_msi *msi = &port->msi; + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(d); + struct plda_msi *msi = &port->msi; mutex_lock(&msi->lock); @@ -436,28 +418,28 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq, } static const struct irq_domain_ops msi_domain_ops = { - .alloc = mc_irq_msi_domain_alloc, - .free = mc_irq_msi_domain_free, + .alloc = plda_irq_msi_domain_alloc, + .free = plda_irq_msi_domain_free, }; -static struct irq_chip mc_msi_irq_chip = { - .name = "Microchip PCIe MSI", +static struct irq_chip plda_msi_irq_chip = { + .name = "PLDA PCIe MSI", .irq_ack = irq_chip_ack_parent, .irq_mask = pci_msi_mask_irq, .irq_unmask = pci_msi_unmask_irq, }; -static struct msi_domain_info mc_msi_domain_info = { +static struct msi_domain_info plda_msi_domain_info = { .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | MSI_FLAG_PCI_MSIX), - .chip = &mc_msi_irq_chip, + .chip = &plda_msi_irq_chip, }; -static int mc_allocate_msi_domains(struct mc_pcie *port) +static int plda_allocate_msi_domains(struct plda_pcie_rp *port) { struct device *dev = port->dev; struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node); - struct mc_msi *msi = &port->msi; + struct plda_msi *msi = &port->msi; mutex_init(&port->msi.lock); @@ -468,7 +450,7 @@ static int mc_allocate_msi_domains(struct mc_pcie *port) return -ENOMEM; } - msi->msi_domain = pci_msi_create_irq_domain(fwnode, &mc_msi_domain_info, + msi->msi_domain = pci_msi_create_irq_domain(fwnode, &plda_msi_domain_info, msi->dev_domain); if (!msi->msi_domain) { dev_err(dev, "failed to create MSI domain\n"); @@ -479,13 +461,12 @@ static int mc_allocate_msi_domains(struct mc_pcie *port) return 0; } -static void mc_handle_intx(struct irq_desc *desc) +static void plda_handle_intx(struct irq_desc *desc) { - struct mc_pcie *port = irq_desc_get_handler_data(desc); + struct plda_pcie_rp *port = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); struct device *dev = port->dev; - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + void __iomem *bridge_base_addr = port->bridge_addr; unsigned long status; u32 bit; int ret; @@ -507,21 +488,19 @@ static void mc_handle_intx(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static void mc_ack_intx_irq(struct irq_data *data) +static void plda_ack_intx_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + void __iomem *bridge_base_addr = port->bridge_addr; u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT); writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL); } -static void mc_mask_intx_irq(struct irq_data *data) +static void plda_mask_intx_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + void __iomem *bridge_base_addr = port->bridge_addr; unsigned long flags; u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT); u32 val; @@ -533,11 +512,10 @@ static void mc_mask_intx_irq(struct irq_data *data) raw_spin_unlock_irqrestore(&port->lock, flags); } -static void mc_unmask_intx_irq(struct irq_data *data) +static void plda_unmask_intx_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + void __iomem *bridge_base_addr = port->bridge_addr; unsigned long flags; u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT); u32 val; @@ -549,24 +527,24 @@ static void mc_unmask_intx_irq(struct irq_data *data) raw_spin_unlock_irqrestore(&port->lock, flags); } -static struct irq_chip mc_intx_irq_chip = { - .name = "Microchip PCIe INTx", - .irq_ack = mc_ack_intx_irq, - .irq_mask = mc_mask_intx_irq, - .irq_unmask = mc_unmask_intx_irq, +static struct irq_chip plda_intx_irq_chip = { + .name = "PLDA PCIe INTx", + .irq_ack = plda_ack_intx_irq, + .irq_mask = plda_mask_intx_irq, + .irq_unmask = plda_unmask_intx_irq, }; -static int mc_pcie_intx_map(struct irq_domain *domain, unsigned int irq, - irq_hw_number_t hwirq) +static int plda_pcie_intx_map(struct irq_domain *domain, unsigned int irq, + irq_hw_number_t hwirq) { - irq_set_chip_and_handler(irq, &mc_intx_irq_chip, handle_level_irq); + irq_set_chip_and_handler(irq, &plda_intx_irq_chip, handle_level_irq); irq_set_chip_data(irq, domain->host_data); return 0; } static const struct irq_domain_ops intx_domain_ops = { - .map = mc_pcie_intx_map, + .map = plda_pcie_intx_map, }; static inline u32 reg_to_event(u32 reg, struct event_map field) @@ -626,21 +604,22 @@ static u32 local_events(struct mc_pcie *port) return val; } -static u32 get_events(struct mc_pcie *port) +static u32 get_events(struct plda_pcie_rp *port) { + struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda); u32 events = 0; - events |= pcie_events(port); - events |= sec_errors(port); - events |= ded_errors(port); - events |= local_events(port); + events |= pcie_events(mc_port); + events |= sec_errors(mc_port); + events |= ded_errors(mc_port); + events |= local_events(mc_port); return events; } static irqreturn_t mc_event_handler(int irq, void *dev_id) { - struct mc_pcie *port = dev_id; + struct plda_pcie_rp *port = dev_id; struct device *dev = port->dev; struct irq_data *data; @@ -656,7 +635,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id) static void mc_handle_event(struct irq_desc *desc) { - struct mc_pcie *port = irq_desc_get_handler_data(desc); + struct plda_pcie_rp *port = irq_desc_get_handler_data(desc); unsigned long events; u32 bit; struct irq_chip *chip = irq_desc_get_chip(desc); @@ -673,12 +652,13 @@ static void mc_handle_event(struct irq_desc *desc) static void mc_ack_event_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda); u32 event = data->hwirq; void __iomem *addr; u32 mask; - addr = port->axi_base_addr + event_descs[event].base + + addr = mc_port->axi_base_addr + event_descs[event].base + event_descs[event].offset; mask = event_descs[event].mask; mask |= event_descs[event].enb_mask; @@ -688,13 +668,14 @@ static void mc_ack_event_irq(struct irq_data *data) static void mc_mask_event_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda); u32 event = data->hwirq; void __iomem *addr; u32 mask; u32 val; - addr = port->axi_base_addr + event_descs[event].base + + addr = mc_port->axi_base_addr + event_descs[event].base + event_descs[event].mask_offset; mask = event_descs[event].mask; if (event_descs[event].enb_mask) { @@ -718,13 +699,14 @@ static void mc_mask_event_irq(struct irq_data *data) static void mc_unmask_event_irq(struct irq_data *data) { - struct mc_pcie *port = irq_data_get_irq_chip_data(data); + struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data); + struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda); u32 event = data->hwirq; void __iomem *addr; u32 mask; u32 val; - addr = port->axi_base_addr + event_descs[event].base + + addr = mc_port->axi_base_addr + event_descs[event].base + event_descs[event].mask_offset; mask = event_descs[event].mask; @@ -806,7 +788,7 @@ static int mc_pcie_init_clks(struct device *dev) return 0; } -static int mc_pcie_init_irq_domains(struct mc_pcie *port) +static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port) { struct device *dev = port->dev; struct device_node *node = dev->of_node; @@ -842,12 +824,12 @@ static int mc_pcie_init_irq_domains(struct mc_pcie *port) of_node_put(pcie_intc_node); raw_spin_lock_init(&port->lock); - return mc_allocate_msi_domains(port); + return plda_allocate_msi_domains(port); } -static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, - phys_addr_t axi_addr, phys_addr_t pci_addr, - size_t size) +static void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, + phys_addr_t axi_addr, phys_addr_t pci_addr, + size_t size) { u32 atr_sz = ilog2(size) - 1; u32 val; @@ -883,12 +865,10 @@ static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, writel(0, bridge_base_addr + ATR0_PCIE_WIN0_SRC_ADDR); } -static int mc_pcie_setup_windows(struct platform_device *pdev, - struct mc_pcie *port) +static int plda_pcie_setup_iomems(struct pci_host_bridge *bridge, + struct plda_pcie_rp *port) { - void __iomem *bridge_base_addr = - port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; - struct pci_host_bridge *bridge = platform_get_drvdata(pdev); + void __iomem *bridge_base_addr = port->bridge_addr; struct resource_entry *entry; u64 pci_addr; u32 index = 1; @@ -896,9 +876,9 @@ static int mc_pcie_setup_windows(struct platform_device *pdev, resource_list_for_each_entry(entry, &bridge->windows) { if (resource_type(entry->res) == IORESOURCE_MEM) { pci_addr = entry->res->start - entry->offset; - mc_pcie_setup_window(bridge_base_addr, index, - entry->res->start, pci_addr, - resource_size(entry->res)); + plda_pcie_setup_window(bridge_base_addr, index, + entry->res->start, pci_addr, + resource_size(entry->res)); index++; } } @@ -966,7 +946,7 @@ static void mc_disable_interrupts(struct mc_pcie *port) writel_relaxed(GENMASK(31, 0), bridge_base_addr + ISTATUS_HOST); } -static int mc_init_interrupts(struct platform_device *pdev, struct mc_pcie *port) +static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port) { struct device *dev = &pdev->dev; int irq; @@ -1006,7 +986,7 @@ static int mc_init_interrupts(struct platform_device *pdev, struct mc_pcie *port } /* Plug the INTx chained handler */ - irq_set_chained_handler_and_data(intx_irq, mc_handle_intx, port); + irq_set_chained_handler_and_data(intx_irq, plda_handle_intx, port); msi_irq = irq_create_mapping(port->event_domain, EVENT_LOCAL_PM_MSI_INT_MSI); @@ -1014,7 +994,7 @@ static int mc_init_interrupts(struct platform_device *pdev, struct mc_pcie *port return -ENXIO; /* Plug the MSI chained handler */ - irq_set_chained_handler_and_data(msi_irq, mc_handle_msi, port); + irq_set_chained_handler_and_data(msi_irq, plda_handle_msi, port); /* Plug the main event chained handler */ irq_set_chained_handler_and_data(irq, mc_handle_event, port); @@ -1028,23 +1008,24 @@ static int mc_platform_init(struct pci_config_window *cfg) struct platform_device *pdev = to_platform_device(dev); void __iomem *bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + struct pci_host_bridge *bridge = platform_get_drvdata(pdev); int ret; /* Configure address translation table 0 for PCIe config space */ - mc_pcie_setup_window(bridge_base_addr, 0, cfg->res.start, - cfg->res.start, - resource_size(&cfg->res)); + plda_pcie_setup_window(bridge_base_addr, 0, cfg->res.start, + cfg->res.start, + resource_size(&cfg->res)); /* Need some fixups in config space */ mc_pcie_enable_msi(port, cfg->win); /* Configure non-config space outbound ranges */ - ret = mc_pcie_setup_windows(pdev, port); + ret = plda_pcie_setup_iomems(bridge, &port->plda); if (ret) return ret; /* Address translation is up; safe to enable interrupts */ - ret = mc_init_interrupts(pdev, port); + ret = mc_init_interrupts(pdev, &port->plda); if (ret) return ret; @@ -1055,6 +1036,7 @@ static int mc_host_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; void __iomem *bridge_base_addr; + struct plda_pcie_rp *plda; int ret; u32 val; @@ -1062,7 +1044,8 @@ static int mc_host_probe(struct platform_device *pdev) if (!port) return -ENOMEM; - port->dev = dev; + plda = &port->plda; + plda->dev = dev; port->axi_base_addr = devm_platform_ioremap_resource(pdev, 1); if (IS_ERR(port->axi_base_addr)) @@ -1071,6 +1054,7 @@ static int mc_host_probe(struct platform_device *pdev) mc_disable_interrupts(port); bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR; + plda->bridge_addr = bridge_base_addr; /* Allow enabling MSI by disabling MSI-X */ val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0); @@ -1082,10 +1066,10 @@ static int mc_host_probe(struct platform_device *pdev) val &= NUM_MSI_MSGS_MASK; val >>= NUM_MSI_MSGS_SHIFT; - port->msi.num_vectors = 1 << val; + plda->msi.num_vectors = 1 << val; /* Pick vector address from design */ - port->msi.vector_phy = readl_relaxed(bridge_base_addr + IMSI_ADDR); + plda->msi.vector_phy = readl_relaxed(bridge_base_addr + IMSI_ADDR); ret = mc_pcie_init_clks(dev); if (ret) { diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h index faee30b0a761..2a9f6ebc4560 100644 --- a/drivers/pci/controller/plda/pcie-plda.h +++ b/drivers/pci/controller/plda/pcie-plda.h @@ -6,6 +6,9 @@ #ifndef _PCIE_PLDA_H #define _PCIE_PLDA_H +/* Number of MSI IRQs */ +#define PLDA_MAX_NUM_MSI_IRQS 32 + /* PCIe Bridge Phy Regs */ #define PCIE_PCI_IRQ_DW0 0xa8 #define MSIX_CAP_MASK BIT(31) @@ -87,4 +90,21 @@ /* PCIe Config space MSI capability structure */ #define MC_MSI_CAP_CTRL_OFFSET 0xe0u +struct plda_msi { + struct mutex lock; /* Protect used bitmap */ + struct irq_domain *msi_domain; + struct irq_domain *dev_domain; + u32 num_vectors; + u64 vector_phy; + DECLARE_BITMAP(used, PLDA_MAX_NUM_MSI_IRQS); +}; + +struct plda_pcie_rp { + struct device *dev; + struct irq_domain *intx_domain; + struct irq_domain *event_domain; + raw_spinlock_t lock; + struct plda_msi msi; + void __iomem *bridge_addr; +}; #endif -- 2.17.1