X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..8ad349bb6ed4a0be06e34c92be0d98b92e078db4:/bsd/dev/ppc/mem.c diff --git a/bsd/dev/ppc/mem.c b/bsd/dev/ppc/mem.c index b0078086a..ba2e0fcd5 100644 --- a/bsd/dev/ppc/mem.c +++ b/bsd/dev/ppc/mem.c @@ -1,26 +1,31 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. - * - * @APPLE_LICENSE_HEADER_START@ + * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved. * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the + * License may not be used to create, or enable the creation or + * redistribution of, unlawful or unlicensed copies of an Apple operating + * system, or to circumvent, violate, or enable the circumvention or + * violation of, any terms of an Apple operating system software license + * agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * + * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ */ /*- * Copyright (c) 1988 University of Utah. @@ -73,10 +78,9 @@ #include #include #include -#include #include #include -#include +#include #include #include @@ -89,9 +93,15 @@ static caddr_t devzerobuf; -extern vm_offset_t mem_actual; extern pmap_t kernel_pmap; +extern boolean_t kernacc(off_t, size_t ); + +int mmread(dev_t dev, struct uio *uio); +int mmrw(dev_t dev, struct uio *uio, enum uio_rw rw); +int mmioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p); +int mmwrite(dev_t dev, struct uio *uio); +int mmread(dev, uio) dev_t dev; struct uio *uio; @@ -100,6 +110,7 @@ mmread(dev, uio) return (mmrw(dev, uio, UIO_READ)); } +int mmwrite(dev, uio) dev_t dev; struct uio *uio; @@ -108,24 +119,41 @@ mmwrite(dev, uio) return (mmrw(dev, uio, UIO_WRITE)); } +int +mmioctl(__unused dev_t dev, u_long cmd, __unused caddr_t data, + __unused int flag, __unused struct proc *p) +{ + switch (cmd) { + case FIONBIO: + case FIOASYNC: + /* OK to do nothing: we always return immediately */ + break; + default: + return ENODEV; + } + + return (0); +} + +int mmrw(dev, uio, rw) dev_t dev; struct uio *uio; enum uio_rw rw; { register int o; - register u_int c, v; - register struct iovec *iov; +#if LP64KERN + register uint64_t c; +#else + register uint c; +#endif + addr64_t vll; int error = 0; vm_offset_t where; - int spl; - vm_size_t size; - extern boolean_t kernacc(off_t, size_t ); - - while (uio->uio_resid > 0 && error == 0) { - iov = uio->uio_iov; - if (iov->iov_len == 0) { - uio->uio_iov++; + + while (uio_resid(uio) > 0 && error == 0) { + if (uio_iov_len(uio) == 0) { + uio_next_iov(uio); uio->uio_iovcnt--; if (uio->uio_iovcnt < 0) panic("mmrw"); @@ -135,52 +163,56 @@ mmrw(dev, uio, rw) /* minor device 0 is physical memory */ case 0: - v = trunc_page(uio->uio_offset); - if (uio->uio_offset >= ((dgWork.dgFlags & enaDiagDM) ? mem_actual : mem_size)) + vll = trunc_page_64(uio->uio_offset); + if(((vll >> 31) == 1) || vll >= ((dgWork.dgFlags & enaDiagDM) ? mem_actual : max_mem)) goto fault; - size= PAGE_SIZE; - if(dgWork.dgFlags & enaDiagDM) { /* Can we really get all memory? */ - if (kmem_alloc_pageable(kernel_map, &where, size) != KERN_SUCCESS) { + if (kmem_alloc_pageable(kernel_map, &where, PAGE_SIZE) != KERN_SUCCESS) { goto fault; } else { - (void)mapping_make(kernel_pmap, 0, where, v, - VM_PROT_READ, 2, 0); /* Map it in for the moment */ + addr64_t collad; + + collad = mapping_make(kernel_pmap, (addr64_t)where, (ppnum_t)(vll >> 12), 0, 1, VM_PROT_READ); /* Map it in for the moment */ + if(collad) { /* See if it failed (shouldn't happen) */ + kmem_free(kernel_map, where, PAGE_SIZE); /* Toss the page */ + goto fault; /* Kill the transfer */ + } } } else { - if (kmem_alloc(kernel_map, &where, size) + if (kmem_alloc(kernel_map, &where, 4096) != KERN_SUCCESS) { goto fault; } } - o = uio->uio_offset - v; - c = min(PAGE_SIZE - o, (u_int)iov->iov_len); - error = uiomove((caddr_t) (where + o), c, uio); + o = uio->uio_offset - vll; + // LP64todo - fix this! + c = min(PAGE_SIZE - o, uio_iov_len(uio)); + error = uiomove((caddr_t)(where + o), c, uio); - if(dgWork.dgFlags & enaDiagDM) (void)mapping_remove(kernel_pmap, where); /* Unmap it */ + if(dgWork.dgFlags & enaDiagDM) (void)mapping_remove(kernel_pmap, (addr64_t)where); /* Unmap it */ kmem_free(kernel_map, where, PAGE_SIZE); continue; /* minor device 1 is kernel memory */ case 1: /* Do some sanity checking */ - if (((caddr_t)uio->uio_offset >= VM_MAX_KERNEL_ADDRESS) || - ((caddr_t)uio->uio_offset <= VM_MIN_KERNEL_ADDRESS)) + if (((addr64_t)uio->uio_offset > vm_last_addr) || + ((addr64_t)uio->uio_offset < VM_MIN_KERNEL_ADDRESS)) goto fault; - c = iov->iov_len; - if (!kernacc((caddr_t)uio->uio_offset, c)) + c = uio_iov_len(uio); + if (!kernacc(uio->uio_offset, c)) goto fault; - error = uiomove((caddr_t)uio->uio_offset, (int)c, uio); + error = uiomove64(uio->uio_offset, c, uio); continue; /* minor device 2 is EOF/RATHOLE */ case 2: if (rw == UIO_READ) return (0); - c = iov->iov_len; + c = uio_iov_len(uio); break; /* minor device 3 is ZERO/RATHOLE */ case 3: @@ -189,11 +221,12 @@ mmrw(dev, uio, rw) bzero(devzerobuf, PAGE_SIZE); } if(uio->uio_rw == UIO_WRITE) { - c = iov->iov_len; + c = uio_iov_len(uio); break; } - c = min(iov->iov_len, PAGE_SIZE); - error = uiomove(devzerobuf, (int)c, uio); + // LP64todo - fix this! + c = min(uio_iov_len(uio), PAGE_SIZE); + error = uiomove(devzerobuf, c, uio); continue; default: goto fault; @@ -202,10 +235,15 @@ mmrw(dev, uio, rw) if (error) break; - iov->iov_base += c; - iov->iov_len -= c; + uio_iov_base_add(uio, c); uio->uio_offset += c; - uio->uio_resid -= c; +#if LP64KERN + uio_setresid(uio, (uio_resid(uio) - c)); + uio_iov_len_add(uio, -((int64_t)c)); +#else + uio_setresid(uio, (uio_resid(uio) - c)); + uio_iov_len_add(uio, -((int)c)); +#endif } return (error); fault: