diff options
Diffstat (limited to 'drivers/pci/msi-altix.c')
| -rw-r--r-- | drivers/pci/msi-altix.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/drivers/pci/msi-altix.c b/drivers/pci/msi-altix.c deleted file mode 100644 index bed4183a5e3..00000000000 --- a/drivers/pci/msi-altix.c +++ /dev/null @@ -1,210 +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/pci.h> -#include <linux/cpumask.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> - -#include "msi.h" - -struct sn_msi_info { - u64 pci_addr; - struct sn_irq_info *sn_irq_info; -}; - -static struct sn_msi_info *sn_msi_info; - -static void -sn_msi_teardown(unsigned int vector) -{ - 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[vector].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[vector].pci_addr, - PCI_DMA_FROMDEVICE); - sn_msi_info[vector].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[vector].sn_irq_info = NULL; - - return; -} - -int -sn_msi_setup(struct pci_dev *pdev, unsigned int vector, - u32 *addr_hi, u32 *addr_lo, u32 *data) -{ - 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); - - 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, vector, -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[vector].sn_irq_info = sn_irq_info; - sn_msi_info[vector].pci_addr = bus_addr; - - *addr_hi = (u32)(bus_addr >> 32); - *addr_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. - */ - *data = 0x100 + (unsigned int)vector; - -#ifdef CONFIG_SMP - set_irq_affinity_info((vector & 0xff), sn_irq_info->irq_cpuid, 0); -#endif - - return 0; -} - -static void -sn_msi_target(unsigned int vector, unsigned int cpu, - u32 *addr_hi, u32 *addr_lo) -{ - 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; - - sn_irq_info = sn_msi_info[vector].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 - */ - - sn_pdev = (struct pcidev_info *)sn_irq_info->irq_pciioinfo; - pdev = sn_pdev->pdi_linux_pcidev; - provider = SN_PCIDEV_BUSPROVIDER(pdev); - - bus_addr = (u64)(*addr_hi) << 32 | (u64)(*addr_lo); - (*provider->dma_unmap)(pdev, bus_addr, PCI_DMA_FROMDEVICE); - sn_msi_info[vector].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[vector].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[vector].pci_addr = bus_addr; - *addr_hi = (u32)(bus_addr >> 32); - *addr_lo = (u32)(bus_addr & 0x00000000ffffffff); -} - -struct msi_ops sn_msi_ops = { - .setup = sn_msi_setup, - .teardown = sn_msi_teardown, -#ifdef CONFIG_SMP - .target = sn_msi_target, -#endif -}; - -int -sn_msi_init(void) -{ - sn_msi_info = - kzalloc(sizeof(struct sn_msi_info) * NR_VECTORS, GFP_KERNEL); - if (! sn_msi_info) - return -ENOMEM; - - msi_register(&sn_msi_ops); - return 0; -} |