diff options
Diffstat (limited to 'drivers/pci/msi-altix.c')
| -rw-r--r-- | drivers/pci/msi-altix.c | 230 |
1 files changed, 0 insertions, 230 deletions
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 <linux/types.h> -#include <linux/irq.h> -#include <linux/pci.h> -#include <linux/cpumask.h> -#include <linux/msi.h> - -#include <asm/sn/addrs.h> -#include <asm/sn/intr.h> -#include <asm/sn/pcibus_provider_defs.h> -#include <asm/sn/pcidev.h> -#include <asm/sn/nodepda.h> - -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, -}; |