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/* $OpenBSD: drm_linux.c,v 1.4 2015/04/08 15:01:33 jsg Exp $ */
/*
* Copyright (c) 2013 Jonathan Gray <jsg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <dev/pci/drm/drmP.h>
struct timespec
ns_to_timespec(const int64_t nsec)
{
struct timespec ts;
int32_t rem;
if (nsec == 0) {
ts.tv_sec = 0;
ts.tv_nsec = 0;
return (ts);
}
ts.tv_sec = nsec / NSEC_PER_SEC;
rem = nsec % NSEC_PER_SEC;
if (rem < 0) {
ts.tv_sec--;
rem += NSEC_PER_SEC;
}
ts.tv_nsec = rem;
return (ts);
}
int64_t
timeval_to_ns(const struct timeval *tv)
{
return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
tv->tv_usec * NSEC_PER_USEC;
}
struct timeval
ns_to_timeval(const int64_t nsec)
{
struct timeval tv;
int32_t rem;
if (nsec == 0) {
tv.tv_sec = 0;
tv.tv_usec = 0;
return (tv);
}
tv.tv_sec = nsec / NSEC_PER_SEC;
rem = nsec % NSEC_PER_SEC;
if (rem < 0) {
tv.tv_sec--;
rem += NSEC_PER_SEC;
}
tv.tv_usec = rem / 1000;
return (tv);
}
extern char *hw_vendor, *hw_prod;
static bool
dmi_found(const struct dmi_system_id *dsi)
{
int i, slot;
for (i = 0; i < nitems(dsi->matches); i++) {
slot = dsi->matches[i].slot;
switch (slot) {
case DMI_NONE:
break;
case DMI_SYS_VENDOR:
case DMI_BOARD_VENDOR:
if (hw_vendor != NULL &&
!strcmp(hw_vendor, dsi->matches[i].substr))
break;
else
return false;
case DMI_PRODUCT_NAME:
case DMI_BOARD_NAME:
if (hw_prod != NULL &&
!strcmp(hw_prod, dsi->matches[i].substr))
break;
else
return false;
default:
return false;
}
}
return true;
}
int
dmi_check_system(const struct dmi_system_id *sysid)
{
const struct dmi_system_id *dsi;
int num = 0;
for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) {
if (dmi_found(dsi)) {
num++;
if (dsi->callback && dsi->callback(dsi))
break;
}
}
return (num);
}
void *
kmap(struct vm_page *pg)
{
vaddr_t va;
#if defined (__HAVE_PMAP_DIRECT)
va = pmap_map_direct(pg);
#else
va = uvm_km_valloc_wait(phys_map, PAGE_SIZE);
pmap_kenter_pa(va, VM_PAGE_TO_PHYS(pg), PROT_READ | PROT_WRITE);
pmap_update(pmap_kernel());
#endif
return (void *)va;
}
void
kunmap(void *addr)
{
vaddr_t va = (vaddr_t)addr;
#if defined (__HAVE_PMAP_DIRECT)
pmap_unmap_direct(va);
#else
pmap_kremove(va, PAGE_SIZE);
pmap_update(pmap_kernel());
uvm_km_free_wakeup(phys_map, va, PAGE_SIZE);
#endif
}
void *
vmap(struct vm_page **pages, unsigned int npages, unsigned long flags,
pgprot_t prot)
{
vaddr_t va;
paddr_t pa;
int i;
va = uvm_km_valloc(kernel_map, PAGE_SIZE * npages);
if (va == 0)
return NULL;
for (i = 0; i < npages; i++) {
pa = VM_PAGE_TO_PHYS(pages[i]) | prot;
pmap_enter(pmap_kernel(), va + (i * PAGE_SIZE), pa,
PROT_READ | PROT_WRITE,
PROT_READ | PROT_WRITE | PMAP_WIRED);
pmap_update(pmap_kernel());
}
return (void *)va;
}
void
vunmap(void *addr, size_t size)
{
vaddr_t va = (vaddr_t)addr;
pmap_remove(pmap_kernel(), va, va + size);
pmap_update(pmap_kernel());
uvm_km_free(kernel_map, va, size);
}
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