1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/debug.h> 28 #include <sys/types.h> 29 #include <sys/param.h> 30 #include <sys/time.h> 31 #include <sys/buf.h> 32 #include <sys/errno.h> 33 #include <sys/systm.h> 34 #include <sys/conf.h> 35 #include <sys/signal.h> 36 #include <vm/page.h> 37 #include <vm/as.h> 38 #include <vm/hat.h> 39 #include <vm/seg.h> 40 #include <vm/seg_dev.h> 41 #include <vm/hat_i86.h> 42 #include <sys/ddi.h> 43 #include <sys/devops.h> 44 #include <sys/sunddi.h> 45 #include <sys/ddi_impldefs.h> 46 #include <sys/fs/snode.h> 47 #include <sys/pci.h> 48 #include <sys/vmsystm.h> 49 #include <sys/int_fmtio.h> 50 #include "gfx_private.h" 51 52 #ifdef __xpv 53 #include <sys/hypervisor.h> 54 #endif 55 56 /* 57 * Create a dummy ddi_umem_cookie given to gfxp_devmap_umem_setup(). 58 */ 59 ddi_umem_cookie_t 60 gfxp_umem_cookie_init(caddr_t kva, size_t size) 61 { 62 struct ddi_umem_cookie *umem_cookie; 63 64 umem_cookie = kmem_zalloc(sizeof (struct ddi_umem_cookie), KM_SLEEP); 65 66 if (umem_cookie == NULL) 67 return (NULL); 68 69 umem_cookie->cvaddr = kva; 70 umem_cookie->type = KMEM_NON_PAGEABLE; 71 umem_cookie->size = size; 72 73 return ((ddi_umem_cookie_t)umem_cookie); 74 } 75 76 void 77 gfxp_umem_cookie_destroy(ddi_umem_cookie_t cookie) 78 { 79 kmem_free(cookie, sizeof (struct ddi_umem_cookie)); 80 } 81 82 /* 83 * called by driver devmap routine to pass kernel virtual address mapping 84 * info to the framework. 85 */ 86 /*ARGSUSED*/ 87 int 88 gfxp_devmap_umem_setup(devmap_cookie_t dhc, dev_info_t *dip, 89 struct devmap_callback_ctl *callbackops, ddi_umem_cookie_t cookie, 90 offset_t off, size_t len, uint_t maxprot, uint_t flags, 91 ddi_device_acc_attr_t *accattrp) 92 { 93 uint_t l_flags = flags & ~IOMEM_DATA_MASK; /* clear cache attrs */ 94 int e; 95 96 /* 97 * Set an appropriate attribute from devacc_attr_dataorder 98 * to keep compatibility. The cache attributes are igonred 99 * if specified. 100 */ 101 if (accattrp != NULL) { 102 if (accattrp->devacc_attr_dataorder == DDI_STRICTORDER_ACC) { 103 l_flags |= IOMEM_DATA_UNCACHED; 104 } else if (accattrp->devacc_attr_dataorder == 105 DDI_MERGING_OK_ACC) { 106 l_flags |= IOMEM_DATA_UC_WR_COMBINE; 107 } else { 108 l_flags |= IOMEM_DATA_CACHED; 109 } 110 } 111 112 e = devmap_umem_setup(dhc, dip, callbackops, cookie, off, len, maxprot, 113 l_flags, accattrp); 114 return (e); 115 } 116 117 /* 118 * Replacement for devmap_devmem_setup() which will map a machine address 119 * instead of a register set/offset. 120 */ 121 void 122 gfxp_map_devmem(devmap_cookie_t dhc, gfx_maddr_t maddr, size_t length, 123 ddi_device_acc_attr_t *attrp) 124 { 125 devmap_handle_t *dhp = (devmap_handle_t *)dhc; 126 pfn_t pfn; 127 128 129 #ifdef __xpv 130 ASSERT(DOMAIN_IS_INITDOMAIN(xen_info)); 131 pfn = xen_assign_pfn(mmu_btop(maddr)); 132 #else 133 pfn = mmu_btop(maddr); 134 #endif 135 136 dhp->dh_pfn = pfn; 137 dhp->dh_len = mmu_ptob(mmu_btopr(length)); 138 dhp->dh_roff = 0; 139 140 #ifndef DEVMAP_DEVMEM_COOKIE 141 #define DEVMAP_DEVMEM_COOKIE ((ddi_umem_cookie_t)0x1) /* XXPV */ 142 #endif /* DEVMAP_DEVMEM_COOKIE */ 143 dhp->dh_cookie = DEVMAP_DEVMEM_COOKIE; 144 /*LINTED: E_EXPR_NULL_EFFECT*/ 145 dhp->dh_flags |= DEVMAP_DEFAULTS; 146 dhp->dh_maxprot = PROT_ALL & dhp->dh_orig_maxprot; 147 148 /* no callbacks needed */ 149 bzero(&dhp->dh_callbackops, sizeof (struct devmap_callback_ctl)); 150 151 switch (attrp->devacc_attr_dataorder) { 152 case DDI_UNORDERED_OK_ACC: 153 dhp->dh_hat_attr = HAT_UNORDERED_OK; 154 break; 155 case DDI_MERGING_OK_ACC: 156 dhp->dh_hat_attr = HAT_MERGING_OK; 157 break; 158 case DDI_LOADCACHING_OK_ACC: 159 dhp->dh_hat_attr = HAT_LOADCACHING_OK; 160 break; 161 case DDI_STORECACHING_OK_ACC: 162 dhp->dh_hat_attr = HAT_STORECACHING_OK; 163 break; 164 case DDI_STRICTORDER_ACC: 165 default: 166 dhp->dh_hat_attr = HAT_STRICTORDER; 167 } 168 169 /* don't use large pages */ 170 dhp->dh_mmulevel = 0; 171 dhp->dh_flags &= ~DEVMAP_FLAG_LARGE; 172 173 dhp->dh_flags |= DEVMAP_SETUP_DONE; 174 } 175