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kernel/linux-rt-4.4.41/arch/ia64/include/asm/sn/tioce_provider.h 1.49 KB
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  /*
   * 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) 2003-2005 Silicon Graphics, Inc. All rights reserved.
   */
  
  #ifndef _ASM_IA64_SN_CE_PROVIDER_H
  #define _ASM_IA64_SN_CE_PROVIDER_H
  
  #include <asm/sn/pcibus_provider_defs.h>
  #include <asm/sn/tioce.h>
  
  /*
   * Common TIOCE structure shared between the prom and kernel
   *
   * DO NOT CHANGE THIS STRUCT WITHOUT MAKING CORRESPONDING CHANGES TO THE
   * PROM VERSION.
   */
  struct tioce_common {
  	struct pcibus_bussoft	ce_pcibus;	/* common pciio header */
  
  	u32		ce_rev;
  	u64		ce_kernel_private;
  	u64		ce_prom_private;
  };
  
  struct tioce_kernel {
  	struct tioce_common	*ce_common;
  	spinlock_t		ce_lock;
  	struct list_head	ce_dmamap_list;
  
  	u64		ce_ate40_shadow[TIOCE_NUM_M40_ATES];
  	u64		ce_ate3240_shadow[TIOCE_NUM_M3240_ATES];
  	u32		ce_ate3240_pagesize;
  
  	u8			ce_port1_secondary;
  
  	/* per-port resources */
  	struct {
  		int 		dirmap_refcnt;
  		u64	dirmap_shadow;
  	} ce_port[TIOCE_NUM_PORTS];
  };
  
  struct tioce_dmamap {
  	struct list_head	ce_dmamap_list;	/* headed by tioce_kernel */
  	u32		refcnt;
  
  	u64		nbytes;		/* # bytes mapped */
  
  	u64		ct_start;	/* coretalk start address */
  	u64		pci_start;	/* bus start address */
  
  	u64		__iomem *ate_hw;/* hw ptr of first ate in map */
  	u64		*ate_shadow;	/* shadow ptr of firat ate */
  	u16		ate_count;	/* # ate's in the map */
  };
  
  extern int tioce_init_provider(void);
  
  #endif  /* __ASM_IA64_SN_CE_PROVIDER_H */