From b46c2088da17b8f9210bf0860af88ec533435af9 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Mon, 1 Feb 2016 01:40:51 -0800 Subject: [PATCH] x86: irq: Move irq_router to a per driver priv At present irq_router is declared as a static struct irq_router in arch/x86/cpu/irq.c. Since it's a driver control block, it makes sense to move it to a per driver priv. Adjust existing APIs to accept an additional parameter of irq_router's udevice. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Simon Glass --- arch/x86/cpu/irq.c | 73 +++++++++++++++++++------------------ arch/x86/include/asm/pirq_routing.h | 12 ++++-- arch/x86/lib/pirq_routing.c | 12 +++--- 3 files changed, 51 insertions(+), 46 deletions(-) diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c index cc0297f..fea6f65 100644 --- a/arch/x86/cpu/irq.c +++ b/arch/x86/cpu/irq.c @@ -16,19 +16,18 @@ DECLARE_GLOBAL_DATA_PTR; -static struct irq_router irq_router; static struct irq_routing_table *pirq_routing_table; -bool pirq_check_irq_routed(int link, u8 irq) +bool pirq_check_irq_routed(struct udevice *dev, int link, u8 irq) { + struct irq_router *priv = dev_get_priv(dev); u8 pirq; - int base = irq_router.link_base; + int base = priv->link_base; - if (irq_router.config == PIRQ_VIA_PCI) - pirq = x86_pci_read_config8(irq_router.bdf, - LINK_N2V(link, base)); + if (priv->config == PIRQ_VIA_PCI) + pirq = x86_pci_read_config8(priv->bdf, LINK_N2V(link, base)); else - pirq = readb(irq_router.ibase + LINK_N2V(link, base)); + pirq = readb(priv->ibase + LINK_N2V(link, base)); pirq &= 0xf; @@ -39,24 +38,26 @@ bool pirq_check_irq_routed(int link, u8 irq) return pirq == irq ? true : false; } -int pirq_translate_link(int link) +int pirq_translate_link(struct udevice *dev, int link) { - return LINK_V2N(link, irq_router.link_base); + struct irq_router *priv = dev_get_priv(dev); + + return LINK_V2N(link, priv->link_base); } -void pirq_assign_irq(int link, u8 irq) +void pirq_assign_irq(struct udevice *dev, int link, u8 irq) { - int base = irq_router.link_base; + struct irq_router *priv = dev_get_priv(dev); + int base = priv->link_base; /* IRQ# 0/1/2/8/13 are reserved */ if (irq < 3 || irq == 8 || irq == 13) return; - if (irq_router.config == PIRQ_VIA_PCI) - x86_pci_write_config8(irq_router.bdf, - LINK_N2V(link, base), irq); + if (priv->config == PIRQ_VIA_PCI) + x86_pci_write_config8(priv->bdf, LINK_N2V(link, base), irq); else - writeb(irq, irq_router.ibase + LINK_N2V(link, base)); + writeb(irq, priv->ibase + LINK_N2V(link, base)); } static struct irq_info *check_dup_entry(struct irq_info *slot_base, @@ -74,17 +75,18 @@ static struct irq_info *check_dup_entry(struct irq_info *slot_base, return (i == entry_num) ? NULL : slot; } -static inline void fill_irq_info(struct irq_info *slot, int bus, int device, - int pin, int pirq) +static inline void fill_irq_info(struct irq_router *priv, struct irq_info *slot, + int bus, int device, int pin, int pirq) { slot->bus = bus; slot->devfn = (device << 3) | 0; - slot->irq[pin - 1].link = LINK_N2V(pirq, irq_router.link_base); - slot->irq[pin - 1].bitmap = irq_router.irq_mask; + slot->irq[pin - 1].link = LINK_N2V(pirq, priv->link_base); + slot->irq[pin - 1].bitmap = priv->irq_mask; } static int create_pirq_routing_table(struct udevice *dev) { + struct irq_router *priv = dev_get_priv(dev); const void *blob = gd->fdt_blob; int node; int len, count; @@ -98,15 +100,15 @@ static int create_pirq_routing_table(struct