Author: jhibbits
Date: Sat Dec 2 01:42:07 2017
New Revision: 326453
URL: https://svnweb.freebsd.org/changeset/base/326453
Log:
Override memattr for mmap on the Freescale DIU driver
The Display Interface Unit (DIU) uses main memory for the framebuffer, which
is already mapped as cache coherent physical memory. Prevent mmap() from
using its own attributes which may otherwise conflict.
Modified:
head/sys/powerpc/mpc85xx/fsl_diu.c
Modified: head/sys/powerpc/mpc85xx/fsl_diu.c
==============================================================================
--- head/sys/powerpc/mpc85xx/fsl_diu.c Sat Dec 2 01:10:45 2017
(r326452)
+++ head/sys/powerpc/mpc85xx/fsl_diu.c Sat Dec 2 01:42:07 2017
(r326453)
@@ -414,6 +414,8 @@ diu_attach(device_t dev)
sc->sc_info.fb_vbase = (intptr_t)contigmalloc(sc->sc_info.fb_size,
M_DEVBUF, M_ZERO, 0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, 0);
sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase);
+ sc->sc_info.fb_flags = FB_FLAG_MEMATTR;
+ sc->sc_info.fb_memattr = VM_MEMATTR_DEFAULT;
/* Gamma table is 3 consecutive segments of 256 bytes. */
sc->sc_gamma = contigmalloc(3 * 256, M_DEVBUF, 0, 0,
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