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Limit configuration space access to the non-emulated busses to legacy

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PCI_CONF_SIZE.  Extended configuration access is possible, we just have
to implement it without wasting up to 256MiB of KVA.
This commit is contained in:
jakllsch 2015-11-13 18:58:17 +00:00
parent 6ec5e36849
commit d87d62cffa
1 changed files with 6 additions and 2 deletions
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8
sys/arch/arm/nvidia/tegra_pcie.c
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@ -1,4 +1,4 @@
/* $NetBSD: tegra_pcie.c,v 1.6 2015/11/13 18:52:16 jakllsch Exp $ */
/* $NetBSD: tegra_pcie.c,v 1.7 2015/11/13 18:58:17 jakllsch Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
@ -29,7 +29,7 @@
#include "locators.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tegra_pcie.c,v 1.6 2015/11/13 18:52:16 jakllsch Exp $");
__KERNEL_RCSID(0, "$NetBSD: tegra_pcie.c,v 1.7 2015/11/13 18:58:17 jakllsch Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -334,6 +334,8 @@ tegra_pcie_conf_read(void *v, pcitag_t tag, int offset)
reg = d * 0x1000 + offset;
bsh = sc->sc_bsh_a1;
} else {
if ((unsigned int)offset >= PCI_CONF_SIZE)
return (pcireg_t) -1;
reg = tag | offset;
bsh = sc->sc_bsh_a2;
}
@ -360,6 +362,8 @@ tegra_pcie_conf_write(void *v, pcitag_t tag, int offset, pcireg_t val)
reg = d * 0x1000 + offset;
bsh = sc->sc_bsh_a1;
} else {
if ((unsigned int)offset >= PCI_CONF_SIZE)
return;
reg = tag | offset;
bsh = sc->sc_bsh_a2;
}