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Allocate memory for a DMA method table only in case we need to override

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the iommu(4) provided one, i.e. in case of Hummingbird and Sabre bridges,
otherwise just use the iommu(4) one. This also fixes a bug introduced in
r220039 which caused an empty DMA method table to be used for the second
of a pair of Psycho bridges.
This commit is contained in:
Marius Strobl 2011-03-29 19:48:03 +00:00
parent d31b45e164
commit 301afbce99
2 changed files with 18 additions and 9 deletions
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25
sys/sparc64/pci/psycho.c
View File

@ -529,21 +529,29 @@ psycho_attach(device_t dev)
*
* For the moment, 32KB should be more than enough.
*/
memcpy(&sc->sc_dma_methods, &iommu_dma_methods,
sizeof(sc->sc_dma_methods));
sc->sc_is = malloc(sizeof(struct iommu_state), M_DEVBUF,
M_NOWAIT | M_ZERO);
sc->sc_is = malloc(sizeof(*sc->sc_is), M_DEVBUF, M_NOWAIT |
M_ZERO);
if (sc->sc_is == NULL)
panic("%s: malloc iommu_state failed", __func__);
panic("%s: could not malloc IOMMU state", __func__);
sc->sc_is->is_flags = IOMMU_PRESERVE_PROM;
if (sc->sc_mode == PSYCHO_MODE_SABRE) {
sc->sc_dma_methods.dm_dmamap_sync =
sc->sc_dma_methods =
malloc(sizeof(*sc->sc_dma_methods), M_DEVBUF,
M_NOWAIT);
if (sc->sc_dma_methods == NULL)
panic("%s: could not malloc DMA methods",
__func__);
memcpy(sc->sc_dma_methods, &iommu_dma_methods,
sizeof(*sc->sc_dma_methods));
sc->sc_dma_methods->dm_dmamap_sync =
sabre_dmamap_sync;
sc->sc_is->is_pmaxaddr =
IOMMU_MAXADDR(SABRE_IOMMU_BITS);
} else
} else {
sc->sc_dma_methods = &iommu_dma_methods;
sc->sc_is->is_pmaxaddr =
IOMMU_MAXADDR(PSYCHO_IOMMU_BITS);
}
sc->sc_is->is_sb[0] = sc->sc_is->is_sb[1] = 0;
if (OF_getproplen(node, "no-streaming-cache") < 0)
sc->sc_is->is_sb[0] = sc->sc_pcictl + PCR_STRBUF;
@ -551,6 +559,7 @@ psycho_attach(device_t dev)
psycho_iommu_init(sc, 3, dvmabase);
} else {
/* Just copy IOMMU state, config tag and address. */
sc->sc_dma_methods = &iommu_dma_methods;
sc->sc_is = osc->sc_is;
if (OF_getproplen(node, "no-streaming-cache") < 0)
sc->sc_is->is_sb[1] = sc->sc_pcictl + PCR_STRBUF;
@ -567,7 +576,7 @@ psycho_attach(device_t dev)
panic("%s: bus_dma_tag_create failed", __func__);
/* Customize the tag. */
sc->sc_pci_dmat->dt_cookie = sc->sc_is;
sc->sc_pci_dmat->dt_mt = &sc->sc_dma_methods;
sc->sc_pci_dmat->dt_mt = sc->sc_dma_methods;
i = OF_getprop(node, "bus-range", (void *)prop_array,
sizeof(prop_array));

2
sys/sparc64/pci/psychovar.h
View File

@ -36,7 +36,7 @@
* per pair of psychos.
*/
struct psycho_softc {
struct bus_dma_methods sc_dma_methods;
struct bus_dma_methods *sc_dma_methods;
device_t sc_dev;