void WPL_BspMallocInit(WP_U32 heapSize, void **res_private_heap)
{
/* Determine the starting address from the heap. */
WP_U32 WPL_heapBaseAddress =
PHYS_TO_KSEG0(wpl_bus_mappings[WP_BUS_HOST].actual_start +
wpl_bus_mappings[WP_BUS_HOST].size);
memset(&theHeaps[PRIVATE], 0, sizeof(wpl_heapinfo));
WPLI_HeapSizing(&theHeaps[PRIVATE], (void *) WPL_heapBaseAddress,
(void *) (WPL_heapBaseAddress + heapSize));
theHeaps[PRIVATE].pool_pginfo = &private_pginfo[0];
theHeaps[PRIVATE].pool_pgfree = &private_pgfree[0];
theHeaps[PRIVATE].page_dir = &private_page_dir[0];
*res_private_heap = (void *) &theHeaps[PRIVATE];
WPLI_HeapInit((wpl_heapinfo *)(*res_private_heap));
return;
}
/*ARGSUSED*/
int
mmrw(dev_t dev, struct uio *uio, int flags)
{
struct iovec *iov;
int error = 0, c;
vaddr_t v;
while (uio->uio_resid > 0 && error == 0) {
iov = uio->uio_iov;
if (iov->iov_len == 0) {
uio->uio_iov++;
uio->uio_iovcnt--;
if (uio->uio_iovcnt < 0)
panic("mmrw");
continue;
}
switch (minor(dev)) {
/* minor device 0 is physical memory */
case 0:
v = uio->uio_offset;
c = iov->iov_len;
if (v + c > ctob(physmem))
return (EFAULT);
v = (vaddr_t)PHYS_TO_KSEG0(v);
error = uiomove((caddr_t)v, c, uio);
continue;
/* minor device 1 is kernel memory */
case 1:
v = uio->uio_offset;
c = min(iov->iov_len, MAXPHYS);
if ((v > KSEG0_BASE && v + c <= KSEG0_BASE + ctob(physmem)) ||
uvm_kernacc((caddr_t)v, c,
uio->uio_rw == UIO_READ ? B_READ : B_WRITE)) {
error = uiomove((caddr_t)v, c, uio);
continue;
} else {
return (EFAULT);
}
/* minor device 2 is EOF/RATHOLE */
case 2:
if (uio->uio_rw == UIO_WRITE)
uio->uio_resid = 0;
return (0);
/* minor device 12 (/dev/zero) is source of nulls on read, rathole on write */
case 12:
if (uio->uio_rw == UIO_WRITE) {
c = iov->iov_len;
break;
}
if (zeropage == NULL) {
zeropage = (caddr_t)
malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
bzero(zeropage, PAGE_SIZE);
}
c = min(iov->iov_len, PAGE_SIZE);
error = uiomove(zeropage, c, uio);
continue;
default:
return (ENODEV);
}
if (error)
break;
iov->iov_base += c;
iov->iov_len -= c;
uio->uio_offset += c;
uio->uio_resid -= c;
}
return error;
}
