From 03571e11c4a6d08230657f80970f0a5cc7820471 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 4 Oct 2006 02:17:00 -0700 Subject: [PATCH] msi: move the ia64 code into arch/ia64 This is just a few makefile tweaks and some file renames. Signed-off-by: Eric W. Biederman Cc: Ingo Molnar Cc: Tony Luck Cc: Andi Kleen Cc: Thomas Gleixner Cc: Greg KH Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/kernel/Makefile | 1 + arch/ia64/kernel/msi_ia64.c | 143 +++++++++++++++++++++++++++ arch/ia64/sn/kernel/Makefile | 1 + arch/ia64/sn/kernel/msi_sn.c | 230 +++++++++++++++++++++++++++++++++++++++++++ drivers/pci/Makefile | 9 +- drivers/pci/msi-altix.c | 230 ------------------------------------------- drivers/pci/msi-apic.c | 143 --------------------------- 7 files changed, 378 insertions(+), 379 deletions(-) create mode 100644 arch/ia64/kernel/msi_ia64.c create mode 100644 arch/ia64/sn/kernel/msi_sn.c delete mode 100644 drivers/pci/msi-altix.c delete mode 100644 drivers/pci/msi-apic.c diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 31497496eb4..cfa099b04cd 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_IA64_MCA_RECOVERY) += mca_recovery.o obj-$(CONFIG_KPROBES) += kprobes.o jprobes.o obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o obj-$(CONFIG_AUDIT) += audit.o +obj-$(CONFIG_PCI_MSI) += msi_ia64.o mca_recovery-y += mca_drv.o mca_drv_asm.o obj-$(CONFIG_IA64_ESI) += esi.o diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c new file mode 100644 index 00000000000..822e59a1b82 --- /dev/null +++ b/arch/ia64/kernel/msi_ia64.c @@ -0,0 +1,143 @@ +/* + * MSI hooks for standard x86 apic + */ + +#include +#include +#include +#include + +/* + * Shifts for APIC-based data + */ + +#define MSI_DATA_VECTOR_SHIFT 0 +#define MSI_DATA_VECTOR(v) (((u8)v) << MSI_DATA_VECTOR_SHIFT) + +#define MSI_DATA_DELIVERY_SHIFT 8 +#define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_SHIFT) +#define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_SHIFT) + +#define MSI_DATA_LEVEL_SHIFT 14 +#define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT) +#define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT) + +#define MSI_DATA_TRIGGER_SHIFT 15 +#define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT) +#define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT) + +/* + * Shift/mask fields for APIC-based bus address + */ + +#define MSI_TARGET_CPU_SHIFT 4 +#define MSI_ADDR_HEADER 0xfee00000 + +#define MSI_ADDR_DESTID_MASK 0xfff0000f +#define MSI_ADDR_DESTID_CPU(cpu) ((cpu) << MSI_TARGET_CPU_SHIFT) + +#define MSI_ADDR_DESTMODE_SHIFT 2 +#define MSI_ADDR_DESTMODE_PHYS (0 << MSI_ADDR_DESTMODE_SHIFT) +#define MSI_ADDR_DESTMODE_LOGIC (1 << MSI_ADDR_DESTMODE_SHIFT) + +#define MSI_ADDR_REDIRECTION_SHIFT 3 +#define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT) +#define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT) + +static struct irq_chip ia64_msi_chip; + +#ifdef CONFIG_SMP +static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask) +{ + struct msi_msg msg; + u32 addr; + + read_msi_msg(irq, &msg); + + addr = msg.address_lo; + addr &= MSI_ADDR_DESTID_MASK; + addr |= MSI_ADDR_DESTID_CPU(cpu_physical_id(first_cpu(cpu_mask))); + msg.address_lo = addr; + + write_msi_msg(irq, &msg); + set_native_irq_info(irq, cpu_mask); +} +#endif /* CONFIG_SMP */ + +int ia64_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) +{ + struct msi_msg msg; + unsigned long dest_phys_id; + unsigned int