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Add support for USB display link adapters to the FB and VT drivers.

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The vtophys() function is used to get the physical page address for
the virtually allocated frame buffers when a physically continuous
memory area is not available. This change also allows removing the
masking of the FB_FLAG_NOMMAP flag in the PS3 syscons driver.

The FB and VT drivers were tested using X.org/xf86-video-scfb and
syscons.
This commit is contained in:
Hans Petter Selasky 2015-03-07 20:45:15 +00:00
parent c3e2821f5f
commit a985ae9b4a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=279752
3 changed files with 22 additions and 9 deletions
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13
sys/dev/fb/fbd.c
View File

@ -51,6 +51,9 @@ __FBSDID("$FreeBSD$");
#include <dev/vt/vt.h>
#include <dev/vt/hw/fb/vt_fb.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include "fb_if.h"
LIST_HEAD(fb_list_head_t, fb_list_entry) fb_list_head =
@ -167,11 +170,14 @@ fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
info = dev->si_drv1;
if ((info->fb_flags & FB_FLAG_NOMMAP) || info->fb_pbase == 0)
if (info->fb_flags & FB_FLAG_NOMMAP)
return (ENODEV);
if (offset < info->fb_size) {
*paddr = info->fb_pbase + offset;
if (offset >= 0 && offset < info->fb_size) {
if (info->fb_pbase == 0)
*paddr = vtophys((uint8_t *)info->fb_vbase + offset);
else
*paddr = info->fb_pbase + offset;
return (0);
}
return (EINVAL);
@ -356,5 +362,6 @@ devclass_t fbd_devclass;
DRIVER_MODULE(fbd, fb, fbd_driver, fbd_devclass, 0, 0);
DRIVER_MODULE(fbd, drmn, fbd_driver, fbd_devclass, 0, 0);
DRIVER_MODULE(fbd, udl, fbd_driver, fbd_devclass, 0, 0);
MODULE_VERSION(fbd, 1);

17
sys/dev/vt/hw/fb/vt_fb.c
View File

@ -41,6 +41,9 @@ __FBSDID("$FreeBSD$");
#include <dev/vt/hw/fb/vt_fb.h>
#include <dev/vt/colors/vt_termcolors.h>
#include <vm/vm.h>
#include <vm/pmap.h>
static struct vt_driver vt_fb_driver = {
.vd_name = "fb",
.vd_init = vt_fb_init,
@ -136,10 +139,14 @@ vt_fb_mmap(struct vt_device *vd, vm_ooffset_t offset, vm_paddr_t *paddr,
return (ENODEV);
if (offset >= 0 && offset < info->fb_size) {
*paddr = info->fb_pbase + offset;
#ifdef VM_MEMATTR_WRITE_COMBINING
*memattr = VM_MEMATTR_WRITE_COMBINING;
#endif
if (info->fb_pbase == 0) {
*paddr = vtophys((uint8_t *)info->fb_vbase + offset);
} else {
*paddr = info->fb_pbase + offset;
#ifdef VM_MEMATTR_WRITE_COMBINING
*memattr = VM_MEMATTR_WRITE_COMBINING;
#endif
}
return (0);
}
@ -425,7 +432,7 @@ vt_fb_init(struct vt_device *vd)
if (info->fb_size == 0)
return (CN_DEAD);
if (info->fb_pbase == 0)
if (info->fb_pbase == 0 && info->fb_vbase == 0)
info->fb_flags |= FB_FLAG_NOMMAP;
if (info->fb_cmsize <= 0) {

1
sys/powerpc/ps3/ps3_syscons.c
View File

@ -191,7 +191,6 @@ ps3fb_init(struct vt_device *vd)
L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP, 1, 0, 0, 0);
vt_fb_init(vd);
sc->fb_info.fb_flags &= ~FB_FLAG_NOMMAP; /* Set wrongly by vt_fb_init */
return (CN_INTERNAL);
}