X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/ff6e181ae92fc6f1e89841290f461d1f2f9badd9..316670eb35587141e969394ae8537d66b9211e80:/bsd/dev/memdev.c?ds=sidebyside diff --git a/bsd/dev/memdev.c b/bsd/dev/memdev.c index 789249397..58fecce01 100644 --- a/bsd/dev/memdev.c +++ b/bsd/dev/memdev.c @@ -1,14 +1,19 @@ /* - * Copyright (c) 2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_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 - * file. + * 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 @@ -18,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1988 University of Utah. @@ -89,6 +94,7 @@ #include #include #include +#include #include @@ -102,9 +108,14 @@ static strategy_fcn_t mdevstrategy; static int mdevbioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p); static int mdevcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p); static int mdevrw(dev_t dev, struct uio *uio, int ioflag); + +#ifdef CONFIG_MEMDEV_INSECURE + static char * nonspace(char *pos, char *end); static char * getspace(char *pos, char *end); -static char * cvtnum(char *pos, char *end, unsigned int *num); +static char * cvtnum(char *pos, char *end, uint64_t *num); + +#endif /* CONFIG_MEMDEV_INSECURE */ extern void bcopy_phys(addr64_t from, addr64_t to, vm_size_t bytes); extern void mapping_set_mod(ppnum_t pn); @@ -135,7 +146,7 @@ static struct cdevsw mdevcdevsw = { /* ioctl */ mdevcioctl, /* stop */ eno_stop, /* reset */ eno_reset, - /* ttys */ 0, + /* ttys */ NULL, /* select */ eno_select, /* mmap */ eno_mmap, /* strategy */ eno_strat, @@ -145,7 +156,7 @@ static struct cdevsw mdevcdevsw = { }; struct mdev { - vm_offset_t mdBase; /* file size in bytes */ + uint64_t mdBase; /* file size in bytes */ uint32_t mdSize; /* file size in bytes */ int mdFlags; /* flags */ int mdSecsize; /* sector size */ @@ -164,8 +175,9 @@ int mdevBMajor = -1; int mdevCMajor = -1; static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p, int is_char); -dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys); +dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys); dev_t mdevlookup(int devid); +void mdevremoveall(void); static int mdevclose(__unused dev_t dev, __unused int flags, __unused int devtype, __unused struct proc *p) { @@ -201,7 +213,7 @@ static int mdevrw(dev_t dev, struct uio *uio, __unused int ioflag) { saveflag = uio->uio_segflg; /* Remember what the request is */ #if LP64_DEBUG - if (IS_VALID_UIO_SEGFLG(uio->uio_segflg) == 0) { + if (UIO_IS_USER_SPACE(uio) == 0 && UIO_IS_SYS_SPACE(uio) == 0) { panic("mdevrw - invalid uio_segflg\n"); } #endif /* LP64_DEBUG */ @@ -276,9 +288,9 @@ static void mdevstrategy(struct buf *bp) { lop = min((4096 - (vaddr & 4095)), (4096 - (fvaddr & 4095))); /* Get smallest amount left on sink and source */ csize = min(lop, left); /* Don't move more than we need to */ - pp = pmap_find_phys(kernel_pmap, (addr64_t)((unsigned int)vaddr)); /* Get the sink physical address */ + pp = pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)vaddr)); /* Get the sink physical address */ if(!pp) { /* Not found, what gives? */ - panic("mdevstrategy: sink address %016llX not mapped\n", (addr64_t)((unsigned int)vaddr)); + panic("mdevstrategy: sink address %016llX not mapped\n", (addr64_t)((uintptr_t)vaddr)); } paddr = (addr64_t)(((addr64_t)pp << 12) | (addr64_t)(vaddr & 4095)); /* Get actual address */ bcopy_phys(fvaddr, paddr, csize); /* Copy this on in */ @@ -302,9 +314,9 @@ static void mdevstrategy(struct buf *bp) { lop = min((4096 - (vaddr & 4095)), (4096 - (fvaddr & 4095))); /* Get smallest amount left on sink and source */ csize = min(lop, left); /* Don't move more than we need to */ - pp = pmap_find_phys(kernel_pmap, (addr64_t)((unsigned int)vaddr)); /* Get the source physical address */ + pp = pmap_find_phys(kernel_pmap, (addr64_t)((uintptr_t)vaddr)); /* Get the source physical address */ if(!pp) { /* Not found, what gives? */ - panic("mdevstrategy: source address %016llX not mapped\n", (addr64_t)((unsigned int)vaddr)); + panic("mdevstrategy: source address %016llX not mapped\n", (addr64_t)((uintptr_t)vaddr)); } paddr = (addr64_t)(((addr64_t)pp << 12) | (addr64_t)(vaddr & 4095)); /* Get actual address */ @@ -339,7 +351,7 @@ static int mdevcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, __unused int flag, struct proc *p, int is_char) { int error; - u_long *f; + u_int32_t *f; u_int64_t *o; int devid; @@ -350,7 +362,7 @@ static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, __unused int flag, error = proc_suser(p); /* Are we superman? */ if (error) return (error); /* Nope... */ - f = (u_long*)data; + f = (u_int32_t*)data; o = (u_int64_t *)data; switch (cmd) { @@ -421,9 +433,11 @@ static int mdevsize(dev_t dev) { void mdevinit(__unused int the_cnt) { +#ifdef CONFIG_MEMDEV_INSECURE + int devid, phys; - ppnum_t base; - unsigned int size; + uint64_t base; + uint64_t size; char *ba, *lp; dev_t dev; @@ -462,13 +476,17 @@ void mdevinit(__unused int the_cnt) { if((ba[0] != ' ') && (ba[0] != 0)) continue; /* End must be null or space */ } - dev = mdevadd(devid, base >> 12, size >> 12, phys); /* Go add the device */ + dev = mdevadd(devid, base >> 12, (unsigned)size >> 12, phys); /* Go add the device */ } +#endif /* CONFIG_MEMDEV_INSECURE */ + return; } +#ifdef CONFIG_MEMDEV_INSECURE + char *nonspace(char *pos, char *end) { /* Find next non-space in string */ if(pos >= end) return end; /* Don't go past end */ @@ -491,7 +509,7 @@ char *getspace(char *pos, char *end) { /* Find next non-space in string */ } } -char *cvtnum(char *pos, char *end, unsigned int *num) { /* Convert to a number */ +char *cvtnum(char *pos, char *end, uint64_t *num) { /* Convert to a number */ int rad, dig; @@ -523,7 +541,9 @@ char *cvtnum(char *pos, char *end, unsigned int *num) { /* Convert to a number } } -dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) { +#endif /* CONFIG_MEMDEV_INSECURE */ + +dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys) { int i; @@ -536,7 +556,7 @@ dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) { continue; /* Skip check */ } if(!(((base + size -1 ) < mdev[i].mdBase) || ((mdev[i].mdBase + mdev[i].mdSize - 1) < base))) { /* Is there any overlap? */ - panic("mdevadd: attempt to add overlapping memory device at %08X-%08X\n", mdev[i].mdBase, mdev[i].mdBase + mdev[i].mdSize - 1); + panic("mdevadd: attempt to add overlapping memory device at %016llX-%016llX\n", mdev[i].mdBase, mdev[i].mdBase + mdev[i].mdSize - 1); } } if(devid < 0) { /* Do we have free slots? */ @@ -545,10 +565,10 @@ dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) { } else { if(devid >= 16) { /* Giving us something bogus? */ - panic("mdevadd: attempt to explicitly add a bogus memory device: &08X\n", devid); + panic("mdevadd: attempt to explicitly add a bogus memory device: %08X\n", devid); } - if(mdev[devid].mdFlags &mdInited) { /* Already there? */ - panic("mdevadd: attempt to explicitly add a previously defined memory device: &08X\n", devid); + if(mdev[devid].mdFlags & mdInited) { /* Already there? */ + panic("mdevadd: attempt to explicitly add a previously defined memory device: %08X\n", devid); } } @@ -591,8 +611,8 @@ dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) { mdev[devid].mdSecsize = DEV_BSIZE; /* Set starting block size */ if(phys) mdev[devid].mdFlags |= mdPhys; /* Show that we are in physical memory */ mdev[devid].mdFlags |= mdInited; /* Show we are all set up */ - printf("Added memory device md%x/rmd%x (%08X/%08X) at %08X for %08X\n", - devid, devid, mdev[devid].mdBDev, mdev[devid].mdCDev, base << 12, size << 12); + printf("Added memory device md%x/rmd%x (%08X/%08X) at %016llX for %016llX\n", + devid, devid, mdev[devid].mdBDev, mdev[devid].mdCDev, base << 12, (uint64_t)size << 12); return mdev[devid].mdBDev; } @@ -603,3 +623,24 @@ dev_t mdevlookup(int devid) { if(!(mdev[devid].mdFlags & mdInited)) return -1; /* This one hasn't been defined */ return mdev[devid].mdBDev; /* Return the device number */ } + +void mdevremoveall(void) { + + int i; + + for(i = 0; i < 16; i++) { + if(!(mdev[i].mdFlags & mdInited)) continue; /* Ignore unused mdevs */ + + devfs_remove(mdev[i].mdbdevb); /* Remove the block device */ + devfs_remove(mdev[i].mdcdevb); /* Remove the character device */ + + mdev[i].mdBase = 0; /* Clear the mdev's storage */ + mdev[i].mdSize = 0; + mdev[i].mdSecsize = 0; + mdev[i].mdFlags = 0; + mdev[i].mdBDev = 0; + mdev[i].mdCDev = 0; + mdev[i].mdbdevb = 0; + mdev[i].mdcdevb = 0; + } +}