xnu-2782.20.48.tar.gz

[apple/xnu.git] / bsd / dev / memdev.c

diff --git a/bsd/dev/memdev.c b/bsd/dev/memdev.c
index fe07f5e539c8f125e2eb877a3cd7e25b68646c03..5a659bebd3039b815e168024abc104721e8e304a 100644 (file)
--- a/bsd/dev/memdev.c
+++ b/bsd/dev/memdev.c
@@ -113,7 +113,7 @@ static int                          mdevrw(dev_t dev, struct uio *uio, int ioflag);
 
 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 */
 
@@ -175,7 +175,7 @@ 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);
 
@@ -354,6 +354,7 @@ static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, __unused int flag,
        u_int32_t *f;
        u_int64_t *o;
        int devid;
+       dk_memdev_info_t * memdev_info;
 
        devid = minor(dev);                                                                     /* Get minor device number */
 
@@ -364,6 +365,7 @@ static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, __unused int flag,
 
        f = (u_int32_t*)data;
        o = (u_int64_t *)data;
+       memdev_info = (dk_memdev_info_t *) data;
 
        switch (cmd) {
 
@@ -408,7 +410,22 @@ static int mdevioctl(dev_t dev, u_long cmd, caddr_t data, __unused int flag,
                        if(!(mdev[devid].mdFlags & mdInited)) return (ENXIO);
                        *o = ((mdev[devid].mdSize << 12) + mdev[devid].mdSecsize - 1) / mdev[devid].mdSecsize;
                        break;
-                       
+
+               /*
+                * We're interested in the following bits of information:
+                *   Are you a memory-backed device (always yes, in this case)?
+                *   Physical memory (mdPhys)?
+                *   What is your base page?
+                *   What is your size?
+                */
+               case DKIOCGETMEMDEVINFO:
+                       if (!(mdev[devid].mdFlags & mdInited)) return (ENXIO);
+                       memdev_info->mi_mdev = TRUE;
+                       memdev_info->mi_phys = (mdev[devid].mdFlags & mdPhys) ? TRUE : FALSE;
+                       memdev_info->mi_base = mdev[devid].mdBase;
+                       memdev_info->mi_size = mdev[devid].mdSize;
+                       break;
+
                default:
                        error = ENOTTY;
                        break;
@@ -436,8 +453,8 @@ 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;
        
@@ -476,7 +493,7 @@ 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 */
@@ -509,7 +526,7 @@ 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;
        
@@ -543,7 +560,7 @@ 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) {
+dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys) {
        
        int i;
        
@@ -556,7 +573,7 @@ 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 %08lX-%08lX\n", (long) mdev[i].mdBase, (long) 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? */
@@ -567,7 +584,7 @@ dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys) {
                if(devid >= 16) {                                                               /* Giving us something bogus? */
                        panic("mdevadd: attempt to explicitly add a bogus memory device: %08X\n", devid);
                }
-               if(mdev[devid].mdFlags &mdInited) {                             /* Already there? */
+               if(mdev[devid].mdFlags & mdInited) {                    /* Already there? */
                        panic("mdevadd: attempt to explicitly add a previously defined memory device: %08X\n", devid);
                }
        }
@@ -611,8 +628,8 @@ 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;
 }