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igc(4): XXX: Temporally disable 64-bit DMA for aarch64 

Until PR port-arm/57643 is properly addressed.
This commit is contained in:
rin 2023-10-04 07:41:55 +00:00
parent fb38d839b4
commit 2e96519a48
1 changed files with 11 additions and 2 deletions
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13
sys/dev/pci/igc/if_igc.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_igc.c,v 1.2 2023/10/04 07:35:27 rin Exp $ */
/* $NetBSD: if_igc.c,v 1.3 2023/10/04 07:41:55 rin Exp $ */
/* $OpenBSD: if_igc.c,v 1.13 2023/04/28 10:18:57 bluhm Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_igc.c,v 1.2 2023/10/04 07:35:27 rin Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_igc.c,v 1.3 2023/10/04 07:41:55 rin Exp $");
#ifdef _KERNEL_OPT
#include "opt_net_mpsafe.h"
@ -363,8 +363,17 @@ igc_attach(device_t parent, device_t self, void *aux)
sc->osdep.os_sc = sc;
sc->osdep.os_pa = *pa;
#ifdef __aarch64__
/*
* XXX PR port-arm/57643
* 64-bit DMA does not work at least for LX2K with 32/64GB memory.
* smmu(4) support may be required.
*/
sc->osdep.os_dmat = pa->pa_dmat;
#else
sc->osdep.os_dmat = pci_dma64_available(pa) ?
pa->pa_dmat64 : pa->pa_dmat;
#endif
/* Determine hardware and mac info */
igc_identify_hardware(sc);