The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/agp/agp_i810.h

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    1 /*-
    2  * Copyright (c) 2011 The FreeBSD Foundation
    3  * All rights reserved.
    4  *
    5  * This software was developed by Konstantin Belousov under sponsorship from
    6  * the FreeBSD Foundation.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/9.1/sys/dev/agp/agp_i810.h 236926 2012-06-11 21:33:02Z kib $
   30  */
   31 
   32 #ifndef AGP_AGP_I810_H
   33 #define AGP_AGP_I810_H
   34 
   35 #include <sys/param.h>
   36 #include <sys/sglist.h>
   37 
   38 #include <vm/vm.h>
   39 #include <vm/vm_page.h>
   40 
   41 /* Special gtt memory types */
   42 #define AGP_DCACHE_MEMORY       1
   43 #define AGP_PHYS_MEMORY         2
   44 
   45 /* New caching attributes for gen6/sandybridge */
   46 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
   47 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
   48 
   49 /* flag for GFDT type */
   50 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
   51 
   52 struct intel_gtt {
   53         /* Size of memory reserved for graphics by the BIOS */
   54         u_int stolen_size;
   55         /* Total number of gtt entries. */
   56         u_int gtt_total_entries;
   57         /*
   58          * Part of the gtt that is mappable by the cpu, for those
   59          * chips where this is not the full gtt.
   60          */
   61         u_int gtt_mappable_entries;
   62 
   63         /*
   64          * Always false.
   65          */
   66         u_int do_idle_maps;
   67         
   68         /*
   69          * Share the scratch page dma with ppgtts.
   70          */
   71         vm_paddr_t scratch_page_dma;
   72 };
   73 
   74 struct intel_gtt agp_intel_gtt_get(device_t dev);
   75 int agp_intel_gtt_chipset_flush(device_t dev);
   76 void agp_intel_gtt_unmap_memory(device_t dev, struct sglist *sg_list);
   77 void agp_intel_gtt_clear_range(device_t dev, u_int first_entry,
   78     u_int num_entries);
   79 int agp_intel_gtt_map_memory(device_t dev, vm_page_t *pages, u_int num_entries,
   80     struct sglist **sg_list);
   81 void agp_intel_gtt_insert_sg_entries(device_t dev, struct sglist *sg_list,
   82     u_int pg_start, u_int flags);
   83 void agp_intel_gtt_insert_pages(device_t dev, u_int first_entry,
   84     u_int num_entries, vm_page_t *pages, u_int flags);
   85 
   86 struct intel_gtt intel_gtt_get(void);
   87 int intel_gtt_chipset_flush(void);
   88 void intel_gtt_unmap_memory(struct sglist *sg_list);
   89 void intel_gtt_clear_range(u_int first_entry, u_int num_entries);
   90 int intel_gtt_map_memory(vm_page_t *pages, u_int num_entries,
   91     struct sglist **sg_list);
   92 void intel_gtt_insert_sg_entries(struct sglist *sg_list, u_int pg_start,
   93     u_int flags);
   94 void intel_gtt_insert_pages(u_int first_entry, u_int num_entries,
   95     vm_page_t *pages, u_int flags);
   96 vm_paddr_t intel_gtt_read_pte_paddr(u_int entry);
   97 u_int32_t intel_gtt_read_pte(u_int entry);
   98 device_t intel_gtt_get_bridge_device(void);
   99 void intel_gtt_write(u_int entry, uint32_t val);
  100 
  101 #endif

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