vector; + + dest_phys_id = cpu_physical_id(first_cpu(cpu_online_map)); + vector = irq; + + msg.address_hi = 0; + msg.address_lo = + MSI_ADDR_HEADER | + MSI_ADDR_DESTMODE_PHYS | + MSI_ADDR_REDIRECTION_CPU | + MSI_ADDR_DESTID_CPU(dest_phys_id); + + msg.data = + MSI_DATA_TRIGGER_EDGE | + MSI_DATA_LEVEL_ASSERT | + MSI_DATA_DELIVERY_FIXED | + MSI_DATA_VECTOR(vector); + + write_msi_msg(irq, &msg); + set_irq_chip_and_handler(irq, &ia64_msi_chip, handle_edge_irq); + + return 0; +} + +void ia64_teardown_msi_irq(unsigned int irq) +{ + return; /* no-op */ +} + +static void ia64_ack_msi_irq(unsigned int irq) +{ + move_native_irq(irq); + ia64_eoi(); +} + +static int ia64_msi_retrigger_irq(unsigned int irq) +{ + unsigned int vector = irq; + ia64_resend_irq(vector); + + return 1; +} + +/* + * Generic ops used on most IA64 platforms. + */ +static struct irq_chip ia64_msi_chip = { + .name = "PCI-MSI", + .mask = mask_msi_irq, + .unmask = unmask_msi_irq, + .ack = ia64_ack_msi_irq, +#ifdef CONFIG_SMP + .set_affinity = ia64_set_msi_irq_affinity, +#endif + .retrigger = ia64_msi_retrigger_irq, +}; + + +int arch_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) +{ + if (platform_setup_msi_irq) + return platform_setup_msi_irq(irq, pdev); + + return ia64_setup_msi_irq(irq, pdev); +} + +void arch_teardown_msi_irq(unsigned int irq) +{ + if (platform_teardown_msi_irq) + return platform_teardown_msi_irq(irq); + + return ia64_teardown_msi_irq(irq); +} diff --git a/arch/ia64/sn/kernel/Makefile b/arch/ia64/sn/kernel/Makefile index ab9c48c8801..2d78f34dd76 100644 --- a/arch/ia64/sn/kernel/Makefile +++ b/arch/ia64/sn/kernel/Makefile @@ -19,3 +19,4 @@ xp-y := xp_main.o xp_nofault.o obj-$(CONFIG_IA64_SGI_SN_XP) += xpc.o xpc-y := xpc_main.o xpc_channel.o xpc_partition.o obj-$(CONFIG_IA64_SGI_SN_XP) += xpnet.o +obj-$(CONFIG_PCI_MSI) += msi_sn.o diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c new file mode 100644 index 00000000000..6ffd1f850d4 --- /dev/null +++ b/arch/ia64/sn/kernel/msi_sn.c @@ -0,0 +1,230 @@ +/* + * 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) 2006 Silicon Graphics, Inc. All Rights Reserved. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +struct sn_msi_info { + u64 pci_addr; + struct sn_irq_info *sn_irq_info; +}; + +static struct sn_msi_info sn_msi_info[NR_IRQS]; + +static struct irq_chip sn_msi_chip; + +void sn_teardown_msi_irq(unsigned int irq) +{ + nasid_t nasid; + int widget; + struct pci_dev *pdev; + struct pcidev_info *sn_pdev; + struct sn_irq_info *sn_irq_info; + struct pcibus_bussoft *bussoft; + struct sn_pcibus_provider *provider; + + sn_irq_info = sn_msi_info[irq].sn_irq_info; + if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0) + return; + + sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo; + pdev = sn_pdev->pdi_linux_pcidev; + provider = SN_PCIDEV_BUSPROVIDER(pdev); + + (*provider->dma_unmap)(pdev, + sn_msi_info[irq].pci_addr, + PCI_DMA_FROMDEVICE); + sn_msi_info[irq].pci_addr = 0; + + bussoft = SN_PCIDEV_BUSSOFT(pdev); + nasid = NASID_GET(bussoft->bs_base); + widget = (nasid & 1) ? + TIO_SWIN_WIDGETNUM(bussoft->bs_base) : + SWIN_WIDGETNUM(bussoft->bs_base); + + sn_intr_free(nasid, widget, sn_irq_info); + sn_msi_info[irq].sn_irq_info = NULL; + + return; +} + +int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) +{ + struct msi_msg msg; + struct msi_desc *entry; + int widget; + int status; + nasid_t nasid; + u64 bus_addr; + struct sn_irq_info *sn_irq_info; + struct pcibus_bussoft *bussoft = SN_PCIDEV_BUSSOFT(pdev); + struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev); + + entry = get_irq_data(irq); + if (!entry->msi_attrib.is_64) + return -EINVAL; + + if (bussoft == NULL) + return -EINVAL; + + if (provider == NULL || provider->dma_map_consistent == NULL) + return -EINVAL; + + /* + * Set up the vector plumbing. Let the prom (via sn_intr_alloc) + * decide which cpu to direct this msi at by default. + */ + + nasid = NASID_GET(bussoft->bs_base); + widget = (nasid & 1) ? + TIO_SWIN_WIDGETNUM(bussoft->bs_base) : + SWIN_WIDGETNUM(bussoft->bs_base); + + sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); + if (! sn_irq_info) + return -ENOMEM; + + status = sn_intr_alloc(nasid, widget, sn_irq_info, irq, -1, -1); + if (status) { + kfree(sn_irq_info); + return -ENOMEM; + } + + sn_irq_info->irq_int_bit = -1; /* mark this as an MSI irq */ + sn_irq_fixup(pdev, sn_irq_info); + + /* Prom probably should fill these in, but doesn't ... */ + sn_irq_info->irq_bridge_type = bussoft->bs_asic_type; + sn_irq_info->irq_bridge = (void *)bussoft->bs_base; + + /* + * Map the xio address into bus space + */ + bus_addr = (*provider->dma_map_consistent)(pdev, + sn_irq_info->irq_xtalkaddr, + sizeof(sn_irq_info->irq_xtalkaddr), + SN_DMA_MSI|SN_DMA_ADDR_XIO); + if (! bus_addr) { + sn_intr_free(nasid, widget, sn_irq_info); + kfree(sn_irq_info); + return -ENOMEM; + } + + sn_msi_info[irq].sn_irq_info = sn_irq_info; + sn_msi_info[irq].pci_addr = bus_addr; + + msg.address_hi = (u32)(bus_addr >> 32); + msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff); + + /* + * In the SN platform, bit 16 is a "send vector" bit which + * must be present in order to move the vector through the system. + */ + msg.data = 0x100 + irq; + +#ifdef CONFIG_SMP + set_irq_affinity_info(irq, sn_irq_info->irq_cpuid, 0); +#endif + + write_msi_msg(irq, &msg); + set_irq_chip_and_handler(irq, &sn_msi_chip, handle_edge_irq); + + return 0; +} + +#ifdef CONFIG_SMP +static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask) +{ + struct msi_msg msg; + int slice; + nasid_t nasid; + u64 bus_addr; + struct pci_dev *pdev; + struct pcidev_info *sn_pdev; + struct sn_irq_info *sn_irq_info; + struct sn_irq_info *new_irq_info; + struct sn_pcibus_provider *provider; + unsigned int cpu; + + cpu = first_cpu(cpu_mask); + sn_irq_info = sn_msi_info[irq].sn_irq_info; + if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0) + return; + + /* + * Release XIO resources for the old MSI PCI address + */ + + read_msi_msg(irq, &msg); + sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo; + pdev = sn_pdev->pdi_linux_pcidev; + provider = SN_PCIDEV_BUSPROVIDER(pdev); + + bus_addr = (u64)(msg.address_hi) << 32 | (u64)(msg.address_lo); + (*provider->dma_unmap)(pdev, bus_addr, PCI_DMA_FROMDEVICE); + sn_msi_info[irq].pci_addr = 0; + + nasid = cpuid_to_nasid(cpu); + slice = cpuid_to_slice(cpu); + + new_irq_info = sn_retarget_vector(sn_irq_info, nasid, slice); + sn_msi_info[irq].sn_irq_info = new_irq_info; + if (new_irq_info == NULL) + return; + + /* + * Map the xio address into bus space + */ + + bus_addr = (*provider->dma_map_consistent)(pdev, + new_irq_info->irq_xtalkaddr, + sizeof(new_irq_info->irq_xtalkaddr), + SN_DMA_MSI|SN_DMA_ADDR_XIO); + + sn_msi_info[irq].pci_addr = bus_addr; + msg.address_hi = (u32)(bus_addr >> 32); + msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff); + + write_msi_msg(irq, &msg); + set_native_irq_info(irq, cpu_mask); +} +#endif /* CONFIG_SMP */ + +static void sn_ack_msi_irq(unsigned int irq) +{ + move_native_irq(irq); + ia64_eoi(); +} + +static int sn_msi_retrigger_irq(unsigned int irq) +{ + unsigned int vector = irq; + ia64_resend_irq(vector); + + return 1; +} + +static struct irq_chip sn_msi_chip = { + .name = "PCI-MSI", + .mask = mask_msi_irq, + .unmask = unmask_msi_irq, + .ack = sn_ack_msi_irq, +#ifdef CONFIG_SMP + .set_affinity = sn_set_msi_irq_affinity, +#endif + .retrigger = sn_msi_retrigger_irq, +}; diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 2752c57ecf0..04694ec7224 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -14,6 +14,9 @@ obj-$(CONFIG_HOTPLUG) += hotplug.o # Build the PCI Hotplug drivers if we were asked to obj-$(CONFIG_HOTPLUG_PCI) += hotplug/ +# Build the PCI MSI interrupt support +obj-$(CONFIG_PCI_MSI) += msi.o + # # Some architectures use the generic PCI setup functions # @@ -28,12 +31,6 @@ obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o obj-$(CONFIG_X86_VISWS) += setup-irq.o obj-$(CONFIG_HT_IRQ) += htirq.o -msiobj-y := msi.o -msiobj-$(CONFIG_IA64) += msi-apic.o -msiobj-$(CONFIG_IA64_GENERIC) += msi-altix.o -msiobj-$(CONFIG_IA64_SGI_SN2) += msi-altix.o -obj-$(CONFIG_PCI_MSI) += $(msiobj-y) - # # ACPI Related PCI FW Functions # diff --git a/drivers/pci/msi-altix.c b/drivers/pci/msi-altix.c deleted file mode 100644 index 6ffd1f850d4..00000000000 --- a/drivers/pci/msi-altix.c +++ /dev/null @@ -1,230 +0,0 @@ -/* - * 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) 2006 Silicon Graphics, Inc. All Rights Reserved. - */ - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -struct sn_msi_info { - u64 pci_addr; - struct sn_irq_info *sn_irq_info; -}; - -static struct sn_msi_info sn_msi_info[NR_IRQS]; - -static struct irq_chip sn_msi_chip; - -void sn_teardown_msi_irq(unsigned int irq) -{ - nasid_t nasid; - int widget; - struct pci_dev *pdev; - struct pcidev_info *sn_pdev; - struct sn_irq_info *sn_irq_info; - struct pcibus_bussoft *bussoft; - struct sn_pcibus_provider *provider; - - sn_irq_info = sn_msi_info[irq].sn_irq_info; - if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0) - return; - - sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo; - pdev = sn_pdev->pdi_linux_pcidev; - provider = SN_PCIDEV_BUSPROVIDER(pdev); - - (*provider->dma_unmap)(pdev, - sn_msi_info[irq].pci_addr, - PCI_DMA_FROMDEVICE); - sn_msi_info[irq].pci_addr = 0; - - bussoft = SN_PCIDEV_BUSSOFT(pdev); - nasid = NASID_GET(bussoft->bs_base); - widget = (nasid & 1) ? - TIO_SWIN_WIDGETNUM(bussoft->bs_base) : - SWIN_WIDGETNUM(bussoft->bs_base); - - sn_intr_free(nasid, widget, sn_irq_info); - sn_msi_info[irq].sn_irq_info = NULL; - - return; -} - -int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) -{ - struct msi_msg msg; - struct msi_desc *entry; - int widget; - int status; - nasid_t nasid; - u64 bus_addr; - struct sn_irq_info *sn_irq_info; - struct pcibus_bussoft *bussoft = SN_PCIDEV_BUSSOFT(pdev); - struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev); - - entry = get_irq_data(irq); - if (!entry->msi_attrib.is_64) - return -EINVAL; - - if (bussoft == NULL) - return -EINVAL; - - if (provider == NULL || provider->dma_map_consistent == NULL) - return -EINVAL; - - /* - * Set up the vector plumbing. Let the prom (via sn_intr_alloc) - * decide which cpu to direct this msi at by default. - */ - - nasid = NASID_GET(bussoft->bs_base); - widget = (nasid & 