1 /* 2 * Copyright (c) 2011 The FreeBSD Foundation 3 * Copyright (c) 2015-2017 François Tigeot 4 * All rights reserved. 5 * 6 * This software was developed by Konstantin Belousov under sponsorship from 7 * the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _AGP_INTEL_GTT_H_ 32 #define _AGP_INTEL_GTT_H_ 33 34 #include <sys/param.h> 35 36 #include <vm/vm.h> 37 #include <vm/vm_page.h> 38 39 #include <linux/types.h> 40 #include <linux/scatterlist.h> 41 42 /* Special gtt memory types */ 43 #define AGP_DCACHE_MEMORY 1 44 #define AGP_PHYS_MEMORY 2 45 46 /* New caching attributes for gen6/sandybridge */ 47 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2) 48 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4) 49 50 /* flag for GFDT type */ 51 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3) 52 53 struct intel_gtt { 54 /* Size of memory reserved for graphics by the BIOS */ 55 u_int stolen_size; 56 /* Total number of gtt entries. */ 57 u_int gtt_total_entries; 58 /* Part of the gtt that is mappable by the cpu, for those chips where 59 * this is not the full gtt. */ 60 u_int gtt_mappable_entries; 61 /* Whether we idle the gpu before mapping/unmapping */ 62 unsigned int do_idle_maps : 1; 63 /* Share the scratch page dma with ppgtts. */ 64 vm_paddr_t scratch_page_dma; 65 struct vm_page *scratch_page; 66 /* for ppgtt PDE access */ 67 uint32_t *gtt; 68 /* needed for ioremap in drm/i915 */ 69 bus_addr_t gma_bus_addr; 70 }; 71 72 struct intel_gtt agp_intel_gtt_get(device_t dev); 73 int agp_intel_gtt_chipset_flush(device_t dev); 74 void agp_intel_gtt_clear_range(device_t dev, u_int first_entry, 75 u_int num_entries); 76 void agp_intel_gtt_insert_pages(device_t dev, u_int first_entry, 77 u_int num_entries, vm_page_t *pages, u_int flags); 78 79 void intel_gtt_get(u64 *gtt_total, size_t *stolen_size, 80 phys_addr_t *mappable_base, u64 *mappable_end); 81 82 int intel_gtt_chipset_flush(void); 83 void intel_gtt_clear_range(u_int first_entry, u_int num_entries); 84 85 void intel_gtt_insert_sg_entries(struct sg_table *st, 86 unsigned int pg_start, 87 unsigned int flags); 88 89 void intel_gtt_sync_pte(u_int entry); 90 void intel_gtt_write(u_int entry, uint32_t val); 91 92 static inline void intel_gmch_remove(void) 93 { 94 } 95 96 bool intel_enable_gtt(void); 97 98 #endif /* _AGP_INTEL_GTT_H_ */ 99