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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/debug.h> 30 #include <sys/types.h> 31 #include <sys/param.h> 32 #include <sys/time.h> 33 #include <sys/buf.h> 34 #include <sys/errno.h> 35 #include <sys/systm.h> 36 #include <sys/conf.h> 37 #include <sys/signal.h> 38 #include <vm/page.h> 39 #include <vm/as.h> 40 #include <vm/hat.h> 41 #include <vm/seg.h> 42 #include <vm/seg_dev.h> 43 #include <vm/hat_i86.h> 44 #include <sys/ddi.h> 45 #include <sys/devops.h> 46 #include <sys/sunddi.h> 47 #include <sys/ddi_impldefs.h> 48 #include <sys/fs/snode.h> 49 #include <sys/pci.h> 50 #include <sys/vmsystm.h> 51 #include <sys/int_fmtio.h> 52 #include "gfx_private.h" 53 54 #ifdef __xpv 55 #include <sys/hypervisor.h> 56 #endif 57 58 /* 59 * Create a dummy ddi_umem_cookie given to gfxp_devmap_umem_setup(). 60 */ 61 ddi_umem_cookie_t 62 gfxp_umem_cookie_init(caddr_t kva, size_t size) 63 { 64 struct ddi_umem_cookie *umem_cookie; 65 66 umem_cookie = kmem_zalloc(sizeof (struct ddi_umem_cookie), KM_SLEEP); 67 68 if (umem_cookie == NULL) 69 return (NULL); 70 71 umem_cookie->cvaddr = kva; 72 umem_cookie->type = KMEM_NON_PAGEABLE; 73 umem_cookie->size = size; 74 75 return ((ddi_umem_cookie_t *)umem_cookie); 76 } 77 78 void 79 gfxp_umem_cookie_destroy(ddi_umem_cookie_t cookie) 80 { 81 kmem_free(cookie, sizeof (struct ddi_umem_cookie)); 82 } 83 84 /* 85 * called by driver devmap routine to pass kernel virtual address mapping 86 * info to the framework. 87 */ 88 /*ARGSUSED*/ 89 int 90 gfxp_devmap_umem_setup(devmap_cookie_t dhc, dev_info_t *dip, 91 struct devmap_callback_ctl *callbackops, ddi_umem_cookie_t cookie, 92 offset_t off, size_t len, uint_t maxprot, uint_t flags, 93 ddi_device_acc_attr_t *accattrp) 94 { 95 uint_t l_flags = flags & ~IOMEM_DATA_MASK; /* clear cache attrs */ 96 int e; 97 98 /* 99 * Set an appropriate attribute from devacc_attr_dataorder 100 * to keep compatibility. The cache attributes are igonred 101 * if specified. 102 */ 103 if (accattrp != NULL) { 104 if (accattrp->devacc_attr_dataorder == DDI_STRICTORDER_ACC) { 105 l_flags |= IOMEM_DATA_UNCACHED; 106 } else if (accattrp->devacc_attr_dataorder == 107 DDI_MERGING_OK_ACC) { 108 l_flags |= IOMEM_DATA_UC_WR_COMBINE; 109 } else { 110 l_flags |= IOMEM_DATA_CACHED; 111 } 112 } 113 114 e = devmap_umem_setup(dhc, dip, callbackops, cookie, off, len, maxprot, 115 l_flags, accattrp); 116 return (e); 117 } 118 119 /* 120 * Replacement for devmap_devmem_setup() which will map a machine address 121 * instead of a register set/offset. 122 */ 123 void 124 gfxp_map_devmem(devmap_cookie_t dhc, gfx_maddr_t maddr, size_t length, 125 ddi_device_acc_attr_t *attrp) 126 { 127 devmap_handle_t *dhp = (devmap_handle_t *)dhc; 128 pfn_t pfn; 129 130 131 #ifdef __xpv 132 ASSERT(DOMAIN_IS_INITDOMAIN(xen_info)); 133 pfn = xen_assign_pfn(mmu_btop(maddr)); 134 #else 135 pfn = mmu_btop(maddr); 136 #endif 137 138 dhp->dh_pfn = pfn; 139 dhp->dh_len = mmu_ptob(mmu_btopr(length)); 140 dhp->dh_roff = 0; 141 142 #ifndef DEVMAP_DEVMEM_COOKIE 143 #define DEVMAP_DEVMEM_COOKIE ((ddi_umem_cookie_t)0x1) /* XXPV */ 144 #endif /* DEVMAP_DEVMEM_COOKIE */ 145 dhp->dh_cookie = DEVMAP_DEVMEM_COOKIE; 146 /*LINTED: E_EXPR_NULL_EFFECT*/ 147 dhp->dh_flags |= DEVMAP_DEFAULTS; 148 dhp->dh_maxprot = PROT_ALL & dhp->dh_orig_maxprot; 149 150 /* no callbacks needed */ 151 bzero(&dhp->dh_callbackops, sizeof (struct devmap_callback_ctl)); 152 153 switch (attrp->devacc_attr_dataorder) { 154 case DDI_UNORDERED_OK_ACC: 155 dhp->dh_hat_attr = HAT_UNORDERED_OK; 156 break; 157 case DDI_MERGING_OK_ACC: 158 dhp->dh_hat_attr = HAT_MERGING_OK; 159 break; 160 case DDI_LOADCACHING_OK_ACC: 161 dhp->dh_hat_attr = HAT_LOADCACHING_OK; 162 break; 163 case DDI_STORECACHING_OK_ACC: 164 dhp->dh_hat_attr = HAT_STORECACHING_OK; 165 break; 166 case DDI_STRICTORDER_ACC: 167 default: 168 dhp->dh_hat_attr = HAT_STRICTORDER; 169 } 170 171 /* don't use large pages */ 172 dhp->dh_mmulevel = 0; 173 dhp->dh_flags &= ~DEVMAP_FLAG_LARGE; 174 175 dhp->dh_flags |= DEVMAP_SETUP_DONE; 176 } 177