udevice *dev) node = dev->of_offset; /* extract the bdf from fdt_pci_addr */ - irq_router.bdf = dm_pci_get_bdf(dev->parent); + priv->bdf = dm_pci_get_bdf(dev->parent); ret = fdt_find_string(blob, node, "intel,pirq-config", "pci"); if (!ret) { - irq_router.config = PIRQ_VIA_PCI; + priv->config = PIRQ_VIA_PCI; } else { ret = fdt_find_string(blob, node, "intel,pirq-config", "ibase"); if (!ret) - irq_router.config = PIRQ_VIA_IBASE; + priv->config = PIRQ_VIA_IBASE; else return -EINVAL; } @@ -114,12 +116,12 @@ static int create_pirq_routing_table(struct udevice *dev) ret = fdtdec_get_int(blob, node, "intel,pirq-link", -1); if (ret == -1) return ret; - irq_router.link_base = ret; + priv->link_base = ret; - irq_router.irq_mask = fdtdec_get_int(blob, node, - "intel,pirq-mask", PIRQ_BITMAP); + priv->irq_mask = fdtdec_get_int(blob, node, + "intel,pirq-mask", PIRQ_BITMAP); - if (irq_router.config == PIRQ_VIA_IBASE) { + if (priv->config == PIRQ_VIA_IBASE) { int ibase_off; ibase_off = fdtdec_get_int(blob, node, "intel,ibase-offset", 0); @@ -136,9 +138,8 @@ static int create_pirq_routing_table(struct udevice *dev) * 2) memory range decoding is enabled. * Hence we don't do any santify test here. */ - irq_router.ibase = x86_pci_read_config32(irq_router.bdf, - ibase_off); - irq_router.ibase &= ~0xf; + priv->ibase = x86_pci_read_config32(priv->bdf, ibase_off); + priv->ibase &= ~0xf; } cell = fdt_getprop(blob, node, "intel,pirq-routing", &len); @@ -153,9 +154,8 @@ static int create_pirq_routing_table(struct udevice *dev) /* Populate the PIRQ table fields */ rt->signature = PIRQ_SIGNATURE; rt->version = PIRQ_VERSION; - rt->rtr_bus = PCI_BUS(irq_router.bdf); - rt->rtr_devfn = (PCI_DEV(irq_router.bdf) << 3) | - PCI_FUNC(irq_router.bdf); + rt->rtr_bus = PCI_BUS(priv->bdf); + rt->rtr_devfn = (PCI_DEV(priv->bdf) << 3) | PCI_FUNC(priv->bdf); rt->rtr_vendor = PCI_VENDOR_ID_INTEL; rt->rtr_device = PCI_DEVICE_ID_INTEL_ICH7_31; @@ -192,7 +192,7 @@ static int create_pirq_routing_table(struct udevice *dev) * routing information in the device tree. */ if (slot->irq[pr.pin - 1].link != - LINK_N2V(pr.pirq, irq_router.link_base)) + LINK_N2V(pr.pirq, priv->link_base)) debug("WARNING: Inconsistent PIRQ routing information\n"); continue; } @@ -200,8 +200,8 @@ static int create_pirq_routing_table(struct udevice *dev) slot = slot_base + irq_entries++; } debug("writing INT%c\n", 'A' + pr.pin - 1); - fill_irq_info(slot, PCI_BUS(pr.bdf), PCI_DEV(pr.bdf), pr.pin, - pr.pirq); + fill_irq_info(priv, slot, PCI_BUS(pr.bdf), PCI_DEV(pr.bdf), + pr.pin, pr.pirq); } rt->size = irq_entries * sizeof(struct irq_info) + 32; @@ -221,7 +221,7 @@ int irq_router_common_init(struct udevice *dev) return ret; } /* Route PIRQ */ - pirq_route_irqs(pirq_routing_table->slots, + pirq_route_irqs(dev, pirq_routing_table->slots, get_irq_slot_count(pirq_routing_table)); return 0; @@ -250,6 +250,7 @@ U_BOOT_DRIVER(irq_router_drv) = { .id = UCLASS_IRQ, .of_match = irq_router_ids, .probe = irq_router_probe, + .priv_auto_alloc_size = sizeof(struct irq_router), }; UCLASS_DRIVER(irq) = { diff --git a/arch/x86/include/asm/pirq_routing.h b/arch/x86/include/asm/pirq_routing.h index ddc08e1..0afcb46 100644 --- a/arch/x86/include/asm/pirq_routing.h +++ b/arch/x86/include/asm/pirq_routing.h @@ -72,12 +72,13 @@ static inline int get_irq_slot_count(struct irq_routing_table *rt) * Note: this function should be provided by the platform codes, as the * implementation