3b7d1921f4
It turns out msi_ops was simply not enough to abstract the architecture specific details of msi. So I have moved the resposibility of constructing the struct irq_chip to the architectures, and have two architecture specific functions arch_setup_msi_irq, and arch_teardown_msi_irq. For simple architectures those functions can do all of the work. For architectures with platform dependencies they can call into the appropriate platform code. With this msi.c is finally free of assuming you have an apic, and this actually takes less code. The helpers for the architecture specific code are declared in the linux/msi.h to keep them separate from the msi functions used by drivers in linux/pci.h Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tony Luck <tony.luck@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
134 lines
5.6 KiB
C
134 lines
5.6 KiB
C
/*
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* Copyright (c) 2002-2003,2006 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/NoticeExplan
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*/
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#ifndef _ASM_IA64_MACHVEC_SN2_H
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#define _ASM_IA64_MACHVEC_SN2_H
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extern ia64_mv_setup_t sn_setup;
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extern ia64_mv_cpu_init_t sn_cpu_init;
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extern ia64_mv_irq_init_t sn_irq_init;
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extern ia64_mv_send_ipi_t sn2_send_IPI;
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extern ia64_mv_timer_interrupt_t sn_timer_interrupt;
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extern ia64_mv_global_tlb_purge_t sn2_global_tlb_purge;
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extern ia64_mv_tlb_migrate_finish_t sn_tlb_migrate_finish;
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extern ia64_mv_local_vector_to_irq sn_local_vector_to_irq;
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extern ia64_mv_pci_get_legacy_mem_t sn_pci_get_legacy_mem;
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extern ia64_mv_pci_legacy_read_t sn_pci_legacy_read;
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extern ia64_mv_pci_legacy_write_t sn_pci_legacy_write;
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extern ia64_mv_inb_t __sn_inb;
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extern ia64_mv_inw_t __sn_inw;
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extern ia64_mv_inl_t __sn_inl;
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extern ia64_mv_outb_t __sn_outb;
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extern ia64_mv_outw_t __sn_outw;
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extern ia64_mv_outl_t __sn_outl;
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extern ia64_mv_mmiowb_t __sn_mmiowb;
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extern ia64_mv_readb_t __sn_readb;
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extern ia64_mv_readw_t __sn_readw;
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extern ia64_mv_readl_t __sn_readl;
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extern ia64_mv_readq_t __sn_readq;
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extern ia64_mv_readb_t __sn_readb_relaxed;
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extern ia64_mv_readw_t __sn_readw_relaxed;
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extern ia64_mv_readl_t __sn_readl_relaxed;
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extern ia64_mv_readq_t __sn_readq_relaxed;
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extern ia64_mv_dma_alloc_coherent sn_dma_alloc_coherent;
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extern ia64_mv_dma_free_coherent sn_dma_free_coherent;
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extern ia64_mv_dma_map_single sn_dma_map_single;
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extern ia64_mv_dma_unmap_single sn_dma_unmap_single;
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extern ia64_mv_dma_map_sg sn_dma_map_sg;
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extern ia64_mv_dma_unmap_sg sn_dma_unmap_sg;
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extern ia64_mv_dma_sync_single_for_cpu sn_dma_sync_single_for_cpu;
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extern ia64_mv_dma_sync_sg_for_cpu sn_dma_sync_sg_for_cpu;
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extern ia64_mv_dma_sync_single_for_device sn_dma_sync_single_for_device;
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extern ia64_mv_dma_sync_sg_for_device sn_dma_sync_sg_for_device;
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extern ia64_mv_dma_mapping_error sn_dma_mapping_error;
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extern ia64_mv_dma_supported sn_dma_supported;
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extern ia64_mv_migrate_t sn_migrate;
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extern ia64_mv_setup_msi_irq_t sn_setup_msi_irq;
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extern ia64_mv_teardown_msi_irq_t sn_teardown_msi_irq;
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/*
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* This stuff has dual use!
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*
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* For a generic kernel, the macros are used to initialize the
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* platform's machvec structure. When compiling a non-generic kernel,
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* the macros are used directly.
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*/
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#define platform_name "sn2"
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#define platform_setup sn_setup
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#define platform_cpu_init sn_cpu_init
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#define platform_irq_init sn_irq_init
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#define platform_send_ipi sn2_send_IPI
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#define platform_timer_interrupt sn_timer_interrupt
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#define platform_global_tlb_purge sn2_global_tlb_purge
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#define platform_tlb_migrate_finish sn_tlb_migrate_finish
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#define platform_pci_fixup sn_pci_fixup
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#define platform_inb __sn_inb
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#define platform_inw __sn_inw
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#define platform_inl __sn_inl
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#define platform_outb __sn_outb
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#define platform_outw __sn_outw
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#define platform_outl __sn_outl
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#define platform_mmiowb __sn_mmiowb
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#define platform_readb __sn_readb
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#define platform_readw __sn_readw
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#define platform_readl __sn_readl
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#define platform_readq __sn_readq
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#define platform_readb_relaxed __sn_readb_relaxed
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#define platform_readw_relaxed __sn_readw_relaxed
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#define platform_readl_relaxed __sn_readl_relaxed
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#define platform_readq_relaxed __sn_readq_relaxed
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#define platform_local_vector_to_irq sn_local_vector_to_irq
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#define platform_pci_get_legacy_mem sn_pci_get_legacy_mem
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#define platform_pci_legacy_read sn_pci_legacy_read
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#define platform_pci_legacy_write sn_pci_legacy_write
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#define platform_dma_init machvec_noop
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#define platform_dma_alloc_coherent sn_dma_alloc_coherent
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#define platform_dma_free_coherent sn_dma_free_coherent
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#define platform_dma_map_single sn_dma_map_single
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#define platform_dma_unmap_single sn_dma_unmap_single
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#define platform_dma_map_sg sn_dma_map_sg
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#define platform_dma_unmap_sg sn_dma_unmap_sg
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#define platform_dma_sync_single_for_cpu sn_dma_sync_single_for_cpu
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#define platform_dma_sync_sg_for_cpu sn_dma_sync_sg_for_cpu
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#define platform_dma_sync_single_for_device sn_dma_sync_single_for_device
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#define platform_dma_sync_sg_for_device sn_dma_sync_sg_for_device
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#define platform_dma_mapping_error sn_dma_mapping_error
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#define platform_dma_supported sn_dma_supported
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#define platform_migrate sn_migrate
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#ifdef CONFIG_PCI_MSI
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#define platform_setup_msi_irq sn_setup_msi_irq
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#define platform_teardown_msi_irq sn_teardown_msi_irq
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#else
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#define platform_setup_msi_irq ((ia64_mv_setup_msi_irq_t*)NULL)
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#define platform_teardown_msi_irq ((ia64_mv_teardown_msi_irq_t*)NULL)
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#endif
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#include <asm/sn/io.h>
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#endif /* _ASM_IA64_MACHVEC_SN2_H */
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