1) ? - TIO_SWIN_WIDGETNUM(bussoft->bs_base) : - SWIN_WIDGETNUM(bussoft->bs_base); - - sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); - if (! sn_irq_info) - return -ENOMEM; - - status = sn_intr_alloc(nasid, widget, sn_irq_info, irq, -1, -1); - if (status) { - kfree(sn_irq_info); - return -ENOMEM; - } - - sn_irq_info->irq_int_bit = -1; /* mark this as an MSI irq */ - sn_irq_fixup(pdev, sn_irq_info); - - /* Prom probably should fill these in, but doesn't ... */ - sn_irq_info->irq_bridge_type = bussoft->bs_asic_type; - sn_irq_info->irq_bridge = (void *)bussoft->bs_base; - - /* - * Map the xio address into bus space - */ - bus_addr = (*provider->dma_map_consistent)(pdev, - sn_irq_info->irq_xtalkaddr, - sizeof(sn_irq_info->irq_xtalkaddr), - SN_DMA_MSI|SN_DMA_ADDR_XIO); - if (! bus_addr) { - sn_intr_free(nasid, widget, sn_irq_info); - kfree(sn_irq_info); - return -ENOMEM; - } - - sn_msi_info[irq].sn_irq_info = sn_irq_info; - sn_msi_info[irq].pci_addr = bus_addr; - - msg.address_hi = (u32)(bus_addr >> 32); - msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff); - - /* - * In the SN platform, bit 16 is a "send vector" bit which - * must be present in order to move the vector through the system. - */ - msg.data = 0x100 + irq; - -#ifdef CONFIG_SMP - set_irq_affinity_info(irq, sn_irq_info->irq_cpuid, 0); -#endif - - write_msi_msg(irq, &msg); - set_irq_chip_and_handler(irq, &sn_msi_chip, handle_edge_irq); - - return 0; -} - -#ifdef CONFIG_SMP -static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask) -{ - struct msi_msg msg; - int slice; - nasid_t nasid; - u64 bus_addr; - struct pci_dev *pdev; - struct pcidev_info *sn_pdev; - struct sn_irq_info *sn_irq_info; - struct sn_irq_info *new_irq_info; - struct sn_pcibus_provider *provider; - unsigned int cpu; - - cpu = first_cpu(cpu_mask); - sn_irq_info = sn_msi_info[irq].sn_irq_info; - if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0) - return; - - /* - * Release XIO resources for the old MSI PCI address - */ - - read_msi_msg(irq, &msg); - sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo; - pdev = sn_pdev->pdi_linux_pcidev; - provider = SN_PCIDEV_BUSPROVIDER(pdev); - - bus_addr = (u64)(msg.address_hi) << 32 | (u64)(msg.address_lo); - (*provider->dma_unmap)(pdev, bus_addr, PCI_DMA_FROMDEVICE); - sn_msi_info[irq].pci_addr = 0; - - nasid = cpuid_to_nasid(cpu); - slice = cpuid_to_slice(cpu); - - new_irq_info = sn_retarget_vector(sn_irq_info, nasid, slice); - sn_msi_info[irq].sn_irq_info = new_irq_info; - if (new_irq_info == NULL) - return; - - /* - * Map the xio address into bus space - */ - - bus_addr = (*provider->dma_map_consistent)(pdev, - new_irq_info->irq_xtalkaddr, - sizeof(new_irq_info->irq_xtalkaddr), - SN_DMA_MSI|SN_DMA_ADDR_XIO); - - sn_msi_info[irq].pci_addr = bus_addr; - msg.address_hi = (u32)(bus_addr >> 32); - msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff); - - write_msi_msg(irq, &msg); - set_native_irq_info(irq, cpu_mask); -} -#endif /* CONFIG_SMP */ - -static void sn_ack_msi_irq(unsigned int irq) -{ - move_native_irq(irq); - ia64_eoi(); -} - -static int sn_msi_retrigger_irq(unsigned int irq) -{ - unsigned int vector = irq; - ia64_resend_irq(vector); - - return 1; -} - -static struct irq_chip sn_msi_chip = { - .name = "PCI-MSI", - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, - .ack = sn_ack_msi_irq, -#ifdef CONFIG_SMP - .set_affinity = sn_set_msi_irq_affinity, -#endif - .retrigger = sn_msi_retrigger_irq, -}; diff --git a/drivers/pci/msi-apic.c b/drivers/pci/msi-apic.c deleted file mode 100644 index 822e59a1b82..00000000000 --- a/drivers/pci/msi-apic.