of interrupt router may be different. * + * @dev: irq router's udevice * @link: link number which represents a PIRQ * @irq: the 8259 IRQ number * @return: true if the irq is already routed to 8259 for a given link, * false elsewise */ -bool pirq_check_irq_routed(int link, u8 irq); +bool pirq_check_irq_routed(struct udevice *dev, int link, u8 irq); /** * pirq_translate_link() - Translate a link value @@ -89,10 +90,11 @@ bool pirq_check_irq_routed(int link, u8 irq); * Note: this function should be provided by the platform codes, as the * implementation of interrupt router may be different. * + * @dev: irq router's udevice * @link: platform-specific link value * @return: link number which represents a PIRQ */ -int pirq_translate_link(int link); +int pirq_translate_link(struct udevice *dev, int link); /** * pirq_assign_irq() - Assign an IRQ to a PIRQ link @@ -103,10 +105,11 @@ int pirq_translate_link(int link); * Note: this function should be provided by the platform codes, as the * implementation of interrupt router may be different. * + * @dev: irq router's udevice * @link: link number which represents a PIRQ * @irq: IRQ to which the PIRQ is routed */ -void pirq_assign_irq(int link, u8 irq); +void pirq_assign_irq(struct udevice *dev, int link, u8 irq); /** * pirq_route_irqs() - Route PIRQs to 8259 PIC @@ -117,10 +120,11 @@ void pirq_assign_irq(int link, u8 irq); * The configuration source is taken from a struct irq_info table, the format * of which is defined in PIRQ routing table spec and PCI BIOS spec. * + * @dev: irq router's udevice * @irq: pointer to the base address of the struct irq_info * @num: number of entries in the struct irq_info */ -void pirq_route_irqs(struct irq_info *irq, int num); +void pirq_route_irqs(struct udevice *dev, struct irq_info *irq, int num); /** * copy_pirq_routing_table() - Copy a PIRQ routing table diff --git a/arch/x86/lib/pirq_routing.c b/arch/x86/lib/pirq_routing.c index ba41169..3cc6adb 100644 --- a/arch/x86/lib/pirq_routing.c +++ b/arch/x86/lib/pirq_routing.c @@ -14,7 +14,7 @@ static bool irq_already_routed[16]; -static u8 pirq_get_next_free_irq(u8 *pirq, u16 bitmap) +static u8 pirq_get_next_free_irq(struct udevice *dev, u8 *pirq, u16 bitmap) { int i, link; u8 irq = 0; @@ -33,7 +33,7 @@ static u8 pirq_get_next_free_irq(u8 *pirq, u16 bitmap) continue; for (link = 0; link < CONFIG_MAX_PIRQ_LINKS; link++) { - if (pirq_check_irq_routed(link, irq)) { + if (pirq_check_irq_routed(dev, link, irq)) { irq_already_routed[irq] = true; break; } @@ -52,7 +52,7 @@ static u8 pirq_get_next_free_irq(u8 *pirq, u16 bitmap) return irq; } -void pirq_route_irqs(struct irq_info *irq, int num) +void pirq_route_irqs(struct udevice *dev, struct irq_info *irq, int num) { unsigned char irq_slot[MAX_INTX_ENTRIES]; unsigned char pirq[CONFIG_MAX_PIRQ_LINKS]; @@ -80,11 +80,11 @@ void pirq_route_irqs(struct irq_info *irq, int num) } /* translate link value to link number */ - link = pirq_translate_link(link); + link = pirq_translate_link(dev, link); /* yet not routed */ if (!pirq[link]) { - irq = pirq_get_next_free_irq(pirq, bitmap); + irq = pirq_get_next_free_irq(dev, pirq, bitmap); pirq[link] = irq; } else { irq = pirq[link]; @@ -94,7 +94,7 @@ void pirq_route_irqs(struct irq_info *irq, int num) irq_slot[intx] = irq; /* Assign IRQ in the interrupt router */ - pirq_assign_irq(link, irq); + pirq_assign_irq(dev, link, irq); } /* Bus, device, slots IRQs for {A,B,C,D} */ -- 2.7.4