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 2005 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/types.h> 30 #include <sys/kmem.h> 31 #include <sys/systm.h> 32 #include <sys/ddi.h> 33 #include <sys/sunddi.h> 34 #include <sys/sunndi.h> 35 #include <sys/ddidmareq.h> 36 #include <sys/ddi_impldefs.h> 37 #include <sys/ndi_impldefs.h> 38 #include <sys/fcode.h> 39 40 /* 41 * We want to call the attachment point's dma ctl op, not his parent's 42 * dma ctl op, so we have to code this ourselves. 43 */ 44 45 int 46 fc_ddi_dma_alloc_handle(dev_info_t *dip, ddi_dma_attr_t *attr, 47 int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep) 48 { 49 int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_attr_t *, 50 int (*)(caddr_t), caddr_t, ddi_dma_handle_t *); 51 52 funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_allochdl; 53 return ((*funcp)(dip, dip, attr, waitfp, arg, handlep)); 54 } 55 56 int 57 fc_ddi_dma_buf_bind_handle(ddi_dma_handle_t handle, struct buf *bp, 58 uint_t flags, int (*waitfp)(caddr_t), caddr_t arg, 59 ddi_dma_cookie_t *cookiep, uint_t *ccountp) 60 { 61 struct ddi_dma_req dmareq; 62 ddi_dma_impl_t *hp; 63 dev_info_t *dip; 64 int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t, 65 struct ddi_dma_req *, ddi_dma_cookie_t *, uint_t *); 66 67 hp = (ddi_dma_impl_t *)handle; 68 dip = hp->dmai_rdip; 69 70 dmareq.dmar_flags = flags; 71 dmareq.dmar_fp = waitfp; 72 dmareq.dmar_arg = arg; 73 dmareq.dmar_object.dmao_size = (uint_t)bp->b_bcount; 74 75 if ((bp->b_flags & (B_PAGEIO|B_REMAPPED)) == B_PAGEIO) { 76 dmareq.dmar_object.dmao_type = DMA_OTYP_PAGES; 77 dmareq.dmar_object.dmao_obj.pp_obj.pp_pp = bp->b_pages; 78 dmareq.dmar_object.dmao_obj.pp_obj.pp_offset = 79 (uint_t)(((uintptr_t)bp->b_un.b_addr) & MMU_PAGEOFFSET); 80 } else { 81 dmareq.dmar_object.dmao_obj.virt_obj.v_addr = bp->b_un.b_addr; 82 if ((bp->b_flags & (B_SHADOW|B_REMAPPED)) == B_SHADOW) { 83 dmareq.dmar_object.dmao_obj.virt_obj.v_priv = 84 bp->b_shadow; 85 dmareq.dmar_object.dmao_type = DMA_OTYP_BUFVADDR; 86 } else { 87 dmareq.dmar_object.dmao_type = 88 (bp->b_flags & (B_PHYS | B_REMAPPED))? 89 DMA_OTYP_BUFVADDR : DMA_OTYP_VADDR; 90 dmareq.dmar_object.dmao_obj.virt_obj.v_priv = NULL; 91 } 92 93 /* 94 * If the buffer has no proc pointer, or the proc 95 * struct has the kernel address space, or the buffer has 96 * been marked B_REMAPPED (meaning that it is now 97 * mapped into the kernel's address space), then 98 * the address space is kas (kernel address space). 99 */ 100 if (bp->b_proc == NULL || bp->b_proc->p_as == &kas || 101 (bp->b_flags & B_REMAPPED) != 0) { 102 dmareq.dmar_object.dmao_obj.virt_obj.v_as = 0; 103 } else { 104 dmareq.dmar_object.dmao_obj.virt_obj.v_as = 105 bp->b_proc->p_as; 106 } 107 } 108 109 funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_bindhdl; 110 return ((*funcp)(dip, dip, handle, &dmareq, cookiep, ccountp)); 111 } 112 113 int 114 fc_ddi_dma_unbind_handle(ddi_dma_handle_t handle) 115 { 116 int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t); 117 ddi_dma_impl_t *hp; 118 dev_info_t *dip; 119 120 hp = (ddi_dma_impl_t *)handle; 121 dip = hp->dmai_rdip; 122 funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_unbindhdl; 123 return ((*funcp)(dip, dip, handle)); 124 } 125 126 void 127 fc_ddi_dma_free_handle(ddi_dma_handle_t *handlep) 128 { 129 int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t); 130 ddi_dma_impl_t *hp; 131 dev_info_t *dip; 132 133 hp = (ddi_dma_impl_t *)*handlep; 134 dip = hp->dmai_rdip; 135 funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_freehdl; 136 (void) (*funcp)(dip, dip, *handlep); 137 } 138 139 int 140 fc_ddi_dma_sync(ddi_dma_handle_t h, off_t o, size_t l, uint_t whom) 141 { 142 ddi_dma_impl_t *hp = (ddi_dma_impl_t *)h; 143 dev_info_t *dip; 144 int (*funcp)(dev_info_t *, dev_info_t *, ddi_dma_handle_t, off_t, 145 size_t, uint_t); 146 147 /* 148 * the DMA nexus driver will set DMP_NOSYNC if the 149 * platform does not require any sync operation. For 150 * example if the memory is uncached or consistent 151 * and without any I/O write buffers involved. 152 */ 153 if ((hp->dmai_rflags & DMP_NOSYNC) == DMP_NOSYNC) 154 return (DDI_SUCCESS); 155 156 dip = hp->dmai_rdip; 157 funcp = DEVI(dip)->devi_ops->devo_bus_ops->bus_dma_flush; 158 return ((*funcp)(dip, dip, h, o, l, whom)); 159 } 160 161 /* 162 * Create untyped properties, just like 1275 properties. 163 * XXX: Assumes property encoding is the natural byte order. 164 */ 165 int 166 fc_ndi_prop_update(dev_t match_dev, dev_info_t *dip, 167 char *name, uchar_t *data, uint_t nelements) 168 { 169 return (ddi_prop_update_common(match_dev, dip, 170 DDI_PROP_HW_DEF | DDI_PROP_TYPE_ANY, 171 name, data, nelements, ddi_prop_fm_encode_bytes)); 172 } 173