X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..b7266188b87f3620ec3f9f717e57194a7dd989fe:/bsd/dev/memdev.c diff --git a/bsd/dev/memdev.c b/bsd/dev/memdev.c index 7e7ab586f..fe07f5e53 100644 --- a/bsd/dev/memdev.c +++ b/bsd/dev/memdev.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -94,6 +94,7 @@ #include #include #include +#include #include @@ -107,10 +108,15 @@ 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); +#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); extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va); @@ -140,7 +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, @@ -150,7 +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 */ @@ -171,6 +177,7 @@ 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 mdevlookup(int devid); +void mdevremoveall(void); static int mdevclose(__unused dev_t dev, __unused int flags, __unused int devtype, __unused struct proc *p) { @@ -206,7 +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 */ @@ -281,9 +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 */ @@ -307,9 +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 */ @@ -344,7 +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; @@ -355,7 +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) { @@ -426,6 +433,8 @@ 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; @@ -470,10 +479,14 @@ void mdevinit(__unused int the_cnt) { dev = mdevadd(devid, base >> 12, 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 */ @@ -528,6 +541,8 @@ char *cvtnum(char *pos, char *end, unsigned int *num) { /* Convert to a number } } +#endif /* CONFIG_MEMDEV_INSECURE */ + dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) { int i; @@ -541,7 +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 %08lX-%08lX\n", (long) mdev[i].mdBase, (long) mdev[i].mdBase + mdev[i].mdSize - 1); } } if(devid < 0) { /* Do we have free slots? */ @@ -550,10 +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); + panic("mdevadd: attempt to explicitly add a previously defined memory device: %08X\n", devid); } } @@ -608,3 +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; + } +}