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MFC: r201126

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Account for firmware versions which include the CDMA interrupts in
the OFW device tree.
This commit is contained in:
Marius Strobl 2010-01-01 17:30:42 +00:00
parent 92bfafd31b
commit 91de583634
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/stable/8/; revision=201364
1 changed files with 32 additions and 19 deletions
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51
sys/sparc64/pci/schizo.c
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@ -628,31 +628,44 @@ schizo_attach(device_t dev)
/*
* According to the Schizo Errata I-13, consistent DMA flushing/
* syncing is FUBAR in version < 5 (i.e. revision < 2.3) bridges,
* so we can't use it and need to live with the consequences.
* With Schizo version >= 5, CDMA flushing/syncing is usable
* but requires the the workaround described in Schizo Errata
* I-23. With Tomatillo and XMITS, CDMA flushing/syncing works
* as expected, Tomatillo version <= 4 (i.e. revision <= 2.3)
* bridges additionally require a block store after a write to
* TOMXMS_PCI_DMA_SYNC_PEND though.
* so we can't use it and need to live with the consequences. With
* Schizo version >= 5, CDMA flushing/syncing is usable but requires
* the workaround described in Schizo Errata I-23. With Tomatillo
* and XMITS, CDMA flushing/syncing works as expected, Tomatillo
* version <= 4 (i.e. revision <= 2.3) bridges additionally require
* a block store after a write to TOMXMS_PCI_DMA_SYNC_PEND though.
*/
if ((sc->sc_mode == SCHIZO_MODE_SCZ && sc->sc_ver >= 5) ||
sc->sc_mode == SCHIZO_MODE_TOM || sc->sc_mode == SCHIZO_MODE_XMS) {
sc->sc_flags |= SCHIZO_FLAGS_CDMA;
if (sc->sc_mode == SCHIZO_MODE_SCZ) {
n = STX_CDMA_A_INO + sc->sc_half;
if (bus_set_resource(dev, SYS_RES_IRQ, 5,
INTMAP_VEC(sc->sc_ign, n), 1) != 0)
panic("%s: failed to add CDMA interrupt",
__func__);
i = schizo_intr_register(sc, n);
if (i != 0)
panic("%s: could not register interrupt "
"controller for CDMA (%d)", __func__, i);
(void)schizo_get_intrmap(sc, n, NULL,
&sc->sc_cdma_clr);
sc->sc_cdma_state = SCHIZO_CDMA_STATE_DONE;
schizo_set_intr(sc, 5, n, schizo_cdma);
/*
* Some firmware versions include the CDMA interrupt
* at RID 4 but most don't. With the latter we add
* it ourselves at the spare RID 5.
*/
n = INTINO(bus_get_resource_start(dev, SYS_RES_IRQ,
4));
if (n == STX_CDMA_A_INO || n == STX_CDMA_B_INO) {
(void)schizo_get_intrmap(sc, n, NULL,
&sc->sc_cdma_clr);
schizo_set_intr(sc, 4, n, schizo_cdma);
} else {
n = STX_CDMA_A_INO + sc->sc_half;
if (bus_set_resource(dev, SYS_RES_IRQ, 5,
INTMAP_VEC(sc->sc_ign, n), 1) != 0)
panic("%s: failed to add CDMA "
"interrupt", __func__);
i = schizo_intr_register(sc, n);
if (i != 0)
panic("%s: could not register "
"interrupt controller for CDMA "
"(%d)", __func__, i);
(void)schizo_get_intrmap(sc, n, NULL,
&sc->sc_cdma_clr);
schizo_set_intr(sc, 5, n, schizo_cdma);
}
}
if (sc->sc_mode == SCHIZO_MODE_TOM && sc->sc_ver <= 4)
sc->sc_flags |= SCHIZO_FLAGS_BSWAR;