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * MSI hooks for standard x86 apic - */ - -#include -#include -#include -#include - -/* - * Shifts for APIC-based data - */ - -#define MSI_DATA_VECTOR_SHIFT 0 -#define MSI_DATA_VECTOR(v) (((u8)v) << MSI_DATA_VECTOR_SHIFT) - -#define MSI_DATA_DELIVERY_SHIFT 8 -#define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_SHIFT) -#define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_SHIFT) - -#define MSI_DATA_LEVEL_SHIFT 14 -#define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT) -#define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT) - -#define MSI_DATA_TRIGGER_SHIFT 15 -#define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT) -#define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT) - -/* - * Shift/mask fields for APIC-based bus address - */ - -#define MSI_TARGET_CPU_SHIFT 4 -#define MSI_ADDR_HEADER 0xfee00000 - -#define MSI_ADDR_DESTID_MASK 0xfff0000f -#define MSI_ADDR_DESTID_CPU(cpu) ((cpu) << MSI_TARGET_CPU_SHIFT) - -#define MSI_ADDR_DESTMODE_SHIFT 2 -#define MSI_ADDR_DESTMODE_PHYS (0 << MSI_ADDR_DESTMODE_SHIFT) -#define MSI_ADDR_DESTMODE_LOGIC (1 << MSI_ADDR_DESTMODE_SHIFT) - -#define MSI_ADDR_REDIRECTION_SHIFT 3 -#define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT) -#define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT) - -static struct irq_chip ia64_msi_chip; - -#ifdef CONFIG_SMP -static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask) -{ - struct msi_msg msg; - u32 addr; - - read_msi_msg(irq, &msg); - - addr = msg.address_lo; - addr &= MSI_ADDR_DESTID_MASK; - addr |= MSI_ADDR_DESTID_CPU(cpu_physical_id(first_cpu(cpu_mask))); - msg.address_lo = addr; - - write_msi_msg(irq, &msg); - set_native_irq_info(irq, cpu_mask); -} -#endif /* CONFIG_SMP */ - -int ia64_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) -{ - struct msi_msg msg; - unsigned long dest_phys_id; - unsigned int vector; - - dest_phys_id = cpu_physical_id(first_cpu(cpu_online_map)); - vector = irq; - - msg.address_hi = 0; - msg.address_lo = - MSI_ADDR_HEADER | - MSI_ADDR_DESTMODE_PHYS | - MSI_ADDR_REDIRECTION_CPU | - MSI_ADDR_DESTID_CPU(dest_phys_id); - - msg.data = - MSI_DATA_TRIGGER_EDGE | - MSI_DATA_LEVEL_ASSERT | - MSI_DATA_DELIVERY_FIXED | - MSI_DATA_VECTOR(vector); - - write_msi_msg(irq, &msg); - set_irq_chip_and_handler(irq, &ia64_msi_chip, handle_edge_irq); - - return 0; -} - -void ia64_teardown_msi_irq(unsigned int irq) -{ - return; /* no-op */ -} - -static void ia64_ack_msi_irq(unsigned int irq) -{ - move_native_irq(irq); - ia64_eoi(); -} - -static int ia64_msi_retrigger_irq(unsigned int irq) -{ - unsigned int vector = irq; - ia64_resend_irq(vector); - - return 1; -} - -/* - * Generic ops used on most IA64 platforms. - */ -static struct irq_chip ia64_msi_chip = { - .name = "PCI-MSI", - .mask = mask_msi_irq, - .unmask = unmask_msi_irq, - .ack = ia64_ack_msi_irq, -#ifdef CONFIG_SMP - .set_affinity = ia64_set_msi_irq_affinity, -#endif - .retrigger = ia64_msi_retrigger_irq, -}; - - -int arch_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) -{ - if (platform_setup_msi_irq) - return platform_setup_msi_irq(irq, pdev); - - return ia64_setup_msi_irq(irq, pdev); -} - -void arch_teardown_msi_irq(unsigned int irq) -{ - if (platform_teardown_msi_irq) - return platform_teardown_msi_irq(irq); - - return ia64_teardown_msi_irq(irq); -} -- cgit v1.2.3