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 * $FreeBSD$ 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 102