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virtio-modern: fix PCI common read/write functions on big endian targets

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Virtio modern has the common data organized in little endian, but
on powerpc64 BE it was reading and writing in the wrong endian.

Submitted by:	Leonardo Bianconi <leonardo.bianconi@eldorado.org.br>
Reviewed by:	bryanv, alfredo
Sponsored by:	Eldorado Research Institute (eldorado.org.br)
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D28947
This commit is contained in:
Alfredo Dal'Ava Junior 2021-05-07 02:40:35 -03:00
parent d5b20eaafc
commit fb53b42e36
1 changed files with 8 additions and 4 deletions
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12
sys/dev/virtio/pci/virtio_pci_modern.c
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@ -1315,13 +1315,15 @@ vtpci_modern_read_common_1(struct vtpci_modern_softc *sc, bus_size_t off)
static uint16_t
vtpci_modern_read_common_2(struct vtpci_modern_softc *sc, bus_size_t off)
{
return (bus_read_2(&sc->vtpci_common_res_map.vtrm_map, off));
return virtio_htog16(true,
bus_read_2(&sc->vtpci_common_res_map.vtrm_map, off));
}
static uint32_t
vtpci_modern_read_common_4(struct vtpci_modern_softc *sc, bus_size_t off)
{
return (bus_read_4(&sc->vtpci_common_res_map.vtrm_map, off));
return virtio_htog32(true,
bus_read_4(&sc->vtpci_common_res_map.vtrm_map, off));
}
static void
@ -1335,14 +1337,16 @@ static void
vtpci_modern_write_common_2(struct vtpci_modern_softc *sc, bus_size_t off,
uint16_t val)
{
bus_write_2(&sc->vtpci_common_res_map.vtrm_map, off, val);
bus_write_2(&sc->vtpci_common_res_map.vtrm_map,
off, virtio_gtoh16(true, val));
}
static void
vtpci_modern_write_common_4(struct vtpci_modern_softc *sc, bus_size_t off,
uint32_t val)
{
bus_write_4(&sc->vtpci_common_res_map.vtrm_map, off, val);
bus_write_4(&sc->vtpci_common_res_map.vtrm_map,
off, virtio_gtoh32(true, val));
}
static void