1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * This software was developed by Konstantin Belousov under sponsorship from 8 * the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #ifndef AGP_AGP_I810_H 35 #define AGP_AGP_I810_H 36 37 #include <sys/param.h> 38 #include <sys/rman.h> 39 #include <sys/sglist.h> 40 41 #include <vm/vm.h> 42 #include <vm/vm_page.h> 43 44 /* Special gtt memory types */ 45 #define AGP_DCACHE_MEMORY 1 46 #define AGP_PHYS_MEMORY 2 47 48 /* New caching attributes for gen6/sandybridge */ 49 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2) 50 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4) 51 52 /* flag for GFDT type */ 53 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3) 54 55 struct intel_gtt { 56 /* Size of memory reserved for graphics by the BIOS */ 57 unsigned int stolen_size; 58 /* Total number of gtt entries. */ 59 unsigned int gtt_total_entries; 60 /* Part of the gtt that is mappable by the cpu, for those chips where 61 * this is not the full gtt. */ 62 unsigned int gtt_mappable_entries; 63 /* Whether i915 needs to use the dmar apis or not. */ 64 unsigned int needs_dmar : 1; 65 /* Whether we idle the gpu before mapping/unmapping */ 66 unsigned int do_idle_maps : 1; 67 /* Share the scratch page dma with ppgtts. */ 68 vm_paddr_t scratch_page_dma; 69 vm_page_t scratch_page; 70 /* for ppgtt PDE access */ 71 uint32_t *gtt; 72 /* needed for ioremap in drm/i915 */ 73 bus_addr_t gma_bus_addr; 74 }; 75 76 struct intel_gtt agp_intel_gtt_get(device_t dev); 77 int agp_intel_gtt_chipset_flush(device_t dev); 78 void agp_intel_gtt_unmap_memory(device_t dev, struct sglist *sg_list); 79 void agp_intel_gtt_clear_range(device_t dev, u_int first_entry, 80 u_int num_entries); 81 int agp_intel_gtt_map_memory(device_t dev, vm_page_t *pages, u_int num_entries, 82 struct sglist **sg_list); 83 void agp_intel_gtt_insert_sg_entries(device_t dev, struct sglist *sg_list, 84 u_int pg_start, u_int flags); 85 void agp_intel_gtt_insert_pages(device_t dev, u_int first_entry, 86 u_int num_entries, vm_page_t *pages, u_int flags); 87 88 struct intel_gtt *intel_gtt_get(void); 89 int intel_gtt_chipset_flush(void); 90 void intel_gtt_unmap_memory(struct sglist *sg_list); 91 void intel_gtt_clear_range(u_int first_entry, u_int num_entries); 92 void intel_gtt_install_pte(u_int index, vm_paddr_t addr, u_int flags); 93 int intel_gtt_map_memory(vm_page_t *pages, u_int num_entries, 94 struct sglist **sg_list); 95 void intel_gtt_insert_sg_entries(struct sglist *sg_list, u_int pg_start, 96 u_int flags); 97 void intel_gtt_insert_pages(u_int first_entry, u_int num_entries, 98 vm_page_t *pages, u_int flags); 99 vm_paddr_t intel_gtt_read_pte_paddr(u_int entry); 100 u_int32_t intel_gtt_read_pte(u_int entry); 101 device_t intel_gtt_get_bridge_device(void); 102 void intel_gtt_write(u_int entry, uint32_t val); 103 104 #endif 105